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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformdefs.h"
#include <QtCore/qatomic.h>
// If operating system, processor, and compiler detection fails, we fall back
// to this generic, out-of-line implementation
#if defined(QATOMIC_UNIX_H)
QT_BEGIN_NAMESPACE
static pthread_mutex_t qAtomicMutex = PTHREAD_MUTEX_INITIALIZER;
Q_CORE_EXPORT
bool QAtomicOps<int>::testAndSetRelaxed(int &_q_value, int expectedValue, int newValue) Q_DECL_NOTHROW
{
bool returnValue = false;
pthread_mutex_lock(&qAtomicMutex);
if (_q_value == expectedValue) {
_q_value = newValue;
returnValue = true;
}
pthread_mutex_unlock(&qAtomicMutex);
return returnValue;
}
Q_CORE_EXPORT
bool QAtomicOps<long long>::testAndSetRelaxed(Type &_q_value, Type expectedValue, Type newValue) Q_DECL_NOTHROW
{
bool returnValue = false;
pthread_mutex_lock(&qAtomicMutex);
if (_q_value == expectedValue) {
_q_value = newValue;
returnValue = true;
}
pthread_mutex_unlock(&qAtomicMutex);
return returnValue;
}
Q_CORE_EXPORT
bool QAtomicOps<void *>::testAndSetRelaxed(void *&_q_value, void *expectedValue, void *newValue) Q_DECL_NOTHROW
{
bool returnValue = false;
pthread_mutex_lock(&qAtomicMutex);
if (_q_value == expectedValue) {
_q_value = newValue;
returnValue = true;
}
pthread_mutex_unlock(&qAtomicMutex);
return returnValue;
}
QT_END_NAMESPACE
#endif // QATOMIC_UNIX_H
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