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|
(* TEST
frame_pointers;
readonly_files = "fp_backtrace.c";
all_modules = "${readonly_files} reperform.ml";
native;
*)
open Effect
open Effect.Deep
external fp_backtrace : unit -> unit = "fp_backtrace" [@@noalloc]
type _ Effect.t += E : unit t
| F : unit t
let rec foo n =
if n = 10 then 0
else begin
if n = 5 then begin
perform E;
print_endline "# resumed...";
fp_backtrace ()
end;
foo (n + 1) + n
end
let rec bar n =
if n = 10 then 0
else begin
if n = 5 then begin
match_with foo 0
{ retc = ignore;
exnc = raise;
effc = fun (type a) (eff : a t) ->
match eff with
| F -> Some (fun (k : (a, _) continuation) -> continue k ())
| _ -> None }
end;
bar (n + 1) + n
end
let _ =
try_with bar 0
{ effc = fun (type a) (eff : a t) ->
match eff with
| E -> Some (fun (k : (a, _) continuation) -> continue k ())
| _ -> None }
|
