SignalHandler.java

/*
* Claudia Project
* http://claudia.morfeo-project.org
*
* (C) Copyright 2010 Telefonica Investigacion y Desarrollo
* S.A.Unipersonal (Telefonica I+D)
*
* See CREDITS file for info about members and contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Affero GNU General Public License (AGPL) as 
* published by the Free Software Foundation; either version 3 of the License, 
* or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the Affero GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* If you want to use this software an plan to distribute a
* proprietary application in any way, and you are not licensing and
* distributing your source code under AGPL, you probably need to
* purchase a commercial license of the product. Please contact
* claudia-support@lists.morfeo-project.org for more information.
*/
package com.telefonica.claudia.slm.common;

import java.util.Observable;

import org.apache.log4j.Logger;

import sun.misc.Signal;

public class SignalHandler extends Observable implements sun.misc.SignalHandler {

	private static Logger logger = Logger.getLogger(SignalHandler.class);
	
	public void handleSignal(String name) {
		try {
		sun.misc.Signal.handle( new sun.misc.Signal(name), this );
		} catch (IllegalArgumentException iae) {
			
			iae.printStackTrace();
			logger.warn("Signal not supported or java signal handling not supported by the JavaVM. Shutdown should be forced. Data loses may occur.");
			
		} catch (Throwable t) {
			logger.warn("Unexpected error registering signal handling. Current JavaVM version may not support signal handling.");
		}
	}
	
	public void handle(Signal signal) {
		setChanged();
		notifyObservers(signal);
	}

}