From: bert hubert <ahu@ds9a.nl>
To: Matthias Urlichs <smurf@smurf.noris.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: BUG: NTPL: waitpid() doesn't return?
Date: Sat, 31 Jan 2004 16:37:43 +0100 [thread overview]
Message-ID: <20040131153743.GA13834@outpost.ds9a.nl> (raw)
In-Reply-To: <20040131104606.GA25534@kiste>
On Sat, Jan 31, 2004 at 11:46:06AM +0100, Matthias Urlichs wrote:
> This partial trace is from Debian's mini-dinstall, which is a
> multithreaded Python script.
>
> What happens here is that it spawns a bunch of threads, then some of
> these fork+execve external programs which they waitpid() for.
>
> Unfortunately, some of these waitpid() calls don't return even though
> the waited-for process clearly has exited.
It might be that in the NPTL world only one waitpid() can run per process
simultaneously? Do you wait for all pids or for a specific one?
Bert.
--
http://www.PowerDNS.com Open source, database driven DNS Software
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
next prev parent reply other threads:[~2004-01-31 15:37 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 [this message]
2004-01-31 15:51 ` Matthias Urlichs
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
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