Doc or gen_event:notify/2 Error!

Gunilla Arendt <>
Wed Sep 10 08:08:28 CEST 2003


Snip from the gen_event man page:

"Unless otherwise stated, all functions in this  module  fail
 if  the  specified  event  manager  does not exist or if bad
 arguments are given"

The same goes for gen_server and gen_fsm.

Regards, Gunilla

"Martin J. Logan" wrote:
> 
> Hello,
>    I have found an inconsistency in the docs.
> 
> The docs indicate that the return value for gen_event notify is as
> follows:
> 
> notify(EventMgrRef, Event) -> ok
> 
> This makes sense as it is asynchronous. I pass a registered name to a
> notify call and if the name is not registered I get an exit(). It is the
> same badarg exit that one would expect from
> 
> unregistered_name ! message
> 
> I think that either the docs should be changed to
> 
> notify(EventMgrRef, Event) -> ok | exit()
> 
> or more preferably the notify/2 function should not exit.
> 
> Cheers,
> Martin
> 
> OUTPUT:
> 
> gen_event:notify(martin, martin).
> 
> =ERROR REPORT==== 9-Sep-2003::17:05:56 ===
> Error in process <0.31.0> with exit value:
> {badarg,[{gen_event,send,2},{erl_eval,do_apply,5},{shell,eval_loop,2}]}
> 
> ** exited: {badarg,[{gen_event,send,2},
>                     {erl_eval,do_apply,5},
>                     {shell,eval_loop,2}]} **

-- 
_____Gunilla Arendt______________________________________________
EAB/UKH/KD Erlang/OTP Product Development
  +46-8-7275730  ecn 851 5730



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