author | wenzelm |
Sat, 02 Apr 2016 23:29:05 +0200 | |
changeset 62826 | eb94e570c1a4 |
parent 61556 | 0d4ee4168e41 |
child 63692 | 1bc4bc2c9fd1 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Sledgehammer/async_manager_legacy.ML |
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Author: Fabian Immler, TU Muenchen |
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Author: Makarius |
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Author: Jasmin Blanchette, TU Muenchen |
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Central manager for asynchronous diagnosis tool threads. |
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Proof General legacy! |
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*) |
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signature ASYNC_MANAGER_LEGACY = |
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sig |
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val thread : string -> Time.time -> Time.time -> string * string -> (unit -> bool * string) -> |
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unit |
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val has_running_threads : string -> bool |
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end; |
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structure Async_Manager_Legacy : ASYNC_MANAGER_LEGACY = |
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struct |
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fun make_thread interrupts body = |
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Thread.fork |
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(fn () => |
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Runtime.debugging NONE body () handle exn => |
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if Exn.is_interrupt exn then () |
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else writeln ("## INTERNAL ERROR ##\n" ^ Runtime.exn_message exn), |
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Standard_Thread.attributes |
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{name = "async_manager", stack_limit = NONE, interrupts = interrupts}); |
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fun implode_message (workers, work) = |
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space_implode " " (Try.serial_commas "and" workers) ^ work |
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structure Thread_Heap = Heap |
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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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type state = |
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{manager: Thread.thread option, |
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timeout_heap: Thread_Heap.T, |
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active: |
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(Thread.thread |
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* (string * Time.time * Time.time * (string * string))) list, |
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canceling: (Thread.thread * (string * Time.time * (string * string))) list, |
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messages: (bool * (string * (string * string))) list} |
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fun make_state manager timeout_heap active canceling messages : state = |
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{manager = manager, timeout_heap = timeout_heap, active = active, canceling = canceling, |
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messages = messages} |
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val global_state = Synchronized.var "async_manager" (make_state NONE Thread_Heap.empty [] [] []) |
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fun unregister (urgent, message) thread = |
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Synchronized.change global_state |
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(fn state as {manager, timeout_heap, active, canceling, messages} => |
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(case lookup_thread active thread of |
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SOME (tool, _, _, desc as (worker, its_desc)) => |
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let |
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val active' = delete_thread thread active |
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val now = Time.now () |
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val canceling' = (thread, (tool, now, desc)) :: canceling |
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val message' = |
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(worker, its_desc ^ (if message = "" then "" else "\n" ^ message)) |
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val messages' = (urgent, (tool, message')) :: messages |
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in make_state manager timeout_heap active' canceling' messages' end |
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| NONE => state)) |
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val min_wait_time = seconds 0.3 |
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val max_wait_time = seconds 10.0 |
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fun print_new_messages () = |
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Synchronized.change_result global_state |
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(fn {manager, timeout_heap, active, canceling, messages} => |
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messages |
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|> List.partition |
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(fn (urgent, _) => |
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(null active andalso null canceling) orelse urgent) |
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||> make_state manager timeout_heap active canceling) |
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|> map (fn (_, (tool, (worker, work))) => ((tool, work), worker)) |
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|> AList.group (op =) |
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|> List.app (fn ((_, ""), _) => () |
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| ((tool, work), workers) => |
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tool ^ ": " ^ |
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implode_message (workers |> sort_distinct string_ord, work) |
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|> writeln) |
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fun check_thread_manager () = Synchronized.change global_state |
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(fn state as {manager, timeout_heap, active, canceling, messages} => |
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if (case manager of SOME thread => Thread.isActive thread | NONE => false) then state |
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else let val manager = SOME (make_thread false (fn () => |
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let |
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fun time_limit timeout_heap = |
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(case try Thread_Heap.min timeout_heap of |
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NONE => Time.now () + max_wait_time |
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| SOME (time, _) => time) |
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(*action: find threads whose timeout is reached, and interrupt canceling threads*) |
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fun action {manager, timeout_heap, active, canceling, messages} = |
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let val (timeout_threads, timeout_heap') = |
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Thread_Heap.upto (Time.now (), Thread.self ()) timeout_heap |
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in |
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if null timeout_threads andalso null canceling then |
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NONE |
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else |
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let |
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val _ = List.app (Standard_Thread.interrupt_unsynchronized o #1) canceling |
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val canceling' = filter (Thread.isActive o #1) canceling |
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val state' = make_state manager timeout_heap' active canceling' messages |
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in SOME (map #2 timeout_threads, state') end |
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end |
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in |
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while Synchronized.change_result global_state |
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(fn state as {timeout_heap, active, canceling, messages, ...} => |
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if null active andalso null canceling andalso null messages |
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then (false, make_state NONE timeout_heap active canceling messages) |
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else (true, state)) |
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do |
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(Synchronized.timed_access global_state |
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(SOME o time_limit o #timeout_heap) action |
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|> these |
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|> List.app (unregister (false, "Timed out.")); |
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print_new_messages (); |
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(* give threads some time to respond to interrupt *) |
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OS.Process.sleep min_wait_time) |
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end)) |
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in make_state manager timeout_heap active canceling messages end) |
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changeset
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133 |
fun register tool birth_time death_time desc thread = |
37583
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factored non-ATP specific code from "ATP_Manager" out, so that it can be reused for the LEO-II integration
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changeset
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134 |
(Synchronized.change global_state |
61312
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further reduced dependency on legacy async thread manager
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changeset
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135 |
(fn {manager, timeout_heap, active, canceling, messages} => |
37583
9ce2451647d5
factored non-ATP specific code from "ATP_Manager" out, so that it can be reused for the LEO-II integration
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parents:
diff
changeset
|
136 |
let |
48319
340187063d84
use async manager to manage MaSh learners to make sure they get killed cleanly
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parents:
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diff
changeset
|
137 |
val timeout_heap' = Thread_Heap.insert (death_time, thread) timeout_heap |
340187063d84
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parents:
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diff
changeset
|
138 |
val active' = update_thread (thread, (tool, birth_time, death_time, desc)) active |
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blanchet
parents:
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diff
changeset
|
139 |
val state' = make_state manager timeout_heap' active' canceling messages |
37583
9ce2451647d5
factored non-ATP specific code from "ATP_Manager" out, so that it can be reused for the LEO-II integration
blanchet
parents:
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changeset
|
140 |
in state' end); |
39006
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remove time information in output, since it's confusing anyway
blanchet
parents:
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changeset
|
141 |
check_thread_manager ()) |
37583
9ce2451647d5
factored non-ATP specific code from "ATP_Manager" out, so that it can be reused for the LEO-II integration
blanchet
parents:
diff
changeset
|
142 |
|
52048
9003b293e775
tuned signature -- emphasize thread creation here;
wenzelm
parents:
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diff
changeset
|
143 |
fun thread tool birth_time death_time desc f = |
58894 | 144 |
(make_thread true |
37584 | 145 |
(fn () => |
146 |
let |
|
147 |
val self = Thread.self () |
|
39006
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remove time information in output, since it's confusing anyway
blanchet
parents:
38990
diff
changeset
|
148 |
val _ = register tool birth_time death_time desc self |
43005
c96f06bffd90
merge timeout messages from several ATPs into one message to avoid clutter
blanchet
parents:
41042
diff
changeset
|
149 |
in unregister (f ()) self end); |
37584 | 150 |
()) |
151 |
||
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parents:
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diff
changeset
|
152 |
fun has_running_threads tool = |
57556 | 153 |
exists (fn (_, (tool', _, _, _)) => tool' = tool) (#active (Synchronized.value global_state)) |
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parents:
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diff
changeset
|
154 |
|
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factored non-ATP specific code from "ATP_Manager" out, so that it can be reused for the LEO-II integration
blanchet
parents:
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changeset
|
155 |
end; |