/**
* 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);
// }
}
/**
* 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
}
/**
* 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();
}
