session_scheduler.ml 32.5 KB
Newer Older
Andrei Paskevich's avatar
Andrei Paskevich committed
1
2
3
(********************************************************************)
(*                                                                  *)
(*  The Why3 Verification Platform   /   The Why3 Development Team  *)
4
(*  Copyright 2010-2013   --   INRIA - CNRS - Paris-Sud University  *)
Andrei Paskevich's avatar
Andrei Paskevich committed
5
6
7
8
9
10
(*                                                                  *)
(*  This software is distributed under the terms of the GNU Lesser  *)
(*  General Public License version 2.1, with the special exception  *)
(*  on linking described in file LICENSE.                           *)
(*                                                                  *)
(********************************************************************)
François Bobot's avatar
François Bobot committed
11
12
13
14
15

open Format
open Session
open Debug

16
let debug = register_info_flag "scheduler"
Andrei Paskevich's avatar
Andrei Paskevich committed
17
18
  ~desc:"Print@ debugging@ messages@ about@ scheduling@ of@ prover@ calls@ \
         and@ transformtion@ applications."
François Bobot's avatar
François Bobot committed
19

20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
module Todo = struct
  type ('a,'b) todo =
      {mutable todo : int;
       mutable report : 'a;
       push_report : 'a -> 'b -> 'a;
       callback : 'a -> unit}

  let create init push callback =
    {todo = 0;  report = init; push_report = push; callback = callback}

  let stop todo =
    todo.todo <- todo.todo - 1;
    if todo.todo=0 then todo.callback todo.report

  let _done todo v =
    todo.report <- todo.push_report todo.report v;
    stop todo

  let start todo =
    todo.todo <- todo.todo + 1

(** dead code
  let print todo =
    dprintf debug "[Sched] todo : %i@." todo.todo
*)
end

François Bobot's avatar
François Bobot committed
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
(***************************)
(*     main functor        *)
(***************************)

module type OBSERVER = sig
  type key
  val create: ?parent:key -> unit -> key
  val remove: key -> unit
  val reset: unit -> unit

  val timeout: ms:int -> (unit -> bool) -> unit
  val idle: (unit -> bool) -> unit

  val notify_timer_state : int -> int -> int -> unit

  val init : key -> key any -> unit

  val notify : key any -> unit

66
(*
67
68
69
70
  val unknown_prover :
    key env_session -> Whyconf.prover -> Whyconf.prover option

  val replace_prover : key proof_attempt -> key proof_attempt -> bool
71
72
73
74
*)

  val uninstalled_prover :
    key env_session -> Whyconf.prover -> Whyconf.prover_upgrade_policy
75

François Bobot's avatar
François Bobot committed
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
end

module Make(O : OBSERVER) = struct

let notify = O.notify

let rec init_any any =
  O.init (key_any any) any;
  iter init_any any

let init_session session = session_iter init_any session

(***************************)
(*     session state       *)
(***************************)

(* type prover_option = *)
(*   | Detected_prover of prover_data *)
(*   | Undetected_prover of string *)

(* let prover_id p = match p with *)
(*   | Detected_prover p -> p.prover_id *)
(*   | Undetected_prover s -> s *)

100
(* dead code
François Bobot's avatar
François Bobot committed
101
102
103
104
105
let theory_name t = t.theory_name
let theory_key t = t.theory_key
let verified t = t.theory_verified
let goals t = t.theory_goals
let theory_expanded t = t.theory_expanded
106
*)
François Bobot's avatar
François Bobot committed
107

108
109
110
let running = function
  | Scheduled | Running -> true
  | Unedited | JustEdited | Interrupted
111
  | Done _ | InternalFailure _ -> false
François Bobot's avatar
François Bobot committed
112
113
114
115
116
117

(*************************)
(*         Scheduler     *)
(*************************)

type action =
118
  | Action_proof_attempt of int * int * string option * bool * string *
François Bobot's avatar
François Bobot committed
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
      Driver.driver * (proof_attempt_status -> unit) * Task.task
  | Action_delayed of (unit -> unit)


type timeout_action =
  | Check_prover of (proof_attempt_status -> unit) * Call_provers.prover_call
  | Any_timeout of (unit -> bool)

type t =
    { (** Actions that wait some idle time *)
      actions_queue : action Queue.t;
      (** Quota of action slot *)
      mutable maximum_running_proofs : int;
      (** Running actions which take one action slot *)
      mutable running_proofs : timeout_action list;
      (** Running check which doesn't take a running slot.
          Check the end of some computation *)
      mutable running_check : (unit -> bool) list;
      (** proof attempt that wait some available action slot *)
      proof_attempts_queue :
        ((proof_attempt_status -> unit) *
            (unit -> Call_provers.prover_call))
        Queue.t;
      (** timeout handler state *)
      mutable timeout_handler_activated : bool;
      mutable timeout_handler_running : bool;
      (** idle handler state *)
      mutable idle_handler_activated : bool;
    }

let set_maximum_running_proofs max sched =
 (** TODO dequeue actions if maximum_running_proofs increase *)
  sched.maximum_running_proofs <- max

let init max =
  dprintf debug "[Sched] init scheduler max=%i@." max;
  { actions_queue = Queue.create ();
    maximum_running_proofs = max;
    running_proofs = [];
    running_check = [];
    proof_attempts_queue = Queue.create ();
    timeout_handler_activated = false;
    timeout_handler_running = false;
    idle_handler_activated = false
  }

(* timeout handler *)

let timeout_handler t =
  dprintf debug "[Sched] Timeout handler called@.";
  assert (not t.timeout_handler_running);
  t.timeout_handler_running <- true;
  (** Check if some action ended *)
  let l = List.fold_left
    (fun acc c ->
       match c with
         | Check_prover(callback,call)  ->
             (match Call_provers.query_call call with
               | None -> c::acc
               | Some post ->
                   let res = post () in callback (Done res);
                   acc)
         | Any_timeout callback ->
             let b = callback () in
             if b then c::acc else acc)
    [] t.running_proofs
  in
  (** Check if some new actions must be started *)
  let l =
    if List.length l < t.maximum_running_proofs then
      begin try
        let (callback,pre_call) = Queue.pop t.proof_attempts_queue in
191
        callback Running;
François Bobot's avatar
François Bobot committed
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
        dprintf debug "[Sched] proof attempts started@.";
        let call = pre_call () in
        (Check_prover(callback,call))::l
      with Queue.Empty -> l
      end
    else l
  in
  t.running_proofs <- l;
  (** Call the running check *)
  t.running_check <- List.fold_left
    (fun acc check -> if check () then check::acc else acc)
    [] t.running_check;
  let continue =
    match l with
      | [] ->
          dprintf debug "[Sched] Timeout handler stopped@.";
          false
      | _ -> true
  in
  O.notify_timer_state
    (Queue.length t.actions_queue)
    (Queue.length t.proof_attempts_queue) (List.length l);
  t.timeout_handler_activated <- continue;
  t.timeout_handler_running <- false;
  continue

let run_timeout_handler t =
  if t.timeout_handler_activated then () else
    begin
      t.timeout_handler_activated <- true;
      dprintf debug "[Sched] Timeout handler started@.";
      O.timeout ~ms:100 (fun () -> timeout_handler t)
    end

let schedule_any_timeout t callback =
  dprintf debug "[Sched] schedule a new timeout@.";
  t.running_proofs <- (Any_timeout callback) :: t.running_proofs;
  run_timeout_handler t

231
let schedule_check t callback =
François Bobot's avatar
François Bobot committed
232
233
234
235
236
237
238
239
240
241
242
  dprintf debug "[Sched] add a new check@.";
  t.running_check <- callback :: t.running_check;
  run_timeout_handler t

(* idle handler *)


let idle_handler t =
  try
    begin
      match Queue.pop t.actions_queue with
243
        | Action_proof_attempt(timelimit,memlimit,old,inplace,command,driver,
François Bobot's avatar
François Bobot committed
244
245
246
247
248
                               callback,goal) ->
            begin
              try
                let pre_call =
                  Driver.prove_task
249
                    ?old ~inplace ~command ~timelimit ~memlimit driver goal
François Bobot's avatar
François Bobot committed
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
                in
                Queue.push (callback,pre_call) t.proof_attempts_queue;
                run_timeout_handler t
              with e ->
                Format.eprintf "@[Exception raise in Session.idle_handler:@ \
%a@.@]"
                  Exn_printer.exn_printer e;
                callback (InternalFailure e)
            end
        | Action_delayed callback -> callback ()
    end;
    true
  with Queue.Empty ->
    t.idle_handler_activated <- false;
    dprintf debug "[Sched] idle_handler stopped@.";
    false
    | e ->
      Format.eprintf "@[Exception raise in Session.idle_handler:@ %a@.@]"
        Exn_printer.exn_printer e;
      eprintf "Session.idle_handler stopped@.";
      false


let run_idle_handler t =
  if t.idle_handler_activated then () else
    begin
      t.idle_handler_activated <- true;
      dprintf debug "[Sched] idle_handler started@.";
      O.idle (fun () -> idle_handler t)
    end

(* main scheduling functions *)

let cancel_scheduled_proofs t =
  let new_queue = Queue.create () in
  try
    while true do
      match Queue.pop t.actions_queue with
288
        | Action_proof_attempt(_timelimit,_memlimit,_old,_inplace,_command,
François Bobot's avatar
François Bobot committed
289
                               _driver,callback,_goal) ->
290
            callback Interrupted
François Bobot's avatar
François Bobot committed
291
292
293
294
295
296
297
298
        | Action_delayed _ as a->
            Queue.push a new_queue
    done
  with Queue.Empty ->
    Queue.transfer new_queue t.actions_queue;
    try
      while true do
        let (callback,_) = Queue.pop t.proof_attempts_queue in
299
        callback Interrupted
François Bobot's avatar
François Bobot committed
300
301
      done
    with
302
      | Queue.Empty ->
François Bobot's avatar
François Bobot committed
303
304
305
          O.notify_timer_state 0 0 (List.length t.running_proofs)


306
let schedule_proof_attempt ~timelimit ~memlimit ?old ~inplace
François Bobot's avatar
François Bobot committed
307
    ~command ~driver ~callback t goal =
308
309
310
  dprintf debug "[Sched] Scheduling a new proof attempt (goal : %a)@."
    (fun fmt g -> Format.pp_print_string fmt
      (Task.task_goal g).Decl.pr_name.Ident.id_string) goal;
311
  callback Scheduled;
François Bobot's avatar
François Bobot committed
312
  Queue.push
313
    (Action_proof_attempt(timelimit,memlimit,old,inplace,command,driver,
François Bobot's avatar
François Bobot committed
314
315
316
317
318
319
320
321
322
323
                        callback,goal))
    t.actions_queue;
  run_idle_handler t

let schedule_edition t command filename callback =
  dprintf debug "[Sched] Scheduling an edition@.";
  let precall =
    Call_provers.call_on_file ~command ~regexps:[] ~timeregexps:[]
      ~exitcodes:[(0,Call_provers.Unknown "")] filename
  in
324
  callback Running;
François Bobot's avatar
François Bobot committed
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
  t.running_proofs <- (Check_prover(callback, precall ())) :: t.running_proofs;
  run_timeout_handler t

let schedule_delayed_action t callback =
  dprintf debug "[Sched] Scheduling a delayed action@.";
  Queue.push (Action_delayed callback) t.actions_queue;
  run_idle_handler t

(**************************)
(*  session function      *)
(**************************)

let update_session ~allow_obsolete old_session env whyconf  =
  O.reset ();
  let (env_session,_) as res =
    update_session ~keygen:O.create ~allow_obsolete old_session env whyconf in
François Bobot's avatar
François Bobot committed
341
  dprintf debug "Init_session@\n";
François Bobot's avatar
François Bobot committed
342
343
344
  init_session env_session.session;
  res

345
346
let add_file env_session ?format f =
  let mfile = add_file ~keygen:O.create env_session ?format f in
François Bobot's avatar
François Bobot committed
347
348
349
350
351
352
353
354
  let any_file = (File mfile) in
  init_any any_file;
  O.notify any_file;
  mfile

(*****************************************************)
(* method: run a given prover on each unproved goals *)
(*****************************************************)
355
(*
356
357
358
359
360
361
362
363
364
365
let rec find_loadable_prover eS prover =
  (** try the default one *)
  match load_prover eS prover with
    | None -> begin
      (** If its not loadable ask for one*)
      match O.unknown_prover eS prover with
        | None -> None
        | Some prover -> find_loadable_prover eS prover
    end
    | Some npc -> Some (prover,npc)
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
*)

let find_prover eS a =
  match load_prover eS a.proof_prover with
    | Some p -> Some (a.proof_prover, p,a)
    | None ->
        match O.uninstalled_prover eS a.proof_prover with
          | Whyconf.CPU_keep -> None
          | Whyconf.CPU_upgrade new_p ->
            (* does a proof using new_p already exists ? *)
            let g = a.proof_parent in
            begin
              try
                let _ = PHprover.find g.goal_external_proofs new_p in
                (* yes, then we do nothing *)
                None
              with Not_found ->
                (* we modify the prover in-place *)
                Session.change_prover a new_p;
                match load_prover eS new_p with
                  | Some p -> Some (new_p,p,a)
Andrei Paskevich's avatar
Andrei Paskevich committed
387
                  | None ->
388
389
390
391
392
393
                    (* should never happen because at loading, config
                       ignores uninstalled prover targets.
                       Nevertheless, we can safely return None.
                    *)
                    None
            end
Andrei Paskevich's avatar
Andrei Paskevich committed
394
          | Whyconf.CPU_duplicate new_p ->
395
396
397
398
399
400
401
402
403
404
            (* does a proof using new_p already exists ? *)
            let g = a.proof_parent in
            begin
              try
                let _ = PHprover.find g.goal_external_proofs new_p in
                (* yes, then we do nothing *)
                None
              with Not_found ->
                (* we duplicate the proof_attempt *)
                let new_a = copy_external_proof
Andrei Paskevich's avatar
Andrei Paskevich committed
405
                  ~notify ~keygen:O.create ~prover:new_p ~env_session:eS a
406
407
408
409
                in
                O.init new_a.proof_key (Proof_attempt new_a);
                match load_prover eS new_p with
                  | Some p -> Some (new_p,p,new_a)
Andrei Paskevich's avatar
Andrei Paskevich committed
410
                  | None ->
411
412
413
414
415
416
                    (* should never happen because at loading, config
                       ignores uninstalled prover targets.
                       Nevertheless, we can safely return None.
                    *)
                    None
            end
417

François Bobot's avatar
François Bobot committed
418

419
420
421
422
(* to avoid corner cases when prover results are obtained very closely
   to the time or mem limits, we adapt these limits when we replay a
   proof *)
let adapt_limits a =
423
  match a.proof_state with
424
425
426
427
428
429
  | Done { Call_provers.pr_answer = r;
           Call_provers.pr_time = t } ->
    (* increased time limit is 1 + twice the previous running time,
       but enforced to remain inside the interval [l,2l] where l is
       the previous time limit *)
    let increased_time =
430
431
      let t = truncate (1.0 +. 2.0 *. t) in
      max a.proof_timelimit (min t (2 * a.proof_timelimit))
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
    in
    (* increased mem limit is just 1.5 times the previous mem limit *)
    let increased_mem = 3 * a.proof_memlimit / 2 in
    begin
      match r with
      | Call_provers.OutOfMemory -> increased_time, a.proof_memlimit
      | Call_provers.Timeout -> a.proof_timelimit, increased_mem
      | Call_provers.Valid
      | Call_provers.Unknown _
      | Call_provers.Invalid -> increased_time, increased_mem
      | Call_provers.Failure _
      | Call_provers.HighFailure ->
        (* correct ? failures are supposed to appear quickly anyway... *)
        a.proof_timelimit, a.proof_memlimit
    end
  | _ -> a.proof_timelimit, a.proof_memlimit

449

450
type run_external_status =
451
452
453
454
| Starting
| MissingProver
| MissingFile of string
| StatusChange of proof_attempt_status
455
456
457

exception NoFile of string

458
459
460
(* do not modify the proof duration stored in proof sessions if it
   changed by less than 10% or 0.1s, so as to avoid diff noise in
   session files *)
461
462
463
464
let fuzzy_proof_time nres ores =
  match ores, nres with
  | Done { Call_provers.pr_time = told },
    Done ({ Call_provers.pr_time = tnew } as res')
465
  when tnew >= told *. 0.9 -. 0.1 && tnew <= told *. 1.1 +. 0.1 ->
466
467
468
    Done { res' with Call_provers.pr_time = told }
  | _, _ -> nres

469
470
471
(** run_external_proof_v3 doesn't modify existing proof attempt, it can just
    create new one by find_prover *)
let run_external_proof_v3 eS eT a callback =
472
473
  match find_prover eS a with
  | None ->
474
    callback a a.proof_prover 0 None Starting;
475
476
477
    (* nothing to do *)
    callback a a.proof_prover 0 None MissingProver
  | Some(ap,npc,a) ->
478
    callback a ap 0 None Starting;
479
480
481
482
483
    if a.proof_edited_as = None &&
       npc.prover_config.Whyconf.interactive
    then begin
      callback a ap 0 None (MissingFile "unedited")
    end else begin
484
      let previous_result = a.proof_state in
485
      let timelimit, memlimit = adapt_limits a in
486
487
488
      let inplace = npc.prover_config.Whyconf.in_place in
      let command = Whyconf.get_complete_command npc.prover_config in
      let cb result =
489
        let result = fuzzy_proof_time result previous_result in
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
        callback a ap timelimit
          (match previous_result with Done res -> Some res | _ -> None)
          (StatusChange result) in
      try
        let old =
          match get_edited_as_abs eS.session a with
          | None -> None
          | Some f ->
            if Sys.file_exists f then Some f
            else raise (NoFile f) in
        schedule_proof_attempt
          ~timelimit ~memlimit
          ?old ~inplace ~command
          ~driver:npc.prover_driver
          ~callback:cb
          eT
          (goal_task a.proof_parent)
      with NoFile f ->
        callback a ap 0 None (MissingFile f)
    end

511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
(** run_external_proof_v2 modify the session according to the current state *)
let run_external_proof_v2 eS eT a callback =
  let previous_res = ref (a.proof_state,a.proof_obsolete) in
  let callback a ap timelimit previous state =
    begin match state with
    | Starting -> previous_res := (a.proof_state,a.proof_obsolete)
    | MissingFile _ ->
      set_proof_state ~notify ~obsolete:false ~archived:false
        Unedited a
    | StatusChange result ->
      begin match result with
      | Interrupted ->
        let previous_result,obsolete = !previous_res in
        set_proof_state ~notify ~obsolete
          ~archived:false previous_result a
      | _ ->
        set_proof_state ~notify ~obsolete:false
          ~archived:false result a
      end
    | _ -> ()
    end;
    callback a ap timelimit previous state in
  run_external_proof_v3 eS eT a callback

535
536
537
538
let run_external_proof_v2 eS eT a callback =
  (* Perhaps the test a.proof_archived should be done somewhere else *)
  if a.proof_archived || running a.proof_state then () else
  run_external_proof_v2 eS eT a callback
539

540
let run_external_proof eS eT ?callback a =
541
542
543
544
545
546
547
548
549
550
  let callback =
    match callback with
    | None -> fun _ _ _ _ _ -> ()
    | Some c -> fun a _ _ _ s ->
      match s with
      | Starting -> ()
      | MissingProver -> c a Interrupted
      | MissingFile _ -> c a a.proof_state
      | StatusChange s -> c a s in
  run_external_proof_v2 eS eT a callback
François Bobot's avatar
François Bobot committed
551

552
let prover_on_goal eS eT ?callback ~timelimit ~memlimit p g =
François Bobot's avatar
François Bobot committed
553
  let a =
554
555
556
    try
      let a = PHprover.find g.goal_external_proofs p in
      set_timelimit timelimit a;
557
      set_memlimit memlimit a;
558
      a
François Bobot's avatar
François Bobot committed
559
    with Not_found ->
560
      let ep = add_external_proof ~keygen:O.create ~obsolete:false
Andrei Paskevich's avatar
Andrei Paskevich committed
561
        ~archived:false ~timelimit ~memlimit
562
        ~edit:None g p Interrupted in
François Bobot's avatar
François Bobot committed
563
564
565
      O.init ep.proof_key (Proof_attempt ep);
      ep
  in
566
  run_external_proof eS eT ?callback a
François Bobot's avatar
François Bobot committed
567

568
let prover_on_goal_or_children eS eT
569
    ~context_unproved_goals_only ~timelimit ~memlimit p g =
570
  goal_iter_leaf_goal ~unproved_only:context_unproved_goals_only
571
    (prover_on_goal eS eT ~timelimit ~memlimit p) g
François Bobot's avatar
François Bobot committed
572

573
let run_prover eS eT ~context_unproved_goals_only ~timelimit ~memlimit pr a =
François Bobot's avatar
François Bobot committed
574
575
576
  match a with
    | Goal g ->
        prover_on_goal_or_children eS eT
577
          ~context_unproved_goals_only ~timelimit ~memlimit pr g
François Bobot's avatar
François Bobot committed
578
579
580
    | Theory th ->
        List.iter
          (prover_on_goal_or_children eS eT
581
             ~context_unproved_goals_only ~timelimit ~memlimit pr)
François Bobot's avatar
François Bobot committed
582
583
584
585
586
587
          th.theory_goals
    | File file ->
        List.iter
          (fun th ->
             List.iter
               (prover_on_goal_or_children eS eT
588
                  ~context_unproved_goals_only ~timelimit ~memlimit pr)
François Bobot's avatar
François Bobot committed
589
590
591
592
               th.theory_goals)
          file.file_theories
    | Proof_attempt a ->
        prover_on_goal_or_children eS eT
593
          ~context_unproved_goals_only ~timelimit ~memlimit pr a.proof_parent
François Bobot's avatar
François Bobot committed
594
595
596
    | Transf tr ->
        List.iter
          (prover_on_goal_or_children eS eT
597
             ~context_unproved_goals_only ~timelimit ~memlimit pr)
François Bobot's avatar
François Bobot committed
598
          tr.transf_goals
François Bobot's avatar
François Bobot committed
599
600
601
    | Metas m ->
      prover_on_goal_or_children eS eT
        ~context_unproved_goals_only ~timelimit ~memlimit pr m.metas_goal
François Bobot's avatar
François Bobot committed
602
603
604
605
606

(**********************************)
(* method: replay obsolete proofs *)
(**********************************)

607
let proof_successful_or_just_edited a =
François Bobot's avatar
François Bobot committed
608
  match a.proof_state with
609
    | Done { Call_provers.pr_answer = Call_provers.Valid }
610
    | JustEdited -> true
François Bobot's avatar
François Bobot committed
611
612
613
614
    | _ -> false

let rec replay_on_goal_or_children eS eT
    ~obsolete_only ~context_unproved_goals_only g =
François Bobot's avatar
François Bobot committed
615
616
  iter_goal
    (fun a ->
François Bobot's avatar
François Bobot committed
617
       if not obsolete_only || a.proof_obsolete then
618
         if not context_unproved_goals_only || proof_successful_or_just_edited a
619
         then run_external_proof eS eT a)
François Bobot's avatar
François Bobot committed
620
621
622
623
624
625
626
627
628
    (iter_transf
       (replay_on_goal_or_children eS eT
          ~obsolete_only ~context_unproved_goals_only)
    )
    (iter_metas
       (replay_on_goal_or_children eS eT
          ~obsolete_only ~context_unproved_goals_only)
    )
    g
François Bobot's avatar
François Bobot committed
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655

let replay eS eT ~obsolete_only ~context_unproved_goals_only a =
  match a with
    | Goal g ->
        replay_on_goal_or_children eS eT
          ~obsolete_only ~context_unproved_goals_only g
    | Theory th ->
        List.iter
          (replay_on_goal_or_children eS eT
             ~obsolete_only ~context_unproved_goals_only)
          th.theory_goals
    | File file ->
        List.iter
          (fun th ->
             List.iter
               (replay_on_goal_or_children eS eT
                  ~obsolete_only ~context_unproved_goals_only)
               th.theory_goals)
          file.file_theories
    | Proof_attempt a ->
        replay_on_goal_or_children eS eT
          ~obsolete_only ~context_unproved_goals_only a.proof_parent
    | Transf tr ->
        List.iter
          (replay_on_goal_or_children eS eT
             ~obsolete_only ~context_unproved_goals_only)
          tr.transf_goals
François Bobot's avatar
François Bobot committed
656
657
658
659
    | Metas m ->
      replay_on_goal_or_children eS eT
        ~obsolete_only ~context_unproved_goals_only m.metas_goal

François Bobot's avatar
François Bobot committed
660
661
662
663
664

(***********************************)
(* method: mark proofs as obsolete *)
(***********************************)

665
666
667
let cancel_proof a =
  if not a.proof_archived then
    set_obsolete ~notify a
François Bobot's avatar
François Bobot committed
668
669
670

let cancel = iter_proof_attempt cancel_proof

671
672
(** Set or unset archive *)

673
let set_archive a b = set_archived a b; notify (Proof_attempt a)
674

François Bobot's avatar
François Bobot committed
675
676
677
678
679
680
681
682
(*********************************)
(* method: check existing proofs *)
(*********************************)

type report =
  | Result of Call_provers.prover_result * Call_provers.prover_result
  | CallFailed of exn
  | Prover_not_installed
683
  | Edited_file_absent of string
François Bobot's avatar
François Bobot committed
684
685
  | No_former_result of Call_provers.prover_result

686
let push_report report (g,p,t,r) =
687
  (g.goal_name,p,t,r)::report
François Bobot's avatar
François Bobot committed
688
689

let check_external_proof eS eT todo a =
690
691
692
693
  let callback a ap tl old s =
    let g = a.proof_parent in
    match s with
    | Starting ->
694
      Todo.start todo
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
    | MissingFile f ->
      Todo._done todo (g, ap, tl, Edited_file_absent f)
    | MissingProver ->
      Todo._done todo (g, ap, tl, Prover_not_installed)
    | StatusChange (Scheduled | Running) -> ()
    | StatusChange (Interrupted | Unedited | JustEdited) -> assert false
    | StatusChange (InternalFailure e) ->
      Todo._done todo (g, ap, tl, CallFailed e)
    | StatusChange (Done res) ->
      let r =
        match old with
        | None -> No_former_result res
        | Some old -> Result (res, old) in
      Todo._done todo (g, ap, tl, r) in
  run_external_proof_v2 eS eT a callback
François Bobot's avatar
François Bobot committed
710

711
(* dead code
François Bobot's avatar
François Bobot committed
712
713
let check_goal_and_children eS eT todo g =
  goal_iter_proof_attempt (check_external_proof eS eT todo) g
714
*)
François Bobot's avatar
François Bobot committed
715

716
let check_all ?(release=false) eS eT ~callback =
François Bobot's avatar
François Bobot committed
717
  dprintf debug "[Sched] check all@.%a@." print_session eS.session;
718
719
 let todo = Todo.create [] push_report callback in
  Todo.start todo;
720
721
722
723
724
725
726
727
728
  let check_top_goal g =
    goal_iter_proof_attempt (check_external_proof eS eT todo) g;
    if release then release_sub_tasks g
  in
  PHstr.iter (fun _ file ->
      List.iter  (fun t ->
          List.iter  check_top_goal t.theory_goals)
        file.file_theories)
    eS.session.session_files;
729
  Todo.stop todo
François Bobot's avatar
François Bobot committed
730

731
732
733
734
735

(***********************************)
(* play all                        *)
(***********************************)

736
let rec play_on_goal_and_children eS eT ~timelimit ~memlimit todo l g =
737
738
739
740
741
742
743
744
745
  let timelimit, memlimit, auto_proved =
    PHprover.fold (fun _ pa (timelimit, memlimit, _ as acc) ->
      match pa.proof_edited_as, pa.proof_state with
        | None, Done { Call_provers.pr_answer = Call_provers.Valid } ->
            max timelimit pa.proof_timelimit,
            max memlimit pa.proof_memlimit,
            true
        | _ -> acc)
      g.goal_external_proofs (timelimit, memlimit, false) in
746
  let callback _key status =
747
    if not (running status) then Todo._done todo () in
748
749
750
751
  if auto_proved then begin
    List.iter
      (fun p ->
        Todo.start todo;
752
753
754
      (* eprintf "todo increased to %d@." todo.Todo.todo; *)
      (* eprintf "prover %a on goal %s@." *)
      (*   Whyconf.print_prover p g.goal_name.Ident.id_string; *)
755
756
757
        prover_on_goal eS eT ~callback ~timelimit ~memlimit p g)
      l
  end;
François Bobot's avatar
François Bobot committed
758
759
760
761
762
763
764
765
766
  iter_goal
    (fun _ -> ())
    (iter_transf
       (play_on_goal_and_children eS eT ~timelimit ~memlimit todo l)
    )
    (iter_metas
       (play_on_goal_and_children eS eT ~timelimit ~memlimit todo l)
    )
    g
767
768


769
let play_all eS eT ~callback ~timelimit ~memlimit l =
770
771
  let todo = Todo.create () (fun () _ -> ()) callback in
  Todo.start todo;
772
  PHstr.iter
773
    (fun _ file ->
774
775
776
      List.iter
        (fun th ->
          List.iter
777
            (play_on_goal_and_children eS eT ~timelimit ~memlimit todo l)
778
779
            th.theory_goals)
        file.file_theories)
780
    eS.session.session_files;
781
  Todo.stop todo
782

783

François Bobot's avatar
François Bobot committed
784
785
(** Transformation *)

786
let transformation_on_goal_aux eS tr keep_dumb_transformation g =
François Bobot's avatar
François Bobot committed
787
  let subgoals = Trans.apply_transform tr eS.env (goal_task g) in
788
  let b = keep_dumb_transformation ||
François Bobot's avatar
François Bobot committed
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
    match subgoals with
      | [task] ->
              (* let s1 = task_checksum (get_task g) in *)
              (* let s2 = task_checksum task in *)
              (* (\* *)
              (*   eprintf "Transformation returned only one task.
                   sum before = %s, sum after = %s@." (task_checksum g.task)
                   (task_checksum task); *)
              (*   eprintf "addresses: %x %x@." (Obj.magic g.task)
                   (Obj.magic task); *)
              (* *\) *)
              (* s1 <> s2 *)
        not (Task.task_equal task (goal_task g))
      | _ -> true
  in
  if b then
MARCHE Claude's avatar
MARCHE Claude committed
805
    let ntr = add_transformation ~keygen:O.create eS tr g subgoals in
806
807
808
    init_any (Transf ntr);
    Some ntr
  else None
François Bobot's avatar
François Bobot committed
809

810
811
812
813
814
let transform_goal eS sched ?(keep_dumb_transformation=false)
    ?callback tr g =
  schedule_delayed_action sched
    (fun () -> let ntr = transformation_on_goal_aux eS tr
                 keep_dumb_transformation g in
815
               Opt.apply () callback ntr)
François Bobot's avatar
François Bobot committed
816
817


818
819
820
821
822
let transform_goal_or_children ~context_unproved_goals_only eS sched ?callback
    tr g =
  goal_iter_leaf_goal ~unproved_only:context_unproved_goals_only
    (transform_goal eS sched ~keep_dumb_transformation:false
       ?callback tr) g
François Bobot's avatar
François Bobot committed
823

824
let rec transform eS sched ~context_unproved_goals_only ?callback tr a =
François Bobot's avatar
François Bobot committed
825
826
  match a with
    | Goal g | Proof_attempt {proof_parent = g} ->
827
828
829
      transform_goal_or_children ~context_unproved_goals_only eS sched
        ?callback tr g
    | _ -> iter (transform ~context_unproved_goals_only eS sched ?callback tr) a
François Bobot's avatar
François Bobot committed
830
831
832
833
834

(*****************************)
(* method: edit current goal *)
(*****************************)

835
836
837
let edit_proof_v3 eS sched ~default_editor callback a =
  match find_prover eS a with
  | None ->
Andrei Paskevich's avatar
Andrei Paskevich committed
838
          (* nothing to do
839
840
             TODO: report an non replayable proof if some option is set
          *)
841
842
    ()
  | Some(_,npc,a) ->
843
(*
844
845
    let ap = a.proof_prover in
    match find_loadable_prover eS a.proof_prover with
François Bobot's avatar
François Bobot committed
846
      | None -> ()
847
848
        (** Perhaps a new prover *)
      | Some (nap,npc) ->
François Bobot's avatar
François Bobot committed
849
          let g = a.proof_parent in
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
          try
            if nap == ap then raise Not_found;
            let np_a = PHprover.find g.goal_external_proofs nap in
            if O.replace_prover np_a a then begin
              (** The notification will be done by the new proof_attempt *)
              O.remove np_a.proof_key;
              raise Not_found end
          with Not_found ->
          (** replace [a] by a new_proof attempt if [a.proof_prover] was not
              loadable *)
          let a = if nap == ap then a
            else
              let a = copy_external_proof
                ~notify ~keygen:O.create ~prover:nap ~env_session:eS a in
              O.init a.proof_key (Proof_attempt a);
              a in
          (** Now [a] is a proof_attempt of the lodable prover [nap] *)
867
868
*)

869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
    let editor =
      match npc.prover_config.Whyconf.editor with
      | "" -> default_editor
      | s ->
        try
          let ed = Whyconf.editor_by_id eS.whyconf s in
          String.concat " "(ed.Whyconf.editor_command ::
                              ed.Whyconf.editor_options)
        with Not_found -> default_editor
    in
    let file = update_edit_external_proof eS a in
    dprintf debug "[Editing] goal %a with command '%s' on file %s@."
      (fun fmt a -> pp_print_string fmt
        (Task.task_goal (goal_task a.proof_parent))
        . Decl.pr_name.Ident.id_string)
      a editor file;
    schedule_edition sched editor file (fun res -> callback a res)

let edit_proof eS sched ~default_editor a =
  (* check that the state is not Scheduled or Running *)
  if a.proof_archived || running a.proof_state then ()
(*
    info_window `ERROR "Edition already in progress"
*)
  else
    let callback a res =
      match res with
      | Done {Call_provers.pr_answer = Call_provers.Unknown ""} ->
        set_proof_state ~notify ~obsolete:true ~archived:false
          JustEdited a
      | _ ->
        set_proof_state ~notify ~obsolete:false ~archived:false
          res a
    in
    edit_proof_v3 eS sched ~default_editor callback a

let edit_proof_v3 eS sched ~default_editor ~callback a =
  let callback a res =
    match res with
    | Done {Call_provers.pr_answer = Call_provers.Unknown ""} ->
      callback a
    | _ -> ()
  in
  edit_proof_v3 eS sched ~default_editor callback a

François Bobot's avatar
François Bobot committed
914
915
916
917
918
919
920
921
922
923
924
925
926
927

(*************)
(* removing  *)
(*************)

let remove_proof_attempt (a:O.key proof_attempt) =
  O.remove a.proof_key;
  let notify = (notify : O.key notify) in
  remove_external_proof ~notify a

let remove_transformation t =
  O.remove t.transf_key;
  remove_transformation ~notify t

François Bobot's avatar
François Bobot committed
928
929
930
931
let remove_metas t =
  O.remove t.metas_key;
  remove_metas ~notify t

François Bobot's avatar
François Bobot committed
932
933
934
935
let rec clean = function
  | Goal g when g.goal_verified ->
    iter_goal
      (fun a ->
936
        if a.proof_obsolete || not (proof_successful_or_just_edited a) then
François Bobot's avatar
François Bobot committed
937
938
939
          remove_proof_attempt a)
      (fun t ->
        if not t.transf_verified then remove_transformation t
François Bobot's avatar
François Bobot committed
940
941
942
943
944
        else transf_iter clean t)
      (fun m ->
        if not m.metas_verified then remove_metas m
        else metas_iter clean m)
      g
François Bobot's avatar
François Bobot committed
945
  | Goal g ->
François Bobot's avatar
François Bobot committed
946
947
948
949
    (** don't iter on proof_attempt if the goal is not proved *)
    iter_goal
      (fun _ -> ())
      (fun t ->
Andrei Paskevich's avatar
Andrei Paskevich committed
950
        (* NO !!!
MARCHE Claude's avatar
MARCHE Claude committed
951
           if not t.transf_verified then remove_transformation t
Andrei Paskevich's avatar
Andrei Paskevich committed
952
        else
MARCHE Claude's avatar
MARCHE Claude committed
953
954
        *)
        transf_iter clean t)
François Bobot's avatar
François Bobot committed
955
956
957
958
      (fun m ->
        if not m.metas_verified then remove_metas m
        else metas_iter clean m)
      g
François Bobot's avatar
François Bobot committed
959
960
961
962
963
964
965
966
967
  | Proof_attempt a -> clean (Goal a.proof_parent)
  | any -> iter clean any

(**** convert ***)

let convert_unknown_prover =
  Session_tools.convert_unknown_prover ~keygen:O.create

end
968
969
970
971
972
973
974
975
976
977
978


module Base_scheduler (X : sig end)  =
  (struct

    let usleep t = ignore (Unix.select [] [] [] t)


    let idle_handler = ref None
    let timeout_handler = ref None

979
980
    let verbose = ref true

981
982
983
984
985
986
987
988
989
990
991
     let idle f =
       match !idle_handler with
         | None -> idle_handler := Some f;
         | Some _ -> failwith "Replay.idle: already one handler installed"

     let timeout ~ms f =
       match !timeout_handler with
         | None -> timeout_handler := Some(float ms /. 1000.0 ,f);
         | Some _ -> failwith "Replay.timeout: already one handler installed"

     let notify_timer_state w s r =
992
993
       if !verbose then
         Printf.eprintf "Progress: %d/%d/%d                       \r%!" w s r
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041

     let main_loop () =
       let last = ref (Unix.gettimeofday ()) in
       try while true do
           let time = Unix.gettimeofday () -. !last in
           (* attempt to run timeout handler *)
           let timeout =
             match !timeout_handler with
               | None -> false
               | Some(ms,f) ->
                 if time > ms then
                   let b = f () in
                   if b then true else
                     begin
                       timeout_handler := None;
                       true
                     end
                 else false
           in
           if timeout then
             last := Unix.gettimeofday ()
           else
      (* attempt to run the idle handler *)
             match !idle_handler with
               | None ->
                 begin
                   let ms =
                     match !timeout_handler with
                       | None -> raise Exit
                       | Some(ms,_) -> ms
                   in
                   usleep (ms -. time)
                 end
               | Some f ->
                 let b = f () in
                 if b then () else
                   begin
                     idle_handler := None;
                   end
         done
       with Exit -> ()

end)





François Bobot's avatar
François Bobot committed
1042
1043
1044
1045
1046
(*
Local Variables:
compile-command: "unset LANG; make -C ../.. bin/why3ide.byte"
End:
*)