org/objectweb/proactive/benchmarks/timit/util/MigratableCounter.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.benchmarks.timit.util;

public class MigratableCounter extends TimerCounter {

    private static final long serialVersionUID = 2195039327751012564L;

    private TimItReductor netclock;

    private long elapsed, latency;

    public MigratableCounter(String s) {
        super(s);
    }

    public boolean isMigratable() {
        return true;
    }

    public void setClock(TimItReductor tr) {
        this.netclock = tr;
    }

    public void start() {
        this.latency = System.currentTimeMillis();
        this.elapsed = this.netclock.getCurrentTimeMillis(); // ask time to
                                                                // network clock
        this.latency = System.currentTimeMillis() - this.latency;
        this.elapsed -= this.latency / 2; // adjust and consider an symetrical
                                            // connection
    }

    public void stop() {
        this.latency = System.currentTimeMillis();
        this.elapsed = this.netclock.getCurrentTimeMillis() - this.elapsed;
        this.latency = System.currentTimeMillis() - this.latency;
        this.elapsed -= this.latency / 2; // adjust and consider an symetrical
                                            // connection

        super.setValue((int) this.elapsed);
    }
}

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