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yap-6.3/C/init.c
vscosta d4a9f97cdd InitTime is done automatically.
2016-04-05 02:21:19 +01:00

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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: init.c *
* Last rev: *
* mods: *
* comments: initializing a prolog session *
* *
*************************************************************************/
#ifdef SCCS
static char SccsId[] = "%W% %G%";
#endif
/*
* The code from this file is used to initialize the environment for prolog
*
*/
#define __INIT_C__ 1
#include "Yap.h"
#include "alloc.h"
#include "clause.h"
#include "yapio.h"
#include <stdlib.h>
#include "Foreign.h"
#ifdef LOW_LEVEL_TRACER
#include "tracer.h"
#endif
#ifdef YAPOR
#ifdef YAPOR_COW
#include <signal.h>
#endif /* YAPOR_COW */
#include "or.macros.h"
#endif /* YAPOR */
#if defined(YAPOR) || defined(TABLING)
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#endif /* YAPOR || TABLING */
#if HAVE_STRING_H
#include <string.h>
#endif
int Yap_output_msg = FALSE;
#if DEBUG
#define LOGFILE "logfile"
#ifdef MACC
static void InTTYLine(char *);
#endif
#endif
static void SetOp(int, int, char *, Term);
static void InitOps(void);
static void InitDebug(void);
static void CleanBack(PredEntry *, CPredicate, CPredicate, CPredicate);
static void InitStdPreds(void);
static void InitCodes(void);
static void InitVersion(void);
void exit(int);
static void InitWorker(int wid);
/************** YAP PROLOG GLOBAL VARIABLES *************************/
/************* variables related to memory allocation ***************/
ADDR Yap_HeapBase;
/************** declarations local to init.c ************************/
static char *optypes[] = {"", "xfx", "xfy", "yfx", "xf", "yf", "fx", "fy"};
/* OS page size for memory allocation */
size_t Yap_page_size;
#if DEBUG
#if COROUTINING
int Yap_Portray_delays = FALSE;
#endif
#endif
/**
@defgroup Operators Summary of YAP Predefined Operators
@ingroup Syntax
@{
The Prolog syntax caters for operators of three main kinds:
+ prefix;
+ infix;
+ postfix.
Each operator has precedence in the range 1 to 1200, and this
precedence is used to disambiguate expressions where the structure of the
term denoted is not made explicit using brackets. The operator of higher
precedence is the main functor.
If there are two operators with the highest precedence, the ambiguity
is solved analyzing the types of the operators. The possible infix types are:
_xfx_, _xfy_, and _yfx_.
With an operator of type _xfx_ both sub-expressions must have lower
precedence than the operator itself, unless they are bracketed (which
assigns to them zero precedence). With an operator type _xfy_ only the
left-hand sub-expression must have lower precedence. The opposite happens
for _yfx_ type.
A prefix operator can be of type _fx_ or _fy_.
A postfix operator can be of type _xf_ or _yf_.
The meaning of the notation is analogous to the above.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a + b * c
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
means
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a + (b * c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
as + and \* have the following types and precedences:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:-op(500,yfx,'+').
:-op(400,yfx,'*').
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now defining
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:-op(700,xfy,'++').
:-op(700,xfx,'=:=').
a ++ b =:= c
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
means
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a ++ (b =:= c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The following is the list of the declarations of the predefined operators:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:-op(1200,fx,['?-', ':-']).
:-op(1200,xfx,[':-','-->']).
:-op(1150,fx,[block,dynamic,mode,public,multifile,meta_predicate,
sequential,table,initialization]).
:-op(1100,xfy,[';','|']).
:-op(1050,xfy,->).
:-op(1000,xfy,',').
:-op(999,xfy,'.').
:-op(900,fy,['\+', not]).
:-op(900,fx,[nospy, spy]).
:-op(700,xfx,[@>=,@=<,@<,@>,<,=,>,=:=,=\=,\==,>=,=<,==,\=,=..,is]).
:-op(500,yfx,['\/','/\','+','-']).
:-op(500,fx,['+','-']).
:-op(400,yfx,['<<','>>','//','*','/']).
:-op(300,xfx,mod).
:-op(200,xfy,['^','**']).
:-op(50,xfx,same).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#define xfx 1
#define xfy 2
#define yfx 3
#define xf 4
#define yf 5
#define fx 6
#define fy 7
int Yap_IsOpType(char *type) {
int i;
for (i = 1; i <= 7; ++i)
if (strcmp(type, optypes[i]) == 0)
break;
return (i <= 7);
}
static int OpDec(int p, const char *type, Atom a, Term m) {
int i;
AtomEntry *ae = RepAtom(a);
OpEntry *info;
if (m == TermProlog)
m = PROLOG_MODULE;
else if (m == USER_MODULE)
m = PROLOG_MODULE;
for (i = 1; i <= 7; ++i)
if (strcmp(type, optypes[i]) == 0)
break;
if (i > 7) {
Yap_Error(DOMAIN_ERROR_OPERATOR_SPECIFIER, MkAtomTerm(Yap_LookupAtom(type)),
"op/3");
return (FALSE);
}
if (p) {
if (i == 1 || i == 2 || i == 4)
p |= DcrlpFlag;
if (i == 1 || i == 3 || i == 6)
p |= DcrrpFlag;
}
WRITE_LOCK(ae->ARWLock);
info = Yap_GetOpPropForAModuleHavingALock(ae, m);
if (EndOfPAEntr(info)) {
info = (OpEntry *)Yap_AllocAtomSpace(sizeof(OpEntry));
info->KindOfPE = Ord(OpProperty);
info->OpModule = m;
info->OpName = a;
// LOCK(OpListLock);
info->OpNext = OpList;
OpList = info;
// UNLOCK(OpListLock);
AddPropToAtom(ae, (PropEntry *)info);
INIT_RWLOCK(info->OpRWLock);
WRITE_LOCK(info->OpRWLock);
WRITE_UNLOCK(ae->ARWLock);
info->Prefix = info->Infix = info->Posfix = 0;
} else {
WRITE_LOCK(info->OpRWLock);
WRITE_UNLOCK(ae->ARWLock);
}
if (i <= 3) {
if (trueGlobalPrologFlag(ISO_FLAG) &&
info->Posfix != 0) /* there is a posfix operator */ {
/* ISO dictates */
WRITE_UNLOCK(info->OpRWLock);
Yap_Error(PERMISSION_ERROR_CREATE_OPERATOR, MkAtomTerm(a), "op/3");
return FALSE;
}
info->Infix = p;
} else if (i <= 5) {
if (trueGlobalPrologFlag(ISO_FLAG) &&
info->Infix != 0) /* there is an infix operator */ {
/* ISO dictates */
WRITE_UNLOCK(info->OpRWLock);
Yap_Error(PERMISSION_ERROR_CREATE_OPERATOR, MkAtomTerm(a), "op/3");
return FALSE;
}
info->Posfix = p;
} else {
info->Prefix = p;
}
WRITE_UNLOCK(info->OpRWLock);
return (TRUE);
}
int Yap_OpDec(int p, char *type, Atom a, Term m) {
return (OpDec(p, type, a, m));
}
static void SetOp(int p, int type, char *at, Term m) {
#if DEBUG
if (GLOBAL_Option[5])
fprintf(stderr, "[setop %d %s %s]\n", p, optypes[type], at);
#endif
OpDec(p, optypes[type], Yap_LookupAtom(at), m);
}
/* Gets the info about an operator in a prop */
Atom Yap_GetOp(OpEntry *pp, int *prio, int fix) {
int n;
SMALLUNSGN p;
if (fix == 0) {
p = pp->Prefix;
if (p & DcrrpFlag)
n = 6, *prio = (p ^ DcrrpFlag);
else
n = 7, *prio = p;
} else if (fix == 1) {
p = pp->Posfix;
if (p & DcrlpFlag)
n = 4, *prio = (p ^ DcrlpFlag);
else
n = 5, *prio = p;
} else {
p = pp->Infix;
if ((p & DcrrpFlag) && (p & DcrlpFlag))
n = 1, *prio = (p ^ (DcrrpFlag | DcrlpFlag));
else if (p & DcrrpFlag)
n = 3, *prio = (p ^ DcrrpFlag);
else if (p & DcrlpFlag)
n = 2, *prio = (p ^ DcrlpFlag);
else
n = 4, *prio = p;
}
return Yap_LookupAtom(optypes[n]);
}
typedef struct OPSTRUCT {
char *opName;
short int opType, opPrio;
} Opdef;
static Opdef Ops[] = {{":-", xfx, 1200},
{"-->", xfx, 1200},
{"?-", fx, 1200},
{":-", fx, 1200},
{"dynamic", fx, 1150},
{"thread_local", fx, 1150},
{"initialization", fx, 1150},
{"volatile", fx, 1150},
{"mode", fx, 1150},
{"public", fx, 1150},
{"multifile", fx, 1150},
{"meta_predicate", fx, 1150},
{"module_transparent", fx, 1150},
{"discontiguous", fx, 1150},
#ifdef YAPOR
{"sequential", fx, 1150},
#endif /* YAPOR */
#ifdef TABLING
{"table", fx, 1150},
#endif /* TABLING */
#ifndef UNCUTABLE
{"uncutable", fx, 1150},
#endif /*UNCUTABLE ceh:*/
{"|", xfy, 1105},
{";", xfy, 1100},
/* {";", yf, 1100}, not allowed in ISO */
{"->", xfy, 1050},
{"*->", xfy, 1050},
{",", xfy, 1000},
{".", xfy, 999},
{"\\+", fy, 900},
{"not", fy, 900},
{"=", xfx, 700},
{"\\=", xfx, 700},
{"is", xfx, 700},
{"=..", xfx, 700},
{"==", xfx, 700},
{"\\==", xfx, 700},
{"@<", xfx, 700},
{"@>", xfx, 700},
{"@=<", xfx, 700},
{"@>=", xfx, 700},
{"=@=", xfx, 700},
{"\\=@=", xfx, 700},
{"=:=", xfx, 700},
{"=\\=", xfx, 700},
{"<", xfx, 700},
{">", xfx, 700},
{"=<", xfx, 700},
{">=", xfx, 700},
{"as", xfx, 600},
{":", xfy, 600},
{"+", yfx, 500},
{"-", yfx, 500},
{"/\\", yfx, 500},
{"\\/", yfx, 500},
{"><", yfx, 500},
{"#", yfx, 500},
{"rdiv", yfx, 400},
{"div", yfx, 400},
{"xor", yfx, 400},
{"*", yfx, 400},
{"/", yfx, 400},
{"//", yfx, 400},
{"<<", yfx, 400},
{">>", yfx, 400},
{"mod", yfx, 400},
{"rem", yfx, 400},
{"+", fy, 200},
{"-", fy, 200},
{"\\", fy, 200},
{"//", yfx, 400},
{"**", xfx, 200},
{"^", xfy, 200}};
static void InitOps(void) {
unsigned int i;
for (i = 0; i < sizeof(Ops) / sizeof(*Ops); ++i)
SetOp(Ops[i].opPrio, Ops[i].opType, Ops[i].opName, PROLOG_MODULE);
}
/// @}
#if DEBUG
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#endif
static void InitDebug(void) {
Atom At;
#if DEBUG
int i;
for (i = 1; i < 20; ++i)
GLOBAL_Option[i] = 0;
if (Yap_output_msg) {
char ch;
#if HAVE_ISATTY
if (!isatty(0)) {
return;
}
#endif
fprintf(stderr, "absmi address:%p\n", FunAdr(Yap_absmi));
fprintf(stderr, "Set Trace Options:\n");
fprintf(stderr, "a getch\t\tb token\t\tc Lookup\td LookupVar\ti Index\n");
fprintf(stderr, "e SetOp\t\tf compile\tg icode\t\th boot\t\tl log\n");
fprintf(stderr, "m Machine\t p parser\n");
while ((ch = putchar(getchar())) != '\n')
if (ch >= 'a' && ch <= 'z')
GLOBAL_Option[ch - 'a' + 1] = 1;
if (GLOBAL_Option['l' - 96]) {
GLOBAL_logfile = fopen(LOGFILE, "w");
if (GLOBAL_logfile == NULL) {
fprintf(stderr, "can not open %s\n", LOGFILE);
getchar();
exit(0);
}
fprintf(stderr, "logging session to file 'logfile'\n");
#ifdef MAC
Yap_SetTextFile(LOGFILE);
lp = my_line;
curfile = Nill;
#endif
}
}
#endif
/* Set at full leash */
At = AtomLeash;
Yap_PutValue(At, MkIntTerm(15));
}
static UInt update_flags_from_prolog(UInt flags, PredEntry *pe) {
if (pe->PredFlags & MetaPredFlag)
flags |= MetaPredFlag;
if (pe->PredFlags & SourcePredFlag)
flags |= SourcePredFlag;
if (pe->PredFlags & SequentialPredFlag)
flags |= SequentialPredFlag;
if (pe->PredFlags & UDIPredFlag)
flags |= UDIPredFlag;
if (pe->PredFlags & ModuleTransparentPredFlag)
flags |= ModuleTransparentPredFlag;
if (pe->PredFlags & StandardPredFlag)
flags |= StandardPredFlag;
return flags;
}
void Yap_InitCPred(const char *Name, arity_t Arity, CPredicate code,
pred_flags_t flags) {
CACHE_REGS
Atom atom = NIL;
PredEntry *pe = NULL;
yamop *p_code;
StaticClause *cl = NULL;
Functor f = NULL;
while (atom == NIL) {
if (flags & UserCPredFlag)
atom = Yap_LookupAtom(Name);
else
atom = Yap_FullLookupAtom(Name);
if (atom == NIL && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (Arity) {
while (!f) {
f = Yap_MkFunctor(atom, Arity);
if (!f && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
}
while (pe == NULL) {
if (Arity)
pe = RepPredProp(PredPropByFunc(f, CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom, CurrentModule));
if (!pe && !Yap_growheap(FALSE, sizeof(PredEntry), NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (pe->PredFlags & CPredFlag) {
/* already exists */
flags = update_flags_from_prolog(flags, pe);
cl = ClauseCodeToStaticClause(pe->CodeOfPred);
if ((flags | StandardPredFlag | CPredFlag) != pe->PredFlags) {
Yap_ClauseSpace -= cl->ClSize;
Yap_FreeCodeSpace((ADDR)cl);
cl = NULL;
}
}
p_code = cl->ClCode;
while (!cl) {
UInt sz;
if (flags & SafePredFlag) {
sz = (CELL)NEXTOP(NEXTOP(NEXTOP(p_code, Osbpp), p), l);
} else {
sz = (CELL)NEXTOP(NEXTOP(NEXTOP(NEXTOP(NEXTOP(p_code, e), p), Osbpp), p),
l);
}
cl = (StaticClause *)Yap_AllocCodeSpace(sz);
if (!cl) {
if (!Yap_growheap(FALSE, sz, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
} else {
Yap_ClauseSpace += sz;
cl->ClFlags = StaticMask;
cl->ClNext = NULL;
cl->ClSize = sz;
cl->usc.ClLine = Yap_source_line_no();
p_code = cl->ClCode;
}
}
pe->CodeOfPred = p_code;
pe->PredFlags = flags | StandardPredFlag | CPredFlag;
pe->src.OwnerFile = Yap_ConsultingFile(PASS_REGS1);
pe->cs.f_code = code;
if (!(flags & SafePredFlag)) {
p_code->opc = Yap_opcode(_allocate);
p_code = NEXTOP(p_code, e);
}
if (flags & UserCPredFlag)
p_code->opc = Yap_opcode(_call_usercpred);
else
p_code->opc = Yap_opcode(_call_cpred);
p_code->y_u.Osbpp.bmap = NULL;
p_code->y_u.Osbpp.s = -Signed(RealEnvSize);
p_code->y_u.Osbpp.p = p_code->y_u.Osbpp.p0 = pe;
p_code = NEXTOP(p_code, Osbpp);
if (!(flags & SafePredFlag)) {
p_code->opc = Yap_opcode(_deallocate);
p_code->y_u.p.p = pe;
p_code = NEXTOP(p_code, p);
}
p_code->opc = Yap_opcode(_procceed);
p_code->y_u.p.p = pe;
p_code = NEXTOP(p_code, p);
p_code->opc = Yap_opcode(_Ystop);
p_code->y_u.l.l = cl->ClCode;
pe->OpcodeOfPred = pe->CodeOfPred->opc;
}
bool Yap_AddCallToFli(PredEntry *pe, CPredicate call) {
yamop *p_code;
if (pe->PredFlags & BackCPredFlag) {
p_code = (yamop *)(pe->cs.p_code.FirstClause);
p_code->y_u.OtapFs.f = call;
return true;
} else if (pe->PredFlags & CPredFlag) {
pe->cs.f_code = call;
return true;
} else {
return false;
}
}
bool Yap_AddRetryToFli(PredEntry *pe, CPredicate re) {
yamop *p_code;
if (pe->PredFlags & BackCPredFlag) {
p_code = (yamop *)(pe->cs.p_code.FirstClause);
p_code = NEXTOP(p_code, OtapFs);
p_code->y_u.OtapFs.f = re;
return true;
} else {
return false;
}
}
bool Yap_AddCutToFli(PredEntry *pe, CPredicate CUT) {
yamop *p_code;
if (pe->PredFlags & BackCPredFlag) {
p_code = (yamop *)(pe->cs.p_code.FirstClause);
p_code = NEXTOP(p_code, OtapFs);
p_code = NEXTOP(p_code, OtapFs);
p_code->y_u.OtapFs.f = CUT;
return true;
} else {
return false;
}
}
void Yap_InitCmpPred(const char *Name, arity_t Arity, CmpPredicate cmp_code,
pred_flags_t flags) {
CACHE_REGS
Atom atom = NIL;
PredEntry *pe = NULL;
yamop *p_code = NULL;
StaticClause *cl = NULL;
Functor f = NULL;
while (atom == NIL) {
atom = Yap_FullLookupAtom(Name);
if (atom == NIL && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (Arity) {
while (!f) {
f = Yap_MkFunctor(atom, Arity);
if (!f && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
}
while (pe == NULL) {
if (Arity)
pe = RepPredProp(PredPropByFunc(f, CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom, CurrentModule));
if (!pe && !Yap_growheap(FALSE, sizeof(PredEntry), NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (pe->PredFlags & BinaryPredFlag) {
flags = update_flags_from_prolog(flags, pe);
p_code = pe->CodeOfPred;
/* already exists */
} else {
while (!cl) {
UInt sz = sizeof(StaticClause) +
(CELL)NEXTOP(NEXTOP(NEXTOP(((yamop *)NULL), plxxs), p), l);
cl = (StaticClause *)Yap_AllocCodeSpace(sz);
if (!cl) {
if (!Yap_growheap(FALSE, sz, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s",
Name);
return;
}
} else {
Yap_ClauseSpace += sz;
cl->ClFlags = StaticMask | StandardPredFlag;
cl->ClNext = NULL;
cl->ClSize = sz;
cl->usc.ClLine = Yap_source_line_no();
p_code = cl->ClCode;
break;
}
}
}
// pe->PredFlags = flags | StandardPredFlag;
pe->CodeOfPred = p_code;
pe->cs.d_code = cmp_code;
pe->ModuleOfPred = CurrentModule;
p_code->opc = pe->OpcodeOfPred = Yap_opcode(_call_bfunc_xx);
p_code->y_u.plxxs.p = pe;
p_code->y_u.plxxs.f = FAILCODE;
p_code->y_u.plxxs.x1 = Yap_emit_x(1);
p_code->y_u.plxxs.x2 = Yap_emit_x(2);
p_code->y_u.plxxs.flags = Yap_compile_cmp_flags(pe);
p_code = NEXTOP(p_code, plxxs);
p_code->opc = Yap_opcode(_procceed);
p_code->y_u.p.p = pe;
p_code = NEXTOP(p_code, p);
p_code->opc = Yap_opcode(_Ystop);
p_code->y_u.l.l = cl->ClCode;
}
void Yap_InitAsmPred(const char *Name, arity_t Arity, int code, CPredicate def,
pred_flags_t flags) {
CACHE_REGS
Atom atom = NIL;
PredEntry *pe = NULL;
Functor f = NULL;
while (atom == NIL) {
atom = Yap_FullLookupAtom(Name);
if (atom == NIL && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (Arity) {
while (!f) {
f = Yap_MkFunctor(atom, Arity);
if (!f && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
}
while (pe == NULL) {
if (Arity)
pe = RepPredProp(PredPropByFunc(f, CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom, CurrentModule));
if (!pe && !Yap_growheap(FALSE, sizeof(PredEntry), NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
flags |= AsmPredFlag | StandardPredFlag | (code);
if (pe->PredFlags & AsmPredFlag) {
flags = update_flags_from_prolog(flags, pe);
/* already exists */
}
pe->PredFlags = flags;
pe->cs.f_code = def;
pe->ModuleOfPred = CurrentModule;
if (def != NULL) {
yamop *p_code = ((StaticClause *)NULL)->ClCode;
StaticClause *cl;
if (pe->CodeOfPred == (yamop *)(&(pe->OpcodeOfPred))) {
if (flags & SafePredFlag) {
cl = (StaticClause *)Yap_AllocCodeSpace(
(CELL)NEXTOP(NEXTOP(NEXTOP(((yamop *)p_code), Osbpp), p), l));
} else {
cl = (StaticClause *)Yap_AllocCodeSpace((CELL)NEXTOP(
NEXTOP(NEXTOP(NEXTOP(NEXTOP(((yamop *)p_code), e), Osbpp), p), p),
l));
}
if (!cl) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "No Heap Space in InitAsmPred");
return;
}
Yap_ClauseSpace +=
(CELL)NEXTOP(NEXTOP(NEXTOP(((yamop *)p_code), Osbpp), p), l);
} else {
cl = ClauseCodeToStaticClause(pe->CodeOfPred);
}
cl->ClFlags = StaticMask;
cl->ClNext = NULL;
if (flags & SafePredFlag) {
cl->ClSize = (CELL)NEXTOP(NEXTOP(NEXTOP(((yamop *)p_code), Osbpp), e), e);
} else {
cl->ClSize = (CELL)NEXTOP(
NEXTOP(NEXTOP(NEXTOP(NEXTOP(((yamop *)p_code), e), Osbpp), p), e), e);
}
cl->usc.ClLine = Yap_source_line_no();
p_code = cl->ClCode;
pe->CodeOfPred = p_code;
if (!(flags & SafePredFlag)) {
p_code->opc = Yap_opcode(_allocate);
p_code = NEXTOP(p_code, e);
}
p_code->opc = Yap_opcode(_call_cpred);
p_code->y_u.Osbpp.bmap = NULL;
p_code->y_u.Osbpp.s = -Signed(RealEnvSize);
p_code->y_u.Osbpp.p = p_code->y_u.Osbpp.p0 = pe;
p_code = NEXTOP(p_code, Osbpp);
if (!(flags & SafePredFlag)) {
p_code->opc = Yap_opcode(_deallocate);
p_code->y_u.p.p = pe;
p_code = NEXTOP(p_code, p);
}
p_code->opc = Yap_opcode(_procceed);
p_code->y_u.p.p = pe;
p_code = NEXTOP(p_code, p);
p_code->opc = Yap_opcode(_Ystop);
p_code->y_u.l.l = cl->ClCode;
pe->OpcodeOfPred = pe->CodeOfPred->opc;
} else {
pe->OpcodeOfPred = Yap_opcode(_undef_p);
pe->CodeOfPred = (yamop *)(&(pe->OpcodeOfPred));
}
}
static void CleanBack(PredEntry *pe, CPredicate Start, CPredicate Cont,
CPredicate Cut) {
yamop *code;
if (pe->cs.p_code.FirstClause != pe->cs.p_code.LastClause ||
pe->cs.p_code.TrueCodeOfPred != pe->cs.p_code.FirstClause ||
pe->CodeOfPred != pe->cs.p_code.FirstClause) {
Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil,
"initiating a C Pred with backtracking");
return;
}
code = (yamop *)(pe->cs.p_code.FirstClause);
code->y_u.OtapFs.p = pe;
if (pe->PredFlags & UserCPredFlag)
code->opc = Yap_opcode(_try_userc);
else
code->opc = Yap_opcode(_try_c);
#ifdef YAPOR
INIT_YAMOP_LTT(code, 2);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code->y_u.OtapFs.f = Start;
code = NEXTOP(code, OtapFs);
if (pe->PredFlags & UserCPredFlag)
code->opc = Yap_opcode(_retry_userc);
else
code->opc = Yap_opcode(_retry_c);
#ifdef YAPOR
INIT_YAMOP_LTT(code, 1);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code->y_u.OtapFs.f = Cont;
code = NEXTOP(code, OtapFs);
if (pe->PredFlags & UserCPredFlag)
code->opc = Yap_opcode(_cut_c);
else
code->opc = Yap_opcode(_cut_userc);
code->y_u.OtapFs.p = pe;
code->y_u.OtapFs.f = Cut;
}
void Yap_InitCPredBack(const char *Name, arity_t Arity, arity_t Extra,
CPredicate Call, CPredicate Retry, pred_flags_t flags) {
Yap_InitCPredBack_(Name, Arity, Extra, Call, Retry, NULL, flags);
}
void Yap_InitCPredBackCut(const char *Name, arity_t Arity, arity_t Extra,
CPredicate Start, CPredicate Cont, CPredicate Cut,
pred_flags_t flags) {
Yap_InitCPredBack_(Name, Arity, Extra, Start, Cont, Cut, flags);
}
void Yap_InitCPredBack_(const char *Name, arity_t Arity, arity_t Extra,
CPredicate Start, CPredicate Cont, CPredicate Cut,
pred_flags_t flags) {
CACHE_REGS
PredEntry *pe = NULL;
Atom atom = NIL;
Functor f = NULL;
while (atom == NIL) {
atom = Yap_FullLookupAtom(Name);
if (atom == NIL && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (Arity) {
while (!f) {
f = Yap_MkFunctor(atom, Arity);
if (!f && !Yap_growheap(FALSE, 0L, NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
}
while (pe == NULL) {
if (Arity)
pe = RepPredProp(PredPropByFunc(f, CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom, CurrentModule));
if (!pe && !Yap_growheap(FALSE, sizeof(PredEntry), NULL)) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "while initializing %s", Name);
return;
}
}
if (pe->cs.p_code.FirstClause != NIL) {
flags = update_flags_from_prolog(flags, pe);
CleanBack(pe, Start, Cont, Cut);
} else {
StaticClause *cl;
yamop *code = ((StaticClause *)NULL)->ClCode;
UInt sz =
(CELL)NEXTOP(NEXTOP(NEXTOP(NEXTOP(code, OtapFs), OtapFs), OtapFs), l);
if (flags & UserCPredFlag)
pe->PredFlags = UserCPredFlag | BackCPredFlag | CompiledPredFlag | flags;
else
pe->PredFlags = CompiledPredFlag | StandardPredFlag | BackCPredFlag;
#ifdef YAPOR
pe->PredFlags |= SequentialPredFlag;
#endif /* YAPOR */
cl = (StaticClause *)Yap_AllocCodeSpace(sz);
if (cl == NULL) {
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, "No Heap Space in InitCPredBack");
return;
}
cl->ClFlags = StaticMask;
cl->ClNext = NULL;
Yap_ClauseSpace += sz;
cl->ClSize =
(CELL)NEXTOP(NEXTOP(NEXTOP(NEXTOP(code, OtapFs), OtapFs), OtapFs), e);
cl->usc.ClLine = Yap_source_line_no();
code = cl->ClCode;
pe->cs.p_code.TrueCodeOfPred = pe->CodeOfPred = pe->cs.p_code.FirstClause =
pe->cs.p_code.LastClause = code;
if (flags & UserCPredFlag)
pe->OpcodeOfPred = code->opc = Yap_opcode(_try_userc);
else
pe->OpcodeOfPred = code->opc = Yap_opcode(_try_c);
code->y_u.OtapFs.f = Start;
code->y_u.OtapFs.p = pe;
code->y_u.OtapFs.s = Arity;
code->y_u.OtapFs.extra = Extra;
#ifdef YAPOR
INIT_YAMOP_LTT(code, 2);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code = NEXTOP(code, OtapFs);
if (flags & UserCPredFlag)
code->opc = Yap_opcode(_retry_userc);
else
code->opc = Yap_opcode(_retry_c);
code->y_u.OtapFs.f = Cont;
code->y_u.OtapFs.p = pe;
code->y_u.OtapFs.s = Arity;
code->y_u.OtapFs.extra = Extra;
#ifdef YAPOR
INIT_YAMOP_LTT(code, 1);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code = NEXTOP(code, OtapFs);
if (flags & UserCPredFlag)
code->opc = Yap_opcode(_cut_userc);
else
code->opc = Yap_opcode(_cut_c);
code->y_u.OtapFs.f = Cut;
code->y_u.OtapFs.p = pe;
code->y_u.OtapFs.s = Arity;
code->y_u.OtapFs.extra = Extra;
code = NEXTOP(code, OtapFs);
code->opc = Yap_opcode(_Ystop);
code->y_u.l.l = cl->ClCode;
}
}
static void InitStdPreds(void) {
Yap_InitCPreds();
Yap_InitBackCPreds();
BACKUP_MACHINE_REGS();
Yap_InitFlags(false);
Yap_InitPlIO();
#if HAVE_MPE
Yap_InitMPE();
#endif
}
static void InitPredHash(void) {
UInt i;
PredHash = (PredEntry **)Yap_AllocAtomSpace(sizeof(PredEntry **) *
PredHashInitialSize);
PredHashTableSize = PredHashInitialSize;
if (PredHash == NULL) {
Yap_Error(SYSTEM_ERROR_FATAL, MkIntTerm(0),
"allocating initial predicate hash table");
}
for (i = 0; i < PredHashTableSize; ++i) {
PredHash[i] = NULL;
}
INIT_RWLOCK(PredHashRWLock);
}
static void InitEnvInst(yamop start[2], yamop **instp, op_numbers opc,
PredEntry *pred) {
yamop *ipc = start;
/* make it look like the instruction is preceeded by a call instruction */
ipc->opc = Yap_opcode(_call);
ipc->y_u.Osbpp.s = -Signed(RealEnvSize);
ipc->y_u.Osbpp.bmap = NULL;
ipc->y_u.Osbpp.p = pred;
ipc->y_u.Osbpp.p0 = pred;
ipc = NEXTOP(ipc, Osbpp);
ipc->opc = Yap_opcode(opc);
*instp = ipc;
}
static void InitOtaplInst(yamop start[1], OPCODE opc, PredEntry *pe) {
yamop *ipc = start;
/* this is a place holder, it should not really be used */
ipc->opc = Yap_opcode(opc);
ipc->y_u.Otapl.s = 0;
ipc->y_u.Otapl.p = pe;
ipc->y_u.Otapl.d = NULL;
#ifdef YAPOR
INIT_YAMOP_LTT(ipc, 1);
#endif /* YAPOR */
#ifdef TABLING
ipc->y_u.Otapl.te = NULL;
#endif /* TABLING */
}
static void InitDBErasedMarker(void) {
DBErasedMarker = (DBRef)Yap_AllocCodeSpace(sizeof(DBStruct));
Yap_LUClauseSpace += sizeof(DBStruct);
DBErasedMarker->id = FunctorDBRef;
DBErasedMarker->Flags = ErasedMask;
DBErasedMarker->Code = NULL;
DBErasedMarker->DBT.DBRefs = NULL;
DBErasedMarker->Parent = NULL;
}
static void InitLogDBErasedMarker(void) {
LogDBErasedMarker = (LogUpdClause *)Yap_AllocCodeSpace(
sizeof(LogUpdClause) + (UInt)NEXTOP((yamop *)NULL, e));
Yap_LUClauseSpace += sizeof(LogUpdClause) + (UInt)NEXTOP((yamop *)NULL, e);
LogDBErasedMarker->Id = FunctorDBRef;
LogDBErasedMarker->ClFlags = ErasedMask | LogUpdMask;
LogDBErasedMarker->lusl.ClSource = NULL;
LogDBErasedMarker->ClRefCount = 0;
LogDBErasedMarker->ClExt = NULL;
LogDBErasedMarker->ClPrev = NULL;
LogDBErasedMarker->ClNext = NULL;
LogDBErasedMarker->ClSize = (UInt)NEXTOP(((LogUpdClause *)NULL)->ClCode, e);
LogDBErasedMarker->ClCode->opc = Yap_opcode(_op_fail);
INIT_CLREF_COUNT(LogDBErasedMarker);
}
static void InitEmptyWakeups(void) {}
static void InitAtoms(void) {
int i;
AtomHashTableSize = MaxHash;
HashChain =
(AtomHashEntry *)Yap_AllocAtomSpace(sizeof(AtomHashEntry) * MaxHash);
if (HashChain == NULL) {
Yap_Error(SYSTEM_ERROR_FATAL, MkIntTerm(0),
"allocating initial atom table");
}
for (i = 0; i < MaxHash; ++i) {
INIT_RWLOCK(HashChain[i].AERWLock);
HashChain[i].Entry = NIL;
}
NOfAtoms = 0;
#if OLD_STYLE_INITIAL_ATOMS
Yap_LookupAtomWithAddress("**", (AtomEntry *)&(SF_STORE->AtFoundVar));
Yap_ReleaseAtom(AtomFoundVar);
Yap_LookupAtomWithAddress("?", (AtomEntry *)&(SF_STORE->AtFreeTerm));
Yap_ReleaseAtom(AtomFreeTerm);
Yap_LookupAtomWithAddress("[]", (AtomEntry *)&(SF_STORE->AtNil));
Yap_LookupAtomWithAddress(".", (AtomEntry *)&(SF_STORE->AtDot));
#else
SF_STORE->AtFoundVar = Yap_LookupAtom("**");
Yap_ReleaseAtom(AtomFoundVar);
SF_STORE->AtFreeTerm = Yap_LookupAtom("?");
Yap_ReleaseAtom(AtomFreeTerm);
SF_STORE->AtNil = Yap_LookupAtom("[]");
SF_STORE->AtDot = Yap_LookupAtom(".");
#endif
}
static void InitWideAtoms(void) {
int i;
WideAtomHashTableSize = MaxWideHash;
WideHashChain =
(AtomHashEntry *)Yap_AllocAtomSpace(sizeof(AtomHashEntry) * MaxWideHash);
if (WideHashChain == NULL) {
Yap_Error(SYSTEM_ERROR_FATAL, MkIntTerm(0), "allocating wide atom table");
}
for (i = 0; i < MaxWideHash; ++i) {
INIT_RWLOCK(WideHashChain[i].AERWLock);
WideHashChain[i].Entry = NIL;
}
NOfWideAtoms = 0;
}
static void InitInvisibleAtoms(void) {
/* initialize invisible chain */
INVISIBLECHAIN.Entry = NIL;
INIT_RWLOCK(INVISIBLECHAIN.AERWLock);
}
#ifdef YAPOR
void Yap_init_yapor_workers(void) {
CACHE_REGS
int proc;
#ifdef YAPOR_THREADS
return;
#endif /* YAPOR_THREADS */
#ifdef YAPOR_COW
GLOBAL_master_worker = getpid();
if (GLOBAL_number_workers > 1) {
int son;
son = fork();
if (son == -1)
Yap_Error(SYSTEM_ERROR_FATAL, TermNil,
"fork error (Yap_init_yapor_workers)");
if (son > 0) {
/* I am the father, I must stay here and wait for my children to all die
*/
struct sigaction sigact;
sigact.sa_handler = SIG_DFL;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigaction(SIGINT, &sigact, NULL);
pause();
exit(0);
} else
GLOBAL_worker_pid(0) = getpid();
}
#endif /* YAPOR_COW */
for (proc = 1; proc < GLOBAL_number_workers; proc++) {
int son;
son = fork();
if (son == -1)
Yap_Error(SYSTEM_ERROR_FATAL, TermNil,
"fork error (Yap_init_yapor_workers)");
if (son == 0) {
/* new worker */
worker_id = proc;
Yap_remap_yapor_memory();
LOCAL = REMOTE(worker_id);
memcpy(REMOTE(worker_id), REMOTE(0), sizeof(struct worker_local));
InitWorker(worker_id);
break;
} else
GLOBAL_worker_pid(proc) = son;
}
}
#endif /* YAPOR */
#ifdef THREADS
static void InitThreadHandle(int wid) {
REMOTE_ThreadHandle(wid).in_use = FALSE;
REMOTE_ThreadHandle(wid).zombie = FALSE;
REMOTE_ThreadHandle(wid).local_preds = NULL;
#ifdef LOW_LEVEL_TRACER
REMOTE_ThreadHandle(wid).thread_inst_count = 0LL;
#endif
pthread_mutex_init(&(REMOTE_ThreadHandle(wid).tlock), NULL);
pthread_mutex_init(&(REMOTE_ThreadHandle(wid).tlock_status), NULL);
REMOTE_ThreadHandle(wid).tdetach = (CELL)0;
REMOTE_ThreadHandle(wid).cmod = (CELL)0;
{
mbox_t *mboxp = &REMOTE_ThreadHandle(wid).mbox_handle;
pthread_mutex_t *mutexp;
pthread_cond_t *condp;
struct idb_queue *msgsp;
mboxp->name = MkIntTerm(0);
condp = &mboxp->cond;
pthread_cond_init(condp, NULL);
mutexp = &mboxp->mutex;
pthread_mutex_init(mutexp, NULL);
msgsp = &mboxp->msgs;
mboxp->nmsgs = 0;
mboxp->nclients = 0;
mboxp->open = true;
Yap_init_tqueue(msgsp);
}
}
int Yap_InitThread(int new_id) {
struct worker_local *new_s;
if (new_id) {
if (!(new_s =
(struct worker_local *)calloc(sizeof(struct worker_local), 1)))
return FALSE;
Yap_local[new_id] = new_s;
if (!((REGSTORE *)pthread_getspecific(Yap_yaamregs_key))) {
REGSTORE *rs = (REGSTORE *)calloc(sizeof(REGSTORE), 1);
pthread_setspecific(Yap_yaamregs_key, (const void *)rs);
REMOTE_ThreadHandle(new_id).default_yaam_regs = rs;
REMOTE_ThreadHandle(new_id).current_yaam_regs = rs;
rs->worker_id_ = new_id;
rs->worker_local_ = REMOTE(new_id);
}
}
InitWorker(new_id);
return TRUE;
}
#endif
static void InitScratchPad(int wid) {
REMOTE_ScratchPad(wid).ptr = NULL;
REMOTE_ScratchPad(wid).sz = SCRATCH_START_SIZE;
REMOTE_ScratchPad(wid).msz = SCRATCH_START_SIZE;
}
static CELL *InitHandles(int wid) {
size_t initial_slots = 1024;
CELL *handles;
REMOTE_CurSlot(wid) = 1;
REMOTE_NSlots(wid) = initial_slots;
handles = calloc(initial_slots, sizeof(CELL));
if (handles == NULL) {
Yap_Error(SYSTEM_ERROR_INTERNAL, 0 /* TermNil */,
"No space for handles at " __FILE__ " : %d", __LINE__);
}
RESET_VARIABLE(handles);
return handles;
}
void Yap_CloseScratchPad(void) {
CACHE_REGS
Yap_FreeCodeSpace(LOCAL_ScratchPad.ptr);
LOCAL_ScratchPad.sz = SCRATCH_START_SIZE;
LOCAL_ScratchPad.msz = SCRATCH_START_SIZE;
}
#include "iglobals.h"
#include "ilocals.h"
#if defined(YAPOR_COPY) || defined(YAPOR_COW) || defined(YAPOR_SBA)
struct global_data *Yap_global;
long Yap_worker_area_size;
#endif
#if defined(THREADS)
struct worker_local *Yap_local[MAX_THREADS];
#elif defined(YAPOR)
struct worker_local *Yap_local;
#else /* !THREADS && !YAPOR */
struct worker_local Yap_local;
#endif
static void InitCodes(void) {
CACHE_REGS
#if THREADS
int wid;
for (wid = 1; wid < MAX_THREADS; wid++) {
Yap_local[wid] = NULL;
}
#endif
#include "ihstruct.h"
#if THREADS
Yap_InitThread(0);
#endif /* THREADS */
InitGlobal();
#if !THREADS
InitWorker(0);
#endif /* THREADS */
Yap_InitFirstWorkerThreadHandle();
/* make sure no one else can use these two atoms */
LOCAL_SourceModule = CurrentModule = 0;
Yap_ReleaseAtom(AtomOfTerm(TermRefoundVar));
/* flags require atom table done, but must be done as soon as possible,
definitely before any predicate initialization */
// Yap_InitFlags(); moved to HEAPFIELDS
/* make sure we have undefp defined */
/* predicates can only be defined after this point */
{
/* make sure we know about the module predicate */
PredEntry *modp = RepPredProp(PredPropByFunc(FunctorModule, PROLOG_MODULE));
modp->PredFlags |= MetaPredFlag;
}
#ifdef YAPOR
Yap_heap_regs->getwork_code->y_u.Otapl.p =
RepPredProp(PredPropByAtom(AtomGetwork, PROLOG_MODULE));
Yap_heap_regs->getwork_seq_code->y_u.Otapl.p =
RepPredProp(PredPropByAtom(AtomGetworkSeq, PROLOG_MODULE));
#endif /* YAPOR */
}
static void InitVersion(void) {
Yap_PutValue(AtomVersionNumber, MkAtomTerm(Yap_LookupAtom(YAP_FULL_VERSION)));
}
void Yap_InitWorkspace(UInt Heap, UInt Stack, UInt Trail, UInt Atts,
UInt max_table_size, int n_workers, int sch_loop,
int delay_load) {
CACHE_REGS
/* initialize system stuff */
#if PUSH_REGS
#ifdef THREADS
if (!(Yap_local[0] =
(struct worker_local *)calloc(sizeof(struct worker_local), 1)))
return;
pthread_key_create(&Yap_yaamregs_key, NULL);
pthread_setspecific(Yap_yaamregs_key, (const void *)&Yap_standard_regs);
GLOBAL_master_thread = pthread_self();
#else
/* In this case we need to initialize the abstract registers */
Yap_regp = &Yap_standard_regs;
/* the emulator will eventually copy them to its own local
register array, but for now they exist */
#endif
#endif /* PUSH_REGS */
#ifdef THREADS
Yap_regp = ((REGSTORE *)pthread_getspecific(Yap_yaamregs_key));
LOCAL = REMOTE(0);
#endif /* THREADS */
#if defined(YAPOR_COPY) || defined(YAPOR_COW) || defined(YAPOR_SBA)
LOCAL = REMOTE(0);
#endif /* YAPOR_COPY || YAPOR_COW || YAPOR_SBA */
if (Heap < MinHeapSpace)
Heap = MinHeapSpace;
Heap = AdjustPageSize(Heap * K);
Heap /= (K);
/* sanity checking for data areas */
if (Trail < MinTrailSpace)
Trail = MinTrailSpace;
Trail = AdjustPageSize(Trail * K);
Trail /= (K);
if (Stack < MinStackSpace)
Stack = MinStackSpace;
Stack = AdjustPageSize(Stack * K);
Stack /= (K);
if (!Atts)
Atts = 2048 * sizeof(CELL);
else
Atts = AdjustPageSize(Atts * K);
Atts /= (K);
#if defined(THREADS) || defined(YAPOR)
worker_id = 0;
#endif /* YAPOR || THREADS */
#ifdef YAPOR
if (n_workers > MAX_WORKERS)
Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "excessive number of workers");
#ifdef YAPOR_COPY
INFORMATION_MESSAGE("YapOr: copy model with %d worker%s", n_workers,
n_workers == 1 ? "" : "s");
#elif YAPOR_COW
INFORMATION_MESSAGE("YapOr: acow model with %d worker%s", n_workers,
n_workers == 1 ? "" : "s");
#elif YAPOR_SBA
INFORMATION_MESSAGE("YapOr: sba model with %d worker%s", n_workers,
n_workers == 1 ? "" : "s");
#elif YAPOR_THREADS
INFORMATION_MESSAGE("YapOr: threads model with %d worker%s", n_workers,
n_workers == 1 ? "" : "s");
#endif /* YAPOR_COPY - YAPOR_COW - YAPOR_SBA - YAPOR_THREADS */
#endif /* YAPOR */
#if defined(YAPOR_COPY) || defined(YAPOR_COW) || defined(YAPOR_SBA)
Yap_init_yapor_stacks_memory(Trail, Heap, Stack + Atts, n_workers);
#else
Yap_InitMemory(Trail, Heap, Stack + Atts);
#endif
#if defined(YAPOR) || defined(TABLING)
Yap_init_global_optyap_data(max_table_size, n_workers, sch_loop, delay_load);
#endif /* YAPOR || TABLING */
Yap_AttsSize = Atts;
/* InitAbsmi must be done before InitCodes */
/* This must be done before initializing predicates */
#ifdef MPW
Yap_InitAbsmi(REGS, FunctorList);
#else
Yap_InitAbsmi();
#endif
InitCodes();
InitOps();
InitDebug();
InitVersion();
#if THREADS
/* make sure we use the correct value of regcache */
regcache = ((REGSTORE *)pthread_getspecific(Yap_yaamregs_key));
#endif
#if USE_SYSTEM_MALLOC
if (Trail < MinTrailSpace)
Trail = MinTrailSpace;
if (Stack < MinStackSpace)
Stack = MinStackSpace;
if (!(LOCAL_GlobalBase = (ADDR)malloc((Trail + Stack) * 1024))) {
Yap_Error(RESOURCE_ERROR_HEAP, 0,
"could not allocate stack space for main thread");
Yap_exit(1);
}
#if THREADS
/* don't forget this is a thread */
LOCAL_ThreadHandle.stack_address = LOCAL_GlobalBase;
LOCAL_ThreadHandle.tsize = Trail;
LOCAL_ThreadHandle.ssize = Stack;
#endif
#endif
GLOBAL_AllowGlobalExpansion = TRUE;
GLOBAL_AllowLocalExpansion = TRUE;
GLOBAL_AllowTrailExpansion = TRUE;
Yap_InitExStacks(0, Trail, Stack);
Yap_InitYaamRegs(0);
InitStdPreds();
/* make sure tmp area is available */
{ Yap_ReleasePreAllocCodeSpace(Yap_PreAllocCodeSpace()); }
}
int Yap_HaltRegisterHook(HaltHookFunc f, void *env) {
struct halt_hook *h;
if (!(h = (struct halt_hook *)Yap_AllocCodeSpace(sizeof(struct halt_hook))))
return FALSE;
h->environment = env;
h->hook = f;
LOCK(GLOBAL_BGL);
h->next = GLOBAL_HaltHooks;
GLOBAL_HaltHooks = h;
UNLOCK(GLOBAL_BGL);
return TRUE;
}
static void run_halt_hooks(int code) {
struct halt_hook *hooke = GLOBAL_HaltHooks;
while (hooke) {
hooke->hook(code, hooke->environment);
hooke = hooke->next;
}
}
void Yap_exit(int value) {
CACHE_REGS
void closeFiles(int all);
#if defined(YAPOR_COPY) || defined(YAPOR_COW) || defined(YAPOR_SBA)
Yap_unmap_yapor_memory();
#endif /* YAPOR_COPY || YAPOR_COW || YAPOR_SBA */
if (!(LOCAL_PrologMode & BootMode)) {
#ifdef LOW_PROF
remove("PROFPREDS");
remove("PROFILING");
#endif
run_halt_hooks(value);
Yap_ShutdownLoadForeign();
}
Yap_CloseStreams(false);
exit(value);
}
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