From: Ulrich Mueller <ulm@gentoo.org>
To: bwoster <bwooster47@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: emacs --daemon should provide a way to get its process id
Date: Sat, 1 Nov 2008 18:33:30 +0100 [thread overview]
Message-ID: <18700.37610.141752.354482@a1ihome1.kph.uni-mainz.de> (raw)
In-Reply-To: <20280352.post@talk.nabble.com>
>>>>> On Sat, 1 Nov 2008, bwoster wrote:
>> Any opinions about attached patch which adds a "--pidfile" option?
> I'm all for it! I've just spent an hour trying to test out an init.d
> script, but it is not very robust without a pidfile, so your patch
> would make things so much easier...
> Emacs does have the (emacs-pid) lisp function, but that too is not
> easy to try, and there may be race conditions when two --daemons are
> started.
> Actually... with your patch, if two emacs --daemon
> --pidfile=same_file are started, what will happen?
The second one will win and overwrite the file. That's why you
normally start daemons with a tool like "start-stop-daemon" which
takes care of locking.
Ulrich
next prev parent reply other threads:[~2008-11-01 17:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-31 19:19 emacs --daemon should provide a way to get its process id Ulrich Mueller
2008-11-01 14:05 ` bwoster
2008-11-01 17:33 ` Ulrich Mueller [this message]
2008-11-02 1:55 ` Stefan Monnier
2008-11-02 2:18 ` Juanma Barranquero
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