/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the test suite of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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#include <QtCore>+
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+
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#include <qtest.h>+
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#include <qtesteventloop.h>+
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+
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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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+
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protected:+
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    bool event(QEvent *e);+
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+
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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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+
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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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+
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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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+
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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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+
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protected:+
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    bool event(QEvent *e);+
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};+
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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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+
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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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+
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class EventsBench : public QObject+
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{+
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    Q_OBJECT+
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+
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private slots:+
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    void initTestCase();+
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    void cleanupTestCase();+
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+
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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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+
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void EventsBench::initTestCase()+
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{+
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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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+
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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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}+
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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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+
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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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+
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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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+
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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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+
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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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+
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QTEST_MAIN(EventsBench)+
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+
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#include "main.moc"+
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