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diff src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 2188:c33825b68624

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6923430: G1: assert(res != 0,"This should have worked.") 7007446: G1: expand the heap with a single step, not one region at a time Summary: Changed G1CollectedHeap::expand() to expand the committed space by calling VirtualSpace::expand_by() once rather than for every region in the expansion amount. This allows the success or failure of the expansion to be determined before creating any heap regions. Introduced a develop flag G1ExitOnExpansionFailure (false by default) that, when true, will exit the VM if the expansion of the committed space fails. Finally G1CollectedHeap::expand() returns a status back to it's caller so that the caller knows whether to attempt the allocation. Reviewed-by: brutisso, tonyp
author johnc
date Wed, 02 Feb 2011 10:41:20 -0800
parents 97ba643ea3ed
children 4e0069ff33df
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line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Tue Feb 01 14:05:46 2011 +0100
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Wed Feb 02 10:41:20 2011 -0800
@@ -619,8 +619,10 @@
 
 public:
   // Expand the garbage-first heap by at least the given size (in bytes!).
+  // Returns true if the heap was expanded by the requested amount;
+  // false otherwise.
   // (Rounds up to a HeapRegion boundary.)
-  virtual void expand(size_t expand_bytes);
+  bool expand(size_t expand_bytes);
 
   // Do anything common to GC's.
   virtual void gc_prologue(bool full);
@@ -981,9 +983,6 @@
   // Reference Processing accessor
   ReferenceProcessor* ref_processor() { return _ref_processor; }
 
-  // Reserved (g1 only; super method includes perm), capacity and the used
-  // portion in bytes.
-  size_t g1_reserved_obj_bytes() const { return _g1_reserved.byte_size(); }
   virtual size_t capacity() const;
   virtual size_t used() const;
   // This should be called when we're not holding the heap lock. The