Re: [boost.async] Seeking Endorsement

From: Christian Mazakas (christian.mazakas_at_[hidden])
Date: 2023-07-27 16:14:44

> See what richard said: you can have asio run on io_uring already. You can then

The problem is, this gets said a lot but no one really understands it.

There's a lot to benefit from io_uring that Asio simply can't support
so saying that
"Asio can use io_uring" is technically true but it's largely
disingenuous because it
neglects all the good parts of io_uring that _can't_ be used. I don't
wanna derail the
conversation with all those details but I can expand upon this if required.

> If you want to use your own event loop, you can write an executor for it, too.

I see. Is this as a replacement for the one used internally by Async?

> Most likely UB. The await_suspend(std::coroutine_handle<T> h)
> can however grab the executor from the promise,
> by calling h.promise().get_executor() (after checking with a requires
> statement) if you need to post back.

Why would this be UB?

- Christian