this post was submitted on 08 Sep 2023
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Rust
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To be fair, a lot of that is because the scheduler detects blocking IO and context switches.
Rust could get really far with Go-style channels.
Are Go-style channels different from what Tokio provides? https://tokio.rs/tokio/tutorial/channels
They're very similar, but with very different ergonomics. Go channels are part of the language, so libraries use them frequently, whereas tokio is a separate library and not nearly as ubiquitous. So you'll get stuff like this:
This lets you implement a simple timeout for a channel read. So the barrier to using them is really low, so they get used a ton.
I haven't looked at the implementation of tokio channels, so I don't know if there's something subtly different, but they do have the same high level functionality.