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 = (Malloc_t)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 = (Malloc_t)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 = (Malloc_t)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 &&
1004 memEQ((char *)big, (char *)little, littlelen - 1))))
1009 if (littlelen <= 2) { /* Special-cased */
1011 if (littlelen == 1) {
1012 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1013 /* Know that bigend != big. */
1014 if (bigend[-1] == '\n')
1015 return (char *)(bigend - 1);
1016 return (char *) bigend;
1019 while (s < bigend) {
1024 if (SvTAIL(littlestr))
1025 return (char *) bigend;
1029 return (char*)big; /* Cannot be SvTAIL! */
1031 /* littlelen is 2 */
1032 if (SvTAIL(littlestr) && !multiline) {
1033 if (bigend[-1] == '\n' && bigend[-2] == *little)
1034 return (char*)bigend - 2;
1035 if (bigend[-1] == *little)
1036 return (char*)bigend - 1;
1040 /* This should be better than FBM if c1 == c2, and almost
1041 as good otherwise: maybe better since we do less indirection.
1042 And we save a lot of memory by caching no table. */
1043 register unsigned char c1 = little[0];
1044 register unsigned char c2 = little[1];
1049 while (s <= bigend) {
1052 return (char*)s - 1;
1059 goto check_1char_anchor;
1070 goto check_1char_anchor;
1073 while (s <= bigend) {
1076 return (char*)s - 1;
1078 goto check_1char_anchor;
1087 check_1char_anchor: /* One char and anchor! */
1088 if (SvTAIL(littlestr) && (*bigend == *little))
1089 return (char *)bigend; /* bigend is already decremented. */
1092 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1093 s = bigend - littlelen;
1094 if (s >= big && bigend[-1] == '\n' && *s == *little
1095 /* Automatically of length > 2 */
1096 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1098 return (char*)s; /* how sweet it is */
1101 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1103 return (char*)s + 1; /* how sweet it is */
1107 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1108 char *b = ninstr((char*)big,(char*)bigend,
1109 (char*)little, (char*)little + littlelen);
1111 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1112 /* Chop \n from littlestr: */
1113 s = bigend - littlelen + 1;
1115 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1124 { /* Do actual FBM. */
1125 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1126 register unsigned char *oldlittle;
1128 if (littlelen > bigend - big)
1130 --littlelen; /* Last char found by table lookup */
1132 s = big + littlelen;
1133 little += littlelen; /* last char */
1140 if ((tmp = table[*s])) {
1142 if (bigend - s > tmp) {
1148 if ((s += tmp) < bigend)
1153 else { /* less expensive than calling strncmp() */
1154 register unsigned char *olds = s;
1159 if (*--s == *--little)
1161 s = olds + 1; /* here we pay the price for failure */
1163 if (s < bigend) /* fake up continue to outer loop */
1171 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1172 && memEQ((char *)(bigend - littlelen),
1173 (char *)(oldlittle - littlelen), littlelen) )
1174 return (char*)bigend - littlelen;
1179 /* start_shift, end_shift are positive quantities which give offsets
1180 of ends of some substring of bigstr.
1181 If `last' we want the last occurence.
1182 old_posp is the way of communication between consequent calls if
1183 the next call needs to find the .
1184 The initial *old_posp should be -1.
1186 Note that we take into account SvTAIL, so one can get extra
1187 optimizations if _ALL flag is set.
1190 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1191 if PL_multiline. In fact if !PL_multiline the autoritative answer
1192 is not supported yet. */
1195 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1198 register unsigned char *s, *x;
1199 register unsigned char *big;
1201 register I32 previous;
1203 register unsigned char *little;
1204 register I32 stop_pos;
1205 register unsigned char *littleend;
1209 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1210 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1212 if ( BmRARE(littlestr) == '\n'
1213 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1214 little = (unsigned char *)(SvPVX(littlestr));
1215 littleend = little + SvCUR(littlestr);
1222 little = (unsigned char *)(SvPVX(littlestr));
1223 littleend = little + SvCUR(littlestr);
1225 /* The value of pos we can start at: */
1226 previous = BmPREVIOUS(littlestr);
1227 big = (unsigned char *)(SvPVX(bigstr));
1228 /* The value of pos we can stop at: */
1229 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1230 if (previous + start_shift > stop_pos) {
1231 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1235 while (pos < previous + start_shift) {
1236 if (!(pos += PL_screamnext[pos]))
1241 if (pos >= stop_pos) break;
1242 if (big[pos-previous] != first)
1244 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1250 if (s == littleend) {
1252 if (!last) return (char *)(big+pos-previous);
1255 } while ( pos += PL_screamnext[pos] );
1256 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1257 #else /* !POINTERRIGOR */
1260 if (pos >= stop_pos) break;
1261 if (big[pos] != first)
1263 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1269 if (s == littleend) {
1271 if (!last) return (char *)(big+pos);
1274 } while ( pos += PL_screamnext[pos] );
1276 return (char *)(big+(*old_posp));
1277 #endif /* POINTERRIGOR */
1279 if (!SvTAIL(littlestr) || (end_shift > 0))
1281 /* Ignore the trailing "\n". This code is not microoptimized */
1282 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1283 stop_pos = littleend - little; /* Actual littlestr len */
1288 && ((stop_pos == 1) ||
1289 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
1295 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1297 register U8 *a = (U8 *)s1;
1298 register U8 *b = (U8 *)s2;
1300 if (*a != *b && *a != PL_fold[*b])
1308 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1310 register U8 *a = (U8 *)s1;
1311 register U8 *b = (U8 *)s2;
1313 if (*a != *b && *a != PL_fold_locale[*b])
1320 /* copy a string to a safe spot */
1325 Copy a string to a safe spot. This does not use an SV.
1331 Perl_savepv(pTHX_ const char *sv)
1333 register char *newaddr;
1335 New(902,newaddr,strlen(sv)+1,char);
1336 (void)strcpy(newaddr,sv);
1340 /* same thing but with a known length */
1345 Copy a string to a safe spot. The C<len> indicates number of bytes to
1346 copy. This does not use an SV.
1352 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1354 register char *newaddr;
1356 New(903,newaddr,len+1,char);
1357 Copy(sv,newaddr,len,char); /* might not be null terminated */
1358 newaddr[len] = '\0'; /* is now */
1362 /* the SV for Perl_form() and mess() is not kept in an arena */
1372 return sv_2mortal(newSVpvn("",0));
1377 /* Create as PVMG now, to avoid any upgrading later */
1378 New(905, sv, 1, SV);
1379 Newz(905, any, 1, XPVMG);
1380 SvFLAGS(sv) = SVt_PVMG;
1381 SvANY(sv) = (void*)any;
1382 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1387 #if defined(PERL_IMPLICIT_CONTEXT)
1389 Perl_form_nocontext(const char* pat, ...)
1394 va_start(args, pat);
1395 retval = vform(pat, &args);
1399 #endif /* PERL_IMPLICIT_CONTEXT */
1402 Perl_form(pTHX_ const char* pat, ...)
1406 va_start(args, pat);
1407 retval = vform(pat, &args);
1413 Perl_vform(pTHX_ const char *pat, va_list *args)
1415 SV *sv = mess_alloc();
1416 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1420 #if defined(PERL_IMPLICIT_CONTEXT)
1422 Perl_mess_nocontext(const char *pat, ...)
1427 va_start(args, pat);
1428 retval = vmess(pat, &args);
1432 #endif /* PERL_IMPLICIT_CONTEXT */
1435 Perl_mess(pTHX_ const char *pat, ...)
1439 va_start(args, pat);
1440 retval = vmess(pat, &args);
1446 Perl_vmess(pTHX_ const char *pat, va_list *args)
1448 SV *sv = mess_alloc();
1449 static char dgd[] = " during global destruction.\n";
1451 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1452 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1454 if (CopLINE(PL_curcop))
1455 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1456 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1457 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1458 bool line_mode = (RsSIMPLE(PL_rs) &&
1459 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1460 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1461 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1462 line_mode ? "line" : "chunk",
1463 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1467 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1469 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1475 Perl_vdie(pTHX_ const char* pat, va_list *args)
1479 int was_in_eval = PL_in_eval;
1486 DEBUG_S(PerlIO_printf(Perl_debug_log,
1487 "%p: die: curstack = %p, mainstack = %p\n",
1488 thr, PL_curstack, PL_mainstack));
1491 msv = vmess(pat, args);
1492 if (PL_errors && SvCUR(PL_errors)) {
1493 sv_catsv(PL_errors, msv);
1494 message = SvPV(PL_errors, msglen);
1495 SvCUR_set(PL_errors, 0);
1498 message = SvPV(msv,msglen);
1505 DEBUG_S(PerlIO_printf(Perl_debug_log,
1506 "%p: die: message = %s\ndiehook = %p\n",
1507 thr, message, PL_diehook));
1509 /* sv_2cv might call Perl_croak() */
1510 SV *olddiehook = PL_diehook;
1512 SAVESPTR(PL_diehook);
1513 PL_diehook = Nullsv;
1514 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1516 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1523 msg = newSVpvn(message, msglen);
1531 PUSHSTACKi(PERLSI_DIEHOOK);
1535 call_sv((SV*)cv, G_DISCARD);
1541 PL_restartop = die_where(message, msglen);
1542 DEBUG_S(PerlIO_printf(Perl_debug_log,
1543 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1544 thr, PL_restartop, was_in_eval, PL_top_env));
1545 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1547 return PL_restartop;
1550 #if defined(PERL_IMPLICIT_CONTEXT)
1552 Perl_die_nocontext(const char* pat, ...)
1557 va_start(args, pat);
1558 o = vdie(pat, &args);
1562 #endif /* PERL_IMPLICIT_CONTEXT */
1565 Perl_die(pTHX_ const char* pat, ...)
1569 va_start(args, pat);
1570 o = vdie(pat, &args);
1576 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1587 msv = vmess(pat, args);
1588 if (PL_errors && SvCUR(PL_errors)) {
1589 sv_catsv(PL_errors, msv);
1590 message = SvPV(PL_errors, msglen);
1591 SvCUR_set(PL_errors, 0);
1594 message = SvPV(msv,msglen);
1601 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1602 PTR2UV(thr), message));
1605 /* sv_2cv might call Perl_croak() */
1606 SV *olddiehook = PL_diehook;
1608 SAVESPTR(PL_diehook);
1609 PL_diehook = Nullsv;
1610 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1612 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1619 msg = newSVpvn(message, msglen);
1627 PUSHSTACKi(PERLSI_DIEHOOK);
1631 call_sv((SV*)cv, G_DISCARD);
1637 PL_restartop = die_where(message, msglen);
1642 /* SFIO can really mess with your errno */
1645 PerlIO *serr = Perl_error_log;
1647 PerlIO_write(serr, message, msglen);
1648 (void)PerlIO_flush(serr);
1656 #if defined(PERL_IMPLICIT_CONTEXT)
1658 Perl_croak_nocontext(const char *pat, ...)
1662 va_start(args, pat);
1667 #endif /* PERL_IMPLICIT_CONTEXT */
1672 This is the XSUB-writer's interface to Perl's C<die> function.
1673 Normally use this function the same way you use the C C<printf>
1674 function. See C<warn>.
1676 If you want to throw an exception object, assign the object to
1677 C<$@> and then pass C<Nullch> to croak():
1679 errsv = get_sv("@", TRUE);
1680 sv_setsv(errsv, exception_object);
1687 Perl_croak(pTHX_ const char *pat, ...)
1690 va_start(args, pat);
1697 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1706 msv = vmess(pat, args);
1707 message = SvPV(msv, msglen);
1710 /* sv_2cv might call Perl_warn() */
1712 SV *oldwarnhook = PL_warnhook;
1714 SAVESPTR(PL_warnhook);
1715 PL_warnhook = Nullsv;
1716 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1718 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1724 msg = newSVpvn(message, msglen);
1728 PUSHSTACKi(PERLSI_WARNHOOK);
1732 call_sv((SV*)cv, G_DISCARD);
1739 PerlIO *serr = Perl_error_log;
1741 PerlIO_write(serr, message, msglen);
1743 DEBUG_L(*message == '!'
1744 ? (xstat(message[1]=='!'
1745 ? (message[2]=='!' ? 2 : 1)
1750 (void)PerlIO_flush(serr);
1754 #if defined(PERL_IMPLICIT_CONTEXT)
1756 Perl_warn_nocontext(const char *pat, ...)
1760 va_start(args, pat);
1764 #endif /* PERL_IMPLICIT_CONTEXT */
1769 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1770 function the same way you use the C C<printf> function. See
1777 Perl_warn(pTHX_ const char *pat, ...)
1780 va_start(args, pat);
1785 #if defined(PERL_IMPLICIT_CONTEXT)
1787 Perl_warner_nocontext(U32 err, const char *pat, ...)
1791 va_start(args, pat);
1792 vwarner(err, pat, &args);
1795 #endif /* PERL_IMPLICIT_CONTEXT */
1798 Perl_warner(pTHX_ U32 err, const char* pat,...)
1801 va_start(args, pat);
1802 vwarner(err, pat, &args);
1807 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1817 msv = vmess(pat, args);
1818 message = SvPV(msv, msglen);
1822 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1823 #endif /* USE_THREADS */
1825 /* sv_2cv might call Perl_croak() */
1826 SV *olddiehook = PL_diehook;
1828 SAVESPTR(PL_diehook);
1829 PL_diehook = Nullsv;
1830 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1832 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1838 msg = newSVpvn(message, msglen);
1842 PUSHSTACKi(PERLSI_DIEHOOK);
1846 call_sv((SV*)cv, G_DISCARD);
1852 PL_restartop = die_where(message, msglen);
1856 PerlIO *serr = Perl_error_log;
1857 PerlIO_write(serr, message, msglen);
1858 (void)PerlIO_flush(serr);
1865 /* sv_2cv might call Perl_warn() */
1867 SV *oldwarnhook = PL_warnhook;
1869 SAVESPTR(PL_warnhook);
1870 PL_warnhook = Nullsv;
1871 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1873 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1879 msg = newSVpvn(message, msglen);
1883 PUSHSTACKi(PERLSI_WARNHOOK);
1887 call_sv((SV*)cv, G_DISCARD);
1894 PerlIO *serr = Perl_error_log;
1895 PerlIO_write(serr, message, msglen);
1899 (void)PerlIO_flush(serr);
1904 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1905 #if !defined(WIN32) && !defined(__CYGWIN__)
1907 Perl_my_setenv(pTHX_ char *nam, char *val)
1909 #ifndef PERL_USE_SAFE_PUTENV
1910 /* most putenv()s leak, so we manipulate environ directly */
1911 register I32 i=setenv_getix(nam); /* where does it go? */
1913 if (environ == PL_origenviron) { /* need we copy environment? */
1919 for (max = i; environ[max]; max++) ;
1920 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1921 for (j=0; j<max; j++) { /* copy environment */
1922 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1923 strcpy(tmpenv[j], environ[j]);
1925 tmpenv[max] = Nullch;
1926 environ = tmpenv; /* tell exec where it is now */
1929 safesysfree(environ[i]);
1930 while (environ[i]) {
1931 environ[i] = environ[i+1];
1936 if (!environ[i]) { /* does not exist yet */
1937 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1938 environ[i+1] = Nullch; /* make sure it's null terminated */
1941 safesysfree(environ[i]);
1942 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1944 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1946 #else /* PERL_USE_SAFE_PUTENV */
1949 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1950 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1951 (void)putenv(new_env);
1952 #endif /* PERL_USE_SAFE_PUTENV */
1955 #else /* WIN32 || __CYGWIN__ */
1956 #if defined(__CYGWIN__)
1958 * Save environ of perl.exe, currently Cygwin links in separate environ's
1959 * for each exe/dll. Probably should be a member of impure_ptr.
1961 static char ***Perl_main_environ;
1964 Perl_my_setenv_init(char ***penviron)
1966 Perl_main_environ = penviron;
1970 Perl_my_setenv(pTHX_ char *nam, char *val)
1972 /* You can not directly manipulate the environ[] array because
1973 * the routines do some additional work that syncs the Cygwin
1974 * environment with the Windows environment.
1976 char *oldstr = environ[setenv_getix(nam)];
1982 safesysfree(oldstr);
1985 setenv(nam, val, 1);
1986 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1987 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1988 safesysfree(oldstr);
1990 #else /* if WIN32 */
1993 Perl_my_setenv(pTHX_ char *nam,char *val)
1996 #ifdef USE_WIN32_RTL_ENV
1998 register char *envstr;
1999 STRLEN namlen = strlen(nam);
2001 char *oldstr = environ[setenv_getix(nam)];
2003 /* putenv() has totally broken semantics in both the Borland
2004 * and Microsoft CRTLs. They either store the passed pointer in
2005 * the environment without making a copy, or make a copy and don't
2006 * free it. And on top of that, they dont free() old entries that
2007 * are being replaced/deleted. This means the caller must
2008 * free any old entries somehow, or we end up with a memory
2009 * leak every time my_setenv() is called. One might think
2010 * one could directly manipulate environ[], like the UNIX code
2011 * above, but direct changes to environ are not allowed when
2012 * calling putenv(), since the RTLs maintain an internal
2013 * *copy* of environ[]. Bad, bad, *bad* stink.
2024 vallen = strlen(val);
2025 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2026 (void)sprintf(envstr,"%s=%s",nam,val);
2027 (void)PerlEnv_putenv(envstr);
2029 safesysfree(oldstr);
2031 safesysfree(envstr); /* MSVCRT leaks without this */
2034 #else /* !USE_WIN32_RTL_ENV */
2036 register char *envstr;
2037 STRLEN len = strlen(nam) + 3;
2042 New(904, envstr, len, char);
2043 (void)sprintf(envstr,"%s=%s",nam,val);
2044 (void)PerlEnv_putenv(envstr);
2054 Perl_setenv_getix(pTHX_ char *nam)
2056 register I32 i, len = strlen(nam);
2058 for (i = 0; environ[i]; i++) {
2061 strnicmp(environ[i],nam,len) == 0
2063 strnEQ(environ[i],nam,len)
2065 && environ[i][len] == '=')
2066 break; /* strnEQ must come first to avoid */
2067 } /* potential SEGV's */
2073 #ifdef UNLINK_ALL_VERSIONS
2075 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2079 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2084 /* this is a drop-in replacement for bcopy() */
2085 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2087 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2091 if (from - to >= 0) {
2099 *(--to) = *(--from);
2105 /* this is a drop-in replacement for memset() */
2108 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2118 /* this is a drop-in replacement for bzero() */
2119 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2121 Perl_my_bzero(register char *loc, register I32 len)
2131 /* this is a drop-in replacement for memcmp() */
2132 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2134 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2136 register U8 *a = (U8 *)s1;
2137 register U8 *b = (U8 *)s2;
2141 if (tmp = *a++ - *b++)
2146 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2150 #ifdef USE_CHAR_VSPRINTF
2155 vsprintf(char *dest, const char *pat, char *args)
2159 fakebuf._ptr = dest;
2160 fakebuf._cnt = 32767;
2164 fakebuf._flag = _IOWRT|_IOSTRG;
2165 _doprnt(pat, args, &fakebuf); /* what a kludge */
2166 (void)putc('\0', &fakebuf);
2167 #ifdef USE_CHAR_VSPRINTF
2170 return 0; /* perl doesn't use return value */
2174 #endif /* HAS_VPRINTF */
2177 #if BYTEORDER != 0x4321
2179 Perl_my_swap(pTHX_ short s)
2181 #if (BYTEORDER & 1) == 0
2184 result = ((s & 255) << 8) + ((s >> 8) & 255);
2192 Perl_my_htonl(pTHX_ long l)
2196 char c[sizeof(long)];
2199 #if BYTEORDER == 0x1234
2200 u.c[0] = (l >> 24) & 255;
2201 u.c[1] = (l >> 16) & 255;
2202 u.c[2] = (l >> 8) & 255;
2206 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2207 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2212 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2213 u.c[o & 0xf] = (l >> s) & 255;
2221 Perl_my_ntohl(pTHX_ long l)
2225 char c[sizeof(long)];
2228 #if BYTEORDER == 0x1234
2229 u.c[0] = (l >> 24) & 255;
2230 u.c[1] = (l >> 16) & 255;
2231 u.c[2] = (l >> 8) & 255;
2235 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2236 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2243 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2244 l |= (u.c[o & 0xf] & 255) << s;
2251 #endif /* BYTEORDER != 0x4321 */
2255 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2256 * If these functions are defined,
2257 * the BYTEORDER is neither 0x1234 nor 0x4321.
2258 * However, this is not assumed.
2262 #define HTOV(name,type) \
2264 name (register type n) \
2268 char c[sizeof(type)]; \
2272 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2273 u.c[i] = (n >> s) & 0xFF; \
2278 #define VTOH(name,type) \
2280 name (register type n) \
2284 char c[sizeof(type)]; \
2290 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2291 n += (u.c[i] & 0xFF) << s; \
2296 #if defined(HAS_HTOVS) && !defined(htovs)
2299 #if defined(HAS_HTOVL) && !defined(htovl)
2302 #if defined(HAS_VTOHS) && !defined(vtohs)
2305 #if defined(HAS_VTOHL) && !defined(vtohl)
2309 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2310 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2312 Perl_my_popen(pTHX_ char *cmd, char *mode)
2315 register I32 This, that;
2318 I32 doexec = strNE(cmd,"-");
2322 PERL_FLUSHALL_FOR_CHILD;
2325 return my_syspopen(aTHX_ cmd,mode);
2328 This = (*mode == 'w');
2330 if (doexec && PL_tainting) {
2332 taint_proper("Insecure %s%s", "EXEC");
2334 if (PerlProc_pipe(p) < 0)
2336 if (doexec && PerlProc_pipe(pp) >= 0)
2338 while ((pid = (doexec?vfork():fork())) < 0) {
2339 if (errno != EAGAIN) {
2340 PerlLIO_close(p[This]);
2342 PerlLIO_close(pp[0]);
2343 PerlLIO_close(pp[1]);
2346 Perl_croak(aTHX_ "Can't fork");
2358 PerlLIO_close(p[THAT]);
2360 PerlLIO_close(pp[0]);
2361 #if defined(HAS_FCNTL) && defined(F_SETFD)
2362 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2365 if (p[THIS] != (*mode == 'r')) {
2366 PerlLIO_dup2(p[THIS], *mode == 'r');
2367 PerlLIO_close(p[THIS]);
2371 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2377 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2381 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2384 #endif /* defined OS2 */
2386 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2387 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2389 hv_clear(PL_pidstatus); /* we have no children */
2394 do_execfree(); /* free any memory malloced by child on vfork */
2395 PerlLIO_close(p[that]);
2397 PerlLIO_close(pp[1]);
2398 if (p[that] < p[This]) {
2399 PerlLIO_dup2(p[This], p[that]);
2400 PerlLIO_close(p[This]);
2403 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2404 (void)SvUPGRADE(sv,SVt_IV);
2406 PL_forkprocess = pid;
2407 if (did_pipes && pid > 0) {
2411 while (n < sizeof(int)) {
2412 n1 = PerlLIO_read(pp[0],
2413 (void*)(((char*)&errkid)+n),
2419 PerlLIO_close(pp[0]);
2421 if (n) { /* Error */
2422 if (n != sizeof(int))
2423 Perl_croak(aTHX_ "panic: kid popen errno read");
2424 errno = errkid; /* Propagate errno from kid */
2429 PerlLIO_close(pp[0]);
2430 return PerlIO_fdopen(p[This], mode);
2433 #if defined(atarist) || defined(DJGPP)
2436 Perl_my_popen(pTHX_ char *cmd, char *mode)
2438 /* Needs work for PerlIO ! */
2439 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2440 PERL_FLUSHALL_FOR_CHILD;
2441 return popen(PerlIO_exportFILE(cmd, 0), mode);
2445 #endif /* !DOSISH */
2449 Perl_dump_fds(pTHX_ char *s)
2452 struct stat tmpstatbuf;
2454 PerlIO_printf(Perl_debug_log,"%s", s);
2455 for (fd = 0; fd < 32; fd++) {
2456 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2457 PerlIO_printf(Perl_debug_log," %d",fd);
2459 PerlIO_printf(Perl_debug_log,"\n");
2461 #endif /* DUMP_FDS */
2465 dup2(int oldfd, int newfd)
2467 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2470 PerlLIO_close(newfd);
2471 return fcntl(oldfd, F_DUPFD, newfd);
2473 #define DUP2_MAX_FDS 256
2474 int fdtmp[DUP2_MAX_FDS];
2480 PerlLIO_close(newfd);
2481 /* good enough for low fd's... */
2482 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2483 if (fdx >= DUP2_MAX_FDS) {
2491 PerlLIO_close(fdtmp[--fdx]);
2498 #ifdef HAS_SIGACTION
2501 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2503 struct sigaction act, oact;
2505 act.sa_handler = handler;
2506 sigemptyset(&act.sa_mask);
2509 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2512 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2513 act.sa_flags |= SA_NOCLDWAIT;
2515 if (sigaction(signo, &act, &oact) == -1)
2518 return oact.sa_handler;
2522 Perl_rsignal_state(pTHX_ int signo)
2524 struct sigaction oact;
2526 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2529 return oact.sa_handler;
2533 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2535 struct sigaction act;
2537 act.sa_handler = handler;
2538 sigemptyset(&act.sa_mask);
2541 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2544 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2545 act.sa_flags |= SA_NOCLDWAIT;
2547 return sigaction(signo, &act, save);
2551 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2553 return sigaction(signo, save, (struct sigaction *)NULL);
2556 #else /* !HAS_SIGACTION */
2559 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2561 return PerlProc_signal(signo, handler);
2564 static int sig_trapped;
2574 Perl_rsignal_state(pTHX_ int signo)
2576 Sighandler_t oldsig;
2579 oldsig = PerlProc_signal(signo, sig_trap);
2580 PerlProc_signal(signo, oldsig);
2582 PerlProc_kill(PerlProc_getpid(), signo);
2587 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2589 *save = PerlProc_signal(signo, handler);
2590 return (*save == SIG_ERR) ? -1 : 0;
2594 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2596 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2599 #endif /* !HAS_SIGACTION */
2601 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2602 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2604 Perl_my_pclose(pTHX_ PerlIO *ptr)
2606 Sigsave_t hstat, istat, qstat;
2614 int saved_vaxc_errno;
2617 int saved_win32_errno;
2620 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2623 *svp = &PL_sv_undef;
2625 if (pid == -1) { /* Opened by popen. */
2626 return my_syspclose(ptr);
2629 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2630 saved_errno = errno;
2632 saved_vaxc_errno = vaxc$errno;
2635 saved_win32_errno = GetLastError();
2639 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2641 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2642 rsignal_save(SIGINT, SIG_IGN, &istat);
2643 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2645 pid2 = wait4pid(pid, &status, 0);
2646 } while (pid2 == -1 && errno == EINTR);
2647 rsignal_restore(SIGHUP, &hstat);
2648 rsignal_restore(SIGINT, &istat);
2649 rsignal_restore(SIGQUIT, &qstat);
2651 SETERRNO(saved_errno, saved_vaxc_errno);
2654 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2656 #endif /* !DOSISH */
2658 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2660 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2664 char spid[TYPE_CHARS(int)];
2669 sprintf(spid, "%"IVdf, (IV)pid);
2670 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2671 if (svp && *svp != &PL_sv_undef) {
2672 *statusp = SvIVX(*svp);
2673 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2680 hv_iterinit(PL_pidstatus);
2681 if ((entry = hv_iternext(PL_pidstatus))) {
2682 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2683 sv = hv_iterval(PL_pidstatus,entry);
2684 *statusp = SvIVX(sv);
2685 sprintf(spid, "%"IVdf, (IV)pid);
2686 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2691 # ifdef HAS_WAITPID_RUNTIME
2692 if (!HAS_WAITPID_RUNTIME)
2695 return PerlProc_waitpid(pid,statusp,flags);
2697 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2698 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2700 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2705 Perl_croak(aTHX_ "Can't do waitpid with flags");
2707 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2708 pidgone(result,*statusp);
2716 #endif /* !DOSISH || OS2 || WIN32 */
2720 Perl_pidgone(pTHX_ Pid_t pid, int status)
2723 char spid[TYPE_CHARS(int)];
2725 sprintf(spid, "%"IVdf, (IV)pid);
2726 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2727 (void)SvUPGRADE(sv,SVt_IV);
2732 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2735 int /* Cannot prototype with I32
2737 my_syspclose(PerlIO *ptr)
2740 Perl_my_pclose(pTHX_ PerlIO *ptr)
2743 /* Needs work for PerlIO ! */
2744 FILE *f = PerlIO_findFILE(ptr);
2745 I32 result = pclose(f);
2747 result = (result << 8) & 0xff00;
2749 PerlIO_releaseFILE(ptr,f);
2755 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2758 register const char *frombase = from;
2761 register const char c = *from;
2766 while (count-- > 0) {
2767 for (todo = len; todo > 0; todo--) {
2775 Perl_cast_ulong(pTHX_ NV f)
2780 # define BIGDOUBLE 2147483648.0
2782 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2785 return (unsigned long)f;
2787 return (unsigned long)along;
2791 /* Unfortunately, on some systems the cast_uv() function doesn't
2792 work with the system-supplied definition of ULONG_MAX. The
2793 comparison (f >= ULONG_MAX) always comes out true. It must be a
2794 problem with the compiler constant folding.
2796 In any case, this workaround should be fine on any two's complement
2797 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2799 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2802 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2804 -- Kenneth Albanowski <kjahds@kjahds.com>
2808 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2812 Perl_cast_i32(pTHX_ NV f)
2815 return (I32) I32_MAX;
2817 return (I32) I32_MIN;
2822 Perl_cast_iv(pTHX_ NV f)
2827 if (f >= (NV)UV_MAX)
2838 Perl_cast_uv(pTHX_ NV f)
2841 return (UV) MY_UV_MAX;
2855 Perl_same_dirent(pTHX_ char *a, char *b)
2857 char *fa = strrchr(a,'/');
2858 char *fb = strrchr(b,'/');
2859 struct stat tmpstatbuf1;
2860 struct stat tmpstatbuf2;
2861 SV *tmpsv = sv_newmortal();
2874 sv_setpv(tmpsv, ".");
2876 sv_setpvn(tmpsv, a, fa - a);
2877 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2880 sv_setpv(tmpsv, ".");
2882 sv_setpvn(tmpsv, b, fb - b);
2883 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2885 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2886 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2888 #endif /* !HAS_RENAME */
2891 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2893 register char *s = start;
2894 register NV rnv = 0.0;
2895 register UV ruv = 0;
2896 register bool seenb = FALSE;
2897 register bool overflowed = FALSE;
2899 for (; len-- && *s; s++) {
2900 if (!(*s == '0' || *s == '1')) {
2901 if (*s == '_' && len && *retlen
2902 && (s[1] == '0' || s[1] == '1'))
2907 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2908 /* Disallow 0bbb0b0bbb... */
2914 if (ckWARN(WARN_DIGIT))
2915 Perl_warner(aTHX_ WARN_DIGIT,
2916 "Illegal binary digit '%c' ignored", *s);
2921 register UV xuv = ruv << 1;
2923 if ((xuv >> 1) != ruv) {
2927 if (ckWARN_d(WARN_OVERFLOW))
2928 Perl_warner(aTHX_ WARN_OVERFLOW,
2929 "Integer overflow in binary number");
2932 ruv = xuv | (*s - '0');
2936 /* If an NV has not enough bits in its mantissa to
2937 * represent an UV this summing of small low-order numbers
2938 * is a waste of time (because the NV cannot preserve
2939 * the low-order bits anyway): we could just remember when
2940 * did we overflow and in the end just multiply rnv by the
2947 if ( ( overflowed && rnv > 4294967295.0)
2949 || (!overflowed && ruv > 0xffffffff )
2953 if (ckWARN(WARN_PORTABLE))
2954 Perl_warner(aTHX_ WARN_PORTABLE,
2955 "Binary number > 0b11111111111111111111111111111111 non-portable");
2957 *retlen = s - start;
2962 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2964 register char *s = start;
2965 register NV rnv = 0.0;
2966 register UV ruv = 0;
2967 register bool overflowed = FALSE;
2969 for (; len-- && *s; s++) {
2970 if (!(*s >= '0' && *s <= '7')) {
2971 if (*s == '_' && len && *retlen
2972 && (s[1] >= '0' && s[1] <= '7'))
2978 /* Allow \octal to work the DWIM way (that is, stop scanning
2979 * as soon as non-octal characters are seen, complain only iff
2980 * someone seems to want to use the digits eight and nine). */
2981 if (*s == '8' || *s == '9') {
2983 if (ckWARN(WARN_DIGIT))
2984 Perl_warner(aTHX_ WARN_DIGIT,
2985 "Illegal octal digit '%c' ignored", *s);
2991 register UV xuv = ruv << 3;
2993 if ((xuv >> 3) != ruv) {
2997 if (ckWARN_d(WARN_OVERFLOW))
2998 Perl_warner(aTHX_ WARN_OVERFLOW,
2999 "Integer overflow in octal number");
3002 ruv = xuv | (*s - '0');
3006 /* If an NV has not enough bits in its mantissa to
3007 * represent an UV this summing of small low-order numbers
3008 * is a waste of time (because the NV cannot preserve
3009 * the low-order bits anyway): we could just remember when
3010 * did we overflow and in the end just multiply rnv by the
3011 * right amount of 8-tuples. */
3012 rnv += (NV)(*s - '0');
3017 if ( ( overflowed && rnv > 4294967295.0)
3019 || (!overflowed && ruv > 0xffffffff )
3023 if (ckWARN(WARN_PORTABLE))
3024 Perl_warner(aTHX_ WARN_PORTABLE,
3025 "Octal number > 037777777777 non-portable");
3027 *retlen = s - start;
3032 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3034 register char *s = start;
3035 register NV rnv = 0.0;
3036 register UV ruv = 0;
3037 register bool seenx = FALSE;
3038 register bool overflowed = FALSE;
3041 for (; len-- && *s; s++) {
3042 hexdigit = strchr((char *) PL_hexdigit, *s);
3044 if (*s == '_' && len && *retlen && s[1]
3045 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3050 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3051 /* Disallow 0xxx0x0xxx... */
3057 if (ckWARN(WARN_DIGIT))
3058 Perl_warner(aTHX_ WARN_DIGIT,
3059 "Illegal hexadecimal digit '%c' ignored", *s);
3064 register UV xuv = ruv << 4;
3066 if ((xuv >> 4) != ruv) {
3070 if (ckWARN_d(WARN_OVERFLOW))
3071 Perl_warner(aTHX_ WARN_OVERFLOW,
3072 "Integer overflow in hexadecimal number");
3075 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3079 /* If an NV has not enough bits in its mantissa to
3080 * represent an UV this summing of small low-order numbers
3081 * is a waste of time (because the NV cannot preserve
3082 * the low-order bits anyway): we could just remember when
3083 * did we overflow and in the end just multiply rnv by the
3084 * right amount of 16-tuples. */
3085 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3090 if ( ( overflowed && rnv > 4294967295.0)
3092 || (!overflowed && ruv > 0xffffffff )
3096 if (ckWARN(WARN_PORTABLE))
3097 Perl_warner(aTHX_ WARN_PORTABLE,
3098 "Hexadecimal number > 0xffffffff non-portable");
3100 *retlen = s - start;
3105 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3108 char *xfound = Nullch;
3109 char *xfailed = Nullch;
3110 char tmpbuf[MAXPATHLEN];
3114 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3115 # define SEARCH_EXTS ".bat", ".cmd", NULL
3116 # define MAX_EXT_LEN 4
3119 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3120 # define MAX_EXT_LEN 4
3123 # define SEARCH_EXTS ".pl", ".com", NULL
3124 # define MAX_EXT_LEN 4
3126 /* additional extensions to try in each dir if scriptname not found */
3128 char *exts[] = { SEARCH_EXTS };
3129 char **ext = search_ext ? search_ext : exts;
3130 int extidx = 0, i = 0;
3131 char *curext = Nullch;
3133 # define MAX_EXT_LEN 0
3137 * If dosearch is true and if scriptname does not contain path
3138 * delimiters, search the PATH for scriptname.
3140 * If SEARCH_EXTS is also defined, will look for each
3141 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3142 * while searching the PATH.
3144 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3145 * proceeds as follows:
3146 * If DOSISH or VMSISH:
3147 * + look for ./scriptname{,.foo,.bar}
3148 * + search the PATH for scriptname{,.foo,.bar}
3151 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3152 * this will not look in '.' if it's not in the PATH)
3157 # ifdef ALWAYS_DEFTYPES
3158 len = strlen(scriptname);
3159 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3160 int hasdir, idx = 0, deftypes = 1;
3163 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3166 int hasdir, idx = 0, deftypes = 1;
3169 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3171 /* The first time through, just add SEARCH_EXTS to whatever we
3172 * already have, so we can check for default file types. */
3174 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3180 if ((strlen(tmpbuf) + strlen(scriptname)
3181 + MAX_EXT_LEN) >= sizeof tmpbuf)
3182 continue; /* don't search dir with too-long name */
3183 strcat(tmpbuf, scriptname);
3187 if (strEQ(scriptname, "-"))
3189 if (dosearch) { /* Look in '.' first. */
3190 char *cur = scriptname;
3192 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3194 if (strEQ(ext[i++],curext)) {
3195 extidx = -1; /* already has an ext */
3200 DEBUG_p(PerlIO_printf(Perl_debug_log,
3201 "Looking for %s\n",cur));
3202 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3203 && !S_ISDIR(PL_statbuf.st_mode)) {
3211 if (cur == scriptname) {
3212 len = strlen(scriptname);
3213 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3215 cur = strcpy(tmpbuf, scriptname);
3217 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3218 && strcpy(tmpbuf+len, ext[extidx++]));
3223 #ifdef MACOS_TRADITIONAL
3224 if (dosearch && !strchr(scriptname, ':') &&
3225 (s = PerlEnv_getenv("Commands")))
3227 if (dosearch && !strchr(scriptname, '/')
3229 && !strchr(scriptname, '\\')
3231 && (s = PerlEnv_getenv("PATH")))
3236 PL_bufend = s + strlen(s);
3237 while (s < PL_bufend) {
3238 #ifdef MACOS_TRADITIONAL
3239 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3243 #if defined(atarist) || defined(DOSISH)
3248 && *s != ';'; len++, s++) {
3249 if (len < sizeof tmpbuf)
3252 if (len < sizeof tmpbuf)
3254 #else /* ! (atarist || DOSISH) */
3255 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3258 #endif /* ! (atarist || DOSISH) */
3259 #endif /* MACOS_TRADITIONAL */
3262 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3263 continue; /* don't search dir with too-long name */
3264 #ifdef MACOS_TRADITIONAL
3265 if (len && tmpbuf[len - 1] != ':')
3266 tmpbuf[len++] = ':';
3269 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3270 && tmpbuf[len - 1] != '/'
3271 && tmpbuf[len - 1] != '\\'
3274 tmpbuf[len++] = '/';
3275 if (len == 2 && tmpbuf[0] == '.')
3278 (void)strcpy(tmpbuf + len, scriptname);
3282 len = strlen(tmpbuf);
3283 if (extidx > 0) /* reset after previous loop */
3287 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3288 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3289 if (S_ISDIR(PL_statbuf.st_mode)) {
3293 } while ( retval < 0 /* not there */
3294 && extidx>=0 && ext[extidx] /* try an extension? */
3295 && strcpy(tmpbuf+len, ext[extidx++])
3300 if (S_ISREG(PL_statbuf.st_mode)
3301 && cando(S_IRUSR,TRUE,&PL_statbuf)
3302 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3303 && cando(S_IXUSR,TRUE,&PL_statbuf)
3307 xfound = tmpbuf; /* bingo! */
3311 xfailed = savepv(tmpbuf);
3314 if (!xfound && !seen_dot && !xfailed &&
3315 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3316 || S_ISDIR(PL_statbuf.st_mode)))
3318 seen_dot = 1; /* Disable message. */
3320 if (flags & 1) { /* do or die? */
3321 Perl_croak(aTHX_ "Can't %s %s%s%s",
3322 (xfailed ? "execute" : "find"),
3323 (xfailed ? xfailed : scriptname),
3324 (xfailed ? "" : " on PATH"),
3325 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3327 scriptname = Nullch;
3331 scriptname = xfound;
3333 return (scriptname ? savepv(scriptname) : Nullch);
3336 #ifndef PERL_GET_CONTEXT_DEFINED
3339 Perl_get_context(void)
3341 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3342 # ifdef OLD_PTHREADS_API
3344 if (pthread_getspecific(PL_thr_key, &t))
3345 Perl_croak_nocontext("panic: pthread_getspecific");
3348 # ifdef I_MACH_CTHREADS
3349 return (void*)cthread_data(cthread_self());
3351 return (void*)pthread_getspecific(PL_thr_key);
3360 Perl_set_context(void *t)
3362 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3363 # ifdef I_MACH_CTHREADS
3364 cthread_set_data(cthread_self(), t);
3366 if (pthread_setspecific(PL_thr_key, t))
3367 Perl_croak_nocontext("panic: pthread_setspecific");
3372 #endif /* !PERL_GET_CONTEXT_DEFINED */
3377 /* Very simplistic scheduler for now */
3381 thr = thr->i.next_run;
3385 Perl_cond_init(pTHX_ perl_cond *cp)
3391 Perl_cond_signal(pTHX_ perl_cond *cp)
3394 perl_cond cond = *cp;
3399 /* Insert t in the runnable queue just ahead of us */
3400 t->i.next_run = thr->i.next_run;
3401 thr->i.next_run->i.prev_run = t;
3402 t->i.prev_run = thr;
3403 thr->i.next_run = t;
3404 thr->i.wait_queue = 0;
3405 /* Remove from the wait queue */
3411 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3414 perl_cond cond, cond_next;
3416 for (cond = *cp; cond; cond = cond_next) {
3418 /* Insert t in the runnable queue just ahead of us */
3419 t->i.next_run = thr->i.next_run;
3420 thr->i.next_run->i.prev_run = t;
3421 t->i.prev_run = thr;
3422 thr->i.next_run = t;
3423 thr->i.wait_queue = 0;
3424 /* Remove from the wait queue */
3425 cond_next = cond->next;
3432 Perl_cond_wait(pTHX_ perl_cond *cp)
3436 if (thr->i.next_run == thr)
3437 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3439 New(666, cond, 1, struct perl_wait_queue);
3443 thr->i.wait_queue = cond;
3444 /* Remove ourselves from runnable queue */
3445 thr->i.next_run->i.prev_run = thr->i.prev_run;
3446 thr->i.prev_run->i.next_run = thr->i.next_run;
3448 #endif /* FAKE_THREADS */
3451 Perl_condpair_magic(pTHX_ SV *sv)
3455 SvUPGRADE(sv, SVt_PVMG);
3456 mg = mg_find(sv, 'm');
3460 New(53, cp, 1, condpair_t);
3461 MUTEX_INIT(&cp->mutex);
3462 COND_INIT(&cp->owner_cond);
3463 COND_INIT(&cp->cond);
3465 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3466 mg = mg_find(sv, 'm');
3468 /* someone else beat us to initialising it */
3469 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3470 MUTEX_DESTROY(&cp->mutex);
3471 COND_DESTROY(&cp->owner_cond);
3472 COND_DESTROY(&cp->cond);
3476 sv_magic(sv, Nullsv, 'm', 0, 0);
3478 mg->mg_ptr = (char *)cp;
3479 mg->mg_len = sizeof(cp);
3480 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3481 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3482 "%p: condpair_magic %p\n", thr, sv));)
3489 * Make a new perl thread structure using t as a prototype. Some of the
3490 * fields for the new thread are copied from the prototype thread, t,
3491 * so t should not be running in perl at the time this function is
3492 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3493 * thread calling new_struct_thread) clearly satisfies this constraint.
3495 struct perl_thread *
3496 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3498 #if !defined(PERL_IMPLICIT_CONTEXT)
3499 struct perl_thread *thr;
3505 sv = newSVpvn("", 0);
3506 SvGROW(sv, sizeof(struct perl_thread) + 1);
3507 SvCUR_set(sv, sizeof(struct perl_thread));
3508 thr = (Thread) SvPVX(sv);
3510 memset(thr, 0xab, sizeof(struct perl_thread));
3517 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3519 Zero(thr, 1, struct perl_thread);
3525 PL_curcop = &PL_compiling;
3526 thr->interp = t->interp;
3527 thr->cvcache = newHV();
3528 thr->threadsv = newAV();
3529 thr->specific = newAV();
3530 thr->errsv = newSVpvn("", 0);
3531 thr->flags = THRf_R_JOINABLE;
3532 MUTEX_INIT(&thr->mutex);
3536 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3539 PL_statname = NEWSV(66,0);
3540 PL_errors = newSVpvn("", 0);
3542 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3543 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3544 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3545 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3546 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3548 PL_reginterp_cnt = 0;
3549 PL_lastscream = Nullsv;
3552 PL_reg_start_tmp = 0;
3553 PL_reg_start_tmpl = 0;
3554 PL_reg_poscache = Nullch;
3556 /* parent thread's data needs to be locked while we make copy */
3557 MUTEX_LOCK(&t->mutex);
3559 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3560 PL_protect = t->Tprotect;
3563 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3564 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3565 PL_curstash = t->Tcurstash; /* always be set to main? */
3567 PL_tainted = t->Ttainted;
3568 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3569 PL_nrs = newSVsv(t->Tnrs);
3570 PL_rs = SvREFCNT_inc(PL_nrs);
3571 PL_last_in_gv = Nullgv;
3572 PL_ofslen = t->Tofslen;
3573 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3574 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3575 PL_chopset = t->Tchopset;
3576 PL_bodytarget = newSVsv(t->Tbodytarget);
3577 PL_toptarget = newSVsv(t->Ttoptarget);
3578 if (t->Tformtarget == t->Ttoptarget)
3579 PL_formtarget = PL_toptarget;
3581 PL_formtarget = PL_bodytarget;
3583 /* Initialise all per-thread SVs that the template thread used */
3584 svp = AvARRAY(t->threadsv);
3585 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3586 if (*svp && *svp != &PL_sv_undef) {
3587 SV *sv = newSVsv(*svp);
3588 av_store(thr->threadsv, i, sv);
3589 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3590 DEBUG_S(PerlIO_printf(Perl_debug_log,
3591 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3595 thr->threadsvp = AvARRAY(thr->threadsv);
3597 MUTEX_LOCK(&PL_threads_mutex);
3599 thr->tid = ++PL_threadnum;
3600 thr->next = t->next;
3603 thr->next->prev = thr;
3604 MUTEX_UNLOCK(&PL_threads_mutex);
3606 /* done copying parent's state */
3607 MUTEX_UNLOCK(&t->mutex);
3609 #ifdef HAVE_THREAD_INTERN
3610 Perl_init_thread_intern(thr);
3611 #endif /* HAVE_THREAD_INTERN */
3614 #endif /* USE_THREADS */
3616 #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
3618 * This hack is to force load of "huge" support from libm.a
3619 * So it is in perl for (say) POSIX to use.
3620 * Needed for SunOS with Sun's 'acc' for example.
3625 # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3632 #ifdef PERL_GLOBAL_STRUCT
3641 Perl_get_op_names(pTHX)
3647 Perl_get_op_descs(pTHX)
3653 Perl_get_no_modify(pTHX)
3655 return (char*)PL_no_modify;
3659 Perl_get_opargs(pTHX)
3665 Perl_get_ppaddr(pTHX)
3667 return (PPADDR_t*)PL_ppaddr;
3670 #ifndef HAS_GETENV_LEN
3672 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3674 char *env_trans = PerlEnv_getenv(env_elem);
3676 *len = strlen(env_trans);
3683 Perl_get_vtbl(pTHX_ int vtbl_id)
3685 MGVTBL* result = Null(MGVTBL*);
3689 result = &PL_vtbl_sv;
3692 result = &PL_vtbl_env;
3694 case want_vtbl_envelem:
3695 result = &PL_vtbl_envelem;
3698 result = &PL_vtbl_sig;
3700 case want_vtbl_sigelem:
3701 result = &PL_vtbl_sigelem;
3703 case want_vtbl_pack:
3704 result = &PL_vtbl_pack;
3706 case want_vtbl_packelem:
3707 result = &PL_vtbl_packelem;
3709 case want_vtbl_dbline:
3710 result = &PL_vtbl_dbline;
3713 result = &PL_vtbl_isa;
3715 case want_vtbl_isaelem:
3716 result = &PL_vtbl_isaelem;
3718 case want_vtbl_arylen:
3719 result = &PL_vtbl_arylen;
3721 case want_vtbl_glob:
3722 result = &PL_vtbl_glob;
3724 case want_vtbl_mglob:
3725 result = &PL_vtbl_mglob;
3727 case want_vtbl_nkeys:
3728 result = &PL_vtbl_nkeys;
3730 case want_vtbl_taint:
3731 result = &PL_vtbl_taint;
3733 case want_vtbl_substr:
3734 result = &PL_vtbl_substr;
3737 result = &PL_vtbl_vec;
3740 result = &PL_vtbl_pos;
3743 result = &PL_vtbl_bm;
3746 result = &PL_vtbl_fm;
3748 case want_vtbl_uvar:
3749 result = &PL_vtbl_uvar;
3752 case want_vtbl_mutex:
3753 result = &PL_vtbl_mutex;
3756 case want_vtbl_defelem:
3757 result = &PL_vtbl_defelem;
3759 case want_vtbl_regexp:
3760 result = &PL_vtbl_regexp;
3762 case want_vtbl_regdata:
3763 result = &PL_vtbl_regdata;
3765 case want_vtbl_regdatum:
3766 result = &PL_vtbl_regdatum;
3768 #ifdef USE_LOCALE_COLLATE
3769 case want_vtbl_collxfrm:
3770 result = &PL_vtbl_collxfrm;
3773 case want_vtbl_amagic:
3774 result = &PL_vtbl_amagic;
3776 case want_vtbl_amagicelem:
3777 result = &PL_vtbl_amagicelem;
3779 case want_vtbl_backref:
3780 result = &PL_vtbl_backref;
3787 Perl_my_fflush_all(pTHX)
3790 return PerlIO_flush(NULL);
3793 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3794 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3795 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3797 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3798 open_max = sysconf(_SC_OPEN_MAX);
3801 open_max = FOPEN_MAX;
3804 open_max = OPEN_MAX;
3815 for (i = 0; i < open_max; i++)
3816 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3817 STDIO_STREAM_ARRAY[i]._file < open_max &&
3818 STDIO_STREAM_ARRAY[i]._flag)
3819 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3823 SETERRNO(EBADF,RMS$_IFI);
3829 Perl_my_atof(pTHX_ const char* s)
3831 #ifdef USE_LOCALE_NUMERIC
3832 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3836 SET_NUMERIC_STANDARD();
3838 SET_NUMERIC_LOCAL();
3839 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3844 return Perl_atof(s);
3846 return Perl_atof(s);
3851 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3858 sv = sv_newmortal();
3859 gv_efullname3(sv, gv, Nullch);
3862 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3864 if (io && IoDIRP(io))
3865 Perl_warner(aTHX_ WARN_CLOSED,
3866 "\t(Are you trying to call %s() on dirhandle %s?)\n",