--- old/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	2013-06-05 10:56:25.000000000 +0200
+++ new/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	2013-06-05 10:56:25.000000000 +0200
@@ -46,6 +46,8 @@
 class PreGCValues;
 class MoveAndUpdateClosure;
 class RefProcTaskExecutor;
+class ParallelOldTracer;
+class STWGCTimer;
 
 // The SplitInfo class holds the information needed to 'split' a source region
 // so that the live data can be copied to two destination *spaces*.  Normally,
@@ -830,6 +832,8 @@
   friend class RefProcTaskProxy;
 
  private:
+  static STWGCTimer           _gc_timer;
+  static ParallelOldTracer    _gc_tracer;
   static elapsedTimer         _accumulated_time;
   static unsigned int         _total_invocations;
   static unsigned int         _maximum_compaction_gc_num;
@@ -873,7 +877,8 @@
 
   // Mark live objects
   static void marking_phase(ParCompactionManager* cm,
-                            bool maximum_heap_compaction);
+                            bool maximum_heap_compaction,
+                            ParallelOldTracer *gc_tracer);
 
   template <class T>
   static inline void follow_root(ParCompactionManager* cm, T* p);
@@ -1137,6 +1142,8 @@
   // Reference Processing
   static ReferenceProcessor* const ref_processor() { return _ref_processor; }
 
+  static STWGCTimer* gc_timer() { return &_gc_timer; }
+
   // Return the SpaceId for the given address.
   static SpaceId space_id(HeapWord* addr);