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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QtCore>
#include <QtTest/QtTest>
#include <math.h>
class tst_QWaitCondition : public QObject
{
Q_OBJECT
public:
tst_QWaitCondition()
{
}
private slots:
void oscillate_mutex_data();
void oscillate_mutex();
void oscillate_writelock_data();
void oscillate_writelock();
};
int turn;
const int threadCount = 10;
QWaitCondition cond;
template <class Mutex, class Locker>
class OscillateThread : public QThread
{
public:
Mutex *mutex;
int m_threadid;
int timeout;
void run()
{
for (int count = 0; count < 5000; ++count) {
Locker lock(mutex);
while (m_threadid != turn) {
cond.wait(mutex, timeout);
}
turn = (turn+1) % threadCount;
cond.wakeAll();
}
}
};
template <class Mutex, class Locker>
void oscillate(unsigned long timeout) {
OscillateThread<Mutex, Locker> thrd[threadCount];
Mutex m;
for (int i = 0; i < threadCount; ++i) {
thrd[i].mutex = &m;
thrd[i].m_threadid = i;
thrd[i].timeout = timeout;
}
QBENCHMARK {
for (int i = 0; i < threadCount; ++i) {
thrd[i].start();
}
for (int i = 0; i < threadCount; ++i) {
thrd[i].wait();
}
}
}
void tst_QWaitCondition::oscillate_mutex_data()
{
QTest::addColumn<unsigned long>("timeout");
QTest::newRow("0") << 0ul;
QTest::newRow("1") << 1ul;
QTest::newRow("1000") << 1000ul;
QTest::newRow("forever") << ULONG_MAX;
}
void tst_QWaitCondition::oscillate_mutex()
{
QFETCH(unsigned long, timeout);
oscillate<QMutex, QMutexLocker>(timeout);
}
void tst_QWaitCondition::oscillate_writelock_data()
{
oscillate_mutex_data();
}
void tst_QWaitCondition::oscillate_writelock()
{
QFETCH(unsigned long, timeout);
oscillate<QReadWriteLock, QWriteLocker>(timeout);
}
QTEST_MAIN(tst_QWaitCondition)
#include "tst_qwaitcondition.moc"
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