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 avatar commented on May 23, 2024 4

How about Async::pollable()?

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shekohex avatar shekohex commented on May 23, 2024 2

What about removing the Async::new() entirely and use Async::try_from() for all T: AsRawFd?
Maybe I should open a PR with that? (I mean for the impl TryFrom<T: AsRawFd> for Async<T>)

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bugaevc avatar bugaevc commented on May 23, 2024 1

stdio/out/err are actually pollable or not (just not on Windows)? I remember doing that quite a few times.

That of course depends on what your stdio streams happen to be. If they're on-disk files, they're not pollable. If they're ptys, or sockets, or pipes, they are 🙂 So it's definitely true that you cannot assume they're always pollable.

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sdroege avatar sdroege commented on May 23, 2024

Maybe instead of "socket", "pollable fd" would be a better term? It seems weird to call the various other kinds of pollable fds on Linux "sockets" :)

On Windows, Async::new() only accepts T: AsRawSocket so you really can only use sockets with it - the situation there is perfect.

This also seems like a good reason to rename, as one might want to add an Async::handle() in the future that works on HANDLEs, for example.

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 avatar commented on May 23, 2024

@shekohex Interesting, haven't thought of that! But I worry people would do Async::try_from(file)?

@sdroege I like that - so we can explain Async is only for pollable things, which files and stdio aren't.

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sdroege avatar sdroege commented on May 23, 2024

@sdroege I like that - so we can explain Async is only for pollable things, which files and stdio aren't.

stdio/out/err are actually pollable or not (just not on Windows)? I remember doing that quite a few times.

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pkorotkov avatar pkorotkov commented on May 23, 2024

@stjepang As long as the AsRawFd bound is kept, you just can't stop people writing Async::try_from(file)?. However, you shouldn't because the method's name already suggests a known idiomatic approach most rust developers are familiar with.

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bugaevc avatar bugaevc commented on May 23, 2024

How about Async::pollable()?

Perhaps Async::polling(smth)? Though that sounds a bit Swift-ish.

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 avatar commented on May 23, 2024

I decided to not change this :) It seems that the original issue hasn't come up again since the initial release of smol. That may be partly because more people have become familiarized with Async vs Unblock distinction, and partly because there are now higher-level crates like async-net and async-fs.

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