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Process Operations

FunctionSyntaxDescription
self(self)Current process PID
spawn(spawn fun)Spawn process
spawn_link(spawn_link fun)Spawn linked process
!(! pid msg)Send message
register(register name pid)Register process name
whereis(whereis name)Look up registered process
link(link pid)Link to process
unlink(unlink pid)Unlink from process
exit(exit reason)Exit current process
exit(exit pid reason)Exit other process

Process Examples:

;; Spawn a process
(let ((pid (spawn (lambda ()
                    (receive
                      ((tuple 'msg data)
                       (io:format "Got: ~p~n" (list data))))))))
  ;; Send it a message
  (! pid (tuple 'msg "hello"))
  pid)

;; Registered processes
(register 'my-server (self))
(! 'my-server (tuple 'request 42))

;; Linked processes
(let ((pid (spawn_link (lambda () (work)))))
  ;; If pid exits, we exit too
  (monitor pid))