[binary132]

I really don’t think it’s useful to be this nonspecific. You could give an example of what a Java greenlet cannot do or how it cannot be optimized, for example. If your whole point is actually just “I prefer the semantics of BEAM threads”, then just say that.

[troupo]

Those semantics are exactly what cannot be done in Java for many reasons (including legacy code etc.).

And yes, those semantics are important, but sadly most people stop at "yay we have green threads now" and then a null pointer exception kills their entire app, or the thread that handles requests, or...

[binary132]

So let’s be clear, your point is that you find the API of non-BEAM greenlets less useful, not that they’re somehow necessarily less efficient. Right?