org.apache.commons.transaction.locking.locks
Class ResourceRWLock

java.lang.Object
  org.apache.commons.transaction.locking.locks.ResourceRWLock

All Implemented Interfaces:

ReadWriteLock

public class ResourceRWLock
extends Object
implements ReadWriteLock

Special version of a ReentrantReadWriteLock.

• each thread can hold at most one lock level, i.e. either none, read, or write.
• ownership is (also partially) transferable from one thread to another (not in this initial implementation)
• upgrade from read-lock to write-lock is supported
• information which thread holds which locks is available

Nested Class Summary

class

ResourceRWLock.InnerLock

Constructor Summary

ResourceRWLock()

ResourceRWLock(String resourceName)

Method Summary

boolean	equals(Object obj)
Collection<Thread>	getQueuedThreads()
boolean	isUnacquired()
org.apache.commons.transaction.locking.locks.ResourceRWLock.ReadLock	readLock()
void	registerWaiter()
String	toString()
void	unregisterWaiter()
org.apache.commons.transaction.locking.locks.ResourceRWLock.WriteLock	writeLock()

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceRWLock

public ResourceRWLock()

ResourceRWLock

public ResourceRWLock(String resourceName)

Method Detail

writeLock

public org.apache.commons.transaction.locking.locks.ResourceRWLock.WriteLock writeLock()

Specified by:

writeLock in interface ReadWriteLock

readLock

public org.apache.commons.transaction.locking.locks.ResourceRWLock.ReadLock readLock()

Specified by:

readLock in interface ReadWriteLock

getQueuedThreads

public Collection<Thread> getQueuedThreads()

registerWaiter

public void registerWaiter()

unregisterWaiter

public void unregisterWaiter()

isUnacquired

public boolean isUnacquired()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object