JDK-8236981 : Shenandoah: Remove ShenandoahTraversalUpdateRefsClosure
- Type: Bug
- Component: hotspot
- Sub-Component: gc
- Affected Version: 15
- Priority: P2
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2020-01-12
- Updated: 2020-08-01
- Resolved: 2020-03-06
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| JDK 15 |
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15 b14Fixed  |
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Description
JDK-8231324 introduced ShenandoahTraversalUpdateRefsClosure. This is used in stw_process_weak_roots() and compared to the regular ShenandoahUpdateRefsClosure, it only checks for additional in_traversal_set(). However, in-traversal-set don't need to be updated, only in-cset that is also checked. It's reasonable to use the equivalent ShenandoahUpdateRefsClosure. This is a performance issue during the final-traversal-pause.
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