From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Ken Brown <kbrown@cornell.edu>
Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
Subject: Re: New emacs maintainer for cygwin
Date: Wed, 20 May 2009 11:22:15 -0400 [thread overview]
Message-ID: <jwvzld7er9b.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <4A136D6F.20903@cornell.edu> (Ken Brown's message of "Tue, 19 May 2009 22:39:43 -0400")
> Could you elaborate on this? I don't know anything about USE_LSB_TAG. All
grep for USE_LSB_TAG in src/lisp.h. It's quite likely that Cygwin uses
it already (ideally, all systems should use it). What it does is it
makes Emacs use the lower 3bits for tags rather than the higher 3bits.
The advantage being that ELisp pointers can reach any part of the memory
rather than only the lower 512MB. The downside is that all objects need
to be aligned on an 8byte boundary, and on some systems it's difficult
to get this guarantee.
Stefan
next prev parent reply other threads:[~2009-05-20 15:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-15 13:41 New emacs maintainer for cygwin Ken Brown
2009-05-15 14:16 ` Eli Zaretskii
2009-05-15 14:35 ` Ken Brown
2009-05-15 14:42 ` Lennart Borgman
2009-05-15 14:55 ` Chong Yidong
2009-05-17 4:01 ` Stefan Monnier
2009-05-20 0:21 ` Ken Brown
2009-05-20 2:14 ` Stefan Monnier
2009-05-20 2:39 ` Ken Brown
2009-05-20 15:22 ` Stefan Monnier [this message]
2009-05-20 17:37 ` Ken Brown
-- strict thread matches above, loose matches on Subject: below --
2009-05-20 8:05 Angelo Graziosi
2009-05-20 12:30 ` Ken Brown
2009-05-20 12:46 ` Angelo Graziosi
2009-05-20 22:19 Angelo Graziosi
2009-05-20 22:39 ` Ken Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=jwvzld7er9b.fsf-monnier+emacs@gnu.org \
--to=monnier@iro.umontreal.ca \
--cc=eliz@gnu.org \
--cc=emacs-devel@gnu.org \
--cc=kbrown@cornell.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).