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From: "Norbert Koch" <NKoch@demig.de>
To: <kamalp@acm.org>, "Peter Edwards" <peadar.edwards@gmail.com>,
	"Charles Sprickman" <spork@fasttrackmonkey.com>
Date: Wed, 22 Jun 2005 14:58:52 +0200
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Cc: hackers@freebsd.org
Subject: RE: Nagios and threads
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> [snip] 
> > at least some assumptions that the child won't be
> > doing much before
> > execing or exiting. (But Im sure one of the
> 
> The child process should be able to call any system
> calls it likes -without assuming that pthreads from
> the parent process have been copied over to the child
> process. I spose most implementations support that.
> 
> regards
> -kamal

>From "Programming with POSIX Threads" [David R. Butenhof]:

p.197-198:
  ... Avoid using fork in a threaded program (if you can)
      unless you intend to exec a new program immediately
  ... Pthreads does not "terminate" the other threads
      in a forked process. ... They simple cease to exist.
  ... The state of mutexes is not affected by a fork. If
      it was locked in the parent it is locked in the child!


Norbert