org.apache.commons.pool.impl
Class FairnessSemaphore

java.lang.Object
  org.apache.commons.pool.impl.FairnessSemaphore

public class FairnessSemaphore
extends java.lang.Object

Semaphore with fairness feature.

Author:

Takayuki Kaneko

Constructor Summary

FairnessSemaphore(int size)
constructor.

Method Summary

void	acquire() acquire semaphore with unlimited timeout.
void	acquire(long waitTime) acquire semaphore with timeout
void	release() release semaphore
void	setSize(int size) set semaphore size

Methods inherited from class java.lang.Object

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

Constructor Detail

FairnessSemaphore

public FairnessSemaphore(int size)

constructor.

Parameters:

size - semaphore size, that assures maximum concurrent thread number

Method Detail

acquire

public void acquire()
             throws java.lang.InterruptedException

acquire semaphore with unlimited timeout.

Throws:

java.lang.InterruptedException

acquire

public void acquire(long waitTime)
             throws java.lang.InterruptedException

acquire semaphore with timeout

Parameters:

waitTime - maximum waiting time before getting semaphore

Throws:

java.lang.InterruptedException

release

public void release()

release semaphore

setSize

public void setSize(int size)

set semaphore size

Parameters:

size - semaphore size