package net.sourceforge.gjtapi.util;
/*
Copyright (c) 2002 8x8 Inc. (www.8x8.com)
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, and/or sell copies of the Software, and to permit persons
to whom the Software is furnished to do so, provided that the above
copyright notice(s) and this permission notice appear in all copies of
the Software and that both the above copyright notice(s) and this
permission notice appear in supporting documentation.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Except as contained in this notice, the name of a copyright holder
shall not be used in advertising or otherwise to promote the sale, use
or other dealings in this Software without prior written authorization
of the copyright holder.
*/
/**
* This is like an OrderedEventManger except that the events are assumed to be instances of
* EventHandler themselves. Instead of having an EventHandler process each event, each event is
* asked to process an object. In other words the held object is the visitor to the event, not
* visa-versa.
* Creation date: (2000-02-25 12:03:34)
* @author: Richard Deadman
*/
public class OrderedBlockManager extends BlockManager {
protected Object visitor;
private java.lang.Runnable dispatcher = new Runnable() { // thread manager
public void run() {
boolean run = true;
while (run) {
EventHandler eh = null;
try {
// wait for an event
eh = (EventHandler)get();
// delegate in order to the handler
eh.process(visitor);
} catch (InterruptedException ie) {
run = false;
} catch (RuntimeException ex) {
if (exHandler != null)
exHandler.handleException(eh, ex, visitor);
else
throw ex;
}
}
}
};
/**
* Instantiate the Block queue manager.
* Creation date: (2000-04-18 0:25:04)
* @author: Richard Deadman
* @param theVisitor The object to be visited by each block
*/
public OrderedBlockManager(Object theVisitor) {
this(theVisitor, "Ordered Block Manager");
}
/**
* Instantiate the Block queue manager.
* Creation date: (2000-04-18 0:25:04)
* @author: Richard Deadman
* @param theVisitor The object to be visited by each block
* @param name The name of the managing thread.
*/
public OrderedBlockManager(Object theVisitor, String name) {
this(theVisitor, name, new NullExceptionHandler());
}
/**
* Instantiate the Block queue manager.
* Creation date: (2000-04-18 0:25:04)
* @author: Richard Deadman
* @param theVisitor The object to be visited by each block
* @param name The name of the managing thread.
*/
public OrderedBlockManager(Object theVisitor, String name, ExceptionHandler exh) {
super(exh);
// store the event visitor
this.visitor = theVisitor;
// now start the manager thread running
Thread t = new Thread(this.dispatcher, name);
t.setDaemon(true); // allows JVM to die while I'm alive
t.start();
}
}