diff options
author | Sergio Ahumada <sergio.ahumada@digia.com> | 2013-03-20 23:30:31 +0100 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-03-20 23:30:31 +0100 |
commit | e5a11fbb3251a98fafd6bebf0b6fc366acb19088 (patch) | |
tree | 8e1bd6704205307e0a23484221ea1bb67a9f411e /tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp | |
parent | 0646d1131b4bc65cdd9af29f4ce00fdd2398a3df (diff) | |
parent | 76c0be34cd4ff4564693162fa7528463e23ce9d8 (diff) |
Merge "Merge branch 'dev' into stable" into refs/staging/stable
Diffstat (limited to 'tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp')
-rw-r--r-- | tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp b/tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp new file mode 100644 index 0000000000..131b37f821 --- /dev/null +++ b/tests/auto/corelib/global/qglobalstatic/tst_qglobalstatic.cpp @@ -0,0 +1,236 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Thiago Macieira <thiago@kde.org> +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/QThread> +#include <QtTest/QtTest> + +class tst_QGlobalStatic : public QObject +{ + Q_OBJECT + +private Q_SLOTS: + void beforeInitialization(); + void api(); + void constVolatile(); + void exception(); + void threadedException(); + void threadStressTest(); + void afterDestruction(); +}; + +Q_GLOBAL_STATIC_WITH_ARGS(const int, constInt, (42)) +Q_GLOBAL_STATIC_WITH_ARGS(volatile int, volatileInt, (-47)) + +void otherFunction() +{ + // never called + constInt(); + volatileInt(); +} + +// do not initialize the following Q_GLOBAL_STATIC +Q_GLOBAL_STATIC(int, checkedBeforeInitialization) +void tst_QGlobalStatic::beforeInitialization() +{ + QVERIFY(!checkedBeforeInitialization.exists()); + QVERIFY(!checkedBeforeInitialization.isDestroyed()); +} + +struct Type { + int i; +}; + +Q_GLOBAL_STATIC(Type, checkedAfterInitialization) +void tst_QGlobalStatic::api() +{ + // check the API + QVERIFY((Type *)checkedAfterInitialization); + QVERIFY(checkedAfterInitialization()); + *checkedAfterInitialization = Type(); + *checkedAfterInitialization() = Type(); + + checkedAfterInitialization()->i = 47; + checkedAfterInitialization->i = 42; + QCOMPARE(checkedAfterInitialization()->i, 42); + checkedAfterInitialization()->i = 47; + QCOMPARE(checkedAfterInitialization->i, 47); + + QVERIFY(checkedAfterInitialization.exists()); + QVERIFY(!checkedAfterInitialization.isDestroyed()); +} + +void tst_QGlobalStatic::constVolatile() +{ + QCOMPARE(*constInt(), 42); + QCOMPARE((int)*volatileInt(), -47); + QCOMPARE(*constInt(), 42); + QCOMPARE((int)*volatileInt(), -47); +} + +struct ThrowingType +{ + static QBasicAtomicInt constructedCount; + static QBasicAtomicInt destructedCount; + ThrowingType() + { + throw 0; + } + + ThrowingType(QBasicAtomicInt &throwControl) + { + constructedCount.ref(); + if (throwControl.fetchAndAddRelaxed(-1) != 0) + throw 0; + } + ~ThrowingType() { destructedCount.ref(); } +}; + +QBasicAtomicInt ThrowingType::constructedCount = Q_BASIC_ATOMIC_INITIALIZER(0); +QBasicAtomicInt ThrowingType::destructedCount = Q_BASIC_ATOMIC_INITIALIZER(0); + +Q_GLOBAL_STATIC(ThrowingType, throwingGS) +void tst_QGlobalStatic::exception() +{ + bool exceptionCaught = false; + try { + throwingGS(); + } catch (int) { + exceptionCaught = true; + } + QVERIFY(exceptionCaught); + QCOMPARE(Q_QGS_throwingGS::guard.load(), 0); + QVERIFY(!throwingGS.exists()); + QVERIFY(!throwingGS.isDestroyed()); +} + +QBasicAtomicInt exceptionControlVar = Q_BASIC_ATOMIC_INITIALIZER(1); +Q_GLOBAL_STATIC_WITH_ARGS(ThrowingType, exceptionGS, (exceptionControlVar)) +void tst_QGlobalStatic::threadedException() +{ + if (exceptionControlVar.load() != 1) + QSKIP("This test cannot be run more than once"); + ThrowingType::constructedCount.store(0); + ThrowingType::destructedCount.store(0); + + bool exceptionCaught = false; + try { + exceptionGS(); + } catch (int) { + exceptionCaught = true; + } + QCOMPARE(ThrowingType::constructedCount.load(), 1); + QVERIFY(exceptionCaught); + + exceptionGS(); + QCOMPARE(ThrowingType::constructedCount.load(), 2); +} + +QBasicAtomicInt threadStressTestControlVar = Q_BASIC_ATOMIC_INITIALIZER(5); +Q_GLOBAL_STATIC_WITH_ARGS(ThrowingType, threadStressTestGS, (threadStressTestControlVar)) + + +void tst_QGlobalStatic::threadStressTest() +{ + class ThreadStressTestThread: public QThread + { + public: + QReadWriteLock *lock; + void run() + { + QReadLocker l(lock); + //usleep(qrand() * 200 / RAND_MAX); + // thundering herd + try { + threadStressTestGS(); + } catch (int) { + } + } + }; + + ThrowingType::constructedCount.store(0); + ThrowingType::destructedCount.store(0); + int expectedConstructionCount = threadStressTestControlVar.load() + 1; + if (expectedConstructionCount <= 0) + QSKIP("This test cannot be run more than once"); + + const int numThreads = 200; + ThreadStressTestThread threads[numThreads]; + QReadWriteLock lock; + lock.lockForWrite(); + for (int i = 0; i < numThreads; ++i) { + threads[i].lock = &lock; + threads[i].start(); + } + + // wait for all threads + // release the herd + lock.unlock(); + + for (int i = 0; i < numThreads; ++i) + threads[i].wait(); + + QCOMPARE(ThrowingType::constructedCount.loadAcquire(), expectedConstructionCount); + QCOMPARE(ThrowingType::destructedCount.loadAcquire(), 0); +} + +Q_GLOBAL_STATIC(int, checkedAfterDestruction) +void tst_QGlobalStatic::afterDestruction() +{ + // this test will not produce results now + // it will simply run some code on destruction (after the global statics have been deleted) + // if that fails, this will cause a crash + + // static destruction is LIFO: so we must add our exit-time code before the + // global static is used for the first time + static struct RunAtExit { + ~RunAtExit() { + int *ptr = checkedAfterDestruction(); + if (ptr) + qFatal("Global static is not null as was expected"); + } + } runAtExit; + (void) runAtExit; + + *checkedAfterDestruction = 42; +} + +QTEST_APPLESS_MAIN(tst_QGlobalStatic); + +#include "tst_qglobalstatic.moc" |