Lightweight, portable C++ fibers, MIT license

Question

I would like to get ahold of a lightweight, portable fiber lib with MIT license (or looser). Boost.Coroutine does not qualify (not lightweight), neither do Portable Coroutine Li

Answer 1

There is a blazing fast and lightweight C asymmetric coroutine library - libaco.

It is really small, very fast and extremely memory efficient:

Along with the implementation of a production-ready C coroutine library, here is a detailed documentation about how to implement a fastest and correct coroutine library and also with a strict mathematical proof;

It has no more than 700 LOC but has the full function you may want from a coroutine library;

The benchmark part shows that one time of the context switching between coroutines only takes about 10 ns (for the case of standalone stack) on the AWS c5d.large machine;

User could choose to create a new coroutine with a standalone stack or with a share stack (could be shared with others);

It is extremely memory efficient: 10,000,000 amount of co simultaneously to run only cost 2.8 GB physical memory (run with tcmalloc, each co has a 120B copy-stack size configuration).

It also has a very detailed documentation.

PS:

It is under the Apache License, Version 2.0.