groovyx.gpars.util

Class EnhancedRWLock

java.lang.Object

java.util.concurrent.locks.ReentrantReadWriteLock

groovyx.gpars.util.EnhancedRWLock

All Implemented Interfaces:

java.io.Serializable, java.util.concurrent.locks.ReadWriteLock

public class EnhancedRWLock
extends java.util.concurrent.locks.ReentrantReadWriteLock

Extends ReentrantReadWriteLock with handy withReadLock(Closure) and withWriteLock(Closure) methods to safely lock and unlock the lock for the passed-in closure. Use: def extendedLock = new ExtendedRWLock() extendedLock.withReadLock() {* //read lock locked here }*

Author:

Vaclav Pech Date: Feb 18, 2009

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.locks.ReentrantReadWriteLock

java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock, java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock

Field Summary

Fields

Modifier and Type	Field and Description
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
EnhancedRWLock()
EnhancedRWLock(boolean fair)

Method Summary

Methods

Modifier and Type	Method and Description
void	withReadLock(groovy.lang.Closure cl) Performs the passed-in closure with the read lock locked and unlocks the read lock automatically after the closure finishes.
void	withWriteLock(groovy.lang.Closure cl) Performs the passed-in closure with the write lock locked and unlocks the write lock automatically after the closure finishes.

Methods inherited from class java.util.concurrent.locks.ReentrantReadWriteLock

getOwner, getQueuedReaderThreads, getQueuedThreads, getQueuedWriterThreads, getQueueLength, getReadHoldCount, getReadLockCount, getWaitingThreads, getWaitQueueLength, getWriteHoldCount, hasQueuedThread, hasQueuedThreads, hasWaiters, isFair, isWriteLocked, isWriteLockedByCurrentThread, readLock, toString, writeLock

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

EnhancedRWLock

public EnhancedRWLock()

EnhancedRWLock

public EnhancedRWLock(boolean fair)

Method Detail

withReadLock

public void withReadLock(groovy.lang.Closure cl)

Performs the passed-in closure with the read lock locked and unlocks the read lock automatically after the closure finishes.

Parameters:

cl - The closure to perform with the read lock held

withWriteLock

public void withWriteLock(groovy.lang.Closure cl)

Performs the passed-in closure with the write lock locked and unlocks the write lock automatically after the closure finishes.

Parameters:

cl - The closure to perform with the write lock held