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comparison src/share/vm/runtime/vmStructs.cpp @ 1166:7b0e9cba0307

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6896647: card marks can be deferred too long Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future. Reviewed-by: never, johnc
author ysr
date Wed, 13 Jan 2010 15:26:39 -0800
parents 9b9c1ee9b3f6
children c18cbe5936b8 1a5913bf5e19
comparison
equal deleted inserted replaced
1165:2dd52dea6d28 1166:7b0e9cba0307
307 nonstatic_field(CardTableRS, _ct_bs, CardTableModRefBSForCTRS*) \ 307 nonstatic_field(CardTableRS, _ct_bs, CardTableModRefBSForCTRS*) \
308 \ 308 \
309 nonstatic_field(CollectedHeap, _reserved, MemRegion) \ 309 nonstatic_field(CollectedHeap, _reserved, MemRegion) \
310 nonstatic_field(SharedHeap, _perm_gen, PermGen*) \ 310 nonstatic_field(SharedHeap, _perm_gen, PermGen*) \
311 nonstatic_field(CollectedHeap, _barrier_set, BarrierSet*) \ 311 nonstatic_field(CollectedHeap, _barrier_set, BarrierSet*) \
312 nonstatic_field(CollectedHeap, _defer_initial_card_mark, bool) \
312 nonstatic_field(CollectedHeap, _is_gc_active, bool) \ 313 nonstatic_field(CollectedHeap, _is_gc_active, bool) \
313 nonstatic_field(CompactibleSpace, _compaction_top, HeapWord*) \ 314 nonstatic_field(CompactibleSpace, _compaction_top, HeapWord*) \
314 nonstatic_field(CompactibleSpace, _first_dead, HeapWord*) \ 315 nonstatic_field(CompactibleSpace, _first_dead, HeapWord*) \
315 nonstatic_field(CompactibleSpace, _end_of_live, HeapWord*) \ 316 nonstatic_field(CompactibleSpace, _end_of_live, HeapWord*) \
316 \ 317 \