--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Fri Apr 05 10:20:04 2013 -0700
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Mon Feb 11 10:31:56 2013 -0800
@@ -60,6 +60,7 @@
 class FreeChunk;
 class PromotionInfo;
 class ScanMarkedObjectsAgainCarefullyClosure;
+class TenuredGeneration;
 
 // A generic CMS bit map. It's the basis for both the CMS marking bit map
 // as well as for the mod union table (in each case only a subset of the
@@ -810,9 +811,6 @@
   // used regions of each generation to limit the extent of sweep
   void save_sweep_limits();
 
-  // Resize the generations included in the collector.
-  void compute_new_size();
-
   // A work method used by foreground collection to determine
   // what type of collection (compacting or not, continuing or fresh)
   // it should do.
@@ -909,6 +907,9 @@
   void releaseFreelistLocks() const;
   bool haveFreelistLocks() const;
 
+  // Adjust size of underlying generation
+  void compute_new_size();
+
   // GC prologue and epilogue
   void gc_prologue(bool full);
   void gc_epilogue(bool full);
@@ -1082,7 +1083,7 @@
 
  protected:
   // Shrink generation by specified size (returns false if unable to shrink)
-  virtual void shrink_by(size_t bytes);
+  void shrink_free_list_by(size_t bytes);
 
   // Update statistics for GC
   virtual void update_gc_stats(int level, bool full);
@@ -1233,6 +1234,7 @@
     CMSExpansionCause::Cause cause);
   virtual bool expand(size_t bytes, size_t expand_bytes);
   void shrink(size_t bytes);
+  void shrink_by(size_t bytes);
   HeapWord* expand_and_par_lab_allocate(CMSParGCThreadState* ps, size_t word_sz);
   bool expand_and_ensure_spooling_space(PromotionInfo* promo);
 
@@ -1293,7 +1295,13 @@
   bool must_be_youngest() const { return false; }
   bool must_be_oldest()   const { return true; }
 
-  void compute_new_size();
+  // Resize the generation after a compacting GC.  The
+  // generation can be treated as a contiguous space
+  // after the compaction.
+  virtual void compute_new_size();
+  // Resize the generation after a non-compacting
+  // collection.
+  void compute_new_size_free_list();
 
   CollectionTypes debug_collection_type() { return _debug_collection_type; }
   void rotate_debug_collection_type();
@@ -1315,7 +1323,6 @@
   virtual void shrink_by(size_t bytes);
 
  public:
-  virtual void compute_new_size();
   ASConcurrentMarkSweepGeneration(ReservedSpace rs, size_t initial_byte_size,
                                   int level, CardTableRS* ct,
                                   bool use_adaptive_freelists,