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diff src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 4781:bacb651cf5bf

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7113006: G1: excessive ergo output when an evac failure happens Summary: Introduce a flag that is set when a heap expansion attempt during a GC fails so that we do not consantly attempt to expand the heap when it's going to fail anyway. This not only prevents the excessive ergo output (which is generated when a region allocation fails) but also avoids excessive and ultimately unsuccessful expansion attempts. Reviewed-by: jmasa, johnc
author tonyp
date Thu, 05 Jan 2012 05:54:01 -0500
parents 441e946dc1af
children 023652e49ac0
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--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Wed Jan 04 07:56:13 2012 -0800
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Thu Jan 05 05:54:01 2012 -0500
@@ -285,6 +285,14 @@
   // Typically, it is not full so we should re-use it during the next GC.
   HeapRegion* _retained_old_gc_alloc_region;
 
+  // It specifies whether we should attempt to expand the heap after a
+  // region allocation failure. If heap expansion fails we set this to
+  // false so that we don't re-attempt the heap expansion (it's likely
+  // that subsequent expansion attempts will also fail if one fails).
+  // Currently, it is only consulted during GC and it's reset at the
+  // start of each GC.
+  bool _expand_heap_after_alloc_failure;
+
   // It resets the mutator alloc region before new allocations can take place.
   void init_mutator_alloc_region();