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diff src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp @ 263:12eea04c8b06

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6672698: mangle_unused_area() should not remangle the entire heap at each collection. Summary: Maintain a high water mark for the allocations in a space and mangle only up to that high water mark. Reviewed-by: ysr, apetrusenko
author jmasa
date Wed, 09 Jul 2008 15:08:55 -0700
parents fcbfc50865ab
children 850fdf70db2b
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line diff
--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Fri Jun 27 19:12:11 2008 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp	Wed Jul 09 15:08:55 2008 -0700
@@ -213,6 +213,12 @@
   // Resize the old generation.  The reserved space for the
   // generation may be expanded in preparation for the resize.
   void resize_old_gen(size_t desired_free_space);
+
+  // Save the tops of the spaces in all generations
+  void record_gen_tops_before_GC() PRODUCT_RETURN;
+
+  // Mangle the unused parts of all spaces in the heap
+  void gen_mangle_unused_area() PRODUCT_RETURN;
 };
 
 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val)