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diff --git a/framework/inc/framework/iguard.hxx b/framework/inc/framework/iguard.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef __FRAMEWORK_THREADHELP_IGUARD_H_
+#define __FRAMEWORK_THREADHELP_IGUARD_H_
+
+//_________________________________________________________________________________________________________________
+//  includes
+//_________________________________________________________________________________________________________________
+
+#include <sal/types.h>
+
+//_________________________________________________________________________________________________________________
+//  namespace
+//_________________________________________________________________________________________________________________
+
+namespace framework{
+
+//_________________________________________________________________________________________________________________
+//  declarations
+//_________________________________________________________________________________________________________________
+
+/*-************************************************************************************************************//**
+    @descr          interface for guarding a lock
+*//*-*************************************************************************************************************/
+class SAL_NO_VTABLE IGuard
+{
+    //-------------------------------------------------------------------------------------------------------------
+    //  public methods
+    //-------------------------------------------------------------------------------------------------------------
+    public:
+
+        /** clears the lock. If the guard does not currently hold the lock, nothing happens.
+        */
+        virtual void clear() = 0;
+
+        /** attempts to re-establishes the lock, blocking until the attempt is successful.
+        */
+        virtual void reset() = 0;
+
+};      //  class IGuard
+
+}       //  namespace framework
+
+#endif  //  #ifndef __FRAMEWORK_THREADHELP_IGUARD_H_