[erlang-questions] broadcast message to all gen_server

AD <>
Wed Apr 11 03:43:57 CEST 2012


yea i finally backtracked more through the code and realized you can just do

 sockjs_session:send(iolist_to_binary([Msg]),{sockjs_session,{P,empty}})

 as an API call to a gen_server:cast() call.  I am gonna throw this into a
spawn(fun() -> ) to get as close to "broadcast" as possible unless there is
negligible gain in doing this since its an async call anyway.

-A



On Tue, Apr 10, 2012 at 7:09 PM, Tilman Holschuh
<>wrote:

> And this doesn't work for you?
>
> https://github.com/sockjs/**sockjs-erlang/blob/master/src/**
> sockjs_session.erl#L66<https://github.com/sockjs/sockjs-erlang/blob/master/src/sockjs_session.erl#L66>
>
> It's a cast and you can supply the pid (just wondering why he explicitly
> returns ok but that doesn't matter).
>
> Cheers
> - Tilman
>
>
> On 12-04-10 03:01 PM, AD wrote:
>
>> the gen_server is part of the sockjs server and i was trying to not
>> modify/fork his code and leverage what is already there. Currently he uses
>> a handle_call() so was looking at handling it outside his code.
>>
>> -AD
>>
>> On Tue, Apr 10, 2012 at 4:18 PM, Tilman Holschuh
>> <>**wrote:
>>
>>
>>> On 12-04-10 12:37 PM, AD wrote:
>>>
>>>   I have a situation where i am trying to handle a case where I am using
>>>> sockjs and need to send a message to each sockjs session_server (which
>>>> is
>>>> a
>>>> gen_server).  I am using gproc() but I cant simply do a gproc_send() b/c
>>>> the message ends up in handle_info() instead of properly in
>>>> handle_call().
>>>>  I have managed to work this out, when receiving a message from
>>>> rabbitmq i
>>>> do a gproc:lookup_pids() and then loop through each pid and do a
>>>> gen_server:call(PID,Message).  The issue is this is a linear process, is
>>>> there a way to handle sending gen_server:call() to all the processes
>>>> concurrently ?
>>>>
>>>>
>>> Do you need a response from the gen_server:call? If not you could just
>>> use
>>> a cast instead. Something like:
>>>
>>> [gen_server:cast(Pid, Message) || Pid<- gproc:lookup_pids()]
>>>
>>>
>>> Cheers
>>> - Tilman
>>>
>>> ______________________________****_________________
>>> erlang-questions mailing list
>>> 
>>> http://erlang.org/mailman/****listinfo/erlang-questions<http://erlang.org/mailman/**listinfo/erlang-questions>
>>> <http**://erlang.org/mailman/**listinfo/erlang-questions<http://erlang.org/mailman/listinfo/erlang-questions>
>>> >
>>>
>>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20120410/e816d151/attachment.html>


More information about the erlang-questions mailing list