private void _RunSuccessor(IExecutive exec, object userData)
{
StepStateMachine ssm = ((object[])userData)[0] as StepStateMachine;
PfcExecutionContext parentPfcec = ((object[])userData)[1] as PfcExecutionContext;
Debug.Assert(!parentPfcec.IsStepCentric);
ssm.Start(parentPfcec);// Must run ones' successor in the context of out parent, not the predecessor step.
}
public ExecutionEngine(IProcedureFunctionChart pfc, ExecutionEngineConfiguration eec)
{
m_executionEngineConfiguration = eec;
m_model = pfc.Model;
m_stepStateMachines = new Dictionary <IPfcStepNode, StepStateMachine>();
m_transitionStateMachines = new Dictionary <IPfcTransitionNode, TransitionStateMachine>();
foreach (IPfcStepNode pfcStepNode in pfc.Steps)
{
StepStateMachine ssm = new StepStateMachine(pfcStepNode);
ssm.StructureLocked = m_executionEngineConfiguration.StructureLockedDuringRun;
m_stepStateMachines.Add(pfcStepNode, ssm);
ssm.MyStep = pfcStepNode;
((PfcStep)pfcStepNode).MyStepStateMachine = ssm;
}
foreach (IPfcTransitionNode pfcTransNode in pfc.Transitions)
{
TransitionStateMachine tsm = new TransitionStateMachine(pfcTransNode);
tsm.ScanningPeriod = m_executionEngineConfiguration.ScanningPeriod;
m_transitionStateMachines.Add(pfcTransNode, tsm);
tsm.MyTransition = pfcTransNode;
((PfcTransition)pfcTransNode).MyTransitionStateMachine = tsm;
}
StepStateMachineEvent ssme = new StepStateMachineEvent(anSSM_StepStateChanged);
foreach (IPfcStepNode step in pfc.Steps)
{
step.MyStepStateMachine.StepStateChanged += ssme;
foreach (IPfcTransitionNode transNode in step.SuccessorNodes)
{
step.MyStepStateMachine.SuccessorStateMachines.Add(transNode.MyTransitionStateMachine);
}
if (step.MyStepStateMachine.SuccessorStateMachines.Count == 0)
{
string message =
$"Step {step.Name} in PFC {step.Parent.Name} has no successor transition. A PFC must end with a termination transition. (Did you acquire an Execution Engine while the Pfc was still under construction?)";
throw new ApplicationException(message);
}
}
TransitionStateMachineEvent tsme = new TransitionStateMachineEvent(aTSM_TransitionStateChanged);
foreach (IPfcTransitionNode trans in pfc.Transitions)
{
TransitionStateMachine thisTsm = m_transitionStateMachines[trans];
thisTsm.TransitionStateChanged += tsme;
foreach (IPfcStepNode stepNode in trans.SuccessorNodes)
{
thisTsm.SuccessorStateMachines.Add(m_stepStateMachines[stepNode]);
}
foreach (IPfcStepNode stepNode in trans.PredecessorNodes)
{
thisTsm.PredecessorStateMachines.Add(m_stepStateMachines[stepNode]);
}
}
List <IPfcStepNode> startSteps = pfc.GetStartSteps();
_Debug.Assert(startSteps.Count == 1);
m_startStep = m_stepStateMachines[startSteps[0]];
}
void anSSM_StepStateChanged(StepStateMachine ssm, object userData)
{
StepStateChanged?.Invoke(ssm, userData);
}
private void RunSuccessor(StepStateMachine ssm, IDictionary graphContext)
{
m_myTransition.Model.Executive.RequestEvent(new ExecEventReceiver(_RunSuccessor), m_myTransition.Model.Executive.Now, 0.0, new object[] { ssm, graphContext }, ExecEventType.Detachable);
}
public abstract void Run(PfcExecutionContext parameters, StepStateMachine ssm);
public abstract void GetPermissionToStart(PfcExecutionContext myPfcec, StepStateMachine ssm);