From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Giorgos Keramidas <keramida@ceid.upatras.gr>
Cc: lekktu@gmail.com, Eli Zaretskii <eliz@gnu.org>,
Roland.Winkler@physik.uni-erlangen.de, emacs-devel@gnu.org
Subject: Re: proced: ppid of process ID 0 can be 0
Date: Tue, 23 Dec 2008 21:34:56 -0500 [thread overview]
Message-ID: <jwvwsdqz4hw.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87wsdqjzar.fsf@kobe.laptop> (Giorgos Keramidas's message of "Wed, 24 Dec 2008 00:34:52 +0200")
>>>> More to the point: even if we could distinguish the "no ppid" from
>>>> "unkown ppid", it's unclear how Elisp code could make use of it.
>>> Lisp code cannot, but a primitive written in C can.
>>
>> Like what can it do?
> It can differentiate between FreeBSD 4.3 and FreeBSD 7.2 if they use a
> different style of `process root', or between Linux 1.2.X, 2.4.X and
> 2.6.X. Right now, Emacs sets `system-type' to "berkeley-unix" on more
> than one BSD system. They might be easier to detect at C level.
That's not what I'm asking. I'm asking: what can C code (or Elisp code
for that matter) do when the ppid is somehow not found (i.e. there's no
ppid available, but the process might have a parent).
Stefan
next prev parent reply other threads:[~2008-12-24 2:34 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-20 2:52 proced: ppid of process ID 0 can be 0 Juanma Barranquero
2008-12-20 3:27 ` Stefan Monnier
2008-12-20 4:31 ` Chong Yidong
2008-12-20 19:10 ` Stefan Monnier
2008-12-20 10:20 ` Juanma Barranquero
2008-12-20 11:34 ` Eli Zaretskii
2008-12-20 19:41 ` Roland Winkler
2008-12-20 21:02 ` Juanma Barranquero
2008-12-20 22:02 ` Eli Zaretskii
2008-12-20 22:41 ` Roland Winkler
2008-12-21 4:15 ` Eli Zaretskii
2008-12-21 4:48 ` Roland Winkler
2008-12-21 19:17 ` Eli Zaretskii
2008-12-21 21:26 ` Juanma Barranquero
2008-12-22 4:09 ` Eli Zaretskii
2008-12-22 10:41 ` Juanma Barranquero
2008-12-22 19:17 ` Eli Zaretskii
2008-12-22 19:26 ` Juanma Barranquero
2008-12-22 2:45 ` Stefan Monnier
2008-12-22 4:08 ` Eli Zaretskii
2008-12-22 4:17 ` Miles Bader
2008-12-22 19:10 ` Eli Zaretskii
2008-12-22 8:54 ` Harald Hanche-Olsen
2008-12-22 10:43 ` Juanma Barranquero
2008-12-22 10:50 ` Harald Hanche-Olsen
2008-12-22 18:03 ` Giorgos Keramidas
2008-12-22 10:59 ` Andreas Schwab
2008-12-22 19:22 ` Eli Zaretskii
2008-12-22 19:37 ` David De La Harpe Golden
2008-12-22 19:59 ` Andreas Schwab
2008-12-22 12:23 ` Stefan Monnier
2008-12-22 19:57 ` Eli Zaretskii
2008-12-22 22:24 ` Stefan Monnier
2008-12-23 4:02 ` Eli Zaretskii
2008-12-23 12:28 ` Roland Winkler
2008-12-23 14:44 ` Stefan Monnier
2008-12-23 19:12 ` Eli Zaretskii
2008-12-23 20:41 ` Stefan Monnier
2008-12-23 22:34 ` Giorgos Keramidas
2008-12-24 2:34 ` Stefan Monnier [this message]
2008-12-24 4:14 ` Eli Zaretskii
2008-12-24 16:47 ` Stefan Monnier
2008-12-24 4:15 ` Eli Zaretskii
2008-12-24 16:47 ` Stefan Monnier
2008-12-24 18:29 ` Eli Zaretskii
2008-12-24 18:55 ` Stefan Monnier
2008-12-24 21:12 ` Eli Zaretskii
2008-12-30 17:11 ` Stefan Monnier
2008-12-30 22:02 ` Eli Zaretskii
2008-12-31 1:40 ` Stefan Monnier
2008-12-22 8:28 ` Ulrich Mueller
2008-12-21 2:18 ` Stefan Monnier
-- strict thread matches above, loose matches on Subject: below --
2008-12-24 7:42 grischka
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=jwvwsdqz4hw.fsf-monnier+emacs@gnu.org \
--to=monnier@iro.umontreal.ca \
--cc=Roland.Winkler@physik.uni-erlangen.de \
--cc=eliz@gnu.org \
--cc=emacs-devel@gnu.org \
--cc=keramida@ceid.upatras.gr \
--cc=lekktu@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).