29 lines
573 B
OCaml
29 lines
573 B
OCaml
open Event
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let add_ch = new_channel()
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let sub_ch = new_channel()
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let read_ch = new_channel()
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let rec accu n =
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select [
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wrap (receive add_ch) (fun x -> accu (n+x));
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wrap (receive sub_ch) (fun x -> accu (n-x));
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wrap (send read_ch n) (fun () -> accu n)
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]
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let rec sender chan value =
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sync(send chan value); sender chan value
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let read () =
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print_int(sync(receive read_ch)); print_newline()
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let main () =
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Thread.new accu 0;
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Thread.new (sender add_ch) 1;
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Thread.new (sender sub_ch) 1;
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while true do read() done
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let _ = Printexc.catch main ()
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