pt.ua.concurrent

Class ExternalBarrier

java.lang.Object

pt.ua.concurrent.CObject

pt.ua.concurrent.Barrier

pt.ua.concurrent.ExternalBarrier

All Implemented Interfaces:

InterruptibleAwaitingThreads, SyncCV

Direct Known Subclasses:

TriggeredBarrier

public abstract class ExternalBarrier
extends Barrier

An externally triggered thread barrier abstract class.
In this type of barrier, the barrier is released by an externally usable (public) method (release).

This class follows DbC(tm) methodology (Wikipedia). Where possible, contracts are implement with native's Java assert.

Version:

0.5, December 2015

Author:

Miguel Oliveira e Silva (mos@ua.pt)

Constructor Summary

Constructors

Constructor and Description
ExternalBarrier() Constructs a new external barrier registering waiting threads.
ExternalBarrier(boolean registerAwaitingThreads) Constructs a new external barrier.

Method Summary

Modifier and Type	Method and Description
abstract void	release() Release barrier (regardless of the number of waiting threads).

Methods inherited from class pt.ua.concurrent.Barrier

await, awaitCount, count, numberWaitingThreads

Methods inherited from class pt.ua.concurrent.CObject

await, await, broadcast, interruptWaitingThreads, lockIsMine, registerAwaitingThreads, signal, syncronizedLockIsMine

Methods inherited from class java.lang.Object

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

Constructor Detail

ExternalBarrier

public ExternalBarrier()

Constructs a new external barrier registering waiting threads.

ExternalBarrier

public ExternalBarrier(boolean registerAwaitingThreads)

Constructs a new external barrier.

Parameters:

registerAwaitingThreads - if true, threads are registered when waiting

Method Detail

release

public abstract void release()

Release barrier (regardless of the number of waiting threads).

Postcondition:

count() == old(count())+ 1