| /* ClassTypeCommandSet.java -- class to implement the ClassType |
| 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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.JdwpConstants; |
| import gnu.classpath.jdwp.VMVirtualMachine; |
| import gnu.classpath.jdwp.exception.InvalidFieldException; |
| import gnu.classpath.jdwp.exception.JdwpException; |
| import gnu.classpath.jdwp.exception.JdwpInternalErrorException; |
| import gnu.classpath.jdwp.exception.NotImplementedException; |
| import gnu.classpath.jdwp.id.ObjectId; |
| import gnu.classpath.jdwp.id.ReferenceTypeId; |
| import gnu.classpath.jdwp.util.MethodResult; |
| import gnu.classpath.jdwp.util.Value; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * A class representing the ClassType Command Set. |
| * |
| * @author Aaron Luchko <aluchko@redhat.com> |
| */ |
| public class ClassTypeCommandSet |
| extends CommandSet |
| { |
| public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command) |
| throws JdwpException |
| { |
| try |
| { |
| switch (command) |
| { |
| case JdwpConstants.CommandSet.ClassType.SUPERCLASS: |
| executeSuperclass(bb, os); |
| break; |
| case JdwpConstants.CommandSet.ClassType.SET_VALUES: |
| executeSetValues(bb, os); |
| break; |
| case JdwpConstants.CommandSet.ClassType.INVOKE_METHOD: |
| executeInvokeMethod(bb, os); |
| break; |
| case JdwpConstants.CommandSet.ClassType.NEW_INSTANCE: |
| executeNewInstance(bb, os); |
| break; |
| default: |
| throw new NotImplementedException("Command " + command + |
| " not found in ClassType 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 false; |
| } |
| |
| private void executeSuperclass(ByteBuffer bb, DataOutputStream os) |
| throws JdwpException, IOException |
| { |
| ReferenceTypeId refId = idMan.readReferenceTypeId(bb); |
| Class clazz = refId.getType(); |
| Class superClazz = clazz.getSuperclass(); |
| |
| if (superClazz == null) { |
| os.writeLong(0L); |
| } else { |
| ReferenceTypeId clazzId = idMan.getReferenceTypeId(superClazz); |
| clazzId.write(os); |
| } |
| } |
| |
| private void executeSetValues(ByteBuffer bb, DataOutputStream os) |
| throws JdwpException, IOException |
| { |
| ReferenceTypeId refId = idMan.readReferenceTypeId(bb); |
| |
| // We don't actually seem to need this... |
| Class clazz = refId.getType(); |
| |
| int numValues = bb.getInt(); |
| |
| for (int i = 0; i < numValues; i++) |
| { |
| ObjectId fieldId = idMan.readObjectId(bb); |
| Field field = (Field) (fieldId.getObject()); |
| Object value = Value.getUntaggedObj(bb, field.getType()); |
| try |
| { |
| field.setAccessible(true); // Might be a private field |
| field.set(null, value); |
| } |
| catch (IllegalArgumentException ex) |
| { |
| throw new InvalidFieldException(ex); |
| } |
| catch (IllegalAccessException ex) |
| { // Since we set it as accessible this really shouldn't happen |
| throw new JdwpInternalErrorException(ex); |
| } |
| } |
| } |
| |
| private void executeInvokeMethod(ByteBuffer bb, DataOutputStream os) |
| throws JdwpException, IOException |
| { |
| MethodResult mr = invokeMethod(bb); |
| |
| Object value = mr.getReturnedValue(); |
| Exception exception = mr.getThrownException(); |
| ObjectId eId = idMan.getObjectId(exception); |
| |
| Value.writeTaggedValue(os, value); |
| eId.writeTagged(os); |
| } |
| |
| private void executeNewInstance(ByteBuffer bb, DataOutputStream os) |
| throws JdwpException, IOException |
| { |
| MethodResult mr = invokeMethod(bb); |
| |
| Object obj = mr.getReturnedValue(); |
| ObjectId oId = idMan.getObjectId(obj); |
| Exception exception = mr.getThrownException(); |
| ObjectId eId = idMan.getObjectId(exception); |
| |
| oId.writeTagged(os); |
| eId.writeTagged(os); |
| } |
| |
| /** |
| * Execute the static method and return the resulting MethodResult. |
| */ |
| private MethodResult invokeMethod(ByteBuffer bb) throws JdwpException, |
| IOException |
| { |
| ReferenceTypeId refId = idMan.readReferenceTypeId(bb); |
| Class clazz = refId.getType(); |
| |
| ObjectId tId = idMan.readObjectId(bb); |
| Thread thread = (Thread) tId.getObject(); |
| |
| ObjectId mId = idMan.readObjectId(bb); |
| Method method = (Method) mId.getObject(); |
| |
| int args = bb.getInt(); |
| Object[] values = new Object[args]; |
| |
| for (int i = 0; i < args; i++) |
| { |
| values[i] = Value.getObj(bb); |
| } |
| |
| int invokeOpts = bb.getInt(); |
| boolean suspend = ((invokeOpts |
| & JdwpConstants.InvokeOptions.INVOKE_SINGLE_THREADED) |
| != 0); |
| try |
| { |
| if (suspend) |
| VMVirtualMachine.suspendAllThreads (); |
| |
| MethodResult mr = VMVirtualMachine.executeMethod(null, thread, |
| clazz, method, |
| values, false); |
| if (suspend) |
| VMVirtualMachine.resumeAllThreads (); |
| |
| return mr; |
| } |
| catch (Exception ex) |
| { |
| if (suspend) |
| VMVirtualMachine.resumeAllThreads (); |
| |
| throw new JdwpInternalErrorException(ex); |
| } |
| } |
| } |