--- a/hotspot/src/share/vm/memory/cardTableRS.hpp	Tue Apr 19 15:46:59 2011 -0400
+++ b/hotspot/src/share/vm/memory/cardTableRS.hpp	Wed Apr 20 19:19:30 2011 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -166,4 +166,21 @@
 
 };
 
+class ClearNoncleanCardWrapper: public MemRegionClosure {
+  MemRegionClosure* _dirty_card_closure;
+  CardTableRS* _ct;
+  bool _is_par;
+private:
+  // Clears the given card, return true if the corresponding card should be
+  // processed.
+  inline bool clear_card(jbyte* entry);
+  // Work methods called by the clear_card()
+  inline bool clear_card_serial(jbyte* entry);
+  inline bool clear_card_parallel(jbyte* entry);
+
+public:
+  ClearNoncleanCardWrapper(MemRegionClosure* dirty_card_closure, CardTableRS* ct);
+  void do_MemRegion(MemRegion mr);
+};
+
 #endif // SHARE_VM_MEMORY_CARDTABLERS_HPP