diff options
Diffstat (limited to 'tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp')
-rw-r--r-- | tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp b/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp new file mode 100644 index 0000000000..cc8b3a454f --- /dev/null +++ b/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp @@ -0,0 +1,80 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QtCore> +#include <QtTest/QtTest> + +#include <private/cycle_p.h> + +class tst_BenchlibTickCounter: public QObject +{ + Q_OBJECT + +private slots: + void threeBillionTicks(); +}; + +void tst_BenchlibTickCounter::threeBillionTicks() +{ +#ifndef HAVE_TICK_COUNTER + QSKIP("Tick counter not available on this platform", SkipAll); +#else + QBENCHMARK { + CycleCounterTicks start = getticks(); + double el = 0.; + double max = el; + while (el < 3000000000.) { + /* Verify that elapsed time never decreases */ + QVERIFY2(el >= max, qPrintable( + QString("Tick counter is not monotonic\nElapsed moved from %1 to %2") + .arg(max).arg(el) + )); + max = el; + el = elapsed(getticks(), start); + } + } +#endif +} + +QTEST_MAIN(tst_BenchlibTickCounter) + +#include "tst_benchlibtickcounter.moc" |