diff src/share/vm/gc_implementation/g1/g1_globals.hpp @ 2076:c33825b68624

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 234761c55641
children 02f49b66361a
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line diff
--- a/src/share/vm/gc_implementation/g1/g1_globals.hpp	Tue Feb 01 14:05:46 2011 +0100
+++ b/src/share/vm/gc_implementation/g1/g1_globals.hpp	Wed Feb 02 10:41:20 2011 -0800
@@ -301,9 +301,13 @@
   develop(uintx, G1StressConcRegionFreeingDelayMillis, 0,                   \
           "Artificial delay during concurrent region freeing")              \
-   develop(bool, ReduceInitialCardMarksForG1, false,                        \
+  develop(bool, ReduceInitialCardMarksForG1, false,                         \
           "When ReduceInitialCardMarks is true, this flag setting "         \
-          " controls whether G1 allows the RICM optimization")
+          " controls whether G1 allows the RICM optimization")              \
+                                                                            \
+  develop(bool, G1ExitOnExpansionFailure, false,                            \
+          "Raise a fatal VM exit out of memory failure in the event "       \
+          " that heap expansion fails due to running out of swap.")