Module openj9.dtfj
Package com.ibm.dtfj.java

Interface JavaMonitor

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      boolean equals​(Object obj)
      Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
      Iterator getEnterWaiters()
      Get the set of threads waiting to enter the monitor
      ImagePointer getID()
      Get the identifier for this monitor
      String getName()
      Note that the name of a JavaMonitor is not necessarily meaningful but is provided here as it is usually present in the running VM.
      Iterator getNotifyWaiters()
      Get the set of threads waiting to be notified on the monitor (in the Object.wait method)
      JavaObject getObject()
      Get the object associated with this monitor.
      JavaThread getOwner()
      Get the thread which currently owns the monitor
      int hashCode()
      Answers an integer hash code for the receiver.

    • Method Detail

      • getObject

        JavaObject getObject()
        Get the object associated with this monitor.
        Returns:
        the object associated with this monitor, or null if this is a raw monitor or a valid object could not be retrieved.

      • getName

        String getName()
        throws CorruptDataException
        Note that the name of a JavaMonitor is not necessarily meaningful but is provided here as it is usually present in the running VM. If there is no name for the monitor a synthetic name will be created by DTFJ.
        Returns:
        the name of the monitor (never null)
        Throws:
        CorruptDataException

      • getEnterWaiters

        Iterator getEnterWaiters()
        Get the set of threads waiting to enter the monitor
        Returns:
        an iterator over the collection of threads waiting to enter this monitor
        See Also:
        JavaThread, CorruptData

      • getNotifyWaiters

        Iterator getNotifyWaiters()
        Get the set of threads waiting to be notified on the monitor (in the Object.wait method)
        Returns:
        an iterator over the collection of threads waiting to be notified on this monitor
        See Also:
        JavaThread, CorruptData

      • getID

        ImagePointer getID()
        Get the identifier for this monitor
        Returns:
        The pointer which uniquely identifies this monitor in memory.

      • equals

        boolean equals​(Object obj)
        Description copied from class: java.lang.Object
        Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison. The implementation in Object answers true only if the argument is the exact same object as the receiver (==).
        Overrides:
        equals in class Object
        Parameters:
        obj -
        Returns:
        True if the given object refers to the same Java Monitor in the image
        See Also:
        Object.hashCode()

      • hashCode

        int hashCode()
        Description copied from class: java.lang.Object
        Answers an integer hash code for the receiver. Any two objects which answer true when passed to .equals must answer the same value for this method.
        Overrides:
        hashCode in class Object
        Returns:
        the receiver's hash.
        See Also:
        Object.equals(java.lang.Object)