X-Git-Url: http://git.nguyen.vg/gitweb/?p=tatoo.git;a=blobdiff_plain;f=src%2Frun.ml;h=8eb58f9867c8f96445c6e005b7829ded57874822;hp=fb130845b476179b8db57ffe18f81d4508c586d9;hb=3406b26f1ea26a997d7f194c547439891c108ce6;hpb=4ce31bbf274a8f8ac9cba15c5339459865f2a741
diff --git a/src/run.ml b/src/run.ml
index fb13084..8eb58f9 100644
--- a/src/run.ml
+++ b/src/run.ml
@@ -14,397 +14,302 @@
(***********************************************************************)
INCLUDE "utils.ml"
+INCLUDE "debug.ml"
+
open Format
open Misc
-
-module Make (T : Tree.S) =
- struct
-
- module NodeSummary =
- struct
+open Bigarray
+
+type stats = { run : int;
+ tree_size : int;
+ fetch_trans_cache_access : int;
+ fetch_trans_cache_hit : int;
+ eval_trans_cache_access : int;
+ eval_trans_cache_hit : int;
+ }
+
+let fetch_trans_cache_hit = ref 0
+let fetch_trans_cache_access = ref 0
+let eval_trans_cache_hit = ref 0
+let eval_trans_cache_access = ref 0
+let reset_stat_counters () =
+ fetch_trans_cache_hit := 0;
+ fetch_trans_cache_access := 0;
+ eval_trans_cache_hit := 0;
+ eval_trans_cache_access := 0
+
+
+module NodeSummary =
+struct
(* Pack into an integer the result of the is_* and has_ predicates
for a given node *)
- type t = int
- let dummy = -1
- (*
- 4444444444443210
- 4 -> kind
- 3 -> is_left
- 2 -> is_right
- 1 -> has_left
- 0 -> has_right
- *)
-
- let has_right (s : t) : bool =
- Obj.magic (s land 1)
-
- let has_left (s : t) : bool =
- Obj.magic ((s lsr 1) land 1)
-
- let is_right (s : t) : bool =
- Obj.magic ((s lsr 2) land 1)
-
- let is_left (s : t) : bool =
- Obj.magic ((s lsr 3) land 1)
-
- let kind (s : t) : Tree.NodeKind.t =
- Obj.magic (s lsr 4)
-
- let make is_left is_right has_left has_right kind =
- ((Obj.magic kind) lsl 4) lor
- ((int_of_bool is_left) lsl 3) lor
- ((int_of_bool is_right) lsl 2) lor
- ((int_of_bool has_left) lsl 1) lor
- (int_of_bool has_right)
-
+ type t = int
+ let dummy = -1
+ (*
+ ...44443210
+ ...4444 -> kind
+ 3 -> has_right
+ 2 -> has_left
+ 1 -> is_right
+ 0 -> is_left
+ *)
+ let is_left (s : t) : bool =
+ s land 1 != 0
+
+ let is_right (s : t) : bool =
+ s land 0b10 != 0
+
+ let has_left (s : t) : bool =
+ s land 0b100 != 0
+
+ let has_right (s : t) : bool =
+ s land 0b1000 != 0
+
+ let kind (s : t) : Tree.NodeKind.t =
+ Obj.magic (s lsr 4)
+
+ let make is_left is_right has_left has_right kind =
+ (int_of_bool is_left) lor
+ ((int_of_bool is_right) lsl 1) lor
+ ((int_of_bool has_left) lsl 2) lor
+ ((int_of_bool has_right) lsl 3) lor
+ ((Obj.magic kind) lsl 4)
end
- type node_status = {
- sat : StateSet.t; (* States that are satisfied at the current node *)
- todo : StateSet.t; (* States that remain to be proven *)
- (* For every node_status and automaton a:
- a.states - (sat U todo) = unsat *)
- summary : NodeSummary.t; (* Summary of the shape of the node *)
- }
-(* Describe what is kept at each node for a run *)
-
- module NodeStatus =
- struct
- include Hcons.Make(struct
- type t = node_status
- let equal c d =
- c == d ||
- c.sat == d.sat &&
- c.todo == d.todo &&
- c.summary == d.summary
-
- let hash c =
- HASHINT3((c.sat.StateSet.id :> int),
- (c.todo.StateSet.id :> int),
- c.summary)
- end
- )
- let print ppf s =
- fprintf ppf
- "{ sat: %a; todo: %a; summary: _ }"
- StateSet.print s.node.sat
- StateSet.print s.node.todo
- end
+ let dummy_set = StateSet.singleton State.dummy
+
+
- let dummy_status =
- NodeStatus.make { sat = StateSet.empty;
- todo = StateSet.empty;
- summary = NodeSummary.dummy;
- }
+IFDEF HTMLTRACE
+THEN
+ type sat_array = StateSet.t array list
+ DEFINE IFHTML(a,b) = (a)
+ELSE
+ type sat_array = StateSet.t array
+ DEFINE IFHTML(a,b) = (b)
+END
+
+ let unsafe_get a i =
+ if i < 0 then StateSet.empty else
+ Array.unsafe_get (IFHTML(List.hd a, a)) i
+ let unsafe_set a i v old_v =
+ if v != old_v then
+ Array.unsafe_set (IFHTML(List.hd a, a)) i v
- type run = {
- tree : T.t ;
+ type 'a run = {
+ tree : 'a ;
(* The argument of the run *)
auto : Ata.t;
(* The automaton to be run *)
- status : NodeStatus.t array;
- (* A mapping from node preorders to NodeStatus *)
- unstable : Bitvector.t;
- (* A bitvector remembering whether a subtree is stable *)
- mutable redo : bool;
- (* A boolean indicating whether the run is incomplete *)
+ mutable sat: sat_array;
+ (* A mapping from node preorders to states satisfied at that node *)
mutable pass : int;
- (* The number of times this run was updated *)
- mutable cache2 : Ata.Formula.t Cache.N2.t;
+ (* Number of run we have performed *)
+ mutable fetch_trans_cache : Ata.Formula.t Cache.N2.t;
(* A cache from states * label to list of transitions *)
- mutable cache5 : NodeStatus.t Cache.N5.t;
+ mutable td_cache : StateSet.t Cache.N6.t;
+ mutable bu_cache : StateSet.t Cache.N6.t;
+ (* Two 6-way caches used during the top-down and bottom-up phase
+ label * self-set * fc-set * ns-set * parent-set * node-shape -> self-set
+ *)
+ node_summaries: (int, int16_unsigned_elt, c_layout) Array1.t;
}
- let pass r = r.pass
- let stable r = not r.redo
- let auto r = r.auto
- let tree r = r.tree
-
-
let dummy_form = Ata.Formula.stay State.dummy
- let make auto tree =
- let len = T.size tree in
- {
- tree = tree;
- auto = auto;
- status = Array.create len dummy_status;
- unstable = Bitvector.create ~init:true len;
- redo = true;
- pass = 0;
- cache2 = Cache.N2.create dummy_form;
- cache5 = Cache.N5.create dummy_status;
- }
-
- let get_status a i =
- if i < 0 then dummy_status else Array.get a i
-
- let unsafe_get_status a i =
- if i < 0 then dummy_status else Array.unsafe_get a i
-
-IFDEF HTMLTRACE
- THEN
-DEFINE TRACE(e) = (e)
- ELSE
-DEFINE TRACE(e) = ()
-END
-
- let html tree node i config msg =
- let config = config.NodeStatus.node in
- Html.trace (T.preorder tree node) i
- "node: %i
%s
sat: %a
todo: %a
_______________________
"
- (T.preorder tree node)
- msg
- StateSet.print config.sat
- StateSet.print config.todo
-
-
- let debug msg tree node i config =
- let config = config.NodeStatus.node in
- eprintf
- "DEBUG:%s node: %i\nsat: %a\ntodo: %a\nround: %i\n"
- msg
- (T.preorder tree node)
- StateSet.print config.sat
- StateSet.print config.todo
- i
-
- let get_form cache2 auto tag q =
+ let get_form fetch_trans_cache auto tag q =
let phi =
- Cache.N2.find cache2 (tag.QName.id :> int) (q :> int)
+ incr fetch_trans_cache_access;
+ Cache.N2.find fetch_trans_cache (tag.QName.id :> int) (q :> int)
in
if phi == dummy_form then
let phi = Ata.get_form auto tag q in
let () =
Cache.N2.add
- cache2
+ fetch_trans_cache
(tag.QName.id :> int)
(q :> int) phi
in phi
- else phi
-
- type trivalent = False | True | Unknown
- let of_bool = function false -> False | true -> True
- let or_ t1 t2 =
- match t1 with
- False -> t2
- | True -> True
- | Unknown -> if t2 == True then True else Unknown
-
- let and_ t1 t2 =
- match t1 with
- False -> False
- | True -> t2
- | Unknown -> if t2 == False then False else Unknown
-
- (* Define as macros to get lazyness *)
-DEFINE OR_(t1,t2) =
- let __t1 = (t1) in
- match t1 with
- False -> (t2)
- | True -> True
- | Unknown -> if (t2) == True then True else Unknown
-
-DEFINE AND_(t1,t2) =
- let __t1 = (t1) in
- match t1 with
- False -> False
- | True -> (t2)
- | Unknown -> if (t2) == False then False else Unknown
+ else begin
+ incr fetch_trans_cache_hit;
+ phi
+ end
let eval_form phi fcs nss ps ss summary =
let open Ata in
let rec loop phi =
begin match Formula.expr phi with
- | Boolean.False -> False
- | Boolean.True -> True
+ | Boolean.False -> false
+ | Boolean.True -> true
| Boolean.Atom (a, b) ->
begin
let open NodeSummary in
match a.Atom.node with
| Move (m, q) ->
- let { NodeStatus.node = n_sum; _ } as sum =
+ b && StateSet.mem q (
match m with
`First_child -> fcs
| `Next_sibling -> nss
- | `Parent | `Previous_sibling -> ps
- | `Stay -> ss
- in
- if sum == dummy_status || StateSet.mem q n_sum.todo then
- Unknown
- else
- of_bool (b == StateSet.mem q n_sum.sat)
- | Is_first_child -> of_bool (b == is_left summary)
- | Is_next_sibling -> of_bool (b == is_right summary)
- | Is k -> of_bool (b == (k == kind summary))
- | Has_first_child -> of_bool (b == has_left summary)
- | Has_next_sibling -> of_bool (b == has_right summary)
+ | `Parent | `Previous_sibling -> ps
+ | `Stay -> ss
+ )
+ | Is_first_child -> b == is_left summary
+ | Is_next_sibling -> b == is_right summary
+ | Is k -> b == (k == kind summary)
+ | Has_first_child -> b == has_left summary
+ | Has_next_sibling -> b == has_right summary
end
- | Boolean.And(phi1, phi2) -> AND_ (loop phi1, loop phi2)
- | Boolean.Or (phi1, phi2) -> OR_ (loop phi1, loop phi2)
+ | Boolean.And(phi1, phi2) -> loop phi1 && loop phi2
+ | Boolean.Or (phi1, phi2) -> loop phi1 || loop phi2
end
in
loop phi
- let eval_trans_aux auto cache2 tag fcs nss ps old_status =
- let { sat = old_sat;
- todo = old_todo;
- summary = old_summary } as os_node = old_status.NodeStatus.node
- in
- let sat, todo =
- StateSet.fold (fun q ((a_sat, a_todo) as acc) ->
- let phi =
- get_form cache2 auto tag q
- in
- let v = eval_form phi fcs nss ps old_status old_summary in
- match v with
- True -> StateSet.add q a_sat, a_todo
- | False -> acc
- | Unknown -> a_sat, StateSet.add q a_todo
- ) old_todo (old_sat, StateSet.empty)
- in
- if old_sat != sat || old_todo != todo then
- NodeStatus.make { os_node with sat; todo }
- else old_status
+ let eval_trans_aux auto trans_cache tag summary fcs nss ps sat todo =
+ StateSet.fold (fun q (a_sat) ->
+ let phi =
+ get_form trans_cache auto tag q
+ in
+ if eval_form phi fcs nss ps a_sat summary then
+ StateSet.add q a_sat
+ else a_sat
+ ) todo sat
- let eval_trans auto cache2 cache5 tag fcs nss ps ss =
- let rec loop old_status =
- let new_status =
- eval_trans_aux auto cache2 tag fcs nss ps old_status
- in
- if new_status == old_status then old_status else loop new_status
+ let rec eval_trans_fix auto trans_cache tag summary fcs nss ps sat todo =
+ let new_sat =
+ eval_trans_aux auto trans_cache tag summary fcs nss ps sat todo
in
- let fcsid = (fcs.NodeStatus.id :> int) in
- let nssid = (nss.NodeStatus.id :> int) in
- let psid = (ps.NodeStatus.id :> int) in
- let ssid = (ss.NodeStatus.id :> int) in
+ if new_sat == sat then sat else
+ eval_trans_fix auto trans_cache tag summary fcs nss ps new_sat todo
+
+
+ let eval_trans auto fetch_trans_cache eval_cache tag summary fcs nss ps ss todo =
+ let fcsid = (fcs.StateSet.id :> int) in
+ let nssid = (nss.StateSet.id :> int) in
+ let psid = (ps.StateSet.id :> int) in
+ let ssid = (ss.StateSet.id :> int) in
let tagid = (tag.QName.id :> int) in
- let res = Cache.N5.find cache5 tagid ssid fcsid nssid psid in
- if res != dummy_status then res
- else let new_status = loop ss in
- Cache.N5.add cache5 tagid ssid fcsid nssid psid new_status;
- new_status
+ let res = Cache.N6.find eval_cache tagid summary ssid fcsid nssid psid in
+ incr eval_trans_cache_access;
+ if res != dummy_set then begin incr eval_trans_cache_hit; res end
+ else let new_sat =
+ eval_trans_fix auto fetch_trans_cache tag summary fcs nss ps ss todo
+ in
+ Cache.N6.add eval_cache tagid summary ssid fcsid nssid psid new_sat;
+ new_sat
+module Make (T : Tree.S) (L : Node_list.S with type node = T.node) =
+ struct
+
+ let make auto tree =
+ let len = T.size tree in
+ {
+ tree = tree;
+ auto = auto;
+ sat = (let a = Array.create len StateSet.empty in
+ IFHTML([a], a));
+ pass = 0;
+ fetch_trans_cache = Cache.N2.create dummy_form;
+ td_cache = Cache.N6.create dummy_set;
+ bu_cache = Cache.N6.create dummy_set;
+ node_summaries = let ba = Array1.create int16_unsigned c_layout len in
+ Array1.fill ba 0; ba
+ }
- let top_down run =
- let _i = run.pass in
+
+ let top_down run =
+ let i = run.pass in
let tree = run.tree in
let auto = run.auto in
- let status = run.status in
- let cache2 = run.cache2 in
- let cache5 = run.cache5 in
- let unstable = run.unstable in
- let init_todo = StateSet.diff (Ata.get_states auto) (Ata.get_starting_states auto) in
- let rec loop node =
- let node_id = T.preorder tree node in
- if node == T.nil || not (Bitvector.get unstable node_id) then false else begin
- let parent = T.parent tree node in
+ let states_by_rank = Ata.get_states_by_rank auto in
+ let td_todo = states_by_rank.(i) in
+ let bu_todo =
+ if i == Array.length states_by_rank - 1 then StateSet.empty
+ else
+ states_by_rank.(i+1)
+ in
+ let rec loop_td_and_bu node parent parent_sat =
+ if node == T.nil then StateSet.empty
+ else begin
+ let node_id = T.preorder tree node in
let fc = T.first_child tree node in
- let fc_id = T.preorder tree fc in
let ns = T.next_sibling tree node in
- let ns_id = T.preorder tree ns in
- let tag = T.tag tree node in
(* We enter the node from its parent *)
-
- let status0 =
- let c = unsafe_get_status status node_id in
- if c == dummy_status then
- (* first time we visit the node *)
- NodeStatus.make
- { sat = StateSet.empty;
- todo = init_todo;
- summary = NodeSummary.make
- (node == T.first_child tree parent) (* is_left *)
- (node == T.next_sibling tree parent) (* is_right *)
- (fc != T.nil) (* has_left *)
- (ns != T.nil) (* has_right *)
- (T.kind tree node) (* kind *)
- }
- else c
+ let summary =
+ let s = Array1.unsafe_get run.node_summaries node_id in
+ if s != 0 then s else
+ let s =
+ NodeSummary.make
+ (node_id == T.preorder tree (T.first_child tree parent)) (*is_left *)
+ (node_id == T.preorder tree (T.next_sibling tree parent))(*is_right *)
+ (fc != T.nil) (* has_left *)
+ (ns != T.nil) (* has_right *)
+ (T.kind tree node) (* kind *)
+ in
+ run.node_summaries.{node_id} <- s; s
in
- TRACE(html tree node _i status0 "Entering node");
-
+ let status0 = unsafe_get run.sat node_id in
(* get the node_statuses for the first child, next sibling and parent *)
- let ps = unsafe_get_status status (T.preorder tree parent) in
- let fcs = unsafe_get_status status fc_id in
- let nss = unsafe_get_status status ns_id in
(* evaluate the transitions with all this statuses *)
- let status1 = if status0.NodeStatus.node.todo == StateSet.empty then status0 else begin
- let status1 = eval_trans auto cache2 cache5 tag fcs nss ps status0 in
- TRACE(html tree node _i status1 "Updating transitions");
- (* update the cache if the status of the node changed *)
- if status1 != status0 then status.(node_id) <- status1;
- status1
- end
- in
- (* recursively traverse the first child *)
- let unstable_left = loop fc in
- (* here we re-enter the node from its first child,
- get the new status of the first child *)
- let fcs1 = unsafe_get_status status fc_id in
- (* update the status *)
- let status2 = if status1.NodeStatus.node.todo == StateSet.empty then status1 else begin
- let status2 = eval_trans auto cache2 cache5 tag fcs1 nss ps status1 in
- TRACE(html tree node _i status2 "Updating transitions (after first-child)");
- if status2 != status1 then status.(node_id) <- status2;
- status2
- end
+ let tag = T.tag tree node in
+ let status1 =
+ eval_trans
+ auto run.fetch_trans_cache run.td_cache tag
+ summary
+ (unsafe_get run.sat (T.preorder tree fc))
+ (unsafe_get run.sat (T.preorder tree ns))
+ parent_sat
+ status0 td_todo
in
- let unstable_right = loop ns in
- let nss1 = unsafe_get_status status ns_id in
- let status3 = if status2.NodeStatus.node.todo == StateSet.empty then status2 else begin
- let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
- TRACE(html tree node _i status3 "Updating transitions (after next-sibling)");
- if status3 != status2 then status.(node_id) <- status3;
- status3
+
+ (* update the cache if the status of the node changed
+ unsafe_set run.sat node_id status1 status0;*)
+ let fcs1 = loop_td_and_bu fc node status1 in
+ if bu_todo == StateSet.empty then begin
+ unsafe_set run.sat node_id status1 status0; (* write the td_states *)
+ loop_td_and_bu ns node status1 (* tail call *)
+ end else
+ let nss1 = loop_td_and_bu ns node status1 in
+ let status2 =
+ eval_trans auto run.fetch_trans_cache run.bu_cache tag
+ summary fcs1
+ nss1
+ parent_sat
+ status1 bu_todo
+ in
+ unsafe_set run.sat node_id status2 status0;
+ status2
end
- in
- let unstable_self =
- (* if either our left or right child is unstable or if we still have transitions
- pending, the current node is unstable *)
- unstable_left
- || unstable_right
- || StateSet.empty != status3.NodeStatus.node.todo
- in
- Bitvector.unsafe_set unstable node_id unstable_self;
- TRACE((if not unstable_self then
- Html.finalize_node
- node_id
- _i
- Ata.(StateSet.intersect status3.NodeStatus.node.sat (get_selecting_states auto))));
- unstable_self
- end
in
- run.redo <- loop (T.root tree);
- run.pass <- run.pass + 1
+ let _ = loop_td_and_bu (T.root tree) T.nil dummy_set in
+ run.pass <- run.pass + 2
let get_results run =
- let cache = run.status in
+ let cache = IFHTML((List.hd run.sat), run.sat) in
let auto = run.auto in
let tree = run.tree in
- let rec loop node acc =
- if node == T.nil then acc
- else
- let acc0 = loop (T.next_sibling tree node) acc in
- let acc1 = loop (T.first_child tree node) acc0 in
-
- if Ata.(
- StateSet.intersect
- cache.(T.preorder tree node).NodeStatus.node.sat
- (get_selecting_states auto)) then node::acc1
- else acc1
+ let sel_states = Ata.get_selecting_states auto in
+ let res = ref (L.create ()) in
+ let rec loop node =
+ if node != T.nil then begin
+ if StateSet.intersect sel_states cache.(T.preorder tree node) then
+ res := L.add node !res;
+ loop (T.first_child tree node);
+ loop (T.next_sibling tree node)
+ end
in
- loop (T.root tree) []
+ loop (T.root tree);
+ !res
let get_full_results run =
- let cache = run.status in
+ let cache = IFHTML((List.hd run.sat), run.sat) in
let auto = run.auto in
let tree = run.tree in
let res_mapper = Hashtbl.create MED_H_SIZE in
@@ -413,24 +318,26 @@ DEFINE AND_(t1,t2) =
(fun q -> Hashtbl.add res_mapper q [])
(Ata.get_selecting_states auto)
in
- let dummy = [ T.nil ] in
+ let dummy = L.create () in
+
let res_mapper = Cache.N1.create dummy in
let () =
StateSet.iter
- (fun q -> Cache.N1.add res_mapper (q :> int) [])
+ (fun q -> Cache.N1.add res_mapper (q :> int) (L.create()))
(Ata.get_selecting_states auto)
in
let rec loop node =
- if node != T.nil then
- let () = loop (T.next_sibling tree node) in
- let () = loop (T.first_child tree node) in
+ if node != T.nil then begin
StateSet.iter
(fun q ->
let res = Cache.N1.find res_mapper (q :> int) in
if res != dummy then
- Cache.N1.add res_mapper (q :> int) (node::res)
+ Cache.N1.add res_mapper (q :> int) (L.add node res)
)
- cache.(T.preorder tree node).NodeStatus.node.sat
+ cache.(T.preorder tree node);
+ loop (T.first_child tree node);
+ loop (T.next_sibling tree node)
+ end
in
loop (T.root tree);
(StateSet.fold_right
@@ -441,35 +348,40 @@ DEFINE AND_(t1,t2) =
let prepare_run run list =
let tree = run.tree in
let auto = run.auto in
- let status = run.status in
- List.iter (fun node ->
- let parent = T.parent tree node in
- let fc = T.first_child tree node in
- let ns = T.next_sibling tree node in
- let status0 =
- NodeStatus.make
- { sat = Ata.get_starting_states auto;
- todo =
- StateSet.diff (Ata.get_states auto) (Ata.get_starting_states auto);
- summary = NodeSummary.make
- (node == T.first_child tree parent) (* is_left *)
- (node == T.next_sibling tree parent) (* is_right *)
- (fc != T.nil) (* has_left *)
- (ns != T.nil) (* has_right *)
- (T.kind tree node) (* kind *)
- }
- in
+ let sat = IFHTML((List.hd run.sat), run.sat) in
+ let sat0 = Ata.get_starting_states auto in
+ L.iter (fun node ->
let node_id = T.preorder tree node in
- status.(node_id) <- status0) list
+ sat.(node_id) <- sat0) list
+
+ let tree_size = ref 0
+ let pass = ref 0
+
+let time f arg msg =
+ let t1 = Unix.gettimeofday () in
+ let r = f arg in
+ let t2 = Unix.gettimeofday () in
+ let time = (t2 -. t1) *. 1000. in
+ Printf.eprintf "%s: %fms%!" msg time;
+ r
+
let compute_run auto tree nodes =
+ pass := 0;
+ tree_size := T.size tree;
let run = make auto tree in
prepare_run run nodes;
- while run.redo do
- top_down run
+ let rank = Ata.get_max_rank auto in
+ while run.pass <= rank do
+ time top_down run ("Timing run number " ^ string_of_int run.pass ^ "/" ^ string_of_int (Ata.get_max_rank auto + 1));
+ IFHTML((run.sat <- (Array.copy (List.hd run.sat)) :: run.sat), ());
+ run.td_cache <- Cache.N6.create dummy_set;
+ run.bu_cache <- Cache.N6.create dummy_set;
done;
- TRACE(Html.gen_trace auto (module T : Tree.S with type t = T.t) tree);
+ IFHTML((run.sat <- List.tl run.sat), ());
+ pass := Ata.get_max_rank auto + 1;
+ IFHTML(Html_trace.gen_trace auto run.sat (module T : Tree.S with type t = T.t) tree ,());
run
let full_eval auto tree nodes =
@@ -478,6 +390,16 @@ DEFINE AND_(t1,t2) =
let eval auto tree nodes =
let r = compute_run auto tree nodes in
- get_results r
+ let nl = get_results r in
+ nl
+
+ let stats () = {
+ tree_size = !tree_size;
+ run = !pass;
+ fetch_trans_cache_access = !fetch_trans_cache_access;
+ fetch_trans_cache_hit = !fetch_trans_cache_hit;
+ eval_trans_cache_access = !eval_trans_cache_access;
+ eval_trans_cache_hit = !eval_trans_cache_hit;
+ }
end