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You get an error on the write.
Yes, I know. It was more pointing out that the example given didn't
account for that.
in practice it's either vanishingly rare (user
maintenance programs) or non-existent (batch updates).
More users (internet) more likely, but still not really likely in
interactive land. As for batch, that's true until you say to yourself
one day: "Gee, I've got like an 8-way machine here, and this nightly
process it taking forever, if only I could split it up..." and then you
proceed to split the input into 8 parts and then run them concurrently.
Suddenly it's not so unlikely. Been there (on a 2-way) many years ago,
it was a get-next-number routine that was coded poorly, iirc.
As things move from the multi-core to the many-core world this will
become more and more of an issue. It's frightening to think about the
issues we'll have to deal with when there are 100s of processors in a
machine. :-)
-Walden
--
Walden H Leverich III
Tech Software
(516) 627-3800 x3051
WaldenL@xxxxxxxxxxxxxxx
http://www.TechSoftInc.com
Quiquid latine dictum sit altum viditur.
(Whatever is said in Latin seems profound.)
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