X-Git-Url: http://git.nguyen.vg/gitweb/?p=tatoo.git;a=blobdiff_plain;f=src%2Fata.ml;h=df433926b41d263b3ec105f449d02b5fa043d59f;hp=62be713138fd0e884fe95b5bab9bd6ff0311710a;hb=41dd1fed04cabad212f10fce3484545f6e9d9444;hpb=e8132686a926c6be4599c7c2496d8e6a5b42a243 diff --git a/src/ata.ml b/src/ata.ml index 62be713..df43392 100644 --- a/src/ata.ml +++ b/src/ata.ml @@ -13,10 +13,6 @@ (* *) (***********************************************************************) -(* - Time-stamp: -*) - INCLUDE "utils.ml" open Format @@ -159,149 +155,6 @@ end = end -type t = { - id : Uid.t; - mutable states : StateSet.t; - mutable selection_states: StateSet.t; - transitions: (State.t, (QNameSet.t*SFormula.t) list) Hashtbl.t; - mutable cache2 : TransList.t Cache.N2.t; - mutable cache6 : (TransList.t*StateSet.t) Cache.N6.t; -} - -let next = Uid.make_maker () - -let dummy2 = TransList.cons - (Transition.make (State.dummy,QNameSet.empty, SFormula.false_)) - TransList.nil - -let dummy6 = (dummy2, StateSet.empty) - - -let create s ss = - let auto = { id = next (); - states = s; - selection_states = ss; - transitions = Hashtbl.create 17; - cache2 = Cache.N2.create dummy2; - cache6 = Cache.N6.create dummy6; - } - in - at_exit (fun () -> - let n6 = ref 0 in - let n2 = ref 0 in - Cache.N2.iteri (fun _ _ _ b -> if b then incr n2) auto.cache2; - Cache.N6.iteri (fun _ _ _ _ _ _ _ b -> if b then incr n6) auto.cache6; - Format.eprintf "INFO: automaton %i, cache2: %i entries, cache6: %i entries\n%!" - (auto.id :> int) !n2 !n6; - let c2l, c2u = Cache.N2.stats auto.cache2 in - let c6l, c6u = Cache.N6.stats auto.cache6 in - Format.eprintf "INFO: cache2: length: %i, used: %i, occupation: %f\n%!" c2l c2u (float c2u /. float c2l); - Format.eprintf "INFO: cache6: length: %i, used: %i, occupation: %f\n%!" c6l c6u (float c6u /. float c6l) - - ); - auto - -let reset a = - a.cache2 <- Cache.N2.create dummy2; - a.cache6 <- Cache.N6.create dummy6 - - -let get_trans_aux a tag states = - StateSet.fold (fun q acc0 -> - try - let trs = Hashtbl.find a.transitions q in - List.fold_left (fun acc1 (labs, phi) -> - if QNameSet.mem tag labs then TransList.cons (Transition.make (q, labs, phi)) acc1 else acc1) acc0 trs - with Not_found -> acc0 - ) states TransList.nil - - -let get_trans a tag states = - let trs = - Cache.N2.find a.cache2 - (tag.QName.id :> int) (states.StateSet.id :> int) - in - if trs == dummy2 then - let trs = get_trans_aux a tag states in - (Cache.N2.add - a.cache2 - (tag.QName.id :> int) - (states.StateSet.id :> int) trs; trs) - else trs - - - -let eval_form phi fcs nss ps ss is_left is_right has_left has_right kind = - let rec loop phi = - begin match SFormula.expr phi with - Formula.True | Formula.False -> phi - | Formula.Atom a -> - let p, b, q = Atom.node a in begin - match p with - | First_child -> - if b == StateSet.mem q fcs then SFormula.true_ else phi - | Next_sibling -> - if b == StateSet.mem q nss then SFormula.true_ else phi - | Parent | Previous_sibling -> - if b == StateSet.mem q ps then SFormula.true_ else phi - | Stay -> - if b == StateSet.mem q ss then SFormula.true_ else phi - | Is_first_child -> SFormula.of_bool (b == is_left) - | Is_next_sibling -> SFormula.of_bool (b == is_right) - | Is k -> SFormula.of_bool (b == (k == kind)) - | Has_first_child -> SFormula.of_bool (b == has_left) - | Has_next_sibling -> SFormula.of_bool (b == has_right) - end - | Formula.And(phi1, phi2) -> SFormula.and_ (loop phi1) (loop phi2) - | Formula.Or (phi1, phi2) -> SFormula.or_ (loop phi1) (loop phi2) - end - in - loop phi - -let int_of_conf is_left is_right has_left has_right kind = - ((Obj.magic kind) lsl 4) lor - ((Obj.magic is_left) lsl 3) lor - ((Obj.magic is_right) lsl 2) lor - ((Obj.magic has_left) lsl 1) lor - (Obj.magic has_right) - -let eval_trans auto ltrs fcs nss ps ss is_left is_right has_left has_right kind = - let n = int_of_conf is_left is_right has_left has_right kind - and k = (fcs.StateSet.id :> int) - and l = (nss.StateSet.id :> int) - and m = (ps.StateSet.id :> int) in - let rec loop ltrs ss = - let i = (ltrs.TransList.id :> int) - and j = (ss.StateSet.id :> int) in - let (new_ltrs, new_ss) as res = - let res = Cache.N6.find auto.cache6 i j k l m n in - if res == dummy6 then - let res = - TransList.fold (fun trs (acct, accs) -> - let q, lab, phi = Transition.node trs in - if StateSet.mem q accs then (acct, accs) else - let new_phi = - eval_form - phi fcs nss ps accs - is_left is_right has_left has_right kind - in - if SFormula.is_true new_phi then - (acct, StateSet.add q accs) - else if SFormula.is_false new_phi then - (acct, accs) - else - let new_tr = Transition.make (q, lab, new_phi) in - (TransList.cons new_tr acct, accs) - ) ltrs (TransList.nil, ss) - in - Cache.N6.add auto.cache6 i j k l m n res; res - else - res - in - if new_ss == ss then res else - loop new_ltrs new_ss - in - loop ltrs ss type node_summary = int let dummy_summary = -1 @@ -361,6 +214,90 @@ module Config = Hcons.Make(struct end ) +type t = { + id : Uid.t; + mutable states : StateSet.t; + mutable selection_states: StateSet.t; + transitions: (State.t, (QNameSet.t*SFormula.t) list) Hashtbl.t; + mutable cache2 : TransList.t Cache.N2.t; + mutable cache4 : Config.t Cache.N4.t; +} + +let next = Uid.make_maker () + +let dummy2 = TransList.cons + (Transition.make (State.dummy,QNameSet.empty, SFormula.false_)) + TransList.nil + + + +let dummy_config = + Config.make { sat = StateSet.empty; + unsat = StateSet.empty; + todo = TransList.nil; + summary = dummy_summary + } + + +let create s ss = + let auto = { id = next (); + states = s; + selection_states = ss; + transitions = Hashtbl.create 17; + cache2 = Cache.N2.create dummy2; + cache4 = Cache.N4.create dummy_config; + } + in + at_exit (fun () -> + let n4 = ref 0 in + let n2 = ref 0 in + Cache.N2.iteri (fun _ _ _ b -> if b then incr n2) auto.cache2; + Cache.N4.iteri (fun _ _ _ _ _ b -> if b then incr n4) auto.cache4; + Logger.msg `STATS "automaton %i, cache2: %i entries, cache6: %i entries" + (auto.id :> int) !n2 !n4; + let c2l, c2u = Cache.N2.stats auto.cache2 in + let c4l, c4u = Cache.N4.stats auto.cache4 in + Logger.msg `STATS + "cache2: length: %i, used: %i, occupation: %f" + c2l c2u (float c2u /. float c2l); + Logger.msg `STATS + "cache4: length: %i, used: %i, occupation: %f" + c4l c4u (float c4u /. float c4l) + + ); + auto + +let reset a = + a.cache4 <- Cache.N4.create (Cache.N4.dummy a.cache4) + +let full_reset a = + reset a; + a.cache2 <- Cache.N2.create (Cache.N2.dummy a.cache2) + + +let get_trans_aux a tag states = + StateSet.fold (fun q acc0 -> + try + let trs = Hashtbl.find a.transitions q in + List.fold_left (fun acc1 (labs, phi) -> + if QNameSet.mem tag labs then TransList.cons (Transition.make (q, labs, phi)) acc1 else acc1) acc0 trs + with Not_found -> acc0 + ) states TransList.nil + + +let get_trans a tag states = + let trs = + Cache.N2.find a.cache2 + (tag.QName.id :> int) (states.StateSet.id :> int) + in + if trs == dummy2 then + let trs = get_trans_aux a tag states in + (Cache.N2.add + a.cache2 + (tag.QName.id :> int) + (states.StateSet.id :> int) trs; trs) + else trs + let simplify_atom atom pos q { Config.node=config; _ } = if (pos && StateSet.mem q config.sat) || ((not pos) && StateSet.mem q config.unsat) then SFormula.true_ @@ -368,8 +305,7 @@ let simplify_atom atom pos q { Config.node=config; _ } = || ((not pos) && StateSet.mem q config.sat) then SFormula.false_ else atom - -let eval_form2 phi fcs nss ps ss summary = +let eval_form phi fcs nss ps ss summary = let rec loop phi = begin match SFormula.expr phi with Formula.True | Formula.False -> phi @@ -395,38 +331,48 @@ let eval_form2 phi fcs nss ps ss summary = let eval_trans auto fcs nss ps ss = + let fcsid = (fcs.Config.id :> int) in + let nssid = (nss.Config.id :> int) in + let psid = (ps.Config.id :> int) in let rec loop old_config = - let { sat = old_sat; - unsat = old_unsat; - todo = old_todo; - summary = old_summary } = old_config.Config.node - in - let sat, unsat, removed, kept, todo = - TransList.fold - (fun trs acc -> - let q, lab, phi = Transition.node trs in - let a_sat, a_unsat, a_rem, a_kept, a_todo = acc in - if StateSet.mem q a_sat || StateSet.mem q a_unsat then acc else - let new_phi = - eval_form2 phi fcs nss ps old_config old_summary - in - if SFormula.is_true new_phi then - StateSet.add q a_sat, a_unsat, StateSet.add q a_rem, a_kept, a_todo - else if SFormula.is_false new_phi then - a_sat, StateSet.add q a_unsat, StateSet.add q a_rem, a_kept, a_todo - else - let new_tr = Transition.make (q, lab, new_phi) in - (a_sat, a_unsat, a_rem, StateSet.add q a_kept, (TransList.cons new_tr a_todo)) - ) old_todo (old_sat, old_unsat, StateSet.empty, StateSet.empty, TransList.nil) + let oid = (old_config.Config.id :> int) in + let res = + let res = Cache.N4.find auto.cache4 oid fcsid nssid psid in + if res != dummy_config then res + else + let { sat = old_sat; + unsat = old_unsat; + todo = old_todo; + summary = old_summary } = old_config.Config.node + in + let sat, unsat, removed, kept, todo = + TransList.fold + (fun trs acc -> + let q, lab, phi = Transition.node trs in + let a_sat, a_unsat, a_rem, a_kept, a_todo = acc in + if StateSet.mem q a_sat || StateSet.mem q a_unsat then acc else + let new_phi = + eval_form phi fcs nss ps old_config old_summary + in + if SFormula.is_true new_phi then + StateSet.add q a_sat, a_unsat, StateSet.add q a_rem, a_kept, a_todo + else if SFormula.is_false new_phi then + a_sat, StateSet.add q a_unsat, StateSet.add q a_rem, a_kept, a_todo + else + let new_tr = Transition.make (q, lab, new_phi) in + (a_sat, a_unsat, a_rem, StateSet.add q a_kept, (TransList.cons new_tr a_todo)) + ) old_todo (old_sat, old_unsat, StateSet.empty, StateSet.empty, TransList.nil) + in + (* States that have been removed from the todo list and not kept are now + unsatisfiable *) + let unsat = StateSet.union unsat (StateSet.diff removed kept) in + (* States that were found once to be satisfiable remain so *) + let unsat = StateSet.diff unsat sat in + let new_config = Config.make { old_config.Config.node with sat; unsat; todo; } in + Cache.N4.add auto.cache4 oid fcsid nssid psid new_config; + new_config in - (* States that have been removed from the todo list and not kept are now - unsatisfiable *) - let unsat = StateSet.union unsat (StateSet.diff removed kept) in - (* States that were found once to be satisfiable remain so *) - let unsat = StateSet.diff unsat sat in - let new_config = Config.make { sat; unsat; todo ; summary = old_summary } in - if sat == old_sat && unsat == old_unsat && todo == old_todo then new_config - else loop new_config + if res == old_config then res else loop res in loop ss @@ -466,7 +412,7 @@ let _flush_str_fmt () = pp_print_flush _str_fmt (); let print fmt a = fprintf fmt - "\nInternal UID: %i@\n\ + "Internal UID: %i@\n\ States: %a@\n\ Selection states: %a@\n\ Alternating transitions:@\n" @@ -495,14 +441,15 @@ let print fmt a = in let line = Pretty.line (max_all + max_pre + 6) in let prev_q = ref State.dummy in + fprintf fmt "%s@\n" line; List.iter (fun (q, s1, s2, s3) -> - if !prev_q != q && !prev_q != State.dummy then fprintf fmt " %s\n%!" line; + if !prev_q != q && !prev_q != State.dummy then fprintf fmt "%s@\n" line; prev_q := q; - fprintf fmt " %s, %s" s1 s2; + fprintf fmt "%s, %s" s1 s2; fprintf fmt "%s" (Pretty.padding (max_pre - Pretty.length s1 - Pretty.length s2)); - fprintf fmt " %s %s@\n%!" Pretty.right_arrow s3; + fprintf fmt " %s %s@\n" Pretty.right_arrow s3; ) strs_strings; - fprintf fmt " %s\n%!" line + fprintf fmt "%s@\n" line (* [complete transitions a] ensures that for each state q @@ -537,7 +484,6 @@ let cleanup_states a = in StateSet.iter loop a.selection_states; let unused = StateSet.diff a.states !memo in - eprintf "Unused states %a\n%!" StateSet.print unused; StateSet.iter (fun q -> Hashtbl.remove a.transitions q) unused; a.states <- !memo @@ -547,10 +493,6 @@ let cleanup_states a = *) let normalize_negations auto = - eprintf "Automaton before normalize_trans:\n"; - print err_formatter auto; - eprintf "--------------------\n%!"; - let memo_state = Hashtbl.create 17 in let todo = Queue.create () in let rec flip b f =