include/QtCore/qwaitcondition.h

0001 // Copyright (C) 2016 The Qt Company Ltd.
0002 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
0003
0004 #ifndef QWAITCONDITION_H
0005 #define QWAITCONDITION_H
0006
0007 #include <QtCore/QDeadlineTimer>
0008
0009 QT_BEGIN_NAMESPACE
0010
0011 #if QT_CONFIG(thread)
0012
0013 class QWaitConditionPrivate;
0014 class QMutex;
0015 class QReadWriteLock;
0016
0017 class Q_CORE_EXPORT QWaitCondition
0018 {
0019 public:
0020     QWaitCondition();
0021     ~QWaitCondition();
0022
0023     bool wait(QMutex *lockedMutex,
0024               QDeadlineTimer deadline = QDeadlineTimer(QDeadlineTimer::Forever));
0025     bool wait(QMutex *lockedMutex, unsigned long time);
0026
0027     bool wait(QReadWriteLock *lockedReadWriteLock,
0028               QDeadlineTimer deadline = QDeadlineTimer(QDeadlineTimer::Forever));
0029     bool wait(QReadWriteLock *lockedReadWriteLock, unsigned long time);
0030
0031     void wakeOne();
0032     void wakeAll();
0033
0034     void notify_one() { wakeOne(); }
0035     void notify_all() { wakeAll(); }
0036
0037 private:
0038     Q_DISABLE_COPY(QWaitCondition)
0039
0040     QWaitConditionPrivate *d;
0041 };
0042
0043 #else
0044
0045 class QMutex;
0046 class QReadWriteLock;
0047
0048 class Q_CORE_EXPORT QWaitCondition
0049 {
0050 public:
0051     QWaitCondition() {}
0052     ~QWaitCondition() {}
0053
0054     bool wait(QMutex *, QDeadlineTimer = QDeadlineTimer(QDeadlineTimer::Forever))
0055     { return true; }
0056     bool wait(QReadWriteLock *, QDeadlineTimer = QDeadlineTimer(QDeadlineTimer::Forever))
0057     { return true; }
0058     bool wait(QMutex *, unsigned long) { return true; }
0059     bool wait(QReadWriteLock *, unsigned long) { return true; }
0060
0061     void wakeOne() {}
0062     void wakeAll() {}
0063
0064     void notify_one() { wakeOne(); }
0065     void notify_all() { wakeAll(); }
0066 };
0067
0068 #endif // QT_CONFIG(thread)
0069
0070 QT_END_NAMESPACE
0071
0072 #endif // QWAITCONDITION_H