[moca]

Java tried green thread since day one in 1995, and it never worked out well and was dropped long time ago (around 2000). Go did a good job with its gorountine at certain cost, for example embed Go library is much harder than C library, so Go application is typically a standalone static binary.

It is really great to see Rust drops the mixture of green and native threads, and reduce the runtime to minimum. It will make Rust stand out in many environment that no other languages would work well (besides C).