/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtTest module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "QtTest/qbenchmark.h"+
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#include "QtTest/private/qbenchmark_p.h"+
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#include "QtTest/private/qbenchmarkmetric_p.h"+
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+
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#ifdef QT_GUI_LIB+
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#include <QtGui/qapplication.h>+
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#endif+
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+
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#include <QtCore/qprocess.h>+
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#include <QtCore/qdir.h>+
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#include <QtCore/qset.h>+
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#include <QtCore/qdebug.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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QBenchmarkGlobalData *QBenchmarkGlobalData::current;+
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+
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QBenchmarkGlobalData::QBenchmarkGlobalData()+
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    : measurer(0)+
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    , walltimeMinimum(-1)+
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    , iterationCount(-1)+
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    , medianIterationCount(-1)+
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    , createChart(false)+
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    , verboseOutput(false)+
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    , mode_(WallTime)+
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{+
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    setMode(mode_);+
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}+
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+
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QBenchmarkGlobalData::~QBenchmarkGlobalData()+
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{+
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    delete measurer;+
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    QBenchmarkGlobalData::current = 0;+
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}+
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+
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void QBenchmarkGlobalData::setMode(Mode mode)+
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{+
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    mode_ = mode;+
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+
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    if (measurer)+
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        delete measurer;+
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    measurer = createMeasurer();+
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}+
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+
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QBenchmarkMeasurerBase * QBenchmarkGlobalData::createMeasurer()+
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{+
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    QBenchmarkMeasurerBase *measurer = 0;+
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    if (0) {+
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#ifdef QTESTLIB_USE_VALGRIND+
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    } else if (mode_ == CallgrindChildProcess || mode_ == CallgrindParentProcess) {+
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        measurer = new QBenchmarkCallgrindMeasurer;+
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#endif+
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#ifdef HAVE_TICK_COUNTER+
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    } else if (mode_ == TickCounter) {+
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        measurer = new QBenchmarkTickMeasurer;+
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#endif+
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    } else if (mode_ == EventCounter) {+
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        measurer = new QBenchmarkEvent;+
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    } else {+
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        measurer =  new QBenchmarkTimeMeasurer;+
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    }+
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    measurer->init();+
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    return measurer;+
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}+
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+
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int QBenchmarkGlobalData::adjustMedianIterationCount()+
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{+
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    if (medianIterationCount != -1) {+
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        return medianIterationCount;+
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    } else {+
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        return measurer->adjustMedianCount(1);+
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    }+
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}+
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+
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+
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QBenchmarkTestMethodData *QBenchmarkTestMethodData::current;+
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+
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QBenchmarkTestMethodData::QBenchmarkTestMethodData()+
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:resultAccepted(false), runOnce(false), iterationCount(-1)+
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{+
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   +
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}+
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+
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QBenchmarkTestMethodData::~QBenchmarkTestMethodData()+
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{+
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    QBenchmarkTestMethodData::current = 0;+
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}+
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+
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void QBenchmarkTestMethodData::beginDataRun()+
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{+
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    iterationCount = adjustIterationCount(1);+
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}+
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+
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void QBenchmarkTestMethodData::endDataRun()+
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{+
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+
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}+
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+
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int QBenchmarkTestMethodData::adjustIterationCount(int suggestion)+
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{+
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    // Let the -iterations option override the measurer.+
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    if (QBenchmarkGlobalData::current->iterationCount != -1) {+
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        iterationCount = QBenchmarkGlobalData::current->iterationCount;+
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    } else {+
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        iterationCount = QBenchmarkGlobalData::current->measurer->adjustIterationCount(suggestion);+
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    }+
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+
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    return iterationCount;+
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}+
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+
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void QBenchmarkTestMethodData::setResult(+
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    qreal value, QTest::QBenchmarkMetric metric, bool setByMacro)+
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{+
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    bool accepted = false;+
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+
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    // Always accept the result if the iteration count has been+
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    // specified on the command line with -iterations.+
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    if (QBenchmarkGlobalData::current->iterationCount != -1)+
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        accepted = true;+
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+
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    else if (QBenchmarkTestMethodData::current->runOnce || !setByMacro) {+
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        iterationCount = 1;+
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        accepted = true;+
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    }+
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+
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    // Test the result directly without calling the measurer if the minimum time +
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    // has been specifed on the command line with -minimumvalue.+
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    else if (QBenchmarkGlobalData::current->walltimeMinimum != -1)+
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        accepted = (value > QBenchmarkGlobalData::current->walltimeMinimum);+
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    else+
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        accepted = QBenchmarkGlobalData::current->measurer->isMeasurementAccepted(value);+
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+
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    // Accept the result or double the number of iterations.+
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    if (accepted)+
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        resultAccepted = true;+
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    else+
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        iterationCount *= 2;+
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+
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    this->result = QBenchmarkResult(+
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        QBenchmarkGlobalData::current->context, value, iterationCount, metric, setByMacro);+
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}+
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+
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/*!+
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    \class QTest::QBenchmarkIterationController+
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    \internal+
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+
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    The QBenchmarkIterationController class is used by the QBENCHMARK macro to+
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    drive the benchmarking loop. It is repsonsible for starting and stopping+
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    the timing measurements as well as calling the result reporting functions.+
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*/+
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+
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/*! \internal+
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*/+
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QTest::QBenchmarkIterationController::QBenchmarkIterationController(RunMode runMode)+
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{+
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    i = 0;+
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    if (runMode == RunOnce)+
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        QBenchmarkTestMethodData::current->runOnce = true;    +
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    QTest::beginBenchmarkMeasurement();+
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}+
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+
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QTest::QBenchmarkIterationController::QBenchmarkIterationController()+
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{+
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    i = 0;+
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    QTest::beginBenchmarkMeasurement();+
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}+
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+
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/*! \internal+
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*/+
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QTest::QBenchmarkIterationController::~QBenchmarkIterationController()+
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{+
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    const qreal result = QTest::endBenchmarkMeasurement();+
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    QBenchmarkTestMethodData::current->setResult(result, QBenchmarkGlobalData::current->measurer->metricType());+
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}+
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+
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/*! \internal+
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*/+
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bool QTest::QBenchmarkIterationController::isDone()+
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{+
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    if (QBenchmarkTestMethodData::current->runOnce)+
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        return i > 0;+
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    return i >= QTest::iterationCount();+
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}+
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+
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/*! \internal+
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*/+
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void QTest::QBenchmarkIterationController::next()+
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{+
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    ++i;+
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}+
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+
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/*! \internal+
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*/+
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int QTest::iterationCount()+
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{+
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    return QBenchmarkTestMethodData::current->iterationCount;+
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}+
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+
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/*! \internal+
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*/+
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void QTest::setIterationCountHint(int count)+
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{+
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    QBenchmarkTestMethodData::current->adjustIterationCount(count);+
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}+
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+
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/*! \internal+
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*/+
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void QTest::setIterationCount(int count)+
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{+
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    QBenchmarkTestMethodData::current->iterationCount = count;+
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    QBenchmarkTestMethodData::current->resultAccepted = true;+
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}+
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+
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/*! \internal+
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*/+
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void QTest::beginBenchmarkMeasurement()+
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{+
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    QBenchmarkGlobalData::current->measurer->start();+
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    // the clock is ticking after the line above, don't add code here.+
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}+
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+
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/*! \internal+
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*/+
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quint64 QTest::endBenchmarkMeasurement()+
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{+
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    // the clock is ticking before the line below, don't add code here.+
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    return QBenchmarkGlobalData::current->measurer->stop();    +
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}+
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+
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/*!+
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    Sets the benchmark result for this test function to \a result.+
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 +
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    Use this function if you want to report benchmark results without+
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    using the QBENCHMARK macro. Use \a metric to specify how QTestLib+
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    should interpret the results.+
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 +
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    The context for the result will be the test function name and any+
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    data tag from the _data function. This function can only be called+
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    once in each test function, subsequent calls will replace the+
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    earlier reported results.+
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+
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    Note that the -iterations command line argument has no effect+
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    on test functions without the QBENCHMARK macro.+
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+
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    \since 4.7+
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*/+
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void QTest::setBenchmarkResult(qreal result, QTest::QBenchmarkMetric metric)+
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{+
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    QBenchmarkTestMethodData::current->setResult(result, metric, false);+
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}+
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+
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template <typename T>+
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Q_TYPENAME T::value_type qAverage(const T &container)+
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{+
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    Q_TYPENAME T::const_iterator it = container.constBegin();+
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    Q_TYPENAME T::const_iterator end = container.constEnd();+
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    Q_TYPENAME T::value_type acc = Q_TYPENAME T::value_type();+
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    int count = 0;+
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    while (it != end) {+
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        acc += *it;+
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        ++it;+
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        ++count;+
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    }+
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    return acc / count;+
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}+
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+
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QT_END_NAMESPACE+
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