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)
1583 msv = vmess(pat, args);
1584 if (PL_errors && SvCUR(PL_errors)) {
1585 sv_catsv(PL_errors, msv);
1586 message = SvPV(PL_errors, msglen);
1587 SvCUR_set(PL_errors, 0);
1590 message = SvPV(msv,msglen);
1592 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1593 PTR2UV(thr), message));
1596 /* sv_2cv might call Perl_croak() */
1597 SV *olddiehook = PL_diehook;
1599 SAVESPTR(PL_diehook);
1600 PL_diehook = Nullsv;
1601 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1603 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1609 msg = newSVpvn(message, msglen);
1613 PUSHSTACKi(PERLSI_DIEHOOK);
1617 call_sv((SV*)cv, G_DISCARD);
1623 PL_restartop = die_where(message, msglen);
1628 /* SFIO can really mess with your errno */
1631 PerlIO *serr = Perl_error_log;
1633 PerlIO_write(serr, message, msglen);
1634 (void)PerlIO_flush(serr);
1642 #if defined(PERL_IMPLICIT_CONTEXT)
1644 Perl_croak_nocontext(const char *pat, ...)
1648 va_start(args, pat);
1653 #endif /* PERL_IMPLICIT_CONTEXT */
1658 This is the XSUB-writer's interface to Perl's C<die> function. Use this
1659 function the same way you use the C C<printf> function. See
1666 Perl_croak(pTHX_ const char *pat, ...)
1669 va_start(args, pat);
1676 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1685 msv = vmess(pat, args);
1686 message = SvPV(msv, msglen);
1689 /* sv_2cv might call Perl_warn() */
1691 SV *oldwarnhook = PL_warnhook;
1693 SAVESPTR(PL_warnhook);
1694 PL_warnhook = Nullsv;
1695 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1697 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1703 msg = newSVpvn(message, msglen);
1707 PUSHSTACKi(PERLSI_WARNHOOK);
1711 call_sv((SV*)cv, G_DISCARD);
1718 PerlIO *serr = Perl_error_log;
1720 PerlIO_write(serr, message, msglen);
1722 DEBUG_L(*message == '!'
1723 ? (xstat(message[1]=='!'
1724 ? (message[2]=='!' ? 2 : 1)
1729 (void)PerlIO_flush(serr);
1733 #if defined(PERL_IMPLICIT_CONTEXT)
1735 Perl_warn_nocontext(const char *pat, ...)
1739 va_start(args, pat);
1743 #endif /* PERL_IMPLICIT_CONTEXT */
1748 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1749 function the same way you use the C C<printf> function. See
1756 Perl_warn(pTHX_ const char *pat, ...)
1759 va_start(args, pat);
1764 #if defined(PERL_IMPLICIT_CONTEXT)
1766 Perl_warner_nocontext(U32 err, const char *pat, ...)
1770 va_start(args, pat);
1771 vwarner(err, pat, &args);
1774 #endif /* PERL_IMPLICIT_CONTEXT */
1777 Perl_warner(pTHX_ U32 err, const char* pat,...)
1780 va_start(args, pat);
1781 vwarner(err, pat, &args);
1786 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1796 msv = vmess(pat, args);
1797 message = SvPV(msv, msglen);
1801 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1802 #endif /* USE_THREADS */
1804 /* sv_2cv might call Perl_croak() */
1805 SV *olddiehook = PL_diehook;
1807 SAVESPTR(PL_diehook);
1808 PL_diehook = Nullsv;
1809 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1811 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1817 msg = newSVpvn(message, msglen);
1821 PUSHSTACKi(PERLSI_DIEHOOK);
1825 call_sv((SV*)cv, G_DISCARD);
1831 PL_restartop = die_where(message, msglen);
1835 PerlIO *serr = Perl_error_log;
1836 PerlIO_write(serr, message, msglen);
1837 (void)PerlIO_flush(serr);
1844 /* sv_2cv might call Perl_warn() */
1846 SV *oldwarnhook = PL_warnhook;
1848 SAVESPTR(PL_warnhook);
1849 PL_warnhook = Nullsv;
1850 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1852 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1858 msg = newSVpvn(message, msglen);
1862 PUSHSTACKi(PERLSI_WARNHOOK);
1866 call_sv((SV*)cv, G_DISCARD);
1873 PerlIO *serr = Perl_error_log;
1874 PerlIO_write(serr, message, msglen);
1878 (void)PerlIO_flush(serr);
1883 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1884 #if !defined(WIN32) && !defined(__CYGWIN__)
1886 Perl_my_setenv(pTHX_ char *nam, char *val)
1888 #ifndef PERL_USE_SAFE_PUTENV
1889 /* most putenv()s leak, so we manipulate environ directly */
1890 register I32 i=setenv_getix(nam); /* where does it go? */
1892 if (environ == PL_origenviron) { /* need we copy environment? */
1898 for (max = i; environ[max]; max++) ;
1899 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1900 for (j=0; j<max; j++) { /* copy environment */
1901 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1902 strcpy(tmpenv[j], environ[j]);
1904 tmpenv[max] = Nullch;
1905 environ = tmpenv; /* tell exec where it is now */
1908 safesysfree(environ[i]);
1909 while (environ[i]) {
1910 environ[i] = environ[i+1];
1915 if (!environ[i]) { /* does not exist yet */
1916 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1917 environ[i+1] = Nullch; /* make sure it's null terminated */
1920 safesysfree(environ[i]);
1921 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1923 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1925 #else /* PERL_USE_SAFE_PUTENV */
1928 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1929 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1930 (void)putenv(new_env);
1931 #endif /* PERL_USE_SAFE_PUTENV */
1934 #else /* WIN32 || __CYGWIN__ */
1935 #if defined(__CYGWIN__)
1937 * Save environ of perl.exe, currently Cygwin links in separate environ's
1938 * for each exe/dll. Probably should be a member of impure_ptr.
1940 static char ***Perl_main_environ;
1943 Perl_my_setenv_init(char ***penviron)
1945 Perl_main_environ = penviron;
1949 Perl_my_setenv(pTHX_ char *nam, char *val)
1951 /* You can not directly manipulate the environ[] array because
1952 * the routines do some additional work that syncs the Cygwin
1953 * environment with the Windows environment.
1955 char *oldstr = environ[setenv_getix(nam)];
1961 safesysfree(oldstr);
1964 setenv(nam, val, 1);
1965 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1966 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1967 safesysfree(oldstr);
1969 #else /* if WIN32 */
1972 Perl_my_setenv(pTHX_ char *nam,char *val)
1975 #ifdef USE_WIN32_RTL_ENV
1977 register char *envstr;
1978 STRLEN namlen = strlen(nam);
1980 char *oldstr = environ[setenv_getix(nam)];
1982 /* putenv() has totally broken semantics in both the Borland
1983 * and Microsoft CRTLs. They either store the passed pointer in
1984 * the environment without making a copy, or make a copy and don't
1985 * free it. And on top of that, they dont free() old entries that
1986 * are being replaced/deleted. This means the caller must
1987 * free any old entries somehow, or we end up with a memory
1988 * leak every time my_setenv() is called. One might think
1989 * one could directly manipulate environ[], like the UNIX code
1990 * above, but direct changes to environ are not allowed when
1991 * calling putenv(), since the RTLs maintain an internal
1992 * *copy* of environ[]. Bad, bad, *bad* stink.
2003 vallen = strlen(val);
2004 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2005 (void)sprintf(envstr,"%s=%s",nam,val);
2006 (void)PerlEnv_putenv(envstr);
2008 safesysfree(oldstr);
2010 safesysfree(envstr); /* MSVCRT leaks without this */
2013 #else /* !USE_WIN32_RTL_ENV */
2015 register char *envstr;
2016 STRLEN len = strlen(nam) + 3;
2021 New(904, envstr, len, char);
2022 (void)sprintf(envstr,"%s=%s",nam,val);
2023 (void)PerlEnv_putenv(envstr);
2033 Perl_setenv_getix(pTHX_ char *nam)
2035 register I32 i, len = strlen(nam);
2037 for (i = 0; environ[i]; i++) {
2040 strnicmp(environ[i],nam,len) == 0
2042 strnEQ(environ[i],nam,len)
2044 && environ[i][len] == '=')
2045 break; /* strnEQ must come first to avoid */
2046 } /* potential SEGV's */
2052 #ifdef UNLINK_ALL_VERSIONS
2054 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2058 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2063 /* this is a drop-in replacement for bcopy() */
2064 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2066 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2070 if (from - to >= 0) {
2078 *(--to) = *(--from);
2084 /* this is a drop-in replacement for memset() */
2087 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2097 /* this is a drop-in replacement for bzero() */
2098 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2100 Perl_my_bzero(register char *loc, register I32 len)
2110 /* this is a drop-in replacement for memcmp() */
2111 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2113 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2115 register U8 *a = (U8 *)s1;
2116 register U8 *b = (U8 *)s2;
2120 if (tmp = *a++ - *b++)
2125 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2129 #ifdef USE_CHAR_VSPRINTF
2134 vsprintf(char *dest, const char *pat, char *args)
2138 fakebuf._ptr = dest;
2139 fakebuf._cnt = 32767;
2143 fakebuf._flag = _IOWRT|_IOSTRG;
2144 _doprnt(pat, args, &fakebuf); /* what a kludge */
2145 (void)putc('\0', &fakebuf);
2146 #ifdef USE_CHAR_VSPRINTF
2149 return 0; /* perl doesn't use return value */
2153 #endif /* HAS_VPRINTF */
2156 #if BYTEORDER != 0x4321
2158 Perl_my_swap(pTHX_ short s)
2160 #if (BYTEORDER & 1) == 0
2163 result = ((s & 255) << 8) + ((s >> 8) & 255);
2171 Perl_my_htonl(pTHX_ long l)
2175 char c[sizeof(long)];
2178 #if BYTEORDER == 0x1234
2179 u.c[0] = (l >> 24) & 255;
2180 u.c[1] = (l >> 16) & 255;
2181 u.c[2] = (l >> 8) & 255;
2185 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2186 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2191 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2192 u.c[o & 0xf] = (l >> s) & 255;
2200 Perl_my_ntohl(pTHX_ long l)
2204 char c[sizeof(long)];
2207 #if BYTEORDER == 0x1234
2208 u.c[0] = (l >> 24) & 255;
2209 u.c[1] = (l >> 16) & 255;
2210 u.c[2] = (l >> 8) & 255;
2214 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2215 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2222 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2223 l |= (u.c[o & 0xf] & 255) << s;
2230 #endif /* BYTEORDER != 0x4321 */
2234 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2235 * If these functions are defined,
2236 * the BYTEORDER is neither 0x1234 nor 0x4321.
2237 * However, this is not assumed.
2241 #define HTOV(name,type) \
2243 name (register type n) \
2247 char c[sizeof(type)]; \
2251 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2252 u.c[i] = (n >> s) & 0xFF; \
2257 #define VTOH(name,type) \
2259 name (register type n) \
2263 char c[sizeof(type)]; \
2269 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2270 n += (u.c[i] & 0xFF) << s; \
2275 #if defined(HAS_HTOVS) && !defined(htovs)
2278 #if defined(HAS_HTOVL) && !defined(htovl)
2281 #if defined(HAS_VTOHS) && !defined(vtohs)
2284 #if defined(HAS_VTOHL) && !defined(vtohl)
2288 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2289 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2291 Perl_my_popen(pTHX_ char *cmd, char *mode)
2294 register I32 This, that;
2297 I32 doexec = strNE(cmd,"-");
2301 PERL_FLUSHALL_FOR_CHILD;
2304 return my_syspopen(cmd,mode);
2307 This = (*mode == 'w');
2309 if (doexec && PL_tainting) {
2311 taint_proper("Insecure %s%s", "EXEC");
2313 if (PerlProc_pipe(p) < 0)
2315 if (doexec && PerlProc_pipe(pp) >= 0)
2317 while ((pid = (doexec?vfork():fork())) < 0) {
2318 if (errno != EAGAIN) {
2319 PerlLIO_close(p[This]);
2321 PerlLIO_close(pp[0]);
2322 PerlLIO_close(pp[1]);
2325 Perl_croak(aTHX_ "Can't fork");
2337 PerlLIO_close(p[THAT]);
2339 PerlLIO_close(pp[0]);
2340 #if defined(HAS_FCNTL) && defined(F_SETFD)
2341 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2344 if (p[THIS] != (*mode == 'r')) {
2345 PerlLIO_dup2(p[THIS], *mode == 'r');
2346 PerlLIO_close(p[THIS]);
2350 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2356 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2360 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2363 #endif /* defined OS2 */
2365 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2366 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2368 hv_clear(PL_pidstatus); /* we have no children */
2373 do_execfree(); /* free any memory malloced by child on vfork */
2374 PerlLIO_close(p[that]);
2376 PerlLIO_close(pp[1]);
2377 if (p[that] < p[This]) {
2378 PerlLIO_dup2(p[This], p[that]);
2379 PerlLIO_close(p[This]);
2382 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2383 (void)SvUPGRADE(sv,SVt_IV);
2385 PL_forkprocess = pid;
2386 if (did_pipes && pid > 0) {
2390 while (n < sizeof(int)) {
2391 n1 = PerlLIO_read(pp[0],
2392 (void*)(((char*)&errkid)+n),
2398 PerlLIO_close(pp[0]);
2400 if (n) { /* Error */
2401 if (n != sizeof(int))
2402 Perl_croak(aTHX_ "panic: kid popen errno read");
2403 errno = errkid; /* Propagate errno from kid */
2408 PerlLIO_close(pp[0]);
2409 return PerlIO_fdopen(p[This], mode);
2412 #if defined(atarist) || defined(DJGPP)
2415 Perl_my_popen(pTHX_ char *cmd, char *mode)
2417 /* Needs work for PerlIO ! */
2418 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2419 PERL_FLUSHALL_FOR_CHILD;
2420 return popen(PerlIO_exportFILE(cmd, 0), mode);
2424 #endif /* !DOSISH */
2428 Perl_dump_fds(pTHX_ char *s)
2431 struct stat tmpstatbuf;
2433 PerlIO_printf(Perl_debug_log,"%s", s);
2434 for (fd = 0; fd < 32; fd++) {
2435 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2436 PerlIO_printf(Perl_debug_log," %d",fd);
2438 PerlIO_printf(Perl_debug_log,"\n");
2440 #endif /* DUMP_FDS */
2444 dup2(int oldfd, int newfd)
2446 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2449 PerlLIO_close(newfd);
2450 return fcntl(oldfd, F_DUPFD, newfd);
2452 #define DUP2_MAX_FDS 256
2453 int fdtmp[DUP2_MAX_FDS];
2459 PerlLIO_close(newfd);
2460 /* good enough for low fd's... */
2461 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2462 if (fdx >= DUP2_MAX_FDS) {
2470 PerlLIO_close(fdtmp[--fdx]);
2477 #ifdef HAS_SIGACTION
2480 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2482 struct sigaction act, oact;
2484 act.sa_handler = handler;
2485 sigemptyset(&act.sa_mask);
2488 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2491 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2492 act.sa_flags |= SA_NOCLDWAIT;
2494 if (sigaction(signo, &act, &oact) == -1)
2497 return oact.sa_handler;
2501 Perl_rsignal_state(pTHX_ int signo)
2503 struct sigaction oact;
2505 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2508 return oact.sa_handler;
2512 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2514 struct sigaction act;
2516 act.sa_handler = handler;
2517 sigemptyset(&act.sa_mask);
2520 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2523 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2524 act.sa_flags |= SA_NOCLDWAIT;
2526 return sigaction(signo, &act, save);
2530 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2532 return sigaction(signo, save, (struct sigaction *)NULL);
2535 #else /* !HAS_SIGACTION */
2538 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2540 return PerlProc_signal(signo, handler);
2543 static int sig_trapped;
2553 Perl_rsignal_state(pTHX_ int signo)
2555 Sighandler_t oldsig;
2558 oldsig = PerlProc_signal(signo, sig_trap);
2559 PerlProc_signal(signo, oldsig);
2561 PerlProc_kill(PerlProc_getpid(), signo);
2566 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2568 *save = PerlProc_signal(signo, handler);
2569 return (*save == SIG_ERR) ? -1 : 0;
2573 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2575 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2578 #endif /* !HAS_SIGACTION */
2580 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2581 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2583 Perl_my_pclose(pTHX_ PerlIO *ptr)
2585 Sigsave_t hstat, istat, qstat;
2593 int saved_vaxc_errno;
2596 int saved_win32_errno;
2599 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2602 *svp = &PL_sv_undef;
2604 if (pid == -1) { /* Opened by popen. */
2605 return my_syspclose(ptr);
2608 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2609 saved_errno = errno;
2611 saved_vaxc_errno = vaxc$errno;
2614 saved_win32_errno = GetLastError();
2618 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2620 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2621 rsignal_save(SIGINT, SIG_IGN, &istat);
2622 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2624 pid2 = wait4pid(pid, &status, 0);
2625 } while (pid2 == -1 && errno == EINTR);
2626 rsignal_restore(SIGHUP, &hstat);
2627 rsignal_restore(SIGINT, &istat);
2628 rsignal_restore(SIGQUIT, &qstat);
2630 SETERRNO(saved_errno, saved_vaxc_errno);
2633 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2635 #endif /* !DOSISH */
2637 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2639 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2643 char spid[TYPE_CHARS(int)];
2648 sprintf(spid, "%"IVdf, (IV)pid);
2649 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2650 if (svp && *svp != &PL_sv_undef) {
2651 *statusp = SvIVX(*svp);
2652 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2659 hv_iterinit(PL_pidstatus);
2660 if ((entry = hv_iternext(PL_pidstatus))) {
2661 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2662 sv = hv_iterval(PL_pidstatus,entry);
2663 *statusp = SvIVX(sv);
2664 sprintf(spid, "%"IVdf, (IV)pid);
2665 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2670 # ifdef HAS_WAITPID_RUNTIME
2671 if (!HAS_WAITPID_RUNTIME)
2674 return PerlProc_waitpid(pid,statusp,flags);
2676 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2677 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2679 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2684 Perl_croak(aTHX_ "Can't do waitpid with flags");
2686 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2687 pidgone(result,*statusp);
2695 #endif /* !DOSISH || OS2 || WIN32 */
2699 Perl_pidgone(pTHX_ Pid_t pid, int status)
2702 char spid[TYPE_CHARS(int)];
2704 sprintf(spid, "%"IVdf, (IV)pid);
2705 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2706 (void)SvUPGRADE(sv,SVt_IV);
2711 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2714 int /* Cannot prototype with I32
2716 my_syspclose(PerlIO *ptr)
2719 Perl_my_pclose(pTHX_ PerlIO *ptr)
2722 /* Needs work for PerlIO ! */
2723 FILE *f = PerlIO_findFILE(ptr);
2724 I32 result = pclose(f);
2726 result = (result << 8) & 0xff00;
2728 PerlIO_releaseFILE(ptr,f);
2734 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2737 register const char *frombase = from;
2740 register const char c = *from;
2745 while (count-- > 0) {
2746 for (todo = len; todo > 0; todo--) {
2754 Perl_cast_ulong(pTHX_ NV f)
2759 # define BIGDOUBLE 2147483648.0
2761 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2764 return (unsigned long)f;
2766 return (unsigned long)along;
2770 /* Unfortunately, on some systems the cast_uv() function doesn't
2771 work with the system-supplied definition of ULONG_MAX. The
2772 comparison (f >= ULONG_MAX) always comes out true. It must be a
2773 problem with the compiler constant folding.
2775 In any case, this workaround should be fine on any two's complement
2776 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2778 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2781 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2783 -- Kenneth Albanowski <kjahds@kjahds.com>
2787 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2791 Perl_cast_i32(pTHX_ NV f)
2794 return (I32) I32_MAX;
2796 return (I32) I32_MIN;
2801 Perl_cast_iv(pTHX_ NV f)
2806 if (f >= (NV)UV_MAX)
2817 Perl_cast_uv(pTHX_ NV f)
2820 return (UV) MY_UV_MAX;
2834 Perl_same_dirent(pTHX_ char *a, char *b)
2836 char *fa = strrchr(a,'/');
2837 char *fb = strrchr(b,'/');
2838 struct stat tmpstatbuf1;
2839 struct stat tmpstatbuf2;
2840 SV *tmpsv = sv_newmortal();
2853 sv_setpv(tmpsv, ".");
2855 sv_setpvn(tmpsv, a, fa - a);
2856 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2859 sv_setpv(tmpsv, ".");
2861 sv_setpvn(tmpsv, b, fb - b);
2862 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2864 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2865 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2867 #endif /* !HAS_RENAME */
2870 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2872 register char *s = start;
2873 register NV rnv = 0.0;
2874 register UV ruv = 0;
2875 register bool seenb = FALSE;
2876 register bool overflowed = FALSE;
2878 for (; len-- && *s; s++) {
2879 if (!(*s == '0' || *s == '1')) {
2880 if (*s == '_' && len && *retlen
2881 && (s[1] == '0' || s[1] == '1'))
2886 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2887 /* Disallow 0bbb0b0bbb... */
2893 if (ckWARN(WARN_DIGIT))
2894 Perl_warner(aTHX_ WARN_DIGIT,
2895 "Illegal binary digit '%c' ignored", *s);
2900 register UV xuv = ruv << 1;
2902 if ((xuv >> 1) != ruv) {
2906 if (ckWARN_d(WARN_OVERFLOW))
2907 Perl_warner(aTHX_ WARN_OVERFLOW,
2908 "Integer overflow in binary number");
2911 ruv = xuv | (*s - '0');
2915 /* If an NV has not enough bits in its mantissa to
2916 * represent an UV this summing of small low-order numbers
2917 * is a waste of time (because the NV cannot preserve
2918 * the low-order bits anyway): we could just remember when
2919 * did we overflow and in the end just multiply rnv by the
2926 if ( ( overflowed && rnv > 4294967295.0)
2928 || (!overflowed && ruv > 0xffffffff )
2932 if (ckWARN(WARN_PORTABLE))
2933 Perl_warner(aTHX_ WARN_PORTABLE,
2934 "Binary number > 0b11111111111111111111111111111111 non-portable");
2936 *retlen = s - start;
2941 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2943 register char *s = start;
2944 register NV rnv = 0.0;
2945 register UV ruv = 0;
2946 register bool overflowed = FALSE;
2948 for (; len-- && *s; s++) {
2949 if (!(*s >= '0' && *s <= '7')) {
2950 if (*s == '_' && len && *retlen
2951 && (s[1] >= '0' && s[1] <= '7'))
2957 /* Allow \octal to work the DWIM way (that is, stop scanning
2958 * as soon as non-octal characters are seen, complain only iff
2959 * someone seems to want to use the digits eight and nine). */
2960 if (*s == '8' || *s == '9') {
2962 if (ckWARN(WARN_DIGIT))
2963 Perl_warner(aTHX_ WARN_DIGIT,
2964 "Illegal octal digit '%c' ignored", *s);
2970 register UV xuv = ruv << 3;
2972 if ((xuv >> 3) != ruv) {
2976 if (ckWARN_d(WARN_OVERFLOW))
2977 Perl_warner(aTHX_ WARN_OVERFLOW,
2978 "Integer overflow in octal number");
2981 ruv = xuv | (*s - '0');
2985 /* If an NV has not enough bits in its mantissa to
2986 * represent an UV this summing of small low-order numbers
2987 * is a waste of time (because the NV cannot preserve
2988 * the low-order bits anyway): we could just remember when
2989 * did we overflow and in the end just multiply rnv by the
2990 * right amount of 8-tuples. */
2991 rnv += (NV)(*s - '0');
2996 if ( ( overflowed && rnv > 4294967295.0)
2998 || (!overflowed && ruv > 0xffffffff )
3002 if (ckWARN(WARN_PORTABLE))
3003 Perl_warner(aTHX_ WARN_PORTABLE,
3004 "Octal number > 037777777777 non-portable");
3006 *retlen = s - start;
3011 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3013 register char *s = start;
3014 register NV rnv = 0.0;
3015 register UV ruv = 0;
3016 register bool seenx = FALSE;
3017 register bool overflowed = FALSE;
3020 for (; len-- && *s; s++) {
3021 hexdigit = strchr((char *) PL_hexdigit, *s);
3023 if (*s == '_' && len && *retlen && s[1]
3024 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3029 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3030 /* Disallow 0xxx0x0xxx... */
3036 if (ckWARN(WARN_DIGIT))
3037 Perl_warner(aTHX_ WARN_DIGIT,
3038 "Illegal hexadecimal digit '%c' ignored", *s);
3043 register UV xuv = ruv << 4;
3045 if ((xuv >> 4) != ruv) {
3049 if (ckWARN_d(WARN_OVERFLOW))
3050 Perl_warner(aTHX_ WARN_OVERFLOW,
3051 "Integer overflow in hexadecimal number");
3054 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3058 /* If an NV has not enough bits in its mantissa to
3059 * represent an UV this summing of small low-order numbers
3060 * is a waste of time (because the NV cannot preserve
3061 * the low-order bits anyway): we could just remember when
3062 * did we overflow and in the end just multiply rnv by the
3063 * right amount of 16-tuples. */
3064 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3069 if ( ( overflowed && rnv > 4294967295.0)
3071 || (!overflowed && ruv > 0xffffffff )
3075 if (ckWARN(WARN_PORTABLE))
3076 Perl_warner(aTHX_ WARN_PORTABLE,
3077 "Hexadecimal number > 0xffffffff non-portable");
3079 *retlen = s - start;
3084 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3087 char *xfound = Nullch;
3088 char *xfailed = Nullch;
3089 char tmpbuf[MAXPATHLEN];
3093 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3094 # define SEARCH_EXTS ".bat", ".cmd", NULL
3095 # define MAX_EXT_LEN 4
3098 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3099 # define MAX_EXT_LEN 4
3102 # define SEARCH_EXTS ".pl", ".com", NULL
3103 # define MAX_EXT_LEN 4
3105 /* additional extensions to try in each dir if scriptname not found */
3107 char *exts[] = { SEARCH_EXTS };
3108 char **ext = search_ext ? search_ext : exts;
3109 int extidx = 0, i = 0;
3110 char *curext = Nullch;
3112 # define MAX_EXT_LEN 0
3116 * If dosearch is true and if scriptname does not contain path
3117 * delimiters, search the PATH for scriptname.
3119 * If SEARCH_EXTS is also defined, will look for each
3120 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3121 * while searching the PATH.
3123 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3124 * proceeds as follows:
3125 * If DOSISH or VMSISH:
3126 * + look for ./scriptname{,.foo,.bar}
3127 * + search the PATH for scriptname{,.foo,.bar}
3130 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3131 * this will not look in '.' if it's not in the PATH)
3136 # ifdef ALWAYS_DEFTYPES
3137 len = strlen(scriptname);
3138 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3139 int hasdir, idx = 0, deftypes = 1;
3142 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3145 int hasdir, idx = 0, deftypes = 1;
3148 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3150 /* The first time through, just add SEARCH_EXTS to whatever we
3151 * already have, so we can check for default file types. */
3153 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3159 if ((strlen(tmpbuf) + strlen(scriptname)
3160 + MAX_EXT_LEN) >= sizeof tmpbuf)
3161 continue; /* don't search dir with too-long name */
3162 strcat(tmpbuf, scriptname);
3166 if (strEQ(scriptname, "-"))
3168 if (dosearch) { /* Look in '.' first. */
3169 char *cur = scriptname;
3171 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3173 if (strEQ(ext[i++],curext)) {
3174 extidx = -1; /* already has an ext */
3179 DEBUG_p(PerlIO_printf(Perl_debug_log,
3180 "Looking for %s\n",cur));
3181 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3182 && !S_ISDIR(PL_statbuf.st_mode)) {
3190 if (cur == scriptname) {
3191 len = strlen(scriptname);
3192 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3194 cur = strcpy(tmpbuf, scriptname);
3196 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3197 && strcpy(tmpbuf+len, ext[extidx++]));
3202 #ifdef MACOS_TRADITIONAL
3203 if (dosearch && !strchr(scriptname, ':') &&
3204 (s = PerlEnv_getenv("Commands")))
3206 if (dosearch && !strchr(scriptname, '/')
3208 && !strchr(scriptname, '\\')
3210 && (s = PerlEnv_getenv("PATH")))
3215 PL_bufend = s + strlen(s);
3216 while (s < PL_bufend) {
3217 #ifdef MACOS_TRADITIONAL
3218 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3222 #if defined(atarist) || defined(DOSISH)
3227 && *s != ';'; len++, s++) {
3228 if (len < sizeof tmpbuf)
3231 if (len < sizeof tmpbuf)
3233 #else /* ! (atarist || DOSISH) */
3234 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3237 #endif /* ! (atarist || DOSISH) */
3238 #endif /* MACOS_TRADITIONAL */
3241 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3242 continue; /* don't search dir with too-long name */
3243 #ifdef MACOS_TRADITIONAL
3244 if (len && tmpbuf[len - 1] != ':')
3245 tmpbuf[len++] = ':';
3248 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3249 && tmpbuf[len - 1] != '/'
3250 && tmpbuf[len - 1] != '\\'
3253 tmpbuf[len++] = '/';
3254 if (len == 2 && tmpbuf[0] == '.')
3257 (void)strcpy(tmpbuf + len, scriptname);
3261 len = strlen(tmpbuf);
3262 if (extidx > 0) /* reset after previous loop */
3266 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3267 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3268 if (S_ISDIR(PL_statbuf.st_mode)) {
3272 } while ( retval < 0 /* not there */
3273 && extidx>=0 && ext[extidx] /* try an extension? */
3274 && strcpy(tmpbuf+len, ext[extidx++])
3279 if (S_ISREG(PL_statbuf.st_mode)
3280 && cando(S_IRUSR,TRUE,&PL_statbuf)
3281 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3282 && cando(S_IXUSR,TRUE,&PL_statbuf)
3286 xfound = tmpbuf; /* bingo! */
3290 xfailed = savepv(tmpbuf);
3293 if (!xfound && !seen_dot && !xfailed &&
3294 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3295 || S_ISDIR(PL_statbuf.st_mode)))
3297 seen_dot = 1; /* Disable message. */
3299 if (flags & 1) { /* do or die? */
3300 Perl_croak(aTHX_ "Can't %s %s%s%s",
3301 (xfailed ? "execute" : "find"),
3302 (xfailed ? xfailed : scriptname),
3303 (xfailed ? "" : " on PATH"),
3304 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3306 scriptname = Nullch;
3310 scriptname = xfound;
3312 return (scriptname ? savepv(scriptname) : Nullch);
3315 #ifndef PERL_GET_CONTEXT_DEFINED
3318 Perl_get_context(void)
3320 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3321 # ifdef OLD_PTHREADS_API
3323 if (pthread_getspecific(PL_thr_key, &t))
3324 Perl_croak_nocontext("panic: pthread_getspecific");
3327 # ifdef I_MACH_CTHREADS
3328 return (void*)cthread_data(cthread_self());
3330 return (void*)pthread_getspecific(PL_thr_key);
3339 Perl_set_context(void *t)
3341 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3342 # ifdef I_MACH_CTHREADS
3343 cthread_set_data(cthread_self(), t);
3345 if (pthread_setspecific(PL_thr_key, t))
3346 Perl_croak_nocontext("panic: pthread_setspecific");
3351 #endif /* !PERL_GET_CONTEXT_DEFINED */
3356 /* Very simplistic scheduler for now */
3360 thr = thr->i.next_run;
3364 Perl_cond_init(pTHX_ perl_cond *cp)
3370 Perl_cond_signal(pTHX_ perl_cond *cp)
3373 perl_cond cond = *cp;
3378 /* Insert t in the runnable queue just ahead of us */
3379 t->i.next_run = thr->i.next_run;
3380 thr->i.next_run->i.prev_run = t;
3381 t->i.prev_run = thr;
3382 thr->i.next_run = t;
3383 thr->i.wait_queue = 0;
3384 /* Remove from the wait queue */
3390 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3393 perl_cond cond, cond_next;
3395 for (cond = *cp; cond; cond = cond_next) {
3397 /* Insert t in the runnable queue just ahead of us */
3398 t->i.next_run = thr->i.next_run;
3399 thr->i.next_run->i.prev_run = t;
3400 t->i.prev_run = thr;
3401 thr->i.next_run = t;
3402 thr->i.wait_queue = 0;
3403 /* Remove from the wait queue */
3404 cond_next = cond->next;
3411 Perl_cond_wait(pTHX_ perl_cond *cp)
3415 if (thr->i.next_run == thr)
3416 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3418 New(666, cond, 1, struct perl_wait_queue);
3422 thr->i.wait_queue = cond;
3423 /* Remove ourselves from runnable queue */
3424 thr->i.next_run->i.prev_run = thr->i.prev_run;
3425 thr->i.prev_run->i.next_run = thr->i.next_run;
3427 #endif /* FAKE_THREADS */
3430 Perl_condpair_magic(pTHX_ SV *sv)
3434 SvUPGRADE(sv, SVt_PVMG);
3435 mg = mg_find(sv, 'm');
3439 New(53, cp, 1, condpair_t);
3440 MUTEX_INIT(&cp->mutex);
3441 COND_INIT(&cp->owner_cond);
3442 COND_INIT(&cp->cond);
3444 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3445 mg = mg_find(sv, 'm');
3447 /* someone else beat us to initialising it */
3448 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3449 MUTEX_DESTROY(&cp->mutex);
3450 COND_DESTROY(&cp->owner_cond);
3451 COND_DESTROY(&cp->cond);
3455 sv_magic(sv, Nullsv, 'm', 0, 0);
3457 mg->mg_ptr = (char *)cp;
3458 mg->mg_len = sizeof(cp);
3459 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3460 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3461 "%p: condpair_magic %p\n", thr, sv));)
3468 * Make a new perl thread structure using t as a prototype. Some of the
3469 * fields for the new thread are copied from the prototype thread, t,
3470 * so t should not be running in perl at the time this function is
3471 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3472 * thread calling new_struct_thread) clearly satisfies this constraint.
3474 struct perl_thread *
3475 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3477 #if !defined(PERL_IMPLICIT_CONTEXT)
3478 struct perl_thread *thr;
3484 sv = newSVpvn("", 0);
3485 SvGROW(sv, sizeof(struct perl_thread) + 1);
3486 SvCUR_set(sv, sizeof(struct perl_thread));
3487 thr = (Thread) SvPVX(sv);
3489 memset(thr, 0xab, sizeof(struct perl_thread));
3496 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3498 Zero(thr, 1, struct perl_thread);
3504 PL_curcop = &PL_compiling;
3505 thr->interp = t->interp;
3506 thr->cvcache = newHV();
3507 thr->threadsv = newAV();
3508 thr->specific = newAV();
3509 thr->errsv = newSVpvn("", 0);
3510 thr->flags = THRf_R_JOINABLE;
3511 MUTEX_INIT(&thr->mutex);
3515 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3518 PL_statname = NEWSV(66,0);
3519 PL_errors = newSVpvn("", 0);
3521 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3522 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3523 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3524 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3525 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3527 PL_reginterp_cnt = 0;
3528 PL_lastscream = Nullsv;
3531 PL_reg_start_tmp = 0;
3532 PL_reg_start_tmpl = 0;
3533 PL_reg_poscache = Nullch;
3535 /* parent thread's data needs to be locked while we make copy */
3536 MUTEX_LOCK(&t->mutex);
3538 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3539 PL_protect = t->Tprotect;
3542 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3543 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3544 PL_curstash = t->Tcurstash; /* always be set to main? */
3546 PL_tainted = t->Ttainted;
3547 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3548 PL_nrs = newSVsv(t->Tnrs);
3549 PL_rs = SvREFCNT_inc(PL_nrs);
3550 PL_last_in_gv = Nullgv;
3551 PL_ofslen = t->Tofslen;
3552 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3553 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3554 PL_chopset = t->Tchopset;
3555 PL_bodytarget = newSVsv(t->Tbodytarget);
3556 PL_toptarget = newSVsv(t->Ttoptarget);
3557 if (t->Tformtarget == t->Ttoptarget)
3558 PL_formtarget = PL_toptarget;
3560 PL_formtarget = PL_bodytarget;
3562 /* Initialise all per-thread SVs that the template thread used */
3563 svp = AvARRAY(t->threadsv);
3564 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3565 if (*svp && *svp != &PL_sv_undef) {
3566 SV *sv = newSVsv(*svp);
3567 av_store(thr->threadsv, i, sv);
3568 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3569 DEBUG_S(PerlIO_printf(Perl_debug_log,
3570 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3574 thr->threadsvp = AvARRAY(thr->threadsv);
3576 MUTEX_LOCK(&PL_threads_mutex);
3578 thr->tid = ++PL_threadnum;
3579 thr->next = t->next;
3582 thr->next->prev = thr;
3583 MUTEX_UNLOCK(&PL_threads_mutex);
3585 /* done copying parent's state */
3586 MUTEX_UNLOCK(&t->mutex);
3588 #ifdef HAVE_THREAD_INTERN
3589 Perl_init_thread_intern(thr);
3590 #endif /* HAVE_THREAD_INTERN */
3593 #endif /* USE_THREADS */
3597 * This hack is to force load of "huge" support from libm.a
3598 * So it is in perl for (say) POSIX to use.
3599 * Needed for SunOS with Sun's 'acc' for example.
3608 #ifdef PERL_GLOBAL_STRUCT
3617 Perl_get_op_names(pTHX)
3623 Perl_get_op_descs(pTHX)
3629 Perl_get_no_modify(pTHX)
3631 return (char*)PL_no_modify;
3635 Perl_get_opargs(pTHX)
3641 Perl_get_ppaddr(pTHX)
3646 #ifndef HAS_GETENV_LEN
3648 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3650 char *env_trans = PerlEnv_getenv(env_elem);
3652 *len = strlen(env_trans);
3659 Perl_get_vtbl(pTHX_ int vtbl_id)
3661 MGVTBL* result = Null(MGVTBL*);
3665 result = &PL_vtbl_sv;
3668 result = &PL_vtbl_env;
3670 case want_vtbl_envelem:
3671 result = &PL_vtbl_envelem;
3674 result = &PL_vtbl_sig;
3676 case want_vtbl_sigelem:
3677 result = &PL_vtbl_sigelem;
3679 case want_vtbl_pack:
3680 result = &PL_vtbl_pack;
3682 case want_vtbl_packelem:
3683 result = &PL_vtbl_packelem;
3685 case want_vtbl_dbline:
3686 result = &PL_vtbl_dbline;
3689 result = &PL_vtbl_isa;
3691 case want_vtbl_isaelem:
3692 result = &PL_vtbl_isaelem;
3694 case want_vtbl_arylen:
3695 result = &PL_vtbl_arylen;
3697 case want_vtbl_glob:
3698 result = &PL_vtbl_glob;
3700 case want_vtbl_mglob:
3701 result = &PL_vtbl_mglob;
3703 case want_vtbl_nkeys:
3704 result = &PL_vtbl_nkeys;
3706 case want_vtbl_taint:
3707 result = &PL_vtbl_taint;
3709 case want_vtbl_substr:
3710 result = &PL_vtbl_substr;
3713 result = &PL_vtbl_vec;
3716 result = &PL_vtbl_pos;
3719 result = &PL_vtbl_bm;
3722 result = &PL_vtbl_fm;
3724 case want_vtbl_uvar:
3725 result = &PL_vtbl_uvar;
3728 case want_vtbl_mutex:
3729 result = &PL_vtbl_mutex;
3732 case want_vtbl_defelem:
3733 result = &PL_vtbl_defelem;
3735 case want_vtbl_regexp:
3736 result = &PL_vtbl_regexp;
3738 case want_vtbl_regdata:
3739 result = &PL_vtbl_regdata;
3741 case want_vtbl_regdatum:
3742 result = &PL_vtbl_regdatum;
3744 #ifdef USE_LOCALE_COLLATE
3745 case want_vtbl_collxfrm:
3746 result = &PL_vtbl_collxfrm;
3749 case want_vtbl_amagic:
3750 result = &PL_vtbl_amagic;
3752 case want_vtbl_amagicelem:
3753 result = &PL_vtbl_amagicelem;
3755 case want_vtbl_backref:
3756 result = &PL_vtbl_backref;
3763 Perl_my_fflush_all(pTHX)
3766 return PerlIO_flush(NULL);
3769 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3770 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3771 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3773 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3774 open_max = sysconf(_SC_OPEN_MAX);
3777 open_max = FOPEN_MAX;
3780 open_max = OPEN_MAX;
3791 for (i = 0; i < open_max; i++)
3792 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3793 STDIO_STREAM_ARRAY[i]._file < open_max &&
3794 STDIO_STREAM_ARRAY[i]._flag)
3795 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3799 SETERRNO(EBADF,RMS$_IFI);
3805 Perl_my_atof(pTHX_ const char* s)
3807 #ifdef USE_LOCALE_NUMERIC
3808 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3812 SET_NUMERIC_STANDARD();
3814 SET_NUMERIC_LOCAL();
3815 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3820 return Perl_atof(s);
3822 return Perl_atof(s);
3827 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3834 sv = sv_newmortal();
3835 gv_efullname3(sv, gv, Nullch);
3838 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3840 if (io && IoDIRP(io))
3841 Perl_warner(aTHX_ WARN_CLOSED,
3842 "\t(Are you trying to call %s() on dirhandle %s?)\n",