org.jredis.ri.alphazero.support

Class Signal

java.lang.Object

org.jredis.ri.alphazero.support.Signal

public class Signal
extends java.lang.Object

Non-reusable (disposable) signal class.

Since:

alpha.0

Version:

alpha.0, Oct 15, 2009

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	isSignalled Signal state
(package private) java.util.concurrent.locks.Lock	lock underlying lock used for implementation
(package private) java.util.concurrent.locks.Condition	signalled condition based on lock

Constructor Summary

Constructors

Constructor and Description
Signal()

Method Summary

Modifier and Type	Method and Description
void	await() Blocking call awaits the signal.
boolean	await(long time, java.util.concurrent.TimeUnit unit) Blocking call awaits the signal for the specified duration.
boolean	isSignalled() Non-blocking call immediately returns with the current status of the signal.
void	signal() Signals.

Methods inherited from class java.lang.Object

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

Field Detail

lock

final java.util.concurrent.locks.Lock lock

underlying lock used for implementation

signalled

final java.util.concurrent.locks.Condition signalled

condition based on lock

isSignalled

boolean isSignalled

Signal state

Constructor Detail

Signal

public Signal()

Method Detail

await

public boolean await(long time,
                     java.util.concurrent.TimeUnit unit)
              throws java.lang.InterruptedException

Blocking call awaits the signal for the specified duration. Multiple threads may call this method to wait signal. Ordering is not maintained.

Parameters:

time - duration in time units

unit - time unit

Returns:

true if timedout.

Throws:

java.lang.InterruptedException

See Also:

signal()

await

public void await()
           throws java.lang.InterruptedException

Blocking call awaits the signal. Multiple threads may call this method to wait signal. Ordering is not maintained.

Throws:

java.lang.InterruptedException - if interrupted while waiting

See Also:

signal()

signal

public void signal()

Signals. All waiters are signaled.

isSignalled

public boolean isSignalled()

Non-blocking call immediately returns with the current status of the signal.

Returns:

true if signaled.