[hcoop/debian/mlton.git] / regression / thread-switch-size.sml

(* Access the current stack in the heap via a MLton.size object trace. *)
val rt : MLton.Thread.Runnable.t option ref = ref NONE
val rs : int ref = ref 0

fun stats () =
   let
      val () = rs := MLton.size rt
   in
      ()
   end

fun switcheroo () =
   MLton.Thread.switch
   (fn t => let
               val () = rt := SOME (MLton.Thread.prepare (t, ()))
               val () = stats ()
            in
               valOf (!rt)
            end)

val () = switcheroo ()
val _ = print (concat ["!rs > 0 = ", Bool.toString (!rs > 0), "\n"])
Commit	Line	Data
7f918cf1 CE	1	(* Access the current stack in the heap via a MLton.size object trace. *)
	2	val rt : MLton.Thread.Runnable.t option ref = ref NONE
	3	val rs : int ref = ref 0
	4
	5	fun stats () =
	6	let
	7	val () = rs := MLton.size rt
	8	in
	9	()
	10	end
	11
	12	fun switcheroo () =
	13	MLton.Thread.switch
	14	(fn t => let
	15	val () = rt := SOME (MLton.Thread.prepare (t, ()))
	16	val () = stats ()
	17	in
	18	valOf (!rt)
	19	end)
	20
	21	val () = switcheroo ()
	22	val _ = print (concat ["!rs > 0 = ", Bool.toString (!rs > 0), "\n"])