org/objectweb/proactive/calcium/proactive/ProActiveThreadedManager.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.proactive;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.objectweb.proactive.ProActive;
import org.objectweb.proactive.calcium.Interpreter;
import org.objectweb.proactive.calcium.Skernel;
import org.objectweb.proactive.calcium.Task;
import org.objectweb.proactive.core.descriptor.data.VirtualNode;
import org.objectweb.proactive.core.node.Node;

public class ProActiveThreadedManager extends AbstractProActiveManager {

        ExecutorService threadPool;

        public ProActiveThreadedManager(Node nodes[]){          
                super(nodes);
        }
        
        public ProActiveThreadedManager(VirtualNode vn){
                super(vn);
        }
        
        public ProActiveThreadedManager(String descriptorPath, String virtualNodeName){
                super(descriptorPath,virtualNodeName);
        }

        @Override
        public Skernel boot(Skernel skernel) {
                logger.info("ProActive skeleton manager is using "+nodes.length+" nodes");
                threadPool=Executors.newCachedThreadPool();
                try {
                        for(int i=0;i<nodes.length;i++){
                                Interpreter interp=(Interpreter)ProActive.newActive(Interpreter.class.getName(),null,nodes[i]);
                                threadPool.submit(new ProActiveCallableInterpreter(skernel,interp));
                        }
                } catch (Exception e) {
                        logger.error("Error, unable to create interpreter active objects");
                        e.printStackTrace();
                }
                return skernel;
        }
        
        @Override
        public void shutdown() {
                super.shutdown();
                if(threadPool != null){
                        threadPool.shutdownNow();
                }
        }
        
        protected class ProActiveCallableInterpreter implements Callable<Task<?>>{
                        
                Interpreter interp;
                Skernel skernel;
                
                public ProActiveCallableInterpreter(Skernel skernel, Interpreter interp){
                        this.skernel=skernel;
                        this.interp=interp;
                }

                public Task<?> call() throws Exception {
                        
                        Task<?> task = skernel.getReadyTask(0);
                        
                        while(task!=null){
                                task = interp.interpret(task);
                                
                                ProActive.waitFor(task); //Wait for the future

                                skernel.putTask(task);

                                task = skernel.getReadyTask(0);
                        }

                        return task;
                }
        }
}

---