shutdown hook for plugins?

When writing a plugin I can do initialization stuff in the register method.
Is there a method I can use that will be called when qpsmtpd is shutting
down?  There's an RRD plugin I'm fiddling with and I would prefer ending
the DB connection when everything shuts down rather than opening and
closing it each time

-- 
  Matthew Harrell                          Dogs have masters,
  Bit Twiddlers, Inc.                       cats have staff
  mharrell@bittwiddlers.com

• shutdown hook for plugins? by Matthew Harrell
• Re: shutdown hook for plugins? by Hanno Hecker
• Re: shutdown hook for plugins? by Matthew Harrell
• Re: shutdown hook for plugins? by Hanno Hecker