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yap-6.3/packages/ProbLog/problog/logger.yap

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Prolog

%%% -*- Mode: Prolog; -*-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% $Date: 2010-10-11 14:14:11 +0200 (Mon, 11 Oct 2010) $
% $Revision: 4892 $
%
% This file is part of ProbLog
% http://dtai.cs.kuleuven.be/problog
%
% ProbLog was developed at Katholieke Universiteit Leuven
%
% Copyright 2008, 2009, 2010
% Katholieke Universiteit Leuven
%
% Main authors of this file:
% Bernd Gutmann
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Artistic License 2.0
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
:- module(logger,[logger_define_variable/2,
logger_set_filename/1,
logger_set_delimiter/1,
logger_set_variable/2,
logger_set_variable_again/2,
logger_get_variable/2,
logger_start_timer/1,
logger_stop_timer/1,
logger_write_data/0,
logger_write_header/0,
logger_variable_is_set/1,
logger_add_to_variable/2,
logger_reset_all_variables/0]).
:- use_module(library(system),[datime/1,mktime/2]).
:- use_module(library(lists),[append/3,member/2]).
:- yap_flag(unknown,error).
:- style_check(single_var).
:- initialization((
bb_put(logger_filename,'out.dat'),
bb_put(logger_delimiter,';'),
bb_put(logger_variables,[])
)).
%========================================================================
%= Defines a new variable, possible types are: int, float and time
%=
%= +Name, +Type
%========================================================================
logger_define_variable(Name,Type) :-
bb_get(logger_variables,Variables),
member((Name,_),Variables),
!,
throw(error(variable_redefined(logger_define_variable(Name,Type)))).
logger_define_variable(Name,Type) :-
ground(Name),
atomic(Name),
!,
logger_define_variable_intern(Type,Name).
logger_define_variable(Name,Type) :-
throw(error(illegal_variable_name(logger_define_variable(Name,Type)))).
logger_define_variable_intern(int,Name) :-
!,
bb_delete(logger_variables,OldVariables),
append(OldVariables,[(Name,int)],NewVariables),
bb_put(logger_variables,NewVariables),
atom_concat(logger_data_,Name,Key),
bb_put(Key,null).
logger_define_variable_intern(float,Name) :-
!,
bb_delete(logger_variables,OldVariables),
append(OldVariables,[(Name,float)],NewVariables),
bb_put(logger_variables,NewVariables),
atom_concat(logger_data_,Name,Key),
bb_put(Key,null).
logger_define_variable_intern(time,Name) :-
!,
bb_delete(logger_variables,OldVariables),
append(OldVariables,[(Name,time)],NewVariables),
bb_put(logger_variables,NewVariables),
atom_concat(logger_data_,Name,Key),
atom_concat(logger_start_time_,Name,Key2),
bb_put(Key,null),
bb_put(Key2,null).
logger_define_variable_intern(Type,Name) :-
throw(error(unknown_variable_type(logger_define_variable(Name,Type)))).
%========================================================================
%= Set the filename, to which the output should be appended
%=
%= +Name
%========================================================================
logger_set_filename(Name) :-
bb_put(logger_filename,Name).
%========================================================================
%= Set the delimiter for the fields
%=
%= +Delimiter
%========================================================================
logger_set_delimiter(Delimiter) :-
bb_put(logger_delimiter,Delimiter).
%========================================================================
%= Set the value of the variable name. If the value is already set or
%= if the variable does not exists, an error will be displayed and the
%= Prolog will be halted.
%=
%= +Name, +Value
%========================================================================
logger_set_variable(Name,Value) :-
atom_concat(logger_data_,Name,Key),
(
bb_get(Key,null)
->
(
bb_put(Key,Value)
);(
bb_get(Key,_)
->
(
write('logger_set_variable, Variable '),
write(Name),
write(' is already set'),
nl,
fail
) ; (
write('logger_set_variable, unknown variable '),
write(Name),
nl,
fail
)
)
),!.
%========================================================================
%= Set the value of the variable name. If the value is already set or
%= the old value is overwritten. If the variable does not exists, an
%= error will be displayed and the Prolog will be halted.
%=
%= +Name, +Value
%========================================================================
logger_set_variable_again(Name,Value) :-
atom_concat(logger_data_,Name,Key),
(
bb_get(Key,_)
->
(
bb_put(Key,Value)
);(
write('logger_set_variable, unknown variable '),
write(Name),
nl,
fail
)
),!.
logger_variable_is_set(Name) :-
atom_concat(logger_data_,Name,Key),
bb_get(Key,X),
X \= null.
logger_add_to_variable(Name,Value) :-
(
logger_variable_is_set(Name)
->
(
logger_get_variable(Name,OldValue),
NewValue is OldValue+Value,
logger_set_variable_again(Name,NewValue)
);
logger_set_variable(Name,Value)
).
%========================================================================
%= Get the value of the variable name. If the value is not yet set or
%= if the variable does not exists, an error will be displayed and the
%= Prolog will be halted.
%=
%= +Name, +Value
%========================================================================
logger_get_variable(Name,Value) :-
atom_concat(logger_data_,Name,Key),
(
bb_get(Key,null)
->
(
write('logger_get_variable, Variable '),
write(Name),
write(' is not yet set'),
nl,
fail
);(
bb_get(Key,Value)
;
(
write('logger_set_variable, unknown variable '),
write(Name),
nl,
fail
)
)
),!.
%========================================================================
%=
%=
%= +Name
%========================================================================
logger_start_timer(Name) :-
atom_concat(logger_start_time_,Name,Key),
(
bb_get(Key,null)
->
(
statistics(walltime,[StartTime,_]),
bb_put(Key,StartTime)
);(
bb_get(Key,_)
->
(
write('logger_start_timer, timer '),
write(Name),
write(' is already started'),
nl,
fail
);(
write('logger_start_timer, timer '),
write(Name),
write(' is not defined'),
nl,
fail
)
)
),!.
logger_stop_timer(Name) :-
atom_concat(logger_start_time_,Name,Key),
bb_delete(Key,StartTime),
statistics(walltime,[StopTime,_]),
bb_put(Key,null),
Duration is StopTime-StartTime,
(
logger_variable_is_set(Name)
->
(
logger_get_variable(Name,OldDuration),
NewDuration is Duration+OldDuration,
logger_set_variable_again(Name,NewDuration)
); logger_set_variable(Name,Duration)
),!.
%========================================================================
%= write a new line to the log file, which contains all the
%= values of the variables. afterwards, reset all variables to null.
%=
%========================================================================
logger_write_data :-
bb_get(logger_filename,FName),
bb_get(logger_variables,Variables),
open(FName,'append',Handle),
logger_write_data_intern(Variables,Handle),
close(Handle),
logger_reset_all_variables.
logger_write_data_intern([],_).
logger_write_data_intern([(Name,_Type)],Handle) :-
variablevalue_with_nullcheck(Name,Value),
write(Handle,Value),
write(Handle,'\n').
logger_write_data_intern([(Name,_Type),Next|T],Handle) :-
variablevalue_with_nullcheck(Name,Value),
bb_get(logger_delimiter,D),
write(Handle,Value),
write(Handle,D),
logger_write_data_intern([Next|T],Handle).
variablevalue_with_nullcheck(Name,Result) :-
atom_concat(logger_data_,Name,Key),
bb_get(Key,Value),
(
Value=null
->
Result = '' ;
Result=Value
).
%========================================================================
%=
%=
%=
%========================================================================
logger_reset_all_variables :-
bb_get(logger_variables,Variables),
% reset variables
findall(_,(member((Name,_),Variables),atom_concat(logger_data_,Name,Key),bb_put(Key,null)),_),
findall(_,(member((Name,time),Variables),atom_concat(logger_start_time_,Name,Key2),bb_put(Key2,null)),_).
%========================================================================
%=
%=
%=
%========================================================================
logger_write_header :-
bb_get(logger_filename,FName),
bb_get(logger_variables,Variables),
open(FName,'append',Handle),
format(Handle,'#####################################################################~n',[]),
format(Handle,'# ~w~6+~w~7+~w~n',['Pos','Type','Name']),
format(Handle,'#####################################################################~n',[]),
logger_write_header_intern(Variables,1,Handle),
format(Handle,'#####################################################################~n',[]),
close(Handle).
logger_write_header_intern([],_,_).
logger_write_header_intern([(Name,Type)|T],Position,Handle) :-
format(Handle,'# ~q~6+~q~7+~q~n',[Position,Type,Name]),
Position2 is Position+1,
logger_write_header_intern(T,Position2,Handle).