Ejemplo n.º 1
0
  /**
   * Return the buffer size of a given channel (i.e, a given port and a given channel number). The
   * default value is 1. If the port is an output port, then the buffer size is obtained from the
   * inside receiver. If it is an input port, then it is obtained from the specified port.
   *
   * @param port The given port.
   * @param channelNumber The given channel number.
   * @return The buffer size of the given channel.
   * @exception IllegalActionException If the channel number is out of range or if the port is
   *     neither an input nor an output.
   */
  public int getBufferSize(IOPort port, int channelNumber) throws IllegalActionException {
    Receiver[][] receivers = null;

    if (port.isInput()) {
      receivers = port.getReceivers();
    } else if (port.isOutput()) {
      receivers = port.getInsideReceivers();
    }
    // else {
    // throw new IllegalActionException(port,
    // "Port is neither an input nor an output.");
    // }

    // try {
    int size = 0;

    for (int copy = 0; copy < receivers[channelNumber].length; copy++) {
      int copySize = ((SDFReceiver) receivers[channelNumber][copy]).getCapacity();

      if (copySize > size) {
        size = copySize;
      }

      // When an output port of a composite actor is directly
      // connected to an input port of the same composite actor,
      // calling getCapacity() will return 0. Therefore we use
      // the rate to determine the buffer size.
      if (port.isOutput()) {
        copySize = DFUtilities.getRate(port);
        if (copySize > size) {
          size = copySize;
        }
      }
    }

    return size;
    // }
    // catch (ArrayIndexOutOfBoundsException ex) {
    // throw new IllegalActionException(port, "Channel out of bounds: "
    // + channelNumber);
    // }
  }
Ejemplo n.º 2
0
  /**
   * Generate the initialize code for the associated SDF director.
   *
   * @return The generated initialize code.
   * @exception IllegalActionException If the helper associated with an actor throws it while
   *     generating initialize code for the actor.
   */
  public String generateInitializeCode() throws IllegalActionException {
    StringBuffer code = new StringBuffer();
    code.append(super.generateInitializeCode());

    ptolemy.actor.CompositeActor container =
        (ptolemy.actor.CompositeActor) getComponent().getContainer();
    CodeGeneratorHelper containerHelper = (CodeGeneratorHelper) _getHelper(container);

    // Generate code for creating external initial production.
    Iterator outputPorts = container.outputPortList().iterator();
    while (outputPorts.hasNext()) {
      IOPort outputPort = (IOPort) outputPorts.next();
      int rate = DFUtilities.getTokenInitProduction(outputPort);

      if (rate > 0) {
        for (int i = 0; i < outputPort.getWidthInside(); i++) {
          if (i < outputPort.getWidth()) {
            String name = outputPort.getName();

            if (outputPort.isMultiport()) {
              name = name + '#' + i;
            }

            for (int k = 0; k < rate; k++) {
              code.append(CodeStream.indent(containerHelper.getReference(name + "," + k)));
              code.append(" = ");
              code.append(containerHelper.getReference("@" + name + "," + k));
              code.append(";" + _eol);
            }
          }
        }

        // The offset of the ports connected to the output port is
        // updated by outside director.
        _updatePortOffset(outputPort, code, rate);
      }
    }
    return code.toString();
  }
Ejemplo n.º 3
0
  /**
   * Generate code for the firing of refinements.
   *
   * @param code The string buffer that the generated code is appended to.
   * @exception IllegalActionException If the helper associated with an actor throws it while
   *     generating fire code for the actor.
   */
  protected void _generateRefinementCode(StringBuffer code) throws IllegalActionException {

    ptolemy.domains.fsm.kernel.FSMDirector director =
        (ptolemy.domains.fsm.kernel.FSMDirector) getComponent();
    ptolemy.domains.fsm.kernel.FSMActor controller = director.getController();
    FSMActor controllerHelper = (FSMActor) _getHelper(controller);

    int depth = 1;
    code.append(_getIndentPrefix(depth));
    code.append(
        "switch (" + controllerHelper.processCode("$actorSymbol(currentState)") + ") {" + _eol);

    Iterator states = controller.entityList().iterator();
    int stateCount = 0;
    depth++;

    while (states.hasNext()) {
      code.append(_getIndentPrefix(depth));
      code.append("case " + stateCount + ":" + _eol);
      stateCount++;

      depth++;

      State state = (State) states.next();
      Actor[] actors = state.getRefinement();

      if (actors != null) {
        for (int i = 0; i < actors.length; i++) {
          CodeGeneratorHelper actorHelper = (CodeGeneratorHelper) _getHelper((NamedObj) actors[i]);

          // fire the actor
          // code.append(actorHelper.generateFireCode());
          code.append(_getActorName(actors[i]) + "();" + _eol);

          // update buffer offset after firing each actor once
          int[][] rates = actorHelper.getRates();
          Iterator ports = ((Entity) actors[i]).portList().iterator();
          int portNumber = 0;
          while (ports.hasNext()) {
            IOPort port = (IOPort) ports.next();
            if (rates != null) {
              code.append(
                  "switch ("
                      + actorHelper.processCode("$actorSymbol(" + "currentConfiguration)")
                      + ") {"
                      + _eol);
              for (int k = 0; k < rates.length; k++) {
                code.append("case " + k + ":" + _eol);
                if (rates[k] != null) {
                  int rate = rates[k][portNumber];
                  if (port.isInput()) {
                    _updatePortOffset(port, code, rate);
                  } else {
                    _updateConnectedPortsOffset(port, code, rate);
                  }
                  code.append("break;" + _eol);
                }
              }
              code.append("}" + _eol);
            } else {
              int rate = DFUtilities.getRate(port);
              if (port.isInput()) {
                _updatePortOffset(port, code, rate);
              } else {
                _updateConnectedPortsOffset(port, code, rate);
              }
            }
            portNumber++;
          }
        }
      }

      code.append(_getIndentPrefix(depth));
      code.append("break;" + _eol); // end of case statement
      depth--;
    }

    depth--;
    code.append(_getIndentPrefix(depth));
    code.append("}" + _eol); // end of switch statement
  }
Ejemplo n.º 4
0
  /**
   * Return the parameterized scheduling sequence. An exception will be thrown if the graph is not
   * schedulable.
   *
   * @return A schedule of the deeply contained opaque entities in the firing order.
   * @exception NotSchedulableException If a parameterized schedule cannot be derived for the model.
   * @exception IllegalActionException If the rate parameters of the model are not correct, or the
   *     computed rates for external ports are not correct.
   */
  @SuppressWarnings("unused")
  protected Schedule _getSchedule() throws NotSchedulableException, IllegalActionException {
    PSDFDirector director = (PSDFDirector) getContainer();
    CompositeActor model = (CompositeActor) director.getContainer();

    // Get the vectorization factor.
    String vectorizationFactorExpression = "1";

    String vectorizationName = director.vectorizationFactor.getName(model);
    vectorizationFactorExpression = vectorizationName.replaceAll("\\.", "::");

    if (vectorizationFactorExpression.indexOf(" ") != -1) {
      throw new InternalErrorException(
          "The vectorizationFactor "
              + "PSDFDirector parameter must "
              + "not have spaces in its value.  The original value "
              + "was \""
              + vectorizationName
              + "\". Try changing the name of "
              + "director.");
    }

    PSDFGraphReader graphReader = new PSDFGraphReader();
    PSDFGraph graph = (PSDFGraph) graphReader.convert(model);
    _debug("PSDF graph = \n" + graph.toString());

    if (_debugFlag) {
      graph.printEdgeRateExpressions();
    }

    PSDFAPGANStrategy strategy = new PSDFAPGANStrategy(graph);
    ptolemy.graph.sched.Schedule graphSchedule = strategy.schedule();
    _debug("P-APGAN schedule = \n" + graphSchedule.toString());

    SymbolicScheduleElement resultSchedule =
        _expandAPGAN(graph, strategy.getClusterManager().getRootNode(), strategy);
    resultSchedule.setIterationCount(vectorizationFactorExpression);

    _debug("Final schedule = \n" + resultSchedule.toString());

    if (_debugging) {
      _debug("The buffer size map:\n");

      Iterator relations = _bufferSizeMap.keySet().iterator();

      while (relations.hasNext()) {
        Relation relation = (Relation) relations.next();
        _debug(relation.getName() + ": " + _bufferSizeMap.get(relation) + "\n");
      }
    }

    _saveBufferSizes(_bufferSizeMap);

    // Crazy hack to infer firing counts for each actor.
    try {
      _inferFiringCounts(resultSchedule, null);
    } catch (NameDuplicationException ex) {
      throw new NotSchedulableException(new LinkedList(), ex, "Error recording firing counts");
    }

    // Crazy hack to Infer port production: FIXME: This should be
    // done as part of the APGAN expansion where the rates of
    // external ports are unknown The reason is that it will make
    // rate information propagate from an actor input port to
    // another actors input port that are connected on the inside
    // to the same external input port.  See
    // BaseSDFScheduler.setContainerRates.
    Iterator ports = model.portList().iterator();

    while (ports.hasNext()) {
      IOPort port = (IOPort) ports.next();

      if (_debugging && VERBOSE) {
        _debug("External Port " + port.getName());
      }

      if (port.isInput() && port.isOutput()) {
        throw new NotSchedulableException(
            port,
            "External port is both an input and an output, " + "which is not allowed in SDF.");
      } else if (port.isInput()) {
        List sinks = port.insideSinkPortList();

        if (sinks.size() > 0) {
          IOPort connectedPort = (IOPort) sinks.get(0);
          Entity entity = (Entity) connectedPort.getContainer();
          String name = connectedPort.getName(model);
          String identifier = name.replaceAll("\\.", "::");

          String sinkExpression;
          Variable sinkRateVariable =
              DFUtilities.getRateVariable(connectedPort, "tokenConsumptionRate");

          if (sinkRateVariable == null) {
            sinkExpression = "1";
          } else {
            sinkExpression = identifier + "::" + sinkRateVariable.getName();
          }

          String expression = sinkExpression + " * " + entity.getName() + "::firingsPerIteration";

          DFUtilities.setExpressionIfNotDefined(port, "tokenConsumptionRate", expression);

          if (_debugging && VERBOSE) {
            _debug("Setting tokenConsumptionRate to " + expression);
          }
        }
      } else if (port.isOutput()) {
        List sources = port.insideSourcePortList();

        if (sources.size() > 0) {
          IOPort connectedPort = (IOPort) sources.get(0);
          Entity entity = (Entity) connectedPort.getContainer();
          String name = connectedPort.getName(model);
          String identifier = name.replaceAll("\\.", "::");
          Variable sourceRateVariable =
              DFUtilities.getRateVariable(connectedPort, "tokenProductionRate");
          String sourceExpression;

          if (sourceRateVariable == null) {
            sourceExpression = "1";
          } else {
            sourceExpression = identifier + "::" + sourceRateVariable.getName();
          }

          String expression = sourceExpression + " * " + entity.getName() + "::firingsPerIteration";

          DFUtilities.setExpressionIfNotDefined(port, "tokenProductionRate", expression);

          if (_debugging && VERBOSE) {
            _debug("Setting tokenProductionRate to " + expression);
          }
        }

        // Infer init production.
        // Note that this is a very simple type of inference...
        // However, in general, we don't want to try to
        // flatten this model...
        //  Iterator connectedPorts =
        //                     port.insideSourcePortList().iterator();
        //                 IOPort foundOutputPort = null;
        //                 int inferredRate = 0;
        //                 while (connectedPorts.hasNext()) {
        //                     IOPort connectedPort = (IOPort) connectedPorts.next();
        //                     int newRate;
        //                     if (connectedPort.isOutput()) {
        //                         newRate =
        //                             DFUtilities.getTokenInitProduction(connectedPort);
        //                     } else {
        //                         newRate = 0;
        //                     }
        //                     // If we've already set the rate, then check that the
        //                     // rate for any other internal port is correct.
        //                     if (foundOutputPort != null &&
        //                             newRate != inferredRate) {
        //                         throw new NotSchedulableException(
        //                                 "External output port " + port
        //                                 + " is connected on the inside to ports "
        //                                 + "with different initial production: "
        //                                 + foundOutputPort + " and "
        //                                 + connectedPort);
        //                     }
        //                     foundOutputPort = connectedPort;
        //                     inferredRate = newRate;
        //                 }
        //                 DFUtilities._setIfNotDefined(
        //                         port, "tokenInitProduction", inferredRate);
        //                 if (_debugging && VERBOSE) {
        //                     _debug("Setting tokenInitProduction to "
        //                             + inferredRate);
        //                 }
      } else {
        throw new NotSchedulableException(
            port,
            "External port is neither an input and an output, " + "which is not allowed in SDF.");
      }
    }

    // Set the schedule to be valid.
    setValid(true);

    if (resultSchedule instanceof Schedule) {
      return (Schedule) resultSchedule;
    } else {
      // Must be ScheduleElement.
      Schedule schedule = new Schedule();
      schedule.add((ScheduleElement) resultSchedule);
      return schedule;
    }
  }
Ejemplo n.º 5
0
  /**
   * Check to see if variables are needed to represent read and write offsets for the given port.
   *
   * @return Code that declares the read and write offset variables.
   * @exception IllegalActionException If getting the rate or reading parameters throws it.
   */
  protected String _createOffsetVariablesIfNeeded() throws IllegalActionException {
    StringBuffer code = new StringBuffer();
    CompositeActor container = (CompositeActor) getComponent().getContainer();

    boolean inline = ((BooleanToken) _codeGenerator.inline.getToken()).booleanValue();

    StringBuffer tempCode = new StringBuffer();
    Iterator outputPorts = container.outputPortList().iterator();
    while (outputPorts.hasNext()) {

      IOPort outputPort = (IOPort) outputPorts.next();
      for (int i = 0; i < outputPort.getWidthInside(); i++) {
        int readTokens = 0;
        int writeTokens = 0;
        // If each actor firing is inlined in the code, then read
        // and write positions in the buffer must return to the
        // previous values after one iteration of the container actor
        // in order to avoid using read and write offset variables.
        if (inline) {
          readTokens = DFUtilities.getRate(outputPort);
          writeTokens = readTokens;
          // If each actor firing is wrapped in a function, then read
          // and write positions in the buffer must return to the
          // previous values after one firing of this actor or one
          // firing of the actor that produces tokens consumed by the
          // inside receiver of this actor in order to avoid using
          // read and write offset variables.
        } else {
          readTokens = DFUtilities.getRate(outputPort);
          Iterator sourcePorts = outputPort.insideSourcePortList().iterator();
          label1:
          while (sourcePorts.hasNext()) {
            IOPort sourcePort = (IOPort) sourcePorts.next();
            CodeGeneratorHelper helper =
                (CodeGeneratorHelper) _getHelper(sourcePort.getContainer());
            int width;
            if (sourcePort.isInput()) {
              width = sourcePort.getWidthInside();
            } else {
              width = sourcePort.getWidth();
            }
            for (int j = 0; j < width; j++) {
              Iterator channels = helper.getSinkChannels(sourcePort, j).iterator();
              while (channels.hasNext()) {
                Channel channel = (Channel) channels.next();
                if (channel.port == outputPort && channel.channelNumber == i) {
                  writeTokens = DFUtilities.getRate(sourcePort);
                  break label1;
                }
              }
            }
          }
        }
        tempCode.append(_createOffsetVariablesIfNeeded(outputPort, i, readTokens, writeTokens));
      }
    }
    if (tempCode.length() > 0) {
      code.append("\n" + _codeGenerator.comment(container.getName() + "'s offset variables"));
      code.append(tempCode);
    }

    Iterator actors = container.deepEntityList().iterator();
    while (actors.hasNext()) {
      StringBuffer tempCode2 = new StringBuffer();
      Actor actor = (Actor) actors.next();
      Iterator inputPorts = actor.inputPortList().iterator();
      while (inputPorts.hasNext()) {
        IOPort inputPort = (IOPort) inputPorts.next();
        for (int i = 0; i < inputPort.getWidth(); i++) {
          int readTokens = 0;
          int writeTokens = 0;
          // If each actor firing is inlined in the code,
          // then read and write positions in the buffer
          // must return to the previous values after one
          // iteration of the container actor in order to
          // avoid using read and write offset variables.
          if (inline) {
            Variable firings = (Variable) ((NamedObj) actor).getAttribute("firingsPerIteration");
            int firingsPerIteration = ((IntToken) firings.getToken()).intValue();
            readTokens = DFUtilities.getRate(inputPort) * firingsPerIteration;
            writeTokens = readTokens;

            // If each actor firing is wrapped in a
            // function, then read and write positions in
            // the buffer must return to the previous
            // values after one firing of this actor or
            // one firing of the actor that produces
            // tokens consumed by this actor in order to
            // avoid using read and write offset
            // variables.
          } else {
            readTokens = DFUtilities.getRate(inputPort);
            Iterator sourcePorts = inputPort.sourcePortList().iterator();
            label2:
            while (sourcePorts.hasNext()) {
              IOPort sourcePort = (IOPort) sourcePorts.next();
              CodeGeneratorHelper helper =
                  (CodeGeneratorHelper) _getHelper(sourcePort.getContainer());
              int width;
              if (sourcePort.isInput()) {
                width = sourcePort.getWidthInside();
              } else {
                width = sourcePort.getWidth();
              }
              for (int j = 0; j < width; j++) {
                Iterator channels = helper.getSinkChannels(sourcePort, j).iterator();
                while (channels.hasNext()) {
                  Channel channel = (Channel) channels.next();
                  if (channel.port == inputPort && channel.channelNumber == i) {
                    writeTokens = DFUtilities.getRate(sourcePort);
                    break label2;
                  }
                }
              }
            }
          }
          tempCode2.append(_createOffsetVariablesIfNeeded(inputPort, i, readTokens, writeTokens));
        }
      }
      if (tempCode2.length() > 0) {
        code.append("\n" + _codeGenerator.comment(actor.getName() + "'s offset variables"));
        code.append(tempCode2);
      }
    }
    return code.toString();
  }
Ejemplo n.º 6
0
  /**
   * Generate code for transferring enough tokens to fulfill the output production rate.
   *
   * @param outputPort The port to transfer tokens.
   * @param code The string buffer that the generated code is appended to.
   * @exception IllegalActionException If thrown while transferring tokens.
   */
  public void generateTransferOutputsCode(IOPort outputPort, StringBuffer code)
      throws IllegalActionException {
    code.append(
        CodeStream.indent(
            _codeGenerator.comment("SDFDirector: " + "Transfer tokens to the outside.")));

    int rate = DFUtilities.getTokenProductionRate(outputPort);

    CompositeActor container = (CompositeActor) getComponent().getContainer();
    ptolemy.codegen.c.actor.TypedCompositeActor compositeActorHelper =
        (ptolemy.codegen.c.actor.TypedCompositeActor) _getHelper(container);

    if (container instanceof TypedCompositeActorWithCoSimulation) {

      if (_portNumber == 0) {
        int numberOfOutputPorts = container.outputPortList().size();

        code.append(_INDENT2 + "jobjectArray tokensToAllOutputPorts;" + _eol);
        code.append(
            _INDENT2
                + "jclass objClass = (*env)->FindClass(env, "
                + "\"Ljava/lang/Object;\");"
                + _eol);
        code.append(
            _INDENT2
                + "tokensToAllOutputPorts = "
                + "(*env)->NewObjectArray(env, "
                + numberOfOutputPorts
                + ", objClass, NULL);"
                + _eol);
      }

      String portName = outputPort.getName();
      String tokensToThisPort = "tokensTo" + portName;
      ;
      Type type = ((TypedIOPort) outputPort).getType();

      int numberOfChannels = outputPort.getWidthInside();
      code.append(_INDENT2 + "jobjectArray " + tokensToThisPort + ";" + _eol);

      if (type == BaseType.INT) {
        if (!_intFlag) {
          code.append(_INDENT2 + "jclass objClassI = (*env)->FindClass(env, " + "\"[I\");" + _eol);
          _intFlag = true;
        }
        code.append(
            _INDENT2
                + tokensToThisPort
                + " = (*env)->NewObjectArray(env, "
                + numberOfChannels
                + ", objClassI, NULL);"
                + _eol);
      } else if (type == BaseType.DOUBLE) {
        if (!_doubleFlag) {
          code.append(_INDENT2 + "jclass objClassD = (*env)->FindClass(env, " + "\"[D\");" + _eol);
          _doubleFlag = true;
        }
        code.append(
            _INDENT2
                + tokensToThisPort
                + " = (*env)->NewObjectArray(env, "
                + numberOfChannels
                + ", objClassD, NULL);"
                + _eol);
      } else {
        // FIXME: need to deal with other types
      }

      for (int i = 0; i < outputPort.getWidthInside(); i++) {

        String tokensToOneChannel = "tokensToOneChannelOf" + portName;
        if (i == 0) {
          if (type == BaseType.INT) {
            code.append(_INDENT2 + "jint " + tokensToOneChannel + "[" + rate + "];" + _eol);

          } else if (type == BaseType.DOUBLE) {
            code.append(_INDENT2 + "jdouble " + tokensToOneChannel + "[" + rate + "];" + _eol);

          } else {
            // FIXME: need to deal with other types
          }
        }

        String portNameWithChannelNumber = portName;
        if (outputPort.isMultiport()) {
          portNameWithChannelNumber = portName + '#' + i;
        }

        for (int k = 0; k < rate; k++) {
          code.append(
              _INDENT2
                  + tokensToOneChannel
                  + "["
                  + k
                  + "] = "
                  + compositeActorHelper.getReference("@" + portNameWithChannelNumber + "," + k)
                  + ";"
                  + _eol);
        }

        String tokensToOneChannelArray = "arr" + portName + i;
        if (type == BaseType.INT) {
          code.append(
              _INDENT2
                  + "jintArray "
                  + tokensToOneChannelArray
                  + " = "
                  + "(*env)->NewIntArray(env, "
                  + rate
                  + ");"
                  + _eol);
          code.append(
              _INDENT2
                  + "(*env)->SetIntArrayRegion"
                  + "(env, "
                  + tokensToOneChannelArray
                  + ", 0, "
                  + rate
                  + ", "
                  + tokensToOneChannel
                  + ");"
                  + _eol);

        } else if (type == BaseType.DOUBLE) {
          code.append(
              _INDENT2
                  + "jdoubleArray "
                  + tokensToOneChannelArray
                  + " = "
                  + "(*env)->NewDoubleArray(env, "
                  + rate
                  + ");"
                  + _eol);
          code.append(
              _INDENT2
                  + "(*env)->SetDoubleArrayRegion"
                  + "(env, "
                  + tokensToOneChannelArray
                  + ", 0, "
                  + rate
                  + ", "
                  + tokensToOneChannel
                  + ");"
                  + _eol);

        } else {
          // FIXME: need to deal with other types
        }

        code.append(
            _INDENT2
                + "(*env)->SetObjectArrayElement"
                + "(env, "
                + tokensToThisPort
                + ", "
                + i
                + ", "
                + tokensToOneChannelArray
                + ");"
                + _eol);
        code.append(
            _INDENT2 + "(*env)->DeleteLocalRef(env, " + tokensToOneChannelArray + ");" + _eol);
      }

      code.append(
          _INDENT2
              + "(*env)->SetObjectArrayElement"
              + "(env, tokensToAllOutputPorts, "
              + _portNumber
              + ", "
              + tokensToThisPort
              + ");"
              + _eol);
      code.append(_INDENT2 + "(*env)->DeleteLocalRef(env, " + tokensToThisPort + ");" + _eol);
      _portNumber++;

    } else {
      for (int i = 0; i < outputPort.getWidthInside(); i++) {
        if (i < outputPort.getWidth()) {
          String name = outputPort.getName();

          if (outputPort.isMultiport()) {
            name = name + '#' + i;
          }

          for (int k = 0; k < rate; k++) {
            code.append(CodeStream.indent(compositeActorHelper.getReference(name + "," + k)));
            code.append(" =" + _eol);
            code.append(
                CodeStream.indent(
                    _INDENT2 + compositeActorHelper.getReference("@" + name + "," + k)));
            code.append(";" + _eol);
          }
        }
      }
    }

    // The offset of the ports connected to the output port is
    // updated by outside director.
    _updatePortOffset(outputPort, code, rate);
  }
Ejemplo n.º 7
0
  /**
   * Generate code for transferring enough tokens to complete an internal iteration.
   *
   * @param inputPort The port to transfer tokens.
   * @param code The string buffer that the generated code is appended to.
   * @exception IllegalActionException If thrown while transferring tokens.
   */
  public void generateTransferInputsCode(IOPort inputPort, StringBuffer code)
      throws IllegalActionException {
    code.append(
        CodeStream.indent(
            _codeGenerator.comment("SDFDirector: " + "Transfer tokens to the inside.")));
    int rate = DFUtilities.getTokenConsumptionRate(inputPort);

    CompositeActor container = (CompositeActor) getComponent().getContainer();
    ptolemy.codegen.c.actor.TypedCompositeActor compositeActorHelper =
        (ptolemy.codegen.c.actor.TypedCompositeActor) _getHelper(container);

    if (container instanceof TypedCompositeActorWithCoSimulation) {

      Type type = ((TypedIOPort) inputPort).getType();
      String portName = inputPort.getName();

      for (int i = 0; i < inputPort.getWidth(); i++) {
        if (i < inputPort.getWidthInside()) {

          String tokensFromOneChannel = "tokensFromOneChannelOf" + portName + i;
          String pointerToTokensFromOneChannel = "pointerTo" + tokensFromOneChannel;
          code.append(_INDENT2);
          code.append(
              "jobject "
                  + tokensFromOneChannel
                  + " = (*env)->GetObjectArrayElement(env, "
                  + portName
                  + ", "
                  + i
                  + ");"
                  + _eol);

          code.append(_INDENT2);
          if (type == BaseType.INT) {
            code.append(
                "jint * "
                    + pointerToTokensFromOneChannel
                    + " = (*env)->GetIntArrayElements"
                    + "(env, "
                    + tokensFromOneChannel
                    + ", NULL);"
                    + _eol);

          } else if (type == BaseType.DOUBLE) {
            code.append(
                "jdouble * "
                    + pointerToTokensFromOneChannel
                    + " = (*env)->GetDoubleArrayElements"
                    + "(env, "
                    + tokensFromOneChannel
                    + ", NULL);"
                    + _eol);
          } else {
            // FIXME: need to deal with other types
          }
          String portNameWithChannelNumber = portName;
          if (inputPort.isMultiport()) {
            portNameWithChannelNumber = portName + '#' + i;
          }
          for (int k = 0; k < rate; k++) {
            code.append(_INDENT2);
            code.append(
                compositeActorHelper.getReference("@" + portNameWithChannelNumber + "," + k));
            code.append(" = " + pointerToTokensFromOneChannel + "[" + k + "];" + _eol);
          }

          code.append(_INDENT2);
          if (type == BaseType.INT) {
            code.append(
                "(*env)->ReleaseIntArrayElements(env, "
                    + tokensFromOneChannel
                    + ", "
                    + pointerToTokensFromOneChannel
                    + ", 0);"
                    + _eol);

          } else if (type == BaseType.DOUBLE) {
            code.append(
                "(*env)->ReleaseDoubleArrayElements(env, "
                    + tokensFromOneChannel
                    + ", "
                    + pointerToTokensFromOneChannel
                    + ", 0);"
                    + _eol);
          } else {
            // FIXME: need to deal with other types
          }
        }
      }

    } else {
      for (int i = 0; i < inputPort.getWidth(); i++) {
        if (i < inputPort.getWidthInside()) {
          String name = inputPort.getName();

          if (inputPort.isMultiport()) {
            name = name + '#' + i;
          }

          for (int k = 0; k < rate; k++) {
            code.append(CodeStream.indent(compositeActorHelper.getReference("@" + name + "," + k)));
            code.append(" =" + _eol);
            code.append(
                CodeStream.indent(_INDENT2 + compositeActorHelper.getReference(name + "," + k)));
            code.append(";" + _eol);
          }
        }
      }
    }
    // The offset of the input port itself is updated by outside director.
    _updateConnectedPortsOffset(inputPort, code, rate);
  }