From 38be0d13830efd2d98281c645c3a60afe05ffece Mon Sep 17 00:00:00 2001 From: Qt by Nokia Date: Wed, 27 Apr 2011 12:05:43 +0200 Subject: Initial import from the monolithic Qt. This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12 --- .../thread/qwaitcondition/tst_qwaitcondition.cpp | 210 +++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp (limited to 'tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp') diff --git a/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp b/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp new file mode 100644 index 0000000000..1bfc637402 --- /dev/null +++ b/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp @@ -0,0 +1,210 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 +#include + +#include + + +class tst_QWaitCondition : public QObject +{ + Q_OBJECT + +public: + tst_QWaitCondition() + { + } + +private slots: + void oscillate_data(); + void oscillate(); + + void thrash_data(); + void thrash(); + +public: + static QWaitCondition local, remote; + enum Turn {LocalTurn, RemoteTurn}; + static Turn turn; +}; + +QWaitCondition tst_QWaitCondition::local; +QWaitCondition tst_QWaitCondition::remote; +tst_QWaitCondition::Turn tst_QWaitCondition::turn = tst_QWaitCondition::LocalTurn; + +class OscillateThread : public QThread +{ +public: + bool m_done; + bool m_useMutex; + unsigned long m_timeout; + bool m_wakeOne; + int count; + + OscillateThread(bool useMutex, unsigned long timeout, bool wakeOne) + : m_done(false), m_useMutex(useMutex), m_timeout(timeout), m_wakeOne(wakeOne) + {} + void run() + { + QMutex mtx; + QReadWriteLock rwl; + count = 0; + + forever { + if (m_done) + break; + if (m_useMutex) { + mtx.lock(); + while (tst_QWaitCondition::turn == tst_QWaitCondition::LocalTurn) + tst_QWaitCondition::remote.wait(&mtx, m_timeout); + mtx.unlock(); + } else { + rwl.lockForWrite(); + while (tst_QWaitCondition::turn == tst_QWaitCondition::LocalTurn) + tst_QWaitCondition::remote.wait(&rwl, m_timeout); + rwl.unlock(); + } + tst_QWaitCondition::turn = tst_QWaitCondition::LocalTurn; + if (m_wakeOne) + tst_QWaitCondition::local.wakeOne(); + else + tst_QWaitCondition::local.wakeAll(); + count++; + } + } +}; + +void tst_QWaitCondition::oscillate_data() +{ + QTest::addColumn("useMutex"); + QTest::addColumn("timeout"); + QTest::addColumn("wakeOne"); + + QTest::newRow("mutex, timeout, one") << true << 1000ul << true; + QTest::newRow("readWriteLock, timeout, one") << false << 1000ul << true; + QTest::newRow("mutex, timeout, all") << true << 1000ul << false; + QTest::newRow("readWriteLock, timeout, all") << false << 1000ul << false; + QTest::newRow("mutex, forever, one") << true << ULONG_MAX << true; + QTest::newRow("readWriteLock, forever, one") << false << ULONG_MAX << true; + QTest::newRow("mutex, forever, all") << true << ULONG_MAX << false; + QTest::newRow("readWriteLock, forever, all") << false << ULONG_MAX << false; +} + +void tst_QWaitCondition::oscillate() +{ + QMutex mtx; + QReadWriteLock rwl; + + QFETCH(bool, useMutex); + QFETCH(unsigned long, timeout); + QFETCH(bool, wakeOne); + + turn = LocalTurn; + OscillateThread thrd(useMutex, timeout, wakeOne); + thrd.start(); + + QBENCHMARK { + if (useMutex) + mtx.lock(); + else + rwl.lockForWrite(); + turn = RemoteTurn; + if (wakeOne) + remote.wakeOne(); + else + remote.wakeAll(); + if (useMutex) { + while (turn == RemoteTurn) + local.wait(&mtx, timeout); + mtx.unlock(); + } else { + while (turn == RemoteTurn) + local.wait(&rwl, timeout); + rwl.unlock(); + } + } + + thrd.m_done = true; + remote.wakeAll(); + thrd.wait(); + + QCOMPARE(0, 0); +} + +void tst_QWaitCondition::thrash_data() +{ + oscillate_data(); +} + +void tst_QWaitCondition::thrash() +{ + QMutex mtx; + mtx.lock(); + + QFETCH(bool, useMutex); + QFETCH(unsigned long, timeout); + QFETCH(bool, wakeOne); + + turn = LocalTurn; + OscillateThread thrd(useMutex, timeout, wakeOne); + thrd.start(); + local.wait(&mtx, 1000ul); + mtx.unlock(); + + QBENCHMARK { + turn = RemoteTurn; + if (wakeOne) + remote.wakeOne(); + else + remote.wakeAll(); + } + + thrd.m_done = true; + turn = RemoteTurn; + remote.wakeAll(); + thrd.wait(); + + QCOMPARE(0, 0); +} + +QTEST_MAIN(tst_QWaitCondition) +#include "tst_qwaitcondition.moc" -- cgit v1.2.3