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Re: AW: AW: AW: AW: Hard links on Win2k/XP

From: Mark Benedetto King <mbk_at_lowlatency.com>
Date: 2004-07-23 16:23:05 CEST

On Fri, Jul 23, 2004 at 10:10:38AM -0400, John Peacock wrote:
> Marco Scholz wrote:
>
> >What has multithread safety to do with this problem? (multithread safety ->
> >Locks, Mutexes, Critical Sections, Re-entrance safety .....)
>
> No, you are thinking of multithread safety only from the inside of a
> given set of processes. I am talking about a true multithreaded
> operating system, where I could be running two instances of Subversion
> at the same time in different sessions. Granted, it is stupid to do so
> on the same WC, but by making writes to the filesystem atomic in the
> fashion that Subversion (and _many_ other programs do), it would be
> safe[r] to do so.
>

Here's an obvious (and common) case:

You're serving a WC out of Apache. You want pages served to be
either revision X or revision Y, not somewhere in between.

--ben

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Received on Fri Jul 23 16:23:30 2004

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