- (let-values (((n str) (udp-recv s 1024)))
- (print "Received " n " bytes over network: " str)
- (match (with-input-from-string str read)
- ((addr-str message ...)
- (apply send-message (cons (string->address addr-str) message)))
- (else
- (print "Warning: received badly formatted message string '" str "'"))))
- (loop))))))
-
-;; System interface
-
-(define system
- (make-actor (lambda (self . message)
- (match message
- (('shutdown)
- (print "## System actor received shutdown message.")
- (exit 0)
- 'done)
- (('println strings ...)
- (apply print strings)
- 'sleep)))))
-
-;; Testing
-
-
-(send-message system 'println "Hello, what is your name?")
-(send-message console
- (make-actor (lambda (self . message)
- (match message
- ((name)
- (send-message system 'println "Hello, " name "!")
- 'done)))))
-
-(thread-start!
- (lambda ()
- (thread-sleep! 120)
- (send-message system 'shutdown)))
-
-(print (uri->string system))
-
-(start-scheduler)
-(start-network-listener)
-(start-console)
-
-(define (boot-sam host port)
- (start-scheduler))
-
-;; (thread-join! scheduler-thread)
-
-(define (main)
- (let loop ((args (cdr (argv)))
- (host "localhost")
- (port 8000))
- (match args
- ((or "-h" "--help")
- (print-usage))
- (((or "-p" "--port") pstr rest ...)
- (loop rest host (string->number pstr)))
- (("--hostname" hstr rest ...)
- (loop rest hstr port))
- (()
- (boot-sam host port)))))
+ (apply deliver-message (next-local-message))
+ (loop)))))
+
+
+ ;; Network
+
+ (define (start-network-listener)
+ (thread-start!
+ (lambda ()
+ (let ((s (udp-open-socket*)))
+ (udp-bind! s #f sam-port)
+ (let loop ()
+ (let-values (((n str) (udp-recv s 1024)))
+ (print "network-listener: Received " n " bytes over network: " str)
+ (match (with-input-from-string str read)
+ ((address message ...)
+ (apply send-message (cons address message)))
+ (else
+ (print "Warning: received badly formatted message string '" str "'"))))
+ (loop))))))
+
+ ;; System interface
+
+ (define reader-queue-mutex (make-mutex "reader queue"))
+ (define reader-available-mutex (make-mutex "reader available"))
+ (mutex-lock! reader-available-mutex #f #f)
+ (define reader-queue (make-fifo))
+
+ (define (next-reader)
+ (let ((res #f))
+ (mutex-lock! reader-available-mutex #f #f)
+ (mutex-lock! reader-queue-mutex)
+ (set! res (fifo-pop reader-queue))
+ (if (not (fifo-empty? reader-queue))
+ (mutex-unlock! reader-available-mutex))
+ (mutex-unlock! reader-queue-mutex)
+ res))
+
+ (define (start-console)
+ (let loop ()
+ (let ((reader (next-reader)))
+ (print "console: received next reader: " reader)
+ (##sys#thread-block-for-i/o! (current-thread) 0 #t)
+ (thread-yield!)
+ (send-message reader (read-line)))
+ (loop)))
+
+ ;; System initialization
+
+ (define (make-system-actor)
+ (make-actor (lambda (self . message)
+ (match message
+
+ (('shutdown)
+ (print "## System actor received shutdown message.")
+ (exit 0)
+ 'done)
+
+ (('print strings ...)
+ (apply print strings)
+ 'sleep)
+
+ (('read reader)
+ (mutex-lock! reader-queue-mutex)
+ (fifo-push reader-queue reader)
+ (mutex-unlock! reader-available-mutex)
+ (mutex-unlock! reader-queue-mutex)
+ 'sleep)))))
+
+ (define system #f)
+
+ (define (init-sam host port)
+ (set! sam-host host)
+ (set! sam-port port)
+ (set! system (make-system-actor))
+ (start-scheduler)
+ (start-network-listener)))