diff -r 000000000000 -r 1918ee327afb src/corelib/concurrent/qrunnable.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/corelib/concurrent/qrunnable.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \class QRunnable
+    \since 4.4
+    \brief The QRunnable class is the base class for all runnable objects.
+
+    \ingroup thread
+
+    The QRunnable class is an interface for representing a task or
+    piece of code that needs to be executed, represented by your
+    reimplementation of the run() function.
+
+    You can use QThreadPool to execute your code in a separate
+    thread. QThreadPool deletes the QRunnable automatically if
+    autoDelete() returns true (the default). Use setAutoDelete() to
+    change the auto-deletion flag.
+
+    QThreadPool supports executing the same QRunnable more than once
+    by calling QThreadPool::tryStart(this) from within the run() function. 
+    If autoDelete is enabled the QRunnable will be deleted when
+    the last thread exits the run function. Calling QThreadPool::start()
+    multiple times with the same QRunnable when autoDelete is enabled
+    creates a race condition and is not recommended.
+
+    \sa QThreadPool
+*/
+
+/*! \fn QRunnable::run()
+    Implement this pure virtual function in your subclass.
+*/
+
+/*! \fn QRunnable::QRunnable()
+    Constructs a QRunnable. Auto-deletion is enabled by default.
+
+    \sa autoDelete(), setAutoDelete()
+*/
+
+/*! \fn QRunnable::~QRunnable()
+    QRunnable virtual destructor.
+*/
+
+/*! \fn bool QRunnable::autoDelete() const
+
+    Returns true is auto-deletion is enabled; false otherwise.
+
+    If auto-deletion is enabled, QThreadPool will automatically delete
+    this runnable after calling run(); otherwise, ownership remains
+    with the application programmer.
+
+    \sa setAutoDelete(), QThreadPool
+*/
+
+/*! \fn bool QRunnable::setAutoDelete(bool autoDelete)
+
+    Enables auto-deletion if \a autoDelete is true; otherwise
+    auto-deletion is disabled.
+
+    If auto-deletion is enabled, QThreadPool will automatically delete
+    this runnable after calling run(); otherwise, ownership remains
+    with the application programmer.
+
+    Note that this flag must be set before calling
+    QThreadPool::start(). Calling this function after
+    QThreadPool::start() results in undefined behavior.
+
+    \sa autoDelete(), QThreadPool
+*/