author | boehmes |
Sat, 29 Aug 2009 21:57:06 +0200 | |
changeset 32451 | 8f0dc876fb1b |
parent 32327 | 0971cc0b6a57 |
child 32510 | 1b56f8b1e5cc |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/ATP_Manager/atp_manager.ML |
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Author: Fabian Immler, TU Muenchen |
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ATP threads are registered here. |
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Threads with the same birth-time are seen as one group. |
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All threads of a group are killed when one thread of it has been successful, |
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or after a certain time, |
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or when the maximum number of threads exceeds; then the oldest thread is killed. |
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*) |
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signature ATP_MANAGER = |
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sig |
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val get_atps: unit -> string |
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val set_atps: string -> unit |
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val get_max_atps: unit -> int |
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val set_max_atps: int -> unit |
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val get_timeout: unit -> int |
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val set_timeout: int -> unit |
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val get_full_types: unit -> bool |
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val set_full_types: bool -> unit |
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val kill: unit -> unit |
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val info: unit -> unit |
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val messages: int option -> unit |
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type prover = int -> (thm * (string * int)) list option -> |
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(thm * (string * int)) list option -> string -> int -> |
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Proof.context * (thm list * thm) -> |
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bool * (string * string list) * string * string vector * (thm * (string * int)) list |
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val add_prover: string -> prover -> theory -> theory |
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val print_provers: theory -> unit |
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val get_prover: string -> theory -> prover option |
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val sledgehammer: string list -> Proof.state -> unit |
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end; |
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structure AtpManager: ATP_MANAGER = |
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struct |
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(** preferences **) |
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val message_store_limit = 20; |
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val message_display_limit = 5; |
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local |
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val atps = ref "e remote_vampire"; |
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val max_atps = ref 5; (* ~1 means infinite number of atps *) |
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val timeout = ref 60; |
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val full_types = ref false; |
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in |
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fun get_atps () = CRITICAL (fn () => ! atps); |
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fun set_atps str = CRITICAL (fn () => atps := str); |
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fun get_max_atps () = CRITICAL (fn () => ! max_atps); |
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fun set_max_atps number = CRITICAL (fn () => max_atps := number); |
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fun get_timeout () = CRITICAL (fn () => ! timeout); |
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fun set_timeout time = CRITICAL (fn () => timeout := time); |
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fun get_full_types () = CRITICAL (fn () => ! full_types); |
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fun set_full_types bool = CRITICAL (fn () => full_types := bool); |
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val _ = |
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ProofGeneralPgip.add_preference Preferences.category_proof |
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(Preferences.string_pref atps |
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"ATP: provers" "Default automatic provers (separated by whitespace)"); |
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val _ = |
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ProofGeneralPgip.add_preference Preferences.category_proof |
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(Preferences.int_pref max_atps |
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"ATP: maximum number" "How many provers may run in parallel"); |
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val _ = |
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ProofGeneralPgip.add_preference Preferences.category_proof |
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(Preferences.int_pref timeout |
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"ATP: timeout" "ATPs will be interrupted after this time (in seconds)"); |
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val _ = |
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ProofGeneralPgip.add_preference Preferences.category_proof |
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(Preferences.bool_pref full_types |
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"ATP: full types" "ATPs will use full type information"); |
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||
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end; |
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(** thread management **) |
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(* data structures over threads *) |
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structure ThreadHeap = HeapFun |
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( |
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type elem = Time.time * Thread.thread; |
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fun ord ((a, _), (b, _)) = Time.compare (a, b); |
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); |
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fun lookup_thread xs = AList.lookup Thread.equal xs; |
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fun delete_thread xs = AList.delete Thread.equal xs; |
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fun update_thread xs = AList.update Thread.equal xs; |
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(* state of thread manager *) |
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datatype T = State of |
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{managing_thread: Thread.thread option, |
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timeout_heap: ThreadHeap.T, |
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oldest_heap: ThreadHeap.T, |
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active: (Thread.thread * (Time.time * Time.time * string)) list, |
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cancelling: (Thread.thread * (Time.time * Time.time * string)) list, |
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messages: string list, |
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store: string list}; |
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fun make_state managing_thread timeout_heap oldest_heap active cancelling messages store = |
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State {managing_thread = managing_thread, timeout_heap = timeout_heap, oldest_heap = oldest_heap, |
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active = active, cancelling = cancelling, messages = messages, store = store}; |
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val state = Synchronized.var "atp_manager" |
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(make_state NONE ThreadHeap.empty ThreadHeap.empty [] [] [] []); |
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(* unregister thread *) |
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fun unregister (success, message) thread = Synchronized.change state |
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(fn state as State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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(case lookup_thread active thread of |
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SOME (birthtime, _, description) => |
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let |
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val (group, active') = |
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if success then List.partition (fn (_, (tb, _, _)) => tb = birthtime) active |
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else List.partition (fn (th, _) => Thread.equal (th, thread)) active |
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val now = Time.now () |
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val cancelling' = |
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fold (fn (th, (tb, _, desc)) => update_thread (th, (tb, now, desc))) group cancelling |
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val message' = description ^ "\n" ^ message ^ |
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(if length group <= 1 then "" |
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else "\nInterrupted " ^ string_of_int (length group - 1) ^ " other group members") |
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val store' = message' :: |
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(if length store <= message_store_limit then store |
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else #1 (chop message_store_limit store)) |
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in make_state |
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managing_thread timeout_heap oldest_heap active' cancelling' (message' :: messages) store' |
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end |
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| NONE => state)); |
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(* kill excessive atp threads *) |
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fun excessive_atps active = |
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let val max = get_max_atps () |
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in length active > max andalso max > ~1 end; |
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local |
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fun kill_oldest () = |
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let exception Unchanged in |
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Synchronized.change_result state |
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(fn State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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if ThreadHeap.is_empty oldest_heap orelse not (excessive_atps active) |
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then raise Unchanged |
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else |
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let val ((_, oldest_thread), oldest_heap') = ThreadHeap.min_elem oldest_heap |
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in (oldest_thread, |
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make_state managing_thread timeout_heap oldest_heap' active cancelling messages store) end) |
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|> unregister (false, "Interrupted (maximum number of ATPs exceeded)") |
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handle Unchanged => () |
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end; |
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|
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in |
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|
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fun kill_excessive () = |
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let val State {active, ...} = Synchronized.value state |
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in if excessive_atps active then (kill_oldest (); kill_excessive ()) else () end; |
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|
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end; |
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177 |
|
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fun print_new_messages () = |
179 |
let val to_print = Synchronized.change_result state |
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(fn State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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(messages, make_state managing_thread timeout_heap oldest_heap active cancelling [] store)) |
30800 | 182 |
in |
183 |
if null to_print then () |
|
184 |
else priority ("Sledgehammer: " ^ space_implode "\n\n" to_print) |
|
185 |
end; |
|
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|
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187 |
|
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(* start a watching thread -- only one may exist *) |
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|
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fun check_thread_manager () = Synchronized.change state |
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(fn State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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if (case managing_thread of SOME thread => Thread.isActive thread | NONE => false) |
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then make_state managing_thread timeout_heap oldest_heap active cancelling messages store |
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else let val managing_thread = SOME (SimpleThread.fork false (fn () => |
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let |
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196 |
val min_wait_time = Time.fromMilliseconds 300 |
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val max_wait_time = Time.fromSeconds 10 |
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(* wait for next thread to cancel, or maximum*) |
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fun time_limit (State {timeout_heap, ...}) = |
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(case try ThreadHeap.min timeout_heap of |
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NONE => SOME (Time.+ (Time.now (), max_wait_time)) |
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| SOME (time, _) => SOME time) |
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|
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(* action: find threads whose timeout is reached, and interrupt cancelling threads *) |
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206 |
fun action (State {managing_thread, timeout_heap, oldest_heap, active, cancelling, |
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207 |
messages, store}) = |
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208 |
let val (timeout_threads, timeout_heap') = |
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209 |
ThreadHeap.upto (Time.now (), Thread.self ()) timeout_heap |
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210 |
in |
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if null timeout_threads andalso null cancelling andalso not (excessive_atps active) |
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then NONE |
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213 |
else |
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214 |
let |
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val _ = List.app (SimpleThread.interrupt o #1) cancelling |
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val cancelling' = filter (Thread.isActive o #1) cancelling |
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217 |
val state' = make_state |
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218 |
managing_thread timeout_heap' oldest_heap active cancelling' messages store |
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219 |
in SOME (map #2 timeout_threads, state') end |
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220 |
end |
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221 |
in |
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222 |
while Synchronized.change_result state |
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223 |
(fn st as |
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224 |
State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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225 |
if (null active) andalso (null cancelling) andalso (null messages) |
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226 |
then (false, make_state NONE timeout_heap oldest_heap active cancelling messages store) |
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227 |
else (true, st)) |
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228 |
do |
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229 |
(Synchronized.timed_access state time_limit action |
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230 |
|> these |
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231 |
|> List.app (unregister (false, "Interrupted (reached timeout)")); |
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232 |
kill_excessive (); |
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233 |
print_new_messages (); |
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234 |
(*give threads time to respond to interrupt*) |
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235 |
OS.Process.sleep min_wait_time) |
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236 |
end)) |
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237 |
in make_state managing_thread timeout_heap oldest_heap active cancelling messages store end); |
28582 | 238 |
|
239 |
||
240 |
(* thread is registered here by sledgehammer *) |
|
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241 |
|
28582 | 242 |
fun register birthtime deadtime (thread, desc) = |
30798 | 243 |
(Synchronized.change state |
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244 |
(fn State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
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245 |
let |
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246 |
val timeout_heap' = ThreadHeap.insert (deadtime, thread) timeout_heap |
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247 |
val oldest_heap' = ThreadHeap.insert (birthtime, thread) oldest_heap |
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248 |
val active' = update_thread (thread, (birthtime, deadtime, desc)) active |
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|
249 |
in make_state managing_thread timeout_heap' oldest_heap' active' cancelling messages store end); |
30798 | 250 |
check_thread_manager ()); |
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251 |
|
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252 |
|
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253 |
|
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|
254 |
(** user commands **) |
28582 | 255 |
|
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256 |
(* kill: move all threads to cancelling *) |
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|
257 |
|
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|
258 |
fun kill () = Synchronized.change state |
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259 |
(fn State {managing_thread, timeout_heap, oldest_heap, active, cancelling, messages, store} => |
28582 | 260 |
let val formerly_active = map (fn (th, (tb, _, desc)) => (th, (tb, Time.now (), desc))) active |
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261 |
in make_state |
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|
262 |
managing_thread timeout_heap oldest_heap [] (formerly_active @ cancelling) messages store |
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263 |
end); |
28582 | 264 |
|
265 |
||
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266 |
(* ATP info *) |
28582 | 267 |
|
268 |
fun info () = |
|
269 |
let |
|
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270 |
val State {active, cancelling, ...} = Synchronized.value state |
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271 |
|
28571 | 272 |
fun running_info (_, (birth_time, dead_time, desc)) = "Running: " |
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273 |
^ (string_of_int o Time.toSeconds) (Time.- (Time.now (), birth_time)) |
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274 |
^ " s -- " |
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|
275 |
^ (string_of_int o Time.toSeconds) (Time.- (dead_time, Time.now ())) |
28571 | 276 |
^ " s to live:\n" ^ desc |
277 |
fun cancelling_info (_, (_, dead_time, desc)) = "Trying to interrupt thread since " |
|
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278 |
^ (string_of_int o Time.toSeconds) (Time.- (Time.now (), dead_time)) |
28571 | 279 |
^ " s:\n" ^ desc |
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280 |
|
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281 |
val running = |
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|
282 |
if null active then "No ATPs running." |
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|
283 |
else space_implode "\n\n" ("Running ATPs:" :: map running_info active) |
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|
284 |
val interrupting = |
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|
285 |
if null cancelling then "" |
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|
286 |
else space_implode "\n\n" |
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|
287 |
("Trying to interrupt the following ATPs:" :: map cancelling_info cancelling) |
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|
288 |
|
28582 | 289 |
in writeln (running ^ "\n" ^ interrupting) end; |
290 |
||
29112
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|
291 |
fun messages opt_limit = |
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|
292 |
let |
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|
293 |
val limit = the_default message_display_limit opt_limit; |
29620 | 294 |
val State {store = msgs, ...} = Synchronized.value state |
29112
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|
295 |
val header = "Recent ATP messages" ^ |
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|
296 |
(if length msgs <= limit then ":" else " (" ^ string_of_int limit ^ " displayed):"); |
29116 | 297 |
in writeln (space_implode "\n\n" (header :: #1 (chop limit msgs))) end; |
29112
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|
298 |
|
28582 | 299 |
|
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|
300 |
|
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|
301 |
(** The Sledgehammer **) |
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302 |
|
28582 | 303 |
(* named provers *) |
28484 | 304 |
|
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|
305 |
type prover = int -> (thm * (string * int)) list option -> |
31752
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306 |
(thm * (string * int)) list option -> string -> int -> |
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Proof.context * (thm list * thm) -> |
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bool * (string * string list) * string * string vector * (thm * (string * int)) list |
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309 |
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fun err_dup_prover name = error ("Duplicate prover: " ^ quote name); |
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311 |
|
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structure Provers = TheoryDataFun |
313 |
( |
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type T = (prover * stamp) Symtab.table |
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val empty = Symtab.empty |
316 |
val copy = I |
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val extend = I |
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fun merge _ tabs : T = Symtab.merge (eq_snd op =) tabs |
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handle Symtab.DUP dup => err_dup_prover dup |
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); |
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fun add_prover name prover thy = |
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Provers.map (Symtab.update_new (name, (prover, stamp ()))) thy |
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handle Symtab.DUP dup => err_dup_prover dup; |
325 |
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fun print_provers thy = Pretty.writeln |
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(Pretty.strs ("external provers:" :: sort_strings (Symtab.keys (Provers.get thy)))); |
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fun get_prover name thy = case Symtab.lookup (Provers.get thy) name of |
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330 |
NONE => NONE |
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| SOME (prover, _) => SOME prover; |
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332 |
|
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333 |
(* start prover thread *) |
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fun start_prover name birthtime deadtime i proof_state = |
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(case get_prover name (Proof.theory_of proof_state) of |
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NONE => warning ("Unknown external prover: " ^ quote name) |
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| SOME prover => |
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339 |
let |
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val (ctxt, (_, goal)) = Proof.get_goal proof_state |
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341 |
val desc = |
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"external prover " ^ quote name ^ " for subgoal " ^ string_of_int i ^ ":\n" ^ |
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Syntax.string_of_term ctxt (Thm.term_of (Thm.cprem_of goal i)) |
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344 |
val _ = SimpleThread.fork true (fn () => |
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345 |
let |
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val _ = register birthtime deadtime (Thread.self (), desc) |
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val result = |
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let val (success, (message, _), _, _, _) = |
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349 |
prover (get_timeout ()) NONE NONE name i (Proof.get_goal proof_state) |
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350 |
in (success, message) end |
28835 | 351 |
handle ResHolClause.TOO_TRIVIAL |
352 |
=> (true, "Empty clause: Try this command: " ^ Markup.markup Markup.sendback "apply metis") |
|
353 |
| ERROR msg |
|
354 |
=> (false, "Error: " ^ msg) |
|
29620 | 355 |
val _ = unregister result (Thread.self ()) |
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356 |
in () end handle Interrupt => ()) |
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357 |
in () end); |
28582 | 358 |
|
359 |
||
360 |
(* sledghammer for first subgoal *) |
|
361 |
||
362 |
fun sledgehammer names proof_state = |
|
363 |
let |
|
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364 |
val provers = |
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|
365 |
if null names then String.tokens (Symbol.is_ascii_blank o String.str) (get_atps ()) |
28582 | 366 |
else names |
367 |
val birthtime = Time.now () |
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368 |
val deadtime = Time.+ (birthtime, Time.fromSeconds (get_timeout ())) |
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369 |
in List.app (fn name => start_prover name birthtime deadtime 1 proof_state) provers end; |
28582 | 370 |
|
371 |
||
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|
372 |
|
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|
373 |
(** Isar command syntax **) |
28582 | 374 |
|
375 |
local structure K = OuterKeyword and P = OuterParse in |
|
376 |
||
377 |
val _ = |
|
378 |
OuterSyntax.improper_command "atp_kill" "kill all managed provers" K.diag |
|
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|
379 |
(Scan.succeed (Toplevel.no_timing o Toplevel.imperative kill)); |
28582 | 380 |
|
381 |
val _ = |
|
382 |
OuterSyntax.improper_command "atp_info" "print information about managed provers" K.diag |
|
383 |
(Scan.succeed (Toplevel.no_timing o Toplevel.imperative info)); |
|
384 |
||
385 |
val _ = |
|
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|
386 |
OuterSyntax.improper_command "atp_messages" "print recent messages issued by managed provers" K.diag |
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|
387 |
(Scan.option (P.$$$ "(" |-- P.nat --| P.$$$ ")") >> |
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|
388 |
(fn limit => Toplevel.no_timing o Toplevel.imperative (fn () => messages limit))); |
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|
389 |
|
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|
390 |
val _ = |
28582 | 391 |
OuterSyntax.improper_command "print_atps" "print external provers" K.diag |
392 |
(Scan.succeed (Toplevel.no_timing o Toplevel.unknown_theory o |
|
393 |
Toplevel.keep (print_provers o Toplevel.theory_of))); |
|
394 |
||
395 |
val _ = |
|
396 |
OuterSyntax.command "sledgehammer" "call all automatic theorem provers" K.diag |
|
397 |
(Scan.repeat P.xname >> (fn names => Toplevel.no_timing o Toplevel.unknown_proof o |
|
30800 | 398 |
Toplevel.keep (sledgehammer names o Toplevel.proof_of))); |
28582 | 399 |
|
400 |
end; |
|
401 |
||
402 |
end; |
|
30537 | 403 |