FW: 23.1.50; starting a server without forking a daemon

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FW: 23.1.50; starting a server without forking a daemon

From:	Kenny Stuart
Subject:	FW: 23.1.50; starting a server without forking a daemon
Date:	Tue, 17 Nov 2009 14:31:18 +0000

From: address@hidden
To: address@hidden
Subject: 23.1.50; starting a server without forking a daemon
Date: Tue, 17 Nov 2009 14:25:34 +0000

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 address@hidden mailing list.

Please describe exactly what actions triggered the bug

and the precise symptoms of the bug. If you can, give

a recipe starting from `emacs -Q':

This is a feature request to add the facility to start an emacs server

using a command-line option that runs as a foreground process instead

of forking a daemon and exiting.

Motivation:

Forking a daemon then exiting the main process is incompatible with

systems that manage processes as services, such as launchd on OS X,

therefore it is not possible to create an effective launchd service

using emacs in daemon mode.

Possible Solution:

For review I have included a patch that adds a --server command line

option that does what the --daemon option does, except it runs the

server in the foreground process rather than forking a daemon and

exiting.

Please note that I am new to emacs and nix based operating systems and

in the short time I have had to spend on this was unable to add a SIGINT

handler to gracefully shutdown the emacs server, not that it matters

to launchd since it should send SIGTERM, but a solution would be nice.

There appear to be issues on OS X with creating a new frame using the -c option

to emacsclient as emacs crashes (so far during garbage collection) when

doing this, however I am still learning the dev tools available to me on this

platform and it will be a while before I could effectively report such bugs, so

this is just an FYI.

As I'm using a debug build so I can investigate further, can you confirm

that the build configure options I've used are ok and not likely to be

contributing to the instability, are there any other options I should be

using?

Please also note that this is the first time I have engaged with an open

source project so if I'm not doing it right let me know.

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'.

For information about debugging Emacs, please read the file

/Applications/Emacs.app/Contents/Resources/etc/DEBUG.

In GNU Emacs 23.1.50.2 (x86_64-apple-darwin10.2.0, NS apple-appkit-1038.25)

of 2009-11-17 on maverick.home

Windowing system distributor `Apple', version 10.3.1038

configured using `configure '--with-ns' '--enable-asserts' 'CFLAGS=-O0 -gdwarf-2 -g3 -Wno-pointer-sign''

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_GB.UTF-8

value of $XMODIFIERS: nil

locale-coding-system: utf-8-unix

default enable-multibyte-characters: t

Major mode: Text

Minor modes in effect:

tooltip-mode: t

mouse-wheel-mode: t

tool-bar-mode: t

menu-bar-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:

<backspace> <backspace> L i b r a r y / L a u n c h

A g e n t s / <help-echo> o r g . g n u . e n <backspace>

m a c s - s e r v e r . p l i s t <return> <help-echo>

t e x t / x m l <return> ~ / L i b r a r y / L a u

n c h A g e n t s SPC s c r i p t SPC o r <backspace>

i s t <return> a t t a c h m e n t <return> <backspace>

<help-echo> <menu-bar> <file> <write-file> <help-echo>

<backspace> <backspace> D o <tab> c <tab> e m a c s

- m a i l . t x t <return> <down-mouse-1> <mouse-1>

<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>

<triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down>

<wheel-down> <double-wheel-down> <wheel-down> <double-wheel-down>

<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>

<wheel-down> <double-wheel-down> <triple-wheel-down>

<triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up>

<triple-wheel-up> <triple-wheel-up> <wheel-up> <double-wheel-up>

<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>

<triple-wheel-up> <wheel-up> <double-wheel-up> <wheel-down>

<double-wheel-down> <triple-wheel-down> <triple-wheel-down>

<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>

<triple-wheel-up> <wheel-up> <wheel-up> <wheel-up>

<down-mouse-1> <mouse-movement> <mouse-movement> <help-echo>

<mouse-movement> <help-echo> <mouse-movement> <mouse-movement>

<drag-mouse-1> <menu-bar> <edit> <copy> <down-mouse-1>

<down-mouse-1> <down-mouse-1> <down-mouse-1> <down-mouse-1>

<down-mouse-1> M-x r e p o r t - e m a c s - b u g

Recent messages:

Auto-saving...done

Undo!

Auto-saving...done

Making completion list...

Saving file /Users/kstuart/Documents/emacs-mail.txt...

Wrote /Users/kstuart/Documents/emacs-mail.txt

byte-code: Beginning of buffer [2 times]

byte-code: End of buffer [2 times]

byte-code: Beginning of buffer [8 times]

Saved text from "Please write in English if possible, bec"

Load-path shadows:

/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/lucid hides /Applications/Emacs.app/Contents/Resources/lisp/obsolete/lucid

/Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/levents hides /Applications/Emacs.app/Contents/Resources/lisp/obsolete/levents

Features:

(ispell newcomment help-mode view shadow mail-extr message ecomplete

rfc822 mml mml-sec password-cache mm-decode mm-bodies mm-encode mailcap

mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader

gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit

mailheader canlock sha1 hex-util hashcash mail-utils emacsbug sendmail

regexp-opt server tooltip ediff-hook vc-hooks lisp-float-type mwheel

ns-win easymenu tool-bar dnd fontset image fringe lisp-mode register

page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock

font-lock syntax facemenu font-core frame cham georgian utf-8-lang

misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew

greek romanian slovak czech european ethiopic indian cyrillic chinese

case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button

minibuffer faces cus-face text-properties overlay md5 base64 format env

code-pages mule custom widget hashtable-print-readable backquote

make-network-process ns multi-tty emacs)

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emacs-foreground-server.patch
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