DbaccMain.cpp 567 KB
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/* Copyright (C) 2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#define DBACC_C
#include "Dbacc.hpp"

#include <signaldata/AccFrag.hpp>
#include <signaldata/AccScan.hpp>
#include <signaldata/AccLock.hpp>
#include <signaldata/EventReport.hpp>
#include <signaldata/FsConf.hpp>
#include <signaldata/FsRef.hpp>
#include <signaldata/FsRemoveReq.hpp>
#include <signaldata/DropTab.hpp>
#include <signaldata/DumpStateOrd.hpp>

// TO_DO_RONM is a label for comments on what needs to be improved in future versions
// when more time is given.

#ifdef VM_TRACE
#define DEBUG(x) ndbout << "DBACC: "<< x << endl;
#else
#define DEBUG(x)
#endif


Uint32
Dbacc::remainingUndoPages(){  
  Uint32 HeadPage = cundoposition >> ZUNDOPAGEINDEXBITS;
  Uint32 TailPage = clastUndoPageIdWritten;

  // Head must be larger or same as tail
  ndbrequire(HeadPage>=TailPage);

  Uint32 UsedPages = HeadPage - TailPage;
  Uint32 Remaining = cundopagesize - UsedPages;

  // There can not be more than cundopagesize remaining
  ndbrequire(Remaining<=cundopagesize);

  return Remaining;
}//Dbacc::remainingUndoPages()

void
Dbacc::updateLastUndoPageIdWritten(Signal* signal, Uint32 aNewValue){
  if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_COMMIT) {
    clastUndoPageIdWritten = aNewValue;
    if (remainingUndoPages() >= ZMIN_UNDO_PAGES_AT_COMMIT) {
      jam();
      EXECUTE_DIRECT(DBLQH, GSN_ACC_COM_UNBLOCK, signal, 1);
      jamEntry();
    }//if
  } else {
    clastUndoPageIdWritten = aNewValue;
  }//if
}//Dbacc::updateLastUndoPageIdWritten()

void 
Dbacc::updateUndoPositionPage(Signal* signal, Uint32 aNewValue){
  if (remainingUndoPages() >= ZMIN_UNDO_PAGES_AT_COMMIT) {
    cundoposition = aNewValue;
    if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_COMMIT) {
      jam();
      EXECUTE_DIRECT(DBLQH, GSN_ACC_COM_BLOCK, signal, 1);
      jamEntry();
    }//if
  } else {
    cundoposition = aNewValue;
  }//if
}//Dbacc::updateUndoPositionPage()

// Signal entries and statement blocks
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       COMMON SIGNAL RECEPTION MODULE                                              */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* CONTINUEB                                       CONTINUE SIGNAL                   */
/* ******************------------------------------+                                 */
/*   SENDER: ACC,    LEVEL B       */
void Dbacc::execCONTINUEB(Signal* signal) 
{
  Uint32 tcase;

  jamEntry();
  tcase = signal->theData[0];
  tdata0 = signal->theData[1];
  tresult = 0;
  switch (tcase) {
  case ZLOAD_BAL_LCP_TIMER:
    if (clblPageOver == 0) {
      jam();
      clblPageCounter = clblPagesPerTick;
    } else {
      if (clblPageOver > clblPagesPerTick) {
        jam();
        clblPageOver = clblPageOver - clblPagesPerTick;
      } else {
        jam();
        clblPageOver = 0;
        clblPageCounter = clblPagesPerTick - clblPageOver;
      }//if
    }//if
    signal->theData[0] = ZLOAD_BAL_LCP_TIMER;
    sendSignalWithDelay(cownBlockref, GSN_CONTINUEB, signal, 100, 1);
    return;
    break;
  case ZINITIALISE_RECORDS:
    jam();
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    initialiseRecordsLab(signal, signal->theData[3], signal->theData[4]);
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    return;
    break;
  case ZSR_READ_PAGES_ALLOC:
    jam();
    fragrecptr.i = tdata0;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    srReadPagesAllocLab(signal);
    return;
    break;
  case ZSTART_UNDO:
    jam();
    startUndoLab(signal);
    return;
    break;
  case ZSEND_SCAN_HBREP:
    jam();
    sendScanHbRep(signal, tdata0);
    break;
  case ZREL_ROOT_FRAG:
    {
      jam();
      Uint32 tableId = signal->theData[1];
      releaseRootFragResources(signal, tableId);
      break;
    }
  case ZREL_FRAG:
    {
      jam();
      Uint32 fragIndex = signal->theData[1];
      releaseFragResources(signal, fragIndex);
      break;
    }
  case ZREL_DIR:
    {
      jam();
      Uint32 fragIndex = signal->theData[1];
      Uint32 dirIndex = signal->theData[2];
      Uint32 startIndex = signal->theData[3];
      releaseDirResources(signal, fragIndex, dirIndex, startIndex);
      break;
    }
  case ZREPORT_MEMORY_USAGE:{
    jam();
    static int c_currentMemUsed = 0;
    int now = (cnoOfAllocatedPages * 100)/cpagesize;
    const int thresholds[] = { 99, 90, 80, 0};
    
    Uint32 i = 0;
    const Uint32 sz = sizeof(thresholds)/sizeof(thresholds[0]);
    for(i = 0; i<sz; i++){
      if(now >= thresholds[i]){
	now = thresholds[i];
	break;
      }
    }
    
    if(now != c_currentMemUsed){
      reportMemoryUsage(signal, now > c_currentMemUsed ? 1 : -1);
    }
    
    c_currentMemUsed = now;
    
    signal->theData[0] = ZREPORT_MEMORY_USAGE;
    sendSignalWithDelay(reference(), GSN_CONTINUEB, signal, 2000, 1);    
    return;
  }

  default:
    ndbrequire(false);
    break;
  }//switch
  return;
}//Dbacc::execCONTINUEB()

/* ******************--------------------------------------------------------------- */
/* FSCLOSECONF                                       CLOSE FILE CONF                 */
/* ******************------------------------------+                                 */
/* SENDER: FS,     LEVEL B         */
void Dbacc::execFSCLOSECONF(Signal* signal) 
{
  jamEntry();
  fsConnectptr.i = signal->theData[0];
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  tresult = 0;
  switch (fsConnectptr.p->fsState) {
  case WAIT_CLOSE_UNDO:
    jam();
    releaseFsConnRec(signal);
    break;
  case LCP_CLOSE_DATA:
    jam();
    checkSyncUndoPagesLab(signal);
    return;
    break;
  case SR_CLOSE_DATA:
    jam();
    sendaccSrconfLab(signal);
    return;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  return;
}//Dbacc::execFSCLOSECONF()

/* ******************--------------------------------------------------------------- */
/* FSCLOSEREF                                          OPENFILE CONF                 */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSCLOSEREF(Signal* signal) 
{
  jamEntry();
  ndbrequire(false);
}//Dbacc::execFSCLOSEREF()

/* ******************--------------------------------------------------------------- */
/* FSOPENCONF                                         OPENFILE CONF                  */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSOPENCONF(Signal* signal) 
{
  jamEntry();
  fsConnectptr.i = signal->theData[0];
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  tuserptr = signal->theData[1];
  tresult = 0;	/* RESULT CHECK VALUE              */
  switch (fsConnectptr.p->fsState) {
  case WAIT_OPEN_UNDO_LCP:
    jam();
    lcpOpenUndofileConfLab(signal);
    return;
    break;
  case WAIT_OPEN_UNDO_LCP_NEXT:
    jam();
    fsConnectptr.p->fsPtr = tuserptr;
    return;
    break;
  case OPEN_UNDO_FILE_SR:
    jam();
    fsConnectptr.p->fsPtr = tuserptr;
    srStartUndoLab(signal);
    return;
    break;
  case WAIT_OPEN_DATA_FILE_FOR_WRITE:
    jam();
    lcpFsOpenConfLab(signal);
    return;
    break;
  case WAIT_OPEN_DATA_FILE_FOR_READ:
    jam();
    fsConnectptr.p->fsPtr = tuserptr;
    srFsOpenConfLab(signal);
    return;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  return;
}//Dbacc::execFSOPENCONF()

/* ******************--------------------------------------------------------------- */
/* FSOPENREF                                         OPENFILE REF                    */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSOPENREF(Signal* signal) 
{
  jamEntry();
  ndbrequire(false);
}//Dbacc::execFSOPENREF()

/* ******************--------------------------------------------------------------- */
/* FSREADCONF                                          OPENFILE CONF                 */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSREADCONF(Signal* signal) 
{
  jamEntry();
  fsConnectptr.i = signal->theData[0];
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  tresult = 0;	/* RESULT CHECK VALUE              */
  switch (fsConnectptr.p->fsState) {
  case WAIT_READ_PAGE_ZERO:
    jam();
    fragrecptr.i = fsConnectptr.p->fragrecPtr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    srReadPageZeroLab(signal);
    return;
    break;
  case WAIT_READ_DATA:
    jam();
    fragrecptr.i = fsConnectptr.p->fragrecPtr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    storeDataPageInDirectoryLab(signal);
    return;
    break;
  case READ_UNDO_PAGE:
    jam();
    srDoUndoLab(signal);
    return;
    break;
  case READ_UNDO_PAGE_AND_CLOSE:
    jam();
    fsConnectptr.p->fsState = WAIT_CLOSE_UNDO;
    /* ************************ */
    /* FSCLOSEREQ               */
    /* ************************ */
    signal->theData[0] = fsConnectptr.p->fsPtr;
    signal->theData[1] = cownBlockref;
    signal->theData[2] = fsConnectptr.i;
    signal->theData[3] = 0;
    sendSignal(NDBFS_REF, GSN_FSCLOSEREQ, signal, 4, JBA);
    /* FLAG = DO NOT DELETE FILE */
    srDoUndoLab(signal);
    return;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  return;
}//Dbacc::execFSREADCONF()

/* ******************--------------------------------------------------------------- */
/* FSREADRREF                                          OPENFILE CONF                 */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSREADREF(Signal* signal) 
{
  jamEntry();
  progError(0, __LINE__, "Read of file refused");
  return;
}//Dbacc::execFSREADREF()

/* ******************--------------------------------------------------------------- */
/* FSWRITECONF                                         OPENFILE CONF                 */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSWRITECONF(Signal* signal) 
{
  jamEntry();
  fsOpptr.i = signal->theData[0];
  ptrCheckGuard(fsOpptr, cfsOpsize, fsOprec);
  /* FS_OPERATION  PTR               */
  tresult = 0;	/* RESULT CHECK VALUE              */
  fsConnectptr.i = fsOpptr.p->fsConptr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  fragrecptr.i = fsOpptr.p->fsOpfragrecPtr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  switch (fsOpptr.p->fsOpstate) {
  case WAIT_WRITE_UNDO:
    jam();
    updateLastUndoPageIdWritten(signal, fsOpptr.p->fsOpMemPage);
    releaseFsOpRec(signal);
    if (fragrecptr.p->nrWaitWriteUndoExit == 0) {
      jam();
      checkSendLcpConfLab(signal);
      return;
    } else {
      jam();
      fragrecptr.p->lastUndoIsStored = ZTRUE;
    }//if
    return;
    break;
  case WAIT_WRITE_UNDO_EXIT:
    jam();
    updateLastUndoPageIdWritten(signal, fsOpptr.p->fsOpMemPage);
    releaseFsOpRec(signal);
    if (fragrecptr.p->nrWaitWriteUndoExit > 0) {
      jam();
      fragrecptr.p->nrWaitWriteUndoExit--;
    }//if
    if (fsConnectptr.p->fsState == WAIT_CLOSE_UNDO) {
      jam();
      /* ************************ */
      /* FSCLOSEREQ               */
      /* ************************ */
      signal->theData[0] = fsConnectptr.p->fsPtr;
      signal->theData[1] = cownBlockref;
      signal->theData[2] = fsConnectptr.i;
      signal->theData[3] = ZFALSE;
      sendSignal(NDBFS_REF, GSN_FSCLOSEREQ, signal, 4, JBA);
    }//if
    if (fragrecptr.p->nrWaitWriteUndoExit == 0) {
      if (fragrecptr.p->lastUndoIsStored == ZTRUE) {
        jam();
        fragrecptr.p->lastUndoIsStored = ZFALSE;
        checkSendLcpConfLab(signal);
        return;
      }//if
    }//if
    return;
    break;
  case WAIT_WRITE_DATA:
    jam();
    releaseFsOpRec(signal);
    fragrecptr.p->activeDataFilePage += ZWRITEPAGESIZE;
    fragrecptr.p->activeDataPage = 0;
    rootfragrecptr.i = fragrecptr.p->myroot;
    ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
    lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
    ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
    switch (fragrecptr.p->fragState) {
    case LCP_SEND_PAGES:
      jam();
      savepagesLab(signal);
      return;
      break;
    case LCP_SEND_OVER_PAGES:
      jam();
      saveOverPagesLab(signal);
      return;
      break;
    case LCP_SEND_ZERO_PAGE:
      jam();
      saveZeroPageLab(signal);
      return;
      break;
    case WAIT_ZERO_PAGE_STORED:
      jam();
      lcpCloseDataFileLab(signal);
      return;
      break;
    default:
      ndbrequire(false);
      return;
      break;
    }//switch
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  return;
}//Dbacc::execFSWRITECONF()

/* ******************--------------------------------------------------------------- */
/* FSWRITEREF                                          OPENFILE CONF                 */
/* ******************------------------------------+                                 */
/*   SENDER: FS,     LEVEL B       */
void Dbacc::execFSWRITEREF(Signal* signal) 
{
  jamEntry();
  progError(0, __LINE__, "Write to file refused");
  return;
}//Dbacc::execFSWRITEREF()

/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/*                                                                           */
/*       END OF COMMON SIGNAL RECEPTION MODULE                               */
/*                                                                           */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/*                                                                           */
/*       SYSTEM RESTART MODULE                                               */
/*                                                                           */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
void Dbacc::execNDB_STTOR(Signal* signal) 
{
  Uint32 tstartphase;
  Uint32 tStartType;

  jamEntry();
  cndbcntrRef = signal->theData[0];
  cmynodeid = signal->theData[1];
  tstartphase = signal->theData[2];
  tStartType = signal->theData[3];
  switch (tstartphase) {
  case ZSPH1:
    jam();
    ndbsttorryLab(signal);
    return;
    break;
  case ZSPH2:
    cnoLcpPages = 2 * (ZWRITEPAGESIZE + 1);
    initialiseLcpPages(signal);
    ndbsttorryLab(signal);
    return;
    break;
  case ZSPH3:
    if ((tStartType == NodeState::ST_NODE_RESTART) ||
        (tStartType == NodeState::ST_INITIAL_NODE_RESTART)) {
      jam();
      //---------------------------------------------
      // csystemRestart is used to check what is needed
      // during log execution. When starting a node it
      // is not a log execution and rather a normal
      // execution. Thus we reset the variable here to
      // avoid unnecessary system crashes.
      //---------------------------------------------
      csystemRestart = ZFALSE;
    }//if
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    signal->theData[0] = ZLOAD_BAL_LCP_TIMER;
    sendSignalWithDelay(cownBlockref, GSN_CONTINUEB, signal, 100, 1);
    break;
  case ZSPH6:
    jam();
    clblPagesPerTick = clblPagesPerTickAfterSr;
    csystemRestart = ZFALSE;

    signal->theData[0] = ZREPORT_MEMORY_USAGE;
    sendSignalWithDelay(reference(), GSN_CONTINUEB, signal, 2000, 1);    
    break;
  default:
    jam();
    /*empty*/;
    break;
  }//switch
  ndbsttorryLab(signal);
  return;
}//Dbacc::execNDB_STTOR()

/* ******************--------------------------------------------------------------- */
/* STTOR                                              START /  RESTART               */
/* ******************------------------------------+                                 */
/*   SENDER: ANY,    LEVEL B       */
void Dbacc::execSTTOR(Signal* signal) 
{
  jamEntry();
  //  tstartphase = signal->theData[1];
  tuserblockref = signal->theData[3];
  csignalkey = signal->theData[6];
  sttorrysignalLab(signal);
  return;
}//Dbacc::execSTTOR()

/* --------------------------------------------------------------------------------- */
/* ZSPH1                                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::ndbrestart1Lab(Signal* signal) 
{
  cmynodeid = globalData.ownId;
  cownBlockref = numberToRef(DBACC, cmynodeid);
  czero = 0;
  cminusOne = czero - 1;
  ctest = 0;
  cundoLogActive = ZFALSE;
  csystemRestart = ZTRUE;
  clblPageOver = 0;
  clblPageCounter = 0;
  cactiveUndoFilePage = 0;
  cprevUndoaddress = cminusOne;
  cundoposition = 0;
  clastUndoPageIdWritten = 0;
  cactiveUndoFileVersion = RNIL;
  cactiveOpenUndoFsPtr = RNIL;
  for (Uint32 tmp = 0; tmp < ZMAX_UNDO_VERSION; tmp++) {
    csrVersList[tmp] = RNIL;
  }//for
  return;
}//Dbacc::ndbrestart1Lab()

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void Dbacc::initialiseRecordsLab(Signal* signal, Uint32 ref, Uint32 data) 
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{
  switch (tdata0) {
  case 0:
    jam();
    initialiseTableRec(signal);
    break;
  case 1:
    jam();
    initialiseFsConnectionRec(signal);
    break;
  case 2:
    jam();
    initialiseFsOpRec(signal);
    break;
  case 3:
    jam();
    initialiseLcpConnectionRec(signal);
    break;
  case 4:
    jam();
    initialiseDirRec(signal);
    break;
  case 5:
    jam();
    initialiseDirRangeRec(signal);
    break;
  case 6:
    jam();
    initialiseFragRec(signal);
    break;
  case 7:
    jam();
    initialiseOverflowRec(signal);
    break;
  case 8:
    jam();
    initialiseOperationRec(signal);
    break;
  case 9:
    jam();
    initialisePageRec(signal);
    break;
  case 10:
    jam();
    initialiseRootfragRec(signal);
    break;
  case 11:
    jam();
    initialiseScanRec(signal);
    break;
  case 12:
    jam();
    initialiseSrVerRec(signal);
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    {
      ReadConfigConf * conf = (ReadConfigConf*)signal->getDataPtrSend();
      conf->senderRef = reference();
      conf->senderData = data;
      sendSignal(ref, GSN_READ_CONFIG_CONF, signal, 
		 ReadConfigConf::SignalLength, JBB);
    }
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    return;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch

  signal->theData[0] = ZINITIALISE_RECORDS;
  signal->theData[1] = tdata0 + 1;
  signal->theData[2] = 0;
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  signal->theData[3] = ref;
  signal->theData[4] = data;
  sendSignal(reference(), GSN_CONTINUEB, signal, 5, JBB);
  return;
}//Dbacc::initialiseRecordsLab()
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/* *********************************<< */
/* NDB_STTORRY                         */
/* *********************************<< */
void Dbacc::ndbsttorryLab(Signal* signal) 
{
  signal->theData[0] = cownBlockref;
  sendSignal(cndbcntrRef, GSN_NDB_STTORRY, signal, 1, JBB);
  return;
}//Dbacc::ndbsttorryLab()

/* *********************************<< */
/* SIZEALT_REP         SIZE ALTERATION */
/* *********************************<< */
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void Dbacc::execREAD_CONFIG_REQ(Signal* signal) 
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{
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  const ReadConfigReq * req = (ReadConfigReq*)signal->getDataPtr();
  Uint32 ref = req->senderRef;
  Uint32 senderData = req->senderData;
  ndbrequire(req->noOfParameters == 0);
  
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  jamEntry();
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  const ndb_mgm_configuration_iterator * p = 
    theConfiguration.getOwnConfigIterator();
  ndbrequire(p != 0);
  
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_DIR_RANGE, &cdirrangesize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_DIR_ARRAY, &cdirarraysize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_FRAGMENT, &cfragmentsize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_OP_RECS, &coprecsize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_OVERFLOW_RECS, 
					&coverflowrecsize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_PAGE8, &cpagesize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_ROOT_FRAG, 
					&crootfragmentsize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_TABLE, &ctablesize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_ACC_SCAN, &cscanRecSize));
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  initRecords();
  ndbrestart1Lab(signal);
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  clblPagesPerTick = 50;
  //ndb_mgm_get_int_parameter(p, CFG_DB_, &clblPagesPerTick);

  clblPagesPerTickAfterSr = 50;
  //ndb_mgm_get_int_parameter(p, CFG_DB_, &clblPagesPerTickAfterSr);

  tdata0 = 0;
  initialiseRecordsLab(signal, ref, senderData);
716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434
  return;
}//Dbacc::execSIZEALT_REP()

/* *********************************<< */
/* STTORRY                             */
/* *********************************<< */
void Dbacc::sttorrysignalLab(Signal* signal) 
{
  signal->theData[0] = csignalkey;
  signal->theData[1] = 3;
  /* BLOCK CATEGORY */
  signal->theData[2] = 2;
  /* SIGNAL VERSION NUMBER */
  signal->theData[3] = ZSPH1;
  signal->theData[4] = 255;
  sendSignal(NDBCNTR_REF, GSN_STTORRY, signal, 5, JBB);
  /* END OF START PHASES */
  return;
}//Dbacc::sttorrysignalLab()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_DIR_REC                                                                */
/*              INITIALATES THE DIRECTORY RECORDS.                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseDirRec(Signal* signal) 
{
  DirectoryarrayPtr idrDirptr;
  ndbrequire(cdirarraysize > 0);
  for (idrDirptr.i = 0; idrDirptr.i < cdirarraysize; idrDirptr.i++) {
    ptrAss(idrDirptr, directoryarray);
    for (Uint32 i = 0; i <= 255; i++) {
      idrDirptr.p->pagep[i] = RNIL;
    }//for
  }//for
  cdirmemory = 0;
  cfirstfreedir = RNIL;
}//Dbacc::initialiseDirRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_DIR_RANGE_REC                                                          */
/*              INITIALATES THE DIR_RANGE RECORDS.                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseDirRangeRec(Signal* signal) 
{
  DirRangePtr idrDirRangePtr;

  ndbrequire(cdirrangesize > 0);
  for (idrDirRangePtr.i = 0; idrDirRangePtr.i < cdirrangesize; idrDirRangePtr.i++) {
    ptrAss(idrDirRangePtr, dirRange);
    idrDirRangePtr.p->dirArray[0] = idrDirRangePtr.i + 1;
    for (Uint32 i = 1; i < 256; i++) {
      idrDirRangePtr.p->dirArray[i] = RNIL;
    }//for
  }//for
  idrDirRangePtr.i = cdirrangesize - 1;
  ptrAss(idrDirRangePtr, dirRange);
  idrDirRangePtr.p->dirArray[0] = RNIL;
  cfirstfreeDirrange = 0;
}//Dbacc::initialiseDirRangeRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_FRAG_REC                                                               */
/*              INITIALATES THE FRAGMENT RECORDS.                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseFragRec(Signal* signal) 
{
  FragmentrecPtr regFragPtr;
  ndbrequire(cfragmentsize > 0);
  for (regFragPtr.i = 0; regFragPtr.i < cfragmentsize; regFragPtr.i++) {
    jam();
    ptrAss(regFragPtr, fragmentrec);
    initFragGeneral(regFragPtr);
    regFragPtr.p->nextfreefrag = regFragPtr.i + 1;
  }//for
  regFragPtr.i = cfragmentsize - 1;
  ptrAss(regFragPtr, fragmentrec);
  regFragPtr.p->nextfreefrag = RNIL;
  cfirstfreefrag = 0;
}//Dbacc::initialiseFragRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_FS_CONNECTION_REC                                                      */
/*              INITIALATES THE FS_CONNECTION RECORDS                                */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseFsConnectionRec(Signal* signal) 
{
  ndbrequire(cfsConnectsize > 0);
  for (fsConnectptr.i = 0; fsConnectptr.i < cfsConnectsize; fsConnectptr.i++) {
    ptrAss(fsConnectptr, fsConnectrec);
    fsConnectptr.p->fsNext = fsConnectptr.i + 1;
    fsConnectptr.p->fsPrev = RNIL;
    fsConnectptr.p->fragrecPtr = RNIL;
    fsConnectptr.p->fsState = WAIT_NOTHING;
  }//for
  fsConnectptr.i = cfsConnectsize - 1;
  ptrAss(fsConnectptr, fsConnectrec);
  fsConnectptr.p->fsNext = RNIL;	/* INITIALITES THE LAST CONNECTRECORD */
  cfsFirstfreeconnect = 0;	/* INITIATES THE FIRST FREE CONNECT RECORD */
}//Dbacc::initialiseFsConnectionRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_FS_OP_REC                                                              */
/*              INITIALATES THE FS_OP RECORDS                                        */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseFsOpRec(Signal* signal) 
{
  ndbrequire(cfsOpsize > 0);
  for (fsOpptr.i = 0; fsOpptr.i < cfsOpsize; fsOpptr.i++) {
    ptrAss(fsOpptr, fsOprec);
    fsOpptr.p->fsOpnext = fsOpptr.i + 1;
    fsOpptr.p->fsOpfragrecPtr = RNIL;
    fsOpptr.p->fsConptr = RNIL;
    fsOpptr.p->fsOpstate = WAIT_NOTHING;
  }//for
  fsOpptr.i = cfsOpsize - 1;
  ptrAss(fsOpptr, fsOprec);
  fsOpptr.p->fsOpnext = RNIL;
  cfsFirstfreeop = 0;
}//Dbacc::initialiseFsOpRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_LCP_CONNECTION_REC                                                     */
/*              INITIALATES THE LCP_CONNECTION RECORDS                               */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseLcpConnectionRec(Signal* signal) 
{
  ndbrequire(clcpConnectsize > 0);
  for (lcpConnectptr.i = 0; lcpConnectptr.i < clcpConnectsize; lcpConnectptr.i++) {
    ptrAss(lcpConnectptr, lcpConnectrec);
    lcpConnectptr.p->nextLcpConn = lcpConnectptr.i + 1;
    lcpConnectptr.p->lcpUserptr = RNIL;
    lcpConnectptr.p->rootrecptr = RNIL;
    lcpConnectptr.p->lcpstate = LCP_FREE;
  }//for
  lcpConnectptr.i = clcpConnectsize - 1;
  ptrAss(lcpConnectptr, lcpConnectrec);
  lcpConnectptr.p->nextLcpConn = RNIL;
  cfirstfreelcpConnect = 0;
}//Dbacc::initialiseLcpConnectionRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_OPERATION_REC                                                          */
/*              INITIALATES THE OPERATION RECORDS.                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseOperationRec(Signal* signal) 
{
  ndbrequire(coprecsize > 0);
  for (operationRecPtr.i = 0; operationRecPtr.i < coprecsize; operationRecPtr.i++) {
    ptrAss(operationRecPtr, operationrec);
    operationRecPtr.p->transactionstate = IDLE;
    operationRecPtr.p->operation = ZUNDEFINED_OP;
    operationRecPtr.p->opState = FREE_OP;
    operationRecPtr.p->nextOp = operationRecPtr.i + 1;
  }//for
  operationRecPtr.i = coprecsize - 1;
  ptrAss(operationRecPtr, operationrec);
  operationRecPtr.p->nextOp = RNIL;
  cfreeopRec = 0;
}//Dbacc::initialiseOperationRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_OVERFLOW_REC                                                           */
/*              INITIALATES THE OVERFLOW RECORDS                                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseOverflowRec(Signal* signal) 
{
  OverflowRecordPtr iorOverflowRecPtr;

  ndbrequire(coverflowrecsize > 0);
  for (iorOverflowRecPtr.i = 0; iorOverflowRecPtr.i < coverflowrecsize; iorOverflowRecPtr.i++) {
    ptrAss(iorOverflowRecPtr, overflowRecord);
    iorOverflowRecPtr.p->nextfreeoverrec = iorOverflowRecPtr.i + 1;
  }//for
  iorOverflowRecPtr.i = coverflowrecsize - 1;
  ptrAss(iorOverflowRecPtr, overflowRecord);
  iorOverflowRecPtr.p->nextfreeoverrec = RNIL;
  cfirstfreeoverrec = 0;
}//Dbacc::initialiseOverflowRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_PAGE_REC                                                               */
/*              INITIALATES THE PAGE RECORDS.                                        */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialisePageRec(Signal* signal) 
{
  ndbrequire(cpagesize > 0);
  cfreepage = 0;
  cfirstfreepage = RNIL;
  cnoOfAllocatedPages = 0;
}//Dbacc::initialisePageRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_LCP_PAGES                                                              */
/*              INITIALATES THE LCP PAGE RECORDS.                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseLcpPages(Signal* signal) 
{
  Uint32 tilpIndex;

  ndbrequire(cnoLcpPages >= (2 * (ZWRITEPAGESIZE + 1)));
  /* --------------------------------------------------------------------------------- */
  /*       AN ABSOLUTE MINIMUM IS THAT WE HAVE 16 LCP PAGES TO HANDLE TWO CONCURRENT   */
  /*       LCP'S ON LOCAL FRAGMENTS.                                                   */
  /* --------------------------------------------------------------------------------- */
  ndbrequire(cpagesize >= (cnoLcpPages + 8));
  /* --------------------------------------------------------------------------------- */
  /*       THE NUMBER OF PAGES MUST BE AT LEAST 8 PLUS THE NUMBER OF PAGES REQUIRED BY */
  /*       THE LOCAL CHECKPOINT PROCESS. THIS NUMBER IS 8 TIMES THE PARALLELISM OF     */
  /*       LOCAL CHECKPOINTS.                                                          */
  /* --------------------------------------------------------------------------------- */
  /* --------------------------------------------------------------------------------- */
  /*       WE SET UP A LINKED LIST OF PAGES FOR EXCLUSIVE USE BY LOCAL CHECKPOINTS.    */
  /* --------------------------------------------------------------------------------- */
  cfirstfreeLcpPage = RNIL;
  for (tilpIndex = 0; tilpIndex < cnoLcpPages; tilpIndex++) {
    jam();
    seizePage(signal);
    rlpPageptr = spPageptr;
    releaseLcpPage(signal);
  }//for
}//Dbacc::initialiseLcpPages()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_ROOTFRAG_REC                                                           */
/*              INITIALATES THE ROOTFRAG  RECORDS.                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseRootfragRec(Signal* signal) 
{
  ndbrequire(crootfragmentsize > 0);
  for (rootfragrecptr.i = 0; rootfragrecptr.i < crootfragmentsize; rootfragrecptr.i++) {
    ptrAss(rootfragrecptr, rootfragmentrec);
    rootfragrecptr.p->nextroot = rootfragrecptr.i + 1;
    rootfragrecptr.p->fragmentptr[0] = RNIL;
    rootfragrecptr.p->fragmentptr[1] = RNIL;
  }//for
  rootfragrecptr.i = crootfragmentsize - 1;
  ptrAss(rootfragrecptr, rootfragmentrec);
  rootfragrecptr.p->nextroot = RNIL;
  cfirstfreerootfrag = 0;
}//Dbacc::initialiseRootfragRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_SCAN_REC                                                               */
/*              INITIALATES THE QUE_SCAN RECORDS.                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseScanRec(Signal* signal) 
{
  ndbrequire(cscanRecSize > 0);
  for (scanPtr.i = 0; scanPtr.i < cscanRecSize; scanPtr.i++) {
    ptrAss(scanPtr, scanRec);
    scanPtr.p->scanNextfreerec = scanPtr.i + 1;
    scanPtr.p->scanState = ScanRec::SCAN_DISCONNECT;
    scanPtr.p->scanTimer = 0;
    scanPtr.p->scanContinuebCounter = 0;
  }//for
  scanPtr.i = cscanRecSize - 1;
  ptrAss(scanPtr, scanRec);
  scanPtr.p->scanNextfreerec = RNIL;
  cfirstFreeScanRec = 0;
}//Dbacc::initialiseScanRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_SR_VER_REC                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseSrVerRec(Signal* signal) 
{
  ndbrequire(csrVersionRecSize > 0);
  for (srVersionPtr.i = 0; srVersionPtr.i < csrVersionRecSize; srVersionPtr.i++) {
    ptrAss(srVersionPtr, srVersionRec);
    srVersionPtr.p->nextFreeSr = srVersionPtr.i + 1;
  }//for
  srVersionPtr.i = csrVersionRecSize - 1;
  ptrAss(srVersionPtr, srVersionRec);
  srVersionPtr.p->nextFreeSr = RNIL;
  cfirstFreeSrVersionRec = 0;
}//Dbacc::initialiseSrVerRec()

/* --------------------------------------------------------------------------------- */
/* INITIALISE_TABLE_REC                                                              */
/*              INITIALATES THE TABLE RECORDS.                                       */
/* --------------------------------------------------------------------------------- */
void Dbacc::initialiseTableRec(Signal* signal) 
{
  ndbrequire(ctablesize > 0);
  for (tabptr.i = 0; tabptr.i < ctablesize; tabptr.i++) {
    ptrAss(tabptr, tabrec);
    for (Uint32 i = 0; i < NO_OF_FRAG_PER_NODE; i++) {
      tabptr.p->fragholder[i] = RNIL;
      tabptr.p->fragptrholder[i] = RNIL;
    }//for
  }//for
}//Dbacc::initialiseTableRec()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF SYSTEM RESTART MODULE                                                */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       ADD/DELETE FRAGMENT MODULE                                                  */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */

void Dbacc::initRootfragrec(Signal* signal)
{
  const AccFragReq * const req = (AccFragReq*)&signal->theData[0];  
  rootfragrecptr.p->mytabptr = req->tableId;
  rootfragrecptr.p->roothashcheck = req->kValue + req->lhFragBits;
  rootfragrecptr.p->noOfElements = 0;
  for (Uint32 i = 0; i < MAX_PARALLEL_SCANS_PER_FRAG; i++) {
    rootfragrecptr.p->scan[i] = RNIL;
  }//for
}//Dbacc::initRootfragrec()

void Dbacc::execACCFRAGREQ(Signal* signal) 
{
  const AccFragReq * const req = (AccFragReq*)&signal->theData[0];
  jamEntry();
  tabptr.i = req->tableId;
  ptrCheckGuard(tabptr, ctablesize, tabrec);
  ndbrequire((req->reqInfo & 0xF) == ZADDFRAG);
  ndbrequire(!getrootfragmentrec(signal, rootfragrecptr, req->fragId));
  if (cfirstfreerootfrag == RNIL) {
    jam();
    addFragRefuse(signal, ZFULL_ROOTFRAGRECORD_ERROR);
    return;
  }//if
  seizeRootfragrec(signal);
  if (!addfragtotab(signal, rootfragrecptr.i, req->fragId)) {
    jam();
    releaseRootFragRecord(signal, rootfragrecptr);
    addFragRefuse(signal, ZFULL_ROOTFRAGRECORD_ERROR);
    return;
  }//if
  initRootfragrec(signal);
  for (Uint32 i = 0; i < 2; i++) {
    jam();
    if (cfirstfreefrag == RNIL) {
      jam();
      addFragRefuse(signal, ZFULL_FRAGRECORD_ERROR);
      return;
    }//if
    seizeFragrec(signal);
    initFragGeneral(fragrecptr);
    initFragAdd(signal, i, rootfragrecptr.i, fragrecptr);
    rootfragrecptr.p->fragmentptr[i] = fragrecptr.i;
    rootfragrecptr.p->fragmentid[i] = fragrecptr.p->myfid;
    if (cfirstfreeDirrange == RNIL) {
      jam();
      addFragRefuse(signal, ZDIR_RANGE_ERROR);
      return;
    } else {
      jam();
      seizeDirrange(signal);
    }//if
    fragrecptr.p->directory = newDirRangePtr.i;
    seizeDirectory(signal);
    if (tresult < ZLIMIT_OF_ERROR) {
      jam();
      newDirRangePtr.p->dirArray[0] = sdDirptr.i;
    } else {
      jam();
      addFragRefuse(signal, tresult);
      return;
    }//if
    seizePage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      addFragRefuse(signal, tresult);
      return;
    }//if
    sdDirptr.p->pagep[0] = spPageptr.i;
    tipPageId = 0;
    inpPageptr = spPageptr;
    initPage(signal);
    if (cfirstfreeDirrange == RNIL) {
      jam();
      addFragRefuse(signal, ZDIR_RANGE_ERROR);
      return;
    } else {
      jam();
      seizeDirrange(signal);
    }//if
    fragrecptr.p->overflowdir = newDirRangePtr.i;
    seizeDirectory(signal);
    if (tresult < ZLIMIT_OF_ERROR) {
      jam();
      newDirRangePtr.p->dirArray[0] = sdDirptr.i;
    } else {
      jam();
      addFragRefuse(signal, tresult);
      return;
    }//if
  }//for
  Uint32 userPtr = req->userPtr;
  BlockReference retRef = req->userRef;
  rootfragrecptr.p->rootState = ACTIVEROOT;
  AccFragConf * const conf = (AccFragConf*)&signal->theData[0];

  conf->userPtr = userPtr;
  conf->rootFragPtr = rootfragrecptr.i;
  conf->fragId[0] = rootfragrecptr.p->fragmentid[0];
  conf->fragId[1] = rootfragrecptr.p->fragmentid[1];
  conf->fragPtr[0] = rootfragrecptr.p->fragmentptr[0];
  conf->fragPtr[1] = rootfragrecptr.p->fragmentptr[1];
  conf->rootHashCheck = rootfragrecptr.p->roothashcheck;
  sendSignal(retRef, GSN_ACCFRAGCONF, signal, AccFragConf::SignalLength, JBB);
}//Dbacc::execACCFRAGREQ()

void Dbacc::addFragRefuse(Signal* signal, Uint32 errorCode) 
{
  const AccFragReq * const req = (AccFragReq*)&signal->theData[0];  
  AccFragRef * const ref = (AccFragRef*)&signal->theData[0];  
  Uint32 userPtr = req->userPtr;
  BlockReference retRef = req->userRef;

  ref->userPtr = userPtr;
  ref->errorCode = errorCode;
  sendSignal(retRef, GSN_ACCFRAGREF, signal, AccFragRef::SignalLength, JBB);
  return;
}//Dbacc::addFragRefuseEarly()

void
Dbacc::execDROP_TAB_REQ(Signal* signal){
  jamEntry();
  DropTabReq* req = (DropTabReq*)signal->getDataPtr();

  TabrecPtr tabPtr;
  tabPtr.i = req->tableId;
  ptrCheckGuard(tabPtr, ctablesize, tabrec);
  
  tabPtr.p->tabUserRef = req->senderRef;
  tabPtr.p->tabUserPtr = req->senderData;
  
  signal->theData[0] = ZREL_ROOT_FRAG;
  signal->theData[1] = tabPtr.i;
  sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
}

void Dbacc::releaseRootFragResources(Signal* signal, Uint32 tableId)
{
  RootfragmentrecPtr rootPtr;
  TabrecPtr tabPtr;
  tabPtr.i = tableId;
  ptrCheckGuard(tabPtr, ctablesize, tabrec);
  for (Uint32 i = 0; i < NO_OF_FRAG_PER_NODE; i++) {
    jam();
    if (tabPtr.p->fragholder[i] != RNIL) {
      jam();
      Uint32 fragIndex;
      rootPtr.i = tabPtr.p->fragptrholder[i];
      ptrCheckGuard(rootPtr, crootfragmentsize, rootfragmentrec);
      if (rootPtr.p->fragmentptr[0] != RNIL) {
        jam();
        fragIndex = rootPtr.p->fragmentptr[0];
        rootPtr.p->fragmentptr[0] = RNIL;
      } else if (rootPtr.p->fragmentptr[1] != RNIL) {
        jam();
        fragIndex = rootPtr.p->fragmentptr[1];
        rootPtr.p->fragmentptr[1] = RNIL;
      } else {
        jam();
        releaseRootFragRecord(signal, rootPtr);
        tabPtr.p->fragholder[i] = RNIL;
        tabPtr.p->fragptrholder[i] = RNIL;
        continue;
      }//if
      releaseFragResources(signal, fragIndex);
      return;
    }//if
  }//for

  /**
   * Finished...
   */
  sendFSREMOVEREQ(signal, tableId);  
}//Dbacc::releaseRootFragResources()

void Dbacc::releaseRootFragRecord(Signal* signal, RootfragmentrecPtr rootPtr)
{
  rootPtr.p->nextroot = cfirstfreerootfrag;
  cfirstfreerootfrag = rootPtr.i;
}//Dbacc::releaseRootFragRecord()

void Dbacc::releaseFragResources(Signal* signal, Uint32 fragIndex)
{
  FragmentrecPtr regFragPtr;
  regFragPtr.i = fragIndex;
  ptrCheckGuard(regFragPtr, cfragmentsize, fragmentrec);
  verifyFragCorrect(regFragPtr);
  if (regFragPtr.p->directory != RNIL) {
    jam();
    releaseDirResources(signal, regFragPtr.i, regFragPtr.p->directory, 0);
    regFragPtr.p->directory = RNIL;
  } else if (regFragPtr.p->overflowdir != RNIL) {
    jam();
    releaseDirResources(signal, regFragPtr.i, regFragPtr.p->overflowdir, 0);
    regFragPtr.p->overflowdir = RNIL;
  } else if (regFragPtr.p->firstOverflowRec != RNIL) {
    jam();
    releaseOverflowResources(signal, regFragPtr);
  } else if (regFragPtr.p->firstFreeDirindexRec != RNIL) {
    jam();
    releaseDirIndexResources(signal, regFragPtr);
  } else {
    RootfragmentrecPtr rootPtr;
    jam();
    rootPtr.i = regFragPtr.p->myroot;
    ptrCheckGuard(rootPtr, crootfragmentsize, rootfragmentrec);    
    releaseFragRecord(signal, regFragPtr);
    signal->theData[0] = ZREL_ROOT_FRAG;
    signal->theData[1] = rootPtr.p->mytabptr;
    sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
  }//if
}//Dbacc::releaseFragResources()

void Dbacc::verifyFragCorrect(FragmentrecPtr regFragPtr)
{
  for (Uint32 i = 0; i < ZWRITEPAGESIZE; i++) {
    jam();
    ndbrequire(regFragPtr.p->datapages[i] == RNIL);
  }//for
  ndbrequire(regFragPtr.p->lockOwnersList == RNIL);
  ndbrequire(regFragPtr.p->firstWaitInQueOp == RNIL);
  ndbrequire(regFragPtr.p->lastWaitInQueOp == RNIL);
  ndbrequire(regFragPtr.p->sentWaitInQueOp == RNIL);
  //ndbrequire(regFragPtr.p->fsConnPtr == RNIL);
  ndbrequire(regFragPtr.p->zeroPagePtr == RNIL);
  ndbrequire(regFragPtr.p->nrWaitWriteUndoExit == 0);
  ndbrequire(regFragPtr.p->sentWaitInQueOp == RNIL);
}//Dbacc::verifyFragCorrect()

void Dbacc::releaseDirResources(Signal* signal, 
				Uint32 fragIndex, 
				Uint32 dirIndex, 
				Uint32 startIndex)
{
  DirRangePtr regDirRangePtr;
  regDirRangePtr.i = dirIndex;
  ptrCheckGuard(regDirRangePtr, cdirrangesize, dirRange);
  for (Uint32 i = startIndex; i < 256; i++) {
    jam();
    if (regDirRangePtr.p->dirArray[i] != RNIL) {
      jam();
      Uint32 directoryIndex = regDirRangePtr.p->dirArray[i];
      regDirRangePtr.p->dirArray[i] = RNIL;
      releaseDirectoryResources(signal, fragIndex, dirIndex, (i + 1), directoryIndex);
      return;
    }//if
  }//for
  rdDirRangePtr = regDirRangePtr;
  releaseDirrange(signal);
  signal->theData[0] = ZREL_FRAG;
  signal->theData[1] = fragIndex;
  sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
}//Dbacc::releaseDirResources()

void Dbacc::releaseDirectoryResources(Signal* signal,
                                      Uint32 fragIndex,
                                      Uint32 dirIndex,
                                      Uint32 startIndex,
                                      Uint32 directoryIndex)
{
  DirectoryarrayPtr regDirPtr;
  regDirPtr.i = directoryIndex;
  ptrCheckGuard(regDirPtr, cdirarraysize, directoryarray);
  for (Uint32 i = 0; i < 256; i++) {
    jam();
    if (regDirPtr.p->pagep[i] != RNIL) {
      jam();
      rpPageptr.i = regDirPtr.p->pagep[i];
      ptrCheckGuard(rpPageptr, cpagesize, page8);
      releasePage(signal);
      regDirPtr.p->pagep[i] = RNIL;
    }//if
  }//for
  rdDirptr = regDirPtr;
  releaseDirectory(signal);
  signal->theData[0] = ZREL_DIR;
  signal->theData[1] = fragIndex;
  signal->theData[2] = dirIndex;
  signal->theData[3] = startIndex;
  sendSignal(cownBlockref, GSN_CONTINUEB, signal, 4, JBB);
}//Dbacc::releaseDirectoryResources()

void Dbacc::releaseOverflowResources(Signal* signal, FragmentrecPtr regFragPtr)
{
  Uint32 loopCount = 0;
  OverflowRecordPtr regOverflowRecPtr;
  while ((regFragPtr.p->firstOverflowRec != RNIL) &&
         (loopCount < 1)) {
    jam();
    regOverflowRecPtr.i = regFragPtr.p->firstOverflowRec;
    ptrCheckGuard(regOverflowRecPtr, coverflowrecsize, overflowRecord);
    regFragPtr.p->firstOverflowRec = regOverflowRecPtr.p->nextOverRec;
    rorOverflowRecPtr = regOverflowRecPtr;
    releaseOverflowRec(signal);
    loopCount++;
  }//while
  signal->theData[0] = ZREL_FRAG;
  signal->theData[1] = regFragPtr.i;
  sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
}//Dbacc::releaseOverflowResources()

void Dbacc::releaseDirIndexResources(Signal* signal, FragmentrecPtr regFragPtr)
{
  Uint32 loopCount = 0;
  OverflowRecordPtr regOverflowRecPtr;
  while ((regFragPtr.p->firstFreeDirindexRec != RNIL) &&
         (loopCount < 1)) {
    jam();
    regOverflowRecPtr.i = regFragPtr.p->firstFreeDirindexRec;
    ptrCheckGuard(regOverflowRecPtr, coverflowrecsize, overflowRecord);
    regFragPtr.p->firstFreeDirindexRec = regOverflowRecPtr.p->nextOverList;
    rorOverflowRecPtr = regOverflowRecPtr;
    releaseOverflowRec(signal);
    loopCount++;
  }//while
  signal->theData[0] = ZREL_FRAG;
  signal->theData[1] = regFragPtr.i;
  sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
}//Dbacc::releaseDirIndexResources()

void Dbacc::releaseFragRecord(Signal* signal, FragmentrecPtr regFragPtr) 
{
  regFragPtr.p->nextfreefrag = cfirstfreefrag;
  cfirstfreefrag = regFragPtr.i;
  initFragGeneral(regFragPtr);
}//Dbacc::releaseFragRecord()

void Dbacc::sendFSREMOVEREQ(Signal* signal, Uint32 tableId)
{
  FsRemoveReq * const fsReq = (FsRemoveReq *)signal->getDataPtrSend();
  fsReq->userReference = cownBlockref;
  fsReq->userPointer = tableId;
  fsReq->fileNumber[0] = tableId;
  fsReq->fileNumber[1] = (Uint32)-1; // Remove all fragments
  fsReq->fileNumber[2] = (Uint32)-1; // Remove all data files within fragment
  fsReq->fileNumber[3] = 255 |       // No P-value used here
    (3 << 8) |  // Data-files in D3
    (0 << 16) | // Data-files
    (1 << 24);  // Version 1 of fileNumber
  fsReq->directory = 1;
  fsReq->ownDirectory = 1;
  sendSignal(NDBFS_REF, GSN_FSREMOVEREQ, signal, FsRemoveReq::SignalLength, JBA);  
}//Dbacc::sendFSREMOVEREQ()

void Dbacc::execFSREMOVECONF(Signal* signal)
{
  FsConf * const fsConf = (FsConf *)signal->getDataPtrSend();
  TabrecPtr tabPtr;
  tabPtr.i = fsConf->userPointer;
  ptrCheckGuard(tabPtr, ctablesize, tabrec);

  DropTabConf * const dropConf = (DropTabConf *)signal->getDataPtrSend();
  dropConf->senderRef = reference();
  dropConf->senderData = tabPtr.p->tabUserPtr;
  dropConf->tableId = tabPtr.i;
  sendSignal(tabPtr.p->tabUserRef, GSN_DROP_TAB_CONF,
             signal, DropTabConf::SignalLength, JBB);
  
  tabPtr.p->tabUserPtr = RNIL;
  tabPtr.p->tabUserRef = 0;
}//Dbacc::execFSREMOVECONF()

void Dbacc::execFSREMOVEREF(Signal* signal)
{
  ndbrequire(false);
}//Dbacc::execFSREMOVEREF()

/* -------------------------------------------------------------------------- */
/* ADDFRAGTOTAB                                                               */
/*       DESCRIPTION: PUTS A FRAGMENT ID AND A POINTER TO ITS RECORD INTO     */
/*                                TABLE ARRRAY OF THE TABLE RECORD.           */
/* -------------------------------------------------------------------------- */
bool Dbacc::addfragtotab(Signal* signal, Uint32 rootIndex, Uint32 fid) 
{
  for (Uint32 i = 0; i < NO_OF_FRAG_PER_NODE; i++) {
    jam();
    if (tabptr.p->fragholder[i] == RNIL) {
      jam();
      tabptr.p->fragholder[i] = fid;
      tabptr.p->fragptrholder[i] = rootIndex;
      return true;
    }//if
  }//for
  return false;
}//Dbacc::addfragtotab()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF ADD/DELETE FRAGMENT MODULE                                           */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       CONNECTION MODULE                                                           */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACCSEIZEREQ                                           SEIZE REQ                   */
/*                                                    SENDER: LQH,    LEVEL B        */
/*          ENTER ACCSEIZEREQ WITH                                                   */
/*                    TUSERPTR ,                     CONECTION PTR OF LQH            */
/*                    TUSERBLOCKREF                  BLOCK REFERENCE OF LQH          */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACCSEIZEREQ                                           SEIZE REQ                   */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACCSEIZEREQ(Signal* signal) 
{
  jamEntry();
  tuserptr = signal->theData[0];
  /* CONECTION PTR OF LQH            */
  tuserblockref = signal->theData[1];
  /* BLOCK REFERENCE OF LQH          */
  tresult = 0;
  if (cfreeopRec == RNIL) {
    jam();
    refaccConnectLab(signal);
    return;
  }//if
  seizeOpRec(signal);
  ptrGuard(operationRecPtr);
  operationRecPtr.p->userptr = tuserptr;
  operationRecPtr.p->userblockref = tuserblockref;
  operationRecPtr.p->operation = ZUNDEFINED_OP;
  operationRecPtr.p->transactionstate = IDLE;
  /* ******************************< */
  /* ACCSEIZECONF                    */
  /* ******************************< */
  signal->theData[0] = tuserptr;
  signal->theData[1] = operationRecPtr.i;
  sendSignal(tuserblockref, GSN_ACCSEIZECONF, signal, 2, JBB);
  return;
}//Dbacc::execACCSEIZEREQ()

void Dbacc::refaccConnectLab(Signal* signal) 
{
  tresult = ZCONNECT_SIZE_ERROR;
  /* ******************************< */
  /* ACCSEIZEREF                     */
  /* ******************************< */
  signal->theData[0] = tuserptr;
  signal->theData[1] = tresult;
  sendSignal(tuserblockref, GSN_ACCSEIZEREF, signal, 2, JBB);
  return;
}//Dbacc::refaccConnectLab()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF CONNECTION MODULE                                                    */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       EXECUTE OPERATION MODULE                                                    */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* INIT_OP_REC                                                                       */
/*           INFORMATION WHICH IS RECIEVED BY ACCKEYREQ WILL BE SAVED                */
/*           IN THE OPERATION RECORD.                                                */
/* --------------------------------------------------------------------------------- */
void Dbacc::initOpRec(Signal* signal) 
{
  register Uint32 Treqinfo;

  Treqinfo = signal->theData[2];

  operationRecPtr.p->hashValue = signal->theData[3];
  operationRecPtr.p->tupkeylen = signal->theData[4];
  operationRecPtr.p->transId1 = signal->theData[5];
  operationRecPtr.p->transId2 = signal->theData[6];
  operationRecPtr.p->transactionstate = ACTIVE;
  operationRecPtr.p->commitDeleteCheckFlag = ZFALSE;
  operationRecPtr.p->operation = Treqinfo & 0x7;
  /* --------------------------------------------------------------------------------- */
  // opSimple is not used in this version. Is needed for deadlock handling later on.
  /* --------------------------------------------------------------------------------- */
  //  operationRecPtr.p->opSimple = (Treqinfo >> 3) & 0x1; 

  operationRecPtr.p->lockMode = (Treqinfo >> 4) & 0x3;

  Uint32 readFlag = (((Treqinfo >> 4) & 0x3) == 0);      // Only 1 if Read
  Uint32 dirtyFlag = (((Treqinfo >> 6) & 0x1) == 1);     // Only 1 if Dirty
  Uint32 dirtyReadFlag = readFlag & dirtyFlag;
  operationRecPtr.p->dirtyRead = dirtyReadFlag;

  operationRecPtr.p->nodeType = (Treqinfo >> 7) & 0x3;
  operationRecPtr.p->fid = fragrecptr.p->myfid;
  operationRecPtr.p->fragptr = fragrecptr.i;
  operationRecPtr.p->nextParallelQue = RNIL;
  operationRecPtr.p->prevParallelQue = RNIL;
  operationRecPtr.p->prevQueOp = RNIL;
  operationRecPtr.p->nextQueOp = RNIL;
  operationRecPtr.p->nextSerialQue = RNIL;
  operationRecPtr.p->prevSerialQue = RNIL;
  operationRecPtr.p->elementPage = RNIL;
  operationRecPtr.p->keyinfoPage = RNIL;
  operationRecPtr.p->lockOwner = ZFALSE;
  operationRecPtr.p->insertIsDone = ZFALSE;
  operationRecPtr.p->elementIsDisappeared = ZFALSE;
  operationRecPtr.p->insertDeleteLen = fragrecptr.p->elementLength;
  operationRecPtr.p->longPagePtr = RNIL;
  operationRecPtr.p->longKeyPageIndex = RNIL;
  operationRecPtr.p->scanRecPtr = RNIL;

  // bit to mark lock operation
  operationRecPtr.p->isAccLockReq = (Treqinfo >> 31) & 0x1;
}//Dbacc::initOpRec()

/* --------------------------------------------------------------------------------- */
/* SEND_ACCKEYCONF                                                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::sendAcckeyconf(Signal* signal) 
{
  signal->theData[0] = operationRecPtr.p->userptr;
  signal->theData[1] = operationRecPtr.p->insertIsDone;
  signal->theData[2] = operationRecPtr.p->fid;
  signal->theData[3] = operationRecPtr.p->localdata[0];
  signal->theData[4] = operationRecPtr.p->localdata[1];
  signal->theData[5] = fragrecptr.p->localkeylen;
}//Dbacc::sendAcckeyconf()


void Dbacc::ACCKEY_error(Uint32 fromWhere)
{
  switch(fromWhere) {
  case 0:
    ndbrequire(false);
  case 1:
    ndbrequire(false);
  case 2:
    ndbrequire(false);
  case 3:
    ndbrequire(false);
  case 4:
    ndbrequire(false);
  case 5:
    ndbrequire(false);
  case 6:
    ndbrequire(false);
  case 7:
    ndbrequire(false);
  case 8:
    ndbrequire(false);
  case 9:
    ndbrequire(false);
  default:
    ndbrequire(false);
  }//switch
}//Dbacc::ACCKEY_error()

/* ******************--------------------------------------------------------------- */
/* ACCKEYREQ                                         REQUEST FOR INSERT, DELETE,     */
/*                                                   RERAD AND UPDATE, A TUPLE.      */
/*                                                   SENDER: LQH,    LEVEL B         */
/*  SIGNAL DATA:      OPERATION_REC_PTR,             CONNECTION PTR                  */
/*                    TABPTR,                        TABLE ID = TABLE RECORD POINTER */
/*                    TREQINFO,                                                      */
/*                    THASHVALUE,                    HASH VALUE OF THE TUP           */
/*                    TKEYLEN,                       LENGTH OF THE PRIMARY KEYS      */
/*                    TKEY1,                         PRIMARY KEY 1                   */
/*                    TKEY2,                         PRIMARY KEY 2                   */
/*                    TKEY3,                         PRIMARY KEY 3                   */
/*                    TKEY4,                         PRIMARY KEY 4                   */
/* ******************--------------------------------------------------------------- */
void Dbacc::execACCKEYREQ(Signal* signal) 
{
  jamEntry();
  operationRecPtr.i = signal->theData[0];   /* CONNECTION PTR */
  fragrecptr.i = signal->theData[1];        /* FRAGMENT RECORD POINTER         */
  if (!((operationRecPtr.i < coprecsize) ||
	(fragrecptr.i < cfragmentsize))) {
    ACCKEY_error(0);
    return;
  }//if
  ptrAss(operationRecPtr, operationrec);
  ptrAss(fragrecptr, fragmentrec);  
  ndbrequire(operationRecPtr.p->transactionstate == IDLE);

  initOpRec(signal);
  /*---------------------------------------------------------------*/
  /*                                                               */
  /*       WE WILL USE THE HASH VALUE TO LOOK UP THE PROPER MEMORY */
  /*       PAGE AND MEMORY PAGE INDEX TO START THE SEARCH WITHIN.  */
  /*       WE REMEMBER THESE ADDRESS IF WE LATER NEED TO INSERT    */
  /*       THE ITEM AFTER NOT FINDING THE ITEM.                    */
  /*---------------------------------------------------------------*/
  getElement(signal);
  
  if (tgeResult == ZTRUE) {
    switch (operationRecPtr.p->operation) {
    case ZREAD:
    case ZUPDATE:
    case ZDELETE:
    case ZWRITE:
    case ZSCAN_OP:
      if (!tgeLocked){
        sendAcckeyconf(signal);
        if (operationRecPtr.p->dirtyRead == ZFALSE) {
	  /*---------------------------------------------------------------*/
	  // It is not a dirty read. We proceed by locking and continue with
	  // the operation.
	  /*---------------------------------------------------------------*/
          Uint32 eh = gePageptr.p->word32[tgeElementptr];
          operationRecPtr.p->scanBits = ElementHeader::getScanBits(eh);
          operationRecPtr.p->hashvaluePart = ElementHeader::getHashValuePart(eh);
          operationRecPtr.p->elementPage = gePageptr.i;
          operationRecPtr.p->elementContainer = tgeContainerptr;
          operationRecPtr.p->elementPointer = tgeElementptr;
          operationRecPtr.p->elementIsforward = tgeForward;

	  eh = ElementHeader::setLocked(operationRecPtr.i);
          dbgWord32(gePageptr, tgeElementptr, eh);
          gePageptr.p->word32[tgeElementptr] = eh;
	  
	  insertLockOwnersList(signal , operationRecPtr);
          return;
        } else {
          jam();
	  /*---------------------------------------------------------------*/
	  // It is a dirty read. We do not lock anything. Set state to
	  // IDLE since no COMMIT call will come.
	  /*---------------------------------------------------------------*/
          operationRecPtr.p->transactionstate = IDLE;
          operationRecPtr.p->operation = ZUNDEFINED_OP;
          return;
        }//if
      } else {
        jam();
        accIsLockedLab(signal);
        return;
      }//if
      break;
    case ZINSERT:
      jam();
      insertExistElemLab(signal);
      return;
      break;
    default:
      ndbrequire(false);
      break;
    }//switch
  } else if (tgeResult == ZFALSE) {
    switch (operationRecPtr.p->operation) {
    case ZINSERT:
    case ZWRITE:
      jam();
      // If a write operation makes an insert we switch operation to ZINSERT so
      // that the commit-method knows an insert has been made and updates noOfElements.
      operationRecPtr.p->operation = ZINSERT;
      operationRecPtr.p->insertIsDone = ZTRUE;
      insertelementLab(signal);
      return;
      break;
    case ZREAD:
    case ZUPDATE:
    case ZDELETE:
    case ZSCAN_OP:
      jam();
      acckeyref1Lab(signal, ZREAD_ERROR);
      return;
      break;
    default:
      ndbrequire(false);
      break;
    }//switch
  } else {
    jam();
    acckeyref1Lab(signal, tgeResult);
    return;
  }//if
  return;
}//Dbacc::execACCKEYREQ()

void Dbacc::accIsLockedLab(Signal* signal) 
{
  ndbrequire(csystemRestart == ZFALSE);
  queOperPtr.i = ElementHeader::getOpPtrI(gePageptr.p->word32[tgeElementptr]);
  ptrCheckGuard(queOperPtr, coprecsize, operationrec);
  if (operationRecPtr.p->dirtyRead == ZFALSE) {
    Uint32 return_result;
    if (operationRecPtr.p->lockMode == ZREADLOCK) {
      jam();
      priPageptr = gePageptr;
      tpriElementptr = tgeElementptr;
      return_result = placeReadInLockQueue(signal);
    } else {
      jam();
      pwiPageptr = gePageptr;
      tpwiElementptr = tgeElementptr;
      return_result = placeWriteInLockQueue(signal);
    }//if
    if (return_result == ZPARALLEL_QUEUE) {
      jam();
      sendAcckeyconf(signal);
      return;
    } else if (return_result == ZSERIAL_QUEUE) {
      jam();
      signal->theData[0] = RNIL;
      return;
    } else if (return_result == ZWRITE_ERROR) {
      jam();
      acckeyref1Lab(signal, return_result);
      return;
    }//if
    ndbrequire(false);
  } else {
    if (queOperPtr.p->elementIsDisappeared == ZFALSE) {
      jam();
      /*---------------------------------------------------------------*/
      // It is a dirty read. We do not lock anything. Set state to
      // IDLE since no COMMIT call will arrive.
      /*---------------------------------------------------------------*/
      sendAcckeyconf(signal);
      operationRecPtr.p->transactionstate = IDLE;
      operationRecPtr.p->operation = ZUNDEFINED_OP;
      return;
    } else {
      jam();
      /*---------------------------------------------------------------*/
      // The tuple does not exist in the committed world currently.
      // Report read error.
      /*---------------------------------------------------------------*/
      acckeyref1Lab(signal, ZREAD_ERROR);
      return;
    }//if
  }//if
}//Dbacc::accIsLockedLab()

/* --------------------------------------------------------------------------------- */
/*        I N S E R T      E X I S T      E L E M E N T                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::insertExistElemLab(Signal* signal) 
{
  if (!tgeLocked){
    jam();
    acckeyref1Lab(signal, ZWRITE_ERROR);/* THE ELEMENT ALREADY EXIST */
    return;
  }//if
  accIsLockedLab(signal);
}//Dbacc::insertExistElemLab()

/* --------------------------------------------------------------------------------- */
/* INSERTELEMENT                                                                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::insertelementLab(Signal* signal) 
{
  Uint32 tinsKeyLen;
  
  if (fragrecptr.p->createLcp == ZTRUE) {
    if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_OPERATION) {
      jam();
      acckeyref1Lab(signal, ZTEMPORARY_ACC_UNDO_FAILURE);
      return;
    }//if
  }//if
  if (fragrecptr.p->firstOverflowRec == RNIL) {
    jam();
    allocOverflowPage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      acckeyref1Lab(signal, tresult);
      return;
    }//if
  }//if
  if (fragrecptr.p->keyLength != operationRecPtr.p->tupkeylen) {
    ndbrequire(fragrecptr.p->keyLength == 0);
  }//if
  if (fragrecptr.p->keyLength != 0) {
    ndbrequire(operationRecPtr.p->tupkeylen <= 8);
    for (Uint32 i = 0; i < operationRecPtr.p->tupkeylen; i++) {
      jam();
      ckeys[i] = signal->theData[i + 7];
    }//for
    tinsKeyLen = operationRecPtr.p->tupkeylen;
  } else {
    jam();
    seizePage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      acckeyref1Lab(signal, tresult);
      return;
    }//if
    operationRecPtr.p->keyinfoPage = spPageptr.i;
    for (Uint32 i = 0; i < signal->theData[4]; i++) {
      spPageptr.p->word32[i] = signal->theData[i + 7];
    }//for
  
    getLongKeyPage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      acckeyref1Lab(signal, tresult);
      return;
    }//if
    slkPageptr = glkPageptr;
    slkCopyPageptr.i = operationRecPtr.p->keyinfoPage;
    ptrCheckGuard(slkCopyPageptr, cpagesize, page8);
    tslkKeyLen = operationRecPtr.p->tupkeylen;
    storeLongKeys(signal);
    ckeys[0] = (slkPageptr.p->word32[ZPOS_PAGE_ID] << 10) + tslkPageIndex;
    tinsKeyLen = ZACTIVE_LONG_KEY_LEN;
    rpPageptr.i = operationRecPtr.p->keyinfoPage;
    ptrCheckGuard(rpPageptr, cpagesize, page8);
    releasePage(signal);
    operationRecPtr.p->keyinfoPage = RNIL;
  }//if

  signal->theData[0] = operationRecPtr.p->userptr;
  Uint32 blockNo = refToBlock(operationRecPtr.p->userblockref);
  EXECUTE_DIRECT(blockNo, GSN_LQH_ALLOCREQ, signal, 1);
  jamEntry();
  if (signal->theData[0] != 0) {
    jam();
    Uint32 result_code = signal->theData[0];
    acckeyref1Lab(signal, result_code);
    return;
  }//if
  Uint32 localKey = (signal->theData[1] << MAX_TUPLES_BITS) + signal->theData[2];

  insertLockOwnersList(signal, operationRecPtr);

  const Uint32 tmp = fragrecptr.p->k + fragrecptr.p->lhfragbits;
  operationRecPtr.p->hashvaluePart = 
    (operationRecPtr.p->hashValue >> tmp) & 0xFFFF;
  operationRecPtr.p->scanBits = 0;	/* NOT ANY ACTIVE SCAN */
  tidrElemhead = ElementHeader::setLocked(operationRecPtr.i);
  idrPageptr = gdiPageptr;
  tidrPageindex = tgdiPageindex;
  tidrForward = ZTRUE;
  tidrKeyLen = tinsKeyLen;
  idrOperationRecPtr = operationRecPtr;
  clocalkey[0] = localKey;
  operationRecPtr.p->localdata[0] = localKey;
  /* --------------------------------------------------------------------------------- */
  /*       WE SET THE LOCAL KEY TO MINUS ONE TO INDICATE IT IS NOT YET VALID.          */
  /* --------------------------------------------------------------------------------- */
  insertElement(signal);
  sendAcckeyconf(signal);
  return;
}//Dbacc::insertelementLab()

/* --------------------------------------------------------------------------------- */
/* PLACE_READ_IN_LOCK_QUEUE                                                          */
/*	INPUT:		OPERATION_REC_PTR	OUR OPERATION POINTER		    */
/*			QUE_OPER_PTR		LOCK QUEUE OWNER OPERATION POINTER  */
/*			PRI_PAGEPTR             PAGE POINTER OF ELEMENT             */
/*			TPRI_ELEMENTPTR         ELEMENT POINTER OF ELEMENT          */
/*	OUTPUT		TRESULT =                                                   */
/*			ZPARALLEL_QUEUE		OPERATION PLACED IN PARALLEL QUEUE  */
/*						OPERATION CAN PROCEED NOW.          */
/*			ZSERIAL_QUEUE		OPERATION PLACED IN SERIAL QUEUE    */
/*			ERROR CODE		OPERATION NEEDS ABORTING            */
/* THE ELEMENT WAS LOCKED AND WE WANT TO READ THE TUPLE. WE WILL CHECK THE LOCK      */
/* QUEUES TO PERFORM THE PROPER ACTION.                                              */
/*                                                                                   */
/* IN SOME PLACES IN THE CODE BELOW THAT HANDLES WHAT TO DO WHEN THE TUPLE IS LOCKED */
/* WE DO ASSUME THAT NEXT_PARALLEL_QUEUE AND NEXT_SERIAL_QUEUE ON OPERATION_REC_PTR  */
/* HAVE BEEN INITIALISED TO RNIL. THUS WE DO NOT PERFORM THIS ONCE MORE EVEN IF IT   */
/* COULD BE NICE FOR READABILITY.                                                    */
/* --------------------------------------------------------------------------------- */
Uint32 Dbacc::placeReadInLockQueue(Signal* signal) 
{
  tgnptMainOpPtr = queOperPtr;
  getNoParallelTransaction(signal);
  if (tgnptNrTransaction == 1) {
    if ((queOperPtr.p->transId1 == operationRecPtr.p->transId1) && 
        (queOperPtr.p->transId2 == operationRecPtr.p->transId2)) {
      /* --------------------------------------------------------------------------------- */
      /* WE ARE PERFORMING A READ OPERATION AND THIS TRANSACTION ALREADY OWNS THE LOCK     */
      /* ALONE. PUT THE OPERATION LAST IN THE PARALLEL QUEUE.                              */
      /* --------------------------------------------------------------------------------- */
      jam();
      mlpqOperPtr = queOperPtr;
      moveLastParallelQueue(signal);
      operationRecPtr.p->localdata[0] = queOperPtr.p->localdata[0];
      operationRecPtr.p->localdata[1] = queOperPtr.p->localdata[1];
      operationRecPtr.p->prevParallelQue = mlpqOperPtr.i;
      mlpqOperPtr.p->nextParallelQue = operationRecPtr.i;
      switch (queOperPtr.p->lockMode) {
      case ZREADLOCK:
        jam();
        /*empty*/;
        break;
      default:
        jam();
        /* --------------------------------------------------------------------------------- */
        /*       IF THE TRANSACTION PREVIOUSLY SET A WRITE LOCK WE MUST ENSURE THAT ALL      */
        /*       OPERATIONS IN THE PARALLEL QUEUE HAVE WRITE LOCK MODE TO AVOID STRANGE BUGS.*/
        /* --------------------------------------------------------------------------------- */
        operationRecPtr.p->lockMode = queOperPtr.p->lockMode;
        break;
      }//switch
      return ZPARALLEL_QUEUE;
    }//if
  }//if
  if (queOperPtr.p->nextSerialQue == RNIL) {
    /* --------------------------------------------------------------------------------- */
    /* WE ARE PERFORMING A READ OPERATION AND THERE IS NO SERIAL QUEUE. IF THERE IS NO   */
    /* WRITE OPERATION THAT OWNS THE LOCK OR ANY WRITE OPERATION IN THE PARALLEL QUEUE   */
    /* IT IS ENOUGH TO CHECK THE LOCK MODE OF THE LEADER IN THE PARALLEL QUEUE. IF IT IS */
    /* A READ LOCK THEN WE PLACE OURSELVES IN THE PARALLEL QUEUE OTHERWISE WE GO ON TO   */
    /* PLACE OURSELVES IN THE SERIAL QUEUE.                                              */
    /* --------------------------------------------------------------------------------- */
    switch (queOperPtr.p->lockMode) {
    case ZREADLOCK:
      jam();
      mlpqOperPtr = queOperPtr;
      moveLastParallelQueue(signal);
      operationRecPtr.p->prevParallelQue = mlpqOperPtr.i;
      mlpqOperPtr.p->nextParallelQue = operationRecPtr.i;
      operationRecPtr.p->localdata[0] = queOperPtr.p->localdata[0];
      operationRecPtr.p->localdata[1] = queOperPtr.p->localdata[1];
      return ZPARALLEL_QUEUE;
    default:
      jam();
      queOperPtr.p->nextSerialQue = operationRecPtr.i;
      operationRecPtr.p->prevSerialQue = queOperPtr.i;
      putOpInFragWaitQue(signal);
      break;
    }//switch
  } else {
    jam();
    placeSerialQueueRead(signal);
  }//if
  return ZSERIAL_QUEUE;
}//Dbacc::placeReadInLockQueue()

/* --------------------------------------------------------------------------------- */
/* WE WILL CHECK IF THIS TRANSACTION IS ALREADY PLACED AT SOME SPOT IN THE PARALLEL  */
/* SERIAL QUEUE WITHOUT ANY NEIGHBORS FROM OTHER TRANSACTION. IF SO WE WILL INSERT   */
/* IT IN THAT PARALLEL QUEUE.                                                        */
/* --------------------------------------------------------------------------------- */
void Dbacc::placeSerialQueueRead(Signal* signal) 
{
  readWriteOpPtr.i = queOperPtr.p->nextSerialQue;
  ptrCheckGuard(readWriteOpPtr, coprecsize, operationrec);
 PSQR_LOOP:
  jam();
  if (readWriteOpPtr.p->nextSerialQue == RNIL) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THERE WAS NO PREVIOUS OPERATION IN THIS TRANSACTION WHICH WE COULD PUT IT   */
    /*       IN THE PARALLEL QUEUE TOGETHER WITH.                                        */
    /* --------------------------------------------------------------------------------- */
    checkOnlyReadEntry(signal);
    return;
  }//if
  tgnptMainOpPtr = readWriteOpPtr;
  getNoParallelTransaction(signal);
  if (tgnptNrTransaction == 1) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /* THERE WAS ONLY ONE TRANSACTION INVOLVED IN THE PARALLEL QUEUE. IF THIS IS OUR     */
    /* TRANSACTION WE CAN STILL GET HOLD OF THE LOCK.                                    */
    /* --------------------------------------------------------------------------------- */
    if ((readWriteOpPtr.p->transId1 == operationRecPtr.p->transId1) && 
        (readWriteOpPtr.p->transId2 == operationRecPtr.p->transId2)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /* WE ARE PERFORMING A READ IN THE SAME TRANSACTION WHERE WE ALREADY                 */
      /* PREVIOUSLY HAVE EXECUTED AN OPERATION. INSERT-DELETE, READ-UPDATE, READ-READ,     */
      /* UPDATE-UPDATE, UPDATE-DELETE, READ-DELETE, INSERT-READ, INSERT-UPDATE ARE ALLOWED */
      /* COMBINATIONS. A NEW INSERT AFTER A DELETE IS NOT ALLOWED AND SUCH AN INSERT WILL  */
      /* GO TO THE SERIAL LOCK QUEUE WHICH IT WILL NOT LEAVE UNTIL A TIME-OUT AND THE      */
      /* TRANSACTION IS ABORTED. READS AND UPDATES AFTER DELETES IS ALSO NOT ALLOWED.      */
      /* --------------------------------------------------------------------------------- */
      mlpqOperPtr = readWriteOpPtr;
      moveLastParallelQueue(signal);
      readWriteOpPtr = mlpqOperPtr;
      operationRecPtr.p->prevParallelQue = readWriteOpPtr.i;
      readWriteOpPtr.p->nextParallelQue = operationRecPtr.i;
      operationRecPtr.p->localdata[0] = readWriteOpPtr.p->localdata[0];
      operationRecPtr.p->localdata[1] = readWriteOpPtr.p->localdata[1];
      switch (readWriteOpPtr.p->lockMode) {
      case ZREADLOCK:
        jam();
        /*empty*/;
        break;
      default:
        jam();
        /* --------------------------------------------------------------------------------- */
        /*       IF THE TRANSACTION PREVIOUSLY SET A WRITE LOCK WE MUST ENSURE THAT ALL      */
        /*       OPERATIONS IN THE PARALLEL QUEUE HAVE WRITE LOCK MODE TO AVOID STRANGE BUGS.*/
        /* --------------------------------------------------------------------------------- */
        operationRecPtr.p->lockMode = readWriteOpPtr.p->lockMode;
        break;
      }//switch
      putOpInFragWaitQue(signal);
      return;
    }//if
  }//if
  readWriteOpPtr.i = readWriteOpPtr.p->nextSerialQue;
  ptrCheckGuard(readWriteOpPtr, coprecsize, operationrec);
  goto PSQR_LOOP;
}//Dbacc::placeSerialQueueRead()

/* --------------------------------------------------------------------------------- */
/*       WE WILL CHECK IF THE LAST ENTRY IN THE SERIAL QUEUE CONTAINS ONLY READ      */
/*       OPERATIONS. IF SO WE WILL INSERT IT IN THAT PARALLEL QUEUE. OTHERWISE WE    */
/*       WILL PLACE IT AT THE END OF THE SERIAL QUEUE.                               */
/* --------------------------------------------------------------------------------- */
void Dbacc::checkOnlyReadEntry(Signal* signal) 
{
  switch (readWriteOpPtr.p->lockMode) {
  case ZREADLOCK:
    jam();
    /* --------------------------------------------------------------------------------- */
    /* SINCE THIS LAST QUEUE ONLY CONTAINS READ LOCKS WE CAN JOIN THE PARALLEL QUEUE AT  */
    /* THE END.                                                                          */
    /* --------------------------------------------------------------------------------- */
    mlpqOperPtr = readWriteOpPtr;
    moveLastParallelQueue(signal);
    readWriteOpPtr = mlpqOperPtr;
    operationRecPtr.p->prevParallelQue = readWriteOpPtr.i;
    readWriteOpPtr.p->nextParallelQue = operationRecPtr.i;
    operationRecPtr.p->localdata[0] = readWriteOpPtr.p->localdata[0];
    operationRecPtr.p->localdata[1] = readWriteOpPtr.p->localdata[1];
    break;
  default:
    jam();                             /* PUT THE OPERATION RECORD IN THE SERIAL QUEUE */
    readWriteOpPtr.p->nextSerialQue = operationRecPtr.i;
    operationRecPtr.p->prevSerialQue = readWriteOpPtr.i;
    break;
  }//switch
  putOpInFragWaitQue(signal);
}//Dbacc::checkOnlyReadEntry()

/* --------------------------------------------------------------------------------- */
/* GET_NO_PARALLEL_TRANSACTION                                                       */
/* --------------------------------------------------------------------------------- */
void Dbacc::getNoParallelTransaction(Signal* signal) 
{
  OperationrecPtr tnptOpPtr;

  tgnptNrTransaction = 1;
  tnptOpPtr.i = tgnptMainOpPtr.p->nextParallelQue;
  while ((tnptOpPtr.i != RNIL) &&
         (tgnptNrTransaction == 1)) {
    jam();
    ptrCheckGuard(tnptOpPtr, coprecsize, operationrec);
    if ((tnptOpPtr.p->transId1 == tgnptMainOpPtr.p->transId1) &&
        (tnptOpPtr.p->transId2 == tgnptMainOpPtr.p->transId2)) {
      tnptOpPtr.i = tnptOpPtr.p->nextParallelQue;
    } else {
      jam();
      tgnptNrTransaction++;
    }//if
  }//while
}//Dbacc::getNoParallelTransaction()

void Dbacc::moveLastParallelQueue(Signal* signal) 
{
  while (mlpqOperPtr.p->nextParallelQue != RNIL) {
    jam();
    mlpqOperPtr.i = mlpqOperPtr.p->nextParallelQue;
    ptrCheckGuard(mlpqOperPtr, coprecsize, operationrec);
  }//if
}//Dbacc::moveLastParallelQueue()

void Dbacc::moveLastParallelQueueWrite(Signal* signal) 
{
  /* --------------------------------------------------------------------------------- */
  /*       ENSURE THAT ALL OPERATIONS HAVE LOCK MODE SET TO WRITE SINCE WE INSERT A    */
  /*       WRITE LOCK INTO THE PARALLEL QUEUE.                                         */
  /* --------------------------------------------------------------------------------- */
  while (mlpqOperPtr.p->nextParallelQue != RNIL) {
    jam();
    mlpqOperPtr.p->lockMode = operationRecPtr.p->lockMode;
    mlpqOperPtr.i = mlpqOperPtr.p->nextParallelQue;
    ptrCheckGuard(mlpqOperPtr, coprecsize, operationrec);
  }//if
  mlpqOperPtr.p->lockMode = operationRecPtr.p->lockMode;
}//Dbacc::moveLastParallelQueueWrite()

/* --------------------------------------------------------------------------------- */
/* PLACE_WRITE_IN_LOCK_QUEUE                                                         */
/*	INPUT:		OPERATION_REC_PTR	OUR OPERATION POINTER		    */
/*			QUE_OPER_PTR		LOCK QUEUE OWNER OPERATION POINTER  */
/*			PWI_PAGEPTR             PAGE POINTER OF ELEMENT             */
/*			TPWI_ELEMENTPTR         ELEMENT POINTER OF ELEMENT          */
/*	OUTPUT		TRESULT =                                                   */
/*			ZPARALLEL_QUEUE		OPERATION PLACED IN PARALLEL QUEUE  */
/*						OPERATION CAN PROCEED NOW.          */
/*			ZSERIAL_QUEUE		OPERATION PLACED IN SERIAL QUEUE    */
/*			ERROR CODE		OPERATION NEEDS ABORTING            */
/* --------------------------------------------------------------------------------- */
Uint32 Dbacc::placeWriteInLockQueue(Signal* signal) 
{
  tgnptMainOpPtr = queOperPtr;
  getNoParallelTransaction(signal);
  if (!((tgnptNrTransaction == 1) &&
	(queOperPtr.p->transId1 == operationRecPtr.p->transId1) &&
	(queOperPtr.p->transId2 == operationRecPtr.p->transId2))) {
    jam();
    placeSerialQueueWrite(signal);
    return ZSERIAL_QUEUE;
  }//if
  
  /* 
    WE ARE PERFORMING AN READ EXCLUSIVE, INSERT, UPDATE OR DELETE IN THE SAME
    TRANSACTION WHERE WE PREVIOUSLY HAVE EXECUTED AN OPERATION.
    Read-All, Update-All, Insert-All and Delete-Insert are allowed
    combinations.
    Delete-Read, Delete-Update and Delete-Delete are not an allowed
    combination and will result in tuple not found error.
  */
  mlpqOperPtr = queOperPtr;
  moveLastParallelQueueWrite(signal);

  if (operationRecPtr.p->operation == ZINSERT && 
      mlpqOperPtr.p->operation != ZDELETE){
    jam();
    return ZWRITE_ERROR;
  }//if

  operationRecPtr.p->localdata[0] = queOperPtr.p->localdata[0];
  operationRecPtr.p->localdata[1] = queOperPtr.p->localdata[1];
  operationRecPtr.p->prevParallelQue = mlpqOperPtr.i;
  mlpqOperPtr.p->nextParallelQue = operationRecPtr.i;
  return ZPARALLEL_QUEUE;
}//Dbacc::placeWriteInLockQueue()

/* --------------------------------------------------------------------------------- */
/*       WE HAVE TO PLACE IT SOMEWHERE IN THE SERIAL QUEUE INSTEAD.                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::placeSerialQueueWrite(Signal* signal) 
{
  readWriteOpPtr = queOperPtr;
 PSQW_LOOP:
  if (readWriteOpPtr.p->nextSerialQue == RNIL) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /* WE COULD NOT PUT IN ANY PARALLEL QUEUE. WE MUST PUT IT LAST IN THE SERIAL QUEUE.  */
    /* --------------------------------------------------------------------------------- */
    readWriteOpPtr.p->nextSerialQue = operationRecPtr.i;
    operationRecPtr.p->prevSerialQue = readWriteOpPtr.i;
    putOpInFragWaitQue(signal);
    return;
  }//if
  readWriteOpPtr.i = readWriteOpPtr.p->nextSerialQue;
  ptrCheckGuard(readWriteOpPtr, coprecsize, operationrec);
  tgnptMainOpPtr = readWriteOpPtr;
  getNoParallelTransaction(signal);
  if (tgnptNrTransaction == 1) {
    /* --------------------------------------------------------------------------------- */
    /* THERE WAS ONLY ONE TRANSACTION INVOLVED IN THE PARALLEL QUEUE. IF THIS IS OUR     */
    /* TRANSACTION WE CAN STILL GET HOLD OF THE LOCK.                                    */
    /* --------------------------------------------------------------------------------- */
    if ((readWriteOpPtr.p->transId1 == operationRecPtr.p->transId1) && 
        (readWriteOpPtr.p->transId2 == operationRecPtr.p->transId2)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /* WE ARE PERFORMING AN UPDATE OR DELETE IN THE SAME TRANSACTION WHERE WE ALREADY    */
      /* PREVIOUSLY HAVE EXECUTED AN OPERATION. INSERT-DELETE, READ-UPDATE, READ-READ,     */
      /* UPDATE-UPDATE, UPDATE-DELETE, READ-DELETE, INSERT-READ, INSERT-UPDATE ARE ALLOWED */
      /* COMBINATIONS. A NEW INSERT AFTER A DELETE IS NOT ALLOWED AND SUCH AN INSERT WILL  */
      /* GO TO THE SERIAL LOCK QUEUE WHICH IT WILL NOT LEAVE UNTIL A TIME-OUT AND THE      */
      /* TRANSACTION IS ABORTED. READS AND UPDATES AFTER DELETES IS ALSO NOT ALLOWED.      */
      /* --------------------------------------------------------------------------------- */
      mlpqOperPtr = readWriteOpPtr;
      moveLastParallelQueueWrite(signal);
      readWriteOpPtr = mlpqOperPtr;
      operationRecPtr.p->prevParallelQue = readWriteOpPtr.i;
      readWriteOpPtr.p->nextParallelQue = operationRecPtr.i;
      operationRecPtr.p->localdata[0] = readWriteOpPtr.p->localdata[0];
      operationRecPtr.p->localdata[1] = readWriteOpPtr.p->localdata[1];
      putOpInFragWaitQue(signal);
      return;
    }//if
  }//if
  goto PSQW_LOOP;
}//Dbacc::placeSerialQueueWrite()

/* ------------------------------------------------------------------------- */
/* ACC KEYREQ END                                                            */
/* ------------------------------------------------------------------------- */
void Dbacc::acckeyref1Lab(Signal* signal, Uint32 result_code) 
{
  if (operationRecPtr.p->keyinfoPage != RNIL) {
    jam();
    rpPageptr.i = operationRecPtr.p->keyinfoPage;
    ptrCheckGuard(rpPageptr, cpagesize, page8);
    releasePage(signal);
    operationRecPtr.p->keyinfoPage = RNIL;
  }//if
  operationRecPtr.p->transactionstate = WAIT_COMMIT_ABORT;
  /* ************************<< */
  /* ACCKEYREF                  */
  /* ************************<< */
  signal->theData[0] = cminusOne;
  signal->theData[1] = result_code;
  return;
}//Dbacc::acckeyref1Lab()

/* ******************--------------------------------------------------------------- */
/* ACCMINUPDATE                                      UPDATE LOCAL KEY REQ            */
/*  DESCRIPTION: UPDATES LOCAL KEY OF AN ELEMENTS IN THE HASH TABLE                  */
/*               THIS SIGNAL IS WAITED AFTER ANY INSERT REQ                          */
/*          ENTER ACCMINUPDATE WITH                    SENDER: LQH,    LEVEL B       */
/*                    OPERATION_REC_PTR,               OPERATION RECORD PTR          */
/*                    CLOCALKEY(0),                    LOCAL KEY 1                   */
/*                    CLOCALKEY(1)                     LOCAL KEY 2                   */
/* ******************--------------------------------------------------------------- */
void Dbacc::execACCMINUPDATE(Signal* signal) 
{
  Page8Ptr ulkPageidptr;
  Uint32 tulkLocalPtr;
  Uint32 tlocalkey1, tlocalkey2;
  Uint32 TlogStart;

  jamEntry();
  operationRecPtr.i = signal->theData[0];
  tlocalkey1 = signal->theData[1];
  tlocalkey2 = signal->theData[2];
  ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
  if (operationRecPtr.p->transactionstate == ACTIVE) {
    fragrecptr.i = operationRecPtr.p->fragptr;
    ulkPageidptr.i = operationRecPtr.p->elementPage;
    tulkLocalPtr = operationRecPtr.p->elementPointer + operationRecPtr.p->elementIsforward;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    ptrCheckGuard(ulkPageidptr, cpagesize, page8);
    if (fragrecptr.p->createLcp == ZTRUE) {
      //----------------------------------------------------------
      // To avoid undo log the element header we take care to only
      // undo log the local key part.
      //----------------------------------------------------------
      if (operationRecPtr.p->elementIsforward == 1) {
        jam();
        TlogStart = tulkLocalPtr;
      } else {
        jam();
        TlogStart = tulkLocalPtr - fragrecptr.p->localkeylen + 1;
      }//if
      datapageptr.p = ulkPageidptr.p;
      cundoinfolength = fragrecptr.p->localkeylen;
      cundoElemIndex = TlogStart;
      undoWritingProcess(signal);
    }//if
    dbgWord32(ulkPageidptr, tulkLocalPtr, tlocalkey1);
    arrGuard(tulkLocalPtr, 2048);
    ulkPageidptr.p->word32[tulkLocalPtr] = tlocalkey1;
    operationRecPtr.p->localdata[0] = tlocalkey1;
    if (fragrecptr.p->localkeylen == 1) {
      return;
    } else if (fragrecptr.p->localkeylen == 2) {
      jam();
      tulkLocalPtr = tulkLocalPtr + operationRecPtr.p->elementIsforward;
      operationRecPtr.p->localdata[1] = tlocalkey2;
      dbgWord32(ulkPageidptr, tulkLocalPtr, tlocalkey2);
      arrGuard(tulkLocalPtr, 2048);
      ulkPageidptr.p->word32[tulkLocalPtr] = tlocalkey2;
      return;
    } else {
      jam();
    }//if
  }//if
  ndbrequire(false);
}//Dbacc::execACCMINUPDATE()

/* ******************--------------------------------------------------------------- */
/* ACC_COMMITREQ                                        COMMIT  TRANSACTION          */
/*                                                     SENDER: LQH,    LEVEL B       */
/*       INPUT:  OPERATION_REC_PTR ,                                                 */
/* ******************--------------------------------------------------------------- */
void Dbacc::execACC_COMMITREQ(Signal* signal) 
{
  Uint8 Toperation;
  jamEntry();
  operationRecPtr.i = signal->theData[0];
  ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
  ndbrequire(operationRecPtr.p->transactionstate == ACTIVE);
  fragrecptr.i = operationRecPtr.p->fragptr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  commitOperation(signal);
  Toperation = operationRecPtr.p->operation;
  operationRecPtr.p->transactionstate = IDLE;
  operationRecPtr.p->operation = ZUNDEFINED_OP;
  if (Toperation != ZINSERT) {
    if (Toperation != ZDELETE) {
      return;
    } else {
      jam();
      rootfragrecptr.i = fragrecptr.p->myroot;
      ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
      rootfragrecptr.p->noOfElements--;
      fragrecptr.p->slack += operationRecPtr.p->insertDeleteLen;
      if (fragrecptr.p->slack > fragrecptr.p->slackCheck) {           /* TIME FOR JOIN BUCKETS PROCESS */
        if (fragrecptr.p->expandCounter > 0) {
          if (fragrecptr.p->expandFlag == 0) {
            jam();
            fragrecptr.p->expandFlag = 1;
            signal->theData[0] = fragrecptr.i;
            signal->theData[1] = fragrecptr.p->p;
            signal->theData[2] = fragrecptr.p->maxp;
            sendSignal(cownBlockref, GSN_SHRINKCHECK2, signal, 3, JBB);
          }//if
        }//if
      }//if
    }//if
  } else {
    jam();                                                /* EXPAND PROCESS HANDLING */
    rootfragrecptr.i = fragrecptr.p->myroot;
    ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
    rootfragrecptr.p->noOfElements++;
    fragrecptr.p->slack -= operationRecPtr.p->insertDeleteLen;
    if (fragrecptr.p->slack >= (Uint32)(1 << 31)) { /* IT MEANS THAT IF SLACK < ZERO */
      if (fragrecptr.p->expandFlag == 0) {
        jam();
        fragrecptr.p->expandFlag = 1;
        signal->theData[0] = fragrecptr.i;
        signal->theData[1] = fragrecptr.p->p;
        signal->theData[2] = fragrecptr.p->maxp;
        sendSignal(cownBlockref, GSN_EXPANDCHECK2, signal, 3, JBB);
      }//if
    }//if
  }//if
  return;
}//Dbacc::execACC_COMMITREQ()

/* ******************--------------------------------------------------------------- */
/* ACC ABORT REQ                           ABORT ALL OPERATION OF THE TRANSACTION    */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
/* ******************--------------------------------------------------------------- */
/* ACC ABORT REQ                                                 ABORT TRANSACTION   */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACC_ABORTREQ(Signal* signal) 
{
  jamEntry();
  accAbortReqLab(signal, true);
}//Dbacc::execACC_ABORTREQ()

void Dbacc::accAbortReqLab(Signal* signal, bool sendConf)
{
  operationRecPtr.i = signal->theData[0];
  ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
  tresult = 0;	/*                ZFALSE           */
  if ((operationRecPtr.p->transactionstate == ACTIVE) ||
      (operationRecPtr.p->transactionstate == WAIT_COMMIT_ABORT)) {
    jam();
    fragrecptr.i = operationRecPtr.p->fragptr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    operationRecPtr.p->transactionstate = ABORT;
    abortOperation(signal);
  } else {
    ndbrequire(operationRecPtr.p->transactionstate == IDLE);
    jam();
  }//if
  operationRecPtr.p->transactionstate = IDLE;
  operationRecPtr.p->operation = ZUNDEFINED_OP;
  if (! sendConf)
    return;
  signal->theData[0] = operationRecPtr.p->userptr;
  sendSignal(operationRecPtr.p->userblockref, GSN_ACC_ABORTCONF, signal, 1, JBB);
  return;
}//Dbacc::accAbortReqLab()

/*
 * Lock or unlock tuple.
 */
void Dbacc::execACC_LOCKREQ(Signal* signal)
{
  jamEntry();
  AccLockReq* sig = (AccLockReq*)signal->getDataPtrSend();
  AccLockReq reqCopy = *sig;
  AccLockReq* const req = &reqCopy;
  Uint32 lockOp = (req->requestInfo & 0xFF);
  if (lockOp == AccLockReq::LockShared ||
      lockOp == AccLockReq::LockExclusive) {
    jam();
    // find table
    tabptr.i = req->tableId;
    ptrCheckGuard(tabptr, ctablesize, tabrec);
    // find fragment (TUX will know it)
    if (req->fragPtrI == RNIL) {
      for (Uint32 i = 0; i < NO_OF_FRAG_PER_NODE; i++) {
        jam();
        if (tabptr.p->fragptrholder[i] != RNIL) {
          rootfragrecptr.i = tabptr.p->fragptrholder[i];
          ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
          if (rootfragrecptr.p->fragmentid[0] == req->fragId) {
            jam();
            req->fragPtrI = rootfragrecptr.p->fragmentptr[0];
            break;
          }
          if (rootfragrecptr.p->fragmentid[1] == req->fragId) {
            jam();
            req->fragPtrI = rootfragrecptr.p->fragmentptr[1];
            break;
          }
        }
      }
    }
    fragrecptr.i = req->fragPtrI;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
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    ndbrequire(req->fragId == fragrecptr.p->myfid);
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    // caller must be explicit here
    ndbrequire(req->accOpPtr == RNIL);
    // seize operation to hold the lock
    if (cfreeopRec != RNIL) {
      jam();
      seizeOpRec(signal);
      // init as in ACCSEIZEREQ
      operationRecPtr.p->userptr = req->userPtr;
      operationRecPtr.p->userblockref = req->userRef;
      operationRecPtr.p->operation = ZUNDEFINED_OP;
      operationRecPtr.p->transactionstate = IDLE;
      // do read with lock via ACCKEYREQ
      Uint32 lockMode = (lockOp == AccLockReq::LockShared) ? 0 : 1;
      Uint32 opCode = ZSCAN_OP;
      signal->theData[0] = operationRecPtr.i;
      signal->theData[1] = fragrecptr.i;
      signal->theData[2] = opCode | (lockMode << 4) | (1 << 31);
      signal->theData[3] = req->hashValue;
      signal->theData[4] = 1;   // fake primKeyLen
      signal->theData[5] = req->transId1;
      signal->theData[6] = req->transId2;
      signal->theData[7] = req->tupAddr;
      EXECUTE_DIRECT(DBACC, GSN_ACCKEYREQ, signal, 8);
      // translate the result
      if (signal->theData[0] < RNIL) {
        jam();
        req->returnCode = AccLockReq::Success;
        req->accOpPtr = operationRecPtr.i;
      } else if (signal->theData[0] == RNIL) {
        jam();
        req->returnCode = AccLockReq::IsBlocked;
        req->accOpPtr = operationRecPtr.i;
      } else {
        ndbrequire(signal->theData[0] == (UintR)-1);
        releaseOpRec(signal);
        req->returnCode = AccLockReq::Refused;
        req->accOpPtr = RNIL;
      }
    } else {
      jam();
      req->returnCode = AccLockReq::NoFreeOp;
    }
    *sig = *req;
    return;
  }
  if (lockOp == AccLockReq::Unlock) {
    jam();
    // do unlock via ACC_COMMITREQ (immediate)
    signal->theData[0] = req->accOpPtr;
    EXECUTE_DIRECT(DBACC, GSN_ACC_COMMITREQ, signal, 1);
    releaseOpRec(signal);
    req->returnCode = AccLockReq::Success;
    *sig = *req;
    return;
  }
  if (lockOp == AccLockReq::Abort) {
    jam();
    // do abort via ACC_ABORTREQ (immediate)
    signal->theData[0] = req->accOpPtr;
    accAbortReqLab(signal, false);
    releaseOpRec(signal);
    req->returnCode = AccLockReq::Success;
    *sig = *req;
    return;
  }
  if (lockOp == AccLockReq::AbortWithConf) {
    jam();
    // do abort via ACC_ABORTREQ (with conf signal)
    signal->theData[0] = req->accOpPtr;
    accAbortReqLab(signal, true);
    releaseOpRec(signal);
    req->returnCode = AccLockReq::Success;
    *sig = *req;
    return;
  }
  ndbrequire(false);
}

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF EXECUTE OPERATION MODULE                                             */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       MODULE:         INSERT                                                      */
/*               THE FOLLOWING SUBROUTINES ARE ONLY USED BY INSERT_ELEMENT. THIS     */
/*               ROUTINE IS THE SOLE INTERFACE TO INSERT ELEMENTS INTO THE INDEX.    */
/*               CURRENT USERS ARE INSERT REQUESTS, EXPAND CONTAINER AND SHRINK      */
/*               CONTAINER.                                                          */
/*                                                                                   */
/*               THE FOLLOWING SUBROUTINES ARE INCLUDED IN THIS MODULE:              */
/*               INSERT_ELEMENT                                                      */
/*               INSERT_CONTAINER                                                    */
/*               ADDNEWCONTAINER                                                     */
/*               GETFREELIST                                                         */
/*               INCREASELISTCONT                                                    */
/*               SEIZE_LEFTLIST                                                      */
/*               SEIZE_RIGHTLIST                                                     */
/*                                                                                   */
/*               THESE ROUTINES ARE ONLY USED BY THIS MODULE AND BY NO ONE ELSE.     */
/*               ALSO THE ROUTINES MAKE NO USE OF ROUTINES IN OTHER MODULES.         */
/*               TAKE_REC_OUT_OF_FREE_OVERPAGE AND RELEASE_OVERFLOW_REC ARE          */
/*               EXCEPTIONS TO THIS RULE.                                            */
/*                                                                                   */
/*               THE ONLY SHORT-LIVED VARIABLES USED IN OTHER PARTS OF THE BLOCK ARE */
/*               THOSE DEFINED AS INPUT AND OUTPUT IN INSERT_ELEMENT                 */
/*               SHORT-LIVED VARIABLES INCLUDE TEMPORARY VARIABLES, COMMON VARIABLES */
/*               AND POINTER VARIABLES.                                              */
/*               THE ONLY EXCEPTION TO THIS RULE IS FRAGRECPTR WHICH POINTS TO THE   */
/*               FRAGMENT RECORD. THIS IS MORE LESS STATIC ALWAYS DURING A SIGNAL    */
/*               EXECUTION.                                                          */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* INSERT_ELEMENT                                                                    */
/*       INPUT:                                                                      */
/*               IDR_PAGEPTR (POINTER TO THE ACTIVE PAGE REC)                        */
/*               TIDR_PAGEINDEX (INDEX OF THE CONTAINER)                             */
/*               TIDR_FORWARD (DIRECTION FORWARD OR BACKWARD)                        */
/*               TIDR_ELEMHEAD (HEADER OF ELEMENT TO BE INSERTED                     */
/*               CIDR_KEYS(ARRAY OF TUPLE KEYS)                                      */
/*               CLOCALKEY(ARRAY OF LOCAL KEYS).                                     */
/*               FRAGRECPTR                                                          */
/*               IDR_OPERATION_REC_PTR                                               */
/*               TIDR_KEY_LEN                                                        */
/*                                                                                   */
/*       OUTPUT:                                                                     */
/*               TIDR_PAGEINDEX (PAGE INDEX OF INSERTED ELEMENT)                     */
/*               IDR_PAGEPTR    (PAGE POINTER OF INSERTED ELEMENT)                   */
/*               TIDR_FORWARD   (CONTAINER DIRECTION OF INSERTED ELEMENT)            */
/*               NONE                                                                */
/* --------------------------------------------------------------------------------- */
void Dbacc::insertElement(Signal* signal) 
{
  DirRangePtr inrOverflowrangeptr;
  DirectoryarrayPtr inrOverflowDirptr;
  OverflowRecordPtr inrOverflowRecPtr;
  Page8Ptr inrNewPageptr;
  Uint32 tinrNextSamePage;
  Uint32 tinrTmp;

  do {
    insertContainer(signal);
    if (tidrResult != ZFALSE) {
      jam();
      return;
      /* INSERTION IS DONE, OR */
      /* AN ERROR IS DETECTED  */
    }//if
    if (((tidrContainerhead >> 7) & 0x3) != 0) {
      tinrNextSamePage = (tidrContainerhead >> 9) & 0x1;	/* CHECK BIT FOR CHECKING WHERE */
      /* THE NEXT CONTAINER IS IN THE SAME PAGE */
      tidrPageindex = tidrContainerhead & 0x7f;	/* NEXT CONTAINER PAGE INDEX 7 BITS */
      if (((tidrContainerhead >> 7) & 3) == ZLEFT) {
        jam();
        tidrForward = ZTRUE;
      } else if (((tidrContainerhead >> 7) & 3) == ZRIGHT) {
        jam();
        tidrForward = cminusOne;
      } else {
        ndbrequire(false);
        return;
      }//if
      if (tinrNextSamePage == ZFALSE) {
        jam();     /* NEXT CONTAINER IS IN AN OVERFLOW PAGE */
        tinrTmp = idrPageptr.p->word32[tidrContainerptr + 1];
        inrOverflowrangeptr.i = fragrecptr.p->overflowdir;
        ptrCheckGuard(inrOverflowrangeptr, cdirrangesize, dirRange);
        arrGuard((tinrTmp >> 8), 256);
        inrOverflowDirptr.i = inrOverflowrangeptr.p->dirArray[tinrTmp >> 8];
        ptrCheckGuard(inrOverflowDirptr, cdirarraysize, directoryarray);
        idrPageptr.i = inrOverflowDirptr.p->pagep[tinrTmp & 0xff];
        ptrCheckGuard(idrPageptr, cpagesize, page8);
      }//if
      ndbrequire(tidrPageindex < ZEMPTYLIST);
    } else {
      break;
    }//if
  } while (1);
  gflPageptr.p = idrPageptr.p;
  getfreelist(signal);
  if (tgflPageindex == ZEMPTYLIST) {
    jam();
    /* NO FREE BUFFER IS FOUND */
    if (fragrecptr.p->firstOverflowRec == RNIL) {
      jam();
      allocOverflowPage(signal);
      ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    }//if
    inrOverflowRecPtr.i = fragrecptr.p->firstOverflowRec;
    ptrCheckGuard(inrOverflowRecPtr, coverflowrecsize, overflowRecord);
    inrNewPageptr.i = inrOverflowRecPtr.p->overpage;
    ptrCheckGuard(inrNewPageptr, cpagesize, page8);
    gflPageptr.p = inrNewPageptr.p;
    getfreelist(signal);
    ndbrequire(tgflPageindex != ZEMPTYLIST);
    tancNext = 0;
  } else {
    jam();
    inrNewPageptr = idrPageptr;
    tancNext = 1;
  }//if
  tslUpdateHeader = ZTRUE;
  tslPageindex = tgflPageindex;
  slPageptr.p = inrNewPageptr.p;
  if (tgflBufType == ZLEFT) {
    seizeLeftlist(signal);
    tidrForward = ZTRUE;
  } else {
    seizeRightlist(signal);
    tidrForward = cminusOne;
  }//if
  tancPageindex = tgflPageindex;
  tancPageid = inrNewPageptr.p->word32[ZPOS_PAGE_ID];
  tancBufType = tgflBufType;
  tancContainerptr = tidrContainerptr;
  ancPageptr.p = idrPageptr.p;
  addnewcontainer(signal);

  idrPageptr = inrNewPageptr;
  tidrPageindex = tgflPageindex;
  insertContainer(signal);
  ndbrequire(tidrResult == ZTRUE);
}//Dbacc::insertElement()

/* --------------------------------------------------------------------------------- */
/* INSERT_CONTAINER                                                                  */
/*           INPUT:                                                                  */
/*               IDR_PAGEPTR (POINTER TO THE ACTIVE PAGE REC)                        */
/*               TIDR_PAGEINDEX (INDEX OF THE CONTAINER)                             */
/*               TIDR_FORWARD (DIRECTION FORWARD OR BACKWARD)                        */
/*               TIDR_ELEMHEAD (HEADER OF ELEMENT TO BE INSERTED                     */
/*               CKEYS(ARRAY OF TUPLE KEYS)                                          */
/*               CLOCALKEY(ARRAY 0F LOCAL KEYS).                                     */
/*               TIDR_KEY_LEN                                                        */
/*               FRAGRECPTR                                                          */
/*               IDR_OPERATION_REC_PTR                                               */
/*           OUTPUT:                                                                 */
/*               TIDR_RESULT (ZTRUE FOR SUCCESS AND ZFALSE OTHERWISE)                */
/*               TIDR_CONTAINERHEAD (HEADER OF CONTAINER)                            */
/*               TIDR_CONTAINERPTR (POINTER TO CONTAINER HEADER)                     */
/*                                                                                   */
/*           DESCRIPTION:                                                            */
/*               THE FREE AREA OF THE CONTAINER WILL BE CALCULATED. IF IT IS         */
/*               LARGER THAN OR EQUAL THE ELEMENT LENGTH. THE ELEMENT WILL BE        */
/*               INSERT IN THE CONTAINER AND CONTAINER HEAD WILL BE UPDATED.         */
/*               THIS ROUTINE ALWAYS DEALS WITH ONLY ONE CONTAINER AND DO NEVER      */
/*               START ANYTHING OUTSIDE OF THIS CONTAINER.                           */
/*                                                                                   */
/*       SHORT FORM: IDR                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::insertContainer(Signal* signal) 
{
  Uint32 tidrContainerlen;
  Uint32 tidrConfreelen;
  Uint32 tidrNextSide;
  Uint32 tidrNextConLen;
  Uint32 tidrIndex;
  Uint32 tidrInputIndex;
  Uint32 tidrContLen;
  Uint32 guard26;

  tidrResult = ZFALSE;
  tidrContainerptr = (tidrPageindex << ZSHIFT_PLUS) - (tidrPageindex << ZSHIFT_MINUS);
  tidrContainerptr = tidrContainerptr + ZHEAD_SIZE;
  /* --------------------------------------------------------------------------------- */
  /*       CALCULATE THE POINTER TO THE ELEMENT TO BE INSERTED AND THE POINTER TO THE  */
  /*       CONTAINER HEADER OF THE OTHER SIDE OF THE BUFFER.                           */
  /* --------------------------------------------------------------------------------- */
  if (tidrForward == ZTRUE) {
    jam();
    tidrNextSide = tidrContainerptr + (ZBUF_SIZE - ZCON_HEAD_SIZE);
    arrGuard(tidrNextSide + 1, 2048);
    tidrContainerhead = idrPageptr.p->word32[tidrContainerptr];
    tidrContainerlen = tidrContainerhead >> 26;
    tidrIndex = tidrContainerptr + tidrContainerlen;
  } else {
    jam();
    tidrNextSide = tidrContainerptr;
    tidrContainerptr = tidrContainerptr + (ZBUF_SIZE - ZCON_HEAD_SIZE);
    arrGuard(tidrContainerptr + 1, 2048);
    tidrContainerhead = idrPageptr.p->word32[tidrContainerptr];
    tidrContainerlen = tidrContainerhead >> 26;
    tidrIndex = (tidrContainerptr - tidrContainerlen) + (ZCON_HEAD_SIZE - 1);
  }//if
  if (tidrContainerlen > (ZBUF_SIZE - 3)) {
    return;
  }//if
  tidrConfreelen = ZBUF_SIZE - tidrContainerlen;
  /* --------------------------------------------------------------------------------- */
  /*       WE CALCULATE THE TOTAL LENGTH THE CONTAINER CAN EXPAND TO                   */
  /*       THIS INCLUDES THE OTHER SIDE OF THE BUFFER IF POSSIBLE TO EXPAND THERE.     */
  /* --------------------------------------------------------------------------------- */
  if (((tidrContainerhead >> 10) & 1) == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       WE HAVE NOT EXPANDED TO THE ENTIRE BUFFER YET. WE CAN THUS READ THE OTHER   */
    /*       SIDE'S CONTAINER HEADER TO READ HIS LENGTH.                                 */
    /* --------------------------------------------------------------------------------- */
    tidrNextConLen = idrPageptr.p->word32[tidrNextSide] >> 26;
    tidrConfreelen = tidrConfreelen - tidrNextConLen;
    if (tidrConfreelen > ZBUF_SIZE) {
      ndbrequire(false);
      /* --------------------------------------------------------------------------------- */
      /*       THE BUFFERS ARE PLACED ON TOP OF EACH OTHER. THIS SHOULD NEVER OCCUR.       */
      /* --------------------------------------------------------------------------------- */
      return;
    }//if
  } else {
    jam();
    tidrNextConLen = 1;	/* INDICATE OTHER SIDE IS NOT PART OF FREE LIST */
  }//if
  if (tidrConfreelen < fragrecptr.p->elementLength) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THE CONTAINER COULD NOT BE EXPANDED TO FIT THE NEW ELEMENT. WE HAVE TO      */
    /*       RETURN AND FIND A NEW CONTAINER TO INSERT IT INTO.                          */
    /* --------------------------------------------------------------------------------- */
    return;
  }//if
  tidrContainerlen = tidrContainerlen + fragrecptr.p->elementLength;
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = idrPageptr.p;
    cundoElemIndex = tidrContainerptr;
    cundoinfolength = 1;
    undoWritingProcess(signal);
  }//if
  if (tidrNextConLen == 0) {
    /* EACH SIDE OF THE BUFFER WHICH BELONG TO A FREE */
    /* LIST, HAS ZERO AS LENGTH. */
    if (tidrContainerlen > ZUP_LIMIT) {
      dbgWord32(idrPageptr, tidrContainerptr, idrPageptr.p->word32[tidrContainerptr] | (1 << 10));
      idrPageptr.p->word32[tidrContainerptr] = idrPageptr.p->word32[tidrContainerptr] | (1 << 10);
      tslUpdateHeader = ZFALSE;
      tslPageindex = tidrPageindex;
      slPageptr.p = idrPageptr.p;
      if (tidrForward == ZTRUE) {
        jam();
        seizeRightlist(signal);	/* REMOVE THE RIGHT SIDE OF THE BUFFER FROM THE LIST */
      } else {
        jam();
	/* OF THE FREE CONTAINERS */
        seizeLeftlist(signal);	/* REMOVE THE LEFT SIDE OF THE BUFFER FROM THE LIST */
      }//if
    }//if
  }//if
  /* OF THE FREE CONTAINERS */
  /* --------------------------------------------------------------------------------- */
  /*       WE HAVE NOW FOUND A FREE SPOT IN THE CURRENT CONTAINER. WE INSERT THE       */
  /*       ELEMENT HERE. THE ELEMENT CONTAINS A HEADER, A LOCAL KEY AND A TUPLE KEY.   */
  /*       BEFORE INSERTING THE ELEMENT WE WILL UPDATE THE OPERATION RECORD WITH THE   */
  /*       DATA CONCERNING WHERE WE INSERTED THE ELEMENT. THIS MAKES IT EASY TO FIND   */
  /*       THIS INFORMATION WHEN WE RETURN TO UPDATE THE LOCAL KEY OR RETURN TO COMMIT */
  /*       OR ABORT THE INSERT. IF NO OPERATION RECORD EXIST IT MEANS THAT WE ARE      */
  /*       PERFORMING THIS AS A PART OF THE EXPAND OR SHRINK PROCESS.                  */
  /* --------------------------------------------------------------------------------- */
  if (idrOperationRecPtr.i != RNIL) {
    jam();
    idrOperationRecPtr.p->elementIsforward = tidrForward;
    idrOperationRecPtr.p->elementPage = idrPageptr.i;
    idrOperationRecPtr.p->elementContainer = tidrContainerptr;
    idrOperationRecPtr.p->elementPointer = tidrIndex;
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       WE CHOOSE TO UNDO LOG INSERTS BY WRITING THE BEFORE VALUE TO THE UNDO LOG.  */
  /*       WE COULD ALSO HAVE DONE THIS BY WRITING THIS BEFORE VALUE WHEN DELETING     */
  /*       ELEMENTS. WE CHOOSE TO PUT IT HERE SINCE WE THEREBY ENSURE THAT WE ALWAYS   */
  /*       UNDO LOG ALL WRITES TO PAGE MEMORY. IT SHOULD BE EASIER TO MAINTAIN SUCH A  */
  /*       STRUCTURE. IT IS RATHER DIFFICULT TO MAINTAIN A LOGICAL STRUCTURE WHERE     */
  /*       DELETES ARE INSERTS AND INSERTS ARE PURELY DELETES.                         */
  /* --------------------------------------------------------------------------------- */
  if (fragrecptr.p->createLcp == ZTRUE) {
    if (tidrForward == ZTRUE) {
      cundoElemIndex = tidrIndex;
    } else {
      cundoElemIndex = (tidrIndex + 1) - fragrecptr.p->elementLength;
    }//if
    cundoinfolength = fragrecptr.p->elementLength;
    undoWritingProcess(signal);
  }//if
  dbgWord32(idrPageptr, tidrIndex, tidrElemhead);
  idrPageptr.p->word32[tidrIndex] = tidrElemhead;	/* INSERTS THE HEAD OF THE ELEMENT */
  tidrIndex += tidrForward;
  guard26 = fragrecptr.p->localkeylen - 1;
  arrGuard(guard26, 2);
  for (tidrInputIndex = 0; tidrInputIndex <= guard26; tidrInputIndex++) {
    dbgWord32(idrPageptr, tidrIndex, clocalkey[tidrInputIndex]);
    arrGuard(tidrIndex, 2048);
    idrPageptr.p->word32[tidrIndex] = clocalkey[tidrInputIndex];	/* INSERTS LOCALKEY */
    tidrIndex += tidrForward;
  }//for
  guard26 = tidrKeyLen - 1;
  arrGuard(guard26, 8);
  for (tidrInputIndex = 0; tidrInputIndex <= guard26; tidrInputIndex++) {
    dbgWord32(idrPageptr, tidrIndex, ckeys[tidrInputIndex]);
    arrGuard(tidrIndex, 2048);
    idrPageptr.p->word32[tidrIndex] = ckeys[tidrInputIndex];	/* INSERTS TUPLE KEY */
    tidrIndex += tidrForward;
  }//for
  tidrContLen = idrPageptr.p->word32[tidrContainerptr] << 6;
  tidrContLen = tidrContLen >> 6;
  dbgWord32(idrPageptr, tidrContainerptr, (tidrContainerlen << 26) | tidrContLen);
  idrPageptr.p->word32[tidrContainerptr] = (tidrContainerlen << 26) | tidrContLen;
  tidrResult = ZTRUE;
}//Dbacc::insertContainer()

/* --------------------------------------------------------------------------------- */
/* ADDNEWCONTAINER                                                                   */
/*       INPUT:                                                                      */
/*               TANC_CONTAINERPTR                                                   */
/*               ANC_PAGEPTR                                                         */
/*               TANC_NEXT                                                           */
/*               TANC_PAGEINDEX                                                      */
/*               TANC_BUF_TYPE                                                       */
/*               TANC_PAGEID                                                         */
/*       OUTPUT:                                                                     */
/*               NONE                                                                */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::addnewcontainer(Signal* signal) 
{
  Uint32 tancTmp1;

  if (fragrecptr.p->createLcp == ZTRUE) {
    cundoElemIndex = tancContainerptr;
    datapageptr.p = ancPageptr.p;
    cundoinfolength = 2;
    undoWritingProcess(signal);	/* WHEN UNDO PROCESS HAS STARTED,  */
  }//if
  /* THE OLD DATA IS STORED ON AN UNDO PAGE */
  /* --------------------------------------------------------------------------------- */
  /*       KEEP LENGTH INFORMATION IN BIT 26-31.                                       */
  /*       SET BIT 9  INDICATING IF NEXT BUFFER IN THE SAME PAGE USING TANC_NEXT.      */
  /*       SET TYPE OF NEXT CONTAINER IN BIT 7-8.                                      */
  /*       SET PAGE INDEX OF NEXT CONTAINER IN BIT 0-6.                                */
  /*       KEEP INDICATOR OF OWNING OTHER SIDE OF BUFFER IN BIT 10.                    */
  /* --------------------------------------------------------------------------------- */
  tancTmp1 = ancPageptr.p->word32[tancContainerptr] >> 10;
  tancTmp1 = tancTmp1 << 1;
  tancTmp1 = tancTmp1 | tancNext;
  tancTmp1 = tancTmp1 << 2;
  tancTmp1 = tancTmp1 | tancBufType;	/* TYPE OF THE NEXT CONTAINER */
  tancTmp1 = tancTmp1 << 7;
  tancTmp1 = tancTmp1 | tancPageindex;
  dbgWord32(ancPageptr, tancContainerptr, tancTmp1);
  ancPageptr.p->word32[tancContainerptr] = tancTmp1;	/* HEAD OF THE CONTAINER IS UPDATED */
  dbgWord32(ancPageptr, tancContainerptr + 1, tancPageid);
  ancPageptr.p->word32[tancContainerptr + 1] = tancPageid;
}//Dbacc::addnewcontainer()

/* --------------------------------------------------------------------------------- */
/* GETFREELIST                                                                       */
/*         INPUT:                                                                    */
/*               GFL_PAGEPTR (POINTER TO A PAGE RECORD).                             */
/*         OUTPUT:                                                                   */
/*                TGFL_PAGEINDEX(POINTER TO A FREE BUFFER IN THE FREEPAGE), AND      */
/*                TGFL_BUF_TYPE( TYPE OF THE FREE BUFFER).                           */
/*         DESCRIPTION: SEARCHS IN THE FREE LIST OF THE FREE BUFFER IN THE PAGE HEAD */
/*                     (WORD32(1)),AND RETURN ADDRESS OF A FREE BUFFER OR NIL.       */
/*                     THE FREE BUFFER CAN BE A RIGHT CONTAINER OR A LEFT ONE        */
/*                     THE KIND OF THE CONTAINER IS NOTED BY TGFL_BUF_TYPE.          */
/* --------------------------------------------------------------------------------- */
void Dbacc::getfreelist(Signal* signal) 
{
  Uint32 tgflTmp;

  tgflTmp = gflPageptr.p->word32[ZPOS_EMPTY_LIST];
  tgflPageindex = (tgflTmp >> 7) & 0x7f;	/* LEFT FREE LIST */
  tgflBufType = ZLEFT;
  if (tgflPageindex == ZEMPTYLIST) {
    jam();
    tgflPageindex = tgflTmp & 0x7f;	/* RIGHT FREE LIST */
    tgflBufType = ZRIGHT;
  }//if
  ndbrequire(tgflPageindex <= ZEMPTYLIST);
}//Dbacc::getfreelist()

/* --------------------------------------------------------------------------------- */
/* INCREASELISTCONT                                                                  */
/*       INPUT:                                                                      */
/*               ILC_PAGEPTR     PAGE POINTER TO INCREASE NUMBER OF CONTAINERS IN    */
/*           A CONTAINER OF AN OVERFLOW PAGE (FREEPAGEPTR) IS ALLOCATED, NR OF       */
/*           ALLOCATED CONTAINER HAVE TO BE INCRESE BY ONE .                         */
/*           IF THE NUMBER OF ALLOCATED CONTAINERS IS ABOVE THE FREE LIMIT WE WILL   */
/*           REMOVE THE PAGE FROM THE FREE LIST.                                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::increaselistcont(Signal* signal) 
{
  OverflowRecordPtr ilcOverflowRecPtr;

  dbgWord32(ilcPageptr, ZPOS_ALLOC_CONTAINERS, ilcPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] + 1);
  ilcPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] = ilcPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] + 1;
  if (ilcPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] > ZFREE_LIMIT) {
    if (ilcPageptr.p->word32[ZPOS_OVERFLOWREC] != RNIL) {
      jam();
      ilcOverflowRecPtr.i = ilcPageptr.p->word32[ZPOS_OVERFLOWREC];
      dbgWord32(ilcPageptr, ZPOS_OVERFLOWREC, RNIL);
      ilcPageptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
      ptrCheckGuard(ilcOverflowRecPtr, coverflowrecsize, overflowRecord);
      tfoOverflowRecPtr = ilcOverflowRecPtr;
      takeRecOutOfFreeOverpage(signal);
      rorOverflowRecPtr = ilcOverflowRecPtr;
      releaseOverflowRec(signal);
    }//if
  }//if
}//Dbacc::increaselistcont()

/* --------------------------------------------------------------------------------- */
/* SEIZE_LEFTLIST                                                                    */
/*       INPUT:                                                                      */
/*               TSL_PAGEINDEX           PAGE INDEX OF CONTAINER TO SEIZE            */
/*               SL_PAGEPTR              PAGE POINTER OF CONTAINER TO SEIZE          */
/*               TSL_UPDATE_HEADER       SHOULD WE UPDATE THE CONTAINER HEADER       */
/*                                                                                   */
/*       OUTPUT:                                                                     */
/*               NONE                                                                */
/*         DESCRIPTION: THE BUFFER NOTED BY TSL_PAGEINDEX WILL BE REMOVED FROM THE   */
/*                      LIST OF LEFT FREE CONTAINER, IN THE HEADER OF THE PAGE       */
/*                      (FREEPAGEPTR). PREVIOUS AND NEXT BUFFER OF REMOVED BUFFER    */
/*                      WILL BE UPDATED.                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeLeftlist(Signal* signal) 
{
  Uint32 tsllTmp1;
  Uint32 tsllNewHead;
  Uint32 tsllHeadIndex;
  Uint32 tsllTmp;

  tsllHeadIndex = ((tslPageindex << ZSHIFT_PLUS) - (tslPageindex << ZSHIFT_MINUS)) + ZHEAD_SIZE;
  arrGuard(tsllHeadIndex + 1, 2048);
  tslNextfree = slPageptr.p->word32[tsllHeadIndex];
  tslPrevfree = slPageptr.p->word32[tsllHeadIndex + 1];
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = slPageptr.p;
    cundoElemIndex = tsllHeadIndex;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    cundoElemIndex = ZPOS_EMPTY_LIST;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (tslPrevfree == ZEMPTYLIST) {
    jam();
    /* UPDATE FREE LIST OF LEFT CONTAINER IN PAGE HEAD */
    tsllTmp1 = slPageptr.p->word32[ZPOS_EMPTY_LIST];
    tsllTmp = tsllTmp1 & 0x7f;
    tsllTmp1 = (tsllTmp1 >> 14) << 14;
    tsllTmp1 = (tsllTmp1 | (tslNextfree << 7)) | tsllTmp;
    dbgWord32(slPageptr, ZPOS_EMPTY_LIST, tsllTmp1);
    slPageptr.p->word32[ZPOS_EMPTY_LIST] = tsllTmp1;
  } else {
    ndbrequire(tslPrevfree < ZEMPTYLIST);
    jam();
    tsllTmp = ((tslPrevfree << ZSHIFT_PLUS) - (tslPrevfree << ZSHIFT_MINUS)) + ZHEAD_SIZE;
    if (fragrecptr.p->createLcp == ZTRUE) {
      cundoElemIndex = tsllTmp;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(slPageptr, tsllTmp, tslNextfree);
    slPageptr.p->word32[tsllTmp] = tslNextfree;
  }//if
  if (tslNextfree < ZEMPTYLIST) {
    jam();
    tsllTmp = (((tslNextfree << ZSHIFT_PLUS) - (tslNextfree << ZSHIFT_MINUS)) + ZHEAD_SIZE) + 1;
    if (fragrecptr.p->createLcp == ZTRUE) {
      cundoElemIndex = tsllTmp;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(slPageptr, tsllTmp, tslPrevfree);
    slPageptr.p->word32[tsllTmp] = tslPrevfree;
  } else {
    ndbrequire(tslNextfree == ZEMPTYLIST);
    jam();
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       IF WE ARE UPDATING THE HEADER WE ARE CREATING A NEW CONTAINER IN THE PAGE.  */
  /*       TO BE ABLE TO FIND ALL LOCKED ELEMENTS WE KEEP ALL CONTAINERS IN LINKED     */
  /*       LISTS IN THE PAGE.                                                          */
  /*                                                                                   */
  /*       ZPOS_EMPTY_LIST CONTAINS A NEXT POINTER IN BIT 16-22 THAT REFERS TO THE     */
  /*       FIRST CONTAINER IN A LIST OF USED RIGHT CONTAINERS IN THE PAGE.             */
  /*       ZPOS_EMPTY_LIST CONTAINS A NEXT POINTER IN BIT 23-29 THAT REFERS TO THE     */
  /*       FIRST CONTAINER IN A LIST OF USED LEFT CONTAINERS IN THE PAGE.              */
  /*       EACH CONTAINER IN THE LIST CONTAINS A NEXT POINTER IN BIT 11-17 AND IT      */
  /*       CONTAINS A PREVIOUS POINTER IN BIT 18-24.                                   */
  /*	WE ALSO SET BIT 25 TO INDICATE THAT IT IS A CONTAINER HEADER.               */
  /* --------------------------------------------------------------------------------- */
  if (tslUpdateHeader == ZTRUE) {
    jam();
    tslNextfree = (slPageptr.p->word32[ZPOS_EMPTY_LIST] >> 23) & 0x7f;
    tsllNewHead = ZCON_HEAD_SIZE;
    tsllNewHead = ((tsllNewHead << 8) + ZEMPTYLIST) + (1 << 7);
    tsllNewHead = (tsllNewHead << 7) + tslNextfree;
    tsllNewHead = tsllNewHead << 11;
    dbgWord32(slPageptr, tsllHeadIndex, tsllNewHead);
    slPageptr.p->word32[tsllHeadIndex] = tsllNewHead;
    tsllTmp = slPageptr.p->word32[ZPOS_EMPTY_LIST] & 0xc07fffff;
    tsllTmp = tsllTmp | (tslPageindex << 23);
    dbgWord32(slPageptr, ZPOS_EMPTY_LIST, tsllTmp);
    slPageptr.p->word32[ZPOS_EMPTY_LIST] = tsllTmp;
    if (tslNextfree < ZEMPTYLIST) {
      jam();
      tsllTmp = ((tslNextfree << ZSHIFT_PLUS) - (tslNextfree << ZSHIFT_MINUS)) + ZHEAD_SIZE;
      if (fragrecptr.p->createLcp == ZTRUE) {
        cundoElemIndex = tsllTmp;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      tsllTmp1 = slPageptr.p->word32[tsllTmp] & 0xfe03ffff;
      tsllTmp1 = tsllTmp1 | (tslPageindex << 18);
      dbgWord32(slPageptr, tsllTmp, tsllTmp1);
      slPageptr.p->word32[tsllTmp] = tsllTmp1;
    } else {
      ndbrequire(tslNextfree == ZEMPTYLIST);
      jam();
    }//if
  }//if
  ilcPageptr.p = slPageptr.p;
  increaselistcont(signal);
}//Dbacc::seizeLeftlist()

/* --------------------------------------------------------------------------------- */
/* SEIZE_RIGHTLIST                                                                   */
/*         DESCRIPTION: THE BUFFER NOTED BY TSL_PAGEINDEX WILL BE REMOVED FROM THE   */
/*                      LIST OF RIGHT FREE CONTAINER, IN THE HEADER OF THE PAGE      */
/*                      (SL_PAGEPTR). PREVIOUS AND NEXT BUFFER OF REMOVED BUFFER     */
/*                      WILL BE UPDATED.                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeRightlist(Signal* signal) 
{
  Uint32 tsrlTmp1;
  Uint32 tsrlNewHead;
  Uint32 tsrlHeadIndex;
  Uint32 tsrlTmp;

  tsrlHeadIndex = ((tslPageindex << ZSHIFT_PLUS) - (tslPageindex << ZSHIFT_MINUS)) + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
  arrGuard(tsrlHeadIndex + 1, 2048);
  tslNextfree = slPageptr.p->word32[tsrlHeadIndex];
  tslPrevfree = slPageptr.p->word32[tsrlHeadIndex + 1];
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = slPageptr.p;
    cundoElemIndex = tsrlHeadIndex;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    cundoElemIndex = ZPOS_EMPTY_LIST;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (tslPrevfree == ZEMPTYLIST) {
    jam();
    tsrlTmp = slPageptr.p->word32[ZPOS_EMPTY_LIST];
    dbgWord32(slPageptr, ZPOS_EMPTY_LIST, ((tsrlTmp >> 7) << 7) | tslNextfree);
    slPageptr.p->word32[ZPOS_EMPTY_LIST] = ((tsrlTmp >> 7) << 7) | tslNextfree;
  } else {
    ndbrequire(tslPrevfree < ZEMPTYLIST);
    jam();
    tsrlTmp = ((tslPrevfree << ZSHIFT_PLUS) - (tslPrevfree << ZSHIFT_MINUS)) + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
    if (fragrecptr.p->createLcp == ZTRUE) {
      cundoElemIndex = tsrlTmp;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(slPageptr, tsrlTmp, tslNextfree);
    slPageptr.p->word32[tsrlTmp] = tslNextfree;
  }//if
  if (tslNextfree < ZEMPTYLIST) {
    jam();
    tsrlTmp = ((tslNextfree << ZSHIFT_PLUS) - (tslNextfree << ZSHIFT_MINUS)) + ((ZHEAD_SIZE + ZBUF_SIZE) - (ZCON_HEAD_SIZE - 1));
    if (fragrecptr.p->createLcp == ZTRUE) {
      cundoElemIndex = tsrlTmp;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(slPageptr, tsrlTmp, tslPrevfree);
    slPageptr.p->word32[tsrlTmp] = tslPrevfree;
  } else {
    ndbrequire(tslNextfree == ZEMPTYLIST);
    jam();
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       IF WE ARE UPDATING THE HEADER WE ARE CREATING A NEW CONTAINER IN THE PAGE.  */
  /*       TO BE ABLE TO FIND ALL LOCKED ELEMENTS WE KEEP ALL CONTAINERS IN LINKED     */
  /*       LISTS IN THE PAGE.                                                          */
  /*                                                                                   */
  /*       ZPOS_EMPTY_LIST CONTAINS A NEXT POINTER IN BIT 16-22 THAT REFERS TO THE     */
  /*       FIRST CONTAINER IN A LIST OF USED RIGHT CONTAINERS IN THE PAGE.             */
  /*       ZPOS_EMPTY_LIST CONTAINS A NEXT POINTER IN BIT 23-29 THAT REFERS TO THE     */
  /*       FIRST CONTAINER IN A LIST OF USED LEFT CONTAINERS IN THE PAGE.              */
  /*       EACH CONTAINER IN THE LIST CONTAINS A NEXT POINTER IN BIT 11-17 AND IT      */
  /*       CONTAINS A PREVIOUS POINTER IN BIT 18-24.                                   */
  /* --------------------------------------------------------------------------------- */
  if (tslUpdateHeader == ZTRUE) {
    jam();
    tslNextfree = (slPageptr.p->word32[ZPOS_EMPTY_LIST] >> 16) & 0x7f;
    tsrlNewHead = ZCON_HEAD_SIZE;
    tsrlNewHead = ((tsrlNewHead << 8) + ZEMPTYLIST) + (1 << 7);
    tsrlNewHead = (tsrlNewHead << 7) + tslNextfree;
    tsrlNewHead = tsrlNewHead << 11;
    dbgWord32(slPageptr, tsrlHeadIndex, tsrlNewHead);
    slPageptr.p->word32[tsrlHeadIndex] = tsrlNewHead;
    tsrlTmp = slPageptr.p->word32[ZPOS_EMPTY_LIST] & 0xff80ffff;
    dbgWord32(slPageptr, ZPOS_EMPTY_LIST, tsrlTmp | (tslPageindex << 16));
    slPageptr.p->word32[ZPOS_EMPTY_LIST] = tsrlTmp | (tslPageindex << 16);
    if (tslNextfree < ZEMPTYLIST) {
      jam();
      tsrlTmp = ((tslNextfree << ZSHIFT_PLUS) - (tslNextfree << ZSHIFT_MINUS)) + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        cundoElemIndex = tsrlTmp;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      tsrlTmp1 = slPageptr.p->word32[tsrlTmp] & 0xfe03ffff;
      dbgWord32(slPageptr, tsrlTmp, tsrlTmp1 | (tslPageindex << 18));
      slPageptr.p->word32[tsrlTmp] = tsrlTmp1 | (tslPageindex << 18);
    } else {
      ndbrequire(tslNextfree == ZEMPTYLIST);
      jam();
    }//if
  }//if
  ilcPageptr.p = slPageptr.p;
  increaselistcont(signal);
}//Dbacc::seizeRightlist()


//---------------------------------------------------------------------------------
//  ALLOC_SPECIFIC_LONG_OVERFLOW_PAGE 
//                                             
//          DESCRIPTION: ALLOCATES A LONG OVER FLOW PAGE AND PUTS IT IN A SPECIFIED
//                       DIRINDEX. THIS IS TO SUPPORT AN UNDO_DELETE AFTER AN 
//                       UNDO_INSERT ON THE SAME LONG KEY IN A LCP.
//                       UNDO_INSERT ONLY HAVE A REFERENCE TO THE KEY AND TO MAKE 
//                       IT POSSIBLE TO DELETE THE KEY, THE REFERENCE MUST BE 
//                       ACCURATE, WHICH MEANS THE KEY MUST BE SAVED ON THE SAME 
//                       PLACE IT WAS DELETED FROM. 
//--------------------------------------------------------------------------------- 
void Dbacc::allocSpecificLongOverflowPage(Signal* signal) 
{
  DirRangePtr aloDirRangePtr;
  DirectoryarrayPtr aloOverflowDirptr;

  if ((cfirstfreepage == RNIL) &&
      (cfreepage >= cpagesize)) {
    jam();   
    zpagesize_error("Dbacc::allocSpecificLongOverflowPage");
    tresult = ZPAGESIZE_ERROR;
    return;
  }

  if ((cfirstfreedir == RNIL) &&
      (cdirarraysize <= cdirmemory)) {
    jam();
    tresult = ZDIRSIZE_ERROR;
    return;
  }

  tmpP = taslpDirIndex;
  aloDirRangePtr.i = fragrecptr.p->overflowdir;
  tmpP2 = tmpP >> 8;
  tmpP = tmpP & 0xff;
  ptrCheckGuard(aloDirRangePtr, cdirrangesize, dirRange);
  arrGuard(tmpP2, 256);

  if (aloDirRangePtr.p->dirArray[tmpP2] == RNIL) {
    jam();
    seizeDirectory(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      sendSystemerror(signal);
      return;
    }
    aloDirRangePtr.p->dirArray[tmpP2] = sdDirptr.i;
  } else {
    jam();
    sdDirptr.i = RNIL;
    ptrNull(sdDirptr);
  }

  aloOverflowDirptr.i = aloDirRangePtr.p->dirArray[tmpP2];
  ptrCheckGuard(aloOverflowDirptr, cdirarraysize, directoryarray);
  seizePage(signal);
  if (tresult > ZLIMIT_OF_ERROR) {
    jam();
    sendSystemerror(signal);
    return;
  }//if

  if (aloOverflowDirptr.p->pagep[tmpP] != RNIL) {
    jam();
    sendSystemerror(signal);
    return;
  }

  aloOverflowDirptr.p->pagep[tmpP] = spPageptr.i;
  iloPageptr.p = spPageptr.p;
  iloPageptr.i = spPageptr.i;
  tiloIndex = taslpDirIndex;
  initLongOverpage(signal);
  aslpPageptr.i = spPageptr.i;
  aslpPageptr.p = spPageptr.p;
}//Dbacc::allocSpecificLongOverflowPage

/* --------------------------------------------------------------------------------- */
/*  ALLOC_LONG_OVERFLOW_PAGE                                                         */
/*          DESCRIPTION:                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::allocLongOverflowPage(Signal* signal) 
{
  DirRangePtr aloDirRangePtr;
  DirectoryarrayPtr aloOverflowDirptr;
  OverflowRecordPtr aloOverflowRecPtr;
  Uint32 taloIndex;

  if ((cfirstfreepage == RNIL) &&
      (cfreepage >= cpagesize)) {
    jam(); 
    zpagesize_error("Dbacc::allocLongOverflowPage");
    tresult = ZPAGESIZE_ERROR;
    return;
  }//if
  if ((cfirstfreedir == RNIL) &&
      (cdirarraysize <= cdirmemory)) {
    jam();
    tresult = ZDIRSIZE_ERROR;
    return;
  }//if
  if (fragrecptr.p->firstFreeDirindexRec != RNIL) {
    jam();
    aloOverflowRecPtr.i = fragrecptr.p->firstFreeDirindexRec;
    ptrCheckGuard(aloOverflowRecPtr, coverflowrecsize, overflowRecord);
    troOverflowRecPtr.p = aloOverflowRecPtr.p;
    takeRecOutOfFreeOverdir(signal);
    taloIndex = aloOverflowRecPtr.p->dirindex;
    rorOverflowRecPtr = aloOverflowRecPtr;
    releaseOverflowRec(signal);
  } else {
    jam();
    taloIndex = fragrecptr.p->lastOverIndex;
    fragrecptr.p->lastOverIndex++;
  }//if
  tmpP = taloIndex;
  aloDirRangePtr.i = fragrecptr.p->overflowdir;
  tmpP2 = tmpP >> 8;
  tmpP = tmpP & 0xff;
  ptrCheckGuard(aloDirRangePtr, cdirrangesize, dirRange);
  arrGuard(tmpP2, 256);
  if (aloDirRangePtr.p->dirArray[tmpP2] == RNIL) {
    jam();
    seizeDirectory(signal);
    ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    aloDirRangePtr.p->dirArray[tmpP2] = sdDirptr.i;
  } else {
    jam();
    sdDirptr.i = RNIL;
    ptrNull(sdDirptr);
  }//if
  aloOverflowDirptr.i = aloDirRangePtr.p->dirArray[tmpP2];
  ptrCheckGuard(aloOverflowDirptr, cdirarraysize, directoryarray);
  seizePage(signal);
  ndbrequire(tresult <= ZLIMIT_OF_ERROR);
  aloOverflowDirptr.p->pagep[tmpP] = spPageptr.i;
  iloPageptr = spPageptr;
  tiloIndex = taloIndex;
  initLongOverpage(signal);
  alpPageptr = spPageptr;
  ipaPagePtr = spPageptr;
  tipaArrayPos = 3;
  insertPageArrayList(signal);
}//Dbacc::allocLongOverflowPage()

/* --------------------------------------------------------------------------------- */
/* GET_LONG_KEY_PAGE                                                                 */
/*          DESCRIPTION: SEARCH FOR A FREE OVERFLOW  PAGE TO STORE A LONG KEY.       */
/*                       LONG_KEY_PAGE_PTR IS RETURNED.                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::getLongKeyPage(Signal* signal) 
{
  LongKeyPage *glkPage;

  jam();

  Uint32 tglkLongIndex = 0;

  ndbrequire(operationRecPtr.p->tupkeylen <= ZWORDS_IN_PAGE - ZHEAD_SIZE);

  // Do not look in longKeyPageArray[tglkLongIndex] where the pages are to small.
  if(operationRecPtr.p->tupkeylen < 128) {
    jam();
    tglkLongIndex = 0;
  } else {
    jam();
    tglkLongIndex = (operationRecPtr.p->tupkeylen - 128) / 512;
  }//if

  // Go through the longKeyPageArray and search for a page.
  for (; tglkLongIndex <= ZMAX_LONG_KEY_ARRAY_INDEX; tglkLongIndex++) {
    jam();
    glkPageptr.i = fragrecptr.p->longKeyPageArray[tglkLongIndex];    

    if (glkPageptr.i != RNIL) {
      // A page is found.
      jam();
      do {
	ptrCheckGuard(glkPageptr, cpagesize, page8);
	glkPage = (LongKeyPage *) &glkPageptr.p->word32[0];
	
	// Check page if there is enough memory available. Accept only page 
	// with free_area > tupkeylen, this leaves at least one word for eventually 
	// an increase in the index area.
	if (glkPage->header.freeArea > operationRecPtr.p->tupkeylen){
	  // The page found is OK
	  jam();
	  return;
	} else {
	  // Not enough space in page, look in the next page if not RNIL,
	  // otherwise continue with for-loop.
	  jam();
	  glkPageptr.i = glkPage->header.nextPage;
	}
      }//do
      while (glkPageptr.i != RNIL);
    }//if
  }//for

  // No page with enough space was available, allocate a new page!
  jam();
  allocLongOverflowPage(signal);
  glkPageptr = alpPageptr;
}//Dbacc::getLongKeyPage()

/* --------------------------------------------------------------------------------- */
/* INIT_LONG_OVERPAGE                                                                */
/*         INPUT. ILO_PAGEPTR, POINTER TO AN OVERFLOW PAGE RECORD                    */
/*         DESCRIPTION: CONTAINERS AND FREE LISTS OF THE PAGE, GET INITIALE VALUE    */
/*         ACCORDING TO LH3 AND PAGE STRUCTOR DISACRIPTION OF NDBACC BLOCK           */
/* --------------------------------------------------------------------------------- */
void Dbacc::initLongOverpage(Signal* signal) 
{
  iloPageptr.p->word32[ZPOS_PAGE_ID] = tiloIndex;
  iloPageptr.p->word32[ZPOS_PAGE_TYPE] = ZLONG_PAGE_TYPE << ZPOS_PAGE_TYPE_BIT;
  iloPageptr.p->word32[ZPOS_NO_ELEM_IN_PAGE] = 0;
  iloPageptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
  iloPageptr.p->word32[ZPOS_FREE_AREA_IN_PAGE] = ZWORDS_IN_PAGE - ZHEAD_SIZE;
  iloPageptr.p->word32[ZPOS_LAST_INDEX] = 0;
  iloPageptr.p->word32[ZPOS_INSERT_INDEX] = ZHEAD_SIZE;
  iloPageptr.p->word32[ZPOS_ARRAY_POS] = ZDEFAULT_LIST;
  iloPageptr.p->word32[ZPOS_NEXT_FREE_INDEX] = 0;
  iloPageptr.p->word32[ZPOS_NEXT_PAGE] = RNIL;
  iloPageptr.p->word32[ZPOS_PREV_PAGE] = RNIL;
  iloPageptr.p->word32[12] = 0;
  iloPageptr.p->word32[13] = 0;
  iloPageptr.p->word32[14] = 0;
  iloPageptr.p->word32[15] = 0;
  // Initialize free indexes
  for (int i = 1; i < (ZWORDS_IN_PAGE - ZHEAD_SIZE); i++)
    iloPageptr.p->word32[ZWORDS_IN_PAGE - i] = i + 1;
}//Dbacc::initLongOverpage()

//--------------------------------------------------------------------------------- 
// STORE_LONG_KEYS_AT_POS     
//                                                       
//          INPUT:       SLKAP_PAGEPTR                                               
//                       SLKAP_COPY_PAGEPTR                                          
//                       TSLKAP_KEY_LEN                                              
//                       TSLKAP_PAGE_INDEX                                           
//                                                                                   
//          DESCRIPTION: A LONG ELEMENT IS STORED ON A LONG_KEY_PAGE AT A            
//                       SPECIFIC POSITION. THIS FUNCTION IS USED BY UNDO_DELETE.    
//--------------------------------------------------------------------------------- 
void Dbacc::storeLongKeysAtPos(Signal* signal) 
{
  Uint32 tslkapHighestIndex;  
  Uint32 tslkapLastSize;
  Uint32 tslkapInsertIndex;
  Uint32 tslkapIndexIncreaseSize;
  Uint32 tslkapTmp;

  LongKeyPage *slkapPage;

  jam();
  slkapPage = (LongKeyPage *) &slkapPageptr.p->word32[0];

#ifdef VM_TRACE
  checkIndexInLongKeyPage(slkapPageptr.i, "storeLongKeysAtPos");
#endif

  //  if (csystemRestart != ZTRUE) {
  if (cundoLogActive != ZTRUE) {
    //-------------------------------------------------------------
    // This function is only allowed to be called during 
    // undolog execution.
    //-------------------------------------------------------------
    jam();
    sendSystemerror(signal);
    return;
  }

  if (slkapPage->word32[ZWORDS_IN_PAGE - tslkapPageIndex] >> 16 != 0 ) {
    //-------------------------------------------------------------
    // The index should be empty, we have a serious problem. 
    //-------------------------------------------------------------   
    jam();
    sendSystemerror(signal);
    return;
  }

  //-------------------------------------------------------------
  // Calculate some variables to use later.
  //-------------------------------------------------------------
  tslkapHighestIndex = slkapPage->header.highestIndex;
  tslkapPageIndex > tslkapHighestIndex ?
    tslkapIndexIncreaseSize = tslkapPageIndex - tslkapHighestIndex :
    tslkapIndexIncreaseSize = 0;

  slkapPage->header.highestIndex += tslkapIndexIncreaseSize;
  
  if ((slkapPage->header.freeArea - tslkapIndexIncreaseSize) 
      < tslkapKeyLen) {
    //-------------------------------------------------------------
    // Not enough area in the page, a serious problem. 
    //-------------------------------------------------------------   
    jam();
    sendSystemerror(signal);
    return;
  }

  //-------------------------------------------------------------
  // Fix the free index list. We might put in a key in the 
  // middle of the list, so we must fix the free list and the 
  // free index pointers.
  //-------------------------------------------------------------
  slkapPage->header.nextFreeIndex = 0;
  
  for (Uint32 i = tslkapHighestIndex + tslkapIndexIncreaseSize; i > 0; i--) {
    if (i == tslkapPageIndex) {
      // The key index shall not be in the free list.
      continue;
    }

    if (slkapPage->word32[ZWORDS_IN_PAGE - i] >> 16 == 0 ) {
      // Go through all empty indexes.
      slkapPage->word32[ZWORDS_IN_PAGE - i] = slkapPage->header.nextFreeIndex;
      arrGuard(i, 2048);
      slkapPage->header.nextFreeIndex = i;  
    }
  }
    
  //-------------------------------------------------------------
  // Decrement the free area in page according to the above 
  // increase in index size.
  //-------------------------------------------------------------
  slkapPage->header.freeArea -= tslkapIndexIncreaseSize;

  tslkapLastSize = ZWORDS_IN_PAGE - slkapPage->header.highestIndex
    - slkapPage->header.insertPos;

  //-------------------------------------------------------------
  // Check if we have to reorganize the page.
  //-------------------------------------------------------------
  if (tslkapLastSize >= tslkapKeyLen) {
    jam();
  } else {
    jam();
    relpPageptr.p = slkapPageptr.p;
    reorgLongPage(signal);
  }

  //-------------------------------------------------------------
  // Insert the key and update page attributes.
  //-------------------------------------------------------------
  jam();
  // Increase the number of element in the page. 
  slkapPage->header.noOfElements++;
  jam();
  // Put in the key reference into the index. The reference 
  // consists of key length and insert position.
  arrGuard(ZWORDS_IN_PAGE - tslkapPageIndex, 2048);
  slkapPage->word32[ZWORDS_IN_PAGE - tslkapPageIndex] = 
    slkapPage->header.insertPos | (tslkapKeyLen << 16);
  jam();
  // Increase the key insert position.
  tslkapInsertIndex = slkapPage->header.insertPos;
  slkapPage->header.insertPos += tslkapKeyLen;
  jam();
  // Decrease the free area.
  slkapPage->header.freeArea -= tslkapKeyLen;
  jam();

  // Update pageArrayPos. insertPageArrayList() called from execACC_OVER_REC
  // needs this value. 
  if (slkapPage->header.freeArea < 128) {
    jam();
    slkapPage->header.pageArrayPos = 4;
  } else {
    jam();
    slkapPage->header.pageArrayPos = (slkapPage->header.freeArea - 128) / 512;
  }//if

  // Store the actual key at the insert position.
  Uint32 guard27 = tslkapKeyLen - 1;
  arrGuard(guard27 + tslkapInsertIndex, 2048);
  for (tslkapTmp = 0; tslkapTmp <= guard27; tslkapTmp++) {
    jam();
    slkapPage->word32[tslkapTmp + tslkapInsertIndex] = slkapCopyPageptr.p->word32[tslkapTmp];
  }//for
}//Dbacc::storeLongKeysAtPos

/* --------------------------------------------------------------------------------- */
/* STORE_LONG_KEYS                                                                   */
/*       INPUT:          SLK_PAGEPTR                                                 */
/*                       SLK_COPY_PAGEPTR                                            */
/*                       TSLK_KEY_LEN                                                */
/*       OUTPUT:         TSLK_PAGE_INDEX                                             */
/*                                                                                   */
/*          DESCRIPTION: A LONG ELEMENT IS STORED ON A LONG_KEY_PAGE.                */
/* --------------------------------------------------------------------------------- */
void Dbacc::storeLongKeys(Signal* signal) 
{
  Uint32 tslkLastSize;
  Uint32 tslkInsertIndex;
  Uint32 tslkArrayPos;
  Uint32 tslkTmp;
  Uint32 guard27;
  LongKeyPage *slkPage;

  jam();
  slkPage = (LongKeyPage *) &slkPageptr.p->word32[0];

#ifdef VM_TRACE
  checkIndexInLongKeyPage(slkPageptr.i, "storeLongKeys1");
#endif

  // Accept only page with free_area > tupkeylen, this leaves at least
  // one word for eventually an increase in the index area. 
  ndbrequire(slkPage->header.freeArea > tslkKeyLen);

  dbgWord32(slkPageptr, ZPOS_LAST_INDEX, slkPage->header.highestIndex);
  dbgWord32(slkPageptr, ZPOS_INSERT_INDEX, slkPage->header.insertPos);

  tslkLastSize = ZWORDS_IN_PAGE - slkPage->header.highestIndex - slkPage->header.insertPos;

  if (tslkLastSize > operationRecPtr.p->tupkeylen) {
    // WE DO NOT NEED TO REORGANIZE THE PAGE TO INSERT THE NEW KEY. IT FITS INTO THE    
    // SIZE REMAINING AT THE END. 
    jam();
  } else {
    // THE KEY FITS INTO THE PAGE BUT ONLY AFTER REORGANISING THE PAGE. 
    jam();
    relpPageptr.p = slkPageptr.p;
    reorgLongPage(signal);
  }//if

  if (slkPage->header.nextFreeIndex == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*  THE PAGE INDEX HAS NO EMPTY SLOTS. WE MUST EXTEND THE PAGE INDEX BY ONE NEW SLOT.*/
    /* --------------------------------------------------------------------------------- */
    tslkPageIndex = slkPage->header.highestIndex + 1;
  } else {
    jam();
    tslkPageIndex = slkPage->header.nextFreeIndex;
  }//if

  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*  ON LONG PAGES WE USE A PHYSIOLOGICAL LOGGING SCHEME. THIS MEANS THAT WE ONLY NEED*/
    /*  TO SPECIFY WHICH INDEX TO DELETE IN ORDER TO UNDO THE CHANGES WE DO. THE         */
    /*  POSSIBLE REORGANISATION DO NOT CHANGE THE LOGICAL LAYOUT OF THE PAGE.            */
    /* --------------------------------------------------------------------------------- */
    datapageptr.p = slkPageptr.p;
    cundoElemIndex = tslkPageIndex;
    cundoinfolength = 0;
    undoWritingProcess(signal);
  }//if

  if (slkPage->header.nextFreeIndex == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*  THE PAGE INDEX HAS NO EMPTY SLOTS. WE MUST EXTEND THE PAGE INDEX BY ONE NEW SLOT.*/
    /* --------------------------------------------------------------------------------- */
    dbgWord32(slkPageptr, ZPOS_LAST_INDEX, slkPage->header.highestIndex + 1);
    slkPage->header.highestIndex++;
    ndbrequire(slkPage->header.insertPos < (ZWORDS_IN_PAGE - slkPage->header.highestIndex));
    // Reset index. We have already checked that we can increase "highestIndex" value 
    // without overwriting the data part.
    slkPage->word32[ZWORDS_IN_PAGE - slkPage->header.highestIndex] = 0;
    dbgWord32(slkPageptr, ZPOS_FREE_AREA_IN_PAGE, slkPage->header.freeArea - 1);
    slkPage->header.freeArea--;
  } else {
    jam();
    dbgWord32(slkPageptr, ZPOS_NEXT_FREE_INDEX, slkPage->word32[ZWORDS_IN_PAGE - tslkPageIndex]);
    arrGuard(ZWORDS_IN_PAGE - tslkPageIndex, 2048);
    arrGuard(slkPage->word32[ZWORDS_IN_PAGE - tslkPageIndex], 2048);

    slkPage->header.nextFreeIndex = slkPage->word32[ZWORDS_IN_PAGE - tslkPageIndex];
    if(slkPage->header.nextFreeIndex > slkPage->header.highestIndex){
      slkPage->header.nextFreeIndex = 0;
      dbgWord32(slkPageptr, ZPOS_NEXT_FREE_INDEX, slkPage->header.nextFreeIndex);
    }
  }//if

  dbgWord32(slkPageptr, ZWORDS_IN_PAGE - tslkPageIndex, tslkKeyLen);
  dbgWord32(slkPageptr, ZWORDS_IN_PAGE - tslkPageIndex, slkPage->header.insertPos);
  arrGuard(ZWORDS_IN_PAGE - tslkPageIndex, 2048);
  slkPage->word32[ZWORDS_IN_PAGE - tslkPageIndex] = 
    slkPage->header.insertPos | (tslkKeyLen << 16);
  
  dbgWord32(slkPageptr, ZPOS_INSERT_INDEX, slkPage->header.insertPos);
  tslkInsertIndex = slkPage->header.insertPos;
  slkPage->header.insertPos += tslkKeyLen;
  
  dbgWord32(slkPageptr, ZPOS_FREE_AREA_IN_PAGE, slkPage->header.freeArea - tslkKeyLen);
  slkPage->header.freeArea = slkPage->header.freeArea - tslkKeyLen;
  if (slkPage->header.freeArea < 128) {
    jam();
    tslkArrayPos = 4;
  } else {
    jam();
    tslkArrayPos = (slkPage->header.freeArea - 128) / 512;
  }//if

  if (tslkArrayPos != slkPage->header.pageArrayPos) {
    jam();
    if (cundoLogActive != ZTRUE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WE ONLY HANDLE THE LISTS WHEN WE ARE NOT IN A SYSTEM RESTART.               */
      /* --------------------------------------------------------------------------------- */
      rfpPageptr = slkPageptr;
      trfpArrayPos = slkPage->header.pageArrayPos;
      removeFromPageArrayList(signal);
      ipaPagePtr = slkPageptr;
      tipaArrayPos = tslkArrayPos;
      slkPage->header.pageArrayPos = tipaArrayPos;
      if (tslkArrayPos != 4) {
	jam();
	/* --------------------------------------------------------------------------------- */
	/*  THE PAGE WILL STILL BE ON ONE OF THE FREE LISTS SINCE AT LEAST 128 * 4   */
	/*  BYTES OF FREE SPACE REMAINS ON THE PAGE.                                         */
	/* --------------------------------------------------------------------------------- */
	insertPageArrayList(signal);
      }//if
    } else {
      // This should never happen. Should use storeLongKeysAtPos() instead when executing
      // undolog.
      ndbrequire(false);
    }
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       INCREASE THE NUMBER OF ELEMENTS IN THE PAGE.                                */
  /* --------------------------------------------------------------------------------- */
  dbgWord32(slkPageptr, ZPOS_NO_ELEM_IN_PAGE, slkPage->header.noOfElements + 1);
  slkPage->header.noOfElements++;

  guard27 = tslkKeyLen - 1;
  arrGuard(guard27 + tslkInsertIndex, 2048);
  for (tslkTmp = 0; tslkTmp <= guard27; tslkTmp++) {
    dbgWord32(slkPageptr, tslkTmp + tslkInsertIndex, slkCopyPageptr.p->word32[tslkTmp]);
    slkPage->word32[tslkTmp + tslkInsertIndex] = slkCopyPageptr.p->word32[tslkTmp];
  }//for

  // Used by abortoperation() in case of an abort.
  operationRecPtr.p->longPagePtr = slkPageptr.i;

  // This is for an eventual LCP start in the middle of this locked operation.
  operationRecPtr.p->longKeyPageIndex = tslkPageIndex;

#ifdef VM_TRACE
  if (cundoLogActive != ZTRUE) checkPageArrayList(signal, "storeLongKeys");
  checkIndexInLongKeyPage(slkPageptr.i, "storeLongKeys2");
#endif

}//Dbacc::storeLongKeys()

/* --------------------------------------------------------------------------------- */
/*  REORGANIZE THE PAGE BY COPYING IT TEMPORARILY TO A NEW AREA AND THEN SIMPLY      */
/*  PUTTING THE OBJECTS BACK ON THE PAGE IN THE SAME ORDER AS THEY ARE PLACED IN THE */
/*  INDEX.                                                                           */
/* --------------------------------------------------------------------------------- */
void Dbacc::reorgLongPage(Signal* signal) 
{
  Uint32 indexStartPos;
  Uint32 pagePos;
  Uint32 pagePos2;
  Uint32 indexNo;
  Uint32 insertPos;
  Uint32 indexValue;
  Uint32 keyLength;
  Uint32 keyPos;
  Uint32 keyEndPos;
  LongKeyPage *reOrgPage;

  ptrGuard(relpPageptr);
  reOrgPage = (LongKeyPage *) &relpPageptr.p->word32[0];

  dbgWord32(relpPageptr, ZPOS_LAST_INDEX, reOrgPage->header.highestIndex);
  indexStartPos = ZWORDS_IN_PAGE - reOrgPage->header.highestIndex;

  // Copy key data part of page to a temporary page.
  for (pagePos = ZHEAD_SIZE; pagePos < indexStartPos; pagePos++) {
    jam();
    arrGuard(pagePos, 2048);
    ckeys[pagePos] = reOrgPage->word32[pagePos];
  }//for

  insertPos = ZHEAD_SIZE;

  // Walk through all the indexes.
  for (indexNo = 1; indexNo <= reOrgPage->header.highestIndex; indexNo++) {
    jam();
    arrGuard(ZWORDS_IN_PAGE - indexNo, 2048);
    dbgWord32(relpPageptr, ZWORDS_IN_PAGE - indexNo, reOrgPage->word32[ZWORDS_IN_PAGE - indexNo]);
    indexValue = reOrgPage->word32[ZWORDS_IN_PAGE - indexNo];

    if ((indexValue >> 16) != 0) {
      // The index contains a reference to a key. 
      jam();
      keyPos = indexValue & 0xffff;
      keyLength = indexValue >> 16;
      dbgWord32(relpPageptr, ZWORDS_IN_PAGE - indexNo, insertPos + (keyLength << 16));
      arrGuard(ZWORDS_IN_PAGE - indexNo, 2048);

      // Refresh the index data with the new key start position in the data part.
      reOrgPage->word32[ZWORDS_IN_PAGE - indexNo] = insertPos + (keyLength << 16);
      keyEndPos = keyPos + keyLength;
      arrGuard(keyEndPos, 2048);

      // Copy the key from  the temporary page
      // to the insert position at original page.
      for (pagePos2 = keyPos; pagePos2 < keyEndPos; pagePos2++, insertPos++) {
        jam();
        dbgWord32(relpPageptr, insertPos, ckeys[pagePos2]);
        arrGuard(insertPos, 2048);
        arrGuard(pagePos2, 2048); 
        reOrgPage->word32[insertPos] = ckeys[pagePos2];
      }//for
    }//if
  }//for
  dbgWord32(relpPageptr, ZPOS_INSERT_INDEX, insertPos);
  reOrgPage->header.insertPos = insertPos;
}//Dbacc::reorgLongPage()


/* --------------------------------------------------------------------------------- */
/*  DELETE_LONG_KEY                                                                  */
/*       INPUT:  DLK_PAGEPTR    PAGE POINTER OF DELETED KEY OBJECT                   */
/*               TDLK_LOGICAL_PAGE_INDEX  LOGICAL PAGE INDEX OF DELETED KEY OBJECT   */
/*                                                                                   */
/*          DESCRIPTION: DELETE AN ELEMENT OF A LONG_KEY_PAGE.                       */
/* --------------------------------------------------------------------------------- */
void Dbacc::deleteLongKey(Signal* signal) 
{
  Uint32 tdlkLastIndex;
  Uint32 tdlkNextPosition;
  Uint32 tdlkFreeArea;
  Uint32 tdlkArrayPos;
  Uint32 tdlkOldArrayPos;
  LongKeyPage *dlkPage;

  jam();
  dlkPage = (LongKeyPage *) &dlkPageptr.p->word32[0];

#ifdef VM_TRACE
  checkIndexInLongKeyPage(dlkPageptr.i, "deleteLongKey1");
#endif
 
  dbgWord32(dlkPageptr, ZWORDS_IN_PAGE - tdlkLogicalPageIndex, dlkPage->word32[ZWORDS_IN_PAGE - tdlkLogicalPageIndex]  >> 16);
  dbgWord32(dlkPageptr, ZWORDS_IN_PAGE - tdlkLogicalPageIndex, dlkPage->word32[ZWORDS_IN_PAGE - tdlkLogicalPageIndex] & 0xffff);
  arrGuard(ZWORDS_IN_PAGE - tdlkLogicalPageIndex, 2048);

  const Uint32 tdlkIndexValue = dlkPage->word32[ZWORDS_IN_PAGE - tdlkLogicalPageIndex];
  const Uint32 tdlkKeyLen = tdlkIndexValue >> 16;
  const Uint32 tdlkPhysPageIndex = tdlkIndexValue & 0xffff;

  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       WE LOG THE DELETE LONG KEY BY LOGGING THE DELETED KEY AND ITS LOGICAL INDEX.*/
    /* --------------------------------------------------------------------------------- */
    datapageptr.p = dlkPageptr.p;
    cundoElemIndex = tdlkLogicalPageIndex;
    cundoinfolength = tdlkKeyLen;
    undoWritingProcess(signal);
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       DECREASE THE NUMBER OF ELEMENTS IN THE PAGE.                                */
  /* --------------------------------------------------------------------------------- */
  dbgWord32(dlkPageptr, ZPOS_NO_ELEM_IN_PAGE, dlkPage->header.noOfElements - 1);
  dlkPage->header.noOfElements--;

  arrGuard(dlkPage->header.noOfElements, ZMAX_NO_OF_LONGKEYS_IN_PAGE);

  /* --------------------------------------------------------------------------------- */
  /*       INCREASE THE FREE AREA IN THE PAGE.                                         */
  /* --------------------------------------------------------------------------------- */
  dbgWord32(dlkPageptr, ZPOS_FREE_AREA_IN_PAGE, dlkPage->header.freeArea + tdlkKeyLen);
  dbgWord32(dlkPageptr, ZPOS_LAST_INDEX, dlkPage->header.highestIndex);

  dlkPage->header.freeArea += tdlkKeyLen;

  if (dlkPage->header.noOfElements == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THE PAGE IS NOW EMPTY, WE CAN RELEASE IT.                                   */
    /* --------------------------------------------------------------------------------- */
    if (dlkPage->header.freeArea != 
	(ZWORDS_IN_PAGE - ZHEAD_SIZE - dlkPage->header.highestIndex )) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       SOME AREA IN THE PAGE IS STILL LEFT BUT NO ELEMENTS, INCONSISTENT           */
      /* --------------------------------------------------------------------------------- */
      sendSystemerror(signal);
    }//if
    /* --------------------------------------------------------------------------------- */
    /*  WE REMOVE THE PAGE FROM THE LIST OF FREE LONG PAGES. THERE IS NO RISK THAT IT    */
    /*  DID NOT BELONG TO ANY SINCE IT IS NOT ALLOWED TO HAVE THAT LARGE KEYS.           */
    /* --------------------------------------------------------------------------------- */

    if (cundoLogActive != ZTRUE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WHEN DELETING KEYS DURING SYSTEM RESTART WE NEED NOT UPDATE THE LISTS.      */
      /* --------------------------------------------------------------------------------- */
      // REMOVEFROMLIST is done by releaseLongPage(). EDTJAMO.
      //           rfpPageptr = dlkPageptr;
      //           trfpArrayPos = dlkPage->header.pageArrayPos;
      //           removeFromPageArrayList(signal, "deleteLongKey");
      rlopPageptr = dlkPageptr;
      releaseLongPage(signal);
      return;
    } else {
      // Must remove reference to the removed key, otherwise left in index. EDTJAMO.
      arrGuard(ZWORDS_IN_PAGE - tdlkLogicalPageIndex, 2048);
      arrGuard(tdlkLogicalPageIndex, 2048);

      tdlkNextPosition = dlkPage->header.nextFreeIndex;
      dlkPage->header.nextFreeIndex = tdlkLogicalPageIndex;
      dbgWord32(dlkPageptr, ZWORDS_IN_PAGE - tdlkLogicalPageIndex, tdlkNextPosition);
      dlkPage->word32[ZWORDS_IN_PAGE - tdlkLogicalPageIndex] = tdlkNextPosition;
    }
  } else {
    /* --------------------------------------------------------------------------------- */
    /*       THE PAGE IS NOT EMPTY SO WE WILL REMOVE THE KEY OBJECT AND UPDATE THE       */
    /*       HEADER INFORMATION AND PLACE THE PAGE IN THE PROPER PAGE LIST.              */
    /* --------------------------------------------------------------------------------- */
    tdlkLastIndex = dlkPage->header.highestIndex;
    arrGuard(ZWORDS_IN_PAGE - tdlkLastIndex, 2048);
    if (tdlkLastIndex == tdlkLogicalPageIndex) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WE DELETE THE LAST PAGE INDEX SO WE NEED TO UPDATE THE VALUE. WE MOVE       */
      /*       BACKWARDS UNTIL WE EITHER FIND A USED INDEX OR THAT WE COME TO INDEX ZERO.  */
      /* --------------------------------------------------------------------------------- */
      tdlkLastIndex--;
      while( (tdlkLastIndex > 1) && 
	     (dlkPage->word32[ZWORDS_IN_PAGE - tdlkLastIndex] >> 16) == 0  ) {
	jam();
	tdlkLastIndex--;
      }
      //-----------------------------------------------------
      // Reorganize the rest of the index. Set up the free 
      // list and the free index.
      //-----------------------------------------------------
      UintR dlkTmp = tdlkLastIndex;
      dlkPage->header.nextFreeIndex = 0;
      while( dlkTmp > 0) {
	if ( (dlkPage->word32[ZWORDS_IN_PAGE - dlkTmp] >> 16) == 0  ) {
	  jam();
	  dlkPage->word32[ZWORDS_IN_PAGE - dlkTmp] = dlkPage->header.nextFreeIndex;
	  arrGuard(dlkTmp, 2048);
	  dlkPage->header.nextFreeIndex = dlkTmp;
	}
	dlkTmp--;
      }
      //-----------------------------------------------------
      // Update free area in page and last index.
      //-----------------------------------------------------
      dbgWord32(dlkPageptr, ZPOS_LAST_INDEX, tdlkLastIndex);
      dlkPage->header.highestIndex = tdlkLastIndex;
      dlkPage->header.freeArea = tdlkLogicalPageIndex +
	dlkPage->header.freeArea - tdlkLastIndex;
      tdlkNextPosition = 0;
    } else {
      if (dlkPage->header.highestIndex > tdlkLogicalPageIndex) {
        jam();
        tdlkNextPosition = dlkPage->header.nextFreeIndex;
        dbgWord32(dlkPageptr, ZPOS_NEXT_FREE_INDEX, tdlkLogicalPageIndex);
	arrGuard(tdlkLogicalPageIndex, 2048);
        dlkPage->header.nextFreeIndex = tdlkLogicalPageIndex;
      } else {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       LOGICAL PAGE INDEX LARGER THAN LARGEST INDEX, INCONSISTENT.                 */
	/* --------------------------------------------------------------------------------- */
        sendSystemerror(signal);
        return; // Just to keep compiler happy
      }//if
    }//if
    /* --------------------------------------------------------------------------------- */
    /*       WE INSERT ZERO INTO THE LENGTH PART TO INDICATE A FREE INDEX POSITION.      */
    /*       WE INSERT A POINTER TO THE NEXT FREE INDEX TO AS TO PUT IT INTO A FREE      */
    /*       LIST OF INDEX POSITIONS. WE ONLY DO SO IF IT WAS NOT THE LAST INDEX.        */
    /* --------------------------------------------------------------------------------- */
    dbgWord32(dlkPageptr, ZWORDS_IN_PAGE - tdlkLogicalPageIndex, tdlkNextPosition);
    arrGuard(ZWORDS_IN_PAGE - tdlkLogicalPageIndex, 2048);
    dlkPage->word32[ZWORDS_IN_PAGE - tdlkLogicalPageIndex] = tdlkNextPosition;
    if (dlkPage->header.insertPos == (tdlkPhysPageIndex + tdlkKeyLen)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       THIS ENTRY IS THE LAST ON THE PAGE SO WE WILL UPDATE THE INSERT INDEX       */
      /* --------------------------------------------------------------------------------- */
      dbgWord32(dlkPageptr, ZPOS_INSERT_INDEX, tdlkPhysPageIndex);
      dlkPage->header.insertPos = tdlkPhysPageIndex;
    }//if
  }//if
  dbgWord32(dlkPageptr, ZPOS_FREE_AREA_IN_PAGE, dlkPage->header.freeArea);
  tdlkFreeArea = dlkPage->header.freeArea;
  ndbrequire(tdlkFreeArea <= (ZWORDS_IN_PAGE - ZHEAD_SIZE));
  if (tdlkFreeArea < 128) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*  FREE AREA IS STILL LESS THAN 128 WORDS SO IT SHOULD NOT BE PLACED IN ANY OF THE  */
    /*  FREE LISTS.                                                                      */
    /* --------------------------------------------------------------------------------- */
    dbgWord32(dlkPageptr, ZPOS_ARRAY_POS, dlkPage->header.pageArrayPos);
    ndbrequire(dlkPage->header.pageArrayPos == 4);
  } else {
    jam();
    // Calculate an eventually new arraypos. 
    dbgWord32(dlkPageptr, 0, (tdlkFreeArea - 128) / 512);
    tdlkArrayPos = (tdlkFreeArea - 128) / 512;

    if (cundoLogActive != ZTRUE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WHEN DELETING KEYS DURING SYSTEM RESTART WE NEED NOT UPDATE THE LISTS.      */
      /* --------------------------------------------------------------------------------- */
      dbgWord32(dlkPageptr, ZPOS_ARRAY_POS, dlkPage->header.pageArrayPos);
      tdlkOldArrayPos = dlkPage->header.pageArrayPos;
      if (tdlkArrayPos != tdlkOldArrayPos) {
	jam();
	/* --------------------------------------------------------------------------------- */
	/*       THE NEW MEMORY AREA HAS ENABLED THE PAGE TO MOVE TO A NEW FREE PAGE LIST    */
	/* --------------------------------------------------------------------------------- */
	rfpPageptr = dlkPageptr;
	trfpArrayPos = tdlkOldArrayPos;
	if (tdlkOldArrayPos != 4) {
	  jam();
	  /* --------------------------------------------------------------------------------- */
	  /*  THERE WAS A FREE PAGE LIST TO REMOVE THE PAGE FROM. IF FREE SPACE IS LESS THAN   */
	  /*  128 BYTES THEN IT IS NOT ON ANY FREE LIST.                                       */
	  /* --------------------------------------------------------------------------------- */
	  removeFromPageArrayList(signal);
	}//if
	dlkPage->header.pageArrayPos = tdlkArrayPos;
	ipaPagePtr = dlkPageptr;
	tipaArrayPos = tdlkArrayPos;
	insertPageArrayList(signal);
      }//if
    } else {
      // Update pageArrayPos. We are in a SR, executing undolog, insertPageArrayList() called
      // from execACC_OVER_REC needs this value later.
      dlkPage->header.pageArrayPos = tdlkArrayPos;
    }
  }//if
#ifdef VM_TRACE
  if (cundoLogActive != ZTRUE) checkPageArrayList(signal, "deleteLongKey");
  checkIndexInLongKeyPage(dlkPageptr.i, "deleteLongKey2");
#endif
}//Dbacc::deleteLongKey()


void Dbacc::checkIndexInLongKeyPage(Uint32 pageId, char *calledFrom) {
  Page8Ptr pagePtr;
  LongKeyPage *page;
  Uint32 indexNo;
  Uint32 indexValue;
  Uint32 keyLength;
  Uint32 keyPos;

  pagePtr.i = pageId;
  ptrCheckGuard(pagePtr, cpagesize, page8);
  page = (LongKeyPage *) &pagePtr.p->word32[0];

  // Check the header variables.
  if (page->header.nextFreeIndex > 2048 ||
      page->header.highestIndex > 2048 ||
      page->header.insertPos > 2048 ||
      page->header.freeArea > 2048 ||
      page->header.noOfElements > 225) {
   ndbout << " ERROR in checkIndexInLongKeyPage, called from " << calledFrom << endl
	   << " pagePtr.i = " << pageId << endl;
    printoutInfoAndShutdown(page);
  }

  // Walk through all the indexes.
  for (indexNo = 1; indexNo <= page->header.highestIndex; indexNo++) {
    jam();
    indexValue = page->word32[ZWORDS_IN_PAGE - indexNo];

    if ((indexValue >> 16) == 0) {
      ; // key length is 0, means no key reference at this position in index.
    } else {
      // The index contains a reference to a key. 
      jam();
      keyPos = indexValue & 0xffff;
      keyLength = indexValue >> 16;
      if (keyPos >= ZWORDS_IN_PAGE || keyLength >= ZWORDS_IN_PAGE) {
	jam();
	ndbout << " ERROR in checkIndexInLongKeyPage, called from " << calledFrom << endl
	       << " keyPos = " << keyPos << endl
	       << " keyLength = " << keyLength << endl
	       << " page->header.noOfElements = " << page->header.noOfElements << endl
	       << " page->header.freeArea = " << page->header.freeArea << endl
	       << " indexNo = " << indexNo << endl
	       << " page->header.highestIndex = " << page->header.highestIndex << endl;
	ndbrequire(false);
      }
    }
  }
}//Dbacc::checkIndexInLongKeyPage


/* --------------------------------------------------------------------------------- */
/*       REMOVE A PAGE FROM THE PAGE ARRAY LIST.                                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::removeFromPageArrayList(Signal* signal) 
{
  Page8Ptr rfpPrevPageptr;
  Page8Ptr rfpNextPageptr;
  LongKeyPage *page;
  LongKeyPage *prevPage;
  LongKeyPage *nextPage;

  jam();

#ifdef VM_TRACE
  checkPageB4Remove(rfpPageptr.i, "removeFromPageArrayList");
#endif

  page = (LongKeyPage *) &rfpPageptr.p->word32[0];

  if (page->header.prevPage == RNIL) {
    jam();
    arrGuard(trfpArrayPos, 4);
    // This page was first in list, remove reference 
    // to this page from the start of the list.
    ndbrequire(fragrecptr.p->longKeyPageArray[trfpArrayPos] == rfpPageptr.i);
    fragrecptr.p->longKeyPageArray[trfpArrayPos] = page->header.nextPage;
  } else {
    jam();
    rfpPrevPageptr.i = page->header.prevPage;
    ptrCheckGuard(rfpPrevPageptr, cpagesize, page8);
    prevPage = (LongKeyPage *) &rfpPrevPageptr.p->word32[0];
    // This page wasn't first in list, remove reference 
    // to this page from the previous page.
    ndbrequire(prevPage->header.nextPage == rfpPageptr.i);
    prevPage->header.nextPage = page->header.nextPage;
  }//if

  if (page->header.nextPage != RNIL) {
    jam();
    rfpNextPageptr.i = page->header.nextPage;
    ptrCheckGuard(rfpNextPageptr, cpagesize, page8);
    nextPage = (LongKeyPage *) &rfpNextPageptr.p->word32[0];
    // This page wasn't last in list, remove reference
    // to this page from the next page.
    ndbrequire(nextPage->header.prevPage == rfpPageptr.i);
    nextPage->header.prevPage = page->header.prevPage;
    // Remove reference to next page in list.
    page->header.nextPage = RNIL;  
  }//if
  
  // This couldn't be set until now.
  // Remove reference to previous page in list.
  page->header.prevPage = RNIL;

#ifdef VM_TRACE
  checkPageArrayList(signal, "removeFromPageArrayList");
#endif
}//Dbacc::removeFromPageArrayList()

/* --------------------------------------------------------------------------------- */
/*       INSERT A PAGE INTO THE PAGE ARRAY LIST.                                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::insertPageArrayList(Signal* signal)
{
  Page8Ptr ipaNextPagePtr;
  LongKeyPage *page;
  LongKeyPage *nextPage;

  jam();

#ifdef VM_TRACE
  checkPageArrayList(signal, "insertPageArrayList1");
  checkPageB4Insert(ipaPagePtr.i, "insertPageArrayList1");
#endif

  page = (LongKeyPage *) &ipaPagePtr.p->word32[0];

  arrGuard(tipaArrayPos, 4);

  if (fragrecptr.p->longKeyPageArray[tipaArrayPos] != RNIL) {
    jam();
    ipaNextPagePtr.i = fragrecptr.p->longKeyPageArray[tipaArrayPos];
    ptrCheckGuard(ipaNextPagePtr, cpagesize, page8);
    nextPage = (LongKeyPage *) &ipaNextPagePtr.p->word32[0];

    // A page already existed in the list, add reference 
    // to this page in the next page.
    nextPage->header.prevPage = ipaPagePtr.i;
  }//if

  page->header.prevPage = RNIL;
  page->header.nextPage = fragrecptr.p->longKeyPageArray[tipaArrayPos];
  page->header.pageArrayPos = tipaArrayPos;

  fragrecptr.p->longKeyPageArray[tipaArrayPos] = ipaPagePtr.i;

#ifdef VM_TRACE
  checkPageArrayList(signal, "insertPageArrayList2");
#endif
}//Dbacc::insertPageArrayList()

// --------------------------------------------------------------------------------- */
//       Check the page array list.
// --------------------------------------------------------------------------------- */
void Dbacc::checkPageArrayList(Signal* signal, char *calledFrom) 
{
  Page8Ptr pagePtr;
  Uint32 pageArrayIndex;
  LongKeyPage *page;
  Uint32 prevPage;

  // Go through the longKeyPageArray and search for a page.
  for (pageArrayIndex = 0; pageArrayIndex <= ZMAX_LONG_KEY_ARRAY_INDEX; pageArrayIndex++) {
    jam();
    pagePtr.i = fragrecptr.p->longKeyPageArray[pageArrayIndex];    
    prevPage = RNIL;

    if (pagePtr.i != RNIL) {
      // A page is found.
      jam();
      do {
	ptrCheckGuard(pagePtr, cpagesize, page8);
	page = (LongKeyPage *) &pagePtr.p->word32[0];
	
	if ((page->header.freeArea >= 128) &&
	    (((page->header.freeArea  - 128) / 512) == page->header.pageArrayPos) &&
	    (pageArrayIndex == page->header.pageArrayPos) &&
	    (page->header.prevPage == prevPage)) {
	  // The page found is OK, test next page.
	  prevPage = pagePtr.i;
	  pagePtr.i = page->header.nextPage;
	  jam();
	} else {
	  jam();
	  ndbout << " ERROR in checkPageArrayList, called from " << calledFrom << endl
		 << " pagePtr.i = " << pagePtr.i << endl
		 << " prevPage = " << prevPage << endl
		 << " pageArrayIndex = " << pageArrayIndex << endl;
	  printoutInfoAndShutdown(page);
	}
      }//do
      while (pagePtr.i != RNIL);
    }//if
  }//for
}//Dbacc::checkPageArrayList()

// --------------------------------------------------------------------------------- */
//       Check the page to put into the pageArrayList.
// --------------------------------------------------------------------------------- */
void Dbacc::checkPageB4Insert(Uint32 pageId, char *calledFrom) {
  Page8Ptr pagePtr;
  Uint32 pageArrayIndex;
  LongKeyPage *page;
  
  pagePtr.i = pageId;
  ptrCheckGuard(pagePtr, cpagesize, page8);
  page = (LongKeyPage *) &pagePtr.p->word32[0];

  if ((page->header.nextPage != RNIL) ||
      (page->header.prevPage != RNIL)) {
    jam();
    ndbout << " ERROR in checkPageB4Insert, called from " << calledFrom << endl
	   << " pagePtr.i = " << pagePtr.i << endl
	   << " page->header.nextPage = " << page->header.nextPage << endl
	   << " page->header.prevPage = " << page->header.prevPage << endl;
    ndbrequire(false);
  }

  // Page should not be inserted in list if free area is less than 512 byte.
  if (page->header.freeArea < 128) {
    jam();
    ndbout << " ERROR in checkPageB4Insert, called from " << calledFrom << endl
	   << " Page has to little free area to be in list." << endl
	   << " pagePtr.i = " << pagePtr.i << endl
	   << " tipaArrayPos = " << tipaArrayPos << endl;
    printoutInfoAndShutdown(page);
  } 

  // Check if position in list is correct
  if ((((page->header.freeArea  - 128) / 512) != page->header.pageArrayPos) ||
      (page->header.pageArrayPos != tipaArrayPos)) {
    ndbout << " ERROR in checkPageB4Insert, called from " << calledFrom << endl
	   << " Incorrect position in list." << endl
	   << " pagePtr.i = " << pagePtr.i << endl
	   << " tipaArrayPos = " << tipaArrayPos << endl;
    printoutInfoAndShutdown(page);
  } 

  // Check if page is already in list.
  for (pageArrayIndex = 0; pageArrayIndex <= ZMAX_LONG_KEY_ARRAY_INDEX; pageArrayIndex++) {
    jam();
    pagePtr.i = fragrecptr.p->longKeyPageArray[pageArrayIndex];    
    
    if (pagePtr.i != RNIL) {
      // A page is found.
      jam();
      do {
	ptrCheckGuard(pagePtr, cpagesize, page8);
	page = (LongKeyPage *) &pagePtr.p->word32[0];
	if (pagePtr.i == pageId) { 
	  jam();
	  ndbout << "ERROR in checkPageB4Insert, called from " << calledFrom << endl
		 << "Page exists already in list." << endl
		 << " pagePtr.i = " << pagePtr.i << endl;
	  printoutInfoAndShutdown(page);
	}
	pagePtr.i = page->header.nextPage;
      }//do
      while (pagePtr.i != RNIL);
    }//if
  }//for
}//Dbacc::checkPageB4Insert()

// --------------------------------------------------------------------------------- */
//       Check the page to remove from the pageArrayList.
// --------------------------------------------------------------------------------- */
void Dbacc::checkPageB4Remove(Uint32 pageId, char *calledFrom) {
  Page8Ptr pagePtr;
  Uint32 pageArrayIndex;
  Uint32 noOfOccurrence = 0;
  Uint32 noOfPagesInList = 0;
  LongKeyPage *page;
  
  LongKeyPage *prevPage;
  LongKeyPage *nextPage;
  Page8Ptr rfpPrevPageptr;
  Page8Ptr rfpNextPageptr;

 
  pagePtr.i = pageId;
  ptrCheckGuard(pagePtr, cpagesize, page8);
  page = (LongKeyPage *) &pagePtr.p->word32[0];

  // Check that page is in list.
  for (pageArrayIndex = 0; pageArrayIndex <= ZMAX_LONG_KEY_ARRAY_INDEX; pageArrayIndex++) {
    jam();
    pagePtr.i = fragrecptr.p->longKeyPageArray[pageArrayIndex];    
    
    if (pagePtr.i != RNIL) {
      // A page is found.
      jam();
      do {
	noOfPagesInList++;
	ptrCheckGuard(pagePtr, cpagesize, page8);
	page = (LongKeyPage *) &pagePtr.p->word32[0];
	if (pagePtr.i == pageId) { 
	  // Check the consistent in list.
	  if (page->header.prevPage != RNIL) {
	    rfpPrevPageptr.i = page->header.prevPage;
	    ptrCheckGuard(rfpPrevPageptr, cpagesize, page8);
	    prevPage = (LongKeyPage *) &rfpPrevPageptr.p->word32[0];
	    if (prevPage->header.nextPage != pageId) {
	      ndbout << "ERROR: inconsistent in checkPageB4Remove, called from " << calledFrom << endl
		     << "prevPage->header.nextPage = " << prevPage->header.nextPage << endl
		     << "pageId = " << pageId << endl;
	      printoutInfoAndShutdown(page);
	    }
	  }
	  // Check the consistent in list.	  	   
	  if (page->header.nextPage != RNIL) {
	    rfpNextPageptr.i = page->header.nextPage;
	    ptrCheckGuard(rfpNextPageptr, cpagesize, page8);
	    nextPage = (LongKeyPage *) &rfpNextPageptr.p->word32[0];
	    if (nextPage->header.prevPage != pageId) {
	      ndbout << "ERROR: inconsistent in checkPageB4Remove, called from " << calledFrom << endl
		     << "nextPage->header.prevPage = " << nextPage->header.prevPage << endl
		     << "pageId = " << pageId << endl;
	      printoutInfoAndShutdown(page);
	    }
	  }
	  jam();
	  noOfOccurrence++;
	}
	pagePtr.i = page->header.nextPage;
      }//do
      while (pagePtr.i != RNIL);
    }//if
  }//for

  if (noOfOccurrence != 1) {
    pagePtr.i = pageId;
    ptrCheckGuard(pagePtr, cpagesize, page8);
    page = (LongKeyPage *) &pagePtr.p->word32[0];
    ndbout << "ERROR in checkPageB4Remove, called from " << calledFrom << endl
	   << "Page occur " << noOfOccurrence << " times in list" << endl
	   << "pageId = " << pageId << endl;
    printoutInfoAndShutdown(page);
  }
}//Dbacc::checkPageB4Remove()


// --------------------------------------------------------------------------------- */
//       Printout an error message and shutdown node.
// --------------------------------------------------------------------------------- */
void Dbacc::printoutInfoAndShutdown(LongKeyPage *page) {
  ndbout << " page->header.pageArrayPos = " << page->header.pageArrayPos  << endl
	 << " ((page->header.freeArea  - 128) / 512) = "
	 << ((page->header.freeArea  - 128) / 512) << endl
	 << " page->header.freeArea = " << page->header.freeArea << endl
	 << " page->header.noOfElements = " << page->header.noOfElements << endl
	 << " page->header.nextPage = " << page->header.nextPage << endl
	 << " page->header.prevPage = " << page->header.prevPage << endl
	 << " page->header.nextFreeIndex = " << page->header.nextFreeIndex << endl
	 << " page->header.insertPos = " << page->header.insertPos << endl
	 << " page->header.highestIndex = " << page->header.highestIndex << endl
	 << " page->header.pageId = " << page->header.pageId << endl;
  ndbrequire(false);
}//Dbacc::printoutInfoAndShutdown()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF INSERT_ELEMENT MODULE                                                */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       MODULE:         READ                                                        */
/*               THE FOLLOWING SUBROUTINES ARE ONLY USED BY GET_ELEMENT AND          */
/*               GETDIRINDEX. THIS ROUTINE IS THE SOLE INTERFACE TO GET ELEMENTS     */
/*               FROM THE INDEX. CURRENT USERS ARE ALL REQUESTS AND EXECUTE UNDO LOG */
/*                                                                                   */
/*               THE FOLLOWING SUBROUTINES ARE INCLUDED IN THIS MODULE:              */
/*               GET_ELEMENT                                                         */
/*               GET_DIRINDEX                                                        */
/*               SEARCH_LONG_KEY                                                     */
/*                                                                                   */
/*               THESE ROUTINES ARE ONLY USED BY THIS MODULE AND BY NO ONE ELSE.     */
/*               ALSO THE ROUTINES MAKE NO USE OF ROUTINES IN OTHER MODULES.         */
/*               THE ONLY SHORT-LIVED VARIABLES USED IN OTHER PARTS OF THE BLOCK ARE */
/*               THOSE DEFINED AS INPUT AND OUTPUT IN GET_ELEMENT AND GETDIRINDEX    */
/*               SHORT-LIVED VARIABLES INCLUDE TEMPORARY VARIABLES, COMMON VARIABLES */
/*               AND POINTER VARIABLES.                                              */
/*               THE ONLY EXCEPTION TO THIS RULE IS FRAGRECPTR WHICH POINTS TO THE   */
/*               FRAGMENT RECORD. THIS IS MORE LESS STATIC ALWAYS DURING A SIGNAL    */
/*               EXECUTION.                                                          */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* GETDIRINDEX                                                                       */
/*       SUPPORT ROUTINE FOR INSERT ELEMENT, GET ELEMENT AND COMMITDELETE            */
/*         INPUT:FRAGRECPTR ( POINTER TO THE ACTIVE FRAGMENT REC)                    */
/*               OPERATION_REC_PTR  (POINTER TO THE OPERATION REC).                  */
/*                                                                                   */
/*         OUTPUT:GDI_PAGEPTR ( POINTER TO THE PAGE OF THE ELEMENT)                  */
/*                TGDI_PAGEINDEX ( INDEX OF THE ELEMENT IN THE PAGE).                */
/*                                                                                   */
/*         DESCRIPTION: CHECK THE HASH VALUE OF THE OPERATION REC AND CALCULATE THE  */
/*                     THE ADDRESS OF THE ELEMENT IN THE HASH TABLE,(GDI_PAGEPTR,    */
/*                     TGDI_PAGEINDEX) ACCORDING TO LH3.                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::getdirindex(Signal* signal) 
{
  DirRangePtr gdiDirRangePtr;
  DirectoryarrayPtr gdiDirptr;
  Uint32 tgdiTmp;
  Uint32 tgdiAddress;

  tgdiTmp = fragrecptr.p->k + fragrecptr.p->lhfragbits;	/* OBS K = 6 */
  tgdiPageindex = operationRecPtr.p->hashValue & ((1 << fragrecptr.p->k) - 1);
  tgdiTmp = operationRecPtr.p->hashValue >> tgdiTmp;
  tgdiTmp = (tgdiTmp << fragrecptr.p->k) | tgdiPageindex;
  tgdiAddress = tgdiTmp & fragrecptr.p->maxp;
  gdiDirRangePtr.i = fragrecptr.p->directory;
  ptrCheckGuard(gdiDirRangePtr, cdirrangesize, dirRange);
  if (tgdiAddress < fragrecptr.p->p) {
    jam();
    tgdiAddress = tgdiTmp & ((fragrecptr.p->maxp << 1) | 1);
  }//if
  tgdiTmp = tgdiAddress >> fragrecptr.p->k;
  arrGuard((tgdiTmp >> 8), 256);
  gdiDirptr.i = gdiDirRangePtr.p->dirArray[tgdiTmp >> 8];
  ptrCheckGuard(gdiDirptr, cdirarraysize, directoryarray);
  gdiPageptr.i = gdiDirptr.p->pagep[tgdiTmp & 0xff];	/* DIRECTORY INDEX OF SEND BUCKET PAGE */
  ptrCheckGuard(gdiPageptr, cpagesize, page8);
}//Dbacc::getdirindex()

/* --------------------------------------------------------------------------------- */
/* GET_ELEMENT                                                                       */
/*        INPUT:                                                                     */
/*               OPERATION_REC_PTR                                                   */
/*               FRAGRECPTR                                                          */
/*        OUTPUT:                                                                    */
/*               TGE_RESULT      RESULT SUCCESS = ZTRUE OTHERWISE ZFALSE             */
/*               TGE_LOCKED      LOCK INFORMATION IF SUCCESSFUL RESULT               */
/*               GE_PAGEPTR      PAGE POINTER OF FOUND ELEMENT                       */
/*               TGE_CONTAINERPTR CONTAINER INDEX OF FOUND ELEMENT                   */
/*               TGE_ELEMENTPTR  ELEMENT INDEX OF FOUND ELEMENT                      */
/*               TGE_FORWARD     DIRECTION OF CONTAINER WHERE ELEMENT FOUND          */
/*                                                                                   */
/*        DESCRIPTION: THE SUBROUTIN GOES THROUGH ALL CONTAINERS OF THE ACTIVE       */
/*                     BUCKET, AND SERCH FOR ELEMENT.THE PRIMARY KEYS WHICH IS SAVED */
/*                     IN THE OPERATION REC ARE THE CHECK ITEMS IN THE SEARCHING.    */
/* --------------------------------------------------------------------------------- */
void Dbacc::getElement(Signal* signal) 
{
  DirRangePtr geOverflowrangeptr;
  DirectoryarrayPtr geOverflowDirptr;
  OperationrecPtr geTmpOperationRecPtr;
  Uint32 tgeElementHeader;
  Uint32 tgeElemStep;
  Uint32 tgeContainerhead;
  Uint32 tgePageindex;
  Uint32 tgeActivePageDir;
  Uint32 tgeNextptrtype;
  register Uint32 tgeKeyptr;
  register Uint32 tgeRemLen;
  register Uint32 tgeCompareLen;
  register Uint32 TelemLen = fragrecptr.p->elementLength;
  register Uint32* Tkeydata = (Uint32*)&signal->theData[7];

  getdirindex(signal);
  tgePageindex = tgdiPageindex;
  gePageptr = gdiPageptr;
  tgeResult = ZFALSE;
  tgeCompareLen = fragrecptr.p->keyLength;
  const Uint32 isAccLockReq = operationRecPtr.p->isAccLockReq;
  if (isAccLockReq) {
    jam();
    tgeCompareLen = 0;
  }

  // We can handle keylength up to 8, but not more (0 means dynamic)
  if (tgeCompareLen >= 9) {
    ACCKEY_error(2); return;
  }//if
  if (TelemLen < 3) {
    ACCKEY_error(3); return;
  }//if
  tgeNextptrtype = ZLEFT;
  tgeLocked = 0;

  const Uint32 tmp = fragrecptr.p->k + fragrecptr.p->lhfragbits;
  const Uint32 opHashValuePart = (operationRecPtr.p->hashValue >> tmp) &0xFFFF;
  do {
    tgeContainerptr = (tgePageindex << ZSHIFT_PLUS) - (tgePageindex << ZSHIFT_MINUS);
    if (tgeNextptrtype == ZLEFT) {
      jam();
      tgeContainerptr = tgeContainerptr + ZHEAD_SIZE;
      tgeElementptr = tgeContainerptr + ZCON_HEAD_SIZE;
      tgeKeyptr = (tgeElementptr + ZELEM_HEAD_SIZE) + fragrecptr.p->localkeylen;
      tgeElemStep = TelemLen;
      tgeForward = 1;
      if (tgeContainerptr >= 2048) { ACCKEY_error(4); return;}
      tgeRemLen = gePageptr.p->word32[tgeContainerptr] >> 26;
      if ((tgeContainerptr + tgeRemLen - 1) >= 2048) { ACCKEY_error(5); return;}
    } else if (tgeNextptrtype == ZRIGHT) {
      jam();
      tgeContainerptr = tgeContainerptr + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      tgeElementptr = tgeContainerptr - 1;
      tgeKeyptr = (tgeElementptr - ZELEM_HEAD_SIZE) - fragrecptr.p->localkeylen;
      tgeElemStep = 0 - TelemLen;
      tgeForward = (Uint32)-1;
      if (tgeContainerptr >= 2048) { ACCKEY_error(4); return;}
      tgeRemLen = gePageptr.p->word32[tgeContainerptr] >> 26;
      if ((tgeContainerptr - tgeRemLen) >= 2048) { ACCKEY_error(5); return;}
    } else {
      ACCKEY_error(6); return;
    }//if
    if (tgeRemLen >= TelemLen) {
      if (tgeRemLen > ZBUF_SIZE) {
        ACCKEY_error(7); return;
      }//if
      /* --------------------------------------------------------------------------------- */
      // There is at least one element in this container. Check if it is the element
      // searched for.
      /* --------------------------------------------------------------------------------- */
      if (tgeCompareLen != 0) {
	/* --------------------------------------------------------------------------------- */
	/*       THIS PART IS USED TO SEARCH FOR KEYS WITH FIXED SIZE. THE LOOP TAKES CARE   */
	/*       OF SEARCHING THROUGH ALL ELEMENTS IN ONE CONTAINER.                         */
	/* --------------------------------------------------------------------------------- */
        do {
          register Uint32 TdataIndex = 0;
          register Uint32 TgeIndex = 0;
          jam();
          tgeRemLen = tgeRemLen - TelemLen;
          do {
            if (gePageptr.p->word32[tgeKeyptr + TgeIndex] != Tkeydata[TdataIndex]) {
              goto compare_next;
            }//if
            TdataIndex++;
            TgeIndex += tgeForward;
          } while (TdataIndex < tgeCompareLen);
	  /* --------------------------------------------------------------------------------- */
	  /*       WE HAVE FOUND THE ELEMENT. GET THE LOCK INDICATOR AND RETURN FOUND.         */
	  /* --------------------------------------------------------------------------------- */
          jam();
          tgeLocked = ElementHeader::getLocked(gePageptr.p->word32[tgeElementptr]);
          tgeResult = ZTRUE;
          TdataIndex = tgeElementptr + tgeForward;
          TgeIndex = TdataIndex + tgeForward;
          operationRecPtr.p->localdata[0] = gePageptr.p->word32[TdataIndex];
          operationRecPtr.p->localdata[1] = gePageptr.p->word32[TgeIndex];
          return;
	  /* --------------------------------------------------------------------------------- */
	  /*       COMPARE NEXT ELEMENT                                                        */
	  /* --------------------------------------------------------------------------------- */
	compare_next:
          if (tgeRemLen <= ZCON_HEAD_SIZE) {
            break;
          }//if
          tgeKeyptr = tgeKeyptr + tgeElemStep;
          tgeElementptr = tgeElementptr + tgeElemStep;
        } while (1);
      } else if (! isAccLockReq) {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       THIS PART IS USED TO SEARCH FOR KEYS WITH VARIABLE LENGTH OR FIXED LENGTH   */
	/*       GREATER THAN 32 BYTES. IN THIS CASE THE KEY PART IS STORED IN A SPECIAL     */
	/*       LONG PAGE PART AND THE HASH INDEX CONTAINS A REFERENCE TO THERE PLUS A      */
	/*       PART OF THE HASH VALUE.                                                     */
	/* --------------------------------------------------------------------------------- */
	do {
          tgeElementHeader = gePageptr.p->word32[tgeElementptr];
          tgeRemLen = tgeRemLen - TelemLen;
	  Uint32 hashValuePart;
          if (ElementHeader::getLocked(tgeElementHeader)) {
            jam();
	    /* --------------------------------------------------------------------------------- */
	    /*       IN THIS CASE THE HASH VALUE PART OF THE ELEMENT HEADER IS STORED IN THE     */
	    /*       OPERATION THAT OWNS THE LOCK. IN THIS CASE WE MIGHT AS WELL GO AHEAD AND    */
	    /*       CHECK THE KEY IN THE LONG PAGE.                                             */
	    /* --------------------------------------------------------------------------------- */
            geTmpOperationRecPtr.i = 
	      ElementHeader::getOpPtrI(tgeElementHeader);
            ptrCheckGuard(geTmpOperationRecPtr, coprecsize, operationrec);
	    hashValuePart = geTmpOperationRecPtr.p->hashvaluePart;
          } else {
            jam();
	    /* --------------------------------------------------------------------------------- */
	    /*       IN THIS CASE THE HASH VALUE PART CAN BE CHECKED TO SEE IF THE HASH VALUE    */
	    /*       GIVES US A REASON TO CONTINUE CHECKING THE FULL KEY.                        */
	    /* --------------------------------------------------------------------------------- */
	    hashValuePart = ElementHeader::getHashValuePart(tgeElementHeader);
          }//if
	  
	  if (hashValuePart == opHashValuePart) {
            jam();
	    /* --------------------------------------------------------------------------------- */
	    /*       IF THE HASH VALUES ARE EQUAL THEN XOR-ING THEM WILL GIVE THE RESULT 0.      */
	    /* --------------------------------------------------------------------------------- */
	    /*       WE HAVE FOUND A KEY WITH IDENTICAL HASH VALUE. MOST LIKELY WE HAVE FOUND THE*/
	    /*       ELEMENT BUT FIRST WE NEED TO PERFORM A KEY COMPARISON.                      */
	    /* --------------------------------------------------------------------------------- */
	    tslcPageIndex = gePageptr.p->word32[tgeKeyptr] & 0x3ff;
            tslcPagedir = gePageptr.p->word32[tgeKeyptr] >> 10;
	    searchLongKey(signal);
            if (tslcResult == ZTRUE) {
              register Uint32 TlocData1, TlocData2;
              jam();
	      /* --------------------------------------------------------------------------------- */
	      /*       WE HAVE FOUND THE ELEMENT. GET THE LOCK INDICATOR AND RETURN FOUND.         */
	      /* --------------------------------------------------------------------------------- */
	      tgeLocked = ElementHeader::getLocked(tgeElementHeader);
              tgeResult = ZTRUE;
              TlocData1 = tgeElementptr + tgeForward;
              TlocData2 = TlocData1 + tgeForward;
              operationRecPtr.p->localdata[0] = gePageptr.p->word32[TlocData1];
              operationRecPtr.p->localdata[1] = gePageptr.p->word32[TlocData2];
              return;
            }//if
          }
	  /* --------------------------------------------------------------------------------- */
	  /*       COMPARE NEXT ELEMENT                                                        */
	  /* --------------------------------------------------------------------------------- */
          if (tgeRemLen <= ZCON_HEAD_SIZE) {
            break;
          }//if
          tgeKeyptr = tgeKeyptr + tgeElemStep;
          tgeElementptr = tgeElementptr + tgeElemStep;
        } while (1);
      } else {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       Search for local key in a lock request                                      */
	/* --------------------------------------------------------------------------------- */
        do {
          tgeRemLen = tgeRemLen - TelemLen;
          // position of local key word 1
          Uint32 TdataIndex = tgeElementptr + tgeForward;
          // XXX assume localkeylen is 1
          if (gePageptr.p->word32[TdataIndex] == Tkeydata[0]) {
            jam();
            tgeLocked = ElementHeader::getLocked(gePageptr.p->word32[tgeElementptr]);
            tgeResult = ZTRUE;
            // position of local key word 2
            Uint32 TgeIndex = TdataIndex + tgeForward;
            operationRecPtr.p->localdata[0] = gePageptr.p->word32[TdataIndex];
            operationRecPtr.p->localdata[1] = gePageptr.p->word32[TgeIndex];
            return;
          }//if
          if (tgeRemLen <= ZCON_HEAD_SIZE) {
            break;
          }//if
          tgeElementptr = tgeElementptr + tgeElemStep;
        } while (1);
      }//if
    }//if
    if (tgeRemLen != ZCON_HEAD_SIZE) {
      ACCKEY_error(8); return;
    }//if
    tgeContainerhead = gePageptr.p->word32[tgeContainerptr];
    tgeNextptrtype = (tgeContainerhead >> 7) & 0x3;
    if (tgeNextptrtype == 0) {
      jam();
      return;	/* NO MORE CONTAINER */
    }//if
    tgePageindex = tgeContainerhead & 0x7f;	/* NEXT CONTAINER PAGE INDEX 7 BITS */
    if (tgePageindex > ZEMPTYLIST) {
      ACCKEY_error(9); return;
    }//if
    if (((tgeContainerhead >> 9) & 1) == ZFALSE) {
      jam();
      tgeActivePageDir = gePageptr.p->word32[tgeContainerptr + 1];	/* NEXT PAGE ID */
      geOverflowrangeptr.i = fragrecptr.p->overflowdir;
      ptrCheckGuard(geOverflowrangeptr, cdirrangesize, dirRange);
      arrGuard((tgeActivePageDir >> 8), 256);
      geOverflowDirptr.i = geOverflowrangeptr.p->dirArray[tgeActivePageDir >> 8];
      ptrCheckGuard(geOverflowDirptr, cdirarraysize, directoryarray);
      gePageptr.i = geOverflowDirptr.p->pagep[tgeActivePageDir & 0xff];
      ptrCheckGuard(gePageptr, cpagesize, page8);
    }//if
  } while (1);
  return;
}//Dbacc::getElement()

/* --------------------------------------------------------------------------------- */
/* SEARCH_LONG_KEY                                                                   */
/*       INPUT:                                                                      */
/*               TSLC_PAGEDIR    PAGE DIRECTORY OF LONG PAGE                         */
/*               TSLC_PAGE_INDEX PAGE INDEX IN LONG PAGE                             */
/*               GE_OPERATION_REC_PTR                                                */
/*       OUTPUT:                                                                     */
/*               TSLC_RESULT                                                         */
/*          DESCRIPTION: SEARCH FOR AN ELEMENT IN A LONG_KEY_PAGE.                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::searchLongKey(Signal* signal) 
{
  DirRangePtr slcOverflowrangeptr;
  DirectoryarrayPtr slcOverflowDirptr;
  Page8Ptr slcPageptr;
  Uint32 tslcIndexValue;
  Uint32 tslcStartIndex;
  Uint32 tslcIndex;
  Uint32 guard30;
  Uint32* Tkeydata = (Uint32*)&signal->theData[7];


  slcOverflowrangeptr.i = fragrecptr.p->overflowdir;
  ptrCheckGuard(slcOverflowrangeptr, cdirrangesize, dirRange);
  arrGuard((tslcPagedir >> 8), 256);
  slcOverflowDirptr.i = slcOverflowrangeptr.p->dirArray[tslcPagedir >> 8];
  ptrCheckGuard(slcOverflowDirptr, cdirarraysize, directoryarray);

  //  dbgWord32(slcOverflowDirptr, (int) (tslcPagedir & 0xff), slcOverflowDirptr.p->pagep[tslcPagedir & 0xff]);

  slcPageptr.i = slcOverflowDirptr.p->pagep[tslcPagedir & 0xff];
  ptrCheckGuard(slcPageptr, cpagesize, page8);
  arrGuard(ZWORDS_IN_PAGE - tslcPageIndex, 2048);
  dbgWord32(slcPageptr, ZWORDS_IN_PAGE - tslcPageIndex, (int)slcPageptr.p->word32[ZWORDS_IN_PAGE - tslcPageIndex] & 0xffff);
  dbgWord32(slcPageptr, ZWORDS_IN_PAGE - tslcPageIndex, slcPageptr.p->word32[ZWORDS_IN_PAGE - tslcPageIndex] >> 16);
  tslcIndexValue = slcPageptr.p->word32[ZWORDS_IN_PAGE - tslcPageIndex];
  if ((tslcIndexValue >> 16) != operationRecPtr.p->tupkeylen) {
    jam();
    tslcResult = ZFALSE;
    return;
  }//if
  tslcStartIndex = tslcIndexValue & 0xffff;
  guard30 = operationRecPtr.p->tupkeylen - 1;
  arrGuard(guard30, 2048);
  arrGuard(guard30 + tslcStartIndex, 2048);
  for (tslcIndex = 0; tslcIndex <= guard30; tslcIndex++) {
    dbgWord32(slcPageptr, tslcIndex + tslcStartIndex, slcPageptr.p->word32[tslcIndex + tslcStartIndex]);
    if (slcPageptr.p->word32[tslcIndex + tslcStartIndex] != Tkeydata[tslcIndex]) {
      jam();
      tslcResult = ZFALSE;
      return;
    }//if
  }//for
  jam();
  tslcResult = ZTRUE;
  operationRecPtr.p->longPagePtr = slcPageptr.i;
  operationRecPtr.p->longKeyPageIndex = tslcPageIndex;
  arrGuard(tslcPageIndex, ZMAX_NO_OF_LONGKEYS_IN_PAGE);
  arrGuard(slcPageptr.i, cpagesize);
}//Dbacc::searchLongKey()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF GET_ELEMENT MODULE                                                   */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       MODULE:         DELETE                                                      */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* COMMITDELETE                                                                      */
/*         INPUT: OPERATION_REC_PTR, PTR TO AN OPERATION RECORD.                     */
/*                FRAGRECPTR, PTR TO A FRAGMENT RECORD                               */
/*                                                                                   */
/*         OUTPUT:                                                                   */
/*                NONE                                                               */
/*         DESCRIPTION: DELETE OPERATIONS WILL BE COMPLETED AT THE COMMIT OF TRANSA- */
/*         CTION. THIS SUBROUTINE SEARCHS FOR ELEMENT AND DELETES IT. IT DOES SO BY  */
/*         REPLACING IT WITH THE LAST ELEMENT IN THE BUCKET. IF THE DELETED ELEMENT  */
/*         IS ALSO THE LAST ELEMENT THEN IT IS ONLY NECESSARY TO REMOVE THE ELEMENT. */
/* --------------------------------------------------------------------------------- */
void Dbacc::commitdelete(Signal* signal, bool systemRestart)
{
  if (!systemRestart) {
    jam();
    signal->theData[0] = fragrecptr.p->myfid;
    signal->theData[1] = fragrecptr.p->myTableId;
    signal->theData[2] = operationRecPtr.p->localdata[0];
    Uint32 localKey = operationRecPtr.p->localdata[0];
    Uint32 pageId = localKey >> MAX_TUPLES_BITS;
    Uint32 pageIndex = localKey & ((1 << MAX_TUPLES_BITS) - 1);
    signal->theData[2] = pageId;
    signal->theData[3] = pageIndex;
    EXECUTE_DIRECT(DBTUP, GSN_TUP_DEALLOCREQ, signal, 4);
    jamEntry();
  }//if
  if (fragrecptr.p->keyLength == 0) {
    jam();
    tdlkLogicalPageIndex = operationRecPtr.p->longKeyPageIndex;
    dlkPageptr.i = operationRecPtr.p->longPagePtr;
    ptrCheckGuard(dlkPageptr, cpagesize, page8);
    deleteLongKey(signal);
  }//if
  getdirindex(signal);
  tlastPageindex = tgdiPageindex;
  lastPageptr.i = gdiPageptr.i;
  lastPageptr.p = gdiPageptr.p;
  tlastForward = ZTRUE;
  tlastContainerptr = (tlastPageindex << ZSHIFT_PLUS) - (tlastPageindex << ZSHIFT_MINUS);
  tlastContainerptr = tlastContainerptr + ZHEAD_SIZE;
  arrGuard(tlastContainerptr, 2048);
  tlastContainerhead = lastPageptr.p->word32[tlastContainerptr];
  tlastContainerlen = tlastContainerhead >> 26;
  lastPrevpageptr.i = RNIL;
  ptrNull(lastPrevpageptr);
  tlastPrevconptr = 0;
  getLastAndRemove(signal);

  delPageptr.i = operationRecPtr.p->elementPage;
  ptrCheckGuard(delPageptr, cpagesize, page8);
  tdelElementptr = operationRecPtr.p->elementPointer;
  /* --------------------------------------------------------------------------------- */
  // Here we have to take extreme care since we do not want locks to end up after the
  // log execution. Thus it is necessary to put back the element in unlocked shape.
  // We thus update the element header to ensure we log an unlocked element. We do not
  // need to restore it later since it is deleted immediately anyway.
  /* --------------------------------------------------------------------------------- */
  const Uint32 hv = operationRecPtr.p->hashvaluePart;
  const Uint32 eh = ElementHeader::setUnlocked(hv, 0);
  delPageptr.p->word32[tdelElementptr] = eh;
  if (operationRecPtr.p->elementPage == lastPageptr.i) {
    if (operationRecPtr.p->elementPointer == tlastElementptr) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*  THE LAST ELEMENT WAS THE ELEMENT TO BE DELETED. WE NEED NOT COPY IT.             */
      /* --------------------------------------------------------------------------------- */
      return;
    }//if
  }//if
  /* --------------------------------------------------------------------------------- */
  /*  THE DELETED ELEMENT IS NOT THE LAST. WE READ THE LAST ELEMENT AND OVERWRITE THE  */
  /*  DELETED ELEMENT.                                                                 */
  /* --------------------------------------------------------------------------------- */
  tdelContainerptr = operationRecPtr.p->elementContainer;
  tdelForward = operationRecPtr.p->elementIsforward;
  deleteElement(signal);
}//Dbacc::commitdelete()

/* --------------------------------------------------------------------------------- */
/* DELETE_ELEMENT                                                                    */
/*        INPUT: FRAGRECPTR, POINTER TO A FRAGMENT RECORD                            */
/*               LAST_PAGEPTR, POINTER TO THE PAGE OF THE LAST ELEMENT               */
/*               DEL_PAGEPTR, POINTER TO THE PAGE OF THE DELETED ELEMENT             */
/*               TLAST_ELEMENTPTR, ELEMENT POINTER OF THE LAST ELEMENT               */
/*               TDEL_ELEMENTPTR, ELEMENT POINTER OF THE DELETED ELEMENT             */
/*               TLAST_FORWARD, DIRECTION OF LAST ELEMENT                            */
/*               TDEL_FORWARD, DIRECTION OF DELETED ELEMENT                          */
/*               TDEL_CONTAINERPTR, CONTAINER POINTER OF DELETED ELEMENT             */
/*        DESCRIPTION: COPY LAST ELEMENT TO DELETED ELEMENT AND UPDATE UNDO LOG AND  */
/*                     UPDATE ANY ACTIVE OPERATION ON THE MOVED ELEMENT.             */
/* --------------------------------------------------------------------------------- */
void Dbacc::deleteElement(Signal* signal) 
{
  OperationrecPtr deOperationRecPtr;
  Uint32 tdeIndex;
  Uint32 tlastMoveElemptr;
  Uint32 tdelMoveElemptr;
  Uint32 guard31;

  if (tlastElementptr >= 2048)
    goto deleteElement_index_error1;
  {
    const Uint32 tdeElemhead = lastPageptr.p->word32[tlastElementptr];
    if (fragrecptr.p->createLcp == ZTRUE) {
      datapageptr.p = delPageptr.p;
      cundoinfolength = fragrecptr.p->elementLength;
      if (tdelForward == ZTRUE) {
	jam();
	cundoElemIndex = tdelElementptr;
      } else {
	jam();
	cundoElemIndex = (tdelElementptr + 1) - fragrecptr.p->elementLength;
      }//if
      undoWritingProcess(signal);
    }//if
    tlastMoveElemptr = tlastElementptr;
    tdelMoveElemptr = tdelElementptr;
    guard31 = fragrecptr.p->elementLength - 1;
    for (tdeIndex = 0; tdeIndex <= guard31; tdeIndex++) {
      dbgWord32(delPageptr, tdelMoveElemptr, lastPageptr.p->word32[tlastMoveElemptr]);
      if ((tlastMoveElemptr >= 2048) ||
	  (tdelMoveElemptr >= 2048))
	goto deleteElement_index_error2;
      delPageptr.p->word32[tdelMoveElemptr] = lastPageptr.p->word32[tlastMoveElemptr];
      tdelMoveElemptr = tdelMoveElemptr + tdelForward;
      tlastMoveElemptr = tlastMoveElemptr + tlastForward;
    }//for
    if (ElementHeader::getLocked(tdeElemhead)) {
      /* --------------------------------------------------------------------------------- */
      /* THE LAST ELEMENT IS LOCKED AND IS THUS REFERENCED BY AN OPERATION RECORD. WE NEED */
      /* TO UPDATE THE OPERATION RECORD WITH THE NEW REFERENCE TO THE ELEMENT.             */
      /* --------------------------------------------------------------------------------- */
      deOperationRecPtr.i = ElementHeader::getOpPtrI(tdeElemhead);
      ptrCheckGuard(deOperationRecPtr, coprecsize, operationrec);
      if (cundoLogActive == ZFALSE) {
	jam();
	/* --------------------------------------------------------------------------------- */
	/*       WE DO NOT BOTHER WITH THIS INFORMATION DURING EXECUTION OF THE UNDO LOG.    */
	/* --------------------------------------------------------------------------------- */
	deOperationRecPtr.p->elementPage = delPageptr.i;
	deOperationRecPtr.p->elementContainer = tdelContainerptr;
	deOperationRecPtr.p->elementPointer = tdelElementptr;
	deOperationRecPtr.p->elementIsforward = tdelForward;
      }//if
      /* --------------------------------------------------------------------------------- */
      // We need to take extreme care to not install locked records after system restart.
      // An undo of the delete will reinstall the moved record. We have to ensure that the
      // lock is removed to ensure that no such thing happen.
      /* --------------------------------------------------------------------------------- */
      Uint32 eh = ElementHeader::setUnlocked(deOperationRecPtr.p->hashvaluePart,
					     0);
      lastPageptr.p->word32[tlastElementptr] = eh;
    }//if
    return;
  }

 deleteElement_index_error1:
  arrGuard(tlastElementptr, 2048);
  return;

 deleteElement_index_error2:
  arrGuard(tdelMoveElemptr + guard31, 2048);
  arrGuard(tlastMoveElemptr, 2048);
  return;

}//Dbacc::deleteElement()

/* --------------------------------------------------------------------------------- */
/* GET_LAST_AND_REMOVE                                                               */
/*        INPUT:                                                                     */
/*               LAST_PAGEPTR       PAGE POINTER OF FIRST CONTAINER IN SEARCH OF LAST*/
/*               TLAST_CONTAINERPTR CONTAINER INDEX OF THE SAME                      */
/*               TLAST_CONTAINERHEAD CONTAINER HEADER OF THE SAME                    */
/*               TLAST_PAGEINDEX    PAGE INDEX OF THE SAME                           */
/*               TLAST_FORWARD      CONTAINER DIRECTION OF THE SAME                  */
/*               TLAST_CONTAINERLEN CONTAINER LENGTH OF THE SAME                     */
/*               LAST_PREVPAGEPTR   PAGE POINTER OF PREVIOUS CONTAINER OF THE SAME   */
/*               TLAST_PREVCONPTR   CONTAINER INDEX OF PREVIOUS CONTAINER OF THE SAME*/
/*                                                                                   */
/*       OUTPUT:                                                                     */
/*               ALL VARIABLES FROM INPUT BUT NOW CONTAINING INFO ABOUT LAST         */
/*               CONTAINER.                                                          */
/*               TLAST_ELEMENTPTR   LAST ELEMENT POINTER IN LAST CONTAINER           */
/* --------------------------------------------------------------------------------- */
void Dbacc::getLastAndRemove(Signal* signal) 
{
  DirRangePtr glrOverflowrangeptr;
  DirectoryarrayPtr glrOverflowDirptr;
  Uint32 tglrHead;
  Uint32 tglrTmp;

 GLR_LOOP_10:
  if (((tlastContainerhead >> 7) & 0x3) != 0) {
    jam();
    lastPrevpageptr.i = lastPageptr.i;
    lastPrevpageptr.p = lastPageptr.p;
    tlastPrevconptr = tlastContainerptr;
    tlastPageindex = tlastContainerhead & 0x7f;
    if (((tlastContainerhead >> 9) & 0x1) == ZFALSE) {
      jam();
      arrGuard(tlastContainerptr + 1, 2048);
      tglrTmp = lastPageptr.p->word32[tlastContainerptr + 1];
      glrOverflowrangeptr.i = fragrecptr.p->overflowdir;
      ptrCheckGuard(glrOverflowrangeptr, cdirrangesize, dirRange);
      arrGuard((tglrTmp >> 8), 256);
      glrOverflowDirptr.i = glrOverflowrangeptr.p->dirArray[tglrTmp >> 8];
      ptrCheckGuard(glrOverflowDirptr, cdirarraysize, directoryarray);
      lastPageptr.i = glrOverflowDirptr.p->pagep[tglrTmp & 0xff];
      ptrCheckGuard(lastPageptr, cpagesize, page8);
    }//if
    tlastContainerptr = (tlastPageindex << ZSHIFT_PLUS) - (tlastPageindex << ZSHIFT_MINUS);
    if (((tlastContainerhead >> 7) & 3) == ZLEFT) {
      jam();
      tlastForward = ZTRUE;
      tlastContainerptr = tlastContainerptr + ZHEAD_SIZE;
    } else if (((tlastContainerhead >> 7) & 3) == ZRIGHT) {
      jam();
      tlastForward = cminusOne;
      tlastContainerptr = ((tlastContainerptr + ZHEAD_SIZE) + ZBUF_SIZE) - ZCON_HEAD_SIZE;
    } else {
      ndbrequire(false);
      return;
    }//if
    arrGuard(tlastContainerptr, 2048);
    tlastContainerhead = lastPageptr.p->word32[tlastContainerptr];
    tlastContainerlen = tlastContainerhead >> 26;
    ndbrequire(tlastContainerlen >= ((Uint32)ZCON_HEAD_SIZE + fragrecptr.p->elementLength));
    goto GLR_LOOP_10;
  }//if
  tlastContainerlen = tlastContainerlen - fragrecptr.p->elementLength;
  if (tlastForward == ZTRUE) {
    jam();
    tlastElementptr = tlastContainerptr + tlastContainerlen;
  } else {
    jam();
    tlastElementptr = (tlastContainerptr + (ZCON_HEAD_SIZE - 1)) - tlastContainerlen;
  }//if
  rlPageptr.i = lastPageptr.i;
  rlPageptr.p = lastPageptr.p;
  trlPageindex = tlastPageindex;
  if (((tlastContainerhead >> 10) & 1) == 1) {
    /* --------------------------------------------------------------------------------- */
    /*       WE HAVE OWNERSHIP OF BOTH PARTS OF THE CONTAINER ENDS.                      */
    /* --------------------------------------------------------------------------------- */
    if (tlastContainerlen < ZDOWN_LIMIT) {
      /* --------------------------------------------------------------------------------- */
      /*       WE HAVE DECREASED THE SIZE BELOW THE DOWN LIMIT, WE MUST GIVE UP THE OTHER  */
      /*       SIDE OF THE BUFFER.                                                         */
      /* --------------------------------------------------------------------------------- */
      tlastContainerhead = tlastContainerhead ^ (1 << 10);
      trlRelCon = ZFALSE;
      if (tlastForward == ZTRUE) {
        jam();
        turlIndex = tlastContainerptr + (ZBUF_SIZE - ZCON_HEAD_SIZE);
        releaseRightlist(signal);
      } else {
        jam();
        tullIndex = tlastContainerptr - (ZBUF_SIZE - ZCON_HEAD_SIZE);
        releaseLeftlist(signal);
      }//if
    }//if
  }//if
  if (tlastContainerlen <= 2) {
    ndbrequire(tlastContainerlen == 2);
    if (lastPrevpageptr.i != RNIL) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*  THE LAST CONTAINER IS EMPTY AND IS NOT THE FIRST CONTAINER WHICH IS NOT REMOVED. */
      /*  DELETE THE LAST CONTAINER AND UPDATE THE PREVIOUS CONTAINER. ALSO PUT THIS       */
      /*  CONTAINER IN FREE CONTAINER LIST OF THE PAGE.                                    */
      /* --------------------------------------------------------------------------------- */
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        datapageptr.p = lastPrevpageptr.p;
        cundoElemIndex = tlastPrevconptr;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      ndbrequire(tlastPrevconptr < 2048);
      tglrTmp = lastPrevpageptr.p->word32[tlastPrevconptr] >> 9;
      dbgWord32(lastPrevpageptr, tlastPrevconptr, tglrTmp << 9);
      lastPrevpageptr.p->word32[tlastPrevconptr] = tglrTmp << 9;
      trlRelCon = ZTRUE;
      if (tlastForward == ZTRUE) {
        jam();
        tullIndex = tlastContainerptr;
        releaseLeftlist(signal);
      } else {
        jam();
        turlIndex = tlastContainerptr;
        releaseRightlist(signal);
      }//if
      return;
    }//if
  }//if
  tglrHead = tlastContainerhead << 6;
  tglrHead = tglrHead >> 6;
  tglrHead = tglrHead | (tlastContainerlen << 26);
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = lastPageptr.p;
    cundoElemIndex = tlastContainerptr;
    cundoinfolength = 1;
    undoWritingProcess(signal);
  }//if
  dbgWord32(lastPageptr, tlastContainerptr, tglrHead);
  arrGuard(tlastContainerptr, 2048);
  lastPageptr.p->word32[tlastContainerptr] = tglrHead;
}//Dbacc::getLastAndRemove()

/* --------------------------------------------------------------------------------- */
/* RELEASE_LEFTLIST                                                                  */
/*       INPUT:                                                                      */
/*               RL_PAGEPTR              PAGE POINTER OF CONTAINER TO BE RELEASED    */
/*               TRL_PAGEINDEX           PAGE INDEX OF CONTAINER TO BE RELEASED      */
/*               TURL_INDEX              INDEX OF CONTAINER TO BE RELEASED           */
/*               TRL_REL_CON             TRUE IF CONTAINER RELEASED OTHERWISE ONLY   */
/*                                       A PART IS RELEASED.                         */
/*                                                                                   */
/*       OUTPUT:                                                                     */
/*               NONE                                                                */
/*                                                                                   */
/*          THE FREE LIST OF LEFT FREE BUFFER IN THE PAGE WILL BE UPDATE             */
/*     TULL_INDEX IS INDEX TO THE FIRST WORD IN THE LEFT SIDE OF THE BUFFER          */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseLeftlist(Signal* signal) 
{
  Uint32 tullTmp;
  Uint32 tullTmp1;

  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = rlPageptr.p;
    cundoElemIndex = tullIndex;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    cundoElemIndex = ZPOS_EMPTY_LIST;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       IF A CONTAINER IS RELEASED AND NOT ONLY A PART THEN WE HAVE TO REMOVE IT    */
  /*       FROM THE LIST OF USED CONTAINERS IN THE PAGE. THIS IN ORDER TO ENSURE THAT  */
  /*       WE CAN FIND ALL LOCKED ELEMENTS DURING LOCAL CHECKPOINT.                    */
  /* --------------------------------------------------------------------------------- */
  if (trlRelCon == ZTRUE) {
    arrGuard(tullIndex, 2048);
    trlHead = rlPageptr.p->word32[tullIndex];
    trlNextused = (trlHead >> 11) & 0x7f;
    trlPrevused = (trlHead >> 18) & 0x7f;
    if (trlNextused < ZEMPTYLIST) {
      jam();
      tullTmp1 = (trlNextused << ZSHIFT_PLUS) - (trlNextused << ZSHIFT_MINUS);
      tullTmp1 = tullTmp1 + ZHEAD_SIZE;
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        cundoElemIndex = tullTmp1;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      tullTmp = rlPageptr.p->word32[tullTmp1] & 0xfe03ffff;
      dbgWord32(rlPageptr, tullTmp1, tullTmp | (trlPrevused << 18));
      rlPageptr.p->word32[tullTmp1] = tullTmp | (trlPrevused << 18);
    } else {
      ndbrequire(trlNextused == ZEMPTYLIST);
      jam();
    }//if
    if (trlPrevused < ZEMPTYLIST) {
      jam();
      tullTmp1 = (trlPrevused << ZSHIFT_PLUS) - (trlPrevused << ZSHIFT_MINUS);
      tullTmp1 = tullTmp1 + ZHEAD_SIZE;
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        cundoElemIndex = tullTmp1;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      tullTmp = rlPageptr.p->word32[tullTmp1] & 0xfffc07ff;
      dbgWord32(rlPageptr, tullTmp1, tullTmp | (trlNextused << 11));
      rlPageptr.p->word32[tullTmp1] = tullTmp | (trlNextused << 11);
    } else {
      ndbrequire(trlPrevused == ZEMPTYLIST);
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WE ARE FIRST IN THE LIST AND THUS WE NEED TO UPDATE THE FIRST POINTER.      */
      /* --------------------------------------------------------------------------------- */
      tullTmp = rlPageptr.p->word32[ZPOS_EMPTY_LIST] & 0xc07fffff;
      dbgWord32(rlPageptr, ZPOS_EMPTY_LIST, tullTmp | (trlNextused << 23));
      rlPageptr.p->word32[ZPOS_EMPTY_LIST] = tullTmp | (trlNextused << 23);
    }//if
  }//if
  dbgWord32(rlPageptr, tullIndex + 1, ZEMPTYLIST);
  arrGuard(tullIndex + 1, 2048);
  rlPageptr.p->word32[tullIndex + 1] = ZEMPTYLIST;
  tullTmp1 = (rlPageptr.p->word32[ZPOS_EMPTY_LIST] >> 7) & 0x7f;
  dbgWord32(rlPageptr, tullIndex, tullTmp1);
  arrGuard(tullIndex, 2048);
  rlPageptr.p->word32[tullIndex] = tullTmp1;
  if (tullTmp1 < ZEMPTYLIST) {
    jam();
    tullTmp1 = (tullTmp1 << ZSHIFT_PLUS) - (tullTmp1 << ZSHIFT_MINUS);
    tullTmp1 = (tullTmp1 + ZHEAD_SIZE) + 1;
    if (fragrecptr.p->createLcp == ZTRUE) {
      jam();
      cundoElemIndex = tullTmp1;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(rlPageptr, tullTmp1, trlPageindex);
    rlPageptr.p->word32[tullTmp1] = trlPageindex;	/* UPDATES PREV POINTER IN THE NEXT FREE */
  } else {
    ndbrequire(tullTmp1 == ZEMPTYLIST);
  }//if
  tullTmp = rlPageptr.p->word32[ZPOS_EMPTY_LIST];
  tullTmp = (((tullTmp >> 14) << 14) | (trlPageindex << 7)) | (tullTmp & 0x7f);
  dbgWord32(rlPageptr, ZPOS_EMPTY_LIST, tullTmp);
  rlPageptr.p->word32[ZPOS_EMPTY_LIST] = tullTmp;
  dbgWord32(rlPageptr, ZPOS_ALLOC_CONTAINERS, rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] - 1);
  rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] = rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] - 1;
  ndbrequire(rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] <= ZNIL);
  if (((rlPageptr.p->word32[ZPOS_EMPTY_LIST] >> ZPOS_PAGE_TYPE_BIT) & 3) == 1) {
    jam();
    colPageptr.i = rlPageptr.i;
    colPageptr.p = rlPageptr.p;
    ptrCheck(colPageptr, cpagesize, page8);
    checkoverfreelist(signal);
  }//if
}//Dbacc::releaseLeftlist()

/* --------------------------------------------------------------------------------- */
/* RELEASE_RIGHTLIST                                                                 */
/*       INPUT:                                                                      */
/*               RL_PAGEPTR              PAGE POINTER OF CONTAINER TO BE RELEASED    */
/*               TRL_PAGEINDEX           PAGE INDEX OF CONTAINER TO BE RELEASED      */
/*               TURL_INDEX              INDEX OF CONTAINER TO BE RELEASED           */
/*               TRL_REL_CON             TRUE IF CONTAINER RELEASED OTHERWISE ONLY   */
/*                                       A PART IS RELEASED.                         */
/*                                                                                   */
/*       OUTPUT:                                                                     */
/*               NONE                                                                */
/*                                                                                   */
/*         THE FREE LIST OF RIGHT FREE BUFFER IN THE PAGE WILL BE UPDATE.            */
/*         TURL_INDEX IS INDEX TO THE FIRST WORD IN THE RIGHT SIDE OF                */
/*         THE BUFFER, WHICH IS THE LAST WORD IN THE BUFFER.                         */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseRightlist(Signal* signal) 
{
  Uint32 turlTmp1;
  Uint32 turlTmp;

  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = rlPageptr.p;
    cundoElemIndex = turlIndex;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    cundoElemIndex = ZPOS_EMPTY_LIST;
    cundoinfolength = 2;
    undoWritingProcess(signal);
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       IF A CONTAINER IS RELEASED AND NOT ONLY A PART THEN WE HAVE TO REMOVE IT    */
  /*       FROM THE LIST OF USED CONTAINERS IN THE PAGE. THIS IN ORDER TO ENSURE THAT  */
  /*       WE CAN FIND ALL LOCKED ELEMENTS DURING LOCAL CHECKPOINT.                    */
  /* --------------------------------------------------------------------------------- */
  if (trlRelCon == ZTRUE) {
    jam();
    arrGuard(turlIndex, 2048);
    trlHead = rlPageptr.p->word32[turlIndex];
    trlNextused = (trlHead >> 11) & 0x7f;
    trlPrevused = (trlHead >> 18) & 0x7f;
    if (trlNextused < ZEMPTYLIST) {
      jam();
      turlTmp1 = (trlNextused << ZSHIFT_PLUS) - (trlNextused << ZSHIFT_MINUS);
      turlTmp1 = turlTmp1 + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        cundoElemIndex = turlTmp1;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      turlTmp = rlPageptr.p->word32[turlTmp1] & 0xfe03ffff;
      dbgWord32(rlPageptr, turlTmp1, turlTmp | (trlPrevused << 18));
      rlPageptr.p->word32[turlTmp1] = turlTmp | (trlPrevused << 18);
    } else {
      ndbrequire(trlNextused == ZEMPTYLIST);
      jam();
    }//if
    if (trlPrevused < ZEMPTYLIST) {
      jam();
      turlTmp1 = (trlPrevused << ZSHIFT_PLUS) - (trlPrevused << ZSHIFT_MINUS);
      turlTmp1 = turlTmp1 + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      if (fragrecptr.p->createLcp == ZTRUE) {
        jam();
        cundoElemIndex = turlTmp1;
        cundoinfolength = 1;
        undoWritingProcess(signal);
      }//if
      turlTmp = rlPageptr.p->word32[turlTmp1] & 0xfffc07ff;
      dbgWord32(rlPageptr, turlTmp1, turlTmp | (trlNextused << 11));
      rlPageptr.p->word32[turlTmp1] = turlTmp | (trlNextused << 11);
    } else {
      ndbrequire(trlPrevused == ZEMPTYLIST);
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WE ARE FIRST IN THE LIST AND THUS WE NEED TO UPDATE THE FIRST POINTER       */
      /*       OF THE RIGHT CONTAINER LIST.                                                */
      /* --------------------------------------------------------------------------------- */
      turlTmp = rlPageptr.p->word32[ZPOS_EMPTY_LIST] & 0xff80ffff;
      dbgWord32(rlPageptr, ZPOS_EMPTY_LIST, turlTmp | (trlNextused << 16));
      rlPageptr.p->word32[ZPOS_EMPTY_LIST] = turlTmp | (trlNextused << 16);
    }//if
  }//if
  dbgWord32(rlPageptr, turlIndex + 1, ZEMPTYLIST);
  arrGuard(turlIndex + 1, 2048);
  rlPageptr.p->word32[turlIndex + 1] = ZEMPTYLIST;
  turlTmp1 = rlPageptr.p->word32[ZPOS_EMPTY_LIST] & 0x7f;
  dbgWord32(rlPageptr, turlIndex, turlTmp1);
  arrGuard(turlIndex, 2048);
  rlPageptr.p->word32[turlIndex] = turlTmp1;
  if (turlTmp1 < ZEMPTYLIST) {
    jam();
    turlTmp = (turlTmp1 << ZSHIFT_PLUS) - (turlTmp1 << ZSHIFT_MINUS);
    turlTmp = turlTmp + ((ZHEAD_SIZE + ZBUF_SIZE) - (ZCON_HEAD_SIZE - 1));
    if (fragrecptr.p->createLcp == ZTRUE) {
      jam();
      cundoElemIndex = turlTmp;
      cundoinfolength = 1;
      undoWritingProcess(signal);
    }//if
    dbgWord32(rlPageptr, turlTmp, trlPageindex);
    rlPageptr.p->word32[turlTmp] = trlPageindex;	/* UPDATES PREV POINTER IN THE NEXT FREE */
  } else {
    ndbrequire(turlTmp1 == ZEMPTYLIST);
  }//if
  turlTmp = rlPageptr.p->word32[ZPOS_EMPTY_LIST];
  dbgWord32(rlPageptr, ZPOS_EMPTY_LIST, ((turlTmp >> 7) << 7) | trlPageindex);
  rlPageptr.p->word32[ZPOS_EMPTY_LIST] = ((turlTmp >> 7) << 7) | trlPageindex;
  dbgWord32(rlPageptr, ZPOS_ALLOC_CONTAINERS, rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] - 1);
  rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] = rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] - 1;
  ndbrequire(rlPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] <= ZNIL);
  if (((rlPageptr.p->word32[ZPOS_EMPTY_LIST] >> ZPOS_PAGE_TYPE_BIT) & 3) == 1) {
    jam();
    colPageptr.i = rlPageptr.i;
    colPageptr.p = rlPageptr.p;
    checkoverfreelist(signal);
  }//if
}//Dbacc::releaseRightlist()

/* --------------------------------------------------------------------------------- */
/* CHECKOVERFREELIST                                                                 */
/*        INPUT: COL_PAGEPTR, POINTER OF AN OVERFLOW PAGE RECORD.                    */
/*        DESCRIPTION: CHECKS IF THE PAGE HAVE TO PUT IN FREE LIST OF OVER FLOW      */
/*                     PAGES. WHEN IT HAVE TO, AN OVERFLOW REC PTR WILL BE ALLOCATED */
/*                     TO KEEP NFORMATION  ABOUT THE PAGE.                           */
/* --------------------------------------------------------------------------------- */
void Dbacc::checkoverfreelist(Signal* signal) 
{
  Uint32 tcolTmp;

  if (fragrecptr.p->loadingFlag == ZFALSE) {
    tcolTmp = colPageptr.p->word32[ZPOS_ALLOC_CONTAINERS];
    if (tcolTmp <= ZFREE_LIMIT) {
      if (tcolTmp == 0) {
        jam();
        ropPageptr = colPageptr;
        releaseOverpage(signal);
      } else {
        jam();
        if (colPageptr.p->word32[ZPOS_OVERFLOWREC] == RNIL) {
          ndbrequire(cfirstfreeoverrec != RNIL);
          jam();
          seizeOverRec(signal);
          sorOverflowRecPtr.p->dirindex = colPageptr.p->word32[ZPOS_PAGE_ID];
          sorOverflowRecPtr.p->overpage = colPageptr.i;
          dbgWord32(colPageptr, ZPOS_OVERFLOWREC, sorOverflowRecPtr.i);
          colPageptr.p->word32[ZPOS_OVERFLOWREC] = sorOverflowRecPtr.i;
          porOverflowRecPtr = sorOverflowRecPtr;
          putOverflowRecInFrag(signal);
        }//if
      }//if
    }//if
  }//if
}//Dbacc::checkoverfreelist()

/* --------------------------------------------------------------------------------- */
/* RELEASE_LONG_PAGE                                                                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseLongPage(Signal* signal) 
{
  DirRangePtr rlpOverflowrangeptr;
  DirectoryarrayPtr rlpOverflowDirptr;
  Uint32 trlpTmp1;
  Uint32 trlpTmp2;
  Uint32 trlpTmp3;

  jam();
  seizeOverRec(signal);
  sorOverflowRecPtr.p->dirindex = rlopPageptr.p->word32[ZPOS_PAGE_ID];
  sorOverflowRecPtr.p->overpage = RNIL;
  priOverflowRecPtr = sorOverflowRecPtr;
  putRecInFreeOverdir(signal);
  trlpTmp1 = sorOverflowRecPtr.p->dirindex;
  rlpOverflowrangeptr.i = fragrecptr.p->overflowdir;
  trlpTmp2 = trlpTmp1 >> 8;
  trlpTmp3 = trlpTmp1 & 0xff;
  ptrCheckGuard(rlpOverflowrangeptr, cdirrangesize, dirRange);
  arrGuard(trlpTmp2, 256);
  rlpOverflowDirptr.i = rlpOverflowrangeptr.p->dirArray[trlpTmp2];
  ptrCheckGuard(rlpOverflowDirptr, cdirarraysize, directoryarray);
  rlpOverflowDirptr.p->pagep[trlpTmp3] = RNIL;

  if (cundoLogActive != ZTRUE) {
    // Remove from page array.
    trfpArrayPos = rlopPageptr.p->word32[ZPOS_ARRAY_POS];
    rfpPageptr = rlopPageptr;
    removeFromPageArrayList(signal);
  }

  // Reset page header
  iloPageptr = rlopPageptr;
  tiloIndex = rlopPageptr.p->word32[ZPOS_PAGE_ID];
  initLongOverpage(signal);

  rpPageptr = rlopPageptr;
  releasePage(signal);
}//Dbacc::releaseLongPage()


/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/*                                                                           */
/*       END OF DELETE MODULE                                                */
/*                                                                           */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/*                                                                           */
/*       COMMIT AND ABORT MODULE                                             */
/*                                                                           */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/* ABORT_OPERATION                                                           */
/*DESCRIPTION: AN OPERATION RECORD CAN BE IN A LOCK QUEUE OF AN ELEMENT OR   */
/*OWNS THE LOCK. BY THIS SUBROUTINE THE LOCK STATE OF THE OPERATION WILL     */
/*BE CHECKED. THE OPERATION RECORD WILL BE REMOVED FROM THE QUEUE IF IT      */
/*BELONGED TO ANY ONE, OTHERWISE THE ELEMENT HEAD WILL BE UPDATED.           */
/* ------------------------------------------------------------------------- */
void Dbacc::abortOperation(Signal* signal) 
{
  OperationrecPtr aboOperRecPtr;
  OperationrecPtr TaboOperRecPtr;
  Page8Ptr aboPageidptr;
  Uint32 taboElementptr;
  Uint32 tmp2Olq;

  if (operationRecPtr.p->lockOwner == ZTRUE) {
    takeOutLockOwnersList(signal, operationRecPtr);
    if (operationRecPtr.p->insertIsDone == ZTRUE) { 
      jam();
      operationRecPtr.p->elementIsDisappeared = ZTRUE;
    }//if
    if ((operationRecPtr.p->nextParallelQue != RNIL) ||
        (operationRecPtr.p->nextSerialQue != RNIL)) {
      jam();
      releaselock(signal);
    } else {
      /* --------------------------------------------------------------------------------- */
      /* WE ARE OWNER OF THE LOCK AND NO OTHER OPERATIONS ARE QUEUED. IF INSERT OR STANDBY */
      /* WE DELETE THE ELEMENT OTHERWISE WE REMOVE THE LOCK FROM THE ELEMENT.              */
      /* --------------------------------------------------------------------------------- */
      if (operationRecPtr.p->elementIsDisappeared == ZFALSE) {
        jam();
        taboElementptr = operationRecPtr.p->elementPointer;
        aboPageidptr.i = operationRecPtr.p->elementPage;
        tmp2Olq = ElementHeader::setUnlocked(operationRecPtr.p->hashvaluePart,
					     operationRecPtr.p->scanBits);
        ptrCheckGuard(aboPageidptr, cpagesize, page8);
        dbgWord32(aboPageidptr, taboElementptr, tmp2Olq);
        arrGuard(taboElementptr, 2048);
        aboPageidptr.p->word32[taboElementptr] = tmp2Olq;
        return;
      } else {
        jam();
        commitdelete(signal, false);
      }//if
    }//if
  } else {
    /* --------------------------------------------------------------- */
    // We are not the lock owner.
    /* --------------------------------------------------------------- */
    jam();
    takeOutFragWaitQue(signal);
    if (operationRecPtr.p->prevParallelQue != RNIL) {
      jam();
      /* ---------------------------------------------------------------------------------- */
      /* SINCE WE ARE NOT QUEUE LEADER WE NEED NOT CONSIDER IF THE ELEMENT IS TO BE DELETED.*/
      /* We will simply remove it from the parallel list without any other rearrangements.  */
      /* ---------------------------------------------------------------------------------- */
      aboOperRecPtr.i = operationRecPtr.p->prevParallelQue;
      ptrCheckGuard(aboOperRecPtr, coprecsize, operationrec);
      aboOperRecPtr.p->nextParallelQue = operationRecPtr.p->nextParallelQue;
      if (operationRecPtr.p->nextParallelQue != RNIL) {
        jam();
        aboOperRecPtr.i = operationRecPtr.p->nextParallelQue;
        ptrCheckGuard(aboOperRecPtr, coprecsize, operationrec);
        aboOperRecPtr.p->prevParallelQue = operationRecPtr.p->prevParallelQue;
      }//if
    } else if (operationRecPtr.p->prevSerialQue != RNIL) {
      /* ------------------------------------------------------------------------- */
      // We are not in the parallel queue owning the lock. Thus we are in another parallel
      // queue longer down in the serial queue. We are however first since prevParallelQue
      // == RNIL.
      /* ------------------------------------------------------------------------- */
      if (operationRecPtr.p->nextParallelQue != RNIL) {
        jam();
	/* ------------------------------------------------------------------------- */
	// We have an operation in the queue after us. We simply rearrange this parallel queue.
	// The new leader of this parallel queue will be operation in the serial queue.
	/* ------------------------------------------------------------------------- */
        aboOperRecPtr.i = operationRecPtr.p->nextParallelQue;
        ptrCheckGuard(aboOperRecPtr, coprecsize, operationrec);
        aboOperRecPtr.p->nextSerialQue = operationRecPtr.p->nextSerialQue;
        aboOperRecPtr.p->prevSerialQue = operationRecPtr.p->prevSerialQue;
        aboOperRecPtr.p->prevParallelQue = RNIL; // Queue Leader
        if (operationRecPtr.p->nextSerialQue != RNIL) {
          jam();
          TaboOperRecPtr.i = operationRecPtr.p->nextSerialQue;
          ptrCheckGuard(TaboOperRecPtr, coprecsize, operationrec);
          TaboOperRecPtr.p->prevSerialQue = aboOperRecPtr.i;
        }//if
        TaboOperRecPtr.i = operationRecPtr.p->prevSerialQue;
        ptrCheckGuard(TaboOperRecPtr, coprecsize, operationrec);
        TaboOperRecPtr.p->nextSerialQue = aboOperRecPtr.i;
      } else {
        jam();
	/* ------------------------------------------------------------------------- */
	// We are the only operation in this parallel queue. We will thus shrink the serial
	// queue.
	/* ------------------------------------------------------------------------- */
        aboOperRecPtr.i = operationRecPtr.p->prevSerialQue;
        ptrCheckGuard(aboOperRecPtr, coprecsize, operationrec);
        aboOperRecPtr.p->nextSerialQue = operationRecPtr.p->nextSerialQue;
        if (operationRecPtr.p->nextSerialQue != RNIL) {
          jam();
          aboOperRecPtr.i = operationRecPtr.p->nextSerialQue;
          ptrCheckGuard(aboOperRecPtr, coprecsize, operationrec);
          aboOperRecPtr.p->prevSerialQue = operationRecPtr.p->prevSerialQue;
        }//if
      }//if
    }//if
  }//if
  /* ------------------------------------------------------------------------- */
  // If prevParallelQue = RNIL and prevSerialQue = RNIL and we are not owner of the
  // lock then we cannot be in any lock queue at all.
  /* ------------------------------------------------------------------------- */
}//Dbacc::abortOperation()

void Dbacc::commitDeleteCheck()
{
  OperationrecPtr opPtr;
  OperationrecPtr lastOpPtr;
  OperationrecPtr deleteOpPtr;
  bool elementDeleted = false;
  bool deleteCheckOngoing = true;
  Uint32 hashValue = 0;
  lastOpPtr = operationRecPtr;
  opPtr.i = operationRecPtr.p->nextParallelQue;
  while (opPtr.i != RNIL) {
    jam();
    ptrCheckGuard(opPtr, coprecsize, operationrec);
    lastOpPtr = opPtr;
    opPtr.i = opPtr.p->nextParallelQue;
  }//while
  deleteOpPtr = lastOpPtr;
  do {
    if (deleteOpPtr.p->operation == ZDELETE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /* IF THE CURRENT OPERATION TO BE COMMITTED IS A DELETE OPERATION DUE TO A           */
      /* SCAN-TAKEOVER THE ACTUAL DELETE WILL BE PERFORMED BY THE PREVIOUS OPERATION (SCAN)*/
      /* IN THE PARALLEL QUEUE WHICH OWNS THE LOCK.THE PROBLEM IS THAT THE SCAN OPERATION  */
      /* DOES NOT HAVE A HASH VALUE ASSIGNED TO IT SO WE COPY IT FROM THIS OPERATION.      */
      /*                                                                                   */
      /* WE ASSUME THAT THIS SOLUTION WILL WORK BECAUSE THE ONLY WAY A SCAN CAN PERFORM    */
      /* A DELETE IS BY BEING FOLLOWED BY A NORMAL DELETE-OPERATION THAT HAS A HASH VALUE. */
      /* --------------------------------------------------------------------------------- */
      hashValue = deleteOpPtr.p->hashValue;
      elementDeleted = true;
      deleteCheckOngoing = false;
    } else if ((deleteOpPtr.p->operation == ZREAD) ||
               (deleteOpPtr.p->operation == ZSCAN_OP)) {
      /* --------------------------------------------------------------------------------- */
      /* We are trying to find out whether the commit will in the end delete the tuple.    */
      /* Normally the delete will be the last operation in the list of operations on this  */
      /* It is however possible to issue reads and scans in the same savepoint as the      */
      /* delete operation was issued and these can end up after the delete in the list of  */
      /* operations in the parallel queue. Thus if we discover a read or a scan we have to */
      /* continue scanning the list looking for a delete operation.                        */
      /* --------------------------------------------------------------------------------- */
      deleteOpPtr.i = deleteOpPtr.p->prevParallelQue;
      if (deleteOpPtr.i == RNIL) {
        jam();
        deleteCheckOngoing = false;
      } else {
        jam();
        ptrCheckGuard(deleteOpPtr, coprecsize, operationrec);
      }//if
    } else {
      jam();
      /* --------------------------------------------------------------------------------- */
      /* Finding an UPDATE or INSERT before finding a DELETE means we cannot be deleting   */
      /* as the end result of this transaction.                                            */
      /* --------------------------------------------------------------------------------- */
      deleteCheckOngoing = false;
    }//if
  } while (deleteCheckOngoing);
  opPtr = lastOpPtr;
  do {
    jam();
    opPtr.p->commitDeleteCheckFlag = ZTRUE;
    if (elementDeleted) {
      jam();
      opPtr.p->elementIsDisappeared = ZTRUE;
      opPtr.p->hashValue = hashValue;
    }//if
    opPtr.i = opPtr.p->prevParallelQue;
    if (opPtr.i == RNIL) {
      jam();
      break;
    }//if
    ptrCheckGuard(opPtr, coprecsize, operationrec);
  } while (true);
}//Dbacc::commitDeleteCheck()

/* ------------------------------------------------------------------------- */
/* COMMIT_OPERATION                                                          */
/* INPUT: OPERATION_REC_PTR, POINTER TO AN OPERATION RECORD                  */
/* DESCRIPTION: THE OPERATION RECORD WILL BE TAKE OUT OF ANY LOCK QUEUE.     */
/*         IF IT OWNS THE ELEMENT LOCK. HEAD OF THE ELEMENT WILL BE UPDATED. */
/* ------------------------------------------------------------------------- */
void Dbacc::commitOperation(Signal* signal) 
{
  OperationrecPtr tolqTmpPtr;
  Page8Ptr coPageidptr;
  Uint32 tcoElementptr;
  Uint32 tmp2Olq;

  if ((operationRecPtr.p->commitDeleteCheckFlag == ZFALSE) &&
      (operationRecPtr.p->operation != ZSCAN_OP)) {
    jam();
    /*  This method is used to check whether the end result of the transaction
        will be to delete the tuple. In this case all operation will be marked
        with elementIsDisappeared = true to ensure that the last operation
        committed will remove the tuple. We only run this once per transaction
        (commitDeleteCheckFlag = true if performed earlier) and we don't
        execute this code when committing a scan operation since committing
        a scan operation only means that the scan is continuing and the scan
        lock is released.
    */
    commitDeleteCheck();
  }//if
  if (operationRecPtr.p->lockOwner == ZTRUE) {
    takeOutLockOwnersList(signal, operationRecPtr);
    if ((operationRecPtr.p->nextParallelQue == RNIL) &&
        (operationRecPtr.p->nextSerialQue == RNIL) &&
        (operationRecPtr.p->elementIsDisappeared == ZFALSE)) {
      /* 
       This is the normal path through the commit for operations owning the
       lock without any queues and not a delete operation.
      */
      coPageidptr.i = operationRecPtr.p->elementPage;
      tcoElementptr = operationRecPtr.p->elementPointer;
      tmp2Olq = ElementHeader::setUnlocked(operationRecPtr.p->hashvaluePart,
					   operationRecPtr.p->scanBits);   
      ptrCheckGuard(coPageidptr, cpagesize, page8);
      dbgWord32(coPageidptr, tcoElementptr, tmp2Olq);
      arrGuard(tcoElementptr, 2048);
      coPageidptr.p->word32[tcoElementptr] = tmp2Olq;
      return;
    } else if ((operationRecPtr.p->nextParallelQue != RNIL) ||
               (operationRecPtr.p->nextSerialQue != RNIL)) {
      jam();
      /*
       The case when there is a queue lined up.
       Release the lock and pass it to the next operation lined up.
      */
      releaselock(signal);
      return;
    } else {
      jam();
      /*
       No queue and elementIsDisappeared is true. We perform the actual delete
       operation.
      */
      commitdelete(signal, false);
      return;
    }//if
  } else {
    /*
     THE OPERATION DOES NOT OWN THE LOCK. IT MUST BE IN A LOCK QUEUE OF THE
     ELEMENT.
    */
    ndbrequire(operationRecPtr.p->prevParallelQue != RNIL);
    jam();
    tolqTmpPtr.i = operationRecPtr.p->prevParallelQue;
    ptrCheckGuard(tolqTmpPtr, coprecsize, operationrec);
    tolqTmpPtr.p->nextParallelQue = operationRecPtr.p->nextParallelQue;
    if (operationRecPtr.p->nextParallelQue != RNIL) {
      jam();
      tolqTmpPtr.i = operationRecPtr.p->nextParallelQue;
      ptrCheckGuard(tolqTmpPtr, coprecsize, operationrec);
      tolqTmpPtr.p->prevParallelQue = operationRecPtr.p->prevParallelQue;
    }//if
  }//if
}//Dbacc::commitOperation()

/* ------------------------------------------------------------------------- */
/* RELEASELOCK                                                               */
/*          RESETS LOCK OF AN ELEMENT.                                       */
/*          INFORMATION ABOUT THE ELEMENT IS SAVED IN THE OPERATION RECORD   */
/*          THESE INFORMATION IS USED TO UPDATE HEADER OF THE ELEMENT        */
/* ------------------------------------------------------------------------- */
void Dbacc::releaselock(Signal* signal) 
{
  OperationrecPtr rloOperPtr;
  OperationrecPtr trlOperPtr;
  OperationrecPtr trlTmpOperPtr;
  Uint32 TelementIsDisappeared;

  trlOperPtr.i = RNIL;
  if (operationRecPtr.p->nextParallelQue != RNIL) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /* NEXT OPERATION TAKES OVER THE LOCK. We will simply move the info from the leader  */
    // to the new queue leader.
    /* --------------------------------------------------------------------------------- */
    trlOperPtr.i = operationRecPtr.p->nextParallelQue;
    ptrCheckGuard(trlOperPtr, coprecsize, operationrec);
    copyInOperPtr = trlOperPtr;
    copyOperPtr = operationRecPtr;
    copyOpInfo(signal);
    trlOperPtr.p->prevParallelQue = RNIL;
    if (operationRecPtr.p->nextSerialQue != RNIL) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /* THERE IS A SERIAL QUEUE. MOVE IT FROM RELEASED OP REC TO THE NEW LOCK OWNER.      */
      /* --------------------------------------------------------------------------------- */
      trlOperPtr.p->nextSerialQue = operationRecPtr.p->nextSerialQue;
      trlTmpOperPtr.i = trlOperPtr.p->nextSerialQue;
      ptrCheckGuard(trlTmpOperPtr, coprecsize, operationrec);
      trlTmpOperPtr.p->prevSerialQue = trlOperPtr.i;
    }//if
    /* --------------------------------------------------------------------------------- */
    /*       SINCE THERE ARE STILL ITEMS IN THE PARALLEL QUEUE WE NEED NOT WORRY ABOUT   */
    /*       STARTING QUEUED OPERATIONS. THUS WE CAN END HERE.                           */
    /* --------------------------------------------------------------------------------- */
  } else {
    ndbrequire(operationRecPtr.p->nextSerialQue != RNIL);
    jam();
    /* --------------------------------------------------------------------------------- */
    /* THE PARALLEL QUEUE IS EMPTY AND THE SERIAL QUEUE IS NOT EMPTY. WE NEED TO         */
    /* REARRANGE LISTS AND START A NUMBER OF OPERATIONS.                                 */
    /* --------------------------------------------------------------------------------- */
    trlOperPtr.i = operationRecPtr.p->nextSerialQue;
    ptrCheckGuard(trlOperPtr, coprecsize, operationrec);
    copyOperPtr = operationRecPtr;
    copyInOperPtr = trlOperPtr;
    copyOpInfo(signal);
    trlOperPtr.p->prevSerialQue = RNIL;
    ndbrequire(trlOperPtr.p->prevParallelQue == RNIL);
    /* --------------------------------------------------------------------------------- */
    /*       WE HAVE MOVED TO THE NEXT PARALLEL QUEUE. WE MUST START ALL OF THOSE        */
    /*       OPERATIONS WHICH UP TILL NOW HAVE BEEN QUEUED WAITING FOR THE LOCK.         */
    /* --------------------------------------------------------------------------------- */
    rloOperPtr = operationRecPtr;
    trlTmpOperPtr = trlOperPtr;
    TelementIsDisappeared = trlOperPtr.p->elementIsDisappeared;
    Uint32 ThashValue = trlOperPtr.p->hashValue;
    do {
      /* --------------------------------------------------------------------------------- */
      // Ensure that all operations in the queue are assigned with the elementIsDisappeared
      // to ensure that the element is removed after a previous delete. An insert does
      // however revert this decision since the element is put back again. Local checkpoints
      // complicate life here since they do not execute the next operation but simply change
      // the state on the operation. We need to set-up the variable elementIsDisappeared
      // properly even when local checkpoints and inserts/writes after deletes occur.
      /* --------------------------------------------------------------------------------- */
      trlTmpOperPtr.p->elementIsDisappeared = TelementIsDisappeared;
      if (TelementIsDisappeared == ZTRUE) {
	/* --------------------------------------------------------------------------------- */
	// If the elementIsDisappeared is set then we know that the hashValue is also set
	// since it always originates from a committing abort or a aborting insert. Scans
	// do not initialise the hashValue and must have this value initialised if they are
	// to successfully commit the delete.
	/* --------------------------------------------------------------------------------- */
        jam();
        trlTmpOperPtr.p->hashValue = ThashValue;
      }//if
      trlTmpOperPtr.p->localdata[0] = trlOperPtr.p->localdata[0];
      trlTmpOperPtr.p->localdata[1] = trlOperPtr.p->localdata[1];
      /* --------------------------------------------------------------------------------- */
      // Restart the queued operation.
      /* --------------------------------------------------------------------------------- */
      operationRecPtr = trlTmpOperPtr;
      TelementIsDisappeared = executeNextOperation(signal);
      ThashValue = operationRecPtr.p->hashValue;
      if (trlTmpOperPtr.p->nextParallelQue != RNIL) {
        jam();
	/* --------------------------------------------------------------------------------- */
	// We will continue with the next operation in the parallel queue and start this as
	// well.
	/* --------------------------------------------------------------------------------- */
        trlTmpOperPtr.i = trlTmpOperPtr.p->nextParallelQue;
        ptrCheckGuard(trlTmpOperPtr, coprecsize, operationrec);
      } else {
        jam();
        break;
      }//if
    } while (1);
    operationRecPtr = rloOperPtr;
  }//if

  // Insert the next op into the lock owner list
  insertLockOwnersList(signal, trlOperPtr);
  return;
}//Dbacc::releaselock()

/* --------------------------------------------------------------------------------- */
/* COPY_OP_INFO                                                                      */
/*        INPUT: COPY_IN_OPER_PTR AND COPY_OPER_PTR.                                 */
/*        DESCRIPTION:INFORMATION ABOUT THE ELEMENT WILL BE MOVED FROM  OPERATION    */
/*                      REC TO QUEUE OP REC. QUE OP REC TAKES OVER THE LOCK.         */
/* --------------------------------------------------------------------------------- */
void Dbacc::copyOpInfo(Signal* signal) 
{
  Page8Ptr coiPageidptr;

  copyInOperPtr.p->elementPage = copyOperPtr.p->elementPage;
  copyInOperPtr.p->elementIsforward = copyOperPtr.p->elementIsforward;
  copyInOperPtr.p->elementContainer = copyOperPtr.p->elementContainer;
  copyInOperPtr.p->elementPointer = copyOperPtr.p->elementPointer;
  copyInOperPtr.p->scanBits = copyOperPtr.p->scanBits;
  copyInOperPtr.p->hashvaluePart = copyOperPtr.p->hashvaluePart;
  copyInOperPtr.p->elementIsDisappeared = copyOperPtr.p->elementIsDisappeared;
  if (copyInOperPtr.p->elementIsDisappeared == ZTRUE) {
    /* --------------------------------------------------------------------------------- */
    // If the elementIsDisappeared is set then we know that the hashValue is also set
    // since it always originates from a committing abort or a aborting insert. Scans
    // do not initialise the hashValue and must have this value initialised if they are
    // to successfully commit the delete.
    /* --------------------------------------------------------------------------------- */
    jam();
    copyInOperPtr.p->hashValue = copyOperPtr.p->hashValue;
  }//if
  coiPageidptr.i = copyOperPtr.p->elementPage;
  ptrCheckGuard(coiPageidptr, cpagesize, page8);
  const Uint32 tmp = ElementHeader::setLocked(copyInOperPtr.i);
  dbgWord32(coiPageidptr, copyOperPtr.p->elementPointer, tmp);
  arrGuard(copyOperPtr.p->elementPointer, 2048);
  coiPageidptr.p->word32[copyOperPtr.p->elementPointer] = tmp;
  copyInOperPtr.p->localdata[0] = copyOperPtr.p->localdata[0];
  copyInOperPtr.p->localdata[1] = copyOperPtr.p->localdata[1];
}//Dbacc::copyOpInfo()

/* ******************--------------------------------------------------------------- */
/* EXECUTE NEXT OPERATION                                                            */
/*          NEXT OPERATION IN A LOCK QUEUE WILL BE EXECUTED.                         */
/* --------------------------------------------------------------------------------- */
Uint32 Dbacc::executeNextOperation(Signal* signal) 
{
  ndbrequire(operationRecPtr.p->transactionstate == ACTIVE);
  if (fragrecptr.p->stopQueOp == ZTRUE) {
    Uint32 TelemDisappeared;
    jam();
    TelemDisappeared = operationRecPtr.p->elementIsDisappeared;
    if ((operationRecPtr.p->elementIsDisappeared == ZTRUE) &&
        (operationRecPtr.p->prevParallelQue == RNIL) &&
        ((operationRecPtr.p->operation == ZINSERT) ||
         (operationRecPtr.p->operation == ZWRITE))) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // In this case we do not wish to change the elementIsDisappeared since that would
      // create an error the next time this method is called for this operation after local
      // checkpoint starts up operations again. We must however ensure that operations
      // that follow in the queue do not get the value ZTRUE when actually an INSERT/WRITE
      // precedes them (only if the INSERT/WRITE is the first operation).
      /* --------------------------------------------------------------------------------- */
      TelemDisappeared = ZFALSE;
    }//if    
    /* --------------------------------------------------------------------------------- */
    /*       A LOCAL CHECKPOINT HAS STOPPED OPERATIONS. WE MUST NOT START THE OPERATION  */
    /*       AT THIS TIME. WE SET THE STATE TO INDICATE THAT WE ARE READY TO START AS    */
    /*       SOON AS WE ARE ALLOWED.                                                     */
    /* --------------------------------------------------------------------------------- */
    operationRecPtr.p->opState = WAIT_EXE_OP;
    return TelemDisappeared;
  }//if
  takeOutFragWaitQue(signal);
  if (operationRecPtr.p->elementIsDisappeared == ZTRUE) {
    /* --------------------------------------------------------------------------------- */
    /* PREVIOUS OPERATION WAS DELETE OPERATION AND THE ELEMENT IS ALREADY DELETED.       */
    /* --------------------------------------------------------------------------------- */
    if (((operationRecPtr.p->operation != ZINSERT) &&
	 (operationRecPtr.p->operation != ZWRITE)) ||
        (operationRecPtr.p->prevParallelQue != RNIL)) {
      if (operationRecPtr.p->operation != ZSCAN_OP ||
          operationRecPtr.p->isAccLockReq) {
        jam();
	/* --------------------------------------------------------------------------------- */
	// Updates and reads with a previous delete simply aborts with read error indicating
	// that tuple did not exist. Also inserts and writes not being the first operation.
	/* --------------------------------------------------------------------------------- */
        operationRecPtr.p->transactionstate = WAIT_COMMIT_ABORT;
        signal->theData[0] = operationRecPtr.p->userptr;
        signal->theData[1] = ZREAD_ERROR;
        sendSignal(operationRecPtr.p->userblockref, GSN_ACCKEYREF, signal, 2, JBB);
        return operationRecPtr.p->elementIsDisappeared;
      } else {
	/* --------------------------------------------------------------------------------- */
	/*	ABORT OF OPERATION NEEDED BUT THE OPERATION IS A SCAN => SPECIAL TREATMENT. */
	/*	IF THE SCAN WAITS IN QUEUE THEN WE MUST REMOVE THE OPERATION FROM THE SCAN  */
	/*	LOCK QUEUE AND IF NO MORE OPERATIONS ARE QUEUED THEN WE SHOULD RESTART THE  */
	/*	SCAN PROCESS. OTHERWISE WE SIMPLY RELEASE THE OPERATION AND DECREASE THE    */
	/*	NUMBER OF LOCKS HELD.                                                       */
	/* --------------------------------------------------------------------------------- */
        takeOutScanLockQueue(operationRecPtr.p->scanRecPtr);
        putReadyScanQueue(signal, operationRecPtr.p->scanRecPtr);
        return operationRecPtr.p->elementIsDisappeared;
      }//if
    }//if
    /* --------------------------------------------------------------------------------- */
    // Insert and writes can continue but need to be converted to inserts.
    /* --------------------------------------------------------------------------------- */
    jam();
    operationRecPtr.p->elementIsDisappeared = ZFALSE;
    operationRecPtr.p->operation = ZINSERT;
    operationRecPtr.p->insertIsDone = ZTRUE;
  } else if (operationRecPtr.p->operation == ZINSERT) {
    bool abortFlag = true;
    if (operationRecPtr.p->prevParallelQue != RNIL) {
      OperationrecPtr prevOpPtr;
      jam();
      prevOpPtr.i = operationRecPtr.p->prevParallelQue;
      ptrCheckGuard(prevOpPtr, coprecsize, operationrec);
      if (prevOpPtr.p->operation == ZDELETE) {
        jam();
        abortFlag = false;
      }//if
    }//if
    if (abortFlag) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*	ELEMENT STILL REMAINS AND WE ARE TRYING TO INSERT IT AGAIN. THIS IS CLEARLY  */
      /*	NOT A GOOD IDEA.                                                             */
      /* --------------------------------------------------------------------------------- */
      operationRecPtr.p->transactionstate = WAIT_COMMIT_ABORT;
      signal->theData[0] = operationRecPtr.p->userptr;
      signal->theData[1] = ZWRITE_ERROR;
      sendSignal(operationRecPtr.p->userblockref, GSN_ACCKEYREF, signal, 2, JBB);
      return operationRecPtr.p->elementIsDisappeared;
    }//if
  }//if
  if (operationRecPtr.p->operation == ZSCAN_OP &&
      ! operationRecPtr.p->isAccLockReq) {
    jam();
    takeOutScanLockQueue(operationRecPtr.p->scanRecPtr);
    putReadyScanQueue(signal, operationRecPtr.p->scanRecPtr);
  } else {
    jam();
    sendAcckeyconf(signal);
    sendSignal(operationRecPtr.p->userblockref, GSN_ACCKEYCONF, signal, 6, JBB);
  }//if
  return operationRecPtr.p->elementIsDisappeared;
}//Dbacc::executeNextOperation()

/* --------------------------------------------------------------------------------- */
/* TAKE_OUT_FRAG_WAIT_QUE                                                            */
/*         DESCRIPTION: AN OPERATION WHICH OWNS A LOCK OF AN ELEMENT, IS IN A LIST   */
/*                    OF THE FRAGMENT. THIS LIST IS USED TO STOP THE QUEUE OPERATION */
/*                    DURING CREATE CHECK POINT PROSESS FOR STOP AND RESTART OF THE  */
/*                OPERATIONS. THIS SUBRUTIN TAKES A OPERATION RECORD OUT OF THE LIST */
/* -------------------------------------------------------------------------------- */
void Dbacc::takeOutFragWaitQue(Signal* signal) 
{
  OperationrecPtr tofwqOperRecPtr;

  if (operationRecPtr.p->opState == WAIT_IN_QUEUE) {
    if (fragrecptr.p->sentWaitInQueOp == operationRecPtr.i) {
      jam();
      fragrecptr.p->sentWaitInQueOp = operationRecPtr.p->nextQueOp;
    }//if
    if (operationRecPtr.p->prevQueOp != RNIL) {
      jam();
      tofwqOperRecPtr.i = operationRecPtr.p->prevQueOp;
      ptrCheckGuard(tofwqOperRecPtr, coprecsize, operationrec);
      tofwqOperRecPtr.p->nextQueOp = operationRecPtr.p->nextQueOp;
    } else {
      jam();
      fragrecptr.p->firstWaitInQueOp = operationRecPtr.p->nextQueOp;
    }//if
    if (operationRecPtr.p->nextQueOp != RNIL) {
      jam();
      tofwqOperRecPtr.i = operationRecPtr.p->nextQueOp;
      ptrCheckGuard(tofwqOperRecPtr, coprecsize, operationrec);
      tofwqOperRecPtr.p->prevQueOp = operationRecPtr.p->prevQueOp;
    } else {
      jam();
      fragrecptr.p->lastWaitInQueOp = operationRecPtr.p->prevQueOp;
    }//if
    operationRecPtr.p->opState = FREE_OP;
    return;
  } else {
    ndbrequire(operationRecPtr.p->opState == FREE_OP);
  }//if
}//Dbacc::takeOutFragWaitQue()

/**
 * takeOutLockOwnersList
 *
 * Description: Take out an operation from the doubly linked 
 * lock owners list on the fragment.
 *
 */
void Dbacc::takeOutLockOwnersList(Signal* signal,
				  const OperationrecPtr& outOperPtr) 
{
  const Uint32 Tprev = outOperPtr.p->prevLockOwnerOp;
  const Uint32 Tnext = outOperPtr.p->nextLockOwnerOp;

#ifdef VM_TRACE
  // Check that operation is already in the list
  OperationrecPtr tmpOperPtr;
  bool inList = false;
  tmpOperPtr.i = fragrecptr.p->lockOwnersList;
  while (tmpOperPtr.i != RNIL){
    ptrCheckGuard(tmpOperPtr, coprecsize, operationrec);
    if (tmpOperPtr.i == outOperPtr.i)
      inList = true;
    tmpOperPtr.i = tmpOperPtr.p->nextLockOwnerOp;
  }
  ndbrequire(inList == true);
#endif

  ndbrequire(outOperPtr.p->lockOwner == ZTRUE);
  outOperPtr.p->lockOwner = ZFALSE;

  // Fast path through the code for the common case.
  if ((Tprev == RNIL) && (Tnext == RNIL)) {
    ndbrequire(fragrecptr.p->lockOwnersList == outOperPtr.i);
    fragrecptr.p->lockOwnersList = RNIL;
    return;
  } 

  // Check previous operation 
  if (Tprev != RNIL) {    
    jam();
    arrGuard(Tprev, coprecsize);
    operationrec[Tprev].nextLockOwnerOp = Tnext;
  } else {
    fragrecptr.p->lockOwnersList = Tnext;
  }//if

  // Check next operation
  if (Tnext == RNIL) {
    return;
  } else {
    jam();
    arrGuard(Tnext, coprecsize);
    operationrec[Tnext].prevLockOwnerOp = Tprev;
  }//if

  return;
}//Dbacc::takeOutLockOwnersList()

/**
 * insertLockOwnersList
 *
 * Description: Insert an operation first in the dubly linked lock owners 
 * list on the fragment.
 *
 */
void Dbacc::insertLockOwnersList(Signal* signal, 
				 const OperationrecPtr& insOperPtr) 
{
  OperationrecPtr tmpOperPtr;
  
#ifdef VM_TRACE
  // Check that operation is not already in list
  tmpOperPtr.i = fragrecptr.p->lockOwnersList;
  while(tmpOperPtr.i != RNIL){
    ptrCheckGuard(tmpOperPtr, coprecsize, operationrec);
    ndbrequire(tmpOperPtr.i != insOperPtr.i);
    tmpOperPtr.i = tmpOperPtr.p->nextLockOwnerOp;    
  }
#endif

  ndbrequire(insOperPtr.p->lockOwner == ZFALSE);

  insOperPtr.p->lockOwner = ZTRUE;
  insOperPtr.p->prevLockOwnerOp = RNIL;
  tmpOperPtr.i = fragrecptr.p->lockOwnersList;
  fragrecptr.p->lockOwnersList = insOperPtr.i;
  insOperPtr.p->nextLockOwnerOp = tmpOperPtr.i;
  if (tmpOperPtr.i == RNIL) {
    return;
  } else {
    jam();
    ptrCheckGuard(tmpOperPtr, coprecsize, operationrec);
    tmpOperPtr.p->prevLockOwnerOp = insOperPtr.i;
  }//if
}//Dbacc::insertLockOwnersList()


/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF COMMIT AND ABORT MODULE                                              */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ALLOC_OVERFLOW_PAGE                                                               */
/*          DESCRIPTION:                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::allocOverflowPage(Signal* signal) 
{
  DirRangePtr aopDirRangePtr;
  DirectoryarrayPtr aopOverflowDirptr;
  OverflowRecordPtr aopOverflowRecPtr;
  Uint32 taopTmp1;
  Uint32 taopTmp2;
  Uint32 taopTmp3;

  tresult = 0;
  if ((cfirstfreepage == RNIL) &&
      (cfreepage >= cpagesize)) {
    jam();  
    zpagesize_error("Dbacc::allocOverflowPage");
    tresult = ZPAGESIZE_ERROR;
    return;
  }//if
  if (fragrecptr.p->firstFreeDirindexRec != RNIL) {
    jam();
    /* FRAGRECPTR:FIRST_FREE_DIRINDEX_REC POINTS  */
    /* TO THE FIRST ELEMENT IN A FREE LIST OF THE */
    /* DIRECTORY INDEX WICH HAVE NULL AS PAGE     */
    aopOverflowRecPtr.i = fragrecptr.p->firstFreeDirindexRec;
    ptrCheckGuard(aopOverflowRecPtr, coverflowrecsize, overflowRecord);
    troOverflowRecPtr.p = aopOverflowRecPtr.p;
    takeRecOutOfFreeOverdir(signal);
  } else if (cfirstfreeoverrec == RNIL) {
    jam();
    tresult = ZOVER_REC_ERROR;
    return;
  } else if ((cfirstfreedir == RNIL) &&
             (cdirarraysize <= cdirmemory)) {
    jam();
    tresult = ZDIRSIZE_ERROR;
    return;
  } else {
    jam();
    seizeOverRec(signal);
    aopOverflowRecPtr = sorOverflowRecPtr;
    aopOverflowRecPtr.p->dirindex = fragrecptr.p->lastOverIndex;
  }//if
  aopOverflowRecPtr.p->nextOverRec = RNIL;
  aopOverflowRecPtr.p->prevOverRec = RNIL;
  fragrecptr.p->firstOverflowRec = aopOverflowRecPtr.i;
  fragrecptr.p->lastOverflowRec = aopOverflowRecPtr.i;
  taopTmp1 = aopOverflowRecPtr.p->dirindex;
  aopDirRangePtr.i = fragrecptr.p->overflowdir;
  taopTmp2 = taopTmp1 >> 8;
  taopTmp3 = taopTmp1 & 0xff;
  ptrCheckGuard(aopDirRangePtr, cdirrangesize, dirRange);
  arrGuard(taopTmp2, 256);
  if (aopDirRangePtr.p->dirArray[taopTmp2] == RNIL) {
    jam();
    seizeDirectory(signal);
    ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    aopDirRangePtr.p->dirArray[taopTmp2] = sdDirptr.i;
  }//if
  aopOverflowDirptr.i = aopDirRangePtr.p->dirArray[taopTmp2];
  seizePage(signal);
  ndbrequire(tresult <= ZLIMIT_OF_ERROR);
  ptrCheckGuard(aopOverflowDirptr, cdirarraysize, directoryarray);
  aopOverflowDirptr.p->pagep[taopTmp3] = spPageptr.i;
  tiopPageId = aopOverflowRecPtr.p->dirindex;
  iopOverflowRecPtr = aopOverflowRecPtr;
  iopPageptr = spPageptr;
  initOverpage(signal);
  aopOverflowRecPtr.p->overpage = spPageptr.i;
  if (fragrecptr.p->lastOverIndex <= aopOverflowRecPtr.p->dirindex) {
    jam();
    ndbrequire(fragrecptr.p->lastOverIndex == aopOverflowRecPtr.p->dirindex);
    fragrecptr.p->lastOverIndex++;
  }//if
}//Dbacc::allocOverflowPage()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       EXPAND/SHRINK MODULE                                                        */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/*EXPANDCHECK                                        EXPAND BUCKET ORD               */
/* SENDER: ACC,    LEVEL B         */
/*   INPUT:   FRAGRECPTR, POINTS TO A FRAGMENT RECORD.                               */
/*   DESCRIPTION: A BUCKET OF A FRAGMENT PAGE WILL BE EXPAND INTO TWO BUCKETS        */
/*                                 ACCORDING TO LH3.                                 */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* EXPANDCHECK                                        EXPAND BUCKET ORD              */
/* ******************------------------------------+                                 */
/* SENDER: ACC,    LEVEL B         */
/* A BUCKET OF THE FRAGMENT WILL   */
/* BE EXPANDED ACORDING TO LH3,    */
/* AND COMMIT TRANSACTION PROCESS  */
/* WILL BE CONTINUED */
Uint32 Dbacc::checkScanExpand(Signal* signal)
{
  Uint32 Ti;
  Uint32 TreturnCode = 0;
  Uint32 TPageIndex;
  Uint32 TDirInd;
  Uint32 TSplit;
  Uint32 TreleaseInd = 0;
  Uint32 TreleaseScanBucket;
  Uint32 TreleaseScanIndicator[4];
  DirectoryarrayPtr TDirptr;
  DirRangePtr TDirRangePtr;
  Page8Ptr TPageptr;
  ScanRecPtr TscanPtr;
  RootfragmentrecPtr Trootfragrecptr;

  Trootfragrecptr.i = fragrecptr.p->myroot;
  TSplit = fragrecptr.p->p;
  ptrCheckGuard(Trootfragrecptr, crootfragmentsize, rootfragmentrec);
  for (Ti = 0; Ti < 4; Ti++) {
    TreleaseScanIndicator[Ti] = 0;
    if (Trootfragrecptr.p->scan[Ti] != RNIL) {
      //-------------------------------------------------------------
      // A scan is ongoing on this particular local fragment. We have
      // to check its current state.
      //-------------------------------------------------------------
      TscanPtr.i = Trootfragrecptr.p->scan[Ti];
      ptrCheckGuard(TscanPtr, cscanRecSize, scanRec);
      if (TscanPtr.p->activeLocalFrag == fragrecptr.i) {
        if (TscanPtr.p->scanBucketState ==  ScanRec::FIRST_LAP) {
          if (TSplit == TscanPtr.p->nextBucketIndex) {
            jam();
	    //-------------------------------------------------------------
	    // We are currently scanning this bucket. We cannot split it
	    // simultaneously with the scan. We have to pass this offer for
	    // splitting the bucket.
	    //-------------------------------------------------------------
            TreturnCode = 1;
            return TreturnCode;
          } else if (TSplit > TscanPtr.p->nextBucketIndex) {
            jam();
	    //-------------------------------------------------------------
	    // This bucket has not yet been scanned. We must reset the scanned
	    // bit indicator for this scan on this bucket.
	    //-------------------------------------------------------------
            TreleaseScanIndicator[Ti] = 1;
            TreleaseInd = 1;
          } else {
            jam();
          }//if
        } else if (TscanPtr.p->scanBucketState ==  ScanRec::SECOND_LAP) {
          jam();
	  //-------------------------------------------------------------
	  // We are performing a second lap to handle buckets that was
	  // merged during the first lap of scanning. During this second
	  // lap we do not allow any splits or merges.
	  //-------------------------------------------------------------
          TreturnCode = 1;
          return TreturnCode;
        } else {
          ndbrequire(TscanPtr.p->scanBucketState ==  ScanRec::SCAN_COMPLETED);
          jam();
	  //-------------------------------------------------------------
	  // The scan is completed and we can thus go ahead and perform
	  // the split.
	  //-------------------------------------------------------------
        }//if
      }//if
    }//if
  }//for
  if (TreleaseInd == 1) {
    TreleaseScanBucket = TSplit;
    TDirRangePtr.i = fragrecptr.p->directory;
    TPageIndex = TreleaseScanBucket & ((1 << fragrecptr.p->k) - 1);	/* PAGE INDEX OBS K = 6 */
    TDirInd = TreleaseScanBucket >> fragrecptr.p->k;	/* DIRECTORY INDEX OBS K = 6 */
    ptrCheckGuard(TDirRangePtr, cdirrangesize, dirRange);
    arrGuard((TDirInd >> 8), 256);
    TDirptr.i = TDirRangePtr.p->dirArray[TDirInd >> 8];
    ptrCheckGuard(TDirptr, cdirarraysize, directoryarray);
    TPageptr.i = TDirptr.p->pagep[TDirInd & 0xff];
    ptrCheckGuard(TPageptr, cpagesize, page8);
    for (Ti = 0; Ti < 4; Ti++) {
      if (TreleaseScanIndicator[Ti] == 1) {
        jam();
        scanPtr.i = Trootfragrecptr.p->scan[Ti];
        ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
        rsbPageidptr = TPageptr;
        trsbPageindex = TPageIndex;
        releaseScanBucket(signal);
      }//if
    }//for
  }//if
  return TreturnCode;
}//Dbacc::checkScanExpand()

void Dbacc::execEXPANDCHECK2(Signal* signal) 
{
  DirectoryarrayPtr newDirptr;

  jamEntry();
  fragrecptr.i = signal->theData[0];
  tresult = 0;	/* 0= FALSE,1= TRUE,> ZLIMIT_OF_ERROR =ERRORCODE */
  Uint32 tmp = 1;
  tmp = tmp << 31;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  fragrecptr.p->expandFlag = 0;
  if (fragrecptr.p->slack < tmp) {
    jam();
    /* IT MEANS THAT IF SLACK > ZERO */
    /*--------------------------------------------------------------*/
    /*       THE SLACK HAS IMPROVED AND IS NOW ACCEPTABLE AND WE    */
    /*       CAN FORGET ABOUT THE EXPAND PROCESS.                   */
    /*--------------------------------------------------------------*/
    return;
  }//if
  if (fragrecptr.p->firstOverflowRec == RNIL) {
    jam();
    allocOverflowPage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      /*--------------------------------------------------------------*/
      /* WE COULD NOT ALLOCATE ANY OVERFLOW PAGE. THUS WE HAVE TO STOP*/
      /* THE EXPAND SINCE WE CANNOT GUARANTEE ITS COMPLETION.         */
      /*--------------------------------------------------------------*/
      return;
    }//if
  }//if
  if (cfirstfreepage == RNIL) {
    if (cfreepage >= cpagesize) {
      jam();
      /*--------------------------------------------------------------*/
      /* WE HAVE TO STOP THE EXPAND PROCESS SINCE THERE ARE NO FREE   */
      /* PAGES. THIS MEANS THAT WE COULD BE FORCED TO CRASH SINCE WE  */
      /* CANNOT COMPLETE THE EXPAND. TO AVOID THE CRASH WE EXIT HERE. */
      /*--------------------------------------------------------------*/
      return;
    }//if
  }//if
  if (checkScanExpand(signal) == 1) {
    jam();
    /*--------------------------------------------------------------*/
    // A scan state was inconsistent with performing an expand
    // operation.
    /*--------------------------------------------------------------*/
    return;
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_EXPAND) {
      jam();
      /*--------------------------------------------------------------*/
      // We did not have enough undo log buffers to start up an
      // expand operation
      /*--------------------------------------------------------------*/
      return;
    }//if
  }//if
  /*--------------------------------------------------------------------------*/
  /*       WE START BY FINDING THE PAGE, THE PAGE INDEX AND THE PAGE DIRECTORY*/
  /*       OF THE NEW BUCKET WHICH SHALL RECEIVE THE ELEMENT WHICH HAVE A 1 IN*/
  /*       THE NEXT HASH BIT. THIS BIT IS USED IN THE SPLIT MECHANISM TO      */
  /*       DECIDE WHICH ELEMENT GOES WHERE.                                   */
  /*--------------------------------------------------------------------------*/
  expDirRangePtr.i = fragrecptr.p->directory;
  texpReceivedBucket = (fragrecptr.p->maxp + fragrecptr.p->p) + 1;	/* RECEIVED BUCKET */
  texpDirInd = texpReceivedBucket >> fragrecptr.p->k;
  newDirptr.i = RNIL;
  ptrNull(newDirptr);
  texpDirRangeIndex = texpDirInd >> 8;
  ptrCheckGuard(expDirRangePtr, cdirrangesize, dirRange);
  arrGuard(texpDirRangeIndex, 256);
  expDirptr.i = expDirRangePtr.p->dirArray[texpDirRangeIndex];
  if (expDirptr.i == RNIL) {
    jam();
    seizeDirectory(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      return;
    } else {
      jam();
      newDirptr = sdDirptr;
      expDirptr = sdDirptr;
      expDirRangePtr.p->dirArray[texpDirRangeIndex] = sdDirptr.i;
    }//if
  } else {
    ptrCheckGuard(expDirptr, cdirarraysize, directoryarray);
  }//if
  texpDirPageIndex = texpDirInd & 0xff;
  expPageptr.i = expDirptr.p->pagep[texpDirPageIndex];
  if (expPageptr.i == RNIL) {
    jam();
    seizePage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      if (newDirptr.i != RNIL) {
        jam();
        rdDirptr.i = newDirptr.i;
        releaseDirectory(signal);
      }//if
      return;
    }//if
    expDirptr.p->pagep[texpDirPageIndex] = spPageptr.i;
    tipPageId = texpDirInd;
    inpPageptr = spPageptr;
    initPage(signal);
    fragrecptr.p->dirsize++;
    expPageptr = spPageptr;
  } else {
    ptrCheckGuard(expPageptr, cpagesize, page8);
  }//if
  fragrecptr.p->expReceivePageptr = expPageptr.i;
  fragrecptr.p->expReceiveIndex = texpReceivedBucket & ((1 << fragrecptr.p->k) - 1);
  /*--------------------------------------------------------------------------*/
  /*       THE NEXT ACTION IS TO FIND THE PAGE, THE PAGE INDEX AND THE PAGE   */
  /*       DIRECTORY OF THE BUCKET TO BE SPLIT.                               */
  /*--------------------------------------------------------------------------*/
  expDirRangePtr.i = fragrecptr.p->directory;
  cexcPageindex = fragrecptr.p->p & ((1 << fragrecptr.p->k) - 1);	/* PAGE INDEX OBS K = 6 */
  texpDirInd = fragrecptr.p->p >> fragrecptr.p->k;	/* DIRECTORY INDEX OBS K = 6 */
  ptrCheckGuard(expDirRangePtr, cdirrangesize, dirRange);
  arrGuard((texpDirInd >> 8), 256);
  expDirptr.i = expDirRangePtr.p->dirArray[texpDirInd >> 8];
  ptrCheckGuard(expDirptr, cdirarraysize, directoryarray);
  excPageptr.i = expDirptr.p->pagep[texpDirInd & 0xff];
  fragrecptr.p->expSenderIndex = cexcPageindex;
  fragrecptr.p->expSenderPageptr = excPageptr.i;
  if (excPageptr.i == RNIL) {
    jam();
    endofexpLab(signal);	/* EMPTY BUCKET */
    return;
  }//if
  fragrecptr.p->expReceiveForward = ZTRUE;
  ptrCheckGuard(excPageptr, cpagesize, page8);
  expandcontainer(signal);
  endofexpLab(signal);
  return;
}//Dbacc::execEXPANDCHECK2()

void Dbacc::endofexpLab(Signal* signal) 
{
  fragrecptr.p->p++;
  fragrecptr.p->slack += fragrecptr.p->maxloadfactor;
  fragrecptr.p->expandCounter++;
  if (fragrecptr.p->p > fragrecptr.p->maxp) {
    jam();
    fragrecptr.p->maxp = (fragrecptr.p->maxp << 1) | 1;
    fragrecptr.p->lhdirbits++;
    fragrecptr.p->hashcheckbit++;
    fragrecptr.p->p = 0;
  }//if
  Uint32 noOfBuckets = (fragrecptr.p->maxp + 1) + fragrecptr.p->p;
  Uint32 Thysteres = fragrecptr.p->maxloadfactor - fragrecptr.p->minloadfactor;
  fragrecptr.p->slackCheck = noOfBuckets * Thysteres;
  if (fragrecptr.p->slack > (Uint32)(1 << 31)) {
    jam();
    /* IT MEANS THAT IF SLACK < ZERO */
    /* --------------------------------------------------------------------------------- */
    /*       IT IS STILL NECESSARY TO EXPAND THE FRAGMENT EVEN MORE. START IT FROM HERE  */
    /*       WITHOUT WAITING FOR NEXT COMMIT ON THE FRAGMENT.                            */
    /* --------------------------------------------------------------------------------- */
    fragrecptr.p->expandFlag = 1;
    signal->theData[0] = fragrecptr.i;
    signal->theData[1] = fragrecptr.p->p;
    signal->theData[2] = fragrecptr.p->maxp;
    sendSignal(cownBlockref, GSN_EXPANDCHECK2, signal, 3, JBB);
  }//if
  return;
}//Dbacc::endofexpLab()

void Dbacc::execDEBUG_SIG(Signal* signal) 
{
  jamEntry();
  expPageptr.i = signal->theData[0];

  progError(__LINE__,
	    ERR_SR_UNDOLOG);
  return;
}//Dbacc::execDEBUG_SIG()

/* --------------------------------------------------------------------------------- */
/* EXPANDCONTAINER                                                                   */
/*        INPUT: EXC_PAGEPTR (POINTER TO THE ACTIVE PAGE RECORD)                     */
/*               CEXC_PAGEINDEX (INDEX OF THE BUCKET).                               */
/*                                                                                   */
/*        DESCRIPTION: THE HASH VALUE OF ALL ELEMENTS IN THE CONTAINER WILL BE       */
/*                  CHECKED. SOME OF THIS ELEMENTS HAVE TO MOVE TO THE NEW CONTAINER */
/* --------------------------------------------------------------------------------- */
void Dbacc::expandcontainer(Signal* signal) 
{
  Uint32 texcHashvalue;
  Uint32 texcTmp;
  Uint32 texcIndex;
  Uint32 texpKeyLen;
  Uint32 guard20;

  texpKeyLen = fragrecptr.p->keyLength;
  if (texpKeyLen == 0) {
    jam();
    texpKeyLen = ZACTIVE_LONG_KEY_LEN;
  }//if
  cexcPrevpageptr = RNIL;
  cexcPrevconptr = 0;
  cexcForward = ZTRUE;
 EXP_CONTAINER_LOOP:
  cexcContainerptr = (cexcPageindex << ZSHIFT_PLUS) - (cexcPageindex << ZSHIFT_MINUS);
  if (cexcForward == ZTRUE) {
    jam();
    cexcContainerptr = cexcContainerptr + ZHEAD_SIZE;
    cexcElementptr = cexcContainerptr + ZCON_HEAD_SIZE;
  } else {
    jam();
    cexcContainerptr = ((cexcContainerptr + ZHEAD_SIZE) + ZBUF_SIZE) - ZCON_HEAD_SIZE;
    cexcElementptr = cexcContainerptr - 1;
  }//if
  arrGuard(cexcContainerptr, 2048);
  cexcContainerhead = excPageptr.p->word32[cexcContainerptr];
  cexcContainerlen = cexcContainerhead >> 26;
  cexcMovedLen = ZCON_HEAD_SIZE;
  if (cexcContainerlen <= ZCON_HEAD_SIZE) {
    ndbrequire(cexcContainerlen >= ZCON_HEAD_SIZE);
    jam();
    goto NEXT_ELEMENT;
  }//if
 NEXT_ELEMENT_LOOP:
  idrOperationRecPtr.i = RNIL;
  ptrNull(idrOperationRecPtr);
  /* --------------------------------------------------------------------------------- */
  /*       CEXC_PAGEINDEX         PAGE INDEX OF CURRENT CONTAINER BEING EXAMINED.      */
  /*       CEXC_CONTAINERPTR      INDEX OF CURRENT CONTAINER BEING EXAMINED.           */
  /*       CEXC_ELEMENTPTR        INDEX OF CURRENT ELEMENT BEING EXAMINED.             */
  /*       EXC_PAGEPTR            PAGE WHERE CURRENT ELEMENT RESIDES.                  */
  /*       CEXC_PREVPAGEPTR        PAGE OF PREVIOUS CONTAINER.                         */
  /*       CEXC_PREVCONPTR        INDEX OF PREVIOUS CONTAINER                          */
  /*       CEXC_FORWARD           DIRECTION OF CURRENT CONTAINER                       */
  /* --------------------------------------------------------------------------------- */
  arrGuard(cexcElementptr, 2048);
  tidrElemhead = excPageptr.p->word32[cexcElementptr];
  if (ElementHeader::getUnlocked(tidrElemhead)){
    jam();
    texcHashvalue = ElementHeader::getHashValuePart(tidrElemhead);
  } else {
    jam();
    idrOperationRecPtr.i = ElementHeader::getOpPtrI(tidrElemhead);
    ptrCheckGuard(idrOperationRecPtr, coprecsize, operationrec);
    texcHashvalue = idrOperationRecPtr.p->hashvaluePart;
    if ((fragrecptr.p->createLcp == ZTRUE) &&
        (((texcHashvalue >> fragrecptr.p->hashcheckbit) & 1) != 0)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // During local checkpoints we must ensure that we restore the element header in
      // unlocked state and with the hash value part there with tuple status zeroed.
      // Otherwise a later insert over the same element will write an UNDO log that will
      // ensure that the now removed element is restored together with its locked element
      // header and without the hash value part.
      /* --------------------------------------------------------------------------------- */
      const Uint32 hv = idrOperationRecPtr.p->hashvaluePart;
      const Uint32 eh = ElementHeader::setUnlocked(hv, 0);
      excPageptr.p->word32[cexcElementptr] = eh;
    }//if
  }//if
  if (((texcHashvalue >> fragrecptr.p->hashcheckbit) & 1) == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THIS ELEMENT IS NOT TO BE MOVED. WE CALCULATE THE WHEREABOUTS OF THE NEXT   */
    /*       ELEMENT AND PROCEED WITH THAT OR END THE SEARCH IF THERE ARE NO MORE        */
    /*       ELEMENTS IN THIS CONTAINER.                                                 */
    /* --------------------------------------------------------------------------------- */
    goto NEXT_ELEMENT;
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       THE HASH BIT WAS SET AND WE SHALL MOVE THIS ELEMENT TO THE NEW BUCKET.      */
  /*       WE START BY READING THE ELEMENT TO BE ABLE TO INSERT IT INTO THE NEW BUCKET.*/
  /*       THEN WE INSERT THE ELEMENT INTO THE NEW BUCKET. THE NEXT STEP IS TO DELETE  */
  /*       THE ELEMENT FROM THIS BUCKET. THIS IS PERFORMED BY REPLACING IT WITH THE    */
  /*       LAST ELEMENT IN THE BUCKET. IF THIS ELEMENT IS TO BE MOVED WE MOVE IT AND   */
  /*       GET THE LAST ELEMENT AGAIN UNTIL WE EITHER FIND ONE THAT STAYS OR THIS      */
  /*       ELEMENT IS THE LAST ELEMENT.                                                */
  /* --------------------------------------------------------------------------------- */
  texcTmp = cexcElementptr + cexcForward;
  guard20 = fragrecptr.p->localkeylen - 1;
  for (texcIndex = 0; texcIndex <= guard20; texcIndex++) {
    arrGuard(texcIndex, 2);
    arrGuard(texcTmp, 2048);
    clocalkey[texcIndex] = excPageptr.p->word32[texcTmp];
    texcTmp = texcTmp + cexcForward;
  }//for
  guard20 = texpKeyLen - 1;
  for (texcIndex = 0; texcIndex <= guard20; texcIndex++) {
    arrGuard(texcIndex, 2048);
    arrGuard(texcTmp, 2048);
    ckeys[texcIndex] = excPageptr.p->word32[texcTmp];
    texcTmp = texcTmp + cexcForward;
  }//for
  tidrPageindex = fragrecptr.p->expReceiveIndex;
  idrPageptr.i = fragrecptr.p->expReceivePageptr;
  ptrCheckGuard(idrPageptr, cpagesize, page8);
  tidrForward = fragrecptr.p->expReceiveForward;
  tidrKeyLen = texpKeyLen;
  insertElement(signal);
  fragrecptr.p->expReceiveIndex = tidrPageindex;
  fragrecptr.p->expReceivePageptr = idrPageptr.i;
  fragrecptr.p->expReceiveForward = tidrForward;
 REMOVE_LAST_LOOP:
  jam();
  lastPageptr.i = excPageptr.i;
  lastPageptr.p = excPageptr.p;
  tlastContainerptr = cexcContainerptr;
  lastPrevpageptr.i = cexcPrevpageptr;
  ptrCheck(lastPrevpageptr, cpagesize, page8);
  tlastPrevconptr = cexcPrevconptr;
  arrGuard(tlastContainerptr, 2048);
  tlastContainerhead = lastPageptr.p->word32[tlastContainerptr];
  tlastContainerlen = tlastContainerhead >> 26;
  tlastForward = cexcForward;
  tlastPageindex = cexcPageindex;
  getLastAndRemove(signal);
  if (excPageptr.i == lastPageptr.i) {
    if (cexcElementptr == tlastElementptr) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       THE CURRENT ELEMENT WAS ALSO THE LAST ELEMENT.                              */
      /* --------------------------------------------------------------------------------- */
      return;
    }//if
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       THE CURRENT ELEMENT WAS NOT THE LAST ELEMENT. IF THE LAST ELEMENT SHOULD    */
  /*       STAY WE COPY IT TO THE POSITION OF THE CURRENT ELEMENT, OTHERWISE WE INSERT */
  /*       INTO THE NEW BUCKET, REMOVE IT AND TRY WITH THE NEW LAST ELEMENT.           */
  /* --------------------------------------------------------------------------------- */
  idrOperationRecPtr.i = RNIL;
  ptrNull(idrOperationRecPtr);
  arrGuard(tlastElementptr, 2048);
  tidrElemhead = lastPageptr.p->word32[tlastElementptr];
  if (ElementHeader::getUnlocked(tidrElemhead)) {
    jam();
    texcHashvalue = ElementHeader::getHashValuePart(tidrElemhead);
  } else {
    jam();
    idrOperationRecPtr.i = ElementHeader::getOpPtrI(tidrElemhead);
    ptrCheckGuard(idrOperationRecPtr, coprecsize, operationrec);
    texcHashvalue = idrOperationRecPtr.p->hashvaluePart;
    if ((fragrecptr.p->createLcp == ZTRUE) &&
        (((texcHashvalue >> fragrecptr.p->hashcheckbit) & 1) != 0)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // During local checkpoints we must ensure that we restore the element header in
      // unlocked state and with the hash value part there with tuple status zeroed.
      // Otherwise a later insert over the same element will write an UNDO log that will
      // ensure that the now removed element is restored together with its locked element
      // header and without the hash value part.
      /* --------------------------------------------------------------------------------- */
      const Uint32 hv = idrOperationRecPtr.p->hashvaluePart;
      const Uint32 eh = ElementHeader::setUnlocked(hv, 0);
      lastPageptr.p->word32[tlastElementptr] = eh;
    }//if
  }//if
  if (((texcHashvalue >> fragrecptr.p->hashcheckbit) & 1) == 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THE LAST ELEMENT IS NOT TO BE MOVED. WE COPY IT TO THE CURRENT ELEMENT.     */
    /* --------------------------------------------------------------------------------- */
    delPageptr = excPageptr;
    tdelContainerptr = cexcContainerptr;
    tdelForward = cexcForward;
    tdelElementptr = cexcElementptr;
    deleteElement(signal);
  } else {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       THE LAST ELEMENT IS ALSO TO BE MOVED.                                       */
    /* --------------------------------------------------------------------------------- */
    texcTmp = tlastElementptr + tlastForward;
    for (texcIndex = 0; texcIndex < fragrecptr.p->localkeylen; texcIndex++) {
      arrGuard(texcIndex, 2);
      arrGuard(texcTmp, 2048);
      clocalkey[texcIndex] = lastPageptr.p->word32[texcTmp];
      texcTmp = texcTmp + tlastForward;
    }//for
    for (texcIndex = 0; texcIndex < texpKeyLen; texcIndex++) {
      arrGuard(texcIndex, 2048);
      arrGuard(texcTmp, 2048);
      ckeys[texcIndex] = lastPageptr.p->word32[texcTmp];
      texcTmp = texcTmp + tlastForward;
    }//for
    tidrPageindex = fragrecptr.p->expReceiveIndex;
    idrPageptr.i = fragrecptr.p->expReceivePageptr;
    ptrCheckGuard(idrPageptr, cpagesize, page8);
    tidrForward = fragrecptr.p->expReceiveForward;
    tidrKeyLen = texpKeyLen;
    insertElement(signal);
    fragrecptr.p->expReceiveIndex = tidrPageindex;
    fragrecptr.p->expReceivePageptr = idrPageptr.i;
    fragrecptr.p->expReceiveForward = tidrForward;
    goto REMOVE_LAST_LOOP;
  }//if
 NEXT_ELEMENT:
  arrGuard(cexcContainerptr, 2048);
  cexcContainerhead = excPageptr.p->word32[cexcContainerptr];
  cexcMovedLen = cexcMovedLen + fragrecptr.p->elementLength;
  if ((cexcContainerhead >> 26) > cexcMovedLen) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       WE HAVE NOT YET MOVED THE COMPLETE CONTAINER. WE PROCEED WITH THE NEXT      */
    /*       ELEMENT IN THE CONTAINER. IT IS IMPORTANT TO READ THE CONTAINER LENGTH      */
    /*       FROM THE CONTAINER HEADER SINCE IT MIGHT CHANGE BY REMOVING THE LAST        */
    /*       ELEMENT IN THE BUCKET.                                                      */
    /* --------------------------------------------------------------------------------- */
    cexcElementptr = cexcElementptr + (cexcForward * fragrecptr.p->elementLength);
    goto NEXT_ELEMENT_LOOP;
  }//if
  if (((cexcContainerhead >> 7) & 3) != 0) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       WE PROCEED TO THE NEXT CONTAINER IN THE BUCKET.                             */
    /* --------------------------------------------------------------------------------- */
    cexcPrevpageptr = excPageptr.i;
    cexcPrevconptr = cexcContainerptr;
    nextcontainerinfoExp(signal);
    goto EXP_CONTAINER_LOOP;
  }//if
}//Dbacc::expandcontainer()

/* ******************--------------------------------------------------------------- */
/* SHRINKCHECK                                        JOIN BUCKET ORD                */
/*                                                   SENDER: ACC,    LEVEL B         */
/*   INPUT:   FRAGRECPTR, POINTS TO A FRAGMENT RECORD.                               */
/*   DESCRIPTION: TWO BUCKET OF A FRAGMENT PAGE WILL BE JOINED TOGETHER              */
/*                                 ACCORDING TO LH3.                                 */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* SHRINKCHECK                                            JOIN BUCKET ORD            */
/* ******************------------------------------+                                 */
/*   SENDER: ACC,    LEVEL B       */
/* TWO BUCKETS OF THE FRAGMENT     */
/* WILL BE JOINED  ACORDING TO LH3 */
/* AND COMMIT TRANSACTION PROCESS  */
/* WILL BE CONTINUED */
Uint32 Dbacc::checkScanShrink(Signal* signal)
{
  Uint32 Ti;
  Uint32 TreturnCode = 0;
  Uint32 TPageIndex;
  Uint32 TDirInd;
  Uint32 TmergeDest;
  Uint32 TmergeSource;
  Uint32 TreleaseScanBucket;
  Uint32 TreleaseInd = 0;
  Uint32 TreleaseScanIndicator[4];
  DirectoryarrayPtr TDirptr;
  DirRangePtr TDirRangePtr;
  Page8Ptr TPageptr;
  ScanRecPtr TscanPtr;
  RootfragmentrecPtr Trootfragrecptr;

  Trootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(Trootfragrecptr, crootfragmentsize, rootfragmentrec);
  if (fragrecptr.p->p == 0) {
    jam();
    TmergeDest = fragrecptr.p->maxp >> 1;
  } else {
    jam();
    TmergeDest = fragrecptr.p->p - 1;
  }//if
  TmergeSource = fragrecptr.p->maxp + fragrecptr.p->p;
  for (Ti = 0; Ti < 4; Ti++) {
    TreleaseScanIndicator[Ti] = 0;
    if (Trootfragrecptr.p->scan[Ti] != RNIL) {
      TscanPtr.i = Trootfragrecptr.p->scan[Ti];
      ptrCheckGuard(TscanPtr, cscanRecSize, scanRec);
      if (TscanPtr.p->activeLocalFrag == fragrecptr.i) {
	//-------------------------------------------------------------
	// A scan is ongoing on this particular local fragment. We have
	// to check its current state.
	//-------------------------------------------------------------
        if (TscanPtr.p->scanBucketState ==  ScanRec::FIRST_LAP) {
          jam();
          if ((TmergeDest == TscanPtr.p->nextBucketIndex) ||
              (TmergeSource == TscanPtr.p->nextBucketIndex)) {
            jam();
	    //-------------------------------------------------------------
	    // We are currently scanning one of the buckets involved in the
	    // merge. We cannot merge while simultaneously performing a scan.
	    // We have to pass this offer for merging the buckets.
	    //-------------------------------------------------------------
            TreturnCode = 1;
            return TreturnCode;
          } else if (TmergeDest < TscanPtr.p->nextBucketIndex) {
            jam();
            TreleaseScanIndicator[Ti] = 1;
            TreleaseInd = 1;
          }//if
        } else if (TscanPtr.p->scanBucketState ==  ScanRec::SECOND_LAP) {
          jam();
	  //-------------------------------------------------------------
	  // We are performing a second lap to handle buckets that was
	  // merged during the first lap of scanning. During this second
	  // lap we do not allow any splits or merges.
	  //-------------------------------------------------------------
          TreturnCode = 1;
          return TreturnCode;
        } else if (TscanPtr.p->scanBucketState ==  ScanRec::SCAN_COMPLETED) {
          jam();
	  //-------------------------------------------------------------
	  // The scan is completed and we can thus go ahead and perform
	  // the split.
	  //-------------------------------------------------------------
        } else {
          jam();
          sendSystemerror(signal);
          return TreturnCode;
        }//if
      }//if
    }//if
  }//for
  if (TreleaseInd == 1) {
    jam();
    TreleaseScanBucket = TmergeSource;
    TDirRangePtr.i = fragrecptr.p->directory;
    TPageIndex = TreleaseScanBucket & ((1 << fragrecptr.p->k) - 1);	/* PAGE INDEX OBS K = 6 */
    TDirInd = TreleaseScanBucket >> fragrecptr.p->k;	/* DIRECTORY INDEX OBS K = 6 */
    ptrCheckGuard(TDirRangePtr, cdirrangesize, dirRange);
    arrGuard((TDirInd >> 8), 256);
    TDirptr.i = TDirRangePtr.p->dirArray[TDirInd >> 8];
    ptrCheckGuard(TDirptr, cdirarraysize, directoryarray);
    TPageptr.i = TDirptr.p->pagep[TDirInd & 0xff];
    ptrCheckGuard(TPageptr, cpagesize, page8);
    for (Ti = 0; Ti < 4; Ti++) {
      if (TreleaseScanIndicator[Ti] == 1) {
        jam();
        scanPtr.i = Trootfragrecptr.p->scan[Ti];
        ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
        rsbPageidptr.i = TPageptr.i;
        rsbPageidptr.p = TPageptr.p;
        trsbPageindex = TPageIndex;
        releaseScanBucket(signal);
        if (TmergeDest < scanPtr.p->minBucketIndexToRescan) {
          jam();
	  //-------------------------------------------------------------
	  // We have to keep track of the starting bucket to Rescan in the
	  // second lap.
	  //-------------------------------------------------------------
          scanPtr.p->minBucketIndexToRescan = TmergeDest;
        }//if
        if (TmergeDest > scanPtr.p->maxBucketIndexToRescan) {
          jam();
	  //-------------------------------------------------------------
	  // We have to keep track of the ending bucket to Rescan in the
	  // second lap.
	  //-------------------------------------------------------------
          scanPtr.p->maxBucketIndexToRescan = TmergeDest;
        }//if
      }//if
    }//for
  }//if
  return TreturnCode;
}//Dbacc::checkScanShrink()

void Dbacc::execSHRINKCHECK2(Signal* signal) 
{
  Uint32 tshrTmp1;

  jamEntry();
  fragrecptr.i = signal->theData[0];
  tresult = 0;	/* 0= FALSE,1= TRUE,> ZLIMIT_OF_ERROR =ERRORCODE */
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  fragrecptr.p->expandFlag = 0;
  if (fragrecptr.p->slack <= fragrecptr.p->slackCheck) {
    jam();
    /* TIME FOR JOIN BUCKETS PROCESS */
    /*--------------------------------------------------------------*/
    /*       NO LONGER NECESSARY TO SHRINK THE FRAGMENT.            */
    /*--------------------------------------------------------------*/
    return;
  }//if
  if (fragrecptr.p->slack > (Uint32)(1 << 31)) {
    jam();
    /*--------------------------------------------------------------*/
    /* THE SLACK IS NEGATIVE, IN THIS CASE WE WILL NOT NEED ANY     */
    /* SHRINK.                                                      */
    /*--------------------------------------------------------------*/
    return;
  }//if
  texpDirInd = (fragrecptr.p->maxp + fragrecptr.p->p) >> fragrecptr.p->k;
  if (((fragrecptr.p->maxp + fragrecptr.p->p) & ((1 << fragrecptr.p->k) - 1)) == 0) {
    if (fragrecptr.p->createLcp == ZTRUE) {
      if (fragrecptr.p->fragState == LCP_SEND_PAGES) {
        if (fragrecptr.p->lcpMaxDirIndex > texpDirInd) {
          if (fragrecptr.p->lcpDirIndex <= texpDirInd) {
            jam();
	    /*--------------------------------------------------------------*/
	    /*       WE DO NOT ALLOW ANY SHRINKS THAT REMOVE PAGES THAT ARE */
	    /*       NEEDED AS PART OF THE LOCAL CHECKPOINT.                */
	    /*--------------------------------------------------------------*/
            return;
          }//if
        }//if
      }//if
    }//if
  }//if
  if (fragrecptr.p->firstOverflowRec == RNIL) {
    jam();
    allocOverflowPage(signal);
    if (tresult > ZLIMIT_OF_ERROR) {
      jam();
      return;
    }//if
  }//if
  if (cfirstfreepage == RNIL) {
    if (cfreepage >= cpagesize) {
      jam();
      /*--------------------------------------------------------------*/
      /* WE HAVE TO STOP THE SHRINK PROCESS SINCE THERE ARE NO FREE   */
      /* PAGES. THIS MEANS THAT WE COULD BE FORCED TO CRASH SINCE WE  */
      /* CANNOT COMPLETE THE SHRINK. TO AVOID THE CRASH WE EXIT HERE. */
      /*--------------------------------------------------------------*/
      return;
    }//if
  }//if
  if (checkScanShrink(signal) == 1) {
    jam();
    /*--------------------------------------------------------------*/
    // A scan state was inconsistent with performing a shrink
    // operation.
    /*--------------------------------------------------------------*/
    return;
  }//if
  if (fragrecptr.p->createLcp == ZTRUE) {
    if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_EXPAND) {
      jam();
      /*--------------------------------------------------------------*/
      // We did not have enough undo log buffers to start up an
      // shrink operation
      /*--------------------------------------------------------------*/
      return;
    }//if
  }//if
  if (fragrecptr.p->p == 0) {
    jam();
    fragrecptr.p->maxp = fragrecptr.p->maxp >> 1;
    fragrecptr.p->p = fragrecptr.p->maxp;
    fragrecptr.p->lhdirbits--;
    fragrecptr.p->hashcheckbit--;
  } else {
    jam();
    fragrecptr.p->p--;
  }//if
  /*--------------------------------------------------------------------------*/
  /*       WE START BY FINDING THE NECESSARY INFORMATION OF THE BUCKET TO BE  */
  /*       REMOVED WHICH WILL SEND ITS ELEMENTS TO THE RECEIVING BUCKET.      */
  /*--------------------------------------------------------------------------*/
  expDirRangePtr.i = fragrecptr.p->directory;
  cexcPageindex = ((fragrecptr.p->maxp + fragrecptr.p->p) + 1) & ((1 << fragrecptr.p->k) - 1);
  texpDirInd = ((fragrecptr.p->maxp + fragrecptr.p->p) + 1) >> fragrecptr.p->k;
  texpDirRangeIndex = texpDirInd >> 8;
  texpDirPageIndex = texpDirInd & 0xff;
  ptrCheckGuard(expDirRangePtr, cdirrangesize, dirRange);
  arrGuard(texpDirRangeIndex, 256);
  expDirptr.i = expDirRangePtr.p->dirArray[texpDirRangeIndex];
  ptrCheckGuard(expDirptr, cdirarraysize, directoryarray);
  excPageptr.i = expDirptr.p->pagep[texpDirPageIndex];
  fragrecptr.p->expSenderDirptr = expDirptr.i;
  fragrecptr.p->expSenderIndex = cexcPageindex;
  fragrecptr.p->expSenderPageptr = excPageptr.i;
  fragrecptr.p->expSenderDirIndex = texpDirInd;
  /*--------------------------------------------------------------------------*/
  /*       WE NOW PROCEED BY FINDING THE NECESSARY INFORMATION ABOUT THE      */
  /*       RECEIVING BUCKET.                                                  */
  /*--------------------------------------------------------------------------*/
  expDirRangePtr.i = fragrecptr.p->directory;
  texpReceivedBucket = fragrecptr.p->p >> fragrecptr.p->k;
  ptrCheckGuard(expDirRangePtr, cdirrangesize, dirRange);
  arrGuard((texpReceivedBucket >> 8), 256);
  expDirptr.i = expDirRangePtr.p->dirArray[texpReceivedBucket >> 8];
  ptrCheckGuard(expDirptr, cdirarraysize, directoryarray);
  fragrecptr.p->expReceivePageptr = expDirptr.p->pagep[texpReceivedBucket & 0xff];
  fragrecptr.p->expReceiveIndex = fragrecptr.p->p & ((1 << fragrecptr.p->k) - 1);
  fragrecptr.p->expReceiveForward = ZTRUE;
  if (excPageptr.i == RNIL) {
    jam();
    endofshrinkbucketLab(signal);	/* EMPTY BUCKET */
    return;
  }//if
  /*--------------------------------------------------------------------------*/
  /*       INITIALISE THE VARIABLES FOR THE SHRINK PROCESS.                   */
  /*--------------------------------------------------------------------------*/
  ptrCheckGuard(excPageptr, cpagesize, page8);
  cexcForward = ZTRUE;
  cexcContainerptr = (cexcPageindex << ZSHIFT_PLUS) - (cexcPageindex << ZSHIFT_MINUS);
  cexcContainerptr = cexcContainerptr + ZHEAD_SIZE;
  arrGuard(cexcContainerptr, 2048);
  cexcContainerhead = excPageptr.p->word32[cexcContainerptr];
  cexcContainerlen = cexcContainerhead >> 26;
  if (cexcContainerlen <= ZCON_HEAD_SIZE) {
    ndbrequire(cexcContainerlen == ZCON_HEAD_SIZE);
  } else {
    jam();
    shrinkcontainer(signal);
  }//if
  /*--------------------------------------------------------------------------*/
  /*       THIS CONTAINER IS NOT YET EMPTY AND WE REMOVE ALL THE ELEMENTS.    */
  /*--------------------------------------------------------------------------*/
  if (((cexcContainerhead >> 10) & 1) == 1) {
    jam();
    rlPageptr = excPageptr;
    trlPageindex = cexcPageindex;
    trlRelCon = ZFALSE;
    turlIndex = cexcContainerptr + (ZBUF_SIZE - ZCON_HEAD_SIZE);
    releaseRightlist(signal);
  }//if
  tshrTmp1 = ZCON_HEAD_SIZE;
  tshrTmp1 = tshrTmp1 << 26;
  if (fragrecptr.p->createLcp == ZTRUE) {
    jam();
    datapageptr.p = excPageptr.p;
    cundoinfolength = 1;
    cundoElemIndex = cexcContainerptr;
    undoWritingProcess(signal);
  }//if
  dbgWord32(excPageptr, cexcContainerptr, tshrTmp1);
  arrGuard(cexcContainerptr, 2048);
  excPageptr.p->word32[cexcContainerptr] = tshrTmp1;
  if (((cexcContainerhead >> 7) & 0x3) == 0) {
    jam();
    endofshrinkbucketLab(signal);
    return;
  }//if
  nextcontainerinfoExp(signal);
  do {
    cexcContainerptr = (cexcPageindex << ZSHIFT_PLUS) - (cexcPageindex << ZSHIFT_MINUS);
    if (cexcForward == ZTRUE) {
      jam();
      cexcContainerptr = cexcContainerptr + ZHEAD_SIZE;
    } else {
      jam();
      cexcContainerptr = ((cexcContainerptr + ZHEAD_SIZE) + ZBUF_SIZE) - ZCON_HEAD_SIZE;
    }//if
    arrGuard(cexcContainerptr, 2048);
    cexcContainerhead = excPageptr.p->word32[cexcContainerptr];
    cexcContainerlen = cexcContainerhead >> 26;
    ndbrequire(cexcContainerlen > ZCON_HEAD_SIZE);
    /*--------------------------------------------------------------------------*/
    /*       THIS CONTAINER IS NOT YET EMPTY AND WE REMOVE ALL THE ELEMENTS.    */
    /*--------------------------------------------------------------------------*/
    shrinkcontainer(signal);
    cexcPrevpageptr = excPageptr.i;
    cexcPrevpageindex = cexcPageindex;
    cexcPrevforward = cexcForward;
    if (((cexcContainerhead >> 7) & 0x3) != 0) {
      jam();
      /*--------------------------------------------------------------------------*/
      /*       WE MUST CALL THE NEXT CONTAINER INFO ROUTINE BEFORE WE RELEASE THE */
      /*       CONTAINER SINCE THE RELEASE WILL OVERWRITE THE NEXT POINTER.       */
      /*--------------------------------------------------------------------------*/
      nextcontainerinfoExp(signal);
    }//if
    rlPageptr.i = cexcPrevpageptr;
    ptrCheckGuard(rlPageptr, cpagesize, page8);
    trlPageindex = cexcPrevpageindex;
    if (cexcPrevforward == ZTRUE) {
      jam();
      if (((cexcContainerhead >> 10) & 1) == 1) {
        jam();
        trlRelCon = ZFALSE;
        turlIndex = cexcContainerptr + (ZBUF_SIZE - ZCON_HEAD_SIZE);
        releaseRightlist(signal);
      }//if
      trlRelCon = ZTRUE;
      tullIndex = cexcContainerptr;
      releaseLeftlist(signal);
    } else {
      jam();
      if (((cexcContainerhead >> 10) & 1) == 1) {
        jam();
        trlRelCon = ZFALSE;
        tullIndex = cexcContainerptr - (ZBUF_SIZE - ZCON_HEAD_SIZE);
        releaseLeftlist(signal);
      }//if
      trlRelCon = ZTRUE;
      turlIndex = cexcContainerptr;
      releaseRightlist(signal);
    }//if
  } while (((cexcContainerhead >> 7) & 0x3) != 0);
  endofshrinkbucketLab(signal);
  return;
}//Dbacc::execSHRINKCHECK2()

void Dbacc::endofshrinkbucketLab(Signal* signal) 
{
  fragrecptr.p->expandCounter--;
  fragrecptr.p->slack -= fragrecptr.p->maxloadfactor;
  if (fragrecptr.p->expSenderIndex == 0) {
    jam();
    fragrecptr.p->dirsize--;
    if (fragrecptr.p->expSenderPageptr != RNIL) {
      jam();
      rpPageptr.i = fragrecptr.p->expSenderPageptr;
      ptrCheckGuard(rpPageptr, cpagesize, page8);
      releasePage(signal);
      expDirptr.i = fragrecptr.p->expSenderDirptr;
      ptrCheckGuard(expDirptr, cdirarraysize, directoryarray);
      expDirptr.p->pagep[fragrecptr.p->expSenderDirIndex & 0xff] = RNIL;
    }//if
    if (((((fragrecptr.p->p + fragrecptr.p->maxp) + 1) >> fragrecptr.p->k) & 0xff) == 0) {
      jam();
      rdDirptr.i = fragrecptr.p->expSenderDirptr;
      releaseDirectory(signal);
      expDirRangePtr.i = fragrecptr.p->directory;
      ptrCheckGuard(expDirRangePtr, cdirrangesize, dirRange);
      arrGuard((fragrecptr.p->expSenderDirIndex >> 8), 256);
      expDirRangePtr.p->dirArray[fragrecptr.p->expSenderDirIndex >> 8] = RNIL;
    }//if
  }//if
  if (fragrecptr.p->slack < (Uint32)(1 << 31)) {
    jam();
    /*--------------------------------------------------------------*/
    /* THE SLACK IS POSITIVE, IN THIS CASE WE WILL CHECK WHETHER    */
    /* WE WILL CONTINUE PERFORM ANOTHER SHRINK.                     */
    /*--------------------------------------------------------------*/
    Uint32 noOfBuckets = (fragrecptr.p->maxp + 1) + fragrecptr.p->p;
    Uint32 Thysteresis = fragrecptr.p->maxloadfactor - fragrecptr.p->minloadfactor;
    fragrecptr.p->slackCheck = noOfBuckets * Thysteresis;
    if (fragrecptr.p->slack > Thysteresis) {
      /*--------------------------------------------------------------*/
      /*       IT IS STILL NECESSARY TO SHRINK THE FRAGMENT MORE. THIS*/
      /*       CAN HAPPEN WHEN A NUMBER OF SHRINKS GET REJECTED       */
      /*       DURING A LOCAL CHECKPOINT. WE START A NEW SHRINK       */
      /*       IMMEDIATELY FROM HERE WITHOUT WAITING FOR A COMMIT TO  */
      /*       START IT.                                              */
      /*--------------------------------------------------------------*/
      if (fragrecptr.p->expandCounter > 0) {
        jam();
	/*--------------------------------------------------------------*/
	/*       IT IS VERY IMPORTANT TO NOT TRY TO SHRINK MORE THAN    */
	/*       WAS EXPANDED. IF MAXP IS SET TO A VALUE BELOW 63 THEN  */
	/*       WE WILL LOSE RECORDS SINCE GETDIRINDEX CANNOT HANDLE   */
	/*       SHRINKING BELOW 2^K - 1 (NOW 63). THIS WAS A BUG THAT  */
	/*       WAS REMOVED 2000-05-12.                                */
	/*--------------------------------------------------------------*/
        fragrecptr.p->expandFlag = 1;
        signal->theData[0] = fragrecptr.i;
        signal->theData[1] = fragrecptr.p->p;
        signal->theData[2] = fragrecptr.p->maxp;
        sendSignal(cownBlockref, GSN_SHRINKCHECK2, signal, 3, JBB);
      }//if
    }//if
  }//if
  ndbrequire(fragrecptr.p->maxp >= (Uint32)((1 << fragrecptr.p->k) - 1));
  return;
}//Dbacc::endofshrinkbucketLab()

/* --------------------------------------------------------------------------------- */
/* SHRINKCONTAINER                                                                   */
/*        INPUT: EXC_PAGEPTR (POINTER TO THE ACTIVE PAGE RECORD)                     */
/*               CEXC_CONTAINERLEN (LENGTH OF THE CONTAINER).                        */
/*               CEXC_CONTAINERPTR (ARRAY INDEX OF THE CONTAINER).                   */
/*               CEXC_FORWARD (CONTAINER FORWARD (+1) OR BACKWARD (-1))              */
/*                                                                                   */
/*        DESCRIPTION: ALL ELEMENTS OF THE ACTIVE CONTAINER HAVE TO MOVE TO THE NEW  */
/*                  CONTAINER.                                                       */
/* --------------------------------------------------------------------------------- */
void Dbacc::shrinkcontainer(Signal* signal) 
{
  Uint32 tshrElementptr;
  Uint32 tshrRemLen;
  Uint32 tshrInc;
  Uint32 tshrKeyLen;
  Uint32 tshrTmp;
  Uint32 tshrIndex;
  Uint32 guard21;

  tshrRemLen = cexcContainerlen - ZCON_HEAD_SIZE;
  tshrKeyLen = fragrecptr.p->keyLength;
  if (tshrKeyLen == 0) {
    jam();
    tshrKeyLen = ZACTIVE_LONG_KEY_LEN;
  }//if
  tshrInc = (ZELEM_HEAD_SIZE + tshrKeyLen) + fragrecptr.p->localkeylen;
  if (cexcForward == ZTRUE) {
    jam();
    tshrElementptr = cexcContainerptr + ZCON_HEAD_SIZE;
  } else {
    jam();
    tshrElementptr = cexcContainerptr - 1;
  }//if
 SHR_LOOP:
  idrOperationRecPtr.i = RNIL;
  ptrNull(idrOperationRecPtr);
  /* --------------------------------------------------------------------------------- */
  /*       THE CODE BELOW IS ALL USED TO PREPARE FOR THE CALL TO INSERT_ELEMENT AND    */
  /*       HANDLE THE RESULT FROM INSERT_ELEMENT. INSERT_ELEMENT INSERTS THE ELEMENT   */
  /*       INTO ANOTHER BUCKET.                                                        */
  /* --------------------------------------------------------------------------------- */
  arrGuard(tshrElementptr, 2048);
  tidrElemhead = excPageptr.p->word32[tshrElementptr];
  if (ElementHeader::getLocked(tidrElemhead)) {
    jam();
    /* --------------------------------------------------------------------------------- */
    /*       IF THE ELEMENT IS LOCKED WE MUST UPDATE THE ELEMENT INFO IN THE OPERATION   */
    /*       RECORD OWNING THE LOCK. WE DO THIS BY READING THE OPERATION RECORD POINTER  */
    /*       FROM THE ELEMENT HEADER.                                                    */
    /* --------------------------------------------------------------------------------- */
    idrOperationRecPtr.i = ElementHeader::getOpPtrI(tidrElemhead);
    ptrCheckGuard(idrOperationRecPtr, coprecsize, operationrec);
    if (fragrecptr.p->createLcp == ZTRUE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // During local checkpoints we must ensure that we restore the element header in
      // unlocked state and with the hash value part there with tuple status zeroed.
      // Otherwise a later insert over the same element will write an UNDO log that will
      // ensure that the now removed element is restored together with its locked element
      // header and without the hash value part.
      /* --------------------------------------------------------------------------------- */
      const Uint32 hv = idrOperationRecPtr.p->hashvaluePart;
      const Uint32 eh = ElementHeader::setUnlocked(hv, 0);
      excPageptr.p->word32[tshrElementptr] = eh;    
    }//if
  }//if
  tshrTmp = tshrElementptr + cexcForward;
  guard21 = fragrecptr.p->localkeylen - 1;
  for (tshrIndex = 0; tshrIndex <= guard21; tshrIndex++) {
    arrGuard(tshrIndex, 2);
    arrGuard(tshrTmp, 2048);
    clocalkey[tshrIndex] = excPageptr.p->word32[tshrTmp];
    tshrTmp = tshrTmp + cexcForward;
  }//for
  guard21 = tshrKeyLen - 1;
  for (tshrIndex = 0; tshrIndex <= guard21; tshrIndex++) {
    arrGuard(tshrIndex, 2048);
    arrGuard(tshrTmp, 2048);
    ckeys[tshrIndex] = excPageptr.p->word32[tshrTmp];
    tshrTmp = tshrTmp + cexcForward;
  }//for
  tidrPageindex = fragrecptr.p->expReceiveIndex;
  idrPageptr.i = fragrecptr.p->expReceivePageptr;
  ptrCheckGuard(idrPageptr, cpagesize, page8);
  tidrForward = fragrecptr.p->expReceiveForward;
  tidrKeyLen = tshrKeyLen;
  insertElement(signal);
  /* --------------------------------------------------------------------------------- */
  /*       TAKE CARE OF RESULT FROM INSERT_ELEMENT.                                    */
  /* --------------------------------------------------------------------------------- */
  fragrecptr.p->expReceiveIndex = tidrPageindex;
  fragrecptr.p->expReceivePageptr = idrPageptr.i;
  fragrecptr.p->expReceiveForward = tidrForward;
  if (tshrRemLen < tshrInc) {
    jam();
    sendSystemerror(signal);
  }//if
  tshrRemLen = tshrRemLen - tshrInc;
  if (tshrRemLen != 0) {
    jam();
    tshrElementptr = tshrTmp;
    goto SHR_LOOP;
  }//if
}//Dbacc::shrinkcontainer()

/* --------------------------------------------------------------------------------- */
/* NEXTCONTAINERINFO_EXP                                                             */
/*        DESCRIPTION:THE CONTAINER HEAD WILL BE CHECKED TO CALCULATE INFORMATION    */
/*                    ABOUT NEXT CONTAINER IN THE BUCKET.                            */
/*          INPUT:       CEXC_CONTAINERHEAD                                          */
/*                       CEXC_CONTAINERPTR                                           */
/*                       EXC_PAGEPTR                                                 */
/*          OUTPUT:                                                                  */
/*             CEXC_PAGEINDEX (INDEX FROM WHICH PAGE INDEX CAN BE CALCULATED.        */
/*             EXC_PAGEPTR (PAGE REFERENCE OF NEXT CONTAINER)                        */
/*             CEXC_FORWARD                                                          */
/* --------------------------------------------------------------------------------- */
void Dbacc::nextcontainerinfoExp(Signal* signal) 
{
  tnciNextSamePage = (cexcContainerhead >> 9) & 0x1;	/* CHECK BIT FOR CHECKING WHERE */
  /* THE NEXT CONTAINER IS IN THE SAME PAGE */
  cexcPageindex = cexcContainerhead & 0x7f;	/* NEXT CONTAINER PAGE INDEX 7 BITS */
  if (((cexcContainerhead >> 7) & 3) == ZLEFT) {
    jam();
    cexcForward = ZTRUE;
  } else if (((cexcContainerhead >> 7) & 3) == ZRIGHT) {
    jam();
    cexcForward = cminusOne;
  } else {
    jam();
    sendSystemerror(signal);
    cexcForward = 0;	/* DUMMY FOR COMPILER */
  }//if
  if (tnciNextSamePage == ZFALSE) {
    jam();
    /* NEXT CONTAINER IS IN AN OVERFLOW PAGE */
    arrGuard(cexcContainerptr + 1, 2048);
    tnciTmp = excPageptr.p->word32[cexcContainerptr + 1];
    nciOverflowrangeptr.i = fragrecptr.p->overflowdir;
    ptrCheckGuard(nciOverflowrangeptr, cdirrangesize, dirRange);
    arrGuard((tnciTmp >> 8), 256);
    nciOverflowDirptr.i = nciOverflowrangeptr.p->dirArray[tnciTmp >> 8];
    ptrCheckGuard(nciOverflowDirptr, cdirarraysize, directoryarray);
    excPageptr.i = nciOverflowDirptr.p->pagep[tnciTmp & 0xff];
    ptrCheckGuard(excPageptr, cpagesize, page8);
  }//if
}//Dbacc::nextcontainerinfoExp()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF EXPAND/SHRINK MODULE                                                 */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       LOCAL CHECKPOINT MODULE                                                     */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* LCP_FRAGIDREQ                                                                     */
/*                                                     SENDER: LQH,    LEVEL B       */
/*          ENTER  LCP_FRAGIDREQ WITH                                                */
/*                    TUSERPTR                       LQH CONNECTION PTR              */
/*                    TUSERBLOCKREF,                 LQH BLOCK REFERENCE             */
/*                    TCHECKPOINTID,                 THE CHECKPOINT NUMBER TO USE    */
/*                                                     (E.G. 1,2 OR 3)               */
/*                    TABPTR,                        TABLE ID = TABLE RECORD POINTER */
/*                    TFID                           ROOT FRAGMENT ID                */
/*                    CACTIVE_UNDO_FILE_VERSION      UNDO FILE VERSION 0,1,2 OR 3.   */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* LCP_FRAGIDREQ                           REQUEST FOR LIST OF STOPED OPERATION  */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execLCP_FRAGIDREQ(Signal* signal) 
{
  jamEntry();
  tuserptr = signal->theData[0];       /* LQH CONNECTION PTR              */
  tuserblockref = signal->theData[1];  /* LQH BLOCK REFERENCE             */
  tcheckpointid = signal->theData[2];  /* THE CHECKPOINT NUMBER TO USE    */
                                       /*   (E.G. 1,2 OR 3)               */
  tabptr.i = signal->theData[3];       /* TABLE ID = TABLE RECORD POINTER */
  ptrCheck(tabptr, ctablesize, tabrec);
  tfid = signal->theData[4];           /* ROOT FRAGMENT ID                */
  cactiveUndoFileVersion = signal->theData[5]; /* UNDO FILE VERSION 0,1,2 OR 3.   */
  tresult = 0;
  ndbrequire(getrootfragmentrec(signal, rootfragrecptr, tfid));
  ndbrequire(rootfragrecptr.p->rootState == ACTIVEROOT);
  seizeLcpConnectRec(signal);
  initLcpConnRec(signal);
  lcpConnectptr.p->rootrecptr = rootfragrecptr.i;
  rootfragrecptr.p->lcpPtr = lcpConnectptr.i;
  lcpConnectptr.p->localCheckPid = tcheckpointid;
  lcpConnectptr.p->lcpstate = LCP_ACTIVE;
  rootfragrecptr.p->rootState = LCP_CREATION;
  fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
  /* D6 AT FSOPENREQ =#010003FF. */
  tlfrTmp1 = 0x010003ff;      /*  FILE TYPE = .DATA ,VERSION OF FILENAME = 1 */
  tlfrTmp2 = 0x301;	      /* D7 CREATE, WRITE ONLY, TRUNCATE TO ZERO */
  ndbrequire(cfsFirstfreeconnect != RNIL);
  seizeFsConnectRec(signal);
  fsConnectptr.p->fragrecPtr = fragrecptr.i;
  fsConnectptr.p->fsState = WAIT_OPEN_DATA_FILE_FOR_WRITE;
  /* ----------- FILENAME  (FILESYSTEM)/D3/DBACC/"T"TABID/"F"FRAGID/"S"VERSIONID.DATA ------------ */
  /* ************************ */
  /* FSOPENREQ                */
  /* ************************ */
  signal->theData[0] = cownBlockref;
  signal->theData[1] = fsConnectptr.i;
  signal->theData[2] = tabptr.i;                        /* TABLE IDENTITY */
  signal->theData[3] = rootfragrecptr.p->fragmentid[0]; /* FRAGMENT IDENTITY */
  signal->theData[4] = lcpConnectptr.p->localCheckPid;  /* CHECKPOINT ID */
  signal->theData[5] = tlfrTmp1;
  signal->theData[6] = tlfrTmp2;
  sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, 7, JBA);
  return;
}//Dbacc::execLCP_FRAGIDREQ()

/* ******************--------------------------------------------------------------- */
/* FSOPENCONF                                         OPENFILE CONF                  */
/*                                                     SENDER: FS,     LEVEL B       */
/*          ENTER FSOPENCONF WITH                                                    */
/*                    FS_CONNECTPTR,                 FS_CONNECTION PTR               */
/*                    TUSERPOINTER,                  FILE POINTER                    */
/* ******************--------------------------------------------------------------- */
void Dbacc::lcpFsOpenConfLab(Signal* signal) 
{
  fsConnectptr.p->fsPtr = tuserptr;
  fragrecptr.i = fsConnectptr.p->fragrecPtr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  rootfragrecptr.i = fragrecptr.p->myroot;
  fragrecptr.p->activeDataFilePage = 1;	/* ZERO IS KEPT FOR PAGE_ZERO */
  fragrecptr.p->fsConnPtr = fsConnectptr.i;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  if (rootfragrecptr.p->fragmentptr[0] == fragrecptr.i) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
    ptrCheck(fragrecptr, cfragmentsize, fragmentrec);
    /* ----------- FILENAME  (FILESYSTEM)/D3/DBACC/"T"TABID/"F"FRAGID/"S"VERSIONID.DATA ------------ */
    /* D6 AT FSOPENREQ =#010003FF. */
    tlfrTmp1 = 0x010003ff;	/*  FILE TYPE = .DATA ,VERSION OF FILENAME = 1 */
    tlfrTmp2 = 0x301;	        /* D7 CREATE, WRITE ONLY, TRUNCATE TO ZERO */
    ndbrequire(cfsFirstfreeconnect != RNIL);
    seizeFsConnectRec(signal);
    fsConnectptr.p->fragrecPtr = fragrecptr.i;
    fsConnectptr.p->fsState = WAIT_OPEN_DATA_FILE_FOR_WRITE;
    /* ************************ */
    /* FSOPENREQ                */
    /* ************************ */
    signal->theData[0] = cownBlockref;
    signal->theData[1] = fsConnectptr.i;
    signal->theData[2] = rootfragrecptr.p->mytabptr;        /* TABLE IDENTITY */
    signal->theData[3] = rootfragrecptr.p->fragmentid[1];   /* FRAGMENT IDENTITY */
    signal->theData[4] = lcpConnectptr.p->localCheckPid;    /* CHECKPOINT ID */
    signal->theData[5] = tlfrTmp1;
    signal->theData[6] = tlfrTmp2;
    sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, 7, JBA);
    return;
  } else {
    ndbrequire(rootfragrecptr.p->fragmentptr[1] == fragrecptr.i);
  }//if
  /*---- BOTH DATA FILES ARE OPEN------*/
  /* ----IF THE UNDO FILE IS CLOSED , OPEN IT.-----  */
  if (cactiveOpenUndoFsPtr != RNIL) {
    jam();
    sendLcpFragidconfLab(signal);
    return;
  }//if
  cactiveUndoFilePage = 0;
  cprevUndoaddress = cminusOne;
  cundoposition = 0;
  clastUndoPageIdWritten = 0;
  ndbrequire(cfsFirstfreeconnect != RNIL);
  seizeFsConnectRec(signal);
  fsConnectptr.p->fsState = WAIT_OPEN_UNDO_LCP;
  fsConnectptr.p->fsPart = 0;	                        /* FILE INDEX, SECOND FILE IN THE DIRECTORY  */
  cactiveOpenUndoFsPtr = fsConnectptr.i;
  cactiveRootfrag = rootfragrecptr.i;
  tlfrTmp1 = 1;	                                        /* FILE VERSION */
  tlfrTmp1 = (tlfrTmp1 << 8) + ZLOCALLOGFILE;	        /* .LOCLOG = 2 */
  tlfrTmp1 = (tlfrTmp1 << 8) + 4;	                /* ROOT DIRECTORY = D4 */
  tlfrTmp1 = (tlfrTmp1 << 8) + fsConnectptr.p->fsPart;	/*        P2  */
  tlfrTmp2 = 0x302;	                                /* D7 CREATE , READ / WRITE , TRUNCATE TO ZERO */
  /* ---FILE NAME "D4"/"DBACC"/LCP_CONNECTPTR:LOCAL_CHECK_PID/FS_CONNECTPTR:FS_PART".LOCLOG-- */
  /* ************************ */
  /* FSOPENREQ                */
  /* ************************ */
  signal->theData[0] = cownBlockref;
  signal->theData[1] = fsConnectptr.i;
  signal->theData[2] = cminusOne;         /* #FFFFFFFF */
  signal->theData[3] = cminusOne;         /* #FFFFFFFF */
  signal->theData[4] = cactiveUndoFileVersion;
  /* A GROUP OF UNDO FILES WHICH ARE UPDATED */
  signal->theData[5] = tlfrTmp1;
  signal->theData[6] = tlfrTmp2;
  sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, 7, JBA);
  return;
}//Dbacc::lcpFsOpenConfLab()

void Dbacc::lcpOpenUndofileConfLab(Signal* signal) 
{
  ptrGuard(fsConnectptr);
  fsConnectptr.p->fsState = WAIT_NOTHING;
  rootfragrecptr.i = cactiveRootfrag;
  ptrCheck(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  fsConnectptr.p->fsPtr = tuserptr;
  sendLcpFragidconfLab(signal);
  return;
}//Dbacc::lcpOpenUndofileConfLab()

void Dbacc::sendLcpFragidconfLab(Signal* signal) 
{
  ptrGuard(rootfragrecptr);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  /* ************************ */
  /* LCP_FRAGIDCONF           */
  /* ************************ */
  signal->theData[0] = lcpConnectptr.p->lcpUserptr;
  signal->theData[1] = lcpConnectptr.i;
  signal->theData[2] = 2;
  /* NO OF LOCAL FRAGMENTS */
  signal->theData[3] = rootfragrecptr.p->fragmentid[0];
  signal->theData[4] = rootfragrecptr.p->fragmentid[1];
  signal->theData[5] = RNIL;
  signal->theData[6] = RNIL;
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_LCP_FRAGIDCONF, signal, 7, JBB);
  return;
}//Dbacc::sendLcpFragidconfLab()

/* ******************--------------------------------------------------------------- */
/* LCP_HOLDOPERATION                           REQUEST FOR LIST OF STOPED OPERATION  */
/*                                                     SENDER: LQH,    LEVEL B       */
/*         ENTER  LCP_HOLDOPREQ WITH                                                 */
/*                    LCP_CONNECTPTR                CONNECTION POINTER               */
/*                    TFID,                         LOCAL FRAGMENT ID                */
/*                    THOLD_PREV_SENT_OP            NR OF SENT OPERATIONS AT         */
/*                                                  PREVIOUS SIGNALS                 */
/*                    TLQH_POINTER                  LQH USER POINTER                 */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* LCP_HOLDOPERATION                           REQUEST FOR LIST OF STOPED OPERATION  */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execLCP_HOLDOPREQ(Signal* signal) 
{
  Uint32 tholdPrevSentOp;

  jamEntry();
  lcpConnectptr.i = signal->theData[0];    /* CONNECTION POINTER              */
  tfid = signal->theData[1];               /* LOCAL FRAGMENT ID               */
  tholdPrevSentOp = signal->theData[2];    /* NR OF SENT OPERATIONS AT        */
                                           /* PREVIOUS SIGNALS                */
  tlqhPointer = signal->theData[3];        /* LQH USER POINTER                */

  tresult = 0;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  ndbrequire(lcpConnectptr.p->lcpstate == LCP_ACTIVE);
  rootfragrecptr.i = lcpConnectptr.p->rootrecptr;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  if (rootfragrecptr.p->fragmentid[0] == tfid) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  } else {
    ndbrequire(rootfragrecptr.p->fragmentid[1] == tfid);
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
  }//if
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  fragrecptr.p->lcpLqhPtr = tlqhPointer;
  if (tholdPrevSentOp != 0) {
    ndbrequire(fragrecptr.p->fragState == SEND_QUE_OP);
  } else if (tholdPrevSentOp == 0) {
    jam();
    fragrecptr.p->fragState = SEND_QUE_OP;
    fragrecptr.p->stopQueOp = ZTRUE;
    fragrecptr.p->sentWaitInQueOp = fragrecptr.p->firstWaitInQueOp;
  }//if
  tholdSentOp = 0;	/* NR OF OPERATION WHICH ARE SENT THIS TIME */
  operationRecPtr.i = fragrecptr.p->sentWaitInQueOp;

  /* --------------------------------------------- */
  /* GO THROUGH ALL OPERATION IN THE WAIT          */
  /* LIST AND SEND THE LQH CONNECTION  PTR OF THE  */
  /* OPERATIONS TO THE LQH BLOCK. MAX 23 0PERATION */
  /* PER SIGNAL                                    */
  /* --------------------------------------------- */
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    ckeys[tholdSentOp] = operationRecPtr.p->userptr;
    operationRecPtr.i = operationRecPtr.p->nextQueOp;
    tholdSentOp++;
    if ((tholdSentOp >= 23) &&
        (operationRecPtr.i != RNIL)) {
      jam();
      /* ----------------------------------------------- */
      /* THERE IS MORE THAN 23 WAIT OPERATION. WE        */
      /* HAVE TO SEND THESE 23 AND WAITE FOR NEXT SIGNAL */
      /* ----------------------------------------------- */
      tholdMore = ZTRUE;	/* SECOUND DATA AT THE CONF SIGNAL , = MORE */
      fragrecptr.p->sentWaitInQueOp = operationRecPtr.i;
      sendholdconfsignalLab(signal);
      return;
    }//if
  }//while
  /* ----------------------------------------------- */
  /* OPERATION_REC_PTR = RNIL                        */
  /* THERE IS NO MORE WAITING OPERATION, STATE OF    */
  /* THE FRAGMENT RRECORD IS CHANGED AND RETURN      */
  /* SIGNAL IS SENT                                  */
  /* ----------------------------------------------- */
  fragrecptr.p->sentWaitInQueOp = RNIL;
  tholdMore = ZFALSE;	/* SECOND DATA AT THE CONF SIGNAL , = NOT MORE */
  fragrecptr.p->fragState = WAIT_ACC_LCPREQ;
  sendholdconfsignalLab(signal);
  return;
}//Dbacc::execLCP_HOLDOPREQ()

void Dbacc::sendholdconfsignalLab(Signal* signal) 
{
  tholdMore = (tholdMore << 16) + tholdSentOp;
  /* SECOND SIGNAL DATA, LENGTH + MORE */
  /* ************************ */
  /* LCP_HOLDOPCONF           */
  /* ************************ */
  signal->theData[0] = fragrecptr.p->lcpLqhPtr;
  signal->theData[1] = tholdMore;
  signal->theData[2] = ckeys[0];
  signal->theData[3] = ckeys[1];
  signal->theData[4] = ckeys[2];
  signal->theData[5] = ckeys[3];
  signal->theData[6] = ckeys[4];
  signal->theData[7] = ckeys[5];
  signal->theData[8] = ckeys[6];
  signal->theData[9] = ckeys[7];
  signal->theData[10] = ckeys[8];
  signal->theData[11] = ckeys[9];
  signal->theData[12] = ckeys[10];
  signal->theData[13] = ckeys[11];
  signal->theData[14] = ckeys[12];
  signal->theData[15] = ckeys[13];
  signal->theData[16] = ckeys[14];
  signal->theData[17] = ckeys[15];
  signal->theData[18] = ckeys[16];
  signal->theData[19] = ckeys[17];
  signal->theData[20] = ckeys[18];
  signal->theData[21] = ckeys[19];
  signal->theData[22] = ckeys[20];
  signal->theData[23] = ckeys[21];
  signal->theData[24] = ckeys[22];
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_LCP_HOLDOPCONF, signal, 25, JBA);
  return;
}//Dbacc::sendholdconfsignalLab()

/**
 * execACC_LCPREQ                                        
 * Perform local checkpoint of a fragment
 *
 *  SENDER: LQH,    LEVEL B
 *  ENTER ACC_LCPREQ WITH 
 *  LCP_CONNECTPTR,                OPERATION RECORD PTR
 *  TLCP_LQH_CHECK_V,              LQH'S  LOCAL FRAG CHECK VALUE
 *  TLCP_LOCAL_FRAG_ID,            LOCAL FRAG ID
 *
 */
void Dbacc::execACC_LCPREQ(Signal* signal) 
{
  Uint32 tlcpLocalFragId;
  Uint32 tlcpLqhCheckV;

  jamEntry();
  lcpConnectptr.i = signal->theData[0];   // CONNECTION  PTR
  tlcpLqhCheckV = signal->theData[1];     // LQH'S  LOCAL FRAG CHECK VALUE
  tlcpLocalFragId = signal->theData[2];   // LOCAL FRAG ID
  tresult = 0;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  ndbrequire(lcpConnectptr.p->lcpstate == LCP_ACTIVE);

  rootfragrecptr.i = lcpConnectptr.p->rootrecptr;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  if (rootfragrecptr.p->fragmentid[0] == tlcpLocalFragId) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
  } else {
    ndbrequire(rootfragrecptr.p->fragmentid[1] == tlcpLocalFragId);
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
  }//if
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  ndbrequire(fragrecptr.p->fragState == WAIT_ACC_LCPREQ);
  fragrecptr.p->lcpLqhPtr = tlcpLqhCheckV;

  Page8Ptr zeroPagePtr;
  seizeLcpPage(zeroPagePtr);
  fragrecptr.p->zeroPagePtr = zeroPagePtr.i;
  fragrecptr.p->prevUndoposition = cminusOne;
  initRootFragPageZero(rootfragrecptr, zeroPagePtr);
  initFragPageZero(fragrecptr, zeroPagePtr);
  /*-----------------------------------------------------------------*/
  /*       SEIZE ZERO PAGE FIRST AND THEN SEIZE DATA PAGES IN        */
  /*       BACKWARDS ORDER. THIS IS TO ENSURE THAT WE GET THE PAGES  */
  /*       IN ORDER. ON WINDOWS NT THIS WILL BE A BENEFIT SINCE WE   */
  /*       CAN THEN DO 1 WRITE_FILE INSTEAD OF 8.                    */
  /*       WHEN WE RELEASE THE PAGES WE RELEASE THEM IN THE OPPOSITE */
  /*       ORDER.                                                    */
  /*-----------------------------------------------------------------*/
  for (Uint32 taspTmp = ZWRITEPAGESIZE - 1; (Uint32)~taspTmp; taspTmp--) {
    Page8Ptr dataPagePtr;
    jam();
    ndbrequire(fragrecptr.p->datapages[taspTmp] == RNIL);
    seizeLcpPage(dataPagePtr);
    fragrecptr.p->datapages[taspTmp] = dataPagePtr.i;
  }//for
  fragrecptr.p->lcpMaxDirIndex = fragrecptr.p->dirsize;
  fragrecptr.p->lcpMaxOverDirIndex = fragrecptr.p->lastOverIndex;
  fragrecptr.p->createLcp = ZTRUE;
  operationRecPtr.i = fragrecptr.p->lockOwnersList;
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);

    if ((operationRecPtr.p->operation == ZINSERT) ||
	(operationRecPtr.p->elementIsDisappeared == ZTRUE)){
      /*******************************************************************
       * Only log inserts and elements that are marked as dissapeared.
       * All other operations update the element header and that is handled
       * when pages are written to disk
       ********************************************************************/
      undopageptr.i = (cundoposition>>ZUNDOPAGEINDEXBITS) & (cundopagesize-1);
      ptrAss(undopageptr, undopage);
      theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
      tundoindex = theadundoindex + ZUNDOHEADSIZE;

      writeUndoOpInfo(signal);/* THE INFORMATION ABOUT ELEMENT HEADER, STORED*/
                              /* IN OP REC, IS WRITTEN AT UNDO PAGES */
      cundoElemIndex = 0;/* DEFAULT VALUE USED BY WRITE_UNDO_HEADER SUBROTINE */
      writeUndoHeader(signal, RNIL, UndoHeader::ZOP_INFO); /* WRITE THE HEAD OF THE UNDO ELEMENT */
      checkUndoPages(signal);	/* SEND UNDO PAGE TO DISK WHEN A GROUP OF  */
                                /* UNDO PAGES,CURRENTLY 8, IS FILLED */
    }//if

    operationRecPtr.i = operationRecPtr.p->nextLockOwnerOp;
  }//while

  signal->theData[0] = fragrecptr.p->lcpLqhPtr;
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_ACC_LCPSTARTED, 
	     signal, 1, JBA);

  fragrecptr.p->activeDataPage = 0;
  fragrecptr.p->lcpDirIndex = 0;
  fragrecptr.p->fragState = LCP_SEND_PAGES;

  signal->theData[0] = lcpConnectptr.i;
  signal->theData[1] = fragrecptr.i;
  sendSignal(cownBlockref, GSN_ACC_SAVE_PAGES, signal, 2, JBB);
  return;
}//Dbacc::execACC_LCPREQ()

/* ******************--------------------------------------------------------------- */
/* ACC_SAVE_PAGES           A GROUP OF PAGES IS ALLOCATED. THE PAGES AND OVERFLOW    */
/*                          PAGES OF THE FRAGMENT ARE COPIED IN THEM AND IS SEND TO  */
/*                          THE DATA FILE OF THE CHECK POINT.                        */
/*                                                     SENDER: ACC,    LEVEL B       */
/*         ENTER ACC_SAVE_PAGES WITH                                                 */
/*                   LCP_CONNECTPTR,                 CONNECTION RECORD PTR           */
/*                   FRAGRECPTR                      FRAGMENT RECORD PTR             */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_SAVE_PAGES            REQUEST TO SEND THE PAGE  TO DISK                       */
/* ******************------------------------------+   UNDO PAGES                    */
/*   SENDER: ACC,    LEVEL B       */
void Dbacc::execACC_SAVE_PAGES(Signal* signal) 
{
  jamEntry();
  lcpConnectptr.i = signal->theData[0];
  /* CONNECTION RECORD PTR           */
  fragrecptr.i = signal->theData[1];
  /* FRAGMENT RECORD PTR             */
  tresult = 0;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  if (lcpConnectptr.p->lcpstate != LCP_ACTIVE) {
    jam();
    sendSystemerror(signal);
    return;
  }//if
  if (ERROR_INSERTED(3000)) {
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    rootfragrecptr.i = fragrecptr.p->myroot;
    ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
    if (rootfragrecptr.p->mytabptr == c_errorInsert3000_TableId){
      ndbout << "Delay writing of datapages" << endl;
      // Delay writing of pages
      jam();
      sendSignalWithDelay(cownBlockref, GSN_ACC_SAVE_PAGES, signal, 1000, 2);
      return;
    }
  }
  if (clblPageCounter == 0) {
    jam();
    signal->theData[0] = lcpConnectptr.i;
    signal->theData[1] = fragrecptr.i;
    sendSignalWithDelay(cownBlockref, GSN_ACC_SAVE_PAGES, signal, 100, 2);
    return;
  } else {
    jam();
    clblPageCounter = clblPageCounter - 1;
  }//if
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  if (fragrecptr.p->fragState == LCP_SEND_PAGES) {
    jam();
    savepagesLab(signal);
    return;
  } else {
    if (fragrecptr.p->fragState == LCP_SEND_OVER_PAGES) {
      jam();
      saveOverPagesLab(signal);
      return;
    } else {
      ndbrequire(fragrecptr.p->fragState == LCP_SEND_ZERO_PAGE);
      jam();
      saveZeroPageLab(signal);
      return;
    }//if
  }//if
}//Dbacc::execACC_SAVE_PAGES()

void Dbacc::savepagesLab(Signal* signal) 
{
  DirRangePtr spDirRangePtr;
  DirectoryarrayPtr spDirptr;
  Page8Ptr aspPageptr;
  Page8Ptr aspCopyPageptr;
  Uint32 taspDirindex;
  Uint32 taspDirIndex;
  Uint32 taspIndex;

  if ((fragrecptr.p->lcpDirIndex >= fragrecptr.p->dirsize) ||
      (fragrecptr.p->lcpDirIndex >= fragrecptr.p->lcpMaxDirIndex)) {
    jam();
    endsavepageLab(signal);
    return;
  }//if
  /* SOME EXPAND PROCESSES HAVE BEEN PERFORMED. */
  /* THE ADDED PAGE ARE NOT SENT TO DISK */
  arrGuard(fragrecptr.p->activeDataPage, 8);
  aspCopyPageptr.i = fragrecptr.p->datapages[fragrecptr.p->activeDataPage];
  ptrCheckGuard(aspCopyPageptr, cpagesize, page8);
  taspDirindex = fragrecptr.p->lcpDirIndex;	/* DIRECTORY OF ACTIVE PAGE */
  spDirRangePtr.i = fragrecptr.p->directory;
  taspDirIndex = taspDirindex >> 8;
  taspIndex = taspDirindex & 0xff;
  ptrCheckGuard(spDirRangePtr, cdirrangesize, dirRange);
  arrGuard(taspDirIndex, 256);
  spDirptr.i = spDirRangePtr.p->dirArray[taspDirIndex];
  ptrCheckGuard(spDirptr, cdirarraysize, directoryarray);
  aspPageptr.i = spDirptr.p->pagep[taspIndex];
  ptrCheckGuard(aspPageptr, cpagesize, page8);
  ndbrequire(aspPageptr.p->word32[ZPOS_PAGE_ID] == fragrecptr.p->lcpDirIndex);
  lcnPageptr = aspPageptr;
  lcnCopyPageptr = aspCopyPageptr;
  lcpCopyPage(signal);
  fragrecptr.p->lcpDirIndex++;
  fragrecptr.p->activeDataPage++;
  if (fragrecptr.p->activeDataPage < ZWRITEPAGESIZE) {
    jam();
    signal->theData[0] = lcpConnectptr.i;
    signal->theData[1] = fragrecptr.i;
    sendSignal(cownBlockref, GSN_ACC_SAVE_PAGES, signal, 2, JBB);
    return;
  }//if
  senddatapagesLab(signal);
  return;
}//Dbacc::savepagesLab()

/*  FRAGRECPTR:ACTIVE_DATA_PAGE = ZWRITEPAGESIZE */
/*  SEND A GROUP OF PAGES TO DISK     */
void Dbacc::senddatapagesLab(Signal* signal) 
{
  fsConnectptr.i = fragrecptr.p->fsConnPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  seizeFsOpRec(signal);
  initFsOpRec(signal);
  fsOpptr.p->fsOpstate = WAIT_WRITE_DATA;
  ndbrequire(fragrecptr.p->activeDataPage <= 8);
  for (Uint32 i = 0; i < fragrecptr.p->activeDataPage; i++) {
    signal->theData[i + 6] = fragrecptr.p->datapages[i];
  }//for
  signal->theData[fragrecptr.p->activeDataPage + 6] = fragrecptr.p->activeDataFilePage;
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsOpptr.i;
  signal->theData[3] = 0x2;
  signal->theData[4] = ZPAGE8_BASE_ADD;
  signal->theData[5] = fragrecptr.p->activeDataPage;
  sendSignal(NDBFS_REF, GSN_FSWRITEREQ, signal, 15, JBA);
  return;
}//Dbacc::senddatapagesLab()

void Dbacc::endsavepageLab(Signal* signal) 
{
  Page8Ptr espPageidptr;

  espPageidptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(espPageidptr, cpagesize, page8);
  dbgWord32(espPageidptr, ZPAGEZERO_NO_PAGES, fragrecptr.p->lcpDirIndex);
  espPageidptr.p->word32[ZPAGEZERO_NO_PAGES] = fragrecptr.p->lcpDirIndex;
  fragrecptr.p->fragState = LCP_SEND_OVER_PAGES;
  fragrecptr.p->noOfStoredOverPages = 0;
  fragrecptr.p->lcpDirIndex = 0;
  saveOverPagesLab(signal);
  return;
}//Dbacc::endsavepageLab()

/* ******************--------------------------------------------------------------- */
/* ACC_SAVE_OVER_PAGES                   CONTINUE SAVING THE LEFT OVERPAGES.         */
/* ******************--------------------------------------------------------------- */
void Dbacc::saveOverPagesLab(Signal* signal) 
{
  DirRangePtr sopDirRangePtr;
  DirectoryarrayPtr sopOverflowDirptr;
  Page8Ptr sopPageptr;
  Page8Ptr sopCopyPageptr;
  Uint32 tsopDirindex;
  Uint32 tsopDirInd;
  Uint32 tsopIndex;

  if ((fragrecptr.p->lcpDirIndex >= fragrecptr.p->lastOverIndex) ||
      (fragrecptr.p->lcpDirIndex >= fragrecptr.p->lcpMaxOverDirIndex)) {
    jam();
    endsaveoverpageLab(signal);
    return;
  }//if
  arrGuard(fragrecptr.p->activeDataPage, 8);
  sopCopyPageptr.i = fragrecptr.p->datapages[fragrecptr.p->activeDataPage];
  ptrCheckGuard(sopCopyPageptr, cpagesize, page8);
  tsopDirindex = fragrecptr.p->lcpDirIndex;
  sopDirRangePtr.i = fragrecptr.p->overflowdir;
  tsopDirInd = tsopDirindex >> 8;
  tsopIndex = tsopDirindex & 0xff;
  ptrCheckGuard(sopDirRangePtr, cdirrangesize, dirRange);
  arrGuard(tsopDirInd, 256);
  sopOverflowDirptr.i = sopDirRangePtr.p->dirArray[tsopDirInd];
  ptrCheckGuard(sopOverflowDirptr, cdirarraysize, directoryarray);
  sopPageptr.i = sopOverflowDirptr.p->pagep[tsopIndex];
  fragrecptr.p->lcpDirIndex++;
  if (sopPageptr.i != RNIL) {
    jam();
    ptrCheckGuard(sopPageptr, cpagesize, page8);
    ndbrequire(sopPageptr.p->word32[ZPOS_PAGE_ID] == tsopDirindex);
    ndbrequire(((sopPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) != ZNORMAL_PAGE_TYPE);
    lcnPageptr = sopPageptr;
    lcnCopyPageptr = sopCopyPageptr;
    lcpCopyPage(signal);
    fragrecptr.p->noOfStoredOverPages++;
    fragrecptr.p->activeDataPage++;
    if ((sopPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] == 0)) {
      //ndbrequire(((sopPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == ZOVERFLOW_PAGE_TYPE);
      if (((sopPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == 
	  ZOVERFLOW_PAGE_TYPE) {
	/*--------------------------------------------------------------------------------*/
	/*       THE PAGE IS EMPTY AND WAITING TO BE RELEASED. IT COULD NOT BE RELEASED   */
	/*       EARLIER SINCE IT WAS PART OF A LOCAL CHECKPOINT.                         */
	/*--------------------------------------------------------------------------------*/
	jam();
	ropPageptr = sopPageptr;
	releaseOverpage(signal);
      } else if (((sopPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == 
		 ZLONG_PAGE_TYPE)  {
	//----------------------------------------------------------------------
	// The long key page is empty, release it.
	//----------------------------------------------------------------------
	jam();
	rlopPageptr = sopPageptr;
	releaseLongPage(signal);
      } else {
        jam();
	sendSystemerror(signal);
      }
    }//if
  }
  if (fragrecptr.p->activeDataPage == ZWRITEPAGESIZE) {
    jam();
    senddatapagesLab(signal);
    return;
  }//if
  signal->theData[0] = lcpConnectptr.i;
  signal->theData[1] = fragrecptr.i;
  sendSignal(cownBlockref, GSN_ACC_SAVE_PAGES, signal, 2, JBB);
  return;
}//Dbacc::saveOverPagesLab()

void Dbacc::endsaveoverpageLab(Signal* signal) 
{
  Page8Ptr esoPageidptr;

  esoPageidptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(esoPageidptr, cpagesize, page8);
  dbgWord32(esoPageidptr, ZPAGEZERO_NO_OVER_PAGE, fragrecptr.p->noOfStoredOverPages);
  esoPageidptr.p->word32[ZPAGEZERO_NO_OVER_PAGE] = fragrecptr.p->noOfStoredOverPages;
  fragrecptr.p->fragState = LCP_SEND_ZERO_PAGE;
  if (fragrecptr.p->activeDataPage != 0) {
    jam();
    senddatapagesLab(signal);	/* SEND LEFT PAGES TO DISK */
    return;
  }//if
  saveZeroPageLab(signal);
  return;
}//Dbacc::endsaveoverpageLab()

/* ******************--------------------------------------------------------------- */
/* ACC_SAVE_ZERO_PAGE      PAGE ZERO IS SENT TO DISK.IT IS THE LAST STAGE AT  THE    */
/*                         CREATION LCP. ACC_LCPCONF IS RETURND.                     */
/* ******************--------------------------------------------------------------- */
void Dbacc::saveZeroPageLab(Signal* signal) 
{
  Page8Ptr szpPageidptr;
  Uint32 Tchs;
  Uint32 Ti;

  fragrecptr.p->createLcp = ZFALSE;
  fsConnectptr.i = fragrecptr.p->fsConnPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  szpPageidptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(szpPageidptr, cpagesize, page8);
  dbgWord32(szpPageidptr, ZPAGEZERO_PREV_UNDOP, fragrecptr.p->prevUndoposition);
  szpPageidptr.p->word32[ZPAGEZERO_PREV_UNDOP] = fragrecptr.p->prevUndoposition;
  dbgWord32(szpPageidptr, ZPAGEZERO_NEXT_UNDO_FILE, cactiveUndoFileVersion);
  szpPageidptr.p->word32[ZPAGEZERO_NEXT_UNDO_FILE] = cactiveUndoFileVersion;
  fragrecptr.p->fragState = WAIT_ZERO_PAGE_STORED;

  /* --------------------------------------------------------------------------------- */
  // Calculate the checksum and store it for the zero page of the fragment.
  /* --------------------------------------------------------------------------------- */
  szpPageidptr.p->word32[ZPOS_CHECKSUM] = 0;
  Tchs = 0;
  for (Ti = 0; Ti < 2048; Ti++) {
    Tchs = Tchs ^ szpPageidptr.p->word32[Ti];
  }//for
  szpPageidptr.p->word32[ZPOS_CHECKSUM] = Tchs;
  dbgWord32(szpPageidptr, ZPOS_CHECKSUM, Tchs);

  seizeFsOpRec(signal);
  initFsOpRec(signal);
  fsOpptr.p->fsOpstate = WAIT_WRITE_DATA;
  if (clblPageCounter > 0) {
    jam();
    clblPageCounter = clblPageCounter - 1;
  } else {
    jam();
    clblPageOver = clblPageOver + 1;
  }//if
  /* ************************ */
  /* FSWRITEREQ               */
  /* ************************ */
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsOpptr.i;
  signal->theData[3] = 0x10;
  /* FLAG = LIST MEM PAGES, LIST FILE PAGES */
  /* SYNC FILE AFTER WRITING */
  signal->theData[4] = ZPAGE8_BASE_ADD;
  signal->theData[5] = 1;
  /* NO OF  PAGES */
  signal->theData[6] = fragrecptr.p->zeroPagePtr;
  /* ZERO PAGE */
  signal->theData[7] = 0;
  sendSignal(NDBFS_REF, GSN_FSWRITEREQ, signal, 8, JBA);
  /* ZERO PAGE AT DATA FILE */
  return;
}//Dbacc::saveZeroPageLab()

/* ******************--------------------------------------------------------------- */
/* FSWRITECONF                                         OPENFILE CONF                 */
/*              ENTER FSWRITECONF WITH                 SENDER: FS,     LEVEL B       */
/*                    FS_OPPTR                         FS_CONNECTION PTR             */
/* ******************--------------------------------------------------------------- */
void Dbacc::lcpCloseDataFileLab(Signal* signal) 
{
  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  fsConnectptr.p->fsState = LCP_CLOSE_DATA;
  /* ************************ */
  /* FSCLOSEREQ               */
  /* ************************ */
  /* CLOSE DATA FILE */
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = ZFALSE;
  sendSignal(NDBFS_REF, GSN_FSCLOSEREQ, signal, 4, JBA);
  /* FLAG = 0, DO NOT DELETE FILE */
  return;
}//Dbacc::lcpCloseDataFileLab()

void Dbacc::checkSyncUndoPagesLab(Signal* signal) 
{
  fragrecptr.i = fsConnectptr.p->fragrecPtr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  releaseFsConnRec(signal);
  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  switch (lcpConnectptr.p->syncUndopageState) {
  case WAIT_NOTHING:
    jam();
    lcpConnectptr.p->syncUndopageState = WAIT_ONE_CONF;
    break;
  case WAIT_ONE_CONF:
    jam();
    lcpConnectptr.p->syncUndopageState = WAIT_TWO_CONF;
    break;
  default:
    jam();
    sendSystemerror(signal);
    return;
    break;
  }//switch

  /* ACTIVE UNDO PAGE ID */
  Uint32 tundoPageId = cundoposition >> ZUNDOPAGEINDEXBITS;
  tmp1 = tundoPageId - (tundoPageId & (ZWRITE_UNDOPAGESIZE - 1));
  /* START PAGE OF THE LAST UNDO PAGES GROUP */
  tmp2 = (tundoPageId - tmp1) + 1;	/* NO OF LEFT UNDO PAGES */
  tmp1 = tmp1 & (cundopagesize - 1);	/* 1 MBYTE PAGE WINDOW IN MEMORY */
  fsConnectptr.i = cactiveOpenUndoFsPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  seizeFsOpRec(signal);
  initFsOpRec(signal);
  fsOpptr.p->fsOpstate = WAIT_WRITE_UNDO;
  fsOpptr.p->fsOpMemPage = tundoPageId; /* RECORD MEMORY PAGE WRITTEN */
  if (clblPageCounter >= (4 * tmp2)) {
    jam();
    clblPageCounter = clblPageCounter - (4 * tmp2);
  } else {
    jam();
    clblPageOver = clblPageOver + ((4 * tmp2) - clblPageCounter);
    clblPageCounter = 0;
  }//if
  /* ************************ */
  /* FSWRITEREQ               */
  /* ************************ */
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsOpptr.i;
  /* FLAG = START MEM PAGES, START FILE PAGES */
  /* SYNC FILE AFTER WRITING */
  signal->theData[3] = 0x11;                                        
  signal->theData[4] = ZUNDOPAGE_BASE_ADD;
  /* NO OF UNDO PAGES */
  signal->theData[5] = tmp2;                       
  /* FIRST MEMORY PAGE */
  signal->theData[6] = tmp1;
  /* ACTIVE PAGE AT UNDO FILE */                                          
  signal->theData[7] = cactiveUndoFilePage;
  sendSignal(NDBFS_REF, GSN_FSWRITEREQ, signal, 8, JBA);

  return;
}//Dbacc::checkSyncUndoPagesLab()

void Dbacc::checkSendLcpConfLab(Signal* signal) 
{
  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  ndbrequire(lcpConnectptr.p->lcpstate == LCP_ACTIVE);
  switch (lcpConnectptr.p->syncUndopageState) {
  case WAIT_ONE_CONF:
    jam();
    lcpConnectptr.p->syncUndopageState = WAIT_NOTHING;
    break;
  case WAIT_TWO_CONF:
    jam();
    lcpConnectptr.p->syncUndopageState = WAIT_ONE_CONF;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  lcpConnectptr.p->noOfLcpConf++;
  ndbrequire(lcpConnectptr.p->noOfLcpConf <= 2);
  fragrecptr.p->fragState = ACTIVEFRAG;
  rlpPageptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(rlpPageptr, cpagesize, page8);
  releaseLcpPage(signal);
  fragrecptr.p->zeroPagePtr = RNIL;
  for (Uint32 i = 0; i < ZWRITEPAGESIZE; i++) {
    jam();
    if (fragrecptr.p->datapages[i] != RNIL) {
      jam();
      rlpPageptr.i = fragrecptr.p->datapages[i];
      ptrCheckGuard(rlpPageptr, cpagesize, page8);
      releaseLcpPage(signal);
      fragrecptr.p->datapages[i] = RNIL;
    }//if
  }//for
  signal->theData[0] = fragrecptr.p->lcpLqhPtr;
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_ACC_LCPCONF, signal, 1, JBB);
  if (lcpConnectptr.p->noOfLcpConf == 2) {
    jam();
    releaseLcpConnectRec(signal);
    rootfragrecptr.i = fragrecptr.p->myroot;
    ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
    rootfragrecptr.p->rootState = ACTIVEROOT;
  }//if
}//Dbacc::checkSendLcpConfLab()

/* ******************--------------------------------------------------------------- */
/* ACC_CONTOPREQ                                                                     */
/*                                                     SENDER: LQH,    LEVEL B       */
/*          ENTER ACC_CONTOPREQ WITH                                                 */
/*                    LCP_CONNECTPTR                                                 */
/*                    TMP1                             LOCAL FRAG ID                 */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_CONTOPREQ                                        COMMIT  TRANSACTION          */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACC_CONTOPREQ(Signal* signal) 
{
  Uint32 tcorLocalFrag;

  jamEntry();
  lcpConnectptr.i = signal->theData[0];
  /* CONNECTION PTR                  */
  tcorLocalFrag = signal->theData[1];
  /* LOCAL FRAG ID                   */
  tresult = 0;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  ndbrequire(lcpConnectptr.p->lcpstate == LCP_ACTIVE);
  rootfragrecptr.i = lcpConnectptr.p->rootrecptr;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  if (rootfragrecptr.p->fragmentid[0] == tcorLocalFrag) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  } else {
    ndbrequire(rootfragrecptr.p->fragmentid[1] == tcorLocalFrag);
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  }//if
  operationRecPtr.i = fragrecptr.p->firstWaitInQueOp;
  fragrecptr.p->sentWaitInQueOp = RNIL;
  fragrecptr.p->stopQueOp = ZFALSE;
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    if (operationRecPtr.p->opState == WAIT_EXE_OP) {
      jam();
      //------------------------------------------------------------
      // Indicate that we are now a normal waiter in the queue. We
      // will remove the operation from the queue as part of starting
      // operation again.
      //------------------------------------------------------------
      operationRecPtr.p->opState = WAIT_IN_QUEUE;
      executeNextOperation(signal);
    }//if
    operationRecPtr.i = operationRecPtr.p->nextQueOp;
  }//while
  signal->theData[0] = fragrecptr.p->lcpLqhPtr;
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_ACC_CONTOPCONF, signal, 1, JBA);
  return;	/* ALL QUEUED OPERATION ARE RESTARTED IF NEEDED. */
}//Dbacc::execACC_CONTOPREQ()

/* ******************--------------------------------------------------------------- */
/* END_LCPREQ                                        END  OF  LOCAL CHECK POINT      */
/*          ENTER END_LCPREQ WITH                     SENDER: LQH,    LEVEL B        */
/*                      CLQH_PTR,                     LQH  PTR                       */
/*                      CLQH_BLOCK_REF                LQH  BLOCK REF                 */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* END_LCPREQ                                       PERFORM A LOCAL CHECK POINT      */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execEND_LCPREQ(Signal* signal) 
{
  jamEntry();
  clqhPtr = signal->theData[0];
  /*  LQH  PTR                       */
  clqhBlockRef = signal->theData[1];
  /*  LQH  BLOCK REF                 */
  tresult = 0;
  fsConnectptr.i = cactiveOpenUndoFsPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  fsConnectptr.p->fsState = WAIT_CLOSE_UNDO;	/* CLOSE FILE AFTER WRITTING */
  /* ************************ */
  /* FSCLOSEREQ               */
  /* ************************ */
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = ZFALSE;
  sendSignal(NDBFS_REF, GSN_FSCLOSEREQ, signal, 4, JBA);
  /* FLAG = 0, DO NOT DELETE FILE */
  cactiveUndoFileVersion = RNIL;
  cactiveOpenUndoFsPtr = RNIL;
  /* ************************ */
  /* END_LCPCONF              */
  /* ************************ */
  signal->theData[0] = clqhPtr;
  sendSignal(clqhBlockRef, GSN_END_LCPCONF, signal, 1, JBB);
  return;
}//Dbacc::execEND_LCPREQ()

/*-----------------------------------------------------------------*/
/*       WHEN WE COPY THE PAGE WE ALSO WRITE THE ELEMENT HEADER AS */
/*       UNLOCKED IF THEY ARE CURRENTLY LOCKED.                    */
/*-----------------------------------------------------------------*/
void Dbacc::lcpCopyPage(Signal* signal) 
{
  Uint32 tlcnNextContainer;
  Uint32 tlcnTmp;
  Uint32 tlcnConIndex;
  Uint32 tlcnIndex;
  Uint32 Tmp1;
  Uint32 Tmp2;
  Uint32 Tmp3;
  Uint32 Tmp4;
  Uint32 Ti;
  Uint32 Tchs;
  Uint32 Tlimit;

  Tchs = 0;
  lupPageptr.p = lcnCopyPageptr.p;
  lcnPageptr.p->word32[ZPOS_CHECKSUM] = Tchs;
  for (Ti = 0; Ti < 32 ; Ti++) {
    Tlimit = 16 + (Ti << 6);
    for (tlcnTmp = (Ti << 6); tlcnTmp < Tlimit; tlcnTmp ++) {
      Tmp1 = lcnPageptr.p->word32[tlcnTmp];
      Tmp2 = lcnPageptr.p->word32[tlcnTmp + 16];
      Tmp3 = lcnPageptr.p->word32[tlcnTmp + 32];
      Tmp4 = lcnPageptr.p->word32[tlcnTmp + 48];

      lcnCopyPageptr.p->word32[tlcnTmp]      = Tmp1;
      lcnCopyPageptr.p->word32[tlcnTmp + 16] = Tmp2;
      lcnCopyPageptr.p->word32[tlcnTmp + 32] = Tmp3;
      lcnCopyPageptr.p->word32[tlcnTmp + 48] = Tmp4;

      Tchs = Tchs ^ Tmp1;
      Tchs = Tchs ^ Tmp2;
      Tchs = Tchs ^ Tmp3;
      Tchs = Tchs ^ Tmp4;
    }//for
  }//for
  tlcnChecksum = Tchs;
  if (((lcnCopyPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) != ZLONG_PAGE_TYPE) {
    jam();
    if (((lcnCopyPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == ZNORMAL_PAGE_TYPE) {
      jam();
      /*-----------------------------------------------------------------*/
      /*       TAKE CARE OF ALL 64 BUFFERS ADDRESSED BY ALGORITHM IN     */
      /*       FIRST PAGE. IF THEY ARE EMPTY THEY STILL HAVE A CONTAINER */
      /*       HEADER OF 2 WORDS.                                        */
      /*-----------------------------------------------------------------*/
      tlcnConIndex = ZHEAD_SIZE;
      tlupForward = 1;
      for (tlcnIndex = 0; tlcnIndex <= ZNO_CONTAINERS - 1; tlcnIndex++) {
        tlupIndex = tlcnConIndex;
        tlupElemIndex = tlcnConIndex + ZCON_HEAD_SIZE;
        lcpUpdatePage(signal);
        tlcnConIndex = tlcnConIndex + ZBUF_SIZE;
      }//for
    }//if
    /*-----------------------------------------------------------------*/
    /*       TAKE CARE OF ALL USED BUFFERS ON THE LEFT SIDE.           */
    /*-----------------------------------------------------------------*/
    tlcnNextContainer = (lcnCopyPageptr.p->word32[ZPOS_EMPTY_LIST] >> 23) & 0x7f;
    while (tlcnNextContainer < ZEMPTYLIST) {
      tlcnConIndex = (tlcnNextContainer << ZSHIFT_PLUS) - (tlcnNextContainer << ZSHIFT_MINUS);
      tlcnConIndex = tlcnConIndex + ZHEAD_SIZE;
      tlupIndex = tlcnConIndex;
      tlupElemIndex = tlcnConIndex + ZCON_HEAD_SIZE;
      tlupForward = 1;
      lcpUpdatePage(signal);
      tlcnNextContainer = (lcnCopyPageptr.p->word32[tlcnConIndex] >> 11) & 0x7f;
    }//while
    if (tlcnNextContainer == ZEMPTYLIST) {
      jam();
      /*empty*/;
    } else {
      jam();
      sendSystemerror(signal);
      return;
    }//if
    /*-----------------------------------------------------------------*/
    /*       TAKE CARE OF ALL USED BUFFERS ON THE RIGHT SIDE.          */
    /*-----------------------------------------------------------------*/
    tlupForward = cminusOne;
    tlcnNextContainer = (lcnCopyPageptr.p->word32[ZPOS_EMPTY_LIST] >> 16) & 0x7f;
    while (tlcnNextContainer < ZEMPTYLIST) {
      tlcnConIndex = (tlcnNextContainer << ZSHIFT_PLUS) - (tlcnNextContainer << ZSHIFT_MINUS);
      tlcnConIndex = tlcnConIndex + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      tlupIndex = tlcnConIndex;
      tlupElemIndex = tlcnConIndex - 1;
      lcpUpdatePage(signal);
      tlcnNextContainer = (lcnCopyPageptr.p->word32[tlcnConIndex] >> 11) & 0x7f;
    }//while
    if (tlcnNextContainer == ZEMPTYLIST) {
      jam();
      /*empty*/;
    } else {
      jam();
      sendSystemerror(signal);
      return;
    }//if
  }//if
  lcnCopyPageptr.p->word32[ZPOS_CHECKSUM] = tlcnChecksum;
}//Dbacc::lcpCopyPage()

/* --------------------------------------------------------------------------------- */
/*       THIS SUBROUTINE GOES THROUGH ONE CONTAINER TO CHECK FOR LOCKED ELEMENTS AND */
/*       UPDATING THEM TO ENSURE ALL ELEMENTS ARE UNLOCKED ON DISK.                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::lcpUpdatePage(Signal* signal) 
{
  OperationrecPtr lupOperationRecPtr;
  Uint32 tlupElemHead;
  Uint32 tlupElemLen;
  Uint32 tlupElemStep;
  Uint32 tlupConLen;

  tlupConLen = lupPageptr.p->word32[tlupIndex] >> 26;
  tlupElemLen = fragrecptr.p->elementLength;
  tlupElemStep = tlupForward * tlupElemLen;
  while (tlupConLen > ZCON_HEAD_SIZE) {
    jam();
    tlupElemHead = lupPageptr.p->word32[tlupElemIndex];
    if (ElementHeader::getLocked(tlupElemHead)) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       WHEN CHANGING THE ELEMENT HEADER WE ALSO HAVE TO UPDATE THE CHECKSUM. IN    */
      /*       DOING THIS WE USE THE FORMULA (A XOR B) XOR B = A WHICH MEANS THAT IF WE    */
      /*       XOR SOMETHING TWICE WITH THE SAME OPERAND THEN WE RETURN TO THE ORIGINAL    */
      /*       VALUE. THEN WE ALSO HAVE TO USE THE NEW ELEMENT HEADER IN THE CHECKSUM      */
      /*       CALCULATION.                                                                */
      /* --------------------------------------------------------------------------------- */
      tlcnChecksum = tlcnChecksum ^ tlupElemHead;
      lupOperationRecPtr.i = ElementHeader::getOpPtrI(tlupElemHead);
      ptrCheckGuard(lupOperationRecPtr, coprecsize, operationrec);
      const Uint32 hv = lupOperationRecPtr.p->hashvaluePart;
      tlupElemHead = ElementHeader::setUnlocked(hv , 0);
      arrGuard(tlupElemIndex, 2048);
      lupPageptr.p->word32[tlupElemIndex] = tlupElemHead;
      tlcnChecksum = tlcnChecksum ^ tlupElemHead;
    }//if
    tlupConLen = tlupConLen - tlupElemLen;
    tlupElemIndex = tlupElemIndex + tlupElemStep;
  }//while
  if (tlupConLen < ZCON_HEAD_SIZE) {
    jam();
    sendSystemerror(signal);
  }//if
}//Dbacc::lcpUpdatePage()

/*-----------------------------------------------------------------*/
// At a system restart we check that the page do not contain any
// locks that hinder the system restart procedure.
/*-----------------------------------------------------------------*/
void Dbacc::srCheckPage(Signal* signal) 
{
  Uint32 tlcnNextContainer;
  Uint32 tlcnConIndex;
  Uint32 tlcnIndex;

  lupPageptr.p = lcnCopyPageptr.p;
  if (((lcnCopyPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) != ZLONG_PAGE_TYPE) {
    jam();
    if (((lcnCopyPageptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == ZNORMAL_PAGE_TYPE) {
      jam();
      /*-----------------------------------------------------------------*/
      /*       TAKE CARE OF ALL 64 BUFFERS ADDRESSED BY ALGORITHM IN     */
      /*       FIRST PAGE. IF THEY ARE EMPTY THEY STILL HAVE A CONTAINER */
      /*       HEADER OF 2 WORDS.                                        */
      /*-----------------------------------------------------------------*/
      tlcnConIndex = ZHEAD_SIZE;
      tlupForward = 1;
      for (tlcnIndex = 0; tlcnIndex <= ZNO_CONTAINERS - 1; tlcnIndex++) {
        tlupIndex = tlcnConIndex;
        tlupElemIndex = tlcnConIndex + ZCON_HEAD_SIZE;
        srCheckContainer(signal);
        if (tresult != 0) {
          jam();
          return;
        }//if
        tlcnConIndex = tlcnConIndex + ZBUF_SIZE;
      }//for
    }//if
    /*-----------------------------------------------------------------*/
    /*       TAKE CARE OF ALL USED BUFFERS ON THE LEFT SIDE.           */
    /*-----------------------------------------------------------------*/
    tlcnNextContainer = (lcnCopyPageptr.p->word32[ZPOS_EMPTY_LIST] >> 23) & 0x7f;
    while (tlcnNextContainer < ZEMPTYLIST) {
      tlcnConIndex = (tlcnNextContainer << ZSHIFT_PLUS) - (tlcnNextContainer << ZSHIFT_MINUS);
      tlcnConIndex = tlcnConIndex + ZHEAD_SIZE;
      tlupIndex = tlcnConIndex;
      tlupElemIndex = tlcnConIndex + ZCON_HEAD_SIZE;
      tlupForward = 1;
      srCheckContainer(signal);
      if (tresult != 0) {
        jam();
        return;
      }//if
      tlcnNextContainer = (lcnCopyPageptr.p->word32[tlcnConIndex] >> 11) & 0x7f;
    }//while
    if (tlcnNextContainer == ZEMPTYLIST) {
      jam();
      /*empty*/;
    } else {
      jam();
      tresult = 4;
      return;
    }//if
    /*-----------------------------------------------------------------*/
    /*       TAKE CARE OF ALL USED BUFFERS ON THE RIGHT SIDE.          */
    /*-----------------------------------------------------------------*/
    tlupForward = cminusOne;
    tlcnNextContainer = (lcnCopyPageptr.p->word32[ZPOS_EMPTY_LIST] >> 16) & 0x7f;
    while (tlcnNextContainer < ZEMPTYLIST) {
      tlcnConIndex = (tlcnNextContainer << ZSHIFT_PLUS) - (tlcnNextContainer << ZSHIFT_MINUS);
      tlcnConIndex = tlcnConIndex + ((ZHEAD_SIZE + ZBUF_SIZE) - ZCON_HEAD_SIZE);
      tlupIndex = tlcnConIndex;
      tlupElemIndex = tlcnConIndex - 1;
      srCheckContainer(signal);
      if (tresult != 0) {
        jam();
        return;
      }//if
      tlcnNextContainer = (lcnCopyPageptr.p->word32[tlcnConIndex] >> 11) & 0x7f;
    }//while
    if (tlcnNextContainer == ZEMPTYLIST) {
      jam();
      /*empty*/;
    } else {
      jam();
      tresult = 4;
      return;
    }//if
  }//if
}//Dbacc::srCheckPage()

/* --------------------------------------------------------------------------------- */
/*       THIS SUBROUTINE GOES THROUGH ONE CONTAINER TO CHECK FOR LOCKED ELEMENTS AND */
/*       UPDATING THEM TO ENSURE ALL ELEMENTS ARE UNLOCKED ON DISK.                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::srCheckContainer(Signal* signal) 
{
  Uint32 tlupElemLen;
  Uint32 tlupElemStep;
  Uint32 tlupConLen;

  tlupConLen = lupPageptr.p->word32[tlupIndex] >> 26;
  tlupElemLen = fragrecptr.p->elementLength;
  tlupElemStep = tlupForward * tlupElemLen;
  while (tlupConLen > ZCON_HEAD_SIZE) {
    jam();
    const Uint32 tlupElemHead = lupPageptr.p->word32[tlupElemIndex];
    if (ElementHeader::getLocked(tlupElemHead)){
      jam();
      //-------------------------------------------------------
      // This is absolutely undesirable. We have a lock remaining
      // after the system restart. We send a crash signal that will
      // enter the trace file.
      //-------------------------------------------------------
      tresult = 2;
      return;
    }//if
    tlupConLen = tlupConLen - tlupElemLen;
    tlupElemIndex = tlupElemIndex + tlupElemStep;
  }//while
  if (tlupConLen < ZCON_HEAD_SIZE) {
    jam();
    tresult = 3;
  }//if
  return;
}//Dbacc::srCheckContainer()

/* ------------------------------------------------------------------------- */
/*  CHECK_UNDO_PAGES                                                         */
/*  DESCRIPTION: CHECKS WHEN A PAGE OR A GROUP OF UNDO PAGES IS FILLED.WHEN  */
/*               A PAGE IS FILLED, CUNDOPOSITION WILL BE UPDATE, THE NEW     */
/*               POSITION  IS THE BEGNING OF THE NEXT UNDO PAGE.             */
/*               IN CASE THAT A GROUP IS FILLED THE PAGES ARE SENT TO DISK,  */
/*               AND A NEW GROUP IS CHOSEN.                                  */
/* ------------------------------------------------------------------------- */
void Dbacc::checkUndoPages(Signal* signal) 
{

  fragrecptr.p->prevUndoposition = cundoposition;
  cprevUndoaddress = cundoposition;

  // Calculate active undo page id
  Uint32 tundoPageId = cundoposition >> ZUNDOPAGEINDEXBITS;

  /**
   * WE WILL WRITE UNTIL WE HAVE ABOUT 8 KBYTE REMAINING ON THE 32 KBYTE 
   * PAGE. THIS IS TO ENSURE THAT WE DO NOT HAVE ANY UNDO LOG RECORDS THAT PASS
   * A PAGE BOUNDARIE. THIS SIMPLIFIES CODING TRADING SOME INEFFICIENCY.   
   */
  static const Uint32 ZMAXUNDOPAGEINDEX = 7100;
  if (tundoindex < ZMAXUNDOPAGEINDEX) {
    jam();
    cundoposition = (tundoPageId << ZUNDOPAGEINDEXBITS) + tundoindex;
    return;
  }//if

  /**
   * WE CHECK IF MORE THAN 1 MBYTE OF WRITES ARE OUTSTANDING TO THE UNDO FILE.
   * IF SO WE HAVE TO CRASH SINCE WE HAVE NO MORE SPACE TO WRITE UNDO LOG
   * RECORDS IN
   */
  Uint16 nextUndoPageId = tundoPageId + 1;
  if (nextUndoPageId > (clastUndoPageIdWritten + cundopagesize)){
    // No more undolog, crash node
    progError(__LINE__,
	      ERR_NO_MORE_UNDOLOG,
	      "There are more than 1Mbyte undolog writes outstanding");
  }
  updateUndoPositionPage(signal, nextUndoPageId << ZUNDOPAGEINDEXBITS);

  if ((tundoPageId & (ZWRITE_UNDOPAGESIZE - 1)) == (ZWRITE_UNDOPAGESIZE - 1)) {
    jam();
    /* ----------  SEND A GROUP OF UNDO PAGES TO DISK --------- */
    fsConnectptr.i = cactiveOpenUndoFsPtr;
    ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
    Uint32 tcupTmp1 = (tundoPageId - ZWRITE_UNDOPAGESIZE) + 1;
    tcupTmp1 = tcupTmp1 & (cundopagesize - 1);	/* 1 MBYTE PAGE WINDOW */
    seizeFsOpRec(signal);
    initFsOpRec(signal);
    fsOpptr.p->fsOpstate = WAIT_WRITE_UNDO_EXIT;
    fsOpptr.p->fsOpMemPage = tundoPageId;
    fragrecptr.p->nrWaitWriteUndoExit++;
    if (clblPageCounter >= 8) {
      jam();
      clblPageCounter = clblPageCounter - 8;
    } else {
      jam();
      clblPageOver = clblPageOver + (8 - clblPageCounter);
      clblPageCounter = 0;
    }//if
    /* ************************ */
    /* FSWRITEREQ               */
    /* ************************ */
    signal->theData[0] = fsConnectptr.p->fsPtr;
    signal->theData[1] = cownBlockref;
    signal->theData[2] = fsOpptr.i;
    signal->theData[3] = 0x1;
    /* FLAG = START MEM PAGES, START FILE PAGES */
    signal->theData[4] = ZUNDOPAGE_BASE_ADD;
    signal->theData[5] = ZWRITE_UNDOPAGESIZE;
    signal->theData[6] = tcupTmp1;
    signal->theData[7] = cactiveUndoFilePage;
    sendSignal(NDBFS_REF, GSN_FSWRITEREQ, signal, 8, JBA);
    cactiveUndoFilePage = cactiveUndoFilePage + ZWRITE_UNDOPAGESIZE;
  }//if
}//Dbacc::checkUndoPages()

/* --------------------------------------------------------------------------------- */
/* UNDO_WRITING_PROCESS                                                              */
/*             INPUT: FRAGRECPTR, CUNDO_ELEM_INDEX, DATAPAGEPTR, CUNDOINFOLENGTH     */
/*                DESCRIPTION: WHEN THE PROCESS OF CREATION LOCAL CHECK POINT HAS    */
/*                  STARTED. IF THE ACTIVE PAGE IS NOT ALREADY SENT TO DISK, THE     */
/*                  OLD VALUE OF THE ITEM WHICH IS GOING TO BE CHECKED IS STORED ON  */
/*                  THE ACTIVE UNDO PAGE. INFORMATION ABOUT UNDO PROCESS IN THE      */
/*                  BLOCK AND IN THE FRAGMENT WILL BE UPDATED.                       */
/* --------------------------------------------------------------------------------- */
void Dbacc::undoWritingProcess(Signal* signal) 
{
  const Uint32 tactivePageDir = datapageptr.p->word32[ZPOS_PAGE_ID];
  const Uint32 tpageType = (datapageptr.p->word32[ZPOS_EMPTY_LIST] >> ZPOS_PAGE_TYPE_BIT) & 3;
  if (fragrecptr.p->fragState == LCP_SEND_PAGES) {
    if (tpageType == ZNORMAL_PAGE_TYPE) {
      /* --------------------------------------------------------------------------- */
      /* HANDLING OF LOG OF NORMAL PAGES DURING WRITE OF NORMAL PAGES.               */
      /* --------------------------------------------------------------------------- */
      if (tactivePageDir < fragrecptr.p->lcpDirIndex) {
        jam();
	/* ------------------------------------------------------------------- */
	/* THIS PAGE HAS ALREADY BEEN WRITTEN IN THE LOCAL CHECKPOINT.         */
	/* ------------------------------------------------------------------- */
        /*empty*/;
      } else {
        if (tactivePageDir >= fragrecptr.p->lcpMaxDirIndex) {
          jam();
	  /* --------------------------------------------------------------------------- */
	  /* OBVIOUSLY THE FRAGMENT HAS EXPANDED SINCE THE START OF THE LOCAL CHECKPOINT.*/
	  /* WE NEED NOT LOG ANY UPDATES OF PAGES THAT DID NOT EXIST AT START OF LCP.    */
	  /* --------------------------------------------------------------------------- */
	  /*empty*/;
        } else {
          jam();
	  /* --------------------------------------------------------------------------- */
	  /* IN ALL OTHER CASES WE HAVE TO WRITE TO THE UNDO LOG.                        */
	  /* --------------------------------------------------------------------------- */
          undopageptr.i = (cundoposition >> ZUNDOPAGEINDEXBITS) & (cundopagesize - 1);
          ptrAss(undopageptr, undopage);
          theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
          tundoindex = theadundoindex + ZUNDOHEADSIZE;
          writeUndoHeader(signal, tactivePageDir, UndoHeader::ZPAGE_INFO);
          tundoElemIndex = cundoElemIndex;
          writeUndoDataInfo(signal);
          checkUndoPages(signal);
        }//if
      }//if
    } else if (tpageType == ZOVERFLOW_PAGE_TYPE) {
      /* --------------------------------------------------------------------------------- */
      /*       OVERFLOW PAGE HANDLING DURING WRITE OF NORMAL PAGES.                        */
      /* --------------------------------------------------------------------------------- */
      if (tactivePageDir >= fragrecptr.p->lcpMaxOverDirIndex) {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       OBVIOUSLY THE FRAGMENT HAS EXPANDED THE NUMBER OF OVERFLOW PAGES SINCE THE  */
	/*       START OF THE LOCAL CHECKPOINT. WE NEED NOT LOG ANY UPDATES OF PAGES THAT DID*/
	/*       NOT EXIST AT START OF LCP.                                                  */
	/* --------------------------------------------------------------------------------- */
        /*empty*/;
      } else {
        jam();
        undopageptr.i = (cundoposition >> ZUNDOPAGEINDEXBITS) & (cundopagesize - 1);
        ptrAss(undopageptr, undopage);
        theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
	tundoindex = theadundoindex + ZUNDOHEADSIZE;
	writeUndoHeader(signal, tactivePageDir, UndoHeader::ZOVER_PAGE_INFO);
	tundoElemIndex = cundoElemIndex;
        writeUndoDataInfo(signal);
        checkUndoPages(signal);
      }//if
    } else if (tpageType != ZLONG_PAGE_TYPE) {
      jam();
      /* --------------------------------------------------------------------------- */
      /* ONLY PAGE INFO AND OVERFLOW PAGE INFO CAN BE LOGGED BY THIS ROUTINE. A      */
      /* SERIOUS ERROR.                                                              */
      /* --------------------------------------------------------------------------- */
      sendSystemerror(signal);
    } else {
      /* --------------------------------------------------------------------------------- */
      /*       THIS LOG RECORD IS GENERATED ON A LONG KEY PAGE. THESE PAGES USE LOGICAL    */
      /*       LOGGING.                                                                    */
      /* --------------------------------------------------------------------------------- */
      if (tactivePageDir >= fragrecptr.p->lcpMaxOverDirIndex) {
        jam();  
	/* --------------------------------------------------------------------------------- */
	/*       OBVIOUSLY THE FRAGMENT HAS EXPANDED THE NUMBER OF OVERFLOW PAGES SINCE THE  */
	/*       START OF THE LOCAL CHECKPOINT. WE NEED NOT LOG ANY UPDATES OF PAGES THAT DID*/
	/*       NOT EXIST AT START OF LCP.                                                  */
	/* --------------------------------------------------------------------------------- */
        /*empty*/;
      } else {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       LOGICAL LOGGING OF LONG KEY PAGES CAN EITHER BE UNDO OF AN INSERT OR UNDO   */
	/*       OF A DELETE KEY. UNDO OF DELETE NEEDS TO LOG THE KEY TO BE REINSERTED WHILE */
	/*       UNDO OF INSERT ONLY NEEDS TO LOG THE INDEX TO BE DELETED.                   */
	/* --------------------------------------------------------------------------------- */
        undopageptr.i = (cundoposition >> ZUNDOPAGEINDEXBITS) & (cundopagesize - 1);
        ptrAss(undopageptr, undopage);
        theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
	tundoindex = theadundoindex + ZUNDOHEADSIZE;
	if (cundoinfolength == 0) {
          jam();
          writeUndoHeader(signal, tactivePageDir, UndoHeader::ZUNDO_INSERT_LONG_KEY);
        } else {
          jam();
          writeUndoHeader(signal, tactivePageDir, UndoHeader::ZUNDO_DELETE_LONG_KEY);
	  arrGuard(ZWORDS_IN_PAGE - cundoElemIndex, 2048);
          tundoElemIndex = datapageptr.p->word32[ZWORDS_IN_PAGE - cundoElemIndex] & 0xffff;
          writeUndoDataInfo(signal);
        }//if
        checkUndoPages(signal);
      }//if
    }//if
  } else {
    if (fragrecptr.p->fragState == LCP_SEND_OVER_PAGES) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       DURING WRITE OF OVERFLOW PAGES WE NEED NOT WORRY ANYMORE ABOUT NORMAL PAGES.*/
      /* --------------------------------------------------------------------------------- */
      if (tpageType == ZOVERFLOW_PAGE_TYPE) {
        if (tactivePageDir < fragrecptr.p->lcpDirIndex) {
          jam();
	  /* --------------------------------------------------------------------------------- */
	  /*       THIS PAGE HAS ALREADY BEEN WRITTEN IN THE LOCAL CHECKPOINT.                 */
	  /* --------------------------------------------------------------------------------- */
	  /*empty*/;
        } else {
          if (tactivePageDir >= fragrecptr.p->lcpMaxOverDirIndex) {
            jam();	
	    /* --------------------------------------------------------------------------------- */
	    /*       OBVIOUSLY THE FRAGMENT HAS EXPANDED THE NUMBER OF OVERFLOW PAGES SINCE THE  */
	    /*       START OF THE LOCAL CHECKPOINT. WE NEED NOT LOG ANY UPDATES OF PAGES THAT DID*/
	    /*       NOT EXIST AT START OF LCP.                                                  */
	    /* --------------------------------------------------------------------------------- */
            /*empty*/;
          } else {
            jam();
            undopageptr.i = (cundoposition >> ZUNDOPAGEINDEXBITS) & (cundopagesize - 1);
            ptrAss(undopageptr, undopage);
            theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
	    tundoindex = theadundoindex + ZUNDOHEADSIZE;
	    writeUndoHeader(signal, tactivePageDir, UndoHeader::ZOVER_PAGE_INFO);
	    tundoElemIndex = cundoElemIndex;
            writeUndoDataInfo(signal);
            checkUndoPages(signal);
          }//if
        }//if
      } else if (tpageType == ZLONG_PAGE_TYPE) {
        if (tactivePageDir < fragrecptr.p->lcpDirIndex) {
          jam();
	  // -------------------------------------------------------------
	  // THIS PAGE HAS ALREADY BEEN WRITTEN IN THE LOCAL CHECKPOINT.   
	  // -------------------------------------------------------------
        } else {
          if (tactivePageDir >= fragrecptr.p->lcpMaxOverDirIndex) {
            jam();
	    // -------------------------------------------------------------
	    // OBVIOUSLY THE FRAGMENT HAS EXPANDED THE NUMBER OF OVERFLOW 
	    // PAGES SINCE THE START OF THE LOCAL CHECKPOINT. WE NEED NOT 
	    // LOG ANY UPDATES OF PAGES THAT DID NOT EXIST AT START OF LCP.	    
	    // -------------------------------------------------------------
	  } else {
            jam();
	    // -------------------------------------------------------------
	    // LOGICAL LOGGING OF LONG KEY PAGES CAN EITHER BE UNDO OF AN 
	    // INSERT OR UNDO OF A DELETE KEY. UNDO OF DELETE NEEDS TO LOG 
	    // THE KEY TO BE REINSERTED WHILE UNDO OF INSERT ONLY NEEDS TO 
	    // LOG THE INDEX TO BE DELETED.                   
	    // -------------------------------------------------------------
            undopageptr.i = (cundoposition >> ZUNDOPAGEINDEXBITS) & (cundopagesize - 1);
            ptrAss(undopageptr, undopage);
            theadundoindex = cundoposition & ZUNDOPAGEINDEX_MASK;
	    tundoindex = theadundoindex + ZUNDOHEADSIZE;
	    if (cundoinfolength == 0) {
              jam();
              writeUndoHeader(signal, tactivePageDir, UndoHeader::ZUNDO_INSERT_LONG_KEY);
            } else {
              jam();
              writeUndoHeader(signal, tactivePageDir, UndoHeader::ZUNDO_DELETE_LONG_KEY);
	      arrGuard(ZWORDS_IN_PAGE - cundoElemIndex, 2048);
              tundoElemIndex = datapageptr.p->word32[ZWORDS_IN_PAGE - cundoElemIndex] & 0xffff;
              writeUndoDataInfo(signal);
            }//if
            checkUndoPages(signal);
          }//if
        }//if
      }//if
    }//if
  }//if
}//Dbacc::undoWritingProcess()

/* --------------------------------------------------------------------------------- */
/*       OTHER STATES MEANS THAT WE HAVE ALREADY WRITTEN ALL PAGES BUT NOT YET RESET */
/*       THE CREATE_LCP FLAG.                                                        */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* WRITE_UNDO_DATA_INFO                                                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::writeUndoDataInfo(Signal* signal) 
{
  Uint32 twudiIndex;
  Uint32 guard22;

  guard22 = cundoinfolength;
  arrGuard((tundoindex + guard22 - 1), 8192);
  arrGuard((tundoElemIndex + guard22 - 1), 2048);
  for (twudiIndex = 1; twudiIndex <= guard22; twudiIndex++) {
    undopageptr.p->undoword[tundoindex] = datapageptr.p->word32[tundoElemIndex];
    tundoindex++;
    tundoElemIndex++;
  }//for
}//Dbacc::writeUndoDataInfo()

/* --------------------------------------------------------------------------------- */
/* WRITE_UNDO_HEADER                                                                 */
/*      THE HEAD OF UNDO ELEMENT IS 24 BYTES AND CONTAINS THE FOLLOWING INFORMATION: */
/*          TABLE IDENTITY                                              32  BITS     */
/*          ROOT FRAGMENT IDENTITY                                      32  BITS     */
/*          LOCAL FRAGMENT IDENTITY                                     32  BITS     */
/*          LENGTH OF ELEMENT INF0 (BIT 31 - 18)                        14  BITS     */
/*          INFO TYPE               (BIT 17 - 14)                        4  BITS     */
/*          PAGE INDEX OF THE FIRST FIELD IN THE FRAGMENT  (BIT 13 - 0) 14  BITS     */
/*          DIRECTORY INDEX OF THE PAGE IN THE FRAGMENT                 32  BITS     */
/*          ADDRESS OF THE PREVIOUS ELEMENT OF THE FRAGMENT             64  BITS     */
/*          ADDRESS OF THE PREVIOUS ELEMENT IN THE UNDO PAGES           64  BITS     */
/* --------------------------------------------------------------------------------- */
void Dbacc::writeUndoHeader(Signal* signal, 
                            Uint32 logicalPageId,  
                            UndoHeader::UndoHeaderType pageType) 
{
  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  arrGuard(theadundoindex + 6, 8192);

  // Set the structpointer to point at the undo page at the right address.
  UndoHeader * const & undoHeaderPtr = 
    (UndoHeader *) &undopageptr.p->undoword[theadundoindex];

  undoHeaderPtr->tableId = rootfragrecptr.p->mytabptr;
  undoHeaderPtr->rootFragId = rootfragrecptr.p->fragmentid[0];
  undoHeaderPtr->localFragId = fragrecptr.p->myfid;
  Uint32 Ttmp = cundoinfolength;
  Ttmp = (Ttmp << 4) + pageType;
  Ttmp = Ttmp << 14;
  undoHeaderPtr->variousInfo = Ttmp + cundoElemIndex;
  undoHeaderPtr->logicalPageId =  logicalPageId;
  undoHeaderPtr->prevUndoAddressForThisFrag = fragrecptr.p->prevUndoposition;
  undoHeaderPtr->prevUndoAddress = cprevUndoaddress;
}//Dbacc::writeUndoHeader()

/* --------------------------------------------------------------------------------- */
/* WRITE_UNDO_OP_INFO                                                                */
/*     FOR A LOCKED ELEMENT, OPERATION TYPE, UNDO OF ELEMENT HEADER AND THE LENGTH OF*/
/*     THE TUPLE KEY HAVE TO BE SAVED IN UNDO PAGES. IN THIS CASE AN UNDO ELEMENT    */
/*     INCLUDES THE FLLOWING ITEMS.                                                  */
/*          OPERATION TYPE                                              32  BITS     */
/*          HASH VALUE                                                  32  BITS     */
/*          LENGTH OF THE TUPLE = N                                     32  BITS     */
/*          TUPLE KEYS                                             N *  32  BITS     */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::writeUndoOpInfo(Signal* signal) 
{
  Page8Ptr locPageptr;

  arrGuard((tundoindex + 3), 8192);  
  undopageptr.p->undoword[tundoindex] = operationRecPtr.p->operation;
  undopageptr.p->undoword[tundoindex + 1] = operationRecPtr.p->hashValue;
  undopageptr.p->undoword[tundoindex + 2] = operationRecPtr.p->tupkeylen;
  tundoindex = tundoindex + 3;
  if (fragrecptr.p->keyLength != 0) {
    // Fixed size keys
    jam();
    locPageptr.i = operationRecPtr.p->elementPage;
    ptrCheckGuard(locPageptr, cpagesize, page8);
    Uint32 Tforward = operationRecPtr.p->elementIsforward;
    Uint32 TelemPtr = operationRecPtr.p->elementPointer;
    TelemPtr += Tforward;
    TelemPtr += Tforward;
    //--------------------------------------------------------------------------------- 
    // Now the pointer is at the start of the key part of the element. Now copy from there
    // to the UNDO log.
    //--------------------------------------------------------------------------------- 
    Uint32 keyLen = operationRecPtr.p->tupkeylen;
    ndbrequire(keyLen <= 8);
    arrGuard(tundoindex+keyLen, 8192);
    for (Uint32 twuoiIndex = 0; twuoiIndex < keyLen; twuoiIndex++) {
      jam();
      arrGuard(TelemPtr, 2048);
      undopageptr.p->undoword[tundoindex] = locPageptr.p->word32[TelemPtr];
      tundoindex++;
      TelemPtr += Tforward;
    }//for
    cundoinfolength = ZOP_HEAD_INFO_LN + operationRecPtr.p->tupkeylen;
  } else {
    // Long keys
    jam();

    arrGuard(operationRecPtr.p->longKeyPageIndex, ZMAX_NO_OF_LONGKEYS_IN_PAGE);
    locPageptr.i = operationRecPtr.p->longPagePtr;
    ptrCheckGuard(locPageptr, cpagesize, page8);

    Uint32 indexValue = 
      locPageptr.p->word32[ZWORDS_IN_PAGE - operationRecPtr.p->longKeyPageIndex];
    Uint32 keyLen = indexValue >> 16;
    Uint32 physPageIndex = indexValue & 0xffff;
    ndbrequire(keyLen == operationRecPtr.p->tupkeylen);

    arrGuard(tundoindex+keyLen, 8192);
    arrGuard(physPageIndex+keyLen, 2048);
    for (Uint32 i = 0; i < keyLen; i++){
      undopageptr.p->undoword[tundoindex + i] = locPageptr.p->word32[physPageIndex+i];
    }
    tundoindex = tundoindex + keyLen;    
    cundoinfolength = ZOP_HEAD_INFO_LN + keyLen;  
  }//if
}//Dbacc::writeUndoOpInfo()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF LOCAL CHECKPOINT MODULE                                              */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       SYSTEM RESTART MODULE                                                       */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* SR_FRAGIDREQ                                    REQUEST FOR RESTART OF A FRAGMENT */
/*                                                 SENDER: LQH,    LEVEL B           */
/*          ENTER  SR_FRAGIDREQ WITH                                                 */
/*                    TUSERPTR,                    LQH CONNECTION PTR                */
/*                    TUSERBLOCKREF,               LQH BLOCK REFERENCE               */
/*                    TCHECKPOINTID,               THE CHECKPOINT NUMBER TO USE      */
/*                                                     (E.G. 1,2 OR 3)               */
/*                    TABPTR,                      TABLE ID = TABLE RECORD POINTER   */
/*                    TFID,                        ROOT FRAGMENT ID                  */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* SR_FRAGIDREQ                           REQUEST FOR LIST OF STOPED OPERATION  */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execSR_FRAGIDREQ(Signal* signal) 
{
  jamEntry();
  tuserptr = signal->theData[0];      /* LQH CONNECTION PTR              */
  tuserblockref = signal->theData[1]; /* LQH BLOCK REFERENCE             */
  tcheckpointid = signal->theData[2]; /* THE CHECKPOINT NUMBER TO USE    */
                                      /*   (E.G. 1,2 OR 3)               */
  tabptr.i = signal->theData[3];
  ptrCheckGuard(tabptr, ctablesize, tabrec);
  /* TABLE ID = TABLE RECORD POINTER */
  tfid = signal->theData[4];          /* ROOT FRAGMENT ID                */
  tresult = 0;	/* 0= FALSE,1= TRUE,> ZLIMIT_OF_ERROR =ERRORCODE */
  seizeLcpConnectRec(signal);
  initLcpConnRec(signal);

  ndbrequire(getrootfragmentrec(signal, rootfragrecptr, tfid));
  rootfragrecptr.p->lcpPtr = lcpConnectptr.i;
  lcpConnectptr.p->rootrecptr = rootfragrecptr.i;
  lcpConnectptr.p->localCheckPid = tcheckpointid;
  for (Uint32 i = 0; i < 2; i++) {
    Page8Ptr zeroPagePtr;
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[i];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);    
    seizeLcpPage(zeroPagePtr);
    fragrecptr.p->zeroPagePtr = zeroPagePtr.i;
  }//for

  /* ---------------------------OPEN THE DATA FILE WHICH BELONGS TO TFID AND TCHECK POINT ---- */
  fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  tfid = rootfragrecptr.p->fragmentid[0];
  tmp = 0;
  srOpenDataFileLoopLab(signal);
  
  return;
}//Dbacc::execSR_FRAGIDREQ()

void Dbacc::srOpenDataFileLoopLab(Signal* signal) 
{
  /* D6 AT FSOPENREQ. FILE TYPE = .DATA */
  tmp1 = 0x010003ff;	                          /* VERSION OF FILENAME = 1 */
  tmp2 = 0x0;	                                  /* D7 DON'T CREATE, READ ONLY */
  ndbrequire(cfsFirstfreeconnect != RNIL);
  seizeFsConnectRec(signal);

  fragrecptr.p->fsConnPtr = fsConnectptr.i;
  fsConnectptr.p->fragrecPtr = fragrecptr.i;
  fsConnectptr.p->fsState = WAIT_OPEN_DATA_FILE_FOR_READ;
  fsConnectptr.p->activeFragId = tmp;	/* LOCAL FRAG INDEX */
  /* ************************ */
  /* FSOPENREQ                */
  /* ************************ */
  signal->theData[0] = cownBlockref;
  signal->theData[1] = fsConnectptr.i;
  signal->theData[2] = rootfragrecptr.p->mytabptr;     /* TABLE IDENTITY */
  signal->theData[3] = tfid;                           /* FRAGMENT IDENTITY */
  signal->theData[4] = lcpConnectptr.p->localCheckPid; /* CHECKPOINT ID */
  signal->theData[5] = tmp1;
  signal->theData[6] = tmp2;
  sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, 7, JBA);
  return;
}//Dbacc::srOpenDataFileLoopLab()

void Dbacc::srFsOpenConfLab(Signal* signal) 
{
  fsConnectptr.p->fsState = WAIT_READ_PAGE_ZERO;
  /* ------------------------  READ ZERO PAGE ---------- */
  fragrecptr.i = fsConnectptr.p->fragrecPtr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = 0x0;
  /* FLAG = LIST MEM PAGES, LIST FILE PAGES */
  signal->theData[4] = ZPAGE8_BASE_ADD;
  signal->theData[5] = 1;                 /* NO OF PAGES */
  signal->theData[6] = fragrecptr.p->zeroPagePtr; /* ZERO PAGE */
  signal->theData[7] = 0;                 /* PAGE ZERO OF THE DATA FILE */
  sendSignal(NDBFS_REF, GSN_FSREADREQ, signal, 8, JBA);
  return;
}//Dbacc::srFsOpenConfLab()

void Dbacc::srReadPageZeroLab(Signal* signal) 
{
  Page8Ptr srzPageptr;

  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  fragrecptr.p->activeDataFilePage = 1;
  srzPageptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(srzPageptr, cpagesize, page8);
  /* --------------------------------------------------------------------------------- */
  // Check that the checksum of the zero page is ok.
  /* --------------------------------------------------------------------------------- */
  ccoPageptr.p = srzPageptr.p;
  checksumControl(signal, (Uint32)0);
  if (tresult > 0) {
    jam();
    return; // We will crash through a DEBUG_SIG
  }//if

  ndbrequire(srzPageptr.p->word32[ZPAGEZERO_FRAGID0] == rootfragrecptr.p->fragmentid[0]);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  if (fsConnectptr.p->activeFragId == 0) {
    jam();
    rootfragrecptr.p->fragmentid[1] = srzPageptr.p->word32[ZPAGEZERO_FRAGID1];
    /* ---------------------------OPEN THE DATA FILE FOR NEXT LOCAL FRAGMENT ----------- ---- */
    tfid = rootfragrecptr.p->fragmentid[1];
    tmp = 1;	/* LOCAL FRAG INDEX */
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    srOpenDataFileLoopLab(signal);
    return;
  } else {
    jam();
    lcpConnectptr.p->lcpstate = LCP_ACTIVE;
    signal->theData[0] = lcpConnectptr.p->lcpUserptr;
    signal->theData[1] = lcpConnectptr.i;
    signal->theData[2] = 2;                         /* NO OF LOCAL FRAGMENTS */
    signal->theData[3] = srzPageptr.p->word32[ZPAGEZERO_FRAGID0];
    /* ROOTFRAGRECPTR:FRAGMENTID(0) */
    signal->theData[4] = srzPageptr.p->word32[ZPAGEZERO_FRAGID1];
    /* ROOTFRAGRECPTR:FRAGMENTID(1) */
    signal->theData[5] = RNIL;
    signal->theData[6] = RNIL;
    signal->theData[7] = rootfragrecptr.p->fragmentptr[0];
    signal->theData[8] = rootfragrecptr.p->fragmentptr[1];
    signal->theData[9] = srzPageptr.p->word32[ZPAGEZERO_HASH_CHECK];
    sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_SR_FRAGIDCONF, signal, 10, JBB);
  }//if
  return;
}//Dbacc::srReadPageZeroLab()

void Dbacc::initFragAdd(Signal* signal,
                        Uint32 rootFragIndex,
                        Uint32 rootIndex,
                        FragmentrecPtr regFragPtr) 
{
  const AccFragReq * const req = (AccFragReq*)&signal->theData[0];  
  Uint32 lhFragBits = req->lhFragBits + 1;
  Uint32 minLoadFactor = (req->minLoadFactor * ZBUF_SIZE) / 100;
  Uint32 maxLoadFactor = (req->maxLoadFactor * ZBUF_SIZE) / 100;
  if (minLoadFactor >= maxLoadFactor) {
    jam();
    minLoadFactor = maxLoadFactor - 1;
  }//if
  regFragPtr.p->fragState = ACTIVEFRAG;
  // NOTE: next line must match calculation in Dblqh::execLQHFRAGREQ
  regFragPtr.p->myfid = (rootFragIndex << (lhFragBits - 1)) | req->fragId;
  regFragPtr.p->myroot = rootIndex;
  regFragPtr.p->myTableId = req->tableId;
  ndbrequire(req->kValue == 6);
  regFragPtr.p->k = req->kValue;	/* TK_SIZE = 6 IN THIS VERSION */
  regFragPtr.p->expandCounter = 0;
  regFragPtr.p->expandFlag = 0;
  regFragPtr.p->p = 0;
  regFragPtr.p->maxp = (1 << req->kValue) - 1;
  regFragPtr.p->minloadfactor = minLoadFactor;
  regFragPtr.p->maxloadfactor = maxLoadFactor;
  regFragPtr.p->slack = (regFragPtr.p->maxp + 1) * maxLoadFactor;
  regFragPtr.p->lhfragbits = lhFragBits;
  regFragPtr.p->lhdirbits = 0;
  regFragPtr.p->hashcheckbit = 0; //lhFragBits;
  regFragPtr.p->localkeylen = req->localKeyLen;
  regFragPtr.p->nodetype = (req->reqInfo >> 4) & 0x3;
  regFragPtr.p->lastOverIndex = 0;
  regFragPtr.p->dirsize = 1;
  regFragPtr.p->loadingFlag = ZFALSE;
  regFragPtr.p->keyLength = req->keyLength;
  if (req->keyLength == 0) {
    jam();
    regFragPtr.p->elementLength = (1 + ZELEM_HEAD_SIZE) + regFragPtr.p->localkeylen;
  } else {
    jam();
    regFragPtr.p->elementLength = (ZELEM_HEAD_SIZE + regFragPtr.p->localkeylen) + regFragPtr.p->keyLength;
  }//if
  Uint32 Tmp1 = (regFragPtr.p->maxp + 1) + regFragPtr.p->p;
  Uint32 Tmp2 = regFragPtr.p->maxloadfactor - regFragPtr.p->minloadfactor;
  Tmp2 = Tmp1 * Tmp2;
  regFragPtr.p->slackCheck = Tmp2;
}//Dbacc::initFragAdd()

void Dbacc::initFragGeneral(FragmentrecPtr regFragPtr)
{
  regFragPtr.p->directory = RNIL;
  regFragPtr.p->overflowdir = RNIL;
  regFragPtr.p->fsConnPtr = RNIL;
  regFragPtr.p->firstOverflowRec = RNIL;
  regFragPtr.p->lastOverflowRec = RNIL;
  regFragPtr.p->firstWaitInQueOp = RNIL;
  regFragPtr.p->lastWaitInQueOp = RNIL;
  regFragPtr.p->sentWaitInQueOp = RNIL;
  regFragPtr.p->lockOwnersList = RNIL;
  regFragPtr.p->firstFreeDirindexRec = RNIL;
  regFragPtr.p->zeroPagePtr = RNIL;

  regFragPtr.p->activeDataPage = 0;
  regFragPtr.p->createLcp = ZFALSE;
  regFragPtr.p->stopQueOp = ZFALSE;
  regFragPtr.p->nextAllocPage = 0;
  regFragPtr.p->nrWaitWriteUndoExit = 0;
  regFragPtr.p->lastUndoIsStored = ZFALSE;
  regFragPtr.p->loadingFlag = ZFALSE;
  regFragPtr.p->fragState = FREEFRAG;
  for (Uint32 i = 0; i < ZWRITEPAGESIZE; i++) {
    regFragPtr.p->datapages[i] = RNIL;
  }//for
  for (Uint32 i = 0; i < 4; i++) {
    regFragPtr.p->longKeyPageArray[i] = RNIL;
  }//for
}//Dbacc::initFragGeneral()

void Dbacc::initFragSr(FragmentrecPtr regFragPtr, Page8Ptr regPagePtr) 
{
  regFragPtr.p->prevUndoposition =    regPagePtr.p->word32[ZPAGEZERO_PREV_UNDOP];
  regFragPtr.p->noOfStoredOverPages = regPagePtr.p->word32[ZPAGEZERO_NO_OVER_PAGE];
  regFragPtr.p->noStoredPages =       regPagePtr.p->word32[ZPAGEZERO_NO_PAGES];
  regFragPtr.p->dirsize =             regPagePtr.p->word32[ZPAGEZERO_DIRSIZE];
  regFragPtr.p->expandCounter =       regPagePtr.p->word32[ZPAGEZERO_EXPCOUNTER];
  regFragPtr.p->slack =               regPagePtr.p->word32[ZPAGEZERO_SLACK];
  regFragPtr.p->hashcheckbit =        regPagePtr.p->word32[ZPAGEZERO_HASHCHECKBIT];
  regFragPtr.p->k =                   regPagePtr.p->word32[ZPAGEZERO_K];
  regFragPtr.p->lhfragbits =          regPagePtr.p->word32[ZPAGEZERO_LHFRAGBITS];
  regFragPtr.p->lhdirbits =           regPagePtr.p->word32[ZPAGEZERO_LHDIRBITS];
  regFragPtr.p->localkeylen =         regPagePtr.p->word32[ZPAGEZERO_LOCALKEYLEN];
  regFragPtr.p->maxp =                regPagePtr.p->word32[ZPAGEZERO_MAXP];
  regFragPtr.p->maxloadfactor =       regPagePtr.p->word32[ZPAGEZERO_MAXLOADFACTOR];
  regFragPtr.p->minloadfactor =       regPagePtr.p->word32[ZPAGEZERO_MINLOADFACTOR];
  regFragPtr.p->myfid =               regPagePtr.p->word32[ZPAGEZERO_MYFID];
  regFragPtr.p->lastOverIndex =       regPagePtr.p->word32[ZPAGEZERO_LAST_OVER_INDEX];
  regFragPtr.p->nodetype =            regPagePtr.p->word32[ZPAGEZERO_NODETYPE];
  regFragPtr.p->p =                   regPagePtr.p->word32[ZPAGEZERO_P];
  regFragPtr.p->elementLength =       regPagePtr.p->word32[ZPAGEZERO_ELEMENT_LENGTH];
  regFragPtr.p->keyLength =           regPagePtr.p->word32[ZPAGEZERO_KEY_LENGTH];
  regFragPtr.p->slackCheck =          regPagePtr.p->word32[ZPAGEZERO_SLACK_CHECK];

  regFragPtr.p->loadingFlag = ZTRUE;

}//Dbacc::initFragSr()

void Dbacc::initFragPageZero(FragmentrecPtr regFragPtr, Page8Ptr regPagePtr) 
{
  //------------------------------------------------------------------
  // PREV_UNDOP, NEXT_UNDO_FILE, NO_OVER_PAGE, NO_PAGES
  // is set at end of copy phase
  //------------------------------------------------------------------
  regPagePtr.p->word32[ZPAGEZERO_DIRSIZE] = regFragPtr.p->dirsize;
  regPagePtr.p->word32[ZPAGEZERO_EXPCOUNTER] = regFragPtr.p->expandCounter;
  regPagePtr.p->word32[ZPAGEZERO_SLACK] = regFragPtr.p->slack;
  regPagePtr.p->word32[ZPAGEZERO_HASHCHECKBIT] = regFragPtr.p->hashcheckbit;
  regPagePtr.p->word32[ZPAGEZERO_K] = regFragPtr.p->k;
  regPagePtr.p->word32[ZPAGEZERO_LHFRAGBITS] = regFragPtr.p->lhfragbits;
  regPagePtr.p->word32[ZPAGEZERO_LHDIRBITS] = regFragPtr.p->lhdirbits;
  regPagePtr.p->word32[ZPAGEZERO_LOCALKEYLEN] = regFragPtr.p->localkeylen;
  regPagePtr.p->word32[ZPAGEZERO_MAXP] = regFragPtr.p->maxp;
  regPagePtr.p->word32[ZPAGEZERO_MAXLOADFACTOR] = regFragPtr.p->maxloadfactor;
  regPagePtr.p->word32[ZPAGEZERO_MINLOADFACTOR] = regFragPtr.p->minloadfactor;
  regPagePtr.p->word32[ZPAGEZERO_MYFID] = regFragPtr.p->myfid;
  regPagePtr.p->word32[ZPAGEZERO_LAST_OVER_INDEX] = regFragPtr.p->lastOverIndex;
  regPagePtr.p->word32[ZPAGEZERO_NODETYPE] = regFragPtr.p->nodetype;
  regPagePtr.p->word32[ZPAGEZERO_P] = regFragPtr.p->p;
  regPagePtr.p->word32[ZPAGEZERO_ELEMENT_LENGTH] = regFragPtr.p->elementLength;
  regPagePtr.p->word32[ZPAGEZERO_KEY_LENGTH] = regFragPtr.p->keyLength;
  regPagePtr.p->word32[ZPAGEZERO_SLACK_CHECK] = regFragPtr.p->slackCheck;
}//Dbacc::initFragPageZero()

void Dbacc::initRootFragPageZero(RootfragmentrecPtr rootPtr, Page8Ptr regPagePtr) 
{
  regPagePtr.p->word32[ZPAGEZERO_TABID] = rootPtr.p->mytabptr;
  regPagePtr.p->word32[ZPAGEZERO_FRAGID0] = rootPtr.p->fragmentid[0];
  regPagePtr.p->word32[ZPAGEZERO_FRAGID1] = rootPtr.p->fragmentid[1];
  regPagePtr.p->word32[ZPAGEZERO_HASH_CHECK] = rootPtr.p->roothashcheck;
  regPagePtr.p->word32[ZPAGEZERO_NO_OF_ELEMENTS] = rootPtr.p->noOfElements;
}//Dbacc::initRootFragPageZero()

void Dbacc::initRootFragSr(RootfragmentrecPtr rootPtr, Page8Ptr regPagePtr)
{
  rootPtr.p->roothashcheck = regPagePtr.p->word32[ZPAGEZERO_HASH_CHECK];
  rootPtr.p->noOfElements = regPagePtr.p->word32[ZPAGEZERO_NO_OF_ELEMENTS];
}//Dbacc::initRootFragSr()

/* ******************--------------------------------------------------------------- */
/* ACC_SRREQ                               SYSTEM RESTART OF A LOCAL CHECK POINT     */
/*                                                   SENDER: LQH,    LEVEL B         */
/*          ENTER ACC_SRREQ WITH                                                     */
/*                    LCP_CONNECTPTR,                OPERATION RECORD PTR            */
/*                    TMP2,                          LQH'S  LOCAL FRAG CHECK VALUE   */
/*                    TFID,                          LOCAL FRAG ID                   */
/*                    TMP1,                          LOCAL CHECKPOINT ID             */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_SRREQ                                       PERFORM A LOCAL CHECK POINT      */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACC_SRREQ(Signal* signal) 
{
  Page8Ptr asrPageidptr;
  jamEntry();
  lcpConnectptr.i = signal->theData[0];
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  Uint32 lqhPtr = signal->theData[1];
  Uint32 fragId = signal->theData[2];
  Uint32 lcpId = signal->theData[3];
  tresult = 0;
  ndbrequire(lcpConnectptr.p->lcpstate == LCP_ACTIVE);
  rootfragrecptr.i = lcpConnectptr.p->rootrecptr;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  if (rootfragrecptr.p->fragmentid[0] == fragId) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
  } else {
    ndbrequire(rootfragrecptr.p->fragmentid[1] == fragId);
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
  }//if
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  fragrecptr.p->lcpLqhPtr = lqhPtr;
  fragrecptr.p->localCheckpId = lcpId;
  asrPageidptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(asrPageidptr, cpagesize, page8);
  ndbrequire(asrPageidptr.p->word32[ZPAGEZERO_TABID] == rootfragrecptr.p->mytabptr);
  ndbrequire(asrPageidptr.p->word32[ZPAGEZERO_FRAGID0] == rootfragrecptr.p->fragmentid[0]);
  ndbrequire(asrPageidptr.p->word32[ZPAGEZERO_FRAGID1] == rootfragrecptr.p->fragmentid[1]);
  initRootFragSr(rootfragrecptr, asrPageidptr);
  initFragSr(fragrecptr, asrPageidptr);
  for (Uint32 i = 0; i < ZMAX_UNDO_VERSION; i++) {
    jam();
    if (csrVersList[i] != RNIL) {
      jam();
      srVersionPtr.i = csrVersList[i];
      ptrCheckGuard(srVersionPtr, csrVersionRecSize, srVersionRec);
      if (fragrecptr.p->localCheckpId == srVersionPtr.p->checkPointId) {
        jam();
        ndbrequire(srVersionPtr.p->checkPointId == asrPageidptr.p->word32[ZPAGEZERO_NEXT_UNDO_FILE]);
	/*--------------------------------------------------------------------------------*/
	/*       SINCE -1 IS THE END OF LOG CODE WE MUST TREAT THIS CODE WITH CARE. WHEN  */
	/*       COMPARING IT IS LARGER THAN EVERYTHING ELSE BUT SHOULD BE TREATED AS THE */
	/*       SMALLEST POSSIBLE VALUE, MEANING EMPTY.                                  */
	/*--------------------------------------------------------------------------------*/
        if (fragrecptr.p->prevUndoposition != cminusOne) {
          if (srVersionPtr.p->prevAddress < fragrecptr.p->prevUndoposition) {
            jam();
            srVersionPtr.p->prevAddress = fragrecptr.p->prevUndoposition;
          } else if (srVersionPtr.p->prevAddress == cminusOne) {
            jam();
            srVersionPtr.p->prevAddress = fragrecptr.p->prevUndoposition;
          }//if
        }//if
        srAllocPage0011Lab(signal);
        return;
      }//if
    } else {
      jam();
      seizeSrVerRec(signal);
      srVersionPtr.p->checkPointId = fragrecptr.p->localCheckpId;
      srVersionPtr.p->prevAddress = fragrecptr.p->prevUndoposition;
      csrVersList[i] = srVersionPtr.i;
      srAllocPage0011Lab(signal);
      return;
    }//if
  }//for
  ndbrequire(false);
}//Dbacc::execACC_SRREQ()

void
Dbacc::releaseLogicalPage(Fragmentrec * fragP, Uint32 logicalPageId){
  Ptr<struct DirRange> dirRangePtr;
  dirRangePtr.i = fragP->directory;
  ptrCheckGuard(dirRangePtr, cdirrangesize, dirRange);

  const Uint32 lp1 = logicalPageId >> 8;
  const Uint32 lp2 = logicalPageId & 0xFF;
  ndbrequire(lp1 < 256);

  Ptr<struct Directoryarray> dirArrPtr;
  dirArrPtr.i = dirRangePtr.p->dirArray[lp1];
  ptrCheckGuard(dirArrPtr, cdirarraysize, directoryarray);

  const Uint32 physicalPageId = dirArrPtr.p->pagep[lp2];
  
  rpPageptr.i = physicalPageId;
  ptrCheckGuard(rpPageptr, cpagesize, page8);
  releasePage(0);

  dirArrPtr.p->pagep[lp2] = RNIL;
}

void Dbacc::srAllocPage0011Lab(Signal* signal) 
{
  releaseLogicalPage(fragrecptr.p, 0);

#if JONAS
  ndbrequire(cfirstfreeDirrange != RNIL);
  seizeDirrange(signal);
  fragrecptr.p->directory = newDirRangePtr.i;
  ndbrequire(cfirstfreeDirrange != RNIL);
  seizeDirrange(signal);
  fragrecptr.p->overflowdir = newDirRangePtr.i;
  seizeDirectory(signal);
  ndbrequire(tresult < ZLIMIT_OF_ERROR);
  newDirRangePtr.p->dirArray[0] = sdDirptr.i;
#endif

  fragrecptr.p->nextAllocPage = 0;
  fragrecptr.p->fragState = SR_READ_PAGES;
  srReadPagesLab(signal);
  return;
}//Dbacc::srAllocPage0011Lab()

void Dbacc::srReadPagesLab(Signal* signal) 
{
  if (fragrecptr.p->nextAllocPage >= fragrecptr.p->noStoredPages) {
    /*--------------------------------------------------------------------------------*/
    /*       WE HAVE NOW READ ALL NORMAL PAGES FROM THE FILE.                         */
    /*--------------------------------------------------------------------------------*/
    if (fragrecptr.p->nextAllocPage == fragrecptr.p->dirsize) {
      jam();
      /*--------------------------------------------------------------------------------*/
      /*       WE HAVE NOW READ ALL NORMAL PAGES AND ALLOCATED ALL THE NEEDED PAGES.    */
      /*--------------------------------------------------------------------------------*/
      fragrecptr.p->nextAllocPage = 0;	/* THE NEXT OVER FLOW PAGE WHICH WILL BE READ */
      fragrecptr.p->fragState = SR_READ_OVER_PAGES;
      srReadOverPagesLab(signal);
    } else {
      ndbrequire(fragrecptr.p->nextAllocPage < fragrecptr.p->dirsize);
      jam();
      /*--------------------------------------------------------------------------------*/
      /*       WE NEEDED TO ALLOCATE PAGES THAT WERE DEALLOCATED DURING THE LOCAL       */
      /*       CHECKPOINT.                                                              */
      /*       ALLOCATE THE PAGE AND INITIALISE IT. THEN WE INSERT A REAL-TIME BREAK.   */
      /*--------------------------------------------------------------------------------*/
      seizePage(signal);
      ndbrequire(tresult <= ZLIMIT_OF_ERROR);
      tipPageId = fragrecptr.p->nextAllocPage;
      inpPageptr.i = spPageptr.i;
      ptrCheckGuard(inpPageptr, cpagesize, page8);
      initPage(signal);
      fragrecptr.p->noOfExpectedPages = 1;
      fragrecptr.p->datapages[0] = spPageptr.i;
      signal->theData[0] = ZSR_READ_PAGES_ALLOC;
      signal->theData[1] = fragrecptr.i;
      sendSignal(cownBlockref, GSN_CONTINUEB, signal, 2, JBB);
    }//if
    return;
  }//if
  Uint32 limitLoop;
  if ((fragrecptr.p->noStoredPages - fragrecptr.p->nextAllocPage) < ZWRITEPAGESIZE) {
    jam();
    limitLoop = fragrecptr.p->noStoredPages - fragrecptr.p->nextAllocPage;
  } else {
    jam();
    limitLoop = ZWRITEPAGESIZE;
  }//if
  ndbrequire(limitLoop <= 8);
  for (Uint32 i = 0; i < limitLoop; i++) {
    jam();
    seizePage(signal);
    ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    fragrecptr.p->datapages[i] = spPageptr.i;
    signal->theData[i + 6] = spPageptr.i;
  }//for
  signal->theData[limitLoop + 6] = fragrecptr.p->activeDataFilePage;
  fragrecptr.p->noOfExpectedPages = limitLoop;
  /* -----------------SEND READ PAGES SIGNAL TO THE FILE MANAGER --------- */
  fsConnectptr.i = fragrecptr.p->fsConnPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  fsConnectptr.p->fsState = WAIT_READ_DATA;
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = 2;
  /* FLAG = LIST MEM PAGES, RANGE OF FILE PAGES */
  signal->theData[4] = ZPAGE8_BASE_ADD;
  signal->theData[5] = fragrecptr.p->noOfExpectedPages;
  sendSignal(NDBFS_REF, GSN_FSREADREQ, signal, 15, JBA);
  return;
}//Dbacc::srReadPagesLab()

void Dbacc::storeDataPageInDirectoryLab(Signal* signal) 
{
  fragrecptr.p->activeDataFilePage += fragrecptr.p->noOfExpectedPages;
  srReadPagesAllocLab(signal);
  return;
}//Dbacc::storeDataPageInDirectoryLab()

void Dbacc::srReadPagesAllocLab(Signal* signal) 
{
  DirRangePtr srpDirRangePtr;
  DirectoryarrayPtr srpDirptr;
  DirectoryarrayPtr srpOverflowDirptr;
  Page8Ptr srpPageidptr;

  if (fragrecptr.p->fragState == SR_READ_PAGES) {
    jam();
    for (Uint32 i = 0; i < fragrecptr.p->noOfExpectedPages; i++) {
      jam();
      tmpP = fragrecptr.p->nextAllocPage;
      srpDirRangePtr.i = fragrecptr.p->directory;
      tmpP2 = tmpP >> 8;
      tmp = tmpP & 0xff;
      ptrCheckGuard(srpDirRangePtr, cdirrangesize, dirRange);
      arrGuard(tmpP2, 256);
      if (srpDirRangePtr.p->dirArray[tmpP2] == RNIL) {
        seizeDirectory(signal);
        ndbrequire(tresult <= ZLIMIT_OF_ERROR);
        srpDirptr.i = sdDirptr.i;
        srpDirRangePtr.p->dirArray[tmpP2] = srpDirptr.i;
      } else {
        jam();
        srpDirptr.i = srpDirRangePtr.p->dirArray[tmpP2];
      }//if
      ptrCheckGuard(srpDirptr, cdirarraysize, directoryarray);
      arrGuard(i, 8);
      srpDirptr.p->pagep[tmp] = fragrecptr.p->datapages[i];
      srpPageidptr.i = fragrecptr.p->datapages[i];
      ptrCheckGuard(srpPageidptr, cpagesize, page8);
      ndbrequire(srpPageidptr.p->word32[ZPOS_PAGE_ID] == fragrecptr.p->nextAllocPage);
      ndbrequire(((srpPageidptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) == 0);
      ccoPageptr.p = srpPageidptr.p;
      checksumControl(signal, (Uint32)1);
      if (tresult > 0) {
        jam();
        return; // We will crash through a DEBUG_SIG
      }//if
      dbgWord32(srpPageidptr, ZPOS_OVERFLOWREC, RNIL);
      srpPageidptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
      fragrecptr.p->datapages[i] = RNIL;
      fragrecptr.p->nextAllocPage++;
    }//for
    srReadPagesLab(signal);
    return;
  } else {
    ndbrequire(fragrecptr.p->fragState == SR_READ_OVER_PAGES);
    for (Uint32 i = 0; i < fragrecptr.p->noOfExpectedPages; i++) {
      jam();
      arrGuard(i, 8);
      srpPageidptr.i = fragrecptr.p->datapages[i];
      ptrCheckGuard(srpPageidptr, cpagesize, page8);
      tmpP = srpPageidptr.p->word32[ZPOS_PAGE_ID];	/* DIR INDEX OF THE OVERFLOW PAGE */
      /*--------------------------------------------------------------------------------*/
      /*       IT IS POSSIBLE THAT WE HAVE LOGICAL PAGES WHICH ARE NOT PART OF THE LOCAL*/
      /*       CHECKPOINT. THUS WE USE THE LOGICAL PAGE ID FROM THE PAGE HERE.          */
      /*--------------------------------------------------------------------------------*/
      srpDirRangePtr.i = fragrecptr.p->overflowdir;
      tmpP2 = tmpP >> 8;
      tmpP = tmpP & 0xff;
      ptrCheckGuard(srpDirRangePtr, cdirrangesize, dirRange);
      arrGuard(tmpP2, 256);
      if (srpDirRangePtr.p->dirArray[tmpP2] == RNIL) {
        jam();
        seizeDirectory(signal);
        ndbrequire(tresult <= ZLIMIT_OF_ERROR);
        srpDirRangePtr.p->dirArray[tmpP2] = sdDirptr.i;
      }//if
      srpOverflowDirptr.i = srpDirRangePtr.p->dirArray[tmpP2];
      ndbrequire(((srpPageidptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) != 0);
      ndbrequire(((srpPageidptr.p->word32[ZPOS_PAGE_TYPE] >> ZPOS_PAGE_TYPE_BIT) & 3) != 3);
      ptrCheckGuard(srpOverflowDirptr, cdirarraysize, directoryarray);
      ndbrequire(srpOverflowDirptr.p->pagep[tmpP] == RNIL);
      srpOverflowDirptr.p->pagep[tmpP] = srpPageidptr.i;
      ccoPageptr.p = srpPageidptr.p;
      checksumControl(signal, (Uint32)1);
      ndbrequire(tresult == 0);
      dbgWord32(srpPageidptr, ZPOS_OVERFLOWREC, RNIL);
      srpPageidptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
      fragrecptr.p->nextAllocPage++;
    }//for
    srReadOverPagesLab(signal);
    return;
  }//if
}//Dbacc::srReadPagesAllocLab()

void Dbacc::srReadOverPagesLab(Signal* signal) 
{
  if (fragrecptr.p->nextAllocPage >= fragrecptr.p->noOfStoredOverPages) {
    fragrecptr.p->nextAllocPage = 0;
    if (fragrecptr.p->prevUndoposition == cminusOne) {
      jam();
      /* ************************ */
      /*   ACC_OVER_REC           */
      /* ************************ */
      /*--------------------------------------------------------------------------------*/
      /*       UPDATE FREE LIST OF OVERFLOW PAGES AS PART OF SYSTEM RESTART AFTER       */
      /*       READING PAGES AND EXECUTING THE UNDO LOG.                                */
      /*--------------------------------------------------------------------------------*/
      signal->theData[0] = fragrecptr.i;
      sendSignal(cownBlockref, GSN_ACC_OVER_REC, signal, 1, JBB);
    } else {
      jam();
      srCloseDataFileLab(signal);
    }//if
    return;
  }//if
  Uint32 limitLoop;
  if ((fragrecptr.p->noOfStoredOverPages - fragrecptr.p->nextAllocPage) < ZWRITEPAGESIZE) {
    jam();
    limitLoop = fragrecptr.p->noOfStoredOverPages - fragrecptr.p->nextAllocPage;
  } else {
    jam();
    limitLoop = ZWRITEPAGESIZE;
  }//if
  ndbrequire(limitLoop <= 8);
  for (Uint32 i = 0; i < limitLoop; i++) {
    jam();
    seizePage(signal);
    ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    fragrecptr.p->datapages[i] = spPageptr.i;
    signal->theData[i + 6] = spPageptr.i;
  }//for
  fragrecptr.p->noOfExpectedPages = limitLoop;
  signal->theData[limitLoop + 6] = fragrecptr.p->activeDataFilePage;
  /* -----------------SEND READ PAGES SIGNAL TO THE FILE MANAGER --------- */
  fsConnectptr.i = fragrecptr.p->fsConnPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  fsConnectptr.p->fsState = WAIT_READ_DATA;
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = 2;
  signal->theData[4] = ZPAGE8_BASE_ADD;
  signal->theData[5] = fragrecptr.p->noOfExpectedPages;
  sendSignal(NDBFS_REF, GSN_FSREADREQ, signal, 15, JBA);
  return;
}//Dbacc::srReadOverPagesLab()

void Dbacc::srCloseDataFileLab(Signal* signal) 
{
  fsConnectptr.i = fragrecptr.p->fsConnPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  fsConnectptr.p->fsState = SR_CLOSE_DATA;
  /* ************************ */
  /* FSCLOSEREQ               */
  /* ************************ */
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = 0;
  sendSignal(NDBFS_REF, GSN_FSCLOSEREQ, signal, 4, JBA);
  return;
}//Dbacc::srCloseDataFileLab()

/* ************************ */
/* ACC_SRCONF               */
/* ************************ */
void Dbacc::sendaccSrconfLab(Signal* signal) 
{
  fragrecptr.i = fsConnectptr.p->fragrecPtr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  releaseFsConnRec(signal);
  rootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  lcpConnectptr.i = rootfragrecptr.p->lcpPtr;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  fragrecptr.p->fragState = ACTIVEFRAG;
  fragrecptr.p->fsConnPtr = RNIL;
  for (Uint32 i = 0; i < ZWRITEPAGESIZE; i++) {
    fragrecptr.p->datapages[i] = RNIL;
  }//for
  rlpPageptr.i = fragrecptr.p->zeroPagePtr;
  ptrCheckGuard(rlpPageptr, cpagesize, page8);
  releaseLcpPage(signal);
  fragrecptr.p->zeroPagePtr = RNIL;
  signal->theData[0] = fragrecptr.p->lcpLqhPtr;
  sendSignal(lcpConnectptr.p->lcpUserblockref, GSN_ACC_SRCONF, signal, 1, JBB);
  lcpConnectptr.p->noOfLcpConf++;
  if (lcpConnectptr.p->noOfLcpConf == 2) {
    jam();
    releaseLcpConnectRec(signal);
    rootfragrecptr.p->lcpPtr = RNIL;
    rootfragrecptr.p->rootState = ACTIVEROOT;
  }//if
  return;
}//Dbacc::sendaccSrconfLab()

/* --------------------------------------------------------------------------------- */
/*       CHECKSUM_CONTROL                                                            */
/*               INPUT:          CCO_PAGEPTR                                         */
/*               OUTPUT:         TRESULT                                             */
/*                                                                                   */
/*       CHECK THAT CHECKSUM IN PAGE IS CORRECT TO ENSURE THAT NO ONE HAS CORRUPTED  */
/*       THE PAGE INFORMATION. WHEN CALCULATING THE CHECKSUM WE REMOVE THE CHECKSUM  */
/*       ITSELF FROM THE CHECKSUM BY XOR'ING THE CHECKSUM TWICE. WHEN CALCULATING    */
/*       THE CHECKSUM THE CHECKSUM WORD IS ZERO WHICH MEANS NO CHANGE FROM XOR'ING.  */
/* --------------------------------------------------------------------------------- */
void Dbacc::checksumControl(Signal* signal, Uint32 checkPage) 
{
  Uint32 Tchs;
  Uint32 tccoIndex;
  Uint32 Ti;
  Uint32 Tmp1;
  Uint32 Tmp2;
  Uint32 Tmp3;
  Uint32 Tmp4;
  Uint32 Tlimit;

  Tchs = 0;
  for (Ti = 0; Ti < 32 ; Ti++) {
    Tlimit = 16 + (Ti << 6);
    for (tccoIndex = (Ti << 6); tccoIndex < Tlimit; tccoIndex ++) {
      Tmp1 = ccoPageptr.p->word32[tccoIndex];
      Tmp2 = ccoPageptr.p->word32[tccoIndex + 16];
      Tmp3 = ccoPageptr.p->word32[tccoIndex + 32];
      Tmp4 = ccoPageptr.p->word32[tccoIndex + 48];

      Tchs = Tchs ^ Tmp1;
      Tchs = Tchs ^ Tmp2;
      Tchs = Tchs ^ Tmp3;
      Tchs = Tchs ^ Tmp4;
    }//for
  }//for
  if (Tchs == 0) {
    tresult = 0;
    if (checkPage != 0) {
      jam();
      lcnCopyPageptr.p = ccoPageptr.p;
      srCheckPage(signal);
    }//if
  } else {
    tresult = 1;
  }//if
  if (tresult != 0) {
    jam();
    rootfragrecptr.i = fragrecptr.p->myroot;
    ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
    signal->theData[0] = RNIL;
    signal->theData[1] = rootfragrecptr.p->mytabptr;
    signal->theData[2] = fragrecptr.p->myfid;
    signal->theData[3] = ccoPageptr.p->word32[ZPOS_PAGE_ID];
    signal->theData[4] = tlupElemIndex;
    signal->theData[5] = ccoPageptr.p->word32[ZPOS_PAGE_TYPE];
    signal->theData[6] = tresult;
    sendSignal(cownBlockref, GSN_DEBUG_SIG, signal, 7, JBA);
  }//if
}//Dbacc::checksumControl()

/* ******************--------------------------------------------------------------- */
/* START_RECREQ                                  REQUEST TO START UNDO PROCESS       */
/*                                                     SENDER: LQH,    LEVEL B       */
/*          ENTER START_RECREQ WITH                                                  */
/*                    CLQH_PTR,                      LQH CONNECTION PTR              */
/*                    CLQH_BLOCK_REF,                LQH BLOCK REFERENCE             */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* START_RECREQ                                       REQUEST TO START UNDO PROCESS  */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execSTART_RECREQ(Signal* signal) 
{
  jamEntry();
  clqhPtr = signal->theData[0];        /* LQH CONNECTION PTR              */
  clqhBlockRef = signal->theData[1];   /* LQH BLOCK REFERENCE             */
  tresult = 0;	/* 0= FALSE,1= TRUE,> ZLIMIT_OF_ERROR =ERRORCODE */
  for (int i = 0; i < UndoHeader::ZNO_UNDORECORD_TYPES; i++)
    cSrUndoRecords[i] = 0;
  startUndoLab(signal);
  return;
}//Dbacc::execSTART_RECREQ()

void Dbacc::startUndoLab(Signal* signal) 
{
  cundoLogActive = ZTRUE;
  /* ----- OPEN UNDO FILES --------- */
  for (tmp = 0; tmp <= ZMAX_UNDO_VERSION - 1; tmp++) {
    jam();
    if (csrVersList[tmp] != RNIL) {
      jam();
      /*---------------------------------------------------------------------------*/
      /*       SELECT THE NEXT SYSTEM RESTART RECORD WHICH CONTAINS AN UNDO LOG    */
      /*       THAT NEEDS TO BE EXECUTED AND SET UP THE DATA TO EXECUTE IT.        */
      /*---------------------------------------------------------------------------*/
      srVersionPtr.i = csrVersList[tmp];
      csrVersList[tmp] = RNIL;
      ptrCheckGuard(srVersionPtr, csrVersionRecSize, srVersionRec);
      cactiveUndoFilePage = srVersionPtr.p->prevAddress >> 13;
      cprevUndoaddress = srVersionPtr.p->prevAddress;
      cactiveCheckpId = srVersionPtr.p->checkPointId;

      releaseSrRec(signal);
      startActiveUndo(signal);
      return;
    }//if
  }//for

  // Send report of how many undo log records where executed
  signal->theData[0] = EventReport::UNDORecordsExecuted;
  signal->theData[1] = DBACC; // From block
  signal->theData[2] = 0; // Total records executed
  for (int i = 0; i < 10; i++){
    if (i < UndoHeader::ZNO_UNDORECORD_TYPES){
      signal->theData[i+3] = cSrUndoRecords[i];
      signal->theData[2] += cSrUndoRecords[i]; 
    }else{
      signal->theData[i+3] = 0;
    }
  }
  sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 12, JBB);

  /* ******************************< */
  /* START_RECCONF                   */
  /* ******************************< */
  /*---------------------------------------------------------------------------*/
  /*       REPORT COMPLETION OF UNDO LOG EXECUTION.                            */
  /*---------------------------------------------------------------------------*/
  cundoLogActive = ZFALSE;
  signal->theData[0] = clqhPtr;
  sendSignal(clqhBlockRef, GSN_START_RECCONF, signal, 1, JBB);
  /* LQH CONNECTION PTR   */
  return;
}//Dbacc::startUndoLab()

/*---------------------------------------------------------------------------*/
/*       START THE UNDO OF AN UNDO LOG FILE BY OPENING THE UNDO LOG FILE.    */
/*---------------------------------------------------------------------------*/
void Dbacc::startActiveUndo(Signal* signal) 
{
  if (cprevUndoaddress == cminusOne) {
    jam();
    /*---------------------------------------------------------------------------*/
    /*       THERE WAS NO UNDO LOG INFORMATION IN THIS LOG FILE. WE GET THE NEXT */
    /*       OR REPORT COMPLETION.                                               */
    /*---------------------------------------------------------------------------*/
    signal->theData[0] = ZSTART_UNDO;
    sendSignal(cownBlockref, GSN_CONTINUEB, signal, 1, JBB);
  } else {
    jam();
    /*---------------------------------------------------------------------------*/
    /*       OPEN THE LOG FILE PERTAINING TO THIS UNDO LOG.                      */
    /*---------------------------------------------------------------------------*/
    if (cfsFirstfreeconnect == RNIL) {
      jam();
      sendSystemerror(signal);
    }//if
    seizeFsConnectRec(signal);
    cactiveSrFsPtr = fsConnectptr.i;
    fsConnectptr.p->fsState = OPEN_UNDO_FILE_SR;
    fsConnectptr.p->fsPart = 0;
    tmp1 = 1;	                                   /* FILE VERSION ? */
    tmp1 = (tmp1 << 8) + ZLOCALLOGFILE;	           /* .LOCLOG = 2 */
    tmp1 = (tmp1 << 8) + 4;	                   /* ROOT DIRECTORY = D4 */
    tmp1 = (tmp1 << 8) + fsConnectptr.p->fsPart;   /*        P2  */
    tmp2 = 0x0;	                                   /* D7 DON'T CREATE , READ ONLY */
                                                   /* DON'T TRUNCATE TO ZERO */
    /* ---FILE NAME "D4"/"DBACC"/LCP_CONNECTPTR:LOCAL_CHECK_PID/FS_CONNECTPTR:FS_PART".LOCLOG-- */
    /* ************************ */
    /* FSOPENREQ                */
    /* ************************ */
    signal->theData[0] = cownBlockref;
    signal->theData[1] = fsConnectptr.i;
    signal->theData[2] = cminusOne;         /* #FFFFFFFF */
    signal->theData[3] = cminusOne;         /* #FFFFFFFF */
    signal->theData[4] = cactiveCheckpId;   /* CHECKPOINT VERSION */
    signal->theData[5] = tmp1;
    signal->theData[6] = tmp2;
    sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, 7, JBA);
  }//if
}//Dbacc::startActiveUndo()

/* ------- READ A GROUP OF UNDO PAGES --------------- */
void Dbacc::srStartUndoLab(Signal* signal) 
{
  /*---------------------------------------------------------------------------*/
  /*       ALL LOG FILES HAVE BEEN OPENED. WE CAN NOW READ DATA FROM THE LAST  */
  /*       PAGE IN THE LAST LOG FILE AND BACKWARDS UNTIL WE REACH THE VERY     */
  /*       FIRST UNDO LOG RECORD.                                              */
  /*---------------------------------------------------------------------------*/
  if (cactiveUndoFilePage >= ZWRITE_UNDOPAGESIZE) {
    jam();
    tmp1 = ZWRITE_UNDOPAGESIZE;	/* NO OF READ UNDO PAGES */
    cactiveSrUndoPage = ZWRITE_UNDOPAGESIZE - 1;	/* LAST PAGE */
  } else {
    jam();
    tmp1 = cactiveUndoFilePage + 1;	/* NO OF READ UNDO PAGES */
    cactiveSrUndoPage = cactiveUndoFilePage;
  }//if
  fsConnectptr.i = cactiveSrFsPtr;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  signal->theData[0] = fsConnectptr.p->fsPtr;
  signal->theData[1] = cownBlockref;
  signal->theData[2] = fsConnectptr.i;
  signal->theData[3] = 0;
  /* FLAG = LIST MEM PAGES, LIST FILE PAGES */
  signal->theData[4] = ZUNDOPAGE_BASE_ADD;
  signal->theData[5] = tmp1;
  signal->theData[6] = 0;
  signal->theData[7] = (cactiveUndoFilePage - tmp1) + 1;
  signal->theData[8] = 1;
  signal->theData[9] = cactiveUndoFilePage;

  sendSignal(NDBFS_REF, GSN_FSREADREQ, signal, 10, JBA);
  if (tmp1 > cactiveUndoFilePage) {
    jam();
    /*---------------------------------------------------------------------------*/
    /*       THIS IS THE LAST READ IN THIS LOG FILE. WE SET THE ACTIVE FILE      */
    /*       POINTER. IF IT IS THE FIRST WE SHOULD NEVER ATTEMPT ANY MORE READS  */
    /*       SINCE WE SHOULD ENCOUNTER A FIRST LOG RECORD WITH PREVIOUS PAGE ID  */
    /*       EQUAL TO RNIL.                                                      */
    /*---------------------------------------------------------------------------*/
    cactiveSrFsPtr = RNIL;
    fsConnectptr.p->fsState = READ_UNDO_PAGE_AND_CLOSE;
  } else {
    jam();
    /*---------------------------------------------------------------------------*/
    /*       WE STILL HAVE MORE INFORMATION IN THIS LOG FILE. WE ONLY MOVE BACK  */
    /*       THE FILE PAGE.                                                      */
    /*---------------------------------------------------------------------------*/
    cactiveUndoFilePage = cactiveUndoFilePage - tmp1;
    fsConnectptr.p->fsState = READ_UNDO_PAGE;
  }//if
  return;
}//Dbacc::srStartUndoLab()

/* ------- DO UNDO ---------------------------*/
/* ******************--------------------------------------------------------------- */
/* NEXTOPERATION                                       ORD FOR EXECUTION OF NEXT OP  */
/* ******************------------------------------+                                 */
/*   SENDER: ACC,    LEVEL B       */
void Dbacc::execNEXTOPERATION(Signal* signal) 
{
  jamEntry();
  tresult = 0;
  srDoUndoLab(signal);
  return;
}//Dbacc::execNEXTOPERATION()

void Dbacc::srDoUndoLab(Signal* signal) 
{
  DirRangePtr souDirRangePtr;
  DirectoryarrayPtr souDirptr;
  Page8Ptr souPageidptr;
  Uint32 tundoPageindex;
  UndoHeader *undoHeaderPtr;
  Uint32 tmpindex;

  jam();
  undopageptr.i = cactiveSrUndoPage;
  ptrCheckGuard(undopageptr, cundopagesize, undopage);
  /*---------------------------------------------------------------------------*/
  /*       LAYOUT OF AN UNDO LOG RECORD:                                       */
  /*       *****************************                                       */
  /*                                                                           */
  /*       |----------------------------------------------------|              */
  /*       |  TABLE ID                                          |              */
  /*       |----------------------------------------------------|              */
  /*       |  ROOT FRAGMENT  ID                                 |              */
  /*       |----------------------------------------------------|              */
  /*       |  LOCAL FRAGMENT  ID                                |              */
  /*       |----------------------------------------------------|              */
  /*       |  UNDO INFO LEN 14 b | TYPE 4 b | PAGE INDEX 14 b   |              */
  /*       |----------------------------------------------------|              */
  /*       |  INDEX INTO PAGE DIRECTORY (LOGICAL PAGE ID)       |              */
  /*       |----------------------------------------------------|              */
  /*       |  PREVIOUS UNDO LOG RECORD FOR THE FRAGMENT         |              */
  /*       |----------------------------------------------------|              */
  /*       |  PREVIOUS UNDO LOG RECORD FOR ALL FRAGMENTS        |              */
  /*       |----------------------------------------------------|              */
  /*       |  TYPE SPECIFIC PART                                |              */
  /*       |----------------------------------------------------|              */
  /*---------------------------------------------------------------------------*/
  /*---------------------------------------------------------------------------*/
  /*       SET THE PAGE POINTER. WE ONLY WORK WITH TWO PAGES IN THIS RESTART   */
  /*       ACTIVITY. GET THE PAGE POINTER AND THE PAGE INDEX TO READ FROM.     */
  /*---------------------------------------------------------------------------*/
  tundoindex = cprevUndoaddress & ZUNDOPAGEINDEX_MASK; //0x1fff, 13 bits.
  undoHeaderPtr = (UndoHeader *) &undopageptr.p->undoword[tundoindex];
  tundoindex = tundoindex + ZUNDOHEADSIZE;
  
  /*------------------------------------------------------------------------*/
  /*    READ TABLE ID AND ROOT FRAGMENT ID AND USE THIS TO GET ROOT RECORD. */
  /*------------------------------------------------------------------------*/
  arrGuard((tundoindex + 6), 8192);

  // TABLE ID
  tabptr.i = undoHeaderPtr->tableId;
  ptrCheckGuard(tabptr, ctablesize, tabrec);

  // ROOT FRAGMENT ID
  tfid = undoHeaderPtr->rootFragId;
  if (!getrootfragmentrec(signal, rootfragrecptr, tfid)) {
    jam();
    /*---------------------------------------------------------------------*/
    /* THE ROOT RECORD WAS NOT FOUND. OBVIOUSLY WE ARE NOT RESTARTING THIS */
    /* FRAGMENT. WE THUS IGNORE THIS LOG RECORD AND PROCEED WITH THE NEXT. */
    /*---------------------------------------------------------------------*/
    creadyUndoaddress = cprevUndoaddress;
    // PREVIOUS UNDO LOG RECORD FOR ALL FRAGMENTS
    cprevUndoaddress = undoHeaderPtr->prevUndoAddress;
    undoNext2Lab(signal);    
    return;
  }//if
  /*-----------------------------------------------------------------------*/
  /*   READ THE LOCAL FRAGMENT ID AND VERIFY THAT IT IS CORRECT.           */
  /*-----------------------------------------------------------------------*/
  if (rootfragrecptr.p->fragmentid[0] == undoHeaderPtr->localFragId) {
    jam();
    fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  } else {
    if (rootfragrecptr.p->fragmentid[1] == undoHeaderPtr->localFragId) {
      jam();
      fragrecptr.i = rootfragrecptr.p->fragmentptr[1];
      ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    } else {
      jam();
      progError(__LINE__, 0, "Invalid local fragment id in undo log");
      return;
    }//if
  }//if
  /*------------------------------------------------------------------------*/
  /*    READ UNDO INFO LENGTH, TYPE OF LOG RECORD AND PAGE INDEX WHERE TO   */
  /*    APPLY THIS LOG RECORD. ALSO STEP INDEX TO PREPARE READ OF LOGICAL   */
  /*    PAGE ID. SET TMPINDEX TO INDEX THE FIRST WORD IN THE TYPE SPECIFIC  */
  /*    PART.                                                               */
  /*------------------------------------------------------------------------*/
  // UNDO INFO LENGTH 14 b | TYPE 4 b | PAGE INDEX 14 b
  const Uint32 tmp1 = undoHeaderPtr->variousInfo;
  cundoinfolength = tmp1 >> 18;
  const Uint32 tpageType = (tmp1 >> 14) & 0xf;
  tundoPageindex = tmp1 & 0x3fff;
  
  // INDEX INTO PAGE DIRECTORY (LOGICAL PAGE ID)
  tmpP = undoHeaderPtr->logicalPageId ;
  tmpindex = tundoindex;
  arrGuard((tmpindex + cundoinfolength - 1), 8192);
  if (fragrecptr.p->localCheckpId != cactiveCheckpId) {
    jam();
    /*-----------------------------------------------------------------------*/
    /*  THE FRAGMENT DID EXIST BUT IS NOT AFFECTED BY THIS UNDO LOG          */
    /*  EXECUTION. EITHER IT BELONGS TO ANOTHER OR IT IS CREATED AND ONLY IN */
    /*  NEED OF EXECUTION OF REDO LOG RECORDS FROM LQH.                      */
    /*-----------------------------------------------------------------------*/
    creadyUndoaddress = cprevUndoaddress;
    // PREVIOUS UNDO LOG RECORD FOR ALL FRAGMENTS
    cprevUndoaddress = undoHeaderPtr->prevUndoAddress;

    undoNext2Lab(signal);
    return;
  }//if
  /*-----------------------------------------------------------------------*/
  /*   VERIFY CONSISTENCY OF UNDO LOG RECORDS.                             */
  /*-----------------------------------------------------------------------*/
  ndbrequire(fragrecptr.p->prevUndoposition == cprevUndoaddress);
  cSrUndoRecords[tpageType]++;
  switch(tpageType){

  case UndoHeader::ZPAGE_INFO:{
    jam();
    /*----------------------------------------------------------------------*/
    /*  WE HAVE TO UNDO UPDATES IN A NORMAL PAGE. GET THE PAGE POINTER BY   */
    /*  USING THE LOGICAL PAGE ID. THEN RESET THE OLD VALUE IN THE PAGE BY  */
    /*  USING THE OLD DATA WHICH IS STORED IN THIS UNDO LOG RECORD.         */
    /*----------------------------------------------------------------------*/
    souDirRangePtr.i = fragrecptr.p->directory;
    tmpP2 = tmpP >> 8;
    tmpP = tmpP & 0xff;
    ptrCheckGuard(souDirRangePtr, cdirrangesize, dirRange);
    arrGuard(tmpP2, 256);
    souDirptr.i = souDirRangePtr.p->dirArray[tmpP2];
    ptrCheckGuard(souDirptr, cdirarraysize, directoryarray);
    souPageidptr.i = souDirptr.p->pagep[tmpP];
    ptrCheckGuard(souPageidptr, cpagesize, page8);
    Uint32 loopLimit = tundoPageindex + cundoinfolength;
    ndbrequire(loopLimit <= 2048);
    for (Uint32 tmp = tundoPageindex; tmp < loopLimit; tmp++) {
      dbgWord32(souPageidptr, tmp, undopageptr.p->undoword[tmpindex]);
      souPageidptr.p->word32[tmp] = undopageptr.p->undoword[tmpindex];
      tmpindex = tmpindex + 1;
    }//for
    break;
  }
    
  case UndoHeader::ZOVER_PAGE_INFO:{
    jam();
    /*----------------------------------------------------------------------*/
    /*  WE HAVE TO UNDO UPDATES IN AN OVERFLOW PAGE. GET THE PAGE POINTER BY*/
    /*  USING THE LOGICAL PAGE ID. THEN RESET THE OLD VALUE IN THE PAGE BY  */
    /*  USING THE OLD DATA WHICH IS STORED IN THIS UNDO LOG RECORD.         */
    /*----------------------------------------------------------------------*/
    souDirRangePtr.i = fragrecptr.p->overflowdir;
    tmpP2 = tmpP >> 8;
    tmpP = tmpP & 0xff;
    ptrCheckGuard(souDirRangePtr, cdirrangesize, dirRange);
    arrGuard(tmpP2, 256);
    souDirptr.i = souDirRangePtr.p->dirArray[tmpP2];
    ptrCheckGuard(souDirptr, cdirarraysize, directoryarray);
    souPageidptr.i = souDirptr.p->pagep[tmpP];
    ptrCheckGuard(souPageidptr, cpagesize, page8);
    Uint32 loopLimit = tundoPageindex + cundoinfolength;
    ndbrequire(loopLimit <= 2048);
    for (Uint32 tmp = tundoPageindex; tmp < loopLimit; tmp++) {
      dbgWord32(souPageidptr, tmp, undopageptr.p->undoword[tmpindex]);
      souPageidptr.p->word32[tmp] = undopageptr.p->undoword[tmpindex];
      tmpindex = tmpindex + 1;
    }//for
    break;
  }

  case UndoHeader::ZUNDO_INSERT_LONG_KEY:{
    jam();
    /*---------------------------------------------------------------------*/
    /* WE WILL UNDO AN INSERT OF A LONG KEY. THIS IS PERFORMED BY DELETING */
    /* THE LONG KEY.                                                       */
    /*---------------------------------------------------------------------*/
    souDirRangePtr.i = fragrecptr.p->overflowdir;
    tmpP2 = tmpP >> 8;
    tmpP = tmpP & 0xff;
    arrGuard(tmpP2, 256);
    ptrCheckGuard(souDirRangePtr, cdirrangesize, dirRange);
    souDirptr.i = souDirRangePtr.p->dirArray[tmpP2];
    ptrCheckGuard(souDirptr, cdirarraysize, directoryarray);
    dlkPageptr.i = souDirptr.p->pagep[tmpP];
    ptrCheckGuard(dlkPageptr, cpagesize, page8);
    tdlkLogicalPageIndex = tundoPageindex;
    deleteLongKey(signal);
    break;
  }

  case UndoHeader::ZUNDO_DELETE_LONG_KEY: {
    jam();
    /*----------------------------------------------------------------------*/
    /*  WE WILL UNDO DELETE OF A LONG KEY. THIS IS PERFORMED BY INSERTING   */
    /*  IT AGAIN.                                                           */
    /*----------------------------------------------------------------------*/
    souDirRangePtr.i = fragrecptr.p->overflowdir;
    taslpDirIndex = tmpP;
    tmpP2 = tmpP >> 8;
    tmpP = tmpP & 0xff;
    ptrCheckGuard(souDirRangePtr, cdirrangesize, dirRange);
    arrGuard(tmpP2, 256);
    souDirptr.i = souDirRangePtr.p->dirArray[tmpP2];

    if(souDirptr.i == RNIL) {
      //----------------------------------------------------------------
      // Allocate a directory.
      //----------------------------------------------------------------
      jam();
      seizeDirectory(signal);
      if (tresult > ZLIMIT_OF_ERROR) {
	jam();
	sendSystemerror(signal);
	return;
      }
      souDirRangePtr.p->dirArray[tmpP2] = sdDirptr.i;
      souDirptr.i = souDirRangePtr.p->dirArray[tmpP2];
    }

    ptrCheckGuard(souDirptr, cdirarraysize, directoryarray);
    slkapPageptr.i = souDirptr.p->pagep[tmpP];
    
    if(slkapPageptr.i == RNIL) {
      //----------------------------------------------------------------
      // The delete operation was probably the last on the page and the 
      // page was released and not written down to disk. We need to 
      // allocate a page and put it in the same dirindex as it was in
      // before it was released.
      // This is because an eventual UNDO_INSERT on the same key in the
      // same LCP must be able to find the key and it has only the 
      // dirindex to go on, the key itself is not saved on disk in a
      // UNDO_INSERT.
      //----------------------------------------------------------------
      jam();
      allocSpecificLongOverflowPage(signal);
      slkapPageptr.i = aslpPageptr.i;
    }
    
    ptrCheckGuard(slkapPageptr, cpagesize, page8);
    seizePage(signal);
    ndbrequire(tresult <= ZLIMIT_OF_ERROR);
    
    slkapCopyPageptr = spPageptr;
    ndbrequire(cundoinfolength <= 2048);
    
    for (Uint32 tmp = 0; tmp < cundoinfolength; tmp++) {
      dbgWord32(slkapCopyPageptr, tmp, undopageptr.p->undoword[tmpindex]);
      slkapCopyPageptr.p->word32[tmp] = undopageptr.p->undoword[tmpindex];
      tmpindex = tmpindex + 1;
    }//for
    jam();
    //----------------------------------------------------------------
    // We must store the key at the same place it was deleted from.
    // This is because an eventual UNDO_INSERT on the same key in the
    // same LCP must be able to find the key and it has only the index
    // information stored on disk to go on, the key itself is not 
    // saved on disk in an UNDO_INSERT.
    //----------------------------------------------------------------
    tslkapKeyLen = cundoinfolength;
    tslkapPageIndex = tundoPageindex;
    storeLongKeysAtPos(signal);
    
    rpPageptr = slkapCopyPageptr;
    releasePage(signal);
    break;
  }

  case UndoHeader::ZOP_INFO: {
    jam();
    /*---------------------------------------------------------------------*/
    /* AN OPERATION WAS ACTIVE WHEN LOCAL CHECKPOINT WAS EXECUTED. WE NEED */
    /* TO RESET THE LOCKS IT HAS SET. IF THE OPERATION WAS AN INSERT OR    */
    /* THE ELEMENT WAS MARKED AS DISSAPEARED IT WILL ALSO BE REMOVED       */
    /* FROM THE PAGE                                                       */
    /*                                                                     */
    /* BEGIN BY SEARCHING AFTER THE ELEMENT, WHEN FOUND UNDO THE           */
    /* CHANGES ON THE ELEMENT HEADER. IF IT WAS AN INSERT OPERATION OR     */
    /* MARKED AS DISSAPEARED  PROCEED BY REMOVING THE ELEMENT.             */
    /*---------------------------------------------------------------------*/
    seizeOpRec(signal);
    // Initialise the opRec
    operationRecPtr.p->transId1 = 0;
    operationRecPtr.p->transId2 = RNIL;
    operationRecPtr.p->transactionstate = ACTIVE;
    operationRecPtr.p->commitDeleteCheckFlag = ZFALSE;
    operationRecPtr.p->lockMode = 0;
    operationRecPtr.p->dirtyRead = 0;
    operationRecPtr.p->nodeType = 0;
    operationRecPtr.p->fid = fragrecptr.p->myfid;
    operationRecPtr.p->nextParallelQue = RNIL;
    operationRecPtr.p->prevParallelQue = RNIL;
    operationRecPtr.p->nextQueOp = RNIL;
    operationRecPtr.p->prevQueOp = RNIL;
    operationRecPtr.p->nextSerialQue = RNIL;
    operationRecPtr.p->prevSerialQue = RNIL;
    operationRecPtr.p->elementPage = RNIL;
    operationRecPtr.p->keyinfoPage = RNIL;
    operationRecPtr.p->insertIsDone = ZFALSE;
    operationRecPtr.p->lockOwner = ZFALSE;
    operationRecPtr.p->elementIsDisappeared = ZFALSE;
    operationRecPtr.p->insertDeleteLen = fragrecptr.p->elementLength;
    operationRecPtr.p->longPagePtr = RNIL;
    operationRecPtr.p->longKeyPageIndex = RNIL;
    operationRecPtr.p->scanRecPtr = RNIL;
    operationRecPtr.p->isAccLockReq = ZFALSE;

    // Read operation values from undo page
    operationRecPtr.p->operation = undopageptr.p->undoword[tmpindex];
    tmpindex++;
    operationRecPtr.p->hashValue = undopageptr.p->undoword[tmpindex];
    tmpindex++;
    const Uint32 tkeylen = undopageptr.p->undoword[tmpindex];
    tmpindex++;
    operationRecPtr.p->tupkeylen = tkeylen;
    operationRecPtr.p->fragptr = fragrecptr.i;

    ndbrequire((fragrecptr.p->keyLength == 0) ||
	       ((fragrecptr.p->keyLength != 0) &&
		(fragrecptr.p->keyLength == tkeylen)));
    
    // Read keydata from undo page
    for (Uint32 tmp = 0; tmp < tkeylen; tmp++) {
      signal->theData[7+tmp] = undopageptr.p->undoword[tmpindex];
      tmpindex = tmpindex + 1;
    }//for
    arrGuard((tmpindex - 1), 8192);
    getElement(signal);
    if (tgeResult != ZTRUE) {
      jam();
      signal->theData[0] = RNIL;
      signal->theData[1] = tabptr.i;
      signal->theData[2] = cactiveCheckpId;
      signal->theData[3] = cprevUndoaddress;
      signal->theData[4] = operationRecPtr.p->operation;
      signal->theData[5] = operationRecPtr.p->hashValue;
      signal->theData[6] = operationRecPtr.p->tupkeylen;
      sendSignal(cownBlockref, GSN_DEBUG_SIG, signal, 11, JBA);
      return;
    }//if
    
    operationRecPtr.p->elementPage = gePageptr.i;
    operationRecPtr.p->elementContainer = tgeContainerptr;
    operationRecPtr.p->elementPointer = tgeElementptr;
    operationRecPtr.p->elementIsforward = tgeForward;
    
    commitdelete(signal, true);
    releaseOpRec(signal);
    break;
  }

  default:
    jam();
    progError(__LINE__, 0, "Invalid pagetype in undo log");
    break;

  }//switch(tpageType)

  /*----------------------------------------------------------------------*/
  /*  READ THE PAGE ID AND THE PAGE INDEX OF THE PREVIOUS UNDO LOG RECORD */
  /*  FOR THIS FRAGMENT.                                                  */
  /*----------------------------------------------------------------------*/
  fragrecptr.p->prevUndoposition = undoHeaderPtr->prevUndoAddressForThisFrag;
  /*----------------------------------------------------------------------*/
  /*  READ THE PAGE ID AND THE PAGE INDEX OF THE PREVIOUS UNDO LOG RECORD */
  /*  FOR THIS UNDO LOG.                                                  */
  /*----------------------------------------------------------------------*/
  creadyUndoaddress = cprevUndoaddress;
  cprevUndoaddress = undoHeaderPtr->prevUndoAddress;

  if (fragrecptr.p->prevUndoposition == cminusOne) {
    jam();
    /*---------------------------------------------------------------------*/
    /* WE HAVE NOW EXECUTED ALL UNDO LOG RECORDS FOR THIS FRAGMENT. WE     */
    /* NOW NEED TO UPDATE THE FREE LIST OF OVERFLOW PAGES.                 */
    /*---------------------------------------------------------------------*/
    ndbrequire(fragrecptr.p->nextAllocPage == 0);

    signal->theData[0] = fragrecptr.i;
    sendSignal(cownBlockref, GSN_ACC_OVER_REC, signal, 1, JBB);
    return;
  }//if
  undoNext2Lab(signal);
  return;
}//Dbacc::srDoUndoLab()

void Dbacc::undoNext2Lab(Signal* signal) 
{
  /*---------------------------------------------------------------------------*/
  /*       EXECUTE NEXT UNDO LOG RECORD.                                       */
  /*---------------------------------------------------------------------------*/
  if (cprevUndoaddress == cminusOne) {
    jam();
    /*---------------------------------------------------------------------------*/
    /*       WE HAVE EXECUTED THIS UNDO LOG TO COMPLETION. IT IS NOW TIME TO TAKE*/
    /*       OF THE NEXT UNDO LOG OR REPORT COMPLETION OF UNDO LOG EXECUTION.    */
    /*---------------------------------------------------------------------------*/
    signal->theData[0] = ZSTART_UNDO;
    sendSignal(cownBlockref, GSN_CONTINUEB, signal, 1, JBB);
    return;
  }//if
  if ((creadyUndoaddress >> 13) != (cprevUndoaddress >> 13)) {
    /*---------------------------------------------------------------------------*/
    /*       WE ARE CHANGING PAGE.                                               */
    /*---------------------------------------------------------------------------*/
    if (cactiveSrUndoPage == 0) {
      jam();
      /*---------------------------------------------------------------------------*/
      /*       WE HAVE READ AND EXECUTED ALL UNDO LOG INFORMATION IN THE CURRENTLY */
      /*       READ PAGES. WE STILL HAVE MORE INFORMATION TO READ FROM FILE SINCE  */
      /*       WE HAVEN'T FOUND THE FIRST LOG RECORD IN THE LOG FILE YET.          */
      /*---------------------------------------------------------------------------*/
      srStartUndoLab(signal);
      return;
    } else {
      jam();
      /*---------------------------------------------------------------------------*/
      /*       WE HAVE ANOTHER PAGE READ THAT WE NEED TO EXECUTE.                  */
      /*---------------------------------------------------------------------------*/
      cactiveSrUndoPage = cactiveSrUndoPage - 1;
    }//if
  }//if
  /*---------------------------------------------------------------------------*/
  /*       REAL-TIME BREAK                                                     */
  /*---------------------------------------------------------------------------*/
  /* ******************************< */
  /* NEXTOPERATION                   */
  /* ******************************< */
  sendSignal(cownBlockref, GSN_NEXTOPERATION, signal, 1, JBB);
  return;
}//Dbacc::undoNext2Lab()

/*-----------------------------------------------------------------------------------*/
/*       AFTER COMPLETING THE READING OF DATA PAGES FROM DISK AND EXECUTING THE UNDO */
/*       LOG WE ARE READY TO UPDATE THE FREE LIST OF OVERFLOW PAGES. THIS LIST MUST  */
/*       BE BUILT AGAIN SINCE IT IS NOT CHECKPOINTED. WHEN THE PAGES ARE ALLOCATED   */
/*       THEY ARE NOT PART OF ANY LIST. PAGES CAN EITHER BE PUT IN FREE LIST, NOT    */
/*       IN FREE LIST OR BE PUT INTO LIST OF LONG KEY PAGES.                         */
/*-----------------------------------------------------------------------------------*/
void Dbacc::execACC_OVER_REC(Signal* signal) 
{
  DirRangePtr pnoDirRangePtr;
  DirectoryarrayPtr pnoOverflowDirptr;
  Page8Ptr pnoPageidptr;
  Uint32 tpnoPageType;
  Uint32 toverPageCheck;

  jamEntry();
  fragrecptr.i = signal->theData[0];
  toverPageCheck = 0;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  ndbrequire((fragrecptr.p->nextAllocPage != 0) ||
             (fragrecptr.p->firstOverflowRec == RNIL));
  /*-----------------------------------------------------------------------------------*/
  /*       WHO HAS PUT SOMETHING INTO THE LIST BEFORE WE EVEN STARTED PUTTING THINGS   */
  /*       THERE.                                                                      */
  /*-----------------------------------------------------------------------------------*/
  ndbrequire(fragrecptr.p->loadingFlag == ZTRUE);
  /*---------------------------------------------------------------------------*/
  /*       LOADING HAS STOPPED BEFORE WE HAVE LOADED, SYSTEM ERROR.            */
  /*---------------------------------------------------------------------------*/
  while (toverPageCheck < ZNO_OF_OP_PER_SIGNAL) {
    jam();
    if (fragrecptr.p->nextAllocPage >= fragrecptr.p->lastOverIndex) {
      jam();
      fragrecptr.p->loadingFlag = ZFALSE;
      rootfragrecptr.i = fragrecptr.p->myroot;
      ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
      if (rootfragrecptr.p->lcpPtr != RNIL) {
        jam();
        srCloseDataFileLab(signal);
      } else {
        jam();
        undoNext2Lab(signal);
      }//if
      return;
    }//if
    tmpP = fragrecptr.p->nextAllocPage;
    pnoDirRangePtr.i = fragrecptr.p->overflowdir;
    tmpP2 = tmpP >> 8;
    tmpP = tmpP & 0xff;
    arrGuard(tmpP2, 256);
    ptrCheckGuard(pnoDirRangePtr, cdirrangesize, dirRange);
    if (pnoDirRangePtr.p->dirArray[tmpP2] == RNIL) {
      jam();
      pnoPageidptr.i = RNIL;
    } else {
      pnoOverflowDirptr.i = pnoDirRangePtr.p->dirArray[tmpP2];
      if (pnoOverflowDirptr.i == RNIL) {
        jam();
        pnoPageidptr.i = RNIL;
      } else {
        jam();
        ptrCheckGuard(pnoOverflowDirptr, cdirarraysize, directoryarray);
        pnoPageidptr.i = pnoOverflowDirptr.p->pagep[tmpP];
      }//if
    }//if
    if (pnoPageidptr.i == RNIL) {
      jam();
      seizeOverRec(signal);
      sorOverflowRecPtr.p->dirindex = fragrecptr.p->nextAllocPage;
      sorOverflowRecPtr.p->overpage = RNIL;
      priOverflowRecPtr = sorOverflowRecPtr;
      putRecInFreeOverdir(signal);
    } else {
      ptrCheckGuard(pnoPageidptr, cpagesize, page8);
      tpnoPageType = pnoPageidptr.p->word32[ZPOS_PAGE_TYPE];
      tpnoPageType = (tpnoPageType >> ZPOS_PAGE_TYPE_BIT) & 3;
      if (tpnoPageType == ZLONG_PAGE_TYPE) {
        jam();
	// This is to clean the list parameters. 
	pnoPageidptr.p->word32[ZPOS_PREV_PAGE] = RNIL;
	pnoPageidptr.p->word32[ZPOS_NEXT_PAGE] = RNIL;
        if (pnoPageidptr.p->word32[ZPOS_ARRAY_POS] != 4) {
          jam();
	  /*---------------------------------------------------------------------------*/
	  /*  THE PAGE WAS A LONG PAGE AND IT BELONGED TO A FREE LIST. PUT IT INTO ONE */
	  /*  OF THE FREE LIST THEN.                                                   */
	  /*---------------------------------------------------------------------------*/
	  // Insert page!
	  ipaPagePtr = pnoPageidptr;
          tipaArrayPos = pnoPageidptr.p->word32[ZPOS_ARRAY_POS];
          insertPageArrayList(signal);
        }//if
      } else {
        if (pnoPageidptr.p->word32[ZPOS_ALLOC_CONTAINERS] > ZFREE_LIMIT) {
          jam();
          dbgWord32(pnoPageidptr, ZPOS_OVERFLOWREC, RNIL);
          pnoPageidptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
          ndbrequire(pnoPageidptr.p->word32[ZPOS_PAGE_ID] == fragrecptr.p->nextAllocPage);
        } else {
          jam();
          seizeOverRec(signal);
          sorOverflowRecPtr.p->dirindex = pnoPageidptr.p->word32[ZPOS_PAGE_ID];
          ndbrequire(sorOverflowRecPtr.p->dirindex == fragrecptr.p->nextAllocPage);
          dbgWord32(pnoPageidptr, ZPOS_OVERFLOWREC, sorOverflowRecPtr.i);
          pnoPageidptr.p->word32[ZPOS_OVERFLOWREC] = sorOverflowRecPtr.i;
          sorOverflowRecPtr.p->overpage = pnoPageidptr.i;
          porOverflowRecPtr = sorOverflowRecPtr;
          putOverflowRecInFrag(signal);
          if (pnoPageidptr.p->word32[ZPOS_ALLOC_CONTAINERS] == 0) {
            jam();
            ropPageptr = pnoPageidptr;
            releaseOverpage(signal);
          }//if
        }//if
      }//if
    }//if
    fragrecptr.p->nextAllocPage++;
    toverPageCheck++;
  }//while
  signal->theData[0] = fragrecptr.i;
  sendSignal(cownBlockref, GSN_ACC_OVER_REC, signal, 1, JBB);
}//Dbacc::execACC_OVER_REC()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF SYSTEM RESTART MODULE                                                */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       SCAN MODULE                                                                 */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_SCANREQ                                         START OF A SCAN PROCESS       */
/*                                                     SENDER: LQH,    LEVEL B       */
/*         ENTER ACC_SCANREQ WITH                                                    */
/*                    TUSERPTR,                      LQH SCAN_CONNECT POINTER        */
/*                    TUSERBLOCKREF,                 LQH BLOCK REFERENCE             */
/*                    TABPTR,                        TABLE IDENTITY AND PTR          */
/*                    TFID                           ROOT FRAGMENT IDENTITY          */
/*                    TSCAN_FLAG ,                   = ZCOPY, ZSCAN, ZSCAN_LOCK_ALL  */
/*                                                     ZREADLOCK, ZWRITELOCK         */
/*                    TSCAN_TRID1 ,                  TRANSACTION ID PART 1           */
/*                    TSCAN_TRID2                    TRANSACTION ID PART 2           */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_SCANREQ                                         START OF A SCAN PROCESS       */
/* ******************------------------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACC_SCANREQ(Signal* signal) 
{
  jamEntry();
  AccScanReq * req = (AccScanReq*)&signal->theData[0];
  tuserptr = req->senderData;
  tuserblockref = req->senderRef;
  tabptr.i = req->tableId;
  tfid = req->fragmentNo;
  tscanFlag = req->requestInfo;
  tscanTrid1 = req->transId1;
  tscanTrid2 = req->transId2;
  
  tresult = 0;
  ptrCheckGuard(tabptr, ctablesize, tabrec);
  ndbrequire(getrootfragmentrec(signal,rootfragrecptr, tfid));
  
  Uint32 i;
  for (i = 0; i < MAX_PARALLEL_SCANS_PER_FRAG; i++) {
    jam();
    if (rootfragrecptr.p->scan[i] == RNIL) {
      jam();
      break;
    }
  }
  ndbrequire(i != MAX_PARALLEL_SCANS_PER_FRAG);
  ndbrequire(cfirstFreeScanRec != RNIL);
  seizeScanRec(signal);

  rootfragrecptr.p->scan[i] = scanPtr.i;
  scanPtr.p->scanBucketState =  ScanRec::FIRST_LAP;
  scanPtr.p->scanLockMode = AccScanReq::getLockMode(tscanFlag);
  scanPtr.p->scanKeyinfoFlag = AccScanReq::getKeyinfoFlag(tscanFlag);
  scanPtr.p->scanReadCommittedFlag = AccScanReq::getReadCommittedFlag(tscanFlag);
  
  /* TWELVE BITS OF THE ELEMENT HEAD ARE SCAN */
  /* CHECK BITS. THE MASK NOTES WHICH BIT IS */
  /* ALLOCATED FOR THE ACTIVE SCAN */
  scanPtr.p->scanMask = 1 << i;
  scanPtr.p->scanUserptr = tuserptr;
  scanPtr.p->scanUserblockref = tuserblockref;
  scanPtr.p->scanTrid1 = tscanTrid1;
  scanPtr.p->scanTrid2 = tscanTrid2;
  scanPtr.p->rootPtr = rootfragrecptr.i;
  scanPtr.p->scanLockHeld = 0;
  scanPtr.p->scanOpsAllocated = 0;
  scanPtr.p->scanFirstActiveOp = RNIL;
  scanPtr.p->scanFirstQueuedOp = RNIL;
  scanPtr.p->scanLastQueuedOp = RNIL;
  scanPtr.p->scanFirstLockedOp = RNIL;
  scanPtr.p->scanLastLockedOp = RNIL;
  scanPtr.p->scanState = ScanRec::WAIT_NEXT;
  fragrecptr.i = rootfragrecptr.p->fragmentptr[0];
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  initScanFragmentPart(signal);

  /*------------------------------------------------------*/
  /* We start the timeout loop for the scan process here. */
  /*------------------------------------------------------*/
  ndbrequire(scanPtr.p->scanTimer == 0);
  if (scanPtr.p->scanContinuebCounter == 0) {
    jam();
    scanPtr.p->scanContinuebCounter = 1;
    signal->theData[0] = ZSEND_SCAN_HBREP;
    signal->theData[1] = scanPtr.i;
    sendSignalWithDelay(cownBlockref, GSN_CONTINUEB, signal, 100, 2);
  }//if
  scanPtr.p->scanTimer = scanPtr.p->scanContinuebCounter;
  /* ************************ */
  /*  ACC_SCANCONF            */
  /* ************************ */
  signal->theData[0] = scanPtr.p->scanUserptr;
  signal->theData[1] = scanPtr.i;
  signal->theData[2] = 2;
  /* NR OF LOCAL FRAGMENT */
  signal->theData[3] = rootfragrecptr.p->fragmentid[0];
  signal->theData[4] = rootfragrecptr.p->fragmentid[1];
  signal->theData[7] = AccScanConf::ZNOT_EMPTY_FRAGMENT;
  sendSignal(scanPtr.p->scanUserblockref, GSN_ACC_SCANCONF, signal, 8, JBB);
  /* NOT EMPTY FRAGMENT */
  return;
}//Dbacc::execACC_SCANREQ()

/* ******************--------------------------------------------------------------- */
/*  NEXT_SCANREQ                                       REQUEST FOR NEXT ELEMENT OF   */
/* ******************------------------------------+   A FRAGMENT.                   */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execNEXT_SCANREQ(Signal* signal) 
{
  Uint32 tscanNextFlag;
  jamEntry();
  scanPtr.i = signal->theData[0];
  operationRecPtr.i = signal->theData[1];
  tscanNextFlag = signal->theData[2];
  /* ------------------------------------------ */
  /* 1 = ZCOPY_NEXT  GET NEXT ELEMENT           */
  /* 2 = ZCOPY_NEXT_COMMIT COMMIT THE           */
  /* ACTIVE ELEMENT AND GET THE NEXT ONE        */
  /* 3 = ZCOPY_COMMIT COMMIT THE ACTIVE ELEMENT */
  /* 4 = ZCOPY_REPEAT GET THE ACTIVE ELEMENT    */
  /* 5 = ZCOPY_ABORT RELOCK THE ACTIVE ELEMENT  */
  /* 6 = ZCOPY_CLOSE THE SCAN PROCESS IS READY  */
  /* ------------------------------------------ */
  tresult = 0;
  ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
  ndbrequire(scanPtr.p->scanState == ScanRec::WAIT_NEXT);

  scanPtr.p->scanTimer = scanPtr.p->scanContinuebCounter;
  switch (tscanNextFlag) {
  case ZCOPY_NEXT:
    jam();
    /*empty*/;
    break;
  case ZCOPY_NEXT_COMMIT:
  case ZCOPY_COMMIT:
    jam();
    /* --------------------------------------------------------------------------------- */
    /* COMMIT ACTIVE OPERATION. SEND NEXT SCAN ELEMENT IF IT IS ZCOPY_NEXT_COMMIT.       */
    /* --------------------------------------------------------------------------------- */
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec); 
    fragrecptr.i = operationRecPtr.p->fragptr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    if (!scanPtr.p->scanReadCommittedFlag) {
      if (fragrecptr.p->createLcp == ZTRUE) {
        if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_COMMIT) {
          jam();
	  /*--------------------------------------------------------------*/
	  // We did not have enough undo log buffers to safely commit an
	  // operation. Try again in 10 milliseconds.
	  /*--------------------------------------------------------------*/
          sendSignalWithDelay(cownBlockref, GSN_NEXT_SCANREQ, signal, 10, 3);
          return;
        }//if
      }//if
      commitOperation(signal);
    }//if
    takeOutActiveScanOp(signal);
    releaseOpRec(signal);
    scanPtr.p->scanOpsAllocated--;
    if (tscanNextFlag == ZCOPY_COMMIT) {
      jam();
      signal->theData[0] = scanPtr.p->scanUserptr;
      Uint32 blockNo = refToBlock(scanPtr.p->scanUserblockref);
      EXECUTE_DIRECT(blockNo, GSN_NEXT_SCANCONF, signal, 1);
      return;
    }//if
    break;
  case ZCOPY_CLOSE:
    jam();
    fragrecptr.i = scanPtr.p->activeLocalFrag;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    if (!scanPtr.p->scanReadCommittedFlag) {
      if (fragrecptr.p->createLcp == ZTRUE) {
        if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_OPERATION) {
          jam();
	  /*--------------------------------------------------------------*/
	  // We did not have enough undo log buffers to commit a set of
	  // operations. Try again in 10 milliseconds.
	  /*--------------------------------------------------------------*/
          sendSignalWithDelay(cownBlockref, GSN_NEXT_SCANREQ, signal, 10, 3);
          return;
        }//if
      }//if
    }//if
    /* --------------------------------------------------------------------------------- */
    /* THE SCAN PROCESS IS FINISHED. RELOCK ALL LOCKED EL. RELESE ALL INVOLVED REC.      */
    /* --------------------------------------------------------------------------------- */
    releaseScanLab(signal);
    return;
    break;
  default:
    ndbrequire(false);
    break;
  }//switch
  signal->theData[0] = scanPtr.i;
  signal->theData[1] = AccCheckScan::ZNOT_CHECK_LCP_STOP;
  execACC_CHECK_SCAN(signal);
  return;
}//Dbacc::execNEXT_SCANREQ()

void Dbacc::checkNextBucketLab(Signal* signal) 
{
  DirRangePtr cscDirRangePtr;
  DirectoryarrayPtr cscDirptr;
  DirectoryarrayPtr tnsDirptr;
  Page8Ptr nsPageptr;
  Page8Ptr cscPageidptr;
  Page8Ptr gnsPageidptr;
  Page8Ptr tnsPageidptr;
  Uint32 tnsElementptr;
  Uint32 tnsContainerptr;
  Uint32 tnsIsLocked;
  Uint32 tnsTmp1;
  Uint32 tnsTmp2;
  Uint32 tnsCopyIndex1;
  Uint32 tnsCopyIndex2;
  Uint32 tnsCopyDir;

  tnsCopyDir = scanPtr.p->nextBucketIndex >> fragrecptr.p->k;
  tnsCopyIndex1 = tnsCopyDir >> 8;
  tnsCopyIndex2 = tnsCopyDir & 0xff;
  arrGuard(tnsCopyIndex1, 256);
  tnsDirptr.i = gnsDirRangePtr.p->dirArray[tnsCopyIndex1];
  ptrCheckGuard(tnsDirptr, cdirarraysize, directoryarray);
  tnsPageidptr.i = tnsDirptr.p->pagep[tnsCopyIndex2];
  ptrCheckGuard(tnsPageidptr, cpagesize, page8);
  gnsPageidptr.i = tnsPageidptr.i;
  gnsPageidptr.p = tnsPageidptr.p;
  tnsTmp1 = (1 << fragrecptr.p->k) - 1;
  tgsePageindex = scanPtr.p->nextBucketIndex & tnsTmp1;
  gsePageidptr.i = gnsPageidptr.i;
  gsePageidptr.p = gnsPageidptr.p;
  if (!getScanElement(signal)) {
    scanPtr.p->nextBucketIndex++;
    if (scanPtr.p->scanBucketState ==  ScanRec::SECOND_LAP) {
      if (scanPtr.p->nextBucketIndex > scanPtr.p->maxBucketIndexToRescan) {
	/* --------------------------------------------------------------------------------- */
	// We have finished the rescan phase. We are ready to proceed with the next fragment part.
	/* --------------------------------------------------------------------------------- */
        jam();
        checkNextFragmentLab(signal);
        return;
      }//if
    } else if (scanPtr.p->scanBucketState ==  ScanRec::FIRST_LAP) {
      if ((fragrecptr.p->p + fragrecptr.p->maxp) < scanPtr.p->nextBucketIndex) {
	/* --------------------------------------------------------------------------------- */
	// All buckets have been scanned a first time.
	/* --------------------------------------------------------------------------------- */
        if (scanPtr.p->minBucketIndexToRescan == 0xFFFFFFFF) {
          jam();
	  /* --------------------------------------------------------------------------------- */
	  // We have not had any merges behind the scan. Thus it is not necessary to perform
	  // any rescan any buckets and we can proceed immediately with the next fragment part.
	  /* --------------------------------------------------------------------------------- */
          checkNextFragmentLab(signal);
          return;
        } else {
          jam();
	  /* --------------------------------------------------------------------------------- */
	  // Some buckets are in the need of rescanning due to merges that have moved records
	  // from in front of the scan to behind the scan. During the merges we kept track of
	  // which buckets that need a rescan. We start with the minimum and end with maximum.
	  /* --------------------------------------------------------------------------------- */
          scanPtr.p->nextBucketIndex = scanPtr.p->minBucketIndexToRescan;
	  scanPtr.p->scanBucketState =  ScanRec::SECOND_LAP;
          if (scanPtr.p->maxBucketIndexToRescan > (fragrecptr.p->p + fragrecptr.p->maxp)) {
            jam();
	    /* --------------------------------------------------------------------------------- */
	    // If we have had so many merges that the maximum is bigger than the number of buckets
	    // then we will simply satisfy ourselves with scanning to the end. This can only happen
	    // after bringing down the total of buckets to less than half and the minimum should
	    // be 0 otherwise there is some problem.
	    /* --------------------------------------------------------------------------------- */
            if (scanPtr.p->minBucketIndexToRescan != 0) {
              jam();
              sendSystemerror(signal);
              return;
            }//if
            scanPtr.p->maxBucketIndexToRescan = fragrecptr.p->p + fragrecptr.p->maxp;
          }//if
        }//if
      }//if
    }//if
    if ((scanPtr.p->scanBucketState ==  ScanRec::FIRST_LAP) &&
        (scanPtr.p->nextBucketIndex <= scanPtr.p->startNoOfBuckets)) {
      /* --------------------------------------------------------------------------------- */
      // We will only reset the scan indicator on the buckets that existed at the start of the
      // scan. The others will be handled by the split and merge code.
      /* --------------------------------------------------------------------------------- */
      tnsTmp2 = (1 << fragrecptr.p->k) - 1;
      trsbPageindex = scanPtr.p->nextBucketIndex & tnsTmp2;
      if (trsbPageindex != 0) {
        jam();
        rsbPageidptr.i = gnsPageidptr.i;
        rsbPageidptr.p = gnsPageidptr.p;
      } else {
        jam();
        cscDirRangePtr.i = fragrecptr.p->directory;
        tmpP = scanPtr.p->nextBucketIndex >> fragrecptr.p->k;
        tmpP2 = tmpP >> 8;
        tmpP = tmpP & 0xff;
        ptrCheckGuard(cscDirRangePtr, cdirrangesize, dirRange);
        arrGuard(tmpP2, 256);
        cscDirptr.i = cscDirRangePtr.p->dirArray[tmpP2];
        ptrCheckGuard(cscDirptr, cdirarraysize, directoryarray);
        cscPageidptr.i = cscDirptr.p->pagep[tmpP];
        ptrCheckGuard(cscPageidptr, cpagesize, page8);
        tmp1 = (1 << fragrecptr.p->k) - 1;
        trsbPageindex = scanPtr.p->nextBucketIndex & tmp1;
        rsbPageidptr.i = cscPageidptr.i;
        rsbPageidptr.p = cscPageidptr.p;
      }//if
      releaseScanBucket(signal);
    }//if
    signal->theData[0] = scanPtr.i;
    signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
    sendSignal(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 2, JBB);
    return;
  }//if
  /* ----------------------------------------------------------------------- */
  /*	AN ELEMENT WHICH HAVE NOT BEEN SCANNED WAS FOUND. WE WILL PREPARE IT */
  /*	TO BE SENT TO THE LQH BLOCK FOR FURTHER PROCESSING.                  */
  /*    WE ASSUME THERE ARE OPERATION RECORDS AVAILABLE SINCE LQH SHOULD HAVE*/
  /*    GUARANTEED THAT THROUGH EARLY BOOKING.                               */
  /* ----------------------------------------------------------------------- */
  tnsIsLocked = tgseIsLocked;
  tnsElementptr = tgseElementptr;
  tnsContainerptr = tgseContainerptr;
  nsPageptr.i = gsePageidptr.i;
  nsPageptr.p = gsePageidptr.p;
  seizeOpRec(signal);
  tisoIsforward = tgseIsforward;
  tisoContainerptr = tnsContainerptr;
  tisoElementptr = tnsElementptr;
  isoPageptr.i = nsPageptr.i;
  isoPageptr.p = nsPageptr.p;
  initScanOpRec(signal);
 
  if (!tnsIsLocked){
    if (!scanPtr.p->scanReadCommittedFlag) {
      jam();
      slPageidptr = nsPageptr;
      tslElementptr = tnsElementptr;
      setlock(signal);
      insertLockOwnersList(signal, operationRecPtr);
    }//if
  } else {
    arrGuard(tnsElementptr, 2048);
    queOperPtr.i = 
      ElementHeader::getOpPtrI(nsPageptr.p->word32[tnsElementptr]);
    ptrCheckGuard(queOperPtr, coprecsize, operationrec);
    if (queOperPtr.p->elementIsDisappeared == ZTRUE) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // If the lock owner indicates the element is disappeared then we will not report this
      // tuple. We will continue with the next tuple.
      /* --------------------------------------------------------------------------------- */
      releaseOpRec(signal);
      scanPtr.p->scanOpsAllocated--;
      signal->theData[0] = scanPtr.i;
      signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
      sendSignal(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 2, JBB);
      return;
    }//if
    if (!scanPtr.p->scanReadCommittedFlag) {
      Uint32 return_result;
      if (scanPtr.p->scanLockMode == ZREADLOCK) {
        jam();
        priPageptr = nsPageptr;
        tpriElementptr = tnsElementptr;
        return_result = placeReadInLockQueue(signal);
      } else {
        jam();
        pwiPageptr = nsPageptr;
        tpwiElementptr = tnsElementptr;
        return_result = placeWriteInLockQueue(signal);
      }//if
      if (return_result == ZSERIAL_QUEUE) {
	/* --------------------------------------------------------------------------------- */
	/*	WE PLACED THE OPERATION INTO A SERIAL QUEUE AND THUS WE HAVE TO WAIT FOR     */
	/*	THE LOCK TO BE RELEASED. WE CONTINUE WITH THE NEXT ELEMENT.                  */
	/* --------------------------------------------------------------------------------- */
        putOpScanLockQue();	/* PUT THE OP IN A QUE IN THE SCAN REC */
        signal->theData[0] = scanPtr.i;
        signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
        sendSignal(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 2, JBB);
        return;
      } else if (return_result == ZWRITE_ERROR) {
        jam();
	/* --------------------------------------------------------------------------------- */
	// The tuple is either not committed yet or a delete in the same transaction (not
	// possible here since we are a scan). Thus we simply continue with the next tuple.
	/* --------------------------------------------------------------------------------- */
        releaseOpRec(signal);
	scanPtr.p->scanOpsAllocated--;
        signal->theData[0] = scanPtr.i;
        signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
        sendSignal(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 2, JBB);
        return;
      }//if
      ndbassert(return_result == ZPARALLEL_QUEUE);
    }//if
  }//if
  /* --------------------------------------------------------------------------------- */
  // Committed read proceed without caring for locks immediately down here except when
  // the tuple was deleted permanently and no new operation has inserted it again.
  /* --------------------------------------------------------------------------------- */
  putActiveScanOp(signal);
  sendNextScanConf(signal);
  return;
}//Dbacc::checkNextBucketLab()


void Dbacc::checkNextFragmentLab(Signal* signal) 
{
  RootfragmentrecPtr cnfRootfragrecptr;
  
  cnfRootfragrecptr.i = fragrecptr.p->myroot;
  ptrCheckGuard(cnfRootfragrecptr, crootfragmentsize, rootfragmentrec);  
  if (scanPtr.p->activeLocalFrag == cnfRootfragrecptr.p->fragmentptr[0]) {
    jam();
    fragrecptr.i = cnfRootfragrecptr.p->fragmentptr[1];
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    initScanFragmentPart(signal);
    signal->theData[0] = scanPtr.i;
    signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
    sendSignal(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 2, JBB);
    return;
  } else {
    if (scanPtr.p->activeLocalFrag == cnfRootfragrecptr.p->fragmentptr[1]) {
      jam();
      /* --------------------------------------------------------------------------------- */
      // Both fragments have completed their scan part and we can indicate that the scan is
      // now completed.
      /* --------------------------------------------------------------------------------- */
      scanPtr.p->scanBucketState =  ScanRec::SCAN_COMPLETED;
      /*empty*/;
    } else {
      jam();
      /* ALL ELEMENTS ARE SENT */
      sendSystemerror(signal);
    }//if
  }//if
  /* --------------------------------------------------------------------------------- */
  // The scan is completed. ACC_CHECK_SCAN will perform all the necessary checks to see
  // what the next step is.
  /* --------------------------------------------------------------------------------- */
  signal->theData[0] = scanPtr.i;
  signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
  execACC_CHECK_SCAN(signal);
  return;
}//Dbacc::checkNextFragmentLab()

void Dbacc::initScanFragmentPart(Signal* signal)
{
  DirRangePtr cnfDirRangePtr;
  DirectoryarrayPtr cnfDirptr;
  Page8Ptr cnfPageidptr;
  /* --------------------------------------------------------------------------------- */
  // Set the active fragment part.
  // Set the current bucket scanned to the first.
  // Start with the first lap.
  // Remember the number of buckets at start of the scan.
  // Set the minimum and maximum to values that will always be smaller and larger than.
  // Reset the scan indicator on the first bucket.
  /* --------------------------------------------------------------------------------- */
  scanPtr.p->activeLocalFrag = fragrecptr.i;
  scanPtr.p->nextBucketIndex = 0;	/* INDEX OF SCAN BUCKET */
  scanPtr.p->scanBucketState = ScanRec::FIRST_LAP;
  scanPtr.p->startNoOfBuckets = fragrecptr.p->p + fragrecptr.p->maxp;
  scanPtr.p->minBucketIndexToRescan = 0xFFFFFFFF;
  scanPtr.p->maxBucketIndexToRescan = 0;
  cnfDirRangePtr.i = fragrecptr.p->directory;
  ptrCheckGuard(cnfDirRangePtr, cdirrangesize, dirRange);
  cnfDirptr.i = cnfDirRangePtr.p->dirArray[0];
  ptrCheckGuard(cnfDirptr, cdirarraysize, directoryarray);
  cnfPageidptr.i = cnfDirptr.p->pagep[0];
  ptrCheckGuard(cnfPageidptr, cpagesize, page8);
  trsbPageindex = scanPtr.p->nextBucketIndex & ((1 << fragrecptr.p->k) - 1);
  rsbPageidptr.i = cnfPageidptr.i;
  rsbPageidptr.p = cnfPageidptr.p;
  releaseScanBucket(signal);
}//Dbacc::initScanFragmentPart()

/* --------------------------------------------------------------------------------- */
/* FLAG = 6 = ZCOPY_CLOSE THE SCAN PROCESS IS READY OR ABORTED. ALL OPERATION IN THE */
/* ACTIVE OR WAIT QUEUE ARE RELEASED, SCAN FLAG OF ROOT FRAG IS RESET AND THE SCAN   */
/* RECORD IS RELEASED.                                                               */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseScanLab(Signal* signal) 
{
  releaseAndCommitActiveOps(signal);
  releaseAndCommitQueuedOps(signal);
  releaseAndAbortLockedOps(signal);

  rootfragrecptr.i = scanPtr.p->rootPtr;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  for (tmp = 0; tmp < MAX_PARALLEL_SCANS_PER_FRAG; tmp++) {
    jam();
    if (rootfragrecptr.p->scan[tmp] == scanPtr.i) {
      jam();
      rootfragrecptr.p->scan[tmp] = RNIL;
    }//if
  }//for
  // Stops the heartbeat.
  scanPtr.p->scanTimer = 0;
  signal->theData[0] = scanPtr.p->scanUserptr;
  signal->theData[1] = RNIL;
  signal->theData[2] = RNIL;
  sendSignal(scanPtr.p->scanUserblockref, GSN_NEXT_SCANCONF, signal, 3, JBB);
  releaseScanRec(signal);
  return;
}//Dbacc::releaseScanLab()


void Dbacc::releaseAndCommitActiveOps(Signal* signal) 
{
  OperationrecPtr trsoOperPtr;
  operationRecPtr.i = scanPtr.p->scanFirstActiveOp;
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    trsoOperPtr.i = operationRecPtr.p->nextOp;
    fragrecptr.i = operationRecPtr.p->fragptr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    if (!scanPtr.p->scanReadCommittedFlag) {
      jam();
      commitOperation(signal);
    }//if
    takeOutActiveScanOp(signal);
    releaseOpRec(signal);
    scanPtr.p->scanOpsAllocated--;
    operationRecPtr.i = trsoOperPtr.i;
  }//if
}//Dbacc::releaseAndCommitActiveOps()


void Dbacc::releaseAndCommitQueuedOps(Signal* signal) 
{
  OperationrecPtr trsoOperPtr;
  operationRecPtr.i = scanPtr.p->scanFirstQueuedOp;
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    trsoOperPtr.i = operationRecPtr.p->nextOp;
    fragrecptr.i = operationRecPtr.p->fragptr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    if (!scanPtr.p->scanReadCommittedFlag) {
      jam();
      commitOperation(signal);
    }//if
    takeOutReadyScanQueue(signal);
    releaseOpRec(signal);
    scanPtr.p->scanOpsAllocated--;
    operationRecPtr.i = trsoOperPtr.i;
  }//if
}//Dbacc::releaseAndCommitQueuedOps()

void Dbacc::releaseAndAbortLockedOps(Signal* signal) {

  OperationrecPtr trsoOperPtr;
  operationRecPtr.i = scanPtr.p->scanFirstLockedOp;
  while (operationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    trsoOperPtr.i = operationRecPtr.p->nextOp;
    fragrecptr.i = operationRecPtr.p->fragptr;
    ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
    if (!scanPtr.p->scanReadCommittedFlag) {
      jam();
      abortOperation(signal);
    }//if
    takeOutScanLockQueue(scanPtr.i);
    releaseOpRec(signal);
    scanPtr.p->scanOpsAllocated--;
    operationRecPtr.i = trsoOperPtr.i;
  }//if
}//Dbacc::releaseAndAbortLockedOps()

/* 3.18.3  ACC_CHECK_SCAN */
/* ******************--------------------------------------------------------------- */
/* ACC_CHECK_SCAN                                                                    */
/*          ENTER ACC_CHECK_SCAN WITH                                                */
/*                    SCAN_PTR                                                       */
/* ******************--------------------------------------------------------------- */
/* ******************--------------------------------------------------------------- */
/* ACC_CHECK_SCAN                                                                    */
/* ******************------------------------------+                                 */
void Dbacc::execACC_CHECK_SCAN(Signal* signal) 
{
  Uint32 TcheckLcpStop;
  jamEntry();
  scanPtr.i = signal->theData[0];
  TcheckLcpStop = signal->theData[1];
  ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
  while (scanPtr.p->scanFirstQueuedOp != RNIL) {
    jam();
    //----------------------------------------------------------------------------
    // An operation has been released from the lock queue. We are in the parallel
    // queue of this tuple. We are ready to report the tuple now.
    //----------------------------------------------------------------------------
    operationRecPtr.i = scanPtr.p->scanFirstQueuedOp;
    ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
    takeOutReadyScanQueue(signal);
    if (operationRecPtr.p->elementIsDisappeared == ZTRUE) {
      jam();
      fragrecptr.i = operationRecPtr.p->fragptr;
      ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
      if (fragrecptr.p->createLcp == ZTRUE) {
        if (remainingUndoPages() < ZMIN_UNDO_PAGES_AT_COMMIT) {
          jam();
	  /*--------------------------------------------------------------*/
	  // We did not have enough undo log buffers to safely abort an
	  // operation. Try again in 10 milliseconds.
	  /*--------------------------------------------------------------*/
          sendSignalWithDelay(cownBlockref, GSN_ACC_CHECK_SCAN, signal, 10, 2);
          return;
        }//if
      }//if
      abortOperation(signal);
      releaseOpRec(signal);
      scanPtr.p->scanOpsAllocated--;
      continue;
    }//if
    putActiveScanOp(signal);
    sendNextScanConf(signal);
    return;
  }//while


  if ((scanPtr.p->scanBucketState == ScanRec::SCAN_COMPLETED) &&
      (scanPtr.p->scanLockHeld == 0)) {
    jam();
    //----------------------------------------------------------------------------
    // The scan is now completed and there are no more locks outstanding. Thus we
    // we will report the scan as completed to LQH.
    //----------------------------------------------------------------------------
    signal->theData[0] = scanPtr.p->scanUserptr;
    signal->theData[1] = RNIL;
    signal->theData[2] = RNIL;
    sendSignal(scanPtr.p->scanUserblockref, GSN_NEXT_SCANCONF, signal, 3, JBB);
    return;
  }//if
  if (TcheckLcpStop == AccCheckScan::ZCHECK_LCP_STOP) {
  //---------------------------------------------------------------------------
  // To ensure that the block of the fragment occurring at the start of a local
  // checkpoint is not held for too long we insert a release and reacquiring of
  // that lock here. This is performed in LQH. If we are blocked or if we have
  // requested a sleep then we will receive RNIL in the returning signal word.
  //---------------------------------------------------------------------------
    signal->theData[0] = scanPtr.p->scanUserptr;
    signal->theData[1] =
                    ((scanPtr.p->scanLockHeld >= ZSCAN_MAX_LOCK) ||
                     (scanPtr.p->scanBucketState ==  ScanRec::SCAN_COMPLETED));
    EXECUTE_DIRECT(DBLQH, GSN_CHECK_LCP_STOP, signal, 2);
    jamEntry();
    if (signal->theData[0] == RNIL) {
      jam();
      return;
    }//if
  }//if
  /**
   * If we have more than max locks held OR
   * scan is completed AND at least one lock held
   *  - Inform LQH about this condition
   */
  if ((scanPtr.p->scanLockHeld >= ZSCAN_MAX_LOCK) ||
      (cfreeopRec == RNIL) ||
      ((scanPtr.p->scanBucketState == ScanRec::SCAN_COMPLETED) &&
       (scanPtr.p->scanLockHeld > 0))) {
    jam();
    signal->theData[0] = scanPtr.p->scanUserptr;
    signal->theData[1] = RNIL; // No operation is returned
    signal->theData[2] = 512;  // MASV  
    sendSignal(scanPtr.p->scanUserblockref, GSN_NEXT_SCANCONF, signal, 3, JBB);
    return;
  }
  if (scanPtr.p->scanBucketState == ScanRec::SCAN_COMPLETED) {
    jam();
    signal->theData[0] = scanPtr.i;
    signal->theData[1] = AccCheckScan::ZCHECK_LCP_STOP;
    execACC_CHECK_SCAN(signal);
    return;
  }//if

  scanPtr.p->scanTimer = scanPtr.p->scanContinuebCounter;

  fragrecptr.i = scanPtr.p->activeLocalFrag;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  gnsDirRangePtr.i = fragrecptr.p->directory;
  ptrCheckGuard(gnsDirRangePtr, cdirrangesize, dirRange);
  checkNextBucketLab(signal);
  return;
}//Dbacc::execACC_CHECK_SCAN()

/* ******************---------------------------------------------------- */
/* ACC_TO_REQ                                       PERFORM A TAKE OVER   */
/* ******************-------------------+                                 */
/*   SENDER: LQH,    LEVEL B       */
void Dbacc::execACC_TO_REQ(Signal* signal) 
{
  OperationrecPtr tatrOpPtr;

  jamEntry();
  tatrOpPtr.i = signal->theData[1];     /*  OPER PTR OF ACC                */
  ptrCheckGuard(tatrOpPtr, coprecsize, operationrec);
  if (tatrOpPtr.p->operation == ZSCAN_OP) {
    tatrOpPtr.p->transId1 = signal->theData[2];
    tatrOpPtr.p->transId2 = signal->theData[3];
  } else {
    jam();
    signal->theData[0] = cminusOne;
    signal->theData[1] = ZTO_OP_STATE_ERROR;
  }//if
  return;
}//Dbacc::execACC_TO_REQ()

/* --------------------------------------------------------------------------------- */
/* CONTAINERINFO                                                                     */
/*        INPUT:                                                                     */
/*               CI_PAGEIDPTR (PAGE POINTER WHERE CONTAINER RESIDES)                 */
/*               TCI_PAGEINDEX (INDEX OF CONTAINER, USED TO CALCULATE PAGE INDEX)    */
/*               TCI_ISFORWARD (DIRECTION OF CONTAINER FORWARD OR BACKWARD)          */
/*                                                                                   */
/*        OUTPUT:                                                                    */
/*               TCI_CONTAINERPTR (A POINTER TO THE HEAD OF THE CONTAINER)           */
/*               TCI_CONTAINERLEN (LENGTH OF THE CONTAINER                           */
/*               TCI_CONTAINERHEAD (THE HEADER OF THE CONTAINER)                     */
/*                                                                                   */
/*        DESCRIPTION: THE ADDRESS OF THE CONTAINER WILL BE CALCULATED AND           */
/*                     ALL INFORMATION ABOUT THE CONTAINER WILL BE READ              */
/* --------------------------------------------------------------------------------- */
void Dbacc::containerinfo(Signal* signal) 
{
  tciContainerptr = (tciPageindex << ZSHIFT_PLUS) - (tciPageindex << ZSHIFT_MINUS);
  if (tciIsforward == ZTRUE) {
    jam();
    tciContainerptr = tciContainerptr + ZHEAD_SIZE;
  } else {
    jam();
    tciContainerptr = ((tciContainerptr + ZHEAD_SIZE) + ZBUF_SIZE) - ZCON_HEAD_SIZE;
  }//if
  arrGuard(tciContainerptr, 2048);
  tciContainerhead = ciPageidptr.p->word32[tciContainerptr];
  tciContainerlen = tciContainerhead >> 26;
}//Dbacc::containerinfo()

/* --------------------------------------------------------------------------------- */
/* GET_SCAN_ELEMENT                                                                  */
/*       INPUT:          GSE_PAGEIDPTR                                               */
/*                       TGSE_PAGEINDEX                                              */
/*       OUTPUT:         TGSE_IS_LOCKED (IF TRESULT /= ZFALSE)                       */
/*                       GSE_PAGEIDPTR                                               */
/*                       TGSE_PAGEINDEX                                              */
/* --------------------------------------------------------------------------------- */
bool Dbacc::getScanElement(Signal* signal) 
{
  tgseIsforward = ZTRUE;
 NEXTSEARCH_SCAN_LOOP:
  ciPageidptr.i = gsePageidptr.i;
  ciPageidptr.p = gsePageidptr.p;
  tciPageindex = tgsePageindex;
  tciIsforward = tgseIsforward;
  containerinfo(signal);
  sscPageidptr.i = gsePageidptr.i;
  sscPageidptr.p = gsePageidptr.p;
  tsscContainerlen = tciContainerlen;
  tsscContainerptr = tciContainerptr;
  tsscIsforward = tciIsforward;
  if (searchScanContainer(signal)) {
    jam();
    tgseIsLocked = tsscIsLocked;
    tgseElementptr = tsscElementptr;
    tgseContainerptr = tsscContainerptr;
    return true;
  }//if
  if (((tciContainerhead >> 7) & 0x3) != 0) {
    jam();
    nciPageidptr.i = gsePageidptr.i;
    nciPageidptr.p = gsePageidptr.p;
    tnciContainerhead = tciContainerhead;
    tnciContainerptr = tciContainerptr;
    nextcontainerinfo(signal);
    tgsePageindex = tnciPageindex;
    gsePageidptr.i = nciPageidptr.i;
    gsePageidptr.p = nciPageidptr.p;
    tgseIsforward = tnciIsforward;
    goto NEXTSEARCH_SCAN_LOOP;
  }//if
  return false;
}//Dbacc::getScanElement()

/* --------------------------------------------------------------------------------- */
/*  INIT_SCAN_OP_REC                                                                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::initScanOpRec(Signal* signal) 
{
  Uint32 tisoTmp;
  Uint32 tisoLocalPtr;
  Uint32 guard24;
  Uint32 tisoPageIndex;
  Uint32 tisoPagedir;
  DirRangePtr tisoOverflowrangeptr;
  DirectoryarrayPtr tisoOverflowDirptr;
  Page8Ptr tisoPageptr;

  scanPtr.p->scanOpsAllocated++;

  operationRecPtr.p->scanRecPtr = scanPtr.i;
  operationRecPtr.p->operation = ZSCAN_OP;
  operationRecPtr.p->transactionstate = ACTIVE;
  operationRecPtr.p->commitDeleteCheckFlag = ZFALSE;
  operationRecPtr.p->lockMode = scanPtr.p->scanLockMode;
  operationRecPtr.p->fid = fragrecptr.p->myfid;
  operationRecPtr.p->fragptr = fragrecptr.i;
  operationRecPtr.p->elementIsDisappeared = ZFALSE;
  operationRecPtr.p->nextParallelQue = RNIL;
  operationRecPtr.p->prevParallelQue = RNIL;
  operationRecPtr.p->nextSerialQue = RNIL;
  operationRecPtr.p->prevSerialQue = RNIL;
  operationRecPtr.p->prevQueOp = RNIL;
  operationRecPtr.p->nextQueOp = RNIL;
  operationRecPtr.p->keyinfoPage = RNIL; // Safety precaution 
  operationRecPtr.p->transId1 = scanPtr.p->scanTrid1;
  operationRecPtr.p->transId2 = scanPtr.p->scanTrid2;
  operationRecPtr.p->lockOwner = ZFALSE;
  operationRecPtr.p->dirtyRead = 0;
  operationRecPtr.p->nodeType = 0; // Not a stand-by node
  operationRecPtr.p->elementIsforward = tisoIsforward;
  operationRecPtr.p->elementContainer = tisoContainerptr;
  operationRecPtr.p->elementPointer = tisoElementptr;
  operationRecPtr.p->elementPage = isoPageptr.i;
  operationRecPtr.p->isAccLockReq = ZFALSE;
  tisoLocalPtr = tisoElementptr + tisoIsforward;
  guard24 = fragrecptr.p->localkeylen - 1;
  for (tisoTmp = 0; tisoTmp <= guard24; tisoTmp++) {
    arrGuard(tisoTmp, 2);
    arrGuard(tisoLocalPtr, 2048);
    operationRecPtr.p->localdata[tisoTmp] = isoPageptr.p->word32[tisoLocalPtr];
    tisoLocalPtr = tisoLocalPtr + tisoIsforward;
  }//for
  arrGuard(tisoLocalPtr, 2048);
  operationRecPtr.p->keydata[0] = isoPageptr.p->word32[tisoLocalPtr];
  if (fragrecptr.p->keyLength != 0) {
    jam();
    operationRecPtr.p->tupkeylen = fragrecptr.p->keyLength;
    guard24 = fragrecptr.p->keyLength - 1;
    for (tisoTmp = 0; tisoTmp <= guard24; tisoTmp++) {
      arrGuard(tisoTmp, 8);
      arrGuard(tisoLocalPtr, 2048);
      operationRecPtr.p->keydata[tisoTmp] = isoPageptr.p->word32[tisoLocalPtr];
      tisoLocalPtr = tisoLocalPtr + tisoIsforward;
    }//for
  } else {
    // Long key handling. Put the long key reference in the operation records.
    tisoPageIndex = operationRecPtr.p->keydata[0] & 0x3ff;
    arrGuard(ZWORDS_IN_PAGE - tisoPageIndex, 2048);

    tisoPagedir = operationRecPtr.p->keydata[0] >> 10;
    arrGuard((tisoPagedir >> 8), 256);

    tisoOverflowrangeptr.i = fragrecptr.p->overflowdir;
    ptrCheckGuard(tisoOverflowrangeptr, cdirrangesize, dirRange);
    
    tisoOverflowDirptr.i = tisoOverflowrangeptr.p->dirArray[tisoPagedir >> 8];
    ptrCheckGuard(tisoOverflowDirptr, cdirarraysize, directoryarray);

    tisoPageptr.i = tisoOverflowDirptr.p->pagep[tisoPagedir & 0xff];
    ptrCheckGuard(tisoPageptr, cpagesize, page8);

    operationRecPtr.p->longPagePtr = tisoPageptr.i;
    operationRecPtr.p->longKeyPageIndex = tisoPageIndex;

    // Read length of key from page
    Uint32 tmp = tisoPageptr.p->word32[ZWORDS_IN_PAGE - tisoPageIndex];
    operationRecPtr.p->tupkeylen = tmp >> 16;
  }
}//Dbacc::initScanOpRec()

/* --------------------------------------------------------------------------------- */
/* NEXTCONTAINERINFO                                                                 */
/*        DESCRIPTION:THE CONTAINER HEAD WILL BE CHECKED TO CALCULATE INFORMATION    */
/*                    ABOUT NEXT CONTAINER IN THE BUCKET.                            */
/*          INPUT:       TNCI_CONTAINERHEAD                                          */
/*                       NCI_PAGEIDPTR                                               */
/*                       TNCI_CONTAINERPTR                                           */
/*          OUTPUT:                                                                  */
/*             TNCI_PAGEINDEX (INDEX FROM WHICH PAGE INDEX CAN BE CALCULATED).       */
/*             TNCI_ISFORWARD (IS THE NEXT CONTAINER FORWARD (+1) OR BACKWARD (-1)   */
/*             NCI_PAGEIDPTR (PAGE REFERENCE OF NEXT CONTAINER)                      */
/* --------------------------------------------------------------------------------- */
void Dbacc::nextcontainerinfo(Signal* signal) 
{
  tnciNextSamePage = (tnciContainerhead >> 9) & 0x1;	/* CHECK BIT FOR CHECKING WHERE */
  /* THE NEXT CONTAINER IS IN THE SAME PAGE */
  tnciPageindex = tnciContainerhead & 0x7f;	/* NEXT CONTAINER PAGE INDEX 7 BITS */
  if (((tnciContainerhead >> 7) & 3) == ZLEFT) {
    jam();
    tnciIsforward = ZTRUE;
  } else {
    jam();
    tnciIsforward = cminusOne;
  }//if
  if (tnciNextSamePage == ZFALSE) {
    jam();
    /* NEXT CONTAINER IS IN AN OVERFLOW PAGE */
    arrGuard(tnciContainerptr + 1, 2048);
    tnciTmp = nciPageidptr.p->word32[tnciContainerptr + 1];
    nciOverflowrangeptr.i = fragrecptr.p->overflowdir;
    ptrCheckGuard(nciOverflowrangeptr, cdirrangesize, dirRange);
    arrGuard((tnciTmp >> 8), 256);
    nciOverflowDirptr.i = nciOverflowrangeptr.p->dirArray[tnciTmp >> 8];
    ptrCheckGuard(nciOverflowDirptr, cdirarraysize, directoryarray);
    nciPageidptr.i = nciOverflowDirptr.p->pagep[tnciTmp & 0xff];
    ptrCheckGuard(nciPageidptr, cpagesize, page8);
  }//if
}//Dbacc::nextcontainerinfo()

/* --------------------------------------------------------------------------------- */
/* PUT_ACTIVE_SCAN_OP                                                                */
/* --------------------------------------------------------------------------------- */
void Dbacc::putActiveScanOp(Signal* signal) 
{
  OperationrecPtr pasOperationRecPtr;
  pasOperationRecPtr.i = scanPtr.p->scanFirstActiveOp;
  if (pasOperationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(pasOperationRecPtr, coprecsize, operationrec);
    pasOperationRecPtr.p->prevOp = operationRecPtr.i;
  }//if
  operationRecPtr.p->nextOp = pasOperationRecPtr.i;
  operationRecPtr.p->prevOp = RNIL;
  scanPtr.p->scanFirstActiveOp = operationRecPtr.i;
}//Dbacc::putActiveScanOp()

/**
 * putOpScanLockQueue
 *
 * Description: Put an operation in the doubly linked 
 * lock list on a scan record. The list is used to 
 * keep track of which operations belonging
 * to the scan are put in serial lock list of another 
 * operation
 *
 * @note Use takeOutScanLockQueue to remove an operation
 *       from the list
 *
 */
void Dbacc::putOpScanLockQue() 
{

#ifdef VM_TRACE
  // DEBUG CODE
  // Check that there are as many operations in the lockqueue as 
  // scanLockHeld indicates
  OperationrecPtr tmpOp;
  int numLockedOpsBefore = 0;
  tmpOp.i = scanPtr.p->scanFirstLockedOp;
  while(tmpOp.i != RNIL){
    numLockedOpsBefore++;
    ptrCheckGuard(tmpOp, coprecsize, operationrec);
    if (tmpOp.p->nextOp == RNIL)
      ndbrequire(tmpOp.i == scanPtr.p->scanLastLockedOp);
    tmpOp.i = tmpOp.p->nextOp;
  } 
  ndbrequire(numLockedOpsBefore==scanPtr.p->scanLockHeld);
#endif

  OperationrecPtr pslOperationRecPtr;
  ScanRec theScanRec;
  theScanRec = *scanPtr.p;

  pslOperationRecPtr.i = scanPtr.p->scanLastLockedOp;
  operationRecPtr.p->prevOp = pslOperationRecPtr.i;
  operationRecPtr.p->nextOp = RNIL;
  if (pslOperationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(pslOperationRecPtr, coprecsize, operationrec);
    pslOperationRecPtr.p->nextOp = operationRecPtr.i;
  } else {
    jam();
    scanPtr.p->scanFirstLockedOp = operationRecPtr.i;
  }//if
  scanPtr.p->scanLastLockedOp = operationRecPtr.i;
  scanPtr.p->scanLockHeld++;

}//Dbacc::putOpScanLockQue()

/* --------------------------------------------------------------------------------- */
/* PUT_READY_SCAN_QUEUE                                                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::putReadyScanQueue(Signal* signal, Uint32 scanRecIndex) 
{
  OperationrecPtr prsOperationRecPtr;
  ScanRecPtr TscanPtr;

  TscanPtr.i = scanRecIndex;
  ptrCheckGuard(TscanPtr, cscanRecSize, scanRec);

  prsOperationRecPtr.i = TscanPtr.p->scanLastQueuedOp;
  operationRecPtr.p->prevOp = prsOperationRecPtr.i;
  operationRecPtr.p->nextOp = RNIL;
  TscanPtr.p->scanLastQueuedOp = operationRecPtr.i;
  if (prsOperationRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(prsOperationRecPtr, coprecsize, operationrec);
    prsOperationRecPtr.p->nextOp = operationRecPtr.i;
  } else {
    jam();
    TscanPtr.p->scanFirstQueuedOp = operationRecPtr.i;
  }//if
}//Dbacc::putReadyScanQueue()

/* --------------------------------------------------------------------------------- */
/* RELEASE_SCAN_BUCKET                                                               */
// Input:
//   rsbPageidptr.i     Index to page where buckets starts
//   rsbPageidptr.p     Pointer to page where bucket starts
//   trsbPageindex      Page index of starting container in bucket
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseScanBucket(Signal* signal) 
{
  Uint32 trsbIsforward;

  trsbIsforward = ZTRUE;
 NEXTRELEASESCANLOOP:
  ciPageidptr.i = rsbPageidptr.i;
  ciPageidptr.p = rsbPageidptr.p;
  tciPageindex = trsbPageindex;
  tciIsforward = trsbIsforward;
  containerinfo(signal);
  rscPageidptr.i = rsbPageidptr.i;
  rscPageidptr.p = rsbPageidptr.p;
  trscContainerlen = tciContainerlen;
  trscContainerptr = tciContainerptr;
  trscIsforward = trsbIsforward;
  releaseScanContainer(signal);
  if (((tciContainerhead >> 7) & 0x3) != 0) {
    jam();
    nciPageidptr.i = rsbPageidptr.i;
    nciPageidptr.p = rsbPageidptr.p;
    tnciContainerhead = tciContainerhead;
    tnciContainerptr = tciContainerptr;
    nextcontainerinfo(signal);
    rsbPageidptr.i = nciPageidptr.i;
    rsbPageidptr.p = nciPageidptr.p;
    trsbPageindex = tnciPageindex;
    trsbIsforward = tnciIsforward;
    goto NEXTRELEASESCANLOOP;
  }//if
}//Dbacc::releaseScanBucket()

/* --------------------------------------------------------------------------------- */
/*  RELEASE_SCAN_CONTAINER                                                           */
/*       INPUT:           TRSC_CONTAINERLEN                                          */
/*                        RSC_PAGEIDPTR                                              */
/*                        TRSC_CONTAINERPTR                                          */
/*                        TRSC_ISFORWARD                                             */
/*                        SCAN_PTR                                                   */
/*                                                                                   */
/*            DESCRIPTION: SEARCHS IN A CONTAINER, AND THE SCAN BIT OF THE ELEMENTS  */
/*                            OF THE CONTAINER IS RESET                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseScanContainer(Signal* signal) 
{
  OperationrecPtr rscOperPtr;
  Uint32 trscElemStep;
  Uint32 trscElementptr;
  Uint32 trscElemlens;
  Uint32 trscElemlen;

  if (trscContainerlen < 5) {
    if (trscContainerlen != ZCON_HEAD_SIZE) {
      jam();
      sendSystemerror(signal);
    }//if
    return;	/* 3 IS THE MINIMUM SIZE OF THE ELEMENT */
  }//if
  trscElemlens = trscContainerlen - 2;
  if (fragrecptr.p->keyLength != 0) {
    jam();
    trscElemlen = (1 + fragrecptr.p->keyLength) + fragrecptr.p->localkeylen;	/* LENGTH OF THE ELEMENT */
  } else {
    jam();
    trscElemlen = (1 + ZACTIVE_LONG_KEY_LEN) + fragrecptr.p->localkeylen;	/* LENGTH OF THE ELEMENT */
  }//if
  if (trscIsforward == 1) {
    jam();
    trscElementptr = trscContainerptr + ZCON_HEAD_SIZE;
    trscElemStep = trscElemlen;
  } else {
    jam();
    trscElementptr = trscContainerptr - 1;
    trscElemStep = 0 - trscElemlen;
  }//if
  do {
    arrGuard(trscElementptr, 2048);
    const Uint32 eh = rscPageidptr.p->word32[trscElementptr];
    const Uint32 scanMask = scanPtr.p->scanMask;
    if (ElementHeader::getUnlocked(eh)) {
      jam();
      const Uint32 tmp = ElementHeader::clearScanBit(eh, scanMask);
      dbgWord32(rscPageidptr, trscElementptr, tmp);
      rscPageidptr.p->word32[trscElementptr] = tmp;
    } else {
      jam();
      rscOperPtr.i = ElementHeader::getOpPtrI(eh);
      ptrCheckGuard(rscOperPtr, coprecsize, operationrec);
      rscOperPtr.p->scanBits &= ~scanMask;
    }//if
    trscElemlens = trscElemlens - trscElemlen;
    trscElementptr = trscElementptr + trscElemStep;
  } while (trscElemlens > 2);
  if (trscElemlens != 0) {
    jam();
    sendSystemerror(signal);
  }//if
}//Dbacc::releaseScanContainer()

/* --------------------------------------------------------------------------------- */
/* RELEASE_SCAN_REC                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseScanRec(Signal* signal) 
{  
  // Check that all ops this scan has allocated have been 
  // released
  ndbrequire(scanPtr.p->scanOpsAllocated==0);

  // Check that all locks this scan might have aquired 
  // have been properly released
  ndbrequire(scanPtr.p->scanLockHeld == 0);
  ndbrequire(scanPtr.p->scanFirstLockedOp == RNIL);
  ndbrequire(scanPtr.p->scanLastLockedOp == RNIL);

  // Check that all active operations have been 
  // properly released
  ndbrequire(scanPtr.p->scanFirstActiveOp == RNIL);

  // Check that all queued operations have been 
  // properly released
  ndbrequire(scanPtr.p->scanFirstQueuedOp == RNIL);
  ndbrequire(scanPtr.p->scanLastQueuedOp == RNIL);

  // Put scan record in free list
  scanPtr.p->scanNextfreerec = cfirstFreeScanRec;
  scanPtr.p->scanState = ScanRec::SCAN_DISCONNECT;
  cfirstFreeScanRec = scanPtr.i;

}//Dbacc::releaseScanRec()

/* --------------------------------------------------------------------------------- */
/*  SEARCH_SCAN_CONTAINER                                                            */
/*       INPUT:           TSSC_CONTAINERLEN                                          */
/*                        TSSC_CONTAINERPTR                                          */
/*                        TSSC_ISFORWARD                                             */
/*                        SSC_PAGEIDPTR                                              */
/*                        SCAN_PTR                                                   */
/*       OUTPUT:          TSSC_IS_LOCKED                                             */
/*                                                                                   */
/*            DESCRIPTION: SEARCH IN A CONTAINER TO FIND THE NEXT SCAN ELEMENT.      */
/*                    TO DO THIS THE SCAN BIT OF THE ELEMENT HEADER IS CHECKED. IF   */
/*                    THIS BIT IS ZERO, IT IS SET TO ONE AND THE ELEMENT IS RETURNED.*/
/* --------------------------------------------------------------------------------- */
bool Dbacc::searchScanContainer(Signal* signal) 
{
  OperationrecPtr sscOperPtr;
  Uint32 tsscScanBits;
  Uint32 tsscElemlens;
  Uint32 tsscElemlen;
  Uint32 tsscElemStep;

  if (tsscContainerlen < 5) {
    jam();
    return false;	/* 3 IS THE MINIMUM SIZE OF THE ELEMENT */
  }//if
  tsscElemlens = tsscContainerlen - ZCON_HEAD_SIZE;
  if (fragrecptr.p->keyLength == 0) {
    jam();
    tsscElemlen = (ZELEM_HEAD_SIZE + ZACTIVE_LONG_KEY_LEN) + fragrecptr.p->localkeylen;
  } else {
    jam();
    /* LENGTH OF THE ELEMENT */
    tsscElemlen = (ZELEM_HEAD_SIZE + fragrecptr.p->keyLength) + fragrecptr.p->localkeylen;
  }//if
  /* LENGTH OF THE ELEMENT */
  if (tsscIsforward == 1) {
    jam();
    tsscElementptr = tsscContainerptr + ZCON_HEAD_SIZE;
    tsscElemStep = tsscElemlen;
  } else {
    jam();
    tsscElementptr = tsscContainerptr - 1;
    tsscElemStep = 0 - tsscElemlen;
  }//if
 SCANELEMENTLOOP001:
  arrGuard(tsscElementptr, 2048);
  const Uint32 eh = sscPageidptr.p->word32[tsscElementptr];
  tsscIsLocked = ElementHeader::getLocked(eh);
  if (!tsscIsLocked){
    jam();
    tsscScanBits = ElementHeader::getScanBits(eh);
    if ((scanPtr.p->scanMask & tsscScanBits) == 0) {
      jam();
      const Uint32 tmp = ElementHeader::setScanBit(eh, scanPtr.p->scanMask);
      dbgWord32(sscPageidptr, tsscElementptr, tmp);
      sscPageidptr.p->word32[tsscElementptr] = tmp;
      return true;
    }//if
  } else {
    jam();
    sscOperPtr.i = ElementHeader::getOpPtrI(eh);
    ptrCheckGuard(sscOperPtr, coprecsize, operationrec);
    if ((sscOperPtr.p->scanBits & scanPtr.p->scanMask) == 0) {
      jam();
      sscOperPtr.p->scanBits |= scanPtr.p->scanMask;
      return true;
    }//if
  }//if
  /* THE ELEMENT IS ALREADY SENT. */
  /* SEARCH FOR NEXT ONE */
  tsscElemlens = tsscElemlens - tsscElemlen;
  if (tsscElemlens > 2) {
    jam();
    tsscElementptr = tsscElementptr + tsscElemStep;
    goto SCANELEMENTLOOP001;
  }//if
  return false;
}//Dbacc::searchScanContainer()

/* --------------------------------------------------------------------------------- */
/*  SEND THE RESPONSE NEXT_SCANCONF AND POSSIBLE KEYINFO SIGNALS AS WELL.            */
/* --------------------------------------------------------------------------------- */
void Dbacc::sendNextScanConf(Signal* signal) 
{
  scanPtr.p->scanTimer = scanPtr.p->scanContinuebCounter;
  Uint32 blockNo = refToBlock(scanPtr.p->scanUserblockref);
  if (!scanPtr.p->scanKeyinfoFlag){
    jam();
    /** ---------------------------------------------------------------------
     * LQH WILL NOT HAVE ANY USE OF THE TUPLE KEY LENGTH IN THIS CASE AND 
     * SO WE DO NOT PROVIDE IT. IN THIS CASE THESE VALUES ARE UNDEFINED. 
     * ---------------------------------------------------------------------- */
    signal->theData[0] = scanPtr.p->scanUserptr;
    signal->theData[1] = operationRecPtr.i;
    signal->theData[2] = operationRecPtr.p->fid;
    signal->theData[3] = operationRecPtr.p->localdata[0];
    signal->theData[4] = operationRecPtr.p->localdata[1];
    signal->theData[5] = fragrecptr.p->localkeylen;
    EXECUTE_DIRECT(blockNo, GSN_NEXT_SCANCONF, signal, 6);
    return;
  }//if
  
  fragrecptr.i = operationRecPtr.p->fragptr;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  if (fragrecptr.p->keyLength != 0) {
    jam();
    signal->theData[0] = scanPtr.p->scanUserptr;
    signal->theData[1] = operationRecPtr.i;
    signal->theData[2] = operationRecPtr.p->fid;
    signal->theData[3] = operationRecPtr.p->localdata[0];
    signal->theData[4] = operationRecPtr.p->localdata[1];
    signal->theData[5] = fragrecptr.p->localkeylen;
    signal->theData[6] = fragrecptr.p->keyLength;
    signal->theData[7] = operationRecPtr.p->keydata[0];
    signal->theData[8] = operationRecPtr.p->keydata[1];
    signal->theData[9] = operationRecPtr.p->keydata[2];
    signal->theData[10] = operationRecPtr.p->keydata[3];
    EXECUTE_DIRECT(blockNo, GSN_NEXT_SCANCONF, signal, 11);
    if (fragrecptr.p->keyLength > ZKEYINKEYREQ) {
      jam();
      /* = 4 */
      signal->theData[0] = scanPtr.p->scanUserptr;
      signal->theData[1] = operationRecPtr.i;
      signal->theData[2] = operationRecPtr.p->fid;
      signal->theData[3] = fragrecptr.p->keyLength - ZKEYINKEYREQ;
      signal->theData[4] = operationRecPtr.p->keydata[4];
      signal->theData[5] = operationRecPtr.p->keydata[5];
      signal->theData[6] = operationRecPtr.p->keydata[6];
      signal->theData[7] = operationRecPtr.p->keydata[7];
      EXECUTE_DIRECT(blockNo, GSN_ACC_SCAN_INFO, signal, 8);
      return;
    }//if
  } else {
    jam();
    sendScaninfo(signal);
    return;
  }//if
}//Dbacc::sendNextScanConf()

/* --------------------------------------------------------------------------------- */
/* SEND_SCANINFO                                                                     */
/*          DESCRIPTION: SCAN AN ELEMENT OF A LONG_KEY_PAGE.                         */
/* --------------------------------------------------------------------------------- */
void Dbacc::sendScaninfo(Signal* signal) 
{
  DirRangePtr ssiOverflowrangeptr;
  DirectoryarrayPtr ssiOverflowDirptr;
  Page8Ptr ssiPageptr;
  Uint32 tssiPageIndex;
  Uint32 tssiPagedir;
  Uint32 tssiKeyLen;
  Uint32 tssiStartIndex;
  Uint32 tssiIndexValue;
  Uint32 tssiTmp;

  Uint32 blockNo = refToBlock(scanPtr.p->scanUserblockref);

  tssiPageIndex = operationRecPtr.p->keydata[0] & 0x3ff;
  tssiPagedir = operationRecPtr.p->keydata[0] >> 10;
  ssiOverflowrangeptr.i = fragrecptr.p->overflowdir;
  ptrCheckGuard(ssiOverflowrangeptr, cdirrangesize, dirRange);
  arrGuard((tssiPagedir >> 8), 256);
  ssiOverflowDirptr.i = ssiOverflowrangeptr.p->dirArray[tssiPagedir >> 8];
  ptrCheckGuard(ssiOverflowDirptr, cdirarraysize, directoryarray);
  ssiPageptr.i = ssiOverflowDirptr.p->pagep[tssiPagedir & 0xff];
  ptrCheckGuard(ssiPageptr, cpagesize, page8);
  arrGuard(ZWORDS_IN_PAGE - tssiPageIndex, 2048);
  tssiIndexValue = ssiPageptr.p->word32[ZWORDS_IN_PAGE - tssiPageIndex];
  tssiStartIndex = tssiIndexValue & 0xffff;
  tssiKeyLen = tssiIndexValue >> 16;
  signal->theData[0] = scanPtr.p->scanUserptr;
  signal->theData[1] = operationRecPtr.i;
  signal->theData[2] = operationRecPtr.p->fid;
  signal->theData[3] = operationRecPtr.p->localdata[0];
  signal->theData[4] = operationRecPtr.p->localdata[1];
  signal->theData[5] = fragrecptr.p->localkeylen;
  signal->theData[6] = tssiKeyLen;
  arrGuard(tssiStartIndex + 3, 2048);
  signal->theData[7] = ssiPageptr.p->word32[tssiStartIndex];
  signal->theData[8] = ssiPageptr.p->word32[tssiStartIndex + 1];
  signal->theData[9] = ssiPageptr.p->word32[tssiStartIndex + 2];
  signal->theData[10] = ssiPageptr.p->word32[tssiStartIndex + 3];
  EXECUTE_DIRECT(blockNo, GSN_NEXT_SCANCONF, signal, 11);
  if (tssiKeyLen > 4) {
    tssiKeyLen = tssiKeyLen - 4;
    tssiStartIndex = tssiStartIndex + 4;
  SSI_LOOP_10:
    jamEntry();
    if (tssiKeyLen > ZMAXSCANSIGNALLEN) {
      jam();
      signal->theData[0] = scanPtr.p->scanUserptr;
      signal->theData[1] = operationRecPtr.i;
      signal->theData[2] = operationRecPtr.p->fid;
      signal->theData[3] = ZMAXSCANSIGNALLEN;
      arrGuard(tssiStartIndex + 19, 2048);
      signal->theData[4] = ssiPageptr.p->word32[tssiStartIndex];
      signal->theData[5] = ssiPageptr.p->word32[tssiStartIndex + 1];
      signal->theData[6] = ssiPageptr.p->word32[tssiStartIndex + 2];
      signal->theData[7] = ssiPageptr.p->word32[tssiStartIndex + 3];
      signal->theData[8] = ssiPageptr.p->word32[tssiStartIndex + 4];
      signal->theData[9] = ssiPageptr.p->word32[tssiStartIndex + 5];
      signal->theData[10] = ssiPageptr.p->word32[tssiStartIndex + 6];
      signal->theData[11] = ssiPageptr.p->word32[tssiStartIndex + 7];
      signal->theData[12] = ssiPageptr.p->word32[tssiStartIndex + 8];
      signal->theData[13] = ssiPageptr.p->word32[tssiStartIndex + 9];
      signal->theData[14] = ssiPageptr.p->word32[tssiStartIndex + 10];
      signal->theData[15] = ssiPageptr.p->word32[tssiStartIndex + 11];
      signal->theData[16] = ssiPageptr.p->word32[tssiStartIndex + 12];
      signal->theData[17] = ssiPageptr.p->word32[tssiStartIndex + 13];
      signal->theData[18] = ssiPageptr.p->word32[tssiStartIndex + 14];
      signal->theData[19] = ssiPageptr.p->word32[tssiStartIndex + 15];
      signal->theData[20] = ssiPageptr.p->word32[tssiStartIndex + 16];
      signal->theData[21] = ssiPageptr.p->word32[tssiStartIndex + 17];
      signal->theData[22] = ssiPageptr.p->word32[tssiStartIndex + 18];
      signal->theData[23] = ssiPageptr.p->word32[tssiStartIndex + 19];
      EXECUTE_DIRECT(blockNo, GSN_ACC_SCAN_INFO24, signal, 24);
      tssiStartIndex = tssiStartIndex + ZMAXSCANSIGNALLEN;
      tssiKeyLen = tssiKeyLen - ZMAXSCANSIGNALLEN;
      goto SSI_LOOP_10;
    } else {
      jam();
      ndbrequire((tssiStartIndex + tssiKeyLen) <= 2048);
      for (tssiTmp = 0; tssiTmp < tssiKeyLen; tssiTmp++) {
        ckeys[tssiTmp] = ssiPageptr.p->word32[tssiStartIndex + tssiTmp];
      }//for
      signal->theData[0] = scanPtr.p->scanUserptr;
      signal->theData[1] = operationRecPtr.i;
      signal->theData[2] = operationRecPtr.p->fid;
      /* LOCAL FRAGMENT IDENTITY */
      signal->theData[3] = tssiKeyLen;
      signal->theData[4] = ckeys[0];
      signal->theData[5] = ckeys[1];
      signal->theData[6] = ckeys[2];
      signal->theData[7] = ckeys[3];
      signal->theData[8] = ckeys[4];
      signal->theData[9] = ckeys[5];
      signal->theData[10] = ckeys[6];
      signal->theData[11] = ckeys[7];
      signal->theData[12] = ckeys[8];
      signal->theData[13] = ckeys[9];
      signal->theData[14] = ckeys[10];
      signal->theData[15] = ckeys[11];
      signal->theData[16] = ckeys[12];
      signal->theData[17] = ckeys[13];
      signal->theData[18] = ckeys[14];
      signal->theData[19] = ckeys[15];
      signal->theData[20] = ckeys[16];
      signal->theData[21] = ckeys[17];
      signal->theData[22] = ckeys[18];
      signal->theData[23] = ckeys[19];
      EXECUTE_DIRECT(blockNo, GSN_ACC_SCAN_INFO24, signal, 24);
    }//if
  }//if
}//Dbacc::sendScaninfo()

/*---------------------------------------------------------------------------
 * sendScanHbRep     	      	             	      	             	       
 * Description: Using Dispatcher::execute() to send a heartbeat to DBTC
 *     	from DBLQH telling the scan is alive. We use the sendScanHbRep()
 *     	in DBLQH, this needs to be done here in DBACC since it can take
 *	a while before LQH receives an answer the normal way from ACC. 
 *--------------------------------------------------------------------------*/
void Dbacc::sendScanHbRep(Signal* signal, Uint32 scanPtrIndex)
{
  scanPtr.i = scanPtrIndex;
  ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
 
  // If the timer status is on we continue with a new heartbeat in one second,
  // else the loop stops and we will not send a new CONTINUEB
  if (scanPtr.p->scanTimer != 0){
    if (scanPtr.p->scanTimer == scanPtr.p->scanContinuebCounter){
      jam();
      ndbrequire(scanPtr.p->scanState != ScanRec::SCAN_DISCONNECT);

      signal->theData[0] = scanPtr.p->scanUserptr;
      signal->theData[1] = scanPtr.p->scanTrid1;
      signal->theData[2] = scanPtr.p->scanTrid2;
      EXECUTE_DIRECT(DBLQH, GSN_SCAN_HBREP, signal, 3);
      jamEntry();
    }//if
    scanPtr.p->scanContinuebCounter++;
    signal->theData[0] = ZSEND_SCAN_HBREP;
    signal->theData[1] = scanPtr.i;
    sendSignalWithDelay(cownBlockref, GSN_CONTINUEB, signal, 100, 2);
  } else {
    jam();
    scanPtr.p->scanContinuebCounter = 0;
  }//if
}//Dbacc::sendScanHbRep()			

/* --------------------------------------------------------------------------------- */
/* SETLOCK                                                                           */
/*          DESCRIPTION:SETS LOCK ON AN ELEMENT. INFORMATION ABOUT THE ELEMENT IS    */
/*                      SAVED IN THE ELEMENT HEAD.A COPY OF THIS INFORMATION WILL    */
/*                       BE PUT IN THE OPERATION RECORD. A FIELD IN THE  HEADER OF   */
/*                       THE ELEMENT POINTS TO THE OPERATION RECORD.                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::setlock(Signal* signal) 
{
  Uint32 tselTmp1;

  arrGuard(tslElementptr, 2048);
  tselTmp1 = slPageidptr.p->word32[tslElementptr];
  operationRecPtr.p->scanBits = ElementHeader::getScanBits(tselTmp1);
  operationRecPtr.p->hashvaluePart = ElementHeader::getHashValuePart(tselTmp1);

  tselTmp1 = ElementHeader::setLocked(operationRecPtr.i);
  dbgWord32(slPageidptr, tslElementptr, tselTmp1);
  slPageidptr.p->word32[tslElementptr] = tselTmp1;
}//Dbacc::setlock()

/* --------------------------------------------------------------------------------- */
/*  TAKE_OUT_ACTIVE_SCAN_OP                                                          */
/*         DESCRIPTION: AN ACTIVE SCAN OPERATION IS BELOGED TO AN ACTIVE LIST OF THE */
/*                      SCAN RECORD. BY THIS SUBRUTIN THE LIST IS UPDATED.           */
/* --------------------------------------------------------------------------------- */
void Dbacc::takeOutActiveScanOp(Signal* signal) 
{
  OperationrecPtr tasOperationRecPtr;

  if (operationRecPtr.p->prevOp != RNIL) {
    jam();
    tasOperationRecPtr.i = operationRecPtr.p->prevOp;
    ptrCheckGuard(tasOperationRecPtr, coprecsize, operationrec);
    tasOperationRecPtr.p->nextOp = operationRecPtr.p->nextOp;
  } else {
    jam();
    scanPtr.p->scanFirstActiveOp = operationRecPtr.p->nextOp;
  }//if
  if (operationRecPtr.p->nextOp != RNIL) {
    jam();
    tasOperationRecPtr.i = operationRecPtr.p->nextOp;
    ptrCheckGuard(tasOperationRecPtr, coprecsize, operationrec);
    tasOperationRecPtr.p->prevOp = operationRecPtr.p->prevOp;
  }//if
}//Dbacc::takeOutActiveScanOp()

/**
 * takeOutScanLockQueue
 *
 * Description: Take out an operation from the doubly linked 
 * lock list on a scan record.
 *
 * @note Use putOpScanLockQue to insert a operation in 
 *       the list
 *
 */
void Dbacc::takeOutScanLockQueue(Uint32 scanRecIndex) 
{
  OperationrecPtr tslOperationRecPtr;
  ScanRecPtr TscanPtr;

  TscanPtr.i = scanRecIndex;
  ptrCheckGuard(TscanPtr, cscanRecSize, scanRec);

  if (operationRecPtr.p->prevOp != RNIL) {
    jam();
    tslOperationRecPtr.i = operationRecPtr.p->prevOp;
    ptrCheckGuard(tslOperationRecPtr, coprecsize, operationrec);
    tslOperationRecPtr.p->nextOp = operationRecPtr.p->nextOp;
  } else {
    jam();
    // Check that first are pointing at operation to take out
    ndbrequire(TscanPtr.p->scanFirstLockedOp==operationRecPtr.i);
    TscanPtr.p->scanFirstLockedOp = operationRecPtr.p->nextOp;
  }//if
  if (operationRecPtr.p->nextOp != RNIL) {
    jam();
    tslOperationRecPtr.i = operationRecPtr.p->nextOp;
    ptrCheckGuard(tslOperationRecPtr, coprecsize, operationrec);
    tslOperationRecPtr.p->prevOp = operationRecPtr.p->prevOp;
  } else {
    jam();
    // Check that last are pointing at operation to take out
    ndbrequire(TscanPtr.p->scanLastLockedOp==operationRecPtr.i);
    TscanPtr.p->scanLastLockedOp = operationRecPtr.p->prevOp;
  }//if
  TscanPtr.p->scanLockHeld--;

#ifdef VM_TRACE
  // DEBUG CODE
  // Check that there are as many operations in the lockqueue as 
  // scanLockHeld indicates
  OperationrecPtr tmpOp;
  int numLockedOps = 0;
  tmpOp.i = TscanPtr.p->scanFirstLockedOp;
  while(tmpOp.i != RNIL){
    numLockedOps++;
    ptrCheckGuard(tmpOp, coprecsize, operationrec);
    if (tmpOp.p->nextOp == RNIL)
      ndbrequire(tmpOp.i == TscanPtr.p->scanLastLockedOp);
    tmpOp.i = tmpOp.p->nextOp;
  } 
  ndbrequire(numLockedOps==TscanPtr.p->scanLockHeld);
#endif
}//Dbacc::takeOutScanLockQueue()

/* --------------------------------------------------------------------------------- */
/* TAKE_OUT_READY_SCAN_QUEUE                                                         */
/* --------------------------------------------------------------------------------- */
void Dbacc::takeOutReadyScanQueue(Signal* signal) 
{
  OperationrecPtr trsOperationRecPtr;

  if (operationRecPtr.p->prevOp != RNIL) {
    jam();
    trsOperationRecPtr.i = operationRecPtr.p->prevOp;
    ptrCheckGuard(trsOperationRecPtr, coprecsize, operationrec);
    trsOperationRecPtr.p->nextOp = operationRecPtr.p->nextOp;
  } else {
    jam();
    scanPtr.p->scanFirstQueuedOp = operationRecPtr.p->nextOp;
  }//if
  if (operationRecPtr.p->nextOp != RNIL) {
    jam();
    trsOperationRecPtr.i = operationRecPtr.p->nextOp;
    ptrCheckGuard(trsOperationRecPtr, coprecsize, operationrec);
    trsOperationRecPtr.p->prevOp = operationRecPtr.p->prevOp;
  } else {
    jam();
    scanPtr.p->scanLastQueuedOp = operationRecPtr.p->nextOp;
  }//if
}//Dbacc::takeOutReadyScanQueue()

/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */
/*                                                                                   */
/*       END OF SCAN MODULE                                                          */
/*                                                                                   */
/* --------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------- */

bool Dbacc::getrootfragmentrec(Signal* signal, RootfragmentrecPtr& rootPtr, Uint32 fid) 
{
  for (Uint32 i = 0; i < NO_OF_FRAG_PER_NODE; i++) {
    jam();
    if (tabptr.p->fragholder[i] == fid) {
      jam();
      rootPtr.i = tabptr.p->fragptrholder[i];
      ptrCheckGuard(rootPtr, crootfragmentsize, rootfragmentrec);
      return true;
    }//if
  }//for
  return false;
}//Dbacc::getrootfragmentrec()

/* --------------------------------------------------------------------------------- */
/* INIT_FS_OP_REC                                                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::initFsOpRec(Signal* signal) 
{
  fsOpptr.p->fsOpfragrecPtr = fragrecptr.i;
  fsOpptr.p->fsConptr = fsConnectptr.i;
}//Dbacc::initFsOpRec()

/* --------------------------------------------------------------------------------- */
/* INIT_LCP_CONN_REC                                                                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::initLcpConnRec(Signal* signal) 
{
  lcpConnectptr.p->lcpUserblockref = tuserblockref;
  lcpConnectptr.p->lcpUserptr = tuserptr;
  lcpConnectptr.p->noOfLcpConf = 0;	/* NO OF RETUREND CONF SIGNALS */
  lcpConnectptr.p->syncUndopageState = WAIT_NOTHING;
}//Dbacc::initLcpConnRec()

/* --------------------------------------------------------------------------------- */
/* INIT_OVERPAGE                                                                     */
/*         INPUT. IOP_PAGEPTR, POINTER TO AN OVERFLOW PAGE RECORD                    */
/*         DESCRIPTION: CONTAINERS AND FREE LISTS OF THE PAGE, GET INITIALE VALUE    */
/*         ACCORDING TO LH3 AND PAGE STRUCTOR DESCRIPTION OF NDBACC BLOCK            */
/* --------------------------------------------------------------------------------- */
void Dbacc::initOverpage(Signal* signal) 
{
  Uint32 tiopTmp;
  Uint32 tiopPrevFree;
  Uint32 tiopNextFree;

  for (tiopIndex = 0; tiopIndex <= 2047; tiopIndex++) {
    iopPageptr.p->word32[tiopIndex] = 0;
  }//for
  iopPageptr.p->word32[ZPOS_OVERFLOWREC] = iopOverflowRecPtr.i;
  iopPageptr.p->word32[ZPOS_CHECKSUM] = 0;
  iopPageptr.p->word32[ZPOS_PAGE_ID] = tiopPageId;
  iopPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] = 0;
  tiopTmp = ZEMPTYLIST;
  tiopTmp = (tiopTmp << 16) + (tiopTmp << 23);
  iopPageptr.p->word32[ZPOS_EMPTY_LIST] = tiopTmp + (1 << ZPOS_PAGE_TYPE_BIT);
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE PREVIOUS PART OF DOUBLY LINKED LIST FOR LEFT CONTAINERS.         */
  /* --------------------------------------------------------------------------------- */
  tiopIndex = ZHEAD_SIZE + 1;
  iopPageptr.p->word32[tiopIndex] = ZEMPTYLIST;
  for (tiopPrevFree = 0; tiopPrevFree <= ZEMPTYLIST - 2; tiopPrevFree++) {
    tiopIndex = tiopIndex + ZBUF_SIZE;
    iopPageptr.p->word32[tiopIndex] = tiopPrevFree;
  }//for
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE NEXT PART OF DOUBLY LINKED LIST FOR LEFT CONTAINERS.             */
  /* --------------------------------------------------------------------------------- */
  tiopIndex = ZHEAD_SIZE;
  for (tiopNextFree = 1; tiopNextFree <= ZEMPTYLIST - 1; tiopNextFree++) {
    iopPageptr.p->word32[tiopIndex] = tiopNextFree;
    tiopIndex = tiopIndex + ZBUF_SIZE;
  }//for
  iopPageptr.p->word32[tiopIndex] = ZEMPTYLIST;	/* LEFT_LIST IS UPDATED */
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE PREVIOUS PART OF DOUBLY LINKED LIST FOR RIGHT CONTAINERS.        */
  /* --------------------------------------------------------------------------------- */
  tiopIndex = (ZBUF_SIZE + ZHEAD_SIZE) - 1;
  iopPageptr.p->word32[tiopIndex] = ZEMPTYLIST;
  for (tiopPrevFree = 0; tiopPrevFree <= ZEMPTYLIST - 2; tiopPrevFree++) {
    tiopIndex = tiopIndex + ZBUF_SIZE;
    iopPageptr.p->word32[tiopIndex] = tiopPrevFree;
  }//for
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE NEXT PART OF DOUBLY LINKED LIST FOR RIGHT CONTAINERS.            */
  /* --------------------------------------------------------------------------------- */
  tiopIndex = (ZBUF_SIZE + ZHEAD_SIZE) - 2;
  for (tiopNextFree = 1; tiopNextFree <= ZEMPTYLIST - 1; tiopNextFree++) {
    iopPageptr.p->word32[tiopIndex] = tiopNextFree;
    tiopIndex = tiopIndex + ZBUF_SIZE;
  }//for
  iopPageptr.p->word32[tiopIndex] = ZEMPTYLIST;	/* RIGHT_LIST IS UPDATED */
}//Dbacc::initOverpage()

/* --------------------------------------------------------------------------------- */
/* INIT_PAGE                                                                         */
/*         INPUT. INP_PAGEPTR, POINTER TO A PAGE RECORD                              */
/*         DESCRIPTION: CONTAINERS AND FREE LISTS OF THE PAGE, GET INITIALE VALUE    */
/*         ACCORDING TO LH3 AND PAGE STRUCTOR DISACRIPTION OF NDBACC BLOCK           */
/* --------------------------------------------------------------------------------- */
void Dbacc::initPage(Signal* signal) 
{
  Uint32 tinpTmp1;
  Uint32 tinpIndex;
  Uint32 tinpTmp;
  Uint32 tinpPrevFree;
  Uint32 tinpNextFree;

  for (tiopIndex = 0; tiopIndex <= 2047; tiopIndex++) {
    inpPageptr.p->word32[tiopIndex] = 0;
  }//for
  /* --------------------------------------------------------------------------------- */
  /*       SET PAGE ID FOR USE OF CHECKPOINTER.                                        */
  /*       PREPARE CONTAINER HEADERS INDICATING EMPTY CONTAINERS WITHOUT NEXT.         */
  /* --------------------------------------------------------------------------------- */
  inpPageptr.p->word32[ZPOS_PAGE_ID] = tipPageId;
  tinpTmp1 = ZCON_HEAD_SIZE;
  tinpTmp1 = tinpTmp1 << 26;
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE ZNO_CONTAINERS PREDEFINED HEADERS ON LEFT SIZE.                  */
  /* --------------------------------------------------------------------------------- */
  tinpIndex = ZHEAD_SIZE;
  for (tinpTmp = 0; tinpTmp <= ZNO_CONTAINERS - 1; tinpTmp++) {
    inpPageptr.p->word32[tinpIndex] = tinpTmp1;
    tinpIndex = tinpIndex + ZBUF_SIZE;
  }//for
  /* WORD32(ZPOS_EMPTY_LIST) DATA STRUCTURE:*/
  /*--------------------------------------- */
  /*| PAGE TYPE|LEFT FREE|RIGHT FREE        */
  /*|     1    |  LIST   |  LIST            */
  /*|    BIT   | 7 BITS  | 7 BITS           */
  /*--------------------------------------- */
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE FIRST POINTER TO DOUBLY LINKED LIST OF FREE CONTAINERS.          */
  /*       INITIALISE EMPTY LISTS OF USED CONTAINERS.                                  */
  /*       INITIALISE LEFT FREE LIST TO 64 AND RIGHT FREE LIST TO ZERO.                */
  /*       ALSO INITIALISE PAGE TYPE TO NOT OVERFLOW PAGE.                             */
  /* --------------------------------------------------------------------------------- */
  tinpTmp = ZEMPTYLIST;
  tinpTmp = (tinpTmp << 16) + (tinpTmp << 23);
  tinpTmp = tinpTmp + (ZNO_CONTAINERS << 7);
  inpPageptr.p->word32[ZPOS_EMPTY_LIST] = tinpTmp;
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE PREVIOUS PART OF DOUBLY LINKED LIST FOR RIGHT CONTAINERS.        */
  /* --------------------------------------------------------------------------------- */
  tinpIndex = (ZHEAD_SIZE + ZBUF_SIZE) - 1;
  inpPageptr.p->word32[tinpIndex] = ZEMPTYLIST;
  for (tinpPrevFree = 0; tinpPrevFree <= ZEMPTYLIST - 2; tinpPrevFree++) {
    tinpIndex = tinpIndex + ZBUF_SIZE;
    inpPageptr.p->word32[tinpIndex] = tinpPrevFree;
  }//for
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE NEXT PART OF DOUBLY LINKED LIST FOR RIGHT CONTAINERS.            */
  /* --------------------------------------------------------------------------------- */
  tinpIndex = (ZHEAD_SIZE + ZBUF_SIZE) - 2;
  for (tinpNextFree = 1; tinpNextFree <= ZEMPTYLIST - 1; tinpNextFree++) {
    inpPageptr.p->word32[tinpIndex] = tinpNextFree;
    tinpIndex = tinpIndex + ZBUF_SIZE;
  }//for
  inpPageptr.p->word32[tinpIndex] = ZEMPTYLIST;
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE PREVIOUS PART OF DOUBLY LINKED LIST FOR LEFT CONTAINERS.         */
  /*       THE FIRST ZNO_CONTAINERS ARE NOT PUT INTO FREE LIST SINCE THEY ARE          */
  /*       PREDEFINED AS OCCUPIED.                                                     */
  /* --------------------------------------------------------------------------------- */
  tinpIndex = (ZNO_CONTAINERS * ZBUF_SIZE) + ZHEAD_SIZE;
  for (tinpNextFree = ZNO_CONTAINERS + 1; tinpNextFree <= ZEMPTYLIST - 1; tinpNextFree++) {
    inpPageptr.p->word32[tinpIndex] = tinpNextFree;
    tinpIndex = tinpIndex + ZBUF_SIZE;
  }//for
  inpPageptr.p->word32[tinpIndex] = ZEMPTYLIST;
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE NEXT PART OF DOUBLY LINKED LIST FOR LEFT CONTAINERS.             */
  /*       THE FIRST ZNO_CONTAINERS ARE NOT PUT INTO FREE LIST SINCE THEY ARE          */
  /*       PREDEFINED AS OCCUPIED.                                                     */
  /* --------------------------------------------------------------------------------- */
  tinpIndex = ((ZNO_CONTAINERS * ZBUF_SIZE) + ZHEAD_SIZE) + 1;
  inpPageptr.p->word32[tinpIndex] = ZEMPTYLIST;
  for (tinpPrevFree = ZNO_CONTAINERS; tinpPrevFree <= ZEMPTYLIST - 2; tinpPrevFree++) {
    tinpIndex = tinpIndex + ZBUF_SIZE;
    inpPageptr.p->word32[tinpIndex] = tinpPrevFree;
  }//for
  /* --------------------------------------------------------------------------------- */
  /*       INITIALISE HEADER POSITIONS NOT CURRENTLY USED AND ENSURE USE OF OVERFLOW   */
  /*       RECORD POINTER ON THIS PAGE LEADS TO ERROR.                                 */
  /* --------------------------------------------------------------------------------- */
  inpPageptr.p->word32[ZPOS_CHECKSUM] = 0;
  inpPageptr.p->word32[ZPOS_ALLOC_CONTAINERS] = 0;
  inpPageptr.p->word32[ZPOS_OVERFLOWREC] = RNIL;
}//Dbacc::initPage()

/* --------------------------------------------------------------------------------- */
/* PUT_OP_IN_FRAG_WAIT_QUE                                                           */
/*         DESCRIPTION: AN OPERATION WHICH OWNS A LOCK OF AN ELEMENT, IS PUT IN A    */
/*                      LIST OF THE FRAGMENT. THIS LIST IS USED TO STOP THE QUEUE    */
/*                      OPERATION DURING CREATE CHECK POINT PROSESS FOR STOP AND     */
/*                      RESTART OF THE OPERATIONS.                                   */
/*                                                                                   */
/*       IF CONTINUEB SIGNALS ARE INTRODUCED AFTER STARTING TO EXECUTE ACCKEYREQ WE  */
/*       MUST PUT IT IN THIS LIST BEFORE EXITING TO ENSURE THAT WE ARE NOT BEING     */
/*       LOCKED AFTER THAT LQH HAS RECEIVED ALL LCP_HOLDOP'S. THEN THE LCP WILL NEVER*/
/*       PROCEED. WE ALSO PUT IT INTO THIS LIST WHEN WAITING FOR LONG KEYS. THIS IS  */
/*       ONLY NEEDED IF SIGNALS CAN ENTER BETWEEN THE KEYDATA CARRYING SIGNALS.      */
/* --------------------------------------------------------------------------------- */
void Dbacc::putOpInFragWaitQue(Signal* signal) 
{
  OperationrecPtr tpiwOperRecPtr;

  if (operationRecPtr.p->operation != ZSCAN_OP) {
    if (fragrecptr.p->firstWaitInQueOp == RNIL) {
      jam();
      fragrecptr.p->firstWaitInQueOp = operationRecPtr.i;
    } else {
      jam();
      tpiwOperRecPtr.i = fragrecptr.p->lastWaitInQueOp;
      ptrCheckGuard(tpiwOperRecPtr, coprecsize, operationrec);
      tpiwOperRecPtr.p->nextQueOp = operationRecPtr.i;
    }//if
    operationRecPtr.p->opState = WAIT_IN_QUEUE;
    operationRecPtr.p->nextQueOp = RNIL;
    operationRecPtr.p->prevQueOp = fragrecptr.p->lastWaitInQueOp;
    fragrecptr.p->lastWaitInQueOp = operationRecPtr.i;
  }//if
}//Dbacc::putOpInFragWaitQue()

/* --------------------------------------------------------------------------------- */
/* PUT_OVERFLOW_REC_IN_FRAG                                                          */
/*         DESCRIPTION: AN OVERFLOW RECORD WITCH IS USED TO KEEP INFORMATION ABOUT   */
/*                      OVERFLOW PAGE WILL BE PUT IN A LIST OF OVERFLOW RECORDS IN   */
/*                      THE FRAGMENT RECORD.                                         */
/* --------------------------------------------------------------------------------- */
void Dbacc::putOverflowRecInFrag(Signal* signal) 
{
  OverflowRecordPtr tpifNextOverrecPtr;
  OverflowRecordPtr tpifPrevOverrecPtr;

  tpifNextOverrecPtr.i = fragrecptr.p->firstOverflowRec;
  tpifPrevOverrecPtr.i = RNIL;
  while (tpifNextOverrecPtr.i != RNIL) {
    ptrCheckGuard(tpifNextOverrecPtr, coverflowrecsize, overflowRecord);
    if (tpifNextOverrecPtr.p->dirindex < porOverflowRecPtr.p->dirindex) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       PROCEED IN LIST TO THE NEXT IN THE LIST SINCE THE ENTRY HAD A LOWER PAGE ID.*/
      /*       WE WANT TO ENSURE THAT LOWER PAGE ID'S ARE KEPT FULL RATHER THAN THE        */
      /*       OPPOSITE TO ENSURE THAT HIGH PAGE ID'S CAN BE REMOVED WHEN SHRINKS ARE      */
      /*       PERFORMED.                                                                  */
      /* --------------------------------------------------------------------------------- */
      tpifPrevOverrecPtr = tpifNextOverrecPtr;
      tpifNextOverrecPtr.i = tpifNextOverrecPtr.p->nextOverRec;
    } else {
      jam();
      ndbrequire(tpifNextOverrecPtr.p->dirindex != porOverflowRecPtr.p->dirindex);
      /* --------------------------------------------------------------------------------- */
      /*       TRYING TO INSERT THE SAME PAGE TWICE. SYSTEM ERROR.                         */
      /* --------------------------------------------------------------------------------- */
      break;
    }//if
  }//while
  if (tpifNextOverrecPtr.i == RNIL) {
    jam();
    fragrecptr.p->lastOverflowRec = porOverflowRecPtr.i;
  } else {
    jam();
    tpifNextOverrecPtr.p->prevOverRec = porOverflowRecPtr.i;
  }//if
  if (tpifPrevOverrecPtr.i == RNIL) {
    jam();
    fragrecptr.p->firstOverflowRec = porOverflowRecPtr.i;
  } else {
    jam();
    tpifPrevOverrecPtr.p->nextOverRec = porOverflowRecPtr.i;
  }//if
  porOverflowRecPtr.p->prevOverRec = tpifPrevOverrecPtr.i;
  porOverflowRecPtr.p->nextOverRec = tpifNextOverrecPtr.i;
}//Dbacc::putOverflowRecInFrag()

/* --------------------------------------------------------------------------------- */
/* PUT_REC_IN_FREE_OVERDIR                                                           */
/* --------------------------------------------------------------------------------- */
void Dbacc::putRecInFreeOverdir(Signal* signal) 
{
  OverflowRecordPtr tpfoNextOverrecPtr;
  OverflowRecordPtr tpfoPrevOverrecPtr;

  tpfoNextOverrecPtr.i = fragrecptr.p->firstFreeDirindexRec;
  tpfoPrevOverrecPtr.i = RNIL;
  while (tpfoNextOverrecPtr.i != RNIL) {
    ptrCheckGuard(tpfoNextOverrecPtr, coverflowrecsize, overflowRecord);
    if (tpfoNextOverrecPtr.p->dirindex < priOverflowRecPtr.p->dirindex) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       PROCEED IN LIST TO THE NEXT IN THE LIST SINCE THE ENTRY HAD A LOWER PAGE ID.*/
      /*       WE WANT TO ENSURE THAT LOWER PAGE ID'S ARE KEPT FULL RATHER THAN THE        */
      /*       OPPOSITE TO ENSURE THAT HIGH PAGE ID'S CAN BE REMOVED WHEN SHRINKS ARE      */
      /*       PERFORMED.                                                                  */
      /* --------------------------------------------------------------------------------- */
      tpfoPrevOverrecPtr = tpfoNextOverrecPtr;
      tpfoNextOverrecPtr.i = tpfoNextOverrecPtr.p->nextOverList;
    } else {
      jam();
      ndbrequire(tpfoNextOverrecPtr.p->dirindex != priOverflowRecPtr.p->dirindex);
      /* --------------------------------------------------------------------------------- */
      /*       ENSURE WE ARE NOT TRYING TO INSERT THE SAME PAGE TWICE.                     */
      /* --------------------------------------------------------------------------------- */
      break;
    }//if
  }//while
  if (tpfoNextOverrecPtr.i != RNIL) {
    jam();
    tpfoNextOverrecPtr.p->prevOverList = priOverflowRecPtr.i;
  }//if
  if (tpfoPrevOverrecPtr.i == RNIL) {
    jam();
    fragrecptr.p->firstFreeDirindexRec = priOverflowRecPtr.i;
  } else {
    jam();
    tpfoPrevOverrecPtr.p->nextOverList = priOverflowRecPtr.i;
  }//if
  priOverflowRecPtr.p->prevOverList = tpfoPrevOverrecPtr.i;
  priOverflowRecPtr.p->nextOverList = tpfoNextOverrecPtr.i;
}//Dbacc::putRecInFreeOverdir()

/* --------------------------------------------------------------------------------- */
/* RELEASE_DIRECTORY                                                                 */
/* --------------------------------------- ----------------------------------------- */
void Dbacc::releaseDirectory(Signal* signal) 
{
  ptrCheckGuard(rdDirptr, cdirarraysize, directoryarray);
  rdDirptr.p->pagep[0] = cfirstfreedir;
  cfirstfreedir = rdDirptr.i;
}//Dbacc::releaseDirectory()

/* --------------------------------------------------------------------------------- */
/* RELEASE_DIRRANGE                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseDirrange(Signal* signal) 
{
  ptrCheckGuard(rdDirRangePtr, cdirrangesize, dirRange);
  rdDirRangePtr.p->dirArray[0] = cfirstfreeDirrange;
  cfirstfreeDirrange = rdDirRangePtr.i;
}//Dbacc::releaseDirrange()

/* --------------------------------------------------------------------------------- */
/* RELEASE_FS_CONN_REC                                                               */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseFsConnRec(Signal* signal) 
{
  fsConnectptr.p->fsNext = cfsFirstfreeconnect;
  cfsFirstfreeconnect = fsConnectptr.i;
  fsConnectptr.p->fsState = WAIT_NOTHING;
}//Dbacc::releaseFsConnRec()

/* --------------------------------------------------------------------------------- */
/* RELEASE_FS_OP_REC                                                                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseFsOpRec(Signal* signal) 
{
  fsOpptr.p->fsOpnext = cfsFirstfreeop;
  cfsFirstfreeop = fsOpptr.i;
  fsOpptr.p->fsOpstate = WAIT_NOTHING;
}//Dbacc::releaseFsOpRec()

/* --------------------------------------------------------------------------------- */
/* RELEASE_LCP_CONNECT_REC                                                           */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseLcpConnectRec(Signal* signal) 
{
  lcpConnectptr.p->lcpstate = LCP_FREE;
  lcpConnectptr.p->nextLcpConn = cfirstfreelcpConnect;
  lcpConnectptr.p->lcpstate = LCP_FREE;
  cfirstfreelcpConnect = lcpConnectptr.i;
}//Dbacc::releaseLcpConnectRec()

/* --------------------------------------------------------------------------------- */
/* RELEASE OP RECORD                                                                 */
/*         PUT A FREE OPERATION IN A FREE LIST OF THE OPERATIONS                     */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseOpRec(Signal* signal) 
{
#ifdef VM_TRACE
  // DEBUG CODE
  // Check that the operation to be released isn't 
  // already in the list of free operations
  // Since this code loops through the entire list of free operations
  // it's only enabled in VM_TRACE mode
  OperationrecPtr opRecPtr;
  bool opInList = false;
  opRecPtr.i = cfreeopRec;
  while (opRecPtr.i != RNIL){
    if (opRecPtr.i == operationRecPtr.i){
      opInList = true;
      break;
    }
    ptrCheckGuard(opRecPtr, coprecsize, operationrec);
    opRecPtr.i = opRecPtr.p->nextOp;
  }
  ndbrequire(opInList == false);
#endif
  ndbrequire(operationRecPtr.p->lockOwner == ZFALSE);

  operationRecPtr.p->nextOp = cfreeopRec;
  cfreeopRec = operationRecPtr.i;	/* UPDATE FREE LIST OF OP RECORDS */
  operationRecPtr.p->prevOp = RNIL;
  operationRecPtr.p->opState = FREE_OP;
  operationRecPtr.p->transactionstate = IDLE;
  operationRecPtr.p->operation = ZUNDEFINED_OP;
}//Dbacc::releaseOpRec()

/* --------------------------------------------------------------------------------- */
/* RELEASE_OVERFLOW_REC                                                              */
/*         PUT A FREE OVERFLOW REC IN A FREE LIST OF THE OVERFLOW RECORDS            */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseOverflowRec(Signal* signal) 
{
  rorOverflowRecPtr.p->nextfreeoverrec = cfirstfreeoverrec;
  cfirstfreeoverrec = rorOverflowRecPtr.i;
}//Dbacc::releaseOverflowRec()

/* --------------------------------------------------------------------------------- */
/* RELEASE_OVERPAGE                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseOverpage(Signal* signal) 
{
  DirRangePtr ropOverflowrangeptr;
  DirectoryarrayPtr ropOverflowDirptr;
  OverflowRecordPtr ropOverflowRecPtr;
  OverflowRecordPtr tuodOverflowRecPtr;
  Uint32 tropTmp;
  Uint32 tropTmp1;
  Uint32 tropTmp2;

  ropOverflowRecPtr.i = ropPageptr.p->word32[ZPOS_OVERFLOWREC];
  ndbrequire(ropOverflowRecPtr.i != RNIL);
  /* THE OVERFLOW REC WILL BE TAKEN OUT OF THE */
  /* FREELIST OF OVERFLOW PAGE WITH FREE */
  /* CONTAINER AND WILL BE PUT IN THE FREE LIST */
  /* OF THE FREE DIRECTORY INDEXES. */
  if ((fragrecptr.p->lastOverflowRec == ropOverflowRecPtr.i) &&
      (fragrecptr.p->firstOverflowRec == ropOverflowRecPtr.i)) {
    jam();
    return;	/* THERE IS ONLY ONE OVERFLOW PAGE */
  }//if
  if ((fragrecptr.p->createLcp == ZTRUE) &&
      (fragrecptr.p->lcpMaxOverDirIndex > ropPageptr.p->word32[ZPOS_PAGE_ID])) {
    /* --------------------------------------------------------------------------------- */
    /*       THE PAGE PARTICIPATES IN THE LOCAL CHECKPOINT.                              */
    /* --------------------------------------------------------------------------------- */
    if (fragrecptr.p->fragState == LCP_SEND_PAGES) {
      jam();
      /* --------------------------------------------------------------------------------- */
      /*       THE PAGE PARTICIPATES IN THE LOCAL CHECKPOINT AND THE WRITE TO DISK HAS NOT */
      /*       YET BEEN COMPLETED. WE MUST KEEP IT A WHILE LONGER SINCE AN EMPTY PAGE IS   */
      /*       NOT EQUIVALENT TO AN INITIALISED PAGE SINCE THE FREE LISTS CAN DIFFER.      */
      /* --------------------------------------------------------------------------------- */
      return;
    } else {
      if ((fragrecptr.p->fragState == LCP_SEND_OVER_PAGES) &&
          (fragrecptr.p->lcpDirIndex <= ropPageptr.p->word32[ZPOS_PAGE_ID])) {
        jam();
	/* --------------------------------------------------------------------------------- */
	/*       SEE COMMENT ABOVE                                                           */
	/* --------------------------------------------------------------------------------- */
        return;
      }//if
    }//if
  }//if
#if kalle
  logicalPage = 0;

  i = fragrecptr.p->directory;
  p = dirRange.getPtr(i);

  i1 = logicalPage >> 8;
  i2 = logicalPage & 0xFF;

  ndbrequire(i1 < 256);
  
  i = p->dirArray[i1];
  p = directoryarray.getPtr(i);

  physicPageId = p->pagep[i2];
  physicPageP = page8.getPtr(physicPageId);
  
  p->pagep[i2] = RNIL;
  rpPageptr = { physicPageId, physicPageP };
  releasePage(signal);
  
#endif

  /* --------------------------------------------------------------------------------- */
  /*       IT WAS OK TO RELEASE THE PAGE.                                              */
  /* --------------------------------------------------------------------------------- */
  ptrCheckGuard(ropOverflowRecPtr, coverflowrecsize, overflowRecord);
  tfoOverflowRecPtr = ropOverflowRecPtr;
  takeRecOutOfFreeOverpage(signal);
  ropOverflowRecPtr.p->overpage = RNIL;
  priOverflowRecPtr = ropOverflowRecPtr;
  putRecInFreeOverdir(signal);
  tropTmp = ropPageptr.p->word32[ZPOS_PAGE_ID];
  ropOverflowrangeptr.i = fragrecptr.p->overflowdir;
  tropTmp1 = tropTmp >> 8;
  tropTmp2 = tropTmp & 0xff;
  ptrCheckGuard(ropOverflowrangeptr, cdirrangesize, dirRange);
  arrGuard(tropTmp1, 256);
  ropOverflowDirptr.i = ropOverflowrangeptr.p->dirArray[tropTmp1];
  ptrCheckGuard(ropOverflowDirptr, cdirarraysize, directoryarray);
  ropOverflowDirptr.p->pagep[tropTmp2] = RNIL;
  rpPageptr = ropPageptr;
  releasePage(signal);
  if (ropOverflowRecPtr.p->dirindex != (fragrecptr.p->lastOverIndex - 1)) {
    jam();
    return;
  }//if
  /* --------------------------------------------------------------------------------- */
  /*       THE LAST PAGE IN THE DIRECTORY WAS RELEASED IT IS NOW NECESSARY TO REMOVE   */
  /*       ALL RELEASED OVERFLOW DIRECTORIES AT THE END OF THE LIST.                   */
  /* --------------------------------------------------------------------------------- */
  do {
    fragrecptr.p->lastOverIndex--;
    if (tropTmp2 == 0) {
      jam();
      ndbrequire(tropTmp1 != 0);
      ropOverflowrangeptr.p->dirArray[tropTmp1] = RNIL;
      rdDirptr.i = ropOverflowDirptr.i;
      releaseDirectory(signal);
      tropTmp1--;
      tropTmp2 = 255;
    } else {
      jam();
      tropTmp2--;
    }//if
    ropOverflowDirptr.i = ropOverflowrangeptr.p->dirArray[tropTmp1];
    ptrCheckGuard(ropOverflowDirptr, cdirarraysize, directoryarray);
  } while (ropOverflowDirptr.p->pagep[tropTmp2] == RNIL);
  /* --------------------------------------------------------------------------------- */
  /*       RELEASE ANY OVERFLOW RECORDS THAT ARE PART OF THE FREE INDEX LIST WHICH     */
  /*       DIRECTORY INDEX NOW HAS BEEN RELEASED.                                      */
  /* --------------------------------------------------------------------------------- */
  tuodOverflowRecPtr.i = fragrecptr.p->firstFreeDirindexRec;
  jam();
  while (tuodOverflowRecPtr.i != RNIL) {
    jam();
    ptrCheckGuard(tuodOverflowRecPtr, coverflowrecsize, overflowRecord);
    if (tuodOverflowRecPtr.p->dirindex >= fragrecptr.p->lastOverIndex) {
      jam();
      rorOverflowRecPtr = tuodOverflowRecPtr;
      troOverflowRecPtr.p = tuodOverflowRecPtr.p;
      tuodOverflowRecPtr.i = troOverflowRecPtr.p->nextOverList;
      takeRecOutOfFreeOverdir(signal);
      releaseOverflowRec(signal);
    } else {
      jam();
      tuodOverflowRecPtr.i = tuodOverflowRecPtr.p->nextOverList;
    }//if
  }//while
}//Dbacc::releaseOverpage()

/* --------------------------------------------------------------------------------- */
/* RELEASE_PAGE                                                                      */
/* --------------------------------------------------------------------------------- */
void Dbacc::releasePage(Signal* signal) 
{
#ifdef VM_TRACE
  bool inList = false;
  Uint32 numInList = 0;
  Page8Ptr tmpPagePtr;
  tmpPagePtr.i = cfirstfreepage;
  while (tmpPagePtr.i != RNIL){
    ptrCheckGuard(tmpPagePtr, cpagesize, page8);
    if (tmpPagePtr.i == rpPageptr.i){
      jam(); inList = true; 
      break;
    }    
    numInList++;
    tmpPagePtr.i = tmpPagePtr.p->word32[0];    
  }
  ndbrequire(inList == false);
  //  ndbrequire(numInList == cnoOfAllocatedPages);
#endif
  rpPageptr.p->word32[0] = cfirstfreepage;
  cfirstfreepage = rpPageptr.i;
  cnoOfAllocatedPages--;
}//Dbacc::releasePage()

/* --------------------------------------------------------------------------------- */
/* RELEASE_LCP_PAGE                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseLcpPage(Signal* signal) 
{
  rlpPageptr.p->word32[0] = cfirstfreeLcpPage;
  cfirstfreeLcpPage = rlpPageptr.i;
}//Dbacc::releaseLcpPage()

/* --------------------------------------------------------------------------------- */
/* RELEASE_SR_REC                                                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::releaseSrRec(Signal* signal) 
{
  srVersionPtr.p->nextFreeSr = cfirstFreeSrVersionRec;
  cfirstFreeSrVersionRec = srVersionPtr.i;
}//Dbacc::releaseSrRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_DIRECTORY                                                                   */
/*          DESCRIPTION: A DIRECTORY BLOCK (ZDIRBLOCKSIZE NUMBERS OF DIRECTORY       */
/*               RECORDS WILL BE ALLOCATED AND RETURNED.                             */
/*               SIZE OF DIRECTORY ERROR_CODE, WILL BE RETURNED IF THERE IS NO ANY   */
/*               FREE BLOCK                                                          */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeDirectory(Signal* signal) 
{
  Uint32 tsdyIndex;

  if (cfirstfreedir == RNIL) {
    jam();
    if (cdirarraysize <= cdirmemory) {
      jam();
      tresult = ZDIRSIZE_ERROR;
      return;
    } else {
      jam();
      sdDirptr.i = cdirmemory;
      ptrCheckGuard(sdDirptr, cdirarraysize, directoryarray);
      cdirmemory = cdirmemory + 1;
    }//if
  } else {
    jam();
    sdDirptr.i = cfirstfreedir;
    ptrCheckGuard(sdDirptr, cdirarraysize, directoryarray);
    cfirstfreedir = sdDirptr.p->pagep[0];
    sdDirptr.p->pagep[0] = RNIL;
  }//if
  for (tsdyIndex = 0; tsdyIndex <= 255; tsdyIndex++) {
    sdDirptr.p->pagep[tsdyIndex] = RNIL;
  }//for
}//Dbacc::seizeDirectory()

/* --------------------------------------------------------------------------------- */
/* SEIZE_DIRRANGE                                                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeDirrange(Signal* signal) 
{
  Uint32 tsdeIndex;

  newDirRangePtr.i = cfirstfreeDirrange;
  ptrCheckGuard(newDirRangePtr, cdirrangesize, dirRange);
  cfirstfreeDirrange = newDirRangePtr.p->dirArray[0];
  for (tsdeIndex = 0; tsdeIndex <= 255; tsdeIndex++) {
    newDirRangePtr.p->dirArray[tsdeIndex] = RNIL;
  }//for
}//Dbacc::seizeDirrange()

/* --------------------------------------------------------------------------------- */
/* SEIZE    FRAGREC                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeFragrec(Signal* signal) 
{
  fragrecptr.i = cfirstfreefrag;
  ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
  cfirstfreefrag = fragrecptr.p->nextfreefrag;
  fragrecptr.p->nextfreefrag = RNIL;
}//Dbacc::seizeFragrec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_FS_CONNECT_REC                                                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeFsConnectRec(Signal* signal) 
{
  fsConnectptr.i = cfsFirstfreeconnect;
  ptrCheckGuard(fsConnectptr, cfsConnectsize, fsConnectrec);
  cfsFirstfreeconnect = fsConnectptr.p->fsNext;
  fsConnectptr.p->fsNext = RNIL;
  fsConnectptr.p->fsState = WAIT_NOTHING;
}//Dbacc::seizeFsConnectRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_FS_OP_REC                                                                   */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeFsOpRec(Signal* signal) 
{
  fsOpptr.i = cfsFirstfreeop;
  ptrCheckGuard(fsOpptr, cfsOpsize, fsOprec);
  cfsFirstfreeop = fsOpptr.p->fsOpnext;
  fsOpptr.p->fsOpnext = RNIL;
}//Dbacc::seizeFsOpRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_LCP_CONNECT_REC                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeLcpConnectRec(Signal* signal) 
{
  lcpConnectptr.i = cfirstfreelcpConnect;
  ptrCheckGuard(lcpConnectptr, clcpConnectsize, lcpConnectrec);
  cfirstfreelcpConnect = lcpConnectptr.p->nextLcpConn;
  lcpConnectptr.p->nextLcpConn = RNIL;
}//Dbacc::seizeLcpConnectRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_OP_REC                                                                      */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeOpRec(Signal* signal) 
{
  operationRecPtr.i = cfreeopRec;
  ptrCheckGuard(operationRecPtr, coprecsize, operationrec);
  cfreeopRec = operationRecPtr.p->nextOp;	/* UPDATE FREE LIST OF OP RECORDS */
  /* PUTS OPERTION RECORD PTR IN THE LIST */
  /* OF OPERATION IN CONNECTION RECORD */
  operationRecPtr.p->nextOp = RNIL;
}//Dbacc::seizeOpRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE OVERFLOW RECORD                                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeOverRec(Signal* signal) {
  sorOverflowRecPtr.i = cfirstfreeoverrec;
  ptrCheckGuard(sorOverflowRecPtr, coverflowrecsize, overflowRecord);
  cfirstfreeoverrec = sorOverflowRecPtr.p->nextfreeoverrec;
  sorOverflowRecPtr.p->nextfreeoverrec = RNIL;
  sorOverflowRecPtr.p->prevOverRec = RNIL;
  sorOverflowRecPtr.p->nextOverRec = RNIL;
}//Dbacc::seizeOverRec()


/** 
 * A ZPAGESIZE_ERROR has occured, out of index pages
 * Print some debug info if debug compiled
 */
void Dbacc::zpagesize_error(const char* where){
  DEBUG(where << endl
	<< "  ZPAGESIZE_ERROR" << endl
	<< "  cfirstfreepage=" << cfirstfreepage << endl
	<< "  cfreepage=" <<cfreepage<<endl
	<< "  cpagesize=" <<cpagesize<<endl
	<< "  cnoOfAllocatedPages="<<cnoOfAllocatedPages);
}


/* --------------------------------------------------------------------------------- */
/* SEIZE_PAGE                                                                        */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizePage(Signal* signal) 
{
  tresult = 0;
  if (cfirstfreepage == RNIL) {
    if (cfreepage < cpagesize) {
      jam();
      spPageptr.i = cfreepage;
      ptrCheckGuard(spPageptr, cpagesize, page8);
      cfreepage++;
      cnoOfAllocatedPages++;
    } else {
      jam();
      zpagesize_error("Dbacc::seizePage");
      tresult = ZPAGESIZE_ERROR;
    }//if
  } else {
    jam();
    spPageptr.i = cfirstfreepage;
    ptrCheckGuard(spPageptr, cpagesize, page8);
    cfirstfreepage = spPageptr.p->word32[0];
    cnoOfAllocatedPages++;
  }//if
}//Dbacc::seizePage()

/* --------------------------------------------------------------------------------- */
/* SEIZE_PAGE                                                                        */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeLcpPage(Page8Ptr& regPagePtr) 
{
  regPagePtr.i = cfirstfreeLcpPage;
  ptrCheckGuard(regPagePtr, cpagesize, page8);
  cfirstfreeLcpPage = regPagePtr.p->word32[0];
}//Dbacc::seizeLcpPage()

/* --------------------------------------------------------------------------------- */
/* SEIZE_ROOTFRAGREC                                                                 */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeRootfragrec(Signal* signal) 
{
  rootfragrecptr.i = cfirstfreerootfrag;
  ptrCheckGuard(rootfragrecptr, crootfragmentsize, rootfragmentrec);
  cfirstfreerootfrag = rootfragrecptr.p->nextroot;
  rootfragrecptr.p->nextroot = RNIL;
}//Dbacc::seizeRootfragrec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_SCAN_REC                                                                    */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeScanRec(Signal* signal) 
{
  scanPtr.i = cfirstFreeScanRec;
  ptrCheckGuard(scanPtr, cscanRecSize, scanRec);
  ndbrequire(scanPtr.p->scanState == ScanRec::SCAN_DISCONNECT);
  cfirstFreeScanRec = scanPtr.p->scanNextfreerec;
}//Dbacc::seizeScanRec()

/* --------------------------------------------------------------------------------- */
/* SEIZE_SR_VERSION_REC                                                              */
/* --------------------------------------------------------------------------------- */
void Dbacc::seizeSrVerRec(Signal* signal) 
{
  srVersionPtr.i = cfirstFreeSrVersionRec;
  ptrCheckGuard(srVersionPtr, csrVersionRecSize, srVersionRec);
  cfirstFreeSrVersionRec = srVersionPtr.p->nextFreeSr;
}//Dbacc::seizeSrVerRec()

/* --------------------------------------------------------------------------------- */
/* SEND_SYSTEMERROR                                                                  */
/* --------------------------------------------------------------------------------- */
void Dbacc::sendSystemerror(Signal* signal) 
{
  progError(0, 0);
}//Dbacc::sendSystemerror()

/* --------------------------------------------------------------------------------- */
/* TAKE_REC_OUT_OF_FREE_OVERDIR                                                      */
/* --------------------------------------------------------------------------------- */
void Dbacc::takeRecOutOfFreeOverdir(Signal* signal) 
{
  OverflowRecordPtr tofoOverrecPtr;
  if (troOverflowRecPtr.p->nextOverList != RNIL) {
    jam();
    tofoOverrecPtr.i = troOverflowRecPtr.p->nextOverList;
    ptrCheckGuard(tofoOverrecPtr, coverflowrecsize, overflowRecord);
    tofoOverrecPtr.p->prevOverList = troOverflowRecPtr.p->prevOverList;
  }//if
  if (troOverflowRecPtr.p->prevOverList != RNIL) {
    jam();
    tofoOverrecPtr.i = troOverflowRecPtr.p->prevOverList;
    ptrCheckGuard(tofoOverrecPtr, coverflowrecsize, overflowRecord);
    tofoOverrecPtr.p->nextOverList = troOverflowRecPtr.p->nextOverList;
  } else {
    jam();
    fragrecptr.p->firstFreeDirindexRec = troOverflowRecPtr.p->nextOverList;
  }//if
}//Dbacc::takeRecOutOfFreeOverdir()

/* --------------------------------------------------------------------------------- */
/* TAKE_REC_OUT_OF_FREE_OVERPAGE                                                     */
/*         DESCRIPTION: AN OVERFLOW PAGE WHICH IS EMPTY HAVE TO BE TAKE OUT OF THE   */
/*                      FREE LIST OF OVERFLOW PAGE. BY THIS SUBROUTINE THIS LIST     */
/*                      WILL BE UPDATED.                                             */
/* --------------------------------------------------------------------------------- */
void Dbacc::takeRecOutOfFreeOverpage(Signal* signal) 
{
  OverflowRecordPtr tfoNextOverflowRecPtr;
  OverflowRecordPtr tfoPrevOverflowRecPtr;

  if (tfoOverflowRecPtr.p->nextOverRec != RNIL) {
    jam();
    tfoNextOverflowRecPtr.i = tfoOverflowRecPtr.p->nextOverRec;
    ptrCheckGuard(tfoNextOverflowRecPtr, coverflowrecsize, overflowRecord);
    tfoNextOverflowRecPtr.p->prevOverRec = tfoOverflowRecPtr.p->prevOverRec;
  } else {
    ndbrequire(fragrecptr.p->lastOverflowRec == tfoOverflowRecPtr.i);
    jam();
    fragrecptr.p->lastOverflowRec = tfoOverflowRecPtr.p->prevOverRec;
  }//if
  if (tfoOverflowRecPtr.p->prevOverRec != RNIL) {
    jam();
    tfoPrevOverflowRecPtr.i = tfoOverflowRecPtr.p->prevOverRec;
    ptrCheckGuard(tfoPrevOverflowRecPtr, coverflowrecsize, overflowRecord);
    tfoPrevOverflowRecPtr.p->nextOverRec = tfoOverflowRecPtr.p->nextOverRec;
  } else {
    ndbrequire(fragrecptr.p->firstOverflowRec == tfoOverflowRecPtr.i);
    jam();
    fragrecptr.p->firstOverflowRec = tfoOverflowRecPtr.p->nextOverRec;
  }//if
}//Dbacc::takeRecOutOfFreeOverpage()

void
Dbacc::reportMemoryUsage(Signal* signal, int gth){
  signal->theData[0] = EventReport::MemoryUsage;
  signal->theData[1] = gth;
  signal->theData[2] = sizeof(* rpPageptr.p);
  signal->theData[3] = cnoOfAllocatedPages;
  signal->theData[4] = cpagesize;
  signal->theData[5] = DBACC;
  sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 6, JBB);
}

void
Dbacc::execDUMP_STATE_ORD(Signal* signal)
{
  DumpStateOrd * const dumpState = (DumpStateOrd *)&signal->theData[0];
  if (dumpState->args[0] == DumpStateOrd::AccDumpOneScanRec){
    Uint32 recordNo = RNIL;
    if (signal->length() == 2)
      recordNo = dumpState->args[1];
    else 
      return;

    if (recordNo >= cscanRecSize) 
      return;
    
    scanPtr.i = recordNo;
    ptrAss(scanPtr, scanRec);
    infoEvent("Dbacc::ScanRec[%d]: state=%d, transid(0x%x, 0x%x)",
	      scanPtr.i, scanPtr.p->scanState,scanPtr.p->scanTrid1,
	      scanPtr.p->scanTrid2);
    infoEvent(" timer=%d, continueBCount=%d, "
	      "activeLocalFrag=%d, root=%d, nextBucketIndex=%d",
	      scanPtr.p->scanTimer,
	      scanPtr.p->scanContinuebCounter,
	      scanPtr.p->activeLocalFrag,
	      scanPtr.p->rootPtr,
	      scanPtr.p->nextBucketIndex);
    infoEvent(" scanNextfreerec=%d firstActOp=%d firstLockedOp=%d, "
	      "scanLastLockedOp=%d firstQOp=%d lastQOp=%d",
	      scanPtr.p->scanNextfreerec,
	      scanPtr.p->scanFirstActiveOp,
	      scanPtr.p->scanFirstLockedOp,
	      scanPtr.p->scanLastLockedOp,
	      scanPtr.p->scanFirstQueuedOp,
	      scanPtr.p->scanLastQueuedOp);
    infoEvent(" scanUserP=%d, startNoBuck=%d, minBucketIndexToRescan=%d, "
	      "maxBucketIndexToRescan=%d",
	      scanPtr.p->scanUserptr,
	      scanPtr.p->startNoOfBuckets,
	      scanPtr.p->minBucketIndexToRescan,
	      scanPtr.p->maxBucketIndexToRescan);
    infoEvent(" scanBucketState=%d, scanLockHeld=%d, userBlockRef=%d, "
	      "scanMask=%d scanLockMode=%d, keyInfoFlag=%d",
	      scanPtr.p->scanBucketState,
	      scanPtr.p->scanLockHeld,
	      scanPtr.p->scanUserblockref,
	      scanPtr.p->scanMask,
	      scanPtr.p->scanLockMode,
	      scanPtr.p->scanKeyinfoFlag);
    return;
  }

  // Dump all ScanRec(ords)
  if (dumpState->args[0] == DumpStateOrd::AccDumpAllScanRec){
    Uint32 recordNo = 0;
    if (signal->length() == 1)
      infoEvent("ACC: Dump all ScanRec - size: %d",
		cscanRecSize);
    else if (signal->length() == 2)
      recordNo = dumpState->args[1];
    else
      return;
    
    dumpState->args[0] = DumpStateOrd::AccDumpOneScanRec;
    dumpState->args[1] = recordNo;
    execDUMP_STATE_ORD(signal);
    
    if (recordNo < cscanRecSize-1){
      dumpState->args[0] = DumpStateOrd::AccDumpAllScanRec;
      dumpState->args[1] = recordNo+1;
      sendSignal(reference(), GSN_DUMP_STATE_ORD, signal, 2, JBB);
    }
    return;
  }

  // Dump all active ScanRec(ords)
  if (dumpState->args[0] == DumpStateOrd::AccDumpAllActiveScanRec){
    Uint32 recordNo = 0;
    if (signal->length() == 1)
      infoEvent("ACC: Dump active ScanRec - size: %d",
		cscanRecSize);
    else if (signal->length() == 2)
      recordNo = dumpState->args[1];
    else
      return;

    ScanRecPtr sp;
    sp.i = recordNo;
    ptrAss(sp, scanRec);
    if (sp.p->scanState != ScanRec::SCAN_DISCONNECT){
      dumpState->args[0] = DumpStateOrd::AccDumpOneScanRec;
      dumpState->args[1] = recordNo;
      execDUMP_STATE_ORD(signal);
    }

    if (recordNo < cscanRecSize-1){
      dumpState->args[0] = DumpStateOrd::AccDumpAllActiveScanRec;
      dumpState->args[1] = recordNo+1;
      sendSignal(reference(), GSN_DUMP_STATE_ORD, signal, 2, JBB);
    }
    return;
  }

  if(dumpState->args[0] == DumpStateOrd::DumpPageMemory){
    reportMemoryUsage(signal, 0);
    return;
  }

  if(dumpState->args[0] == DumpStateOrd::EnableUndoDelayDataWrite){
    ndbout << "Dbacc:: delay write of datapages for table = " 
	   << dumpState->args[1]<< endl;
    c_errorInsert3000_TableId = dumpState->args[1];
    SET_ERROR_INSERT_VALUE(3000);
    return;
  }

  if(dumpState->args[0] == DumpStateOrd::AccDumpOneOperationRec){
    Uint32 recordNo = RNIL;
    if (signal->length() == 2)
      recordNo = dumpState->args[1];
    else 
      return;

    if (recordNo >= coprecsize) 
      return;
    
    OperationrecPtr tmpOpPtr;
    tmpOpPtr.i = recordNo;
    ptrAss(tmpOpPtr, operationrec);
    infoEvent("Dbacc::operationrec[%d]: opState=%d, transid(0x%x, 0x%x)",
	      tmpOpPtr.i, tmpOpPtr.p->opState, tmpOpPtr.p->transId1,
	      tmpOpPtr.p->transId2);
    infoEvent("elementIsforward=%d, elementPage=%d, elementPointer=%d ",
	      tmpOpPtr.p->elementIsforward, tmpOpPtr.p->elementPage, 
	      tmpOpPtr.p->elementPointer);
    infoEvent("fid=%d, fragptr=%d, hashvaluePart=%d ",
	      tmpOpPtr.p->fid, tmpOpPtr.p->fragptr, 
	      tmpOpPtr.p->hashvaluePart);
    infoEvent("hashValue=%d, insertDeleteLen=%d, keyinfoPage=%d ",
	      tmpOpPtr.p->hashValue, tmpOpPtr.p->insertDeleteLen, 
	      tmpOpPtr.p->keyinfoPage);
    infoEvent("nextLockOwnerOp=%d, nextOp=%d, nextParallelQue=%d ",
	      tmpOpPtr.p->nextLockOwnerOp, tmpOpPtr.p->nextOp, 
	      tmpOpPtr.p->nextParallelQue);
    infoEvent("nextQueOp=%d, nextSerialQue=%d, prevOp=%d ",
	      tmpOpPtr.p->nextQueOp, tmpOpPtr.p->nextSerialQue, 
	      tmpOpPtr.p->prevOp);
    infoEvent("prevLockOwnerOp=%d, prevParallelQue=%d, prevQueOp=%d ",
	      tmpOpPtr.p->prevLockOwnerOp, tmpOpPtr.p->nextParallelQue, 
	      tmpOpPtr.p->prevQueOp);
    infoEvent("prevSerialQue=%d, scanRecPtr=%d, longPagePtr=%d ",
	      tmpOpPtr.p->prevSerialQue, tmpOpPtr.p->scanRecPtr, 
	      tmpOpPtr.p->longPagePtr);
    infoEvent("transactionstate=%d, elementIsDisappeared=%d, insertIsDone=%d ",
	      tmpOpPtr.p->transactionstate, tmpOpPtr.p->elementIsDisappeared, 
	      tmpOpPtr.p->insertIsDone);
    infoEvent("lockMode=%d, lockOwner=%d, nodeType=%d ",
	      tmpOpPtr.p->lockMode, tmpOpPtr.p->lockOwner, 
	      tmpOpPtr.p->nodeType);
    infoEvent("operation=%d, opSimple=%d, dirtyRead=%d,scanBits=%d ",
	      tmpOpPtr.p->operation, tmpOpPtr.p->opSimple, 
	      tmpOpPtr.p->dirtyRead, tmpOpPtr.p->scanBits);
    return;
  }

  if(dumpState->args[0] == DumpStateOrd::AccDumpNumOpRecs){

    Uint32 freeOpRecs = 0;
    OperationrecPtr opRecPtr;
    opRecPtr.i = cfreeopRec;
    while (opRecPtr.i != RNIL){
      freeOpRecs++;
      ptrCheckGuard(opRecPtr, coprecsize, operationrec);
      opRecPtr.i = opRecPtr.p->nextOp;
    }

    infoEvent("Dbacc::OperationRecords: num=%d, free=%d",	      
	      coprecsize, freeOpRecs);

    return;
  }
  if(dumpState->args[0] == DumpStateOrd::AccDumpFreeOpRecs){

    OperationrecPtr opRecPtr;
    opRecPtr.i = cfreeopRec;
    while (opRecPtr.i != RNIL){
      
      dumpState->args[0] = DumpStateOrd::AccDumpOneOperationRec;
      dumpState->args[1] = opRecPtr.i;
      execDUMP_STATE_ORD(signal);

      ptrCheckGuard(opRecPtr, coprecsize, operationrec);
      opRecPtr.i = opRecPtr.p->nextOp;
    }


    return;
  }

  if(dumpState->args[0] == DumpStateOrd::AccDumpNotFreeOpRecs){
    Uint32 recordStart = RNIL;
    if (signal->length() == 2)
      recordStart = dumpState->args[1];
    else 
      return;

    if (recordStart >= coprecsize) 
      return;

    for (Uint32 i = recordStart; i < coprecsize; i++){

      bool inFreeList = false;
      OperationrecPtr opRecPtr;
      opRecPtr.i = cfreeopRec;
      while (opRecPtr.i != RNIL){
	if (opRecPtr.i == i){
	  inFreeList = true;
	  break;
	}
	ptrCheckGuard(opRecPtr, coprecsize, operationrec);
	opRecPtr.i = opRecPtr.p->nextOp;
      }
      if (inFreeList == false){
	dumpState->args[0] = DumpStateOrd::AccDumpOneOperationRec;
	dumpState->args[1] = i;
	execDUMP_STATE_ORD(signal);	
      }
    }
    return;
  }

#if 0
  if (type == 100) {
    RelTabMemReq * const req = (RelTabMemReq *)signal->getDataPtrSend();
    req->primaryTableId = 2;
    req->secondaryTableId = RNIL;
    req->userPtr = 2;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_REL_TABMEMREQ, signal,
               RelTabMemReq::SignalLength, JBB);
    return;
  }//if
  if (type == 101) {
    RelTabMemReq * const req = (RelTabMemReq *)signal->getDataPtrSend();
    req->primaryTableId = 4;
    req->secondaryTableId = 5;
    req->userPtr = 4;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_REL_TABMEMREQ, signal,
               RelTabMemReq::SignalLength, JBB);
    return;
  }//if
  if (type == 102) {
    RelTabMemReq * const req = (RelTabMemReq *)signal->getDataPtrSend();
    req->primaryTableId = 6;
    req->secondaryTableId = 8;
    req->userPtr = 6;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_REL_TABMEMREQ, signal,
               RelTabMemReq::SignalLength, JBB);
    return;
  }//if
  if (type == 103) {
    DropTabFileReq * const req = (DropTabFileReq *)signal->getDataPtrSend();
    req->primaryTableId = 2;
    req->secondaryTableId = RNIL;
    req->userPtr = 2;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_DROP_TABFILEREQ, signal,
               DropTabFileReq::SignalLength, JBB);
    return;
  }//if
  if (type == 104) {
    DropTabFileReq * const req = (DropTabFileReq *)signal->getDataPtrSend();
    req->primaryTableId = 4;
    req->secondaryTableId = 5;
    req->userPtr = 4;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_DROP_TABFILEREQ, signal,
               DropTabFileReq::SignalLength, JBB);
    return;
  }//if
  if (type == 105) {
    DropTabFileReq * const req = (DropTabFileReq *)signal->getDataPtrSend();
    req->primaryTableId = 6;
    req->secondaryTableId = 8;
    req->userPtr = 6;
    req->userRef = DBDICT_REF;
    sendSignal(cownBlockref, GSN_DROP_TABFILEREQ, signal,
               DropTabFileReq::SignalLength, JBB);
    return;
  }//if
#endif
}//Dbacc::execDUMP_STATE_ORD()

void Dbacc::execSET_VAR_REQ(Signal* signal) 
{
13248
#if 0
13249 13250 13251 13252 13253 13254 13255 13256 13257 13258 13259 13260 13261 13262 13263 13264 13265 13266 13267 13268
  SetVarReq* const setVarReq = (SetVarReq*)&signal->theData[0];
  ConfigParamId var = setVarReq->variable();
  int val = setVarReq->value();


  switch (var) {

  case NoOfDiskPagesToDiskAfterRestartACC:
    clblPagesPerTick = val;
    sendSignal(CMVMI_REF, GSN_SET_VAR_CONF, signal, 1, JBB);
    break;

  case NoOfDiskPagesToDiskDuringRestartACC:
    // Valid only during start so value not set.
    sendSignal(CMVMI_REF, GSN_SET_VAR_CONF, signal, 1, JBB);
    break;

  default:
    sendSignal(CMVMI_REF, GSN_SET_VAR_REF, signal, 1, JBB);
  } // switch
13269
#endif
13270 13271

}//execSET_VAR_REQ()