Subject: bug#3608: closed (Re: bug#3608: BG processes killed by start-process)

From: [email-masked] (GNU bug Tracking System)
Date: Sat, 17 Sep 2011 07:04:05 +0000

Your bug report

#3608: BG processes killed by start-process

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
3608: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3608
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#3608: BG processes killed by start-process
From: Andreas Schwab <[email-masked]>
To: JD Smith <[email-masked]>
Cc: [email-masked]
Date: Sat, 17 Sep 2011 08:58:18 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

JD Smith <[email-masked]> writes:

> Start-process seems to kill off child processes of which have been put
> into the background.
>
> Create a small shell script "bgtest":
>
> #!/bin/sh
> sleep 121 &
> exit 0
>
> and now
>
> (start-process "BGTEST" nil "bgtest")
>
> Notice that the sleep process has been killed, rather than waited on.

That's not a bug.  The session created for the process is closed when
the process exits, which causes the kernel to send SIGHUP to all
remaining processes in the session.

Andreas.

-- 
Andreas Schwab, [email-masked]
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
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Subject: BG processes killed by start-process
From: JD Smith <[email-masked]>
To: [email-masked]
Date: Thu, 18 Jun 2009 14:03:41 -0400

Start-process seems to kill off child processes of which have been put  
into the background.

Create a small shell script "bgtest":

#!/bin/sh
sleep 121 &
exit 0

and now

(start-process "BGTEST" nil "bgtest")

Notice that the sleep process has been killed, rather than waited on.

Is this the intended behavior?  Any thoughts for preventing it (other  
than modifying the script, which I don't control)?

Thanks.

----------------

In GNU Emacs 22.3.1 (i386-apple-darwin9.6.0, Motif Version 2.3.1)
  of 2009-04-29 on terrapin
Windowing system distributor `The X.Org Foundation', version  
11.0.10402000
configured using `configure  '--prefix=/opt/local' '--without-carbon'  
'--with-xpm' '--with-jpeg' '--with-tiff' '--with-gif' '--with-png' '-- 
with-x-toolkit=motif' 'CC=/usr/bin/gcc-4.0' 'CFLAGS=-O2' 'LDFLAGS=-L/ 
opt/local/lib' 'CPPFLAGS=-I/opt/local/include' 'CPP=/usr/bin/cpp-4.0''

Important settings:
   value of $LC_ALL: nil
   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: en_US.UTF-8
   locale-coding-system: utf-8
   default-enable-multibyte-characters: t

Major mode: Shell-script

Minor modes in effect:
   TeX-source-specials-mode: t
   which-function-mode: t
   show-paren-mode: t
   tooltip-mode: t
   mouse-wheel-mode: t
   menu-bar-mode: t
   file-name-shadow-mode: t
   global-font-lock-mode: t
   font-lock-mode: t
   blink-cursor-mode: t
   unify-8859-on-encoding-mode: t
   utf-translate-cjk-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: identity

Recent input:
<backspace> <backspace> <backspace> <backspace> <backspace>
/ h o m e / j d s m i t h / b i n / b g t e s t " )
<return> <down-mouse-1> <mouse-1> M-: <up> <help-echo>
<down-mouse-3> <mouse-3> <down-mouse-1> <mouse-movement>
<mouse-movement> <drag-mouse-1> <switch-frame> <down-mouse-1>
<mouse-movement> <mouse-1> C-x C-f C-g C-x C-f <M-backspace>
<M-backspace> b i n / b g <tab> t <tab> e <tab> C-x
C-f C-a <right> <right> C-k b i n / t e <tab> <return>
<down> <down> <down> <down> <up> <down> <return> <up>
d i s o w n SPC $ $ C-x C-s M-: <up> <return> <down-mouse-1>
<mouse-1> <backspace> <backspace> % % C-x C-s <down-mouse-1>
<mouse-1> M-: <up> <return> <down-mouse-1> <mouse-1>
<up> C-a C-k C-k C-x C-s <down-mouse-1> <mouse-1> <backspace>
C-x C-s M-: <up> <return> <down-mouse-1> <mouse-1>
M-: <up> C-e <left> <left> <left> <left> <left> <left>
<left> <left> <left> <right> <right> <right> <backspace>
<backspace> <right> <right> <right> <right> b g <return>
<down-mouse-1> <mouse-movement> <mouse-1> M-: <up>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <return> <down-mouse-1> <mouse-1> M-: <up>
<right> <right> <right> C-h f d <return> C-g C-h f
<return> <right> <down> <up> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> M-d M-d M-d C-d C-e <return> <switch-frame>
<switch-frame> <down-mouse-1> <mouse-movement> <mouse-1>
M-x p r o c <tab> C-h a p r o c e s s <return> M-x
l i s t - p r <tab> <return> <help-echo> <help-echo>
<down-mouse-1> <mouse-1> M-x e m a c s - C-a C-k r
e p <tab> o <tab> r <tab> <return>

Recent messages:
#<process BGTEST> [3 times]
Making completion list...
Quit
Type C-x 1 to remove help window.
#<process BGTEST>
Quit
Loading apropos...done
Type C-x 1 to remove help window.
Making completion list... [2 times]
Loading emacsbug...done

--
  J.D. Smith                  <==> http://tir.astro.utoledo.edu/jdsmith
  Ritter Observatory, MS 113  <==> 419-530-8528 <W>
  University of Toledo        <==> 419-530-5167 <F>
  Toledo, OH 43606            <==>