From: Alan Third <alan@idiocy.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: konrad.podczeck@univie.ac.at, 42406@debbugs.gnu.org
Subject: bug#42406: Mouse-wheel scrolling can be flickering
Date: Sun, 13 Dec 2020 19:46:04 +0000 [thread overview]
Message-ID: <X9ZvfMy13DlOSAkp@breton.holly.idiocy.org> (raw)
In-Reply-To: <83sg89cyrq.fsf@gnu.org>
On Sun, Dec 13, 2020 at 09:05:29PM +0200, Eli Zaretskii wrote:
> > Date: Fri, 11 Dec 2020 20:37:56 +0000
> > From: Alan Third <alan@idiocy.org>
> > Cc: konrad.podczeck@univie.ac.at, 42406@debbugs.gnu.org
> >
> > > Any pointers to the code which causes all the frames to be updated in
> > > C-v/M-v case?
> >
> > I don't know. I'm looking at redisplay_internal in a debugger and I
> > can see that consider_all_windows_p is true, which will be because
> > windows_or_buffers_changed == 2 == REDISPLAY_SOME or because
> > update_mode_lines == 42.
> >
> > I can't find anywhere that sets update_mode_lines to 42...
>
> wset_update_mode_line does it, so any caller of that function would.
>
> But where do you see the value of 42 being tested?
I've got two frames open, I set up a breakpoint in
ns_clear_under_internal_border and scroll. When I hit the breakpoint
for the frame I don't expect to be updated I get this backtrace:
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
* frame #0: 0x00000001001eb35f temacs`ns_clear_under_internal_border(f=0x000000010711cea0) at nsterm.m:3036:7 [opt]
frame #1: 0x0000000100029cd5 temacs`redisplay_internal at xdisp.c:16030:21 [opt]
frame #2: 0x00000001000cb1d5 temacs`read_char(commandflag=1, map=0x0000000107d635c3, prev_event=0x0000000000000000, used_mouse_menu=0x00007ffeefbff36b, end_time=0x0000000000000000) at keyboard.c:2496:6 [opt]
frame #3: 0x00000001000c8e72 temacs`read_key_sequence(keybuf=<unavailable>, prompt=0x0000000000000000, dont_downcase_last=<unavailable>, can_return_switch_frame=<unavailable>, fix_current_buffer=<unavailable>, prevent_redisplay=<unavailable>) at keyboard.c:9483:12 [opt]
frame #4: 0x00000001000c756c temacs`command_loop_1 at keyboard.c:1353:15 [opt]
frame #5: 0x000000010014dd17 temacs`internal_condition_case(bfun=(temacs`command_loop_1 at keyboard.c:1239), handlers=0x0000000000000090, hfun=(temacs`cmd_error at keyboard.c:922)) at eval.c:1415:25 [opt]
frame #6: 0x00000001000d7670 temacs`command_loop_2(ignore=<unavailable>) at keyboard.c:1094:11 [opt]
frame #7: 0x000000010014d53b temacs`internal_catch(tag=0x000000000000c9f0, func=(temacs`command_loop_2 at keyboard.c:1090), arg=0x0000000000000000) at eval.c:1176:25 [opt]
frame #8: 0x0000000100212935 temacs`command_loop.cold.1 + 69
frame #9: 0x00000001000c6633 temacs`command_loop at keyboard.c:1072:2 [opt]
frame #10: 0x00000001000c6563 temacs`recursive_edit_1 at keyboard.c:720:9 [opt]
frame #11: 0x00000001000c67bb temacs`Frecursive_edit at keyboard.c:789:3 [opt]
frame #12: 0x00000001000c5343 temacs`main(argc=<unavailable>, argv=0x00007ffeefbff810) at emacs.c:2054:3 [opt]
frame #13: 0x00007fff712cd3d5 libdyld.dylib`start + 1* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
* frame #0: 0x00000001001eb35f temacs`ns_clear_under_internal_border(f=0x000000010711cea0) at nsterm.m:3036:7 [opt]
frame #1: 0x0000000100029cd5 temacs`redisplay_internal at xdisp.c:16030:21 [opt]
frame #2: 0x00000001000cb1d5 temacs`read_char(commandflag=1, map=0x0000000107d635c3, prev_event=0x0000000000000000, used_mouse_menu=0x00007ffeefbff36b, end_time=0x0000000000000000) at keyboard.c:2496:6 [opt]
frame #3: 0x00000001000c8e72 temacs`read_key_sequence(keybuf=<unavailable>, prompt=0x0000000000000000, dont_downcase_last=<unavailable>, can_return_switch_frame=<unavailable>, fix_current_buffer=<unavailable>, prevent_redisplay=<unavailable>) at keyboard.c:9483:12 [opt]
frame #4: 0x00000001000c756c temacs`command_loop_1 at keyboard.c:1353:15 [opt]
frame #5: 0x000000010014dd17 temacs`internal_condition_case(bfun=(temacs`command_loop_1 at keyboard.c:1239), handlers=0x0000000000000090, hfun=(temacs`cmd_error at keyboard.c:922)) at eval.c:1415:25 [opt]
frame #6: 0x00000001000d7670 temacs`command_loop_2(ignore=<unavailable>) at keyboard.c:1094:11 [opt]
frame #7: 0x000000010014d53b temacs`internal_catch(tag=0x000000000000c9f0, func=(temacs`command_loop_2 at keyboard.c:1090), arg=0x0000000000000000) at eval.c:1176:25 [opt]
frame #8: 0x0000000100212935 temacs`command_loop.cold.1 + 69
frame #9: 0x00000001000c6633 temacs`command_loop at keyboard.c:1072:2 [opt]
frame #10: 0x00000001000c6563 temacs`recursive_edit_1 at keyboard.c:720:9 [opt]
frame #11: 0x00000001000c67bb temacs`Frecursive_edit at keyboard.c:789:3 [opt]
frame #12: 0x00000001000c5343 temacs`main(argc=<unavailable>, argv=0x00007ffeefbff810) at emacs.c:2054:3 [opt]
frame #13: 0x00007fff712cd3d5 libdyld.dylib`start + 1
Which I've not found very useful. I had a look at redisplay_internal
to see if I could work out why the frame is being updated, but I
can't.
I looked at some of the variables in redisplay_internal that are
involved in making the decision whether to check all frames:
(lldb) p update_mode_lines;
(int) $0 = 42
(lldb) p windows_or_buffers_changed
(int) $1 = 2
but I have no idea if this is useful at all.
Is there anything specific you'd like me to check?
--
Alan Third
next prev parent reply other threads:[~2020-12-13 19:46 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 15:36 bug#42406: Mouse-wheel scrolling can be flickering Konrad Podczeck
2020-07-19 13:33 ` Alan Third
2020-07-19 20:29 ` Konrad Podczeck
2020-07-22 20:16 ` Alan Third
2020-07-30 10:30 ` Konrad Podczeck
2020-08-01 13:12 ` Alan Third
2020-10-10 9:51 ` Alan Third
2020-10-10 14:07 ` Konrad Podczeck
2020-12-10 17:14 ` Konrad Podczeck
2020-12-10 22:10 ` Alan Third
2020-12-11 8:18 ` Eli Zaretskii
2020-12-11 20:37 ` Alan Third
2020-12-13 19:05 ` Eli Zaretskii
2020-12-13 19:46 ` Alan Third [this message]
2020-12-14 0:20 ` Konrad Podczeck
2020-12-14 15:47 ` martin rudalics
2020-12-14 20:46 ` Konrad Podczeck
2020-12-15 7:58 ` martin rudalics
2020-12-15 13:27 ` Konrad Podczeck
2020-12-15 13:51 ` martin rudalics
2020-12-15 14:06 ` Konrad Podczeck
2020-12-15 15:20 ` martin rudalics
2020-12-15 19:31 ` Konrad Podczeck
2020-12-15 19:45 ` Eli Zaretskii
2020-12-15 19:52 ` Konrad Podczeck
2020-12-15 20:05 ` Eli Zaretskii
2020-12-15 20:12 ` Konrad Podczeck
2020-12-15 20:32 ` Eli Zaretskii
2020-12-16 8:46 ` martin rudalics
2020-12-16 15:58 ` Eli Zaretskii
2020-12-16 8:46 ` martin rudalics
2020-12-16 16:00 ` Eli Zaretskii
2020-12-16 16:53 ` martin rudalics
2020-12-16 17:18 ` Eli Zaretskii
2020-12-16 18:51 ` martin rudalics
2020-12-16 19:35 ` Eli Zaretskii
2020-12-17 7:29 ` martin rudalics
2020-12-16 20:29 ` Konrad Podczeck
2020-12-17 7:29 ` martin rudalics
2020-12-17 10:19 ` Konrad Podczeck
2020-12-17 13:21 ` martin rudalics
2020-12-17 14:44 ` Eli Zaretskii
2020-12-17 15:13 ` martin rudalics
2020-12-17 16:54 ` Eli Zaretskii
2020-12-17 17:34 ` martin rudalics
2020-12-17 18:01 ` Eli Zaretskii
2020-12-17 23:19 ` martin rudalics
2020-12-18 7:50 ` Eli Zaretskii
2020-12-18 8:39 ` martin rudalics
2020-12-18 11:45 ` Eli Zaretskii
2020-12-18 13:57 ` martin rudalics
2020-12-19 10:04 ` Eli Zaretskii
2020-12-17 16:40 ` Konrad Podczeck
2020-12-17 17:05 ` martin rudalics
2020-12-17 17:24 ` Eli Zaretskii
2020-12-17 14:04 ` Eli Zaretskii
2020-12-17 15:13 ` martin rudalics
2020-12-17 16:49 ` Eli Zaretskii
2020-12-17 17:34 ` martin rudalics
2020-12-16 21:31 ` Alan Third
2020-12-16 23:53 ` Konrad Podczeck
2020-12-15 16:52 ` Eli Zaretskii
2020-12-15 17:14 ` martin rudalics
2020-12-15 18:35 ` Eli Zaretskii
2020-12-14 16:17 ` Eli Zaretskii
2020-12-14 20:48 ` Konrad Podczeck
2020-12-14 21:01 ` Eli Zaretskii
2020-12-14 16:12 ` Eli Zaretskii
2020-12-14 20:25 ` Alan Third
2020-12-14 20:54 ` Eli Zaretskii
2020-12-14 21:14 ` Alan Third
2020-12-15 7:59 ` martin rudalics
2020-12-15 17:38 ` Alan Third
2020-12-15 18:54 ` martin rudalics
2020-12-15 19:50 ` Alan Third
2020-12-16 8:46 ` martin rudalics
2020-12-16 21:35 ` Alan Third
2020-12-17 17:47 ` Stefan Monnier
2020-12-17 18:16 ` Eli Zaretskii
2020-12-17 19:45 ` Stefan Monnier
2020-12-17 20:36 ` Eli Zaretskii
2020-12-17 21:07 ` Stefan Monnier
2020-12-18 7:43 ` Eli Zaretskii
2020-12-18 16:22 ` Stefan Monnier
2020-12-18 20:42 ` Eli Zaretskii
2020-12-18 23:12 ` Stefan Monnier
2020-12-19 7:44 ` Eli Zaretskii
2020-12-17 19:56 ` Stefan Monnier
2020-12-17 20:35 ` Stefan Monnier
2020-12-17 20:58 ` Eli Zaretskii
2020-12-17 21:24 ` Stefan Monnier
2020-12-18 7:46 ` Eli Zaretskii
2020-12-18 14:41 ` Stefan Monnier
2020-12-17 20:47 ` Eli Zaretskii
2020-12-17 23:19 ` martin rudalics
2020-12-17 23:24 ` Stefan Monnier
2020-12-17 23:29 ` Stefan Monnier
2020-12-18 7:56 ` martin rudalics
2021-05-21 10:23 ` bug#42406: macOS metal rendering engine in mac port Konrad Podczeck
2021-05-21 15:33 ` Aaron Jensen
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