From: Paul Eggert <eggert@cs.ucla.edu>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: Proposal: immediate strings
Date: Tue, 29 May 2012 00:38:09 -0700 [thread overview]
Message-ID: <4FC47CE1.6050901@cs.ucla.edu> (raw)
In-Reply-To: <4FC472E6.5020005@yandex.ru>
On 05/28/2012 11:55 PM, Dmitry Antipov wrote:
> To avoid using 'packed' attribute and speedup an inefficient access to u.dat.size
> field, it's possible to use 'ptrdiff_t X : BITS_PER_PTRDIFF_T - 2'
> bitfields - it's still wide enough to hold the values up to STRING_BYTES_BOUND.
That's not true on 32-bit hosts configured --with-wide-int.
On such hosts, a string can contain up to PTRDIFF_MAX - 1 bytes.
This proposal would lower the limit to PTRDIFF_MAX / 4 bytes.
In contrast, the proposal in
<http://lists.gnu.org/archive/html/emacs-devel/2012-05/msg00460.html>
would merely lower it to PTRDIFF_MAX - 65536 bytes.
next prev parent reply other threads:[~2012-05-29 7:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 8:44 Proposal: immediate strings Dmitry Antipov
2012-05-22 20:51 ` Miles Bader
2012-05-22 22:13 ` Paul Eggert
2012-05-24 5:17 ` Stefan Monnier
2012-05-24 5:41 ` Ken Raeburn
2012-05-24 5:50 ` Miles Bader
2012-05-24 6:08 ` Paul Eggert
2012-05-24 7:14 ` Stefan Monnier
2012-05-24 7:52 ` Paul Eggert
2012-05-24 12:51 ` Stefan Monnier
2012-05-24 16:35 ` Paul Eggert
2012-05-25 6:43 ` Dmitry Antipov
2012-05-25 7:30 ` Paul Eggert
2012-05-28 11:32 ` Dmitry Antipov
2012-05-28 14:25 ` Stefan Monnier
2012-05-29 6:55 ` Dmitry Antipov
2012-05-29 7:38 ` Paul Eggert [this message]
2012-05-29 13:33 ` Dmitry Antipov
2012-05-29 15:24 ` Paul Eggert
2012-05-31 9:28 ` Dmitry Antipov
2012-05-31 16:34 ` Paul Eggert
2012-06-06 6:14 ` Dmitry Antipov
2012-06-06 6:41 ` Paul Eggert
2012-06-06 7:29 ` Dmitry Antipov
2012-06-06 15:14 ` Eli Zaretskii
2012-06-06 21:44 ` Paul Eggert
2012-07-04 8:27 ` Old topic(s) again [was: Re: Proposal: immediate strings] Dmitry Antipov
2012-07-04 13:08 ` Stefan Monnier
2012-07-04 19:32 ` Paul Eggert
2012-05-29 7:38 ` Proposal: immediate strings Andreas Schwab
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=4FC47CE1.6050901@cs.ucla.edu \
--to=eggert@cs.ucla.edu \
--cc=dmantipov@yandex.ru \
--cc=emacs-devel@gnu.org \
--cc=monnier@iro.umontreal.ca \
/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).