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/***************************************************************************
* Copyright (C) 2007 by Ken Werner *
* ken.werner@web.de *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "threadedtrigger.h"
#include <tqapplication.h>
//#include "kdebug.h"
ThreadedTrigger::ThreadedTrigger(TriggeredSource* inSource, unsigned long inRefreshSleep):
mSource(inSource),
mRefreshSleep(inRefreshSleep),
mRunning(false)
{
connect(mSource, TQT_SIGNAL(enabledChanged(bool, Source*)), this, TQT_SLOT(enable(bool)));
}
ThreadedTrigger::~ThreadedTrigger(){
enable(false);
}
void ThreadedTrigger::enable(bool inEnable){
if(inEnable && !mRunning){ // start this thread (calls run())
//kdDebug() << "start thread " << mSource->getName() << endl;
// start the thread
mRunning = true;
this->start(TQThread::LowPriority);
}else if(!inEnable && mRunning){ // stops the thread
//kdDebug() << "stop thread " << mSource->getName() << endl;
mRunning = false;
mWaitMutex.lock();
mWaitCond.wakeOne();
mWaitMutex.unlock();
this->wait();
}
}
void ThreadedTrigger::run(){
mWaitMutex.lock();
while( mRunning ) {
TQString text = mSource->fetchValue();
UpdateEvent* ue = new UpdateEvent(text); // TQt will delete the ue when done
TQApplication::postEvent(mSource, ue); // send the event to the TriggeredSource
if(mWaitCond.wait(&mWaitMutex, mRefreshSleep))
break; // we were woken up
}
// if we are here, the mutex must be locked:
// 1. TQWaitCondition::wait locks it when it returns
// 2. mWaitMutex is locked when we enter the loop
mWaitMutex.unlock(); // unlock it again
}
#include "threadedtrigger.moc"
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