MATLAB SIMEVENTS RELEASE NOTES Guía de usuario descargar pdf (Pagina 103)

Combine Entity Paths

5-13

• Connecting a feedback path: A feedback path enters the same queue as an

ordinary path.

Sequence Simultaneous Pending Arrivals

The Path Combiner block does not experience any collisions, even if multiple entities

attempt to arrive at the same time. The categories of behavior are as follows:

• If the entity output port is not blocked when the entities attempt to arrive, then the

sequence of arrivals depends on the sequence of departure events from blocks that

precede the Path Combiner block. For example, the section “Connect Multiple Queues

to the Output Switch” on page 5-20 describes a dependence on generation event

priority values in the “No blockage” case.

Even if the departure time is the same for multiple entities, the sequence might affect

the system's behavior. For example, if the entities advance to a queue, the departure

sequence determines their positions in the queue.

• If pending entities are waiting to advance to the Path Combiner block when its

entity output port changes from blocked to unblocked, then the entity input ports are

notified of the change sequentially. The change from blocked to unblocked means that

an entity can advance to the Path Combiner block.

If at least two entities are waiting to advance to the Path Combiner block via distinct

entity input ports, then the notification sequence is important because the first port

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MATLAB SIMEVENTS RELEASE NOTES Guía de usuario Pagina 103