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48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QtCore/QCoreApplication>
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#include <QTest>
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#include <private/cycle_p.h>
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class tst_BenchlibTickCounter: public QObject
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{
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Q_OBJECT
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private slots:
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void threeBillionTicks();
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};
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void tst_BenchlibTickCounter::threeBillionTicks()
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{
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#ifndef HAVE_TICK_COUNTER
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QSKIP("Tick counter not available on this platform");
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#else
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QBENCHMARK {
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CycleCounterTicks start = getticks();
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double el = 0.;
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double max = el;
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while (el < 3000000000.) {
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/* Verify that elapsed time never decreases */
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QVERIFY2(el >= max, qPrintable(
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QString("Tick counter is not monotonic\nElapsed moved from %1 to %2")
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.arg(max).arg(el)
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));
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max = el;
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el = elapsed(getticks(), start);
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}
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}
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#endif
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}
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QTEST_MAIN_WRAPPER(tst_BenchlibTickCounter,
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std::vector<const char*> args(argv, argv + argc);
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args.push_back("-tickcounter");
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argc = int(args.size());
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argv = const_cast<char**>(&args[0]);
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QTEST_MAIN_SETUP())
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#include "tst_benchlibtickcounter.moc"
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