Re: Review: Extra Daemons / bgworker

Alvaro Herrera <alvherre@2ndquadrant.com>

From: Alvaro Herrera <alvherre@2ndquadrant.com>

To: Markus Wanner <markus@bluegap.ch>

Cc: Dimitri Fontaine <dimitri@2ndQuadrant.fr>, kaigai@kaigai.gr.jp, PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>

Date: 2012-11-30T13:44:43Z

Lists: pgsql-hackers

Markus Wanner wrote:
> On 11/30/2012 01:40 PM, Dimitri Fontaine wrote:
> > I totally missed the need to connect to shared memory to be able to
> > connect to a database and query it. Can't we just link the bgworkder
> > code to the client libpq library, just as plproxy is doing I believe?
> 
> Well, sure you can use libpq. But so can external processes. So that's
> no benefit of running under the postmaster.

No, it's not a benefit of that; but such a process would get started up
when postmaster is started, and shut down when postmaster stops.  So it
makes easier to have processes that need to run alongside postmaster.

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services