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diff src/share/vm/opto/runtime.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 c18cbe5936b8
line wrap: on
line diff
--- a/src/share/vm/opto/runtime.hpp	Tue Jan 12 14:56:46 2010 -0800
+++ b/src/share/vm/opto/runtime.hpp	Wed Jan 13 15:26:39 2010 -0800
@@ -133,8 +133,9 @@
   // Allocate storage for a objArray or typeArray
   static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
 
-  // Post-slow-path-allocation step for implementing ReduceInitialCardMarks:
-  static void maybe_defer_card_mark(JavaThread* thread);
+  // Post-slow-path-allocation, pre-initializing-stores step for
+  // implementing ReduceInitialCardMarks
+  static void new_store_pre_barrier(JavaThread* thread);
 
   // Allocate storage for a multi-dimensional arrays
   // Note: needs to be fixed for arbitrary number of dimensions