Module org.apache.lucene.core

Package org.apache.lucene.index

Class LockableConcurrentApproximatePriorityQueue<T extends Lock>

java.lang.Object

org.apache.lucene.index.LockableConcurrentApproximatePriorityQueue<T>

final class LockableConcurrentApproximatePriorityQueue<T extends Lock>
extends Object

A ConcurrentApproximatePriorityQueue of Lock objects.

Field Summary

Fields

Modifier and Type	Field	Description
private final AtomicInteger	addAndUnlockCounter
private final ConcurrentApproximatePriorityQueue<T>	queue

Constructor Summary

Constructors

Constructor	Description
LockableConcurrentApproximatePriorityQueue()
LockableConcurrentApproximatePriorityQueue(int concurrency)

Method Summary

Modifier and Type	Method	Description
(package private) void	addAndUnlock(T entry, long weight)	Add an entry to the queue and unlock it, in that order.
(package private) boolean	contains(Object o)
(package private) T	lockAndPoll()	Lock an entry, and poll it from the queue, in that order.
(package private) boolean	remove(Object o)	Remove an entry from the queue.

Methods inherited from class java.lang.Object

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

Field Details

queue

private final ConcurrentApproximatePriorityQueue<T extends Lock> queue

addAndUnlockCounter

private final AtomicInteger addAndUnlockCounter

Constructor Details

LockableConcurrentApproximatePriorityQueue

LockableConcurrentApproximatePriorityQueue(int concurrency)

LockableConcurrentApproximatePriorityQueue

LockableConcurrentApproximatePriorityQueue()

Method Details

lockAndPoll

T lockAndPoll()

Lock an entry, and poll it from the queue, in that order. If no entry can be found and locked, null is returned.

remove

boolean remove(Object o)

Remove an entry from the queue.

contains

boolean contains(Object o)

addAndUnlock

void addAndUnlock(T entry,
 long weight)

Add an entry to the queue and unlock it, in that order.