65 lines
1.4 KiB
Plaintext
65 lines
1.4 KiB
Plaintext
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:- category(monitor,
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implements(monitorp)).
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:- info([
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version is 1.0,
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authors is 'Paulo Moura',
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date is 2000/7/24,
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comment is 'Monitor predicates.']).
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:- private(spy_point_/4).
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:- dynamic(spy_point_/4).
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:- mode(spy_point_(?event, ?object, ?callable, ?object), zero_or_more).
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:- info(spy_point_/4, [
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comment is 'Stores current spy points.',
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argnames is ['Event', 'Object', 'Message', 'Sender']]).
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monitor_activated :-
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self(Self),
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once(current_event(_, _, _, _, Self)).
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activate_monitor :-
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self(Self),
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abolish_events(before, _, _, _, Self),
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abolish_events(after, _, _, _, Self),
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forall(
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::spy_point_(Event, Object, Message, Sender),
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define_events(Event, Object, Message, Sender, Self)).
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suspend_monitor :-
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self(Self),
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abolish_events(before, _, _, _, Self),
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abolish_events(after, _, _, _, Self).
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reset_monitor :-
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self(Self),
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abolish_events(before, _, _, _, Self),
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abolish_events(after, _, _, _, Self).
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::retractall(spy_point_(_, _, _, _)).
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spy_point(Event, Object, Message, Sender) :-
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::spy_point_(Event, Object, Message, Sender).
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set_spy_point(Event, Object, Message, Sender) :-
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::retractall(spy_point_(Event, Object, Message, Sender)),
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once((var(Event); Event = before; Event = after)),
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::assertz(spy_point_(Event, Object, Message, Sender)).
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del_spy_points(Event, Object, Message, Sender) :-
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::retractall(spy_point_(Event, Object, Message, Sender)).
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:- end_category.
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