What happened to libgreen?

rust coroutine
Aleksander Alekseev picture Aleksander Alekseev · Apr 22, 2015 · Viewed 14.1k times · Source

As far as I understand libgreen is not a part of Rust standard library anymore. Also I can't find a separate libgreen package. There are a few alternatives - coroutine, which does not provide actual green threads for now, and green-rs, which is broken. Do I right understand that for now there is no lightweight Go-like processes in Rust?

Answer

huon picture huon · Apr 22, 2015

You are correct that there's no lightweight tasking library in std (or the rest of the main distribution), that green doesn't compile and that coroutine doesn't seem to fully handle the threading aspect yet. I do not know of any other library in this space.

As for what happened: the RFC linked to by that issue—RFC 230—is the canonical source of information. The summary is that it was found that the method by which green threading/IO was handled (std tried to abstract across both models, allowing them to be used interoperably automagically) was not worth the downsides. Now, std aims to just provide a minimum base-line of useful support: for IO/threading, that means "thin", safe wrappers for operating system functionality.

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