Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp
src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp
- changeset 2060
- 2d160770d2e5
- parent 2021
- 5cbac8938c4c
- child 2314
- f95d63e2154a
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| 2059:63f4675ac87d | 2060:2d160770d2e5 |
|---|---|
| 337 // region. See above on how this can happen. | 337 // region. See above on how this can happen. |
| 338 | 338 |
| 339 return res; | 339 return res; |
| 340 } | 340 } |
| 341 | 341 |
| 342 void ConcurrentG1Refine::clean_up_cache(int worker_i, G1RemSet* g1rs) { | 342 void ConcurrentG1Refine::clean_up_cache(int worker_i, |
| 343 G1RemSet* g1rs, | |
| 344 DirtyCardQueue* into_cset_dcq) { | |
| 343 assert(!use_cache(), "cache should be disabled"); | 345 assert(!use_cache(), "cache should be disabled"); |
| 344 int start_idx; | 346 int start_idx; |
| 345 | 347 |
| 346 while ((start_idx = _hot_cache_par_claimed_idx) < _n_hot) { // read once | 348 while ((start_idx = _hot_cache_par_claimed_idx) < _n_hot) { // read once |
| 347 int end_idx = start_idx + _hot_cache_par_chunk_size; | 349 int end_idx = start_idx + _hot_cache_par_chunk_size; |
| 351 // The current worker has successfully claimed the chunk [start_idx..end_idx) | 353 // The current worker has successfully claimed the chunk [start_idx..end_idx) |
| 352 end_idx = MIN2(end_idx, _n_hot); | 354 end_idx = MIN2(end_idx, _n_hot); |
| 353 for (int i = start_idx; i < end_idx; i++) { | 355 for (int i = start_idx; i < end_idx; i++) { |
| 354 jbyte* entry = _hot_cache[i]; | 356 jbyte* entry = _hot_cache[i]; |
| 355 if (entry != NULL) { | 357 if (entry != NULL) { |
| 356 g1rs->concurrentRefineOneCard(entry, worker_i); | 358 if (g1rs->concurrentRefineOneCard(entry, worker_i, true)) { |
| 359 // 'entry' contains references that point into the current | |
| 360 // collection set. We need to record 'entry' in the DCQS | |
| 361 // that's used for that purpose. | |
| 362 // | |
| 363 // The only time we care about recording cards that contain | |
| 364 // references that point into the collection set is during | |
| 365 // RSet updating while within an evacuation pause. | |
| 366 // In this case worker_i should be the id of a GC worker thread | |
| 367 assert(SafepointSynchronize::is_at_safepoint(), "not during an evacuation pause"); | |
| 368 assert(worker_i < (int) DirtyCardQueueSet::num_par_ids(), "incorrect worker id"); | |
| 369 into_cset_dcq->enqueue(entry); | |
| 370 } | |
| 357 } | 371 } |
| 358 } | 372 } |
| 359 } | 373 } |
| 360 } | 374 } |
| 361 } | 375 } |
