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From: Florian Pflug on 16 Jun 2010 06:41
On Jun 16, 2010, at 8:47 , Amir Abdollahi wrote:
> I want to add a new backend process to postgres, to include my own auditing modules.
> How can i do that, also how can i signal it after!

The existing auxiliary processes (in 8.4) and their entry points are
autovacuum (autovacuum.c, AutoVacLauncherMain)
bgwriter (bgwriter.c, BackgroundWriterMain)
walwriter (walwriter.c, WalWriterMain)
startup/recovery (xlog.c, StartupProcessMain)

You should probably compare the characteristics of these processes (when are they launched, how do they interface with the database, ...) to your requirements. Pick the best-matching candidate and start by copying what it does.

best regards,
Florian Pflug


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