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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 210 insertions, 0 deletions

diff --git a/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp b/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp
new file mode 100644
index 0000000000..1bfc637402
--- /dev/null
+++ b/tests/benchmarks/corelib/thread/qwaitcondition/tst_qwaitcondition.cpp
@@ -0,0 +1,210 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QtCore>
+#include <QtTest/QtTest>
+
+#include <math.h>
+
+
+class tst_QWaitCondition : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_QWaitCondition()
+    {
+    }
+
+private slots:
+    void oscillate_data();
+    void oscillate();
+
+    void thrash_data();
+    void thrash();
+
+public:
+    static QWaitCondition local, remote;
+    enum Turn {LocalTurn, RemoteTurn};
+    static Turn turn;
+};
+
+QWaitCondition tst_QWaitCondition::local;
+QWaitCondition tst_QWaitCondition::remote;
+tst_QWaitCondition::Turn tst_QWaitCondition::turn = tst_QWaitCondition::LocalTurn;
+
+class OscillateThread : public QThread
+{
+public:
+    bool m_done;
+    bool m_useMutex;
+    unsigned long m_timeout;
+    bool m_wakeOne;
+    int count;
+
+    OscillateThread(bool useMutex, unsigned long timeout, bool wakeOne)
+    : m_done(false), m_useMutex(useMutex), m_timeout(timeout), m_wakeOne(wakeOne)
+        {}
+    void run()
+    {
+        QMutex mtx;
+        QReadWriteLock rwl;
+        count = 0;
+
+        forever {
+            if (m_done)
+                break;
+            if (m_useMutex) {
+                mtx.lock();
+                while (tst_QWaitCondition::turn == tst_QWaitCondition::LocalTurn)
+                    tst_QWaitCondition::remote.wait(&mtx, m_timeout);
+                mtx.unlock();
+            } else {
+                rwl.lockForWrite();
+                while (tst_QWaitCondition::turn == tst_QWaitCondition::LocalTurn)
+                    tst_QWaitCondition::remote.wait(&rwl, m_timeout);
+                rwl.unlock();
+            }
+            tst_QWaitCondition::turn = tst_QWaitCondition::LocalTurn;
+            if (m_wakeOne)
+                tst_QWaitCondition::local.wakeOne();
+            else
+                tst_QWaitCondition::local.wakeAll();
+            count++;
+        }
+    }
+};
+
+void tst_QWaitCondition::oscillate_data()
+{
+    QTest::addColumn<bool>("useMutex");
+    QTest::addColumn<unsigned long>("timeout");
+    QTest::addColumn<bool>("wakeOne");
+
+    QTest::newRow("mutex, timeout, one") << true << 1000ul << true;
+    QTest::newRow("readWriteLock, timeout, one") << false << 1000ul << true;
+    QTest::newRow("mutex, timeout, all") << true << 1000ul << false;
+    QTest::newRow("readWriteLock, timeout, all") << false << 1000ul << false;
+    QTest::newRow("mutex, forever, one") << true << ULONG_MAX << true;
+    QTest::newRow("readWriteLock, forever, one") << false << ULONG_MAX << true;
+    QTest::newRow("mutex, forever, all") << true << ULONG_MAX << false;
+    QTest::newRow("readWriteLock, forever, all") << false << ULONG_MAX << false;
+}
+
+void tst_QWaitCondition::oscillate()
+{
+    QMutex mtx;
+    QReadWriteLock rwl;
+
+    QFETCH(bool, useMutex);
+    QFETCH(unsigned long, timeout);
+    QFETCH(bool, wakeOne);
+
+    turn = LocalTurn;
+    OscillateThread thrd(useMutex, timeout, wakeOne);
+    thrd.start();
+
+    QBENCHMARK {
+        if (useMutex)
+            mtx.lock();
+        else
+            rwl.lockForWrite();
+        turn = RemoteTurn;
+        if (wakeOne)
+            remote.wakeOne();
+        else
+            remote.wakeAll();
+        if (useMutex) {
+            while (turn == RemoteTurn)
+                local.wait(&mtx, timeout);
+            mtx.unlock();
+        } else {
+            while (turn == RemoteTurn)
+                local.wait(&rwl, timeout);
+            rwl.unlock();
+        }
+    }
+
+    thrd.m_done = true;
+    remote.wakeAll();
+    thrd.wait();
+
+    QCOMPARE(0, 0);
+}
+
+void tst_QWaitCondition::thrash_data()
+{
+    oscillate_data();
+}
+
+void tst_QWaitCondition::thrash()
+{
+    QMutex mtx;
+    mtx.lock();
+
+    QFETCH(bool, useMutex);
+    QFETCH(unsigned long, timeout);
+    QFETCH(bool, wakeOne);
+
+    turn = LocalTurn;
+    OscillateThread thrd(useMutex, timeout, wakeOne);
+    thrd.start();
+    local.wait(&mtx, 1000ul);
+    mtx.unlock();
+
+    QBENCHMARK {
+        turn = RemoteTurn;
+        if (wakeOne)
+            remote.wakeOne();
+        else
+            remote.wakeAll();
+    }
+
+    thrd.m_done = true;
+    turn = RemoteTurn;
+    remote.wakeAll();
+    thrd.wait();
+
+    QCOMPARE(0, 0);
+}
+
+QTEST_MAIN(tst_QWaitCondition)
+#include "tst_qwaitcondition.moc"