org/objectweb/proactive/calcium/monitor/SimpleLogMonitor.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version.
 *  
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.calcium.monitor;

import org.objectweb.proactive.calcium.Calcium;
import org.objectweb.proactive.calcium.statistics.StatsGlobal;


public class SimpleLogMonitor implements Monitor {
        Calcium calcium;
    int frequency;
    boolean stoped;
    MonitoringThread thread;

    public SimpleLogMonitor(Calcium calcium, int frequency) {
        this.calcium = calcium;
        this.frequency = frequency;
        this.stoped = true;
        thread=null;
    }

    public synchronized void stop() {
        stoped = true;
        thread.interrupt();
        thread = null;
    }

    public synchronized void start() {
        if(thread!=null) return;
        stoped = false;
        thread= new MonitoringThread();
        thread.start();

    }

    public synchronized boolean isStoped() {
        return stoped;
    }
    
    class MonitoringThread extends Thread{
        
        public void run() {
            while (!isStoped()) {
                try {
                    Thread.sleep(frequency * 1000);
                } catch (InterruptedException e) {
                    //e.printStackTrace();
                    return;
                }

                StatsGlobal stats = calcium.getStatsGlobal();
                System.out.println(stats);
            }
        }
    }
}

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