crash multithread

Bonjour, voila mon application complete:
http://files.first-world.info/ultrac...er-src.tar.bz2
Et voila le code à probléme:

Code:

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/***************************************************************************
                                  WriteThread.cpp
                              -------------------
 
     Begin        : Web May 6 2009 19:11 alpha_one_x86
     Project      : Ultracopier
     Email        : alpha.super-one@laposte.net
     Note         : See README for copyright and developer
     Target       : Define the class of the writeThread
 
****************************************************************************/
 
#include "WriteThread.h"
 
WriteThread::WriteThread(copyThread *parent)
{
	this->parent=parent;
	theCurrentStat=WriteThread::Stopped;
	stopIt=false;
	endOfSource=false;
	source=NULL;
	destination=NULL;
	theItem.id=0;
	movingMode=false;
	mutexWaitControlR.lock();
	mutexWaitControlW.lock();
	debugRcount=0;
	debugWcount=0;
}
 
WriteThread::~WriteThread()
{
	mutexWaitControlW.unlock();
	mutexWaitControlR.unlock();
}
 
void WriteThread::setFiles(QFile * source,QFile * destination,copyItemInternal theItem)
{
	DEBUGCONSOLE(50,"WriteThread::setFiles","source: "+source->fileName()+", destination: "+destination->fileName());
	this->source=source;
	this->destination=destination;
	this->theItem=theItem;
	controlMutexR.wakeAll();
}
 
void WriteThread::stop()
{
	stopIt=true;
	controlMutexR.wakeAll();
	controlMutexW.wakeAll();
}
 
void WriteThread::addNewBlock(QByteArray newBlock)
{
	DEBUGCONSOLE(50,"WriteThread::addNewBlock","newBlock size: "+QString::number(newBlock.size()));
	debugRcount+=newBlock.size();
	//wait if list is full
	if(theBlockList.size()>LISTBLOCKSIZE)
		controlMutexW.wait(&mutexWaitControlW);
	{
		QMutexLocker lock_mutex(&pipe);
		theBlockList.append(newBlock);
	}
	//wake if list is becoming not empty
	controlMutexR.wakeAll();
}
 
/// \brief end of source detected
void WriteThread::endOfSourceDetected()
{
	endOfSource=true;
	controlMutexR.wakeAll();
}
 
/// \brief set action on error
void WriteThread::errorAction(int action)
{
	DEBUGCONSOLE(50,"WriteThread::fileExistsAction","action: "+QString::number(action));
	actionAfterUnlock=action;
	if(action==ERRORACTION_CLOSE)
		stop();
	else
	{
		controlMutexR.wakeAll();
		theCurrentStat=WriteThread::Running;
	}
}
 
/// \brief return the statut
WriteThread::currentStat WriteThread::getCurrentStat()
{
	return theCurrentStat;
}
 
void WriteThread::setKeepDate(bool keepDate)
{
	this->keepDate=keepDate;
}
 
void WriteThread::setMovingMode(bool movingMode)
{
	this->movingMode=movingMode;
}
 
 
void WriteThread::run()
{
	DEBUGCONSOLE(50,"WriteThread::run","start");
	if(source==NULL || destination==NULL || theItem.id==0)
	{
		DEBUGCONSOLE(10,"WriteThread::run","item not loaded!");
		return;
	}
	do
	{
		endOfSource=false;
		theCurrentStat=WriteThread::Running;
		QByteArray blockArray;
		qint64 positionInDestination=0,bytesWriten=0;
		DEBUGCONSOLE(50,"WriteThread::run","start loop");
		do
		{
			//wait if list is empty then wait
			if(theBlockList.size()==0 && !endOfSource)
				controlMutexR.wait(&mutexWaitControlR);
 
			{
				QMutexLocker lock_mutex(&pipe);
				//read one block
				if(theBlockList.size()==0)
					blockArray.clear();
				else
				{
					blockArray=theBlockList.first();
					theBlockList.removeFirst();
				}
			}
			controlMutexW.wakeAll();
 
			//write one block
			if(!stopIt && !blockArray.isEmpty())
			{
				positionInDestination=destination->pos();
				retryWriteThisBlock:
				bytesWriten=destination->write(blockArray);
				if(destination->error()!=QFile::NoError || bytesWriten!=blockArray.size())
				{
					retrySeekDestination:
					actionAfterUnlock=-1;
					DEBUGCONSOLE(90,"WriteThread::run","Error in writing: "+destination->errorString());
					emit errorOnFile(ERROR_DEF_ALL,destination->fileName(),tr("Error in writing destination: ")+destination->errorString(),theItem.id);
					theCurrentStat=WriteThread::Paused;
					if(actionAfterUnlock==-1)
						controlMutexR.wait(&mutexWaitControlR);
					theCurrentStat=WriteThread::Running;
					if(actionAfterUnlock==ERRORACTION_RETRY)
					{
						if(!destination->seek(positionInDestination))
							goto retrySeekDestination;
						goto retryWriteThisBlock;
					}
					else if(actionAfterUnlock==ERRORACTION_SKIP)
						goto SkipFile;
					else if(actionAfterUnlock==ERRORACTION_CLOSE)
						goto SkipFile;
					else
					{
						DEBUGCONSOLE(10,"WriteThread::run","Unknow action at destination write error ("+QString::number(actionAfterUnlock)+")");
						goto SkipFile;
					}
				}
			}
		}
		while(!blockArray.isEmpty() && bytesWriten==blockArray.size() && !stopIt && (theBlockList.size() || !endOfSource));
		DEBUGCONSOLE(70,"WriteThread::run","blockArray.isEmpty(): "+QString::number(blockArray.isEmpty()));
		DEBUGCONSOLE(70,"WriteThread::run","bytesWriten: "+QString::number(bytesWriten));
		DEBUGCONSOLE(70,"WriteThread::run","blockArray.size(): "+QString::number(blockArray.size()));
		DEBUGCONSOLE(70,"WriteThread::run","stopIt: "+QString::number(stopIt));
		DEBUGCONSOLE(70,"WriteThread::run","theBlockList.size(): "+QString::number(theBlockList.size()));
		DEBUGCONSOLE(70,"WriteThread::run","endOfSource: "+QString::number(endOfSource));
		endOfSource=false;
 
		DEBUGCONSOLE(90,"WriteThread::run","closing source done");
		if(destination->isOpen())
			destination->close();
		DEBUGCONSOLE(90,"WriteThread::run","closing destination done");
 
		//set the time if no write thread used
		if(keepDate)
		{
			retrySetDate:
			DEBUGCONSOLE(90,"WriteThread::run","set date...");
			if(!changeFileDateTime(destination->fileName(),source->fileName()))
			{
				actionAfterUnlock=-1;
				DEBUGCONSOLE(90,"WriteThread::run","Date cannot be modified!");
				emit errorOnFile(ERROR_DEF_ALL,source->fileName(),tr("Date cannot be modified!"),theItem.id);
				theCurrentStat=WriteThread::Paused;
				if(actionAfterUnlock==-1)
					controlMutexR.wait(&mutexWaitControlR);
				theCurrentStat=WriteThread::Running;
				if(actionAfterUnlock==ERRORACTION_RETRY)
					goto retrySetDate;
				else if(actionAfterUnlock==ERRORACTION_SKIP)
					goto SkipFile;
				else if(actionAfterUnlock==ERRORACTION_CLOSE)
					goto SkipFile;
				else
				{
					DEBUGCONSOLE(10,"WriteThread::run","Unknow action at change file time ("+QString::number(actionAfterUnlock)+")");
					goto SkipFile;
				}
			}
			DEBUGCONSOLE(90,"WriteThread::run","set date done");
		}
 
		//if query to stop, directly go to SkipFile
		if(stopIt)
			goto SkipFile;
 
		//remove source in moving mode
		if(movingMode)
		{
			DEBUGCONSOLE(90,"WriteThread::run","try remove source...");
			if(!source->remove())
			{
				actionAfterUnlock=-1;
				DEBUGCONSOLE(10,"WriteThread::run","source->errorString():\""+source->errorString()+"\" while removing the source");
				emit errorOnFile(ERROR_DEF_ALL,destination->fileName(),tr("Unable to remove the source file in moving mode: ")+source->errorString(),theItem.id);
				theCurrentStat=WriteThread::Paused;
				if(actionAfterUnlock==-1)
					controlMutexR.wait(&mutexWaitControlR);
				theCurrentStat=WriteThread::Running;
				if(actionAfterUnlock==ERRORACTION_RETRY)
					goto retrySetDate;
				else if(actionAfterUnlock==ERRORACTION_SKIP)
					goto SkipFile;
				else if(actionAfterUnlock==ERRORACTION_CLOSE)
					goto SkipFile;
				else
				{
					DEBUGCONSOLE(10,"WriteThread::run","Unknow action at remove source file ("+QString::number(actionAfterUnlock)+")");
					goto SkipFile;
				}
			}
			DEBUGCONSOLE(90,"WriteThread::run","try remove source done");
		}
 
		DEBUGCONSOLE(90,"WriteThread::run","now is in SkipFile point!");
		SkipFile:
		//close file
		DEBUGCONSOLE(90,"WriteThread::run","closing source and destination...");
		if(destination->isOpen())
			destination->close();
		DEBUGCONSOLE(90,"WriteThread::run","closing destination done");
 
		if((actionAfterUnlock==ERRORACTION_SKIP || actionAfterUnlock==ERRORACTION_CLOSE || stopIt) && destination->exists())
		{
			DEBUGCONSOLE(50,"WriteThread::run","try remove destination: "+destination->fileName());
			destination->remove();
		}
		parent->deleteFileObject(source,destination);
		source=NULL;
		destination=NULL;
		theItem.id=0;
		theCurrentStat=WriteThread::Stopped;
		controlMutexR.wait(&mutexWaitControlR);
	} while(true);
}

Quand j'essaye de faire les wakeAll(); que quand nécessaire j'ai un deadlock, et en l'état j'ai un crash de l'application avec comme backtrace:

Citation:

ASSERT failure in QMutex::unlock(): "A mutex must be unlocked in the same thread that locked it.", file thread/qmutex.cpp, line 373

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7f21a001b950 (LWP 5436)]
0x00007f21a9ba41e5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
in ../nptl/sysdeps/unix/sysv/linux/raise.c
Current language: auto; currently c
(gdb) bt
#0 0x00007f21a9ba41e5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007f21a9ba5703 in *__GI_abort () at abort.c:88
#2 0x00007f21ab3e82e5 in qt_message_output (msgType=QtFatalMsg, buf=<value optimized out>) at global/qglobal.cpp:2017
#3 0x00007f21ab3e8400 in qFatal (msg=<value optimized out>) at global/qglobal.cpp:2216
#4 0x00007f21ab3eaef9 in QMutex::unlock (this=0x3195cb8) at thread/qmutex.cpp:373
#5 0x00007f21ab3f158e in QWaitCondition::wait (this=0x3195cb0, mutex=0x3195cb8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:157
#6 0x0000000000495f27 in WriteThread::run (this=0x3195c90) at WriteThread.cpp:125
#7 0x00007f21ab3f0ac9 in QThreadPrivate::start (arg=0x3195c90) at thread/qthread_unix.cpp:189
#8 0x00007f21aa673007 in start_thread (arg=<value optimized out>) at pthread_create.c:297
#9 0x00007f21a9c41f4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

La je voie vraiment plus quoi faire.
Merci de votre aide.

Citation:

ASSERT failure in QMutex::unlock(): "A mutex must be unlocked in the same thread that locked it.", file thread/qmutex.cpp, line 373

tu utilise des ssignal/slot non?
Il faut savoir que les slot de QThread ne sont pas exécuté dans la thread qu'il créé.

Citation:

Envoyé par yan

tu utilise des signal/slot non?
Il faut savoir que les slot de QThread ne sont pas exécuté dans la thread qu'il créé.

Je sais, et aucun slot n'est dans cette classe. Et la j'ai bien fait gaffe de lock() et unlock() dans le constructeur/destructeur.

Citation:

Envoyé par alpha_one_x86

Je sais, et aucun slot n'est dans cette classe. Et la j'ai bien fait gaffe de lock() et unlock() dans le constructeur/destructeur.

QThread ne s'exécute pas dans la thread, elle ne fait que la créer.
N'importe quelle fonction appelé directement est éxécuté dans le thread appelant.

Citation:

Envoyé par yan

QThread ne s'exécute pas dans la thread, elle ne fait que la créer.
N'importe quelle fonction appelé directement est éxécuté dans le thread appelant.

Je sais, et seul run() est executé dans le thread par l'appelle de start().

Citation:

Envoyé par alpha_one_x86

Je sais, et seul run() est executé dans le thread par l'appelle de start().

L'assert est assez explicite.
Tu as un endroit ou tu lock à partir d'un thread A et tu essaie de le delocker à partir d'un thread B.

J'ai trouvé quelque chose de trés intéréssant, quand je remplcae ça:
if(!theCurrentThread->isRunning())
theCurrentThread->start();
par:
if(theCurrentThread->isFinished())
theCurrentThread->start();
J'obtiens un deadlock mais plus de crash. Ce soir je vais regarder plus en détails ce deadlock. J'ai pas le temps la je repart en cour.