Re: question re: questions

[Wolfram Gloger <Wolfram dot Gloger at dent dot med dot uni-muenchen dot de>]

Hello,

> Linuxthreads is pretty much broken when you call pthread_create after
> pthread_join and stack memory is reused for whatever reason.

You're right, I had forgotten about this.  Note that this is _not a
bug_.  The POSIX threads standard does _not_ guarantee that a thread
has "terminated" sufficiently after pthread_join() has returned so
that stack memory could be reused, see

http://groups.google.com/groups?selm=3A797AB3.A57D43E9%40compaq.com

This is another very strong argument against user-defined stacks BTW.

> The
> problem is the corrupted doubly linked list of active threads. The
> linked list is maitained by pthread_handle_create and pthread_exited.
> However, memset in pthread_allocate_stack can trash the doubly linked
> list before the dead threads are removed from the active thread list.
> I don't know what is the best fix. It can be very tricky.

Indeed, I have decided then that it is not worth while to bother with
this because even if you got it working, the feature couldn't be used
portably.

Regards,
Wolfram.