qt5base-lts/tests/auto/testlib/selftests/benchlibcallgrind/tst_benchlibcallgrind.cpp

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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/QCoreApplication>
#include <QtTest/QtTest>
/* This test must be explicitly enabled since there are no compile tests for valgrind.h */
#ifdef QT_BUG236484
#include <valgrind/valgrind.h>
#endif
class tst_BenchlibCallgrind: public QObject
{
Q_OBJECT
private slots:
#ifdef QT_BUG236484
void failInChildProcess();
#endif
void twoHundredMillionInstructions();
};
#ifdef QT_BUG236484
void tst_BenchlibCallgrind::failInChildProcess()
{
static double f = 1.0;
QBENCHMARK {
for (int i = 0; i < 1000000; ++i) {
f *= 1.1;
if (RUNNING_ON_VALGRIND) QFAIL("Running under valgrind!");
}
}
}
#endif
void tst_BenchlibCallgrind::twoHundredMillionInstructions()
{
#if !defined(__GNUC__) || !defined(__i386)
QSKIP("This test is only defined for gcc and x86.");
#else
QBENCHMARK {
__asm__ __volatile__(
"mov $100000000,%%eax \n"
"1: \n"
"dec %%eax \n"
"jnz 1b \n"
: /* no output */
: /* no input */
: /* clobber */ "eax"
);
}
#endif
}
QTEST_MAIN(tst_BenchlibCallgrind)
#include "tst_benchlibcallgrind.moc"