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50
51#include "qtquickcontrolsapplication.h"
52#include <QtQml/QQmlApplicationEngine>
53#include <QQuickWindow>
54#include <QtCore/QElapsedTimer>
55#include <functional>
56#include <stdio.h>
57
58int runBenchmark(std::function<qint64()> f) {
59 {
60 auto r = f();
61 if (r >= 0)
62 printf(format: "%d,", static_cast<int>(r));
63 else
64 return -1;
65 }
66
67 {
68 auto r = f();
69 if (r >= 0)
70 printf(format: "%d\n", static_cast<int>(r));
71 else
72 return -1;
73 }
74
75 return 0;
76}
77
78
79int main(int argc, char *argv[])
80{
81 QtQuickControlsApplication app(argc, argv);
82
83 auto startup = [&app]() -> qint64 {
84 QElapsedTimer timer;
85 timer.start();
86 QQmlApplicationEngine engine(QUrl("qrc:/main.qml"));
87 if (engine.rootObjects().size() != 1)
88 return -1;
89 QQuickWindow *window = qobject_cast<QQuickWindow*>(object: engine.rootObjects().first());
90 QObject::connect(sender: window, signal: &QQuickWindow::frameSwapped,
91 context: QCoreApplication::instance(), slot: &QCoreApplication::quit);
92 if (app.exec() != 0)
93 return -1;
94 return timer.elapsed();
95 };
96
97 return runBenchmark(f: startup);
98}
99

source code of qtquickcontrols/tests/benchmarks/startup/startup_bench.cpp