Re: better atomics - v0.2

On Tue, Nov 19, 2013 at 10:26 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> On 2013-11-19 09:12:42 -0500, Robert Haas wrote:
>> On point #1, I dunno. It looks like a lot of rearrangement to me, and
>> I'm not really sure what the final form of it is intended to be.
>
> Understandable. I am not that sure what parts we want to rearange
> either. We very well could leave barrier.h and s_lock.h untouched and
> just maintain the atomics stuff in parallel and switch over at some
> later point.
> I've mainly switched over s_lock.h to a) get some good coverage of the
> atomics code b) make sure the api works fine for it. We could add the
> atomics.h based implementation as a fallback for the cases in which no
> native implementation is available.
>
>> I think it desperately needs a README explaining what the point of all
>> this is and how to add support for a new platform or compiler if yours
>> doesn't work.
>
> Ok, I'll work on that. It would be useful to get feedback on the
> "frontend" API in atomics.h though. If people are unhappy with the API
> it might very well change how we can implement the API on different
> architectures.

Sure, but if people can't understand the API, then it's hard to decide
whether to be unhappy with it.

--
Robert Haas
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