org/objectweb/proactive/core/group/spmd/MethodBarrier.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.core.group.spmd;

import java.io.Serializable;


public class MethodBarrier implements Serializable {
    private String[] methodNames;
    private boolean[] arrivedMethods;

    public MethodBarrier(String[] methodNames) {
        this.methodNames = methodNames;
        this.arrivedMethods = new boolean[this.methodNames.length];
        for (int i = 0; i < this.arrivedMethods.length; i++) {
            this.arrivedMethods[i] = false;
        }
    }

    public boolean barrierOver() {
        boolean result = true;
        for (int i = 0; ((i < this.arrivedMethods.length) && (result)); i++) {
            result &= this.arrivedMethods[i];
        }
        return result;
    }

    public boolean checkMethod(String methodName) {
        int index = this.indexOf(methodName);
        if ((index < 0) || this.arrivedMethods[index]) {
            return false;
        } else {
            this.arrivedMethods[index] = true;
            return true;
        }
    }

    private int indexOf(String methodName) {
        boolean find = false;
        int i;
        for (i = 0; ((i < this.methodNames.length) && (!find)); i++) {
            find = this.methodNames[i].equals(methodName) &&
                !this.arrivedMethods[i];
        }
        if (find) {
            return i - 1;
        } else {
            return -1;
        }
    }
}

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