+(define (start-scheduler)
+ (let loop ()
+ (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 65536)))
+ (match (with-input-from-string str read)
+ ((address message ...)
+ (apply send-message (cons address message)))
+ (else
+ (log-msg "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)
+ (thread-start!