Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/utilities/taskqueue.hpp
src/share/vm/utilities/taskqueue.hpp
- changeset 9784
- 775e2bf92114
- parent 9728
- fa7fe6dae563
- child 9806
- 758c07667682
- child 9982
- 72053ed6f8d4
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| 9783:14b0d7d60628 | 9784:775e2bf92114 |
|---|---|
| 712 TASKQUEUE_STATS_ONLY(stats.record_pop()); | 712 TASKQUEUE_STATS_ONLY(stats.record_pop()); |
| 713 return true; | 713 return true; |
| 714 } else { | 714 } else { |
| 715 // Otherwise, the queue contained exactly one element; we take the slow | 715 // Otherwise, the queue contained exactly one element; we take the slow |
| 716 // path. | 716 // path. |
| 717 | |
| 718 // The barrier is required to prevent reordering the two reads of _age: | |
| 719 // one is the _age.get() below, and the other is _age.top() above the if-stmt. | |
| 720 // The algorithm may fail if _age.get() reads an older value than _age.top(). | |
| 721 OrderAccess::loadload(); | |
| 717 return pop_local_slow(localBot, _age.get()); | 722 return pop_local_slow(localBot, _age.get()); |
| 718 } | 723 } |
| 719 } | 724 } |
| 720 | 725 |
| 721 typedef GenericTaskQueue<oop, mtGC> OopTaskQueue; | 726 typedef GenericTaskQueue<oop, mtGC> OopTaskQueue; |
