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diff src/share/vm/gc_implementation/g1/concurrentMark.hpp @ 6812:988bf00cc564

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7200261: G1: Liveness counting inconsistencies during marking verification Summary: The clipping code in the routine that sets the bits for a range of cards, in the liveness accounting verification code was incorrect. It set all the bits in the card bitmap from the given starting index which would lead to spurious marking verification failures. Reviewed-by: brutisso, jwilhelm, jmasa
author johnc
date Thu, 27 Sep 2012 15:44:01 -0700
parents d2a62e0f25eb
children 8a5ea0a9ccc4
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/concurrentMark.hpp	Tue Sep 25 18:28:16 2012 +0200
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.hpp	Thu Sep 27 15:44:01 2012 -0700
@@ -806,7 +806,14 @@
     return _MARKING_VERBOSE_ && _verbose_level >= high_verbose;
   }
 
-  // Counting data structure accessors
+  // Liveness counting
+
+  // Utility routine to set an exclusive range of cards on the given
+  // card liveness bitmap
+  inline void set_card_bitmap_range(BitMap* card_bm,
+                                    BitMap::idx_t start_idx,
+                                    BitMap::idx_t end_idx,
+                                    bool is_par);
 
   // Returns the card number of the bottom of the G1 heap.
   // Used in biasing indices into accounting card bitmaps.