Class AbstractOwnableSynchronizer

java.lang.Object
java.util.concurrent.locks.AbstractOwnableSynchronizer
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
AbstractQueuedLongSynchronizer, AbstractQueuedSynchronizer
public abstract class AbstractOwnableSynchronizer extends Object implements Serializable
A synchronizer that may be exclusively owned by a thread. This class provides a basis for creating locks and related synchronizers that may entail a notion of ownership. The AbstractOwnableSynchronizer class itself does not manage or use this information. However, subclasses and tools may use appropriately maintained values to help control and monitor access and provide diagnostics.
Since:
1.6
See Also:

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    AbstractOwnableSynchronizer()
    Empty constructor for use by subclasses.

  • Method Summary

    Modifier and Type
    Method
    Description
    protected final Thread
    getExclusiveOwnerThread()
    Returns the thread last set by setExclusiveOwnerThread, or null if never set.
    protected final void
    setExclusiveOwnerThread(Thread thread)
    Sets the thread that currently owns exclusive access.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • AbstractOwnableSynchronizer

      protected AbstractOwnableSynchronizer()
      Empty constructor for use by subclasses.

  • Method Details

    • setExclusiveOwnerThread

      protected final void setExclusiveOwnerThread(Thread thread)
      Sets the thread that currently owns exclusive access. A null argument indicates that no thread owns access. This method does not otherwise impose any synchronization or volatile field accesses.
      Parameters:
      thread - the owner thread

    • getExclusiveOwnerThread

      protected final Thread getExclusiveOwnerThread()
      Returns the thread last set by setExclusiveOwnerThread, or null if never set. This method does not otherwise impose any synchronization or volatile field accesses.
      Returns:
      the owner thread