Re: Does ASIO really still uses reactor instead of proactor on some OSes or is documentation just outdated?

From: Richard Hodges (hodges.r_at_[hidden])
Date: 2022-10-29 14:45:43

Yes, asio supports io_uring. Since approx. Boost 1.78 or thereabouts.

On Sat, 29 Oct 2022 at 14:54, Ivan Matek via Boost <boost_at_[hidden]>
wrote:

> If you go to
>
> https://www.boost.org/doc/libs/1_80_0/doc/html/boost_asio/overview/core/async.html#boost_asio.overview.core.async.implementation_using_reactor
>
> you will see that it says:
>
>
> * On many platforms, Boost.Asio implements the Proactor design pattern in
> terms of a Reactor, such as select, epoll or kqueue. This implementation
> approach corresponds to the Proactor design pattern as follows: *
>
>
> *[...]*
>
>
> * On Windows NT, 2000 and XP, Boost.Asio takes advantage of overlapped I/O
> to provide an efficient implementation of the Proactor design pattern. This
> implementation approach corresponds to the Proactor design pattern as
> follows: *
>
>
> I am unfortunately not a pattern or OS  expert, but I would expect that on
> every modern OS proactor can be implemented without using reactor, e.g. see
>
> *https://stackoverflow.com/a/57451551/700825
> <https://stackoverflow.com/a/57451551/700825>*
>
>
> The fact that mentioned Windows are NT, XP and 2000 also furthers my
> suspicion that docs are outdated.
>
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Richard Hodges
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