From: "Jason S. Cornez" <jcornez@ravenpack.com>
To: 6585@debbugs.gnu.org
Subject: bug#6585: 23.1; Hang / CPU 100% on background interaction when in minibuffer
Date: Tue, 31 Aug 2010 08:42:50 +0200 [thread overview]
Message-ID: <4C7CA46A.7010001@ravenpack.com> (raw)
In-Reply-To: <20100708141906.C46AE80333@dev268-l>
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Sorry this has taken so long; I've just been busy with other stuff.
Here is a self-contained test case that shows emacs hanging as I have
described above. It does seem to depend on the inhibited quitting as
suggested by Johan Bockgård in Msg #26 above.
1. Start a fresh emacs-23.2: /usr/local/emacs-23.2/src/emacs -q
2. M-x ielm and paste the following function.
(defun my::switch-to-buffer (buffer)
;; if buffer is in some window, go to it, otherwise switch-to-buffer
(let ((start (selected-window))
(current (next-window (selected-window) 'no-minibuffer 'visible))
(found nil))
(while (and (not (eq current start))
(not found))
(if (eq buffer (window-buffer current))
(setq found current))
(setq current (next-window current 'no-minibuffer 'visible)))
(if (null found)
(switch-to-buffer buffer)
(select-window found))))
3. (run-at-time 5 nil 'my::switch-to-buffer "*GNU Emacs*")
[Wait 5 seconds and emacs should switch to the buffer]
4. C-x b *ielm*
5. (run-at-time 5 nil 'my::switch-to-buffer "*GNU Emacs*")
C-x C-f [do this immediately, before the 5 seconds, then wait]
Once the 5 seconds expires, emacs will be using 100% CPU and will not
respond to C-g. It is not totally dead, as mouse rollovers (eg. on the
toolbar) seem to work. But it is in a state where I can't seem to get
it back to being useful again.
Of course, fixing the elisp function is easy and that simply and
effectively avoids this problem. Still, I find it disconcerting that I
can lockup emacs in such a manner.
Hoping this is helpful.
- -Jason
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next prev parent reply other threads:[~2010-08-31 6:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-08 14:19 bug#6585: 23.1; Hang / CPU 100% on background interaction when in minibuffer Jason Cornez
2010-07-08 16:52 ` Eli Zaretskii
2010-07-09 7:06 ` Jason S. Cornez
2010-07-14 10:27 ` Jason S. Cornez
[not found] ` <handler.6585.B.12786062373280.ack@debbugs.gnu.org>
2010-07-15 12:05 ` Jason S. Cornez
2010-07-15 14:57 ` martin rudalics
2010-07-15 15:33 ` Jason S. Cornez
2010-07-16 8:27 ` martin rudalics
2010-07-16 8:39 ` Jason S. Cornez
2010-07-15 15:53 ` Johan Bockgård
2010-07-15 15:59 ` Jason S. Cornez
2010-08-31 6:42 ` Jason S. Cornez [this message]
2010-08-31 10:24 ` Stefan Monnier
2010-08-31 10:34 ` Jason S. Cornez
2010-08-31 13:09 ` Stefan Monnier
2010-08-31 15:09 ` Jason S. Cornez
2012-04-10 19:37 ` Stefan Monnier
2010-09-13 13:22 ` bug#6585: Patch welcome? Jason S. Cornez
2010-09-13 15:55 ` Stefan Monnier
2011-11-21 22:54 ` bug#6585: status of patch? Tim Connors
2011-11-22 21:47 ` Stefan Monnier
2011-11-23 7:02 ` Jason S. Cornez
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