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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QCoreApplication>
#include <QWriteLocker>
#include <QSemaphore>
#include <QThread>
//TESTED_CLASS=
//TESTED_FILES=
class tst_QWriteLockerThread : public QThread
{
public:
QReadWriteLock lock;
QSemaphore semaphore, testSemaphore;
void waitForTest()
{
semaphore.release();
testSemaphore.acquire();
}
};
class tst_QWriteLocker : public QObject
{
Q_OBJECT
public:
tst_QWriteLocker();
~tst_QWriteLocker();
tst_QWriteLockerThread *thread;
void waitForThread()
{
thread->semaphore.acquire();
}
void releaseThread()
{
thread->testSemaphore.release();
}
private slots:
void scopeTest();
void unlockAndRelockTest();
void lockerStateTest();
};
tst_QWriteLocker::tst_QWriteLocker()
{
}
tst_QWriteLocker::~tst_QWriteLocker()
{
}
void tst_QWriteLocker::scopeTest()
{
class ScopeTestThread : public tst_QWriteLockerThread
{
public:
void run()
{
waitForTest();
{
QWriteLocker locker(&lock);
waitForTest();
}
waitForTest();
}
};
thread = new ScopeTestThread;
thread->start();
waitForThread();
// lock should be unlocked before entering the scope that creates the QWriteLocker
QVERIFY(thread->lock.tryLockForWrite());
thread->lock.unlock();
releaseThread();
waitForThread();
// lock should be locked by the QWriteLocker
QVERIFY(!thread->lock.tryLockForWrite());
releaseThread();
waitForThread();
// lock should be unlocked when the QWriteLocker goes out of scope
QVERIFY(thread->lock.tryLockForWrite());
thread->lock.unlock();
releaseThread();
QVERIFY(thread->wait());
delete thread;
thread = 0;
}
void tst_QWriteLocker::unlockAndRelockTest()
{
class UnlockAndRelockThread : public tst_QWriteLockerThread
{
public:
void run()
{
QWriteLocker locker(&lock);
waitForTest();
locker.unlock();
waitForTest();
locker.relock();
waitForTest();
}
};
thread = new UnlockAndRelockThread;
thread->start();
waitForThread();
// lock should be locked by the QWriteLocker
QVERIFY(!thread->lock.tryLockForWrite());
releaseThread();
waitForThread();
// lock has been explicitly unlocked via QWriteLocker
QVERIFY(thread->lock.tryLockForWrite());
thread->lock.unlock();
releaseThread();
waitForThread();
// lock has been explicity relocked via QWriteLocker
QVERIFY(!thread->lock.tryLockForWrite());
releaseThread();
QVERIFY(thread->wait());
delete thread;
thread = 0;
}
void tst_QWriteLocker::lockerStateTest()
{
class LockerStateThread : public tst_QWriteLockerThread
{
public:
void run()
{
{
QWriteLocker locker(&lock);
locker.relock();
locker.unlock();
waitForTest();
}
waitForTest();
}
};
thread = new LockerStateThread;
thread->start();
waitForThread();
// even though we relock() after creating the QWriteLocker, it shouldn't lock the lock more than once
QVERIFY(thread->lock.tryLockForWrite());
thread->lock.unlock();
releaseThread();
waitForThread();
// if we call QWriteLocker::unlock(), its destructor should do nothing
QVERIFY(thread->lock.tryLockForWrite());
thread->lock.unlock();
releaseThread();
QVERIFY(thread->wait());
delete thread;
thread = 0;
}
QTEST_MAIN(tst_QWriteLocker)
#include "tst_qwritelocker.moc"
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