sem_trywait returns EAGAIN (rather than returning -1 and setting errno)

[Andrew T. Schnable]

cool - I misunderstood.  I will try and work up a patch...

Andy

----- Original Message -----
From: "Christopher Faylor" <cgf@redhat.com>
To: <cygwin@cygwin.com>
Sent: Tuesday, February 26, 2002 7:33 PM
Subject: Re: sem_trywait returns EAGAIN (rather than returning -1 and
setting errno)


> On Tue, Feb 26, 2002 at 07:14:35PM -0500, Andrew T. Schnable wrote:
> >You have a point regarding errno, but unfortunately, this is how the
> >standard
> >is written. If it's intentional that cygwin deviate from posix 1.b, I'm
fine
> >with that - I can code accordingly.  FYI - I went to the
> >
> >    The Open Group Base Specifications Issue 6
> >    technically identical to IEEE Std 1003.1-2001
> >    Copyright ? 2001 The IEEE and The Open Group
> >
> >(because this was easier to find on-line and it should be close enough,)
> >and snipped this fragment from the sem_trywait man page...
>
> I wasn't referring to the specific case that you reported.  I was just
> referring to my grep which found many cases where an errno value was
> being returned.
>
> As Robert indicated, in the vast majority of those cases, this was, in
> fact, the right thing to do.
>
> It's apparently not the right thing to do in the case of sem_trywait, so
> a patch will be required:  http://cygwin.com/contrib.html .
>
> cgf
>
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