/****************************************************************************
**
** Copyright (C) 2011 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the 
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
** 
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
****************************************************************************/

#ifndef QWAITCONDITION_H
#define QWAITCONDITION_H

#include <QtCore/qglobal.h>

#include <limits.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifndef QT_NO_THREAD

class QWaitConditionPrivate;
class QMutex;
class QReadWriteLock;

class Q_CORE_EXPORT QWaitCondition
{
public:
    QWaitCondition();
    ~QWaitCondition();

    bool wait(QMutex *mutex, unsigned long time = ULONG_MAX);
    bool wait(QReadWriteLock *readWriteLock, unsigned long time = ULONG_MAX);

    void wakeOne();
    void wakeAll();

private:
    Q_DISABLE_COPY(QWaitCondition)

    QWaitConditionPrivate * d;
};

#else

class QMutex;
class Q_CORE_EXPORT QWaitCondition
{
public:
    QWaitCondition() {}
    ~QWaitCondition() {}

    bool wait(QMutex *mutex, unsigned long time = ULONG_MAX)
    {
	Q_UNUSED(mutex);
	Q_UNUSED(time);
	return true;
    }

    void wakeOne() {}
    void wakeAll() {}
};

#endif // QT_NO_THREAD

QT_END_NAMESPACE

QT_END_HEADER

#endif // QWAITCONDITION_H
