Package org.jgroups.util

Class CondVar

java.lang.Object

org.jgroups.util.CondVar

public class CondVar
extends Object

A condition variable with methods for (timed) waiting and signalling

Since:

3.6

Field Summary

Fields

Modifier and Type	Field	Description
protected final Condition	cond
protected final Lock	lock

Constructor Summary

Constructors

Constructor	Description
CondVar()
CondVar(Lock lock)

Method Summary

Modifier and Type	Method	Description
void	signal(boolean signal_all)	Wakes up one (signal_all=false) or all (signal_all=true) blocked threads.
void	waitFor(BooleanSupplier condition)	Blocks until condition is true.
boolean	waitFor(BooleanSupplier condition, long timeout, TimeUnit unit)	Blocks until condition is true or the time elapsed

Methods inherited from class java.lang.Object

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

Field Details

lock

protected final Lock lock

cond

protected final Condition cond

Constructor Details

CondVar

public CondVar()

CondVar

public CondVar(Lock lock)

Method Details

waitFor

public void waitFor(BooleanSupplier condition)

Blocks until condition is true.

Parameters:

condition - The condition. Must be non-null

waitFor

public boolean waitFor(BooleanSupplier condition,
 long timeout,
 TimeUnit unit)

Blocks until condition is true or the time elapsed

Parameters:

condition - The condition

timeout - The timeout to wait. A value <= 0 causes immediate return

unit - TimeUnit

Returns:

The condition's status

signal

public void signal(boolean signal_all)

Wakes up one (signal_all=false) or all (signal_all=true) blocked threads. Usually called when the condition changed to true.

Parameters:

signal_all -