/* 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 */ #include <ndb_global.h> #include <Ndb.hpp> #include <NdbScanOperation.hpp> #include <NdbIndexScanOperation.hpp> #include <NdbTransaction.hpp> #include "NdbApiSignal.hpp" #include <NdbOut.hpp> #include "NdbDictionaryImpl.hpp" #include <NdbBlob.hpp> #include <NdbRecAttr.hpp> #include <NdbReceiver.hpp> #include <stdlib.h> #include <NdbSqlUtil.hpp> #include <signaldata/ScanTab.hpp> #include <signaldata/KeyInfo.hpp> #include <signaldata/AttrInfo.hpp> #include <signaldata/TcKeyReq.hpp> #define DEBUG_NEXT_RESULT 0 NdbScanOperation::NdbScanOperation(Ndb* aNdb) : NdbOperation(aNdb), m_transConnection(NULL) { theParallelism = 0; m_allocated_receivers = 0; m_prepared_receivers = 0; m_api_receivers = 0; m_conf_receivers = 0; m_sent_receivers = 0; m_receivers = 0; m_array = new Uint32[1]; // skip if on delete in fix_receivers theSCAN_TABREQ = 0; m_executed = false; } NdbScanOperation::~NdbScanOperation() { for(Uint32 i = 0; i<m_allocated_receivers; i++){ m_receivers[i]->release(); theNdb->releaseNdbScanRec(m_receivers[i]); } delete[] m_array; } void NdbScanOperation::setErrorCode(int aErrorCode){ NdbTransaction* tmp = theNdbCon; theNdbCon = m_transConnection; NdbOperation::setErrorCode(aErrorCode); theNdbCon = tmp; } void NdbScanOperation::setErrorCodeAbort(int aErrorCode){ NdbTransaction* tmp = theNdbCon; theNdbCon = m_transConnection; NdbOperation::setErrorCodeAbort(aErrorCode); theNdbCon = tmp; } /***************************************************************************** * int init(); * * Return Value: Return 0 : init was successful. * Return -1: In all other case. * Remark: Initiates operation record after allocation. *****************************************************************************/ int NdbScanOperation::init(const NdbTableImpl* tab, NdbTransaction* myConnection) { m_transConnection = myConnection; //NdbConnection* aScanConnection = theNdb->startTransaction(myConnection); theNdb->theRemainingStartTransactions++; // will be checked in hupp... NdbTransaction* aScanConnection = theNdb->hupp(myConnection); if (!aScanConnection){ theNdb->theRemainingStartTransactions--; setErrorCodeAbort(theNdb->getNdbError().code); return -1; } // NOTE! The hupped trans becomes the owner of the operation if(NdbOperation::init(tab, aScanConnection) != 0){ theNdb->theRemainingStartTransactions--; return -1; } initInterpreter(); theStatus = GetValue; theOperationType = OpenScanRequest; theNdbCon->theMagicNumber = 0xFE11DF; theNoOfTupKeyLeft = tab->m_noOfDistributionKeys; m_read_range_no = 0; m_executed = false; return 0; } int NdbScanOperation::readTuples(NdbScanOperation::LockMode lm, Uint32 scan_flags, Uint32 parallel) { m_ordered = m_descending = false; Uint32 fragCount = m_currentTable->m_fragmentCount; if (parallel > fragCount || parallel == 0) { parallel = fragCount; } // It is only possible to call openScan if // 1. this transcation don't already contain another scan operation // 2. this transaction don't already contain other operations // 3. theScanOp contains a NdbScanOperation if (theNdbCon->theScanningOp != NULL){ setErrorCode(4605); return -1; } theNdbCon->theScanningOp = this; theLockMode = lm; bool lockExcl, lockHoldMode, readCommitted; switch(lm){ case NdbScanOperation::LM_Read: lockExcl = false; lockHoldMode = true; readCommitted = false; break; case NdbScanOperation::LM_Exclusive: lockExcl = true; lockHoldMode = true; readCommitted = false; break; case NdbScanOperation::LM_CommittedRead: lockExcl = false; lockHoldMode = false; readCommitted = true; break; default: setErrorCode(4003); return -1; } m_keyInfo = lockExcl ? 1 : 0; bool tupScan = (scan_flags & SF_TupScan); #if 1 // XXX temp for testing { char* p = getenv("NDB_USE_TUPSCAN"); if (p != 0) { unsigned n = atoi(p); // 0-10 if (::time(0) % 10 < n) tupScan = true; } } #endif bool rangeScan = false; if (m_accessTable->m_indexType == NdbDictionary::Index::OrderedIndex) { if (m_currentTable == m_accessTable){ // Old way of scanning indexes, should not be allowed m_currentTable = theNdb->theDictionary-> getTable(m_currentTable->m_primaryTable.c_str()); assert(m_currentTable != NULL); } assert (m_currentTable != m_accessTable); // Modify operation state theStatus = GetValue; theOperationType = OpenRangeScanRequest; rangeScan = true; tupScan = false; } theParallelism = parallel; if(fix_receivers(parallel) == -1){ setErrorCodeAbort(4000); return -1; } theSCAN_TABREQ = (!theSCAN_TABREQ ? theNdb->getSignal() : theSCAN_TABREQ); if (theSCAN_TABREQ == NULL) { setErrorCodeAbort(4000); return -1; }//if theSCAN_TABREQ->setSignal(GSN_SCAN_TABREQ); ScanTabReq * req = CAST_PTR(ScanTabReq, theSCAN_TABREQ->getDataPtrSend()); req->apiConnectPtr = theNdbCon->theTCConPtr; req->tableId = m_accessTable->m_id; req->tableSchemaVersion = m_accessTable->m_version; req->storedProcId = 0xFFFF; req->buddyConPtr = theNdbCon->theBuddyConPtr; Uint32 reqInfo = 0; ScanTabReq::setParallelism(reqInfo, parallel); ScanTabReq::setScanBatch(reqInfo, 0); ScanTabReq::setLockMode(reqInfo, lockExcl); ScanTabReq::setHoldLockFlag(reqInfo, lockHoldMode); ScanTabReq::setReadCommittedFlag(reqInfo, readCommitted); ScanTabReq::setRangeScanFlag(reqInfo, rangeScan); ScanTabReq::setTupScanFlag(reqInfo, tupScan); req->requestInfo = reqInfo; Uint64 transId = theNdbCon->getTransactionId(); req->transId1 = (Uint32) transId; req->transId2 = (Uint32) (transId >> 32); NdbApiSignal* tSignal = theSCAN_TABREQ->next(); if(!tSignal) { theSCAN_TABREQ->next(tSignal = theNdb->getSignal()); } theLastKEYINFO = tSignal; tSignal->setSignal(GSN_KEYINFO); theKEYINFOptr = ((KeyInfo*)tSignal->getDataPtrSend())->keyData; theTotalNrOfKeyWordInSignal= 0; getFirstATTRINFOScan(); return 0; } int NdbScanOperation::fix_receivers(Uint32 parallel){ assert(parallel > 0); if(parallel > m_allocated_receivers){ const Uint32 sz = parallel * (4*sizeof(char*)+sizeof(Uint32)); Uint64 * tmp = new Uint64[(sz+7)/8]; // Save old receivers memcpy(tmp, m_receivers, m_allocated_receivers*sizeof(char*)); delete[] m_array; m_array = (Uint32*)tmp; m_receivers = (NdbReceiver**)tmp; m_api_receivers = m_receivers + parallel; m_conf_receivers = m_api_receivers + parallel; m_sent_receivers = m_conf_receivers + parallel; m_prepared_receivers = (Uint32*)(m_sent_receivers + parallel); // Only get/init "new" receivers NdbReceiver* tScanRec; for (Uint32 i = m_allocated_receivers; i < parallel; i ++) { tScanRec = theNdb->getNdbScanRec(); if (tScanRec == NULL) { setErrorCodeAbort(4000); return -1; }//if m_receivers[i] = tScanRec; tScanRec->init(NdbReceiver::NDB_SCANRECEIVER, this); } m_allocated_receivers = parallel; } reset_receivers(parallel, 0); return 0; } /** * Move receiver from send array to conf:ed array */ void NdbScanOperation::receiver_delivered(NdbReceiver* tRec){ if(theError.code == 0){ if(DEBUG_NEXT_RESULT) ndbout_c("receiver_delivered"); Uint32 idx = tRec->m_list_index; Uint32 last = m_sent_receivers_count - 1; if(idx != last){ NdbReceiver * move = m_sent_receivers[last]; m_sent_receivers[idx] = move; move->m_list_index = idx; } m_sent_receivers_count = last; last = m_conf_receivers_count; m_conf_receivers[last] = tRec; m_conf_receivers_count = last + 1; tRec->m_list_index = last; tRec->m_current_row = 0; } } /** * Remove receiver as it's completed */ void NdbScanOperation::receiver_completed(NdbReceiver* tRec){ if(theError.code == 0){ if(DEBUG_NEXT_RESULT) ndbout_c("receiver_completed"); Uint32 idx = tRec->m_list_index; Uint32 last = m_sent_receivers_count - 1; if(idx != last){ NdbReceiver * move = m_sent_receivers[last]; m_sent_receivers[idx] = move; move->m_list_index = idx; } m_sent_receivers_count = last; } } /***************************************************************************** * int getFirstATTRINFOScan( U_int32 aData ) * * Return Value: Return 0: Successful * Return -1: All other cases * Parameters: None: Only allocate the first signal. * Remark: When a scan is defined we need to use this method instead * of insertATTRINFO for the first signal. * This is because we need not to mess up the code in * insertATTRINFO with if statements since we are not * interested in the TCKEYREQ signal. *****************************************************************************/ int NdbScanOperation::getFirstATTRINFOScan() { NdbApiSignal* tSignal; tSignal = theNdb->getSignal(); if (tSignal == NULL){ setErrorCodeAbort(4000); return -1; } tSignal->setSignal(m_attrInfoGSN); theAI_LenInCurrAI = 8; theATTRINFOptr = &tSignal->getDataPtrSend()[8]; theFirstATTRINFO = tSignal; theCurrentATTRINFO = tSignal; theCurrentATTRINFO->next(NULL); return 0; } /** * Constats for theTupleKeyDefined[][0] */ #define SETBOUND_EQ 1 #define FAKE_PTR 2 #define API_PTR 3 #define WAITFOR_SCAN_TIMEOUT 120000 int NdbScanOperation::executeCursor(int nodeId){ NdbTransaction * tCon = theNdbCon; TransporterFacade* tp = TransporterFacade::instance(); Guard guard(tp->theMutexPtr); Uint32 magic = tCon->theMagicNumber; Uint32 seq = tCon->theNodeSequence; if (tp->get_node_alive(nodeId) && (tp->getNodeSequence(nodeId) == seq)) { /** * Only call prepareSendScan first time (incase of restarts) * - check with theMagicNumber */ tCon->theMagicNumber = 0x37412619; if(magic != 0x37412619 && prepareSendScan(tCon->theTCConPtr, tCon->theTransactionId) == -1) return -1; if (doSendScan(nodeId) == -1) return -1; m_executed= true; // Mark operation as executed return 0; } else { if (!(tp->get_node_stopping(nodeId) && (tp->getNodeSequence(nodeId) == seq))){ TRACE_DEBUG("The node is hard dead when attempting to start a scan"); setErrorCode(4029); tCon->theReleaseOnClose = true; } else { TRACE_DEBUG("The node is stopping when attempting to start a scan"); setErrorCode(4030); }//if tCon->theCommitStatus = NdbTransaction::Aborted; }//if return -1; } int NdbScanOperation::nextResult(bool fetchAllowed, bool forceSend) { int res; if ((res = nextResultImpl(fetchAllowed, forceSend)) == 0) { // handle blobs NdbBlob* tBlob = theBlobList; while (tBlob != 0) { if (tBlob->atNextResult() == -1) return -1; tBlob = tBlob->theNext; } /* * Flush blob part ops on behalf of user because * - nextResult is analogous to execute(NoCommit) * - user is likely to want blob value before next execute */ if (m_transConnection->executePendingBlobOps() == -1) return -1; return 0; } return res; } int NdbScanOperation::nextResultImpl(bool fetchAllowed, bool forceSend) { if(m_ordered) return ((NdbIndexScanOperation*)this)->next_result_ordered(fetchAllowed, forceSend); /** * Check current receiver */ int retVal = 2; Uint32 idx = m_current_api_receiver; Uint32 last = m_api_receivers_count; m_curr_row = 0; if(DEBUG_NEXT_RESULT) ndbout_c("nextResult(%d) idx=%d last=%d", fetchAllowed, idx, last); /** * Check next buckets */ for(; idx < last; idx++){ NdbReceiver* tRec = m_api_receivers[idx]; if(tRec->nextResult()){ m_curr_row = tRec->copyout(theReceiver); retVal = 0; break; } } /** * We have advanced atleast one bucket */ if(!fetchAllowed || !retVal){ m_current_api_receiver = idx; if(DEBUG_NEXT_RESULT) ndbout_c("return %d", retVal); return retVal; } Uint32 nodeId = theNdbCon->theDBnode; TransporterFacade* tp = TransporterFacade::instance(); /* The PollGuard has an implicit call of unlock_and_signal through the ~PollGuard method. This method is called implicitly by the compiler in all places where the object is out of context due to a return, break, continue or simply end of statement block */ PollGuard poll_guard(tp, &theNdb->theImpl->theWaiter, theNdb->theNdbBlockNumber); if(theError.code) return -1; Uint32 seq = theNdbCon->theNodeSequence; if(seq == tp->getNodeSequence(nodeId) && send_next_scan(idx, false) == 0) { idx = m_current_api_receiver; last = m_api_receivers_count; do { if(theError.code){ setErrorCode(theError.code); if(DEBUG_NEXT_RESULT) ndbout_c("return -1"); return -1; } Uint32 cnt = m_conf_receivers_count; Uint32 sent = m_sent_receivers_count; if(DEBUG_NEXT_RESULT) ndbout_c("idx=%d last=%d cnt=%d sent=%d", idx, last, cnt, sent); if(cnt > 0){ /** * Just move completed receivers */ memcpy(m_api_receivers+last, m_conf_receivers, cnt * sizeof(char*)); last += cnt; m_conf_receivers_count = 0; } else if(retVal == 2 && sent > 0){ /** * No completed... */ int ret_code= poll_guard.wait_scan(WAITFOR_SCAN_TIMEOUT, nodeId, forceSend); if (ret_code == 0 && seq == tp->getNodeSequence(nodeId)) { continue; } else { idx = last; retVal = -2; //return_code; } } else if(retVal == 2){ /** * No completed & no sent -> EndOfData */ theError.code = -1; // make sure user gets error if he tries again if(DEBUG_NEXT_RESULT) ndbout_c("return 1"); return 1; } if(retVal == 0) break; for(; idx < last; idx++){ NdbReceiver* tRec = m_api_receivers[idx]; if(tRec->nextResult()){ m_curr_row = tRec->copyout(theReceiver); retVal = 0; break; } } } while(retVal == 2); } else { retVal = -3; } m_api_receivers_count = last; m_current_api_receiver = idx; switch(retVal){ case 0: case 1: case 2: if(DEBUG_NEXT_RESULT) ndbout_c("return %d", retVal); return retVal; case -1: setErrorCode(4008); // Timeout break; case -2: setErrorCode(4028); // Node fail break; case -3: // send_next_scan -> return fail (set error-code self) if(theError.code == 0) setErrorCode(4028); // seq changed = Node fail break; } theNdbCon->theTransactionIsStarted = false; theNdbCon->theReleaseOnClose = true; if(DEBUG_NEXT_RESULT) ndbout_c("return -1", retVal); return -1; } int NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag) { if(cnt > 0){ NdbApiSignal tSignal(theNdb->theMyRef); tSignal.setSignal(GSN_SCAN_NEXTREQ); Uint32* theData = tSignal.getDataPtrSend(); theData[0] = theNdbCon->theTCConPtr; theData[1] = stopScanFlag == true ? 1 : 0; Uint64 transId = theNdbCon->theTransactionId; theData[2] = transId; theData[3] = (Uint32) (transId >> 32); /** * Prepare ops */ Uint32 last = m_sent_receivers_count; Uint32 * prep_array = (cnt > 21 ? m_prepared_receivers : theData + 4); Uint32 sent = 0; for(Uint32 i = 0; i<cnt; i++){ NdbReceiver * tRec = m_api_receivers[i]; if((prep_array[sent] = tRec->m_tcPtrI) != RNIL) { m_sent_receivers[last+sent] = tRec; tRec->m_list_index = last+sent; tRec->prepareSend(); sent++; } } memmove(m_api_receivers, m_api_receivers+cnt, (theParallelism-cnt) * sizeof(char*)); int ret = 0; if(sent) { Uint32 nodeId = theNdbCon->theDBnode; TransporterFacade * tp = TransporterFacade::instance(); if(cnt > 21){ tSignal.setLength(4); LinearSectionPtr ptr[3]; ptr[0].p = prep_array; ptr[0].sz = sent; ret = tp->sendSignal(&tSignal, nodeId, ptr, 1); } else { tSignal.setLength(4+sent); ret = tp->sendSignal(&tSignal, nodeId); } } m_sent_receivers_count = last + sent; m_api_receivers_count -= cnt; m_current_api_receiver = 0; return ret; } return 0; } int NdbScanOperation::prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId) { printf("NdbScanOperation::prepareSend\n"); abort(); return 0; } int NdbScanOperation::doSend(int ProcessorId) { printf("NdbScanOperation::doSend\n"); return 0; } void NdbScanOperation::close(bool forceSend, bool releaseOp) { DBUG_ENTER("NdbScanOperation::close"); DBUG_PRINT("enter", ("this=%x tcon=%x con=%x force=%d release=%d", (UintPtr)this, (UintPtr)m_transConnection, (UintPtr)theNdbCon, forceSend, releaseOp)); if(m_transConnection){ if(DEBUG_NEXT_RESULT) ndbout_c("close() theError.code = %d " "m_api_receivers_count = %d " "m_conf_receivers_count = %d " "m_sent_receivers_count = %d", theError.code, m_api_receivers_count, m_conf_receivers_count, m_sent_receivers_count); TransporterFacade* tp = TransporterFacade::instance(); /* The PollGuard has an implicit call of unlock_and_signal through the ~PollGuard method. This method is called implicitly by the compiler in all places where the object is out of context due to a return, break, continue or simply end of statement block */ PollGuard poll_guard(tp, &theNdb->theImpl->theWaiter, theNdb->theNdbBlockNumber); close_impl(tp, forceSend, &poll_guard); } NdbConnection* tCon = theNdbCon; NdbConnection* tTransCon = m_transConnection; theNdbCon = NULL; m_transConnection = NULL; if (releaseOp && tTransCon) { NdbIndexScanOperation* tOp = (NdbIndexScanOperation*)this; tTransCon->releaseScanOperation(tOp); } tCon->theScanningOp = 0; theNdb->closeTransaction(tCon); theNdb->theRemainingStartTransactions--; DBUG_VOID_RETURN; } void NdbScanOperation::execCLOSE_SCAN_REP(){ m_conf_receivers_count = 0; m_sent_receivers_count = 0; } void NdbScanOperation::release() { if(theNdbCon != 0 || m_transConnection != 0){ close(); } for(Uint32 i = 0; i<m_allocated_receivers; i++){ m_receivers[i]->release(); } NdbOperation::release(); if(theSCAN_TABREQ) { theNdb->releaseSignal(theSCAN_TABREQ); theSCAN_TABREQ = 0; } } /*************************************************************************** int prepareSendScan(Uint32 aTC_ConnectPtr, Uint64 aTransactionId) Return Value: Return 0 : preparation of send was succesful. Return -1: In all other case. Parameters: aTC_ConnectPtr: the Connect pointer to TC. aTransactionId: the Transaction identity of the transaction. Remark: Puts the the final data into ATTRINFO signal(s) after this we know the how many signal to send and their sizes ***************************************************************************/ int NdbScanOperation::prepareSendScan(Uint32 aTC_ConnectPtr, Uint64 aTransactionId){ if (theInterpretIndicator != 1 || (theOperationType != OpenScanRequest && theOperationType != OpenRangeScanRequest)) { setErrorCodeAbort(4005); return -1; } theErrorLine = 0; // In preapareSendInterpreted we set the sizes (word 4-8) in the // first ATTRINFO signal. if (prepareSendInterpreted() == -1) return -1; if(m_ordered){ ((NdbIndexScanOperation*)this)->fix_get_values(); } theCurrentATTRINFO->setLength(theAI_LenInCurrAI); /** * Prepare all receivers */ theReceiver.prepareSend(); bool keyInfo = m_keyInfo; Uint32 key_size = keyInfo ? m_currentTable->m_keyLenInWords : 0; /** * The number of records sent by each LQH is calculated and the kernel * is informed of this number by updating the SCAN_TABREQ signal */ Uint32 batch_size, batch_byte_size, first_batch_size; theReceiver.calculate_batch_size(key_size, theParallelism, batch_size, batch_byte_size, first_batch_size); ScanTabReq * req = CAST_PTR(ScanTabReq, theSCAN_TABREQ->getDataPtrSend()); ScanTabReq::setScanBatch(req->requestInfo, batch_size); req->batch_byte_size= batch_byte_size; req->first_batch_size= first_batch_size; /** * Set keyinfo flag * (Always keyinfo when using blobs) */ Uint32 reqInfo = req->requestInfo; ScanTabReq::setKeyinfoFlag(reqInfo, keyInfo); ScanTabReq::setNoDiskFlag(reqInfo, m_no_disk_flag); req->requestInfo = reqInfo; for(Uint32 i = 0; i<theParallelism; i++){ m_receivers[i]->do_get_value(&theReceiver, batch_size, key_size, m_read_range_no); } return 0; } /***************************************************************************** int doSend() Return Value: Return >0 : send was succesful, returns number of signals sent Return -1: In all other case. Parameters: aProcessorId: Receiving processor node Remark: Sends the ATTRINFO signal(s) *****************************************************************************/ int NdbScanOperation::doSendScan(int aProcessorId) { Uint32 tSignalCount = 0; NdbApiSignal* tSignal; if (theInterpretIndicator != 1 || (theOperationType != OpenScanRequest && theOperationType != OpenRangeScanRequest)) { setErrorCodeAbort(4005); return -1; } assert(theSCAN_TABREQ != NULL); tSignal = theSCAN_TABREQ; Uint32 tupKeyLen = theTupKeyLen; Uint32 len = theTotalNrOfKeyWordInSignal; Uint32 aTC_ConnectPtr = theNdbCon->theTCConPtr; Uint64 transId = theNdbCon->theTransactionId; // Update the "attribute info length in words" in SCAN_TABREQ before // sending it. This could not be done in openScan because // we created the ATTRINFO signals after the SCAN_TABREQ signal. ScanTabReq * const req = CAST_PTR(ScanTabReq, tSignal->getDataPtrSend()); req->attrLenKeyLen = (tupKeyLen << 16) | theTotalCurrAI_Len; Uint32 tmp = req->requestInfo; ScanTabReq::setDistributionKeyFlag(tmp, theDistrKeyIndicator_); req->distributionKey = theDistributionKey; req->requestInfo = tmp; tSignal->setLength(ScanTabReq::StaticLength + theDistrKeyIndicator_); TransporterFacade *tp = TransporterFacade::instance(); LinearSectionPtr ptr[3]; ptr[0].p = m_prepared_receivers; ptr[0].sz = theParallelism; if (tp->sendSignal(tSignal, aProcessorId, ptr, 1) == -1) { setErrorCode(4002); return -1; } if (tupKeyLen > 0){ // must have at least one signal since it contains attrLen for bounds assert(theLastKEYINFO != NULL); tSignal = theLastKEYINFO; tSignal->setLength(KeyInfo::HeaderLength + theTotalNrOfKeyWordInSignal); assert(theSCAN_TABREQ->next() != NULL); tSignal = theSCAN_TABREQ->next(); NdbApiSignal* last; do { KeyInfo * keyInfo = CAST_PTR(KeyInfo, tSignal->getDataPtrSend()); keyInfo->connectPtr = aTC_ConnectPtr; keyInfo->transId[0] = Uint32(transId); keyInfo->transId[1] = Uint32(transId >> 32); if (tp->sendSignal(tSignal,aProcessorId) == -1){ setErrorCode(4002); return -1; } tSignalCount++; last = tSignal; tSignal = tSignal->next(); } while(last != theLastKEYINFO); } tSignal = theFirstATTRINFO; while (tSignal != NULL) { AttrInfo * attrInfo = CAST_PTR(AttrInfo, tSignal->getDataPtrSend()); attrInfo->connectPtr = aTC_ConnectPtr; attrInfo->transId[0] = Uint32(transId); attrInfo->transId[1] = Uint32(transId >> 32); if (tp->sendSignal(tSignal,aProcessorId) == -1){ setErrorCode(4002); return -1; } tSignalCount++; tSignal = tSignal->next(); } theStatus = WaitResponse; m_curr_row = 0; m_sent_receivers_count = theParallelism; if(m_ordered) { m_current_api_receiver = theParallelism; m_api_receivers_count = theParallelism; } return tSignalCount; }//NdbOperation::doSendScan() /***************************************************************************** * NdbOperation* takeOverScanOp(NdbTransaction* updateTrans); * * Parameters: The update transactions NdbTransaction pointer. * Return Value: A reference to the transferred operation object * or NULL if no success. * Remark: Take over the scanning transactions NdbOperation * object for a tuple to an update transaction, * which is the last operation read in nextScanResult() * (theNdbCon->thePreviousScanRec) * * FUTURE IMPLEMENTATION: (This note was moved from header file.) * In the future, it will even be possible to transfer * to a NdbTransaction on another Ndb-object. * In this case the receiving NdbTransaction-object must call * a method receiveOpFromScan to actually receive the information. * This means that the updating transactions can be placed * in separate threads and thus increasing the parallelism during * the scan process. ****************************************************************************/ int NdbScanOperation::getKeyFromKEYINFO20(Uint32* data, unsigned size) { NdbRecAttr * tRecAttr = m_curr_row; if(tRecAttr) { const Uint32 * src = (Uint32*)tRecAttr->aRef(); memcpy(data, src, 4*size); return 0; } return -1; } NdbOperation* NdbScanOperation::takeOverScanOp(OperationType opType, NdbTransaction* pTrans) { NdbRecAttr * tRecAttr = m_curr_row; if(tRecAttr) { NdbOperation * newOp = pTrans->getNdbOperation(m_currentTable); if (newOp == NULL){ return NULL; } pTrans->theSimpleState = 0; assert(tRecAttr->get_size_in_bytes() > 0); assert(tRecAttr->get_size_in_bytes() < 65536); const Uint32 len = (tRecAttr->get_size_in_bytes() + 3)/4-1; newOp->theTupKeyLen = len; newOp->theOperationType = opType; if (opType == DeleteRequest) { newOp->theStatus = GetValue; } else { newOp->theStatus = SetValue; } const Uint32 * src = (Uint32*)tRecAttr->aRef(); const Uint32 tScanInfo = src[len] & 0x3FFFF; const Uint32 tTakeOverFragment = src[len] >> 20; { UintR scanInfo = 0; TcKeyReq::setTakeOverScanFlag(scanInfo, 1); TcKeyReq::setTakeOverScanFragment(scanInfo, tTakeOverFragment); TcKeyReq::setTakeOverScanInfo(scanInfo, tScanInfo); newOp->theScanInfo = scanInfo; newOp->theDistrKeyIndicator_ = 1; newOp->theDistributionKey = tTakeOverFragment; } // Copy the first 8 words of key info from KEYINF20 into TCKEYREQ TcKeyReq * tcKeyReq = CAST_PTR(TcKeyReq,newOp->theTCREQ->getDataPtrSend()); Uint32 i = 0; for (i = 0; i < TcKeyReq::MaxKeyInfo && i < len; i++) { tcKeyReq->keyInfo[i] = * src++; } if(i < len){ NdbApiSignal* tSignal = theNdb->getSignal(); newOp->theTCREQ->next(tSignal); Uint32 left = len - i; while(tSignal && left > KeyInfo::DataLength){ tSignal->setSignal(GSN_KEYINFO); KeyInfo * keyInfo = CAST_PTR(KeyInfo, tSignal->getDataPtrSend()); memcpy(keyInfo->keyData, src, 4 * KeyInfo::DataLength); src += KeyInfo::DataLength; left -= KeyInfo::DataLength; tSignal->next(theNdb->getSignal()); tSignal = tSignal->next(); } if(tSignal && left > 0){ tSignal->setSignal(GSN_KEYINFO); KeyInfo * keyInfo = CAST_PTR(KeyInfo, tSignal->getDataPtrSend()); memcpy(keyInfo->keyData, src, 4 * left); } } // create blob handles automatically if (opType == DeleteRequest && m_currentTable->m_noOfBlobs != 0) { for (unsigned i = 0; i < m_currentTable->m_columns.size(); i++) { NdbColumnImpl* c = m_currentTable->m_columns[i]; assert(c != 0); if (c->getBlobType()) { if (newOp->getBlobHandle(pTrans, c) == NULL) return NULL; } } } return newOp; } return 0; } NdbBlob* NdbScanOperation::getBlobHandle(const char* anAttrName) { m_keyInfo = 1; return NdbOperation::getBlobHandle(m_transConnection, m_currentTable->getColumn(anAttrName)); } NdbBlob* NdbScanOperation::getBlobHandle(Uint32 anAttrId) { m_keyInfo = 1; return NdbOperation::getBlobHandle(m_transConnection, m_currentTable->getColumn(anAttrId)); } NdbIndexScanOperation::NdbIndexScanOperation(Ndb* aNdb) : NdbScanOperation(aNdb) { } NdbIndexScanOperation::~NdbIndexScanOperation(){ } int NdbIndexScanOperation::setBound(const char* anAttrName, int type, const void* aValue) { return setBound(m_accessTable->getColumn(anAttrName), type, aValue); } int NdbIndexScanOperation::setBound(Uint32 anAttrId, int type, const void* aValue) { return setBound(m_accessTable->getColumn(anAttrId), type, aValue); } int NdbIndexScanOperation::equal_impl(const NdbColumnImpl* anAttrObject, const char* aValue) { return setBound(anAttrObject, BoundEQ, aValue); } NdbRecAttr* NdbIndexScanOperation::getValue_impl(const NdbColumnImpl* attrInfo, char* aValue){ if(!m_ordered){ return NdbScanOperation::getValue_impl(attrInfo, aValue); } int id = attrInfo->getColumnNo(); // In "real" table assert(m_accessTable->m_index); int sz = (int)m_accessTable->m_index->m_key_ids.size(); if(id >= sz || (id = m_accessTable->m_index->m_key_ids[id]) == -1){ return NdbScanOperation::getValue_impl(attrInfo, aValue); } assert(id < NDB_MAX_NO_OF_ATTRIBUTES_IN_KEY); Uint32 marker = theTupleKeyDefined[id][0]; if(marker == SETBOUND_EQ){ return NdbScanOperation::getValue_impl(attrInfo, aValue); } else if(marker == API_PTR){ return NdbScanOperation::getValue_impl(attrInfo, aValue); } assert(marker == FAKE_PTR); UintPtr oldVal; oldVal = theTupleKeyDefined[id][1]; #if (SIZEOF_CHARP == 8) oldVal = oldVal | (((UintPtr)theTupleKeyDefined[id][2]) << 32); #endif theTupleKeyDefined[id][0] = API_PTR; NdbRecAttr* tmp = (NdbRecAttr*)oldVal; tmp->setup(attrInfo, aValue); return tmp; } #include <AttributeHeader.hpp> /* * Define bound on index column in range scan. */ int NdbIndexScanOperation::setBound(const NdbColumnImpl* tAttrInfo, int type, const void* aValue) { if (theOperationType == OpenRangeScanRequest && (0 <= type && type <= 4)) { // insert bound type Uint32 currLen = theTotalNrOfKeyWordInSignal; Uint32 remaining = KeyInfo::DataLength - currLen; bool tDistrKey = tAttrInfo->m_distributionKey; Uint32 len = 0; if (aValue != NULL) if (! tAttrInfo->get_var_length(aValue, len)) { setErrorCodeAbort(4209); return -1; } // insert attribute header Uint32 tIndexAttrId = tAttrInfo->m_attrId; Uint32 sizeInWords = (len + 3) / 4; AttributeHeader ah(tIndexAttrId, sizeInWords << 2); const Uint32 ahValue = ah.m_value; const Uint32 align = (UintPtr(aValue) & 7); const bool aligned = (tDistrKey && type == BoundEQ) ? (align == 0) : (align & 3) == 0; const bool nobytes = (len & 0x3) == 0; const Uint32 totalLen = 2 + sizeInWords; Uint32 tupKeyLen = theTupKeyLen; if(remaining > totalLen && aligned && nobytes){ Uint32 * dst = theKEYINFOptr + currLen; * dst ++ = type; * dst ++ = ahValue; memcpy(dst, aValue, 4 * sizeInWords); theTotalNrOfKeyWordInSignal = currLen + totalLen; } else { if(!aligned || !nobytes){ Uint32 tempData[2000]; tempData[0] = type; tempData[1] = ahValue; tempData[2 + (len >> 2)] = 0; memcpy(tempData+2, aValue, len); insertBOUNDS(tempData, 2+sizeInWords); } else { Uint32 buf[2] = { type, ahValue }; insertBOUNDS(buf, 2); insertBOUNDS((Uint32*)aValue, sizeInWords); } } theTupKeyLen = tupKeyLen + totalLen; /** * Do sorted stuff */ /** * The primary keys for an ordered index is defined in the beginning * so it's safe to use [tIndexAttrId] * (instead of looping as is NdbOperation::equal_impl) */ if(type == BoundEQ && tDistrKey) { theNoOfTupKeyLeft--; return handle_distribution_key((Uint64*)aValue, sizeInWords); } return 0; } else { setErrorCodeAbort(4228); // XXX wrong code return -1; } } int NdbIndexScanOperation::insertBOUNDS(Uint32 * data, Uint32 sz){ Uint32 len; Uint32 remaining = KeyInfo::DataLength - theTotalNrOfKeyWordInSignal; Uint32 * dst = theKEYINFOptr + theTotalNrOfKeyWordInSignal; do { len = (sz < remaining ? sz : remaining); memcpy(dst, data, 4 * len); if(sz >= remaining){ NdbApiSignal* tCurr = theLastKEYINFO; tCurr->setLength(KeyInfo::MaxSignalLength); NdbApiSignal* tSignal = tCurr->next(); if(tSignal) ; else if((tSignal = theNdb->getSignal()) != 0) { tCurr->next(tSignal); tSignal->setSignal(GSN_KEYINFO); } else { goto error; } theLastKEYINFO = tSignal; theKEYINFOptr = dst = ((KeyInfo*)tSignal->getDataPtrSend())->keyData; remaining = KeyInfo::DataLength; sz -= len; data += len; } else { len = (KeyInfo::DataLength - remaining) + len; break; } } while(true); theTotalNrOfKeyWordInSignal = len; return 0; error: setErrorCodeAbort(4228); // XXX wrong code return -1; } Uint32 NdbIndexScanOperation::getKeyFromSCANTABREQ(Uint32* data, Uint32 size) { DBUG_ENTER("NdbIndexScanOperation::getKeyFromSCANTABREQ"); assert(size >= theTotalNrOfKeyWordInSignal); size = theTotalNrOfKeyWordInSignal; NdbApiSignal* tSignal = theSCAN_TABREQ->next(); Uint32 pos = 0; while (pos < size) { assert(tSignal != NULL); Uint32* tData = tSignal->getDataPtrSend(); Uint32 rem = size - pos; if (rem > KeyInfo::DataLength) rem = KeyInfo::DataLength; Uint32 i = 0; while (i < rem) { data[pos + i] = tData[KeyInfo::HeaderLength + i]; i++; } pos += rem; } DBUG_DUMP("key", (char*)data, size << 2); DBUG_RETURN(size); } int NdbIndexScanOperation::readTuples(LockMode lm, Uint32 scan_flags, Uint32 parallel) { const bool order_by = scan_flags & SF_OrderBy; const bool order_desc = scan_flags & SF_Descending; const bool read_range_no = scan_flags & SF_ReadRangeNo; int res = NdbScanOperation::readTuples(lm, scan_flags, 0); if(!res && read_range_no) { m_read_range_no = 1; Uint32 word = 0; AttributeHeader::init(&word, AttributeHeader::RANGE_NO, 0); if(insertATTRINFO(word) == -1) res = -1; } if(!res && order_by){ m_ordered = true; if (order_desc) { m_descending = true; ScanTabReq * req = CAST_PTR(ScanTabReq, theSCAN_TABREQ->getDataPtrSend()); ScanTabReq::setDescendingFlag(req->requestInfo, true); } Uint32 cnt = m_accessTable->getNoOfColumns() - 1; m_sort_columns = cnt; // -1 for NDB$NODE m_current_api_receiver = m_sent_receivers_count; m_api_receivers_count = m_sent_receivers_count; m_sort_columns = cnt; for(Uint32 i = 0; i<cnt; i++){ const NdbColumnImpl* key = m_accessTable->m_index->m_columns[i]; const NdbColumnImpl* col = m_currentTable->getColumn(key->m_keyInfoPos); NdbRecAttr* tmp = NdbScanOperation::getValue_impl(col, (char*)-1); UintPtr newVal = UintPtr(tmp); theTupleKeyDefined[i][0] = FAKE_PTR; theTupleKeyDefined[i][1] = (newVal & 0xFFFFFFFF); #if (SIZEOF_CHARP == 8) theTupleKeyDefined[i][2] = (newVal >> 32); #endif } } m_this_bound_start = 0; m_first_bound_word = theKEYINFOptr; return res; } void NdbIndexScanOperation::fix_get_values(){ /** * Loop through all getValues and set buffer pointer to "API" pointer */ NdbRecAttr * curr = theReceiver.theFirstRecAttr; Uint32 cnt = m_accessTable->getNoOfColumns() - 1; assert(cnt < NDB_MAX_NO_OF_ATTRIBUTES_IN_KEY); const NdbIndexImpl * idx = m_accessTable->m_index; const NdbTableImpl * tab = m_currentTable; for(Uint32 i = 0; i<cnt; i++){ Uint32 val = theTupleKeyDefined[i][0]; switch(val){ case FAKE_PTR: curr->setup(curr->m_column, 0); case API_PTR: curr = curr->next(); break; case SETBOUND_EQ: break; #ifdef VM_TRACE default: abort(); #endif } } } int NdbIndexScanOperation::compare(Uint32 skip, Uint32 cols, const NdbReceiver* t1, const NdbReceiver* t2){ NdbRecAttr * r1 = t1->m_rows[t1->m_current_row]; NdbRecAttr * r2 = t2->m_rows[t2->m_current_row]; r1 = (skip ? r1->next() : r1); r2 = (skip ? r2->next() : r2); const int jdir = 1 - 2 * (int)m_descending; assert(jdir == 1 || jdir == -1); while(cols > 0){ Uint32 * d1 = (Uint32*)r1->aRef(); Uint32 * d2 = (Uint32*)r2->aRef(); unsigned r1_null = r1->isNULL(); if((r1_null ^ (unsigned)r2->isNULL())){ return (r1_null ? -1 : 1) * jdir; } const NdbColumnImpl & col = NdbColumnImpl::getImpl(* r1->m_column); Uint32 len1 = r1->get_size_in_bytes(); Uint32 len2 = r2->get_size_in_bytes(); if(!r1_null){ const NdbSqlUtil::Type& sqlType = NdbSqlUtil::getType(col.m_type); int r = (*sqlType.m_cmp)(col.m_cs, d1, len1, d2, len2, true); if(r){ assert(r != NdbSqlUtil::CmpUnknown); return r * jdir; } } cols--; r1 = r1->next(); r2 = r2->next(); } return 0; } int NdbIndexScanOperation::next_result_ordered(bool fetchAllowed, bool forceSend){ m_curr_row = 0; Uint32 u_idx = 0, u_last = 0; Uint32 s_idx = m_current_api_receiver; // first sorted Uint32 s_last = theParallelism; // last sorted NdbReceiver** arr = m_api_receivers; NdbReceiver* tRec = arr[s_idx]; if(DEBUG_NEXT_RESULT) ndbout_c("nextOrderedResult(%d) nextResult: %d", fetchAllowed, (s_idx < s_last ? tRec->nextResult() : 0)); if(DEBUG_NEXT_RESULT) ndbout_c("u=[%d %d] s=[%d %d]", u_idx, u_last, s_idx, s_last); bool fetchNeeded = (s_idx == s_last) || !tRec->nextResult(); if(fetchNeeded){ if(fetchAllowed){ if(DEBUG_NEXT_RESULT) ndbout_c("performing fetch..."); TransporterFacade* tp = TransporterFacade::instance(); /* The PollGuard has an implicit call of unlock_and_signal through the ~PollGuard method. This method is called implicitly by the compiler in all places where the object is out of context due to a return, break, continue or simply end of statement block */ PollGuard poll_guard(tp, &theNdb->theImpl->theWaiter, theNdb->theNdbBlockNumber); if(theError.code) return -1; Uint32 seq = theNdbCon->theNodeSequence; Uint32 nodeId = theNdbCon->theDBnode; if(seq == tp->getNodeSequence(nodeId) && !send_next_scan_ordered(s_idx)){ Uint32 tmp = m_sent_receivers_count; s_idx = m_current_api_receiver; while(m_sent_receivers_count > 0 && !theError.code){ int ret_code= poll_guard.wait_scan(WAITFOR_SCAN_TIMEOUT, nodeId, forceSend); if (ret_code == 0 && seq == tp->getNodeSequence(nodeId)) { continue; } if(DEBUG_NEXT_RESULT) ndbout_c("return -1"); setErrorCode(4028); return -1; } if(theError.code){ setErrorCode(theError.code); if(DEBUG_NEXT_RESULT) ndbout_c("return -1"); return -1; } u_idx = 0; u_last = m_conf_receivers_count; m_conf_receivers_count = 0; memcpy(arr, m_conf_receivers, u_last * sizeof(char*)); if(DEBUG_NEXT_RESULT) ndbout_c("sent: %d recv: %d", tmp, u_last); } else { setErrorCode(4028); return -1; } } else { if(DEBUG_NEXT_RESULT) ndbout_c("return 2"); return 2; } } else { u_idx = s_idx; u_last = s_idx + 1; s_idx++; } if(DEBUG_NEXT_RESULT) ndbout_c("u=[%d %d] s=[%d %d]", u_idx, u_last, s_idx, s_last); Uint32 cols = m_sort_columns + m_read_range_no; Uint32 skip = m_keyInfo; while(u_idx < u_last){ u_last--; tRec = arr[u_last]; // Do binary search instead to find place Uint32 place = s_idx; for(; place < s_last; place++){ if(compare(skip, cols, tRec, arr[place]) <= 0){ break; } } if(place != s_idx){ if(DEBUG_NEXT_RESULT) ndbout_c("memmove(%d, %d, %d)", s_idx-1, s_idx, (place - s_idx)); memmove(arr+s_idx-1, arr+s_idx, sizeof(char*)*(place - s_idx)); } if(DEBUG_NEXT_RESULT) ndbout_c("putting %d @ %d", u_last, place - 1); m_api_receivers[place-1] = tRec; s_idx--; } if(DEBUG_NEXT_RESULT) ndbout_c("u=[%d %d] s=[%d %d]", u_idx, u_last, s_idx, s_last); m_current_api_receiver = s_idx; if(DEBUG_NEXT_RESULT) for(Uint32 i = s_idx; i<s_last; i++) ndbout_c("%p", arr[i]); tRec = m_api_receivers[s_idx]; if(s_idx < s_last && tRec->nextResult()){ m_curr_row = tRec->copyout(theReceiver); if(DEBUG_NEXT_RESULT) ndbout_c("return 0"); return 0; } theError.code = -1; if(DEBUG_NEXT_RESULT) ndbout_c("return 1"); return 1; } int NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx) { if(idx == theParallelism) return 0; NdbReceiver* tRec = m_api_receivers[idx]; NdbApiSignal tSignal(theNdb->theMyRef); tSignal.setSignal(GSN_SCAN_NEXTREQ); Uint32 last = m_sent_receivers_count; Uint32* theData = tSignal.getDataPtrSend(); Uint32* prep_array = theData + 4; m_current_api_receiver = idx + 1; if((prep_array[0] = tRec->m_tcPtrI) == RNIL) { if(DEBUG_NEXT_RESULT) ndbout_c("receiver completed, don't send"); return 0; } theData[0] = theNdbCon->theTCConPtr; theData[1] = 0; Uint64 transId = theNdbCon->theTransactionId; theData[2] = transId; theData[3] = (Uint32) (transId >> 32); /** * Prepare ops */ m_sent_receivers[last] = tRec; tRec->m_list_index = last; tRec->prepareSend(); m_sent_receivers_count = last + 1; Uint32 nodeId = theNdbCon->theDBnode; TransporterFacade * tp = TransporterFacade::instance(); tSignal.setLength(4+1); int ret= tp->sendSignal(&tSignal, nodeId); return ret; } int NdbScanOperation::close_impl(TransporterFacade* tp, bool forceSend, PollGuard *poll_guard) { Uint32 seq = theNdbCon->theNodeSequence; Uint32 nodeId = theNdbCon->theDBnode; if(seq != tp->getNodeSequence(nodeId)) { theNdbCon->theReleaseOnClose = true; return -1; } /** * Wait for outstanding */ while(theError.code == 0 && m_sent_receivers_count) { int return_code= poll_guard->wait_scan(WAITFOR_SCAN_TIMEOUT, nodeId, false); switch(return_code){ case 0: break; case -1: setErrorCode(4008); case -2: m_api_receivers_count = 0; m_conf_receivers_count = 0; m_sent_receivers_count = 0; theNdbCon->theReleaseOnClose = true; return -1; } } if(theError.code) { m_api_receivers_count = 0; m_current_api_receiver = m_ordered ? theParallelism : 0; } /** * move all conf'ed into api * so that send_next_scan can check if they needs to be closed */ Uint32 api = m_api_receivers_count; Uint32 conf = m_conf_receivers_count; if(m_ordered) { /** * Ordered scan, keep the m_api_receivers "to the right" */ memmove(m_api_receivers, m_api_receivers+m_current_api_receiver, (theParallelism - m_current_api_receiver) * sizeof(char*)); api = (theParallelism - m_current_api_receiver); m_api_receivers_count = api; } if(DEBUG_NEXT_RESULT) ndbout_c("close_impl: [order api conf sent curr parr] %d %d %d %d %d %d", m_ordered, api, conf, m_sent_receivers_count, m_current_api_receiver, theParallelism); if(api+conf) { /** * There's something to close * setup m_api_receivers (for send_next_scan) */ memcpy(m_api_receivers+api, m_conf_receivers, conf * sizeof(char*)); m_api_receivers_count = api + conf; m_conf_receivers_count = 0; } // Send close scan if(send_next_scan(api+conf, true) == -1) { theNdbCon->theReleaseOnClose = true; return -1; } /** * wait for close scan conf */ while(m_sent_receivers_count+m_api_receivers_count+m_conf_receivers_count) { int return_code= poll_guard->wait_scan(WAITFOR_SCAN_TIMEOUT, nodeId, forceSend); switch(return_code){ case 0: break; case -1: setErrorCode(4008); case -2: m_api_receivers_count = 0; m_conf_receivers_count = 0; m_sent_receivers_count = 0; theNdbCon->theReleaseOnClose = true; return -1; } } return 0; } void NdbScanOperation::reset_receivers(Uint32 parallell, Uint32 ordered){ for(Uint32 i = 0; i<parallell; i++){ m_receivers[i]->m_list_index = i; m_prepared_receivers[i] = m_receivers[i]->getId(); m_sent_receivers[i] = m_receivers[i]; m_conf_receivers[i] = 0; m_api_receivers[i] = 0; m_receivers[i]->prepareSend(); } m_api_receivers_count = 0; m_current_api_receiver = 0; m_sent_receivers_count = 0; m_conf_receivers_count = 0; } int NdbScanOperation::restart(bool forceSend) { TransporterFacade* tp = TransporterFacade::instance(); /* The PollGuard has an implicit call of unlock_and_signal through the ~PollGuard method. This method is called implicitly by the compiler in all places where the object is out of context due to a return, break, continue or simply end of statement block */ PollGuard poll_guard(tp, &theNdb->theImpl->theWaiter, theNdb->theNdbBlockNumber); Uint32 nodeId = theNdbCon->theDBnode; { int res; if((res= close_impl(tp, forceSend, &poll_guard))) { return res; } } /** * Reset receivers */ reset_receivers(theParallelism, m_ordered); theError.code = 0; if (doSendScan(nodeId) == -1) return -1; return 0; } int NdbIndexScanOperation::reset_bounds(bool forceSend){ int res; { TransporterFacade* tp = TransporterFacade::instance(); /* The PollGuard has an implicit call of unlock_and_signal through the ~PollGuard method. This method is called implicitly by the compiler in all places where the object is out of context due to a return, break, continue or simply end of statement block */ PollGuard poll_guard(tp, &theNdb->theImpl->theWaiter, theNdb->theNdbBlockNumber); res= close_impl(tp, forceSend, &poll_guard); } if(!res) { theError.code = 0; reset_receivers(theParallelism, m_ordered); theLastKEYINFO = theSCAN_TABREQ->next(); theKEYINFOptr = ((KeyInfo*)theLastKEYINFO->getDataPtrSend())->keyData; theTupKeyLen = 0; theTotalNrOfKeyWordInSignal = 0; theNoOfTupKeyLeft = m_accessTable->m_noOfDistributionKeys; theDistrKeyIndicator_ = 0; m_this_bound_start = 0; m_first_bound_word = theKEYINFOptr; m_transConnection ->remove_list((NdbOperation*&)m_transConnection->m_firstExecutedScanOp, this); m_transConnection->define_scan_op(this); return 0; } return res; } int NdbIndexScanOperation::end_of_bound(Uint32 no) { if(no < (1 << 13)) // Only 12-bits no of ranges { Uint32 bound_head = * m_first_bound_word; bound_head |= (theTupKeyLen - m_this_bound_start) << 16 | (no << 4); * m_first_bound_word = bound_head; m_first_bound_word = theKEYINFOptr + theTotalNrOfKeyWordInSignal;; m_this_bound_start = theTupKeyLen; return 0; } return -1; } int NdbIndexScanOperation::get_range_no() { NdbRecAttr* tRecAttr = m_curr_row; if(m_read_range_no && tRecAttr) { if(m_keyInfo) tRecAttr = tRecAttr->next(); Uint32 ret = *(Uint32*)tRecAttr->aRef(); return ret; } return -1; }