diff -r 000000000000 -r 1918ee327afb src/corelib/concurrent/qfuturesynchronizer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/corelib/concurrent/qfuturesynchronizer.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFUTRUESYNCHRONIZER_H
+#define QFUTRUESYNCHRONIZER_H
+
+#include <QtCore/qfuture.h>
+
+#ifndef QT_NO_CONCURRENT
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+template <typename T>
+class QFutureSynchronizer
+{
+    Q_DISABLE_COPY(QFutureSynchronizer)
+
+public:
+    QFutureSynchronizer() : m_cancelOnWait(false) { }
+    explicit QFutureSynchronizer(const QFuture<T> &future)
+        : m_cancelOnWait(false)
+    { addFuture(future); }
+    ~QFutureSynchronizer()  { waitForFinished(); }
+
+    void setFuture(const QFuture<T> &future)
+    {
+        waitForFinished();
+        m_futures.clear();
+        addFuture(future);
+    }
+
+    void addFuture(const QFuture<T> &future)
+    {
+        m_futures.append(future);
+    }
+
+    void waitForFinished()
+    {
+        if (m_cancelOnWait) {
+            for (int i = 0; i < m_futures.count(); ++i) {
+                 m_futures[i].cancel();
+            }
+        }
+        
+        for (int i = 0; i < m_futures.count(); ++i) {
+             m_futures[i].waitForFinished();
+         }
+    }
+
+    void clearFutures()
+    {
+        m_futures.clear();
+    }
+
+    QList<QFuture<T> > futures() const
+    {
+        return m_futures;
+    }
+
+    void setCancelOnWait(bool enabled)
+    {
+        m_cancelOnWait = enabled;
+    }
+
+    bool cancelOnWait() const
+    {
+        return m_cancelOnWait;
+    }
+
+protected:
+    QList<QFuture<T> > m_futures;
+    bool m_cancelOnWait;
+};
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // QT_NO_CONCURRENT
+
+#endif // QFUTRUESYNCHRONIZER_H