Package org.elasticsearch.common.util.concurrent

Class CountDown

java.lang.Object

org.elasticsearch.common.util.concurrent.CountDown

public final class CountDown
extends java.lang.Object

A simple thread safe count-down class that in contrast to a CountDownLatch never blocks. This class is useful if a certain action has to wait for N concurrent tasks to return or a timeout to occur in order to proceed.

Constructor Summary

Constructors

Constructor	Description
CountDown(int count)

Method Summary

Modifier and Type	Method	Description
boolean	countDown()	Decrements the count-down and returns true iff this call reached zero otherwise false
boolean	fastForward()	Fast forwards the count-down to zero and returns true iff the count down reached zero with this fast forward call otherwise false
boolean	isCountedDown()	Returns true iff the count-down has reached zero.

Methods inherited from class java.lang.Object

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

Constructor Detail

CountDown

public CountDown(int count)

Method Detail

countDown

public boolean countDown()

Decrements the count-down and returns true iff this call reached zero otherwise false

fastForward

public boolean fastForward()

Fast forwards the count-down to zero and returns true iff the count down reached zero with this fast forward call otherwise false

isCountedDown

public boolean isCountedDown()

Returns true iff the count-down has reached zero. Otherwise false