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  1. JDK
  2. JDK-8215893

Add better abstraction for pinning G1 concurrent marking bitmaps.

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    Details

    • Type: Enhancement
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 12
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc
    • Introduced In Version:
      12
    • CPU:
      generic
    • OS:
      generic

      Description

      In the linked issue - JDK-8211425, G1 concurrent marking bitmaps are pinned in memory by calling commit_and_set_special() which was added as part of its implementation.

      A better approach would be to create pinned bitmaps during their construction which is currently done in G1CollectedHeap::initialize(). Possible solution is to add an argument to constructors for G1RegionToSpaceMapper and G1PageBasedVirtualSpace.

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              • Assignee:
                kkharbas Kishor Kharbas
                Reporter:
                kkharbas Kishor Kharbas
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                • Created:
                  Updated: