| Re: [AD] user-defined events |
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On 2008-10-17, Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx> wrote:
> On Friday 17 October 2008, Peter Wang wrote:
> > That's the whole point of using atomic ops. Although it's true I
> > haven't stress tested it on a multi-core machine yet (or at all).
>
> Not entirely. The main point is to lock stuff between processes and threads
> afaik. So nothing can happen between the separate events. having more than one
> cpu changes things a bit, now multiple things CAN happen at once, each cpu can
> even call one of those functions at the same time. Are those asm ops system
> global locks? or just cpu local?
Please see http://en.wikipedia.org/wiki/Atomic_operations
and http://en.wikipedia.org/wiki/Fetch-and-add
Peter