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  1. JDK
  2. JDK-8231087

Shenandoah: Self-fixing load reference barriers for C1/C2

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    • gc
    • b15
    • generic
    • generic

    Description

      One significant contributor to Shenandoah's barrier performance is the LRB-midpath performance: when heap is unstable *and* the loaded reference is in cset, we then check if the object is forwarded and if not, call out into the slow-path. A way to avoid this is to update references right in the slow-path. This avoids triggering the cset-check on next access of the same field.

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              rkennke Roman Kennke
              rkennke Roman Kennke
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