/* ClassLoaderReferenceCommandSet.java -- class to implement the ClassLoaderReference Command Set Copyright (C) 2005 Free Software Foundation This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ package gnu.classpath.jdwp.processor; import gnu.classpath.jdwp.IVirtualMachine; import gnu.classpath.jdwp.Jdwp; import gnu.classpath.jdwp.JdwpConstants; import gnu.classpath.jdwp.exception.JdwpException; import gnu.classpath.jdwp.exception.JdwpInternalErrorException; import gnu.classpath.jdwp.exception.NotImplementedException; import gnu.classpath.jdwp.id.IdManager; import gnu.classpath.jdwp.id.ObjectId; import gnu.classpath.jdwp.id.ReferenceTypeId; import java.io.DataOutputStream; import java.io.IOException; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.Iterator; /** * A class representing the ClassLoaderReference Command Set. * * @author Aaron Luchko */ public class ClassLoaderReferenceCommandSet implements CommandSet { // Our hook into the jvm private final IVirtualMachine vm = Jdwp.getIVirtualMachine(); // Manages all the different ids that are assigned by jdwp private final IdManager idMan = Jdwp.getIdManager(); public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command) throws JdwpException { // Although there's only a single command to choose from we still use // a switch to maintain consistency with the rest of the CommandSets try { switch (command) { case JdwpConstants.CommandSet.ClassLoaderReference.VISIBLE_CLASSES: executeVisibleClasses(bb, os); break; default: throw new NotImplementedException("Command " + command + " not found in ClassLoaderReference Command Set."); } } catch (IOException ex) { // The DataOutputStream we're using isn't talking to a socket at all // So if we throw an IOException we're in serious trouble throw new JdwpInternalErrorException(ex); } return true; } public void executeVisibleClasses(ByteBuffer bb, DataOutputStream os) throws JdwpException, IOException { ObjectId oId = idMan.readId(bb); ClassLoader cl = (ClassLoader) oId.getObject(); ArrayList loadRequests = vm.getLoadRequests(cl); os.writeInt(loadRequests.size()); for (Iterator iter = loadRequests.iterator(); iter.hasNext();) { Class clazz = (Class)iter.next(); ReferenceTypeId refId = idMan.getReferenceTypeId(clazz); refId.writeTagged(os); } } }