--- old/src/share/vm/gc_implementation/parallelScavenge/psOldGen.hpp	2010-03-10 14:49:36.000000000 -0800
+++ new/src/share/vm/gc_implementation/parallelScavenge/psOldGen.hpp	2010-03-10 14:49:36.000000000 -0800
@@ -106,6 +106,7 @@
   MemRegion reserved() const                { return _reserved; }
   virtual size_t max_gen_size()             { return _max_gen_size; }
   size_t min_gen_size()                     { return _min_gen_size; }
+  size_t init_gen_size()                    { return _init_gen_size; }
 
   // Returns limit on the maximum size of the generation.  This
   // is the same as _max_gen_size for PSOldGen but need not be
@@ -189,4 +190,6 @@
   // Debugging support
   // Save the tops of all spaces for later use during mangling.
   void record_spaces_top() PRODUCT_RETURN;
+
+  void try_to_shrink_by(size_t shrink_bytes);
 };