[valhalla/jep390] Diagnose synchronization on @ValueBased classes

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    • Type: Sub-task
    • Resolution: Fixed
    • Priority: P3
    • repo-valhalla
    • Affects Version/s: 16
    • Component/s: hotspot
    • None

      Enhance the work done in JDK-8242263 to warn about synchronization performed on any class that is declared with a @ValueBased annotation.

      The same behaviors as implemented by JDK-8242263 should apply—VM abort, logged warning, or JFR event.

      The -XX:DiagnoseSyncOnPrimitiveWrappers flag should probably be renamed to indicate that it's a check on all value-based classes. (It is probably *not* useful to have two different knobs, one for primitives and one for other value-based classes.)

            Assignee:
            Lois Foltan
            Reporter:
            Dan Smith
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              Created:
              Updated:
              Resolved: