[erlang-questions] Re: erl startup
Wed Jun 2 03:26:09 CEST 2010
On Tue, Jun 1, 2010 at 6:37 PM, Bernard Duggan <> wrote:
> On 02/06/10 08:43, Wes James wrote:
>>> wait_for_exit() ->
>>> some_exit_signal -> ok;
>>> _ -> wait_for_exit()
>> If I do this
>> module:wait_for_exit() ! some_exit_signal.
>> It just hangs. I have to hit ctrl-c to kill it. Isn't it supposed to
>> exit wait_for_exit() after that?
> ...No? What you're asking it to do there is to send the message
> 'some_exit_signal' to the process returned by the call
> module:wait_for_exit(). That function doesn't return a process - indeed,
> its whole point is to /not return at all/ until it receives that message.
> You need to get the PID of the process that's running (the value returned by
> start()) and send the signal to that. ie:
> 1> Pid = module:start().
> <some pid>
> 2> Pid ! some_exit_signal.
Thx again. That worked.
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