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-rw-r--r--tests/benchmarks/declarative/qmltime/qmltime.cpp283
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diff --git a/tests/benchmarks/declarative/qmltime/qmltime.cpp b/tests/benchmarks/declarative/qmltime/qmltime.cpp
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--- a/tests/benchmarks/declarative/qmltime/qmltime.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** 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 <QDeclarativeEngine>
-#include <QDeclarativeComponent>
-#include <QDebug>
-#include <QApplication>
-#include <QTime>
-#include <QDeclarativeContext>
-#include <QGraphicsScene>
-#include <QGraphicsRectItem>
-
-class Timer : public QObject
-{
- Q_OBJECT
- Q_PROPERTY(QDeclarativeComponent *component READ component WRITE setComponent)
-
-public:
- Timer();
-
- QDeclarativeComponent *component() const;
- void setComponent(QDeclarativeComponent *);
-
- static Timer *timerInstance();
-
- void run(uint);
-
- bool willParent() const;
- void setWillParent(bool p);
-
-private:
- void runTest(QDeclarativeContext *, uint);
-
- QDeclarativeComponent *m_component;
- static Timer *m_timer;
-
- bool m_willparent;
- QGraphicsScene m_scene;
- QGraphicsRectItem m_item;
-};
-QML_DECLARE_TYPE(Timer);
-
-Timer *Timer::m_timer = 0;
-
-Timer::Timer()
-: m_component(0), m_willparent(false)
-{
- if (m_timer)
- qWarning("Timer: Timer already registered");
- m_timer = this;
-
- m_scene.setItemIndexMethod(QGraphicsScene::NoIndex);
- m_scene.addItem(&m_item);
-}
-
-QDeclarativeComponent *Timer::component() const
-{
- return m_component;
-}
-
-void Timer::setComponent(QDeclarativeComponent *c)
-{
- m_component = c;
-}
-
-Timer *Timer::timerInstance()
-{
- return m_timer;
-}
-
-void Timer::run(uint iterations)
-{
- QDeclarativeContext context(qmlContext(this));
-
- QObject *o = m_component->create(&context);
- QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);
- if (m_willparent && go)
- go->setParentItem(&m_item);
- delete o;
-
- runTest(&context, iterations);
-}
-
-bool Timer::willParent() const
-{
- return m_willparent;
-}
-
-void Timer::setWillParent(bool p)
-{
- m_willparent = p;
-}
-
-void Timer::runTest(QDeclarativeContext *context, uint iterations)
-{
- QTime t;
- t.start();
- for (uint ii = 0; ii < iterations; ++ii) {
- QObject *o = m_component->create(context);
- QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);
- if (m_willparent && go)
- go->setParentItem(&m_item);
- delete o;
- }
-
- int e = t.elapsed();
-
- qWarning() << "Total:" << e << "ms, Per iteration:" << qreal(e) / qreal(iterations) << "ms";
-
-}
-
-void usage(const char *name)
-{
- qWarning("Usage: %s [-iterations <count>] [-parent] <qml file>\n", name);
-
- qWarning("qmltime is a tool for benchmarking the runtime cost of instantiating\n"
- "a QML component. It is typically run as follows:\n"
- "\n"
- "%s path/to/benchmark.qml\n"
- "\n"
- "If the -parent option is specified, the component being measured will also\n"
- "be parented to an item already in the scene.\n"
- "\n"
- "If the -iterations option is specified, the benchmark will run the specified\n"
- "number of iterations. If -iterations is not specified, 1024 iterations\n"
- "are performed.\n"
- "\n"
- "qmltime expects the file to be benchmarked to contain a certain structure.\n"
- "Specifically, it requires the presence of a QmlTime.Timer element. For example,\n"
- "say we wanted to benchmark the following list delegate:\n"
- "\n"
- "Rectangle {\n"
- " color: \"green\"\n"
- " width: 400; height: 100\n"
- " Text {\n"
- " anchors.centerIn: parent\n"
- " text: name\n"
- " }\n"
- "}\n"
- "\n"
- "we would create a benchmark file that looks like this:\n"
- "\n"
- "import QtQuick 2.0\n"
- "import QmlTime 1.0 as QmlTime\n"
- "\n"
- "Item {\n"
- "\n"
- " property string name: \"Bob Smith\"\n"
- "\n"
- " QmlTime.Timer {\n"
- " component: Rectangle {\n"
- " color: \"green\"\n"
- " width: 400; height: 100\n"
- " Text {\n"
- " anchors.centerIn: parent\n"
- " text: name\n"
- " }\n"
- " }\n"
- " }\n"
- "}\n"
- "\n"
- "The outer Item functions as a dummy data provider for any additional\n"
- "data required by the bindings in the component being benchmarked (in the\n"
- "example above we provide a \"name\" property).\n"
- "\n"
- "When started, the component is instantiated once before running\n"
- "the benchmark, which means that the reported time does not include\n"
- "compile time (as the results of compilation are cached internally).\n"
- "In this sense the times reported by qmltime best correspond to the\n"
- "costs associated with delegate creation in the view classes, where the\n"
- "same delegate is instantiated over and over. Conversely, it is not a\n"
- "good approximation for e.g. Loader, which typically only instantiates\n"
- "an element once (and so for Loader the compile time is very relevant\n"
- "to the overall cost).", name);
-
- exit(-1);
-}
-
-int main(int argc, char ** argv)
-{
- QApplication app(argc, argv);
-
- qmlRegisterType<Timer>("QmlTime", 1, 0, "Timer");
-
- uint iterations = 1024;
- QString filename;
- bool willParent = false;
-
- for (int ii = 1; ii < argc; ++ii) {
- QByteArray arg(argv[ii]);
-
- if (arg == "-iterations") {
- if (ii + 1 < argc) {
- ++ii;
- QByteArray its(argv[ii]);
- bool ok = false;
- iterations = its.toUInt(&ok);
- if (!ok)
- usage(argv[0]);
- } else {
- usage(argv[0]);
- }
- } else if (arg == "-parent") {
- willParent = true;
- } else if (arg == "-help") {
- usage(argv[0]);
- } else {
- filename = QLatin1String(argv[ii]);
- }
- }
-
- if (filename.isEmpty())
- usage(argv[0]);
-
- QDeclarativeEngine engine;
- QDeclarativeComponent component(&engine, filename);
- if (component.isError()) {
- qWarning() << component.errors();
- return -1;
- }
-
- QObject *obj = component.create();
- if (!obj) {
- qWarning() << component.errors();
- return -1;
- }
-
- Timer *timer = Timer::timerInstance();
- if (!timer) {
- qWarning() << "A Tester.Timer instance is required.";
- return -1;
- }
-
- timer->setWillParent(willParent);
-
- if (!timer->component()) {
- qWarning() << "The timer has no component";
- return -1;
- }
-
- timer->run(iterations);
-
- return 0;
-}
-
-#include "qmltime.moc"
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