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> You can also "not register" them, either locally or globally. In your child's start_link, use the gen_server/3 instead of gen_server/4.<div><br></div><div>I do this but when using the same id for the specification, I receive already_started error. I believe both need to be unique but my question is why.</div><div><br></div><div>Regards,</div><div><br></div><div>Martin<br><br><br><br>
-------- Оригинално писмо --------
<br>От: Mike Oxford moxford@gmail.com
<br>Относно: Re: [erlang-questions] supervisor:start_child
<br>До: Gregory Haskins <gregory.haskins@gmail.com>
<br>Изпратено на: Понеделник, 2011, Май 2 21:25:57 EEST
<br><br>You can also "not register" them, either locally or globally. In your child's start_link, use the gen_server/3 instead of gen_server/4.<div><br></div><div>You cannot do a "whereis(service)" type call, but your children will run and you won't get the conflicting IDs.</div>
<div><br></div><div>-mox<br><br><div class="gmail_quote">On Mon, May 2, 2011 at 10:17 AM, Gregory Haskins <span dir="ltr"><<a href="javascript:internSendMess('gregory.haskins@gmail.com')" "="">gregory.haskins@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 5/2/11 12:38 PM, Martin Dimitrov wrote:<br>
> Thanks for the advise about the interface.<br>
><br>
>> A normal (i.e. not simple_on_for_one) supervisor allows you to stop,<br>
> restart and delete children processes, so it needs a way to identify<br>
> them. Hence the id.<br>
><br>
> Isn't the process id the natural choice for these purposes?<br>
<br>
</div>Its chicken and egg, though. The supervisor spawns the process and you<br>
have to give it an ID to instruct it to start_child() in the first place.<br>
<div class="im"><br>
><br>
> So there is no way to avoid the need of unique ids if using anything<br>
> other than simple_one_for_one?<br>
<br>
</div>When I don't care, I just use erlang:now() for the ID. Sloppy, perhaps,<br>
but it gets the job done.<br>
<br>
Kind Regards,<br>
-Greg<br>
<br>
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<br></blockquote></div><br></div>
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