/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
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** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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**
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** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/
#include "qthread.h"
#include "qthread_p.h"
/**************************************************************************
** QThreadPrivate
*************************************************************************/
QThreadPrivate::QThreadPrivate() :
running(FALSE), finished(FALSE), terminated(FALSE), stackSize(0)
{
handle = NULL;
waiters = 0;
}
QThreadPrivate::~QThreadPrivate()
{
}
unsigned int __stdcall QThreadPrivate::start(void *arg)
{
QThread *thr = reinterpret_cast<QThread *>(arg);
thr->started();
thr->run();
finish(arg);
return 0;
}
void QThreadPrivate::finish(void *arg,bool lockAnyway)
{
QThread *thr = reinterpret_cast<QThread *>(arg);
QThreadPrivate *d = thr->d;
if (lockAnyway) d->mutex.lock();
d->running = FALSE;
d->finished = TRUE;
if (d->terminated) thr->terminated();
d->terminated = FALSE;
thr->finished();
if (!d->waiters)
{
CloseHandle(d->handle);
d->handle = 0;
}
if (lockAnyway) d->mutex.unlock();
}
/**************************************************************************
** QThread
*************************************************************************/
void QThread::start()
{
QMutexLocker locker(&d->mutex);
if (d->running) return;
d->running = TRUE;
d->finished = FALSE;
d->terminated = FALSE;
d->handle = CreateThread(NULL,d->stackSize,
(LPTHREAD_START_ROUTINE)QThreadPrivate::start,this,0,NULL);
if (!d->handle)
{
qWarning("QThread::start: Failed to create thread: errno=%d",errno);
d->running = FALSE;
d->finished = TRUE;
return;
}
}
void QThread::terminate()
{
QMutexLocker locker(&d->mutex);
if (!d->running) return;
TerminateThread(d->handle, 0);
d->terminated = TRUE;
QThreadPrivate::finish(this);
}
void QThread::wait()
{
QMutexLocker locker(&d->mutex);
if (d->finished || !d->running) return;
++d->waiters;
locker.mutex()->unlock();
WaitForSingleObject(d->handle,INFINITE);
locker.mutex()->lock();
--d->waiters;
if (!d->finished) // thread was terminated by someone else
{
d->terminated = TRUE;
QThreadPrivate::finish(this);
}
if (d->finished && d->waiters)
{
CloseHandle(d->handle);
d->handle = 0;
}
}
int QThread::idealThreadCount()
{
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
}