org.lsst.ccs.subsystem.shutter.statemachine

Class SynchronousChannel<T>

java.lang.Object

org.lsst.ccs.subsystem.shutter.statemachine.SynchronousChannel<T>

All Implemented Interfaces:

Channel<T>

public class SynchronousChannel<T>
extends Object
implements Channel<T>

A message channel that is fully synchronous and fair. A writing task will block until another task reads from the channel. A reading task will block until another task writes to the channel. There is no buffering of messages. Tasks awaiting access are awakened in FIFO order (fair).

Author:

tether

Constructor Summary

Constructors

Constructor and Description
SynchronousChannel()

Method Summary

Modifier and Type	Method and Description
T	read() Read a message from a channel, waiting indefinitely for a message to become available.
void	write(T msg) Write a message to the channel, waiting indefinitely for the message to be stored or read.

Methods inherited from class java.lang.Object

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

Constructor Detail

SynchronousChannel

public SynchronousChannel()

Method Detail

write

public void write(T msg)
           throws InterruptedException

Description copied from interface: Channel

Write a message to the channel, waiting indefinitely for the message to be stored or read.

Specified by:

write in interface Channel<T>

Parameters:

msg - The message.

Throws:

InterruptedException

read

public T read()
       throws InterruptedException

Description copied from interface: Channel

Read a message from a channel, waiting indefinitely for a message to become available.

Specified by:

read in interface Channel<T>

Returns:

The message.

Throws:

InterruptedException