1 files changed, 174 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/kernel/events/tst_bench_events.cpp b/tests/benchmarks/corelib/kernel/events/tst_bench_events.cpp
new file mode 100644
index 0000000000..cfe5b1bcd1
--- /dev/null
+++ b/tests/benchmarks/corelib/kernel/events/tst_bench_events.cpp
@@ -0,0 +1,174 @@
+/****************************************************************************
+**
+** 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 <qtest.h>
+#include <qtesteventloop.h>
+
+class PingPong : public QObject
+{
+public:
+    void setPeer(QObject *peer);
+    void resetCounter() {m_counter = 100;}
+
+protected:
+    bool event(QEvent *e) override;
+
+private:
+    QObject *m_peer;
+    int m_counter;
+};
+
+void PingPong::setPeer(QObject *peer)
+{
+    m_peer = peer;
+    m_counter = 100;
+}
+
+bool PingPong::event(QEvent *)
+{
+    --m_counter;
+    if (m_counter > 0) {
+        QEvent *e = new QEvent(QEvent::User);
+        QCoreApplication::postEvent(m_peer, e);
+    } else {
+        QTestEventLoop::instance().exitLoop();
+    }
+    return true;
+}
+
+class EventTester : public QObject
+{
+public:
+    int foo(int bar);
+
+protected:
+    bool event(QEvent *e) override;
+};
+
+bool EventTester::event(QEvent *e)
+{
+    if (e->type() == QEvent::User+1)
+        return foo(e->type()) != 0;
+    return false;
+}
+
+int EventTester::foo(int bar)
+{
+    return bar + 1;
+}
+
+class EventsBench : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void initTestCase();
+    void cleanupTestCase();
+
+    void noEvent();
+    void sendEvent_data();
+    void sendEvent();
+    void postEvent_data();
+    void postEvent();
+};
+
+void EventsBench::initTestCase()
+{
+}
+
+void EventsBench::cleanupTestCase()
+{
+}
+
+void EventsBench::noEvent()
+{
+    EventTester tst;
+    int val = 0;
+    QBENCHMARK {
+        val += tst.foo(1);
+    }
+}
+
+void EventsBench::sendEvent_data()
+{
+    QTest::addColumn<bool>("filterEvents");
+    QTest::newRow("no eventfilter") << false;
+    QTest::newRow("eventfilter") << true;
+}
+
+void EventsBench::sendEvent()
+{
+    QFETCH(bool, filterEvents);
+    EventTester tst;
+    if (filterEvents)
+        tst.installEventFilter(this);
+    QEvent evt(QEvent::Type(QEvent::User+1));
+    QBENCHMARK {
+        QCoreApplication::sendEvent(&tst, &evt);
+    }
+}
+
+void EventsBench::postEvent_data()
+{
+    QTest::addColumn<bool>("filterEvents");
+    // The first time an eventloop is executed, the case runs radically slower at least
+    // on some platforms, so test the "no eventfilter" case to get a comparable results
+    // with the "eventfilter" case.
+    QTest::newRow("first time, no eventfilter") << false;
+    QTest::newRow("no eventfilter") << false;
+    QTest::newRow("eventfilter") << true;
+}
+
+void EventsBench::postEvent()
+{
+    QFETCH(bool, filterEvents);
+    PingPong ping;
+    PingPong pong;
+    ping.setPeer(&pong);
+    pong.setPeer(&ping);
+    if (filterEvents) {
+        ping.installEventFilter(this);
+        pong.installEventFilter(this);
+    }
+
+    QBENCHMARK {
+        // In case multiple iterations are done, event needs to be created inside the QBENCHMARK,
+        // or it gets deleted once first iteration exits and can cause a crash. Similarly,
+        // ping and pong need their counters reset.
+        QEvent *e = new QEvent(QEvent::User);
+        ping.resetCounter();
+        pong.resetCounter();
+        QCoreApplication::postEvent(&ping, e);
+        QTestEventLoop::instance().enterLoop( 61 );
+    }
+}
+
+QTEST_MAIN(EventsBench)
+
+#include "tst_bench_events.moc"