qt-everywhere-src-5.14.1/qtbase/src/testlib/qbenchmarktimemeasurers_p.h

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#ifndef QBENCHMARKTIMEMEASURERS_P_H
#define QBENCHMARKTIMEMEASURERS_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtTest/private/qbenchmarkmeasurement_p.h>
#include <QtCore/qelapsedtimer.h>
#include <QtTest/private/cycle_p.h>

QT_BEGIN_NAMESPACE

class QBenchmarkTimeMeasurer : public QBenchmarkMeasurerBase
{
public:
    void start() override;
    qint64 checkpoint() override;
    qint64 stop() override;
    bool isMeasurementAccepted(qint64 measurement) override;
    int adjustIterationCount(int sugestion) override;
    int adjustMedianCount(int suggestion) override;
    bool needsWarmupIteration() override;
    QTest::QBenchmarkMetric metricType() override;
private:
    QElapsedTimer time;
};

#ifdef HAVE_TICK_COUNTER // defined in 3rdparty/cycle_p.h

class QBenchmarkTickMeasurer : public QBenchmarkMeasurerBase
{
public:
    void start() override;
    qint64 checkpoint() override;
    qint64 stop() override;
    bool isMeasurementAccepted(qint64 measurement) override;
    int adjustIterationCount(int) override;
    int adjustMedianCount(int suggestion) override;
    bool needsWarmupIteration() override;
    QTest::QBenchmarkMetric metricType() override;
private:
    CycleCounterTicks startTicks;
};

#endif // HAVE_TICK_COUNTER

QT_END_NAMESPACE

#endif // QBENCHMARKTIMEMEASURERS_P_H