Release-1.6.3-20100603

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diff --git a/qtools/qmutex.h b/qtools/qmutex.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMUTEX_H
+#define QMUTEX_H
+
+#include "qglobal.h"
+
+class QMutexPrivate;
+
+class QMutex
+{
+public:
+    QMutex();
+    ~QMutex();
+
+    void lock();
+    bool tryLock();
+    void unlock();
+
+private:
+    QMutex(const QMutex &);
+    QMutex &operator=(const QMutex &);
+
+    QMutexPrivate *d;
+};
+
+class QMutexLocker
+{
+  public:
+    QMutexLocker(QMutex *m) : m_mutex(m)
+    {
+      m_mutex->lock();
+    }
+   ~QMutexLocker()
+    {
+      m_mutex->unlock();
+    }
+    QMutex *mutex() const { return m_mutex; }
+
+  private:
+    QMutex *m_mutex;
+};
+
+#endif // QMUTEX_H