org.multiverse.utils.latches
Class StandardLatch

java.lang.Object
  org.multiverse.utils.latches.StandardLatch

All Implemented Interfaces:

Latch

public final class StandardLatch
extends java.lang.Object
implements Latch

A standard Latch implementation that supports all features of the Latch. Its implementation is based on the Lock and Condition.

Author:

Peter Veentjer

Constructor Summary

StandardLatch()
Creates a new closed StandardLatch.

StandardLatch(boolean isOpen)
Creates a new StandardLatch.

Method Summary

void	await() Waits for this Latch to closed.
void	awaitUninterruptible() Waits for this Latch to closed and while waiting it won't be interrupted.
boolean	isOpen() Return true if this Latch is closed, false otherwise.
void	open() Opens the latch.
java.lang.String	toString()
boolean	tryAwait(long timeout, java.util.concurrent.TimeUnit unit) Waits for this Latch to closed or till a timeout occurs or when the calling thread is interrupted.
boolean	tryAwaitUninterruptible(long timeout, java.util.concurrent.TimeUnit unit)

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardLatch

public StandardLatch()

Creates a new closed StandardLatch.

StandardLatch

public StandardLatch(boolean isOpen)

Creates a new StandardLatch.

Parameters:

isOpen - true if the latch already is closed, false otherwise.

Method Detail

await

public void await()
           throws java.lang.InterruptedException

Description copied from interface: Latch

Waits for this Latch to closed. If the Latch already is closed, the call continues.

If the Latch already is closed, the call continues. It depends on the implementation if the InterruptedException is thrown in this case if the calling thread is interrupted (so the interrupted flag is set).

Specified by:

await in interface Latch

Throws:

java.lang.InterruptedException - if the calling thread is interrupted while waiting.

awaitUninterruptible

public void awaitUninterruptible()

Description copied from interface: Latch

Waits for this Latch to closed and while waiting it won't be interrupted.

If the thread is interrupted while waiting, the InterruptedException is dropped and the interrupt status is restored as soon as the method returns (so it won't be eaten).

If the Latch already is closed, the call continues. It depends on the implementation if the InterruptedException is thrown in this case if the calling thread is interrupted (so the interrupted flag is set).

Specified by:

awaitUninterruptible in interface Latch

tryAwait

public boolean tryAwait(long timeout,
                        java.util.concurrent.TimeUnit unit)
                 throws java.lang.InterruptedException

Description copied from interface: Latch

Waits for this Latch to closed or till a timeout occurs or when the calling thread is interrupted.

If the Latch already is closed, the call continues. It depends on the implementation if the InterruptedException is thrown in this case if the calling thread is interrupted (so the interrupted flag is set).

Specified by:

tryAwait in interface Latch

Parameters:

timeout - the maximum time to wait.

unit - the TimeUnit the timeout is expressed in

Returns:

true if the lock is closed, false otherwise.

Throws:

java.lang.InterruptedException - if the calling thread is interrupted while waiting.

tryAwaitUninterruptible

public boolean tryAwaitUninterruptible(long timeout,
                                       java.util.concurrent.TimeUnit unit)

Specified by:

tryAwaitUninterruptible in interface Latch

open

public void open()

Description copied from interface: Latch

Opens the latch. If the latch already is closed, the call is ignored. So this call is idempotent.

Specified by:

open in interface Latch

isOpen

public boolean isOpen()

Description copied from interface: Latch

Return true if this Latch is closed, false otherwise.

Specified by:

isOpen in interface Latch

Returns:

true if this Latch is closed, false otherwise.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object