merge 2531 3410
thanks
Nathanael Nerode writes ("Re: PATCH: Make install-info use fcntl (via perl's
flock) for locking"):
> unmerge 3410
> thanks
> # 3410 is a different bug, requesting that the lockfile be
> # cleaned up on process kill
The only correct fix to that is to use fcntl instead, so it should
remain merged.
> Hmm. In that case, what is the *point* of using fcntl locking? *EVER*?
> Fcntl locking is a fscking waste of time and effort in this case.
>
> Is it simply to make sure that the lock file is deleted if the program
> dies?
Yes (well, there are other advantages too but that's the main one).
> This can be done in a much simpler way, without a lock-method
> transition, by catching kill signals and deleting the lock file on all
> exit paths. As suggested in bug 3410, which was mistakenly merged with
> this one.
This is not reliable.
I'm afraid I don't have time right now to explain all of this to you
but all of the stuff I've been explaining should be well-known to
anyone messing around in this area.
Regards,
Ian.
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