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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 */
#include "dba_process.hpp"
NewtonBatchProcess::NewtonBatchProcess(Ndb & ndb, NdbMutex & mutex) :
theNdb(ndb),
theMutex(mutex)
{
theThread = 0;
startStopMutex = NdbMutex_Create();
_running = false;
_stop = false;
}
NewtonBatchProcess::~NewtonBatchProcess(){
doStop(true);
if(theThread != 0)
NdbThread_Destroy(&theThread);
if(startStopMutex != 0)
NdbMutex_Destroy(startStopMutex);
startStopMutex = 0;
}
extern "C"
void*
runNDB_C(void * _nbp){
NewtonBatchProcess * nbp = (NewtonBatchProcess*)_nbp;
nbp->_running = true;
nbp->run();
nbp->_running = false;
/**
* This sleep is to make sure that the transporter
* send thread will come in and send any
* signal buffers that this thread may have allocated.
* If that doesn't happen an error will occur in OSE
* when trying to restore a signal buffer allocated by a thread
* that have been killed.
*/
NdbSleep_MilliSleep(50);
NdbThread_Exit(0);
return 0;
}
void
NewtonBatchProcess::doStart(){
NdbMutex_Lock(startStopMutex);
if(_running && !_stop){
NdbMutex_Unlock(startStopMutex);
return ;
}
while(_running){
NdbMutex_Unlock(startStopMutex);
NdbSleep_MilliSleep(200);
NdbMutex_Lock(startStopMutex);
}
require(!_running);
_stop = false;
if(theThread != 0)
NdbThread_Destroy(&theThread);
theThread = NdbThread_Create(runNDB_C,
(void**)this,
65535,
"Newton_BP",
NDB_THREAD_PRIO_LOWEST);
NdbMutex_Unlock(startStopMutex);
}
void
NewtonBatchProcess::doStop(bool wait){
NdbMutex_Lock(startStopMutex);
_stop = true;
if(wait){
while(_running){
NdbSleep_MilliSleep(200);
}
}
NdbMutex_Unlock(startStopMutex);
}
bool
NewtonBatchProcess::isRunning() const {
return _running;
}
bool
NewtonBatchProcess::isStopping() const {
return _stop;
}
void
NewtonBatchProcess::run(){
while(!_stop){
NdbMutex_Lock(&theMutex);
theNdb.sendPollNdb(0, 1, DBA__NBP_Force);
NdbMutex_Unlock(&theMutex);
NdbSleep_MilliSleep(DBA__NBP_Intervall);
}
}
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