From: Puverle, Tomas (IT) (Tomas.Puverle_at_[hidden])
Date: 2004-09-20 03:59:34
(first post to this forum, so be nice guys! :)
> For example, on ia32 32 bit aligned ops are atomic
But you will also need to express the constraint that the data be
aligned?
> , on ia64
> it is 64 bit.
However, remember that the fact that a given data type can be written in
a single operation != visibility across all processors in an MP system.
> doubles on ia32 need locking to be atomic, on
> ia64 they don't.
I think that the later models of ia32 can write up to 8 bytes at a time.
> Any suggestions on best practice for this?
I think you might want to send this post to comp.programming.threads too
- you may get some interesting feedback. I think Alexander Therekhov
has some class wrapper for atomic types that I am sure he'd be keen to
discuss, but unfortunately I've never had the time to review it.
Tom
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