org.apache.geronimo.lock
Class ConcurrentInstanceLock

java.lang.Object
  org.apache.geronimo.lock.ConcurrentInstanceLock

All Implemented Interfaces:

InstanceLock

public class ConcurrentInstanceLock

extends Object

implements InstanceLock

Implementation based on the use of the util.concurrent package from Doug Lea.

Version:

$Revision: 1.5 $ $Date: 2004/03/10 09:58:43 $

Constructor Summary

ConcurrentInstanceLock()

Method Summary

void	exclusiveLock(Object context) Provide context with exclusive access to this resource.
int	getSharedCount()
void	release(Object context) Notification from context that it no longer requires access to this resource
void	sharedLock(Object context) Provide context with shared access to this resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentInstanceLock

public ConcurrentInstanceLock()

Method Detail

sharedLock

public void sharedLock(Object context)
                throws InterruptedException

Description copied from interface: InstanceLock

Provide context with shared access to this resource.

Specified by:

sharedLock in interface InstanceLock

Parameters:

context - the context requesting access

Throws:

InterruptedException - if the thread is interrupted before receiving the lock

exclusiveLock

public void exclusiveLock(Object context)
                   throws InterruptedException

Description copied from interface: InstanceLock

Provide context with exclusive access to this resource.

Specified by:

exclusiveLock in interface InstanceLock

Parameters:

context - the context requesting access

Throws:

InterruptedException - if the thread is interrupted before receiving the lock

release

public void release(Object context)

Description copied from interface: InstanceLock

Notification from context that it no longer requires access to this resource

Specified by:

release in interface InstanceLock

Parameters:

context - the context relinguishing access

getSharedCount

public int getSharedCount()