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Fix a recursion to allow tail call elimination #1016

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merged 1 commit into from
Apr 2, 2024
Merged

Fix a recursion to allow tail call elimination #1016

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12 changes: 7 additions & 5 deletions src/transport.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -58,19 +58,21 @@ let run dispenseTask =
let avail = ref limit in
let rec runTask thr =
Lwt.try_bind thr
(fun () -> nextTask (); Lwt.return ())
(fun _ -> nextTask (); assert false)
(fun () -> nextTask ())
(fun _ -> assert false)
(* It is a programming error for an exception to reach this far. *)
|> ignore
and nextTask () =
match dispenseTask () with
| None -> incr avail
| None -> Lwt.return (incr avail)
| Some thr -> runTask thr
in
let rec fillPool () =
match dispenseTask () with
| None -> ()
| Some thr -> decr avail; runTask thr; if !avail > 0 then fillPool ()
| Some thr ->
decr avail;
let _ : unit Lwt.t = runTask thr in
if !avail > 0 then fillPool ()
in
fillPool ()
in
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