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
47 # include <sys/file.h>
51 # include <sys/wait.h>
62 long xcount[MAXXCOUNT];
63 long lastxcount[MAXXCOUNT];
64 long xycount[MAXXCOUNT][MAXYCOUNT];
65 long lastxycount[MAXXCOUNT][MAXYCOUNT];
69 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70 # define FD_CLOEXEC 1 /* NeXT needs this */
73 /* paranoid version of system's malloc() */
75 /* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
82 Perl_safesysmalloc(MEM_SIZE size)
88 PerlIO_printf(Perl_error_log,
89 "Allocation too large: %lx\n", size) FLUSH;
92 #endif /* HAS_64K_LIMIT */
95 Perl_croak_nocontext("panic: malloc");
97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
98 PERL_ALLOC_CHECK(ptr);
99 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
105 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
112 /* paranoid version of system's realloc() */
115 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
119 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
120 Malloc_t PerlMem_realloc();
121 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
125 PerlIO_printf(Perl_error_log,
126 "Reallocation too large: %lx\n", size) FLUSH;
129 #endif /* HAS_64K_LIMIT */
136 return safesysmalloc(size);
139 Perl_croak_nocontext("panic: realloc");
141 ptr = PerlMem_realloc(where,size);
142 PERL_ALLOC_CHECK(ptr);
144 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
145 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
152 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
159 /* safe version of system's free() */
162 Perl_safesysfree(Malloc_t where)
165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
172 /* safe version of system's calloc() */
175 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
181 if (size * count > 0xffff) {
182 PerlIO_printf(Perl_error_log,
183 "Allocation too large: %lx\n", size * count) FLUSH;
186 #endif /* HAS_64K_LIMIT */
188 if ((long)size < 0 || (long)count < 0)
189 Perl_croak_nocontext("panic: calloc");
192 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
193 PERL_ALLOC_CHECK(ptr);
194 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
196 memset((void*)ptr, 0, size);
202 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
211 struct mem_test_strut {
219 # define ALIGN sizeof(struct mem_test_strut)
221 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
222 # define typeof_chunk(ch) \
223 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
224 # define set_typeof_chunk(ch,t) \
225 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
226 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
229 ? ((size) - 1)/8 + 5 \
233 Perl_safexmalloc(I32 x, MEM_SIZE size)
235 register char* where = (char*)safemalloc(size + ALIGN);
238 xycount[x][SIZE_TO_Y(size)]++;
239 set_typeof_chunk(where, x);
240 sizeof_chunk(where) = size;
241 return (Malloc_t)(where + ALIGN);
245 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
247 char *where = (char*)wh;
250 return safexmalloc(0,size);
253 MEM_SIZE old = sizeof_chunk(where - ALIGN);
254 int t = typeof_chunk(where - ALIGN);
255 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
257 xycount[t][SIZE_TO_Y(old)]--;
258 xycount[t][SIZE_TO_Y(size)]++;
259 xcount[t] += size - old;
260 sizeof_chunk(new) = size;
261 return (Malloc_t)(new + ALIGN);
266 Perl_safexfree(Malloc_t wh)
269 char *where = (char*)wh;
275 size = sizeof_chunk(where);
276 x = where[0] + 100 * where[1];
278 xycount[x][SIZE_TO_Y(size)]--;
283 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
285 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
287 xycount[x][SIZE_TO_Y(size)]++;
288 memset((void*)(where + ALIGN), 0, size * count);
289 set_typeof_chunk(where, x);
290 sizeof_chunk(where) = size;
291 return (Malloc_t)(where + ALIGN);
295 S_xstat(pTHX_ int flag)
297 register I32 i, j, total = 0;
298 I32 subtot[MAXYCOUNT];
300 for (j = 0; j < MAXYCOUNT; j++) {
304 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
305 for (i = 0; i < MAXXCOUNT; i++) {
307 for (j = 0; j < MAXYCOUNT; j++) {
308 subtot[j] += xycount[i][j];
311 ? xcount[i] /* Have something */
313 ? xcount[i] != lastxcount[i] /* Changed */
314 : xcount[i] > lastxcount[i])) { /* Growed */
315 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
316 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
317 lastxcount[i] = xcount[i];
318 for (j = 0; j < MAXYCOUNT; j++) {
320 ? xycount[i][j] /* Have something */
322 ? xycount[i][j] != lastxycount[i][j] /* Changed */
323 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
324 PerlIO_printf(Perl_debug_log,"%3ld ",
326 ? xycount[i][j] - lastxycount[i][j]
328 lastxycount[i][j] = xycount[i][j];
330 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
333 PerlIO_printf(Perl_debug_log, "\n");
337 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
338 for (j = 0; j < MAXYCOUNT; j++) {
340 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
342 PerlIO_printf(Perl_debug_log, " . ");
345 PerlIO_printf(Perl_debug_log, "\n");
349 #endif /* LEAKTEST */
351 /* copy a string up to some (non-backslashed) delimiter, if any */
354 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
357 for (tolen = 0; from < fromend; from++, tolen++) {
359 if (from[1] == delim)
368 else if (*from == delim)
379 /* return ptr to little string in big string, NULL if not found */
380 /* This routine was donated by Corey Satten. */
383 Perl_instr(pTHX_ register const char *big, register const char *little)
385 register const char *s, *x;
396 for (x=big,s=little; *s; /**/ ) {
405 return (char*)(big-1);
410 /* same as instr but allow embedded nulls */
413 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
415 register const char *s, *x;
416 register I32 first = *little;
417 register const char *littleend = lend;
419 if (!first && little >= littleend)
421 if (bigend - big < littleend - little)
423 bigend -= littleend - little++;
424 while (big <= bigend) {
427 for (x=big,s=little; s < littleend; /**/ ) {
434 return (char*)(big-1);
439 /* reverse of the above--find last substring */
442 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
444 register const char *bigbeg;
445 register const char *s, *x;
446 register I32 first = *little;
447 register const char *littleend = lend;
449 if (!first && little >= littleend)
450 return (char*)bigend;
452 big = bigend - (littleend - little++);
453 while (big >= bigbeg) {
456 for (x=big+2,s=little; s < littleend; /**/ ) {
463 return (char*)(big+1);
469 * Set up for a new ctype locale.
472 Perl_new_ctype(pTHX_ const char *newctype)
474 #ifdef USE_LOCALE_CTYPE
478 for (i = 0; i < 256; i++) {
480 PL_fold_locale[i] = toLOWER_LC(i);
481 else if (isLOWER_LC(i))
482 PL_fold_locale[i] = toUPPER_LC(i);
484 PL_fold_locale[i] = i;
487 #endif /* USE_LOCALE_CTYPE */
491 * Set up for a new collation locale.
494 Perl_new_collate(pTHX_ const char *newcoll)
496 #ifdef USE_LOCALE_COLLATE
499 if (PL_collation_name) {
501 Safefree(PL_collation_name);
502 PL_collation_name = NULL;
503 PL_collation_standard = TRUE;
504 PL_collxfrm_base = 0;
505 PL_collxfrm_mult = 2;
510 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
512 Safefree(PL_collation_name);
513 PL_collation_name = savepv(newcoll);
514 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
517 /* 2: at most so many chars ('a', 'b'). */
518 /* 50: surely no system expands a char more. */
519 #define XFRMBUFSIZE (2 * 50)
520 char xbuf[XFRMBUFSIZE];
521 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
522 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
523 SSize_t mult = fb - fa;
525 Perl_croak(aTHX_ "strxfrm() gets absurd");
526 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
527 PL_collxfrm_mult = mult;
531 #endif /* USE_LOCALE_COLLATE */
535 Perl_set_numeric_radix(pTHX)
537 #ifdef USE_LOCALE_NUMERIC
538 # ifdef HAS_LOCALECONV
542 if (lc && lc->decimal_point)
543 /* We assume that decimal separator aka the radix
544 * character is always a single character. If it
545 * ever is a string, this needs to be rethunk. */
546 PL_numeric_radix = *lc->decimal_point;
548 PL_numeric_radix = 0;
549 # endif /* HAS_LOCALECONV */
550 #endif /* USE_LOCALE_NUMERIC */
554 * Set up for a new numeric locale.
557 Perl_new_numeric(pTHX_ const char *newnum)
559 #ifdef USE_LOCALE_NUMERIC
562 if (PL_numeric_name) {
563 Safefree(PL_numeric_name);
564 PL_numeric_name = NULL;
565 PL_numeric_standard = TRUE;
566 PL_numeric_local = TRUE;
571 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
572 Safefree(PL_numeric_name);
573 PL_numeric_name = savepv(newnum);
574 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
575 PL_numeric_local = TRUE;
579 #endif /* USE_LOCALE_NUMERIC */
583 Perl_set_numeric_standard(pTHX)
585 #ifdef USE_LOCALE_NUMERIC
587 if (! PL_numeric_standard) {
588 setlocale(LC_NUMERIC, "C");
589 PL_numeric_standard = TRUE;
590 PL_numeric_local = FALSE;
593 #endif /* USE_LOCALE_NUMERIC */
597 Perl_set_numeric_local(pTHX)
599 #ifdef USE_LOCALE_NUMERIC
601 if (! PL_numeric_local) {
602 setlocale(LC_NUMERIC, PL_numeric_name);
603 PL_numeric_standard = FALSE;
604 PL_numeric_local = TRUE;
608 #endif /* USE_LOCALE_NUMERIC */
612 * Initialize locale awareness.
615 Perl_init_i18nl10n(pTHX_ int printwarn)
619 * 1 = set ok or not applicable,
620 * 0 = fallback to C locale,
621 * -1 = fallback to C locale failed
626 #ifdef USE_LOCALE_CTYPE
627 char *curctype = NULL;
628 #endif /* USE_LOCALE_CTYPE */
629 #ifdef USE_LOCALE_COLLATE
630 char *curcoll = NULL;
631 #endif /* USE_LOCALE_COLLATE */
632 #ifdef USE_LOCALE_NUMERIC
634 #endif /* USE_LOCALE_NUMERIC */
636 char *language = PerlEnv_getenv("LANGUAGE");
638 char *lc_all = PerlEnv_getenv("LC_ALL");
639 char *lang = PerlEnv_getenv("LANG");
640 bool setlocale_failure = FALSE;
642 #ifdef LOCALE_ENVIRON_REQUIRED
645 * Ultrix setlocale(..., "") fails if there are no environment
646 * variables from which to get a locale name.
653 if (setlocale(LC_ALL, ""))
656 setlocale_failure = TRUE;
658 if (!setlocale_failure) {
659 #ifdef USE_LOCALE_CTYPE
662 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
664 setlocale_failure = TRUE;
665 #endif /* USE_LOCALE_CTYPE */
666 #ifdef USE_LOCALE_COLLATE
668 setlocale(LC_COLLATE,
669 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
671 setlocale_failure = TRUE;
672 #endif /* USE_LOCALE_COLLATE */
673 #ifdef USE_LOCALE_NUMERIC
675 setlocale(LC_NUMERIC,
676 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
678 setlocale_failure = TRUE;
679 #endif /* USE_LOCALE_NUMERIC */
684 #endif /* !LOCALE_ENVIRON_REQUIRED */
687 if (! setlocale(LC_ALL, ""))
688 setlocale_failure = TRUE;
691 if (!setlocale_failure) {
692 #ifdef USE_LOCALE_CTYPE
693 if (! (curctype = setlocale(LC_CTYPE, "")))
694 setlocale_failure = TRUE;
695 #endif /* USE_LOCALE_CTYPE */
696 #ifdef USE_LOCALE_COLLATE
697 if (! (curcoll = setlocale(LC_COLLATE, "")))
698 setlocale_failure = TRUE;
699 #endif /* USE_LOCALE_COLLATE */
700 #ifdef USE_LOCALE_NUMERIC
701 if (! (curnum = setlocale(LC_NUMERIC, "")))
702 setlocale_failure = TRUE;
703 #endif /* USE_LOCALE_NUMERIC */
706 if (setlocale_failure) {
708 bool locwarn = (printwarn > 1 ||
710 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
715 PerlIO_printf(Perl_error_log,
716 "perl: warning: Setting locale failed.\n");
720 PerlIO_printf(Perl_error_log,
721 "perl: warning: Setting locale failed for the categories:\n\t");
722 #ifdef USE_LOCALE_CTYPE
724 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
725 #endif /* USE_LOCALE_CTYPE */
726 #ifdef USE_LOCALE_COLLATE
728 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
729 #endif /* USE_LOCALE_COLLATE */
730 #ifdef USE_LOCALE_NUMERIC
732 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
733 #endif /* USE_LOCALE_NUMERIC */
734 PerlIO_printf(Perl_error_log, "\n");
738 PerlIO_printf(Perl_error_log,
739 "perl: warning: Please check that your locale settings:\n");
742 PerlIO_printf(Perl_error_log,
743 "\tLANGUAGE = %c%s%c,\n",
744 language ? '"' : '(',
745 language ? language : "unset",
746 language ? '"' : ')');
749 PerlIO_printf(Perl_error_log,
750 "\tLC_ALL = %c%s%c,\n",
752 lc_all ? lc_all : "unset",
757 for (e = environ; *e; e++) {
758 if (strnEQ(*e, "LC_", 3)
759 && strnNE(*e, "LC_ALL=", 7)
760 && (p = strchr(*e, '=')))
761 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
762 (int)(p - *e), *e, p + 1);
766 PerlIO_printf(Perl_error_log,
769 lang ? lang : "unset",
772 PerlIO_printf(Perl_error_log,
773 " are supported and installed on your system.\n");
778 if (setlocale(LC_ALL, "C")) {
780 PerlIO_printf(Perl_error_log,
781 "perl: warning: Falling back to the standard locale (\"C\").\n");
786 PerlIO_printf(Perl_error_log,
787 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
794 #ifdef USE_LOCALE_CTYPE
795 || !(curctype || setlocale(LC_CTYPE, "C"))
796 #endif /* USE_LOCALE_CTYPE */
797 #ifdef USE_LOCALE_COLLATE
798 || !(curcoll || setlocale(LC_COLLATE, "C"))
799 #endif /* USE_LOCALE_COLLATE */
800 #ifdef USE_LOCALE_NUMERIC
801 || !(curnum || setlocale(LC_NUMERIC, "C"))
802 #endif /* USE_LOCALE_NUMERIC */
806 PerlIO_printf(Perl_error_log,
807 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
811 #endif /* ! LC_ALL */
813 #ifdef USE_LOCALE_CTYPE
814 curctype = setlocale(LC_CTYPE, Nullch);
815 #endif /* USE_LOCALE_CTYPE */
816 #ifdef USE_LOCALE_COLLATE
817 curcoll = setlocale(LC_COLLATE, Nullch);
818 #endif /* USE_LOCALE_COLLATE */
819 #ifdef USE_LOCALE_NUMERIC
820 curnum = setlocale(LC_NUMERIC, Nullch);
821 #endif /* USE_LOCALE_NUMERIC */
824 #ifdef USE_LOCALE_CTYPE
826 #endif /* USE_LOCALE_CTYPE */
828 #ifdef USE_LOCALE_COLLATE
829 new_collate(curcoll);
830 #endif /* USE_LOCALE_COLLATE */
832 #ifdef USE_LOCALE_NUMERIC
834 #endif /* USE_LOCALE_NUMERIC */
836 #endif /* USE_LOCALE */
841 /* Backwards compatibility. */
843 Perl_init_i18nl14n(pTHX_ int printwarn)
845 return init_i18nl10n(printwarn);
848 #ifdef USE_LOCALE_COLLATE
851 * mem_collxfrm() is a bit like strxfrm() but with two important
852 * differences. First, it handles embedded NULs. Second, it allocates
853 * a bit more memory than needed for the transformed data itself.
854 * The real transformed data begins at offset sizeof(collationix).
855 * Please see sv_collxfrm() to see how this is used.
858 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
861 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
863 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
864 /* the +1 is for the terminating NUL. */
866 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
867 New(171, xbuf, xAlloc, char);
871 *(U32*)xbuf = PL_collation_ix;
872 xout = sizeof(PL_collation_ix);
873 for (xin = 0; xin < len; ) {
877 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
880 if (xused < xAlloc - xout)
882 xAlloc = (2 * xAlloc) + 1;
883 Renew(xbuf, xAlloc, char);
888 xin += strlen(s + xin) + 1;
891 /* Embedded NULs are understood but silently skipped
892 * because they make no sense in locale collation. */
896 *xlen = xout - sizeof(PL_collation_ix);
905 #endif /* USE_LOCALE_COLLATE */
907 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
909 /* As a space optimization, we do not compile tables for strings of length
910 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
911 special-cased in fbm_instr().
913 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
916 =for apidoc fbm_compile
918 Analyses the string in order to make fast searches on it using fbm_instr()
919 -- the Boyer-Moore algorithm.
925 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
934 if (flags & FBMcf_TAIL)
935 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
936 s = (U8*)SvPV_force(sv, len);
937 (void)SvUPGRADE(sv, SVt_PVBM);
938 if (len == 0) /* TAIL might be on on a zero-length string. */
948 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
949 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
950 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
951 memset((void*)table, mlen, 256);
952 table[-1] = (U8)flags;
954 sb = s - mlen + 1; /* first char (maybe) */
956 if (table[*s] == mlen)
961 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
964 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
965 for (i = 0; i < len; i++) {
966 if (PL_freq[s[i]] < frequency) {
968 frequency = PL_freq[s[i]];
971 BmRARE(sv) = s[rarest];
972 BmPREVIOUS(sv) = rarest;
973 BmUSEFUL(sv) = 100; /* Initial value */
974 if (flags & FBMcf_TAIL)
976 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
977 BmRARE(sv),BmPREVIOUS(sv)));
980 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
981 /* If SvTAIL is actually due to \Z or \z, this gives false positives
985 =for apidoc fbm_instr
987 Returns the location of the SV in the string delimited by C<str> and
988 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
989 does not have to be fbm_compiled, but the search will not be as fast
996 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
998 register unsigned char *s;
1000 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1001 register STRLEN littlelen = l;
1002 register I32 multiline = flags & FBMrf_MULTILINE;
1004 if (bigend - big < littlelen) {
1006 if ( SvTAIL(littlestr)
1007 && (bigend - big == littlelen - 1)
1009 || *big == *little && memEQ(big, little, littlelen - 1)))
1014 if (littlelen <= 2) { /* Special-cased */
1017 if (littlelen == 1) {
1018 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1019 /* Know that bigend != big. */
1020 if (bigend[-1] == '\n')
1021 return (char *)(bigend - 1);
1022 return (char *) bigend;
1025 while (s < bigend) {
1030 if (SvTAIL(littlestr))
1031 return (char *) bigend;
1035 return (char*)big; /* Cannot be SvTAIL! */
1037 /* littlelen is 2 */
1038 if (SvTAIL(littlestr) && !multiline) {
1039 if (bigend[-1] == '\n' && bigend[-2] == *little)
1040 return (char*)bigend - 2;
1041 if (bigend[-1] == *little)
1042 return (char*)bigend - 1;
1046 /* This should be better than FBM if c1 == c2, and almost
1047 as good otherwise: maybe better since we do less indirection.
1048 And we save a lot of memory by caching no table. */
1049 register unsigned char c1 = little[0];
1050 register unsigned char c2 = little[1];
1055 while (s <= bigend) {
1058 return (char*)s - 1;
1065 goto check_1char_anchor;
1076 goto check_1char_anchor;
1079 while (s <= bigend) {
1082 return (char*)s - 1;
1084 goto check_1char_anchor;
1093 check_1char_anchor: /* One char and anchor! */
1094 if (SvTAIL(littlestr) && (*bigend == *little))
1095 return (char *)bigend; /* bigend is already decremented. */
1098 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1099 s = bigend - littlelen;
1100 if (s >= big && bigend[-1] == '\n' && *s == *little
1101 /* Automatically of length > 2 */
1102 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1104 return (char*)s; /* how sweet it is */
1107 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1109 return (char*)s + 1; /* how sweet it is */
1113 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1114 char *b = ninstr((char*)big,(char*)bigend,
1115 (char*)little, (char*)little + littlelen);
1117 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1118 /* Chop \n from littlestr: */
1119 s = bigend - littlelen + 1;
1121 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1130 { /* Do actual FBM. */
1131 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1132 register unsigned char *oldlittle;
1134 if (littlelen > bigend - big)
1136 --littlelen; /* Last char found by table lookup */
1138 s = big + littlelen;
1139 little += littlelen; /* last char */
1146 if ((tmp = table[*s])) {
1148 if (bigend - s > tmp) {
1154 if ((s += tmp) < bigend)
1159 else { /* less expensive than calling strncmp() */
1160 register unsigned char *olds = s;
1165 if (*--s == *--little)
1168 s = olds + 1; /* here we pay the price for failure */
1170 if (s < bigend) /* fake up continue to outer loop */
1178 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1179 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1180 return (char*)bigend - littlelen;
1185 /* start_shift, end_shift are positive quantities which give offsets
1186 of ends of some substring of bigstr.
1187 If `last' we want the last occurence.
1188 old_posp is the way of communication between consequent calls if
1189 the next call needs to find the .
1190 The initial *old_posp should be -1.
1192 Note that we take into account SvTAIL, so one can get extra
1193 optimizations if _ALL flag is set.
1196 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1197 if PL_multiline. In fact if !PL_multiline the autoritative answer
1198 is not supported yet. */
1201 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1204 register unsigned char *s, *x;
1205 register unsigned char *big;
1207 register I32 previous;
1209 register unsigned char *little;
1210 register I32 stop_pos;
1211 register unsigned char *littleend;
1215 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1216 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1218 if ( BmRARE(littlestr) == '\n'
1219 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1220 little = (unsigned char *)(SvPVX(littlestr));
1221 littleend = little + SvCUR(littlestr);
1228 little = (unsigned char *)(SvPVX(littlestr));
1229 littleend = little + SvCUR(littlestr);
1231 /* The value of pos we can start at: */
1232 previous = BmPREVIOUS(littlestr);
1233 big = (unsigned char *)(SvPVX(bigstr));
1234 /* The value of pos we can stop at: */
1235 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1236 if (previous + start_shift > stop_pos) {
1237 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1241 while (pos < previous + start_shift) {
1242 if (!(pos += PL_screamnext[pos]))
1247 if (pos >= stop_pos) break;
1248 if (big[pos-previous] != first)
1250 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1256 if (s == littleend) {
1258 if (!last) return (char *)(big+pos-previous);
1261 } while ( pos += PL_screamnext[pos] );
1262 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1263 #else /* !POINTERRIGOR */
1266 if (pos >= stop_pos) break;
1267 if (big[pos] != first)
1269 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1275 if (s == littleend) {
1277 if (!last) return (char *)(big+pos);
1280 } while ( pos += PL_screamnext[pos] );
1282 return (char *)(big+(*old_posp));
1283 #endif /* POINTERRIGOR */
1285 if (!SvTAIL(littlestr) || (end_shift > 0))
1287 /* Ignore the trailing "\n". This code is not microoptimized */
1288 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1289 stop_pos = littleend - little; /* Actual littlestr len */
1294 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1300 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1302 register U8 *a = (U8 *)s1;
1303 register U8 *b = (U8 *)s2;
1305 if (*a != *b && *a != PL_fold[*b])
1313 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1315 register U8 *a = (U8 *)s1;
1316 register U8 *b = (U8 *)s2;
1318 if (*a != *b && *a != PL_fold_locale[*b])
1325 /* copy a string to a safe spot */
1330 Copy a string to a safe spot. This does not use an SV.
1336 Perl_savepv(pTHX_ const char *sv)
1338 register char *newaddr;
1340 New(902,newaddr,strlen(sv)+1,char);
1341 (void)strcpy(newaddr,sv);
1345 /* same thing but with a known length */
1350 Copy a string to a safe spot. The C<len> indicates number of bytes to
1351 copy. This does not use an SV.
1357 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1359 register char *newaddr;
1361 New(903,newaddr,len+1,char);
1362 Copy(sv,newaddr,len,char); /* might not be null terminated */
1363 newaddr[len] = '\0'; /* is now */
1367 /* the SV for Perl_form() and mess() is not kept in an arena */
1377 return sv_2mortal(newSVpvn("",0));
1382 /* Create as PVMG now, to avoid any upgrading later */
1383 New(905, sv, 1, SV);
1384 Newz(905, any, 1, XPVMG);
1385 SvFLAGS(sv) = SVt_PVMG;
1386 SvANY(sv) = (void*)any;
1387 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1392 #if defined(PERL_IMPLICIT_CONTEXT)
1394 Perl_form_nocontext(const char* pat, ...)
1399 va_start(args, pat);
1400 retval = vform(pat, &args);
1404 #endif /* PERL_IMPLICIT_CONTEXT */
1407 Perl_form(pTHX_ const char* pat, ...)
1411 va_start(args, pat);
1412 retval = vform(pat, &args);
1418 Perl_vform(pTHX_ const char *pat, va_list *args)
1420 SV *sv = mess_alloc();
1421 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1425 #if defined(PERL_IMPLICIT_CONTEXT)
1427 Perl_mess_nocontext(const char *pat, ...)
1432 va_start(args, pat);
1433 retval = vmess(pat, &args);
1437 #endif /* PERL_IMPLICIT_CONTEXT */
1440 Perl_mess(pTHX_ const char *pat, ...)
1444 va_start(args, pat);
1445 retval = vmess(pat, &args);
1451 Perl_vmess(pTHX_ const char *pat, va_list *args)
1453 SV *sv = mess_alloc();
1454 static char dgd[] = " during global destruction.\n";
1456 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1457 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1459 if (CopLINE(PL_curcop))
1460 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1461 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1462 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1463 bool line_mode = (RsSIMPLE(PL_rs) &&
1464 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1465 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1466 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1467 line_mode ? "line" : "chunk",
1468 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1472 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1474 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1480 Perl_vdie(pTHX_ const char* pat, va_list *args)
1484 int was_in_eval = PL_in_eval;
1491 DEBUG_S(PerlIO_printf(Perl_debug_log,
1492 "%p: die: curstack = %p, mainstack = %p\n",
1493 thr, PL_curstack, PL_mainstack));
1496 msv = vmess(pat, args);
1497 if (PL_errors && SvCUR(PL_errors)) {
1498 sv_catsv(PL_errors, msv);
1499 message = SvPV(PL_errors, msglen);
1500 SvCUR_set(PL_errors, 0);
1503 message = SvPV(msv,msglen);
1510 DEBUG_S(PerlIO_printf(Perl_debug_log,
1511 "%p: die: message = %s\ndiehook = %p\n",
1512 thr, message, PL_diehook));
1514 /* sv_2cv might call Perl_croak() */
1515 SV *olddiehook = PL_diehook;
1517 SAVESPTR(PL_diehook);
1518 PL_diehook = Nullsv;
1519 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1521 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1527 msg = newSVpvn(message, msglen);
1535 PUSHSTACKi(PERLSI_DIEHOOK);
1539 call_sv((SV*)cv, G_DISCARD);
1545 PL_restartop = die_where(message, msglen);
1546 DEBUG_S(PerlIO_printf(Perl_debug_log,
1547 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1548 thr, PL_restartop, was_in_eval, PL_top_env));
1549 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1551 return PL_restartop;
1554 #if defined(PERL_IMPLICIT_CONTEXT)
1556 Perl_die_nocontext(const char* pat, ...)
1561 va_start(args, pat);
1562 o = vdie(pat, &args);
1566 #endif /* PERL_IMPLICIT_CONTEXT */
1569 Perl_die(pTHX_ const char* pat, ...)
1573 va_start(args, pat);
1574 o = vdie(pat, &args);
1580 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1590 msv = vmess(pat, args);
1591 if (PL_errors && SvCUR(PL_errors)) {
1592 sv_catsv(PL_errors, msv);
1593 message = SvPV(PL_errors, msglen);
1594 SvCUR_set(PL_errors, 0);
1597 message = SvPV(msv,msglen);
1599 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1600 PTR2UV(thr), message));
1603 /* sv_2cv might call Perl_croak() */
1604 SV *olddiehook = PL_diehook;
1606 SAVESPTR(PL_diehook);
1607 PL_diehook = Nullsv;
1608 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1610 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1615 msg = newSVpvn(message, msglen);
1619 PUSHSTACKi(PERLSI_DIEHOOK);
1623 call_sv((SV*)cv, G_DISCARD);
1629 PL_restartop = die_where(message, msglen);
1634 /* SFIO can really mess with your errno */
1637 PerlIO *serr = Perl_error_log;
1639 PerlIO_write(serr, message, msglen);
1640 (void)PerlIO_flush(serr);
1648 #if defined(PERL_IMPLICIT_CONTEXT)
1650 Perl_croak_nocontext(const char *pat, ...)
1654 va_start(args, pat);
1659 #endif /* PERL_IMPLICIT_CONTEXT */
1664 This is the XSUB-writer's interface to Perl's C<die> function. Use this
1665 function the same way you use the C C<printf> function. See
1672 Perl_croak(pTHX_ const char *pat, ...)
1675 va_start(args, pat);
1682 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1691 msv = vmess(pat, args);
1692 message = SvPV(msv, msglen);
1695 /* sv_2cv might call Perl_warn() */
1697 SV *oldwarnhook = PL_warnhook;
1699 SAVESPTR(PL_warnhook);
1700 PL_warnhook = Nullsv;
1701 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1703 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1708 msg = newSVpvn(message, msglen);
1712 PUSHSTACKi(PERLSI_WARNHOOK);
1716 call_sv((SV*)cv, G_DISCARD);
1723 PerlIO *serr = Perl_error_log;
1725 PerlIO_write(serr, message, msglen);
1727 DEBUG_L(*message == '!'
1728 ? (xstat(message[1]=='!'
1729 ? (message[2]=='!' ? 2 : 1)
1734 (void)PerlIO_flush(serr);
1738 #if defined(PERL_IMPLICIT_CONTEXT)
1740 Perl_warn_nocontext(const char *pat, ...)
1744 va_start(args, pat);
1748 #endif /* PERL_IMPLICIT_CONTEXT */
1753 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1754 function the same way you use the C C<printf> function. See
1761 Perl_warn(pTHX_ const char *pat, ...)
1764 va_start(args, pat);
1769 #if defined(PERL_IMPLICIT_CONTEXT)
1771 Perl_warner_nocontext(U32 err, const char *pat, ...)
1775 va_start(args, pat);
1776 vwarner(err, pat, &args);
1779 #endif /* PERL_IMPLICIT_CONTEXT */
1782 Perl_warner(pTHX_ U32 err, const char* pat,...)
1785 va_start(args, pat);
1786 vwarner(err, pat, &args);
1791 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1801 msv = vmess(pat, args);
1802 message = SvPV(msv, msglen);
1806 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1807 #endif /* USE_THREADS */
1809 /* sv_2cv might call Perl_croak() */
1810 SV *olddiehook = PL_diehook;
1812 SAVESPTR(PL_diehook);
1813 PL_diehook = Nullsv;
1814 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1816 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1821 msg = newSVpvn(message, msglen);
1828 call_sv((SV*)cv, G_DISCARD);
1834 PL_restartop = die_where(message, msglen);
1838 PerlIO *serr = Perl_error_log;
1839 PerlIO_write(serr, message, msglen);
1840 (void)PerlIO_flush(serr);
1847 /* sv_2cv might call Perl_warn() */
1849 SV *oldwarnhook = PL_warnhook;
1851 SAVESPTR(PL_warnhook);
1852 PL_warnhook = Nullsv;
1853 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1855 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1860 msg = newSVpvn(message, msglen);
1867 call_sv((SV*)cv, G_DISCARD);
1874 PerlIO *serr = Perl_error_log;
1875 PerlIO_write(serr, message, msglen);
1879 (void)PerlIO_flush(serr);
1884 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1885 #if !defined(WIN32) && !defined(__CYGWIN__)
1887 Perl_my_setenv(pTHX_ char *nam, char *val)
1889 #ifndef PERL_USE_SAFE_PUTENV
1890 /* most putenv()s leak, so we manipulate environ directly */
1891 register I32 i=setenv_getix(nam); /* where does it go? */
1893 if (environ == PL_origenviron) { /* need we copy environment? */
1899 for (max = i; environ[max]; max++) ;
1900 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1901 for (j=0; j<max; j++) { /* copy environment */
1902 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1903 strcpy(tmpenv[j], environ[j]);
1905 tmpenv[max] = Nullch;
1906 environ = tmpenv; /* tell exec where it is now */
1909 safesysfree(environ[i]);
1910 while (environ[i]) {
1911 environ[i] = environ[i+1];
1916 if (!environ[i]) { /* does not exist yet */
1917 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1918 environ[i+1] = Nullch; /* make sure it's null terminated */
1921 safesysfree(environ[i]);
1922 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1924 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1926 #else /* PERL_USE_SAFE_PUTENV */
1929 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1930 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1931 (void)putenv(new_env);
1932 #endif /* PERL_USE_SAFE_PUTENV */
1935 #else /* WIN32 || __CYGWIN__ */
1936 #if defined(__CYGWIN__)
1938 * Save environ of perl.exe, currently Cygwin links in separate environ's
1939 * for each exe/dll. Probably should be a member of impure_ptr.
1941 static char ***Perl_main_environ;
1944 Perl_my_setenv_init(char ***penviron)
1946 Perl_main_environ = penviron;
1950 Perl_my_setenv(pTHX_ char *nam, char *val)
1952 /* You can not directly manipulate the environ[] array because
1953 * the routines do some additional work that syncs the Cygwin
1954 * environment with the Windows environment.
1956 char *oldstr = environ[setenv_getix(nam)];
1962 safesysfree(oldstr);
1965 setenv(nam, val, 1);
1966 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1967 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1968 safesysfree(oldstr);
1970 #else /* if WIN32 */
1973 Perl_my_setenv(pTHX_ char *nam,char *val)
1976 #ifdef USE_WIN32_RTL_ENV
1978 register char *envstr;
1979 STRLEN namlen = strlen(nam);
1981 char *oldstr = environ[setenv_getix(nam)];
1983 /* putenv() has totally broken semantics in both the Borland
1984 * and Microsoft CRTLs. They either store the passed pointer in
1985 * the environment without making a copy, or make a copy and don't
1986 * free it. And on top of that, they dont free() old entries that
1987 * are being replaced/deleted. This means the caller must
1988 * free any old entries somehow, or we end up with a memory
1989 * leak every time my_setenv() is called. One might think
1990 * one could directly manipulate environ[], like the UNIX code
1991 * above, but direct changes to environ are not allowed when
1992 * calling putenv(), since the RTLs maintain an internal
1993 * *copy* of environ[]. Bad, bad, *bad* stink.
2004 vallen = strlen(val);
2005 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2006 (void)sprintf(envstr,"%s=%s",nam,val);
2007 (void)PerlEnv_putenv(envstr);
2009 safesysfree(oldstr);
2011 safesysfree(envstr); /* MSVCRT leaks without this */
2014 #else /* !USE_WIN32_RTL_ENV */
2016 register char *envstr;
2017 STRLEN len = strlen(nam) + 3;
2022 New(904, envstr, len, char);
2023 (void)sprintf(envstr,"%s=%s",nam,val);
2024 (void)PerlEnv_putenv(envstr);
2034 Perl_setenv_getix(pTHX_ char *nam)
2036 register I32 i, len = strlen(nam);
2038 for (i = 0; environ[i]; i++) {
2041 strnicmp(environ[i],nam,len) == 0
2043 strnEQ(environ[i],nam,len)
2045 && environ[i][len] == '=')
2046 break; /* strnEQ must come first to avoid */
2047 } /* potential SEGV's */
2053 #ifdef UNLINK_ALL_VERSIONS
2055 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2059 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2064 /* this is a drop-in replacement for bcopy() */
2065 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2067 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2071 if (from - to >= 0) {
2079 *(--to) = *(--from);
2085 /* this is a drop-in replacement for memset() */
2088 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2098 /* this is a drop-in replacement for bzero() */
2099 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2101 Perl_my_bzero(register char *loc, register I32 len)
2111 /* this is a drop-in replacement for memcmp() */
2112 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2114 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2116 register U8 *a = (U8 *)s1;
2117 register U8 *b = (U8 *)s2;
2121 if (tmp = *a++ - *b++)
2126 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2130 #ifdef USE_CHAR_VSPRINTF
2135 vsprintf(char *dest, const char *pat, char *args)
2139 fakebuf._ptr = dest;
2140 fakebuf._cnt = 32767;
2144 fakebuf._flag = _IOWRT|_IOSTRG;
2145 _doprnt(pat, args, &fakebuf); /* what a kludge */
2146 (void)putc('\0', &fakebuf);
2147 #ifdef USE_CHAR_VSPRINTF
2150 return 0; /* perl doesn't use return value */
2154 #endif /* HAS_VPRINTF */
2157 #if BYTEORDER != 0x4321
2159 Perl_my_swap(pTHX_ short s)
2161 #if (BYTEORDER & 1) == 0
2164 result = ((s & 255) << 8) + ((s >> 8) & 255);
2172 Perl_my_htonl(pTHX_ long l)
2176 char c[sizeof(long)];
2179 #if BYTEORDER == 0x1234
2180 u.c[0] = (l >> 24) & 255;
2181 u.c[1] = (l >> 16) & 255;
2182 u.c[2] = (l >> 8) & 255;
2186 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2187 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2192 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2193 u.c[o & 0xf] = (l >> s) & 255;
2201 Perl_my_ntohl(pTHX_ long l)
2205 char c[sizeof(long)];
2208 #if BYTEORDER == 0x1234
2209 u.c[0] = (l >> 24) & 255;
2210 u.c[1] = (l >> 16) & 255;
2211 u.c[2] = (l >> 8) & 255;
2215 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2216 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2223 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2224 l |= (u.c[o & 0xf] & 255) << s;
2231 #endif /* BYTEORDER != 0x4321 */
2235 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2236 * If these functions are defined,
2237 * the BYTEORDER is neither 0x1234 nor 0x4321.
2238 * However, this is not assumed.
2242 #define HTOV(name,type) \
2244 name (register type n) \
2248 char c[sizeof(type)]; \
2252 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2253 u.c[i] = (n >> s) & 0xFF; \
2258 #define VTOH(name,type) \
2260 name (register type n) \
2264 char c[sizeof(type)]; \
2270 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2271 n += (u.c[i] & 0xFF) << s; \
2276 #if defined(HAS_HTOVS) && !defined(htovs)
2279 #if defined(HAS_HTOVL) && !defined(htovl)
2282 #if defined(HAS_VTOHS) && !defined(vtohs)
2285 #if defined(HAS_VTOHL) && !defined(vtohl)
2289 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2290 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2292 Perl_my_popen(pTHX_ char *cmd, char *mode)
2295 register I32 This, that;
2298 I32 doexec = strNE(cmd,"-");
2302 PERL_FLUSHALL_FOR_CHILD;
2305 return my_syspopen(cmd,mode);
2308 This = (*mode == 'w');
2310 if (doexec && PL_tainting) {
2312 taint_proper("Insecure %s%s", "EXEC");
2314 if (PerlProc_pipe(p) < 0)
2316 if (doexec && PerlProc_pipe(pp) >= 0)
2318 while ((pid = (doexec?vfork():fork())) < 0) {
2319 if (errno != EAGAIN) {
2320 PerlLIO_close(p[This]);
2322 PerlLIO_close(pp[0]);
2323 PerlLIO_close(pp[1]);
2326 Perl_croak(aTHX_ "Can't fork");
2338 PerlLIO_close(p[THAT]);
2340 PerlLIO_close(pp[0]);
2341 #if defined(HAS_FCNTL) && defined(F_SETFD)
2342 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2345 if (p[THIS] != (*mode == 'r')) {
2346 PerlLIO_dup2(p[THIS], *mode == 'r');
2347 PerlLIO_close(p[THIS]);
2351 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2357 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2361 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2364 #endif /* defined OS2 */
2366 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2367 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2369 hv_clear(PL_pidstatus); /* we have no children */
2374 do_execfree(); /* free any memory malloced by child on vfork */
2375 PerlLIO_close(p[that]);
2377 PerlLIO_close(pp[1]);
2378 if (p[that] < p[This]) {
2379 PerlLIO_dup2(p[This], p[that]);
2380 PerlLIO_close(p[This]);
2383 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2384 (void)SvUPGRADE(sv,SVt_IV);
2386 PL_forkprocess = pid;
2387 if (did_pipes && pid > 0) {
2391 while (n < sizeof(int)) {
2392 n1 = PerlLIO_read(pp[0],
2393 (void*)(((char*)&errkid)+n),
2399 PerlLIO_close(pp[0]);
2401 if (n) { /* Error */
2402 if (n != sizeof(int))
2403 Perl_croak(aTHX_ "panic: kid popen errno read");
2404 errno = errkid; /* Propagate errno from kid */
2409 PerlLIO_close(pp[0]);
2410 return PerlIO_fdopen(p[This], mode);
2413 #if defined(atarist) || defined(DJGPP)
2416 Perl_my_popen(pTHX_ char *cmd, char *mode)
2418 /* Needs work for PerlIO ! */
2419 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2420 PERL_FLUSHALL_FOR_CHILD;
2421 return popen(PerlIO_exportFILE(cmd, 0), mode);
2425 #endif /* !DOSISH */
2429 Perl_dump_fds(pTHX_ char *s)
2432 struct stat tmpstatbuf;
2434 PerlIO_printf(Perl_debug_log,"%s", s);
2435 for (fd = 0; fd < 32; fd++) {
2436 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2437 PerlIO_printf(Perl_debug_log," %d",fd);
2439 PerlIO_printf(Perl_debug_log,"\n");
2441 #endif /* DUMP_FDS */
2445 dup2(int oldfd, int newfd)
2447 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2450 PerlLIO_close(newfd);
2451 return fcntl(oldfd, F_DUPFD, newfd);
2453 #define DUP2_MAX_FDS 256
2454 int fdtmp[DUP2_MAX_FDS];
2460 PerlLIO_close(newfd);
2461 /* good enough for low fd's... */
2462 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2463 if (fdx >= DUP2_MAX_FDS) {
2471 PerlLIO_close(fdtmp[--fdx]);
2478 #ifdef HAS_SIGACTION
2481 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2483 struct sigaction act, oact;
2485 act.sa_handler = handler;
2486 sigemptyset(&act.sa_mask);
2489 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2492 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2493 act.sa_flags |= SA_NOCLDWAIT;
2495 if (sigaction(signo, &act, &oact) == -1)
2498 return oact.sa_handler;
2502 Perl_rsignal_state(pTHX_ int signo)
2504 struct sigaction oact;
2506 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2509 return oact.sa_handler;
2513 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2515 struct sigaction act;
2517 act.sa_handler = handler;
2518 sigemptyset(&act.sa_mask);
2521 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2524 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2525 act.sa_flags |= SA_NOCLDWAIT;
2527 return sigaction(signo, &act, save);
2531 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2533 return sigaction(signo, save, (struct sigaction *)NULL);
2536 #else /* !HAS_SIGACTION */
2539 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2541 return PerlProc_signal(signo, handler);
2544 static int sig_trapped;
2554 Perl_rsignal_state(pTHX_ int signo)
2556 Sighandler_t oldsig;
2559 oldsig = PerlProc_signal(signo, sig_trap);
2560 PerlProc_signal(signo, oldsig);
2562 PerlProc_kill(PerlProc_getpid(), signo);
2567 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2569 *save = PerlProc_signal(signo, handler);
2570 return (*save == SIG_ERR) ? -1 : 0;
2574 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2576 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2579 #endif /* !HAS_SIGACTION */
2581 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2582 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2584 Perl_my_pclose(pTHX_ PerlIO *ptr)
2586 Sigsave_t hstat, istat, qstat;
2594 int saved_vaxc_errno;
2597 int saved_win32_errno;
2600 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2603 *svp = &PL_sv_undef;
2605 if (pid == -1) { /* Opened by popen. */
2606 return my_syspclose(ptr);
2609 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2610 saved_errno = errno;
2612 saved_vaxc_errno = vaxc$errno;
2615 saved_win32_errno = GetLastError();
2619 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2621 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2622 rsignal_save(SIGINT, SIG_IGN, &istat);
2623 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2625 pid2 = wait4pid(pid, &status, 0);
2626 } while (pid2 == -1 && errno == EINTR);
2627 rsignal_restore(SIGHUP, &hstat);
2628 rsignal_restore(SIGINT, &istat);
2629 rsignal_restore(SIGQUIT, &qstat);
2631 SETERRNO(saved_errno, saved_vaxc_errno);
2634 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2636 #endif /* !DOSISH */
2638 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2640 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2644 char spid[TYPE_CHARS(int)];
2649 sprintf(spid, "%"IVdf, (IV)pid);
2650 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2651 if (svp && *svp != &PL_sv_undef) {
2652 *statusp = SvIVX(*svp);
2653 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2660 hv_iterinit(PL_pidstatus);
2661 if (entry = hv_iternext(PL_pidstatus)) {
2662 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2663 sv = hv_iterval(PL_pidstatus,entry);
2664 *statusp = SvIVX(sv);
2665 sprintf(spid, "%"IVdf, (IV)pid);
2666 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2671 # ifdef HAS_WAITPID_RUNTIME
2672 if (!HAS_WAITPID_RUNTIME)
2675 return PerlProc_waitpid(pid,statusp,flags);
2677 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2678 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2680 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2685 Perl_croak(aTHX_ "Can't do waitpid with flags");
2687 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2688 pidgone(result,*statusp);
2696 #endif /* !DOSISH || OS2 || WIN32 */
2700 Perl_pidgone(pTHX_ Pid_t pid, int status)
2703 char spid[TYPE_CHARS(int)];
2705 sprintf(spid, "%"IVdf, (IV)pid);
2706 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2707 (void)SvUPGRADE(sv,SVt_IV);
2712 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2715 int /* Cannot prototype with I32
2717 my_syspclose(PerlIO *ptr)
2720 Perl_my_pclose(pTHX_ PerlIO *ptr)
2723 /* Needs work for PerlIO ! */
2724 FILE *f = PerlIO_findFILE(ptr);
2725 I32 result = pclose(f);
2727 result = (result << 8) & 0xff00;
2729 PerlIO_releaseFILE(ptr,f);
2735 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2738 register const char *frombase = from;
2741 register const char c = *from;
2746 while (count-- > 0) {
2747 for (todo = len; todo > 0; todo--) {
2755 Perl_cast_ulong(pTHX_ NV f)
2760 # define BIGDOUBLE 2147483648.0
2762 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2765 return (unsigned long)f;
2767 return (unsigned long)along;
2771 /* Unfortunately, on some systems the cast_uv() function doesn't
2772 work with the system-supplied definition of ULONG_MAX. The
2773 comparison (f >= ULONG_MAX) always comes out true. It must be a
2774 problem with the compiler constant folding.
2776 In any case, this workaround should be fine on any two's complement
2777 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2779 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2782 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2784 -- Kenneth Albanowski <kjahds@kjahds.com>
2788 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2792 Perl_cast_i32(pTHX_ NV f)
2795 return (I32) I32_MAX;
2797 return (I32) I32_MIN;
2802 Perl_cast_iv(pTHX_ NV f)
2807 if (f >= (NV)UV_MAX)
2818 Perl_cast_uv(pTHX_ NV f)
2821 return (UV) MY_UV_MAX;
2835 Perl_same_dirent(pTHX_ char *a, char *b)
2837 char *fa = strrchr(a,'/');
2838 char *fb = strrchr(b,'/');
2839 struct stat tmpstatbuf1;
2840 struct stat tmpstatbuf2;
2841 SV *tmpsv = sv_newmortal();
2854 sv_setpv(tmpsv, ".");
2856 sv_setpvn(tmpsv, a, fa - a);
2857 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2860 sv_setpv(tmpsv, ".");
2862 sv_setpvn(tmpsv, b, fb - b);
2863 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2865 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2866 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2868 #endif /* !HAS_RENAME */
2871 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2873 register char *s = start;
2874 register NV rnv = 0.0;
2875 register UV ruv = 0;
2876 register bool seenb = FALSE;
2877 register bool overflowed = FALSE;
2879 for (; len-- && *s; s++) {
2880 if (!(*s == '0' || *s == '1')) {
2882 continue; /* Note: does not check for __ and the like. */
2883 if (seenb == FALSE && *s == 'b' && ruv == 0) {
2884 /* Disallow 0bbb0b0bbb... */
2890 if (ckWARN(WARN_DIGIT))
2891 Perl_warner(aTHX_ WARN_DIGIT,
2892 "Illegal binary digit '%c' ignored", *s);
2897 register UV xuv = ruv << 1;
2899 if ((xuv >> 1) != ruv) {
2903 if (ckWARN_d(WARN_OVERFLOW))
2904 Perl_warner(aTHX_ WARN_OVERFLOW,
2905 "Integer overflow in binary number");
2907 ruv = xuv | (*s - '0');
2911 /* If an NV has not enough bits in its mantissa to
2912 * represent an UV this summing of small low-order numbers
2913 * is a waste of time (because the NV cannot preserve
2914 * the low-order bits anyway): we could just remember when
2915 * did we overflow and in the end just multiply rnv by the
2922 if ( ( overflowed && rnv > 4294967295.0)
2924 || (!overflowed && ruv > 0xffffffff )
2928 if (ckWARN(WARN_PORTABLE))
2929 Perl_warner(aTHX_ WARN_PORTABLE,
2930 "Binary number > 0b11111111111111111111111111111111 non-portable");
2932 *retlen = s - start;
2937 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2939 register char *s = start;
2940 register NV rnv = 0.0;
2941 register UV ruv = 0;
2942 register bool overflowed = FALSE;
2944 for (; len-- && *s; s++) {
2945 if (!(*s >= '0' && *s <= '7')) {
2947 continue; /* Note: does not check for __ and the like. */
2949 /* Allow \octal to work the DWIM way (that is, stop scanning
2950 * as soon as non-octal characters are seen, complain only iff
2951 * someone seems to want to use the digits eight and nine). */
2952 if (*s == '8' || *s == '9') {
2954 if (ckWARN(WARN_DIGIT))
2955 Perl_warner(aTHX_ WARN_DIGIT,
2956 "Illegal octal digit '%c' ignored", *s);
2962 register UV xuv = ruv << 3;
2964 if ((xuv >> 3) != ruv) {
2968 if (ckWARN_d(WARN_OVERFLOW))
2969 Perl_warner(aTHX_ WARN_OVERFLOW,
2970 "Integer overflow in octal number");
2972 ruv = xuv | (*s - '0');
2976 /* If an NV has not enough bits in its mantissa to
2977 * represent an UV this summing of small low-order numbers
2978 * is a waste of time (because the NV cannot preserve
2979 * the low-order bits anyway): we could just remember when
2980 * did we overflow and in the end just multiply rnv by the
2981 * right amount of 8-tuples. */
2982 rnv += (NV)(*s - '0');
2987 if ( ( overflowed && rnv > 4294967295.0)
2989 || (!overflowed && ruv > 0xffffffff )
2993 if (ckWARN(WARN_PORTABLE))
2994 Perl_warner(aTHX_ WARN_PORTABLE,
2995 "Octal number > 037777777777 non-portable");
2997 *retlen = s - start;
3002 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3004 register char *s = start;
3005 register NV rnv = 0.0;
3006 register UV ruv = 0;
3007 register bool seenx = FALSE;
3008 register bool overflowed = FALSE;
3011 for (; len-- && *s; s++) {
3012 hexdigit = strchr((char *) PL_hexdigit, *s);
3015 continue; /* Note: does not check for __ and the like. */
3016 if (seenx == FALSE && *s == 'x' && ruv == 0) {
3017 /* Disallow 0xxx0x0xxx... */
3023 if (ckWARN(WARN_DIGIT))
3024 Perl_warner(aTHX_ WARN_DIGIT,
3025 "Illegal hexadecimal digit '%c' ignored", *s);
3030 register UV xuv = ruv << 4;
3032 if ((xuv >> 4) != ruv) {
3036 if (ckWARN_d(WARN_OVERFLOW))
3037 Perl_warner(aTHX_ WARN_OVERFLOW,
3038 "Integer overflow in hexadecimal number");
3040 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3044 /* If an NV has not enough bits in its mantissa to
3045 * represent an UV this summing of small low-order numbers
3046 * is a waste of time (because the NV cannot preserve
3047 * the low-order bits anyway): we could just remember when
3048 * did we overflow and in the end just multiply rnv by the
3049 * right amount of 16-tuples. */
3050 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3055 if ( ( overflowed && rnv > 4294967295.0)
3057 || (!overflowed && ruv > 0xffffffff )
3061 if (ckWARN(WARN_PORTABLE))
3062 Perl_warner(aTHX_ WARN_PORTABLE,
3063 "Hexadecimal number > 0xffffffff non-portable");
3065 *retlen = s - start;
3070 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3073 char *xfound = Nullch;
3074 char *xfailed = Nullch;
3075 char tmpbuf[MAXPATHLEN];
3079 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3080 # define SEARCH_EXTS ".bat", ".cmd", NULL
3081 # define MAX_EXT_LEN 4
3084 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3085 # define MAX_EXT_LEN 4
3088 # define SEARCH_EXTS ".pl", ".com", NULL
3089 # define MAX_EXT_LEN 4
3091 /* additional extensions to try in each dir if scriptname not found */
3093 char *exts[] = { SEARCH_EXTS };
3094 char **ext = search_ext ? search_ext : exts;
3095 int extidx = 0, i = 0;
3096 char *curext = Nullch;
3098 # define MAX_EXT_LEN 0
3102 * If dosearch is true and if scriptname does not contain path
3103 * delimiters, search the PATH for scriptname.
3105 * If SEARCH_EXTS is also defined, will look for each
3106 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3107 * while searching the PATH.
3109 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3110 * proceeds as follows:
3111 * If DOSISH or VMSISH:
3112 * + look for ./scriptname{,.foo,.bar}
3113 * + search the PATH for scriptname{,.foo,.bar}
3116 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3117 * this will not look in '.' if it's not in the PATH)
3122 # ifdef ALWAYS_DEFTYPES
3123 len = strlen(scriptname);
3124 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3125 int hasdir, idx = 0, deftypes = 1;
3128 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3131 int hasdir, idx = 0, deftypes = 1;
3134 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3136 /* The first time through, just add SEARCH_EXTS to whatever we
3137 * already have, so we can check for default file types. */
3139 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3145 if ((strlen(tmpbuf) + strlen(scriptname)
3146 + MAX_EXT_LEN) >= sizeof tmpbuf)
3147 continue; /* don't search dir with too-long name */
3148 strcat(tmpbuf, scriptname);
3152 if (strEQ(scriptname, "-"))
3154 if (dosearch) { /* Look in '.' first. */
3155 char *cur = scriptname;
3157 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3159 if (strEQ(ext[i++],curext)) {
3160 extidx = -1; /* already has an ext */
3165 DEBUG_p(PerlIO_printf(Perl_debug_log,
3166 "Looking for %s\n",cur));
3167 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3168 && !S_ISDIR(PL_statbuf.st_mode)) {
3176 if (cur == scriptname) {
3177 len = strlen(scriptname);
3178 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3180 cur = strcpy(tmpbuf, scriptname);
3182 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3183 && strcpy(tmpbuf+len, ext[extidx++]));
3188 #ifdef MACOS_TRADITIONAL
3189 if (dosearch && !strchr(scriptname, ':') &&
3190 (s = PerlEnv_getenv("Commands")))
3192 if (dosearch && !strchr(scriptname, '/')
3194 && !strchr(scriptname, '\\')
3196 && (s = PerlEnv_getenv("PATH")))
3201 PL_bufend = s + strlen(s);
3202 while (s < PL_bufend) {
3203 #ifdef MACOS_TRADITIONAL
3204 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3208 #if defined(atarist) || defined(DOSISH)
3213 && *s != ';'; len++, s++) {
3214 if (len < sizeof tmpbuf)
3217 if (len < sizeof tmpbuf)
3219 #else /* ! (atarist || DOSISH) */
3220 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3223 #endif /* ! (atarist || DOSISH) */
3224 #endif /* MACOS_TRADITIONAL */
3227 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3228 continue; /* don't search dir with too-long name */
3229 #ifdef MACOS_TRADITIONAL
3230 if (len && tmpbuf[len - 1] != ':')
3231 tmpbuf[len++] = ':';
3234 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3235 && tmpbuf[len - 1] != '/'
3236 && tmpbuf[len - 1] != '\\'
3239 tmpbuf[len++] = '/';
3240 if (len == 2 && tmpbuf[0] == '.')
3243 (void)strcpy(tmpbuf + len, scriptname);
3247 len = strlen(tmpbuf);
3248 if (extidx > 0) /* reset after previous loop */
3252 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3253 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3254 if (S_ISDIR(PL_statbuf.st_mode)) {
3258 } while ( retval < 0 /* not there */
3259 && extidx>=0 && ext[extidx] /* try an extension? */
3260 && strcpy(tmpbuf+len, ext[extidx++])
3265 if (S_ISREG(PL_statbuf.st_mode)
3266 && cando(S_IRUSR,TRUE,&PL_statbuf)
3267 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3268 && cando(S_IXUSR,TRUE,&PL_statbuf)
3272 xfound = tmpbuf; /* bingo! */
3276 xfailed = savepv(tmpbuf);
3279 if (!xfound && !seen_dot && !xfailed &&
3280 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3281 || S_ISDIR(PL_statbuf.st_mode)))
3283 seen_dot = 1; /* Disable message. */
3285 if (flags & 1) { /* do or die? */
3286 Perl_croak(aTHX_ "Can't %s %s%s%s",
3287 (xfailed ? "execute" : "find"),
3288 (xfailed ? xfailed : scriptname),
3289 (xfailed ? "" : " on PATH"),
3290 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3292 scriptname = Nullch;
3296 scriptname = xfound;
3298 return (scriptname ? savepv(scriptname) : Nullch);
3304 /* Very simplistic scheduler for now */
3308 thr = thr->i.next_run;
3312 Perl_cond_init(pTHX_ perl_cond *cp)
3318 Perl_cond_signal(pTHX_ perl_cond *cp)
3321 perl_cond cond = *cp;
3326 /* Insert t in the runnable queue just ahead of us */
3327 t->i.next_run = thr->i.next_run;
3328 thr->i.next_run->i.prev_run = t;
3329 t->i.prev_run = thr;
3330 thr->i.next_run = t;
3331 thr->i.wait_queue = 0;
3332 /* Remove from the wait queue */
3338 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3341 perl_cond cond, cond_next;
3343 for (cond = *cp; cond; cond = cond_next) {
3345 /* Insert t in the runnable queue just ahead of us */
3346 t->i.next_run = thr->i.next_run;
3347 thr->i.next_run->i.prev_run = t;
3348 t->i.prev_run = thr;
3349 thr->i.next_run = t;
3350 thr->i.wait_queue = 0;
3351 /* Remove from the wait queue */
3352 cond_next = cond->next;
3359 Perl_cond_wait(pTHX_ perl_cond *cp)
3363 if (thr->i.next_run == thr)
3364 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3366 New(666, cond, 1, struct perl_wait_queue);
3370 thr->i.wait_queue = cond;
3371 /* Remove ourselves from runnable queue */
3372 thr->i.next_run->i.prev_run = thr->i.prev_run;
3373 thr->i.prev_run->i.next_run = thr->i.next_run;
3375 #endif /* FAKE_THREADS */
3377 #ifdef PTHREAD_GETSPECIFIC_INT
3378 struct perl_thread *
3383 if (pthread_getspecific(PL_thr_key, &t))
3384 Perl_croak(aTHX_ "panic: pthread_getspecific");
3385 return (struct perl_thread *) t;
3390 Perl_condpair_magic(pTHX_ SV *sv)
3394 SvUPGRADE(sv, SVt_PVMG);
3395 mg = mg_find(sv, 'm');
3399 New(53, cp, 1, condpair_t);
3400 MUTEX_INIT(&cp->mutex);
3401 COND_INIT(&cp->owner_cond);
3402 COND_INIT(&cp->cond);
3404 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3405 mg = mg_find(sv, 'm');
3407 /* someone else beat us to initialising it */
3408 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3409 MUTEX_DESTROY(&cp->mutex);
3410 COND_DESTROY(&cp->owner_cond);
3411 COND_DESTROY(&cp->cond);
3415 sv_magic(sv, Nullsv, 'm', 0, 0);
3417 mg->mg_ptr = (char *)cp;
3418 mg->mg_len = sizeof(cp);
3419 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3420 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3421 "%p: condpair_magic %p\n", thr, sv));)
3428 * Make a new perl thread structure using t as a prototype. Some of the
3429 * fields for the new thread are copied from the prototype thread, t,
3430 * so t should not be running in perl at the time this function is
3431 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3432 * thread calling new_struct_thread) clearly satisfies this constraint.
3434 struct perl_thread *
3435 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3437 #if !defined(PERL_IMPLICIT_CONTEXT)
3438 struct perl_thread *thr;
3444 sv = newSVpvn("", 0);
3445 SvGROW(sv, sizeof(struct perl_thread) + 1);
3446 SvCUR_set(sv, sizeof(struct perl_thread));
3447 thr = (Thread) SvPVX(sv);
3449 memset(thr, 0xab, sizeof(struct perl_thread));
3456 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3458 Zero(thr, 1, struct perl_thread);
3464 PL_curcop = &PL_compiling;
3465 thr->interp = t->interp;
3466 thr->cvcache = newHV();
3467 thr->threadsv = newAV();
3468 thr->specific = newAV();
3469 thr->errsv = newSVpvn("", 0);
3470 thr->flags = THRf_R_JOINABLE;
3471 MUTEX_INIT(&thr->mutex);
3475 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3478 PL_statname = NEWSV(66,0);
3479 PL_errors = newSVpvn("", 0);
3481 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3482 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3483 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3484 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3485 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3487 PL_reginterp_cnt = 0;
3488 PL_lastscream = Nullsv;
3491 PL_reg_start_tmp = 0;
3492 PL_reg_start_tmpl = 0;
3493 PL_reg_poscache = Nullch;
3495 /* parent thread's data needs to be locked while we make copy */
3496 MUTEX_LOCK(&t->mutex);
3498 PL_protect = t->Tprotect;
3500 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3501 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3502 PL_curstash = t->Tcurstash; /* always be set to main? */
3504 PL_tainted = t->Ttainted;
3505 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3506 PL_nrs = newSVsv(t->Tnrs);
3507 PL_rs = SvREFCNT_inc(PL_nrs);
3508 PL_last_in_gv = Nullgv;
3509 PL_ofslen = t->Tofslen;
3510 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3511 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3512 PL_chopset = t->Tchopset;
3513 PL_bodytarget = newSVsv(t->Tbodytarget);
3514 PL_toptarget = newSVsv(t->Ttoptarget);
3515 if (t->Tformtarget == t->Ttoptarget)
3516 PL_formtarget = PL_toptarget;
3518 PL_formtarget = PL_bodytarget;
3520 /* Initialise all per-thread SVs that the template thread used */
3521 svp = AvARRAY(t->threadsv);
3522 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3523 if (*svp && *svp != &PL_sv_undef) {
3524 SV *sv = newSVsv(*svp);
3525 av_store(thr->threadsv, i, sv);
3526 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3527 DEBUG_S(PerlIO_printf(Perl_debug_log,
3528 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3532 thr->threadsvp = AvARRAY(thr->threadsv);
3534 MUTEX_LOCK(&PL_threads_mutex);
3536 thr->tid = ++PL_threadnum;
3537 thr->next = t->next;
3540 thr->next->prev = thr;
3541 MUTEX_UNLOCK(&PL_threads_mutex);
3543 /* done copying parent's state */
3544 MUTEX_UNLOCK(&t->mutex);
3546 #ifdef HAVE_THREAD_INTERN
3547 Perl_init_thread_intern(thr);
3548 #endif /* HAVE_THREAD_INTERN */
3551 #endif /* USE_THREADS */
3555 * This hack is to force load of "huge" support from libm.a
3556 * So it is in perl for (say) POSIX to use.
3557 * Needed for SunOS with Sun's 'acc' for example.
3566 #ifdef PERL_GLOBAL_STRUCT
3575 Perl_get_op_names(pTHX)
3581 Perl_get_op_descs(pTHX)
3587 Perl_get_no_modify(pTHX)
3589 return (char*)PL_no_modify;
3593 Perl_get_opargs(pTHX)
3599 Perl_get_ppaddr(pTHX)
3604 #ifndef HAS_GETENV_LEN
3606 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3608 char *env_trans = PerlEnv_getenv(env_elem);
3610 *len = strlen(env_trans);
3617 Perl_get_vtbl(pTHX_ int vtbl_id)
3619 MGVTBL* result = Null(MGVTBL*);
3623 result = &PL_vtbl_sv;
3626 result = &PL_vtbl_env;
3628 case want_vtbl_envelem:
3629 result = &PL_vtbl_envelem;
3632 result = &PL_vtbl_sig;
3634 case want_vtbl_sigelem:
3635 result = &PL_vtbl_sigelem;
3637 case want_vtbl_pack:
3638 result = &PL_vtbl_pack;
3640 case want_vtbl_packelem:
3641 result = &PL_vtbl_packelem;
3643 case want_vtbl_dbline:
3644 result = &PL_vtbl_dbline;
3647 result = &PL_vtbl_isa;
3649 case want_vtbl_isaelem:
3650 result = &PL_vtbl_isaelem;
3652 case want_vtbl_arylen:
3653 result = &PL_vtbl_arylen;
3655 case want_vtbl_glob:
3656 result = &PL_vtbl_glob;
3658 case want_vtbl_mglob:
3659 result = &PL_vtbl_mglob;
3661 case want_vtbl_nkeys:
3662 result = &PL_vtbl_nkeys;
3664 case want_vtbl_taint:
3665 result = &PL_vtbl_taint;
3667 case want_vtbl_substr:
3668 result = &PL_vtbl_substr;
3671 result = &PL_vtbl_vec;
3674 result = &PL_vtbl_pos;
3677 result = &PL_vtbl_bm;
3680 result = &PL_vtbl_fm;
3682 case want_vtbl_uvar:
3683 result = &PL_vtbl_uvar;
3686 case want_vtbl_mutex:
3687 result = &PL_vtbl_mutex;
3690 case want_vtbl_defelem:
3691 result = &PL_vtbl_defelem;
3693 case want_vtbl_regexp:
3694 result = &PL_vtbl_regexp;
3696 case want_vtbl_regdata:
3697 result = &PL_vtbl_regdata;
3699 case want_vtbl_regdatum:
3700 result = &PL_vtbl_regdatum;
3702 #ifdef USE_LOCALE_COLLATE
3703 case want_vtbl_collxfrm:
3704 result = &PL_vtbl_collxfrm;
3707 case want_vtbl_amagic:
3708 result = &PL_vtbl_amagic;
3710 case want_vtbl_amagicelem:
3711 result = &PL_vtbl_amagicelem;
3713 case want_vtbl_backref:
3714 result = &PL_vtbl_backref;
3721 Perl_my_fflush_all(pTHX)
3724 return PerlIO_flush(NULL);
3727 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3728 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3729 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3731 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3732 open_max = sysconf(_SC_OPEN_MAX);
3735 open_max = FOPEN_MAX;
3738 open_max = OPEN_MAX;
3749 for (i = 0; i < open_max; i++)
3750 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3751 STDIO_STREAM_ARRAY[i]._file < open_max &&
3752 STDIO_STREAM_ARRAY[i]._flag)
3753 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3757 SETERRNO(EBADF,RMS$_IFI);
3763 Perl_my_atof(pTHX_ const char* s)
3765 #ifdef USE_LOCALE_NUMERIC
3766 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3770 SET_NUMERIC_STANDARD();
3772 SET_NUMERIC_LOCAL();
3773 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3778 return Perl_atof(s);
3780 return Perl_atof(s);
3785 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3792 sv = sv_newmortal();
3793 gv_efullname3(sv, gv, Nullch);
3796 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3798 if (io && IoDIRP(io))
3799 Perl_warner(aTHX_ WARN_CLOSED,
3800 "(Are you trying to call %s() on dirhandle %s?)\n",