From my understanding, they're making the green thread API be very close to the current threading API, so that you need minimal changes to make them work. If I'

From my understanding, they're making the green thread API be very close to the current threading API, so that you need minimal changes to make them work. If I'm not mistaken, if you're already using an Executor, it's just a matter of passing one or two extra parameters when constructing it to make everything seamlessly use green threads. Even with mixing and matching, current systems can already run thousands of hardware threads, so I'm not sure it will affect performance or debuggability in any major way.