`DefNewGeneration::collect` use `MarkingNMethodClosure` to process oops inside nmethods during young-gc. However, since young-gc using scavenging, instead of marking, there is no need for `MarkingNMethodClosure` -- `NMethodToOopClosure` is enough.
After switching to `NMethodToOopClosure`, `StrongRootsScope` is not needed any more, which is used to undo the effect of nmethod-claiming inside `MarkingNMethodClosure`.
After switching to `NMethodToOopClosure`, `StrongRootsScope` is not needed any more, which is used to undo the effect of nmethod-claiming inside `MarkingNMethodClosure`.
- relates to
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JDK-8367848 Parallel: Use NMethodToOopClosure during Young GC
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- Resolved
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- links to
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Commit(master)
openjdk/jdk/d0ea6686
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Review(master)
openjdk/jdk/27226