Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/g1RemSet.cpp
src/share/vm/gc_implementation/g1/g1RemSet.cpp
- changeset 7647
- 80ac3ee51955
- parent 7218
- 6948da6d7c13
- child 7655
- 8e9ede9dd2cd
equal
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| 7646:5743a702da65 | 7647:80ac3ee51955 |
|---|---|
| 145 CardTableModRefBS::Precise, | 145 CardTableModRefBS::Precise, |
| 146 HeapRegionDCTOC::IntoCSFilterKind); | 146 HeapRegionDCTOC::IntoCSFilterKind); |
| 147 | 147 |
| 148 // Set the "from" region in the closure. | 148 // Set the "from" region in the closure. |
| 149 _oc->set_region(r); | 149 _oc->set_region(r); |
| 150 HeapWord* card_start = _bot_shared->address_for_index(index); | 150 MemRegion card_region(_bot_shared->address_for_index(index), G1BlockOffsetSharedArray::N_words); |
| 151 HeapWord* card_end = card_start + G1BlockOffsetSharedArray::N_words; | 151 MemRegion pre_gc_allocated(r->bottom(), r->scan_top()); |
| 152 Space *sp = SharedHeap::heap()->space_containing(card_start); | 152 MemRegion mr = pre_gc_allocated.intersection(card_region); |
| 153 MemRegion sm_region = sp->used_region_at_save_marks(); | |
| 154 MemRegion mr = sm_region.intersection(MemRegion(card_start,card_end)); | |
| 155 if (!mr.is_empty() && !_ct_bs->is_card_claimed(index)) { | 153 if (!mr.is_empty() && !_ct_bs->is_card_claimed(index)) { |
| 156 // We make the card as "claimed" lazily (so races are possible | 154 // We make the card as "claimed" lazily (so races are possible |
| 157 // but they're benign), which reduces the number of duplicate | 155 // but they're benign), which reduces the number of duplicate |
| 158 // scans (the rsets of the regions in the cset can intersect). | 156 // scans (the rsets of the regions in the cset can intersect). |
| 159 _ct_bs->set_card_claimed(index); | 157 _ct_bs->set_card_claimed(index); |
