GNU bug report logs - #1474
23.0.60; desktop.el don't check if pid in his lock file is always in use

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Cc: emacs <at> gentoo.org
Subject: 23.0.60; desktop.el don't check if pid in his lock file is always in use
Date: Tue, 02 Dec 2008 22:43:43 +0100

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug <at> gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

When killing emacs --daemon or emacs brutally with killall for example,
when reloading emacs or emacs --daemon, emacs ask if we want to load
desktop file or not (pid is already in use...).
I think emacs should check if the PID that is in his lock file is always
in use.
i made a quick hack for that:
That go after line 967 in desktop.el in function desktop-read.

,----
| (eq 0 (call-process-shell-command (format "ps -u %s | grep emacs | grep %d" (getenv "USER") owner)))
`----

I can make a patch if you want, just tell me.

This bug is not really a bug if we consider using emacs normally:
we have just to answer yes or no.
But that particularly anoying with new feature emacs --daemon.
If this one is started as a service it can hang the system and booting
the machine come impossible until file .emacs.desktop.lock is removed.
(Gentoo provide an init script to start emacs --daemon as service with openrc)

Thank you.
Thierry

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.0.60/etc/DEBUG for instructions.


In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.14.5)
 of 2008-12-02 on tux
Windowing system distributor `The X.Org Foundation', version 11.0.10300000
configured using `configure  '--prefix=/usr' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23' '--infodir=/usr/share/info/emacs-23' '--with-sound' '--with-x' '--without-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--with-freetype' '--with-xft' '--without-libotf' '--without-m17n-flt' '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' '--build=i686-pc-linux-gnu' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CFLAGS=-march=i686 -pipe -O2' 'LDFLAGS=-Wl,-O1''

Important settings:
  value of $LC_ALL: fr_FR.UTF-8
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: fr_FR.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: ERC

Minor modes in effect:
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-networks-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  icomplete-mode: t
  icicle-mode: t
  delete-selection-mode: t
  minibuffer-depth-indicate-mode: t
  auto-image-file-mode: t
  partial-completion-mode: t
  shell-dirtrack-mode: t
  display-wireless-mode: t
  display-battery-mode: t
  display-time-mode: t
  diff-auto-refine-mode: t
  recentf-mode: t
  savehist-mode: t
  desktop-save-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
m e ! ) <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <left> <left> <left> <left> <left> <left> <left> 
<left> <left> <left> <left> <left> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> C-e 
<return> A n y SPC <backspace> w a y SPC i SPC w i 
l l SPC s u b m i t SPC a SPC b u g SPC a l s o . <return> 
T h a n k s . <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <right> <right> 
<right> <backspace> <left> <left> <left> <left> <left> 
g m a n e . <right> <right> <right> <right> <right> 
<right> <left> . <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<tab> <tab> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <tab> <tab> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <down> 
<down> <down> <down> <down> <down> C-SPC C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-x r s a C-g C-g C-c C-c y 
q q n <return> <return> q <return> <return> q q y <switch-frame> 
h k B s t : <backspace> <left> <left> <left> <left> 
<left> H i ! SPC <right> <right> <right> <right> <right> 
<return> M-x e m a c s - s u b m i <tab> <backspace> 
<backspace> <backspace> <backspace> <backspace> <tab> 
b u g <tab> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
b u g <S-iso-lefttab> <down> <down> <down> <down> <down> 
C-g M-x r e p o r t - e <tab> b u g <return>

Recent messages:
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Computing completion candidates... [5 times]

-- 
A + Thierry Volpiatto
Location: Saint-Cyr-Sur-Mer - France

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