exited(Term)as result state for thread_join/2. If the thread has the attribute
detached(true)it terminates, but its exit status cannot be retrieved using thread_join/2, making the value of Term irrelevant. The Prolog stacks and C thread are reclaimed.
The current implementation does not guarantee proper releasing of all mutexes and proper cleanup in setup_call_cleanup/3, etc. Please use the exception mechanism (throw/1) to abort execution using non-standard control.