SignalSender.cpp 7.05 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252
/* 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 "SignalSender.hpp"
#include <NdbSleep.h>
#include <SignalLoggerManager.hpp>
#include <signaldata/NFCompleteRep.hpp>
#include <signaldata/NodeFailRep.hpp>

SimpleSignal::SimpleSignal(bool dealloc){
  memset(this, 0, sizeof(* this));
  deallocSections = dealloc;
}

SimpleSignal::~SimpleSignal(){
  if(!deallocSections)
    return;
  if(ptr[0].p != 0) delete []ptr[0].p;
  if(ptr[1].p != 0) delete []ptr[1].p;
  if(ptr[2].p != 0) delete []ptr[2].p;
}

void 
SimpleSignal::set(class SignalSender& ss,
		  Uint8  trace, Uint16 recBlock, Uint16 gsn, Uint32 len){
  
  header.theTrace                = trace;
  header.theReceiversBlockNumber = recBlock;
  header.theVerId_signalNumber   = gsn;
  header.theLength               = len;
  header.theSendersBlockRef      = refToBlock(ss.getOwnRef());
}

void
SimpleSignal::print(FILE * out){
  fprintf(out, "---- Signal ----------------\n");
  SignalLoggerManager::printSignalHeader(out, header, 0, 0, false);
  SignalLoggerManager::printSignalData(out, header, theData);
  for(Uint32 i = 0; i<header.m_noOfSections; i++){
    Uint32 len = ptr[i].sz;
    fprintf(out, " --- Section %d size=%d ---\n", i, len);
    Uint32 * signalData = ptr[i].p;
    while(len >= 7){
      fprintf(out, 
              " H\'%.8x H\'%.8x H\'%.8x H\'%.8x H\'%.8x H\'%.8x H\'%.8x\n",
              signalData[0], signalData[1], signalData[2], signalData[3], 
              signalData[4], signalData[5], signalData[6]);
      len -= 7;
      signalData += 7;
    }
    if(len > 0){
      fprintf(out, " H\'%.8x", signalData[0]);
      for(Uint32 i = 1; i<len; i++)
        fprintf(out, " H\'%.8x", signalData[i]);
      fprintf(out, "\n");
    }
  }
}

SignalSender::SignalSender(TransporterFacade *facade)
  : m_lock(0)
{
  m_cond = NdbCondition_Create();
  theFacade = facade;
  m_blockNo = theFacade->open(this, execSignal, execNodeStatus);
  assert(m_blockNo > 0);
}

SignalSender::~SignalSender(){
  int i;
  if (m_lock)
    unlock();
  theFacade->close(m_blockNo,0);
  // free these _after_ closing theFacade to ensure that
  // we delete all signals
  for (i= m_jobBuffer.size()-1; i>= 0; i--)
    delete m_jobBuffer[i];
  for (i= m_usedBuffer.size()-1; i>= 0; i--)
    delete m_usedBuffer[i];
  NdbCondition_Destroy(m_cond);
}

int SignalSender::lock()
{
  if (NdbMutex_Lock(theFacade->theMutexPtr))
    return -1;
  m_lock= 1;
  return 0;
}

int SignalSender::unlock()
{
  if (NdbMutex_Unlock(theFacade->theMutexPtr))
    return -1;
  m_lock= 0;
  return 0;
}

Uint32
SignalSender::getOwnRef() const {
  return numberToRef(m_blockNo, theFacade->ownId());
}

Uint32
SignalSender::getAliveNode() const{
  return theFacade->get_an_alive_node();
}

const ClusterMgr::Node & 
SignalSender::getNodeInfo(Uint16 nodeId) const {
  return theFacade->theClusterMgr->getNodeInfo(nodeId);
}

Uint32
SignalSender::getNoOfConnectedNodes() const {
  return theFacade->theClusterMgr->getNoOfConnectedNodes();
}

SendStatus
SignalSender::sendSignal(Uint16 nodeId, const SimpleSignal * s){
  return theFacade->theTransporterRegistry->prepareSend(&s->header,
							1, // JBB
							&s->theData[0],
							nodeId, 
							&s->ptr[0]);
}

template<class T>
SimpleSignal *
SignalSender::waitFor(Uint32 timeOutMillis, T & t)
{
  SimpleSignal * s = t.check(m_jobBuffer);
  if(s != 0){
    return s;
  }
  
  NDB_TICKS now = NdbTick_CurrentMillisecond();
  NDB_TICKS stop = now + timeOutMillis;
  Uint32 wait = (timeOutMillis == 0 ? 10 : timeOutMillis);
  do {
    NdbCondition_WaitTimeout(m_cond,
			     theFacade->theMutexPtr, 
			     wait);
    
    
    SimpleSignal * s = t.check(m_jobBuffer);
    if(s != 0){
      m_usedBuffer.push_back(s);
      return s;
    }
    
    now = NdbTick_CurrentMillisecond();
    wait = (timeOutMillis == 0 ? 10 : stop - now);
  } while(stop > now || timeOutMillis == 0);
  
  return 0;
} 

class WaitForAny {
public:
  SimpleSignal * check(Vector<SimpleSignal*> & m_jobBuffer){
    if(m_jobBuffer.size() > 0){
      SimpleSignal * s = m_jobBuffer[0];
      m_jobBuffer.erase(0);
      return s;
    }
    return 0;
  }
};
  
SimpleSignal *
SignalSender::waitFor(Uint32 timeOutMillis){
  
  WaitForAny w;
  return waitFor(timeOutMillis, w);
}

class WaitForNode {
public:
  Uint32 m_nodeId;
  SimpleSignal * check(Vector<SimpleSignal*> & m_jobBuffer){
    Uint32 len = m_jobBuffer.size();
    for(Uint32 i = 0; i<len; i++){
      if(refToNode(m_jobBuffer[i]->header.theSendersBlockRef) == m_nodeId){
	SimpleSignal * s = m_jobBuffer[i];
	m_jobBuffer.erase(i);
	return s;
      }
    }
    return 0;
  }
};

SimpleSignal *
SignalSender::waitFor(Uint16 nodeId, Uint32 timeOutMillis){
  
  WaitForNode w;
  w.m_nodeId = nodeId;
  return waitFor(timeOutMillis, w);
}

#include <NdbApiSignal.hpp>

void
SignalSender::execSignal(void* signalSender, 
			 NdbApiSignal* signal, 
			 class LinearSectionPtr ptr[3]){
  SimpleSignal * s = new SimpleSignal(true);
  s->header = * signal;
  memcpy(&s->theData[0], signal->getDataPtr(), 4 * s->header.theLength);
  for(Uint32 i = 0; i<s->header.m_noOfSections; i++){
    s->ptr[i].p = new Uint32[ptr[i].sz];
    s->ptr[i].sz = ptr[i].sz;
    memcpy(s->ptr[i].p, ptr[i].p, 4 * ptr[i].sz);
  }
  SignalSender * ss = (SignalSender*)signalSender;
  ss->m_jobBuffer.push_back(s);
  NdbCondition_Signal(ss->m_cond);
}
  
void 
SignalSender::execNodeStatus(void* signalSender, 
			     Uint32 nodeId, 
			     bool alive, 
			     bool nfCompleted){
  if (alive) {
    // node connected
    return;
  }

  SimpleSignal * s = new SimpleSignal(true);
  SignalSender * ss = (SignalSender*)signalSender;

  // node disconnected
  if(nfCompleted)
  {
    // node shutdown complete
    s->header.theVerId_signalNumber = GSN_NF_COMPLETEREP;
    NFCompleteRep *rep = (NFCompleteRep *)s->getDataPtrSend();
253 254
    rep->blockNo = 0;
    rep->nodeId = 0;
255
    rep->failedNodeId = nodeId;
256 257
    rep->unused = 0;
    rep->from = 0;
258 259 260 261 262 263
  }
  else
  {
    // node failure
    s->header.theVerId_signalNumber = GSN_NODE_FAILREP;
    NodeFailRep *rep = (NodeFailRep *)s->getDataPtrSend();
264 265 266 267 268
    rep->failNo = 0;
    rep->masterNodeId = 0;
    rep->noOfNodes = 1;
    NodeBitmask::clear(rep->theNodes);
    NodeBitmask::set(rep->theNodes,nodeId);
269 270 271 272 273 274 275 276
  }

  ss->m_jobBuffer.push_back(s);
  NdbCondition_Signal(ss->m_cond);
}

template SimpleSignal* SignalSender::waitFor<WaitForNode>(unsigned, WaitForNode&);
template SimpleSignal* SignalSender::waitFor<WaitForAny>(unsigned, WaitForAny&);
277
template class Vector<SimpleSignal*>;