dbdict.cpp

mysql-5.0.22.tar.gz源码包

  tablePtr.p->noOfAttributes = ZNIL;
  tablePtr.p->noOfNullAttr = 0;
  tablePtr.p->frmLen = 0;
  memset(tablePtr.p->frmData, 0, sizeof(tablePtr.p->frmData));
  /*
    tablePtr.p->lh3PageIndexBits = 0;
    tablePtr.p->lh3DistrBits = 0;
    tablePtr.p->lh3PageBits = 6;
  */
  tablePtr.p->kValue = 6;
  tablePtr.p->localKeyLen = 1;
  tablePtr.p->maxLoadFactor = 80;
  tablePtr.p->minLoadFactor = 70;
  tablePtr.p->noOfPrimkey = 1;
  tablePtr.p->tupKeyLength = 1;
  tablePtr.p->storedTable = true;
  tablePtr.p->tableType = DictTabInfo::UserTable;
  tablePtr.p->primaryTableId = RNIL;
  // volatile elements
  tablePtr.p->indexState = TableRecord::IS_UNDEFINED;
  tablePtr.p->insertTriggerId = RNIL;
  tablePtr.p->updateTriggerId = RNIL;
  tablePtr.p->deleteTriggerId = RNIL;
  tablePtr.p->customTriggerId = RNIL;
  tablePtr.p->buildTriggerId = RNIL;
  tablePtr.p->indexLocal = 0;
}//Dbdict::initialiseTableRecord()

void Dbdict::initTriggerRecords()
{
  TriggerRecordPtr triggerPtr;
  while (1) {
    jam();
    refresh_watch_dog();
    c_triggerRecordPool.seize(triggerPtr);
    if (triggerPtr.i == RNIL) {
      jam();
      break;
    }//if
    initialiseTriggerRecord(triggerPtr);
  }//while
}

void Dbdict::initialiseTriggerRecord(TriggerRecordPtr triggerPtr)
{
  triggerPtr.p->triggerState = TriggerRecord::TS_NOT_DEFINED;
  triggerPtr.p->triggerLocal = 0;
  memset(triggerPtr.p->triggerName, 0, sizeof(triggerPtr.p->triggerName));
  triggerPtr.p->triggerId = RNIL;
  triggerPtr.p->tableId = RNIL;
  triggerPtr.p->triggerType = (TriggerType::Value)~0;
  triggerPtr.p->triggerActionTime = (TriggerActionTime::Value)~0;
  triggerPtr.p->triggerEvent = (TriggerEvent::Value)~0;
  triggerPtr.p->monitorReplicas = false;
  triggerPtr.p->monitorAllAttributes = false;
  triggerPtr.p->attributeMask.clear();
  triggerPtr.p->indexId = RNIL;
}

Uint32 Dbdict::getFsConnRecord() 
{
  FsConnectRecordPtr fsPtr;
  c_fsConnectRecordPool.seize(fsPtr);
  ndbrequire(fsPtr.i != RNIL);
  fsPtr.p->filePtr = (Uint32)-1;
  fsPtr.p->ownerPtr = RNIL;
  fsPtr.p->fsState = FsConnectRecord::IDLE;
  return fsPtr.i;
}//Dbdict::getFsConnRecord()

Uint32 Dbdict::getFreeTableRecord(Uint32 primaryTableId) 
{
  Uint32 minId = (primaryTableId == RNIL ? 0 : primaryTableId + 1);
  TableRecordPtr tablePtr;
  TableRecordPtr firstTablePtr;
  bool firstFound = false;
  Uint32 tabSize = c_tableRecordPool.getSize();
  for (tablePtr.i = minId; tablePtr.i < tabSize ; tablePtr.i++) {
    jam();
    c_tableRecordPool.getPtr(tablePtr);
    if (tablePtr.p->tabState == TableRecord::NOT_DEFINED) {
      jam();
      initialiseTableRecord(tablePtr);
      tablePtr.p->tabState = TableRecord::DEFINING;
      firstFound = true;
      firstTablePtr.i = tablePtr.i;
      firstTablePtr.p = tablePtr.p;
      break;
    }//if
  }//for
  if (!firstFound) {
    jam();
    return RNIL;
  }//if
#ifdef HAVE_TABLE_REORG
  bool secondFound = false;
  for (tablePtr.i = firstTablePtr.i + 1; tablePtr.i < tabSize ; tablePtr.i++) {
    jam();
    c_tableRecordPool.getPtr(tablePtr);
    if (tablePtr.p->tabState == TableRecord::NOT_DEFINED) {
      jam();
      initialiseTableRecord(tablePtr);
      tablePtr.p->tabState = TableRecord::REORG_TABLE_PREPARED;
      tablePtr.p->secondTable = firstTablePtr.i;
      firstTablePtr.p->secondTable = tablePtr.i;
      secondFound = true;
      break;
    }//if
  }//for
  if (!secondFound) {
    jam();
    firstTablePtr.p->tabState = TableRecord::NOT_DEFINED;
    return RNIL;
  }//if
#endif
  return firstTablePtr.i;
}//Dbdict::getFreeTableRecord()

Uint32 Dbdict::getFreeTriggerRecord()
{
  const Uint32 size = c_triggerRecordPool.getSize();
  TriggerRecordPtr triggerPtr;
  for (triggerPtr.i = 0; triggerPtr.i < size; triggerPtr.i++) {
    jam();
    c_triggerRecordPool.getPtr(triggerPtr);
    if (triggerPtr.p->triggerState == TriggerRecord::TS_NOT_DEFINED) {
      jam();
      initialiseTriggerRecord(triggerPtr);
      return triggerPtr.i;
    }
  }
  return RNIL;
}

bool
Dbdict::getNewAttributeRecord(TableRecordPtr tablePtr, 
			      AttributeRecordPtr & attrPtr) 
{
  c_attributeRecordPool.seize(attrPtr);
  if(attrPtr.i == RNIL){
    return false;
  }
  
  memset(attrPtr.p->attributeName, 0, sizeof(attrPtr.p->attributeName));
  attrPtr.p->attributeDescriptor = 0x00012255; //Default value
  attrPtr.p->attributeId = ZNIL;
  attrPtr.p->nextAttrInTable = RNIL;
  attrPtr.p->tupleKey = 0;
  memset(attrPtr.p->defaultValue, 0, sizeof(attrPtr.p->defaultValue));
  
  /* ---------------------------------------------------------------- */
  // A free attribute record has been acquired. We will now link it
  // to the table record.
  /* ---------------------------------------------------------------- */
  if (tablePtr.p->lastAttribute == RNIL) {
    jam();
    tablePtr.p->firstAttribute = attrPtr.i;
  } else {
    jam();
    AttributeRecordPtr lastAttrPtr;
    c_attributeRecordPool.getPtr(lastAttrPtr, tablePtr.p->lastAttribute);
    lastAttrPtr.p->nextAttrInTable = attrPtr.i;
  }//if
  tablePtr.p->lastAttribute = attrPtr.i;
  return true;
}//Dbdict::getNewAttributeRecord()

/* **************************************************************** */
/* ---------------------------------------------------------------- */
/* MODULE:          START/RESTART HANDLING ------------------------ */
/* ---------------------------------------------------------------- */
/*                                                                  */
/* This module contains the code that is common for all             */
/* start/restart types.                                             */
/* ---------------------------------------------------------------- */
/* **************************************************************** */

/* ---------------------------------------------------------------- */
// This is sent as the first signal during start/restart.
/* ---------------------------------------------------------------- */
void Dbdict::execSTTOR(Signal* signal) 
{
  jamEntry();
  c_startPhase = signal->theData[1];
  switch (c_startPhase) {
  case 1:
    break;
  case 3:
    c_restartType = signal->theData[7];         /* valid if 3 */
    ndbrequire(c_restartType == NodeState::ST_INITIAL_START ||
               c_restartType == NodeState::ST_SYSTEM_RESTART ||
               c_restartType == NodeState::ST_INITIAL_NODE_RESTART ||
               c_restartType == NodeState::ST_NODE_RESTART);
    break;
  }
  sendSTTORRY(signal);
}//execSTTOR()

void Dbdict::sendSTTORRY(Signal* signal)
{
  signal->theData[0] = 0;       /* garbage SIGNAL KEY */
  signal->theData[1] = 0;       /* garbage SIGNAL VERSION NUMBER  */
  signal->theData[2] = 0;       /* garbage */
  signal->theData[3] = 1;       /* first wanted start phase */
  signal->theData[4] = 3;       /* get type of start */
  signal->theData[5] = ZNOMOREPHASES;
  sendSignal(NDBCNTR_REF, GSN_STTORRY, signal, 6, JBB);
}

/* ---------------------------------------------------------------- */
// We receive information about sizes of records.
/* ---------------------------------------------------------------- */
void Dbdict::execREAD_CONFIG_REQ(Signal* signal) 
{
  const ReadConfigReq * req = (ReadConfigReq*)signal->getDataPtr();
  Uint32 ref = req->senderRef;
  Uint32 senderData = req->senderData;
  ndbrequire(req->noOfParameters == 0);

  jamEntry();
 
  const ndb_mgm_configuration_iterator * p = 
    theConfiguration.getOwnConfigIterator();
  ndbrequire(p != 0);
  
  Uint32 attributesize, tablerecSize;
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_DICT_ATTRIBUTE,&attributesize));
  ndbrequire(!ndb_mgm_get_int_parameter(p, CFG_DICT_TABLE, &tablerecSize));

  c_attributeRecordPool.setSize(attributesize);
  c_attributeRecordHash.setSize(64);
  c_fsConnectRecordPool.setSize(ZFS_CONNECT_SIZE);
  c_nodes.setSize(MAX_NODES);
  c_pageRecordArray.setSize(ZNUMBER_OF_PAGES);
  c_schemaPageRecordArray.setSize(2 * NDB_SF_MAX_PAGES);
  c_tableRecordPool.setSize(tablerecSize);
  c_tableRecordHash.setSize(tablerecSize);
  g_key_descriptor_pool.setSize(tablerecSize);
  c_triggerRecordPool.setSize(c_maxNoOfTriggers);
  c_triggerRecordHash.setSize(c_maxNoOfTriggers);
  c_opRecordPool.setSize(256);   // XXX need config params
  c_opCreateTable.setSize(8);
  c_opDropTable.setSize(8);
  c_opCreateIndex.setSize(8);
  c_opCreateEvent.setSize(8);
  c_opSubEvent.setSize(8);
  c_opDropEvent.setSize(8);
  c_opSignalUtil.setSize(8);
  c_opDropIndex.setSize(8);
  c_opAlterIndex.setSize(8);
  c_opBuildIndex.setSize(8);
  c_opCreateTrigger.setSize(8);
  c_opDropTrigger.setSize(8);
  c_opAlterTrigger.setSize(8);
  
  // Initialize schema file copies
  c_schemaFile[0].schemaPage =
    (SchemaFile*)c_schemaPageRecordArray.getPtr(0 * NDB_SF_MAX_PAGES);
  c_schemaFile[0].noOfPages = 0;
  c_schemaFile[1].schemaPage =
    (SchemaFile*)c_schemaPageRecordArray.getPtr(1 * NDB_SF_MAX_PAGES);
  c_schemaFile[1].noOfPages = 0;

  // Initialize BAT for interface to file system
  NewVARIABLE* bat = allocateBat(2);
  bat[0].WA = &c_schemaPageRecordArray.getPtr(0)->word[0];
  bat[0].nrr = 2 * NDB_SF_MAX_PAGES;
  bat[0].ClusterSize = NDB_SF_PAGE_SIZE;
  bat[0].bits.q = NDB_SF_PAGE_SIZE_IN_WORDS_LOG2;
  bat[0].bits.v = 5;  // 32 bits per element
  bat[1].WA = &c_pageRecordArray.getPtr(0)->word[0];
  bat[1].nrr = ZNUMBER_OF_PAGES;
  bat[1].ClusterSize = ZSIZE_OF_PAGES_IN_WORDS * 4;
  bat[1].bits.q = ZLOG_SIZE_OF_PAGES_IN_WORDS; // 2**13 = 8192 elements
  bat[1].bits.v = 5;  // 32 bits per element

  initCommonData();
  initRecords();

  ReadConfigConf * conf = (ReadConfigConf*)signal->getDataPtrSend();
  conf->senderRef = reference();
  conf->senderData = senderData;
  sendSignal(ref, GSN_READ_CONFIG_CONF, signal, 
	     ReadConfigConf::SignalLength, JBB);
}//execSIZEALT_REP()

/* ---------------------------------------------------------------- */
// Start phase signals sent by CNTR. We reply with NDB_STTORRY when
// we completed this phase.
/* ---------------------------------------------------------------- */
void Dbdict::execNDB_STTOR(Signal* signal) 
{
  jamEntry();
  c_startPhase = signal->theData[2];
  const Uint32 restartType = signal->theData[3];
  if (restartType == NodeState::ST_INITIAL_START) {
    jam();
    c_initialStart = true;
  } else if (restartType == NodeState::ST_SYSTEM_RESTART) {
    jam();
    c_systemRestart = true;
  } else if (restartType == NodeState::ST_INITIAL_NODE_RESTART) {
    jam();
    c_initialNodeRestart = true;
  } else if (restartType == NodeState::ST_NODE_RESTART) {
    jam();
    c_nodeRestart = true;
  } else {
    ndbrequire(false);
  }//if
  switch (c_startPhase) {
  case 1:
    jam();
    initSchemaFile(signal);
    break;
  case 3:
    jam();
    signal->theData[0] = reference();
    sendSignal(NDBCNTR_REF, GSN_READ_NODESREQ, signal, 1, JBB);
    break;
  case 6:
    jam();
    c_initialStart = false;
    c_systemRestart = false;
    c_initialNodeRestart = false;
    c_nodeRestart = false;
    sendNDB_STTORRY(signal);
    break;
  case 7:
    // uses c_restartType
    if(restartType == NodeState::ST_SYSTEM_RESTART &&
       c_masterNodeId == getOwnNodeId()){
      rebuildIndexes(signal, 0);
      return;
    }
    sendNDB_STTORRY(signal);
    break;
  default:
    jam();
    sendNDB_STTORRY(signal);
    break;
  }//switch
}//execNDB_STTOR()

void Dbdict::sendNDB_STTORRY(Signal* signal) 
{
  signal->theData[0] = reference();
  sendSignal(NDBCNTR_REF, GSN_NDB_STTORRY, signal, 1, JBB);
  return;
}//sendNDB_STTORRY()

/* ---------------------------------------------------------------- */
// We receive the information about which nodes that are up and down.
/* ---------------------------------------------------------------- */
void Dbdict::execREAD_NODESCONF(Signal* signal) 
{
  jamEntry();

  ReadNodesConf * const readNodes = (ReadNodesConf *)&signal->theData[0];
  c_numberNode   = readNodes->noOfNodes;
  c_masterNodeId = readNodes->masterNodeId;

  c_noNodesFailed = 0;
  c_aliveNodes.clear();
  for (unsigned i = 1; i < MAX_NDB_NODES; i++) {
    jam();
    NodeRecordPtr nodePtr;
    c_nodes.getPtr(nodePtr, i);

    if (NodeBitmask::get(readNodes->allNodes, i)) {
      jam();
      nodePtr.p->nodeState = NodeRecord::NDB_NODE_ALIVE;
      if (NodeBitmask::get(readNodes->inactiveNodes, i)) {
	jam();
	/**-------------------------------------------------------------------
	 *
	 * THIS NODE IS DEFINED IN THE CLUSTER BUT IS NOT ALIVE CU