From: Eli Zaretskii <eliz@gnu.org>
To: Ryan Johnson <scovich@gmail.com>
Cc: 25119@debbugs.gnu.org
Subject: bug#25119: Acknowledgement (Hard freeze when switching to indirect buffer)
Date: Mon, 05 Dec 2016 20:44:36 +0200 [thread overview]
Message-ID: <83k2bejjvv.fsf@gnu.org> (raw)
In-Reply-To: <37b7ce44-f357-24e1-3c56-e18169758b6e@gmail.com> (message from Ryan Johnson on Mon, 5 Dec 2016 10:37:02 -0700)
> From: Ryan Johnson <scovich@gmail.com>
> Date: Mon, 5 Dec 2016 10:37:02 -0700
>
> (gdb) xbacktrace
> "read-key-sequence-vector" (0x57f89050)
> 0x4872440 PVEC_COMPILED
> "funcall" (0x57f89190)
> "read-key" (0x57f89498)
> "read-char-choice" (0x57f89600)
> "ask-user-about-supersession-threat" (0x57f897b8)
> "put-text-property" (0x57f8bae8)
> "jit-lock-fontify-now" (0x57f8bc78)
> "jit-lock-function" (0x57f8be38)
> "redisplay_internal (C function)" (0xb856a8)
This looks like Emacs asking you whether to steal the lock from
another Emacs session that is editing the same file.
> The hang usually occurs when I switch to an indirect buffer I've not
> used in a while (overnight, in this case), and on a shared machine where
> people often run memory-intensive workloads. The backtrace above
> suggests that the file has been modified outside emacs in the meantime,
> which is probably true, since I frequently use patch queues.
>
> I start to suspect that there's some sort of race here, where switching
> to the buffer is slow (perhaps due to page faults) and a different
> thread tries to process subsequent keystrokes, which triggers the "$FILE
> changed on disk; really edit the buffer?" message while the mini-buffer
> is still tied up with the "switching to..." message.
What other thread did you have in mind? Emacs does all this in a
single thread.
> I will admit I never tried typing "y" or "n" in response to the
> hang... I'll be sure to try that next time.
Yes, a good idea.
Also, perhaps you could try a newer version of Emacs (25.1), maybe
this problem is already fixed there.
Thanks.
next prev parent reply other threads:[~2016-12-05 18:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-05 16:46 bug#25119: Hard freeze when switching to indirect buffer Ryan Johnson
[not found] ` <handler.25119.B.148095640113649.ack@debbugs.gnu.org>
2016-12-05 17:37 ` bug#25119: Acknowledgement (Hard freeze when switching to indirect buffer) Ryan Johnson
2016-12-05 18:44 ` Eli Zaretskii [this message]
2016-12-05 20:14 ` Ryan Johnson
2016-12-05 20:25 ` Eli Zaretskii
2016-12-08 2:00 ` Ryan Johnson
2018-05-09 23:12 ` bug#25119: Hard freeze when switching to indirect buffer Noam Postavsky
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