--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Thu Apr 21 01:16:20 2011 -0700
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Thu Apr 21 10:23:44 2011 -0700
@@ -28,7 +28,9 @@
 #include "gc_implementation/g1/concurrentMark.hpp"
 #include "gc_implementation/g1/g1AllocRegion.hpp"
 #include "gc_implementation/g1/g1RemSet.hpp"
+#include "gc_implementation/g1/g1MonitoringSupport.hpp"
 #include "gc_implementation/g1/heapRegionSets.hpp"
+#include "gc_implementation/shared/hSpaceCounters.hpp"
 #include "gc_implementation/parNew/parGCAllocBuffer.hpp"
 #include "memory/barrierSet.hpp"
 #include "memory/memRegion.hpp"
@@ -57,6 +59,7 @@
 class ConcurrentMark;
 class ConcurrentMarkThread;
 class ConcurrentG1Refine;
+class GenerationCounters;
 
 typedef OverflowTaskQueue<StarTask>         RefToScanQueue;
 typedef GenericTaskQueueSet<RefToScanQueue> RefToScanQueueSet;
@@ -236,6 +239,9 @@
   // current collection.
   HeapRegion* _gc_alloc_region_list;
 
+  // Helper for monitoring and management support.
+  G1MonitoringSupport* _g1mm;
+
   // Determines PLAB size for a particular allocation purpose.
   static size_t desired_plab_sz(GCAllocPurpose purpose);
 
@@ -550,6 +556,9 @@
   HeapWord* expand_and_allocate(size_t word_size);
 
 public:
+
+  G1MonitoringSupport* g1mm() { return _g1mm; }
+
   // Expand the garbage-first heap by at least the given size (in bytes!).
   // Returns true if the heap was expanded by the requested amount;
   // false otherwise.