GNU bug report logs - #21965
24.5; Emacs freezes when canceling at open file

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Package: emacs;

Reported by: Maneesh Yadav <maneeshkyadav <at> gmail.com>

Date: Fri, 20 Nov 2015 21:21:02 UTC

Severity: normal

Found in version 24.5

Done: Stefan Kangas <stefan <at> marxist.se>

Bug is archived. No further changes may be made.

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From: John Wiegley <jwiegley <at> gmail.com>
To: Maneesh Yadav <maneeshkyadav <at> gmail.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 21965 <at> debbugs.gnu.org
Subject: bug#21965: 24.5; Emacs freezes when canceling at open file
Date: Tue, 24 Nov 2015 17:02:51 -0800

>>>>> Maneesh Yadav <maneeshkyadav <at> gmail.com> writes:

> lldb "thread continue" runs after, but emacs remains unresponsive 'thread
> step-in" does increment the instruction counter (output below)...but not
> really sure what that implies.

Maneesh,

Can you show me the full backtrace of all threads when it deadlocks? I just
realized that xg_select is called from wait_reading_process_output, which I
believe means it's callable from multiple threads at once.

The behavior of g_main_context_acquire is *documented* to never block, but
rather to return FALSE if another thread has the context; if the behavior has
been changed to block on OS X -- and the thread with the context is calling
pselect() and waiting to return -- this would match your experience.

John
This bug report was last modified 4 years and 267 days ago.

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