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diff src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp @ 1166:7b0e9cba0307

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6896647: card marks can be deferred too long Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future. Reviewed-by: never, johnc
author ysr
date Wed, 13 Jan 2010 15:26:39 -0800
parents 39b01ab7035a
children 0bfd3fb24150
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Tue Jan 12 14:56:46 2010 -0800
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Wed Jan 13 15:26:39 2010 -0800
@@ -54,7 +54,6 @@
  protected:
   static inline size_t total_invocations();
   HeapWord* allocate_new_tlab(size_t size);
-  void fill_all_tlabs(bool retire);
 
  public:
   ParallelScavengeHeap() : CollectedHeap() {
@@ -191,6 +190,10 @@
     return true;
   }
 
+  virtual bool card_mark_must_follow_store() const {
+    return false;
+  }
+
   // Return true if we don't we need a store barrier for
   // initializing stores to an object at this address.
   virtual bool can_elide_initializing_store_barrier(oop new_obj);