Async/await is strictly worse than green threads, except that the latter might require runtime and/or ABI changes that you cannot push out, whereas async is front-end sugar mostly hiding the fact that you're passing callbacks to enable "single-stack green threading." Am I wrong?
-
The main argument is that you know what may block. But maybe it is the same as checked exceptions in Java? In a modern system everything may block and everything may raise lots of exceptions. It’s impossible to micromanage both - you need to pin them down on architectural level.
This is also the main argument against async/await. This is like having to annotate functions using floats or files - very interesting info but there goes seamless composability
