Re: [PATCH] Linux: Add gettid system call wrapper [BZ #6399]

[Florian Weimer <fweimer at redhat dot com>]

* Christian Brauner:

> Florian, if this is not just about POSIX but also about the actual
> implementation could you maybe add a section to the manual what
> happens when:

> - the thread-group leader exits
> - the thread-group leader becomes a zombie
> - whether a thread-group can be reparented
> ?
> Obviously all three are closely related.

I lack the technical expertise in this area to do this, but input is
welcome.  I can probably come up with wording.  Some of this should
perhaps go to the man-pages project because I think the glibc manual
should document only cases which are possible to observe with the glibc
implementation (with NPTL using CLONE_THREAD etc.).

I think we really need to document the different effects of returning
from main (or calling exit directly) on the one hand, and calling
pthread_exit from the main thread on the other.  Some of the thread
group behavior could be included in that.

Thanks,
Florian