Package io.deephaven.engine.liveness

Class StandaloneLivenessManager

java.lang.Object
io.deephaven.engine.liveness.StandaloneLivenessManager
All Implemented Interfaces:
LogOutputAppendable, LivenessManager
public class StandaloneLivenessManager extends Object implements LivenessManager, LogOutputAppendable
Simple LivenessManager implementation.

  • Constructor Details

    • StandaloneLivenessManager

      public StandaloneLivenessManager(boolean enforceStrongReachability)
      Parameters:
      enforceStrongReachability - Whether this LivenessManager should maintain strong references to its referents

  • Method Details

    • initializeTransientFieldsForLiveness

      @VisibleForTesting public final void initializeTransientFieldsForLiveness()
      Package-private for Serializable sub-classes to use in readObject only. Public to allow unit tests in another package to work around mock issues where the constructor is never invoked.

    • tryManage

      public final boolean tryManage(@NotNull @NotNull LivenessReferent referent)
      Description copied from interface: LivenessManager
      Attempt to add referent to this manager. Will succeed if referent is live and if this manager is not a LivenessReferent or is live.
      Specified by:
      tryManage in interface LivenessManager
      Parameters:
      referent - The referent to add
      Returns:
      Whether the referent was in fact added

    • tryUnmanage

      public final boolean tryUnmanage(@NotNull @NotNull LivenessReferent referent)
      Description copied from interface: LivenessManager
      If this manager manages referent one or more times, drop one such reference. If this manager is also a LivenessReferent, then this method is a no-op if this is not live.

      Strongly prefer using LivenessManager.tryUnmanage(Stream)} when multiple referents should be unmanaged.

      Specified by:
      tryUnmanage in interface LivenessManager
      Parameters:
      referent - The referent to drop
      Returns:
      If this node is also a LivenessReferent, whether this node was live and thus in fact tried to drop a reference. Else always returns true if dropping a reference via this method is supported by the implementation.

    • tryUnmanage

      public final boolean tryUnmanage(@NotNull @NotNull Stream<? extends LivenessReferent> referents)
      Description copied from interface: LivenessManager
      For each referent in referents, if this manager manages referent one or more times, drop one such reference. If this manager is also a LivenessReferent, then this method is a no-op if this is not live.
      Specified by:
      tryUnmanage in interface LivenessManager
      Parameters:
      referents - The referents to drop
      Returns:
      If this node is also a LivenessReferent, whether this node was live and thus in fact tried to drop the references. Else always returns true if dropping a reference via this method is supported by the implementation.

    • append

      public LogOutput append(LogOutput logOutput)
      Specified by:
      append in interface LogOutputAppendable