diff options
Diffstat (limited to 'tests/auto/other/qobjectperformance')
3 files changed, 134 insertions, 0 deletions
diff --git a/tests/auto/other/qobjectperformance/.gitignore b/tests/auto/other/qobjectperformance/.gitignore new file mode 100644 index 0000000000..028ca89aad --- /dev/null +++ b/tests/auto/other/qobjectperformance/.gitignore @@ -0,0 +1 @@ +tst_qobjectperformance diff --git a/tests/auto/other/qobjectperformance/qobjectperformance.pro b/tests/auto/other/qobjectperformance/qobjectperformance.pro new file mode 100644 index 0000000000..189f8eeb2a --- /dev/null +++ b/tests/auto/other/qobjectperformance/qobjectperformance.pro @@ -0,0 +1,7 @@ +CONFIG += testcase +TARGET = tst_qobjectperformance +SOURCES += tst_qobjectperformance.cpp + +QT = core network testlib + + diff --git a/tests/auto/other/qobjectperformance/tst_qobjectperformance.cpp b/tests/auto/other/qobjectperformance/tst_qobjectperformance.cpp new file mode 100644 index 0000000000..26145a0df4 --- /dev/null +++ b/tests/auto/other/qobjectperformance/tst_qobjectperformance.cpp @@ -0,0 +1,126 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include <QtTest/QtTest> + +#include <qcoreapplication.h> + +#include <qobject.h> + +//TESTED_CLASS= +//TESTED_FILES=corelib/kernel/qobject.h corelib/kernel/qobject.cpp + +class tst_QObjectPerformance : public QObject +{ + Q_OBJECT + +public: + +private slots: + void emitToManyReceivers(); +}; + +class SimpleSenderObject : public QObject +{ + Q_OBJECT + +signals: + void signal(); + +public: + void emitSignal() + { + emit signal(); + } +}; + +class SimpleReceiverObject : public QObject +{ + Q_OBJECT + +public slots: + void slot() + { + } +}; + +void tst_QObjectPerformance::emitToManyReceivers() +{ + // ensure that emission times remain mostly linear as the number of receivers increase + + SimpleSenderObject sender; + int elapsed = 0; + const int increase = 3000; + const int base = 5000; + + for (int i = 0; i < 4; ++i) { + const int size = base + i * increase; + const double increaseRatio = double(size) / (double)(size - increase); + + QList<SimpleReceiverObject *> receivers; + for (int k = 0; k < size; ++k) { + SimpleReceiverObject *receiver = new SimpleReceiverObject; + QObject::connect(&sender, SIGNAL(signal()), receiver, SLOT(slot())); + receivers.append(receiver); + } + + QTime timer; + timer.start(); + sender.emitSignal(); + int e = timer.elapsed(); + + if (elapsed > 1) { + qDebug() << size << "receivers, elapsed time" << e << "compared to previous time" << elapsed; + QVERIFY(double(e) / double(elapsed) <= increaseRatio * 2.0); + } else { + qDebug() << size << "receivers, elapsed time" << e << "cannot be compared to previous, unmeasurable time"; + } + elapsed = e; + + qDeleteAll(receivers); + receivers.clear(); + } +} + + +QTEST_MAIN(tst_QObjectPerformance) +#include "tst_qobjectperformance.moc" |