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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 */
//******************************************************************************
// General signal handling methods
// All implementations stolen from the Ndb class.
// Some kind of reuse should be preferred.
//******************************************************************************
#include "MgmtSrvr.hpp"
#include <NdbApiSignal.hpp>
#include <NdbTick.h>
NdbApiSignal*
MgmtSrvr::getSignal()
{
NdbApiSignal* tSignal;
tSignal = theSignalIdleList;
if (tSignal != NULL){
NdbApiSignal* tSignalNext = tSignal->next();
tSignal->next(NULL);
theSignalIdleList = tSignalNext;
return tSignal;
} else
{
tSignal = new NdbApiSignal(_ownReference);
if (tSignal != NULL)
tSignal->next(NULL);
}
return tSignal;
}
void
MgmtSrvr::releaseSignal(NdbApiSignal* aSignal)
{
aSignal->next(theSignalIdleList);
theSignalIdleList = aSignal;
}
void
MgmtSrvr::freeSignal()
{
NdbApiSignal* tSignal = theSignalIdleList;
theSignalIdleList = tSignal->next();
delete tSignal;
}
int
MgmtSrvr::sendSignal(Uint16 aNodeId,
WaitSignalType aWaitState,
NdbApiSignal* aSignal,
bool force)
{
int tReturnCode;
theFacade->lock_mutex();
if(force){
tReturnCode = theFacade->sendSignalUnCond(aSignal,
aNodeId);
} else {
tReturnCode = theFacade->sendSignal(aSignal,
aNodeId);
}
releaseSignal(aSignal);
if (tReturnCode == -1) {
theFacade->unlock_mutex();
return -1;
}
theWaitState = aWaitState;
theFacade->unlock_mutex();
return 0;
}
int
MgmtSrvr::sendRecSignal(Uint16 aNodeId,
WaitSignalType aWaitState,
NdbApiSignal* aSignal,
bool force,
int waitTime)
{
int tReturnCode;
theFacade->lock_mutex();
if(force){
tReturnCode = theFacade->sendSignalUnCond(aSignal, aNodeId);
} else {
tReturnCode = theFacade->sendSignalUnCond(aSignal, aNodeId);
}
releaseSignal(aSignal);
if (tReturnCode == -1) {
theFacade->unlock_mutex();
return -1;
}
theWaitState = aWaitState;
theWaitNode = aNodeId;
return receiveOptimisedResponse(waitTime);
}
int
MgmtSrvr::receiveOptimisedResponse(int waitTime)
{
int tResultCode;
theFacade->checkForceSend(_blockNumber);
NDB_TICKS maxTime = NdbTick_CurrentMillisecond() + waitTime;
while (theWaitState != NO_WAIT && theWaitState != WAIT_NODEFAILURE
&& waitTime > 0) {
NdbCondition_WaitTimeout(theMgmtWaitForResponseCondPtr,
theFacade->theMutexPtr,
waitTime);
if(theWaitState == NO_WAIT || theWaitState == WAIT_NODEFAILURE)
break;
waitTime = (maxTime - NdbTick_CurrentMillisecond());
}//while
if(theWaitState == NO_WAIT) {
tResultCode = 0;
} else {
tResultCode = -1;
}
theFacade->unlock_mutex();
return tResultCode;
}
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