On Thu, 2003-06-12 at 16:40, Paul Mackerras wrote:
> BZZZT. If another CPU is also doing atomic_inc_and_read you could end
> up with both calls returning the same value.
That is what I thought. Damn.
> You can't do atomic_inc_and_read on 386. You can on cpus that have
> cmpxchg (e.g. later x86). You can also on machines with load-locked
> and store-conditional instructions (alpha, ppc, probably most other
> RISCs).
So this is doable on everything but old i386 chips... hrm.
Robert Love
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