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qt 6.5.1 original
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13
tests/benchmarks/corelib/kernel/events/CMakeLists.txt
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13
tests/benchmarks/corelib/kernel/events/CMakeLists.txt
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# Copyright (C) 2022 The Qt Company Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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#####################################################################
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## tst_bench_events Binary:
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#####################################################################
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qt_internal_add_benchmark(tst_bench_events
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SOURCES
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tst_bench_events.cpp
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LIBRARIES
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Qt::Test
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)
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150
tests/benchmarks/corelib/kernel/events/tst_bench_events.cpp
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tests/benchmarks/corelib/kernel/events/tst_bench_events.cpp
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QtCore>
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#include <qtest.h>
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#include <qtesteventloop.h>
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class PingPong : public QObject
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{
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public:
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void setPeer(QObject *peer);
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void resetCounter() {m_counter = 100;}
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protected:
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bool event(QEvent *e) override;
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private:
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QObject *m_peer;
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int m_counter;
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};
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void PingPong::setPeer(QObject *peer)
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{
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m_peer = peer;
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m_counter = 100;
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}
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bool PingPong::event(QEvent *)
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{
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--m_counter;
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if (m_counter > 0) {
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QEvent *e = new QEvent(QEvent::User);
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QCoreApplication::postEvent(m_peer, e);
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} else {
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QTestEventLoop::instance().exitLoop();
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}
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return true;
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}
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class EventTester : public QObject
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{
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public:
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int foo(int bar);
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protected:
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bool event(QEvent *e) override;
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};
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bool EventTester::event(QEvent *e)
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{
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if (e->type() == QEvent::User+1)
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return foo(e->type()) != 0;
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return false;
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}
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int EventTester::foo(int bar)
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{
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return bar + 1;
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}
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class EventsBench : public QObject
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{
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Q_OBJECT
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private slots:
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void initTestCase();
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void cleanupTestCase();
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void noEvent();
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void sendEvent_data();
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void sendEvent();
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void postEvent_data();
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void postEvent();
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};
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void EventsBench::initTestCase()
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{
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}
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void EventsBench::cleanupTestCase()
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{
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}
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void EventsBench::noEvent()
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{
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EventTester tst;
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int val = 0;
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QBENCHMARK {
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val += tst.foo(1);
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}
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QVERIFY(val > 0);
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}
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void EventsBench::sendEvent_data()
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{
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QTest::addColumn<bool>("filterEvents");
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QTest::newRow("no eventfilter") << false;
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QTest::newRow("eventfilter") << true;
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}
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void EventsBench::sendEvent()
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{
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QFETCH(bool, filterEvents);
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EventTester tst;
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if (filterEvents)
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tst.installEventFilter(this);
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QEvent evt(QEvent::Type(QEvent::User+1));
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QBENCHMARK {
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QCoreApplication::sendEvent(&tst, &evt);
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}
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}
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void EventsBench::postEvent_data()
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{
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QTest::addColumn<bool>("filterEvents");
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// The first time an eventloop is executed, the case runs radically slower at least
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// on some platforms, so test the "no eventfilter" case to get a comparable results
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// with the "eventfilter" case.
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QTest::newRow("first time, no eventfilter") << false;
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QTest::newRow("no eventfilter") << false;
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QTest::newRow("eventfilter") << true;
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}
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void EventsBench::postEvent()
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{
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QFETCH(bool, filterEvents);
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PingPong ping;
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PingPong pong;
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ping.setPeer(&pong);
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pong.setPeer(&ping);
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if (filterEvents) {
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ping.installEventFilter(this);
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pong.installEventFilter(this);
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}
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QBENCHMARK {
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// In case multiple iterations are done, event needs to be created inside the QBENCHMARK,
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// or it gets deleted once first iteration exits and can cause a crash. Similarly,
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// ping and pong need their counters reset.
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QEvent *e = new QEvent(QEvent::User);
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ping.resetCounter();
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pong.resetCounter();
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QCoreApplication::postEvent(&ping, e);
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QTestEventLoop::instance().enterLoop( 61 );
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}
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}
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QTEST_MAIN(EventsBench)
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#include "tst_bench_events.moc"
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