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diff --git a/canvas/inc/canvas/prioritybooster.hxx b/canvas/inc/canvas/prioritybooster.hxx
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+++ b/canvas/inc/canvas/prioritybooster.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 INCLUDED_CANVAS_PRIORITYBOOSTER_HXX
+#define INCLUDED_CANVAS_PRIORITYBOOSTER_HXX
+
+#include <sal/types.h>
+
+#include <memory>
+
+
+namespace canvas
+{
+    namespace tools
+    {
+        struct PriorityBooster_Impl;
+
+        /** Simplistic RAII object, to temporarily boost execution
+            priority for the current scope.
+         */
+        class PriorityBooster
+        {
+        public:
+            /** Create booster, with given priority delta
+
+                @param nDelta
+                Difference in execution priority. Positive values
+                increase prio, negative values decrease prio.
+             */
+            explicit PriorityBooster( sal_Int32 nDelta );
+            ~PriorityBooster();
+
+        private:
+            // also disables copy constructor and assignment operator
+            const ::std::auto_ptr< PriorityBooster_Impl > mpImpl;
+        };
+    }
+}
+
+#endif /* INCLUDED_CANVAS_PRIORITYBOOSTER_HXX */
+// eof