1 files changed, 129 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/thread/qwaitcondition/tst_bench_qwaitcondition.cpp b/tests/benchmarks/corelib/thread/qwaitcondition/tst_bench_qwaitcondition.cpp
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index 0000000000..19d3964c7a
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+++ b/tests/benchmarks/corelib/thread/qwaitcondition/tst_bench_qwaitcondition.cpp
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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 <QtCore/QtCore>
+#include <QTest>
+
+#include <math.h>
+
+
+class tst_QWaitCondition : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_QWaitCondition()
+    {
+    }
+
+private slots:
+    void oscillate_mutex_data();
+    void oscillate_mutex();
+    void oscillate_writelock_data();
+    void oscillate_writelock();
+};
+
+
+int turn;
+const int threadCount = 10;
+QWaitCondition cond;
+
+template <class Mutex, class Locker>
+class OscillateThread : public QThread
+{
+public:
+    Mutex *mutex;
+    int m_threadid;
+    int timeout;
+
+    void run() override
+    {
+        for (int count = 0; count < 5000; ++count) {
+
+            Locker lock(mutex);
+            while (m_threadid != turn) {
+                cond.wait(mutex, timeout);
+            }
+            turn = (turn+1) % threadCount;
+            cond.wakeAll();
+        }
+    }
+};
+
+template <class Mutex, class Locker>
+void oscillate(unsigned long timeout) {
+
+    OscillateThread<Mutex, Locker> thrd[threadCount];
+    Mutex m;
+    for (int i = 0; i < threadCount; ++i) {
+        thrd[i].mutex = &m;
+        thrd[i].m_threadid = i;
+        thrd[i].timeout = timeout;
+    }
+
+    QBENCHMARK {
+        for (int i = 0; i < threadCount; ++i) {
+            thrd[i].start();
+        }
+        for (int i = 0; i < threadCount; ++i) {
+            thrd[i].wait();
+        }
+    }
+
+}
+
+void tst_QWaitCondition::oscillate_mutex_data()
+{
+    QTest::addColumn<unsigned long>("timeout");
+
+    QTest::newRow("0") << 0ul;
+    QTest::newRow("1") << 1ul;
+    QTest::newRow("1000") << 1000ul;
+    QTest::newRow("forever") << ULONG_MAX;
+}
+
+void tst_QWaitCondition::oscillate_mutex()
+{
+    QFETCH(unsigned long, timeout);
+    oscillate<QMutex, QMutexLocker<QMutex>>(timeout);
+}
+
+void tst_QWaitCondition::oscillate_writelock_data()
+{
+    oscillate_mutex_data();
+}
+
+void tst_QWaitCondition::oscillate_writelock()
+{
+    QFETCH(unsigned long, timeout);
+    oscillate<QReadWriteLock, QWriteLocker>(timeout);
+}
+
+QTEST_MAIN(tst_QWaitCondition)
+
+#include "tst_bench_qwaitcondition.moc"