3 * Copyright (c) 1991-1994, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
18 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
22 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
31 /* Put this after #includes because fork and vfork prototypes may
42 # include <sys/file.h>
48 static void xstat _((void));
53 /* paranoid version of malloc */
55 /* NOTE: Do not call the next three routines directly. Use the macros
56 * in handy.h, so that we can easily redefine everything to do tracking of
57 * allocated hunks back to the original New to track down any memory leaks.
58 * XXX This advice seems to be widely ignored :-( --AD August 1996.
72 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
78 croak("panic: malloc");
80 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
81 #if !(defined(I286) || defined(atarist))
82 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
84 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
91 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
97 /* paranoid version of realloc */
100 saferealloc(where,size)
109 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
111 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
115 PerlIO_printf(PerlIO_stderr(), "Reallocation too large: %lx\n", size) FLUSH;
120 croak("Null realloc");
123 croak("panic: realloc");
125 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
127 #if !(defined(I286) || defined(atarist))
129 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
130 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
134 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
135 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
144 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
150 /* safe version of free */
156 #if !(defined(I286) || defined(atarist))
157 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
159 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",where,an++));
167 /* safe version of calloc */
170 safecalloc(count, size)
177 if (size * count > 0xffff) {
178 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size * count) FLUSH;
183 if ((long)size < 0 || (long)count < 0)
184 croak("panic: calloc");
186 #if !(defined(I286) || defined(atarist))
187 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
189 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
192 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
194 memset((void*)ptr, 0, size);
200 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
206 #endif /* !safemalloc */
210 #define ALIGN sizeof(long)
217 register Malloc_t where;
219 where = safemalloc(size + ALIGN);
223 return where + ALIGN;
227 safexrealloc(where,size)
231 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
244 x = where[0] + 100 * where[1];
250 safexcalloc(x,count,size)
255 register Malloc_t where;
257 where = safexmalloc(x, size * count + ALIGN);
259 memset((void*)where + ALIGN, 0, size * count);
262 return where + ALIGN;
270 for (i = 0; i < MAXXCOUNT; i++) {
271 if (xcount[i] > lastxcount[i]) {
272 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
273 lastxcount[i] = xcount[i];
278 #endif /* LEAKTEST */
280 /* copy a string up to some (non-backslashed) delimiter, if any */
283 cpytill(to,from,fromend,delim,retlen)
286 register char *fromend;
292 for (; from < fromend; from++,to++) {
294 if (from[1] == delim)
296 else if (from[1] == '\\')
299 else if (*from == delim)
304 *retlen = to - origto;
308 /* return ptr to little string in big string, NULL if not found */
309 /* This routine was donated by Corey Satten. */
314 register char *little;
316 register char *s, *x;
327 for (x=big,s=little; *s; /**/ ) {
341 /* same as instr but allow embedded nulls */
344 ninstr(big, bigend, little, lend)
346 register char *bigend;
350 register char *s, *x;
351 register I32 first = *little;
352 register char *littleend = lend;
354 if (!first && little >= littleend)
356 if (bigend - big < littleend - little)
358 bigend -= littleend - little++;
359 while (big <= bigend) {
362 for (x=big,s=little; s < littleend; /**/ ) {
374 /* reverse of the above--find last substring */
377 rninstr(big, bigend, little, lend)
383 register char *bigbeg;
384 register char *s, *x;
385 register I32 first = *little;
386 register char *littleend = lend;
388 if (!first && little >= littleend)
391 big = bigend - (littleend - little++);
392 while (big >= bigbeg) {
395 for (x=big+2,s=little; s < littleend; /**/ ) {
407 /* Initialize locale (and the fold[] array).*/
409 perl_init_i18nl10n(printwarn)
414 * 1 = set ok or not applicable,
415 * 0 = fallback to C locale,
416 * -1 = fallback to C locale failed
418 #if defined(HAS_SETLOCALE) && defined(LC_CTYPE)
419 char * lang = getenv("LANG");
420 char * lc_all = getenv("LC_ALL");
421 char * lc_ctype = getenv("LC_CTYPE");
424 if (setlocale(LC_CTYPE, "") == NULL && (lc_all || lc_ctype || lang)) {
428 printwarn && (!(doit = getenv("PERL_BADLANG")) || atoi(doit))) {
429 PerlIO_printf(PerlIO_stderr(), "warning: setlocale(LC_CTYPE, \"\") failed.\n");
430 PerlIO_printf(PerlIO_stderr(),
431 "warning: LC_ALL = \"%s\", LC_CTYPE = \"%s\", LANG = \"%s\",\n",
432 lc_all ? lc_all : "(null)",
433 lc_ctype ? lc_ctype : "(null)",
434 lang ? lang : "(null)"
436 PerlIO_printf(PerlIO_stderr(), "warning: falling back to the \"C\" locale.\n");
439 if (setlocale(LC_CTYPE, "C") == NULL)
443 for (i = 0; i < 256; i++) {
444 if (isUPPER(i)) fold[i] = toLOWER(i);
445 else if (isLOWER(i)) fold[i] = toUPPER(i);
453 fbm_compile(sv, iflag)
457 register unsigned char *s;
458 register unsigned char *table;
460 register U32 len = SvCUR(sv);
465 return; /* can't have offsets that big */
467 table = (unsigned char*)(SvPVX(sv) + len + 1);
469 for (i = 0; i < 256; i++) {
473 while (s >= (unsigned char*)(SvPVX(sv)))
475 if (table[*s] == len) {
478 table[*s] = table[fold[*s]] = i;
492 sv_upgrade(sv, SVt_PVBM);
493 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
496 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
498 register U32 tmp, foldtmp;
500 for (i = 0; i < len; i++) {
502 foldtmp=freq[fold[s[i]]];
503 if (tmp < frequency && foldtmp < frequency) {
505 /* choose most frequent among the two */
506 frequency = (tmp > foldtmp) ? tmp : foldtmp;
511 for (i = 0; i < len; i++) {
512 if (freq[s[i]] < frequency) {
514 frequency = freq[s[i]];
518 BmRARE(sv) = s[rarest];
519 BmPREVIOUS(sv) = rarest;
520 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
524 fbm_instr(big, bigend, littlestr)
526 register unsigned char *bigend;
529 register unsigned char *s;
531 register I32 littlelen;
532 register unsigned char *little;
533 register unsigned char *table;
534 register unsigned char *olds;
535 register unsigned char *oldlittle;
537 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
539 char *l = SvPV(littlestr,len);
542 return ninstr((char*)big,(char*)bigend, l, l + len);
545 littlelen = SvCUR(littlestr);
546 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
547 if (littlelen > bigend - big)
549 little = (unsigned char*)SvPVX(littlestr);
550 if (SvCASEFOLD(littlestr)) { /* oops, fake it */
551 big = bigend - littlelen; /* just start near end */
552 if (bigend[-1] == '\n' && little[littlelen-1] != '\n')
556 s = bigend - littlelen;
557 if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
558 return (char*)s; /* how sweet it is */
559 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
562 if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
568 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
569 if (--littlelen >= bigend - big)
572 oldlittle = little = table - 2;
573 if (SvCASEFOLD(littlestr)) { /* case insensitive? */
577 if (tmp = table[*s]) {
579 if (bigend - s > tmp) {
584 if ((s += tmp) < bigend)
590 tmp = littlelen; /* less expensive than calling strncmp() */
593 if (*--s == *--little || fold[*s] == *little)
595 s = olds + 1; /* here we pay the price for failure */
597 if (s < bigend) /* fake up continue to outer loop */
609 if (tmp = table[*s]) {
611 if (bigend - s > tmp) {
616 if ((s += tmp) < bigend)
622 tmp = littlelen; /* less expensive than calling strncmp() */
625 if (*--s == *--little)
627 s = olds + 1; /* here we pay the price for failure */
629 if (s < bigend) /* fake up continue to outer loop */
641 screaminstr(bigstr, littlestr)
645 register unsigned char *s, *x;
646 register unsigned char *big;
648 register I32 previous;
650 register unsigned char *little;
651 register unsigned char *bigend;
652 register unsigned char *littleend;
654 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
656 little = (unsigned char *)(SvPVX(littlestr));
657 littleend = little + SvCUR(littlestr);
659 previous = BmPREVIOUS(littlestr);
660 big = (unsigned char *)(SvPVX(bigstr));
661 bigend = big + SvCUR(bigstr);
662 while (pos < previous) {
663 if (!(pos += screamnext[pos]))
667 if (SvCASEFOLD(littlestr)) { /* case insignificant? */
669 if (big[pos-previous] != first && big[pos-previous] != fold[first])
671 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
674 if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
680 return (char *)(big+pos-previous);
682 pos += screamnext[pos] /* does this goof up anywhere? */
687 if (big[pos-previous] != first)
689 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
698 return (char *)(big+pos-previous);
699 } while ( pos += screamnext[pos] );
701 #else /* !POINTERRIGOR */
703 if (SvCASEFOLD(littlestr)) { /* case insignificant? */
705 if (big[pos] != first && big[pos] != fold[first])
707 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
710 if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
716 return (char *)(big+pos);
718 pos += screamnext[pos] /* does this goof up anywhere? */
723 if (big[pos] != first)
725 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
734 return (char *)(big+pos);
736 pos += screamnext[pos]
739 #endif /* POINTERRIGOR */
754 if (fold[*a++] == *b++)
761 /* copy a string to a safe spot */
767 register char *newaddr;
769 New(902,newaddr,strlen(sv)+1,char);
770 (void)strcpy(newaddr,sv);
774 /* same thing but with a known length */
781 register char *newaddr;
783 New(903,newaddr,len+1,char);
784 Copy(sv,newaddr,len,char); /* might not be null terminated */
785 newaddr[len] = '\0'; /* is now */
789 #if !defined(I_STDARG) && !defined(I_VARARGS)
792 * Fallback on the old hackers way of doing varargs
797 mess(pat,a1,a2,a3,a4)
803 I32 usermess = strEQ(pat,"%s");
808 tmpstr = sv_newmortal();
809 sv_setpv(tmpstr, (char*)a1);
810 *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
813 (void)sprintf(s,pat,a1,a2,a3,a4);
819 strcpy(s, " during global destruction.\n");
821 if (curcop->cop_line) {
822 (void)sprintf(s," at %s line %ld",
823 SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
826 if (GvIO(last_in_gv) &&
827 IoLINES(GvIOp(last_in_gv)) ) {
828 (void)sprintf(s,", <%s> %s %ld",
829 last_in_gv == argvgv ? "" : GvENAME(last_in_gv),
830 strEQ(rs,"\n") ? "line" : "chunk",
831 (long)IoLINES(GvIOp(last_in_gv)));
834 (void)strcpy(s,".\n");
838 sv_catpv(tmpstr,buf+1);
841 if (s - s_start >= sizeof(buf)) { /* Ooops! */
843 PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
845 PerlIO_puts(PerlIO_stderr(), buf);
846 PerlIO_puts(PerlIO_stderr(),"panic: message overflow - memory corrupted!\n");
850 return SvPVX(tmpstr);
856 void croak(pat,a1,a2,a3,a4)
866 message = mess(pat,a1,a2,a3,a4);
868 SV *olddiehook = diehook;
869 diehook = Nullsv; /* sv_2cv might call croak() */
870 cv = sv_2cv(olddiehook, &stash, &gv, 0);
871 diehook = olddiehook;
872 if (cv && !CvDEPTH(cv)) {
877 PUSHs(sv_2mortal(newSVpv(message,0)));
879 perl_call_sv((SV*)cv, G_DISCARD);
883 restartop = die_where(message);
884 Siglongjmp(top_env, 3);
886 PerlIO_puts(PerlIO_stderr(),message);
887 (void)PerlIO_flush(PerlIO_stderr());
893 (void)UNLINK(e_tmpname);
897 statusvalue = SHIFTSTATUS(statusvalue);
899 my_exit((U32)vaxc$errno?vaxc$errno:errno?errno:statusvalue?statusvalue:SS$_ABORT);
901 my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
906 void warn(pat,a1,a2,a3,a4)
916 message = mess(pat,a1,a2,a3,a4);
918 SV *oldwarnhook = warnhook;
919 warnhook = Nullsv; /* sv_2cv might end up calling warn() */
920 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
921 warnhook = oldwarnhook;
922 if (cv && !CvDEPTH(cv)) {
927 PUSHs(sv_2mortal(newSVpv(message,0)));
929 perl_call_sv((SV*)cv, G_DISCARD);
933 PerlIO_puts(PerlIO_stderr(),message);
937 (void)PerlIO_flush(PerlIO_stderr());
940 #else /* !defined(I_STDARG) && !defined(I_VARARGS) */
944 mess(char *pat, va_list *args)
958 #ifdef USE_CHAR_VSPRINTF
966 usermess = strEQ(pat, "%s");
968 tmpstr = sv_newmortal();
969 sv_setpv(tmpstr, va_arg(*args, char *));
970 *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
973 (void) vsprintf(s,pat,*args);
980 strcpy(s, " during global destruction.\n");
982 if (curcop->cop_line) {
983 (void)sprintf(s," at %s line %ld",
984 SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
987 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
988 bool line_mode = (RsSIMPLE(rs) &&
989 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
990 (void)sprintf(s,", <%s> %s %ld",
991 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
992 line_mode ? "line" : "chunk",
993 (long)IoLINES(GvIOp(last_in_gv)));
996 (void)strcpy(s,".\n");
1000 sv_catpv(tmpstr,buf+1);
1003 if (s - s_start >= sizeof(buf)) { /* Ooops! */
1005 PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
1007 PerlIO_puts(PerlIO_stderr(), buf);
1008 PerlIO_puts(PerlIO_stderr(), "panic: message overflow - memory corrupted!\n");
1012 return SvPVX(tmpstr);
1019 croak(char* pat, ...)
1023 croak(pat, va_alist)
1035 va_start(args, pat);
1039 message = mess(pat, &args);
1042 SV *olddiehook = diehook;
1043 diehook = Nullsv; /* sv_2cv might call croak() */
1044 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1045 diehook = olddiehook;
1046 if (cv && !CvDEPTH(cv)) {
1051 PUSHs(sv_2mortal(newSVpv(message,0)));
1053 perl_call_sv((SV*)cv, G_DISCARD);
1057 restartop = die_where(message);
1058 Siglongjmp(top_env, 3);
1060 PerlIO_puts(PerlIO_stderr(),message);
1061 (void)PerlIO_flush(PerlIO_stderr());
1067 (void)UNLINK(e_tmpname);
1068 Safefree(e_tmpname);
1071 statusvalue = SHIFTSTATUS(statusvalue);
1073 my_exit((U32)(vaxc$errno?vaxc$errno:(statusvalue?statusvalue:44)));
1075 my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
1096 va_start(args, pat);
1100 message = mess(pat, &args);
1104 SV *oldwarnhook = warnhook;
1105 warnhook = Nullsv; /* sv_2cv might end up calling warn() */
1106 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1107 warnhook = oldwarnhook;
1108 if (cv && !CvDEPTH(cv)) {
1113 PUSHs(sv_2mortal(newSVpv(message,0)));
1115 perl_call_sv((SV*)cv, G_DISCARD);
1119 PerlIO_puts(PerlIO_stderr(),message);
1123 (void)PerlIO_flush(PerlIO_stderr());
1125 #endif /* !defined(I_STDARG) && !defined(I_VARARGS) */
1127 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1132 register I32 i=setenv_getix(nam); /* where does it go? */
1134 if (environ == origenviron) { /* need we copy environment? */
1140 for (max = i; environ[max]; max++) ;
1141 New(901,tmpenv, max+2, char*);
1142 for (j=0; j<max; j++) /* copy environment */
1143 tmpenv[j] = savepv(environ[j]);
1144 tmpenv[max] = Nullch;
1145 environ = tmpenv; /* tell exec where it is now */
1148 while (environ[i]) {
1149 environ[i] = environ[i+1];
1154 if (!environ[i]) { /* does not exist yet */
1155 Renew(environ, i+2, char*); /* just expand it a bit */
1156 environ[i+1] = Nullch; /* make sure it's null terminated */
1159 Safefree(environ[i]);
1160 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
1162 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1164 /* MS-DOS requires environment variable names to be in uppercase */
1165 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1166 * some utilities and applications may break because they only look
1167 * for upper case strings. (Fixed strupr() bug here.)]
1169 strcpy(environ[i],nam); strupr(environ[i]);
1170 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1178 register I32 i, len = strlen(nam);
1180 for (i = 0; environ[i]; i++) {
1181 if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
1182 break; /* strnEQ must come first to avoid */
1183 } /* potential SEGV's */
1188 #ifdef UNLINK_ALL_VERSIONS
1190 unlnk(f) /* unlink all versions of a file */
1195 for (i = 0; unlink(f) >= 0; i++) ;
1200 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
1202 my_bcopy(from,to,len)
1203 register char *from;
1209 if (from - to >= 0) {
1217 *(--to) = *(--from);
1223 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
1239 my_memcmp(s1,s2,len)
1240 register unsigned char *s1;
1241 register unsigned char *s2;
1247 if (tmp = *s1++ - *s2++)
1252 #endif /* HAS_MEMCMP */
1254 #if defined(I_STDARG) || defined(I_VARARGS)
1257 #ifdef USE_CHAR_VSPRINTF
1262 vsprintf(dest, pat, args)
1263 char *dest, *pat, *args;
1267 fakebuf._ptr = dest;
1268 fakebuf._cnt = 32767;
1272 fakebuf._flag = _IOWRT|_IOSTRG;
1273 _doprnt(pat, args, &fakebuf); /* what a kludge */
1274 (void)putc('\0', &fakebuf);
1275 #ifdef USE_CHAR_VSPRINTF
1278 return 0; /* perl doesn't use return value */
1282 #endif /* HAS_VPRINTF */
1283 #endif /* I_VARARGS || I_STDARGS */
1286 #if BYTEORDER != 0x4321
1288 #ifndef CAN_PROTOTYPE
1295 #if (BYTEORDER & 1) == 0
1298 result = ((s & 255) << 8) + ((s >> 8) & 255);
1306 #ifndef CAN_PROTOTYPE
1315 char c[sizeof(long)];
1318 #if BYTEORDER == 0x1234
1319 u.c[0] = (l >> 24) & 255;
1320 u.c[1] = (l >> 16) & 255;
1321 u.c[2] = (l >> 8) & 255;
1325 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1326 croak("Unknown BYTEORDER\n");
1331 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1332 u.c[o & 0xf] = (l >> s) & 255;
1340 #ifndef CAN_PROTOTYPE
1349 char c[sizeof(long)];
1352 #if BYTEORDER == 0x1234
1353 u.c[0] = (l >> 24) & 255;
1354 u.c[1] = (l >> 16) & 255;
1355 u.c[2] = (l >> 8) & 255;
1359 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1360 croak("Unknown BYTEORDER\n");
1367 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1368 l |= (u.c[o & 0xf] & 255) << s;
1375 #endif /* BYTEORDER != 0x4321 */
1379 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1380 * If these functions are defined,
1381 * the BYTEORDER is neither 0x1234 nor 0x4321.
1382 * However, this is not assumed.
1386 #define HTOV(name,type) \
1393 char c[sizeof(type)]; \
1397 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1398 u.c[i] = (n >> s) & 0xFF; \
1403 #define VTOH(name,type) \
1410 char c[sizeof(type)]; \
1416 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1417 n += (u.c[i] & 0xFF) << s; \
1422 #if defined(HAS_HTOVS) && !defined(htovs)
1425 #if defined(HAS_HTOVL) && !defined(htovl)
1428 #if defined(HAS_VTOHS) && !defined(vtohs)
1431 #if defined(HAS_VTOHL) && !defined(vtohl)
1435 #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) /* VMS' my_popen() is in
1436 VMS.c, same with OS/2. */
1443 register I32 this, that;
1446 I32 doexec = strNE(cmd,"-");
1450 this = (*mode == 'w');
1455 taint_proper("Insecure %s%s", "EXEC");
1458 while ((pid = (doexec?vfork():fork())) < 0) {
1459 if (errno != EAGAIN) {
1462 croak("Can't fork");
1473 if (p[THIS] != (*mode == 'r')) {
1474 dup2(p[THIS], *mode == 'r');
1478 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
1484 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
1487 do_exec(cmd); /* may or may not use the shell */
1491 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1492 sv_setiv(GvSV(tmpgv),(I32)getpid());
1494 hv_clear(pidstatus); /* we have no children */
1499 do_execfree(); /* free any memory malloced by child on vfork */
1501 if (p[that] < p[this]) {
1502 dup2(p[this], p[that]);
1506 sv = *av_fetch(fdpid,p[this],TRUE);
1507 (void)SvUPGRADE(sv,SVt_IV);
1510 return PerlIO_fdopen(p[this], mode);
1513 #if defined(atarist)
1520 /* Needs work for PerlIO ! */
1521 return popen(PerlIO_exportFILE(cmd), mode);
1525 #endif /* !DOSISH */
1532 struct stat tmpstatbuf;
1534 PerlIO_printf(PerlIO_stderr(),"%s", s);
1535 for (fd = 0; fd < 32; fd++) {
1536 if (Fstat(fd,&tmpstatbuf) >= 0)
1537 PerlIO_printf(PerlIO_stderr()," %d",fd);
1539 PerlIO_printf(PerlIO_stderr(),"\n");
1549 #if defined(HAS_FCNTL) && defined(F_DUPFD)
1553 return fcntl(oldfd, F_DUPFD, newfd);
1562 while ((fd = dup(oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
1565 close(fdtmp[--fdx]);
1571 #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) /* VMS' my_popen() is in VMS.c */
1576 Signal_t (*hstat)(), (*istat)(), (*qstat)();
1581 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
1582 pid = (int)SvIVX(*svp);
1587 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1589 hstat = signal(SIGHUP, SIG_IGN);
1590 istat = signal(SIGINT, SIG_IGN);
1591 qstat = signal(SIGQUIT, SIG_IGN);
1593 pid = wait4pid(pid, &status, 0);
1594 } while (pid == -1 && errno == EINTR);
1595 signal(SIGHUP, hstat);
1596 signal(SIGINT, istat);
1597 signal(SIGQUIT, qstat);
1598 return(pid < 0 ? pid : status);
1600 #endif /* !DOSISH */
1602 #if !defined(DOSISH) || defined(OS2)
1604 wait4pid(pid,statusp,flags)
1616 sprintf(spid, "%d", pid);
1617 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
1618 if (svp && *svp != &sv_undef) {
1619 *statusp = SvIVX(*svp);
1620 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
1627 hv_iterinit(pidstatus);
1628 if (entry = hv_iternext(pidstatus)) {
1629 pid = atoi(hv_iterkey(entry,(I32*)statusp));
1630 sv = hv_iterval(pidstatus,entry);
1631 *statusp = SvIVX(sv);
1632 sprintf(spid, "%d", pid);
1633 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
1638 return waitpid(pid,statusp,flags);
1641 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
1646 croak("Can't do waitpid with flags");
1648 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
1649 pidgone(result,*statusp);
1658 #endif /* !DOSISH */
1669 sprintf(spid, "%d", pid);
1670 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
1671 (void)SvUPGRADE(sv,SVt_IV);
1676 #if defined(atarist) || (defined(OS2) && !defined(HAS_FORK))
1682 /* Needs work for PerlIO ! */
1683 FILE *f = PerlIO_findFILE(ptr);
1684 I32 result = pclose(f);
1685 PerlIO_releaseFILE(ptr,f);
1691 repeatcpy(to,from,len,count)
1693 register char *from;
1698 register char *frombase = from;
1706 while (count-- > 0) {
1707 for (todo = len; todo > 0; todo--) {
1714 #ifndef CASTNEGFLOAT
1722 # define BIGDOUBLE 2147483648.0
1724 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
1727 return (unsigned long)f;
1729 return (unsigned long)along;
1736 /* Unfortunately, on some systems the cast_uv() function doesn't
1737 work with the system-supplied definition of ULONG_MAX. The
1738 comparison (f >= ULONG_MAX) always comes out true. It must be a
1739 problem with the compiler constant folding.
1741 In any case, this workaround should be fine on any two's complement
1742 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
1744 --Andy Dougherty <doughera@lafcol.lafayette.edu>
1747 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
1755 return (I32) I32_MAX;
1757 return (I32) I32_MIN;
1777 return (UV) MY_UV_MAX;
1789 char *fa = strrchr(a,'/');
1790 char *fb = strrchr(b,'/');
1791 struct stat tmpstatbuf1;
1792 struct stat tmpstatbuf2;
1794 #define MAXPATHLEN 1024
1796 char tmpbuf[MAXPATHLEN+1];
1811 strncpy(tmpbuf, a, fa - a);
1812 if (Stat(tmpbuf, &tmpstatbuf1) < 0)
1817 strncpy(tmpbuf, b, fb - b);
1818 if (Stat(tmpbuf, &tmpstatbuf2) < 0)
1820 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
1821 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
1823 #endif /* !HAS_RENAME */
1826 scan_oct(start, len, retlen)
1831 register char *s = start;
1832 register unsigned long retval = 0;
1834 while (len && *s >= '0' && *s <= '7') {
1836 retval |= *s++ - '0';
1839 if (dowarn && len && (*s == '8' || *s == '9'))
1840 warn("Illegal octal digit ignored");
1841 *retlen = s - start;
1846 scan_hex(start, len, retlen)
1851 register char *s = start;
1852 register unsigned long retval = 0;
1855 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
1857 retval |= (tmp - hexdigit) & 15;
1860 *retlen = s - start;
1867 * This hack is to force load of "huge" support from libm.a
1868 * So it is in perl for (say) POSIX to use.
1869 * Needed for SunOS with Sun's 'acc' for example.