Re: [PATCHES] Auto-reload of dynamic libraries

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>
Cc: pgsql-patches(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] Auto-reload of dynamic libraries
Date: 2002-05-04 15:36:45
Message-ID: 27176.1020526605@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers pgsql-patches

Gavin Sherry <swm(at)linuxworld(dot)com(dot)au> writes:
> This small patch reloads dynamic libraries whose modification time is
> greater than that at the time it was initially loaded. This means that
> connections do not need to be reinitialised when a library is recompiled.

Is that a good idea? It's easy to imagine cases where a library is not
designed to be unloaded (eg, it hooks into things in the main backend
and doesn't have a way to unhook). I'd rather stick with the current
behavior of unload/reload only when specifically commanded to.

The patch as given fails in the same inode/different path case, btw.
I think you wanted to make the test further down.

regards, tom lane

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Tom Lane 2002-05-04 16:18:24 Re: Native Windows, Apache Portable Runtime
Previous Message Tom Lane 2002-05-04 15:20:39 Re: Using views and MS access via odbc

Browse pgsql-patches by date

  From Date Subject
Next Message Manfred Koizar 2002-05-05 15:29:24 Reduce per tuple overhead (bitmap)
Previous Message Gavin Sherry 2002-05-04 11:05:35 Auto-reload of dynamic libraries