|
Packit |
1c1d7e |
/****************************************************************************
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
Packit |
1c1d7e |
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** This file is part of the QtCore module of the Qt Toolkit.
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** $QT_BEGIN_LICENSE:LGPL$
|
|
Packit |
1c1d7e |
** No Commercial Usage
|
|
Packit |
1c1d7e |
** This file contains pre-release code and may not be distributed.
|
|
Packit |
1c1d7e |
** You may use this file in accordance with the terms and conditions
|
|
Packit |
1c1d7e |
** contained in the either Technology Preview License Agreement or the
|
|
Packit |
1c1d7e |
** Beta Release License Agreement.
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** GNU Lesser General Public License Usage
|
|
Packit |
1c1d7e |
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
Packit |
1c1d7e |
** General Public License version 2.1 as published by the Free Software
|
|
Packit |
1c1d7e |
** Foundation and appearing in the file LICENSE.LGPL included in the
|
|
Packit |
1c1d7e |
** packaging of this file. Please review the following information to
|
|
Packit |
1c1d7e |
** ensure the GNU Lesser General Public License version 2.1 requirements
|
|
Packit |
1c1d7e |
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** In addition, as a special exception, Nokia gives you certain
|
|
Packit |
1c1d7e |
** additional rights. These rights are described in the Nokia Qt LGPL
|
|
Packit |
1c1d7e |
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
|
|
Packit |
1c1d7e |
** package.
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** GNU General Public License Usage
|
|
Packit |
1c1d7e |
** Alternatively, this file may be used under the terms of the GNU
|
|
Packit |
1c1d7e |
** General Public License version 3.0 as published by the Free Software
|
|
Packit |
1c1d7e |
** Foundation and appearing in the file LICENSE.GPL included in the
|
|
Packit |
1c1d7e |
** packaging of this file. Please review the following information to
|
|
Packit |
1c1d7e |
** ensure the GNU General Public License version 3.0 requirements will be
|
|
Packit |
1c1d7e |
** met: http://www.gnu.org/copyleft/gpl.html.
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
** If you are unsure which license is appropriate for your use, please
|
|
Packit |
1c1d7e |
** contact the sales department at http://www.qtsoftware.com/contact.
|
|
Packit |
1c1d7e |
** $QT_END_LICENSE$
|
|
Packit |
1c1d7e |
**
|
|
Packit |
1c1d7e |
****************************************************************************/
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
#include <errno.h>
|
|
Packit |
1c1d7e |
#include <pthread.h>
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
#include "qglobal.h"
|
|
Packit |
1c1d7e |
#include "qmutex.h"
|
|
Packit |
1c1d7e |
#include "qmutex_p.h"
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
static pthread_mutex_t qAtomicMutex = PTHREAD_MUTEX_INITIALIZER;
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
static void report_error(int code, const char *where, const char *what)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
if (code != 0)
|
|
Packit |
1c1d7e |
qWarning("%s: %s failure: %d", where, what, code);
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
QMutexPrivate::QMutexPrivate()
|
|
Packit |
1c1d7e |
: contenders(0), wakeup(FALSE)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_init(&mutex, NULL), "QMutex", "mutex init");
|
|
Packit |
1c1d7e |
report_error(pthread_cond_init(&cond, NULL), "QMutex", "cv init");
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
QMutexPrivate::~QMutexPrivate()
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
report_error(pthread_cond_destroy(&cond), "QMutex", "cv destroy");
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_destroy(&mutex), "QMutex", "mutex destroy");
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
void QMutexPrivate::wait()
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_lock(&mutex), "QMutex::lock", "mutex lock");
|
|
Packit |
1c1d7e |
int errorCode = 0;
|
|
Packit |
1c1d7e |
while (!wakeup)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
errorCode = pthread_cond_wait(&cond, &mutex);
|
|
Packit |
1c1d7e |
if (errorCode)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
report_error(errorCode, "QMutex::lock()", "cv wait");
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
wakeup = FALSE;
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_unlock(&mutex), "QMutex::lock", "mutex unlock");
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
void QMutexPrivate::wakeUp()
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_lock(&mutex), "QMutex::unlock", "mutex lock");
|
|
Packit |
1c1d7e |
wakeup = TRUE;
|
|
Packit |
1c1d7e |
report_error(pthread_cond_signal(&cond), "QMutex::unlock", "cv signal");
|
|
Packit |
1c1d7e |
report_error(pthread_mutex_unlock(&mutex), "QMutex::unlock", "mutex unlock");
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
bool QAtomicInt::testAndSet(int expectedValue,int newValue)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
bool returnValue = false;
|
|
Packit |
1c1d7e |
pthread_mutex_lock(&qAtomicMutex);
|
|
Packit |
1c1d7e |
if (m_value == expectedValue)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
m_value = newValue;
|
|
Packit |
1c1d7e |
returnValue = true;
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
pthread_mutex_unlock(&qAtomicMutex);
|
|
Packit |
1c1d7e |
return returnValue;
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|
|
Packit |
1c1d7e |
int QAtomicInt::fetchAndAdd(int valueToAdd)
|
|
Packit |
1c1d7e |
{
|
|
Packit |
1c1d7e |
int returnValue;
|
|
Packit |
1c1d7e |
pthread_mutex_lock(&qAtomicMutex);
|
|
Packit |
1c1d7e |
returnValue = m_value;
|
|
Packit |
1c1d7e |
m_value += valueToAdd;
|
|
Packit |
1c1d7e |
pthread_mutex_unlock(&qAtomicMutex);
|
|
Packit |
1c1d7e |
return returnValue;
|
|
Packit |
1c1d7e |
}
|
|
Packit |
1c1d7e |
|