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  1. JDK
  2. JDK-8258239

Shenandoah: Used wrong closure to mark concurrent roots

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • 17
    • 15, 16, 17
    • hotspot
    • None
    • gc
    • b02

    Description

      During concurrent mark phase, there should not have forwarded objects in roots. Therefore, it should use ShenandoahMarkRefsClosure to mark concurrent roots, instead of ShenandoahMarkResolveRefsClosure.

      Note: this is *not* a correctness bug, but performance one, as ShenandoahMarkResolveRefsClosure closure unnecessarily resolves forwarding pointers, where always resolved to themselves.

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              zgu Zhengyu Gu
              zgu Zhengyu Gu
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                Created:
                Updated:
                Resolved: