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janet/examples/select.janet
Calvin Rose fb26c9b2c4 Add ev/select and ev/rselect initial implementation.
Getting closer to a CSP implmententation. Probably
useful to move scheduling fields outside of fibers
and into an external table.
2020-08-09 00:20:27 -05:00

23 lines
453 B
Clojure

(def channels
(seq [:repeat 5] (ev/chan 4)))
(defn writer [c]
(for i 0 3
(ev/sleep 0.1)
(print "writer giving item " i " to " c "...")
(ev/give c (string "item " i)))
(print "Done!"))
(defn reader [name]
(forever
(def c (ev/select ;channels))
(print "reader " name " got " (ev/take c) " from " c)))
# Readers
(each letter [:a :b :c :d :e :f :g]
(ev/call reader letter))
# Writers
(each c channels
(ev/call writer c))