/*
* Copyright (c) 2001 by Matt Welsh and The Regents of the University of
* California. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Author: Matt Welsh <mdw@cs.berkeley.edu>
*
*/
package seda.sandStorm.api;
/**
* This class defines an interface for delivery of systemwide 'signals',
* informational events that stages may wish to use for initialization
* or control.
*
* @see SignalIF
* @author Matt Welsh
*/
public interface SignalMgrIF {
/**
* Register for the given signal type. When the signal is triggered,
* an object of the given type (although not necessarily the same
* object instance) will be delivered to the given SinkIF.
*/
public void register(SignalIF signalType, SinkIF sink);
/**
* Deregister for the given signal type.
*/
public void deregister(SignalIF signalType, SinkIF sink);
}
|