qt-everywhere-src-5.15.1/qtquickcontrols2/tests/benchmarks/objectcount/tst_objectcount.cpp

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#include <QtTest>
#include <QtQuick>
#include <QtCore/private/qhooks_p.h>
#include <iostream>
#include "../../auto/shared/visualtestutil.h"

using namespace QQuickVisualTestUtil;

static int qt_verbose = qgetenv("VERBOSE").toInt() != 0;

Q_GLOBAL_STATIC(QObjectList, qt_qobjects)

extern "C" Q_DECL_EXPORT void qt_addQObject(QObject *object)
{
    qt_qobjects->append(object);
}

extern "C" Q_DECL_EXPORT void qt_removeQObject(QObject *object)
{
    qt_qobjects->removeAll(object);
}

class tst_ObjectCount : public QObject
{
    Q_OBJECT

private slots:
    void init();
    void cleanup();

    void qobjects();
    void qobjects_data();

    void qquickitems();
    void qquickitems_data();

private:
    QQmlEngine engine;
};

void tst_ObjectCount::init()
{
    qtHookData[QHooks::AddQObject] = reinterpret_cast<quintptr>(&qt_addQObject);
    qtHookData[QHooks::RemoveQObject] = reinterpret_cast<quintptr>(&qt_removeQObject);

    // warmup
    QQmlComponent component(&engine);
    component.setData("import QtQuick 2.0; import QtQuick.Controls 2.1; Item { Button {} }", QUrl());
    delete component.create();
}

void tst_ObjectCount::cleanup()
{
    qtHookData[QHooks::AddQObject] = 0;
    qtHookData[QHooks::RemoveQObject] = 0;
}

static void initTestRows(QQmlEngine *engine)
{
    addTestRowForEachControl(engine, "controls", "QtQuick/Controls.2");
    addTestRowForEachControl(engine, "controls/fusion", "QtQuick/Controls.2/Fusion", QStringList() << "ButtonPanel" << "CheckIndicator" << "RadioIndicator" << "SliderGroove" << "SliderHandle" << "SwitchIndicator");
    addTestRowForEachControl(engine, "controls/imagine", "QtQuick/Controls.2/Imagine");
    addTestRowForEachControl(engine, "controls/material", "QtQuick/Controls.2/Material", QStringList() << "Ripple" << "SliderHandle" << "CheckIndicator" << "RadioIndicator" << "SwitchIndicator" << "BoxShadow" << "ElevationEffect" << "CursorDelegate");
    addTestRowForEachControl(engine, "controls/universal", "QtQuick/Controls.2/Universal", QStringList() << "CheckIndicator" << "RadioIndicator" << "SwitchIndicator");
}

template <typename T>
static void doBenchmark(QQmlEngine *engine, const QUrl &url)
{
    QQmlComponent component(engine);

    qt_qobjects->clear();

    component.loadUrl(url);
    QScopedPointer<QObject> object(component.create());
    QVERIFY2(object.data(), qPrintable(component.errorString()));

    QObjectList objects;
    for (QObject *object : qAsConst(*qt_qobjects())) {
        if (qobject_cast<T *>(object))
            objects += object;
    }

    if (qt_verbose) {
        for (QObject *object : objects)
            qInfo() << "\t" << object;
    }

    QTest::setBenchmarkResult(objects.count(), QTest::Events);
}

void tst_ObjectCount::qobjects()
{
    QFETCH(QUrl, url);
    doBenchmark<QObject>(&engine, url);
}

void tst_ObjectCount::qobjects_data()
{
    QTest::addColumn<QUrl>("url");
    initTestRows(&engine);
}

void tst_ObjectCount::qquickitems()
{
    QFETCH(QUrl, url);
    doBenchmark<QQuickItem>(&engine, url);
}

void tst_ObjectCount::qquickitems_data()
{
    QTest::addColumn<QUrl>("url");
    initTestRows(&engine);
}

QTEST_MAIN(tst_ObjectCount)

#include "tst_objectcount.moc"