diff -r 0edda524b58c -r 1ee8caae33af src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp
--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Wed Aug 06 11:57:31 2008 -0400
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Thu Aug 21 23:36:31 2008 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright 2001-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2001-2008 Sun Microsystems, Inc.  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
@@ -227,6 +227,12 @@
   // Resize the old generation.  The reserved space for the
   // generation may be expanded in preparation for the resize.
   void resize_old_gen(size_t desired_free_space);
+
+  // Save the tops of the spaces in all generations
+  void record_gen_tops_before_GC() PRODUCT_RETURN;
+
+  // Mangle the unused parts of all spaces in the heap
+  void gen_mangle_unused_area() PRODUCT_RETURN;
 };
 
 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val)