[erlang-questions] Erlang way for process-as-library?
Tue Feb 6 22:53:00 CET 2007
Torbjorn Tornkvist wrote:
> Either let the users of the library start it with
> a start function or you could let every function
> do it automatically. Example:
> start() ->
> case whereis(my_service) of
> Pid when pid(Pid) -> Pid
> _ -> spawn(my_mod, my_server, )
That start function is not safe, especially on an SMP system. You could
get two rocesses running start simultaneously both not finding the
server and both trying to start it.
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