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yap-6.3/C/stackinfo.c

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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: stack.c *
* comments: Stack Introspection *
* *
* Last rev: $Date: 2008-07-22 23:34:44 $,$Author: vsc $ *
* $Log: not supported by cvs2svn $ *
* Revision 1.230 2008/06/02 17:20:28 vsc *
* *
* *
*************************************************************************/
/**
* @file stack.c
* @author VITOR SANTOS COSTA <vsc@VITORs-MacBook-Pro.local>
* @date Tue Sep 8 23:33:02 2015
*
* @brief Get to know what is in your stack.
*
*
*/
#include "Yap.h"
#include "clause.h"
#include "yapio.h"
#include "eval.h"
#include "tracer.h"
#ifdef YAPOR
#include "or.macros.h"
#endif /* YAPOR */
#ifdef TABLING
#include "tab.macros.h"
#endif /* TABLING */
#if HAVE_STRING_H
#include <string.h>
#endif
#include <heapgc.h>
static int static_in_use(PredEntry *, int);
#if !defined(YAPOR) && !defined(THREADS)
static Int search_for_static_predicate_in_use(PredEntry *, int);
static void mark_pred(int, PredEntry *);
static void do_toggle_static_predicates_in_use(int);
#endif
static Int in_use( USES_REGS1 );
static Int toggle_static_predicates_in_use( USES_REGS1 );
static Int PredForCode(yamop *, Atom *, arity_t *, Term *);
static PredEntry *
PredForChoicePt(yamop *p_code, op_numbers *opn) {
while (TRUE) {
op_numbers opnum;
if (!p_code)
return NULL;
opnum = Yap_op_from_opcode(p_code->opc);
if (opn)
*opn = opnum;
switch(opnum) {
case _Nstop:
return NULL;
case _jump:
p_code = p_code->y_u.l.l;
break;
case _retry_me:
case _trust_me:
return p_code->y_u.Otapl.p;
case _retry_exo:
case _retry_all_exo:
return p_code->y_u.lp.p;
case _try_logical:
case _retry_logical:
case _trust_logical:
case _count_retry_logical:
case _count_trust_logical:
case _profiled_retry_logical:
case _profiled_trust_logical:
return p_code->y_u.OtaLl.d->ClPred;
#ifdef TABLING
case _trie_trust_var:
case _trie_retry_var:
case _trie_trust_var_in_pair:
case _trie_retry_var_in_pair:
case _trie_trust_val:
case _trie_retry_val:
case _trie_trust_val_in_pair:
case _trie_retry_val_in_pair:
case _trie_trust_atom:
case _trie_retry_atom:
case _trie_trust_atom_in_pair:
case _trie_retry_atom_in_pair:
case _trie_trust_null:
case _trie_retry_null:
case _trie_trust_null_in_pair:
case _trie_retry_null_in_pair:
case _trie_trust_pair:
case _trie_retry_pair:
case _trie_trust_appl:
case _trie_retry_appl:
case _trie_trust_appl_in_pair:
case _trie_retry_appl_in_pair:
case _trie_trust_extension:
case _trie_retry_extension:
case _trie_trust_double:
case _trie_retry_double:
case _trie_trust_longint:
case _trie_retry_longint:
case _trie_trust_gterm:
case _trie_retry_gterm:
return NULL;
case _table_load_answer:
case _table_try_answer:
case _table_answer_resolution:
case _table_completion:
#ifdef THREADS_CONSUMER_SHARING
case _table_answer_resolution_completion:
#endif /* THREADS_CONSUMER_SHARING */
return NULL; /* ricroc: is this OK? */
/* compile error --> return ENV_ToP(gc_B->cp_cp); */
#endif /* TABLING */
case _or_else:
if (p_code == p_code->y_u.Osblp.l) {
/* repeat */
Atom at = AtomRepeatSpace;
return RepPredProp(PredPropByAtom(at, PROLOG_MODULE));
} else {
return p_code->y_u.Osblp.p0;
}
break;
case _or_last:
#ifdef YAPOR
return p_code->y_u.Osblp.p0;
#else
return p_code->y_u.p.p;
#endif /* YAPOR */
break;
case _count_retry_me:
case _retry_profiled:
case _retry2:
case _retry3:
case _retry4:
p_code = NEXTOP(p_code,l);
break;
default:
return p_code->y_u.Otapl.p;
}
}
return NULL;
}
/**
* Yap_PredForChoicePt(): find out the predicate who generated a CP.
*
* @param cp the choice point
* @param op the YAAM instruction to process next
*
* @return A predixate structure or NULL
*
* usually pretty straightforward, it can fall in trouble with
8 OR-P or tabling.
*/
PredEntry *
Yap_PredForChoicePt(choiceptr cp, op_numbers *op) {
if (cp == NULL)
return NULL;
return PredForChoicePt(cp->cp_ap, op);
}
#if !defined(YAPOR) && !defined(THREADS)
static yamop *cur_clause(PredEntry *pe, yamop *codeptr)
{
StaticClause *cl;
cl = ClauseCodeToStaticClause(pe->cs.p_code.FirstClause);
do {
if (IN_BLOCK(codeptr,cl,cl->ClSize)) {
return cl->ClCode;
}
if (cl->ClCode == pe->cs.p_code.LastClause)
break;
cl = cl->ClNext;
} while (TRUE);
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Yap_Error(SYSTEM_ERROR_INTERNAL,TermNil,"could not find clause for indexing code");
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return(NULL);
}
static yamop *cur_log_upd_clause(PredEntry *pe, yamop *codeptr)
{
LogUpdClause *cl;
cl = ClauseCodeToLogUpdClause(pe->cs.p_code.FirstClause);
do {
if (IN_BLOCK(codeptr,cl->ClCode,cl->ClSize)) {
return((yamop *)cl->ClCode);
}
cl = cl->ClNext;
} while (cl != NULL);
fix error handling
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Yap_Error(SYSTEM_ERROR_INTERNAL,TermNil,"could not find clause for indexing code");
Avoid complaining from strlen `
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return(NULL);
}
static Int
search_for_static_predicate_in_use(PredEntry *p, int check_everything)
{
choiceptr b_ptr = B;
CELL *env_ptr = ENV;
if (check_everything && P) {
PredEntry *pe = EnvPreg(P);
if (p == pe) return TRUE;
pe = EnvPreg(CP);
if (p == pe) return TRUE;
}
do {
PredEntry *pe;
/* check first environments that are younger than our latest choicepoint */
if (check_everything && env_ptr) {
/*
I do not need to check environments for asserts,
only for retracts
*/
while (env_ptr && b_ptr > (choiceptr)env_ptr) {
yamop *cp = (yamop *)env_ptr[E_CP];
PredEntry *pe;
pe = EnvPreg(cp);
if (p == pe) return(TRUE);
if (env_ptr != NULL)
env_ptr = (CELL *)(env_ptr[E_E]);
}
}
/* now mark the choicepoint */
if (b_ptr)
pe = PredForChoicePt(b_ptr->cp_ap, NULL);
else
return FALSE;
if (pe == p) {
if (check_everything)
return TRUE;
PELOCK(38,p);
if (p->PredFlags & IndexedPredFlag) {
yamop *code_p = b_ptr->cp_ap;
yamop *code_beg = p->cs.p_code.TrueCodeOfPred;
/* FIX ME */
if (p->PredFlags & LogUpdatePredFlag) {
LogUpdIndex *cl = ClauseCodeToLogUpdIndex(code_beg);
if (find_owner_log_index(cl, code_p))
b_ptr->cp_ap = cur_log_upd_clause(pe, b_ptr->cp_ap->y_u.Otapl.d);
} else if (p->PredFlags & MegaClausePredFlag) {
StaticIndex *cl = ClauseCodeToStaticIndex(code_beg);
if (find_owner_static_index(cl, code_p))
b_ptr->cp_ap = cur_clause(pe, b_ptr->cp_ap->y_u.Otapl.d);
} else {
/* static clause */
StaticIndex *cl = ClauseCodeToStaticIndex(code_beg);
if (find_owner_static_index(cl, code_p)) {
b_ptr->cp_ap = cur_clause(pe, b_ptr->cp_ap->y_u.Otapl.d);
}
}
}
UNLOCKPE(63,pe);
}
env_ptr = b_ptr->cp_env;
b_ptr = b_ptr->cp_b;
} while (b_ptr != NULL);
return(FALSE);
}
static void
mark_pred(int mark, PredEntry *pe)
{
/* if the predicate is static mark it */
if (pe->ModuleOfPred) {
PELOCK(39,p);
if (mark) {
pe->PredFlags |= InUsePredFlag;
} else {
pe->PredFlags &= ~InUsePredFlag;
}
UNLOCK(pe->PELock);
}
}
/* go up the chain of choice_points and environments,
marking all static predicates that current execution is depending
upon */
static void
do_toggle_static_predicates_in_use(int mask)
{
choiceptr b_ptr = B;
CELL *env_ptr = ENV;
if (b_ptr == NULL)
return;
do {
PredEntry *pe;
/* check first environments that are younger than our latest choicepoint */
while (b_ptr > (choiceptr)env_ptr) {
PredEntry *pe = EnvPreg((yamop *)env_ptr[E_CP]);
mark_pred(mask, pe);
env_ptr = (CELL *)(env_ptr[E_E]);
}
/* now mark the choicepoint */
if ((b_ptr)) {
if ((pe = PredForChoicePt(b_ptr->cp_ap, NULL))) {
mark_pred(mask, pe);
}
}
env_ptr = b_ptr->cp_env;
b_ptr = b_ptr->cp_b;
} while (b_ptr != NULL);
/* mark or unmark all predicates */
STATIC_PREDICATES_MARKED = mask;
}
#endif /* !defined(YAPOR) && !defined(THREADS) */
}
if (p == NULL) {
return 0;
}
clause_was_found(p, pat, parity);
if (p->ModuleOfPred == PROLOG_MODULE)
*pmodule = TermProlog;
else
*pmodule = p->ModuleOfPred;
return -1;
}
/* intruction blocks we found ourselves at */
static PredEntry *
walk_got_lu_block(LogUpdIndex *cl, CODEADDR *startp, CODEADDR *endp)
{
PredEntry *pp = cl->ClPred;
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
return pp;
}
/* intruction blocks we found ourselves at */
static PredEntry *
walk_got_lu_clause(LogUpdClause *cl, CODEADDR *startp, CODEADDR *endp)
{
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
return cl->ClPred;
}
/* we hit a meta-call, so we don't know what is happening */
static PredEntry *
found_meta_call(CODEADDR *startp, CODEADDR *endp)
{
PredEntry *pp = PredMetaCall;
*startp = (CODEADDR)&(pp->OpcodeOfPred);
*endp = (CODEADDR)NEXTOP((yamop *)&(pp->OpcodeOfPred),e);
return pp;
}
/* intruction blocks we found ourselves at */
static PredEntry *
walk_found_c_pred(PredEntry *pp, CODEADDR *startp, CODEADDR *endp)
{
StaticClause *cl = ClauseCodeToStaticClause(pp->CodeOfPred);
*startp = (CODEADDR)&(cl->ClCode);
*endp = (CODEADDR)&(cl->ClCode)+cl->ClSize;
return pp;
}
/* we hit a mega-clause, no point in going on */
static PredEntry *
found_mega_clause(PredEntry *pp, CODEADDR *startp, CODEADDR *endp)
{
MegaClause *mcl = ClauseCodeToMegaClause(pp->cs.p_code.FirstClause);
*startp = (CODEADDR)mcl;
*endp = (CODEADDR)mcl+mcl->ClSize;
return pp;
}
/* we hit a mega-clause, no point in going on */
static PredEntry *
found_idb_clause(yamop *pc, CODEADDR *startp, CODEADDR *endp)
{
LogUpdClause *cl = ClauseCodeToLogUpdClause(pc);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
return cl->ClPred;
}
/* we hit a expand_index, no point in going on */
static PredEntry *
found_expand_index(yamop *pc, CODEADDR *startp, CODEADDR *endp, yamop *codeptr USES_REGS)
{
PredEntry *pp = codeptr->y_u.sssllp.p;
if (pc == codeptr) {
*startp = (CODEADDR)codeptr;
*endp = (CODEADDR)NEXTOP(codeptr,sssllp);
}
return pp;
}
/* we hit a expand_index, no point in going on */
static PredEntry *
found_fail(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS)
{
PredEntry *pp = RepPredProp(Yap_GetPredPropByAtom(AtomFail,CurrentModule));
*startp = *endp = (CODEADDR)FAILCODE;
return pp;
}
/* we hit a expand_index, no point in going on */
static PredEntry *
found_owner_op(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS)
{
PredEntry *pp = ((PredEntry *)(Unsigned(pc)-(CELL)(&(((PredEntry *)NULL)->OpcodeOfPred))));
*startp = (CODEADDR)&(pp->OpcodeOfPred);
*endp = (CODEADDR)NEXTOP((yamop *)&(pp->OpcodeOfPred),e);
return pp;
}
/* we hit a expand_index, no point in going on */
static PredEntry *
found_expand(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS)
{
PredEntry *pp = ((PredEntry *)(Unsigned(pc)-(CELL)(&(((PredEntry *)NULL)->cs.p_code.ExpandCode))));
*startp = (CODEADDR)&(pp->cs.p_code.ExpandCode);
*endp = (CODEADDR)NEXTOP((yamop *)&(pp->cs.p_code.ExpandCode),e);
return pp;
}
static PredEntry *
found_ystop(yamop *pc, int clause_code, CODEADDR *startp, CODEADDR *endp, PredEntry *pp USES_REGS)
{
if (pc == YESCODE) {
pp = RepPredProp(Yap_GetPredPropByAtom(AtomTrue,CurrentModule));
*startp = (CODEADDR)YESCODE;
*endp = (CODEADDR)YESCODE+(CELL)(NEXTOP((yamop *)NULL,e));
return pp;
}
if (!pp) {
/* must be an index */
PredEntry **pep = (PredEntry **)pc->y_u.l.l;
pp = pep[-1];
}
if (pp->PredFlags & LogUpdatePredFlag) {
if (clause_code) {
LogUpdClause *cl = ClauseCodeToLogUpdClause(pc->y_u.l.l);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
} else {
LogUpdIndex *cl = ClauseCodeToLogUpdIndex(pc->y_u.l.l);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
}
} else if (pp->PredFlags & DynamicPredFlag) {
DynamicClause *cl = ClauseCodeToDynamicClause(pc->y_u.l.l);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
} else {
if (clause_code) {
StaticClause *cl = ClauseCodeToStaticClause(pc->y_u.l.l);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
} else {
StaticIndex *cl = ClauseCodeToStaticIndex(pc->y_u.l.l);
*startp = (CODEADDR)cl;
*endp = (CODEADDR)cl+cl->ClSize;
}
}
return pp;
}
static PredEntry *
ClauseInfoForCode(yamop *codeptr, CODEADDR *startp, CODEADDR *endp USES_REGS) {
yamop *pc;
PredEntry *pp = NULL;
int clause_code = FALSE;
if (codeptr >= COMMA_CODE &&
codeptr < FAILCODE) {
pp = RepPredProp(Yap_GetPredPropByFunc(FunctorComma,CurrentModule));
*startp = (CODEADDR)COMMA_CODE;
*endp = (CODEADDR)(FAILCODE-1);
return pp;
}
pc = codeptr;
#include "walkclause.h"
return NULL;
}
PredEntry *
Yap_PredEntryForCode(yamop *codeptr, find_pred_type where_from, CODEADDR *startp, CODEADDR *endp) {
CACHE_REGS
if (where_from == FIND_PRED_FROM_CP) {
PredEntry *pp = PredForChoicePt(codeptr, NULL);
if (cl_code_in_pred(pp, codeptr, startp, endp)) {
return pp;
}
} else if (where_from == FIND_PRED_FROM_ENV) {
PredEntry *pp = EnvPreg(codeptr);
if (cl_code_in_pred(pp, codeptr, startp, endp)) {
return pp;
}
} else {
return ClauseInfoForCode(codeptr, startp, endp PASS_REGS);
}
return NULL;
}
/**
* Detect whether the predicate describing the goal in A1,
* module A2 is currently live in the stack.
*
* @param USES_REGS1
*
* @return liveness
*/
static Int
p_in_use( USES_REGS1 )
{ /* '$in_use'(+P,+Mod) */
PredEntry *pe;
Int out;
pe = get_pred(Deref(ARG1), Deref(ARG2), "$in_use");
if (EndOfPAEntr(pe))
return FALSE;
PELOCK(25,pe);
out = static_in_use(pe,TRUE);
UNLOCKPE(42,pe);
return(out);
}
static Int
p_pred_for_code( USES_REGS1 ) {
yamop *codeptr;
Atom at;
arity_t arity;
Term tmodule = TermProlog;
Int cl;
Term t = Deref(ARG1);
if (IsVarTerm(t)) {
return FALSE;
} else if (IsApplTerm(t) && FunctorOfTerm(t) == FunctorStaticClause) {
codeptr = Yap_ClauseFromTerm(t)->ClCode;
} else if (IsIntegerTerm(t)) {
codeptr = (yamop *)IntegerOfTerm(t);
} else if (IsDBRefTerm(t)) {
codeptr = (yamop *)DBRefOfTerm(t);
} else {
return FALSE;
}
cl = PredForCode(codeptr, &at, &arity, &tmodule);
if (!tmodule) tmodule = TermProlog;
if (cl == 0) {
return Yap_unify(ARG5,MkIntTerm(0));
} else {
return(Yap_unify(ARG2,MkAtomTerm(at)) &&
Yap_unify(ARG3,MkIntegerTerm(arity)) &&
Yap_unify(ARG4,tmodule) &&
Yap_unify(ARG5,MkIntegerTerm(cl)));
}
}
#if LOW_PROF
static void
add_code_in_lu_index(LogUpdIndex *cl, PredEntry *pp)
{
char *code_end = (char *)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp, GPROF_LU_INDEX);
cl = cl->ChildIndex;
while (cl != NULL) {
add_code_in_lu_index(cl, pp);
cl = cl->SiblingIndex;
}
}
static void
add_code_in_static_index(StaticIndex *cl, PredEntry *pp)
{
char *code_end = (char *)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp, GPROF_STATIC_INDEX);
cl = cl->ChildIndex;
while (cl != NULL) {
add_code_in_static_index(cl, pp);
cl = cl->SiblingIndex;
}
}
static void
add_code_in_pred(PredEntry *pp) {
yamop *clcode;
PELOCK(49,pp);
/* check if the codeptr comes from the indexing code */
/* highly likely this is used for indexing */
Yap_inform_profiler_of_clause(&(pp->OpcodeOfPred), &(pp->OpcodeOfPred)+1, pp, GPROF_INIT_OPCODE);
if (pp->PredFlags & (CPredFlag|AsmPredFlag)) {
char *code_end;
StaticClause *cl;
clcode = pp->CodeOfPred;
cl = ClauseCodeToStaticClause(clcode);
code_end = (char *)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp, GPROF_INIT_SYSTEM_CODE);
UNLOCK(pp->PELock);
return;
}
Yap_inform_profiler_of_clause(&(pp->cs.p_code.ExpandCode), &(pp->cs.p_code.ExpandCode)+1, pp, GPROF_INIT_EXPAND);
clcode = pp->cs.p_code.TrueCodeOfPred;
if (pp->PredFlags & IndexedPredFlag) {
if (pp->PredFlags & LogUpdatePredFlag) {
LogUpdIndex *cl = ClauseCodeToLogUpdIndex(clcode);
add_code_in_lu_index(cl, pp);
} else {
StaticIndex *cl = ClauseCodeToStaticIndex(clcode);
add_code_in_static_index(cl, pp);
}
}
clcode = pp->cs.p_code.FirstClause;
if (clcode != NULL) {
if (pp->PredFlags & LogUpdatePredFlag) {
LogUpdClause *cl = ClauseCodeToLogUpdClause(clcode);
do {
char *code_end;
code_end = (char *)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp, GPROF_INIT_LOG_UPD_CLAUSE);
cl = cl->ClNext;
} while (cl != NULL);
} else if (pp->PredFlags & DynamicPredFlag) {
do {
DynamicClause *cl;
CODEADDR code_end;
cl = ClauseCodeToDynamicClause(clcode);
code_end = (CODEADDR)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp, GPROF_INIT_DYNAMIC_CLAUSE);
if (clcode == pp->cs.p_code.LastClause)
break;
clcode = NextDynamicClause(clcode);
} while (TRUE);
} else {
StaticClause *cl = ClauseCodeToStaticClause(clcode);
do {
char *code_end;
code_end = (char *)cl + cl->ClSize;
Yap_inform_profiler_of_clause(cl, code_end, pp,GPROF_INIT_STATIC_CLAUSE);
if (cl->ClCode == pp->cs.p_code.LastClause)
break;
cl = cl->ClNext;
} while (TRUE);
}
}
UNLOCK(pp->PELock);
}
void
Yap_dump_code_area_for_profiler(void) {
ModEntry *me = CurrentModules;
while (me) {
PredEntry *pp = me->PredForME;
while (pp != NULL) {
/* if (pp->ArityOfPE) {
fprintf(stderr,"%s/%d %p\n",
RepAtom(NameOfFunctor(pp->FunctorOfPred))->StrOfAE,
pp->ArityOfPE,
pp);
} else {
fprintf(stderr,"%s %p\n",
RepAtom((Atom)(pp->FunctorOfPred))->StrOfAE,
pp);
}*/
add_code_in_pred(pp);
pp = pp->NextPredOfModule;
}
me = me->NextME;
}
Yap_inform_profiler_of_clause(COMMA_CODE, FAILCODE, RepPredProp(Yap_GetPredPropByFunc(FunctorComma,0)), GPROF_INIT_COMMA);
Yap_inform_profiler_of_clause(FAILCODE, FAILCODE+1, RepPredProp(Yap_GetPredPropByAtom(AtomFail,0)), GPROF_INIT_FAIL);
}
#endif /* LOW_PROF */
static UInt
tree_index_ssz(StaticIndex *x)
{
UInt sz = x->ClSize;
x = x->ChildIndex;
while (x != NULL) {
sz += tree_index_ssz(x);
x = x->SiblingIndex;
}
return sz;
}
static UInt
index_ssz(StaticIndex *x, PredEntry *pe)
{
UInt sz = 0;
yamop *ep = ExpandClausesFirst;
if (pe->PredFlags & MegaClausePredFlag) {
MegaClause *mcl = ClauseCodeToMegaClause(pe->cs.p_code.FirstClause);
if (mcl->ClFlags & ExoMask) {
struct index_t *i = ((struct index_t **)(pe->cs.p_code.FirstClause))[0];
sz = 0;
while (i) {
sz = i->size+sz;
i = i->next;
}
return sz;
}
}
/* expand clause blocks */
while (ep) {
if (ep->y_u.sssllp.p == pe)
sz += (UInt)NEXTOP((yamop *)NULL,sssllp)+ep->y_u.sssllp.s1*sizeof(yamop *);
ep = ep->y_u.sssllp.snext;
}
/* main indexing tree */
sz += tree_index_ssz(x);
return sz;
}
static Int
static_statistics(PredEntry *pe)
{
CACHE_REGS
UInt sz = sizeof(PredEntry), cls = 0, isz = 0;
StaticClause *cl = ClauseCodeToStaticClause(pe->cs.p_code.FirstClause);
if (pe->cs.p_code.NOfClauses > 1 &&
pe->cs.p_code.TrueCodeOfPred != pe->cs.p_code.FirstClause) {
isz = index_ssz(ClauseCodeToStaticIndex(pe->cs.p_code.TrueCodeOfPred), pe);
}
if (pe->PredFlags & MegaClausePredFlag) {
MegaClause *mcl = ClauseCodeToMegaClause(pe->cs.p_code.FirstClause);
return Yap_unify(ARG3, MkIntegerTerm(mcl->ClSize/mcl->ClItemSize)) &&
Yap_unify(ARG4, MkIntegerTerm(mcl->ClSize)) &&
Yap_unify(ARG5, MkIntegerTerm(isz));
}
if (pe->cs.p_code.NOfClauses) {
do {
cls++;
sz += cl->ClSize;
if (cl->ClCode == pe->cs.p_code.LastClause)
break;
cl = cl->ClNext;
} while (TRUE);
}
return Yap_unify(ARG3, MkIntegerTerm(cls)) &&
Yap_unify(ARG4, MkIntegerTerm(sz)) &&
Yap_unify(ARG5, MkIntegerTerm(isz));
}
static Int
p_static_pred_statistics( USES_REGS1 )
{
Int out;
PredEntry *pe;
pe = get_pred( Deref(ARG1), Deref(ARG2), "predicate_statistics");
if (pe == NIL)
return (FALSE);
PELOCK(50,pe);
if (pe->PredFlags & (DynamicPredFlag|LogUpdatePredFlag|UserCPredFlag|AsmPredFlag|CPredFlag|BinaryPredFlag)) {
/* should use '$recordedp' in this case */
UNLOCK(pe->PELock);
return FALSE;
}
out = static_statistics(pe);
UNLOCK(pe->PELock);
return out;
}
static Int
p_predicate_erased_statistics( USES_REGS1 )
{
UInt sz = 0, cls = 0;
UInt isz = 0, icls = 0;
PredEntry *pe;
LogUpdClause *cl = DBErasedList;
LogUpdIndex *icl = DBErasedIList;
Term tpred = ArgOfTerm(2,Deref(ARG1));
Term tmod = ArgOfTerm(1,Deref(ARG1));
if (EndOfPAEntr(pe=get_pred(tpred, tmod, "predicate_erased_statistics")))
return FALSE;
while (cl) {
if (cl->ClPred == pe) {
cls++;
sz += cl->ClSize;
}
cl = cl->ClNext;
}
while (icl) {
if (pe == icl->ClPred) {
icls++;
isz += icl->ClSize;
}
icl = icl->SiblingIndex;
}
return
Yap_unify(ARG2,MkIntegerTerm(cls)) &&
Yap_unify(ARG3,MkIntegerTerm(sz)) &&
Yap_unify(ARG4,MkIntegerTerm(icls)) &&
Yap_unify(ARG5,MkIntegerTerm(isz));
}
#ifdef DEBUG
static Int
p_predicate_lu_cps( USES_REGS1 )
{
return Yap_unify(ARG1, MkIntegerTerm(Yap_LiveCps)) &&
Yap_unify(ARG2, MkIntegerTerm(Yap_FreedCps)) &&
Yap_unify(ARG3, MkIntegerTerm(Yap_DirtyCps)) &&
Yap_unify(ARG4, MkIntegerTerm(Yap_NewCps));
}
#endif
static Int
p_program_continuation( USES_REGS1 )
{
PredEntry *pe = EnvPreg((yamop *)((ENV_Parent(ENV))[E_CP]));
if (pe->ModuleOfPred) {
if (!Yap_unify(ARG1,pe->ModuleOfPred))
return FALSE;
} else {
if (!Yap_unify(ARG1,TermProlog))
return FALSE;
}
if (pe->ArityOfPE) {
if (!Yap_unify(ARG2,MkAtomTerm(NameOfFunctor(pe->FunctorOfPred))))
return FALSE;
if (!Yap_unify(ARG3,MkIntegerTerm(ArityOfFunctor(pe->FunctorOfPred))))
return FALSE;
} else {
if (!Yap_unify(ARG2,MkAtomTerm((Atom)pe->FunctorOfPred)))
return FALSE;
if (!Yap_unify(ARG3,MkIntTerm(0)))
return FALSE;
}
return TRUE;
}
static Term
BuildActivePred(PredEntry *ap, CELL *vect)
{
CACHE_REGS
arity_t i;
if (!ap->ArityOfPE) {
return MkVarTerm();
}
for (i = 0; i < ap->ArityOfPE; i++) {
Term t = Deref(vect[i]);
if (IsVarTerm(t)) {
CELL *pt = VarOfTerm(t);
/* one stack */
if (pt > HR) {
Term nt = MkVarTerm();
Yap_unify(t, nt);
}
}
}
return Yap_MkApplTerm(ap->FunctorOfPred, ap->ArityOfPE, vect);
}
static int
UnifyPredInfo(PredEntry *pe, int start_arg USES_REGS) {
arity_t arity = pe->ArityOfPE;
Term tmod, tname;
if (pe->ModuleOfPred != IDB_MODULE) {
if (pe->ModuleOfPred == PROLOG_MODULE) {
tmod = TermProlog;
} else {
tmod = pe->ModuleOfPred;
}
if (pe->ArityOfPE == 0) {
tname = MkAtomTerm((Atom)pe->FunctorOfPred);
} else {
Functor f = pe->FunctorOfPred;
tname = MkAtomTerm(NameOfFunctor(f));
}
} else {
tmod = pe->ModuleOfPred;
if (pe->PredFlags & NumberDBPredFlag) {
tname = MkIntegerTerm(pe->src.IndxId);
} else if (pe->PredFlags & AtomDBPredFlag) {
tname = MkAtomTerm((Atom)pe->FunctorOfPred);
} else {
Functor f = pe->FunctorOfPred;
tname = MkAtomTerm(NameOfFunctor(f));
}
}
return Yap_unify(XREGS[start_arg], tmod) &&
Yap_unify(XREGS[start_arg+1],tname) &&
Yap_unify(XREGS[start_arg+2],MkIntegerTerm(arity));
}
static Int
ClauseId(yamop *ipc, PredEntry *pe)
{
if (!ipc)
return 0;
return find_code_in_clause(pe, ipc, NULL, NULL);
}
static Int
p_env_info( USES_REGS1 )
{
CELL *env = LCL0-IntegerOfTerm(Deref(ARG1));
yamop *env_cp;
Term env_b, taddr;
if (!env)
return FALSE;
env_b = MkIntegerTerm((Int)(LCL0-(CELL *)env[E_CB]));
env_cp = (yamop *)env[E_CP];
/* pe = PREVOP(env_cp,Osbpp)->y_u.Osbpp.p0; */
taddr = MkIntegerTerm((Int)env);
return Yap_unify(ARG3,MkIntegerTerm((Int)env_cp)) &&
Yap_unify(ARG2, taddr) &&
Yap_unify(ARG4, env_b);
}
static Int
p_cpc_info( USES_REGS1 )
{
PredEntry *pe;
yamop *ipc = (yamop *)IntegerOfTerm(Deref(ARG1));
pe = PREVOP(ipc,Osbpp)->y_u.Osbpp.p0;
return UnifyPredInfo(pe, 2 PASS_REGS) &&
Yap_unify(ARG5,MkIntegerTerm(ClauseId(ipc,pe)));
}
static Int
p_choicepoint_info( USES_REGS1 )
{
choiceptr cptr = (choiceptr)(LCL0-IntegerOfTerm(Deref(ARG1)));
PredEntry *pe = NULL;
int go_on = TRUE;
yamop *ipc = cptr->cp_ap;
yamop *ncl = NULL;
Term t = TermNil, taddr;
taddr = MkIntegerTerm((Int)cptr);
while (go_on) {
op_numbers opnum = Yap_op_from_opcode(ipc->opc);
go_on = FALSE;
switch (opnum) {
#ifdef TABLING
case _table_load_answer:
#ifdef LOW_LEVEL_TRACER
pe = LOAD_CP(cptr)->cp_pred_entry;
#else
pe = UndefCode;
#endif
t = MkVarTerm();
break;
case _table_try_answer:
case _table_retry_me:
case _table_trust_me:
case _table_retry:
case _table_trust:
case _table_completion:
#ifdef THREADS_CONSUMER_SHARING
case _table_answer_resolution_completion:
#endif /* THREADS_CONSUMER_SHARING */
#ifdef LOW_LEVEL_TRACER
#ifdef DETERMINISTIC_TABLING
if (IS_DET_GEN_CP(cptr)) {
pe = DET_GEN_CP(cptr)->cp_pred_entry;
t = MkVarTerm();
} else
#endif /* DETERMINISTIC_TABLING */
{
pe = GEN_CP(cptr)->cp_pred_entry;
t = BuildActivePred(pe, (CELL *)(GEN_CP(B) + 1));
}
#else
pe = UndefCode;
t = MkVarTerm();
#endif
break;
case _table_answer_resolution:
#ifdef LOW_LEVEL_TRACER
pe = CONS_CP(cptr)->cp_pred_entry;
#else
pe = UndefCode;
#endif
t = MkVarTerm();
break;
case _trie_trust_var:
case _trie_retry_var:
case _trie_trust_var_in_pair:
case _trie_retry_var_in_pair:
case _trie_trust_val:
case _trie_retry_val:
case _trie_trust_val_in_pair:
case _trie_retry_val_in_pair:
case _trie_trust_atom:
case _trie_retry_atom:
case _trie_trust_atom_in_pair:
case _trie_retry_atom_in_pair:
case _trie_trust_null:
case _trie_retry_null:
case _trie_trust_null_in_pair:
case _trie_retry_null_in_pair:
case _trie_trust_pair:
case _trie_retry_pair:
case _trie_trust_appl:
case _trie_retry_appl:
case _trie_trust_appl_in_pair:
case _trie_retry_appl_in_pair:
case _trie_trust_extension:
case _trie_retry_extension:
case _trie_trust_double:
case _trie_retry_double:
case _trie_trust_longint:
case _trie_retry_longint:
case _trie_trust_gterm:
case _trie_retry_gterm:
pe = UndefCode;
t = MkVarTerm();
break;
#endif /* TABLING */
case _try_logical:
case _retry_logical:
case _trust_logical:
case _count_retry_logical:
case _count_trust_logical:
case _profiled_retry_logical:
case _profiled_trust_logical:
ncl = ipc->y_u.OtaLl.d->ClCode;
pe = ipc->y_u.OtaLl.d->ClPred;
t = BuildActivePred(pe, cptr->cp_args);
break;
case _or_else:
pe = ipc->y_u.Osblp.p0;
ncl = ipc;
t = Yap_MkNewApplTerm(FunctorOr, 2);
break;
case _or_last:
#ifdef YAPOR
pe = ipc->y_u.Osblp.p0;
#else
pe = ipc->y_u.p.p;
#endif
ncl = ipc;
t = Yap_MkNewApplTerm(FunctorOr, 2);
break;
case _retry2:
case _retry3:
case _retry4:
pe = NULL;
t = TermNil;
ipc = NEXTOP(ipc,l);
if (!ncl)
ncl = ipc->y_u.Otapl.d;
go_on = TRUE;
break;
case _jump:
pe = NULL;
t = TermNil;
ipc = ipc->y_u.l.l;
go_on = TRUE;
break;
case _retry_c:
case _retry_userc:
ncl = NEXTOP(ipc,OtapFs);
pe = ipc->y_u.OtapFs.p;
t = BuildActivePred(pe, cptr->cp_args);
break;
case _retry_profiled:
case _count_retry:
pe = NULL;
t = TermNil;
ncl = ipc->y_u.Otapl.d;
ipc = NEXTOP(ipc,p);
go_on = TRUE;
break;
case _retry_me:
case _trust_me:
case _count_retry_me:
case _count_trust_me:
case _profiled_retry_me:
case _profiled_trust_me:
case _retry_and_mark:
case _profiled_retry_and_mark:
case _retry:
case _trust:
if (!ncl)
ncl = ipc->y_u.Otapl.d;
pe = ipc->y_u.Otapl.p;
t = BuildActivePred(pe, cptr->cp_args);
break;
case _retry_exo:
case _retry_all_exo:
ncl = NULL;
pe = ipc->y_u.lp.p;
t = BuildActivePred(pe, cptr->cp_args);
break;
case _Nstop:
{
Atom at = AtomLive;
t = MkAtomTerm(at);
pe = RepPredProp(PredPropByAtom(at, CurrentModule));
}
break;
case _Ystop:
default:
return FALSE;
}
}
return UnifyPredInfo(pe, 3 PASS_REGS) &&
Yap_unify(ARG2, taddr) &&
Yap_unify(ARG6,t) &&
Yap_unify(ARG7,MkIntegerTerm(ClauseId(ncl,pe)));
}
void
Yap_InitCdMgr(void)
{
CACHE_REGS
Term cm = CurrentModule;
Yap_InitCPred("in_use", 2, in_use, HiddenPredFlag|TestPredFlag | SafePredFlag|SyncPredFlag);
Yap_InitCPred("toggle_static_predicates_in_use", 0, p_toggle_static_predicates_in_use, HiddenPredFlag|SafePredFlag|SyncPredFlag);
}
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