3 * Copyright (c) 1991-2000, 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
44 # include <sys/wait.h>
55 long xcount[MAXXCOUNT];
56 long lastxcount[MAXXCOUNT];
57 long xycount[MAXXCOUNT][MAXYCOUNT];
58 long lastxycount[MAXXCOUNT][MAXYCOUNT];
62 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
63 # define FD_CLOEXEC 1 /* NeXT needs this */
66 /* paranoid version of system's malloc() */
68 /* NOTE: Do not call the next three routines directly. Use the macros
69 * in handy.h, so that we can easily redefine everything to do tracking of
70 * allocated hunks back to the original New to track down any memory leaks.
71 * XXX This advice seems to be widely ignored :-( --AD August 1996.
75 Perl_safesysmalloc(MEM_SIZE size)
81 PerlIO_printf(Perl_error_log,
82 "Allocation too large: %lx\n", size) FLUSH;
85 #endif /* HAS_64K_LIMIT */
88 Perl_croak_nocontext("panic: malloc");
90 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
91 PERL_ALLOC_CHECK(ptr);
92 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
98 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
105 /* paranoid version of system's realloc() */
108 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
112 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
113 Malloc_t PerlMem_realloc();
114 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
118 PerlIO_printf(Perl_error_log,
119 "Reallocation too large: %lx\n", size) FLUSH;
122 #endif /* HAS_64K_LIMIT */
129 return safesysmalloc(size);
132 Perl_croak_nocontext("panic: realloc");
134 ptr = PerlMem_realloc(where,size);
135 PERL_ALLOC_CHECK(ptr);
137 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
138 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
145 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
152 /* safe version of system's free() */
155 Perl_safesysfree(Malloc_t where)
157 #ifdef PERL_IMPLICIT_SYS
160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
167 /* safe version of system's calloc() */
170 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
176 if (size * count > 0xffff) {
177 PerlIO_printf(Perl_error_log,
178 "Allocation too large: %lx\n", size * count) FLUSH;
181 #endif /* HAS_64K_LIMIT */
183 if ((long)size < 0 || (long)count < 0)
184 Perl_croak_nocontext("panic: calloc");
187 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
188 PERL_ALLOC_CHECK(ptr);
189 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));
191 memset((void*)ptr, 0, size);
197 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
206 struct mem_test_strut {
214 # define ALIGN sizeof(struct mem_test_strut)
216 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
217 # define typeof_chunk(ch) \
218 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
219 # define set_typeof_chunk(ch,t) \
220 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
221 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? ((size) - 1)/8 + 5 \
228 Perl_safexmalloc(I32 x, MEM_SIZE size)
230 register char* where = (char*)safemalloc(size + ALIGN);
233 xycount[x][SIZE_TO_Y(size)]++;
234 set_typeof_chunk(where, x);
235 sizeof_chunk(where) = size;
236 return (Malloc_t)(where + ALIGN);
240 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
242 char *where = (char*)wh;
245 return safexmalloc(0,size);
248 MEM_SIZE old = sizeof_chunk(where - ALIGN);
249 int t = typeof_chunk(where - ALIGN);
250 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
252 xycount[t][SIZE_TO_Y(old)]--;
253 xycount[t][SIZE_TO_Y(size)]++;
254 xcount[t] += size - old;
255 sizeof_chunk(new) = size;
256 return (Malloc_t)(new + ALIGN);
261 Perl_safexfree(Malloc_t wh)
264 char *where = (char*)wh;
270 size = sizeof_chunk(where);
271 x = where[0] + 100 * where[1];
273 xycount[x][SIZE_TO_Y(size)]--;
278 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
280 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
282 xycount[x][SIZE_TO_Y(size)]++;
283 memset((void*)(where + ALIGN), 0, size * count);
284 set_typeof_chunk(where, x);
285 sizeof_chunk(where) = size;
286 return (Malloc_t)(where + ALIGN);
290 S_xstat(pTHX_ int flag)
292 register I32 i, j, total = 0;
293 I32 subtot[MAXYCOUNT];
295 for (j = 0; j < MAXYCOUNT; j++) {
299 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);
300 for (i = 0; i < MAXXCOUNT; i++) {
302 for (j = 0; j < MAXYCOUNT; j++) {
303 subtot[j] += xycount[i][j];
306 ? xcount[i] /* Have something */
308 ? xcount[i] != lastxcount[i] /* Changed */
309 : xcount[i] > lastxcount[i])) { /* Growed */
310 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
311 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
312 lastxcount[i] = xcount[i];
313 for (j = 0; j < MAXYCOUNT; j++) {
315 ? xycount[i][j] /* Have something */
317 ? xycount[i][j] != lastxycount[i][j] /* Changed */
318 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
319 PerlIO_printf(Perl_debug_log,"%3ld ",
321 ? xycount[i][j] - lastxycount[i][j]
323 lastxycount[i][j] = xycount[i][j];
325 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
328 PerlIO_printf(Perl_debug_log, "\n");
332 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
333 for (j = 0; j < MAXYCOUNT; j++) {
335 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
337 PerlIO_printf(Perl_debug_log, " . ");
340 PerlIO_printf(Perl_debug_log, "\n");
344 #endif /* LEAKTEST */
346 /* copy a string up to some (non-backslashed) delimiter, if any */
349 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
352 for (tolen = 0; from < fromend; from++, tolen++) {
354 if (from[1] == delim)
363 else if (*from == delim)
374 /* return ptr to little string in big string, NULL if not found */
375 /* This routine was donated by Corey Satten. */
378 Perl_instr(pTHX_ register const char *big, register const char *little)
380 register const char *s, *x;
391 for (x=big,s=little; *s; /**/ ) {
400 return (char*)(big-1);
405 /* same as instr but allow embedded nulls */
408 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
410 register const char *s, *x;
411 register I32 first = *little;
412 register const char *littleend = lend;
414 if (!first && little >= littleend)
416 if (bigend - big < littleend - little)
418 bigend -= littleend - little++;
419 while (big <= bigend) {
422 for (x=big,s=little; s < littleend; /**/ ) {
429 return (char*)(big-1);
434 /* reverse of the above--find last substring */
437 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
439 register const char *bigbeg;
440 register const char *s, *x;
441 register I32 first = *little;
442 register const char *littleend = lend;
444 if (!first && little >= littleend)
445 return (char*)bigend;
447 big = bigend - (littleend - little++);
448 while (big >= bigbeg) {
451 for (x=big+2,s=little; s < littleend; /**/ ) {
458 return (char*)(big+1);
464 * Set up for a new ctype locale.
467 Perl_new_ctype(pTHX_ const char *newctype)
469 #ifdef USE_LOCALE_CTYPE
473 for (i = 0; i < 256; i++) {
475 PL_fold_locale[i] = toLOWER_LC(i);
476 else if (isLOWER_LC(i))
477 PL_fold_locale[i] = toUPPER_LC(i);
479 PL_fold_locale[i] = i;
482 #endif /* USE_LOCALE_CTYPE */
486 * Set up for a new collation locale.
489 Perl_new_collate(pTHX_ const char *newcoll)
491 #ifdef USE_LOCALE_COLLATE
494 if (PL_collation_name) {
496 Safefree(PL_collation_name);
497 PL_collation_name = NULL;
498 PL_collation_standard = TRUE;
499 PL_collxfrm_base = 0;
500 PL_collxfrm_mult = 2;
505 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
507 Safefree(PL_collation_name);
508 PL_collation_name = savepv(newcoll);
509 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
512 /* 2: at most so many chars ('a', 'b'). */
513 /* 50: surely no system expands a char more. */
514 #define XFRMBUFSIZE (2 * 50)
515 char xbuf[XFRMBUFSIZE];
516 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
517 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
518 SSize_t mult = fb - fa;
520 Perl_croak(aTHX_ "strxfrm() gets absurd");
521 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
522 PL_collxfrm_mult = mult;
526 #endif /* USE_LOCALE_COLLATE */
530 Perl_set_numeric_radix(pTHX)
532 #ifdef USE_LOCALE_NUMERIC
533 # ifdef HAS_LOCALECONV
537 if (lc && lc->decimal_point)
538 /* We assume that decimal separator aka the radix
539 * character is always a single character. If it
540 * ever is a string, this needs to be rethunk. */
541 PL_numeric_radix = *lc->decimal_point;
543 PL_numeric_radix = 0;
544 # endif /* HAS_LOCALECONV */
545 #endif /* USE_LOCALE_NUMERIC */
549 * Set up for a new numeric locale.
552 Perl_new_numeric(pTHX_ const char *newnum)
554 #ifdef USE_LOCALE_NUMERIC
557 if (PL_numeric_name) {
558 Safefree(PL_numeric_name);
559 PL_numeric_name = NULL;
560 PL_numeric_standard = TRUE;
561 PL_numeric_local = TRUE;
566 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
567 Safefree(PL_numeric_name);
568 PL_numeric_name = savepv(newnum);
569 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
570 PL_numeric_local = TRUE;
574 #endif /* USE_LOCALE_NUMERIC */
578 Perl_set_numeric_standard(pTHX)
580 #ifdef USE_LOCALE_NUMERIC
582 if (! PL_numeric_standard) {
583 setlocale(LC_NUMERIC, "C");
584 PL_numeric_standard = TRUE;
585 PL_numeric_local = FALSE;
588 #endif /* USE_LOCALE_NUMERIC */
592 Perl_set_numeric_local(pTHX)
594 #ifdef USE_LOCALE_NUMERIC
596 if (! PL_numeric_local) {
597 setlocale(LC_NUMERIC, PL_numeric_name);
598 PL_numeric_standard = FALSE;
599 PL_numeric_local = TRUE;
603 #endif /* USE_LOCALE_NUMERIC */
607 * Initialize locale awareness.
610 Perl_init_i18nl10n(pTHX_ int printwarn)
614 * 1 = set ok or not applicable,
615 * 0 = fallback to C locale,
616 * -1 = fallback to C locale failed
621 #ifdef USE_LOCALE_CTYPE
622 char *curctype = NULL;
623 #endif /* USE_LOCALE_CTYPE */
624 #ifdef USE_LOCALE_COLLATE
625 char *curcoll = NULL;
626 #endif /* USE_LOCALE_COLLATE */
627 #ifdef USE_LOCALE_NUMERIC
629 #endif /* USE_LOCALE_NUMERIC */
631 char *language = PerlEnv_getenv("LANGUAGE");
633 char *lc_all = PerlEnv_getenv("LC_ALL");
634 char *lang = PerlEnv_getenv("LANG");
635 bool setlocale_failure = FALSE;
637 #ifdef LOCALE_ENVIRON_REQUIRED
640 * Ultrix setlocale(..., "") fails if there are no environment
641 * variables from which to get a locale name.
648 if (setlocale(LC_ALL, ""))
651 setlocale_failure = TRUE;
653 if (!setlocale_failure) {
654 #ifdef USE_LOCALE_CTYPE
657 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
659 setlocale_failure = TRUE;
660 #endif /* USE_LOCALE_CTYPE */
661 #ifdef USE_LOCALE_COLLATE
663 setlocale(LC_COLLATE,
664 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
666 setlocale_failure = TRUE;
667 #endif /* USE_LOCALE_COLLATE */
668 #ifdef USE_LOCALE_NUMERIC
670 setlocale(LC_NUMERIC,
671 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
673 setlocale_failure = TRUE;
674 #endif /* USE_LOCALE_NUMERIC */
679 #endif /* !LOCALE_ENVIRON_REQUIRED */
682 if (! setlocale(LC_ALL, ""))
683 setlocale_failure = TRUE;
686 if (!setlocale_failure) {
687 #ifdef USE_LOCALE_CTYPE
688 if (! (curctype = setlocale(LC_CTYPE, "")))
689 setlocale_failure = TRUE;
690 #endif /* USE_LOCALE_CTYPE */
691 #ifdef USE_LOCALE_COLLATE
692 if (! (curcoll = setlocale(LC_COLLATE, "")))
693 setlocale_failure = TRUE;
694 #endif /* USE_LOCALE_COLLATE */
695 #ifdef USE_LOCALE_NUMERIC
696 if (! (curnum = setlocale(LC_NUMERIC, "")))
697 setlocale_failure = TRUE;
698 #endif /* USE_LOCALE_NUMERIC */
701 if (setlocale_failure) {
703 bool locwarn = (printwarn > 1 ||
705 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
710 PerlIO_printf(Perl_error_log,
711 "perl: warning: Setting locale failed.\n");
715 PerlIO_printf(Perl_error_log,
716 "perl: warning: Setting locale failed for the categories:\n\t");
717 #ifdef USE_LOCALE_CTYPE
719 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
720 #endif /* USE_LOCALE_CTYPE */
721 #ifdef USE_LOCALE_COLLATE
723 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
724 #endif /* USE_LOCALE_COLLATE */
725 #ifdef USE_LOCALE_NUMERIC
727 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
728 #endif /* USE_LOCALE_NUMERIC */
729 PerlIO_printf(Perl_error_log, "\n");
733 PerlIO_printf(Perl_error_log,
734 "perl: warning: Please check that your locale settings:\n");
737 PerlIO_printf(Perl_error_log,
738 "\tLANGUAGE = %c%s%c,\n",
739 language ? '"' : '(',
740 language ? language : "unset",
741 language ? '"' : ')');
744 PerlIO_printf(Perl_error_log,
745 "\tLC_ALL = %c%s%c,\n",
747 lc_all ? lc_all : "unset",
752 for (e = environ; *e; e++) {
753 if (strnEQ(*e, "LC_", 3)
754 && strnNE(*e, "LC_ALL=", 7)
755 && (p = strchr(*e, '=')))
756 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
757 (int)(p - *e), *e, p + 1);
761 PerlIO_printf(Perl_error_log,
764 lang ? lang : "unset",
767 PerlIO_printf(Perl_error_log,
768 " are supported and installed on your system.\n");
773 if (setlocale(LC_ALL, "C")) {
775 PerlIO_printf(Perl_error_log,
776 "perl: warning: Falling back to the standard locale (\"C\").\n");
781 PerlIO_printf(Perl_error_log,
782 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
789 #ifdef USE_LOCALE_CTYPE
790 || !(curctype || setlocale(LC_CTYPE, "C"))
791 #endif /* USE_LOCALE_CTYPE */
792 #ifdef USE_LOCALE_COLLATE
793 || !(curcoll || setlocale(LC_COLLATE, "C"))
794 #endif /* USE_LOCALE_COLLATE */
795 #ifdef USE_LOCALE_NUMERIC
796 || !(curnum || setlocale(LC_NUMERIC, "C"))
797 #endif /* USE_LOCALE_NUMERIC */
801 PerlIO_printf(Perl_error_log,
802 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
806 #endif /* ! LC_ALL */
808 #ifdef USE_LOCALE_CTYPE
809 curctype = setlocale(LC_CTYPE, Nullch);
810 #endif /* USE_LOCALE_CTYPE */
811 #ifdef USE_LOCALE_COLLATE
812 curcoll = setlocale(LC_COLLATE, Nullch);
813 #endif /* USE_LOCALE_COLLATE */
814 #ifdef USE_LOCALE_NUMERIC
815 curnum = setlocale(LC_NUMERIC, Nullch);
816 #endif /* USE_LOCALE_NUMERIC */
819 #ifdef USE_LOCALE_CTYPE
821 #endif /* USE_LOCALE_CTYPE */
823 #ifdef USE_LOCALE_COLLATE
824 new_collate(curcoll);
825 #endif /* USE_LOCALE_COLLATE */
827 #ifdef USE_LOCALE_NUMERIC
829 #endif /* USE_LOCALE_NUMERIC */
831 #endif /* USE_LOCALE */
836 /* Backwards compatibility. */
838 Perl_init_i18nl14n(pTHX_ int printwarn)
840 return init_i18nl10n(printwarn);
843 #ifdef USE_LOCALE_COLLATE
846 * mem_collxfrm() is a bit like strxfrm() but with two important
847 * differences. First, it handles embedded NULs. Second, it allocates
848 * a bit more memory than needed for the transformed data itself.
849 * The real transformed data begins at offset sizeof(collationix).
850 * Please see sv_collxfrm() to see how this is used.
853 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
856 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
858 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
859 /* the +1 is for the terminating NUL. */
861 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
862 New(171, xbuf, xAlloc, char);
866 *(U32*)xbuf = PL_collation_ix;
867 xout = sizeof(PL_collation_ix);
868 for (xin = 0; xin < len; ) {
872 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
875 if (xused < xAlloc - xout)
877 xAlloc = (2 * xAlloc) + 1;
878 Renew(xbuf, xAlloc, char);
883 xin += strlen(s + xin) + 1;
886 /* Embedded NULs are understood but silently skipped
887 * because they make no sense in locale collation. */
891 *xlen = xout - sizeof(PL_collation_ix);
900 #endif /* USE_LOCALE_COLLATE */
902 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
904 /* As a space optimization, we do not compile tables for strings of length
905 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
906 special-cased in fbm_instr().
908 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
911 =for apidoc fbm_compile
913 Analyses the string in order to make fast searches on it using fbm_instr()
914 -- the Boyer-Moore algorithm.
920 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
929 if (flags & FBMcf_TAIL)
930 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
931 s = (U8*)SvPV_force(sv, len);
932 (void)SvUPGRADE(sv, SVt_PVBM);
933 if (len == 0) /* TAIL might be on on a zero-length string. */
943 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
944 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
945 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
946 memset((void*)table, mlen, 256);
947 table[-1] = (U8)flags;
949 sb = s - mlen + 1; /* first char (maybe) */
951 if (table[*s] == mlen)
956 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
959 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
960 for (i = 0; i < len; i++) {
961 if (PL_freq[s[i]] < frequency) {
963 frequency = PL_freq[s[i]];
966 BmRARE(sv) = s[rarest];
967 BmPREVIOUS(sv) = rarest;
968 BmUSEFUL(sv) = 100; /* Initial value */
969 if (flags & FBMcf_TAIL)
971 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
972 BmRARE(sv),BmPREVIOUS(sv)));
975 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
976 /* If SvTAIL is actually due to \Z or \z, this gives false positives
980 =for apidoc fbm_instr
982 Returns the location of the SV in the string delimited by C<str> and
983 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
984 does not have to be fbm_compiled, but the search will not be as fast
991 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
993 register unsigned char *s;
995 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
996 register STRLEN littlelen = l;
997 register I32 multiline = flags & FBMrf_MULTILINE;
999 if (bigend - big < littlelen) {
1000 if ( SvTAIL(littlestr)
1001 && (bigend - big == littlelen - 1)
1003 || (*big == *little && memEQ(big, little, littlelen - 1))))
1008 if (littlelen <= 2) { /* Special-cased */
1010 if (littlelen == 1) {
1011 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1012 /* Know that bigend != big. */
1013 if (bigend[-1] == '\n')
1014 return (char *)(bigend - 1);
1015 return (char *) bigend;
1018 while (s < bigend) {
1023 if (SvTAIL(littlestr))
1024 return (char *) bigend;
1028 return (char*)big; /* Cannot be SvTAIL! */
1030 /* littlelen is 2 */
1031 if (SvTAIL(littlestr) && !multiline) {
1032 if (bigend[-1] == '\n' && bigend[-2] == *little)
1033 return (char*)bigend - 2;
1034 if (bigend[-1] == *little)
1035 return (char*)bigend - 1;
1039 /* This should be better than FBM if c1 == c2, and almost
1040 as good otherwise: maybe better since we do less indirection.
1041 And we save a lot of memory by caching no table. */
1042 register unsigned char c1 = little[0];
1043 register unsigned char c2 = little[1];
1048 while (s <= bigend) {
1051 return (char*)s - 1;
1058 goto check_1char_anchor;
1069 goto check_1char_anchor;
1072 while (s <= bigend) {
1075 return (char*)s - 1;
1077 goto check_1char_anchor;
1086 check_1char_anchor: /* One char and anchor! */
1087 if (SvTAIL(littlestr) && (*bigend == *little))
1088 return (char *)bigend; /* bigend is already decremented. */
1091 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1092 s = bigend - littlelen;
1093 if (s >= big && bigend[-1] == '\n' && *s == *little
1094 /* Automatically of length > 2 */
1095 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1097 return (char*)s; /* how sweet it is */
1100 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1102 return (char*)s + 1; /* how sweet it is */
1106 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1107 char *b = ninstr((char*)big,(char*)bigend,
1108 (char*)little, (char*)little + littlelen);
1110 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1111 /* Chop \n from littlestr: */
1112 s = bigend - littlelen + 1;
1114 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1123 { /* Do actual FBM. */
1124 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1125 register unsigned char *oldlittle;
1127 if (littlelen > bigend - big)
1129 --littlelen; /* Last char found by table lookup */
1131 s = big + littlelen;
1132 little += littlelen; /* last char */
1139 if ((tmp = table[*s])) {
1141 if (bigend - s > tmp) {
1147 if ((s += tmp) < bigend)
1152 else { /* less expensive than calling strncmp() */
1153 register unsigned char *olds = s;
1158 if (*--s == *--little)
1160 s = olds + 1; /* here we pay the price for failure */
1162 if (s < bigend) /* fake up continue to outer loop */
1170 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1171 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1172 return (char*)bigend - littlelen;
1177 /* start_shift, end_shift are positive quantities which give offsets
1178 of ends of some substring of bigstr.
1179 If `last' we want the last occurence.
1180 old_posp is the way of communication between consequent calls if
1181 the next call needs to find the .
1182 The initial *old_posp should be -1.
1184 Note that we take into account SvTAIL, so one can get extra
1185 optimizations if _ALL flag is set.
1188 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1189 if PL_multiline. In fact if !PL_multiline the autoritative answer
1190 is not supported yet. */
1193 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1196 register unsigned char *s, *x;
1197 register unsigned char *big;
1199 register I32 previous;
1201 register unsigned char *little;
1202 register I32 stop_pos;
1203 register unsigned char *littleend;
1207 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1208 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1210 if ( BmRARE(littlestr) == '\n'
1211 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1212 little = (unsigned char *)(SvPVX(littlestr));
1213 littleend = little + SvCUR(littlestr);
1220 little = (unsigned char *)(SvPVX(littlestr));
1221 littleend = little + SvCUR(littlestr);
1223 /* The value of pos we can start at: */
1224 previous = BmPREVIOUS(littlestr);
1225 big = (unsigned char *)(SvPVX(bigstr));
1226 /* The value of pos we can stop at: */
1227 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1228 if (previous + start_shift > stop_pos) {
1229 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1233 while (pos < previous + start_shift) {
1234 if (!(pos += PL_screamnext[pos]))
1239 if (pos >= stop_pos) break;
1240 if (big[pos-previous] != first)
1242 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1248 if (s == littleend) {
1250 if (!last) return (char *)(big+pos-previous);
1253 } while ( pos += PL_screamnext[pos] );
1254 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1255 #else /* !POINTERRIGOR */
1258 if (pos >= stop_pos) break;
1259 if (big[pos] != first)
1261 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1267 if (s == littleend) {
1269 if (!last) return (char *)(big+pos);
1272 } while ( pos += PL_screamnext[pos] );
1274 return (char *)(big+(*old_posp));
1275 #endif /* POINTERRIGOR */
1277 if (!SvTAIL(littlestr) || (end_shift > 0))
1279 /* Ignore the trailing "\n". This code is not microoptimized */
1280 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1281 stop_pos = littleend - little; /* Actual littlestr len */
1286 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1292 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1294 register U8 *a = (U8 *)s1;
1295 register U8 *b = (U8 *)s2;
1297 if (*a != *b && *a != PL_fold[*b])
1305 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1307 register U8 *a = (U8 *)s1;
1308 register U8 *b = (U8 *)s2;
1310 if (*a != *b && *a != PL_fold_locale[*b])
1317 /* copy a string to a safe spot */
1322 Copy a string to a safe spot. This does not use an SV.
1328 Perl_savepv(pTHX_ const char *sv)
1330 register char *newaddr;
1332 New(902,newaddr,strlen(sv)+1,char);
1333 (void)strcpy(newaddr,sv);
1337 /* same thing but with a known length */
1342 Copy a string to a safe spot. The C<len> indicates number of bytes to
1343 copy. This does not use an SV.
1349 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1351 register char *newaddr;
1353 New(903,newaddr,len+1,char);
1354 Copy(sv,newaddr,len,char); /* might not be null terminated */
1355 newaddr[len] = '\0'; /* is now */
1359 /* the SV for Perl_form() and mess() is not kept in an arena */
1369 return sv_2mortal(newSVpvn("",0));
1374 /* Create as PVMG now, to avoid any upgrading later */
1375 New(905, sv, 1, SV);
1376 Newz(905, any, 1, XPVMG);
1377 SvFLAGS(sv) = SVt_PVMG;
1378 SvANY(sv) = (void*)any;
1379 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1384 #if defined(PERL_IMPLICIT_CONTEXT)
1386 Perl_form_nocontext(const char* pat, ...)
1391 va_start(args, pat);
1392 retval = vform(pat, &args);
1396 #endif /* PERL_IMPLICIT_CONTEXT */
1399 Perl_form(pTHX_ const char* pat, ...)
1403 va_start(args, pat);
1404 retval = vform(pat, &args);
1410 Perl_vform(pTHX_ const char *pat, va_list *args)
1412 SV *sv = mess_alloc();
1413 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1417 #if defined(PERL_IMPLICIT_CONTEXT)
1419 Perl_mess_nocontext(const char *pat, ...)
1424 va_start(args, pat);
1425 retval = vmess(pat, &args);
1429 #endif /* PERL_IMPLICIT_CONTEXT */
1432 Perl_mess(pTHX_ const char *pat, ...)
1436 va_start(args, pat);
1437 retval = vmess(pat, &args);
1443 Perl_vmess(pTHX_ const char *pat, va_list *args)
1445 SV *sv = mess_alloc();
1446 static char dgd[] = " during global destruction.\n";
1448 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1449 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1451 if (CopLINE(PL_curcop))
1452 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1453 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1454 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1455 bool line_mode = (RsSIMPLE(PL_rs) &&
1456 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1457 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1458 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1459 line_mode ? "line" : "chunk",
1460 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1464 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1466 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1472 Perl_vdie(pTHX_ const char* pat, va_list *args)
1476 int was_in_eval = PL_in_eval;
1483 DEBUG_S(PerlIO_printf(Perl_debug_log,
1484 "%p: die: curstack = %p, mainstack = %p\n",
1485 thr, PL_curstack, PL_mainstack));
1488 msv = vmess(pat, args);
1489 if (PL_errors && SvCUR(PL_errors)) {
1490 sv_catsv(PL_errors, msv);
1491 message = SvPV(PL_errors, msglen);
1492 SvCUR_set(PL_errors, 0);
1495 message = SvPV(msv,msglen);
1502 DEBUG_S(PerlIO_printf(Perl_debug_log,
1503 "%p: die: message = %s\ndiehook = %p\n",
1504 thr, message, PL_diehook));
1506 /* sv_2cv might call Perl_croak() */
1507 SV *olddiehook = PL_diehook;
1509 SAVESPTR(PL_diehook);
1510 PL_diehook = Nullsv;
1511 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1513 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1519 msg = newSVpvn(message, msglen);
1527 PUSHSTACKi(PERLSI_DIEHOOK);
1531 call_sv((SV*)cv, G_DISCARD);
1537 PL_restartop = die_where(message, msglen);
1538 DEBUG_S(PerlIO_printf(Perl_debug_log,
1539 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1540 thr, PL_restartop, was_in_eval, PL_top_env));
1541 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1543 return PL_restartop;
1546 #if defined(PERL_IMPLICIT_CONTEXT)
1548 Perl_die_nocontext(const char* pat, ...)
1553 va_start(args, pat);
1554 o = vdie(pat, &args);
1558 #endif /* PERL_IMPLICIT_CONTEXT */
1561 Perl_die(pTHX_ const char* pat, ...)
1565 va_start(args, pat);
1566 o = vdie(pat, &args);
1572 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1582 msv = vmess(pat, args);
1583 if (PL_errors && SvCUR(PL_errors)) {
1584 sv_catsv(PL_errors, msv);
1585 message = SvPV(PL_errors, msglen);
1586 SvCUR_set(PL_errors, 0);
1589 message = SvPV(msv,msglen);
1591 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1592 PTR2UV(thr), message));
1595 /* sv_2cv might call Perl_croak() */
1596 SV *olddiehook = PL_diehook;
1598 SAVESPTR(PL_diehook);
1599 PL_diehook = Nullsv;
1600 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1602 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1607 msg = newSVpvn(message, msglen);
1611 PUSHSTACKi(PERLSI_DIEHOOK);
1615 call_sv((SV*)cv, G_DISCARD);
1621 PL_restartop = die_where(message, msglen);
1626 /* SFIO can really mess with your errno */
1629 PerlIO *serr = Perl_error_log;
1631 PerlIO_write(serr, message, msglen);
1632 (void)PerlIO_flush(serr);
1640 #if defined(PERL_IMPLICIT_CONTEXT)
1642 Perl_croak_nocontext(const char *pat, ...)
1646 va_start(args, pat);
1651 #endif /* PERL_IMPLICIT_CONTEXT */
1656 This is the XSUB-writer's interface to Perl's C<die> function. Use this
1657 function the same way you use the C C<printf> function. See
1664 Perl_croak(pTHX_ const char *pat, ...)
1667 va_start(args, pat);
1674 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1683 msv = vmess(pat, args);
1684 message = SvPV(msv, msglen);
1687 /* sv_2cv might call Perl_warn() */
1689 SV *oldwarnhook = PL_warnhook;
1691 SAVESPTR(PL_warnhook);
1692 PL_warnhook = Nullsv;
1693 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1695 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1700 msg = newSVpvn(message, msglen);
1704 PUSHSTACKi(PERLSI_WARNHOOK);
1708 call_sv((SV*)cv, G_DISCARD);
1715 PerlIO *serr = Perl_error_log;
1717 PerlIO_write(serr, message, msglen);
1719 DEBUG_L(*message == '!'
1720 ? (xstat(message[1]=='!'
1721 ? (message[2]=='!' ? 2 : 1)
1726 (void)PerlIO_flush(serr);
1730 #if defined(PERL_IMPLICIT_CONTEXT)
1732 Perl_warn_nocontext(const char *pat, ...)
1736 va_start(args, pat);
1740 #endif /* PERL_IMPLICIT_CONTEXT */
1745 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1746 function the same way you use the C C<printf> function. See
1753 Perl_warn(pTHX_ const char *pat, ...)
1756 va_start(args, pat);
1761 #if defined(PERL_IMPLICIT_CONTEXT)
1763 Perl_warner_nocontext(U32 err, const char *pat, ...)
1767 va_start(args, pat);
1768 vwarner(err, pat, &args);
1771 #endif /* PERL_IMPLICIT_CONTEXT */
1774 Perl_warner(pTHX_ U32 err, const char* pat,...)
1777 va_start(args, pat);
1778 vwarner(err, pat, &args);
1783 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1793 msv = vmess(pat, args);
1794 message = SvPV(msv, msglen);
1798 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1799 #endif /* USE_THREADS */
1801 /* sv_2cv might call Perl_croak() */
1802 SV *olddiehook = PL_diehook;
1804 SAVESPTR(PL_diehook);
1805 PL_diehook = Nullsv;
1806 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1808 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1813 msg = newSVpvn(message, msglen);
1820 call_sv((SV*)cv, G_DISCARD);
1826 PL_restartop = die_where(message, msglen);
1830 PerlIO *serr = Perl_error_log;
1831 PerlIO_write(serr, message, msglen);
1832 (void)PerlIO_flush(serr);
1839 /* sv_2cv might call Perl_warn() */
1841 SV *oldwarnhook = PL_warnhook;
1843 SAVESPTR(PL_warnhook);
1844 PL_warnhook = Nullsv;
1845 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1847 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1852 msg = newSVpvn(message, msglen);
1859 call_sv((SV*)cv, G_DISCARD);
1866 PerlIO *serr = Perl_error_log;
1867 PerlIO_write(serr, message, msglen);
1871 (void)PerlIO_flush(serr);
1876 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1877 #if !defined(WIN32) && !defined(__CYGWIN__)
1879 Perl_my_setenv(pTHX_ char *nam, char *val)
1881 #ifndef PERL_USE_SAFE_PUTENV
1882 /* most putenv()s leak, so we manipulate environ directly */
1883 register I32 i=setenv_getix(nam); /* where does it go? */
1885 if (environ == PL_origenviron) { /* need we copy environment? */
1891 for (max = i; environ[max]; max++) ;
1892 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1893 for (j=0; j<max; j++) { /* copy environment */
1894 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1895 strcpy(tmpenv[j], environ[j]);
1897 tmpenv[max] = Nullch;
1898 environ = tmpenv; /* tell exec where it is now */
1901 safesysfree(environ[i]);
1902 while (environ[i]) {
1903 environ[i] = environ[i+1];
1908 if (!environ[i]) { /* does not exist yet */
1909 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1910 environ[i+1] = Nullch; /* make sure it's null terminated */
1913 safesysfree(environ[i]);
1914 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1916 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1918 #else /* PERL_USE_SAFE_PUTENV */
1921 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1922 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1923 (void)putenv(new_env);
1924 #endif /* PERL_USE_SAFE_PUTENV */
1927 #else /* WIN32 || __CYGWIN__ */
1928 #if defined(__CYGWIN__)
1930 * Save environ of perl.exe, currently Cygwin links in separate environ's
1931 * for each exe/dll. Probably should be a member of impure_ptr.
1933 static char ***Perl_main_environ;
1936 Perl_my_setenv_init(char ***penviron)
1938 Perl_main_environ = penviron;
1942 Perl_my_setenv(pTHX_ char *nam, char *val)
1944 /* You can not directly manipulate the environ[] array because
1945 * the routines do some additional work that syncs the Cygwin
1946 * environment with the Windows environment.
1948 char *oldstr = environ[setenv_getix(nam)];
1954 safesysfree(oldstr);
1957 setenv(nam, val, 1);
1958 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1959 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1960 safesysfree(oldstr);
1962 #else /* if WIN32 */
1965 Perl_my_setenv(pTHX_ char *nam,char *val)
1968 #ifdef USE_WIN32_RTL_ENV
1970 register char *envstr;
1971 STRLEN namlen = strlen(nam);
1973 char *oldstr = environ[setenv_getix(nam)];
1975 /* putenv() has totally broken semantics in both the Borland
1976 * and Microsoft CRTLs. They either store the passed pointer in
1977 * the environment without making a copy, or make a copy and don't
1978 * free it. And on top of that, they dont free() old entries that
1979 * are being replaced/deleted. This means the caller must
1980 * free any old entries somehow, or we end up with a memory
1981 * leak every time my_setenv() is called. One might think
1982 * one could directly manipulate environ[], like the UNIX code
1983 * above, but direct changes to environ are not allowed when
1984 * calling putenv(), since the RTLs maintain an internal
1985 * *copy* of environ[]. Bad, bad, *bad* stink.
1996 vallen = strlen(val);
1997 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
1998 (void)sprintf(envstr,"%s=%s",nam,val);
1999 (void)PerlEnv_putenv(envstr);
2001 safesysfree(oldstr);
2003 safesysfree(envstr); /* MSVCRT leaks without this */
2006 #else /* !USE_WIN32_RTL_ENV */
2008 register char *envstr;
2009 STRLEN len = strlen(nam) + 3;
2014 New(904, envstr, len, char);
2015 (void)sprintf(envstr,"%s=%s",nam,val);
2016 (void)PerlEnv_putenv(envstr);
2026 Perl_setenv_getix(pTHX_ char *nam)
2028 register I32 i, len = strlen(nam);
2030 for (i = 0; environ[i]; i++) {
2033 strnicmp(environ[i],nam,len) == 0
2035 strnEQ(environ[i],nam,len)
2037 && environ[i][len] == '=')
2038 break; /* strnEQ must come first to avoid */
2039 } /* potential SEGV's */
2045 #ifdef UNLINK_ALL_VERSIONS
2047 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2051 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2056 /* this is a drop-in replacement for bcopy() */
2057 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2059 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2063 if (from - to >= 0) {
2071 *(--to) = *(--from);
2077 /* this is a drop-in replacement for memset() */
2080 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2090 /* this is a drop-in replacement for bzero() */
2091 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2093 Perl_my_bzero(register char *loc, register I32 len)
2103 /* this is a drop-in replacement for memcmp() */
2104 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2106 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2108 register U8 *a = (U8 *)s1;
2109 register U8 *b = (U8 *)s2;
2113 if (tmp = *a++ - *b++)
2118 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2122 #ifdef USE_CHAR_VSPRINTF
2127 vsprintf(char *dest, const char *pat, char *args)
2131 fakebuf._ptr = dest;
2132 fakebuf._cnt = 32767;
2136 fakebuf._flag = _IOWRT|_IOSTRG;
2137 _doprnt(pat, args, &fakebuf); /* what a kludge */
2138 (void)putc('\0', &fakebuf);
2139 #ifdef USE_CHAR_VSPRINTF
2142 return 0; /* perl doesn't use return value */
2146 #endif /* HAS_VPRINTF */
2149 #if BYTEORDER != 0x4321
2151 Perl_my_swap(pTHX_ short s)
2153 #if (BYTEORDER & 1) == 0
2156 result = ((s & 255) << 8) + ((s >> 8) & 255);
2164 Perl_my_htonl(pTHX_ long l)
2168 char c[sizeof(long)];
2171 #if BYTEORDER == 0x1234
2172 u.c[0] = (l >> 24) & 255;
2173 u.c[1] = (l >> 16) & 255;
2174 u.c[2] = (l >> 8) & 255;
2178 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2179 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2184 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2185 u.c[o & 0xf] = (l >> s) & 255;
2193 Perl_my_ntohl(pTHX_ long l)
2197 char c[sizeof(long)];
2200 #if BYTEORDER == 0x1234
2201 u.c[0] = (l >> 24) & 255;
2202 u.c[1] = (l >> 16) & 255;
2203 u.c[2] = (l >> 8) & 255;
2207 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2208 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2215 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2216 l |= (u.c[o & 0xf] & 255) << s;
2223 #endif /* BYTEORDER != 0x4321 */
2227 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2228 * If these functions are defined,
2229 * the BYTEORDER is neither 0x1234 nor 0x4321.
2230 * However, this is not assumed.
2234 #define HTOV(name,type) \
2236 name (register type n) \
2240 char c[sizeof(type)]; \
2244 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2245 u.c[i] = (n >> s) & 0xFF; \
2250 #define VTOH(name,type) \
2252 name (register type n) \
2256 char c[sizeof(type)]; \
2262 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2263 n += (u.c[i] & 0xFF) << s; \
2268 #if defined(HAS_HTOVS) && !defined(htovs)
2271 #if defined(HAS_HTOVL) && !defined(htovl)
2274 #if defined(HAS_VTOHS) && !defined(vtohs)
2277 #if defined(HAS_VTOHL) && !defined(vtohl)
2281 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2282 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2284 Perl_my_popen(pTHX_ char *cmd, char *mode)
2287 register I32 This, that;
2290 I32 doexec = strNE(cmd,"-");
2294 PERL_FLUSHALL_FOR_CHILD;
2297 return my_syspopen(cmd,mode);
2300 This = (*mode == 'w');
2302 if (doexec && PL_tainting) {
2304 taint_proper("Insecure %s%s", "EXEC");
2306 if (PerlProc_pipe(p) < 0)
2308 if (doexec && PerlProc_pipe(pp) >= 0)
2310 while ((pid = (doexec?vfork():fork())) < 0) {
2311 if (errno != EAGAIN) {
2312 PerlLIO_close(p[This]);
2314 PerlLIO_close(pp[0]);
2315 PerlLIO_close(pp[1]);
2318 Perl_croak(aTHX_ "Can't fork");
2330 PerlLIO_close(p[THAT]);
2332 PerlLIO_close(pp[0]);
2333 #if defined(HAS_FCNTL) && defined(F_SETFD)
2334 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2337 if (p[THIS] != (*mode == 'r')) {
2338 PerlLIO_dup2(p[THIS], *mode == 'r');
2339 PerlLIO_close(p[THIS]);
2343 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2349 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2353 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2356 #endif /* defined OS2 */
2358 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2359 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2361 hv_clear(PL_pidstatus); /* we have no children */
2366 do_execfree(); /* free any memory malloced by child on vfork */
2367 PerlLIO_close(p[that]);
2369 PerlLIO_close(pp[1]);
2370 if (p[that] < p[This]) {
2371 PerlLIO_dup2(p[This], p[that]);
2372 PerlLIO_close(p[This]);
2375 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2376 (void)SvUPGRADE(sv,SVt_IV);
2378 PL_forkprocess = pid;
2379 if (did_pipes && pid > 0) {
2383 while (n < sizeof(int)) {
2384 n1 = PerlLIO_read(pp[0],
2385 (void*)(((char*)&errkid)+n),
2391 PerlLIO_close(pp[0]);
2393 if (n) { /* Error */
2394 if (n != sizeof(int))
2395 Perl_croak(aTHX_ "panic: kid popen errno read");
2396 errno = errkid; /* Propagate errno from kid */
2401 PerlLIO_close(pp[0]);
2402 return PerlIO_fdopen(p[This], mode);
2405 #if defined(atarist) || defined(DJGPP)
2408 Perl_my_popen(pTHX_ char *cmd, char *mode)
2410 /* Needs work for PerlIO ! */
2411 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2412 PERL_FLUSHALL_FOR_CHILD;
2413 return popen(PerlIO_exportFILE(cmd, 0), mode);
2417 #endif /* !DOSISH */
2421 Perl_dump_fds(pTHX_ char *s)
2424 struct stat tmpstatbuf;
2426 PerlIO_printf(Perl_debug_log,"%s", s);
2427 for (fd = 0; fd < 32; fd++) {
2428 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2429 PerlIO_printf(Perl_debug_log," %d",fd);
2431 PerlIO_printf(Perl_debug_log,"\n");
2433 #endif /* DUMP_FDS */
2437 dup2(int oldfd, int newfd)
2439 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2442 PerlLIO_close(newfd);
2443 return fcntl(oldfd, F_DUPFD, newfd);
2445 #define DUP2_MAX_FDS 256
2446 int fdtmp[DUP2_MAX_FDS];
2452 PerlLIO_close(newfd);
2453 /* good enough for low fd's... */
2454 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2455 if (fdx >= DUP2_MAX_FDS) {
2463 PerlLIO_close(fdtmp[--fdx]);
2470 #ifdef HAS_SIGACTION
2473 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2475 struct sigaction act, oact;
2477 act.sa_handler = handler;
2478 sigemptyset(&act.sa_mask);
2481 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2484 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2485 act.sa_flags |= SA_NOCLDWAIT;
2487 if (sigaction(signo, &act, &oact) == -1)
2490 return oact.sa_handler;
2494 Perl_rsignal_state(pTHX_ int signo)
2496 struct sigaction oact;
2498 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2501 return oact.sa_handler;
2505 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2507 struct sigaction act;
2509 act.sa_handler = handler;
2510 sigemptyset(&act.sa_mask);
2513 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2516 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2517 act.sa_flags |= SA_NOCLDWAIT;
2519 return sigaction(signo, &act, save);
2523 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2525 return sigaction(signo, save, (struct sigaction *)NULL);
2528 #else /* !HAS_SIGACTION */
2531 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2533 return PerlProc_signal(signo, handler);
2536 static int sig_trapped;
2546 Perl_rsignal_state(pTHX_ int signo)
2548 Sighandler_t oldsig;
2551 oldsig = PerlProc_signal(signo, sig_trap);
2552 PerlProc_signal(signo, oldsig);
2554 PerlProc_kill(PerlProc_getpid(), signo);
2559 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2561 *save = PerlProc_signal(signo, handler);
2562 return (*save == SIG_ERR) ? -1 : 0;
2566 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2568 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2571 #endif /* !HAS_SIGACTION */
2573 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2574 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2576 Perl_my_pclose(pTHX_ PerlIO *ptr)
2578 Sigsave_t hstat, istat, qstat;
2586 int saved_vaxc_errno;
2589 int saved_win32_errno;
2592 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2595 *svp = &PL_sv_undef;
2597 if (pid == -1) { /* Opened by popen. */
2598 return my_syspclose(ptr);
2601 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2602 saved_errno = errno;
2604 saved_vaxc_errno = vaxc$errno;
2607 saved_win32_errno = GetLastError();
2611 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2613 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2614 rsignal_save(SIGINT, SIG_IGN, &istat);
2615 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2617 pid2 = wait4pid(pid, &status, 0);
2618 } while (pid2 == -1 && errno == EINTR);
2619 rsignal_restore(SIGHUP, &hstat);
2620 rsignal_restore(SIGINT, &istat);
2621 rsignal_restore(SIGQUIT, &qstat);
2623 SETERRNO(saved_errno, saved_vaxc_errno);
2626 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2628 #endif /* !DOSISH */
2630 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2632 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2636 char spid[TYPE_CHARS(int)];
2641 sprintf(spid, "%"IVdf, (IV)pid);
2642 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2643 if (svp && *svp != &PL_sv_undef) {
2644 *statusp = SvIVX(*svp);
2645 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2652 hv_iterinit(PL_pidstatus);
2653 if ((entry = hv_iternext(PL_pidstatus))) {
2654 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2655 sv = hv_iterval(PL_pidstatus,entry);
2656 *statusp = SvIVX(sv);
2657 sprintf(spid, "%"IVdf, (IV)pid);
2658 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2663 # ifdef HAS_WAITPID_RUNTIME
2664 if (!HAS_WAITPID_RUNTIME)
2667 return PerlProc_waitpid(pid,statusp,flags);
2669 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2670 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2672 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2677 Perl_croak(aTHX_ "Can't do waitpid with flags");
2679 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2680 pidgone(result,*statusp);
2688 #endif /* !DOSISH || OS2 || WIN32 */
2692 Perl_pidgone(pTHX_ Pid_t pid, int status)
2695 char spid[TYPE_CHARS(int)];
2697 sprintf(spid, "%"IVdf, (IV)pid);
2698 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2699 (void)SvUPGRADE(sv,SVt_IV);
2704 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2707 int /* Cannot prototype with I32
2709 my_syspclose(PerlIO *ptr)
2712 Perl_my_pclose(pTHX_ PerlIO *ptr)
2715 /* Needs work for PerlIO ! */
2716 FILE *f = PerlIO_findFILE(ptr);
2717 I32 result = pclose(f);
2719 result = (result << 8) & 0xff00;
2721 PerlIO_releaseFILE(ptr,f);
2727 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2730 register const char *frombase = from;
2733 register const char c = *from;
2738 while (count-- > 0) {
2739 for (todo = len; todo > 0; todo--) {
2747 Perl_cast_ulong(pTHX_ NV f)
2752 # define BIGDOUBLE 2147483648.0
2754 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2757 return (unsigned long)f;
2759 return (unsigned long)along;
2763 /* Unfortunately, on some systems the cast_uv() function doesn't
2764 work with the system-supplied definition of ULONG_MAX. The
2765 comparison (f >= ULONG_MAX) always comes out true. It must be a
2766 problem with the compiler constant folding.
2768 In any case, this workaround should be fine on any two's complement
2769 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2771 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2774 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2776 -- Kenneth Albanowski <kjahds@kjahds.com>
2780 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2784 Perl_cast_i32(pTHX_ NV f)
2787 return (I32) I32_MAX;
2789 return (I32) I32_MIN;
2794 Perl_cast_iv(pTHX_ NV f)
2799 if (f >= (NV)UV_MAX)
2810 Perl_cast_uv(pTHX_ NV f)
2813 return (UV) MY_UV_MAX;
2827 Perl_same_dirent(pTHX_ char *a, char *b)
2829 char *fa = strrchr(a,'/');
2830 char *fb = strrchr(b,'/');
2831 struct stat tmpstatbuf1;
2832 struct stat tmpstatbuf2;
2833 SV *tmpsv = sv_newmortal();
2846 sv_setpv(tmpsv, ".");
2848 sv_setpvn(tmpsv, a, fa - a);
2849 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2852 sv_setpv(tmpsv, ".");
2854 sv_setpvn(tmpsv, b, fb - b);
2855 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2857 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2858 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2860 #endif /* !HAS_RENAME */
2863 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2865 register char *s = start;
2866 register NV rnv = 0.0;
2867 register UV ruv = 0;
2868 register bool seenb = FALSE;
2869 register bool overflowed = FALSE;
2871 for (; len-- && *s; s++) {
2872 if (!(*s == '0' || *s == '1')) {
2874 continue; /* Note: does not check for __ and the like. */
2875 if (seenb == FALSE && *s == 'b' && ruv == 0) {
2876 /* Disallow 0bbb0b0bbb... */
2882 if (ckWARN(WARN_DIGIT))
2883 Perl_warner(aTHX_ WARN_DIGIT,
2884 "Illegal binary digit '%c' ignored", *s);
2889 register UV xuv = ruv << 1;
2891 if ((xuv >> 1) != ruv) {
2895 if (ckWARN_d(WARN_OVERFLOW))
2896 Perl_warner(aTHX_ WARN_OVERFLOW,
2897 "Integer overflow in binary number");
2899 ruv = xuv | (*s - '0');
2903 /* If an NV has not enough bits in its mantissa to
2904 * represent an UV this summing of small low-order numbers
2905 * is a waste of time (because the NV cannot preserve
2906 * the low-order bits anyway): we could just remember when
2907 * did we overflow and in the end just multiply rnv by the
2914 if ( ( overflowed && rnv > 4294967295.0)
2916 || (!overflowed && ruv > 0xffffffff )
2920 if (ckWARN(WARN_PORTABLE))
2921 Perl_warner(aTHX_ WARN_PORTABLE,
2922 "Binary number > 0b11111111111111111111111111111111 non-portable");
2924 *retlen = s - start;
2929 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2931 register char *s = start;
2932 register NV rnv = 0.0;
2933 register UV ruv = 0;
2934 register bool overflowed = FALSE;
2936 for (; len-- && *s; s++) {
2937 if (!(*s >= '0' && *s <= '7')) {
2939 continue; /* Note: does not check for __ and the like. */
2941 /* Allow \octal to work the DWIM way (that is, stop scanning
2942 * as soon as non-octal characters are seen, complain only iff
2943 * someone seems to want to use the digits eight and nine). */
2944 if (*s == '8' || *s == '9') {
2946 if (ckWARN(WARN_DIGIT))
2947 Perl_warner(aTHX_ WARN_DIGIT,
2948 "Illegal octal digit '%c' ignored", *s);
2954 register UV xuv = ruv << 3;
2956 if ((xuv >> 3) != ruv) {
2960 if (ckWARN_d(WARN_OVERFLOW))
2961 Perl_warner(aTHX_ WARN_OVERFLOW,
2962 "Integer overflow in octal number");
2964 ruv = xuv | (*s - '0');
2968 /* If an NV has not enough bits in its mantissa to
2969 * represent an UV this summing of small low-order numbers
2970 * is a waste of time (because the NV cannot preserve
2971 * the low-order bits anyway): we could just remember when
2972 * did we overflow and in the end just multiply rnv by the
2973 * right amount of 8-tuples. */
2974 rnv += (NV)(*s - '0');
2979 if ( ( overflowed && rnv > 4294967295.0)
2981 || (!overflowed && ruv > 0xffffffff )
2985 if (ckWARN(WARN_PORTABLE))
2986 Perl_warner(aTHX_ WARN_PORTABLE,
2987 "Octal number > 037777777777 non-portable");
2989 *retlen = s - start;
2994 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
2996 register char *s = start;
2997 register NV rnv = 0.0;
2998 register UV ruv = 0;
2999 register bool seenx = FALSE;
3000 register bool overflowed = FALSE;
3003 for (; len-- && *s; s++) {
3004 hexdigit = strchr((char *) PL_hexdigit, *s);
3007 continue; /* Note: does not check for __ and the like. */
3008 if (seenx == FALSE && *s == 'x' && ruv == 0) {
3009 /* Disallow 0xxx0x0xxx... */
3015 if (ckWARN(WARN_DIGIT))
3016 Perl_warner(aTHX_ WARN_DIGIT,
3017 "Illegal hexadecimal digit '%c' ignored", *s);
3022 register UV xuv = ruv << 4;
3024 if ((xuv >> 4) != ruv) {
3028 if (ckWARN_d(WARN_OVERFLOW))
3029 Perl_warner(aTHX_ WARN_OVERFLOW,
3030 "Integer overflow in hexadecimal number");
3032 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3036 /* If an NV has not enough bits in its mantissa to
3037 * represent an UV this summing of small low-order numbers
3038 * is a waste of time (because the NV cannot preserve
3039 * the low-order bits anyway): we could just remember when
3040 * did we overflow and in the end just multiply rnv by the
3041 * right amount of 16-tuples. */
3042 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3047 if ( ( overflowed && rnv > 4294967295.0)
3049 || (!overflowed && ruv > 0xffffffff )
3053 if (ckWARN(WARN_PORTABLE))
3054 Perl_warner(aTHX_ WARN_PORTABLE,
3055 "Hexadecimal number > 0xffffffff non-portable");
3057 *retlen = s - start;
3062 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3065 char *xfound = Nullch;
3066 char *xfailed = Nullch;
3067 char tmpbuf[MAXPATHLEN];
3071 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3072 # define SEARCH_EXTS ".bat", ".cmd", NULL
3073 # define MAX_EXT_LEN 4
3076 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3077 # define MAX_EXT_LEN 4
3080 # define SEARCH_EXTS ".pl", ".com", NULL
3081 # define MAX_EXT_LEN 4
3083 /* additional extensions to try in each dir if scriptname not found */
3085 char *exts[] = { SEARCH_EXTS };
3086 char **ext = search_ext ? search_ext : exts;
3087 int extidx = 0, i = 0;
3088 char *curext = Nullch;
3090 # define MAX_EXT_LEN 0
3094 * If dosearch is true and if scriptname does not contain path
3095 * delimiters, search the PATH for scriptname.
3097 * If SEARCH_EXTS is also defined, will look for each
3098 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3099 * while searching the PATH.
3101 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3102 * proceeds as follows:
3103 * If DOSISH or VMSISH:
3104 * + look for ./scriptname{,.foo,.bar}
3105 * + search the PATH for scriptname{,.foo,.bar}
3108 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3109 * this will not look in '.' if it's not in the PATH)
3114 # ifdef ALWAYS_DEFTYPES
3115 len = strlen(scriptname);
3116 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3117 int hasdir, idx = 0, deftypes = 1;
3120 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3123 int hasdir, idx = 0, deftypes = 1;
3126 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3128 /* The first time through, just add SEARCH_EXTS to whatever we
3129 * already have, so we can check for default file types. */
3131 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3137 if ((strlen(tmpbuf) + strlen(scriptname)
3138 + MAX_EXT_LEN) >= sizeof tmpbuf)
3139 continue; /* don't search dir with too-long name */
3140 strcat(tmpbuf, scriptname);
3144 if (strEQ(scriptname, "-"))
3146 if (dosearch) { /* Look in '.' first. */
3147 char *cur = scriptname;
3149 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3151 if (strEQ(ext[i++],curext)) {
3152 extidx = -1; /* already has an ext */
3157 DEBUG_p(PerlIO_printf(Perl_debug_log,
3158 "Looking for %s\n",cur));
3159 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3160 && !S_ISDIR(PL_statbuf.st_mode)) {
3168 if (cur == scriptname) {
3169 len = strlen(scriptname);
3170 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3172 cur = strcpy(tmpbuf, scriptname);
3174 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3175 && strcpy(tmpbuf+len, ext[extidx++]));
3180 #ifdef MACOS_TRADITIONAL
3181 if (dosearch && !strchr(scriptname, ':') &&
3182 (s = PerlEnv_getenv("Commands")))
3184 if (dosearch && !strchr(scriptname, '/')
3186 && !strchr(scriptname, '\\')
3188 && (s = PerlEnv_getenv("PATH")))
3193 PL_bufend = s + strlen(s);
3194 while (s < PL_bufend) {
3195 #ifdef MACOS_TRADITIONAL
3196 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3200 #if defined(atarist) || defined(DOSISH)
3205 && *s != ';'; len++, s++) {
3206 if (len < sizeof tmpbuf)
3209 if (len < sizeof tmpbuf)
3211 #else /* ! (atarist || DOSISH) */
3212 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3215 #endif /* ! (atarist || DOSISH) */
3216 #endif /* MACOS_TRADITIONAL */
3219 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3220 continue; /* don't search dir with too-long name */
3221 #ifdef MACOS_TRADITIONAL
3222 if (len && tmpbuf[len - 1] != ':')
3223 tmpbuf[len++] = ':';
3226 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3227 && tmpbuf[len - 1] != '/'
3228 && tmpbuf[len - 1] != '\\'
3231 tmpbuf[len++] = '/';
3232 if (len == 2 && tmpbuf[0] == '.')
3235 (void)strcpy(tmpbuf + len, scriptname);
3239 len = strlen(tmpbuf);
3240 if (extidx > 0) /* reset after previous loop */
3244 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3245 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3246 if (S_ISDIR(PL_statbuf.st_mode)) {
3250 } while ( retval < 0 /* not there */
3251 && extidx>=0 && ext[extidx] /* try an extension? */
3252 && strcpy(tmpbuf+len, ext[extidx++])
3257 if (S_ISREG(PL_statbuf.st_mode)
3258 && cando(S_IRUSR,TRUE,&PL_statbuf)
3259 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3260 && cando(S_IXUSR,TRUE,&PL_statbuf)
3264 xfound = tmpbuf; /* bingo! */
3268 xfailed = savepv(tmpbuf);
3271 if (!xfound && !seen_dot && !xfailed &&
3272 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3273 || S_ISDIR(PL_statbuf.st_mode)))
3275 seen_dot = 1; /* Disable message. */
3277 if (flags & 1) { /* do or die? */
3278 Perl_croak(aTHX_ "Can't %s %s%s%s",
3279 (xfailed ? "execute" : "find"),
3280 (xfailed ? xfailed : scriptname),
3281 (xfailed ? "" : " on PATH"),
3282 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3284 scriptname = Nullch;
3288 scriptname = xfound;
3290 return (scriptname ? savepv(scriptname) : Nullch);
3293 #ifndef PERL_GET_CONTEXT_DEFINED
3296 Perl_get_context(void)
3298 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3299 # ifdef OLD_PTHREADS_API
3301 if (pthread_getspecific(PL_thr_key, &t))
3302 Perl_croak_nocontext("panic: pthread_getspecific");
3305 # ifdef I_MACH_CTHREADS
3306 return (void*)cthread_data(cthread_self());
3308 return (void*)pthread_getspecific(PL_thr_key);
3317 Perl_set_context(void *t)
3319 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3320 # ifdef I_MACH_CTHREADS
3321 cthread_set_data(cthread_self(), t);
3323 if (pthread_setspecific(PL_thr_key, t))
3324 Perl_croak_nocontext("panic: pthread_setspecific");
3329 #endif /* !PERL_GET_CONTEXT_DEFINED */
3334 /* Very simplistic scheduler for now */
3338 thr = thr->i.next_run;
3342 Perl_cond_init(pTHX_ perl_cond *cp)
3348 Perl_cond_signal(pTHX_ perl_cond *cp)
3351 perl_cond cond = *cp;
3356 /* Insert t in the runnable queue just ahead of us */
3357 t->i.next_run = thr->i.next_run;
3358 thr->i.next_run->i.prev_run = t;
3359 t->i.prev_run = thr;
3360 thr->i.next_run = t;
3361 thr->i.wait_queue = 0;
3362 /* Remove from the wait queue */
3368 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3371 perl_cond cond, cond_next;
3373 for (cond = *cp; cond; cond = cond_next) {
3375 /* Insert t in the runnable queue just ahead of us */
3376 t->i.next_run = thr->i.next_run;
3377 thr->i.next_run->i.prev_run = t;
3378 t->i.prev_run = thr;
3379 thr->i.next_run = t;
3380 thr->i.wait_queue = 0;
3381 /* Remove from the wait queue */
3382 cond_next = cond->next;
3389 Perl_cond_wait(pTHX_ perl_cond *cp)
3393 if (thr->i.next_run == thr)
3394 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3396 New(666, cond, 1, struct perl_wait_queue);
3400 thr->i.wait_queue = cond;
3401 /* Remove ourselves from runnable queue */
3402 thr->i.next_run->i.prev_run = thr->i.prev_run;
3403 thr->i.prev_run->i.next_run = thr->i.next_run;
3405 #endif /* FAKE_THREADS */
3408 Perl_condpair_magic(pTHX_ SV *sv)
3412 SvUPGRADE(sv, SVt_PVMG);
3413 mg = mg_find(sv, 'm');
3417 New(53, cp, 1, condpair_t);
3418 MUTEX_INIT(&cp->mutex);
3419 COND_INIT(&cp->owner_cond);
3420 COND_INIT(&cp->cond);
3422 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3423 mg = mg_find(sv, 'm');
3425 /* someone else beat us to initialising it */
3426 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3427 MUTEX_DESTROY(&cp->mutex);
3428 COND_DESTROY(&cp->owner_cond);
3429 COND_DESTROY(&cp->cond);
3433 sv_magic(sv, Nullsv, 'm', 0, 0);
3435 mg->mg_ptr = (char *)cp;
3436 mg->mg_len = sizeof(cp);
3437 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3438 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3439 "%p: condpair_magic %p\n", thr, sv));)
3446 * Make a new perl thread structure using t as a prototype. Some of the
3447 * fields for the new thread are copied from the prototype thread, t,
3448 * so t should not be running in perl at the time this function is
3449 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3450 * thread calling new_struct_thread) clearly satisfies this constraint.
3452 struct perl_thread *
3453 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3455 #if !defined(PERL_IMPLICIT_CONTEXT)
3456 struct perl_thread *thr;
3462 sv = newSVpvn("", 0);
3463 SvGROW(sv, sizeof(struct perl_thread) + 1);
3464 SvCUR_set(sv, sizeof(struct perl_thread));
3465 thr = (Thread) SvPVX(sv);
3467 memset(thr, 0xab, sizeof(struct perl_thread));
3474 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3476 Zero(thr, 1, struct perl_thread);
3482 PL_curcop = &PL_compiling;
3483 thr->interp = t->interp;
3484 thr->cvcache = newHV();
3485 thr->threadsv = newAV();
3486 thr->specific = newAV();
3487 thr->errsv = newSVpvn("", 0);
3488 thr->flags = THRf_R_JOINABLE;
3489 MUTEX_INIT(&thr->mutex);
3493 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3496 PL_statname = NEWSV(66,0);
3497 PL_errors = newSVpvn("", 0);
3499 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3500 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3501 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3502 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3503 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3505 PL_reginterp_cnt = 0;
3506 PL_lastscream = Nullsv;
3509 PL_reg_start_tmp = 0;
3510 PL_reg_start_tmpl = 0;
3511 PL_reg_poscache = Nullch;
3513 /* parent thread's data needs to be locked while we make copy */
3514 MUTEX_LOCK(&t->mutex);
3516 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3517 PL_protect = t->Tprotect;
3520 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3521 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3522 PL_curstash = t->Tcurstash; /* always be set to main? */
3524 PL_tainted = t->Ttainted;
3525 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3526 PL_nrs = newSVsv(t->Tnrs);
3527 PL_rs = SvREFCNT_inc(PL_nrs);
3528 PL_last_in_gv = Nullgv;
3529 PL_ofslen = t->Tofslen;
3530 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3531 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3532 PL_chopset = t->Tchopset;
3533 PL_bodytarget = newSVsv(t->Tbodytarget);
3534 PL_toptarget = newSVsv(t->Ttoptarget);
3535 if (t->Tformtarget == t->Ttoptarget)
3536 PL_formtarget = PL_toptarget;
3538 PL_formtarget = PL_bodytarget;
3540 /* Initialise all per-thread SVs that the template thread used */
3541 svp = AvARRAY(t->threadsv);
3542 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3543 if (*svp && *svp != &PL_sv_undef) {
3544 SV *sv = newSVsv(*svp);
3545 av_store(thr->threadsv, i, sv);
3546 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3547 DEBUG_S(PerlIO_printf(Perl_debug_log,
3548 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3552 thr->threadsvp = AvARRAY(thr->threadsv);
3554 MUTEX_LOCK(&PL_threads_mutex);
3556 thr->tid = ++PL_threadnum;
3557 thr->next = t->next;
3560 thr->next->prev = thr;
3561 MUTEX_UNLOCK(&PL_threads_mutex);
3563 /* done copying parent's state */
3564 MUTEX_UNLOCK(&t->mutex);
3566 #ifdef HAVE_THREAD_INTERN
3567 Perl_init_thread_intern(thr);
3568 #endif /* HAVE_THREAD_INTERN */
3571 #endif /* USE_THREADS */
3575 * This hack is to force load of "huge" support from libm.a
3576 * So it is in perl for (say) POSIX to use.
3577 * Needed for SunOS with Sun's 'acc' for example.
3586 #ifdef PERL_GLOBAL_STRUCT
3595 Perl_get_op_names(pTHX)
3601 Perl_get_op_descs(pTHX)
3607 Perl_get_no_modify(pTHX)
3609 return (char*)PL_no_modify;
3613 Perl_get_opargs(pTHX)
3619 Perl_get_ppaddr(pTHX)
3624 #ifndef HAS_GETENV_LEN
3626 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3628 char *env_trans = PerlEnv_getenv(env_elem);
3630 *len = strlen(env_trans);
3637 Perl_get_vtbl(pTHX_ int vtbl_id)
3639 MGVTBL* result = Null(MGVTBL*);
3643 result = &PL_vtbl_sv;
3646 result = &PL_vtbl_env;
3648 case want_vtbl_envelem:
3649 result = &PL_vtbl_envelem;
3652 result = &PL_vtbl_sig;
3654 case want_vtbl_sigelem:
3655 result = &PL_vtbl_sigelem;
3657 case want_vtbl_pack:
3658 result = &PL_vtbl_pack;
3660 case want_vtbl_packelem:
3661 result = &PL_vtbl_packelem;
3663 case want_vtbl_dbline:
3664 result = &PL_vtbl_dbline;
3667 result = &PL_vtbl_isa;
3669 case want_vtbl_isaelem:
3670 result = &PL_vtbl_isaelem;
3672 case want_vtbl_arylen:
3673 result = &PL_vtbl_arylen;
3675 case want_vtbl_glob:
3676 result = &PL_vtbl_glob;
3678 case want_vtbl_mglob:
3679 result = &PL_vtbl_mglob;
3681 case want_vtbl_nkeys:
3682 result = &PL_vtbl_nkeys;
3684 case want_vtbl_taint:
3685 result = &PL_vtbl_taint;
3687 case want_vtbl_substr:
3688 result = &PL_vtbl_substr;
3691 result = &PL_vtbl_vec;
3694 result = &PL_vtbl_pos;
3697 result = &PL_vtbl_bm;
3700 result = &PL_vtbl_fm;
3702 case want_vtbl_uvar:
3703 result = &PL_vtbl_uvar;
3706 case want_vtbl_mutex:
3707 result = &PL_vtbl_mutex;
3710 case want_vtbl_defelem:
3711 result = &PL_vtbl_defelem;
3713 case want_vtbl_regexp:
3714 result = &PL_vtbl_regexp;
3716 case want_vtbl_regdata:
3717 result = &PL_vtbl_regdata;
3719 case want_vtbl_regdatum:
3720 result = &PL_vtbl_regdatum;
3722 #ifdef USE_LOCALE_COLLATE
3723 case want_vtbl_collxfrm:
3724 result = &PL_vtbl_collxfrm;
3727 case want_vtbl_amagic:
3728 result = &PL_vtbl_amagic;
3730 case want_vtbl_amagicelem:
3731 result = &PL_vtbl_amagicelem;
3733 case want_vtbl_backref:
3734 result = &PL_vtbl_backref;
3741 Perl_my_fflush_all(pTHX)
3744 return PerlIO_flush(NULL);
3747 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3748 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3749 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3751 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3752 open_max = sysconf(_SC_OPEN_MAX);
3755 open_max = FOPEN_MAX;
3758 open_max = OPEN_MAX;
3769 for (i = 0; i < open_max; i++)
3770 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3771 STDIO_STREAM_ARRAY[i]._file < open_max &&
3772 STDIO_STREAM_ARRAY[i]._flag)
3773 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3777 SETERRNO(EBADF,RMS$_IFI);
3783 Perl_my_atof(pTHX_ const char* s)
3785 #ifdef USE_LOCALE_NUMERIC
3786 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3790 SET_NUMERIC_STANDARD();
3792 SET_NUMERIC_LOCAL();
3793 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3798 return Perl_atof(s);
3800 return Perl_atof(s);
3805 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3812 sv = sv_newmortal();
3813 gv_efullname3(sv, gv, Nullch);
3816 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3818 if (io && IoDIRP(io))
3819 Perl_warner(aTHX_ WARN_CLOSED,
3820 "(Are you trying to call %s() on dirhandle %s?)\n",