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  1. JDK
  2. JDK-8293920

G1: Add index based heap region iteration

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 20
    • 20
    • hotspot
    • gc
    • b16

    Description

      Currently, heap region iteration uses `HeapRegionClosure`, which accepts a `HeapRegion*`. In some cases, region-index alone is used on the fast path. Retrieving the region index from `HeapRegion*` incurs unnecessary memory access.

       JDK-8293210 is an example of such case.

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          relates to

          Enhancement - null JDK-8293210 G1: Remove redundant check in G1FreeHumongousRegionClosure

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

          Commit Commit openjdk/jdk/a93cf926

          Review Review openjdk/jdk/10301

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              ayang Albert Yang
              ayang Albert Yang
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              Dates

                Created:
                Updated:
                Resolved: