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|
(* TEST
multicore;
no-tsan; (* TSan detects the intentional data race *)
{
bytecode;
}
{
native;
}
*)
let r = ref (Some 0)
let () = Gc.minor ()
let rec even lim put =
match !r with
| Some n when n = lim -> ()
| (Some n) when n mod 2 == 0 ->
let next = Some (n + 1) in
put next;
even lim put
| _ -> let _ = [!r] in even lim put
let rec odd lim put =
match !r with
| Some n when n = lim -> ()
| (Some n) when n mod 2 == 1 ->
let next = Some (n + 1) in
put next;
odd lim put
| _ -> let _ = [!r] in odd lim put
let go n put =
r := Some 0;
let d = Domain.spawn (fun () -> even n put) in
odd n put;
(match !r with
| Some n ->
Printf.printf "%d\n%!" n
| None ->
assert false);
Domain.join d
let () =
go 100_000 (fun x -> r := x)
|
