type stats = { run : int;
tree_size : int;
- cache2_access : int;
- cache2_hit : int;
- cache5_access : int;
- cache5_hit : int;
+ fetch_trans_cache_access : int;
+ fetch_trans_cache_hit : int;
+ eval_trans_cache_access : int;
+ eval_trans_cache_hit : int;
}
-let cache2_hit = ref 0
-let cache2_access = ref 0
-let cache5_hit = ref 0
-let cache5_access = ref 0
+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 () =
- cache2_hit := 0;
- cache2_access := 0;
- cache5_hit := 0;
- cache5_access := 0
+ fetch_trans_cache_hit := 0;
+ fetch_trans_cache_access := 0;
+ eval_trans_cache_hit := 0;
+ eval_trans_cache_access := 0
module Make (T : Tree.S) =
type t = int
let dummy = -1
(*
- 4444444444443210
- 4 -> kind
- 3 -> is_left
- 2 -> is_right
+ 333333333333333210
+ 3333 -> kind
+ 2 -> has_right
1 -> has_left
- 0 -> has_right
+ 0 -> is_left/is_right
*)
+ let is_left (s : t) : bool =
+ s land 1 == 1
- let has_right (s : t) : bool =
- Obj.magic (s land 1)
+ let is_right (s : t) : bool =
+ s land 1 == 0
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)
+ (s lsr 1) land 1 == 1
- let is_left (s : t) : bool =
- Obj.magic ((s lsr 3) land 1)
+ let has_right (s : t) : bool =
+ (s lsr 2) land 1 == 1
let kind (s : t) : Tree.NodeKind.t =
- Obj.magic (s lsr 4)
+ Obj.magic (s lsr 3)
- 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
+ let make is_left has_left has_right kind =
+ (int_of_bool is_left) lor
((int_of_bool has_left) lsl 1) lor
- (int_of_bool has_right)
-
+ ((int_of_bool has_right) lsl 2) lor
+ ((Obj.magic kind) lsl 3)
end
type node_status = {
rank : int;
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 *)
+ (* 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 *)
(* The automaton to be run *)
status : NodeStatus.t array;
(* A mapping from node preorders to NodeStatus *)
- mutable redo : bool;
- (* A boolean indicating whether the run is incomplete *)
mutable pass : int;
- (* The number of times this run was updated *)
- mutable cache2 : Ata.Formula.t Cache.N2.t;
+ 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 : NodeStatus.t Cache.N5.t;
+ mutable bu_cache : NodeStatus.t Cache.N5.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
tree = tree;
auto = auto;
status = Array.create len dummy_status;
- redo = true;
pass = 0;
- cache2 = Cache.N2.create dummy_form;
- cache5 = Cache.N5.create dummy_status;
+ fetch_trans_cache = Cache.N2.create dummy_form;
+ td_cache = Cache.N5.create dummy_status;
+ bu_cache = Cache.N5.create dummy_status;
}
let get_status a i =
StateSet.print config.todo
i
- let get_form cache2 auto tag q =
+ let get_form fetch_trans_cache auto tag q =
let phi =
- incr cache2_access;
- 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 begin
- incr cache2_hit;
+ incr fetch_trans_cache_hit;
phi
end
loop phi
- let eval_trans_aux auto cache2 tag fcs nss ps old_status =
+ let eval_trans_aux auto fetch_trans_cache tag fcs nss ps old_status =
let { sat = old_sat;
todo = old_todo;
summary = old_summary } as os_node = old_status.NodeStatus.node
let sat, todo =
StateSet.fold (fun q ((a_sat, a_todo) as acc) ->
let phi =
- get_form cache2 auto tag q
+ get_form fetch_trans_cache auto tag q
in
let v = eval_form phi fcs nss ps old_status old_summary in
else old_status
- 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 fetch_trans_cache tag fcs nss ps old_status =
+ let new_status =
+ eval_trans_aux auto fetch_trans_cache tag fcs nss ps old_status
in
+ if new_status == old_status then old_status else
+ eval_trans_fix auto fetch_trans_cache tag fcs nss ps new_status
+
+
+ let eval_trans auto fetch_trans_cache td_cache tag fcs nss ps ss =
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
let tagid = (tag.QName.id :> int) in
- let res = Cache.N5.find cache5 tagid ssid fcsid nssid psid in
- incr cache5_access;
- if res != dummy_status then begin incr cache5_hit; res end
- else let new_status = loop ss in
- Cache.N5.add cache5 tagid ssid fcsid nssid psid new_status;
+ let res = Cache.N5.find td_cache tagid ssid fcsid nssid psid in
+ incr eval_trans_cache_access;
+ if res != dummy_status then begin incr eval_trans_cache_hit; res end
+ else let new_status = eval_trans_fix auto fetch_trans_cache tag fcs nss ps ss in
+ Cache.N5.add td_cache tagid ssid fcsid nssid psid new_status;
new_status
-
-
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 fetch_trans_cache = run.fetch_trans_cache in
+ let td_cache = run.td_cache in
+ let bu_cache = run.bu_cache 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 + 1 = Array.length states_by_rank then StateSet.empty
else
states_by_rank.(i+1)
in
- let rec loop node =
- let node_id = T.preorder tree node in
- if node != T.nil then begin
+ let rec loop_td_and_bu node =
+ if node == T.nil then () else begin
+ let node_id = T.preorder tree node in
let parent = T.parent tree node in
let fc = T.first_child tree node in
let fc_id = T.preorder tree fc in
{ rank = i;
sat = c.NodeStatus.node.sat;
todo = td_todo;
- summary = let summary = c.NodeStatus.node.summary
- in
- if summary != NodeSummary.dummy then summary
- else
- 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 *)
+ summary =
+ let summary = c.NodeStatus.node.summary in
+ if summary != NodeSummary.dummy then summary
+ else
+ NodeSummary.make
+ (node != T.next_sibling tree parent)
+ (fc != T.nil) (* has_left *)
+ (ns != T.nil) (* has_right *)
+ (T.kind tree node) (* kind *)
}
else c
in
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
+ let status1 = eval_trans auto fetch_trans_cache td_cache tag fcs nss ps status0 in
(* 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 () = loop fc in
+ let () = loop_td_and_bu 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
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
+ let status2 = eval_trans auto fetch_trans_cache bu_cache tag fcs1 nss ps status1 in
if status2 != status1 then status.(node_id) <- status2;
status2
end
in
- let () = loop ns in
+ let () = loop_td_and_bu ns in
let nss1 = unsafe_get_status status ns_id in
if status2.NodeStatus.node.todo != StateSet.empty then
- let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
+ let status3 = eval_trans auto fetch_trans_cache bu_cache tag fcs1 nss1 ps status2 in
if status3 != status2 then status.(node_id) <- status3
end
+ and loop_td_only node =
+ if node == T.nil then () else begin
+ let node_id = T.preorder tree node in
+ let parent = T.parent 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.NodeStatus.node.rank < i then
+ (* first time we visit the node during this run *)
+ NodeStatus.make
+ { rank = i;
+ sat = c.NodeStatus.node.sat;
+ todo = td_todo;
+ summary =
+ let summary = c.NodeStatus.node.summary in
+ if summary != NodeSummary.dummy then summary
+ else
+ NodeSummary.make
+ (node != T.next_sibling tree parent)
+ (fc != T.nil) (* has_left *)
+ (ns != T.nil) (* has_right *)
+ (T.kind tree node) (* kind *)
+ }
+ else c
+ 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 *)
+ if status0.NodeStatus.node.todo != StateSet.empty then begin
+ let status1 = eval_trans auto fetch_trans_cache td_cache tag fcs nss ps status0 in
+ (* update the cache if the status of the node changed *)
+ if status1 != status0 then status.(node_id) <- status1;
+ end;
+ (* recursively traverse the first child *)
+ loop_td_only fc;
+ loop_td_only ns
+ end
in
- loop (T.root tree)
+ if bu_todo == StateSet.empty then loop_td_only (T.root tree)
+ else loop_td_and_bu (T.root tree)
let get_results run =
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 *)
+ (node != T.next_sibling tree parent) (* is_left *)
(fc != T.nil) (* has_left *)
(ns != T.nil) (* has_right *)
(T.kind tree node) (* kind *)
prepare_run run nodes;
for i = 0 to Ata.get_max_rank auto do
top_down run;
- run.pass <- run.pass + 1
+ run.pass <- run.pass + 1;
+ run.td_cache <- Cache.N5.create dummy_status;
+ run.bu_cache <- Cache.N5.create dummy_status;
done;
pass := Ata.get_max_rank auto + 1;
IFTRACE(Html.gen_trace auto (module T : Tree.S with type t = T.t) tree);
let stats () = {
tree_size = !tree_size;
run = !pass;
- cache2_access = !cache2_access;
- cache2_hit = !cache2_hit;
- cache5_access = !cache5_access;
- cache5_hit = !cache5_hit;
+ 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
projects / tatoo.git / blobdiff