/**
* Return true if the receiver containing this boundary detector is connected to the inside of an
* input boundary port; return false otherwise. A boundary port is an opaque port that is
* contained by a composite actor. This method is not synchronized so the caller should be.
*
* @return True if the containing receiver is connected to the inside of a boundary port; return
* false otherwise.
* @exception IllegalActionException
* @exception InvalidStateException
*/
public boolean isConnectedToBoundaryInside()
throws InvalidStateException, IllegalActionException {
if (_connectedInsideOfBoundaryCacheIsOn) {
return _isConnectedInsideOfBoundaryValue;
} else {
IOPort contPort = _receiver.getContainer();
if (contPort == null) {
_connectedInsideOfBoundaryCacheIsOn = false;
_isConnectedInsideOfBoundaryValue = false;
return _isConnectedInsideOfBoundaryValue;
}
ComponentEntity contEntity = (ComponentEntity) contPort.getContainer();
IOPort connectedPort = null;
ComponentEntity connectedEntity = null;
Iterator ports = contPort.connectedPortList().iterator();
while (ports.hasNext()) {
connectedPort = (IOPort) ports.next();
connectedEntity = (ComponentEntity) connectedPort.getContainer();
if ((connectedEntity == contEntity.getContainer())
&& connectedPort.isInput()
&& connectedPort.isOpaque()) {
// The port container of this receiver is
// connected to the inside of a boundary port.
// Now determine if this receiver's channel is
// connected to the boundary port.
Receiver[][] receivers = connectedPort.deepGetReceivers();
for (int i = 0; i < receivers.length; i++) {
for (int j = 0; j < receivers[i].length; j++) {
if (_receiver == receivers[i][j]) {
_connectedInsideOfBoundaryCacheIsOn = true;
_isConnectedInsideOfBoundaryValue = true;
return true;
}
}
}
}
}
_connectedInsideOfBoundaryCacheIsOn = true;
_isConnectedInsideOfBoundaryValue = false;
return _isConnectedInsideOfBoundaryValue;
}
}
/**
* Construct a trigger event with the specified destination IO port, timestamp, microstep, and
* depth.
*
* @param ioPort The destination IO port.
* @param timeStamp The time when the event occurs.
* @param microstep The phase of execution within a fixed time.
* @param depth The topological depth of the destination IO Port.
*/
public DEEvent(IOPort ioPort, Time timeStamp, int microstep, int depth) {
_actor = (Actor) ioPort.getContainer();
_ioPort = ioPort;
_timestamp = timeStamp;
_microstep = microstep;
_depth = depth;
}
/** @return the model entities (should be actors) that can still send input msgs to this port */
public synchronized Set<Entity> getActiveSources() {
Set<Entity> results = new HashSet<Entity>();
for (IOPort port : operationalSourcePorts) {
results.add((Entity) port.getContainer());
}
return results;
}
/**
* Create a map containing the services and Receivers ID's corresponding to a given bidimensional
* array of Receiver. i.e. ((service1, (ID1, ..., IDi), ..., (servicen, (IDj, ..., IDr)).
*
* @param receivers The bidimensional array of Receivers.
* @return A HashMap containing services and lists of Receiver IDs.
*/
private HashMap createServicesReceiversMap(Receiver[][] receivers) {
HashMap servicesReceiversMap = new HashMap();
for (int i = 0; i < receivers.length; i++) {
for (int j = 0; j < receivers[i].length; j++) {
if (receivers[i][j] != null) {
IOPort port = receivers[i][j].getContainer();
Actor actor = (Actor) port.getContainer();
if (!servicesReceiversMap.containsKey(
((ClientThread) actorsThreadsMap.get(actor)).getService())) {
servicesReceiversMap.put(
((ClientThread) actorsThreadsMap.get(actor)).getService(), new LinkedList());
}
LinkedList list =
(LinkedList)
servicesReceiversMap.get(
((ClientThread) actorsThreadsMap.get(actor)).getService());
Integer ID = ((DistributedSDFReceiver) receivers[i][j]).getID();
list.add(ID);
}
}
}
return servicesReceiversMap;
}
/**
* Set the container. This overrides the base class to record the director.
*
* @param port The container.
* @exception IllegalActionException If the container is not of an appropriate subclass of IOPort,
* or if the container's director is not an instance of PNDirector.
*/
public void setContainer(IOPort port) throws IllegalActionException {
super.setContainer(port);
if (port == null) {
_director = null;
} else {
Actor actor = (Actor) port.getContainer();
Director director;
// For a composite actor,
// the receiver type of an input port is decided by
// the executive director.
// While the receiver type of an output is decided by the director.
// NOTE: getExecutiveDirector() and getDirector() yield the same
// result for actors that do not contain directors.
if (port.isInput()) {
director = actor.getExecutiveDirector();
} else {
director = actor.getDirector();
}
if (!(director instanceof PNDirector)) {
throw new IllegalActionException(
port,
"Cannot use an instance of PNQueueReceiver "
+ "since the director is not a PNDirector.");
}
_director = (PNDirector) director;
}
}
/**
* Check for the given channel of the given port to see if variables are needed for recording read
* offset and write offset. If the buffer size of a channel divides the readTokens and writeTokens
* given in the argument, then there is no need for the variables. Otherwise the integer offsets
* are replaced with variables and the code to initialize these variables are generated.
*
* @param port The port to be checked.
* @param channelNumber The channel number.
* @param readTokens The number of tokens read.
* @param writeTokens The number of tokens written.
* @return Code that declares the read and write offset variables.
* @exception IllegalActionException If getting the rate or reading parameters throws it.
*/
protected String _createOffsetVariablesIfNeeded(
IOPort port, int channelNumber, int readTokens, int writeTokens)
throws IllegalActionException {
StringBuffer code = new StringBuffer();
CodeGeneratorHelper helper = (CodeGeneratorHelper) _getHelper(port.getContainer());
int bufferSize = helper.getBufferSize(port, channelNumber);
if (bufferSize != 0 && (readTokens % bufferSize != 0 || writeTokens % bufferSize != 0)) {
// Increase the buffer size of that channel to the power of two.
int newBufferSize = _ceilToPowerOfTwo(bufferSize);
helper.setBufferSize(port, channelNumber, newBufferSize);
int width;
if (port.isInput()) {
width = port.getWidth();
} else {
width = port.getWidthInside();
}
// We check again if the new bufferSize divides readTokens or
// writeTokens. If yes, we could avoid using variable to represent
// offset.
if (readTokens % newBufferSize != 0) {
// Declare the read offset variable.
StringBuffer channelReadOffset = new StringBuffer();
channelReadOffset.append(CodeGeneratorHelper.generateName(port));
if (width > 1) {
channelReadOffset.append("_" + channelNumber);
}
channelReadOffset.append("_readoffset");
String channelReadOffsetVariable = channelReadOffset.toString();
// code.append("static int " + channelReadOffsetVariable + " = "
// + helper.getReadOffset(port, channelNumber) + ";\n");
code.append("static int " + channelReadOffsetVariable + ";\n");
// Now replace the concrete offset with the variable.
helper.setReadOffset(port, channelNumber, channelReadOffsetVariable);
}
if (writeTokens % newBufferSize != 0) {
// Declare the write offset variable.
StringBuffer channelWriteOffset = new StringBuffer();
channelWriteOffset.append(CodeGeneratorHelper.generateName(port));
if (width > 1) {
channelWriteOffset.append("_" + channelNumber);
}
channelWriteOffset.append("_writeoffset");
String channelWriteOffsetVariable = channelWriteOffset.toString();
code.append("static int " + channelWriteOffsetVariable + ";\n");
// Now replace the concrete offset with the variable.
helper.setWriteOffset(port, channelNumber, channelWriteOffsetVariable);
}
}
return code.toString();
}
/**
* Return the local ports whose names match the ports in the specified collection.
*
* @param ports A collection of ports.
* @exception IllegalActionException If no matching port is found.
*/
private Collection<IOPort> _localMirrors(Collection<IOPort> ports) throws IllegalActionException {
Set<IOPort> result = new HashSet<IOPort>();
for (IOPort port : ports) {
IOPort localPort = (IOPort) ((Entity) _actor).getPort(port.getName());
if (localPort == null) {
throw new IllegalActionException(
port.getContainer(), port, "Expected matching port in " + _actor.getFullName());
}
result.add(localPort);
}
return result;
}
/**
* Return the list of sending (up-stream) ports that are connected to the specified port. This
* treats every port as an opaque port.
*
* @param port The specified port.
* @return The list of sending ports.
*/
protected static List<IOPort> _getSourcePortList(IOPort port) {
List<IOPort> result = new ArrayList<IOPort>();
for (IOPort connectedPort : (List<IOPort>) port.connectedPortList()) {
boolean isInput = connectedPort.isInput();
boolean isCompositeInput =
connectedPort.getContainer() instanceof CompositeEntity
&& isInput
&& port.depthInHierarchy() > connectedPort.depthInHierarchy();
if (!isInput || isCompositeInput) {
result.add(connectedPort);
}
}
return result;
}
/**
* Return the director that created this receiver. If this receiver is an inside receiver of an
* output port of an opaque composite actor, then the director will be the local director of the
* container of its port. Otherwise, it's the executive director of the container of its port.Note
* that the director returned is guaranteed to be non-null. This method is read synchronized on
* the workspace.
*
* @return An instance of DEDirector.
* @exception IllegalActionException If there is no container port, or if the port has no
* container actor, or if the actor has no director, or if the director is not an instance of
* DEDirector.
*/
private DEDirector _getDirector() throws IllegalActionException {
IOPort port = getContainer();
if (port != null) {
if (_directorVersion == port.workspace().getVersion()) {
return _director;
}
// Cache is invalid. Reconstruct it.
try {
port.workspace().getReadAccess();
Actor actor = (Actor) port.getContainer();
if (actor != null) {
Director dir;
if (!port.isInput()
&& (actor instanceof CompositeActor)
&& ((CompositeActor) actor).isOpaque()) {
dir = actor.getDirector();
} else {
dir = actor.getExecutiveDirector();
}
if (dir != null) {
if (dir instanceof DEDirector) {
_director = (DEDirector) dir;
_directorVersion = port.workspace().getVersion();
return _director;
} else {
throw new IllegalActionException(getContainer(), "Does not have a DEDirector.");
}
}
}
} finally {
port.workspace().doneReading();
}
}
throw new IllegalActionException(
getContainer(), "Does not have a IOPort as the container of the receiver.");
}
/**
* Return true if the receiver containing this boundary detector is contained on the outside of a
* boundary port. A boundary port is an opaque port that is contained by a composite actor. If the
* containing receiver is contained on the outside of a boundary port then return true; otherwise
* return false. This method is not synchronized so the caller should be.
*
* @return True if the containing receiver is contained on the outside of a boundary port; return
* false otherwise.
*/
public boolean isOutsideBoundary() {
if (_outsideBoundaryCacheIsOn) {
return _isInsideBoundaryValue;
} else {
IOPort innerPort = _receiver.getContainer();
if (innerPort == null) {
_outsideBoundaryCacheIsOn = false;
_isOutsideBoundaryValue = false;
return _isOutsideBoundaryValue;
}
ComponentEntity innerEntity = (ComponentEntity) innerPort.getContainer();
if ((innerEntity != null) && !innerEntity.isAtomic() && innerPort.isOpaque()) {
// The containing receiver is contained by the port
// of a composite actor.
if (innerPort.isOutput() && !innerPort.isInput()) {
_isOutsideBoundaryValue = false;
} else if (!innerPort.isOutput() && innerPort.isInput()) {
_isOutsideBoundaryValue = true;
} else if (!innerPort.isOutput() && !innerPort.isInput()) {
_isOutsideBoundaryValue = false;
} else {
// CONCERN: The following only works if the port
// is not both an input and output.
throw new IllegalArgumentException(
"A port that "
+ "is both an input and output can not be "
+ "properly dealt with by "
+ "PNQueueReceiver.isInsideBoundary");
}
_outsideBoundaryCacheIsOn = true;
return _isOutsideBoundaryValue;
}
_outsideBoundaryCacheIsOn = true;
_isOutsideBoundaryValue = false;
return _isOutsideBoundaryValue;
}
}
/**
* 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;
}
}
/**
* Return the dependency between the specified input port and the specified output port. This is
* done by checking the guards and actions of all the transitions. When called for the first time
* since a change in the model structure, this method performs the complete analysis of the FSM
* and caches the result. Subsequent calls just look up the result.
*
* @param input The input port.
* @param output The output port, or null to update the dependencies (and record equivalence
* classes) without requiring there to be an output port.
* @return The dependency between the specified input port and the specified output port, or null
* if a null output is port specified.
* @exception IllegalActionException If a guard expression cannot be parsed.
*/
public Dependency getDependency(IOPort input, IOPort output) throws IllegalActionException {
// If the dependency is not up-to-date, then update it.
long workspaceVersion = ((NamedObj) _actor).workspace().getVersion();
if (_dependencyVersion != workspaceVersion) {
// Need to update dependencies. The cached version
// is obsolete.
try {
((NamedObj) _actor).workspace().getReadAccess();
_reverseDependencies = new HashMap<IOPort, Map<IOPort, Dependency>>();
_forwardDependencies = new HashMap<IOPort, Map<IOPort, Dependency>>();
// Iterate over all the associated interfaces.
for (CausalityInterface causality : _composedInterfaces) {
List<IOPort> mirrorInputs = causality.getActor().inputPortList();
for (IOPort mirrorInput : mirrorInputs) {
Port localInput = ((Entity) _actor).getPort(mirrorInput.getName());
if (!(localInput instanceof IOPort)) {
throw new IllegalActionException(
_actor,
mirrorInput.getContainer(),
"No matching port with name " + mirrorInput.getName());
}
// The localInput may not be an input port...
// It may have been an output port that the FSMActor controller
// also has as an input port. But we don't want to set a forward
// depedency in this case.
if (!((IOPort) localInput).isInput()) {
continue;
}
Map<IOPort, Dependency> forwardMap = _forwardDependencies.get(localInput);
if (forwardMap == null) {
forwardMap = new HashMap<IOPort, Dependency>();
_forwardDependencies.put((IOPort) localInput, forwardMap);
}
for (IOPort dependentOutput : causality.dependentPorts(mirrorInput)) {
Port localOutput = ((Entity) _actor).getPort(dependentOutput.getName());
if (!(localOutput instanceof IOPort)) {
throw new IllegalActionException(
_actor,
mirrorInput.getContainer(),
"No matching port with name " + mirrorInput.getName());
}
Dependency dependency = causality.getDependency(mirrorInput, dependentOutput);
forwardMap.put((IOPort) localOutput, dependency);
// Now handle the reverse dependencies.
Map<IOPort, Dependency> backwardMap = _reverseDependencies.get(localOutput);
if (backwardMap == null) {
backwardMap = new HashMap<IOPort, Dependency>();
_reverseDependencies.put((IOPort) localOutput, backwardMap);
}
backwardMap.put((IOPort) localInput, dependency);
}
}
}
// Next do equivalence classes.
// We iterate over the input ports, and for each one,
// find the ports for which it has equivalents in any
// associated causality.
_equivalenceClasses = new HashMap<IOPort, Collection<IOPort>>();
Collection<IOPort> localInputs = _actor.inputPortList();
for (IOPort localInput : localInputs) {
Collection<IOPort> equivalences = _equivalenceClasses.get(localInput);
if (equivalences != null) {
// This input port is done.
continue;
}
equivalences = new HashSet<IOPort>();
// Iterate over all the associated interfaces.
for (CausalityInterface causality : _composedInterfaces) {
IOPort mirrorInput =
(IOPort) ((Entity) causality.getActor()).getPort(localInput.getName());
if (mirrorInput == null) {
throw new IllegalActionException(
_actor,
localInput,
"Expected matching port in " + causality.getActor().getFullName());
}
equivalences.addAll(_localMirrors(causality.equivalentPorts(mirrorInput)));
}
// Set the equivalence class for all ports in the set.
for (IOPort equivalentPort : equivalences) {
_equivalenceClasses.put(equivalentPort, equivalences);
}
}
} finally {
((NamedObj) _actor).workspace().doneReading();
}
_dependencyVersion = workspaceVersion;
}
if (output == null) {
return null;
}
Map<IOPort, Dependency> inputMap = _forwardDependencies.get(input);
if (inputMap != null) {
Dependency result = inputMap.get(output);
if (result != null) {
return result;
}
}
// If there is no recorded dependency, then reply
// with the additive identity (which indicates no
// dependency).
return _defaultDependency.oPlusIdentity();
}
/**
* 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();
}
/**
* Construct a UnitTerm from an IOPort. The constructed UnitExpr will have one UnitTerm and it
* will be a variable with the name being that of the port.
*
* @param ioPort The IOPort.
*/
public UnitExpr(IOPort ioPort) {
UnitTerm uTerm = new UnitTerm();
uTerm.setVariable(ioPort.getContainer().getName() + "." + ioPort.getName());
_uTerms.add(uTerm);
}
/**
* Construct a trigger event with the specified destination IO port, timestamp, microstep, and
* depth.
*
* @param ioPort The destination IO port.
* @param timeStamp The time when the event occurs.
* @param microstep The phase of execution within a fixed time.
* @param depth The topological depth of the destination IO Port.
* @exception IllegalActionException If the actor has a priority parameter, but its value cannot
* be obtained, which should be an integer.
*/
public DEEvent(IOPort ioPort, Time timeStamp, int microstep, int depth)
throws IllegalActionException {
this(
ioPort == null ? null : (Actor) ioPort.getContainer(), ioPort, timeStamp, microstep, depth);
}