/usr/share/Yap/pl/profile.yap is in yap 6.2.2-6build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: profile.yap *
* Last rev: 8/2/88 *
* mods: *
* comments: Some profiling predicates available in yap *
* *
*************************************************************************/
% hook predicate, taken from SWI-Prolog, for converting possibly explicitly-
% qualified callable terms into an atom that can be used as a label for
% describing a predicate; used e.g. on the tick profiler defined below
:- multifile(user:prolog_predicate_name/2).
:- meta_predicate profile_data(:,+,-).
profile_data(M:D, Parm, Data) :-!,
(
var(M) ->
'$do_error'(instantiation_error,profile_data(M:D, Parm, Data))
;
'$profile_data'(D, Parm, Data, M)
).
profile_data(P, Parm, Data) :-
'$current_module'(M),
'$profile_data'(P, Parm, Data, M).
'$profile_data'(P, Parm, Data,M) :- var(P), !,
'$profile_data_for_var'(P, Parm, Data,M).
'$profile_data'(M:P, Parm, Data, _) :- !,
'$profile_data'(P, Parm, Data, M).
'$profile_data'(P, Parm, Data, M) :-
'$profile_data2'(P, Parm, Data, M).
'$profile_data2'(Na/Ar,Parm,Data, M) :-
functor(P, Na, Ar),
'$profile_info'(M, P, Stats),
'$profile_say'(Stats, Parm, Data).
'$profile_data_for_var'(Name/Arity, Parm, Data, M) :-
'$current_predicate'(M,Name,Arity),
functor(P,Name,Arity),
\+ '$hidden'(Name), % don't show hidden predicates.
'$profile_info'(M, P, Stats),
'$profile_say'(Stats, Parm, Data).
'$profile_say'('$profile'(Entries, _, _), calls, Entries).
'$profile_say'('$profile'(_, _, Backtracks), retries, Backtracks).
profile_reset :-
current_module(M),
'$current_predicate'(M,Na,Ar),
functor(P,Na,Ar),
'$profile_reset'(M, P),
fail.
profile_reset.
showprofres :-
showprofres(-1).
showprofres(A) :-
('$proftype'(offline) -> '$offline_showprofres' ; true),
('$profison' -> profoff, Stop = true ; Stop = false),
'$profglobs'(Tot,GCs,HGrows,SGrows,Mallocs,ProfOns),
% root node has no useful info.
'$get_all_profinfo'(0,[],ProfInfo0,0,_TotCode),
msort(ProfInfo0,ProfInfo),
'$get_ppreds'(ProfInfo,Preds0),
'$add_extras_prof'(GCs, HGrows, SGrows, Mallocs, Preds0, PredsI),
keysort(PredsI,Preds),
'$sum_alls'(Preds,0,Tot0),
Accounted is -Tot0,
(ProfOns == 0 ->
format(user_error,'~d ticks, ~d accounted for~n',[Tot,Accounted])
;
format(user_error,'~d ticks, ~d accounted for (~d overhead)~n',[Tot,Accounted,ProfOns])
),
A1 is A+1,
'$display_preds'(Preds, Tot, 0, 1, A1),
(Stop = true -> profon ; true).
/*
'$check_duplicates'([]).
'$check_duplicates'([A,A|ProfInfo]) :- !,
write(A),nl,
'$check_duplicates'(ProfInfo).
'$check_duplicates'([_|ProfInfo]) :-
'$check_duplicates'(ProfInfo).
*/
'$get_all_profinfo'([],L,L,Tot,Tot) :- !.
'$get_all_profinfo'(Node,L0,Lf,Tot0,Totf) :-
'$profnode'(Node,Clause,PredId,Count,Left,Right),
Tot1 is Tot0+Count,
'$get_all_profinfo'(Left,L0,Li,Tot1,Tot2),
'$get_all_profinfo'(Right,[gprof(PredId,Clause,Count)|Li],Lf,Tot2,Totf).
'$get_ppreds'([],[]).
'$get_ppreds'([gprof(0,_,0)|Cls],Ps) :- !,
'$get_ppreds'(Cls,Ps).
'$get_ppreds'([gprof(0,_,Count)|_],_) :- !,
'$do_error'(system_error,showprofres(gprof(0,_,Count))).
'$get_ppreds'([gprof(PProfInfo,_,Count0)|Cls],[Sum-(Mod:Name/Arity)|Ps]) :-
'$get_more_ppreds'(Cls,PProfInfo,Count0,NCls,Sum),
'$get_pred_pinfo'(PProfInfo,Mod,Name,Arity),
'$get_ppreds'(NCls,Ps).
'$get_more_ppreds'([gprof(PProfInfo,_,Count)|Cls],PProfInfo,Count0,NCls,Sum)
:- !,
Count1 is Count+Count0,
'$get_more_ppreds'(Cls,PProfInfo,Count1,NCls,Sum).
'$get_more_ppreds'(Cls, _, Sum, Cls, NSum) :- NSum is -Sum.
'$display_preds'(_, _, _, N, N) :- !.
'$display_preds'([], _, _, _, _).
'$display_preds'([NSum-P|Ps], Tot, SoFar, I, N) :-
Sum is -NSum,
Perc is (100*Sum)/Tot,
Next is SoFar+Sum,
NextP is (100*Next)/Tot,
( ( P = M:F/A ->
G = M:H
; P = F/A,
G = H
),
functor(H, F, A),
user:prolog_predicate_name(G, PL) ->
true
; PL = P
),
format(user_error,'~|~t~d.~7+ ~|~w:~t~d~50+ (~|~t~2f~6+%) |~|~t~2f~6+%|~n',[I,PL,Sum,Perc,NextP]),
I1 is I+1,
'$display_preds'(Ps,Tot,Next,I1, N).
'$sum_alls'([],Tot,Tot).
'$sum_alls'([C-_|Preds],Tot0,Tot) :-
TotI is C+Tot0,
'$sum_alls'(Preds,TotI,Tot).
'$add_extras_prof'(GCs, HGrows, SGrows, Mallocs, Preds0, PredsI) :-
'$add_extra_prof'(GCs, 'Garbage Collections',Preds0,Preds1),
'$add_extra_prof'(HGrows, 'Code Expansion',Preds1,Preds2),
'$add_extra_prof'(SGrows, 'Stack Expansion',Preds2,Preds3),
'$add_extra_prof'(Mallocs, 'Heap Allocation',Preds3,PredsI).
'$add_extra_prof'(0, _,Preds, Preds) :- !.
'$add_extra_prof'(Ticks, Name, Preds, [NTicks-Name|Preds]) :-
NTicks is -Ticks.
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