qwaitcondition.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QWAITCONDITION_H
#define QWAITCONDITION_H
 
#include <QtCore/QDeadlineTimer>
 
QT_BEGIN_NAMESPACE
 
#if QT_CONFIG(thread)
 
class QWaitConditionPrivate;
class QMutex;
class QReadWriteLock;
 
class Q_CORE_EXPORT QWaitCondition
{
public:
    QWaitCondition();
    ~QWaitCondition();
 
    bool wait(QMutex *lockedMutex,
              QDeadlineTimer deadline = QDeadlineTimer(QDeadlineTimer::Forever));
    bool wait(QMutex *lockedMutex, unsigned long time);
 
    bool wait(QReadWriteLock *lockedReadWriteLock,
              QDeadlineTimer deadline = QDeadlineTimer(QDeadlineTimer::Forever));
    bool wait(QReadWriteLock *lockedReadWriteLock, unsigned long time);
 
    void wakeOne();
    void wakeAll();
 
    void notify_one() { wakeOne(); }
    void notify_all() { wakeAll(); }
 
private:
    Q_DISABLE_COPY(QWaitCondition)
 
    QWaitConditionPrivate *d;
};
 
#else
 
class QMutex;
class QReadWriteLock;
 
class Q_CORE_EXPORT QWaitCondition
{
public:
    QWaitCondition() {}
    ~QWaitCondition() {}
 
    bool wait(QMutex *, QDeadlineTimer = QDeadlineTimer(QDeadlineTimer::Forever))
    { return true; }
    bool wait(QReadWriteLock *, QDeadlineTimer = QDeadlineTimer(QDeadlineTimer::Forever))
    { return true; }
    bool wait(QMutex *, unsigned long) { return true; }
    bool wait(QReadWriteLock *, unsigned long) { return true; }
 
    void wakeOne() {}
    void wakeAll() {}
 
    void notify_one() { wakeOne(); }
    void notify_all() { wakeAll(); }
};
 
#endif // QT_CONFIG(thread)
 
QT_END_NAMESPACE
 
#endif // QWAITCONDITION_H