From: rixed@happyleptic.org
To: guile-user@gnu.org
Subject: Re: debugging guile runtime
Date: Tue, 30 Aug 2011 18:25:27 +0200 [thread overview]
Message-ID: <20110830162527.GA20481@ccellier.rd.securactive.lan> (raw)
In-Reply-To: <87wrduhp1x.fsf@gnu.org>
-[ Tue, Aug 30, 2011 at 05:55:22PM +0200, Ludovic Courtès ]----
> Like in C, it???s up to the application to close those ports that it
> considers worth closing upon exec.
I was under the impression that the idiom was to close all files before
execing a coprocess, but I just checked POSIX popen, R.Stevens and libslack
and none does that. Well, the lib I'm used to does that and it felt
natural to do so that I erroneously assumed it was a mandated behavior
(so that running a coprocess is similar to running a program from a
shell).
OK then, so it's not a bug and I have to live with this behavior
(BTW, if anyone knows the rational behind this, I would be glad to
know).
> If what you want is to close every FD from 3 to ???, then the typical way
> to do this is to loop over those numbers and call close(2) (that???s how
> libdaemon and similar tools do that.)
Except that, as previously discussed in another thread, there is no easy
way to do that between the fork and the exec (since I don't want to
actually close these files in the main program that starts the pipe).
Anyway, what about the other bugs?
Is there anything I could do to advance the thread-safety issue for instance?
next prev parent reply other threads:[~2011-08-30 16:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-29 12:50 debugging guile runtime rixed
2011-08-29 14:35 ` Nala Ginrut
2011-08-29 16:24 ` rixed
2011-08-29 19:20 ` Thien-Thi Nguyen
2011-08-30 10:56 ` rixed
2011-08-30 15:55 ` Ludovic Courtès
2011-08-30 16:25 ` rixed [this message]
2011-08-30 22:25 ` Ludovic Courtès
2011-08-31 7:38 ` rixed
2011-08-31 21:10 ` Andy Wingo
2011-08-31 21:07 ` Andy Wingo
2011-09-01 11:32 ` rixed
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