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yap-6.3/C/init.c
2002-02-01 15:48:17 +00:00

1208 lines
34 KiB
C

/*************************************************************************
* *
* 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
*
*/
#include "Yap.h"
#include "yapio.h"
#include "clause.h"
#ifdef LOW_LEVEL_TRACER
#include "tracer.h"
#endif
#ifdef YAPOR
#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
#ifdef DEBUG
#ifdef MACC
STATIC_PROTO(void InTTYLine, (char *));
#endif
#endif
STATIC_PROTO(void SetOp, (int, int, char *));
STATIC_PROTO(void InitOps, (void));
STATIC_PROTO(void InitDebug, (void));
STATIC_PROTO(void CleanBack, (PredEntry *, CPredicate, CPredicate));
STATIC_PROTO(void InitStdPreds,(void));
STATIC_PROTO(void InitFlags, (void));
STATIC_PROTO(void InitCodes, (void));
STATIC_PROTO(void InitVersion, (void));
STD_PROTO(void InitModules, (void));
STD_PROTO(void exit, (int));
#ifdef DEBUG
char Option[20];
#endif
/************** YAP PROLOG GLOBAL VARIABLES *************************/
/************* variables related to memory allocation ***************/
ADDR HeapBase, LocalBase, GlobalBase, TrailBase, TrailTop, ForeignCodeBase, ForeignCodeTop, ForeignCodeMax;
/* Functor FunctorDouble, FunctorLongInt, FunctorDBRef; */
/************ variables concerned with Error Handling *************/
char *ErrorMessage; /* used to pass error messages */
Term Error_Term; /* used to pass error terms */
yap_error_number Error_TYPE; /* used to pass the error */
/********* flags for comunication with prolog system predicates *****/
int Parm[10];
#ifdef MPWSHELL
/********** informing if we are in the MPW shell ********************/
int mpwshell = FALSE;
#endif
#ifdef EMACS
int emacs_mode = FALSE;
char emacs_tmp[256], emacs_tmp2[256];
#endif
#if HAVE_SIGNAL
int snoozing = FALSE;
#endif
/************ variable concerned with version number *****************/
char version_number[] = YAP_VERSION;
/******************** compiler information ***************************/
int optimizer_on = TRUE;
/******************* the line for the current parse **********************/
int StartLine = 1;
int StartCh = 0;
int CurFileNo = 0;
int compile_mode = 0;
/******************* intermediate buffers **********************/
char FileNameBuf[YAP_FILENAME_MAX], FileNameBuf2[YAP_FILENAME_MAX];
/********* Prolog State ********************************************/
prolog_exec_mode PrologMode = BootMode;
int CritLocks = 0;
#if PUSH_REGS
REGSTORE standard_regs;
REGSTORE *regp;
#else
REGSTORE REGS;
#endif
/************** Access to yap initial arguments ***************************/
char **yap_args;
int yap_argc;
/************** Extensions to Terms ***************************************/
#ifdef COROUTINING
/* array with the ops for your favourite extensions */
ext_op attas[attvars_ext+1];
#endif
/************** Debugger support ***************************************/
/*
PREG just before we enter $spy. We use that to find out the clause which
was calling the debugged goal.
*/
yamop *P_before_spy;
#ifdef DEBUG
int output_msg = FALSE;
#endif
/************ variables concerned with Error Handling *************/
sigjmp_buf RestartEnv; /* used to restart after an abort execution */
/************ table of C-Predicates *************/
CPredicate c_predicates[MAX_C_PREDS];
cmp_entry cmp_funcs[MAX_CMP_FUNCS];
/************** declarations local to init.c ************************/
static char *optypes[] =
{"", "xfx", "xfy", "yfx", "xf", "yf", "fx", "fy"};
#define xfx 1
#define xfy 2
#define yfx 3
#define xf 4
#define yf 5
#define fx 6
#define fy 7
#define Nill NULL
#ifdef DEBUG
#define LOGFILE "logfile"
/* static */ YP_FILE *logfile;
int
DebugPutc(int sno, int ch)
{
if (Option['l' - 96])
(void) putc(ch, logfile);
return (YP_putc(ch, YP_stderr));
}
static char my_line[200] = {0};
static char *lp = my_line;
static YP_File curfile;
#ifdef MACC
static void
InTTYLine(char *line)
{
char *p = line;
char ch;
while ((ch = InKey()) != '\n' && ch != '\r')
if (ch == 8) {
if (line < p)
BackupTTY(*--p);
} else
TTYChar(*p++ = ch);
TTYChar('\n');
*p = 0;
}
#endif
void
DebugSetIFile(char *fname)
{
if (curfile)
YP_fclose(curfile);
curfile = YP_fopen(fname, "r");
if (curfile == Nill) {
curfile = stdin;
YP_fprintf(YP_stderr,"[ Warning: can not open %s for input]\n", fname);
}
}
void
DebugEndline()
{
*lp = 0;
}
static int eolflg = 1;
int
DebugGetc()
{
int ch;
if (eolflg) {
if (curfile != Nill) {
if (YP_fgets(my_line, 200, curfile) == 0)
curfile = Nill;
}
if (curfile == Nill)
YP_fgets(my_line, 200, stdin);
eolflg = 0;
lp = my_line;
}
if ((ch = *lp++) == 0)
ch = '\n', eolflg = 1;
if (Option['l' - 96])
putc(ch, logfile);
return (ch);
}
#endif
void
UserCPredicate(char *name, CPredicate def, unsigned int arity)
{
InitCPred(name, arity, def, UserCPredFlag);
}
void
UserBackCPredicate(char *name, CPredicate init, CPredicate cont,
unsigned int arity, int extra)
{
InitCPredBack(name, arity, extra, init, cont, UserCPredFlag);
}
int IsOpType(char *type)
{
int i;
for (i = 1; i <= 7; ++i)
if (strcmp(type, optypes[i]) == 0)
break;
return (i <= 7);
}
int
OpDec(int p, char *type, Atom a)
{
int i;
AtomEntry *ae = RepAtom(a);
OpEntry *info;
for (i = 1; i <= 7; ++i)
if (strcmp(type, optypes[i]) == 0)
break;
if (i > 7) {
Error(DOMAIN_ERROR_OPERATOR_SPECIFIER,MkAtomTerm(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 = RepOpProp(GetAPropHavingLock(ae, OpProperty));
if (EndOfPAEntr(info)) {
info = (OpEntry *) AllocAtomSpace(sizeof(OpEntry));
info->KindOfPE = Ord(OpProperty);
info->NextOfPE = RepAtom(a)->PropsOfAE;
RepAtom(a)->PropsOfAE = AbsOpProp(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 (info->Posfix != 0) /* there is a posfix operator */ {
/* ISO dictates */
WRITE_UNLOCK(info->OpRWLock);
Error(PERMISSION_ERROR_CREATE_OPERATOR,MkAtomTerm(a),"op/3");
return(FALSE);
}
info->Infix = p;
} else if (i <= 5) {
if (info->Infix != 0) /* there is an infix operator */ {
/* ISO dictates */
WRITE_UNLOCK(info->OpRWLock);
Error(PERMISSION_ERROR_CREATE_OPERATOR,MkAtomTerm(a),"op/3");
return(FALSE);
}
info->Posfix = p;
} else {
info->Prefix = p;
}
WRITE_UNLOCK(info->OpRWLock);
return (TRUE);
}
static void
SetOp(int p, int type, char *at)
{
#ifdef DEBUG
if (Option[5])
YP_fprintf(YP_stderr,"[setop %d %s %s]\n", p, optypes[type], at);
#endif
OpDec(p, optypes[type], LookupAtom(at));
}
/* Gets the info about an operator in a prop */
Atom
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 (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},
{"initialization", fx, 1150},
{"mode", fx, 1150},
{"public", fx, 1150},
{"multifile", fx, 1150},
{"meta_predicate", fx, 1150},
{"discontiguous", fx, 1150},
#ifdef YAPOR
{"sequential", fx, 1150},
#endif /* YAPOR */
#ifdef TABLING
{"table", fx, 1150},
#endif /* TABLING */
{";", xfy, 1100},
{"|", xfy, 1100},
/* {";", yf, 1100}, not allowed in ISO */
{"->", 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},
{":", xfy, 600},
{"+", yfx, 500},
{"-", yfx, 500},
{"/\\", yfx, 500},
{"\\/", yfx, 500},
{"#", yfx, 500},
{"+", fx, 500},
{"-", fx, 500},
{"\\", fx, 500},
{"*", yfx, 400},
{"/", yfx, 400},
{"<<", yfx, 400},
{">>", yfx, 400},
{"mod", yfx, 400},
{"rem", yfx, 400},
{"//", 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);
}
static void
InitDebug(void)
{
Atom At;
#ifdef DEBUG
int i;
for (i = 1; i < 20; ++i)
Option[i] = 0;
if (output_msg) {
char ch;
opcode(_Ystop);
fprintf(stderr,"absmi address:%p\n", FunAdr(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\n");
while ((ch = YP_putchar(YP_getchar())) != '\n')
if (ch >= 'a' && ch <= 'z')
Option[ch - 'a' + 1] = 1;
if (Option['l' - 96]) {
logfile = fopen(LOGFILE, "w");
if (logfile == Nill) {
fprintf(stderr,"can not open %s\n", LOGFILE);
getchar();
exit(0);
}
fprintf(stderr,"logging session to file 'logfile'\n");
#ifdef MAC
SetTextFile(LOGFILE);
lp = my_line;
curfile = Nill;
#endif
}
}
#endif
/* Set at full leash */
At = LookupAtom("$leash");
PutValue(At, MkIntTerm(15));
}
void
InitCPred(char *Name, int Arity, CPredicate code, int flags)
{
Atom atom = LookupAtom(Name);
PredEntry *pe;
yamop *p_code = (yamop *)AllocCodeSpace((CELL)NEXTOP(NEXTOP(((yamop *)NULL),sla),e));
if (Arity)
pe = RepPredProp(PredPropByFunc(MkFunctor(atom, Arity),CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom,CurrentModule));
pe->PredFlags = flags | StandardPredFlag | CPredFlag;
p_code->u.sla.l = pe->TrueCodeOfPred = (CODEADDR) code;
pe->CodeOfPred = pe->FirstClause = pe->LastClause = (CODEADDR) p_code;
if (flags & UserCPredFlag)
p_code->opc = pe->OpcodeOfPred = opcode(_call_usercpred);
else
p_code->opc = pe->OpcodeOfPred = opcode(_call_cpred);
p_code->u.sla.l2 = (CELL)NIL;
p_code->u.sla.s = -Signed(RealEnvSize);
p_code->u.sla.p = (CODEADDR)pe;
p_code = NEXTOP(p_code,sla);
p_code->opc = opcode(_procceed);
{
Term mod = CurrentModule;
pe->ModuleOfPred = mod;
}
if (!(flags & UserCPredFlag)) {
c_predicates[NUMBER_OF_CPREDS] = code;
pe->StateOfPred = NUMBER_OF_CPREDS;
NUMBER_OF_CPREDS++;
}
}
void
InitCmpPred(char *Name, int Arity, CmpPredicate cmp_code, CPredicate code, int flags)
{
Atom atom = LookupAtom(Name);
PredEntry *pe;
yamop *p_code = (yamop *)AllocCodeSpace((CELL)NEXTOP(NEXTOP(((yamop *)NULL),sla),e));
if (Arity)
pe = RepPredProp(PredPropByFunc(MkFunctor(atom, Arity),CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom,CurrentModule));
pe->PredFlags = flags | StandardPredFlag | CPredFlag;
p_code->u.sla.l = pe->TrueCodeOfPred = (CODEADDR) code;
pe->CodeOfPred = pe->FirstClause = pe->LastClause = (CODEADDR) p_code;
pe->ModuleOfPred = CurrentModule;
p_code->opc = pe->OpcodeOfPred = opcode(_call_cpred);
p_code->u.sla.l2 = (CELL)NIL;
p_code->u.sla.s = -Signed(RealEnvSize);
p_code->u.sla.p = (CODEADDR)pe;
p_code = NEXTOP(p_code,sla);
p_code->opc = opcode(_procceed);
c_predicates[NUMBER_OF_CPREDS] = code;
pe->StateOfPred = NUMBER_OF_CPREDS;
NUMBER_OF_CPREDS++;
pe->TrueCodeOfPred = (CODEADDR) cmp_code;
cmp_funcs[NUMBER_OF_CMPFUNCS].p = pe;
cmp_funcs[NUMBER_OF_CMPFUNCS].f = cmp_code;
NUMBER_OF_CMPFUNCS++;
}
void
InitAsmPred(char *Name, int Arity, int code, CPredicate def, int flags)
{
Atom atom = LookupAtom(Name);
PredEntry *pe;
if (Arity)
pe = RepPredProp(PredPropByFunc(MkFunctor(atom, Arity),CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom,CurrentModule));
pe->PredFlags = flags | StandardPredFlag | (code);
if (def != NULL) {
yamop *p_code = (yamop *)AllocCodeSpace((CELL)NEXTOP(NEXTOP(((yamop *)NULL),sla),e));
p_code->u.sla.l = pe->TrueCodeOfPred = (CODEADDR) def;
pe->CodeOfPred = pe->FirstClause = pe->LastClause = (CODEADDR) p_code;
pe->ModuleOfPred = CurrentModule;
p_code->opc = pe->OpcodeOfPred = opcode(_call_cpred);
p_code->u.sla.l2 = (CELL)NIL;
p_code->u.sla.s = -Signed(RealEnvSize);
p_code->u.sla.p = (CODEADDR)pe;
p_code = NEXTOP(p_code,sla);
p_code->opc = opcode(_procceed);
c_predicates[NUMBER_OF_CPREDS] = def;
pe->StateOfPred = NUMBER_OF_CPREDS;
NUMBER_OF_CPREDS++;
} else {
pe->FirstClause = pe->LastClause = NIL;
pe->OpcodeOfPred = opcode(_undef_p);
pe->TrueCodeOfPred = pe->CodeOfPred =
(CODEADDR)(&(pe->OpcodeOfPred));
}
}
static void
CleanBack(PredEntry *pe, CPredicate Start, CPredicate Cont)
{
yamop *code;
if (pe->FirstClause != pe->LastClause || pe->TrueCodeOfPred !=
pe->FirstClause || pe->CodeOfPred != pe->FirstClause) {
Error(SYSTEM_ERROR,TermNil,
"initiating a C Pred with backtracking");
return;
}
code = (yamop *)(pe->FirstClause);
if (pe->PredFlags & UserCPredFlag)
code->opc = opcode(_try_userc);
else
code->opc = opcode(_try_c);
#ifdef YAPOR
INIT_YAMOP_LTT(code, 2);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
c_predicates[pe->StateOfPred] = Start;
code->u.lds.d = (CODEADDR) Start;
code = NEXTOP(code,lds);
if (pe->PredFlags & UserCPredFlag)
code->opc = opcode(_retry_userc);
else
code->opc = opcode(_retry_c);
#ifdef YAPOR
INIT_YAMOP_LTT(code, 1);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
c_predicates[pe->StateOfPred+1] = Cont;
code->u.lds.d = (CODEADDR) Cont;
}
void
InitCPredBack(char *Name, int Arity, int Extra, CPredicate Start, CPredicate Cont, int flags)
{
PredEntry *pe;
Atom atom = LookupAtom(Name);
if (Arity)
pe = RepPredProp(PredPropByFunc(MkFunctor(atom, Arity),CurrentModule));
else
pe = RepPredProp(PredPropByAtom(atom,CurrentModule));
if (pe->FirstClause != NIL)
CleanBack(pe, Start, Cont);
else {
Clause *cl;
yamop *code = ((Clause *)NIL)->ClCode;
pe->PredFlags = CompiledPredFlag | StandardPredFlag;
#ifdef YAPOR
pe->PredFlags |= SequentialPredFlag;
#endif /* YAPOR */
cl = (Clause
*)AllocCodeSpace((CELL)NEXTOP(NEXTOP(NEXTOP(code,lds),lds),e));
if (cl == NIL) {
Error(SYSTEM_ERROR,TermNil,"No Heap Space in InitCPredBack");
return;
}
cl->u.ClValue = 0;
cl->ClFlags = 0;
cl->Owner = LookupAtom("user");
code = cl->ClCode;
pe->TrueCodeOfPred = pe->CodeOfPred =
pe->FirstClause = pe->LastClause = (CODEADDR)code;
if (flags & UserCPredFlag)
pe->OpcodeOfPred = code->opc = opcode(_try_userc);
else
pe->OpcodeOfPred = code->opc = opcode(_try_c);
code->u.lds.d = (CODEADDR) Start;
pe->StateOfPred = NUMBER_OF_CPREDS;
c_predicates[NUMBER_OF_CPREDS] = Start;
NUMBER_OF_CPREDS++;
code->u.lds.p = (CODEADDR) pe;
code->u.lds.s = Arity;
code->u.lds.extra = Extra;
#ifdef YAPOR
INIT_YAMOP_LTT(code, 2);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code = NEXTOP(code,lds);
if (flags & UserCPredFlag)
code->opc = opcode(_retry_userc);
else
code->opc = opcode(_retry_c);
code->u.lds.d = (CODEADDR) Cont;
c_predicates[NUMBER_OF_CPREDS] = Cont;
NUMBER_OF_CPREDS++;
code->u.lds.p = (CODEADDR) pe;
code->u.lds.s = Arity;
code->u.lds.extra = Extra;
#ifdef YAPOR
INIT_YAMOP_LTT(code, 1);
PUT_YAMOP_SEQ(code);
#endif /* YAPOR */
code = NEXTOP(code,lds);
code->opc = opcode(_Ystop);
}
}
static void
InitStdPreds(void)
{
InitCPreds();
InitBackCPreds();
}
static void
InitFlags(void)
{
/* note that heap_regs must be set first */
#if USE_GMP
yap_flags[YAP_INT_BOUNDED_FLAG] = 0;
#else
yap_flags[YAP_INT_BOUNDED_FLAG] = 1;
#endif
yap_flags[MAX_ARITY_FLAG] = -1;
yap_flags[INTEGER_ROUNDING_FLAG] = 0;
yap_flags[YAP_MAX_INTEGER_FLAG] = (Int)(~((CELL)1 << (sizeof(Int)*8-1)));
yap_flags[YAP_MIN_INTEGER_FLAG] = (Int)(((CELL)1 << (sizeof(Int)*8-1)));
yap_flags[CHAR_CONVERSION_FLAG] = 1;
yap_flags[YAP_DOUBLE_QUOTES_FLAG] = 1;
yap_flags[YAP_TO_CHARS_FLAG] = QUINTUS_TO_CHARS;
yap_flags[LANGUAGE_MODE_FLAG] = 0;
yap_flags[STRICT_ISO_FLAG] = FALSE;
yap_flags[SPY_CREEP_FLAG] = 0;
yap_flags[SOURCE_MODE_FLAG] = FALSE;
yap_flags[CHARACTER_ESCAPE_FLAG] = ISO_CHARACTER_ESCAPES;
yap_flags[WRITE_QUOTED_STRING_FLAG] = FALSE;
#if (defined(YAPOR) || defined(THREADS)) && PUREe_YAPOR
yap_flags[ALLOW_ASSERTING_STATIC_FLAG] = FALSE;
#else
yap_flags[ALLOW_ASSERTING_STATIC_FLAG] = TRUE;
#endif
}
static void
InitCodes(void)
{
Atom
AtomAltNot,
#ifdef COROUTINING
AtomArrayAccess,
#endif
AtomArrow,
AtomBraces,
AtomEq,
AtomGVar,
AtomNot,
AtomQuery,
AtomSemic,
AtomSpy,
AtomStream,
AtomStreamPos,
AtomVar;
Functor
FunctorThrow;
#ifdef YAPOR
heap_regs->seq_def = TRUE;
heap_regs->getworkfirsttimecode.opc = opcode(_getwork_first_time);
heap_regs->getworkcode.opc = opcode(_getwork);
heap_regs->getworkcode.u.ld.p = (CODEADDR)RepPredProp(PredPropByAtom(LookupAtom("$getwork"), 0));
INIT_YAMOP_LTT(&(heap_regs->getworkcode), 0);
heap_regs->getworkcode_seq.opc = opcode(_getwork_seq);
INIT_YAMOP_LTT(&(heap_regs->getworkcode_seq), 0);
heap_regs->getworkcode_seq.u.ld.p = (CODEADDR)RepPredProp(PredPropByAtom(LookupAtom("$getwork_seq"), 0));
#endif /* YAPOR */
#ifdef TABLING
heap_regs->tablecompletioncode.opc = opcode(_table_completion);
heap_regs->tableanswerresolutioncode.opc = opcode(_table_answer_resolution);
#ifdef YAPOR
INIT_YAMOP_LTT(&(heap_regs->tablecompletioncode), 0);
INIT_YAMOP_LTT(&(heap_regs->tableanswerresolutioncode), 0);
#endif /* YAPOR */
#endif /* TABLING */
heap_regs->failcode = opcode(_op_fail);
heap_regs->failcode_1 = opcode(_op_fail);
heap_regs->failcode_2 = opcode(_op_fail);
heap_regs->failcode_3 = opcode(_op_fail);
heap_regs->failcode_4 = opcode(_op_fail);
heap_regs->failcode_5 = opcode(_op_fail);
heap_regs->failcode_6 = opcode(_op_fail);
heap_regs->trustfailcode = opcode(_trust_fail);
heap_regs->env_for_yes_code.op = opcode(_call);
heap_regs->env_for_yes_code.s = -Signed(RealEnvSize);
heap_regs->env_for_yes_code.l = NULL;
heap_regs->env_for_yes_code.l2 = NULL;
heap_regs->yescode = opcode(_Ystop);
heap_regs->undef_op = opcode(_undef_p);
heap_regs->index_op = opcode(_index_pred);
#ifdef YAPOR
heap_regs->nocode.opc = opcode(_Nstop);
INIT_YAMOP_LTT(&(heap_regs->nocode), 1);
#else
heap_regs->nocode = opcode(_Nstop);
#endif /* YAPOR */
((yamop *)(&heap_regs->rtrycode))->opc = opcode(_retry_and_mark);
((yamop *)(&heap_regs->rtrycode))->u.ld.s = 0;
((yamop *)(&heap_regs->rtrycode))->u.ld.d = NIL;
#ifdef YAPOR
INIT_YAMOP_LTT(&(heap_regs->rtrycode), 1);
#endif /* YAPOR */
#if defined(YAPOR) || defined(THREADS)
INIT_LOCK(heap_regs->free_blocks_lock);
INIT_LOCK(heap_regs->heap_used_lock);
INIT_LOCK(heap_regs->heap_top_lock);
INIT_LOCK(heap_regs->dead_clauses_lock);
#endif /* YAPOR */
heap_regs->clausecode.arity = 0;
heap_regs->clausecode.clause = NIL;
heap_regs->clausecode.func = NIL;
heap_regs->invisiblechain.Entry = NIL;
INIT_RWLOCK(heap_regs->invisiblechain.AERWLock);
heap_regs->consultlow = (consult_obj *)AllocCodeSpace(sizeof(consult_obj)*InitialConsultCapacity);
if (heap_regs->consultlow == NIL) {
Error(SYSTEM_ERROR,TermNil,"No Heap Space in InitCodes");
return;
}
heap_regs->consultcapacity = InitialConsultCapacity;
heap_regs->profiling = FALSE;
heap_regs->update_mode = 0;
heap_regs->consultbase = heap_regs->consultsp =
heap_regs->consultlow + heap_regs->consultcapacity;
heap_regs->maxdepth = 0;
heap_regs->maxlist = 0;
heap_regs->atprompt = 0;
#ifdef COROUTINING
heap_regs->num_of_atts = 0; /* initially no attributes have been defined */
#endif
/* system boots in compile mode */
heap_regs->static_predicates_marked = TRUE;
/* use Quintus compatible atom_chars and number_chars, not ISO compatible */
heap_regs->static_predicates_marked = FALSE;
heap_regs->int_keys_size = INT_KEYS_DEFAULT_SIZE;
heap_regs->int_keys_timestamp = 0;
heap_regs->IntKeys = NULL;
heap_regs->int_bb_keys_size = INT_KEYS_DEFAULT_SIZE;
heap_regs->IntBBKeys = NULL;
heap_regs->char_conversion_table = NULL;
heap_regs->char_conversion_table2 = NULL;
heap_regs->number_of_cpreds = 0;
heap_regs->number_of_cmpfuncs = 0;
heap_regs->no_of_modules = 1;
heap_regs->primitives_module = 0;
heap_regs->user_module = 1;
heap_regs->db_queues = NULL;
heap_regs->db_queues_cache = NULL;
heap_regs->atom_abol = LookupAtom("$abol");
AtomAltNot = LookupAtom("not");
heap_regs->atom_append = LookupAtom ("append");
heap_regs->atom_array = LookupAtom("$array");
#ifdef COROUTINING
AtomArrayAccess = LookupAtom("$array_arg");
#endif
AtomArrow = LookupAtom("->");
heap_regs->atom_assert = LookupAtom(":-");
heap_regs->atom_alarm = LookupAtom("$alarm");
#if HAVE_SIGACTION
heap_regs->atom_sig_pending = LookupAtom("$sig_pending");
#endif
AtomBraces = LookupAtom("{}");
heap_regs->atom_b = LookupAtom("$last_choice_pt");
heap_regs->atom_break = LookupAtom("$break");
heap_regs->atom_call = LookupAtom("call");
heap_regs->atom_catch = LookupAtom("$catch");
heap_regs->atom_comma = LookupAtom(",");
heap_regs->atom_cpu_time = LookupAtom("cputime");
heap_regs->atom_csult = LookupAtom("$csult");
heap_regs->atom_cut = LookupAtom("!");
heap_regs->atom_cut_by = LookupAtom("$cut_by");
#ifdef EUROTRA
#ifdef SFUNC
heap_regs->atom_dollar_undef = MkAtomTerm(LookupAtom("$undef"));
#endif
#endif
heap_regs->atom_e = LookupAtom("e");
heap_regs->atom_e_q = LookupAtom("=");
heap_regs->atom_eof = LookupAtom ("end_of_file");
AtomEq = LookupAtom("=");
#ifdef EUROTRA
heap_regs->atom_f_b = LookupAtom("fb");
#endif
heap_regs->atom_fail = LookupAtom("fail");
heap_regs->atom_false = LookupAtom("false");
heap_regs->atom_fast = LookupAtom("$fast");
heap_regs->atom_g_t = LookupAtom(">");
heap_regs->atom_gc = LookupAtom("$gc");
heap_regs->atom_gc_margin = LookupAtom("$gc_margin");
heap_regs->atom_gc_trace = LookupAtom("$gc_trace");
heap_regs->atom_gc_verbose = LookupAtom("$gc_verbose");
heap_regs->atom_gc_very_verbose = LookupAtom("$gc_very_verbose");
AtomGVar = LookupAtom("var");
heap_regs->atom_global = LookupAtom("global_sp");
heap_regs->atom_heap_used = LookupAtom("heapused");
heap_regs->atom_index = LookupAtom("$doindex");
heap_regs->atom_inf = LookupAtom("inf");
heap_regs->atom_l_t = LookupAtom("<");
heap_regs->atom_local = LookupAtom("local_sp");
heap_regs->atom_meta_call = LookupAtom("$call");
heap_regs->atom_minus = LookupAtom("-");
heap_regs->atom_nan = LookupAtom("nan");
AtomNot = LookupAtom("\\+");
heap_regs->atom_otherwise = LookupAtom("otherwise");
heap_regs->atom_pi = LookupAtom("pi");
heap_regs->atom_plus = LookupAtom("+");
heap_regs->atom_portray = LookupAtom("$portray");
heap_regs->atom_profile = LookupAtom("$profile");
AtomQuery = LookupAtom("?-");
heap_regs->atom_random = LookupAtom("random");
heap_regs->atom_read = LookupAtom("read");
heap_regs->atom_repeat = LookupAtom("repeat");
heap_regs->atom_restore_regs = LookupAtom("$restore_regs");
AtomSemic = LookupAtom(";");
heap_regs->atom_stack_free = LookupAtom("stackfree");
AtomStream = LookupAtom ("$stream");
AtomStreamPos = LookupAtom ("$stream_position");
heap_regs->atom_true = LookupAtom("true");
AtomSpy = LookupAtom("$spy");
heap_regs->atom_user = LookupAtom ("user");
heap_regs->atom_usr_err = LookupAtom ("user_error");
heap_regs->atom_usr_in = LookupAtom ("user_input");
heap_regs->atom_usr_out = LookupAtom ("user_output");
AtomVar = LookupAtom("$VAR");
heap_regs->atom_version_number = LookupAtom("$version_name");
heap_regs->atom_write = LookupAtom ("write");
#ifdef USE_SOCKET
heap_regs->functor_af_inet = MkFunctor(LookupAtom("AF_INET"),2);
heap_regs->functor_af_local = MkFunctor(LookupAtom("AF_LOCAL"),1);
heap_regs->functor_af_unix = MkFunctor(LookupAtom("AF_UNIX"),1);
#endif
heap_regs->functor_alt_not = MkFunctor(AtomAltNot, 1);
#ifdef COROUTINING
heap_regs->functor_array_entry = MkFunctor(AtomArrayAccess, 3);
#endif
heap_regs->functor_arrow = MkFunctor(AtomArrow, 2);
heap_regs->functor_assert = MkFunctor(AtomAssert, 2);
#ifdef COROUTINING
heap_regs->functor_att_goal = MkFunctor(LookupAtom("$att_do"),2);
#endif
heap_regs->functor_braces = MkFunctor(AtomBraces, 1);
heap_regs->functor_call = MkFunctor(AtomCall, 1);
heap_regs->functor_cut_by = MkFunctor(AtomCutBy, 1);
heap_regs->functor_clist = MkFunctor(LookupAtom("$when"), 4);
heap_regs->functor_comma = MkFunctor(AtomComma, 2);
heap_regs->functor_csult = MkFunctor(AtomCsult, 1);
heap_regs->functor_eq = MkFunctor(AtomEq, 2);
heap_regs->functor_execute_in_mod = MkFunctor(LookupAtom("$execute_in_mod"), 2);
heap_regs->functor_execute_within = MkFunctor(LookupAtom("$execute_within"), 1);
heap_regs->functor_g_atom = MkFunctor(LookupAtom("atom"), 1);
heap_regs->functor_g_atomic = MkFunctor(LookupAtom("atomic"), 1);
heap_regs->functor_g_compound = MkFunctor(LookupAtom("compound"), 1);
heap_regs->functor_g_float = MkFunctor(LookupAtom("float"), 1);
heap_regs->functor_g_integer = MkFunctor(LookupAtom("integer"), 1);
heap_regs->functor_g_number = MkFunctor(LookupAtom("number"), 1);
heap_regs->functor_g_primitive = MkFunctor(LookupAtom("primitive"), 1);
heap_regs->functor_g_var = MkFunctor(AtomGVar, 1);
heap_regs->functor_last_execute_within = MkFunctor(LookupAtom("$last_execute_within"), 1);
heap_regs->functor_list = MkFunctor(LookupAtom("."), 2);
heap_regs->functor_module = MkFunctor(LookupAtom(":"), 2);
#ifdef MULTI_ASSIGNMENT_VARIABLES
heap_regs->functor_mutable = MkFunctor(LookupAtom("$mutable_variable"),
sizeof(timed_var)/sizeof(CELL));
#endif
heap_regs->functor_not = MkFunctor(AtomNot, 1);
heap_regs->functor_or = MkFunctor(AtomSemic, 2);
heap_regs->functor_portray = MkFunctor(AtomPortray, 1);
heap_regs->functor_query = MkFunctor(AtomQuery, 1);
heap_regs->functor_spy = MkFunctor(AtomSpy, 1);
heap_regs->functor_stream = MkFunctor (AtomStream, 1);
heap_regs->functor_stream_pos = MkFunctor (AtomStreamPos, 3);
heap_regs->functor_stream_eOS = MkFunctor (LookupAtom("end_of_stream"), 1);
heap_regs->functor_change_module = MkFunctor (LookupAtom("$change_module"), 1);
heap_regs->functor_current_module = MkFunctor (LookupAtom("$current_module"), 1);
FunctorThrow = MkFunctor( LookupAtom("throw"), 1);
heap_regs->functor_u_minus = MkFunctor (heap_regs->atom_minus, 1);
heap_regs->functor_u_plus = MkFunctor (heap_regs->atom_plus, 1);
heap_regs->functor_v_bar = MkFunctor(LookupAtom("|"), 2);
heap_regs->functor_var = MkFunctor(AtomVar, 1);
#ifdef EUROTRA
heap_regs->term_dollar_u = MkAtomTerm(LookupAtom("$u"));
#endif
heap_regs->term_prolog = MkAtomTerm(LookupAtom("prolog"));
heap_regs->term_refound_var = MkAtomTerm(LookupAtom("$I_FOUND_THE_VARIABLE_AGAIN"));
heap_regs->n_of_file_aliases = 0;
heap_regs->file_aliases = NULL;
heap_regs->foreign_code_loaded = NULL;
heap_regs->yap_lib_dir = NULL;
heap_regs->size_of_overflow = 0;
/* make sure no one else can use these two atoms */
heap_regs->pred_goal_expansion = RepPredProp(PredPropByFunc(MkFunctor(LookupAtom("goal_expansion"),3),1));
CurrentModule = 0;
heap_regs->dead_clauses = NULL;
heap_regs->pred_meta_call = RepPredProp(PredPropByFunc(MkFunctor(heap_regs->atom_meta_call,4),0));
heap_regs->pred_dollar_catch = RepPredProp(PredPropByFunc(MkFunctor(LookupAtom("$catch"),3),0));
heap_regs->pred_throw = RepPredProp(PredPropByFunc(FunctorThrow,0));
heap_regs->pred_handle_throw = RepPredProp(PredPropByFunc(MkFunctor(LookupAtom("$handle_throw"),3),0));
ReleaseAtom(AtomOfTerm(heap_regs->term_refound_var));
{
/* make sure we know about the module predicate */
PredEntry *modp = RepPredProp(PredPropByFunc(heap_regs->functor_module,0));
modp->PredFlags |= MetaPredFlag;
}
}
static void
InitVersion(void)
{
PutValue(LookupAtom("$version_name"),
MkAtomTerm(LookupAtom(version_number)));
}
void
InitYaamRegs(void)
{
Atom at;
PredEntry *undefpe;
#if PUSH_REGS
/* Guarantee that after a longjmp we go back to the original abstract
machine registers */
regp = &standard_regs;
#endif /* PUSH_REGS */
PutValue (AtomBreak, MkIntTerm (0));
PutValue (AtomIndex, MkAtomTerm (AtomTrue));
AuxSp = (CELL *)AuxTop;
TR = (tr_fr_ptr)TrailBase;
#ifdef COROUTINING
H = H0 = ((CELL *) GlobalBase)+ 2048;
#else
H = H0 = (CELL *) GlobalBase;
#endif
LCL0 = ASP = (CELL *) LocalBase;
/* notice that an initial choice-point and environment
*must* be created since for the garbage collector to work */
B = NULL;
ENV = NULL;
P = CP = (yamop *)YESCODE;
#ifdef DEPTH_LIMIT
DEPTH = RESET_DEPTH();
#endif
at = FullLookupAtom("$undefp");
{
Prop p = GetPredPropByFunc(MkFunctor(at, 1),0);
if (p == NIL) {
UndefCode = NULL;
} else {
undefpe = RepPredProp (p);
UndefCode = undefpe;
}
}
STATIC_PREDICATES_MARKED = FALSE;
#ifdef FROZEN_STACKS
H = HB = H0 = H_FZ = H_BASE;
#ifdef SBA
BSEG =
#endif /* SBA */
BBREG = B_FZ = B_BASE;
TR = TR_FZ = TR_BASE;
#endif /* FROZEN_STACKS */
CreepFlag = CalculateStackGap();
}
#if defined(YAPOR) || defined(TABLING)
static void
InitYapOr(int Heap,
int Stack,
int Trail,
int aux_number_workers,
int aux_scheduler_loop,
int aux_delayed_release_load) {
#ifdef YAPOR
worker_id = 0;
#endif
/* starting message */
#ifdef YAPOR
if (aux_number_workers > MAX_WORKERS)
abort_optyap("excessive number of workers");
#ifdef ENV_COPY
INFORMATION_MESSAGE("YapOr: copy model - %d worker%s", aux_number_workers, aux_number_workers == 1 ? "":"s");
#elif ACOW
INFORMATION_MESSAGE("YapOr: acow model - %d worker%s", aux_number_workers, aux_number_workers == 1 ? "":"s");
#else /* SBA */
INFORMATION_MESSAGE("YapOr: sba model - %d worker%s", aux_number_workers, aux_number_workers == 1 ? "":"s");
#endif /* ENV_COPY - ACOW - SBA */
#endif /* YAPOR */
#ifdef TABLING
#ifdef TABLING_BATCHED_SCHEDULING
INFORMATION_MESSAGE("YapTab: batched scheduling");
#else /* TABLING_LOCAL_SCHEDULING */
INFORMATION_MESSAGE("YapTab: local scheduling");
#endif /* TABLING_SCHEDULING */
#endif /* TABLING */
#ifdef YAPOR
map_memory(Heap, Stack, Trail, aux_number_workers);
#else
InitMemory (Trail, Heap, Stack);
#endif
/* global initializations */
init_global(aux_number_workers, aux_scheduler_loop, aux_delayed_release_load);
init_signals();
}
#endif
void
InitStacks(int Heap,
int Stack,
int Trail,
int aux_number_workers,
int aux_scheduler_loop,
int aux_delayed_release_load
)
{
int i;
/* initialise system stuff */
#if PUSH_REGS
/* In this case we need to initialise the abstract registers */
regp = &standard_regs;
/* the emulator will eventually copy them to its own local
register array, but for now they exist */
#endif /* PUSH_REGS */
/* Init signal handling and time */
/* also init memory page size, required by later functions */
InitSysbits ();
/* sanity checking for data areas */
if (Trail < MinTrailSpace)
Trail = MinTrailSpace;
if (Stack < MinStackSpace)
Stack = MinStackSpace;
#if defined(YAPOR) || defined(TABLING)
{
#ifdef USE_HEAP
int OKHeap = MinHeapSpace+(sizeof(struct global_data) + aux_number_workers*sizeof(struct local_data))/1024;
#else
int OKHeap = MinHeapSpace+(sizeof(struct global_data) + aux_number_workers*sizeof(struct local_data)+OPT_CHUNK_SIZE)/1024;
#endif
if (Heap < OKHeap)
Heap = OKHeap;
}
#else
if (Heap < MinHeapSpace)
Heap = MinHeapSpace;
#endif
#if defined(YAPOR) || defined(TABLING)
InitYapOr(Heap,
Stack,
Trail,
aux_number_workers,
aux_scheduler_loop,
aux_delayed_release_load);
#else /* Yap */
InitMemory (Trail, Heap, Stack);
#endif /* YAPOR || TABLING */
for (i = 0; i < MaxHash; ++i) {
INIT_RWLOCK(HashChain[i].AERWLock);
HashChain[i].Entry = NIL;
}
LookupAtomWithAddress("FoundVar",&(SF_STORE->AtFoundVar));
ReleaseAtom(AtomFoundVar);
LookupAtomWithAddress("[]",&(SF_STORE->AtNil));
LookupAtomWithAddress(".",&(SF_STORE->AtDot));
/* InitAbsmi must be done before InitCodes */
#ifdef MPW
InitAbsmi(REGS, FunctorList);
#else
InitAbsmi();
#endif
InitModules();
InitCodes();
InitOps();
InitDebug();
InitVersion();
InitSysPath();
InitFlags();
InitModules();
InitStdPreds();
}