Re: [boost] [thread] Some thoughts about "atomic"

From: Roland Schwarz (roland.schwarz_at_[hidden])
Date: 2006-12-01 12:48:13

Peter Dimov wrote:
> Roland Schwarz wrote:
>> If I am not wrong, In which respect is your example then an emulation
>> of acquire semantics. If I a wrong, what I am missing?
> 
> Nothing; it's an emulation, not an exact mapping. It achieves results that 
> are valid executions under an acquire/release model.

I understand.

> The emulation is 
> stricter since it doesn't allow all reorderings that are possible in an 
> acquire/release model. But it's a way to implement acquire/release on 
> hardware that provides bidirectional barriers.

I was under the (seemingly wrong) impression that an emulation has to 
preserve all of the semantics, opposed to simulation which I would have 
used in your example.

But nevertheless I got the point. Thanks.

Roland