/usr/share/Yap/hacks.yap is in yap 6.2.2-6+b2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | % File : hacks.yap
% Author : Vitor Santos Costa
% Updated: 2007
% Purpose: Prolog hacking
:- module(yap_hacks, [
current_choicepoint/1,
cut_by/1,
cut_at/1,
current_choicepoints/1,
choicepoint/7,
current_continuations/1,
continuation/4,
stack_dump/0,
stack_dump/1,
enable_interrupts/0,
disable_interrupts/0,
virtual_alarm/3
]).
stack_dump :-
stack_dump(-1).
stack_dump(Max) :-
current_choicepoints(CPs),
current_continuations([Env|Envs]),
continuation(Env,_,ContP,_),
length(CPs, LCPs),
length(Envs, LEnvs),
format(user_error,'~n~n~tStack Dump~t~40+~n~nAddress~tChoiceP~16+ Cur/Next Clause Goal~n',[LCPs,LEnvs]),
'$hacks':display_stack_info(CPs, Envs, Max, ContP, StackInfo, []),
run_formats(StackInfo, user_error).
run_formats([], _).
run_formats([Com-Args|StackInfo], Stream) :-
format(Stream, Com, Args),
run_formats(StackInfo, user_error).
virtual_alarm(Interval, Goal, Left) :-
Interval == 0, !,
virtual_alarm(0, 0, Left0, _),
on_signal(sig_vtalarm, _, Goal),
Left = Left0.
virtual_alarm(Interval, Goal, Left) :-
integer(Interval), !,
on_signal(sig_vtalarm, _, Goal),
virtual_alarm(Interval, 0, Left, _).
virtual_alarm(Interval.USecs, Goal, Left.LUSecs) :-
on_signal(sig_vtalarm, _, Goal),
virtual_alarm(Interval, USecs, Left, LUSecs).
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