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From: "Stefan Monnier" <monnier+gnu/emacs@RUM.cs.yale.edu>
Cc: "Stefan Monnier" <monnier+gnu/emacs@rum.cs.yale.edu>,
	Helmut Eller <helmut@212186011228.11.tuwien.teleweb.at>,
	emacs-devel@gnu.org
Subject: Re: New patch for server sockets and datagram (UDP) support.
Date: Fri, 08 Mar 2002 16:03:14 -0500	[thread overview]
Message-ID: <200203082103.g28L3EZ25366@rum.cs.yale.edu> (raw)
In-Reply-To: 5xit866alo.fsf@kfs2.cua.dk

> "Stefan Monnier" <monnier+gnu/emacs@rum.cs.yale.edu> writes:
> 
> > > > > The following special call returns t iff a given KEY VALUE
> > > > > pair is supported on this system:
> > > > >   (make-network-process :feature KEY VALUE)  */)
> > > > 
> > > > Hmm... this looks a bit strange.  Can you give some examples?
> > > > Especially, what do you supply as VALUE?
> > > > 
> > > 
> > > It simply tests whether using KEY VALUE as arguments to make-network-stream
> > > is supported, e.g. :datagram t, :nowait t, :family 'local.
> > 
> > I suggest to use `subfeatures' for that:
> > 
> >    (provide 'network '(:datagram :nowait :family ...))
> 
> I don't want to invent something new here if it isn't needed, but the
> problem here is that the proper setings here are determined at
> compile-time, so it's not just a question of putting a (provide...)
> line somewhere in a lisp file -- since that information is not
> available to lisp [that's why I provided the :feature interface].

Then put the call to `feature' in the C code.

> > so you can then check
> > 
> >    (featurep 'network :datagram)
> > 
> But how do you test for availability of :family 'local ?

Whichever way you feel like, e.g. (featurep 'network :family:local).
I guess I just don't understand the question.  Also, it's often
good enough to just call make-network-process and see if it succeeds.
You only really need to provide/use `featurep' in order to know whether
something would be ignored or not.


	Stefan


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  reply	other threads:[~2002-03-08 21:03 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <m2u1sa7819.fsf@xaital.online-marketwatch.com>
2002-02-21 23:45 ` Non-blocking open-network-stream Kim F. Storm
2002-02-22 16:04   ` Stefan Monnier
2002-02-25 22:38   ` Kim F. Storm
2002-02-26 22:46     ` Helmut Eller
2002-02-27 11:59       ` Kim F. Storm
2002-02-28  4:08         ` Richard Stallman
2002-03-01  0:21           ` Kim F. Storm
2002-03-01  8:01             ` Juanma Barranquero
2002-03-01 10:50               ` Kim F. Storm
2002-03-01 17:10                 ` Pavel Janík
2002-03-01 21:23             ` Richard Stallman
2002-03-07  0:08               ` New patch for server sockets and datagram (UDP) support Kim F. Storm
2002-03-07 10:56                 ` Kim F. Storm
2002-03-07 11:39                   ` Alex Schroeder
2002-03-07 12:39                     ` Kim F. Storm
2002-03-07 14:51                       ` Alex Schroeder
2002-03-08 21:06                       ` Richard Stallman
2002-03-13 15:56                         ` Kim F. Storm
2002-03-13 23:19                           ` Final(?) " Kim F. Storm
2002-03-14  0:50                             ` Al Petrofsky
2002-03-14  9:30                               ` Kim F. Storm
2002-03-14 12:42                               ` Richard Stallman
2002-03-14 13:35                                 ` Kim F. Storm
2002-03-17 22:02                             ` I have installed the " Kim F. Storm
2002-03-07 15:18                   ` New " Helmut Eller
2002-03-07 16:09                     ` Kim F. Storm
2002-03-07 17:32                       ` Helmut Eller
2002-03-07 23:58                         ` Kim F. Storm
2002-03-08  7:38                           ` Helmut Eller
2002-03-08  9:13                             ` Kim F. Storm
2002-03-08 11:16                               ` Helmut Eller
2002-03-08 16:36                               ` Stefan Monnier
2002-03-08 20:57                                 ` Kim F. Storm
2002-03-08 21:03                                   ` Stefan Monnier [this message]
2002-03-08 21:07                             ` Richard Stallman
2002-03-13 15:12                               ` Kim F. Storm
2002-03-07 12:54                 ` Mario Lang
2002-03-07 12:58                   ` Kim F. Storm
2002-03-08  9:09                 ` Richard Stallman
2002-03-08  9:35                   ` Kim F. Storm
2002-03-08 11:04                   ` Helmut Eller
2002-03-02  7:59             ` Non-blocking open-network-stream Helmut Eller
2002-03-03  0:12               ` Kim F. Storm
2002-03-03 10:46                 ` Helmut Eller
2002-03-03 16:44                 ` Mario Lang
2002-03-03 14:39               ` Richard Stallman

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