示例#1
0
  /**
   * Parses the command line. The user must specify at least one class to optimize and the directory
   * in which to place the optimized class files. The methods of the specified classes are then
   * optimized according to the command line options.
   *
   * @see ClassEditor
   * @see ClassFileLoader
   * @see ClassFile
   * @see MethodEditor
   * @see MethodInfo
   * @see CompactArrayInitializer
   * @see FlowGraph
   */
  public static void main(final String[] args) {
    try {
      Main.loader = new ClassFileLoader();

      List classes = new ArrayList(args.length); // The classes to
      // optimize
      boolean gotdir = false; // Has an output directory been specified?

      Main.ARGS = args;

      for (int i = 0; i < args.length; i++) {
        if (args[i].equals("-v") || args[i].equals("-verbose")) {
          Main.VERBOSE = true;
          Main.loader.setVerbose(true);

        } else if (args[i].equals("-debug")) {
          Main.DEBUG = true;
          Main.loader.setVerbose(true);
          ClassFileLoader.DEBUG = true;
          CompactArrayInitializer.DEBUG = true;
          ClassEditor.DEBUG = true;
          FlowGraph.DEBUG = true;
          DominatorTree.DEBUG = true;
          Tree.DEBUG = true;
          CodeGenerator.DEBUG = true;
          Liveness.DEBUG = true;
          SSA.DEBUG = true;
          SSAGraph.DEBUG = true;
          PersistentCheckElimination.DEBUG = true;
          ValueNumbering.DEBUG = true;
          ValueFolding.DEBUG = true;
          ClassHierarchy.DEBUG = true;
          TypeInference.DEBUG = true;
          SSAPRE.DEBUG = true;
          StackPRE.DEBUG = true;
          ExprPropagation.DEBUG = true;
          DeadCodeElimination.DEBUG = true;
          CodeGenerator.DB_OPT_STACK = true;

        } else if (args[i].equals("-trace")) {
          Main.TRACE = true;

        } else if (args[i].equals("-db")) {

          if (++i >= args.length) {
            System.err.println("** No debugging option specified");
            Main.usage();
          }

          if (args[i].equals("bc")) {
            CodeArray.DEBUG = true;

          } else if (args[i].equals("cfg")) {
            FlowGraph.DEBUG = true;

          } else if (args[i].equals("ssa")) {
            SSA.DEBUG = true;
            SSAGraph.DEBUG = true;

          } else if (args[i].equals("graphs")) {
            FlowGraph.DB_GRAPHS = true;

          } else if (args[i].startsWith("-")) {
            i--;

          } else {
            System.err.println("** Unknown debugging option: " + args[i]);
            Main.usage();
          }

        } else if (args[i].equals("-debugvf")) {
          ValueFolding.DUMP = true;

        } else if (args[i].equals("-debugbc")) {
          BloatContext.DEBUG = true;

        } else if (args[i].equals("-help")) {
          Main.usage();

        } else if (args[i].equals("-noanno")) {
          Main.ANNO = false;

        } else if (args[i].equals("-anno")) {
          Main.ANNO = true;

        } else if (args[i].equals("-print-flow-graph")) {
          FlowGraph.PRINT_GRAPH = true;

        } else if (args[i].equals("-preserve-debug")) {
          MethodEditor.PRESERVE_DEBUG = true;

        } else if (args[i].equals("-nouse-stack-vars")) {
          Tree.USE_STACK = false;

        } else if (args[i].equals("-use-stack-vars")) {
          Tree.USE_STACK = true;

        } else if (args[i].equals("-unique-handlers")) {
          MethodEditor.UNIQUE_HANDLERS = true;

        } else if (args[i].equals("-nocompact-array-init")) {
          Main.COMPACT_ARRAY_INIT = false;

        } else if (args[i].equals("-compact-array-init")) {
          Main.COMPACT_ARRAY_INIT = true;

        } else if (args[i].equals("-nostack-alloc")) {
          Main.STACK_ALLOC = false;

        } else if (args[i].equals("-stack-alloc")) {
          Main.STACK_ALLOC = true;

        } else if (args[i].equals("-no-verify")) {
          Main.VERIFY = false;

        } else if (args[i].equals("-peel-loops")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String n = args[i];

          if (n.equals("all")) {
            FlowGraph.PEEL_LOOPS_LEVEL = FlowGraph.PEEL_ALL_LOOPS;

          } else {
            try {
              FlowGraph.PEEL_LOOPS_LEVEL = Integer.parseInt(n);

              if (FlowGraph.PEEL_LOOPS_LEVEL < 0) {
                Main.usage();
              }
            } catch (final NumberFormatException ex) {
              Main.usage();
            }
          }

        } else if (args[i].equals("-color")) {
          Liveness.UNIQUE = false;

        } else if (args[i].equals("-nocolor")) {
          Liveness.UNIQUE = true;

        } else if (args[i].equals("-only-method")) {
          if (++i >= args.length) {
            Main.usage();
          }

          Main.METHOD = args[i];

        } else if (args[i].equals("-classpath")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String classpath = args[i];
          Main.loader.setClassPath(classpath);

        } else if (args[i].equals("-classpath/p")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String classpath = args[i];
          Main.loader.prependClassPath(classpath);

        } else if (args[i].equals("-skip")) {
          if (++i >= args.length) {
            Main.usage();
          }

          String pkg = args[i];

          // Account for class file name on command line
          if (pkg.endsWith(".class")) {
            pkg = pkg.substring(0, pkg.lastIndexOf('.'));
          }

          Main.SKIP.add(pkg.replace('.', '/'));

        } else if (args[i].equals("-only")) {
          if (++i >= args.length) {
            Main.usage();
          }

          String pkg = args[i];

          // Account for class file name on command line
          if (pkg.endsWith(".class")) {
            pkg = pkg.substring(0, pkg.lastIndexOf('.'));
          }

          Main.ONLY.add(pkg.replace('.', '/'));

        } else if (args[i].equals("-nodce")) {
          Main.DCE = false;

        } else if (args[i].equals("-noprop")) {
          Main.PROP = false;

        } else if (args[i].equals("-noappre")) {
          SSAPRE.NO_ACCESS_PATHS = true;

        } else if (args[i].equals("-nopre")) {
          Main.PRE = false;

        } else if (args[i].equals("-dce")) {
          Main.DCE = true;

        } else if (args[i].equals("-prop")) {
          Main.PROP = true;

        } else if (args[i].equals("-appre")) {
          SSAPRE.NO_ACCESS_PATHS = false;

        } else if (args[i].equals("-pre")) {
          Main.PRE = true;

        } else if (args[i].equals("-closure")) {
          Main.CLOSURE = true;

        } else if (args[i].equals("-opt-stack-1")) {
          Main.OPT_STACK_1 = true;
          CodeGenerator.OPT_STACK = true;

        } else if (args[i].equals("-opt-stack-2")) {
          Main.OPT_STACK_2 = true;
          MethodEditor.OPT_STACK_2 = true;

        } else if (args[i].equals("-diva")) {
          Main.DIVA = true;

        } else if (args[i].equals("-no-thread")) {
          SSAPRE.NO_THREAD = true;

        } else if (args[i].equals("-no-precise")) {
          SSAPRE.NO_PRECISE = true;

        } else if (args[i].equals("-relax-loading")) {
          ClassHierarchy.RELAX = true;

        } else if (args[i].equals("-f") || args[i].equals("-force")) {
          Main.FORCE = true;

        } else if (args[i].startsWith("-")) {
          System.err.println("No such option: " + args[i]);
          Main.usage();

        } else if (i == args.length - 1) {
          // Last argument is the name of the output directory

          final File f = new File(args[i]);

          if (f.exists() && !f.isDirectory()) {
            System.err.println("No such directory: " + f.getPath());
            System.exit(2);
          }

          if (!f.exists()) {
            f.mkdirs();
          }

          if (!f.exists()) {
            System.err.println("Couldn't create directory: " + f.getPath());
            System.exit(2);
          }

          // Tell class loader to put optimized classes in f directory
          Main.loader.setOutputDir(f);
          gotdir = true;
        } else {
          // The argument must be a class name...
          classes.add(args[i]);
        }
      }

      if (!gotdir) {
        System.err.println("No output directory specified");
        Main.usage();
      }

      if (classes.size() == 0) {
        System.err.println("** No classes specified");
        Main.usage();
      }

      // Use the CachingBloatingContext
      Main.context = new CachingBloatContext(Main.loader, classes, Main.CLOSURE);

      boolean errors = false;

      final Iterator iter = classes.iterator();

      // Now that we've parsed the command line, load the classes into the
      // class loader
      while (iter.hasNext()) {
        final String name = (String) iter.next();

        try {
          Main.context.loadClass(name);

        } catch (final ClassNotFoundException ex) {
          System.err.println("Couldn't find class: " + ex.getMessage());

          errors = true;
        }
      }

      if (errors) {
        System.exit(1);
      }

      if (!Main.CLOSURE) {
        final Iterator e = classes.iterator();

        // Edit only the classes that were specified on the command line

        while (e.hasNext()) {
          final String name = (String) e.next();
          Main.editClass(name);
        }
      } else {
        // Edit all the classes in the class file editor and their
        // superclasses

        classes = null;

        if (Main.TRACE) {
          System.out.println("Computing closure " + Main.dateFormat.format(new Date()));
        }

        final Iterator e = Main.context.getHierarchy().classes().iterator();

        while (e.hasNext()) {
          final Type t = (Type) e.next();

          if (t.isObject()) {
            Main.editClass(t.className());
          }
        }
      }
    } catch (final ExceptionInInitializerError ex) {
      ex.printStackTrace();
      System.out.println(ex.getException());
    }
  }
示例#2
0
 /**
  * {@linkplain #registerServiceProvider Registers} all factories given by the supplied iterator.
  *
  * @param factories The factories (or "service providers") to register.
  * @param category the category under which to register the providers.
  * @param message A buffer where to write the logging message.
  * @return {@code true} if at least one factory has been registered.
  */
 private <T> boolean register(
     final Iterator<T> factories, final Class<T> category, final StringBuilder message) {
   boolean newServices = false;
   final String lineSeparator = System.getProperty("line.separator", "\n");
   while (factories.hasNext()) {
     T factory;
     try {
       factory = factories.next();
     } catch (OutOfMemoryError error) {
       // Makes sure that we don't try to handle this error.
       throw error;
     } catch (NoClassDefFoundError error) {
       /*
        * A provider can't be registered because of some missing dependencies.
        * This occurs for example when trying to register the WarpTransform2D
        * math transform on a machine without JAI installation. Since the factory
        * may not be essential (this is the case of WarpTransform2D), just skip it.
        */
       loadingFailure(category, error, false);
       continue;
     } catch (ExceptionInInitializerError error) {
       /*
        * If an exception occured during class initialization, log the cause.
        * The ExceptionInInitializerError alone doesn't help enough.
        */
       final Throwable cause = error.getCause();
       if (cause != null) {
         loadingFailure(category, cause, true);
       }
       throw error;
     } catch (Error error) {
       if (!Classes.getShortClassName(error).equals("ServiceConfigurationError")) {
         // We want to handle sun.misc.ServiceConfigurationError only. Unfortunatly, we
         // need to rely on reflection because this error class is not a commited API.
         // TODO: Check if the error is catchable with JSE 6.
         throw error;
       }
       /*
        * Failed to register a factory for a reason probably related to the plugin
        * initialisation. It may be some factory-dependent missing resources.
        */
       loadingFailure(category, error, true);
       continue;
     }
     if (category.isAssignableFrom(factory.getClass())) {
       final Class<? extends T> factoryClass = factory.getClass().asSubclass(category);
       /*
        * If the factory implements more than one interface and an
        * instance were already registered, reuse the same instance
        * instead of duplicating it.
        */
       final T replacement = getServiceProviderByClass(factoryClass);
       if (replacement != null) {
         factory = replacement;
         // Need to register anyway, because the category may not be
         // the same.
       }
       if (registerServiceProvider(factory, category)) {
         /*
          * The factory is now registered. Add it to the message to
          * be logged. We will log all factories together in a single
          * log event because some registration (e.g.
          * MathTransformProviders) would be otherwise quite verbose.
          */
         message.append(lineSeparator);
         message.append("  ");
         message.append(factoryClass.getName());
         newServices = true;
       }
     }
   }
   return newServices;
 }
  /**
   * Process and loop until told to stop. A callback_done will stop the loop and will return a
   * result. Otherwise null is returned.
   */
  public Object run() throws CommandException {
    Object result = null;
    boolean shutdown = false;
    boolean closeWhenDone = true;
    Commands.ValueObject valueObject =
        new Commands.ValueObject(); // Working value object so not continually recreated.
    InvokableValueSender valueSender =
        new InvokableValueSender(); // Working valuesender so not continually recreated.
    try {
      boolean doLoop = true;

      /**
       * Note: In the cases below you will see a lot of finally clauses that null variables out.
       * This is because this is a long running loop, and variables declared within blocks are not
       * garbage collected until the method is terminated, so these variables once set would never
       * be GC'd. The nulling at the end of the case makes sure that any of those objects set are
       * now available for garbage collection when necessary.
       */
      while (doLoop && isConnected()) {
        byte cmd = 0;
        try {
          if (LINUX_1_3) socket.setSoTimeout(1000); // Linux 1.3 bug, see comment on LINUX_1_3
          cmd = in.readByte();
          if (LINUX_1_3 && isConnected())
            socket.setSoTimeout(0); // Linux 1.3 bug, see comment on LINUX_1_3
        } catch (InterruptedIOException e) {
          continue; // Timeout, try again
        }
        switch (cmd) {
          case Commands.QUIT_CONNECTION:
            doLoop = false;
            break; // Close this connection

          case Commands.TERMINATE_SERVER:
            doLoop = false;
            shutdown = true; // Shutdown everything
            break;

          case Commands.GET_CLASS:
            String className = in.readUTF();
            Class aClass = null;
            Class superClass = null;
            String superClassName = null;
            boolean added = false;
            try {
              aClass =
                  Class.forName(
                      className); // Turns out using JNI format for array type will work fine.

              added = server.getIdentityID(aClass, valueObject);
              boolean isInterface = aClass.isInterface();
              boolean isAbstract = java.lang.reflect.Modifier.isAbstract(aClass.getModifiers());
              superClass = aClass.getSuperclass();
              superClassName = (superClass != null) ? superClass.getName() : ""; // $NON-NLS-1$
              out.writeByte(Commands.GET_CLASS_RETURN);
              out.writeInt(valueObject.objectID);
              out.writeBoolean(isInterface);
              out.writeBoolean(isAbstract);
              out.writeUTF(superClassName);
              out.flush();
            } catch (ClassNotFoundException e) {
              valueObject.set();
              Commands.sendErrorCommand(out, Commands.GET_CLASS_NOT_FOUND, valueObject);
            } catch (ExceptionInInitializerError e) {
              sendException(e.getException(), valueObject, out);
            } catch (LinkageError e) {
              sendException(e, valueObject, out);
            } catch (Throwable e) {
              // Something bad, did we add a class? If we did remove it from the table.
              if (added) server.removeObject(server.getObject(valueObject.objectID));
              throw e;
            } finally {
              // clear out for GC to work.
              className = null;
              aClass = null;
              superClass = null;
              superClassName = null;
              valueObject.set();
            }
            break;

          case Commands.GET_CLASS_FROM_ID:
            int classID = in.readInt();
            try {
              aClass = (Class) server.getObject(classID);
              boolean isInterface = aClass.isInterface();
              boolean isAbstract = java.lang.reflect.Modifier.isAbstract(aClass.getModifiers());
              superClass = aClass.getSuperclass();
              superClassName = (superClass != null) ? superClass.getName() : ""; // $NON-NLS-1$
              out.writeByte(Commands.GET_CLASS_ID_RETURN);
              out.writeUTF(aClass.getName());
              out.writeBoolean(isInterface);
              out.writeBoolean(isAbstract);
              out.writeUTF(superClassName);
              out.flush();
            } catch (ClassCastException e) {
              valueObject.set();
              Commands.sendErrorCommand(out, Commands.CLASS_CAST_EXCEPTION, valueObject);
            } finally {
              // clear out for GC to work.
              aClass = null;
              superClass = null;
              superClassName = null;
              valueObject.set();
            }
            break;

          case Commands.GET_OBJECT_DATA:
            int objectID = in.readInt();
            Object anObject = null;
            try {
              anObject = server.getObject(objectID);
              valueObject.setObjectID(objectID, server.getIdentityID(anObject.getClass()));
              Commands.writeValue(out, valueObject, true);
            } catch (ClassCastException e) {
              valueObject.set();
              Commands.sendErrorCommand(out, Commands.CLASS_CAST_EXCEPTION, valueObject);
            } finally {
              anObject = null; // Clear out for GC to work
              valueObject.set();
            }
            break;

          case Commands.RELEASE_OBJECT:
            int id = in.readInt();
            server.removeObject(server.getObject(id));
            break;

          case Commands.NEW_INIT_STRING:
            classID = in.readInt(); // ID Of class to do new upon.
            String initString = in.readUTF(); // The init string.
            Object newValue = null;
            Class theClass = null;
            try {
              theClass = (Class) server.getObject(classID);
              if (theClass == null) {
                // The class wasn't found. So imply ClassNotFound exception.
                throw new ClassNotFoundException();
              }

              InitializationStringParser parser = null;
              try {
                parser = InitializationStringParser.createParser(initString);
                newValue = parser.evaluate();
                boolean primitive = parser.isPrimitive();
                // If expected class is Void.TYPE, that means don't test the type of the result
                // to verify if correct type, just return what it really is.
                if (theClass != Void.TYPE && primitive != theClass.isPrimitive()) {
                  valueObject.set();
                  Commands.sendErrorCommand(out, Commands.CLASS_CAST_EXCEPTION, valueObject);
                  continue; // Goto next command.
                }
                if (primitive) {
                  try {
                    // Need to do special tests for compatibility and assignment.
                    sendObject(
                        newValue,
                        classID != Commands.VOID_TYPE
                            ? classID
                            : server.getIdentityID(parser.getExpectedType()),
                        valueObject,
                        out,
                        true); // This will make sure it goes out as the correct primitive type
                  } catch (ClassCastException e) {
                    // The returned type is not of the correct type for what is expected.
                    valueObject.set();
                    Commands.sendErrorCommand(out, Commands.CLASS_CAST_EXCEPTION, valueObject);
                    continue; // Goto next command
                  }
                } else {
                  if (newValue != null) {
                    // Test to see if they are compatible. (Null can be assigned to any object,
                    // so that is why it was tested out above).
                    // If expected class is Void.TYPE, that means don't test the type of the result
                    // to verify if correct type, just return what it really is.
                    if (theClass != Void.TYPE && !theClass.isInstance(newValue)) {
                      // The returned type is not of the correct type for what is expected.
                      valueObject.set();
                      Commands.sendErrorCommand(out, Commands.CLASS_CAST_EXCEPTION, valueObject);
                      continue; // Goto next command
                    }
                  }
                  sendObject(
                      newValue, NOT_A_PRIMITIVE, valueObject, out, true); // Send out as an object.
                }
              } catch (InitializationStringEvaluationException e) {
                if (e instanceof EvaluationException) {
                  // Want to return the real exception.
                  sendException(e.getOriginalException(), valueObject, out);
                } else {
                  // Couldn't be evaluated, return an error for this.
                  setExceptionIntoValue(e.getOriginalException(), valueObject);
                  Commands.sendErrorCommand(out, Commands.CANNOT_EVALUATE_STRING, valueObject);
                }
              } finally {
                parser = null; // Clear out for GC to work
              }
            } catch (Throwable e) {
              sendException(e, valueObject, out);
            } finally {
              // Clear out for GC to work
              initString = null;
              theClass = null;
              newValue = null;
              valueObject.set();
            }
            break;

          case Commands.INVOKE:
            Object target = null;
            Object[] parms = null;
            Class returnType = null;
            java.lang.reflect.Method aMethod = null;
            try {
              int methodID = in.readInt(); // ID of method to invoke
              aMethod = (java.lang.reflect.Method) server.getObject(methodID); // Method to invoke
              Commands.readValue(in, valueObject);
              target = getInvokableObject(valueObject);
              Commands.readValue(in, valueObject);
              if (valueObject.type == Commands.ARRAY_IDS) {
                // It is an array containing IDs, as it normally would be.
                valueSender.initialize(valueObject);
                Commands.readArray(in, valueObject.anInt, valueSender, valueObject, false);
                parms = (Object[]) valueSender.getArray();
              } else {
                // It is all objects or null, so it should be an Object[] or null. If not, then this
                // is an error.
                parms = (Object[]) valueObject.anObject;
              }

              if (!aMethod.isAccessible())
                aMethod.setAccessible(
                    true); // We will allow all to occur. Let access control be handled by IDE and
                           // compiler.
              newValue = aMethod.invoke(target, parms);
              returnType = aMethod.getReturnType();
              if (returnType.isPrimitive()) {
                int returnTypeID = server.getIdentityID(returnType);
                // Need to tell sendObject the correct primitive type.
                sendObject(newValue, returnTypeID, valueObject, out, true);

              } else {
                sendObject(
                    newValue,
                    NOT_A_PRIMITIVE,
                    valueObject,
                    out,
                    true); // Just send the object back. sendObject knows how to iterpret the type
              }
            } catch (CommandException e) {
              throw e; // Throw it again. These we don't want to come up as an exception proxy.
                       // These should end the thread.
            } catch (java.lang.reflect.InvocationTargetException e) {
              // This is a wrappered exception. Return the wrappered one so it looks like
              // it was the real one. (Sometimes the method being invoked is on a
              // java.lang.reflect.Constructor.newInstance,
              // which in turn is an InvocationTargetException, so we will go until we don't have an
              // InvocationTargetException.
              Throwable t = e;
              do {
                t = ((java.lang.reflect.InvocationTargetException) t).getTargetException();
              } while (t instanceof java.lang.reflect.InvocationTargetException);
              sendException(t, valueObject, out);
            } catch (Throwable e) {
              sendException(e, valueObject, out); // Turn it into a exception proxy on the client.
            } finally {
              // Clear out for GC to work
              valueObject.set();
              parms = null;
              target = null;
              aMethod = null;
              returnType = null;
              newValue = null;
              valueSender.clear();
            }
            break;

          case Commands.INVOKE_WITH_METHOD_PASSED:
            aClass = null;
            String methodName = null;
            Class[] parmTypes = null;
            target = null;
            parms = null;
            returnType = null;
            aMethod = null;

            try {
              Commands.readValue(in, valueObject);
              aClass = (Class) getInvokableObject(valueObject); // The class that has the method.
              methodName = in.readUTF();
              Commands.readValue(in, valueObject);
              if (valueObject.type == Commands.ARRAY_IDS) {
                // It is an array containing IDs, as it normally would be.
                valueSender.initialize(valueObject);
                Commands.readArray(in, valueObject.anInt, valueSender, valueObject, false);
                parmTypes = (Class[]) valueSender.getArray();
              } else {
                // It null, so it should be an null. If not, then this is an error.
                parmTypes = null;
              }
              aMethod = aClass.getMethod(methodName, parmTypes);

              // Now we get the info for the invocation of the method and execute it.
              Commands.readValue(in, valueObject);
              target = getInvokableObject(valueObject);
              Commands.readValue(in, valueObject);
              if (valueObject.type == Commands.ARRAY_IDS) {
                // It is an array containing IDs, as it normally would be.
                valueSender.initialize(valueObject);
                Commands.readArray(in, valueObject.anInt, valueSender, valueObject, false);
                parms = (Object[]) valueSender.getArray();
              } else {
                // It is all objects or null, so it should be an Object[] or null. If not, then this
                // is an error.
                parms = (Object[]) valueObject.anObject;
              }

              if (!aMethod.isAccessible())
                aMethod.setAccessible(
                    true); // We will allow all to occur. Let access control be handled by IDE and
                           // compiler.
              newValue = aMethod.invoke(target, parms);
              returnType = aMethod.getReturnType();
              if (returnType.isPrimitive()) {
                int returnTypeID = server.getIdentityID(returnType);
                // Need to tell sendObject the correct primitive type.
                sendObject(newValue, returnTypeID, valueObject, out, true);

              } else {
                sendObject(
                    newValue,
                    NOT_A_PRIMITIVE,
                    valueObject,
                    out,
                    true); // Just send the object back. sendObject knows how to iterpret the type
              }
            } catch (CommandException e) {
              throw e; // Throw it again. These we don't want to come up as an exception proxy.
                       // These should end the thread.
            } catch (java.lang.reflect.InvocationTargetException e) {
              // This is a wrappered exception. Return the wrappered one so it looks like
              // it was the real one. (Sometimes the method being invoked is on a
              // java.lang.reflect.Constructor.newInstance,
              // which in turn is an InvocationTargetException, so we will go until we don't have an
              // InvocationTargetException.
              Throwable t = e;
              do {
                t = ((java.lang.reflect.InvocationTargetException) t).getTargetException();
              } while (t instanceof java.lang.reflect.InvocationTargetException);
              sendException(t, valueObject, out);

            } catch (Throwable e) {
              sendException(e, valueObject, out); // Turn it into a exception proxy on the client.
            } finally {
              aClass = null;
              methodName = null;
              parmTypes = null;
              // Clear out for GC to work
              valueObject.set();
              parms = null;
              target = null;
              aMethod = null;
              returnType = null;
              newValue = null;
              valueSender.clear();
            }
            break;

          case Commands.GET_ARRAY_CONTENTS:
            try {
              target = server.getObject(in.readInt()); // Array to get the ids for.
              valueObject.setArrayIDS(
                  new ArrayContentsRetriever(target),
                  Array.getLength(target),
                  Commands.OBJECT_CLASS);
              Commands.writeValue(out, valueObject, true); // Write it back as a value command.
            } catch (CommandException e) {
              throw e; // Throw it again. These we don't want to come up as an exception proxy.
                       // These should end the thread.
            } catch (Throwable e) {
              sendException(e, valueObject, out); // Turn it into a exception proxy on the client.
            } finally {
              target = null;
              valueObject.set();
            }
            break;

          case Commands.CALLBACK_DONE:
            try {
              if (connectionThread != null) {
                valueObject.set();
                Commands.sendErrorCommand(out, Commands.UNKNOWN_COMMAND_SENT, valueObject);
              } else {
                try {
                  Commands.readBackValue(in, valueObject, Commands.NO_TYPE_CHECK);
                  if (valueObject.type == Commands.ARRAY_IDS) {
                    // It is an array containing IDs, as it normally would be.
                    valueSender.initialize(valueObject);
                    Commands.readArray(in, valueObject.anInt, valueSender, valueObject, false);
                    result = valueSender.getArray();
                  } else {
                    result = getInvokableObject(valueObject);
                  }
                  doLoop = false; // We need to terminate and return result
                  closeWhenDone = false; // Don't close, we will continue.
                } catch (CommandErrorException e) {
                  // There was an command error on the other side. This means
                  // connection still good, but don't continue the callback processing.
                  doLoop = false; // We need to terminate and return result
                  closeWhenDone = false; // Don't close, we will continue.
                  throw e; // Let it go on out.
                }
              }
            } finally {
              valueObject.set();
              valueSender.clear();
            }
            break;

          case Commands.ERROR:
            try {
              // Got an error command. Don't know what to do but read the
              // value and simply print it out.
              Commands.readValue(in, valueObject);
              result = getInvokableObject(valueObject);
              System.out.println("Error sent to server: Result=" + result); // $NON-NLS-1$
            } finally {
              valueObject.set();
            }
            break;

          case Commands.EXPRESSION_TREE_COMMAND:
            try {
              processExpressionCommand(valueObject, valueSender);
            } finally {
              valueObject.set();
              valueSender.clear();
            }
            break;

          default:
            // Unknown command. We don't know how long it is, so we need to shut the connection
            // down.
            System.err.println("Error: Invalid cmd send to server: Cmd=" + cmd); // $NON-NLS-1$
            doLoop = false;
            closeWhenDone = true;
            break;
        }
      }
    } catch (EOFException e) {
      // This is ok. It means that the connection on the other side was terminated.
      // So just accept this and go down.
    } catch (CommandException e) {
      throw e;
    } catch (SocketException e) {
      if (socket != null)
        throw new UnexpectedExceptionCommandException(
            false, e); // socket null means a valid close request
    } catch (Throwable e) {
      e.printStackTrace();
    } finally {
      if (closeWhenDone) {
        try {
          for (Iterator itr = expressionProcessors.values().iterator(); itr.hasNext(); ) {
            ExpressionProcesserController exp = (ExpressionProcesserController) itr.next();
            exp.close();
          }
        } finally {
          expressionProcessors.clear();
        }

        if (in != null)
          try {
            in.close();
          } catch (Exception e) {
          }
        in = null;
        if (out != null)
          try {
            out.close();
          } catch (Exception e) {
          }
        out = null;
        close();
      }
    }

    if (closeWhenDone && connectionThread != null) server.removeConnectionThread(connectionThread);
    if (shutdown) server.requestShutdown();

    return result;
  }