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Re: emacs 24 randomly hanging

From: Adam
Subject: Re: emacs 24 randomly hanging
Date: Tue, 21 Feb 2012 11:43:48 +0100

Adam <address@hidden> writes:

> I am using GNU Emacs (x86_64-unknown-linux-gnu, GTK+ Version
> 2.20.1) of 2012-02-15, built from sources.
> I am constantly experiencing my emacs hanging.  That is, C-g does not
> work, and the screen is not updated.  It happens about twice a day or
> so, which is very annoying, as I only have one emacs instance up
> and running in which I am doing all my work.
> I am pretty sure emacs hanging has been discussed to death, and I am
> pretty sure I just screwed my emacs configuration up somewhere.  What's
> worring me is that C-g does not work, though.  In fact, nothing works.
> I have to send a SIGKILL to my emacs process to get rid of it.
> Here's a backtrace:


> (I am running emacs in daemon mode with about three or five open X11
> clients.  Although the backtrace references Fx_create_frame, I *did* not
> create a frame.  I am using a tight intergration between my window
> manager and emacs though, and my window manager spawns about two
> `emacsclient -e' per second).
> Is this problem known?  Could this be fixed in emacs 24?

I am able to reproduce my problem with emacs -q.


killall -9 emacsclient

emacs -q --daemon || exit 1

emacsclient -e "(progn (require 'cl)
(defun walk-frames ()
 (loop for frame being the frames))
(add-hook 'window-configuration-change-hook 'walk-frames))"

for I in {1..100}
    echo $I
    emacsclient -e "(walk-frames)" >/dev/null &
    emacsclient -c -e "(delete-frame)" >/dev/null &


emacsclient -e "(kill-emacs 0)"

It is the very same backtrace.

Although this testcase is quite artificial, the underlying problem is
real.  I really hope this can be fixed for emacs 24.

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