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Subject: Re: Pthreads, linux, gdb, oh my! (fwd)
To: peterb@telerama.com (Peter Berger)
Date: Fri, 8 Dec 2000 17:18:59 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <Pine.BSI.4.02.10012081150130.17198-100000@frogger.telerama.com> from "Peter Berger" at Dec 08, 2000 11:53:07 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> I have seen two failure modes:  on my machine (linux 2.2.5-22, glibc
> 2.1.1), when run under gdb 5.0, the created pthreads stick around as

glibc 2.1.1 definitely has problems with several bits of pthreads. You
want 2.1.3 or higher I believe.

> zombies until the machine runs out of resources.  On some friends'
> machines (kernel 2.2.15, glibc 2.1.94), the program creates one pthread,
> waits for it to exit, and then exits.
> 
> and happy, and look forward to finding out what it is.  If it's a kernel
> bug, I submit that this makes pthreads unusable, and want to inquire if
> anyone is working on fixing this?

Its unlikely to be remotely kernel related

>   tg->running++;
>   if (tg->running >= tg->created) {

tg->created may be out of date

>       /* Create a thread that will run and exit. */
>       rc = pthread_create(thread, attr, (void *)threads_test_count_seq_proc, tg

You can create it, count it, then up tg->created out of order



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