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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2011 Thiago Macieira <thiago@kde.org>
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QATOMIC_BOOTSTRAP_H
#define QATOMIC_BOOTSTRAP_H
#include <QtCore/qgenericatomic.h>
QT_BEGIN_NAMESPACE
#if 0
// silence syncqt warnings
QT_END_NAMESPACE
#pragma qt_sync_skip_header_check
#pragma qt_sync_stop_processing
#endif
template <typename T> struct QAtomicOps: QGenericAtomicOps<QAtomicOps<T> >
{
typedef T Type;
static bool ref(T &_q_value) Q_DECL_NOTHROW
{
return ++_q_value != 0;
}
static bool deref(T &_q_value) Q_DECL_NOTHROW
{
return --_q_value != 0;
}
static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue = 0) Q_DECL_NOTHROW
{
if (currentValue)
*currentValue = _q_value;
if (_q_value == expectedValue) {
_q_value = newValue;
return true;
}
return false;
}
static T fetchAndStoreRelaxed(T &_q_value, T newValue) Q_DECL_NOTHROW
{
T tmp = _q_value;
_q_value = newValue;
return tmp;
}
template <typename AdditiveType> static
T fetchAndAddRelaxed(T &_q_value, AdditiveType valueToAdd) Q_DECL_NOTHROW
{
T returnValue = _q_value;
_q_value += valueToAdd;
return returnValue;
}
};
QT_END_NAMESPACE
#endif // QATOMIC_BOOTSTRAP_H
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