Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp
src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp
- changeset 9046
- 4edb0f406a2c
- parent 8316
- 626f594dffa6
- child 9122
- 024be04bb151
- child 9327
- f96fcd9e1e1b
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| 8909:e0c000e8eb75 | 9046:4edb0f406a2c |
|---|---|
| 512 link_to_all(prt); | 512 link_to_all(prt); |
| 513 } | 513 } |
| 514 | 514 |
| 515 PerRegionTable* first_prt = _fine_grain_regions[ind]; | 515 PerRegionTable* first_prt = _fine_grain_regions[ind]; |
| 516 prt->set_collision_list_next(first_prt); | 516 prt->set_collision_list_next(first_prt); |
| 517 _fine_grain_regions[ind] = prt; | 517 // The assignment into _fine_grain_regions allows the prt to |
| 518 // start being used concurrently. In addition to | |
| 519 // collision_list_next which must be visible (else concurrent | |
| 520 // parsing of the list, if any, may fail to see other entries), | |
| 521 // the content of the prt must be visible (else for instance | |
| 522 // some mark bits may not yet seem cleared or a 'later' update | |
| 523 // performed by a concurrent thread could be undone when the | |
| 524 // zeroing becomes visible). This requires store ordering. | |
| 525 OrderAccess::release_store_ptr((volatile PerRegionTable*)&_fine_grain_regions[ind], prt); | |
| 518 _n_fine_entries++; | 526 _n_fine_entries++; |
| 519 | 527 |
| 520 if (G1HRRSUseSparseTable) { | 528 if (G1HRRSUseSparseTable) { |
| 521 // Transfer from sparse to fine-grain. | 529 // Transfer from sparse to fine-grain. |
| 522 SparsePRTEntry *sprt_entry = _sparse_table.get_entry(from_hrm_ind); | 530 SparsePRTEntry *sprt_entry = _sparse_table.get_entry(from_hrm_ind); |
