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  1. JDK
  2. JDK-8222766

Shenandoah: streamline post-LRB CAS barrier (x86)

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 14
    • 8-shenandoah, 11-shenandoah, 12, 13, 14
    • hotspot
    • gc
    • b21

    Description

      After LRB switched Shenandoah to strong to-space invariant, we can simplify CAS handling logic a bit. Notably, we can avoid the retry loop that was needed due to from-space ptrs potentially stored in memory.

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          is blocked by

          Enhancement - null JDK-8221766 Load-reference barriers for Shenandoah

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8225357 Rewire ShenandoahHeap::maybe_update_with_forwarded for contending fixups

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8231086 Shenandoah: Stronger invariant for object-arraycopy

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Enhancement - null JDK-8232782 Shenandoah: streamline post-LRB CAS barrier (aarch64)

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              shade Aleksey Shipilev
              shade Aleksey Shipilev
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                Created:
                Updated:
                Resolved: