co.paralleluniverse.strands.concurrent

Class AbstractOwnableSynchronizer

java.lang.Object

co.paralleluniverse.strands.concurrent.AbstractOwnableSynchronizer

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

AbstractQueuedLongSynchronizer, AbstractQueuedSynchronizer

public abstract class AbstractOwnableSynchronizer
extends java.lang.Object
implements java.io.Serializable

A synchronizer that may be exclusively owned by a strand. 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:

Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected Strand	getExclusiveOwnerStrand() Returns the strand last set by setExclusiveOwnerStrand, or null if never set.
protected void	setExclusiveOwnerStrand(Strand strand) Sets the strand that currently owns exclusive access.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractOwnableSynchronizer

protected AbstractOwnableSynchronizer()

Empty constructor for use by subclasses.

Method Detail

setExclusiveOwnerStrand

protected final void setExclusiveOwnerStrand(Strand strand)

Sets the strand that currently owns exclusive access. A null argument indicates that no strand owns access. This method does not otherwise impose any synchronization or volatile field accesses.

Parameters:

strand - the owner strand

getExclusiveOwnerStrand

protected final Strand getExclusiveOwnerStrand()

Returns the strand last set by setExclusiveOwnerStrand, or null if never set. This method does not otherwise impose any synchronization or volatile field accesses.

Returns:

the owner strand