Insert Christian patches:

- uncutable predicates;
  - call_cleanup/2.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@615 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
vsc 2002-10-03 13:54:35 +00:00
parent e606c427fe
commit 342faf6d89
7 changed files with 216 additions and 54 deletions

View File

@ -149,6 +149,8 @@ LookupAtom(char *atom)
/* compute hash */
p = (unsigned char *)atom;
HashFunction(p, hash);
if (!strcmp("in line 284, system predicate see/1 at prolog:$$compile_stat/5 (clause 1)",atom))
fprintf(stderr,"vsc: has is %d\n", hash);
WRITE_LOCK(HashChain[hash].AERWLock);
a = HashChain[hash].Entry;
/* search atom in chain */

View File

@ -34,8 +34,8 @@ STATIC_PROTO(void c_arg, (Int, Term, unsigned int));
STATIC_PROTO(void c_args, (Term));
STATIC_PROTO(void c_eq, (Term, Term));
STATIC_PROTO(void c_test, (Int, Term));
STATIC_PROTO(void c_bifun, (Int, Term, Term, Term, int));
STATIC_PROTO(void c_goal, (Term, int));
STATIC_PROTO(void c_bifun, (Int, Term, Term, Term, int, int *));
STATIC_PROTO(void c_goal, (Term, int, int *));
STATIC_PROTO(void get_type_info, (Term));
STATIC_PROTO(void c_body, (Term, int));
STATIC_PROTO(void get_cl_info, (Term));
@ -701,7 +701,7 @@ bip_cons Op,Xk,Ri,C
*/
static void
c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
c_bifun(Int Op, Term t1, Term t2, Term t3, int mod, int *uncutable)
{
/* compile Z = X Op Y arithmetic function */
/* first we fetch the arguments */
@ -820,7 +820,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
if (IsNumTerm(t1)) {
/* we will always fail */
if (i2)
c_goal(MkAtomTerm(AtomFalse), mod);
c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
} else if (!IsAtomTerm(t1)) {
char s[32];
@ -891,7 +891,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
} else if (IsApplTerm(t2)) {
Functor f = FunctorOfTerm(t2);
if (i1 < 1 || i1 > ArityOfFunctor(f)) {
c_goal(MkAtomTerm(AtomFalse), mod);
c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
} else {
c_eq(ArgOfTerm(i1, t2), t3);
}
@ -905,7 +905,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
c_eq(TailOfTerm(t2), t3);
return;
default:
c_goal(MkAtomTerm(AtomFalse), mod);
c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
return;
}
}
@ -1065,13 +1065,13 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
}
static void
c_functor(Term Goal, int mod)
c_functor(Term Goal, int mod, int *uncutable)
{
Term t1 = ArgOfTerm(1, Goal);
Term t2 = ArgOfTerm(2, Goal);
Term t3 = ArgOfTerm(3, Goal);
if (IsVarTerm(t1) && IsNewVar(t1)) {
c_bifun(_functor, t2, t3, t1, mod);
c_bifun(_functor, t2, t3, t1, mod, uncutable);
} else if (IsNonVarTerm(t1)) {
/* just split the structure */
if (IsAtomicTerm(t1)) {
@ -1123,7 +1123,7 @@ IsTrueGoal(Term t) {
}
static void
c_goal(Term Goal, int mod)
c_goal(Term Goal, int mod, int* uncutable)
{
Functor f;
PredEntry *p;
@ -1147,13 +1147,16 @@ c_goal(Term Goal, int mod)
}
if (IsNumTerm(Goal)) {
FAIL("goal can not be a number", TYPE_ERROR_CALLABLE, Goal);
} else if (IsRefTerm(Goal)) {
}
else if (IsRefTerm(Goal)) {
Error_TYPE = TYPE_ERROR_DBREF;
Error_Term = Goal;
FAIL("goal argument in static procedure can not be a data base reference", TYPE_ERROR_CALLABLE, Goal);
} else if (IsPairTerm(Goal)) {
}
else if (IsPairTerm(Goal)) {
Goal = MkApplTerm(FunctorCall, 1, &Goal);
} else if (IsVarTerm(Goal)) {
}
else if (IsVarTerm(Goal)) {
Goal = MkApplTerm(FunctorCall, 1, &Goal);
}
if (IsAtomTerm(Goal)) {
@ -1176,7 +1179,11 @@ c_goal(Term Goal, int mod)
return;
}
else if (atom == AtomCut) {
if (*uncutable){
Error_TYPE = UNKNOWN_ERROR; /*ceh: needs an official assigned error*/
Error_Term = Goal;
FAIL("tried to cut an uncutable goal", UNKNOWN_ERROR, Goal);
}
if (profiling)
emit(enter_profiling_op, (CELL)RepPredProp(PredPropByAtom(AtomCut,0)), Zero);
else if (call_counting)
@ -1189,7 +1196,8 @@ c_goal(Term Goal, int mod)
if (is_tabled(CurrentPred)) {
emit(cut_op, Zero, Zero);
emit(table_new_answer_op, Zero, CurrentPred->ArityOfPE);
} else
}
else
#endif /* TABLING */
{
emit(cutexit_op, Zero, Zero);
@ -1235,15 +1243,16 @@ c_goal(Term Goal, int mod)
emit(table_new_answer_op, Zero, CurrentPred->ArityOfPE);
else
#endif /* TABLING */
emit(procceed_op, Zero, Zero);
emit(procceed_op, Zero, Zero);
#ifdef TABLING
READ_UNLOCK(CurrentPred->PRWLock);
#endif
} else
}
else
++goalno;
onbranch = pop_branch();
emit(pop_or_op, Zero, Zero);
/* --onbranch; */
/* --onbranch; */
return;
}
#endif /* YAPOR */
@ -1277,7 +1286,7 @@ c_goal(Term Goal, int mod)
do {
arg = ArgOfTerm(1, Goal);
looking_at_comit = IsApplTerm(arg) &&
FunctorOfTerm(arg) == FunctorArrow;
FunctorOfTerm(arg) == FunctorArrow;
if (frst) {
if (optimizing_comit) {
emit(label_op, l, Zero);
@ -1342,16 +1351,16 @@ c_goal(Term Goal, int mod)
}
save = onlast;
onlast = FALSE;
c_goal(ArgOfTerm(1, arg), mod);
c_goal(ArgOfTerm(1, arg), mod, uncutable);
if (!optimizing_comit) {
c_var((Term) comitvar, comit_b_flag,
1);
}
onlast = save;
c_goal(ArgOfTerm(2, arg), mod);
c_goal(ArgOfTerm(2, arg), mod, uncutable);
}
else
c_goal(ArgOfTerm(1, Goal), mod);
c_goal(ArgOfTerm(1, Goal), mod, uncutable);
if (!onlast) {
emit(jump_op, m, Zero);
}
@ -1368,13 +1377,13 @@ c_goal(Term Goal, int mod)
else {
optimizing_comit = FALSE; /* not really necessary */
}
c_goal(Goal, mod);
c_goal(Goal, mod, uncutable);
/* --onbranch; */
onbranch = pop_branch();
if (!onlast) {
emit(label_op, m, Zero);
if ((onlast = save))
c_goal(MkAtomTerm(AtomTrue), mod);
c_goal(MkAtomTerm(AtomTrue), mod, uncutable);
}
emit(pop_or_op, Zero, Zero);
return;
@ -1384,9 +1393,9 @@ c_goal(Term Goal, int mod)
int t2 = ArgOfTerm(2, Goal);
onlast = FALSE;
c_goal(ArgOfTerm(1, Goal), mod);
c_goal(ArgOfTerm(1, Goal), mod, uncutable);
onlast = save;
c_goal(t2, mod);
c_goal(t2, mod, uncutable);
return;
}
else if (f == FunctorNot || f == FunctorAltNot) {
@ -1410,7 +1419,7 @@ c_goal(Term Goal, int mod)
emit_3ops(push_or_op, label, Zero, Zero);
emit_3ops(either_op, label, Zero, Zero);
emit(restore_tmps_op, Zero, Zero);
c_goal(ArgOfTerm(1, Goal), mod);
c_goal(ArgOfTerm(1, Goal), mod, uncutable);
c_var(comitvar, comit_b_flag, 1);
onlast = save;
emit(fail_op, end_label, Zero);
@ -1421,7 +1430,7 @@ c_goal(Term Goal, int mod)
onlast = save;
/* --onbranch; */
onbranch = pop_branch();
c_goal(MkAtomTerm(AtomTrue), mod);
c_goal(MkAtomTerm(AtomTrue), mod, uncutable);
++goalno;
emit(pop_or_op, Zero, Zero);
return;
@ -1438,12 +1447,13 @@ c_goal(Term Goal, int mod)
}
onlast = FALSE;
c_var(comitvar, save_b_flag, 1);
c_goal(ArgOfTerm(1, Goal), mod);
c_goal(ArgOfTerm(1, Goal), mod, uncutable);
c_var(comitvar, comit_b_flag, 1);
onlast = save;
c_goal(ArgOfTerm(2, Goal), mod);
c_goal(ArgOfTerm(2, Goal), mod, uncutable);
return;
} else if (f == FunctorEq) {
}
else if (f == FunctorEq) {
if (profiling)
emit(enter_profiling_op, (CELL)p, Zero);
else if (call_counting)
@ -1463,7 +1473,8 @@ c_goal(Term Goal, int mod)
#endif
}
return;
} else if (p->PredFlags & AsmPredFlag) {
}
else if (p->PredFlags & AsmPredFlag) {
int op = p->PredFlags & 0x7f;
if (profiling)
emit(enter_profiling_op, (CELL)p, Zero);
@ -1485,15 +1496,17 @@ c_goal(Term Goal, int mod)
#endif
}
return;
} else if (op >= _plus && op <= _functor) {
}
else if (op >= _plus && op <= _functor) {
if (op == _functor) {
c_functor(Goal, mod);
} else {
c_functor(Goal, mod, uncutable);
}
else {
c_bifun(op,
ArgOfTerm(1, Goal),
ArgOfTerm(2, Goal),
ArgOfTerm(3, Goal),
mod);
mod, uncutable);
}
if (onlast) {
emit(deallocate_op, Zero, Zero);
@ -1509,10 +1522,12 @@ c_goal(Term Goal, int mod)
#endif
}
return;
} else {
}
else {
c_args(Goal);
}
} else if (p->PredFlags & BinaryTestPredFlag) {
}
else if (p->PredFlags & BinaryTestPredFlag) {
Term a1 = ArgOfTerm(1,Goal);
if (IsVarTerm(a1) && !IsNewVar(a1)) {
Term a2 = ArgOfTerm(2,Goal);
@ -1528,7 +1543,8 @@ c_goal(Term Goal, int mod)
c_var(a1, bt1_flag, 2);
current_p0 = p0;
c_var(a2, bt2_flag, 2);
} else {
}
else {
Term t2 = MkVarTerm();
if (H == (CELL *)freep0) {
/* oops, too many new variables */
@ -1541,7 +1557,8 @@ c_goal(Term Goal, int mod)
current_p0 = p0;
c_var(t2, bt2_flag, 2);
}
} else {
}
else {
Term a2 = ArgOfTerm(2,Goal);
Term t1 = MkVarTerm();
if (H == (CELL *)freep0) {
@ -1549,13 +1566,14 @@ c_goal(Term Goal, int mod)
save_machine_regs();
longjmp(CompilerBotch,4);
}
c_eq(t1, a1);
if (IsVarTerm(a2) && !IsNewVar(a2)) {
c_var(t1, bt1_flag, 2);
current_p0 = p0;
c_var(a2, bt2_flag, 2);
} else {
}
else {
Term t2 = MkVarTerm();
if (H == (CELL *)freep0) {
/* oops, too many new variables */
@ -1579,11 +1597,12 @@ c_goal(Term Goal, int mod)
#endif /* TABLING */
emit(procceed_op, Zero, Zero);
#ifdef TABLING
READ_UNLOCK(CurrentPred->PRWLock);
READ_UNLOCK(CurrentPred->PRWLock);
#endif
}
return;
} else {
}
else {
if (profiling)
emit(enter_profiling_op, (CELL)p, Zero);
else if (call_counting)
@ -1591,12 +1610,17 @@ c_goal(Term Goal, int mod)
c_args(Goal);
}
}
if (p->PredFlags & UnCutAblePredFlag ){
(void)(*uncutable)++;
}
if (p->PredFlags & SafePredFlag
#ifdef YAPOR
/* synchronisation means saving the state, so it is never safe in YAPOR */
if (p->PredFlags & SafePredFlag && !(p->PredFlags & SyncPredFlag)) {
#else
if (p->PredFlags & SafePredFlag) {
/* synchronisation means saving the state, so it is never safe in YAPOR */
&& !(p->PredFlags & SyncPredFlag)
#endif /* YAPOR */
) {
if (onlast)
emit(deallocate_op, Zero, Zero);
emit(safe_call_op, (CELL) p0, Zero);
@ -1644,13 +1668,15 @@ c_goal(Term Goal, int mod)
if (is_tabled(CurrentPred)) {
emit_3ops(call_op, (CELL) p0, Zero, Zero);
emit(table_new_answer_op, Zero, CurrentPred->ArityOfPE);
} else
}
else
#endif /* TABLING */
emit(execute_op, (CELL) p0, Zero);
#ifdef TABLING
READ_UNLOCK(CurrentPred->PRWLock);
#endif
} else {
}
else {
emit_3ops(call_op, (CELL) p0, Zero, Zero);
}
}
@ -1686,6 +1712,7 @@ get_type_info(Term Goal)
static void
c_body(Term Body, int mod)
{
int uncutable=0;
onhead = FALSE;
BodyStart = cpc;
goalno = 1;
@ -1705,11 +1732,11 @@ c_body(Term Body, int mod)
Body = ArgOfTerm(1, Body);
break;
}
c_goal(ArgOfTerm(1, Body), mod);
c_goal(ArgOfTerm(1, Body), mod, &uncutable);
Body = t2;
}
onlast = TRUE;
c_goal(Body, mod);
c_goal(Body, mod, &uncutable);
}
static void

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@ -396,6 +396,9 @@ static Opdef Ops[] = {
#ifdef TABLING
{"table", fx, 1150},
#endif /* TABLING */
#ifndef UNCUTABLE
{"uncutable", fx, 1150},
#endif /*UNCUTABLE ceh:*/
{";", xfy, 1100},
{"|", xfy, 1100},
/* {";", yf, 1100}, not allowed in ISO */

120
library/cleanup.yap Normal file
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@ -0,0 +1,120 @@
:- module( cleanup, [
call_cleanup/2,
call_cleanup/1,
on_cleanup/1,
cleanup_all/0
]).
/*
public interface:
call_cleanup(Goal).
call_cleanup(Goal,CleanUpGoal).
Goal will be called in a cleanup-context, where any registered
CleanUpGoal inside of that context will be called when Goal is left,
either by a fail, cut or exeption.
It is possible to nest cleanup contexts.
on_cleanup(CleanUpGoal).
registers CleanUpGoal to the current cleanup context.
CleanUpGoal's are executed in reverse order of their registration.
throws an exception if called outside of any cleanup-context.
cleanup_all.
calls all pending CleanUpGoals and resets the cleanup-system to an initial state.
should only be used as one of the last calls in the main program.
hidden predicates:
most private predicates could also be used in special cases, such as manually setting up cleanup-contexts.
Read the Source.
*/
:- meta_predicate
call_cleanup(:,:),
call_cleanup(:),
on_cleanup(:),
on_cleanup(?,:),
on_cleanupz(:),
on_cleanupz(?,:).
:- initialization(init_cleanup).
init_cleanup :-
get_value('cleanup:level',[]),
set_value('cleanup:level',0).
init_cleanup.
% call goal G with a cleanup CL in a cleanup context
call_cleanup(G,CL) :-
needs_cleanup(L),
on_cleanup(L,CL),
(
catch(G,X,(do_cleanup(L),throw(X)))
;
do_cleanup(L)
).
% call a goal G in a cleanup context
call_cleanup(G) :-
needs_cleanup(L),
(
catch(G,X,(do_cleanup(L),throw(X)))
;
do_cleanup(L)
).
% begin cleanup level
needs_cleanup(CL) :-
get_value('cleanup:level',L),
CL is L + 1,
set_value('cleanup:level',CL).
% leave cleanup level, call all registred cleanup predicates within
do_cleanup(CL) :-
CN is CL - 1,
set_value('cleanup:level',CN),
next_cleanup(CL).
next_cleanup(CL) :-
!,recorded(cleanup:handle,(L,G),R),
CL =< L,
erase(R),
(call(G);true),
next_cleanup(CL).
% clean up all remaining stuff / reinitialize cleanup-module
cleanup_all :- do_cleanup(1).
% register a cleanup predicate (normal reverse-order cleanup)
on_cleanup(G) :-
get_value('cleanup:level',L),
on_cleanup(L,G).
on_cleanup(L,G) :-
L =< 0,
throw(no_cleanup_context(G)).
on_cleanup(L,G) :-
callable(G),
recorda(cleanup:handle,(L,G),_).
% register a cleanup predicate (reverse-reverse-order cleanup)
on_cleanupz(G) :-
get_value('cleanup:level',L),
on_cleanupz(L,G).
on_cleanupz(L,G) :-
L =< 0,
throw(no_cleanup_context(G)).
on_cleanupz(L,G) :-
callable(G),
recordz(cleanup:handle,(L,G),_).

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@ -189,7 +189,9 @@ typedef enum {
SequentialPredFlag=0x000020L, /* may not create par. choice points!*/
#endif /* YAPOR */
ProfiledPredFlag = 0x000010L, /* pred is being profiled */
LogUpdatePredFlag= 0x000008L /* dynamic predicate with log. upd. sem.*/
LogUpdatePredFlag= 0x000008L, /* dynamic predicate with log. upd. sem.*/
/* ceh: wtf! 0x000004L is used somewhere? */
UnCutAblePredFlag= 0x000002L /* Predicate might no been cut off */
} pred_flag;
/* profile data */

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@ -39,6 +39,7 @@
'$directive'(use_module(_)).
'$directive'(use_module(_,_)).
'$directive'(use_module(_,_,_)).
'$directive'(uncutable(_)).
'$exec_directive'(multifile(D), _, M) :-
'$system_catch'('$multifile'(D, M), M,
@ -94,6 +95,9 @@
'$wait'(BlockSpec).
'$exec_directive'(table(PredSpec), _, M) :-
'$table'(PredSpec, M).
'$exec_directive'(uncutable(PredSpec), _, M) :-
'$uncutable'(PredSpec, M).
'$exec_directives'((G1,G2), Mode, M) :- !,
'$exec_directives'(G1, Mode, M),
@ -101,8 +105,10 @@
'$exec_directives'(G, Mode, M) :-
'$exec_directive'(G, Mode, M).
'$uncutable'(A/N, Mod) :-
functor(T,A,N),'$flags'(T,Mod,F,F),
NF is F \/ 16'2,
'$flags'(T, Mod, F, NF).
yap_flag(V,Out) :-
var(V), !,

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@ -165,6 +165,8 @@ print_message(Level, Mss) :-
'$preprocess_stack'(Gs, NGs).
'$beautify_hidden_goal'('$recordedp',_,prolog,ClNo,Gs,NGs) :- !,
'$preprocess_stack'(Gs, NGs).
'$beautify_hidden_goal'('$continue_with_command',_,prolog,ClNo,Gs,NGs) :- !,
'$preprocess_stack'(Gs, NGs).
'$beautify_hidden_goal'('$system_catch',_,prolog,ClNo,Gs,NGs) :- !,
'$preprocess_stack'(Gs, NGs).
'$beautify_hidden_goal'('$execute_command',_,prolog,ClNo,Gs,NGs) :- !,