[PD] Fwd: Variable number of objects?
IOhannes m zmölnig
zmoelnig at iem.at
Sat Oct 1 18:17:57 CEST 2011
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On 10/01/2011 04:48 AM, Ingo wrote:
> Every [receive] will have to check if any [send] message is meant to be for
> this particular [receive]. It will have to check if the header of the [send]
> matches the header of the [receive] until the first character doesn't match
> anymore. Then it will abort checking and the next [receive] will start
> checking, and so on ...
> I can't see how this can be done without taxing the cpu.
this is not how send/receive work in Pd.
in general, Pd's messaging system works in a "push" manner, where data
is pushed from one object to the next, rather than a "pull" manner,
where an object requests a message from the previous one.
therefore, [receive] need not care which [send]s are attached to it.
then, [send] need not search for attached [receive]s either, because the
send-symbol will maintain a linked list of all attached receivers.
going through the linked list for dispatching a message is quite fast.
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