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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMUTEX_P_H
#define QMUTEX_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of qmutex.cpp, qmutex_unix.cpp, and qmutex_win.cpp. This header
// file may change from version to version without notice, or even be
// removed.
//
// We mean it.
//
#include <QtCore/qglobal.h>
#include <QtCore/qnamespace.h>
#include <QtCore/qmutex.h>
#if defined(Q_OS_MAC)
# include <mach/semaphore.h>
#endif
QT_BEGIN_NAMESPACE
class QMutexPrivate : public QMutexData {
public:
QMutexPrivate(QMutex::RecursionMode mode);
~QMutexPrivate();
bool wait(int timeout = -1);
void wakeUp();
// 1ms = 1000000ns
enum { MaximumSpinTimeThreshold = 1000000 };
volatile qint64 maximumSpinTime;
volatile qint64 averageWaitTime;
Qt::HANDLE owner;
uint count;
#if defined(Q_OS_MAC)
semaphore_t mach_semaphore;
#elif defined(Q_OS_UNIX) && !defined(Q_OS_LINUX)
volatile bool wakeup;
pthread_mutex_t mutex;
pthread_cond_t cond;
#elif defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
HANDLE event;
#endif
};
inline QMutexData::QMutexData(QMutex::RecursionMode mode)
: recursive(mode == QMutex::Recursive)
{}
inline QMutexData::~QMutexData() {}
QT_END_NAMESPACE
#endif // QMUTEX_P_H
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