ndboperationexec.cpp

mysql-5.0.22.tar.gz源码包

//-------------------------------------------------------------
// Perform the Attrinfo packing in the TCKEYREQ signal started
// above.
//-------------------------------------------------------------
  Uint32* tAIDataPtr = &tOptionalDataPtr[tAttrInfoIndex];
  Tdata1 = tcKeyReq->attrInfo[0];
  Tdata2 = tcKeyReq->attrInfo[1];
  Tdata3 = tcKeyReq->attrInfo[2];
  Tdata4 = tcKeyReq->attrInfo[3];
  Tdata5 = tcKeyReq->attrInfo[4];

  theTCREQ->setLength(tcKeyReq->getAIInTcKeyReq(tReqInfo) +
                      tAttrInfoIndex + TcKeyReq::StaticLength);

  tAIDataPtr[0] = Tdata1;
  tAIDataPtr[1] = Tdata2;
  tAIDataPtr[2] = Tdata3;
  tAIDataPtr[3] = Tdata4;
  tAIDataPtr[4] = Tdata5;

/***************************************************
*  Send the ATTRINFO signals.
***************************************************/
  if (tTotalCurrAI_Len > 5) {
    // Set the last signal's length.
    NdbApiSignal* tSignal = theFirstATTRINFO;
    theCurrentATTRINFO->setLength(theAI_LenInCurrAI);
    do {
      Uint32* tSigDataPtr = tSignal->getDataPtrSend();
      NdbApiSignal* tnextSignal = tSignal->next();
      tSigDataPtr[0] = aTC_ConnectPtr;
      tSigDataPtr[1] = tTransId1;
      tSigDataPtr[2] = tTransId2;
      tSignal = tnextSignal;
    } while (tSignal != NULL);
  }//if
  theStatus = WaitResponse;
  theReceiver.prepareSend();
  return 0;
}//NdbOperation::prepareSend()

/***************************************************************************
int prepareSendInterpreted()

Make preparations to send an interpreted operation.
Return Value:   Return 0 : succesful.
                Return -1: In all other case.   
***************************************************************************/
int
NdbOperation::prepareSendInterpreted()
{
  Uint32 tTotalCurrAI_Len = theTotalCurrAI_Len;
  Uint32 tInitReadSize = theInitialReadSize;
  if (theStatus == ExecInterpretedValue) {
    if (insertATTRINFO(Interpreter::EXIT_OK) != -1) {
//-------------------------------------------------------------------------
// Since we read the total length before inserting the last entry in the
// signals we need to add one to the total length.
//-------------------------------------------------------------------------

      theInterpretedSize = (tTotalCurrAI_Len + 1) -
       (tInitReadSize + 5);

    } else {
      return -1;
    }//if
  } else if (theStatus == FinalGetValue) {

    theFinalReadSize = tTotalCurrAI_Len -
      (tInitReadSize + theInterpretedSize + theFinalUpdateSize + 5);

  } else if (theStatus == SetValueInterpreted) {

    theFinalUpdateSize = tTotalCurrAI_Len -
       (tInitReadSize + theInterpretedSize + 5);

  } else if (theStatus == SubroutineEnd) {

    theSubroutineSize = tTotalCurrAI_Len -
      (tInitReadSize + theInterpretedSize + 
         theFinalUpdateSize + theFinalReadSize + 5);

  } else if (theStatus == GetValue) {
    theInitialReadSize = tTotalCurrAI_Len - 5;
  } else {
    setErrorCodeAbort(4116);
    return -1;
  }

  while (theFirstBranch != NULL) {
    Uint32 tRelAddress;
    Uint32 tLabelAddress = 0;
    int     tAddress = -1;
    NdbBranch* tNdbBranch = theFirstBranch;
    Uint32 tBranchLabel = tNdbBranch->theBranchLabel;
    NdbLabel* tNdbLabel = theFirstLabel;
    if (tBranchLabel >= theNoOfLabels) {
      setErrorCodeAbort(4221);
      return -1;
    }//if

    // Find the label address
    while (tNdbLabel != NULL) {
      for(tLabelAddress = 0; tLabelAddress<16; tLabelAddress++){
	const Uint32 labelNo = tNdbLabel->theLabelNo[tLabelAddress];
	if(tBranchLabel == labelNo){
	  tAddress = tNdbLabel->theLabelAddress[tLabelAddress];
	  break;
	}
      }
      
      if(tAddress != -1)
	break;
      tNdbLabel = tNdbLabel->theNext;
    }//while
    if (tAddress == -1) {
//-------------------------------------------------------------------------
// We were unable to find any label which the branch refers to. This means
// that the application have not programmed the interpreter program correctly.
//-------------------------------------------------------------------------
      setErrorCodeAbort(4222);
      return -1;
    }//if
    if (tNdbLabel->theSubroutine[tLabelAddress] != tNdbBranch->theSubroutine) {
      setErrorCodeAbort(4224);
      return -1;
    }//if
    // Now it is time to update the signal data with the relative branch jump.
    if (tAddress < int(tNdbBranch->theBranchAddress)) {
      tRelAddress = (tNdbBranch->theBranchAddress - tAddress) << 16;
      
      // Indicate backward jump direction
      tRelAddress = tRelAddress + (1 << 31);

    } else if (tAddress > int(tNdbBranch->theBranchAddress)) {
      tRelAddress = (tAddress - tNdbBranch->theBranchAddress) << 16;
    } else {
       setErrorCodeAbort(4223);
       return -1;
    }//if
    NdbApiSignal* tSignal = tNdbBranch->theSignal;
    Uint32 tReadData = tSignal->readData(tNdbBranch->theSignalAddress);
    tSignal->setData((tRelAddress + tReadData), tNdbBranch->theSignalAddress);
      
    theFirstBranch = theFirstBranch->theNext;
    theNdb->releaseNdbBranch(tNdbBranch);
  }//while

  while (theFirstCall != NULL) {
    Uint32 tSubroutineCount = 0;
    int     tAddress = -1;
    NdbSubroutine* tNdbSubroutine;
    NdbCall* tNdbCall = theFirstCall;
    if (tNdbCall->theSubroutine >= theNoOfSubroutines) {
      setErrorCodeAbort(4221);
      return -1;
    }//if
// Find the subroutine address
    tNdbSubroutine = theFirstSubroutine;
    while (tNdbSubroutine != NULL) {
      tSubroutineCount += 16;
      if (tNdbCall->theSubroutine < tSubroutineCount) {
// Subroutine Found
        Uint32 tSubroutineAddress = tNdbCall->theSubroutine - (tSubroutineCount - 16);
        tAddress = tNdbSubroutine->theSubroutineAddress[tSubroutineAddress];
        break;
      }//if
      tNdbSubroutine = tNdbSubroutine->theNext;
    }//while
    if (tAddress == -1) {
      setErrorCodeAbort(4222);
      return -1;
    }//if
// Now it is time to update the signal data with the relative branch jump.
    NdbApiSignal* tSignal = tNdbCall->theSignal;
    Uint32 tReadData = tSignal->readData(tNdbCall->theSignalAddress);
    tSignal->setData(((tAddress << 16) + tReadData), tNdbCall->theSignalAddress);
      
    theFirstCall = theFirstCall->theNext;
    theNdb->releaseNdbCall(tNdbCall);
  }//while
  
  Uint32 tInitialReadSize = theInitialReadSize;
  Uint32 tInterpretedSize = theInterpretedSize;
  Uint32 tFinalUpdateSize = theFinalUpdateSize;
  Uint32 tFinalReadSize   = theFinalReadSize;
  Uint32 tSubroutineSize  = theSubroutineSize;
  if (theOperationType != OpenScanRequest &&
      theOperationType != OpenRangeScanRequest) {
    TcKeyReq * const tcKeyReq = CAST_PTR(TcKeyReq, theTCREQ->getDataPtrSend());

    tcKeyReq->attrInfo[0] = tInitialReadSize;
    tcKeyReq->attrInfo[1] = tInterpretedSize;
    tcKeyReq->attrInfo[2] = tFinalUpdateSize;
    tcKeyReq->attrInfo[3] = tFinalReadSize;
    tcKeyReq->attrInfo[4] = tSubroutineSize;
  } else {
    // If a scan is defined we use the first ATTRINFO instead of TCKEYREQ.
    theFirstATTRINFO->setData(tInitialReadSize, 4);
    theFirstATTRINFO->setData(tInterpretedSize, 5);
    theFirstATTRINFO->setData(tFinalUpdateSize, 6);
    theFirstATTRINFO->setData(tFinalReadSize, 7);
    theFirstATTRINFO->setData(tSubroutineSize, 8);  
  }//if
  theReceiver.prepareSend();
  return 0;
}//NdbOperation::prepareSendInterpreted()

int
NdbOperation::checkState_TransId(NdbApiSignal* aSignal)
{
  Uint64 tRecTransId, tCurrTransId;
  Uint32 tTmp1, tTmp2;

  if (theStatus != WaitResponse) {
#ifdef NDB_NO_DROPPED_SIGNAL
    abort();
#endif
    return -1;
  }//if

  tTmp1 = aSignal->readData(2);
  tTmp2 = aSignal->readData(3);

  tRecTransId = (Uint64)tTmp1 + ((Uint64)tTmp2 << 32);
  tCurrTransId = theNdbCon->getTransactionId();
  if (tCurrTransId != tRecTransId) {
#ifdef NDB_NO_DROPPED_SIGNAL
    abort();
#endif
    return -1;
  }//if
  return 0;
}//NdbOperation::checkState_TransId()

/***************************************************************************
int receiveTCKEYREF( NdbApiSignal* aSignal)

Return Value:   Return 0 : send was succesful.
                Return -1: In all other case.   
Parameters:     aSignal: the signal object that contains the TCKEYREF signal from TC.
Remark:         Handles the reception of the TCKEYREF signal.
***************************************************************************/
int
NdbOperation::receiveTCKEYREF( NdbApiSignal* aSignal)
{
  if (checkState_TransId(aSignal) == -1) {
    return -1;
  }//if

  AbortOption ao = (AbortOption)
    (m_abortOption != -1 ? m_abortOption : theNdbCon->m_abortOption);
  theReceiver.m_received_result_length = ~0;

  theStatus = Finished;
  // blobs want this
  if (m_abortOption != AO_IgnoreError)
  {
    theNdbCon->theReturnStatus = NdbTransaction::ReturnFailure;
  }
  theError.code = aSignal->readData(4);
  theNdbCon->setOperationErrorCodeAbort(aSignal->readData(4), ao);

  if(theOperationType != ReadRequest || !theSimpleIndicator) // not simple read
    return theNdbCon->OpCompleteFailure(ao, m_abortOption != AO_IgnoreError);
  
  /**
   * If TCKEYCONF has arrived
   *   op has completed (maybe trans has completed)
   */
  if(theReceiver.m_expected_result_length)
  {
    return theNdbCon->OpCompleteFailure(AbortOnError);
  }
  
  return -1;
}


void
NdbOperation::handleFailedAI_ElemLen()
{
  NdbRecAttr* tRecAttr = theReceiver.theFirstRecAttr;
  while (tRecAttr != NULL) {
    tRecAttr->setNULL();
    tRecAttr = tRecAttr->next();
  }//while
}//NdbOperation::handleFailedAI_ElemLen()