--- /dev/null 2005-06-09 16:29:11.371620296 -0400 +++ gnu/classpath/jdwp/processor/ClassTypeCommandSet.java 2005-08-04 18:30:28.000000000 -0400 @@ -0,0 +1,228 @@ +/* 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., 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.InvalidFieldException; +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 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 + */ +public class ClassTypeCommandSet 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 + { + 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 true; + } + + private void executeSuperclass(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + Class superClazz = clazz.getSuperclass(); + + 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.readId(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.getId(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.getId(obj); + Exception exception = mr.getThrownException(); + ObjectId eId = idMan.getId(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.readId(bb); + Thread thread = (Thread) tId.getObject(); + + ObjectId mId = idMan.readId(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); + } + boolean suspendSuccess = false; + int invokeOpts = bb.getInt(); + try + { + if ((invokeOpts & JdwpConstants.InvokeOptions.INVOKE_SINGLE_THREADED) + != 0) + { + // We must suspend all running threads first + suspendSuccess = vm.suspendAllThreadsExcept(Thread.currentThread(). + getThreadGroup()); + } + MethodResult mr = vm.executeMethod(null, thread, clazz, method, values, + false); + if (suspendSuccess) + { // We must call resume if we suspended threads + suspendSuccess = false; + vm.resumeAllThreadsExcept(Thread.currentThread().getThreadGroup()); + } + return mr; + } + catch (Exception ex) + { + if (suspendSuccess) + { // We must call resume if we suspended threads + vm.resumeAllThreadsExcept(Thread.currentThread().getThreadGroup()); + } + throw new JdwpInternalErrorException(ex); + } + } +} --- /dev/null 2005-06-09 16:29:11.371620296 -0400 +++ gnu/classpath/jdwp/util/MethodResult.java 2005-08-03 15:32:08.000000000 -0400 @@ -0,0 +1,76 @@ +/* MethodResult.java -- class to wrap around values returned from a Method call + in the VM + 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.util; + +/** + * A class to wrap around values returned from a Method call in the VM. + * + * @author Aaron Luchko + */ +public class MethodResult +{ + // The Object returned by the executing method + private Object returnedValue; + + // Any Exception that was thrown by the executing method + private Exception thrownException; + + public Object getReturnedValue() + { + return returnedValue; + } + + public void setReturnedValue(Object returnedValue) + { + this.returnedValue = returnedValue; + } + + public Exception getThrownException() + { + return thrownException; + } + + public void setThrownException(Exception thrownException) + { + this.thrownException = thrownException; + } + +}