403 lines
16 KiB
Prolog
403 lines
16 KiB
Prolog
%%% -*- Mode: Prolog; -*-
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% $Date: 2010-08-24 15:23:06 +0200 (Tue, 24 Aug 2010) $
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% $Revision: 4672 $
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%
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% This file is part of ProbLog
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% http://dtai.cs.kuleuven.be/problog
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%
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% ProbLog was developed at Katholieke Universiteit Leuven
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%
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% Copyright 2008, 2009, 2010
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% Katholieke Universiteit Leuven
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%
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% Main authors of this file:
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% Bernd Gutmann, Theofrastos Mantadelis
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%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% Artistic License 2.0
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%
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% Copyright (c) 2000-2006, The Perl Foundation.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Statistics for ProbLog
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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:- module(variables, [problog_var_set/2,
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problog_var_set_once/2,
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problog_var_get/2,
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problog_var_is_set/1,
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problog_var_defined/4,
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problog_var_defined/1,
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problog_var_define/4,
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problog_var_define/3,
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problog_var_clear/1,
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problog_var_clear_all/0,
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problog_var_group/1,
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problog_timer_start/1,
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problog_timer_stop/2,
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problog_timer_pause/1,
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problog_timer_pause/2,
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problog_timer_resume/1,
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problog_time_out/4,
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problog_var_timer_start/1,
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problog_var_timer_resume/1,
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problog_var_timer_pause/1,
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problog_var_timer_stop/1,
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problog_var_timer_timeout/1,
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problog_var_time_out/4]).
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:- yap_flag(unknown,error).
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:- style_check(single_var).
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problog_var_set(Variable, Value):-
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ground(Variable), nonvar(Value),
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(recorded(problog_variables, stored(Variable, _Value), Ref) ->
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erase(Ref)
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;
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true
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),
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recordz(problog_variables, stored(Variable, Value), _Ref).
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problog_var_set_once(Variable, Value):-
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ground(Variable), nonvar(Value),
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(recorded(problog_variables, stored(Variable, _Value), __Ref) ->
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throw(problog_variable_already_set(problog_var_set_once(Variable, Value)))
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;
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recordz(problog_variables, stored(Variable, Value), _Ref)
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).
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problog_var_get(Variable, Value):-
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((ground(Variable),recorded(problog_variables, stored(Variable, Value), _Ref)) ->
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true
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;
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throw(problog_variable_not_set(problog_var_get(Variable, Value)))
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).
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problog_var_is_set(Variable):-
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nonvar(Variable),
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recorded(problog_variables, stored(Variable, _Value), _Ref).
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problog_var_defined(Variable):-
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problog_var_defined(Variable, _Group, _Type, _Messages).
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problog_var_defined(Variable, Group, Type, Messages):-
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recorded(problog_variables, defined(Variable, Group, Type, Messages), _Ref).
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problog_var_defined(Variable, default, untyped, messages(Variable, ':', '')):-
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recorded(problog_variables, stored(Variable, _Value), _Ref),
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\+ recorded(problog_variables, defined(Variable, _Group, _Type, _Messages), _).
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problog_var_define(Variable, Group, Type):-
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problog_var_define(Variable, Group, Type, messages(Variable, ':', '')).
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problog_var_define(Variable, Group, Type, Messages):-
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recorded(problog_variables, defined(Variable, _Group, _Type, _Messages), _Ref),
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throw(problog_variable_already_defined(problog_var_define(Variable, Group, Type, Messages))).
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problog_var_define(Variable, Group, Type, Messages):-
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recordz(problog_variables, defined(Variable, Group, Type, Messages), _Ref),
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(recorded(problog_variables, group(Group), _) ->
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true
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;
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recordz(problog_variables, group(Group), __Ref)
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).
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problog_var_clear(Variable):-
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recorded(problog_variables, stored(Variable, _), Ref),
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erase(Ref).
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problog_var_clear_all:-
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recorded(problog_variables, stored(_, _), Ref),
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erase(Ref),
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fail.
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problog_var_clear_all.
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problog_var_group(Group):-
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recorded(problog_variables, group(Group), _).
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problog_var_group(default).
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%%% Migrated code from timers %%%
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%
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% This is more or less duplicate code now with timers.
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% We should decide if it stays here or it is a seperate module.
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%
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% modfications from module timers: works with records, stop stops a paused timer
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% should start resume a paused timer? Then no need for predicate resume...
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%
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problog_timer_start(Name) :-
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(recorded(problog_timer, timer(Name, _), _) ->
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throw(problog_timer_already_started(problog_timer_start(Name)));
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statistics(walltime, [StartTime, _]),
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recordz(problog_timer, timer(Name, StartTime), _)
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).
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problog_timer_stop(Name, Duration) :-
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recorded(problog_timer, timer(Name, StartTime), Ref),
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erase(Ref), !,
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statistics(walltime, [StopTime, _]),
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Duration is StopTime - StartTime.
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problog_timer_stop(Name, Duration) :-
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(recorded(problog_timer, timer_paused(Name, Duration), Ref) ->
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erase(Ref)
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;
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throw(problog_timer_not_started(problog_timer_stop(Name, Duration)))
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).
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problog_timer_pause(Name) :-
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(recorded(problog_timer, timer(Name, StartTime), Ref) ->
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erase(Ref),
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statistics(walltime, [StopTime, _]),
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Duration is StopTime - StartTime,
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recordz(problog_timer, timer_paused(Name, Duration), _)
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;
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throw(problog_timer_not_started(problog_timer_pause(Name)))
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).
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problog_timer_pause(Name, Duration) :-
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(recorded(problog_timer, timer(Name, StartTime), Ref) ->
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erase(Ref),
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statistics(walltime, [StopTime, _]),
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Duration is StopTime - StartTime,
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recordz(problog_timer, timer_paused(Name, Duration), _)
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;
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throw(problog_timer_not_started(problog_timer_pause(Name)))
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).
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problog_timer_resume(Name):-
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(recorded(problog_timer, timer_paused(Name, Duration), Ref) ->
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erase(Ref),
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statistics(walltime, [ResumeTime, _]),
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CorrectedStartTime is ResumeTime - Duration,
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recordz(problog_timer, timer(Name, CorrectedStartTime), _)
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;
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throw(problog_timer_not_paused(problog_timer_resume(Name)))
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).
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%%% Syntactic sugar to make timer based variables %%%
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problog_var_timer_start(Variable):-
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problog_timer_start(Variable).
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problog_var_timer_resume(Variable):-
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problog_timer_resume(Variable).
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problog_var_timer_pause(Variable):-
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problog_timer_pause(Variable, Duration),
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problog_var_set(Variable, Duration).
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problog_var_timer_stop(Variable):-
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problog_timer_stop(Variable, Duration),
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problog_var_set(Variable, Duration).
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problog_var_timer_timeout(Variable):-
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problog_timer_stop(Variable, _Duration),
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problog_var_set(Variable, timeout).
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%%% This is possible for future use %%%
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:- use_module(library(timeout)).
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:- meta_predicate problog_var_time_out(:,_,_,_), problog_time_out(:,_,_,_).
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%
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% Problems with nesting, use with care
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% always succeeds returns Success = true/fail, Time = Msec taken/timeout
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%
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problog_var_time_out(M:Goal, TimeOut, Success, Variable):-
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problog_time_out(M:Goal, TimeOut, Success, Time),
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problog_var_set(Variable, Time).
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problog_time_out(M:Goal, TimeOut, Success, Time):-
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MSecs is TimeOut * 1000,
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problog_timer_start(time_measure),
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(time_out(M:Goal, MSecs, Result) ->
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problog_timer_stop(time_measure, Duration),
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(Result == success ->
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Success = true,
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Time = Duration
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;
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Success = fail,
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Time = Result
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)
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;
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Success = fail,
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problog_timer_stop(time_measure, Time)
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).
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