Re: Gnustep-base thread creation bug.

[Richard Frith-Macdonald]

On 27 Apr 2007, at 22:56, Chris Ball wrote:

> Right now there appears to be a slightly subtle bug in thr-pthread.m.
> Specifically the threads created here are created as joinable  
> threads, this is
> bad because joinable threads have to be joined before their memory is
> released.  What we really want here are detached threads that just  
> go away when
> they are done executing.
>
> This is trivial to test, create a program that spawns threads that  
> do nothing
> but exit and watch as the memory usage explodes as the thread count  
> grows (I
> manage around 300 threads before a cryptic message that actually  
> means ENOMEM
> turns up).

I think thr-pthread.m is used only on OpenBSD systems, and I don't  
have one to test on.

I've changed the code to use _objc_thread_attribs to set the thread  
as not joinable in subversion trunk, and I would be grateful if you  
could test this and let me know if it's ok (if it is, I'll backport  
it to the stable branch).

Looking at the code in the objc runtime library, it seems like that  
would heave exactly the same problem with libpthread and thr-pthread.c
Do you know if that's the case?  If so, do you know if it has been  
reported to the gcc maintainters?