thread [body ...]
Creates and returns a new thread, which will last until the body terminates.
>(thread (+ 1 2) (+ 3 4))
#<thread:...t/private/kw.rkt:592:14>
>(type (thread (+ 1 2)))
thread
new-thread procedure
Creates and returns a new thread, which will last until
procedureterminates. This was called thread in arc0.
>(new-thread (fn () (+ 1 2)))
#<thread:...t/private/kw.rkt:592:14>
break-thread thread
Triggers a break exception on a thread.
>(let th (thread (sleep 2)) (break-thread th)) user break
kill-thread thread
Terminates the specified thread immediately.
>(let th (thread (sleep 100))
(kill-thread th)
(dead th))
t
sleep secs
Causes the current thread to sleep for at least the
specified time.
>(sleep 0.1)
nil
dead thread
Predicate to test if a thread has terminated.
>(let th (thread (sleep 1)) (prn (dead th)) (sleep 2) (prn (dead th))) nil t t