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fix bad use of current_predicate.

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This commit is contained in:
Vitor Santos Costa 2012-06-12 14:50:07 +01:00
parent 7ce65dcfa3
commit 7db18d5ce2
2 changed files with 32 additions and 6 deletions
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35
C/stdpreds.c
View File

@ -3226,26 +3226,51 @@ cont_current_predicate_for_atom( USES_REGS1 )
while (pf != NIL) {
FunctorEntry *pp = RepFunctorProp(pf);
if (IsFunctorProperty(pp->KindOfPE)) {
Prop p0 = pp->PropsOfFE;
while (p0) {
Prop p0;
READ_LOCK(pp->RWLock);
p0 = pp->PropsOfFE;
if (p0) {
PredEntry *p = RepPredProp(p0);
if (p->ModuleOfPred == mod ||
p->ModuleOfPred == 0) {
UInt ar = p->ArityOfPE;
/* we found the predicate */
EXTRA_CBACK_ARG(3,1) = MkIntegerTerm((Int)(pp->NextOfPE));
READ_UNLOCK(pp->RWLock);
return
Yap_unify(ARG3,Yap_MkNewApplTerm(p->FunctorOfPred,p->ArityOfPE));
Yap_unify(ARG3,MkIntegerTerm(ar));
} else if (p->NextOfPE) {
UInt hash = PRED_HASH(pp,mod,PredHashTableSize);
READ_LOCK(PredHashRWLock);
PredEntry *p = PredHash[hash];
while (p) {
if (p->FunctorOfPred == pp &&
p->ModuleOfPred == mod)
{
READ_UNLOCK(PredHashRWLock);
READ_UNLOCK(pp->RWLock);
/* we found the predicate */
EXTRA_CBACK_ARG(3,1) = MkIntegerTerm((Int)(p->NextOfPE));
return Yap_unify(ARG3,MkIntegerTerm(p->ArityOfPE));
}
p0 = p->NextOfPE;
p = RepPredProp(p->NextOfPE);
}
READ_UNLOCK(PredHashRWLock);
}
}
READ_UNLOCK(pp->RWLock);
} else if (pp->KindOfPE == PEProp) {
PredEntry *pe = RepPredProp(pf);
READ_LOCK(pp->RWLock);
if (pe->ModuleOfPred == mod ||
pe->ModuleOfPred == 0) {
/* we found the predicate */
EXTRA_CBACK_ARG(3,1) = MkIntegerTerm((Int)(pp->NextOfPE));
return Yap_unify(ARG3,MkAtomTerm((Atom)(pe->FunctorOfPred)));
READ_UNLOCK(pp->RWLock);
return Yap_unify(ARG3,MkIntTerm(0));
}
READ_UNLOCK(pp->RWLock);
}
pf = pp->NextOfPE;
}

3
pl/protect.yap
View File

@ -28,7 +28,8 @@
'$protect'.
'$hide_predicates'(Name) :-
'$current_predicate_for_atom'(Name, prolog, P),
'$current_predicate_for_atom'(Name, prolog, Ar),
functor(P, Name, Ar),
'$hide_predicate'(P,prolog),
fail.
'$hide_predicates'(_).