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Re: A few questions about desktop.el

From: Stuart D. Herring
Subject: Re: A few questions about desktop.el
Date: Fri, 28 Apr 2006 22:02:15 -0700 (PDT)
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> I think it is somewhat dangerous to modify the file when reading it.
> My experience tells me that that can lead to various problems in weird
> cases, and it is much better if operations that only look at data
> are written so that they do not change anything.
> Can you use a different file name for the "in use" marker?

I'm curious about your experience/worries -- the file is opened twice, so
there's no seek issues, and the write is just an append.  There's obvious
race conditions, but I don't think they're important (as I said
previously).  And I was trying to avoid introducing another file for which
one would have to check for conflicts and such.  But I suppose there's no
harm in having `desktop-lock-file-name', customizable but defaulted to
".emacs.desktop.lock" or so.  It can hold the PID of the owner Emacs
process.  Speaking of which, is there a way to see from Lisp if an
unrelated PID is running?


This product is sold by volume, not by mass.  If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during

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