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#include "QtTest/private/qbenchmarkevent_p.h"
#include "QtTest/private/qbenchmark_p.h"
#include "QtTest/private/qbenchmarkmetric_p.h"
#include <qdebug.h>

QT_BEGIN_NAMESPACE

QAbstractEventDispatcher::EventFilter oldEventFilter = 0;
qint64 QBenchmarkEvent::eventCounter = 0;

QBenchmarkEvent::~QBenchmarkEvent()
{
}

void QBenchmarkEvent::start()
{
    QBenchmarkEvent::eventCounter = 0;
    QAbstractEventDispatcher *parent = QAbstractEventDispatcher::instance();
    oldEventFilter = parent->setEventFilter(QBenchmarkEvent::eventCountingMechanism);
}

qint64 QBenchmarkEvent::checkpoint()
{
    return QBenchmarkEvent::eventCounter;
}

qint64 QBenchmarkEvent::stop()
{
    QAbstractEventDispatcher *parent = QAbstractEventDispatcher::instance();
    parent->setEventFilter(oldEventFilter);
    return QBenchmarkEvent::eventCounter;
}

// It's very tempting to simply reject a measurement if 0 events
// where counted, however that is a possible situation and returning
// false here will create a infinite loop. Do not change this.
bool QBenchmarkEvent::isMeasurementAccepted(qint64 measurement)
{
    Q_UNUSED(measurement);
    return true;
}

int QBenchmarkEvent::adjustIterationCount(int suggestion)
{
    return suggestion;
}

int QBenchmarkEvent::adjustMedianCount(int suggestion)
{
    Q_UNUSED(suggestion);
    return 1;
}

QTest::QBenchmarkMetric QBenchmarkEvent::metricType()
{
    return QTest::Events;
}

// This could be done in a much better way, this is just the beginning.
bool QBenchmarkEvent::eventCountingMechanism(void *message)
{
    Q_UNUSED(message);
    QBenchmarkEvent::eventCounter++;
    return false;
}

QT_END_NAMESPACE