3 * Copyright (c) 1991-1999, 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
16 #define PERL_IN_UTIL_C
19 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
24 # define SIG_ERR ((Sighandler_t) -1)
27 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
36 /* Put this after #includes because fork and vfork prototypes may
47 # include <sys/file.h>
51 # include <sys/wait.h>
62 long xcount[MAXXCOUNT];
63 long lastxcount[MAXXCOUNT];
64 long xycount[MAXXCOUNT][MAXYCOUNT];
65 long lastxycount[MAXXCOUNT][MAXYCOUNT];
69 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70 # define FD_CLOEXEC 1 /* NeXT needs this */
73 /* paranoid version of system's malloc() */
75 /* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
82 Perl_safesysmalloc(MEM_SIZE size)
88 PerlIO_printf(Perl_error_log,
89 "Allocation too large: %lx\n", size) FLUSH;
92 #endif /* HAS_64K_LIMIT */
95 Perl_croak_nocontext("panic: malloc");
97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
98 PERL_ALLOC_CHECK(ptr);
99 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
105 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
112 /* paranoid version of system's realloc() */
115 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
119 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
120 Malloc_t PerlMem_realloc();
121 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
125 PerlIO_printf(Perl_error_log,
126 "Reallocation too large: %lx\n", size) FLUSH;
129 #endif /* HAS_64K_LIMIT */
136 return safesysmalloc(size);
139 Perl_croak_nocontext("panic: realloc");
141 ptr = PerlMem_realloc(where,size);
142 PERL_ALLOC_CHECK(ptr);
144 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
145 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
152 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
159 /* safe version of system's free() */
162 Perl_safesysfree(Malloc_t where)
165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
172 /* safe version of system's calloc() */
175 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
181 if (size * count > 0xffff) {
182 PerlIO_printf(Perl_error_log,
183 "Allocation too large: %lx\n", size * count) FLUSH;
186 #endif /* HAS_64K_LIMIT */
188 if ((long)size < 0 || (long)count < 0)
189 Perl_croak_nocontext("panic: calloc");
192 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
193 PERL_ALLOC_CHECK(ptr);
194 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
196 memset((void*)ptr, 0, size);
202 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
211 struct mem_test_strut {
219 # define ALIGN sizeof(struct mem_test_strut)
221 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
222 # define typeof_chunk(ch) \
223 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
224 # define set_typeof_chunk(ch,t) \
225 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
226 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
229 ? ((size) - 1)/8 + 5 \
233 Perl_safexmalloc(I32 x, MEM_SIZE size)
235 register char* where = (char*)safemalloc(size + ALIGN);
238 xycount[x][SIZE_TO_Y(size)]++;
239 set_typeof_chunk(where, x);
240 sizeof_chunk(where) = size;
241 return (Malloc_t)(where + ALIGN);
245 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
247 char *where = (char*)wh;
250 return safexmalloc(0,size);
253 MEM_SIZE old = sizeof_chunk(where - ALIGN);
254 int t = typeof_chunk(where - ALIGN);
255 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
257 xycount[t][SIZE_TO_Y(old)]--;
258 xycount[t][SIZE_TO_Y(size)]++;
259 xcount[t] += size - old;
260 sizeof_chunk(new) = size;
261 return (Malloc_t)(new + ALIGN);
266 Perl_safexfree(Malloc_t wh)
269 char *where = (char*)wh;
275 size = sizeof_chunk(where);
276 x = where[0] + 100 * where[1];
278 xycount[x][SIZE_TO_Y(size)]--;
283 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
285 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
287 xycount[x][SIZE_TO_Y(size)]++;
288 memset((void*)(where + ALIGN), 0, size * count);
289 set_typeof_chunk(where, x);
290 sizeof_chunk(where) = size;
291 return (Malloc_t)(where + ALIGN);
295 S_xstat(pTHX_ int flag)
297 register I32 i, j, total = 0;
298 I32 subtot[MAXYCOUNT];
300 for (j = 0; j < MAXYCOUNT; j++) {
304 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
305 for (i = 0; i < MAXXCOUNT; i++) {
307 for (j = 0; j < MAXYCOUNT; j++) {
308 subtot[j] += xycount[i][j];
311 ? xcount[i] /* Have something */
313 ? xcount[i] != lastxcount[i] /* Changed */
314 : xcount[i] > lastxcount[i])) { /* Growed */
315 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
316 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
317 lastxcount[i] = xcount[i];
318 for (j = 0; j < MAXYCOUNT; j++) {
320 ? xycount[i][j] /* Have something */
322 ? xycount[i][j] != lastxycount[i][j] /* Changed */
323 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
324 PerlIO_printf(Perl_debug_log,"%3ld ",
326 ? xycount[i][j] - lastxycount[i][j]
328 lastxycount[i][j] = xycount[i][j];
330 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
333 PerlIO_printf(Perl_debug_log, "\n");
337 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
338 for (j = 0; j < MAXYCOUNT; j++) {
340 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
342 PerlIO_printf(Perl_debug_log, " . ");
345 PerlIO_printf(Perl_debug_log, "\n");
349 #endif /* LEAKTEST */
351 /* copy a string up to some (non-backslashed) delimiter, if any */
354 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
357 for (tolen = 0; from < fromend; from++, tolen++) {
359 if (from[1] == delim)
368 else if (*from == delim)
379 /* return ptr to little string in big string, NULL if not found */
380 /* This routine was donated by Corey Satten. */
383 Perl_instr(pTHX_ register const char *big, register const char *little)
385 register const char *s, *x;
396 for (x=big,s=little; *s; /**/ ) {
405 return (char*)(big-1);
410 /* same as instr but allow embedded nulls */
413 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
415 register const char *s, *x;
416 register I32 first = *little;
417 register const char *littleend = lend;
419 if (!first && little >= littleend)
421 if (bigend - big < littleend - little)
423 bigend -= littleend - little++;
424 while (big <= bigend) {
427 for (x=big,s=little; s < littleend; /**/ ) {
434 return (char*)(big-1);
439 /* reverse of the above--find last substring */
442 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
444 register const char *bigbeg;
445 register const char *s, *x;
446 register I32 first = *little;
447 register const char *littleend = lend;
449 if (!first && little >= littleend)
450 return (char*)bigend;
452 big = bigend - (littleend - little++);
453 while (big >= bigbeg) {
456 for (x=big+2,s=little; s < littleend; /**/ ) {
463 return (char*)(big+1);
469 * Set up for a new ctype locale.
472 Perl_new_ctype(pTHX_ const char *newctype)
474 #ifdef USE_LOCALE_CTYPE
478 for (i = 0; i < 256; i++) {
480 PL_fold_locale[i] = toLOWER_LC(i);
481 else if (isLOWER_LC(i))
482 PL_fold_locale[i] = toUPPER_LC(i);
484 PL_fold_locale[i] = i;
487 #endif /* USE_LOCALE_CTYPE */
491 * Set up for a new collation locale.
494 Perl_new_collate(pTHX_ const char *newcoll)
496 #ifdef USE_LOCALE_COLLATE
499 if (PL_collation_name) {
501 Safefree(PL_collation_name);
502 PL_collation_name = NULL;
503 PL_collation_standard = TRUE;
504 PL_collxfrm_base = 0;
505 PL_collxfrm_mult = 2;
510 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
512 Safefree(PL_collation_name);
513 PL_collation_name = savepv(newcoll);
514 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
517 /* 2: at most so many chars ('a', 'b'). */
518 /* 50: surely no system expands a char more. */
519 #define XFRMBUFSIZE (2 * 50)
520 char xbuf[XFRMBUFSIZE];
521 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
522 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
523 SSize_t mult = fb - fa;
525 Perl_croak(aTHX_ "strxfrm() gets absurd");
526 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
527 PL_collxfrm_mult = mult;
531 #endif /* USE_LOCALE_COLLATE */
535 Perl_set_numeric_radix(pTHX)
537 #ifdef USE_LOCALE_NUMERIC
538 # ifdef HAS_LOCALECONV
542 if (lc && lc->decimal_point)
543 /* We assume that decimal separator aka the radix
544 * character is always a single character. If it
545 * ever is a string, this needs to be rethunk. */
546 PL_numeric_radix = *lc->decimal_point;
548 PL_numeric_radix = 0;
549 # endif /* HAS_LOCALECONV */
550 #endif /* USE_LOCALE_NUMERIC */
554 * Set up for a new numeric locale.
557 Perl_new_numeric(pTHX_ const char *newnum)
559 #ifdef USE_LOCALE_NUMERIC
562 if (PL_numeric_name) {
563 Safefree(PL_numeric_name);
564 PL_numeric_name = NULL;
565 PL_numeric_standard = TRUE;
566 PL_numeric_local = TRUE;
571 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
572 Safefree(PL_numeric_name);
573 PL_numeric_name = savepv(newnum);
574 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
575 PL_numeric_local = TRUE;
579 #endif /* USE_LOCALE_NUMERIC */
583 Perl_set_numeric_standard(pTHX)
585 #ifdef USE_LOCALE_NUMERIC
587 if (! PL_numeric_standard) {
588 setlocale(LC_NUMERIC, "C");
589 PL_numeric_standard = TRUE;
590 PL_numeric_local = FALSE;
593 #endif /* USE_LOCALE_NUMERIC */
597 Perl_set_numeric_local(pTHX)
599 #ifdef USE_LOCALE_NUMERIC
601 if (! PL_numeric_local) {
602 setlocale(LC_NUMERIC, PL_numeric_name);
603 PL_numeric_standard = FALSE;
604 PL_numeric_local = TRUE;
608 #endif /* USE_LOCALE_NUMERIC */
612 * Initialize locale awareness.
615 Perl_init_i18nl10n(pTHX_ int printwarn)
619 * 1 = set ok or not applicable,
620 * 0 = fallback to C locale,
621 * -1 = fallback to C locale failed
626 #ifdef USE_LOCALE_CTYPE
627 char *curctype = NULL;
628 #endif /* USE_LOCALE_CTYPE */
629 #ifdef USE_LOCALE_COLLATE
630 char *curcoll = NULL;
631 #endif /* USE_LOCALE_COLLATE */
632 #ifdef USE_LOCALE_NUMERIC
634 #endif /* USE_LOCALE_NUMERIC */
636 char *language = PerlEnv_getenv("LANGUAGE");
638 char *lc_all = PerlEnv_getenv("LC_ALL");
639 char *lang = PerlEnv_getenv("LANG");
640 bool setlocale_failure = FALSE;
642 #ifdef LOCALE_ENVIRON_REQUIRED
645 * Ultrix setlocale(..., "") fails if there are no environment
646 * variables from which to get a locale name.
653 if (setlocale(LC_ALL, ""))
656 setlocale_failure = TRUE;
658 if (!setlocale_failure) {
659 #ifdef USE_LOCALE_CTYPE
662 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
664 setlocale_failure = TRUE;
665 #endif /* USE_LOCALE_CTYPE */
666 #ifdef USE_LOCALE_COLLATE
668 setlocale(LC_COLLATE,
669 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
671 setlocale_failure = TRUE;
672 #endif /* USE_LOCALE_COLLATE */
673 #ifdef USE_LOCALE_NUMERIC
675 setlocale(LC_NUMERIC,
676 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
678 setlocale_failure = TRUE;
679 #endif /* USE_LOCALE_NUMERIC */
684 #endif /* !LOCALE_ENVIRON_REQUIRED */
687 if (! setlocale(LC_ALL, ""))
688 setlocale_failure = TRUE;
691 if (!setlocale_failure) {
692 #ifdef USE_LOCALE_CTYPE
693 if (! (curctype = setlocale(LC_CTYPE, "")))
694 setlocale_failure = TRUE;
695 #endif /* USE_LOCALE_CTYPE */
696 #ifdef USE_LOCALE_COLLATE
697 if (! (curcoll = setlocale(LC_COLLATE, "")))
698 setlocale_failure = TRUE;
699 #endif /* USE_LOCALE_COLLATE */
700 #ifdef USE_LOCALE_NUMERIC
701 if (! (curnum = setlocale(LC_NUMERIC, "")))
702 setlocale_failure = TRUE;
703 #endif /* USE_LOCALE_NUMERIC */
706 if (setlocale_failure) {
708 bool locwarn = (printwarn > 1 ||
710 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
715 PerlIO_printf(Perl_error_log,
716 "perl: warning: Setting locale failed.\n");
720 PerlIO_printf(Perl_error_log,
721 "perl: warning: Setting locale failed for the categories:\n\t");
722 #ifdef USE_LOCALE_CTYPE
724 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
725 #endif /* USE_LOCALE_CTYPE */
726 #ifdef USE_LOCALE_COLLATE
728 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
729 #endif /* USE_LOCALE_COLLATE */
730 #ifdef USE_LOCALE_NUMERIC
732 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
733 #endif /* USE_LOCALE_NUMERIC */
734 PerlIO_printf(Perl_error_log, "\n");
738 PerlIO_printf(Perl_error_log,
739 "perl: warning: Please check that your locale settings:\n");
742 PerlIO_printf(Perl_error_log,
743 "\tLANGUAGE = %c%s%c,\n",
744 language ? '"' : '(',
745 language ? language : "unset",
746 language ? '"' : ')');
749 PerlIO_printf(Perl_error_log,
750 "\tLC_ALL = %c%s%c,\n",
752 lc_all ? lc_all : "unset",
757 for (e = environ; *e; e++) {
758 if (strnEQ(*e, "LC_", 3)
759 && strnNE(*e, "LC_ALL=", 7)
760 && (p = strchr(*e, '=')))
761 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
762 (int)(p - *e), *e, p + 1);
766 PerlIO_printf(Perl_error_log,
769 lang ? lang : "unset",
772 PerlIO_printf(Perl_error_log,
773 " are supported and installed on your system.\n");
778 if (setlocale(LC_ALL, "C")) {
780 PerlIO_printf(Perl_error_log,
781 "perl: warning: Falling back to the standard locale (\"C\").\n");
786 PerlIO_printf(Perl_error_log,
787 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
794 #ifdef USE_LOCALE_CTYPE
795 || !(curctype || setlocale(LC_CTYPE, "C"))
796 #endif /* USE_LOCALE_CTYPE */
797 #ifdef USE_LOCALE_COLLATE
798 || !(curcoll || setlocale(LC_COLLATE, "C"))
799 #endif /* USE_LOCALE_COLLATE */
800 #ifdef USE_LOCALE_NUMERIC
801 || !(curnum || setlocale(LC_NUMERIC, "C"))
802 #endif /* USE_LOCALE_NUMERIC */
806 PerlIO_printf(Perl_error_log,
807 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
811 #endif /* ! LC_ALL */
813 #ifdef USE_LOCALE_CTYPE
814 curctype = setlocale(LC_CTYPE, Nullch);
815 #endif /* USE_LOCALE_CTYPE */
816 #ifdef USE_LOCALE_COLLATE
817 curcoll = setlocale(LC_COLLATE, Nullch);
818 #endif /* USE_LOCALE_COLLATE */
819 #ifdef USE_LOCALE_NUMERIC
820 curnum = setlocale(LC_NUMERIC, Nullch);
821 #endif /* USE_LOCALE_NUMERIC */
824 #ifdef USE_LOCALE_CTYPE
826 #endif /* USE_LOCALE_CTYPE */
828 #ifdef USE_LOCALE_COLLATE
829 new_collate(curcoll);
830 #endif /* USE_LOCALE_COLLATE */
832 #ifdef USE_LOCALE_NUMERIC
834 #endif /* USE_LOCALE_NUMERIC */
836 #endif /* USE_LOCALE */
841 /* Backwards compatibility. */
843 Perl_init_i18nl14n(pTHX_ int printwarn)
845 return init_i18nl10n(printwarn);
848 #ifdef USE_LOCALE_COLLATE
851 * mem_collxfrm() is a bit like strxfrm() but with two important
852 * differences. First, it handles embedded NULs. Second, it allocates
853 * a bit more memory than needed for the transformed data itself.
854 * The real transformed data begins at offset sizeof(collationix).
855 * Please see sv_collxfrm() to see how this is used.
858 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
861 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
863 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
864 /* the +1 is for the terminating NUL. */
866 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
867 New(171, xbuf, xAlloc, char);
871 *(U32*)xbuf = PL_collation_ix;
872 xout = sizeof(PL_collation_ix);
873 for (xin = 0; xin < len; ) {
877 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
880 if (xused < xAlloc - xout)
882 xAlloc = (2 * xAlloc) + 1;
883 Renew(xbuf, xAlloc, char);
888 xin += strlen(s + xin) + 1;
891 /* Embedded NULs are understood but silently skipped
892 * because they make no sense in locale collation. */
896 *xlen = xout - sizeof(PL_collation_ix);
905 #endif /* USE_LOCALE_COLLATE */
907 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
909 /* As a space optimization, we do not compile tables for strings of length
910 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
911 special-cased in fbm_instr().
913 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
916 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
925 if (flags & FBMcf_TAIL)
926 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
927 s = (U8*)SvPV_force(sv, len);
928 (void)SvUPGRADE(sv, SVt_PVBM);
929 if (len == 0) /* TAIL might be on on a zero-length string. */
939 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
940 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
941 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
942 memset((void*)table, mlen, 256);
943 table[-1] = (U8)flags;
945 sb = s - mlen + 1; /* first char (maybe) */
947 if (table[*s] == mlen)
952 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
955 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
956 for (i = 0; i < len; i++) {
957 if (PL_freq[s[i]] < frequency) {
959 frequency = PL_freq[s[i]];
962 BmRARE(sv) = s[rarest];
963 BmPREVIOUS(sv) = rarest;
964 BmUSEFUL(sv) = 100; /* Initial value */
965 if (flags & FBMcf_TAIL)
967 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
968 BmRARE(sv),BmPREVIOUS(sv)));
971 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
972 /* If SvTAIL is actually due to \Z or \z, this gives false positives
976 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
978 register unsigned char *s;
980 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
981 register STRLEN littlelen = l;
982 register I32 multiline = flags & FBMrf_MULTILINE;
984 if (bigend - big < littlelen) {
986 if ( SvTAIL(littlestr)
987 && (bigend - big == littlelen - 1)
989 || *big == *little && memEQ(big, little, littlelen - 1)))
994 if (littlelen <= 2) { /* Special-cased */
997 if (littlelen == 1) {
998 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
999 /* Know that bigend != big. */
1000 if (bigend[-1] == '\n')
1001 return (char *)(bigend - 1);
1002 return (char *) bigend;
1005 while (s < bigend) {
1010 if (SvTAIL(littlestr))
1011 return (char *) bigend;
1015 return (char*)big; /* Cannot be SvTAIL! */
1017 /* littlelen is 2 */
1018 if (SvTAIL(littlestr) && !multiline) {
1019 if (bigend[-1] == '\n' && bigend[-2] == *little)
1020 return (char*)bigend - 2;
1021 if (bigend[-1] == *little)
1022 return (char*)bigend - 1;
1026 /* This should be better than FBM if c1 == c2, and almost
1027 as good otherwise: maybe better since we do less indirection.
1028 And we save a lot of memory by caching no table. */
1029 register unsigned char c1 = little[0];
1030 register unsigned char c2 = little[1];
1035 while (s <= bigend) {
1038 return (char*)s - 1;
1045 goto check_1char_anchor;
1056 goto check_1char_anchor;
1059 while (s <= bigend) {
1062 return (char*)s - 1;
1064 goto check_1char_anchor;
1073 check_1char_anchor: /* One char and anchor! */
1074 if (SvTAIL(littlestr) && (*bigend == *little))
1075 return (char *)bigend; /* bigend is already decremented. */
1078 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1079 s = bigend - littlelen;
1080 if (s >= big && bigend[-1] == '\n' && *s == *little
1081 /* Automatically of length > 2 */
1082 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1084 return (char*)s; /* how sweet it is */
1087 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1089 return (char*)s + 1; /* how sweet it is */
1093 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1094 char *b = ninstr((char*)big,(char*)bigend,
1095 (char*)little, (char*)little + littlelen);
1097 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1098 /* Chop \n from littlestr: */
1099 s = bigend - littlelen + 1;
1101 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1110 { /* Do actual FBM. */
1111 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1112 register unsigned char *oldlittle;
1114 if (littlelen > bigend - big)
1116 --littlelen; /* Last char found by table lookup */
1118 s = big + littlelen;
1119 little += littlelen; /* last char */
1126 if ((tmp = table[*s])) {
1128 if (bigend - s > tmp) {
1134 if ((s += tmp) < bigend)
1139 else { /* less expensive than calling strncmp() */
1140 register unsigned char *olds = s;
1145 if (*--s == *--little)
1148 s = olds + 1; /* here we pay the price for failure */
1150 if (s < bigend) /* fake up continue to outer loop */
1158 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1159 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1160 return (char*)bigend - littlelen;
1165 /* start_shift, end_shift are positive quantities which give offsets
1166 of ends of some substring of bigstr.
1167 If `last' we want the last occurence.
1168 old_posp is the way of communication between consequent calls if
1169 the next call needs to find the .
1170 The initial *old_posp should be -1.
1172 Note that we take into account SvTAIL, so one can get extra
1173 optimizations if _ALL flag is set.
1176 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1177 if PL_multiline. In fact if !PL_multiline the autoritative answer
1178 is not supported yet. */
1181 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1184 register unsigned char *s, *x;
1185 register unsigned char *big;
1187 register I32 previous;
1189 register unsigned char *little;
1190 register I32 stop_pos;
1191 register unsigned char *littleend;
1195 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1196 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1198 if ( BmRARE(littlestr) == '\n'
1199 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1200 little = (unsigned char *)(SvPVX(littlestr));
1201 littleend = little + SvCUR(littlestr);
1208 little = (unsigned char *)(SvPVX(littlestr));
1209 littleend = little + SvCUR(littlestr);
1211 /* The value of pos we can start at: */
1212 previous = BmPREVIOUS(littlestr);
1213 big = (unsigned char *)(SvPVX(bigstr));
1214 /* The value of pos we can stop at: */
1215 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1216 if (previous + start_shift > stop_pos) {
1217 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1221 while (pos < previous + start_shift) {
1222 if (!(pos += PL_screamnext[pos]))
1227 if (pos >= stop_pos) break;
1228 if (big[pos-previous] != first)
1230 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1236 if (s == littleend) {
1238 if (!last) return (char *)(big+pos-previous);
1241 } while ( pos += PL_screamnext[pos] );
1242 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1243 #else /* !POINTERRIGOR */
1246 if (pos >= stop_pos) break;
1247 if (big[pos] != first)
1249 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1255 if (s == littleend) {
1257 if (!last) return (char *)(big+pos);
1260 } while ( pos += PL_screamnext[pos] );
1262 return (char *)(big+(*old_posp));
1263 #endif /* POINTERRIGOR */
1265 if (!SvTAIL(littlestr) || (end_shift > 0))
1267 /* Ignore the trailing "\n". This code is not microoptimized */
1268 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1269 stop_pos = littleend - little; /* Actual littlestr len */
1274 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1280 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1282 register U8 *a = (U8 *)s1;
1283 register U8 *b = (U8 *)s2;
1285 if (*a != *b && *a != PL_fold[*b])
1293 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1295 register U8 *a = (U8 *)s1;
1296 register U8 *b = (U8 *)s2;
1298 if (*a != *b && *a != PL_fold_locale[*b])
1305 /* copy a string to a safe spot */
1308 Perl_savepv(pTHX_ const char *sv)
1310 register char *newaddr;
1312 New(902,newaddr,strlen(sv)+1,char);
1313 (void)strcpy(newaddr,sv);
1317 /* same thing but with a known length */
1320 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1322 register char *newaddr;
1324 New(903,newaddr,len+1,char);
1325 Copy(sv,newaddr,len,char); /* might not be null terminated */
1326 newaddr[len] = '\0'; /* is now */
1330 /* the SV for Perl_form() and mess() is not kept in an arena */
1340 return sv_2mortal(newSVpvn("",0));
1345 /* Create as PVMG now, to avoid any upgrading later */
1346 New(905, sv, 1, SV);
1347 Newz(905, any, 1, XPVMG);
1348 SvFLAGS(sv) = SVt_PVMG;
1349 SvANY(sv) = (void*)any;
1350 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1355 #if defined(PERL_IMPLICIT_CONTEXT)
1357 Perl_form_nocontext(const char* pat, ...)
1362 va_start(args, pat);
1363 retval = vform(pat, &args);
1367 #endif /* PERL_IMPLICIT_CONTEXT */
1370 Perl_form(pTHX_ const char* pat, ...)
1374 va_start(args, pat);
1375 retval = vform(pat, &args);
1381 Perl_vform(pTHX_ const char *pat, va_list *args)
1383 SV *sv = mess_alloc();
1384 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1388 #if defined(PERL_IMPLICIT_CONTEXT)
1390 Perl_mess_nocontext(const char *pat, ...)
1395 va_start(args, pat);
1396 retval = vmess(pat, &args);
1400 #endif /* PERL_IMPLICIT_CONTEXT */
1403 Perl_mess(pTHX_ const char *pat, ...)
1407 va_start(args, pat);
1408 retval = vmess(pat, &args);
1414 Perl_vmess(pTHX_ const char *pat, va_list *args)
1416 SV *sv = mess_alloc();
1417 static char dgd[] = " during global destruction.\n";
1419 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1420 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1422 if (CopLINE(PL_curcop))
1423 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1424 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1425 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1426 bool line_mode = (RsSIMPLE(PL_rs) &&
1427 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1428 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1429 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1430 line_mode ? "line" : "chunk",
1431 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1435 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1437 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1443 Perl_vdie(pTHX_ const char* pat, va_list *args)
1447 int was_in_eval = PL_in_eval;
1454 DEBUG_S(PerlIO_printf(Perl_debug_log,
1455 "%p: die: curstack = %p, mainstack = %p\n",
1456 thr, PL_curstack, PL_mainstack));
1459 msv = vmess(pat, args);
1460 if (PL_errors && SvCUR(PL_errors)) {
1461 sv_catsv(PL_errors, msv);
1462 message = SvPV(PL_errors, msglen);
1463 SvCUR_set(PL_errors, 0);
1466 message = SvPV(msv,msglen);
1472 DEBUG_S(PerlIO_printf(Perl_debug_log,
1473 "%p: die: message = %s\ndiehook = %p\n",
1474 thr, message, PL_diehook));
1476 /* sv_2cv might call Perl_croak() */
1477 SV *olddiehook = PL_diehook;
1479 SAVESPTR(PL_diehook);
1480 PL_diehook = Nullsv;
1481 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1483 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1489 msg = newSVpvn(message, msglen);
1497 PUSHSTACKi(PERLSI_DIEHOOK);
1501 call_sv((SV*)cv, G_DISCARD);
1507 PL_restartop = die_where(message, msglen);
1508 DEBUG_S(PerlIO_printf(Perl_debug_log,
1509 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1510 thr, PL_restartop, was_in_eval, PL_top_env));
1511 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1513 return PL_restartop;
1516 #if defined(PERL_IMPLICIT_CONTEXT)
1518 Perl_die_nocontext(const char* pat, ...)
1523 va_start(args, pat);
1524 o = vdie(pat, &args);
1528 #endif /* PERL_IMPLICIT_CONTEXT */
1531 Perl_die(pTHX_ const char* pat, ...)
1535 va_start(args, pat);
1536 o = vdie(pat, &args);
1542 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1552 msv = vmess(pat, args);
1553 if (PL_errors && SvCUR(PL_errors)) {
1554 sv_catsv(PL_errors, msv);
1555 message = SvPV(PL_errors, msglen);
1556 SvCUR_set(PL_errors, 0);
1559 message = SvPV(msv,msglen);
1561 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1562 PTR2UV(thr), message));
1565 /* sv_2cv might call Perl_croak() */
1566 SV *olddiehook = PL_diehook;
1568 SAVESPTR(PL_diehook);
1569 PL_diehook = Nullsv;
1570 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1572 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1577 msg = newSVpvn(message, msglen);
1581 PUSHSTACKi(PERLSI_DIEHOOK);
1585 call_sv((SV*)cv, G_DISCARD);
1591 PL_restartop = die_where(message, msglen);
1596 /* SFIO can really mess with your errno */
1599 PerlIO *serr = Perl_error_log;
1601 PerlIO_write(serr, message, msglen);
1602 (void)PerlIO_flush(serr);
1610 #if defined(PERL_IMPLICIT_CONTEXT)
1612 Perl_croak_nocontext(const char *pat, ...)
1616 va_start(args, pat);
1621 #endif /* PERL_IMPLICIT_CONTEXT */
1624 Perl_croak(pTHX_ const char *pat, ...)
1627 va_start(args, pat);
1634 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1643 msv = vmess(pat, args);
1644 message = SvPV(msv, msglen);
1647 /* sv_2cv might call Perl_warn() */
1649 SV *oldwarnhook = PL_warnhook;
1651 SAVESPTR(PL_warnhook);
1652 PL_warnhook = Nullsv;
1653 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1655 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1660 msg = newSVpvn(message, msglen);
1664 PUSHSTACKi(PERLSI_WARNHOOK);
1668 call_sv((SV*)cv, G_DISCARD);
1675 PerlIO *serr = Perl_error_log;
1677 PerlIO_write(serr, message, msglen);
1679 DEBUG_L(*message == '!'
1680 ? (xstat(message[1]=='!'
1681 ? (message[2]=='!' ? 2 : 1)
1686 (void)PerlIO_flush(serr);
1690 #if defined(PERL_IMPLICIT_CONTEXT)
1692 Perl_warn_nocontext(const char *pat, ...)
1696 va_start(args, pat);
1700 #endif /* PERL_IMPLICIT_CONTEXT */
1703 Perl_warn(pTHX_ const char *pat, ...)
1706 va_start(args, pat);
1711 #if defined(PERL_IMPLICIT_CONTEXT)
1713 Perl_warner_nocontext(U32 err, const char *pat, ...)
1717 va_start(args, pat);
1718 vwarner(err, pat, &args);
1721 #endif /* PERL_IMPLICIT_CONTEXT */
1724 Perl_warner(pTHX_ U32 err, const char* pat,...)
1727 va_start(args, pat);
1728 vwarner(err, pat, &args);
1733 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1743 msv = vmess(pat, args);
1744 message = SvPV(msv, msglen);
1748 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1749 #endif /* USE_THREADS */
1751 /* sv_2cv might call Perl_croak() */
1752 SV *olddiehook = PL_diehook;
1754 SAVESPTR(PL_diehook);
1755 PL_diehook = Nullsv;
1756 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1758 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1763 msg = newSVpvn(message, msglen);
1770 call_sv((SV*)cv, G_DISCARD);
1776 PL_restartop = die_where(message, msglen);
1780 PerlIO *serr = Perl_error_log;
1781 PerlIO_write(serr, message, msglen);
1782 (void)PerlIO_flush(serr);
1789 /* sv_2cv might call Perl_warn() */
1791 SV *oldwarnhook = PL_warnhook;
1793 SAVESPTR(PL_warnhook);
1794 PL_warnhook = Nullsv;
1795 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1797 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1802 msg = newSVpvn(message, msglen);
1809 call_sv((SV*)cv, G_DISCARD);
1816 PerlIO *serr = Perl_error_log;
1817 PerlIO_write(serr, message, msglen);
1821 (void)PerlIO_flush(serr);
1826 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1827 #if !defined(WIN32) && !defined(CYGWIN)
1829 Perl_my_setenv(pTHX_ char *nam, char *val)
1831 #ifndef PERL_USE_SAFE_PUTENV
1832 /* most putenv()s leak, so we manipulate environ directly */
1833 register I32 i=setenv_getix(nam); /* where does it go? */
1835 if (environ == PL_origenviron) { /* need we copy environment? */
1841 for (max = i; environ[max]; max++) ;
1842 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1843 for (j=0; j<max; j++) { /* copy environment */
1844 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1845 strcpy(tmpenv[j], environ[j]);
1847 tmpenv[max] = Nullch;
1848 environ = tmpenv; /* tell exec where it is now */
1851 safesysfree(environ[i]);
1852 while (environ[i]) {
1853 environ[i] = environ[i+1];
1858 if (!environ[i]) { /* does not exist yet */
1859 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1860 environ[i+1] = Nullch; /* make sure it's null terminated */
1863 safesysfree(environ[i]);
1864 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1866 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1868 #else /* PERL_USE_SAFE_PUTENV */
1871 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1872 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1873 (void)putenv(new_env);
1874 #endif /* PERL_USE_SAFE_PUTENV */
1877 #else /* WIN32 || CYGWIN */
1880 * Save environ of perl.exe, currently Cygwin links in separate environ's
1881 * for each exe/dll. Probably should be a member of impure_ptr.
1883 static char ***Perl_main_environ;
1886 Perl_my_setenv_init(char ***penviron)
1888 Perl_main_environ = penviron;
1892 my_setenv(char *nam, char *val)
1894 /* You can not directly manipulate the environ[] array because
1895 * the routines do some additional work that syncs the Cygwin
1896 * environment with the Windows environment.
1898 char *oldstr = environ[setenv_getix(nam)];
1907 setenv(nam, val, 1);
1908 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1909 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1912 #else /* if WIN32 */
1915 Perl_my_setenv(pTHX_ char *nam,char *val)
1918 #ifdef USE_WIN32_RTL_ENV
1920 register char *envstr;
1921 STRLEN namlen = strlen(nam);
1923 char *oldstr = environ[setenv_getix(nam)];
1925 /* putenv() has totally broken semantics in both the Borland
1926 * and Microsoft CRTLs. They either store the passed pointer in
1927 * the environment without making a copy, or make a copy and don't
1928 * free it. And on top of that, they dont free() old entries that
1929 * are being replaced/deleted. This means the caller must
1930 * free any old entries somehow, or we end up with a memory
1931 * leak every time my_setenv() is called. One might think
1932 * one could directly manipulate environ[], like the UNIX code
1933 * above, but direct changes to environ are not allowed when
1934 * calling putenv(), since the RTLs maintain an internal
1935 * *copy* of environ[]. Bad, bad, *bad* stink.
1946 vallen = strlen(val);
1947 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
1948 (void)sprintf(envstr,"%s=%s",nam,val);
1949 (void)PerlEnv_putenv(envstr);
1951 safesysfree(oldstr);
1953 safesysfree(envstr); /* MSVCRT leaks without this */
1956 #else /* !USE_WIN32_RTL_ENV */
1958 register char *envstr;
1959 STRLEN len = strlen(nam) + 3;
1964 New(904, envstr, len, char);
1965 (void)sprintf(envstr,"%s=%s",nam,val);
1966 (void)PerlEnv_putenv(envstr);
1976 Perl_setenv_getix(pTHX_ char *nam)
1978 register I32 i, len = strlen(nam);
1980 for (i = 0; environ[i]; i++) {
1983 strnicmp(environ[i],nam,len) == 0
1985 strnEQ(environ[i],nam,len)
1987 && environ[i][len] == '=')
1988 break; /* strnEQ must come first to avoid */
1989 } /* potential SEGV's */
1995 #ifdef UNLINK_ALL_VERSIONS
1997 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2001 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2006 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2008 Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
2012 if (from - to >= 0) {
2020 *(--to) = *(--from);
2028 Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
2038 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2040 Perl_my_bzero(pTHX_ register char *loc, register I32 len)
2050 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2052 Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
2054 register U8 *a = (U8 *)s1;
2055 register U8 *b = (U8 *)s2;
2059 if (tmp = *a++ - *b++)
2064 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2068 #ifdef USE_CHAR_VSPRINTF
2073 vsprintf(char *dest, const char *pat, char *args)
2077 fakebuf._ptr = dest;
2078 fakebuf._cnt = 32767;
2082 fakebuf._flag = _IOWRT|_IOSTRG;
2083 _doprnt(pat, args, &fakebuf); /* what a kludge */
2084 (void)putc('\0', &fakebuf);
2085 #ifdef USE_CHAR_VSPRINTF
2088 return 0; /* perl doesn't use return value */
2092 #endif /* HAS_VPRINTF */
2095 #if BYTEORDER != 0x4321
2097 Perl_my_swap(pTHX_ short s)
2099 #if (BYTEORDER & 1) == 0
2102 result = ((s & 255) << 8) + ((s >> 8) & 255);
2110 Perl_my_htonl(pTHX_ long l)
2114 char c[sizeof(long)];
2117 #if BYTEORDER == 0x1234
2118 u.c[0] = (l >> 24) & 255;
2119 u.c[1] = (l >> 16) & 255;
2120 u.c[2] = (l >> 8) & 255;
2124 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2125 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2130 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2131 u.c[o & 0xf] = (l >> s) & 255;
2139 Perl_my_ntohl(pTHX_ long l)
2143 char c[sizeof(long)];
2146 #if BYTEORDER == 0x1234
2147 u.c[0] = (l >> 24) & 255;
2148 u.c[1] = (l >> 16) & 255;
2149 u.c[2] = (l >> 8) & 255;
2153 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2154 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2161 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2162 l |= (u.c[o & 0xf] & 255) << s;
2169 #endif /* BYTEORDER != 0x4321 */
2173 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2174 * If these functions are defined,
2175 * the BYTEORDER is neither 0x1234 nor 0x4321.
2176 * However, this is not assumed.
2180 #define HTOV(name,type) \
2182 name (register type n) \
2186 char c[sizeof(type)]; \
2190 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2191 u.c[i] = (n >> s) & 0xFF; \
2196 #define VTOH(name,type) \
2198 name (register type n) \
2202 char c[sizeof(type)]; \
2208 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2209 n += (u.c[i] & 0xFF) << s; \
2214 #if defined(HAS_HTOVS) && !defined(htovs)
2217 #if defined(HAS_HTOVL) && !defined(htovl)
2220 #if defined(HAS_VTOHS) && !defined(vtohs)
2223 #if defined(HAS_VTOHL) && !defined(vtohl)
2227 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2228 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2230 Perl_my_popen(pTHX_ char *cmd, char *mode)
2233 register I32 This, that;
2236 I32 doexec = strNE(cmd,"-");
2240 PERL_FLUSHALL_FOR_CHILD;
2243 return my_syspopen(cmd,mode);
2246 This = (*mode == 'w');
2248 if (doexec && PL_tainting) {
2250 taint_proper("Insecure %s%s", "EXEC");
2252 if (PerlProc_pipe(p) < 0)
2254 if (doexec && PerlProc_pipe(pp) >= 0)
2256 while ((pid = (doexec?vfork():fork())) < 0) {
2257 if (errno != EAGAIN) {
2258 PerlLIO_close(p[This]);
2260 PerlLIO_close(pp[0]);
2261 PerlLIO_close(pp[1]);
2264 Perl_croak(aTHX_ "Can't fork");
2276 PerlLIO_close(p[THAT]);
2278 PerlLIO_close(pp[0]);
2279 #if defined(HAS_FCNTL) && defined(F_SETFD)
2280 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2283 if (p[THIS] != (*mode == 'r')) {
2284 PerlLIO_dup2(p[THIS], *mode == 'r');
2285 PerlLIO_close(p[THIS]);
2289 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2295 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2299 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2302 #endif /* defined OS2 */
2304 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2305 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2307 hv_clear(PL_pidstatus); /* we have no children */
2312 do_execfree(); /* free any memory malloced by child on vfork */
2313 PerlLIO_close(p[that]);
2315 PerlLIO_close(pp[1]);
2316 if (p[that] < p[This]) {
2317 PerlLIO_dup2(p[This], p[that]);
2318 PerlLIO_close(p[This]);
2321 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2322 (void)SvUPGRADE(sv,SVt_IV);
2324 PL_forkprocess = pid;
2325 if (did_pipes && pid > 0) {
2329 while (n < sizeof(int)) {
2330 n1 = PerlLIO_read(pp[0],
2331 (void*)(((char*)&errkid)+n),
2337 PerlLIO_close(pp[0]);
2339 if (n) { /* Error */
2340 if (n != sizeof(int))
2341 Perl_croak(aTHX_ "panic: kid popen errno read");
2342 errno = errkid; /* Propagate errno from kid */
2347 PerlLIO_close(pp[0]);
2348 return PerlIO_fdopen(p[This], mode);
2351 #if defined(atarist) || defined(DJGPP)
2354 Perl_my_popen(pTHX_ char *cmd, char *mode)
2356 /* Needs work for PerlIO ! */
2357 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2358 PERL_FLUSHALL_FOR_CHILD;
2359 return popen(PerlIO_exportFILE(cmd, 0), mode);
2363 #endif /* !DOSISH */
2367 Perl_dump_fds(pTHX_ char *s)
2370 struct stat tmpstatbuf;
2372 PerlIO_printf(Perl_debug_log,"%s", s);
2373 for (fd = 0; fd < 32; fd++) {
2374 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2375 PerlIO_printf(Perl_debug_log," %d",fd);
2377 PerlIO_printf(Perl_debug_log,"\n");
2379 #endif /* DUMP_FDS */
2383 dup2(int oldfd, int newfd)
2385 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2388 PerlLIO_close(newfd);
2389 return fcntl(oldfd, F_DUPFD, newfd);
2391 #define DUP2_MAX_FDS 256
2392 int fdtmp[DUP2_MAX_FDS];
2398 PerlLIO_close(newfd);
2399 /* good enough for low fd's... */
2400 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2401 if (fdx >= DUP2_MAX_FDS) {
2409 PerlLIO_close(fdtmp[--fdx]);
2416 #ifdef HAS_SIGACTION
2419 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2421 struct sigaction act, oact;
2423 act.sa_handler = handler;
2424 sigemptyset(&act.sa_mask);
2427 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2430 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2431 act.sa_flags |= SA_NOCLDWAIT;
2433 if (sigaction(signo, &act, &oact) == -1)
2436 return oact.sa_handler;
2440 Perl_rsignal_state(pTHX_ int signo)
2442 struct sigaction oact;
2444 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2447 return oact.sa_handler;
2451 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2453 struct sigaction act;
2455 act.sa_handler = handler;
2456 sigemptyset(&act.sa_mask);
2459 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2462 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2463 act.sa_flags |= SA_NOCLDWAIT;
2465 return sigaction(signo, &act, save);
2469 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2471 return sigaction(signo, save, (struct sigaction *)NULL);
2474 #else /* !HAS_SIGACTION */
2477 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2479 return PerlProc_signal(signo, handler);
2482 static int sig_trapped;
2492 Perl_rsignal_state(pTHX_ int signo)
2494 Sighandler_t oldsig;
2497 oldsig = PerlProc_signal(signo, sig_trap);
2498 PerlProc_signal(signo, oldsig);
2500 PerlProc_kill(PerlProc_getpid(), signo);
2505 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2507 *save = PerlProc_signal(signo, handler);
2508 return (*save == SIG_ERR) ? -1 : 0;
2512 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2514 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2517 #endif /* !HAS_SIGACTION */
2519 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2520 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2522 Perl_my_pclose(pTHX_ PerlIO *ptr)
2524 Sigsave_t hstat, istat, qstat;
2532 int saved_vaxc_errno;
2535 int saved_win32_errno;
2538 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2541 *svp = &PL_sv_undef;
2543 if (pid == -1) { /* Opened by popen. */
2544 return my_syspclose(ptr);
2547 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2548 saved_errno = errno;
2550 saved_vaxc_errno = vaxc$errno;
2553 saved_win32_errno = GetLastError();
2557 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2559 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2560 rsignal_save(SIGINT, SIG_IGN, &istat);
2561 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2563 pid2 = wait4pid(pid, &status, 0);
2564 } while (pid2 == -1 && errno == EINTR);
2565 rsignal_restore(SIGHUP, &hstat);
2566 rsignal_restore(SIGINT, &istat);
2567 rsignal_restore(SIGQUIT, &qstat);
2569 SETERRNO(saved_errno, saved_vaxc_errno);
2572 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2574 #endif /* !DOSISH */
2576 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2578 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2582 char spid[TYPE_CHARS(int)];
2587 sprintf(spid, "%"IVdf, (IV)pid);
2588 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2589 if (svp && *svp != &PL_sv_undef) {
2590 *statusp = SvIVX(*svp);
2591 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2598 hv_iterinit(PL_pidstatus);
2599 if (entry = hv_iternext(PL_pidstatus)) {
2600 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2601 sv = hv_iterval(PL_pidstatus,entry);
2602 *statusp = SvIVX(sv);
2603 sprintf(spid, "%"IVdf, (IV)pid);
2604 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2609 # ifdef HAS_WAITPID_RUNTIME
2610 if (!HAS_WAITPID_RUNTIME)
2613 return PerlProc_waitpid(pid,statusp,flags);
2615 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2616 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2618 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2623 Perl_croak(aTHX_ "Can't do waitpid with flags");
2625 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2626 pidgone(result,*statusp);
2634 #endif /* !DOSISH || OS2 || WIN32 */
2638 Perl_pidgone(pTHX_ Pid_t pid, int status)
2641 char spid[TYPE_CHARS(int)];
2643 sprintf(spid, "%"IVdf, (IV)pid);
2644 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2645 (void)SvUPGRADE(sv,SVt_IV);
2650 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2653 int /* Cannot prototype with I32
2655 my_syspclose(PerlIO *ptr)
2658 Perl_my_pclose(pTHX_ PerlIO *ptr)
2661 /* Needs work for PerlIO ! */
2662 FILE *f = PerlIO_findFILE(ptr);
2663 I32 result = pclose(f);
2665 result = (result << 8) & 0xff00;
2667 PerlIO_releaseFILE(ptr,f);
2673 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2676 register const char *frombase = from;
2679 register const char c = *from;
2684 while (count-- > 0) {
2685 for (todo = len; todo > 0; todo--) {
2693 Perl_cast_ulong(pTHX_ NV f)
2698 # define BIGDOUBLE 2147483648.0
2700 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2703 return (unsigned long)f;
2705 return (unsigned long)along;
2709 /* Unfortunately, on some systems the cast_uv() function doesn't
2710 work with the system-supplied definition of ULONG_MAX. The
2711 comparison (f >= ULONG_MAX) always comes out true. It must be a
2712 problem with the compiler constant folding.
2714 In any case, this workaround should be fine on any two's complement
2715 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2717 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2720 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2722 -- Kenneth Albanowski <kjahds@kjahds.com>
2726 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2730 Perl_cast_i32(pTHX_ NV f)
2733 return (I32) I32_MAX;
2735 return (I32) I32_MIN;
2740 Perl_cast_iv(pTHX_ NV f)
2745 if (f >= (NV)UV_MAX)
2756 Perl_cast_uv(pTHX_ NV f)
2759 return (UV) MY_UV_MAX;
2773 Perl_same_dirent(pTHX_ char *a, char *b)
2775 char *fa = strrchr(a,'/');
2776 char *fb = strrchr(b,'/');
2777 struct stat tmpstatbuf1;
2778 struct stat tmpstatbuf2;
2779 SV *tmpsv = sv_newmortal();
2792 sv_setpv(tmpsv, ".");
2794 sv_setpvn(tmpsv, a, fa - a);
2795 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2798 sv_setpv(tmpsv, ".");
2800 sv_setpvn(tmpsv, b, fb - b);
2801 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2803 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2804 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2806 #endif /* !HAS_RENAME */
2809 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2811 register char *s = start;
2812 register NV rnv = 0.0;
2813 register UV ruv = 0;
2814 register bool seenb = FALSE;
2815 register bool overflowed = FALSE;
2817 for (; len-- && *s; s++) {
2818 if (!(*s == '0' || *s == '1')) {
2820 continue; /* Note: does not check for __ and the like. */
2821 if (seenb == FALSE && *s == 'b' && ruv == 0) {
2822 /* Disallow 0bbb0b0bbb... */
2828 if (ckWARN(WARN_DIGIT))
2829 Perl_warner(aTHX_ WARN_DIGIT,
2830 "Illegal binary digit '%c' ignored", *s);
2835 register UV xuv = ruv << 1;
2837 if ((xuv >> 1) != ruv) {
2841 if (ckWARN_d(WARN_OVERFLOW))
2842 Perl_warner(aTHX_ WARN_OVERFLOW,
2843 "Integer overflow in binary number");
2845 ruv = xuv | (*s - '0');
2849 /* If an NV has not enough bits in its mantissa to
2850 * represent an UV this summing of small low-order numbers
2851 * is a waste of time (because the NV cannot preserve
2852 * the low-order bits anyway): we could just remember when
2853 * did we overflow and in the end just multiply rnv by the
2860 if ( ( overflowed && rnv > 4294967295.0)
2862 || (!overflowed && ruv > 0xffffffff )
2866 if (ckWARN(WARN_PORTABLE))
2867 Perl_warner(aTHX_ WARN_PORTABLE,
2868 "Binary number > 0b11111111111111111111111111111111 non-portable");
2870 *retlen = s - start;
2875 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2877 register char *s = start;
2878 register NV rnv = 0.0;
2879 register UV ruv = 0;
2880 register bool overflowed = FALSE;
2882 for (; len-- && *s; s++) {
2883 if (!(*s >= '0' && *s <= '7')) {
2885 continue; /* Note: does not check for __ and the like. */
2887 /* Allow \octal to work the DWIM way (that is, stop scanning
2888 * as soon as non-octal characters are seen, complain only iff
2889 * someone seems to want to use the digits eight and nine). */
2890 if (*s == '8' || *s == '9') {
2892 if (ckWARN(WARN_DIGIT))
2893 Perl_warner(aTHX_ WARN_DIGIT,
2894 "Illegal octal digit '%c' ignored", *s);
2900 register UV xuv = ruv << 3;
2902 if ((xuv >> 3) != ruv) {
2906 if (ckWARN_d(WARN_OVERFLOW))
2907 Perl_warner(aTHX_ WARN_OVERFLOW,
2908 "Integer overflow in octal number");
2910 ruv = xuv | (*s - '0');
2914 /* If an NV has not enough bits in its mantissa to
2915 * represent an UV this summing of small low-order numbers
2916 * is a waste of time (because the NV cannot preserve
2917 * the low-order bits anyway): we could just remember when
2918 * did we overflow and in the end just multiply rnv by the
2919 * right amount of 8-tuples. */
2920 rnv += (NV)(*s - '0');
2925 if ( ( overflowed && rnv > 4294967295.0)
2927 || (!overflowed && ruv > 0xffffffff )
2931 if (ckWARN(WARN_PORTABLE))
2932 Perl_warner(aTHX_ WARN_PORTABLE,
2933 "Octal number > 037777777777 non-portable");
2935 *retlen = s - start;
2940 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
2942 register char *s = start;
2943 register NV rnv = 0.0;
2944 register UV ruv = 0;
2945 register bool seenx = FALSE;
2946 register bool overflowed = FALSE;
2949 for (; len-- && *s; s++) {
2950 hexdigit = strchr((char *) PL_hexdigit, *s);
2953 continue; /* Note: does not check for __ and the like. */
2954 if (seenx == FALSE && *s == 'x' && ruv == 0) {
2955 /* Disallow 0xxx0x0xxx... */
2961 if (ckWARN(WARN_DIGIT))
2962 Perl_warner(aTHX_ WARN_DIGIT,
2963 "Illegal hexadecimal digit '%c' ignored", *s);
2968 register UV xuv = ruv << 4;
2970 if ((xuv >> 4) != ruv) {
2974 if (ckWARN_d(WARN_OVERFLOW))
2975 Perl_warner(aTHX_ WARN_OVERFLOW,
2976 "Integer overflow in hexadecimal number");
2978 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2982 /* If an NV has not enough bits in its mantissa to
2983 * represent an UV this summing of small low-order numbers
2984 * is a waste of time (because the NV cannot preserve
2985 * the low-order bits anyway): we could just remember when
2986 * did we overflow and in the end just multiply rnv by the
2987 * right amount of 16-tuples. */
2988 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2993 if ( ( overflowed && rnv > 4294967295.0)
2995 || (!overflowed && ruv > 0xffffffff )
2999 if (ckWARN(WARN_PORTABLE))
3000 Perl_warner(aTHX_ WARN_PORTABLE,
3001 "Hexadecimal number > 0xffffffff non-portable");
3003 *retlen = s - start;
3008 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3011 char *xfound = Nullch;
3012 char *xfailed = Nullch;
3013 char tmpbuf[MAXPATHLEN];
3017 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3018 # define SEARCH_EXTS ".bat", ".cmd", NULL
3019 # define MAX_EXT_LEN 4
3022 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3023 # define MAX_EXT_LEN 4
3026 # define SEARCH_EXTS ".pl", ".com", NULL
3027 # define MAX_EXT_LEN 4
3029 /* additional extensions to try in each dir if scriptname not found */
3031 char *exts[] = { SEARCH_EXTS };
3032 char **ext = search_ext ? search_ext : exts;
3033 int extidx = 0, i = 0;
3034 char *curext = Nullch;
3036 # define MAX_EXT_LEN 0
3040 * If dosearch is true and if scriptname does not contain path
3041 * delimiters, search the PATH for scriptname.
3043 * If SEARCH_EXTS is also defined, will look for each
3044 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3045 * while searching the PATH.
3047 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3048 * proceeds as follows:
3049 * If DOSISH or VMSISH:
3050 * + look for ./scriptname{,.foo,.bar}
3051 * + search the PATH for scriptname{,.foo,.bar}
3054 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3055 * this will not look in '.' if it's not in the PATH)
3060 # ifdef ALWAYS_DEFTYPES
3061 len = strlen(scriptname);
3062 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3063 int hasdir, idx = 0, deftypes = 1;
3066 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3069 int hasdir, idx = 0, deftypes = 1;
3072 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3074 /* The first time through, just add SEARCH_EXTS to whatever we
3075 * already have, so we can check for default file types. */
3077 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3083 if ((strlen(tmpbuf) + strlen(scriptname)
3084 + MAX_EXT_LEN) >= sizeof tmpbuf)
3085 continue; /* don't search dir with too-long name */
3086 strcat(tmpbuf, scriptname);
3090 if (strEQ(scriptname, "-"))
3092 if (dosearch) { /* Look in '.' first. */
3093 char *cur = scriptname;
3095 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3097 if (strEQ(ext[i++],curext)) {
3098 extidx = -1; /* already has an ext */
3103 DEBUG_p(PerlIO_printf(Perl_debug_log,
3104 "Looking for %s\n",cur));
3105 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3106 && !S_ISDIR(PL_statbuf.st_mode)) {
3114 if (cur == scriptname) {
3115 len = strlen(scriptname);
3116 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3118 cur = strcpy(tmpbuf, scriptname);
3120 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3121 && strcpy(tmpbuf+len, ext[extidx++]));
3126 #ifdef MACOS_TRADITIONAL
3127 if (dosearch && !strchr(scriptname, ':') &&
3128 (s = PerlEnv_getenv("Commands")))
3130 if (dosearch && !strchr(scriptname, '/')
3132 && !strchr(scriptname, '\\')
3134 && (s = PerlEnv_getenv("PATH")))
3139 PL_bufend = s + strlen(s);
3140 while (s < PL_bufend) {
3141 #ifdef MACOS_TRADITIONAL
3142 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3146 #if defined(atarist) || defined(DOSISH)
3151 && *s != ';'; len++, s++) {
3152 if (len < sizeof tmpbuf)
3155 if (len < sizeof tmpbuf)
3157 #else /* ! (atarist || DOSISH) */
3158 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3161 #endif /* ! (atarist || DOSISH) */
3162 #endif /* MACOS_TRADITIONAL */
3165 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3166 continue; /* don't search dir with too-long name */
3167 #ifdef MACOS_TRADITIONAL
3168 if (len && tmpbuf[len - 1] != ':')
3169 tmpbuf[len++] = ':';
3172 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3173 && tmpbuf[len - 1] != '/'
3174 && tmpbuf[len - 1] != '\\'
3177 tmpbuf[len++] = '/';
3178 if (len == 2 && tmpbuf[0] == '.')
3181 (void)strcpy(tmpbuf + len, scriptname);
3185 len = strlen(tmpbuf);
3186 if (extidx > 0) /* reset after previous loop */
3190 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3191 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3192 if (S_ISDIR(PL_statbuf.st_mode)) {
3196 } while ( retval < 0 /* not there */
3197 && extidx>=0 && ext[extidx] /* try an extension? */
3198 && strcpy(tmpbuf+len, ext[extidx++])
3203 if (S_ISREG(PL_statbuf.st_mode)
3204 && cando(S_IRUSR,TRUE,&PL_statbuf)
3205 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3206 && cando(S_IXUSR,TRUE,&PL_statbuf)
3210 xfound = tmpbuf; /* bingo! */
3214 xfailed = savepv(tmpbuf);
3217 if (!xfound && !seen_dot && !xfailed &&
3218 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3219 || S_ISDIR(PL_statbuf.st_mode)))
3221 seen_dot = 1; /* Disable message. */
3223 if (flags & 1) { /* do or die? */
3224 Perl_croak(aTHX_ "Can't %s %s%s%s",
3225 (xfailed ? "execute" : "find"),
3226 (xfailed ? xfailed : scriptname),
3227 (xfailed ? "" : " on PATH"),
3228 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3230 scriptname = Nullch;
3234 scriptname = xfound;
3236 return (scriptname ? savepv(scriptname) : Nullch);
3242 /* Very simplistic scheduler for now */
3246 thr = thr->i.next_run;
3250 Perl_cond_init(pTHX_ perl_cond *cp)
3256 Perl_cond_signal(pTHX_ perl_cond *cp)
3259 perl_cond cond = *cp;
3264 /* Insert t in the runnable queue just ahead of us */
3265 t->i.next_run = thr->i.next_run;
3266 thr->i.next_run->i.prev_run = t;
3267 t->i.prev_run = thr;
3268 thr->i.next_run = t;
3269 thr->i.wait_queue = 0;
3270 /* Remove from the wait queue */
3276 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3279 perl_cond cond, cond_next;
3281 for (cond = *cp; cond; cond = cond_next) {
3283 /* Insert t in the runnable queue just ahead of us */
3284 t->i.next_run = thr->i.next_run;
3285 thr->i.next_run->i.prev_run = t;
3286 t->i.prev_run = thr;
3287 thr->i.next_run = t;
3288 thr->i.wait_queue = 0;
3289 /* Remove from the wait queue */
3290 cond_next = cond->next;
3297 Perl_cond_wait(pTHX_ perl_cond *cp)
3301 if (thr->i.next_run == thr)
3302 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3304 New(666, cond, 1, struct perl_wait_queue);
3308 thr->i.wait_queue = cond;
3309 /* Remove ourselves from runnable queue */
3310 thr->i.next_run->i.prev_run = thr->i.prev_run;
3311 thr->i.prev_run->i.next_run = thr->i.next_run;
3313 #endif /* FAKE_THREADS */
3315 #ifdef PTHREAD_GETSPECIFIC_INT
3316 struct perl_thread *
3321 if (pthread_getspecific(PL_thr_key, &t))
3322 Perl_croak(aTHX_ "panic: pthread_getspecific");
3323 return (struct perl_thread *) t;
3328 Perl_condpair_magic(pTHX_ SV *sv)
3332 SvUPGRADE(sv, SVt_PVMG);
3333 mg = mg_find(sv, 'm');
3337 New(53, cp, 1, condpair_t);
3338 MUTEX_INIT(&cp->mutex);
3339 COND_INIT(&cp->owner_cond);
3340 COND_INIT(&cp->cond);
3342 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3343 mg = mg_find(sv, 'm');
3345 /* someone else beat us to initialising it */
3346 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3347 MUTEX_DESTROY(&cp->mutex);
3348 COND_DESTROY(&cp->owner_cond);
3349 COND_DESTROY(&cp->cond);
3353 sv_magic(sv, Nullsv, 'm', 0, 0);
3355 mg->mg_ptr = (char *)cp;
3356 mg->mg_len = sizeof(cp);
3357 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3358 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3359 "%p: condpair_magic %p\n", thr, sv));)
3366 * Make a new perl thread structure using t as a prototype. Some of the
3367 * fields for the new thread are copied from the prototype thread, t,
3368 * so t should not be running in perl at the time this function is
3369 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3370 * thread calling new_struct_thread) clearly satisfies this constraint.
3372 struct perl_thread *
3373 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3375 #if !defined(PERL_IMPLICIT_CONTEXT)
3376 struct perl_thread *thr;
3382 sv = newSVpvn("", 0);
3383 SvGROW(sv, sizeof(struct perl_thread) + 1);
3384 SvCUR_set(sv, sizeof(struct perl_thread));
3385 thr = (Thread) SvPVX(sv);
3387 memset(thr, 0xab, sizeof(struct perl_thread));
3394 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3396 Zero(thr, 1, struct perl_thread);
3402 PL_curcop = &PL_compiling;
3403 thr->interp = t->interp;
3404 thr->cvcache = newHV();
3405 thr->threadsv = newAV();
3406 thr->specific = newAV();
3407 thr->errsv = newSVpvn("", 0);
3408 thr->flags = THRf_R_JOINABLE;
3409 MUTEX_INIT(&thr->mutex);
3413 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3416 PL_statname = NEWSV(66,0);
3417 PL_errors = newSVpvn("", 0);
3419 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3420 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3421 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3422 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3423 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3425 PL_reginterp_cnt = 0;
3426 PL_lastscream = Nullsv;
3429 PL_reg_start_tmp = 0;
3430 PL_reg_start_tmpl = 0;
3431 PL_reg_poscache = Nullch;
3433 /* parent thread's data needs to be locked while we make copy */
3434 MUTEX_LOCK(&t->mutex);
3436 PL_protect = t->Tprotect;
3438 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3439 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3440 PL_curstash = t->Tcurstash; /* always be set to main? */
3442 PL_tainted = t->Ttainted;
3443 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3444 PL_nrs = newSVsv(t->Tnrs);
3445 PL_rs = SvREFCNT_inc(PL_nrs);
3446 PL_last_in_gv = Nullgv;
3447 PL_ofslen = t->Tofslen;
3448 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3449 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3450 PL_chopset = t->Tchopset;
3451 PL_bodytarget = newSVsv(t->Tbodytarget);
3452 PL_toptarget = newSVsv(t->Ttoptarget);
3453 if (t->Tformtarget == t->Ttoptarget)
3454 PL_formtarget = PL_toptarget;
3456 PL_formtarget = PL_bodytarget;
3458 /* Initialise all per-thread SVs that the template thread used */
3459 svp = AvARRAY(t->threadsv);
3460 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3461 if (*svp && *svp != &PL_sv_undef) {
3462 SV *sv = newSVsv(*svp);
3463 av_store(thr->threadsv, i, sv);
3464 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3465 DEBUG_S(PerlIO_printf(Perl_debug_log,
3466 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3470 thr->threadsvp = AvARRAY(thr->threadsv);
3472 MUTEX_LOCK(&PL_threads_mutex);
3474 thr->tid = ++PL_threadnum;
3475 thr->next = t->next;
3478 thr->next->prev = thr;
3479 MUTEX_UNLOCK(&PL_threads_mutex);
3481 /* done copying parent's state */
3482 MUTEX_UNLOCK(&t->mutex);
3484 #ifdef HAVE_THREAD_INTERN
3485 Perl_init_thread_intern(thr);
3486 #endif /* HAVE_THREAD_INTERN */
3489 #endif /* USE_THREADS */
3493 * This hack is to force load of "huge" support from libm.a
3494 * So it is in perl for (say) POSIX to use.
3495 * Needed for SunOS with Sun's 'acc' for example.
3504 #ifdef PERL_GLOBAL_STRUCT
3513 Perl_get_op_names(pTHX)
3519 Perl_get_op_descs(pTHX)
3525 Perl_get_no_modify(pTHX)
3527 return (char*)PL_no_modify;
3531 Perl_get_opargs(pTHX)
3537 Perl_get_ppaddr(pTHX)
3542 #ifndef HAS_GETENV_LEN
3544 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3546 char *env_trans = PerlEnv_getenv(env_elem);
3548 *len = strlen(env_trans);
3555 Perl_get_vtbl(pTHX_ int vtbl_id)
3557 MGVTBL* result = Null(MGVTBL*);
3561 result = &PL_vtbl_sv;
3564 result = &PL_vtbl_env;
3566 case want_vtbl_envelem:
3567 result = &PL_vtbl_envelem;
3570 result = &PL_vtbl_sig;
3572 case want_vtbl_sigelem:
3573 result = &PL_vtbl_sigelem;
3575 case want_vtbl_pack:
3576 result = &PL_vtbl_pack;
3578 case want_vtbl_packelem:
3579 result = &PL_vtbl_packelem;
3581 case want_vtbl_dbline:
3582 result = &PL_vtbl_dbline;
3585 result = &PL_vtbl_isa;
3587 case want_vtbl_isaelem:
3588 result = &PL_vtbl_isaelem;
3590 case want_vtbl_arylen:
3591 result = &PL_vtbl_arylen;
3593 case want_vtbl_glob:
3594 result = &PL_vtbl_glob;
3596 case want_vtbl_mglob:
3597 result = &PL_vtbl_mglob;
3599 case want_vtbl_nkeys:
3600 result = &PL_vtbl_nkeys;
3602 case want_vtbl_taint:
3603 result = &PL_vtbl_taint;
3605 case want_vtbl_substr:
3606 result = &PL_vtbl_substr;
3609 result = &PL_vtbl_vec;
3612 result = &PL_vtbl_pos;
3615 result = &PL_vtbl_bm;
3618 result = &PL_vtbl_fm;
3620 case want_vtbl_uvar:
3621 result = &PL_vtbl_uvar;
3624 case want_vtbl_mutex:
3625 result = &PL_vtbl_mutex;
3628 case want_vtbl_defelem:
3629 result = &PL_vtbl_defelem;
3631 case want_vtbl_regexp:
3632 result = &PL_vtbl_regexp;
3634 case want_vtbl_regdata:
3635 result = &PL_vtbl_regdata;
3637 case want_vtbl_regdatum:
3638 result = &PL_vtbl_regdatum;
3640 #ifdef USE_LOCALE_COLLATE
3641 case want_vtbl_collxfrm:
3642 result = &PL_vtbl_collxfrm;
3645 case want_vtbl_amagic:
3646 result = &PL_vtbl_amagic;
3648 case want_vtbl_amagicelem:
3649 result = &PL_vtbl_amagicelem;
3651 case want_vtbl_backref:
3652 result = &PL_vtbl_backref;
3659 Perl_my_fflush_all(pTHX)
3662 return PerlIO_flush(NULL);
3665 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3666 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3667 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3669 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3670 open_max = sysconf(_SC_OPEN_MAX);
3673 open_max = FOPEN_MAX;
3676 open_max = OPEN_MAX;
3687 for (i = 0; i < open_max; i++)
3688 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3689 STDIO_STREAM_ARRAY[i]._file < open_max &&
3690 STDIO_STREAM_ARRAY[i]._flag)
3691 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3695 SETERRNO(EBADF,RMS$_IFI);
3701 Perl_my_atof(pTHX_ const char* s) {
3702 #ifdef USE_LOCALE_NUMERIC
3703 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3707 SET_NUMERIC_STANDARD();
3709 SET_NUMERIC_LOCAL();
3710 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3715 return Perl_atof(s);
3717 return Perl_atof(s);