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diff --git a/src/declarative/qml/v8/qv8gccallback_p.h b/src/declarative/qml/v8/qv8gccallback_p.h
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+/****************************************************************************
+**
+** 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 QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QV8GCCALLBACK_P_H
+#define QV8GCCALLBACK_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+#include <QtCore/qthreadstorage.h>
+#include <private/qv8_p.h>
+#include <private/qintrusivelist_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QV8GCCallback
+{
+private:
+    class ThreadData;
+public:
+    static void garbageCollectorPrologueCallback(v8::GCType, v8::GCCallbackFlags);
+    static void registerGcPrologueCallback();
+
+    class Referencer {
+    public:
+        ~Referencer() {}
+        void addRelationship(QObject *object, v8::Persistent<v8::Value> handle);
+        void addRelationship(QObject *object, QObject *other);
+    private:
+        Referencer();
+        static v8::Persistent<v8::Object> *findOwnerAndStrength(QObject *qobjectOwner, bool *shouldBeStrong);
+        v8::Persistent<v8::Object> strongReferencer;
+        friend class QV8GCCallback::ThreadData;
+    };
+
+    class Node {
+    public:
+        typedef void (*PrologueCallback)(Referencer *r, Node *node);
+        Node(PrologueCallback callback);
+        ~Node();
+
+        QIntrusiveListNode node;
+        PrologueCallback prologueCallback;
+    };
+
+    static void addGcCallbackNode(Node *node);
+
+private:
+    class ThreadData {
+    public:
+        ThreadData() : gcPrologueCallbackRegistered(false) { }
+        ~ThreadData();
+        Referencer referencer;
+        bool gcPrologueCallbackRegistered;
+        QIntrusiveList<Node, &Node::node> gcCallbackNodes;
+    };
+
+    static void initializeThreadData();
+    static QThreadStorage<ThreadData *> threadData;
+};
+
+QT_END_NAMESPACE
+
+#endif // QV8GCCALLBACK_P_H
+