heros.solver

Class CountLatch

java.lang.Object

heros.solver.CountLatch

public class CountLatch
extends java.lang.Object

A synchronization aid similar to CountDownLatch but with the ability to also count up. This is useful to wait until a variable number of tasks have completed. awaitZero() will block until the count reaches zero.

Constructor Summary

Constructors

Constructor and Description
CountLatch(int count)

Method Summary

Modifier and Type	Method and Description
void	awaitZero()
boolean	awaitZero(long timeout, java.util.concurrent.TimeUnit unit)
void	decrement()
void	increment()
boolean	isAtZero() Gets whether this counting latch has arrived at zero
void	resetAndInterrupt() Resets the counter to zero.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CountLatch

public CountLatch(int count)

Method Detail

awaitZero

public void awaitZero()
               throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException

awaitZero

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

Throws:

java.lang.InterruptedException

increment

public void increment()

decrement

public void decrement()

resetAndInterrupt

public void resetAndInterrupt()

Resets the counter to zero. But waiting threads won't be released somehow. So this interrupts the threads so that they escape from their waiting state.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isAtZero

public boolean isAtZero()

Gets whether this counting latch has arrived at zero

Returns:

True if this counting latch has arrived at zero, otherwise false