Mercurial > hg > truffle
comparison src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp @ 1166:7b0e9cba0307
6896647: card marks can be deferred too long
Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc
| author | ysr |
|---|---|
| date | Wed, 13 Jan 2010 15:26:39 -0800 |
| parents | 44f61c24ddab |
| children | 6484c4ee11cb |
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| 1165:2dd52dea6d28 | 1166:7b0e9cba0307 |
|---|---|
| 1439 | 1439 |
| 1440 guarantee(_task_queues != NULL, "task_queues allocation failure."); | 1440 guarantee(_task_queues != NULL, "task_queues allocation failure."); |
| 1441 } | 1441 } |
| 1442 | 1442 |
| 1443 jint G1CollectedHeap::initialize() { | 1443 jint G1CollectedHeap::initialize() { |
| 1444 CollectedHeap::pre_initialize(); | |
| 1444 os::enable_vtime(); | 1445 os::enable_vtime(); |
| 1445 | 1446 |
| 1446 // Necessary to satisfy locking discipline assertions. | 1447 // Necessary to satisfy locking discipline assertions. |
| 1447 | 1448 |
| 1448 MutexLocker x(Heap_lock); | 1449 MutexLocker x(Heap_lock); |