Import qproperty benchmarks from private repo

Change-Id: Icff5685b921f8a99acfeda1d79bb03ee652aa107
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

4 files changed, 323 insertions, 0 deletions

diff --git a/tests/benchmarks/corelib/kernel/CMakeLists.txt b/tests/benchmarks/corelib/kernel/CMakeLists.txt
index 4bfdc63823..34d457bb21 100644
--- a/tests/benchmarks/corelib/kernel/CMakeLists.txt
+++ b/tests/benchmarks/corelib/kernel/CMakeLists.txt
@@ -5,6 +5,7 @@ add_subdirectory(qmetatype)
 add_subdirectory(qvariant)
 add_subdirectory(qcoreapplication)
 add_subdirectory(qtimer_vs_qmetaobject)
+add_subdirectory(qproperty)
 if(TARGET Qt::Widgets)
     add_subdirectory(qmetaobject)
     add_subdirectory(qobject)
diff --git a/tests/benchmarks/corelib/kernel/qproperty/CMakeLists.txt b/tests/benchmarks/corelib/kernel/qproperty/CMakeLists.txt
new file mode 100644
index 0000000000..d6fc1c5a14
--- /dev/null
+++ b/tests/benchmarks/corelib/kernel/qproperty/CMakeLists.txt
@@ -0,0 +1,8 @@
+qt_internal_add_benchmark(tst_bench_qproperty
+    SOURCES
+       main.cpp
+       propertytester.h
+    PUBLIC_LIBRARIES
+        Qt::Core
+        Qt::Test
+)
diff --git a/tests/benchmarks/corelib/kernel/qproperty/main.cpp b/tests/benchmarks/corelib/kernel/qproperty/main.cpp
new file mode 100644
index 0000000000..5d6db35d2b
--- /dev/null
+++ b/tests/benchmarks/corelib/kernel/qproperty/main.cpp
@@ -0,0 +1,231 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QScopedPointer>
+#include <QProperty>
+
+#include <qtest.h>
+
+#include "propertytester.h"
+
+class PropertyBenchmark : public QObject
+{
+    Q_OBJECT
+private slots:
+    void cppOldBinding();
+    void cppOldBindingReadOnce();
+    void cppOldBindingDirect();
+    void cppOldBindingDirectReadOnce();
+
+    void cppNewBinding();
+    void cppNewBindingReadOnce();
+    void cppNewBindingDirect();
+    void cppNewBindingDirectReadOnce();
+
+    void cppNotifying();
+    void cppNotifyingReadOnce();
+    void cppNotifyingDirect();
+    void cppNotifyingDirectReadOnce();
+};
+
+void PropertyBenchmark::cppOldBinding()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    auto connection = connect(tester.data(), &PropertyTester::xOldChanged,
+                              tester.data(), [&]() { tester->setYOld(tester->xOld()); });
+
+    QCOMPARE(tester->property("yOld").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("xOld", ++i);
+        if (tester->property("yOld").toInt() != i)
+            QFAIL("boo");
+    }
+
+    QObject::disconnect(connection);
+}
+
+void PropertyBenchmark::cppOldBindingDirect()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    auto connection = connect(tester.data(), &PropertyTester::xOldChanged,
+                              tester.data(), [&]() { tester->setYOld(tester->xOld()); });
+
+    QCOMPARE(tester->yOld(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setXOld(++i);
+        if (tester->yOld() != i)
+            QFAIL("boo");
+    }
+
+    QObject::disconnect(connection);
+}
+
+void PropertyBenchmark::cppOldBindingReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    auto connection = connect(tester.data(), &PropertyTester::xOldChanged,
+                              tester.data(), [&]() { tester->setYOld(tester->xOld()); });
+
+    QCOMPARE(tester->property("yOld").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("xOld", ++i);
+    }
+
+    QCOMPARE(tester->property("yOld").toInt(), i);
+    QObject::disconnect(connection);
+}
+
+void PropertyBenchmark::cppOldBindingDirectReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    auto connection = connect(tester.data(), &PropertyTester::xOldChanged,
+                              tester.data(), [&]() { tester->setYOld(tester->xOld()); });
+
+    QCOMPARE(tester->yOld(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setXOld(++i);
+    }
+
+    QCOMPARE(tester->yOld(), i);
+    QObject::disconnect(connection);
+}
+
+void PropertyBenchmark::cppNewBinding()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->y.setBinding([&](){return tester->x.value();});
+
+    QCOMPARE(tester->property("y").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("x", ++i);
+        if (tester->property("y").toInt() != i)
+            QFAIL("boo");
+    }
+}
+
+void PropertyBenchmark::cppNewBindingDirect()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->y.setBinding([&](){return tester->x.value();});
+    QCOMPARE(tester->y.value(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->x = ++i;
+        if (tester->y.value() != i)
+            QFAIL("boo");
+    }
+}
+
+void PropertyBenchmark::cppNewBindingReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->y.setBinding([&](){return tester->x.value();});
+
+    QCOMPARE(tester->property("y").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("x", ++i);
+    }
+
+    QCOMPARE(tester->property("y").toInt(), i);
+}
+
+void PropertyBenchmark::cppNewBindingDirectReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->y.setBinding([&](){return tester->x.value();});
+    QCOMPARE(tester->y.value(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->x = ++i;
+    }
+
+    QCOMPARE(tester->y.value(), i);
+}
+
+void PropertyBenchmark::cppNotifying()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->yNotified.setBinding([&](){return tester->xNotified.value();});
+
+    QCOMPARE(tester->property("yNotified").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("xNotified", ++i);
+        if (tester->property("yNotified").toInt() != i)
+            QFAIL("boo");
+    }
+}
+
+void PropertyBenchmark::cppNotifyingDirect()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->yNotified.setBinding([&](){return tester->xNotified.value();});
+    QCOMPARE(tester->yNotified.value(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->xNotified.setValue(++i);
+        if (tester->yNotified.value() != i)
+            QFAIL("boo");
+    }
+}
+
+void PropertyBenchmark::cppNotifyingReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->yNotified.setBinding([&](){return tester->xNotified.value();});
+
+    QCOMPARE(tester->property("yNotified").toInt(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->setProperty("xNotified", ++i);
+    }
+
+    QCOMPARE(tester->property("yNotified").toInt(), i);
+}
+
+void PropertyBenchmark::cppNotifyingDirectReadOnce()
+{
+    QScopedPointer<PropertyTester> tester {new PropertyTester};
+    tester->yNotified.setBinding([&](){return tester->xNotified.value();});
+    QCOMPARE(tester->yNotified.value(), 0);
+    int i = 0;
+    QBENCHMARK {
+        tester->xNotified.setValue(++i);
+    }
+
+    QCOMPARE(tester->yNotified.value(), i);
+}
+
+QTEST_MAIN(PropertyBenchmark)
+#include "main.moc"
diff --git a/tests/benchmarks/corelib/kernel/qproperty/propertytester.h b/tests/benchmarks/corelib/kernel/qproperty/propertytester.h
new file mode 100644
index 0000000000..daf55f8396
--- /dev/null
+++ b/tests/benchmarks/corelib/kernel/qproperty/propertytester.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PROPERTYTESTER_H
+#define PROPERTYTESTER_H
+
+#include <QObject>
+#include <QProperty>
+
+class PropertyTester : public QObject
+{
+    Q_OBJECT
+signals:
+    void xOldChanged();
+    void yOldChanged();
+    void xNotifiedChanged();
+    void yNotifiedChanged();
+
+public:
+    PropertyTester() = default;
+    Q_PROPERTY(int xOld READ xOld WRITE setXOld NOTIFY xOldChanged)
+    Q_PROPERTY(int yOld READ yOld WRITE setYOld NOTIFY yOldChanged)
+    Q_PROPERTY(int x MEMBER x BINDABLE xBindable)
+    Q_PROPERTY(int y MEMBER y BINDABLE yBindable)
+    Q_PROPERTY(int xNotified MEMBER xNotified NOTIFY xNotifiedChanged BINDABLE xNotifiedBindable)
+    Q_PROPERTY(int yNotified MEMBER yNotified NOTIFY yNotifiedChanged BINDABLE yNotifiedBindable)
+    void setXOld(int i) {
+        if (m_xOld != i) {
+            m_xOld = i;
+            emit xOldChanged();
+        }
+    }
+    void setYOld(int i) {
+        if (m_yOld != i) {
+            m_yOld = i;
+            emit yOldChanged();
+        }
+    }
+    int xOld() { return m_xOld; }
+    int yOld() { return m_yOld; }
+    QProperty<int> x;
+    QProperty<int> y;
+
+    QBindable<int> xBindable() { return QBindable<int>(&x); }
+    QBindable<int> yBindable() { return QBindable<int>(&y); }
+
+    Q_OBJECT_BINDABLE_PROPERTY(PropertyTester, int, xNotified, &PropertyTester::xNotifiedChanged)
+    Q_OBJECT_BINDABLE_PROPERTY(PropertyTester, int, yNotified, &PropertyTester::yNotifiedChanged)
+
+    QBindable<int> xNotifiedBindable() { return QBindable<int>(&xNotified); }
+    QBindable<int> yNotifiedBindable() { return QBindable<int>(&yNotified); }
+
+private:
+    int m_xOld = 0;
+    int m_yOld = 0;
+};
+
+#endif // PROPERTYTESTER_H