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  1. JDK
  2. JDK-8210832

Remove sneaky locking in class Monitor

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    • Resolution: Fixed
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      There are certain types of global lock that may be held by a Java thread while it is blocked at a safepoint but before it has written the _owner field. These locks may be sneakily acquired by the VM thread during a safepoint to avoid deadlocks.
      Alternatively, one should identify all such locks, and ensure that Java threads never block at safepoints while holding them (_no_safepoint_check_flag). While it seems as though this could increase the time to reach a safepoint (or at least increase the mean, if not the variance), the latter approach might make for a cleaner, more maintainable JVM design.

            pchilanomate Patricio Chilano Mateo
            pchilanomate Patricio Chilano Mateo
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