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  1. JDK
  2. JDK-8247299

[lworld] Disable UseBiasedLocking by default

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: repo-valhalla
    • Fix Version/s: repo-valhalla
    • Component/s: hotspot
    • Labels:

      Description

      UseBiasedLocking was made default during merge work, there are greater issues with mark word use: JDK-8247298.

      Ensure there is further testing with and without UseBiasedLocking, and set the default back to false once JDK-8247298 is resolved.

        Attachments

          Issue Links

          blocks

          Enhancement - null JDK-8255045 [lworld] LoadNode::Value() use of markWord::prototype() may strip type bits

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

          Enhancement - null JDK-8255046 [lworld] JIT should make use of array layout encoding in markWord

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8255396 [lworld] locking breaks oopDesc is_flatArray/is_nullfreeArray type checks

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8247298 [lworld] Review use of oopDesc & mark word for alternative inline type behavior

          • P3 - Major loss of function.
          • Open
          links to

          Commit Commit openjdk/valhalla/3a7c9fe6

          Review Review openjdk/valhalla/234

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              Assignee:
              dsimms David Simms
              Reporter:
              dsimms David Simms
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                Dates

                Created:
                Updated:
                Resolved: