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))) {
1520 msg = newSVpvn(message, msglen);
1528 PUSHSTACKi(PERLSI_DIEHOOK);
1532 call_sv((SV*)cv, G_DISCARD);
1538 PL_restartop = die_where(message, msglen);
1539 DEBUG_S(PerlIO_printf(Perl_debug_log,
1540 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1541 thr, PL_restartop, was_in_eval, PL_top_env));
1542 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1544 return PL_restartop;
1547 #if defined(PERL_IMPLICIT_CONTEXT)
1549 Perl_die_nocontext(const char* pat, ...)
1554 va_start(args, pat);
1555 o = vdie(pat, &args);
1559 #endif /* PERL_IMPLICIT_CONTEXT */
1562 Perl_die(pTHX_ const char* pat, ...)
1566 va_start(args, pat);
1567 o = vdie(pat, &args);
1573 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1584 msv = vmess(pat, args);
1585 if (PL_errors && SvCUR(PL_errors)) {
1586 sv_catsv(PL_errors, msv);
1587 message = SvPV(PL_errors, msglen);
1588 SvCUR_set(PL_errors, 0);
1591 message = SvPV(msv,msglen);
1598 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1599 PTR2UV(thr), message));
1602 /* sv_2cv might call Perl_croak() */
1603 SV *olddiehook = PL_diehook;
1605 SAVESPTR(PL_diehook);
1606 PL_diehook = Nullsv;
1607 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1609 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1616 msg = newSVpvn(message, msglen);
1624 PUSHSTACKi(PERLSI_DIEHOOK);
1628 call_sv((SV*)cv, G_DISCARD);
1634 PL_restartop = die_where(message, msglen);
1639 /* SFIO can really mess with your errno */
1642 PerlIO *serr = Perl_error_log;
1644 PerlIO_write(serr, message, msglen);
1645 (void)PerlIO_flush(serr);
1653 #if defined(PERL_IMPLICIT_CONTEXT)
1655 Perl_croak_nocontext(const char *pat, ...)
1659 va_start(args, pat);
1664 #endif /* PERL_IMPLICIT_CONTEXT */
1669 This is the XSUB-writer's interface to Perl's C<die> function.
1670 Normally use this function the same way you use the C C<printf>
1671 function. See C<warn>.
1673 If you want to throw an exception object, assign the object to
1674 C<$@> and then pass C<Nullch> to croak():
1676 errsv = get_sv("@", TRUE);
1677 sv_setsv(errsv, exception_object);
1684 Perl_croak(pTHX_ const char *pat, ...)
1687 va_start(args, pat);
1694 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1703 msv = vmess(pat, args);
1704 message = SvPV(msv, msglen);
1707 /* sv_2cv might call Perl_warn() */
1709 SV *oldwarnhook = PL_warnhook;
1711 SAVESPTR(PL_warnhook);
1712 PL_warnhook = Nullsv;
1713 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1715 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1721 msg = newSVpvn(message, msglen);
1725 PUSHSTACKi(PERLSI_WARNHOOK);
1729 call_sv((SV*)cv, G_DISCARD);
1736 PerlIO *serr = Perl_error_log;
1738 PerlIO_write(serr, message, msglen);
1740 DEBUG_L(*message == '!'
1741 ? (xstat(message[1]=='!'
1742 ? (message[2]=='!' ? 2 : 1)
1747 (void)PerlIO_flush(serr);
1751 #if defined(PERL_IMPLICIT_CONTEXT)
1753 Perl_warn_nocontext(const char *pat, ...)
1757 va_start(args, pat);
1761 #endif /* PERL_IMPLICIT_CONTEXT */
1766 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1767 function the same way you use the C C<printf> function. See
1774 Perl_warn(pTHX_ const char *pat, ...)
1777 va_start(args, pat);
1782 #if defined(PERL_IMPLICIT_CONTEXT)
1784 Perl_warner_nocontext(U32 err, const char *pat, ...)
1788 va_start(args, pat);
1789 vwarner(err, pat, &args);
1792 #endif /* PERL_IMPLICIT_CONTEXT */
1795 Perl_warner(pTHX_ U32 err, const char* pat,...)
1798 va_start(args, pat);
1799 vwarner(err, pat, &args);
1804 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1814 msv = vmess(pat, args);
1815 message = SvPV(msv, msglen);
1819 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1820 #endif /* USE_THREADS */
1822 /* sv_2cv might call Perl_croak() */
1823 SV *olddiehook = PL_diehook;
1825 SAVESPTR(PL_diehook);
1826 PL_diehook = Nullsv;
1827 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1829 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1835 msg = newSVpvn(message, msglen);
1839 PUSHSTACKi(PERLSI_DIEHOOK);
1843 call_sv((SV*)cv, G_DISCARD);
1849 PL_restartop = die_where(message, msglen);
1853 PerlIO *serr = Perl_error_log;
1854 PerlIO_write(serr, message, msglen);
1855 (void)PerlIO_flush(serr);
1862 /* sv_2cv might call Perl_warn() */
1864 SV *oldwarnhook = PL_warnhook;
1866 SAVESPTR(PL_warnhook);
1867 PL_warnhook = Nullsv;
1868 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1870 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1876 msg = newSVpvn(message, msglen);
1880 PUSHSTACKi(PERLSI_WARNHOOK);
1884 call_sv((SV*)cv, G_DISCARD);
1891 PerlIO *serr = Perl_error_log;
1892 PerlIO_write(serr, message, msglen);
1896 (void)PerlIO_flush(serr);
1901 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1902 #if !defined(WIN32) && !defined(__CYGWIN__)
1904 Perl_my_setenv(pTHX_ char *nam, char *val)
1906 #ifndef PERL_USE_SAFE_PUTENV
1907 /* most putenv()s leak, so we manipulate environ directly */
1908 register I32 i=setenv_getix(nam); /* where does it go? */
1910 if (environ == PL_origenviron) { /* need we copy environment? */
1916 for (max = i; environ[max]; max++) ;
1917 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1918 for (j=0; j<max; j++) { /* copy environment */
1919 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1920 strcpy(tmpenv[j], environ[j]);
1922 tmpenv[max] = Nullch;
1923 environ = tmpenv; /* tell exec where it is now */
1926 safesysfree(environ[i]);
1927 while (environ[i]) {
1928 environ[i] = environ[i+1];
1933 if (!environ[i]) { /* does not exist yet */
1934 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1935 environ[i+1] = Nullch; /* make sure it's null terminated */
1938 safesysfree(environ[i]);
1939 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1941 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1943 #else /* PERL_USE_SAFE_PUTENV */
1946 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1947 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1948 (void)putenv(new_env);
1949 #endif /* PERL_USE_SAFE_PUTENV */
1952 #else /* WIN32 || __CYGWIN__ */
1953 #if defined(__CYGWIN__)
1955 * Save environ of perl.exe, currently Cygwin links in separate environ's
1956 * for each exe/dll. Probably should be a member of impure_ptr.
1958 static char ***Perl_main_environ;
1961 Perl_my_setenv_init(char ***penviron)
1963 Perl_main_environ = penviron;
1967 Perl_my_setenv(pTHX_ char *nam, char *val)
1969 /* You can not directly manipulate the environ[] array because
1970 * the routines do some additional work that syncs the Cygwin
1971 * environment with the Windows environment.
1973 char *oldstr = environ[setenv_getix(nam)];
1979 safesysfree(oldstr);
1982 setenv(nam, val, 1);
1983 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1984 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1985 safesysfree(oldstr);
1987 #else /* if WIN32 */
1990 Perl_my_setenv(pTHX_ char *nam,char *val)
1993 #ifdef USE_WIN32_RTL_ENV
1995 register char *envstr;
1996 STRLEN namlen = strlen(nam);
1998 char *oldstr = environ[setenv_getix(nam)];
2000 /* putenv() has totally broken semantics in both the Borland
2001 * and Microsoft CRTLs. They either store the passed pointer in
2002 * the environment without making a copy, or make a copy and don't
2003 * free it. And on top of that, they dont free() old entries that
2004 * are being replaced/deleted. This means the caller must
2005 * free any old entries somehow, or we end up with a memory
2006 * leak every time my_setenv() is called. One might think
2007 * one could directly manipulate environ[], like the UNIX code
2008 * above, but direct changes to environ are not allowed when
2009 * calling putenv(), since the RTLs maintain an internal
2010 * *copy* of environ[]. Bad, bad, *bad* stink.
2021 vallen = strlen(val);
2022 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2023 (void)sprintf(envstr,"%s=%s",nam,val);
2024 (void)PerlEnv_putenv(envstr);
2026 safesysfree(oldstr);
2028 safesysfree(envstr); /* MSVCRT leaks without this */
2031 #else /* !USE_WIN32_RTL_ENV */
2033 register char *envstr;
2034 STRLEN len = strlen(nam) + 3;
2039 New(904, envstr, len, char);
2040 (void)sprintf(envstr,"%s=%s",nam,val);
2041 (void)PerlEnv_putenv(envstr);
2051 Perl_setenv_getix(pTHX_ char *nam)
2053 register I32 i, len = strlen(nam);
2055 for (i = 0; environ[i]; i++) {
2058 strnicmp(environ[i],nam,len) == 0
2060 strnEQ(environ[i],nam,len)
2062 && environ[i][len] == '=')
2063 break; /* strnEQ must come first to avoid */
2064 } /* potential SEGV's */
2070 #ifdef UNLINK_ALL_VERSIONS
2072 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2076 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2081 /* this is a drop-in replacement for bcopy() */
2082 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2084 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2088 if (from - to >= 0) {
2096 *(--to) = *(--from);
2102 /* this is a drop-in replacement for memset() */
2105 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2115 /* this is a drop-in replacement for bzero() */
2116 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2118 Perl_my_bzero(register char *loc, register I32 len)
2128 /* this is a drop-in replacement for memcmp() */
2129 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2131 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2133 register U8 *a = (U8 *)s1;
2134 register U8 *b = (U8 *)s2;
2138 if (tmp = *a++ - *b++)
2143 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2147 #ifdef USE_CHAR_VSPRINTF
2152 vsprintf(char *dest, const char *pat, char *args)
2156 fakebuf._ptr = dest;
2157 fakebuf._cnt = 32767;
2161 fakebuf._flag = _IOWRT|_IOSTRG;
2162 _doprnt(pat, args, &fakebuf); /* what a kludge */
2163 (void)putc('\0', &fakebuf);
2164 #ifdef USE_CHAR_VSPRINTF
2167 return 0; /* perl doesn't use return value */
2171 #endif /* HAS_VPRINTF */
2174 #if BYTEORDER != 0x4321
2176 Perl_my_swap(pTHX_ short s)
2178 #if (BYTEORDER & 1) == 0
2181 result = ((s & 255) << 8) + ((s >> 8) & 255);
2189 Perl_my_htonl(pTHX_ long l)
2193 char c[sizeof(long)];
2196 #if BYTEORDER == 0x1234
2197 u.c[0] = (l >> 24) & 255;
2198 u.c[1] = (l >> 16) & 255;
2199 u.c[2] = (l >> 8) & 255;
2203 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2204 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2209 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2210 u.c[o & 0xf] = (l >> s) & 255;
2218 Perl_my_ntohl(pTHX_ long l)
2222 char c[sizeof(long)];
2225 #if BYTEORDER == 0x1234
2226 u.c[0] = (l >> 24) & 255;
2227 u.c[1] = (l >> 16) & 255;
2228 u.c[2] = (l >> 8) & 255;
2232 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2233 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2240 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2241 l |= (u.c[o & 0xf] & 255) << s;
2248 #endif /* BYTEORDER != 0x4321 */
2252 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2253 * If these functions are defined,
2254 * the BYTEORDER is neither 0x1234 nor 0x4321.
2255 * However, this is not assumed.
2259 #define HTOV(name,type) \
2261 name (register type n) \
2265 char c[sizeof(type)]; \
2269 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2270 u.c[i] = (n >> s) & 0xFF; \
2275 #define VTOH(name,type) \
2277 name (register type n) \
2281 char c[sizeof(type)]; \
2287 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2288 n += (u.c[i] & 0xFF) << s; \
2293 #if defined(HAS_HTOVS) && !defined(htovs)
2296 #if defined(HAS_HTOVL) && !defined(htovl)
2299 #if defined(HAS_VTOHS) && !defined(vtohs)
2302 #if defined(HAS_VTOHL) && !defined(vtohl)
2306 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2307 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2309 Perl_my_popen(pTHX_ char *cmd, char *mode)
2312 register I32 This, that;
2315 I32 doexec = strNE(cmd,"-");
2319 PERL_FLUSHALL_FOR_CHILD;
2322 return my_syspopen(cmd,mode);
2325 This = (*mode == 'w');
2327 if (doexec && PL_tainting) {
2329 taint_proper("Insecure %s%s", "EXEC");
2331 if (PerlProc_pipe(p) < 0)
2333 if (doexec && PerlProc_pipe(pp) >= 0)
2335 while ((pid = (doexec?vfork():fork())) < 0) {
2336 if (errno != EAGAIN) {
2337 PerlLIO_close(p[This]);
2339 PerlLIO_close(pp[0]);
2340 PerlLIO_close(pp[1]);
2343 Perl_croak(aTHX_ "Can't fork");
2355 PerlLIO_close(p[THAT]);
2357 PerlLIO_close(pp[0]);
2358 #if defined(HAS_FCNTL) && defined(F_SETFD)
2359 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2362 if (p[THIS] != (*mode == 'r')) {
2363 PerlLIO_dup2(p[THIS], *mode == 'r');
2364 PerlLIO_close(p[THIS]);
2368 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2374 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2378 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2381 #endif /* defined OS2 */
2383 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2384 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2386 hv_clear(PL_pidstatus); /* we have no children */
2391 do_execfree(); /* free any memory malloced by child on vfork */
2392 PerlLIO_close(p[that]);
2394 PerlLIO_close(pp[1]);
2395 if (p[that] < p[This]) {
2396 PerlLIO_dup2(p[This], p[that]);
2397 PerlLIO_close(p[This]);
2400 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2401 (void)SvUPGRADE(sv,SVt_IV);
2403 PL_forkprocess = pid;
2404 if (did_pipes && pid > 0) {
2408 while (n < sizeof(int)) {
2409 n1 = PerlLIO_read(pp[0],
2410 (void*)(((char*)&errkid)+n),
2416 PerlLIO_close(pp[0]);
2418 if (n) { /* Error */
2419 if (n != sizeof(int))
2420 Perl_croak(aTHX_ "panic: kid popen errno read");
2421 errno = errkid; /* Propagate errno from kid */
2426 PerlLIO_close(pp[0]);
2427 return PerlIO_fdopen(p[This], mode);
2430 #if defined(atarist) || defined(DJGPP)
2433 Perl_my_popen(pTHX_ char *cmd, char *mode)
2435 /* Needs work for PerlIO ! */
2436 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2437 PERL_FLUSHALL_FOR_CHILD;
2438 return popen(PerlIO_exportFILE(cmd, 0), mode);
2442 #endif /* !DOSISH */
2446 Perl_dump_fds(pTHX_ char *s)
2449 struct stat tmpstatbuf;
2451 PerlIO_printf(Perl_debug_log,"%s", s);
2452 for (fd = 0; fd < 32; fd++) {
2453 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2454 PerlIO_printf(Perl_debug_log," %d",fd);
2456 PerlIO_printf(Perl_debug_log,"\n");
2458 #endif /* DUMP_FDS */
2462 dup2(int oldfd, int newfd)
2464 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2467 PerlLIO_close(newfd);
2468 return fcntl(oldfd, F_DUPFD, newfd);
2470 #define DUP2_MAX_FDS 256
2471 int fdtmp[DUP2_MAX_FDS];
2477 PerlLIO_close(newfd);
2478 /* good enough for low fd's... */
2479 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2480 if (fdx >= DUP2_MAX_FDS) {
2488 PerlLIO_close(fdtmp[--fdx]);
2495 #ifdef HAS_SIGACTION
2498 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2500 struct sigaction act, oact;
2502 act.sa_handler = handler;
2503 sigemptyset(&act.sa_mask);
2506 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2509 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2510 act.sa_flags |= SA_NOCLDWAIT;
2512 if (sigaction(signo, &act, &oact) == -1)
2515 return oact.sa_handler;
2519 Perl_rsignal_state(pTHX_ int signo)
2521 struct sigaction oact;
2523 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2526 return oact.sa_handler;
2530 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2532 struct sigaction act;
2534 act.sa_handler = handler;
2535 sigemptyset(&act.sa_mask);
2538 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2541 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2542 act.sa_flags |= SA_NOCLDWAIT;
2544 return sigaction(signo, &act, save);
2548 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2550 return sigaction(signo, save, (struct sigaction *)NULL);
2553 #else /* !HAS_SIGACTION */
2556 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2558 return PerlProc_signal(signo, handler);
2561 static int sig_trapped;
2571 Perl_rsignal_state(pTHX_ int signo)
2573 Sighandler_t oldsig;
2576 oldsig = PerlProc_signal(signo, sig_trap);
2577 PerlProc_signal(signo, oldsig);
2579 PerlProc_kill(PerlProc_getpid(), signo);
2584 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2586 *save = PerlProc_signal(signo, handler);
2587 return (*save == SIG_ERR) ? -1 : 0;
2591 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2593 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2596 #endif /* !HAS_SIGACTION */
2598 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2599 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2601 Perl_my_pclose(pTHX_ PerlIO *ptr)
2603 Sigsave_t hstat, istat, qstat;
2611 int saved_vaxc_errno;
2614 int saved_win32_errno;
2617 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2620 *svp = &PL_sv_undef;
2622 if (pid == -1) { /* Opened by popen. */
2623 return my_syspclose(ptr);
2626 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2627 saved_errno = errno;
2629 saved_vaxc_errno = vaxc$errno;
2632 saved_win32_errno = GetLastError();
2636 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2638 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2639 rsignal_save(SIGINT, SIG_IGN, &istat);
2640 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2642 pid2 = wait4pid(pid, &status, 0);
2643 } while (pid2 == -1 && errno == EINTR);
2644 rsignal_restore(SIGHUP, &hstat);
2645 rsignal_restore(SIGINT, &istat);
2646 rsignal_restore(SIGQUIT, &qstat);
2648 SETERRNO(saved_errno, saved_vaxc_errno);
2651 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2653 #endif /* !DOSISH */
2655 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2657 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2661 char spid[TYPE_CHARS(int)];
2666 sprintf(spid, "%"IVdf, (IV)pid);
2667 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2668 if (svp && *svp != &PL_sv_undef) {
2669 *statusp = SvIVX(*svp);
2670 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2677 hv_iterinit(PL_pidstatus);
2678 if ((entry = hv_iternext(PL_pidstatus))) {
2679 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2680 sv = hv_iterval(PL_pidstatus,entry);
2681 *statusp = SvIVX(sv);
2682 sprintf(spid, "%"IVdf, (IV)pid);
2683 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2688 # ifdef HAS_WAITPID_RUNTIME
2689 if (!HAS_WAITPID_RUNTIME)
2692 return PerlProc_waitpid(pid,statusp,flags);
2694 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2695 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2697 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2702 Perl_croak(aTHX_ "Can't do waitpid with flags");
2704 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2705 pidgone(result,*statusp);
2713 #endif /* !DOSISH || OS2 || WIN32 */
2717 Perl_pidgone(pTHX_ Pid_t pid, int status)
2720 char spid[TYPE_CHARS(int)];
2722 sprintf(spid, "%"IVdf, (IV)pid);
2723 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2724 (void)SvUPGRADE(sv,SVt_IV);
2729 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2732 int /* Cannot prototype with I32
2734 my_syspclose(PerlIO *ptr)
2737 Perl_my_pclose(pTHX_ PerlIO *ptr)
2740 /* Needs work for PerlIO ! */
2741 FILE *f = PerlIO_findFILE(ptr);
2742 I32 result = pclose(f);
2744 result = (result << 8) & 0xff00;
2746 PerlIO_releaseFILE(ptr,f);
2752 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2755 register const char *frombase = from;
2758 register const char c = *from;
2763 while (count-- > 0) {
2764 for (todo = len; todo > 0; todo--) {
2772 Perl_cast_ulong(pTHX_ NV f)
2777 # define BIGDOUBLE 2147483648.0
2779 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2782 return (unsigned long)f;
2784 return (unsigned long)along;
2788 /* Unfortunately, on some systems the cast_uv() function doesn't
2789 work with the system-supplied definition of ULONG_MAX. The
2790 comparison (f >= ULONG_MAX) always comes out true. It must be a
2791 problem with the compiler constant folding.
2793 In any case, this workaround should be fine on any two's complement
2794 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2796 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2799 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2801 -- Kenneth Albanowski <kjahds@kjahds.com>
2805 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2809 Perl_cast_i32(pTHX_ NV f)
2812 return (I32) I32_MAX;
2814 return (I32) I32_MIN;
2819 Perl_cast_iv(pTHX_ NV f)
2824 if (f >= (NV)UV_MAX)
2835 Perl_cast_uv(pTHX_ NV f)
2838 return (UV) MY_UV_MAX;
2852 Perl_same_dirent(pTHX_ char *a, char *b)
2854 char *fa = strrchr(a,'/');
2855 char *fb = strrchr(b,'/');
2856 struct stat tmpstatbuf1;
2857 struct stat tmpstatbuf2;
2858 SV *tmpsv = sv_newmortal();
2871 sv_setpv(tmpsv, ".");
2873 sv_setpvn(tmpsv, a, fa - a);
2874 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2877 sv_setpv(tmpsv, ".");
2879 sv_setpvn(tmpsv, b, fb - b);
2880 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2882 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2883 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2885 #endif /* !HAS_RENAME */
2888 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2890 register char *s = start;
2891 register NV rnv = 0.0;
2892 register UV ruv = 0;
2893 register bool seenb = FALSE;
2894 register bool overflowed = FALSE;
2896 for (; len-- && *s; s++) {
2897 if (!(*s == '0' || *s == '1')) {
2898 if (*s == '_' && len && *retlen
2899 && (s[1] == '0' || s[1] == '1'))
2904 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2905 /* Disallow 0bbb0b0bbb... */
2911 if (ckWARN(WARN_DIGIT))
2912 Perl_warner(aTHX_ WARN_DIGIT,
2913 "Illegal binary digit '%c' ignored", *s);
2918 register UV xuv = ruv << 1;
2920 if ((xuv >> 1) != ruv) {
2924 if (ckWARN_d(WARN_OVERFLOW))
2925 Perl_warner(aTHX_ WARN_OVERFLOW,
2926 "Integer overflow in binary number");
2929 ruv = xuv | (*s - '0');
2933 /* If an NV has not enough bits in its mantissa to
2934 * represent an UV this summing of small low-order numbers
2935 * is a waste of time (because the NV cannot preserve
2936 * the low-order bits anyway): we could just remember when
2937 * did we overflow and in the end just multiply rnv by the
2944 if ( ( overflowed && rnv > 4294967295.0)
2946 || (!overflowed && ruv > 0xffffffff )
2950 if (ckWARN(WARN_PORTABLE))
2951 Perl_warner(aTHX_ WARN_PORTABLE,
2952 "Binary number > 0b11111111111111111111111111111111 non-portable");
2954 *retlen = s - start;
2959 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2961 register char *s = start;
2962 register NV rnv = 0.0;
2963 register UV ruv = 0;
2964 register bool overflowed = FALSE;
2966 for (; len-- && *s; s++) {
2967 if (!(*s >= '0' && *s <= '7')) {
2968 if (*s == '_' && len && *retlen
2969 && (s[1] >= '0' && s[1] <= '7'))
2975 /* Allow \octal to work the DWIM way (that is, stop scanning
2976 * as soon as non-octal characters are seen, complain only iff
2977 * someone seems to want to use the digits eight and nine). */
2978 if (*s == '8' || *s == '9') {
2980 if (ckWARN(WARN_DIGIT))
2981 Perl_warner(aTHX_ WARN_DIGIT,
2982 "Illegal octal digit '%c' ignored", *s);
2988 register UV xuv = ruv << 3;
2990 if ((xuv >> 3) != ruv) {
2994 if (ckWARN_d(WARN_OVERFLOW))
2995 Perl_warner(aTHX_ WARN_OVERFLOW,
2996 "Integer overflow in octal number");
2999 ruv = xuv | (*s - '0');
3003 /* If an NV has not enough bits in its mantissa to
3004 * represent an UV this summing of small low-order numbers
3005 * is a waste of time (because the NV cannot preserve
3006 * the low-order bits anyway): we could just remember when
3007 * did we overflow and in the end just multiply rnv by the
3008 * right amount of 8-tuples. */
3009 rnv += (NV)(*s - '0');
3014 if ( ( overflowed && rnv > 4294967295.0)
3016 || (!overflowed && ruv > 0xffffffff )
3020 if (ckWARN(WARN_PORTABLE))
3021 Perl_warner(aTHX_ WARN_PORTABLE,
3022 "Octal number > 037777777777 non-portable");
3024 *retlen = s - start;
3029 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3031 register char *s = start;
3032 register NV rnv = 0.0;
3033 register UV ruv = 0;
3034 register bool seenx = FALSE;
3035 register bool overflowed = FALSE;
3038 for (; len-- && *s; s++) {
3039 hexdigit = strchr((char *) PL_hexdigit, *s);
3041 if (*s == '_' && len && *retlen && s[1]
3042 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3047 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3048 /* Disallow 0xxx0x0xxx... */
3054 if (ckWARN(WARN_DIGIT))
3055 Perl_warner(aTHX_ WARN_DIGIT,
3056 "Illegal hexadecimal digit '%c' ignored", *s);
3061 register UV xuv = ruv << 4;
3063 if ((xuv >> 4) != ruv) {
3067 if (ckWARN_d(WARN_OVERFLOW))
3068 Perl_warner(aTHX_ WARN_OVERFLOW,
3069 "Integer overflow in hexadecimal number");
3072 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3076 /* If an NV has not enough bits in its mantissa to
3077 * represent an UV this summing of small low-order numbers
3078 * is a waste of time (because the NV cannot preserve
3079 * the low-order bits anyway): we could just remember when
3080 * did we overflow and in the end just multiply rnv by the
3081 * right amount of 16-tuples. */
3082 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3087 if ( ( overflowed && rnv > 4294967295.0)
3089 || (!overflowed && ruv > 0xffffffff )
3093 if (ckWARN(WARN_PORTABLE))
3094 Perl_warner(aTHX_ WARN_PORTABLE,
3095 "Hexadecimal number > 0xffffffff non-portable");
3097 *retlen = s - start;
3102 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3105 char *xfound = Nullch;
3106 char *xfailed = Nullch;
3107 char tmpbuf[MAXPATHLEN];
3111 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3112 # define SEARCH_EXTS ".bat", ".cmd", NULL
3113 # define MAX_EXT_LEN 4
3116 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3117 # define MAX_EXT_LEN 4
3120 # define SEARCH_EXTS ".pl", ".com", NULL
3121 # define MAX_EXT_LEN 4
3123 /* additional extensions to try in each dir if scriptname not found */
3125 char *exts[] = { SEARCH_EXTS };
3126 char **ext = search_ext ? search_ext : exts;
3127 int extidx = 0, i = 0;
3128 char *curext = Nullch;
3130 # define MAX_EXT_LEN 0
3134 * If dosearch is true and if scriptname does not contain path
3135 * delimiters, search the PATH for scriptname.
3137 * If SEARCH_EXTS is also defined, will look for each
3138 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3139 * while searching the PATH.
3141 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3142 * proceeds as follows:
3143 * If DOSISH or VMSISH:
3144 * + look for ./scriptname{,.foo,.bar}
3145 * + search the PATH for scriptname{,.foo,.bar}
3148 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3149 * this will not look in '.' if it's not in the PATH)
3154 # ifdef ALWAYS_DEFTYPES
3155 len = strlen(scriptname);
3156 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3157 int hasdir, idx = 0, deftypes = 1;
3160 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3163 int hasdir, idx = 0, deftypes = 1;
3166 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3168 /* The first time through, just add SEARCH_EXTS to whatever we
3169 * already have, so we can check for default file types. */
3171 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3177 if ((strlen(tmpbuf) + strlen(scriptname)
3178 + MAX_EXT_LEN) >= sizeof tmpbuf)
3179 continue; /* don't search dir with too-long name */
3180 strcat(tmpbuf, scriptname);
3184 if (strEQ(scriptname, "-"))
3186 if (dosearch) { /* Look in '.' first. */
3187 char *cur = scriptname;
3189 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3191 if (strEQ(ext[i++],curext)) {
3192 extidx = -1; /* already has an ext */
3197 DEBUG_p(PerlIO_printf(Perl_debug_log,
3198 "Looking for %s\n",cur));
3199 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3200 && !S_ISDIR(PL_statbuf.st_mode)) {
3208 if (cur == scriptname) {
3209 len = strlen(scriptname);
3210 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3212 cur = strcpy(tmpbuf, scriptname);
3214 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3215 && strcpy(tmpbuf+len, ext[extidx++]));
3220 #ifdef MACOS_TRADITIONAL
3221 if (dosearch && !strchr(scriptname, ':') &&
3222 (s = PerlEnv_getenv("Commands")))
3224 if (dosearch && !strchr(scriptname, '/')
3226 && !strchr(scriptname, '\\')
3228 && (s = PerlEnv_getenv("PATH")))
3233 PL_bufend = s + strlen(s);
3234 while (s < PL_bufend) {
3235 #ifdef MACOS_TRADITIONAL
3236 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3240 #if defined(atarist) || defined(DOSISH)
3245 && *s != ';'; len++, s++) {
3246 if (len < sizeof tmpbuf)
3249 if (len < sizeof tmpbuf)
3251 #else /* ! (atarist || DOSISH) */
3252 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3255 #endif /* ! (atarist || DOSISH) */
3256 #endif /* MACOS_TRADITIONAL */
3259 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3260 continue; /* don't search dir with too-long name */
3261 #ifdef MACOS_TRADITIONAL
3262 if (len && tmpbuf[len - 1] != ':')
3263 tmpbuf[len++] = ':';
3266 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3267 && tmpbuf[len - 1] != '/'
3268 && tmpbuf[len - 1] != '\\'
3271 tmpbuf[len++] = '/';
3272 if (len == 2 && tmpbuf[0] == '.')
3275 (void)strcpy(tmpbuf + len, scriptname);
3279 len = strlen(tmpbuf);
3280 if (extidx > 0) /* reset after previous loop */
3284 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3285 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3286 if (S_ISDIR(PL_statbuf.st_mode)) {
3290 } while ( retval < 0 /* not there */
3291 && extidx>=0 && ext[extidx] /* try an extension? */
3292 && strcpy(tmpbuf+len, ext[extidx++])
3297 if (S_ISREG(PL_statbuf.st_mode)
3298 && cando(S_IRUSR,TRUE,&PL_statbuf)
3299 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3300 && cando(S_IXUSR,TRUE,&PL_statbuf)
3304 xfound = tmpbuf; /* bingo! */
3308 xfailed = savepv(tmpbuf);
3311 if (!xfound && !seen_dot && !xfailed &&
3312 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3313 || S_ISDIR(PL_statbuf.st_mode)))
3315 seen_dot = 1; /* Disable message. */
3317 if (flags & 1) { /* do or die? */
3318 Perl_croak(aTHX_ "Can't %s %s%s%s",
3319 (xfailed ? "execute" : "find"),
3320 (xfailed ? xfailed : scriptname),
3321 (xfailed ? "" : " on PATH"),
3322 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3324 scriptname = Nullch;
3328 scriptname = xfound;
3330 return (scriptname ? savepv(scriptname) : Nullch);
3333 #ifndef PERL_GET_CONTEXT_DEFINED
3336 Perl_get_context(void)
3338 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3339 # ifdef OLD_PTHREADS_API
3341 if (pthread_getspecific(PL_thr_key, &t))
3342 Perl_croak_nocontext("panic: pthread_getspecific");
3345 # ifdef I_MACH_CTHREADS
3346 return (void*)cthread_data(cthread_self());
3348 return (void*)pthread_getspecific(PL_thr_key);
3357 Perl_set_context(void *t)
3359 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3360 # ifdef I_MACH_CTHREADS
3361 cthread_set_data(cthread_self(), t);
3363 if (pthread_setspecific(PL_thr_key, t))
3364 Perl_croak_nocontext("panic: pthread_setspecific");
3369 #endif /* !PERL_GET_CONTEXT_DEFINED */
3374 /* Very simplistic scheduler for now */
3378 thr = thr->i.next_run;
3382 Perl_cond_init(pTHX_ perl_cond *cp)
3388 Perl_cond_signal(pTHX_ perl_cond *cp)
3391 perl_cond cond = *cp;
3396 /* Insert t in the runnable queue just ahead of us */
3397 t->i.next_run = thr->i.next_run;
3398 thr->i.next_run->i.prev_run = t;
3399 t->i.prev_run = thr;
3400 thr->i.next_run = t;
3401 thr->i.wait_queue = 0;
3402 /* Remove from the wait queue */
3408 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3411 perl_cond cond, cond_next;
3413 for (cond = *cp; cond; cond = cond_next) {
3415 /* Insert t in the runnable queue just ahead of us */
3416 t->i.next_run = thr->i.next_run;
3417 thr->i.next_run->i.prev_run = t;
3418 t->i.prev_run = thr;
3419 thr->i.next_run = t;
3420 thr->i.wait_queue = 0;
3421 /* Remove from the wait queue */
3422 cond_next = cond->next;
3429 Perl_cond_wait(pTHX_ perl_cond *cp)
3433 if (thr->i.next_run == thr)
3434 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3436 New(666, cond, 1, struct perl_wait_queue);
3440 thr->i.wait_queue = cond;
3441 /* Remove ourselves from runnable queue */
3442 thr->i.next_run->i.prev_run = thr->i.prev_run;
3443 thr->i.prev_run->i.next_run = thr->i.next_run;
3445 #endif /* FAKE_THREADS */
3448 Perl_condpair_magic(pTHX_ SV *sv)
3452 SvUPGRADE(sv, SVt_PVMG);
3453 mg = mg_find(sv, 'm');
3457 New(53, cp, 1, condpair_t);
3458 MUTEX_INIT(&cp->mutex);
3459 COND_INIT(&cp->owner_cond);
3460 COND_INIT(&cp->cond);
3462 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3463 mg = mg_find(sv, 'm');
3465 /* someone else beat us to initialising it */
3466 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3467 MUTEX_DESTROY(&cp->mutex);
3468 COND_DESTROY(&cp->owner_cond);
3469 COND_DESTROY(&cp->cond);
3473 sv_magic(sv, Nullsv, 'm', 0, 0);
3475 mg->mg_ptr = (char *)cp;
3476 mg->mg_len = sizeof(cp);
3477 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3478 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3479 "%p: condpair_magic %p\n", thr, sv));)
3486 * Make a new perl thread structure using t as a prototype. Some of the
3487 * fields for the new thread are copied from the prototype thread, t,
3488 * so t should not be running in perl at the time this function is
3489 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3490 * thread calling new_struct_thread) clearly satisfies this constraint.
3492 struct perl_thread *
3493 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3495 #if !defined(PERL_IMPLICIT_CONTEXT)
3496 struct perl_thread *thr;
3502 sv = newSVpvn("", 0);
3503 SvGROW(sv, sizeof(struct perl_thread) + 1);
3504 SvCUR_set(sv, sizeof(struct perl_thread));
3505 thr = (Thread) SvPVX(sv);
3507 memset(thr, 0xab, sizeof(struct perl_thread));
3514 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3516 Zero(thr, 1, struct perl_thread);
3522 PL_curcop = &PL_compiling;
3523 thr->interp = t->interp;
3524 thr->cvcache = newHV();
3525 thr->threadsv = newAV();
3526 thr->specific = newAV();
3527 thr->errsv = newSVpvn("", 0);
3528 thr->flags = THRf_R_JOINABLE;
3529 MUTEX_INIT(&thr->mutex);
3533 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3536 PL_statname = NEWSV(66,0);
3537 PL_errors = newSVpvn("", 0);
3539 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3540 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3541 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3542 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3543 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3545 PL_reginterp_cnt = 0;
3546 PL_lastscream = Nullsv;
3549 PL_reg_start_tmp = 0;
3550 PL_reg_start_tmpl = 0;
3551 PL_reg_poscache = Nullch;
3553 /* parent thread's data needs to be locked while we make copy */
3554 MUTEX_LOCK(&t->mutex);
3556 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3557 PL_protect = t->Tprotect;
3560 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3561 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3562 PL_curstash = t->Tcurstash; /* always be set to main? */
3564 PL_tainted = t->Ttainted;
3565 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3566 PL_nrs = newSVsv(t->Tnrs);
3567 PL_rs = SvREFCNT_inc(PL_nrs);
3568 PL_last_in_gv = Nullgv;
3569 PL_ofslen = t->Tofslen;
3570 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3571 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3572 PL_chopset = t->Tchopset;
3573 PL_bodytarget = newSVsv(t->Tbodytarget);
3574 PL_toptarget = newSVsv(t->Ttoptarget);
3575 if (t->Tformtarget == t->Ttoptarget)
3576 PL_formtarget = PL_toptarget;
3578 PL_formtarget = PL_bodytarget;
3580 /* Initialise all per-thread SVs that the template thread used */
3581 svp = AvARRAY(t->threadsv);
3582 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3583 if (*svp && *svp != &PL_sv_undef) {
3584 SV *sv = newSVsv(*svp);
3585 av_store(thr->threadsv, i, sv);
3586 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3587 DEBUG_S(PerlIO_printf(Perl_debug_log,
3588 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3592 thr->threadsvp = AvARRAY(thr->threadsv);
3594 MUTEX_LOCK(&PL_threads_mutex);
3596 thr->tid = ++PL_threadnum;
3597 thr->next = t->next;
3600 thr->next->prev = thr;
3601 MUTEX_UNLOCK(&PL_threads_mutex);
3603 /* done copying parent's state */
3604 MUTEX_UNLOCK(&t->mutex);
3606 #ifdef HAVE_THREAD_INTERN
3607 Perl_init_thread_intern(thr);
3608 #endif /* HAVE_THREAD_INTERN */
3611 #endif /* USE_THREADS */
3613 #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
3615 * This hack is to force load of "huge" support from libm.a
3616 * So it is in perl for (say) POSIX to use.
3617 * Needed for SunOS with Sun's 'acc' for example.
3622 # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3629 #ifdef PERL_GLOBAL_STRUCT
3638 Perl_get_op_names(pTHX)
3644 Perl_get_op_descs(pTHX)
3650 Perl_get_no_modify(pTHX)
3652 return (char*)PL_no_modify;
3656 Perl_get_opargs(pTHX)
3662 Perl_get_ppaddr(pTHX)
3667 #ifndef HAS_GETENV_LEN
3669 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3671 char *env_trans = PerlEnv_getenv(env_elem);
3673 *len = strlen(env_trans);
3680 Perl_get_vtbl(pTHX_ int vtbl_id)
3682 MGVTBL* result = Null(MGVTBL*);
3686 result = &PL_vtbl_sv;
3689 result = &PL_vtbl_env;
3691 case want_vtbl_envelem:
3692 result = &PL_vtbl_envelem;
3695 result = &PL_vtbl_sig;
3697 case want_vtbl_sigelem:
3698 result = &PL_vtbl_sigelem;
3700 case want_vtbl_pack:
3701 result = &PL_vtbl_pack;
3703 case want_vtbl_packelem:
3704 result = &PL_vtbl_packelem;
3706 case want_vtbl_dbline:
3707 result = &PL_vtbl_dbline;
3710 result = &PL_vtbl_isa;
3712 case want_vtbl_isaelem:
3713 result = &PL_vtbl_isaelem;
3715 case want_vtbl_arylen:
3716 result = &PL_vtbl_arylen;
3718 case want_vtbl_glob:
3719 result = &PL_vtbl_glob;
3721 case want_vtbl_mglob:
3722 result = &PL_vtbl_mglob;
3724 case want_vtbl_nkeys:
3725 result = &PL_vtbl_nkeys;
3727 case want_vtbl_taint:
3728 result = &PL_vtbl_taint;
3730 case want_vtbl_substr:
3731 result = &PL_vtbl_substr;
3734 result = &PL_vtbl_vec;
3737 result = &PL_vtbl_pos;
3740 result = &PL_vtbl_bm;
3743 result = &PL_vtbl_fm;
3745 case want_vtbl_uvar:
3746 result = &PL_vtbl_uvar;
3749 case want_vtbl_mutex:
3750 result = &PL_vtbl_mutex;
3753 case want_vtbl_defelem:
3754 result = &PL_vtbl_defelem;
3756 case want_vtbl_regexp:
3757 result = &PL_vtbl_regexp;
3759 case want_vtbl_regdata:
3760 result = &PL_vtbl_regdata;
3762 case want_vtbl_regdatum:
3763 result = &PL_vtbl_regdatum;
3765 #ifdef USE_LOCALE_COLLATE
3766 case want_vtbl_collxfrm:
3767 result = &PL_vtbl_collxfrm;
3770 case want_vtbl_amagic:
3771 result = &PL_vtbl_amagic;
3773 case want_vtbl_amagicelem:
3774 result = &PL_vtbl_amagicelem;
3776 case want_vtbl_backref:
3777 result = &PL_vtbl_backref;
3784 Perl_my_fflush_all(pTHX)
3787 return PerlIO_flush(NULL);
3790 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3791 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3792 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3794 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3795 open_max = sysconf(_SC_OPEN_MAX);
3798 open_max = FOPEN_MAX;
3801 open_max = OPEN_MAX;
3812 for (i = 0; i < open_max; i++)
3813 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3814 STDIO_STREAM_ARRAY[i]._file < open_max &&
3815 STDIO_STREAM_ARRAY[i]._flag)
3816 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3820 SETERRNO(EBADF,RMS$_IFI);
3826 Perl_my_atof(pTHX_ const char* s)
3828 #ifdef USE_LOCALE_NUMERIC
3829 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3833 SET_NUMERIC_STANDARD();
3835 SET_NUMERIC_LOCAL();
3836 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3841 return Perl_atof(s);
3843 return Perl_atof(s);
3848 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3855 sv = sv_newmortal();
3856 gv_efullname3(sv, gv, Nullch);
3859 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3861 if (io && IoDIRP(io))
3862 Perl_warner(aTHX_ WARN_CLOSED,
3863 "\t(Are you trying to call %s() on dirhandle %s?)\n",