[erlang-questions] Sending a message to all linked processes

[John Haugeland]

> I was wondering if there is a simple and straightforward way to send a
> message to all linked processes. Now, I am aware that a process exit signal
> is transmitted in a functionally similar manner, so it seems that at least
> some form of "broadcast to all linked processes" operation exists within the
> runtime. But is it possible to invoke such functionality directly from
> source code?
>

There may be a better way, but here's how I do it:

get_linked_processes() -> [U] = [V||{links,V}<-process_info(self())], U.

[ LP ! message || LP <- get_linked_processes() ].

I suspect that process_info() isn't particularly cheap, so I recommend
reconsidering the bookkeeping.

  - John

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