No one really agrees on the exact terminology. There are stackful and stackless coroutines, continuations, green threads, fibers, cooperative threads, etc. Gene

No one really agrees on the exact terminology. There are stackful and stackless coroutines, continuations, green threads, fibers, cooperative threads, etc. Generally when people talk about coroutines without a qualification they are meaning the stackless variety. I personally consider a coroutine with a stack frame to be a cooperative thread, but understandably not everyone will agree on naming. The nomenclature hopefully should not affect the broader message of the article though. In any case, I am not so much trying as I already have. C++ does not have stackful coroutines. I implemented them via my libco library and have been using them for over a decade now.