com.sun.tv.media.util

Class ThreadedEventQueue

java.lang.Object

java.lang.Thread

com.sun.tv.media.util.MediaThread

com.sun.tv.media.util.ThreadedEventQueue

All Implemented Interfaces:

Runnable

public abstract class ThreadedEventQueue
extends MediaThread

This class is a part of the porting layer implementation for JavaTV. A utility class to manage an event queue in a thread. To use it, subclass from it and implement the processEvent() method.

Version:

1.7, 98/03/28

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class com.sun.tv.media.util.MediaThread

mediaThreadGroup

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ThreadedEventQueue()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	dispatchEvents() Wait until there is something in the event queue to process.
void	kill() kill the thread.
void	postEvent(ControllerEvent evt) Queue the given event in the event queue.
protected abstract void	processEvent(ControllerEvent evt) Invoked when there is at least one event in the queue.
void	run() An inifinite while loop to dispatch ControllerEvent.

Methods inherited from class com.sun.tv.media.util.MediaThread

getMediaThreadGroup, useAudioPriority, useControlPriority, useNetworkPriority, useVideoPriority

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadedEventQueue

public ThreadedEventQueue()

Method Detail

processEvent

protected abstract void processEvent(ControllerEvent evt)

Invoked when there is at least one event in the queue. Implement this as a callback to process one event.

dispatchEvents

protected void dispatchEvents()

Wait until there is something in the event queue to process. Then dispatch the event to the listeners.The entire method does not need to be synchronized since this includes taking the event out from the queue and processing the event. We only need to provide exclusive access over the code where an event is removed from the queue.

postEvent

public void postEvent(ControllerEvent evt)

Queue the given event in the event queue.

kill

public void kill()

kill the thread.

run

public void run()

An inifinite while loop to dispatch ControllerEvent.

Specified by:

run in interface Runnable

Overrides:

run in class Thread