From: Stephen Berman <stephen.berman@gmx.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 34138@debbugs.gnu.org, politza@hochschule-trier.de, tsdh@gnu.org
Subject: bug#34138: 27.0.50; Delayed display of PDF file images
Date: Wed, 23 Jan 2019 18:21:40 +0100 [thread overview]
Message-ID: <87bm47i923.fsf@gmx.net> (raw)
In-Reply-To: <83lg3b8i8a.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 23 Jan 2019 18:13:41 +0200")
On Wed, 23 Jan 2019 18:13:41 +0200 Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Stephen Berman <stephen.berman@gmx.net>
>> Cc: politza@hochschule-trier.de, rudalics@gmx.at, 34138@debbugs.gnu.org,
>> tsdh@gnu.org
>> Date: Tue, 22 Jan 2019 23:00:01 +0100
>>
>> > So could you please add the following 2 lines:
>> >
>> > fprintf (stderr, "run_window_configuration_change_hook: %p\n", f);
>> > fflush (stderr);
>> >
>> > into the very beginning of run_window_configuration_change_hook (it is
>> > in src/window.c), compile both versions of Emacs, and run the same
>> > scenario again. Then please show the traces, where the above message
>> > should be visible somewhere among the other trace messages.
>>
>> Attached. It's striking that in the emacs-26 trace
>> run_window_configuration_change_hook is called just once, before the PDF
>> (image) is displayed, while in the emacs-master trace it's called once
>> before the (raw) PDF is displayed and again immediately after that, but
>> not again when the display changes to the image. Does that accord with
>> your theory?
>
> Yes, sort of. (The first invocation of
> run_window_configuration_change_hook is AFAIU not relevant to the
> issue at hand, it's about a different buffer, called "manual". Only
> the second call is relevant.
"manual" is the Dired buffer of the directory containing the PDF file.
> )
>
> Here's my theory: [...]
Thanks, this sounds plausible.
>> This time with emacs-master about 25 seconds elapsed
>> between the raw PDF appearing in the buffer and the image appearing
>> (again without keyboard intervention). Immediately after that, the
>> trace stopped for a number of seconds (I didn't time it but I guess
>> 5-10), then it printed:
>> redisplay_preserve_echo_area (8)
>> redisplay_internal 0
>
> These two traces are not in the trace you posted, right? Because the
> Emacs 27 trace ends with this:
>
>> redisplay_preserve_echo_area (9)
>> redisplay_internal 0
>> 0x2a01550 (R-admin.pdf): same window start
>> 0x2a01550 (R-admin.pdf): 1
>
> which I believe is the first redisplay cycle which shows the image.
> Right?
Yes. The trace I posted ends at that point, but as I wrote above, after
5-10 seconds of no further traces, the above two lines appeared, and
then I killed the buffer. I mentioned that in case it might be
relevant. Sorry for the confusion.
>> and then I killed the buffer. As the emacs-26 trace shows, after the
>> PDF image appeared (which it did without the raw PDF being displayed),
>> the trace rapidly produced another 50 lines of output (included in the
>> attachment) before pausing, after which I killed emacs.
>
> Most of the traces come from the code that invokes timers, so I think
> you have timers running which eventually trigger redisplay, something
> that doesn't happen on Andreas's machine. That might explain why you
> see the image after a short delay, while Andreas needs to manually
> trigger redisplay for that.
Ah, that seems likely. I do have several timers running, I'll see if I
can deactivate them and whether that results in no image display.
Steve Berman
next prev parent reply other threads:[~2019-01-23 17:21 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-19 21:13 bug#34138: 27.0.50; Delayed display of PDF file images Stephen Berman
2019-01-20 9:17 ` martin rudalics
2019-01-20 11:04 ` Andreas Politz
2019-01-20 14:19 ` martin rudalics
2019-01-20 11:18 ` Stephen Berman
2019-01-20 14:20 ` martin rudalics
2019-01-20 14:55 ` Stephen Berman
2019-01-20 15:32 ` Eli Zaretskii
2019-01-20 15:51 ` Stephen Berman
2019-01-20 16:08 ` Eli Zaretskii
2019-01-20 16:31 ` Stephen Berman
2019-01-20 16:50 ` Eli Zaretskii
2019-01-20 17:14 ` Stephen Berman
2019-01-20 17:42 ` Eli Zaretskii
2019-01-20 20:45 ` Stephen Berman
2019-01-21 15:58 ` Eli Zaretskii
2019-01-21 16:13 ` Stephen Berman
2019-01-21 16:36 ` Eli Zaretskii
2019-01-21 18:17 ` Stephen Berman
2019-01-21 18:42 ` Eli Zaretskii
2019-01-21 19:14 ` Andreas Politz
2019-01-21 19:47 ` Eli Zaretskii
2019-01-21 22:27 ` Stephen Berman
2019-01-22 16:25 ` Eli Zaretskii
2019-01-22 22:00 ` Stephen Berman
2019-01-23 14:31 ` Stephen Berman
2019-01-23 16:26 ` Eli Zaretskii
2019-01-23 17:22 ` Stephen Berman
2019-01-23 16:13 ` Eli Zaretskii
2019-01-23 17:21 ` Stephen Berman [this message]
2019-01-23 22:20 ` Stephen Berman
2019-01-23 18:27 ` martin rudalics
2019-01-23 18:39 ` Eli Zaretskii
2019-01-24 9:08 ` martin rudalics
2019-01-24 14:26 ` Eli Zaretskii
2019-01-24 19:41 ` Andreas Politz
2019-01-25 9:44 ` martin rudalics
2019-01-26 9:19 ` martin rudalics
2019-01-26 10:52 ` Eli Zaretskii
2019-01-26 15:07 ` martin rudalics
2019-01-26 15:33 ` Stephen Berman
2019-02-02 9:28 ` martin rudalics
2019-02-02 9:38 ` Andreas Politz
2019-02-19 8:47 ` martin rudalics
2019-02-02 12:59 ` Stephen Berman
2019-02-19 8:40 ` martin rudalics
2019-03-30 2:56 ` Noam Postavsky
2019-04-23 9:22 ` martin rudalics
2019-02-02 9:33 ` Andreas Politz
2019-02-02 9:37 ` martin rudalics
2019-01-21 20:33 ` Stephen Berman
2019-01-21 20:35 ` Eli Zaretskii
2019-01-21 20:43 ` Stephen Berman
2019-01-21 21:28 ` Andreas Politz
2019-01-21 18:47 ` martin rudalics
2019-01-21 19:19 ` Andreas Politz
2019-01-21 20:33 ` Stephen Berman
2019-01-20 17:55 ` martin rudalics
2019-01-20 20:45 ` Stephen Berman
2019-01-21 7:52 ` martin rudalics
2019-01-21 15:20 ` Stephen Berman
2019-01-21 6:11 ` Tassilo Horn
2019-01-21 7:52 ` martin rudalics
2019-01-21 15:20 ` Stephen Berman
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