Re: Multiplexing SUGUSR1

Dimitri Fontaine escribió:

> Le mardi 09 décembre 2008, Tom Lane a écrit :
> > I think we need something closer to the postmaster signal multiplexing
> > mechanism, wherein there is a dedicated shared memory area of static
> > layout that holds the signaling flags.  And it needs to be driven off
> > of knowing the target's PID, not anything else.
> 
> ...this makes me recall IMessage Queues from Postgres-R, reworked by Markus to 
> follow your advices about postmaster and shared memory.
>   http://archives.postgresql.org/pgsql-hackers/2008-07/msg01420.php
> 
> Could it be the implementation we need for multiplexing signals from one 
> backend some others?

No, the signalling needed here is far simpler than Markus' IMessage
stuff.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support