org.norther.tammi.acorn.util.concurrent
Class TimeLimitedLock

java.lang.Object
  org.norther.tammi.acorn.util.concurrent.TimeLimitedLock

All Implemented Interfaces:

Serializable, Lock

public class TimeLimitedLock
extends Object
implements Lock, Serializable

An adaptor class that lets any one thread to get a lock for a predetermined time only. After the time has elapsed, the lock will be released and the next waiting thread will get it. The lock and unlock must be made by the same thread.

Version:

$Id: TimeLimitedLock.java,v 1.7 2009/09/28 15:08:49 cvsimp Exp $

Author:

Ilkka Priha

See Also:

Serialized Form

Constructor Summary

TimeLimitedLock(Lock l, long t, TimeUnit unit)
Constructs a new lock adapter.

Method Summary

void	lock()
void	lockInterruptibly()
Condition	newCondition()
boolean	tryLock()
boolean	tryLock(long t, TimeUnit unit)
void	unlock()

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeLimitedLock

public TimeLimitedLock(Lock l,
                       long t,
                       TimeUnit unit)

Constructs a new lock adapter.

Parameters:

l - the underlying lock.

t - the timeout for locks.

unit - the unit of the timeout.

Method Detail

lock

public void lock()

Specified by:

lock in interface Lock

lockInterruptibly

public void lockInterruptibly()
                       throws InterruptedException

Specified by:

lockInterruptibly in interface Lock

Throws:

InterruptedException

tryLock

public boolean tryLock()

Specified by:

tryLock in interface Lock

tryLock

public boolean tryLock(long t,
                       TimeUnit unit)
                throws InterruptedException

Specified by:

tryLock in interface Lock

Throws:

InterruptedException

unlock

public void unlock()

Specified by:

unlock in interface Lock

newCondition

public Condition newCondition()

Specified by:

newCondition in interface Lock