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OCaml

open Types
type outcome = { name : string; ok : bool; ms : float; output : string; code : int }
let tests p = List.filter (fun (t : target) -> t.kind = Test) p.targets
let failed name code = { name; ok = false; ms = 0.0; output = ""; code }
(* Tests are independent processes, so they run the same way the build does:
up to jobs at once, each with its own output, reported in declaration order. *)
let run_all ~jobs p ts =
let results = Hashtbl.create 8 in
let running = Hashtbl.create 8 in
let queue = ref ts in
let spawn (t : target) =
let exe = Build.test_of p t in
let tmp = Filename.temp_file "meowc-test" ".log" in
let fd = Unix.openfile tmp [ Unix.O_WRONLY; Unix.O_CREAT; Unix.O_TRUNC ] 0o600 in
let nul = Exec.devnull () in
let argv = Array.of_list (exe :: t.args) in
(match Unix.create_process exe argv nul fd fd with
| pid -> Hashtbl.replace running pid (t, tmp, Unix.gettimeofday ())
| exception Unix.Unix_error _ ->
(try Sys.remove tmp with Sys_error _ -> ());
Hashtbl.replace results t.name (failed t.name 127));
Unix.close fd;
Unix.close nul
in
let reap () =
match Unix.wait () with
| exception Unix.Unix_error (Unix.EINTR, _, _) -> ()
| exception Unix.Unix_error (Unix.ECHILD, _, _) -> Hashtbl.reset running
| pid, status -> (
match Hashtbl.find_opt running pid with
| None -> ()
| Some (t, tmp, t0) ->
Hashtbl.remove running pid;
let ms = (Unix.gettimeofday () -. t0) *. 1000.0 in
let output = try Fs.read tmp with Sys_error _ -> "" in
(try Sys.remove tmp with Sys_error _ -> ());
let code = match status with Unix.WEXITED c -> c | _ -> 128 in
Hashtbl.replace results t.name { name = t.name; ok = code = 0; ms; output; code })
in
while !queue <> [] || Hashtbl.length running > 0 do
while !queue <> [] && Hashtbl.length running < jobs do
match !queue with t :: rest -> queue := rest; spawn t | [] -> ()
done;
if Hashtbl.length running > 0 then reap ()
done;
List.map
(fun (t : target) ->
match Hashtbl.find_opt results t.name with Some o -> o | None -> failed t.name 127)
ts