nl.nn.adapterframework.util

Class Guard

java.lang.Object

nl.nn.adapterframework.util.Guard

public class Guard
extends Object

A Guard is the counterpart of the Semaphore that waits till all resources have been released.

Since:

4.9

Author:

Gerrit van Brakel

Constructor Summary

Constructors

Constructor and Description
Guard()
Guard(int numberOfResourcesToWaitFor)

Method Summary

Modifier and Type	Method and Description
void	addResource()
boolean	isReleased()
void	releaseResource() decrements internal counter, possibly awakening the thread waiting for release wait()ing in acquire()
void	waitForAllResources() Wait for the counter to get zero.
void	waitForAllResources(long timeout) Wait for the counter to get zero.

Methods inherited from class java.lang.Object

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

Constructor Detail

Guard

public Guard()

Guard

public Guard(int numberOfResourcesToWaitFor)

Method Detail

waitForAllResources

public void waitForAllResources()
                         throws InterruptedException

Wait for the counter to get zero.

Throws:

InterruptedException - passed from this.wait().

waitForAllResources

public void waitForAllResources(long timeout)
                         throws InterruptedException,
                                TimeoutException

Wait for the counter to get zero.

Throws:

InterruptedException - passed from this.wait().

TimeoutException - if the time specified has passed, but the counter did not reach zero.

addResource

public void addResource()

releaseResource

public void releaseResource()

decrements internal counter, possibly awakening the thread waiting for release wait()ing in acquire()

isReleased

public boolean isReleased()