[ILUG] Signal handling

[Brian Foster]

 sorry Paul, due to an excess of FFW (Fine French Wine),
 I hit the wrong keys ... this was meant to go to ILUG.
cheer(*hic*)s!
	-blf\_...

------- Forwarded Message

To: "Paul Kelly :: Blacknight Solutions" <paul at blacknight.ie>
Subject: Re: [ILUG] Signal handling

 | From: "Paul Kelly :: Blacknight Solutions" <paul at blacknight.ie>
 | Date: Wed, 8 Dec 2004 08:42:20 -0000
 |  >  I tend to agree, but should point out one issue:
 |  >  killing/restarting something emitting audio will
 |  >  cause a "glitch" in the sound (besides probably
 |  >  restarting it from the beginning), which is not
 |  >  necessarily desirable.  whether or not this is
 |  >  Dale's concern is unknown ("a little messy" can
 |  >  mean many things).
 | 
 | I'm no whiz kid when it comes to programming, but logic would take over at
 | this point.  When the parent process dies it should ask the child process to
 | end cleanly, i.e. have it perform a cleanup/logging operation when the
 | parent dies.  [ ... ]

 not possible in all circumstances.
 e.g., kill -9 parent.
 or the parent's stack overflowed (so the parent's
 signal or atexit(3) hander does not (cannot) run).

 the pidfile approach is a common and workable (but
 not 100% reliable) answer to the question that was
 asked.

 one logical question is: “is the asked question the
 best question to have asked?”  (another is, “why is
 the parent dying?”  at a very crude level, seems to
 me that if you fix whatever it is which is causing
 the parent to die, the problem becomes tolerable.)

 due to the lack of detail, I have been deliberately
 steering clear of these (and other) questions, and
 concentrating on the questioner's stated, be it odd
 and unusual, requirement.

cheers!
	-blf-
-- 
Experienced (20+ years) kernel engineer: |  Brian Foster      Montpellier,
 · Unix, ChorusOS, others;               |  blf at utvinternet.ie      FRANCE
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