Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/utilities/taskqueue.hpp
src/share/vm/utilities/taskqueue.hpp
- changeset 9806
- 758c07667682
- parent 9756
- 2be326848943
- parent 9784
- 775e2bf92114
- child 10015
- eb7ce841ccec
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| 9762:c97db0855565 | 9806:758c07667682 |
|---|---|
| 789 TASKQUEUE_STATS_ONLY(stats.record_pop()); | 789 TASKQUEUE_STATS_ONLY(stats.record_pop()); |
| 790 return true; | 790 return true; |
| 791 } else { | 791 } else { |
| 792 // Otherwise, the queue contained exactly one element; we take the slow | 792 // Otherwise, the queue contained exactly one element; we take the slow |
| 793 // path. | 793 // path. |
| 794 | |
| 795 // The barrier is required to prevent reordering the two reads of _age: | |
| 796 // one is the _age.get() below, and the other is _age.top() above the if-stmt. | |
| 797 // The algorithm may fail if _age.get() reads an older value than _age.top(). | |
| 798 OrderAccess::loadload(); | |
| 794 return pop_local_slow(localBot, _age.get()); | 799 return pop_local_slow(localBot, _age.get()); |
| 795 } | 800 } |
| 796 } | 801 } |
| 797 | 802 |
| 798 typedef GenericTaskQueue<oop, mtGC> OopTaskQueue; | 803 typedef GenericTaskQueue<oop, mtGC> OopTaskQueue; |
