Mercurial > hg > graal-jvmci-8
comparison src/share/vm/gc_implementation/g1/heapRegion.hpp @ 4023:c6a6e936dc68
7096030: G1: PrintGCDetails enhancements
7102445: G1: Unnecessary Resource allocations during RSet scanning
Summary: Add a new per-worker thread line in the PrintGCDetails output. GC Worker Other is the difference between the elapsed time for the parallel phase of the evacuation pause and the sum of the times of the sub-phases (external root scanning, mark stack scanning, RSet updating, RSet scanning, object copying, and termination) for that worker. During RSet scanning, stack allocate DirtyCardToOopClosure objects; allocating these in a resource area was causing abnormally high GC Worker Other times while the worker thread freed ResourceArea chunks.
Reviewed-by: tonyp, jwilhelm, brutisso
| author | johnc |
|---|---|
| date | Sun, 23 Oct 2011 23:06:06 -0700 |
| parents | 5e5d4821bf07 |
| children | 6071e0581859 |
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| 4022:db89aa49298f | 4023:c6a6e936dc68 |
|---|---|
| 575 | 575 |
| 576 // Apply "cl->do_oop" to (the addresses of) all reference fields in objects | 576 // Apply "cl->do_oop" to (the addresses of) all reference fields in objects |
| 577 // allocated in the current region before the last call to "save_mark". | 577 // allocated in the current region before the last call to "save_mark". |
| 578 void oop_before_save_marks_iterate(OopClosure* cl); | 578 void oop_before_save_marks_iterate(OopClosure* cl); |
| 579 | 579 |
| 580 DirtyCardToOopClosure* | |
| 581 new_dcto_closure(OopClosure* cl, | |
| 582 CardTableModRefBS::PrecisionStyle precision, | |
| 583 HeapRegionDCTOC::FilterKind fk); | |
| 584 | |
| 585 // Note the start or end of marking. This tells the heap region | 580 // Note the start or end of marking. This tells the heap region |
| 586 // that the collector is about to start or has finished (concurrently) | 581 // that the collector is about to start or has finished (concurrently) |
| 587 // marking the heap. | 582 // marking the heap. |
| 588 | 583 |
| 589 // Note the start of a marking phase. Record the | 584 // Note the start of a marking phase. Record the |