Re: Pthreads, linux, gdb, oh my! (fwd)

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Dec 08 2000 - 12:18:59 EST


> 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created may be out of date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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