public boolean isSingleRateActor() {
for (Action action : mActor.getImplementation().getActions()) {
PortSignature portSignature = action.getPortSignature();
for (PortInstance portInstance : portSignature.getPorts()) {
if (portSignature.getPortRate(portInstance) > 1) return false;
}
}
return true; // executesIndefinitely();
}
/**
* An actor is a multi-rate static actor (SDF) if 1.all ports are active in all actions in the
* periodic phase 2.all actions in the periodic phase have the same port signature
*
* @return true if it is an SDF actor and false otherwise.
*/
private boolean isMultiRateStaticActor() {
if (!hasStaticSchedule()) return false;
// check if all ports are active in the periodic phase
List<Action> actions =
new ArrayList<Action>(getStaticSchedule().getRepeatedPhase().getFlatSequence());
for (PortInstance portInstance : mActor.getPorts()) {
if (!getPortAnalysis(portInstance).isActiveInAllActions(actions)) return false;
}
// Check if all actions in the periodic phase have the same port signatures
PortSignature refPortSignature = null;
for (Action action : getStaticSchedule().getRepeatedPhase().getFlatSequence()) {
if (refPortSignature == null) refPortSignature = action.getPortSignature();
else {
if (refPortSignature.isSubsetOf(action.getPortSignature())
&& action.getPortSignature().isSubsetOf(refPortSignature)) continue;
else return false;
}
}
return executesIndefinitely();
}