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Hmm, sounds like the kind of thing that is hard to get right then. Maybe it's for the best that it isn't in the standard library until the design and implementa

• vertex-four 9y ago
  I doubt Rust will ever get green threads - it turns out that OS threads are good enough, and futures (async/await) is how IO will get dealt with at scale. Green threads don’t help compute-bound code, so with a solution in place for IO, they’re unnecessary.
  • steveklabnik 9y ago
    It's quite unlikely that Rust the language will get green threads, yes. We are getting stackless couroutines ("generators"), which are related but not the same thing. There's a ton of options in this space, and they're all slightly different, with different tradeoffs, so it's really hard to make good comparisons. You have to deeply understand exactly what each language is doing.