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diff src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 1705:2d160770d2e5

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6814437: G1: remove the _new_refs array Summary: The per-worker _new_refs array is used to hold references that point into the collection set. It is populated during RSet updating and subsequently processed. In the event of an evacuation failure it processed again to recreate the RSets of regions in the collection set. Remove the per-worker _new_refs array by processing the references directly. Use a DirtyCardQueue to hold the cards containing the references so that the RSets of regions in the collection set can be recreated when handling an evacuation failure. Reviewed-by: iveresov, jmasa, tonyp
author johnc
date Mon, 02 Aug 2010 12:51:43 -0700
parents 4e5661ba9d98
children 5f429ee79634
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line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Sat Jul 31 15:10:59 2010 +0100
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Mon Aug 02 12:51:43 2010 -0700
@@ -505,6 +505,12 @@
   // A function to check the consistency of dirty card logs.
   void check_ct_logs_at_safepoint();
 
+  // A DirtyCardQueueSet that is used to hold cards that contain
+  // references into the current collection set. This is used to
+  // update the remembered sets of the regions in the collection
+  // set in the event of an evacuation failure.
+  DirtyCardQueueSet _into_cset_dirty_card_queue_set;
+
   // After a collection pause, make the regions in the CS into free
   // regions.
   void free_collection_set(HeapRegion* cs_head);
@@ -661,6 +667,13 @@
   // A set of cards where updates happened during the GC
   DirtyCardQueueSet& dirty_card_queue_set() { return _dirty_card_queue_set; }
 
+  // A DirtyCardQueueSet that is used to hold cards that contain
+  // references into the current collection set. This is used to
+  // update the remembered sets of the regions in the collection
+  // set in the event of an evacuation failure.
+  DirtyCardQueueSet& into_cset_dirty_card_queue_set()
+        { return _into_cset_dirty_card_queue_set; }
+
   // Create a G1CollectedHeap with the specified policy.
   // Must call the initialize method afterwards.
   // May not return if something goes wrong.
@@ -715,7 +728,9 @@
     OrderAccess::fence();
   }
 
-  void iterate_dirty_card_closure(bool concurrent, int worker_i);
+  void iterate_dirty_card_closure(CardTableEntryClosure* cl,
+                                  DirtyCardQueue* into_cset_dcq,
+                                  bool concurrent, int worker_i);
 
   // The shared block offset table array.
   G1BlockOffsetSharedArray* bot_shared() const { return _bot_shared; }