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diff src/share/vm/gc_implementation/g1/concurrentMark.hpp @ 4827:2e966d967c5c

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7121547: G1: High number mispredicted branches while iterating over the marking bitmap Summary: There is a high number of mispredicted branches associated with calling BitMap::iteratate() from within CMBitMapRO::iterate(). Implement a version of CMBitMapRO::iterate() directly using inline-able routines. Reviewed-by: tonyp, iveresov
author johnc
date Fri, 13 Jan 2012 13:27:48 -0800
parents 2ace1c4ee8da
children 851b58c26def
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/concurrentMark.hpp	Fri Jan 13 01:55:22 2012 -0800
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.hpp	Fri Jan 13 13:27:48 2012 -0800
@@ -84,8 +84,8 @@
   }
 
   // iteration
-  bool iterate(BitMapClosure* cl) { return _bm.iterate(cl); }
-  bool iterate(BitMapClosure* cl, MemRegion mr);
+  inline bool iterate(BitMapClosure* cl, MemRegion mr);
+  inline bool iterate(BitMapClosure* cl);
 
   // Return the address corresponding to the next marked bit at or after
   // "addr", and before "limit", if "limit" is non-NULL.  If there is no