From: "Matthias Urlichs" <smurf@smurf.noris.de>
To: bert hubert <ahu@ds9a.nl>, linux-kernel@vger.kernel.org
Subject: Re: BUG: NTPL: waitpid() doesn't return?
Date: Sat, 31 Jan 2004 16:51:55 +0100 [thread overview]
Message-ID: <20040131155155.GA1504@kiste> (raw)
In-Reply-To: <20040131153743.GA13834@outpost.ds9a.nl>
Hi,
bert hubert:
> It might be that in the NPTL world only one waitpid() can run per process
> simultaneously?
Good call ...
> Do you wait for all pids or for a specific one?
>
... looking at the strace output, I see that thre are four different
threads calling fork+child-exec/parent-waitpid() in parallel. The last
one actually succeeds, so you might be right with this analysis.
*Sigh* No matter how many people work at that code in the kernel, it's
_still_ fragile. :-/
--
Matthias Urlichs | noris network AG | http://smurf.noris.de/
next prev parent reply other threads:[~2004-01-31 16:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-31 10:46 BUG: NTPL: waitpid() doesn't return? Matthias Urlichs
2004-01-31 15:37 ` bert hubert
2004-01-31 15:51 ` Matthias Urlichs [this message]
2004-01-31 16:18 ` bert hubert
2004-01-31 18:15 ` Matthias Urlichs
2004-01-31 19:19 ` bert hubert
2004-01-31 20:49 ` Matthias Urlichs
2004-01-31 21:18 ` bert hubert
2004-01-31 21:41 ` Matthias Urlichs
2004-01-31 21:52 ` Roland McGrath
2004-01-31 19:02 ` Linus Torvalds
2004-01-31 20:00 ` Matthias Urlichs
2004-01-31 20:58 ` Linus Torvalds
2004-01-31 21:11 ` Matthias Urlichs
2004-01-31 22:52 ` Linus Torvalds
2004-01-31 22:29 ` Matthias Urlichs
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040131155155.GA1504@kiste \
--to=smurf@smurf.noris.de \
--cc=ahu@ds9a.nl \
--cc=linux-kernel@vger.kernel.org \
/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.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox