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org.jgroups.util
Class CondVar  

java.lang.Object
  org.jgroups.util.CondVar

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public class CondVar

extends java.lang.Object

Class that checks on a condition and - if condition doesn't match the expected result - waits until the result matches the expected result, or a timeout occurs. First version used WaitableBoolean from util.concurrent, but that class would not allow for timeouts.

Version:

$Id: CondVar.java,v 1.3 2004/12/31 14:10:40 belaban Exp $

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Field Summary
(package private)  java.lang.Object	cond
(package private)  java.lang.Object	lock
(package private)  java.lang.String	name

 

Constructor Summary

CondVar(java.lang.String name, java.lang.Object cond)

CondVar(java.lang.String name, java.lang.Object cond, java.lang.Object lock)

 

Method Summary
private  void	_waitUntilWithTimeout(java.lang.Object result, long timeout)
(package private)  void	doWait()
(package private)  void	doWait(long timeout)
java.lang.Object	get()
java.lang.Object	getLock()
private  boolean	match(java.lang.Object o1, java.lang.Object o2)
void	set(java.lang.Object result)           Sets the result
java.lang.String	toString()           Convert this Object to a human-readable String.
void	waitUntil(java.lang.Object result)
void	waitUntil(java.lang.Object result, long timeout)           Waits until the condition matches the expected result.
void	waitUntilWithTimeout(java.lang.Object result, long timeout)           Waits until the condition matches the expected result.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

cond

java.lang.Object cond

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name

final java.lang.String name

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lock

final java.lang.Object lock

Constructor Detail

CondVar

public CondVar(java.lang.String name,
               java.lang.Object cond)

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CondVar

public CondVar(java.lang.String name,
               java.lang.Object cond,
               java.lang.Object lock)

Method Detail

get

public java.lang.Object get()

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set

public void set(java.lang.Object result)

Sets the result

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getLock

public java.lang.Object getLock()

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waitUntilWithTimeout

public void waitUntilWithTimeout(java.lang.Object result,
                                 long timeout)
                          throws org.jgroups.TimeoutException

Waits until the condition matches the expected result. Returns immediately if they match, otherwise waits for timeout milliseconds or until the results match.

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waitUntil

public void waitUntil(java.lang.Object result,
                      long timeout)

Waits until the condition matches the expected result. Returns immediately if they match, otherwise waits for timeout milliseconds or until the results match. This method doesn't throw a TimeoutException

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waitUntil

public void waitUntil(java.lang.Object result)

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_waitUntilWithTimeout

private void _waitUntilWithTimeout(java.lang.Object result,
                                   long timeout)
                            throws org.jgroups.TimeoutException

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doWait

void doWait()

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doWait

void doWait(long timeout)

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match

private boolean match(java.lang.Object o1,
                      java.lang.Object o2)

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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