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bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-t
From: |
Eli Zaretskii |
Subject: |
bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode |
Date: |
Fri, 10 Dec 2021 20:51:32 +0200 |
> Date: Fri, 10 Dec 2021 18:16:21 +0000
> Cc: 52298@debbugs.gnu.org, acm@muc.de
> From: Alan Mackenzie <acm@muc.de>
>
> > Both of these are called from the timer function. Are they using
> > with-silent-modifications?
>
> I'm pretty sure they are.
>
> I think that modify_text_properties is calling modiff_incr even when
> inhibit_modification_hooks is non-nil. I tried putting an `if' around
> that bit of the code, without any great success.
AFAIK, with-silent-modifications is supposed to prevent BUF_MODIFF
from increasing. Are you sure you see that? And what kind of 'if'
did you try to put and where?
> The main reason for all the redisplaying (which I got from
> trace-redisplay displaying "redisplay_preserve_echo_area (8)") is the
> call from detect_input_pending_run_timers in keyboard.c. It is calling
> redisplay_preserve_echo_area each time the timer triggers.
This is normal, not something you need to investigate: every time a
timer function fires, we make one more iteration through the Emacs
idle loop, and that includes a call to redisplay_preserve_echo_area.
Once again, the problem is not that redisplay is invoked, the problem
is that it doesn't exit almost immediately, after detecting that
nothing's changed.
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/05
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/08
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/09
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/09
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/09
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/10
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode,
Eli Zaretskii <=
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/10
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/11
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/11
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/11
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/11
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/11
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/12
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/12
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Alan Mackenzie, 2021/12/12
- bug#52298: 29.0.50; Frequent redisplay cycles induced by c-type-finder-timer-func timer in CC Mode, Eli Zaretskii, 2021/12/12