Rust 1.0 alpha released

Interesting. I've just been trying to do some googling for libgreen and pretty much failing to find anything. So if there are URLs for the following, please do say.

To do green threads as a library, that would mean you'd need some way to interrupt a thread, suspend the computation and then allocate some other work to the thread. The very fact there's no API to do this on the JVM is the reason why Akka is not an real actor framework. An alternative implementation is using something like call/cc. In many languages, the RTS is an interpreter of some sort, and so building it into the interpreter is quite straight-forward.

But for libgreen to be able to do this (and is libgreen itself written in Rust?), presumably there must be one of these mechanisms available.