AbstractOwnableSynchronizer (Java SE 9 & JDK 9 ) (original) (raw)

• java.lang.Object

• • java.util.concurrent.locks.AbstractOwnableSynchronizer

• All Implemented Interfaces:
  [Serializable](../../../../java/io/Serializable.html "interface in java.io")
  Direct Known Subclasses:
  [AbstractQueuedLongSynchronizer](../../../../java/util/concurrent/locks/AbstractQueuedLongSynchronizer.html "class in java.util.concurrent.locks"), [AbstractQueuedSynchronizer](../../../../java/util/concurrent/locks/AbstractQueuedSynchronizer.html "class in java.util.concurrent.locks")

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. TheAbstractOwnableSynchronizer 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:
Serialized Form

• • Constructor Summary

  Constructors

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

  • Method Summary

  All Methods Instance Methods Concrete Methods

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

     * ### Methods inherited from class java.lang.[Object](../../../../java/lang/Object.html "class in java.lang")  
     `[clone](../../../../java/lang/Object.html#clone--), [equals](../../../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../../../java/lang/Object.html#finalize--), [getClass](../../../../java/lang/Object.html#getClass--), [hashCode](../../../../java/lang/Object.html#hashCode--), [notify](../../../../java/lang/Object.html#notify--), [notifyAll](../../../../java/lang/Object.html#notifyAll--), [toString](../../../../java/lang/Object.html#toString--), [wait](../../../../java/lang/Object.html#wait--), [wait](../../../../java/lang/Object.html#wait-long-), [wait](../../../../java/lang/Object.html#wait-long-int-)`

• • Constructor Detail

     * #### AbstractOwnableSynchronizer  
     protected AbstractOwnableSynchronizer​()  
     Empty constructor for use by subclasses.  

  • Method Detail

    * #### setExclusiveOwnerThread  
    protected final void setExclusiveOwnerThread​([Thread](../../../../java/lang/Thread.html "class in java.lang") 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](../../../../java/lang/Thread.html "class in java.lang") 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

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