Re: [boost] [Concepts] Definition. Was [GSoC] [Boost.Hana] Formal review request

Subject: Re: [boost] [Concepts] Definition. Was [GSoC] [Boost.Hana] Formal review request
From: Brian Wood (woodbrian77_at_[hidden])
Date: 2014-08-19 17:08:48

Niall Douglas writes:

>
> Such a design would not make good use of hardware DMA such that use
> of the CPU can be completely avoided for bulk data transfers. To
> invoke hardware DMA, all i/o must be done from 4Kb aligned memory
> buffers. Indeed AFIO can enforce that for you because it's so
> important to performance.
>
> Generally if you're bothering to use async i/o, you have no interest
> in *ever* copying memory. That rules out all serialisation usually :)

How about calling it OS-level serialization?  I don't think the
need for message framing goes away.  Somehow the length
of a message has to be calculated and put in place.

-- 
Brian
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