Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/cardTableModRefBS.cpp
src/share/vm/memory/cardTableModRefBS.cpp
- changeset 6992
- 2c6ef90f030a
- parent 6680
- 78bbf4d43a14
- child 7051
- 1f1d373cd044
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| 6991:882004b9e7e1 | 6992:2c6ef90f030a |
|---|---|
| 427 void CardTableModRefBS::non_clean_card_iterate_possibly_parallel(Space* sp, | 427 void CardTableModRefBS::non_clean_card_iterate_possibly_parallel(Space* sp, |
| 428 MemRegion mr, | 428 MemRegion mr, |
| 429 OopsInGenClosure* cl, | 429 OopsInGenClosure* cl, |
| 430 CardTableRS* ct) { | 430 CardTableRS* ct) { |
| 431 if (!mr.is_empty()) { | 431 if (!mr.is_empty()) { |
| 432 // Caller (process_strong_roots()) claims that all GC threads | 432 // Caller (process_roots()) claims that all GC threads |
| 433 // execute this call. With UseDynamicNumberOfGCThreads now all | 433 // execute this call. With UseDynamicNumberOfGCThreads now all |
| 434 // active GC threads execute this call. The number of active GC | 434 // active GC threads execute this call. The number of active GC |
| 435 // threads needs to be passed to par_non_clean_card_iterate_work() | 435 // threads needs to be passed to par_non_clean_card_iterate_work() |
| 436 // to get proper partitioning and termination. | 436 // to get proper partitioning and termination. |
| 437 // | 437 // |
| 438 // This is an example of where n_par_threads() is used instead | 438 // This is an example of where n_par_threads() is used instead |
| 439 // of workers()->active_workers(). n_par_threads can be set to 0 to | 439 // of workers()->active_workers(). n_par_threads can be set to 0 to |
| 440 // turn off parallelism. For example when this code is called as | 440 // turn off parallelism. For example when this code is called as |
| 441 // part of verification and SharedHeap::process_strong_roots() is being | 441 // part of verification and SharedHeap::process_roots() is being |
| 442 // used, then n_par_threads() may have been set to 0. active_workers | 442 // used, then n_par_threads() may have been set to 0. active_workers |
| 443 // is not overloaded with the meaning that it is a switch to disable | 443 // is not overloaded with the meaning that it is a switch to disable |
| 444 // parallelism and so keeps the meaning of the number of | 444 // parallelism and so keeps the meaning of the number of |
| 445 // active gc workers. If parallelism has not been shut off by | 445 // active gc workers. If parallelism has not been shut off by |
| 446 // setting n_par_threads to 0, then n_par_threads should be | 446 // setting n_par_threads to 0, then n_par_threads should be |
