Newer Go ersions will also preempt green threads on normal functions calls and not only on syscalls. Both is not possible with the JVMs primitives where you nee

Newer Go ersions will also preempt green threads on normal functions calls and not only on syscalls. Both is not possible with the JVMs primitives where you need "cooperative code". However there exists Quasar for the JVM which seems to be able to emulate something similar to green threads with the help of bytecode weaving (and inserting preemption points).