qt-everywhere-src-5.15.1/qtbase/tests/benchmarks/gui/kernel/qguimetatype/tst_qguimetatype.cpp

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** This file is part of the test suite of the Qt Toolkit.
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#include <qtest.h>
#include <QtCore/qmetatype.h>

class tst_QGuiMetaType : public QObject
{
    Q_OBJECT

private slots:
    void constructInPlace_data();
    void constructInPlace();
    void constructInPlaceCopy_data();
    void constructInPlaceCopy();
private:
    void constructableGuiTypes();
};


void tst_QGuiMetaType::constructableGuiTypes()
{
    QTest::addColumn<int>("typeId");
    for (int i = QMetaType::FirstGuiType; i <= QMetaType::LastGuiType; ++i)
        QTest::newRow(QMetaType::typeName(i)) << i;
}


void tst_QGuiMetaType::constructInPlace_data()
{
    constructableGuiTypes();
}

void tst_QGuiMetaType::constructInPlace()
{
    QFETCH(int, typeId);
    int size = QMetaType::sizeOf(typeId);
    void *storage = qMallocAligned(size, 2 * sizeof(qlonglong));
    QCOMPARE(QMetaType::construct(typeId, storage, /*copy=*/0), storage);
    QMetaType::destruct(typeId, storage);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            QMetaType::construct(typeId, storage, /*copy=*/0);
            QMetaType::destruct(typeId, storage);
        }
    }
    qFreeAligned(storage);
}

void tst_QGuiMetaType::constructInPlaceCopy_data()
{
    constructableGuiTypes();
}

void tst_QGuiMetaType::constructInPlaceCopy()
{
    QFETCH(int, typeId);
    int size = QMetaType::sizeOf(typeId);
    void *storage = qMallocAligned(size, 2 * sizeof(qlonglong));
    void *other = QMetaType::create(typeId);
    QCOMPARE(QMetaType::construct(typeId, storage, other), storage);
    QMetaType::destruct(typeId, storage);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            QMetaType::construct(typeId, storage, other);
            QMetaType::destruct(typeId, storage);
        }
    }
    QMetaType::destroy(typeId, other);
    qFreeAligned(storage);
}

QTEST_MAIN(tst_QGuiMetaType)
#include "tst_qguimetatype.moc"