Futex error handling

[Rich Felker]

On Wed, Sep 17, 2014 at 12:59:18PM -0700, Roland McGrath wrote:
> > I've asked Michael about the current status and offered my help in case
> > we also want to document more high-level properties of futex, like how
> > to use it properly.
> 
> Thanks for taking this on.  The futex(7) man page seems like the right
> place for that, and it's rather thin now.

I would really like to expose futex(2) as a public interface and see
it documented there.. :-) I know that's something of a separate topic,
but it seems like a good time to discuss since the documentation is
going to be worked on, and since C11 atomics make having futex()
available to applications A LOT more desirable.

Rich