Mercurial > hg > graal-jvmci-8

diff src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 17755:96b1c2e06e25

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8027295: Free CSet takes ~50% of young pause time Summary: Improve fast card cache iteration and avoid taking locks when freeing the collection set. Reviewed-by: brutisso
author tschatzl
date Mon, 24 Mar 2014 15:30:36 +0100
parents 191174b49bec
children a07bea31ef35
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line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Mon Mar 24 15:30:30 2014 +0100
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Mon Mar 24 15:30:36 2014 +0100
@@ -763,9 +763,12 @@
   // list later). The used bytes of freed regions are accumulated in
   // pre_used. If par is true, the region's RSet will not be freed
   // up. The assumption is that this will be done later.
+  // The locked parameter indicates if the caller has already taken
+  // care of proper synchronization. This may allow some optimizations.
   void free_region(HeapRegion* hr,
                    FreeRegionList* free_list,
-                   bool par);
+                   bool par,
+                   bool locked = false);
 
   // Frees a humongous region by collapsing it into individual regions
   // and calling free_region() for each of them. The freed regions