/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/

#ifndef QWAITCONDITION_H
#define QWAITCONDITION_H

#include <QtCore/qglobal.h>

#include <limits.h>

QT_BEGIN_NAMESPACE


#ifndef QT_NO_THREAD

class QWaitConditionPrivate;
class QMutex;
class QReadWriteLock;

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

    bool wait(QMutex *lockedMutex, unsigned long time = ULONG_MAX);
    bool wait(QReadWriteLock *lockedReadWriteLock, 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

#endif // QWAITCONDITION_H