From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: jussi@aprikoodi.fi, emacs-devel@gnu.org
Subject: Re: [PATCH] Override Windows default Win-* key combinations when using Emacs
Date: Mon, 29 Feb 2016 11:01:31 -0800 [thread overview]
Message-ID: <56D4958B.8070300@cs.ucla.edu> (raw)
In-Reply-To: <83vb578qem.fsf@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 2418 bytes --]
On 02/29/2016 07:52 AM, Eli Zaretskii wrote:
> I was talking about systems other than Windows. Do we know which ones
> of them still use the non-getaddrinfo code?
The Gnulib documentation mentions HP-UX 11.11, IRIX 6.5, OSF/1 5.1,
Solaris 7, Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS. Of the
non-MS-Windows ports, Emacs should run on HP-UX 11, Solaris 7, and
(assuming --with-wide-int) IRIX 6.5. Of these only HP-UX 11.11 (aka
HP-UX 11i) is still a viable platform. The base system lacks
getaddrinfo, but there is an optional addon to support getaddrinfo (it's
part of IPv6 support)
> I see that we have calls to something named res_init there, and we
> even have a configure-time test for that. What is that about? Gnulib
> doesn't have that, and it's certainly not for the MS-Windows build.
res_init originally had to do with the ancient (pre-2000) BIND
interfaces that were not thread-safe. Emacs doesn't use those so we
don't need to worry about them. More recently, res_init was used to kick
glibc into re-reading /etc/resolv.conf. That has been obsolete for years
too, with the emergence of nscd. Nowadays calling res_init merely slows
Emacs down so Emacs should stop doing it, and I installed the attached
patch into master.
> The current w32 code in Emacs wraps each network-related function with
> a wrapper that tracks sockets and file descriptors they use,
> translates socket errors to errno values, and does other important
> stuff. The code also arranges for dynamically loading the socket
> library only when actually needed. So replacing just one function will
> certainly not work well, and replacing them all sounds like a lot of
> work for very little gain. So I think a better way forward would be to
> implement getaddrinfo wrapper in w32.c, complete with the fallback we
> have in process.c (and maybe also borrowing some ideas from Gnulib).
Gnulib also tracks file descriptors in its substitute functions, I
presume for similar reasons. At some point perhaps this should be
unified with what Emacs does, but obviously this is not high priority.
> When this is done, we can install your patch for whatever other
> systems which still don't have getaddrinfo (if there are such systems
> that we still support). Writing such a getaddrinfo wrapper is easy,
> and I expect it to be done soon enough, so please wait with your patch
> until then.
Sounds good.
[-- Attachment #2: 0001-Stop-calling-res_init.patch --]
[-- Type: application/x-patch, Size: 5456 bytes --]
next prev parent reply other threads:[~2016-02-29 19:01 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-05 12:51 [PATCH] Override Windows default Win-* key combinations when using Emacs Jussi Lahdenniemi
2016-01-05 13:54 ` Herring, Davis
2016-01-05 17:05 ` Eli Zaretskii
2016-01-05 19:32 ` Jussi Lahdenniemi
2016-01-05 17:05 ` Eli Zaretskii
2016-01-05 19:03 ` Rasmus
2016-01-05 19:17 ` Eli Zaretskii
2016-01-05 19:31 ` Jussi Lahdenniemi
[not found] ` <<83d1tf4z0h.fsf@gnu.org>
2016-01-05 19:45 ` Drew Adams
2016-01-05 19:41 ` Jussi Lahdenniemi
2016-01-05 20:01 ` Eli Zaretskii
2016-01-09 19:58 ` Jussi Lahdenniemi
2016-01-11 18:54 ` Eli Zaretskii
2016-01-12 11:16 ` Jussi Lahdenniemi
2016-01-12 15:08 ` covici
2016-01-13 5:07 ` Jussi Lahdenniemi
2016-01-12 15:54 ` Eli Zaretskii
2016-01-13 5:31 ` Jussi Lahdenniemi
2016-01-13 15:49 ` Eli Zaretskii
2016-01-13 9:16 ` Jussi Lahdenniemi
2016-01-13 11:28 ` Jussi Lahdenniemi
2016-01-13 15:57 ` Eli Zaretskii
2016-01-14 12:49 ` Jussi Lahdenniemi
2016-01-14 17:10 ` Jussi Lahdenniemi
2016-01-14 18:07 ` Eli Zaretskii
2016-01-14 18:15 ` Eli Zaretskii
2016-01-15 6:56 ` Jussi Lahdenniemi
2016-01-15 7:52 ` Jussi Lahdenniemi
2016-01-15 8:08 ` Windows 9X crash (was: [PATCH] Override Windows default Win-* key combinations when using Emacs) Eli Zaretskii
2016-01-15 9:35 ` Windows 9X crash Jussi Lahdenniemi
2016-01-15 10:18 ` Eli Zaretskii
2016-01-15 10:31 ` Fabrice Popineau
2016-01-15 10:33 ` Jussi Lahdenniemi
2016-01-16 9:15 ` Eli Zaretskii
2016-01-15 9:47 ` Windows 9X crash (was: [PATCH] Override Windows default Win-* key combinations when using Emacs) Fabrice Popineau
2016-01-15 9:56 ` Windows 9X crash Jussi Lahdenniemi
2016-01-15 10:19 ` Eli Zaretskii
2016-01-15 9:23 ` [PATCH] Override Windows default Win-* key combinations when using Emacs Yuri Khan
2016-01-16 9:58 ` Eli Zaretskii
2016-01-16 11:00 ` Jussi Lahdenniemi
2016-01-16 11:41 ` Eli Zaretskii
2016-02-03 13:59 ` Jussi Lahdenniemi
2016-02-03 15:42 ` Eli Zaretskii
2016-02-26 10:55 ` Eli Zaretskii
2016-02-26 10:59 ` Jussi Lahdenniemi
2016-02-27 11:34 ` Eli Zaretskii
2016-02-28 8:42 ` Paul Eggert
2016-02-28 15:50 ` Eli Zaretskii
2016-02-28 20:03 ` Paul Eggert
2016-02-28 20:10 ` Eli Zaretskii
2016-02-28 23:27 ` Paul Eggert
2016-02-29 3:31 ` Eli Zaretskii
2016-02-29 7:07 ` Paul Eggert
2016-02-29 15:52 ` Eli Zaretskii
2016-02-29 19:01 ` Paul Eggert [this message]
2016-03-05 10:16 ` Eli Zaretskii
2016-03-08 2:57 ` Paul Eggert
2016-03-08 4:46 ` Clément Pit--Claudel
2016-02-28 23:33 ` John Wiegley
2016-02-27 2:11 ` Lars Ingebrigtsen
2016-02-27 7:47 ` Eli Zaretskii
2016-02-28 4:40 ` Lars Ingebrigtsen
2016-01-13 15:53 ` Eli Zaretskii
[not found] <<568BBC58.50702@aprikoodi.fi>
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