--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Mon Mar 02 16:37:04 2009 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Fri Mar 06 13:50:14 2009 -0800
@@ -457,6 +457,10 @@
   // And it's mod ref barrier set, used to track updates for the above.
   ModRefBarrierSet* _mr_bs;
 
+  // A set of cards that cover the objects for which the Rsets should be updated
+  // concurrently after the collection.
+  DirtyCardQueueSet _dirty_card_queue_set;
+
   // The Heap Region Rem Set Iterator.
   HeapRegionRemSetIterator** _rem_set_iterator;
 
@@ -666,6 +670,9 @@
 
   RefToScanQueue *task_queue(int i);
 
+  // A set of cards where updates happened during the GC
+  DirtyCardQueueSet& dirty_card_queue_set() { return _dirty_card_queue_set; }
+
   // Create a G1CollectedHeap with the specified policy.
   // Must call the initialize method afterwards.
   // May not return if something goes wrong.