/* * %W% %E% * * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER *  * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 only, as published by the Free Software Foundation.  *  * 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 version 2 for more details (a copy is * included at /legal/license.txt).  *  * You should have received a copy of the GNU General Public License * version 2 along with this work; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA  *  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 or visit www.sun.com if you need additional * information or have any questions.  */package com.sun.jump.isolate.jvmprocess;import com.sun.jump.common.JUMPAppModel;import com.sun.jump.common.JUMPProcess;import com.sun.jump.common.JUMPIsolate;import com.sun.jump.common.JUMPProcessProxy;import com.sun.jump.message.JUMPMessagingService;import java.util.Map;import java.rmi.Remote;/** * <code>JVMIsolateVM</code> encapsulates an isolate that is implemented * using a single JVM Process. There is only a single instance of this * class, so all the methods are static. This class also hosts all the  * common infrastucture services (like messaging, locking etc) for both * the system libraries as well as the application running within the * container. */public abstract class JUMPIsolateProcess    implements JUMPProcess, JUMPIsolate, JUMPMessagingService {        private static JUMPIsolateProcess INSTANCE = null;        public synchronized static JUMPIsolateProcess getInstance() {        return INSTANCE;    }        /** Creates a new instance of JUMPIsolateProcess */    protected JUMPIsolateProcess() {        synchronized (JUMPIsolateProcess.class){            if ( INSTANCE == null ) {                INSTANCE = this;            }        }    }        /**     * Returns a module's remote object.  The isolate can access     * JUMP modules in the executive through the remote object.     *     * <p>     * This method should be used to access implementation interfaces only.     * </p>     *     * @param name name of service to retrieve     * @return remote object which implements the remoteInterface.     */    public abstract Remote getRemoteService(String name);    /**     * Returns the executive process interface so that the Isolate     * can send messages to the executive.     */    public abstract JUMPProcessProxy getExecutiveProcess();    public int getIsolateId() {        return this.getProcessId();    }    /**     * Returns configuration parameters associated with the isolate.     */    public abstract Map getConfig();    /**     * Get app model running in this isolate process     */    public abstract JUMPAppModel getAppModel();    public void initialize(JUMPAppModel appModel) {    }}