org.compass.core.util.backport.java.util.concurrent
Class SynchronousQueue.LifoWaitQueue

java.lang.Object
  org.compass.core.util.backport.java.util.concurrent.SynchronousQueue.WaitQueue
      org.compass.core.util.backport.java.util.concurrent.SynchronousQueue.LifoWaitQueue

All Implemented Interfaces:

Serializable

Enclosing class:

SynchronousQueue

static final class SynchronousQueue.LifoWaitQueue
extends SynchronousQueue.WaitQueue
implements Serializable

LIFO queue to hold waiting puts/takes.

Constructor Summary

SynchronousQueue.LifoWaitQueue()

Method Summary

(package private) SynchronousQueue.Node	deq() Removes and returns node, or null if empty.
(package private) SynchronousQueue.Node	enq(Object x) Creates, adds, and returns node for x.
(package private) boolean	shouldUnlink(SynchronousQueue.Node node) Returns true if a cancelled node might be on queue.
(package private) void	unlink(SynchronousQueue.Node node) Removes a cancelled node to avoid garbage retention.

Methods inherited from class java.lang.Object

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

Constructor Detail

SynchronousQueue.LifoWaitQueue

SynchronousQueue.LifoWaitQueue()

Method Detail

enq

SynchronousQueue.Node enq(Object x)

Description copied from class: SynchronousQueue.WaitQueue

Creates, adds, and returns node for x.

Specified by:

enq in class SynchronousQueue.WaitQueue

deq

SynchronousQueue.Node deq()

Description copied from class: SynchronousQueue.WaitQueue

Removes and returns node, or null if empty.

Specified by:

deq in class SynchronousQueue.WaitQueue

shouldUnlink

boolean shouldUnlink(SynchronousQueue.Node node)

Description copied from class: SynchronousQueue.WaitQueue

Returns true if a cancelled node might be on queue.

Specified by:

shouldUnlink in class SynchronousQueue.WaitQueue

unlink

void unlink(SynchronousQueue.Node node)

Description copied from class: SynchronousQueue.WaitQueue

Removes a cancelled node to avoid garbage retention.

Specified by:

unlink in class SynchronousQueue.WaitQueue