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diff src/share/vm/memory/defNewGeneration.hpp @ 2038:74ee0db180fa

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6807801: CMS: could save/restore fewer header words during scavenge Summary: Age bits need not enter the mark-word preservation calculus; also affected, in addition to CMS, per CR synopsis above, were ParNew (but not DefNew), ParallelScavenge and G1, albeit to a lesser degree than CMS. Reviewed-by: tonyp, johnc
author ysr
date Fri, 17 Dec 2010 23:41:31 -0800
parents f95d63e2154a
children b632e80fc9dc
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line diff
--- a/src/share/vm/memory/defNewGeneration.hpp	Fri Dec 17 11:26:53 2010 -0800
+++ b/src/share/vm/memory/defNewGeneration.hpp	Fri Dec 17 23:41:31 2010 -0800
@@ -85,6 +85,7 @@
   // Preserve the mark of "obj", if necessary, in preparation for its mark
   // word being overwritten with a self-forwarding-pointer.
   void   preserve_mark_if_necessary(oop obj, markOop m);
+  void   preserve_mark(oop obj, markOop m);    // work routine used by the above
 
   // Together, these keep <object with a preserved mark, mark value> pairs.
   // They should always contain the same number of elements.