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7005808: G1: re-enable ReduceInitialCardMarks for G1

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Remove the extra guard to allow G1 to use ReduceInitialCardMarks

Reviewed-by: jmasa, tonyp, johnc, ysr
This commit is contained in:
Bengt Rutisson 2011-09-28 08:21:30 +02:00
parent 78662d3b17
commit cfe349b1e0
2 changed files with 1 additions and 12 deletions
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9
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
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@ -1337,12 +1337,7 @@ public:
// storage in the heap comes from a young region or not.
// See ReduceInitialCardMarks.
virtual bool can_elide_tlab_store_barriers() const {
// 6920090: Temporarily disabled, because of lingering
// instabilities related to RICM with G1. In the
// interim, the option ReduceInitialCardMarksForG1
// below is left solely as a debugging device at least
// until 6920109 fixes the instabilities.
return ReduceInitialCardMarksForG1;
return true;
}
virtual bool card_mark_must_follow_store() const {
@ -1366,8 +1361,6 @@ public:
// update logging post-barrier, we don't maintain remembered set
// information for young gen objects.
virtual bool can_elide_initializing_store_barrier(oop new_obj) {
// Re 6920090, 6920109 above.
assert(ReduceInitialCardMarksForG1, "Else cannot be here");
return is_in_young(new_obj);
}

4
hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp
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@ -290,10 +290,6 @@
"each evacuation pause in order to artificially fill up the " \
"heap and stress the marking implementation.") \
\
develop(bool, ReduceInitialCardMarksForG1, false, \
"When ReduceInitialCardMarks is true, this flag setting " \
" 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.") \