f11ab09a60
try to make name more robust (in case Lookup new atom fails) git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1254 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
571 lines
13 KiB
C
571 lines
13 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: Yap.C *
|
|
* Last Rev: *
|
|
* Mods: *
|
|
* Comments: Yap's Main File *
|
|
* *
|
|
*************************************************************************/
|
|
/* static char SccsId[] = "X 4.3.3"; */
|
|
|
|
#include "config.h"
|
|
#include "YapInterface.h"
|
|
|
|
#if (DefTrailSpace < MinTrailSpace)
|
|
#undef DefTrailSpace
|
|
#define DefTrailSpace MinTrailSpace
|
|
#endif
|
|
|
|
#if (DefStackSpace < MinStackSpace)
|
|
#undef DefStackSpace
|
|
#define DefStackSpace MinStackSpace
|
|
#endif
|
|
|
|
#if (DefHeapSpace < MinHeapSpace)
|
|
#undef DefHeapSpace
|
|
#define DefHeapSpace MinHeapSpace
|
|
#endif
|
|
|
|
#define DEFAULT_NUMBERWORKERS 1
|
|
#define DEFAULT_SCHEDULERLOOP 10
|
|
#define DEFAULT_DELAYEDRELEASELOAD 3
|
|
|
|
#ifdef _MSC_VER /* Microsoft's Visual C++ Compiler */
|
|
#ifdef HAVE_UNISTD_H
|
|
#undef HAVE_UNISTD_H
|
|
#endif
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#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
|
|
#if HAVE_STDARG_H
|
|
#include <stdarg.h>
|
|
#endif
|
|
#include <stdlib.h>
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#if HAVE_ERRNO_H
|
|
#include <errno.h>
|
|
#endif
|
|
#if HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
static int PROTO(mygetc, (void));
|
|
static void PROTO(do_bootfile, (char *));
|
|
static void PROTO(do_top_goal,(YAP_Term));
|
|
static void PROTO(exec_top_level,(int, YAP_init_args *));
|
|
|
|
#ifndef LIGHT
|
|
void PROTO (exit, (int));
|
|
#endif
|
|
|
|
#ifdef LIGHT
|
|
#include <unix.h>
|
|
int
|
|
_main (int, char **);
|
|
#else
|
|
int PROTO (main, (int, char **));
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
static int output_msg;
|
|
#endif
|
|
|
|
static char BootFile[] = "boot.yap";
|
|
static char InitFile[] = "init.yap";
|
|
|
|
#ifdef lint
|
|
/* VARARGS1 */
|
|
#endif
|
|
|
|
#ifdef M_WILLIAMS
|
|
long _stksize = 32000;
|
|
#endif
|
|
|
|
static FILE *bootfile;
|
|
|
|
static int eof_found = FALSE;
|
|
static int yap_lineno = 0;
|
|
|
|
#if USE_MYPUTC
|
|
static void
|
|
myputc (int ch)
|
|
{
|
|
putc(ch,stderr);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
mygetc (void)
|
|
{
|
|
int ch;
|
|
if (eof_found)
|
|
return (EOF);
|
|
ch = getc (bootfile);
|
|
if (ch == EOF)
|
|
eof_found = TRUE;
|
|
if (ch == '\n') {
|
|
#ifdef MPW
|
|
ch = 10;
|
|
#endif
|
|
yap_lineno++;
|
|
}
|
|
return (ch);
|
|
}
|
|
|
|
static void
|
|
do_top_goal (YAP_Term Goal)
|
|
{
|
|
#ifdef DEBUG
|
|
if (output_msg)
|
|
fprintf(stderr,"Entering absmi\n");
|
|
#endif
|
|
/* PlPutc(0,'a'); PlPutc(0,'\n'); */
|
|
YAP_RunGoal(Goal);
|
|
}
|
|
|
|
/* do initial boot by consulting the file boot.yap */
|
|
static void
|
|
do_bootfile (char *bootfilename)
|
|
{
|
|
YAP_Term t;
|
|
YAP_Term term_nil = YAP_MkAtomTerm(YAP_LookupAtom("[]"));
|
|
YAP_Term term_end_of_file = YAP_MkAtomTerm(YAP_LookupAtom("end_of_file"));
|
|
YAP_Term term_true = YAP_MkAtomTerm(YAP_LookupAtom("true"));
|
|
YAP_Functor functor_query = YAP_MkFunctor(YAP_LookupAtom("?-"),1);
|
|
|
|
|
|
/* consult boot.pl */
|
|
bootfile = fopen (bootfilename, "r");
|
|
if (bootfile == NULL)
|
|
{
|
|
fprintf(stderr, "[ FATAL ERROR: could not open bootfile %s ]\n", bootfilename);
|
|
exit(1);
|
|
}
|
|
/* the consult mode does not matter here, really */
|
|
/*
|
|
To be honest, YAP_InitConsult does not really do much,
|
|
it's here for the future. It also makes what we want to do clearer.
|
|
*/
|
|
YAP_InitConsult(YAP_CONSULT_MODE,bootfilename);
|
|
while (!eof_found)
|
|
{
|
|
t = YAP_Read(mygetc);
|
|
if (eof_found) {
|
|
break;
|
|
}
|
|
if (t == 0)
|
|
{
|
|
fprintf(stderr, "[ SYNTAX ERROR: while parsing bootfile %s at line %d ]\n", bootfilename, yap_lineno);
|
|
exit(1);
|
|
}
|
|
if (YAP_IsVarTerm (t) || t == term_nil)
|
|
{
|
|
continue;
|
|
}
|
|
else if (t == term_true)
|
|
{
|
|
YAP_Exit(0);
|
|
}
|
|
else if (t == term_end_of_file)
|
|
{
|
|
break;
|
|
}
|
|
else if (YAP_IsPairTerm (t))
|
|
{
|
|
fprintf(stderr, "[ SYSTEM ERROR: consult not allowed in boot file ]\n");
|
|
fprintf(stderr, "error found at line %d and pos %d", yap_lineno, fseek(bootfile,0L,SEEK_CUR));
|
|
}
|
|
else if (YAP_IsApplTerm (t) && YAP_FunctorOfTerm (t) == functor_query)
|
|
{
|
|
do_top_goal(YAP_ArgOfTerm (1, t));
|
|
}
|
|
else
|
|
{
|
|
char *ErrorMessage = YAP_CompileClause(t);
|
|
if (ErrorMessage)
|
|
fprintf(stderr, ErrorMessage);
|
|
}
|
|
/* do backtrack */
|
|
YAP_Reset();
|
|
}
|
|
YAP_EndConsult();
|
|
fclose (bootfile);
|
|
#ifdef DEBUG
|
|
if (output_msg)
|
|
fprintf(stderr,"Boot loaded\n");
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
print_usage(void)
|
|
{
|
|
fprintf(stderr,"\n[ Valid switches for command line arguments: ]\n");
|
|
fprintf(stderr," -? Shows this screen\n");
|
|
fprintf(stderr," -b Boot file \n");
|
|
fprintf(stderr," -l Prolog file\n");
|
|
fprintf(stderr," -h Heap area in Kbytes (default: %d, minimum: %d)\n",
|
|
DefHeapSpace, MinHeapSpace);
|
|
fprintf(stderr," -s Stack area in Kbytes (default: %d, minimum: %d)\n",
|
|
DefStackSpace, MinStackSpace);
|
|
fprintf(stderr," -t Trail area in Kbytes (default: %d, minimum: %d)\n",
|
|
DefTrailSpace, MinTrailSpace);
|
|
#ifdef YAPOR
|
|
fprintf(stderr," -w YapOr option: Number of workers (default: %d)\n",
|
|
DEFAULT_NUMBERWORKERS);
|
|
fprintf(stderr," -sl YapOr option: Loop scheduler executions before look for hiden shared work (default: %d)\n", DEFAULT_SCHEDULERLOOP);
|
|
fprintf(stderr," -d YapOr option: Value of delayed release of load (default: %d)\n",
|
|
DEFAULT_DELAYEDRELEASELOAD);
|
|
#endif
|
|
fprintf(stderr,"\n");
|
|
}
|
|
|
|
/*
|
|
* proccess command line arguments: valid switches are: -b boot -s
|
|
* stack area size (K) -h heap area size -a aux stack size -e
|
|
* emacs_mode -m reserved memory for alloc IF DEBUG -p if you
|
|
* want to check out startup IF MAC -mpw if we are using the mpw
|
|
* shell
|
|
*/
|
|
|
|
static int
|
|
parse_yap_arguments(int argc, char *argv[], YAP_init_args *iap)
|
|
{
|
|
char *p;
|
|
#if USE_MALLOC
|
|
int BootMode = YAP_FULL_BOOT_FROM_PROLOG;
|
|
#else
|
|
int BootMode = YAP_BOOT_FROM_SAVED_CODE;
|
|
#endif
|
|
int *ssize;
|
|
|
|
while (--argc > 0)
|
|
{
|
|
p = *++argv;
|
|
if (*p == '-')
|
|
switch (*++p)
|
|
{
|
|
case 'b':
|
|
BootMode = YAP_BOOT_FROM_PROLOG;
|
|
iap->YapPrologBootFile = *++argv;
|
|
argc--;
|
|
break;
|
|
case '?':
|
|
print_usage();
|
|
exit(EXIT_SUCCESS);
|
|
case 'w':
|
|
ssize = &(iap->NumberWorkers);
|
|
goto GetSize;
|
|
case 'd':
|
|
ssize = &(iap->DelayedReleaseLoad);
|
|
goto GetSize;
|
|
#ifdef USE_SOCKET
|
|
case 'c': /* running as client */
|
|
{
|
|
char *host, *p1;
|
|
long port;
|
|
char *ptr;
|
|
|
|
host = *++argv;
|
|
argc--;
|
|
if (host == NULL || host[0] == '-')
|
|
YAP_Error(0,0L,"sockets must receive host to connect to");
|
|
p1 = *++argv;
|
|
argc--;
|
|
if (p1 == NULL || p1[0] == '-')
|
|
YAP_Error(0,0L,"sockets must receive port to connect to");
|
|
port = strtol(p1, &ptr, 10);
|
|
if (ptr == NULL || ptr[0] != '\0')
|
|
YAP_Error(0,0L,"port argument to socket must be a number");
|
|
YAP_InitSocks(host,port);
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef EMACS
|
|
case 'e':
|
|
emacs_mode = TRUE;
|
|
{
|
|
File fd;
|
|
strcpy (emacs_tmp, ++p);
|
|
if ((fd = fopen (emacs_tmp, "w")) == NIL)
|
|
fprintf(stderr, "[ Warning: unable to communicate with emacs: failed to open %s ]\n", emacs_tmp);
|
|
fclose (fd);
|
|
unlink (emacs_tmp);
|
|
p = *++argv;
|
|
--argc;
|
|
strcpy (emacs_tmp2, p);
|
|
if ((fd = fopen (emacs_tmp2, "w")) == NIL)
|
|
fprintf(stderr, "Unable to communicate with emacs: failed to open %s\n", emacs_tmp2);
|
|
fclose (fd);
|
|
unlink (emacs_tmp2);
|
|
}
|
|
break;
|
|
#endif /* EMACS */
|
|
case 'f':
|
|
iap->FastBoot = TRUE;
|
|
break;
|
|
#ifdef MPWSHELL
|
|
case 'm':
|
|
if (*++p == 'p' && *++p == 'w' && *++p == '\0')
|
|
mpwshell = TRUE;
|
|
break;
|
|
#endif
|
|
case 's':
|
|
case 'S':
|
|
ssize = &(iap->StackSize);
|
|
if (p[1] == 'l') {
|
|
p++;
|
|
ssize = &(iap->SchedulerLoop);
|
|
}
|
|
goto GetSize;
|
|
case 'h':
|
|
case 'H':
|
|
ssize = &(iap->HeapSize);
|
|
goto GetSize;
|
|
case 't':
|
|
case 'T':
|
|
ssize = &(iap->TrailSize);
|
|
GetSize:
|
|
if (*++p == '\0')
|
|
{
|
|
if (argc > 1)
|
|
--argc, p = *++argv;
|
|
else
|
|
{
|
|
fprintf(stderr,"[ YAP unrecoverable error: missing size in flag %s ]", argv[0]);
|
|
print_usage();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
{
|
|
int i = 0, ch;
|
|
while ((ch = *p++) >= '0' && ch <= '9')
|
|
i = i * 10 + ch - '0';
|
|
if (ch)
|
|
{
|
|
fprintf(stderr,"[ YAP unrecoverable error: illegal size specification %s ]", argv[-1]);
|
|
YAP_Exit(1);
|
|
}
|
|
*ssize = i;
|
|
}
|
|
break;
|
|
#ifdef DEBUG
|
|
case 'p':
|
|
YAP_SetOutputMessage();
|
|
output_msg = TRUE;
|
|
break;
|
|
#endif
|
|
case 'L':
|
|
p++;
|
|
while (*p != '\0' && (*p == ' ' || *p == '\t'))
|
|
p++;
|
|
/* skip zeroth argument */
|
|
argc--;
|
|
if (argc == 0) {
|
|
fprintf(stderr," [ YAP unrecoverable error: missing file name with option 'l' ]\n");
|
|
exit(1);
|
|
}
|
|
argv++;
|
|
if (p[0] == '-' && p[1] == '-'&& p[2] == '\0') {
|
|
/* we're done here */
|
|
argc = 1;
|
|
}
|
|
iap->YapPrologRCFile = *argv;
|
|
argv++;
|
|
iap->HaltAfterConsult = TRUE;
|
|
break;
|
|
case 'l':
|
|
if ((*argv)[0] == '\0')
|
|
iap->YapPrologRCFile = *argv;
|
|
else {
|
|
argc--;
|
|
if (argc == 0) {
|
|
fprintf(stderr," [ YAP unrecoverable error: missing file name with option 'l' ]\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
argv++;
|
|
iap->YapPrologRCFile = *argv;
|
|
}
|
|
break;
|
|
case '-':
|
|
/* skip remaining arguments */
|
|
argc = 1;
|
|
break;
|
|
default:
|
|
{
|
|
fprintf(stderr,"[ YAP unrecoverable error: unknown switch -%c ]\n", *p);
|
|
print_usage();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
else {
|
|
iap->SavedState = p;
|
|
}
|
|
}
|
|
return(BootMode);
|
|
}
|
|
|
|
static char boot_file[256];
|
|
|
|
static int
|
|
init_standard_system(int argc, char *argv[], YAP_init_args *iap)
|
|
{
|
|
int BootMode;
|
|
|
|
iap->SavedState = NULL;
|
|
iap->HeapSize = 0;
|
|
iap->StackSize = 0;
|
|
iap->TrailSize = 0;
|
|
iap->YapLibDir = NULL;
|
|
iap->YapPrologBootFile = NULL;
|
|
iap->YapPrologInitFile = NULL;
|
|
iap->YapPrologRCFile = NULL;
|
|
iap->HaltAfterConsult = FALSE;
|
|
iap->FastBoot = FALSE;
|
|
iap->NumberWorkers = DEFAULT_NUMBERWORKERS;
|
|
iap->SchedulerLoop = DEFAULT_SCHEDULERLOOP;
|
|
iap->DelayedReleaseLoad = DEFAULT_DELAYEDRELEASELOAD;
|
|
iap->PrologShouldHandleInterrupts = TRUE;
|
|
iap->Argc = argc;
|
|
iap->Argv = argv;
|
|
iap->ErrorNo = 0;
|
|
iap->ErrorCause = NULL;
|
|
|
|
BootMode = parse_yap_arguments(argc,argv,iap);
|
|
|
|
if (BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
|
|
#if HAVE_STRNCAT
|
|
strncpy(boot_file, PL_SRC_DIR, 256);
|
|
#else
|
|
strcpy(boot_file, PL_SRC_DIR);
|
|
#endif
|
|
#if HAVE_STRNCAT
|
|
strncat(boot_file, BootFile, 256);
|
|
#else
|
|
strcat(boot_file, BootFile);
|
|
#endif
|
|
iap->YapPrologBootFile = boot_file;
|
|
}
|
|
/* init memory */
|
|
if (BootMode == YAP_BOOT_FROM_PROLOG ||
|
|
BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
BootMode = YAP_Init(iap);
|
|
} else {
|
|
BootMode = YAP_Init(iap);
|
|
}
|
|
if (iap->ErrorNo) {
|
|
/* boot failed */
|
|
YAP_Error(iap->ErrorNo,0L,iap->ErrorCause);
|
|
}
|
|
return(BootMode);
|
|
}
|
|
|
|
|
|
static void
|
|
exec_top_level(int BootMode, YAP_init_args *iap)
|
|
{
|
|
YAP_Term atomfalse;
|
|
YAP_Atom livegoal;
|
|
|
|
if (BootMode == YAP_BOOT_FROM_SAVED_STACKS)
|
|
{
|
|
/* continue executing from the frozen stacks */
|
|
YAP_ContinueGoal();
|
|
}
|
|
else if (BootMode == YAP_BOOT_FROM_PROLOG ||
|
|
BootMode == YAP_FULL_BOOT_FROM_PROLOG)
|
|
{
|
|
YAP_Atom livegoal;
|
|
/* read the bootfile */
|
|
do_bootfile (iap->YapPrologBootFile ? iap->YapPrologBootFile : BootFile);
|
|
livegoal = YAP_FullLookupAtom("$live");
|
|
/* initialise the top-level */
|
|
if (BootMode == YAP_FULL_BOOT_FROM_PROLOG) {
|
|
char init_file[256];
|
|
YAP_Atom atfile;
|
|
YAP_Functor fgoal;
|
|
YAP_Term goal, as[2];
|
|
|
|
#if HAVE_STRNCAT
|
|
strncpy(init_file, PL_SRC_DIR, 256);
|
|
#else
|
|
strcpy(init_file, PL_SRC_DIR);
|
|
#endif
|
|
#if HAVE_STRNCAT
|
|
strncat(init_file, InitFile, 256);
|
|
#else
|
|
strcat(init_file, InitFile);
|
|
#endif
|
|
/* consult init file */
|
|
atfile = YAP_LookupAtom(init_file);
|
|
as[0] = YAP_MkAtomTerm(atfile);
|
|
as[1] = YAP_MkAtomTerm(YAP_LookupAtom("prolog"));
|
|
fgoal = YAP_MkFunctor(YAP_FullLookupAtom("$consult"), 2);
|
|
goal = YAP_MkApplTerm(fgoal, 2, as);
|
|
/* launch consult */
|
|
YAP_RunGoal(goal);
|
|
/* set default module to user */
|
|
as[0] = YAP_MkAtomTerm(YAP_LookupAtom("user"));
|
|
fgoal = YAP_MkFunctor(YAP_FullLookupAtom("module"), 1);
|
|
goal = YAP_MkApplTerm(fgoal, 1, as);
|
|
YAP_RunGoal(goal);
|
|
}
|
|
YAP_PutValue(livegoal, YAP_MkAtomTerm (YAP_FullLookupAtom("$true")));
|
|
|
|
}
|
|
/* the top-level is now ready */
|
|
|
|
/* read it before case someone, that is, Ashwin, hides
|
|
the atom false away ;-).
|
|
*/
|
|
livegoal = YAP_FullLookupAtom("$live");
|
|
atomfalse = YAP_MkAtomTerm (YAP_FullLookupAtom("$false"));
|
|
while (YAP_GetValue (livegoal) != atomfalse) {
|
|
YAP_Reset();
|
|
do_top_goal (YAP_MkAtomTerm (livegoal));
|
|
}
|
|
YAP_Exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
#ifdef LIGHT
|
|
int
|
|
_main (int argc, char **argv)
|
|
#else
|
|
int
|
|
main (int argc, char **argv)
|
|
#endif
|
|
{
|
|
int BootMode;
|
|
YAP_init_args init_args;
|
|
|
|
BootMode = init_standard_system(argc, argv, &init_args);
|
|
if (BootMode == YAP_BOOT_ERROR) {
|
|
fprintf(stderr,"[ FATAL ERROR: could not find saved state ]\n");
|
|
exit(1);
|
|
}
|
|
|
|
exec_top_level(BootMode, &init_args);
|
|
|
|
return(0);
|
|
}
|
|
|