Re: Reentrant argp

[M. Gerards]

> "M. Gerards" <metgerards@student.han.nl> writes:
> 
> > For the screensaver patch I sent yesterday to bug-hurd I assumed argp is 
> > reentrant. Is this really the case for GNU/Hurd? It is for GNU/Linux, but
> I'm 
> > not sure yet about GNU/Hurd.
> 
> argp uses getopt. getopt uses global variables to keep state. And as
> far as I know getopt doesn't use tricks like thread local storage.
> So it's not reentrant.

There is some comment about this in glibc, IIRC a lock is used for getopt. So I 
wonder if this locking also works for the Hurd (Marcus had doubts, I cannot 
remember the details).
 
> My hacked argp,
> http://www.lysator.liu.se/~nisse/misc/argp-standalone-1.2.tar.gz
> doesn't depend on getopt, and doesn't use global variables.

Ahh, interesting. Have you sent a patch to the glibc mailinglist? This would be 
_really_ usefull for me :)

Thanks,
Marco