JDK-8225255 : Make SATB qset lock-free
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Affected Version: 13
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2019-06-04
- Updated: 2019-07-01
- Resolved: 2019-06-26
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| JDK 14 |
|---|
14 b03Fixed  |
Related Reports
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Relates :
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Description
The SATBMarkQueueSet usage model is pretty simple, and doesn't need a lot of the mechanism presently provided by PtrQueueSet (to also support G1DirtyCardQueueSet). If we moved most of the existing PtrQueueSet to G1DirtyCardQueueSet, we could improve SATBMarkQueueSet, including using a LockFreeStack to manage the set of completed buffers, rather than a locked list, eliminating the need for the "access" ranked SATB_Q_CBL_mon.