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Diffstat (limited to 'tests/benchmarks/corelib/kernel/qobject/tst_bench_qobject.cpp')
| -rw-r--r-- | tests/benchmarks/corelib/kernel/qobject/tst_bench_qobject.cpp | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/kernel/qobject/tst_bench_qobject.cpp b/tests/benchmarks/corelib/kernel/qobject/tst_bench_qobject.cpp new file mode 100644 index 0000000000..0f57f2997a --- /dev/null +++ b/tests/benchmarks/corelib/kernel/qobject/tst_bench_qobject.cpp @@ -0,0 +1,310 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <QtCore> +#include <QtWidgets/QTreeView> +#include <qtest.h> +#include "object.h" +#include <qcoreapplication.h> +#include <qdatetime.h> + +enum { + CreationDeletionBenckmarkConstant = 34567, + SignalsAndSlotsBenchmarkConstant = 456789 +}; + +class tst_QObject : public QObject +{ +Q_OBJECT +private slots: + void signal_slot_benchmark(); + void signal_slot_benchmark_data(); + void signal_many_receivers(); + void signal_many_receivers_data(); + void qproperty_benchmark_data(); + void qproperty_benchmark(); + void dynamic_property_benchmark(); + void connect_disconnect_benchmark_data(); + void connect_disconnect_benchmark(); + void receiver_destroyed_benchmark(); + + void stdAllocator(); +}; + +class QObjectUsingStandardAllocator : public QObject +{ + Q_OBJECT +public: + QObjectUsingStandardAllocator() + { + } +}; + +template<class T> +inline void allocator() +{ + // We need to allocate certain amount of objects otherwise the new implementation + // may re-use the previous allocation, hiding the somehow high cost of allocation. It + // also helps us to reduce the noise ratio, which is high for memory allocation. + // + // The check depends on memory allocation performance, which is quite non-deterministic. + // When a new memory is requested, the new operator, depending on implementation, is trying + // to re-use existing, already allocated for the process memory. If there is not enough, it + // asks OS to give more. Of course the first case is faster then the second. In the same + // time, from an application perspective the first is also more likely. + // + // As a result, depending on which use-case one wants to test, it may be recommended to run this + // test in separation from others, to "force" expensive code path in the memory allocation. + // + // The time based results are heavily affected by background noise. One really needs to + // prepare OS (no other tasks, CPU and RAM reservations) to run this test, or use + // instruction counting which seems to be less fragile. + + const int count = 256 * 1024; + + QScopedPointer<T> objects[count]; + QBENCHMARK_ONCE { + for (int i = 0; i < count; ++i) + objects[i].reset(new T); + for (int i = 0; i < count; ++i) + objects[i].reset(); + } +} + +void tst_QObject::stdAllocator() +{ + allocator<QObjectUsingStandardAllocator>(); +} + +struct Functor { + void operator()(){} +}; + +void tst_QObject::signal_slot_benchmark_data() +{ + QTest::addColumn<int>("type"); + QTest::newRow("simple function") << 0; + QTest::newRow("single signal/slot") << 1; + QTest::newRow("multi signal/slot") << 2; + QTest::newRow("unconnected signal") << 3; + QTest::newRow("single signal/ptr") << 4; + QTest::newRow("functor") << 5; +} + +void tst_QObject::signal_slot_benchmark() +{ + QFETCH(int, type); + + Object singleObject; + Object multiObject; + Functor functor; + singleObject.setObjectName("single"); + multiObject.setObjectName("multi"); + + if (type == 5) { + QObject::connect(&singleObject, &Object::signal0, functor); + } else if (type == 4) { + QObject::connect(&singleObject, &Object::signal0, &singleObject, &Object::slot0); + } else { + singleObject.connect(&singleObject, SIGNAL(signal0()), SLOT(slot0())); + } + + multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(slot0())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal1())); + multiObject.connect(&multiObject, SIGNAL(signal1()), SLOT(slot1())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal2())); + multiObject.connect(&multiObject, SIGNAL(signal2()), SLOT(slot2())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal3())); + multiObject.connect(&multiObject, SIGNAL(signal3()), SLOT(slot3())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal4())); + multiObject.connect(&multiObject, SIGNAL(signal4()), SLOT(slot4())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal5())); + multiObject.connect(&multiObject, SIGNAL(signal5()), SLOT(slot5())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal6())); + multiObject.connect(&multiObject, SIGNAL(signal6()), SLOT(slot6())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal7())); + multiObject.connect(&multiObject, SIGNAL(signal7()), SLOT(slot7())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal8())); + multiObject.connect(&multiObject, SIGNAL(signal8()), SLOT(slot8())); + // multiObject.connect(&multiObject, SIGNAL(signal0()), SLOT(signal9())); + multiObject.connect(&multiObject, SIGNAL(signal9()), SLOT(slot9())); + + if (type == 0) { + QBENCHMARK { + singleObject.slot0(); + } + } else if (type == 1) { + QBENCHMARK { + singleObject.emitSignal0(); + } + } else if (type == 2) { + QBENCHMARK { + multiObject.emitSignal0(); + } + } else if (type == 3) { + QBENCHMARK { + singleObject.emitSignal1(); + } + } else if (type == 4 || type == 5) { + QBENCHMARK { + singleObject.emitSignal0(); + } + } +} + +void tst_QObject::signal_many_receivers_data() +{ + QTest::addColumn<int>("receiverCount"); + QTest::newRow("100 receivers") << 100; + QTest::newRow("1 000 receivers") << 1000; + QTest::newRow("10 000 receivers") << 10000; +} + +void tst_QObject::signal_many_receivers() +{ + QFETCH(int, receiverCount); + Object sender; + std::vector<Object> receivers(receiverCount); + + for (Object &receiver : receivers) + QObject::connect(&sender, &Object::signal0, &receiver, &Object::slot0); + + QBENCHMARK { + sender.emitSignal0(); + } +} + +void tst_QObject::qproperty_benchmark_data() +{ + QTest::addColumn<QByteArray>("name"); + const QMetaObject *mo = &QTreeView::staticMetaObject; + for (int i = 0; i < mo->propertyCount(); ++i) { + QMetaProperty prop = mo->property(i); + if (prop.isWritable()) + QTest::newRow(prop.name()) << QByteArray(prop.name()); + } +} + +void tst_QObject::qproperty_benchmark() +{ + QFETCH(QByteArray, name); + const char *p = name.constData(); + QTreeView obj; + QVariant v = obj.property(p); + QBENCHMARK { + obj.setProperty(p, v); + (void)obj.property(p); + } +} + +void tst_QObject::dynamic_property_benchmark() +{ + QTreeView obj; + QBENCHMARK { + obj.setProperty("myProperty", 123); + (void)obj.property("myProperty"); + obj.setProperty("myOtherProperty", 123); + (void)obj.property("myOtherProperty"); + } +} + +void tst_QObject::connect_disconnect_benchmark_data() +{ + QTest::addColumn<int>("type"); + QTest::newRow("normalized signature") << 0; + QTest::newRow("unormalized signature") << 1; + QTest::newRow("function pointer") << 2; + QTest::newRow("normalized signature/handle") << 3; + QTest::newRow("unormalized signature/handle") << 4; + QTest::newRow("function pointer/handle") << 5; + QTest::newRow("functor/handle") << 6;} + +void tst_QObject::connect_disconnect_benchmark() +{ + QFETCH(int, type); + switch (type) { + case 0: { + QTreeView obj; + QBENCHMARK { + QObject::connect (&obj, SIGNAL(viewportEntered()), &obj, SLOT(expandAll())); + QObject::disconnect(&obj, SIGNAL(viewportEntered()), &obj, SLOT(expandAll())); + } + } break; + case 1: { + QTreeView obj; + QBENCHMARK { + QObject::connect (&obj, SIGNAL(viewportEntered( )), &obj, SLOT(expandAll( ))); // sic: non-normalised + QObject::disconnect(&obj, SIGNAL(viewportEntered( )), &obj, SLOT(expandAll( ))); // sic: non-normalised + } + } break; + case 2: { + QTreeView obj; + QBENCHMARK { + QObject::connect (&obj, &QAbstractItemView::viewportEntered, &obj, &QTreeView::expandAll); + QObject::disconnect(&obj, &QAbstractItemView::viewportEntered, &obj, &QTreeView::expandAll); + } + } break; + case 3: { + QTreeView obj; + QBENCHMARK { + QObject::disconnect(QObject::connect(&obj, SIGNAL(viewportEntered()), &obj, SLOT(expandAll()))); + } + } break; + case 4: { + QTreeView obj; + QBENCHMARK { + QObject::disconnect(QObject::connect(&obj, SIGNAL(viewportEntered( )), &obj, SLOT(expandAll( )))); // sic: non-normalised + } + } break; + case 5: { + QTreeView obj; + QBENCHMARK { + QObject::disconnect(QObject::connect(&obj, &QAbstractItemView::viewportEntered, &obj, &QTreeView::expandAll)); + } + } break; + case 6: { + QTreeView obj; + Functor functor; + QBENCHMARK { + QObject::disconnect(QObject::connect(&obj, &QAbstractItemView::viewportEntered, functor)); + } + } break; + } +} + +void tst_QObject::receiver_destroyed_benchmark() +{ + Object sender; + QBENCHMARK { + Object receiver; + QObject::connect(&sender, &Object::signal0, &receiver, &Object::slot0); + } +} + +QTEST_MAIN(tst_QObject) + +#include "tst_bench_qobject.moc" |