org.elasticsearch.common.util.concurrent

Class KeyedLock<T>

java.lang.Object

org.elasticsearch.common.util.concurrent.KeyedLock<T>

public class KeyedLock<T>
extends java.lang.Object

This class manages locks. Locks can be accessed with an identifier and are created the first time they are acquired and removed if no thread hold the lock. The latter is important to assure that the list of locks does not grow infinitely.

Constructor Summary

Constructors

Constructor and Description
KeyedLock()
KeyedLock(boolean fair)

Method Summary

Modifier and Type	Method and Description
Releasable	acquire(T key)
boolean	hasLockedKeys()
boolean	isHeldByCurrentThread(T key)

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyedLock

public KeyedLock(boolean fair)

Parameters:

fair - Use fair locking, ie threads get the lock in the order they requested it

KeyedLock

public KeyedLock()

Method Detail

acquire

public Releasable acquire(T key)

isHeldByCurrentThread

public boolean isHeldByCurrentThread(T key)

hasLockedKeys

public boolean hasLockedKeys()