For those interested in various approaches in this space that are very interesting, may I recommend: * Haskell and in particular Marlow's async library. * The

For those interested in various approaches in this space that are very interesting, may I recommend: * Haskell and in particular Marlow's async library. * The Erlang language's Actor system along with the OTP framework as a different way of thinking about orphaned processes (via supervision trees). * The Pony language, which can safely pass ownership of objects (and thusly coroutines) around.