8b56b8ed32
It is an extension coming from the use case when you, for instance, need to
implement a countdown timer in client codes, and manually maintain a dedicated
variable for counting down with the help of yet another Timer. There might be
other use cases as well. The returned value is meant to be in milliseconds, as
the method documentation says, since it is reasonable, and consistent with the
rest (ie. the interval accessor).
The elapsed time is already being tracked inside the event dispatcher, thus the
effort is only exposing that for all platforms supported according to the
desired timer identifier, and propagating up to the QTimer public API. It is
done by using the QTimerInfoList class in the glib and unix dispatchers, and the
WinTimeInfo struct for the windows dispatcher.
It might be a good idea to to establish a QWinTimerInfo
(qtimerinfo_win{_p.h,cpp}) in the future for resembling the interface for
windows with the glib/unix management so that it would be consistent. That would
mean abstracting out a base class (~interface) for the timer info classes.
Something like that QAbstractTimerInfo.
Test: Build test only on (Arch)Linux, Windows and Mac. I have also run the unit
tests and they passed as well.
Change-Id: Ie37b3aff909313ebc92e511e27d029abb070f110
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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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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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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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/QCoreApplication>
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#include <QtTest/QtTest>
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/* Custom event dispatcher to ensure we don't receive any spontaneous events */
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class TestEventDispatcher : public QAbstractEventDispatcher
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{
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Q_OBJECT
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public:
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TestEventDispatcher(QObject* parent =0)
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: QAbstractEventDispatcher(parent)
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{}
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void flush() {}
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bool hasPendingEvents() { return false; }
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void interrupt() {}
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bool processEvents(QEventLoop::ProcessEventsFlags) { return false; }
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void registerSocketNotifier(QSocketNotifier*) {}
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void registerTimer(int,int,Qt::TimerType,QObject*) {}
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QList<TimerInfo> registeredTimers(QObject*) const { return QList<TimerInfo>(); }
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void unregisterSocketNotifier(QSocketNotifier*) {}
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bool unregisterTimer(int) { return false; }
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bool unregisterTimers(QObject*) { return false; }
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int remainingTime(int) { return 0; }
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void wakeUp() {}
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};
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class tst_BenchlibEventCounter: public QObject
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{
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Q_OBJECT
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private slots:
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void events();
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void events_data();
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};
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void tst_BenchlibEventCounter::events()
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{
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QFETCH(int, eventCount);
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QAbstractEventDispatcher* ed = QAbstractEventDispatcher::instance();
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QBENCHMARK {
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for (int i = 0; i < eventCount; ++i) {
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ed->filterEvent(0);
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}
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}
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}
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void tst_BenchlibEventCounter::events_data()
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{
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QTest::addColumn<int>("eventCount");
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QTest::newRow("0") << 0;
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QTest::newRow("1") << 1;
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QTest::newRow("10") << 10;
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QTest::newRow("100") << 100;
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QTest::newRow("500") << 500;
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QTest::newRow("5000") << 5000;
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QTest::newRow("100000") << 100000;
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}
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int main(int argc, char** argv)
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{
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TestEventDispatcher dispatcher;
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QCoreApplication app(argc, argv);
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tst_BenchlibEventCounter test;
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return QTest::qExec(&test, argc, argv);
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}
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#include "tst_benchlibeventcounter.moc"
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