From: Helmut Eller <eller.helmut@gmail.com>
To: "Gerd Möllmann" <gerd@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: scratch/igc fe90d556834: Make glyphs ambiguous roots
Date: Mon, 29 Jul 2024 08:21:29 +0200 [thread overview]
Message-ID: <87h6c8lnva.fsf@gmail.com> (raw)
In-Reply-To: <20240728174212.BDB66C41F13@vcs2.savannah.gnu.org> (Gerd Moellmann's message of "Sun, 28 Jul 2024 13:42:12 -0400 (EDT)")
On Sun, Jul 28 2024, Gerd Moellmann wrote:
> We cannot trace glyphs in fix_window because we don't have exclusive
> access to glyph_rows and glyphs. (An optimal solution would allocate
> glyphs from MPS, and change data structures in a way that everything
> needed (row->used, row->enabled_p) is available for the scanner.)
I don't understand this. Glyph_rows aren't allocated in MPS-managed
memory so there are no memory barriers to worry about. While fix_frame
runs, all other threads are suspended. So why don't we have exclusive
access? And why is it not a problem for FRAME_FONT, FRAME_DISPLAY_INFO,
etc?
next parent reply other threads:[~2024-07-29 6:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <172218853212.17772.9043342656088870281@vcs2.savannah.gnu.org>
[not found] ` <20240728174212.BDB66C41F13@vcs2.savannah.gnu.org>
2024-07-29 6:21 ` Helmut Eller [this message]
2024-07-29 7:21 ` scratch/igc fe90d556834: Make glyphs ambiguous roots Gerd Möllmann
2024-07-29 9:21 ` Helmut Eller
2024-07-29 10:19 ` Gerd Möllmann
2024-07-29 13:12 ` Gerd Möllmann
2024-07-29 14:01 ` Helmut Eller
2024-07-29 14:12 ` Gerd Möllmann
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87h6c8lnva.fsf@gmail.com \
--to=eller.helmut@gmail.com \
--cc=emacs-devel@gnu.org \
--cc=gerd@gnu.org \
/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 external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.