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;
661 curctype = savepv(curctype);
662 #endif /* USE_LOCALE_CTYPE */
663 #ifdef USE_LOCALE_COLLATE
665 setlocale(LC_COLLATE,
666 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
668 setlocale_failure = TRUE;
670 curcoll = savepv(curcoll);
671 #endif /* USE_LOCALE_COLLATE */
672 #ifdef USE_LOCALE_NUMERIC
674 setlocale(LC_NUMERIC,
675 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
677 setlocale_failure = TRUE;
679 curnum = savepv(curnum);
680 #endif /* USE_LOCALE_NUMERIC */
685 #endif /* !LOCALE_ENVIRON_REQUIRED */
688 if (! setlocale(LC_ALL, ""))
689 setlocale_failure = TRUE;
692 if (!setlocale_failure) {
693 #ifdef USE_LOCALE_CTYPE
694 if (! (curctype = setlocale(LC_CTYPE, "")))
695 setlocale_failure = TRUE;
697 curctype = savepv(curctype);
698 #endif /* USE_LOCALE_CTYPE */
699 #ifdef USE_LOCALE_COLLATE
700 if (! (curcoll = setlocale(LC_COLLATE, "")))
701 setlocale_failure = TRUE;
703 curcoll = savepv(curcoll);
704 #endif /* USE_LOCALE_COLLATE */
705 #ifdef USE_LOCALE_NUMERIC
706 if (! (curnum = setlocale(LC_NUMERIC, "")))
707 setlocale_failure = TRUE;
709 curnum = savepv(curnum);
710 #endif /* USE_LOCALE_NUMERIC */
713 if (setlocale_failure) {
715 bool locwarn = (printwarn > 1 ||
717 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
722 PerlIO_printf(Perl_error_log,
723 "perl: warning: Setting locale failed.\n");
727 PerlIO_printf(Perl_error_log,
728 "perl: warning: Setting locale failed for the categories:\n\t");
729 #ifdef USE_LOCALE_CTYPE
731 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
732 #endif /* USE_LOCALE_CTYPE */
733 #ifdef USE_LOCALE_COLLATE
735 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
736 #endif /* USE_LOCALE_COLLATE */
737 #ifdef USE_LOCALE_NUMERIC
739 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
740 #endif /* USE_LOCALE_NUMERIC */
741 PerlIO_printf(Perl_error_log, "\n");
745 PerlIO_printf(Perl_error_log,
746 "perl: warning: Please check that your locale settings:\n");
749 PerlIO_printf(Perl_error_log,
750 "\tLANGUAGE = %c%s%c,\n",
751 language ? '"' : '(',
752 language ? language : "unset",
753 language ? '"' : ')');
756 PerlIO_printf(Perl_error_log,
757 "\tLC_ALL = %c%s%c,\n",
759 lc_all ? lc_all : "unset",
764 for (e = environ; *e; e++) {
765 if (strnEQ(*e, "LC_", 3)
766 && strnNE(*e, "LC_ALL=", 7)
767 && (p = strchr(*e, '=')))
768 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
769 (int)(p - *e), *e, p + 1);
773 PerlIO_printf(Perl_error_log,
776 lang ? lang : "unset",
779 PerlIO_printf(Perl_error_log,
780 " are supported and installed on your system.\n");
785 if (setlocale(LC_ALL, "C")) {
787 PerlIO_printf(Perl_error_log,
788 "perl: warning: Falling back to the standard locale (\"C\").\n");
793 PerlIO_printf(Perl_error_log,
794 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
801 #ifdef USE_LOCALE_CTYPE
802 || !(curctype || setlocale(LC_CTYPE, "C"))
803 #endif /* USE_LOCALE_CTYPE */
804 #ifdef USE_LOCALE_COLLATE
805 || !(curcoll || setlocale(LC_COLLATE, "C"))
806 #endif /* USE_LOCALE_COLLATE */
807 #ifdef USE_LOCALE_NUMERIC
808 || !(curnum || setlocale(LC_NUMERIC, "C"))
809 #endif /* USE_LOCALE_NUMERIC */
813 PerlIO_printf(Perl_error_log,
814 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
818 #endif /* ! LC_ALL */
820 #ifdef USE_LOCALE_CTYPE
821 curctype = savepv(setlocale(LC_CTYPE, Nullch));
822 #endif /* USE_LOCALE_CTYPE */
823 #ifdef USE_LOCALE_COLLATE
824 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
825 #endif /* USE_LOCALE_COLLATE */
826 #ifdef USE_LOCALE_NUMERIC
827 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
828 #endif /* USE_LOCALE_NUMERIC */
832 #ifdef USE_LOCALE_CTYPE
834 #endif /* USE_LOCALE_CTYPE */
836 #ifdef USE_LOCALE_COLLATE
837 new_collate(curcoll);
838 #endif /* USE_LOCALE_COLLATE */
840 #ifdef USE_LOCALE_NUMERIC
842 #endif /* USE_LOCALE_NUMERIC */
845 #endif /* USE_LOCALE */
847 #ifdef USE_LOCALE_CTYPE
848 if (curctype != NULL)
850 #endif /* USE_LOCALE_CTYPE */
851 #ifdef USE_LOCALE_COLLATE
854 #endif /* USE_LOCALE_COLLATE */
855 #ifdef USE_LOCALE_NUMERIC
858 #endif /* USE_LOCALE_NUMERIC */
862 /* Backwards compatibility. */
864 Perl_init_i18nl14n(pTHX_ int printwarn)
866 return init_i18nl10n(printwarn);
869 #ifdef USE_LOCALE_COLLATE
872 * mem_collxfrm() is a bit like strxfrm() but with two important
873 * differences. First, it handles embedded NULs. Second, it allocates
874 * a bit more memory than needed for the transformed data itself.
875 * The real transformed data begins at offset sizeof(collationix).
876 * Please see sv_collxfrm() to see how this is used.
879 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
882 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
884 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
885 /* the +1 is for the terminating NUL. */
887 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
888 New(171, xbuf, xAlloc, char);
892 *(U32*)xbuf = PL_collation_ix;
893 xout = sizeof(PL_collation_ix);
894 for (xin = 0; xin < len; ) {
898 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
901 if (xused < xAlloc - xout)
903 xAlloc = (2 * xAlloc) + 1;
904 Renew(xbuf, xAlloc, char);
909 xin += strlen(s + xin) + 1;
912 /* Embedded NULs are understood but silently skipped
913 * because they make no sense in locale collation. */
917 *xlen = xout - sizeof(PL_collation_ix);
926 #endif /* USE_LOCALE_COLLATE */
928 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
930 /* As a space optimization, we do not compile tables for strings of length
931 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
932 special-cased in fbm_instr().
934 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
937 =for apidoc fbm_compile
939 Analyses the string in order to make fast searches on it using fbm_instr()
940 -- the Boyer-Moore algorithm.
946 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
955 if (flags & FBMcf_TAIL)
956 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
957 s = (U8*)SvPV_force(sv, len);
958 (void)SvUPGRADE(sv, SVt_PVBM);
959 if (len == 0) /* TAIL might be on on a zero-length string. */
969 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
970 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
971 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
972 memset((void*)table, mlen, 256);
973 table[-1] = (U8)flags;
975 sb = s - mlen + 1; /* first char (maybe) */
977 if (table[*s] == mlen)
982 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
985 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
986 for (i = 0; i < len; i++) {
987 if (PL_freq[s[i]] < frequency) {
989 frequency = PL_freq[s[i]];
992 BmRARE(sv) = s[rarest];
993 BmPREVIOUS(sv) = rarest;
994 BmUSEFUL(sv) = 100; /* Initial value */
995 if (flags & FBMcf_TAIL)
997 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
998 BmRARE(sv),BmPREVIOUS(sv)));
1001 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
1002 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1006 =for apidoc fbm_instr
1008 Returns the location of the SV in the string delimited by C<str> and
1009 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1010 does not have to be fbm_compiled, but the search will not be as fast
1017 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
1019 register unsigned char *s;
1021 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1022 register STRLEN littlelen = l;
1023 register I32 multiline = flags & FBMrf_MULTILINE;
1025 if (bigend - big < littlelen) {
1026 if ( SvTAIL(littlestr)
1027 && (bigend - big == littlelen - 1)
1029 || (*big == *little && memEQ(big, little, littlelen - 1))))
1034 if (littlelen <= 2) { /* Special-cased */
1036 if (littlelen == 1) {
1037 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1038 /* Know that bigend != big. */
1039 if (bigend[-1] == '\n')
1040 return (char *)(bigend - 1);
1041 return (char *) bigend;
1044 while (s < bigend) {
1049 if (SvTAIL(littlestr))
1050 return (char *) bigend;
1054 return (char*)big; /* Cannot be SvTAIL! */
1056 /* littlelen is 2 */
1057 if (SvTAIL(littlestr) && !multiline) {
1058 if (bigend[-1] == '\n' && bigend[-2] == *little)
1059 return (char*)bigend - 2;
1060 if (bigend[-1] == *little)
1061 return (char*)bigend - 1;
1065 /* This should be better than FBM if c1 == c2, and almost
1066 as good otherwise: maybe better since we do less indirection.
1067 And we save a lot of memory by caching no table. */
1068 register unsigned char c1 = little[0];
1069 register unsigned char c2 = little[1];
1074 while (s <= bigend) {
1077 return (char*)s - 1;
1084 goto check_1char_anchor;
1095 goto check_1char_anchor;
1098 while (s <= bigend) {
1101 return (char*)s - 1;
1103 goto check_1char_anchor;
1112 check_1char_anchor: /* One char and anchor! */
1113 if (SvTAIL(littlestr) && (*bigend == *little))
1114 return (char *)bigend; /* bigend is already decremented. */
1117 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1118 s = bigend - littlelen;
1119 if (s >= big && bigend[-1] == '\n' && *s == *little
1120 /* Automatically of length > 2 */
1121 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1123 return (char*)s; /* how sweet it is */
1126 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1128 return (char*)s + 1; /* how sweet it is */
1132 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1133 char *b = ninstr((char*)big,(char*)bigend,
1134 (char*)little, (char*)little + littlelen);
1136 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1137 /* Chop \n from littlestr: */
1138 s = bigend - littlelen + 1;
1140 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1149 { /* Do actual FBM. */
1150 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1151 register unsigned char *oldlittle;
1153 if (littlelen > bigend - big)
1155 --littlelen; /* Last char found by table lookup */
1157 s = big + littlelen;
1158 little += littlelen; /* last char */
1165 if ((tmp = table[*s])) {
1167 if (bigend - s > tmp) {
1173 if ((s += tmp) < bigend)
1178 else { /* less expensive than calling strncmp() */
1179 register unsigned char *olds = s;
1184 if (*--s == *--little)
1186 s = olds + 1; /* here we pay the price for failure */
1188 if (s < bigend) /* fake up continue to outer loop */
1196 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1197 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1198 return (char*)bigend - littlelen;
1203 /* start_shift, end_shift are positive quantities which give offsets
1204 of ends of some substring of bigstr.
1205 If `last' we want the last occurence.
1206 old_posp is the way of communication between consequent calls if
1207 the next call needs to find the .
1208 The initial *old_posp should be -1.
1210 Note that we take into account SvTAIL, so one can get extra
1211 optimizations if _ALL flag is set.
1214 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1215 if PL_multiline. In fact if !PL_multiline the autoritative answer
1216 is not supported yet. */
1219 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1222 register unsigned char *s, *x;
1223 register unsigned char *big;
1225 register I32 previous;
1227 register unsigned char *little;
1228 register I32 stop_pos;
1229 register unsigned char *littleend;
1233 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1234 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1236 if ( BmRARE(littlestr) == '\n'
1237 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1238 little = (unsigned char *)(SvPVX(littlestr));
1239 littleend = little + SvCUR(littlestr);
1246 little = (unsigned char *)(SvPVX(littlestr));
1247 littleend = little + SvCUR(littlestr);
1249 /* The value of pos we can start at: */
1250 previous = BmPREVIOUS(littlestr);
1251 big = (unsigned char *)(SvPVX(bigstr));
1252 /* The value of pos we can stop at: */
1253 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1254 if (previous + start_shift > stop_pos) {
1255 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1259 while (pos < previous + start_shift) {
1260 if (!(pos += PL_screamnext[pos]))
1265 if (pos >= stop_pos) break;
1266 if (big[pos-previous] != first)
1268 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1274 if (s == littleend) {
1276 if (!last) return (char *)(big+pos-previous);
1279 } while ( pos += PL_screamnext[pos] );
1280 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1281 #else /* !POINTERRIGOR */
1284 if (pos >= stop_pos) break;
1285 if (big[pos] != first)
1287 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1293 if (s == littleend) {
1295 if (!last) return (char *)(big+pos);
1298 } while ( pos += PL_screamnext[pos] );
1300 return (char *)(big+(*old_posp));
1301 #endif /* POINTERRIGOR */
1303 if (!SvTAIL(littlestr) || (end_shift > 0))
1305 /* Ignore the trailing "\n". This code is not microoptimized */
1306 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1307 stop_pos = littleend - little; /* Actual littlestr len */
1312 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1318 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1320 register U8 *a = (U8 *)s1;
1321 register U8 *b = (U8 *)s2;
1323 if (*a != *b && *a != PL_fold[*b])
1331 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1333 register U8 *a = (U8 *)s1;
1334 register U8 *b = (U8 *)s2;
1336 if (*a != *b && *a != PL_fold_locale[*b])
1343 /* copy a string to a safe spot */
1348 Copy a string to a safe spot. This does not use an SV.
1354 Perl_savepv(pTHX_ const char *sv)
1356 register char *newaddr;
1358 New(902,newaddr,strlen(sv)+1,char);
1359 (void)strcpy(newaddr,sv);
1363 /* same thing but with a known length */
1368 Copy a string to a safe spot. The C<len> indicates number of bytes to
1369 copy. This does not use an SV.
1375 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1377 register char *newaddr;
1379 New(903,newaddr,len+1,char);
1380 Copy(sv,newaddr,len,char); /* might not be null terminated */
1381 newaddr[len] = '\0'; /* is now */
1385 /* the SV for Perl_form() and mess() is not kept in an arena */
1395 return sv_2mortal(newSVpvn("",0));
1400 /* Create as PVMG now, to avoid any upgrading later */
1401 New(905, sv, 1, SV);
1402 Newz(905, any, 1, XPVMG);
1403 SvFLAGS(sv) = SVt_PVMG;
1404 SvANY(sv) = (void*)any;
1405 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1410 #if defined(PERL_IMPLICIT_CONTEXT)
1412 Perl_form_nocontext(const char* pat, ...)
1417 va_start(args, pat);
1418 retval = vform(pat, &args);
1422 #endif /* PERL_IMPLICIT_CONTEXT */
1425 Perl_form(pTHX_ const char* pat, ...)
1429 va_start(args, pat);
1430 retval = vform(pat, &args);
1436 Perl_vform(pTHX_ const char *pat, va_list *args)
1438 SV *sv = mess_alloc();
1439 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1443 #if defined(PERL_IMPLICIT_CONTEXT)
1445 Perl_mess_nocontext(const char *pat, ...)
1450 va_start(args, pat);
1451 retval = vmess(pat, &args);
1455 #endif /* PERL_IMPLICIT_CONTEXT */
1458 Perl_mess(pTHX_ const char *pat, ...)
1462 va_start(args, pat);
1463 retval = vmess(pat, &args);
1469 Perl_vmess(pTHX_ const char *pat, va_list *args)
1471 SV *sv = mess_alloc();
1472 static char dgd[] = " during global destruction.\n";
1474 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1475 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1477 if (CopLINE(PL_curcop))
1478 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1479 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1480 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1481 bool line_mode = (RsSIMPLE(PL_rs) &&
1482 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1483 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1484 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1485 line_mode ? "line" : "chunk",
1486 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1490 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1492 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1498 Perl_vdie(pTHX_ const char* pat, va_list *args)
1502 int was_in_eval = PL_in_eval;
1509 DEBUG_S(PerlIO_printf(Perl_debug_log,
1510 "%p: die: curstack = %p, mainstack = %p\n",
1511 thr, PL_curstack, PL_mainstack));
1514 msv = vmess(pat, args);
1515 if (PL_errors && SvCUR(PL_errors)) {
1516 sv_catsv(PL_errors, msv);
1517 message = SvPV(PL_errors, msglen);
1518 SvCUR_set(PL_errors, 0);
1521 message = SvPV(msv,msglen);
1528 DEBUG_S(PerlIO_printf(Perl_debug_log,
1529 "%p: die: message = %s\ndiehook = %p\n",
1530 thr, message, PL_diehook));
1532 /* sv_2cv might call Perl_croak() */
1533 SV *olddiehook = PL_diehook;
1535 SAVESPTR(PL_diehook);
1536 PL_diehook = Nullsv;
1537 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1539 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1546 msg = newSVpvn(message, msglen);
1554 PUSHSTACKi(PERLSI_DIEHOOK);
1558 call_sv((SV*)cv, G_DISCARD);
1564 PL_restartop = die_where(message, msglen);
1565 DEBUG_S(PerlIO_printf(Perl_debug_log,
1566 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1567 thr, PL_restartop, was_in_eval, PL_top_env));
1568 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1570 return PL_restartop;
1573 #if defined(PERL_IMPLICIT_CONTEXT)
1575 Perl_die_nocontext(const char* pat, ...)
1580 va_start(args, pat);
1581 o = vdie(pat, &args);
1585 #endif /* PERL_IMPLICIT_CONTEXT */
1588 Perl_die(pTHX_ const char* pat, ...)
1592 va_start(args, pat);
1593 o = vdie(pat, &args);
1599 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1610 msv = vmess(pat, args);
1611 if (PL_errors && SvCUR(PL_errors)) {
1612 sv_catsv(PL_errors, msv);
1613 message = SvPV(PL_errors, msglen);
1614 SvCUR_set(PL_errors, 0);
1617 message = SvPV(msv,msglen);
1624 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1625 PTR2UV(thr), message));
1628 /* sv_2cv might call Perl_croak() */
1629 SV *olddiehook = PL_diehook;
1631 SAVESPTR(PL_diehook);
1632 PL_diehook = Nullsv;
1633 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1635 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1642 msg = newSVpvn(message, msglen);
1650 PUSHSTACKi(PERLSI_DIEHOOK);
1654 call_sv((SV*)cv, G_DISCARD);
1660 PL_restartop = die_where(message, msglen);
1665 /* SFIO can really mess with your errno */
1668 PerlIO *serr = Perl_error_log;
1670 PerlIO_write(serr, message, msglen);
1671 (void)PerlIO_flush(serr);
1679 #if defined(PERL_IMPLICIT_CONTEXT)
1681 Perl_croak_nocontext(const char *pat, ...)
1685 va_start(args, pat);
1690 #endif /* PERL_IMPLICIT_CONTEXT */
1695 This is the XSUB-writer's interface to Perl's C<die> function.
1696 Normally use this function the same way you use the C C<printf>
1697 function. See C<warn>.
1699 If you want to throw an exception object, assign the object to
1700 C<$@> and then pass C<Nullch> to croak():
1702 errsv = get_sv("@", TRUE);
1703 sv_setsv(errsv, exception_object);
1710 Perl_croak(pTHX_ const char *pat, ...)
1713 va_start(args, pat);
1720 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1729 msv = vmess(pat, args);
1730 message = SvPV(msv, msglen);
1733 /* sv_2cv might call Perl_warn() */
1735 SV *oldwarnhook = PL_warnhook;
1737 SAVESPTR(PL_warnhook);
1738 PL_warnhook = Nullsv;
1739 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1741 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1747 msg = newSVpvn(message, msglen);
1751 PUSHSTACKi(PERLSI_WARNHOOK);
1755 call_sv((SV*)cv, G_DISCARD);
1762 PerlIO *serr = Perl_error_log;
1764 PerlIO_write(serr, message, msglen);
1766 DEBUG_L(*message == '!'
1767 ? (xstat(message[1]=='!'
1768 ? (message[2]=='!' ? 2 : 1)
1773 (void)PerlIO_flush(serr);
1777 #if defined(PERL_IMPLICIT_CONTEXT)
1779 Perl_warn_nocontext(const char *pat, ...)
1783 va_start(args, pat);
1787 #endif /* PERL_IMPLICIT_CONTEXT */
1792 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1793 function the same way you use the C C<printf> function. See
1800 Perl_warn(pTHX_ const char *pat, ...)
1803 va_start(args, pat);
1808 #if defined(PERL_IMPLICIT_CONTEXT)
1810 Perl_warner_nocontext(U32 err, const char *pat, ...)
1814 va_start(args, pat);
1815 vwarner(err, pat, &args);
1818 #endif /* PERL_IMPLICIT_CONTEXT */
1821 Perl_warner(pTHX_ U32 err, const char* pat,...)
1824 va_start(args, pat);
1825 vwarner(err, pat, &args);
1830 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1840 msv = vmess(pat, args);
1841 message = SvPV(msv, msglen);
1845 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1846 #endif /* USE_THREADS */
1848 /* sv_2cv might call Perl_croak() */
1849 SV *olddiehook = PL_diehook;
1851 SAVESPTR(PL_diehook);
1852 PL_diehook = Nullsv;
1853 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1855 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1861 msg = newSVpvn(message, msglen);
1865 PUSHSTACKi(PERLSI_DIEHOOK);
1869 call_sv((SV*)cv, G_DISCARD);
1875 PL_restartop = die_where(message, msglen);
1879 PerlIO *serr = Perl_error_log;
1880 PerlIO_write(serr, message, msglen);
1881 (void)PerlIO_flush(serr);
1888 /* sv_2cv might call Perl_warn() */
1890 SV *oldwarnhook = PL_warnhook;
1892 SAVESPTR(PL_warnhook);
1893 PL_warnhook = Nullsv;
1894 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1896 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1902 msg = newSVpvn(message, msglen);
1906 PUSHSTACKi(PERLSI_WARNHOOK);
1910 call_sv((SV*)cv, G_DISCARD);
1917 PerlIO *serr = Perl_error_log;
1918 PerlIO_write(serr, message, msglen);
1920 DEBUG_L(*message == '!'
1921 ? (xstat(message[1]=='!'
1922 ? (message[2]=='!' ? 2 : 1)
1927 (void)PerlIO_flush(serr);
1932 #ifdef USE_ENVIRON_ARRAY
1933 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
1934 #if !defined(WIN32) && !defined(__CYGWIN__)
1936 Perl_my_setenv(pTHX_ char *nam, char *val)
1938 #ifndef PERL_USE_SAFE_PUTENV
1939 /* most putenv()s leak, so we manipulate environ directly */
1940 register I32 i=setenv_getix(nam); /* where does it go? */
1942 if (environ == PL_origenviron) { /* need we copy environment? */
1948 for (max = i; environ[max]; max++) ;
1949 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1950 for (j=0; j<max; j++) { /* copy environment */
1951 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1952 strcpy(tmpenv[j], environ[j]);
1954 tmpenv[max] = Nullch;
1955 environ = tmpenv; /* tell exec where it is now */
1958 safesysfree(environ[i]);
1959 while (environ[i]) {
1960 environ[i] = environ[i+1];
1965 if (!environ[i]) { /* does not exist yet */
1966 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1967 environ[i+1] = Nullch; /* make sure it's null terminated */
1970 safesysfree(environ[i]);
1971 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1973 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1975 #else /* PERL_USE_SAFE_PUTENV */
1978 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1979 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1980 (void)putenv(new_env);
1981 #endif /* PERL_USE_SAFE_PUTENV */
1984 #else /* WIN32 || __CYGWIN__ */
1985 #if defined(__CYGWIN__)
1987 * Save environ of perl.exe, currently Cygwin links in separate environ's
1988 * for each exe/dll. Probably should be a member of impure_ptr.
1990 static char ***Perl_main_environ;
1993 Perl_my_setenv_init(char ***penviron)
1995 Perl_main_environ = penviron;
1999 Perl_my_setenv(pTHX_ char *nam, char *val)
2001 /* You can not directly manipulate the environ[] array because
2002 * the routines do some additional work that syncs the Cygwin
2003 * environment with the Windows environment.
2005 char *oldstr = environ[setenv_getix(nam)];
2011 safesysfree(oldstr);
2014 setenv(nam, val, 1);
2015 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
2016 if(oldstr && environ[setenv_getix(nam)] != oldstr)
2017 safesysfree(oldstr);
2019 #else /* if WIN32 */
2022 Perl_my_setenv(pTHX_ char *nam,char *val)
2025 #ifdef USE_WIN32_RTL_ENV
2027 register char *envstr;
2028 STRLEN namlen = strlen(nam);
2030 char *oldstr = environ[setenv_getix(nam)];
2032 /* putenv() has totally broken semantics in both the Borland
2033 * and Microsoft CRTLs. They either store the passed pointer in
2034 * the environment without making a copy, or make a copy and don't
2035 * free it. And on top of that, they dont free() old entries that
2036 * are being replaced/deleted. This means the caller must
2037 * free any old entries somehow, or we end up with a memory
2038 * leak every time my_setenv() is called. One might think
2039 * one could directly manipulate environ[], like the UNIX code
2040 * above, but direct changes to environ are not allowed when
2041 * calling putenv(), since the RTLs maintain an internal
2042 * *copy* of environ[]. Bad, bad, *bad* stink.
2053 vallen = strlen(val);
2054 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2055 (void)sprintf(envstr,"%s=%s",nam,val);
2056 (void)PerlEnv_putenv(envstr);
2058 safesysfree(oldstr);
2060 safesysfree(envstr); /* MSVCRT leaks without this */
2063 #else /* !USE_WIN32_RTL_ENV */
2065 register char *envstr;
2066 STRLEN len = strlen(nam) + 3;
2071 New(904, envstr, len, char);
2072 (void)sprintf(envstr,"%s=%s",nam,val);
2073 (void)PerlEnv_putenv(envstr);
2083 Perl_setenv_getix(pTHX_ char *nam)
2085 register I32 i, len = strlen(nam);
2087 for (i = 0; environ[i]; i++) {
2090 strnicmp(environ[i],nam,len) == 0
2092 strnEQ(environ[i],nam,len)
2094 && environ[i][len] == '=')
2095 break; /* strnEQ must come first to avoid */
2096 } /* potential SEGV's */
2100 #endif /* !VMS && !EPOC*/
2102 #ifdef UNLINK_ALL_VERSIONS
2104 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2108 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2113 /* this is a drop-in replacement for bcopy() */
2114 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2116 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2120 if (from - to >= 0) {
2128 *(--to) = *(--from);
2134 /* this is a drop-in replacement for memset() */
2137 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2147 /* this is a drop-in replacement for bzero() */
2148 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2150 Perl_my_bzero(register char *loc, register I32 len)
2160 /* this is a drop-in replacement for memcmp() */
2161 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2163 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2165 register U8 *a = (U8 *)s1;
2166 register U8 *b = (U8 *)s2;
2170 if (tmp = *a++ - *b++)
2175 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2179 #ifdef USE_CHAR_VSPRINTF
2184 vsprintf(char *dest, const char *pat, char *args)
2188 fakebuf._ptr = dest;
2189 fakebuf._cnt = 32767;
2193 fakebuf._flag = _IOWRT|_IOSTRG;
2194 _doprnt(pat, args, &fakebuf); /* what a kludge */
2195 (void)putc('\0', &fakebuf);
2196 #ifdef USE_CHAR_VSPRINTF
2199 return 0; /* perl doesn't use return value */
2203 #endif /* HAS_VPRINTF */
2206 #if BYTEORDER != 0x4321
2208 Perl_my_swap(pTHX_ short s)
2210 #if (BYTEORDER & 1) == 0
2213 result = ((s & 255) << 8) + ((s >> 8) & 255);
2221 Perl_my_htonl(pTHX_ long l)
2225 char c[sizeof(long)];
2228 #if BYTEORDER == 0x1234
2229 u.c[0] = (l >> 24) & 255;
2230 u.c[1] = (l >> 16) & 255;
2231 u.c[2] = (l >> 8) & 255;
2235 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2236 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2241 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2242 u.c[o & 0xf] = (l >> s) & 255;
2250 Perl_my_ntohl(pTHX_ long l)
2254 char c[sizeof(long)];
2257 #if BYTEORDER == 0x1234
2258 u.c[0] = (l >> 24) & 255;
2259 u.c[1] = (l >> 16) & 255;
2260 u.c[2] = (l >> 8) & 255;
2264 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2265 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2272 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2273 l |= (u.c[o & 0xf] & 255) << s;
2280 #endif /* BYTEORDER != 0x4321 */
2284 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2285 * If these functions are defined,
2286 * the BYTEORDER is neither 0x1234 nor 0x4321.
2287 * However, this is not assumed.
2291 #define HTOV(name,type) \
2293 name (register type n) \
2297 char c[sizeof(type)]; \
2301 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2302 u.c[i] = (n >> s) & 0xFF; \
2307 #define VTOH(name,type) \
2309 name (register type n) \
2313 char c[sizeof(type)]; \
2319 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2320 n += (u.c[i] & 0xFF) << s; \
2325 #if defined(HAS_HTOVS) && !defined(htovs)
2328 #if defined(HAS_HTOVL) && !defined(htovl)
2331 #if defined(HAS_VTOHS) && !defined(vtohs)
2334 #if defined(HAS_VTOHL) && !defined(vtohl)
2338 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2339 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2341 Perl_my_popen(pTHX_ char *cmd, char *mode)
2344 register I32 This, that;
2347 I32 doexec = strNE(cmd,"-");
2351 PERL_FLUSHALL_FOR_CHILD;
2354 return my_syspopen(aTHX_ cmd,mode);
2357 This = (*mode == 'w');
2359 if (doexec && PL_tainting) {
2361 taint_proper("Insecure %s%s", "EXEC");
2363 if (PerlProc_pipe(p) < 0)
2365 if (doexec && PerlProc_pipe(pp) >= 0)
2367 while ((pid = (doexec?vfork():fork())) < 0) {
2368 if (errno != EAGAIN) {
2369 PerlLIO_close(p[This]);
2371 PerlLIO_close(pp[0]);
2372 PerlLIO_close(pp[1]);
2375 Perl_croak(aTHX_ "Can't fork");
2387 PerlLIO_close(p[THAT]);
2389 PerlLIO_close(pp[0]);
2390 #if defined(HAS_FCNTL) && defined(F_SETFD)
2391 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2394 if (p[THIS] != (*mode == 'r')) {
2395 PerlLIO_dup2(p[THIS], *mode == 'r');
2396 PerlLIO_close(p[THIS]);
2400 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2406 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2410 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2413 #endif /* defined OS2 */
2415 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2416 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2418 hv_clear(PL_pidstatus); /* we have no children */
2423 do_execfree(); /* free any memory malloced by child on vfork */
2424 PerlLIO_close(p[that]);
2426 PerlLIO_close(pp[1]);
2427 if (p[that] < p[This]) {
2428 PerlLIO_dup2(p[This], p[that]);
2429 PerlLIO_close(p[This]);
2433 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2435 (void)SvUPGRADE(sv,SVt_IV);
2437 PL_forkprocess = pid;
2438 if (did_pipes && pid > 0) {
2442 while (n < sizeof(int)) {
2443 n1 = PerlLIO_read(pp[0],
2444 (void*)(((char*)&errkid)+n),
2450 PerlLIO_close(pp[0]);
2452 if (n) { /* Error */
2453 if (n != sizeof(int))
2454 Perl_croak(aTHX_ "panic: kid popen errno read");
2455 errno = errkid; /* Propagate errno from kid */
2460 PerlLIO_close(pp[0]);
2461 return PerlIO_fdopen(p[This], mode);
2464 #if defined(atarist) || defined(DJGPP)
2467 Perl_my_popen(pTHX_ char *cmd, char *mode)
2469 /* Needs work for PerlIO ! */
2470 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2471 PERL_FLUSHALL_FOR_CHILD;
2472 return popen(PerlIO_exportFILE(cmd, 0), mode);
2476 #endif /* !DOSISH */
2480 Perl_dump_fds(pTHX_ char *s)
2483 struct stat tmpstatbuf;
2485 PerlIO_printf(Perl_debug_log,"%s", s);
2486 for (fd = 0; fd < 32; fd++) {
2487 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2488 PerlIO_printf(Perl_debug_log," %d",fd);
2490 PerlIO_printf(Perl_debug_log,"\n");
2492 #endif /* DUMP_FDS */
2496 dup2(int oldfd, int newfd)
2498 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2501 PerlLIO_close(newfd);
2502 return fcntl(oldfd, F_DUPFD, newfd);
2504 #define DUP2_MAX_FDS 256
2505 int fdtmp[DUP2_MAX_FDS];
2511 PerlLIO_close(newfd);
2512 /* good enough for low fd's... */
2513 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2514 if (fdx >= DUP2_MAX_FDS) {
2522 PerlLIO_close(fdtmp[--fdx]);
2529 #ifdef HAS_SIGACTION
2532 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2534 struct sigaction act, oact;
2536 act.sa_handler = handler;
2537 sigemptyset(&act.sa_mask);
2540 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2543 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2544 act.sa_flags |= SA_NOCLDWAIT;
2546 if (sigaction(signo, &act, &oact) == -1)
2549 return oact.sa_handler;
2553 Perl_rsignal_state(pTHX_ int signo)
2555 struct sigaction oact;
2557 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2560 return oact.sa_handler;
2564 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2566 struct sigaction act;
2568 act.sa_handler = handler;
2569 sigemptyset(&act.sa_mask);
2572 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2575 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2576 act.sa_flags |= SA_NOCLDWAIT;
2578 return sigaction(signo, &act, save);
2582 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2584 return sigaction(signo, save, (struct sigaction *)NULL);
2587 #else /* !HAS_SIGACTION */
2590 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2592 return PerlProc_signal(signo, handler);
2595 static int sig_trapped;
2605 Perl_rsignal_state(pTHX_ int signo)
2607 Sighandler_t oldsig;
2610 oldsig = PerlProc_signal(signo, sig_trap);
2611 PerlProc_signal(signo, oldsig);
2613 PerlProc_kill(PerlProc_getpid(), signo);
2618 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2620 *save = PerlProc_signal(signo, handler);
2621 return (*save == SIG_ERR) ? -1 : 0;
2625 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2627 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2630 #endif /* !HAS_SIGACTION */
2632 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2633 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2635 Perl_my_pclose(pTHX_ PerlIO *ptr)
2637 Sigsave_t hstat, istat, qstat;
2645 int saved_vaxc_errno;
2648 int saved_win32_errno;
2652 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2656 *svp = &PL_sv_undef;
2658 if (pid == -1) { /* Opened by popen. */
2659 return my_syspclose(ptr);
2662 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2663 saved_errno = errno;
2665 saved_vaxc_errno = vaxc$errno;
2668 saved_win32_errno = GetLastError();
2672 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2674 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2675 rsignal_save(SIGINT, SIG_IGN, &istat);
2676 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2678 pid2 = wait4pid(pid, &status, 0);
2679 } while (pid2 == -1 && errno == EINTR);
2680 rsignal_restore(SIGHUP, &hstat);
2681 rsignal_restore(SIGINT, &istat);
2682 rsignal_restore(SIGQUIT, &qstat);
2684 SETERRNO(saved_errno, saved_vaxc_errno);
2687 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2689 #endif /* !DOSISH */
2691 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2693 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2697 char spid[TYPE_CHARS(int)];
2701 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2703 sprintf(spid, "%"IVdf, (IV)pid);
2704 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2705 if (svp && *svp != &PL_sv_undef) {
2706 *statusp = SvIVX(*svp);
2707 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2714 hv_iterinit(PL_pidstatus);
2715 if ((entry = hv_iternext(PL_pidstatus))) {
2716 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2717 sv = hv_iterval(PL_pidstatus,entry);
2718 *statusp = SvIVX(sv);
2719 sprintf(spid, "%"IVdf, (IV)pid);
2720 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2726 # ifdef HAS_WAITPID_RUNTIME
2727 if (!HAS_WAITPID_RUNTIME)
2730 return PerlProc_waitpid(pid,statusp,flags);
2732 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2733 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2735 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2740 Perl_croak(aTHX_ "Can't do waitpid with flags");
2742 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2743 pidgone(result,*statusp);
2751 #endif /* !DOSISH || OS2 || WIN32 */
2755 Perl_pidgone(pTHX_ Pid_t pid, int status)
2758 char spid[TYPE_CHARS(int)];
2760 sprintf(spid, "%"IVdf, (IV)pid);
2761 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2762 (void)SvUPGRADE(sv,SVt_IV);
2767 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2770 int /* Cannot prototype with I32
2772 my_syspclose(PerlIO *ptr)
2775 Perl_my_pclose(pTHX_ PerlIO *ptr)
2778 /* Needs work for PerlIO ! */
2779 FILE *f = PerlIO_findFILE(ptr);
2780 I32 result = pclose(f);
2782 result = (result << 8) & 0xff00;
2784 PerlIO_releaseFILE(ptr,f);
2790 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2793 register const char *frombase = from;
2796 register const char c = *from;
2801 while (count-- > 0) {
2802 for (todo = len; todo > 0; todo--) {
2810 Perl_cast_ulong(pTHX_ NV f)
2815 # define BIGDOUBLE 2147483648.0
2817 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2820 return (unsigned long)f;
2822 return (unsigned long)along;
2826 /* Unfortunately, on some systems the cast_uv() function doesn't
2827 work with the system-supplied definition of ULONG_MAX. The
2828 comparison (f >= ULONG_MAX) always comes out true. It must be a
2829 problem with the compiler constant folding.
2831 In any case, this workaround should be fine on any two's complement
2832 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2834 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2837 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2839 -- Kenneth Albanowski <kjahds@kjahds.com>
2843 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2847 Perl_cast_i32(pTHX_ NV f)
2850 return (I32) I32_MAX;
2852 return (I32) I32_MIN;
2857 Perl_cast_iv(pTHX_ NV f)
2862 if (f >= (NV)UV_MAX)
2873 Perl_cast_uv(pTHX_ NV f)
2876 return (UV) MY_UV_MAX;
2890 Perl_same_dirent(pTHX_ char *a, char *b)
2892 char *fa = strrchr(a,'/');
2893 char *fb = strrchr(b,'/');
2894 struct stat tmpstatbuf1;
2895 struct stat tmpstatbuf2;
2896 SV *tmpsv = sv_newmortal();
2909 sv_setpv(tmpsv, ".");
2911 sv_setpvn(tmpsv, a, fa - a);
2912 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2915 sv_setpv(tmpsv, ".");
2917 sv_setpvn(tmpsv, b, fb - b);
2918 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2920 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2921 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2923 #endif /* !HAS_RENAME */
2926 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2928 register char *s = start;
2929 register NV rnv = 0.0;
2930 register UV ruv = 0;
2931 register bool seenb = FALSE;
2932 register bool overflowed = FALSE;
2934 for (; len-- && *s; s++) {
2935 if (!(*s == '0' || *s == '1')) {
2936 if (*s == '_' && len && *retlen
2937 && (s[1] == '0' || s[1] == '1'))
2942 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2943 /* Disallow 0bbb0b0bbb... */
2949 if (ckWARN(WARN_DIGIT))
2950 Perl_warner(aTHX_ WARN_DIGIT,
2951 "Illegal binary digit '%c' ignored", *s);
2956 register UV xuv = ruv << 1;
2958 if ((xuv >> 1) != ruv) {
2962 if (ckWARN_d(WARN_OVERFLOW))
2963 Perl_warner(aTHX_ WARN_OVERFLOW,
2964 "Integer overflow in binary number");
2967 ruv = xuv | (*s - '0');
2971 /* If an NV has not enough bits in its mantissa to
2972 * represent an UV this summing of small low-order numbers
2973 * is a waste of time (because the NV cannot preserve
2974 * the low-order bits anyway): we could just remember when
2975 * did we overflow and in the end just multiply rnv by the
2982 if ( ( overflowed && rnv > 4294967295.0)
2984 || (!overflowed && ruv > 0xffffffff )
2988 if (ckWARN(WARN_PORTABLE))
2989 Perl_warner(aTHX_ WARN_PORTABLE,
2990 "Binary number > 0b11111111111111111111111111111111 non-portable");
2992 *retlen = s - start;
2997 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2999 register char *s = start;
3000 register NV rnv = 0.0;
3001 register UV ruv = 0;
3002 register bool overflowed = FALSE;
3004 for (; len-- && *s; s++) {
3005 if (!(*s >= '0' && *s <= '7')) {
3006 if (*s == '_' && len && *retlen
3007 && (s[1] >= '0' && s[1] <= '7'))
3013 /* Allow \octal to work the DWIM way (that is, stop scanning
3014 * as soon as non-octal characters are seen, complain only iff
3015 * someone seems to want to use the digits eight and nine). */
3016 if (*s == '8' || *s == '9') {
3018 if (ckWARN(WARN_DIGIT))
3019 Perl_warner(aTHX_ WARN_DIGIT,
3020 "Illegal octal digit '%c' ignored", *s);
3026 register UV xuv = ruv << 3;
3028 if ((xuv >> 3) != ruv) {
3032 if (ckWARN_d(WARN_OVERFLOW))
3033 Perl_warner(aTHX_ WARN_OVERFLOW,
3034 "Integer overflow in octal number");
3037 ruv = xuv | (*s - '0');
3041 /* If an NV has not enough bits in its mantissa to
3042 * represent an UV this summing of small low-order numbers
3043 * is a waste of time (because the NV cannot preserve
3044 * the low-order bits anyway): we could just remember when
3045 * did we overflow and in the end just multiply rnv by the
3046 * right amount of 8-tuples. */
3047 rnv += (NV)(*s - '0');
3052 if ( ( overflowed && rnv > 4294967295.0)
3054 || (!overflowed && ruv > 0xffffffff )
3058 if (ckWARN(WARN_PORTABLE))
3059 Perl_warner(aTHX_ WARN_PORTABLE,
3060 "Octal number > 037777777777 non-portable");
3062 *retlen = s - start;
3067 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3069 register char *s = start;
3070 register NV rnv = 0.0;
3071 register UV ruv = 0;
3072 register bool seenx = FALSE;
3073 register bool overflowed = FALSE;
3076 for (; len-- && *s; s++) {
3077 hexdigit = strchr((char *) PL_hexdigit, *s);
3079 if (*s == '_' && len && *retlen && s[1]
3080 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3085 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3086 /* Disallow 0xxx0x0xxx... */
3092 if (ckWARN(WARN_DIGIT))
3093 Perl_warner(aTHX_ WARN_DIGIT,
3094 "Illegal hexadecimal digit '%c' ignored", *s);
3099 register UV xuv = ruv << 4;
3101 if ((xuv >> 4) != ruv) {
3105 if (ckWARN_d(WARN_OVERFLOW))
3106 Perl_warner(aTHX_ WARN_OVERFLOW,
3107 "Integer overflow in hexadecimal number");
3110 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3114 /* If an NV has not enough bits in its mantissa to
3115 * represent an UV this summing of small low-order numbers
3116 * is a waste of time (because the NV cannot preserve
3117 * the low-order bits anyway): we could just remember when
3118 * did we overflow and in the end just multiply rnv by the
3119 * right amount of 16-tuples. */
3120 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3125 if ( ( overflowed && rnv > 4294967295.0)
3127 || (!overflowed && ruv > 0xffffffff )
3131 if (ckWARN(WARN_PORTABLE))
3132 Perl_warner(aTHX_ WARN_PORTABLE,
3133 "Hexadecimal number > 0xffffffff non-portable");
3135 *retlen = s - start;
3140 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3143 char *xfound = Nullch;
3144 char *xfailed = Nullch;
3145 char tmpbuf[MAXPATHLEN];
3149 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3150 # define SEARCH_EXTS ".bat", ".cmd", NULL
3151 # define MAX_EXT_LEN 4
3154 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3155 # define MAX_EXT_LEN 4
3158 # define SEARCH_EXTS ".pl", ".com", NULL
3159 # define MAX_EXT_LEN 4
3161 /* additional extensions to try in each dir if scriptname not found */
3163 char *exts[] = { SEARCH_EXTS };
3164 char **ext = search_ext ? search_ext : exts;
3165 int extidx = 0, i = 0;
3166 char *curext = Nullch;
3168 # define MAX_EXT_LEN 0
3172 * If dosearch is true and if scriptname does not contain path
3173 * delimiters, search the PATH for scriptname.
3175 * If SEARCH_EXTS is also defined, will look for each
3176 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3177 * while searching the PATH.
3179 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3180 * proceeds as follows:
3181 * If DOSISH or VMSISH:
3182 * + look for ./scriptname{,.foo,.bar}
3183 * + search the PATH for scriptname{,.foo,.bar}
3186 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3187 * this will not look in '.' if it's not in the PATH)
3192 # ifdef ALWAYS_DEFTYPES
3193 len = strlen(scriptname);
3194 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3195 int hasdir, idx = 0, deftypes = 1;
3198 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3201 int hasdir, idx = 0, deftypes = 1;
3204 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3206 /* The first time through, just add SEARCH_EXTS to whatever we
3207 * already have, so we can check for default file types. */
3209 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3215 if ((strlen(tmpbuf) + strlen(scriptname)
3216 + MAX_EXT_LEN) >= sizeof tmpbuf)
3217 continue; /* don't search dir with too-long name */
3218 strcat(tmpbuf, scriptname);
3222 if (strEQ(scriptname, "-"))
3224 if (dosearch) { /* Look in '.' first. */
3225 char *cur = scriptname;
3227 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3229 if (strEQ(ext[i++],curext)) {
3230 extidx = -1; /* already has an ext */
3235 DEBUG_p(PerlIO_printf(Perl_debug_log,
3236 "Looking for %s\n",cur));
3237 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3238 && !S_ISDIR(PL_statbuf.st_mode)) {
3246 if (cur == scriptname) {
3247 len = strlen(scriptname);
3248 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3250 cur = strcpy(tmpbuf, scriptname);
3252 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3253 && strcpy(tmpbuf+len, ext[extidx++]));
3258 #ifdef MACOS_TRADITIONAL
3259 if (dosearch && !strchr(scriptname, ':') &&
3260 (s = PerlEnv_getenv("Commands")))
3262 if (dosearch && !strchr(scriptname, '/')
3264 && !strchr(scriptname, '\\')
3266 && (s = PerlEnv_getenv("PATH")))
3271 PL_bufend = s + strlen(s);
3272 while (s < PL_bufend) {
3273 #ifdef MACOS_TRADITIONAL
3274 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3278 #if defined(atarist) || defined(DOSISH)
3283 && *s != ';'; len++, s++) {
3284 if (len < sizeof tmpbuf)
3287 if (len < sizeof tmpbuf)
3289 #else /* ! (atarist || DOSISH) */
3290 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3293 #endif /* ! (atarist || DOSISH) */
3294 #endif /* MACOS_TRADITIONAL */
3297 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3298 continue; /* don't search dir with too-long name */
3299 #ifdef MACOS_TRADITIONAL
3300 if (len && tmpbuf[len - 1] != ':')
3301 tmpbuf[len++] = ':';
3304 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3305 && tmpbuf[len - 1] != '/'
3306 && tmpbuf[len - 1] != '\\'
3309 tmpbuf[len++] = '/';
3310 if (len == 2 && tmpbuf[0] == '.')
3313 (void)strcpy(tmpbuf + len, scriptname);
3317 len = strlen(tmpbuf);
3318 if (extidx > 0) /* reset after previous loop */
3322 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3323 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3324 if (S_ISDIR(PL_statbuf.st_mode)) {
3328 } while ( retval < 0 /* not there */
3329 && extidx>=0 && ext[extidx] /* try an extension? */
3330 && strcpy(tmpbuf+len, ext[extidx++])
3335 if (S_ISREG(PL_statbuf.st_mode)
3336 && cando(S_IRUSR,TRUE,&PL_statbuf)
3337 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3338 && cando(S_IXUSR,TRUE,&PL_statbuf)
3342 xfound = tmpbuf; /* bingo! */
3346 xfailed = savepv(tmpbuf);
3349 if (!xfound && !seen_dot && !xfailed &&
3350 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3351 || S_ISDIR(PL_statbuf.st_mode)))
3353 seen_dot = 1; /* Disable message. */
3355 if (flags & 1) { /* do or die? */
3356 Perl_croak(aTHX_ "Can't %s %s%s%s",
3357 (xfailed ? "execute" : "find"),
3358 (xfailed ? xfailed : scriptname),
3359 (xfailed ? "" : " on PATH"),
3360 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3362 scriptname = Nullch;
3366 scriptname = xfound;
3368 return (scriptname ? savepv(scriptname) : Nullch);
3371 #ifndef PERL_GET_CONTEXT_DEFINED
3374 Perl_get_context(void)
3376 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3377 # ifdef OLD_PTHREADS_API
3379 if (pthread_getspecific(PL_thr_key, &t))
3380 Perl_croak_nocontext("panic: pthread_getspecific");
3383 # ifdef I_MACH_CTHREADS
3384 return (void*)cthread_data(cthread_self());
3386 return (void*)pthread_getspecific(PL_thr_key);
3395 Perl_set_context(void *t)
3397 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3398 # ifdef I_MACH_CTHREADS
3399 cthread_set_data(cthread_self(), t);
3401 if (pthread_setspecific(PL_thr_key, t))
3402 Perl_croak_nocontext("panic: pthread_setspecific");
3407 #endif /* !PERL_GET_CONTEXT_DEFINED */
3412 /* Very simplistic scheduler for now */
3416 thr = thr->i.next_run;
3420 Perl_cond_init(pTHX_ perl_cond *cp)
3426 Perl_cond_signal(pTHX_ perl_cond *cp)
3429 perl_cond cond = *cp;
3434 /* Insert t in the runnable queue just ahead of us */
3435 t->i.next_run = thr->i.next_run;
3436 thr->i.next_run->i.prev_run = t;
3437 t->i.prev_run = thr;
3438 thr->i.next_run = t;
3439 thr->i.wait_queue = 0;
3440 /* Remove from the wait queue */
3446 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3449 perl_cond cond, cond_next;
3451 for (cond = *cp; cond; cond = cond_next) {
3453 /* Insert t in the runnable queue just ahead of us */
3454 t->i.next_run = thr->i.next_run;
3455 thr->i.next_run->i.prev_run = t;
3456 t->i.prev_run = thr;
3457 thr->i.next_run = t;
3458 thr->i.wait_queue = 0;
3459 /* Remove from the wait queue */
3460 cond_next = cond->next;
3467 Perl_cond_wait(pTHX_ perl_cond *cp)
3471 if (thr->i.next_run == thr)
3472 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3474 New(666, cond, 1, struct perl_wait_queue);
3478 thr->i.wait_queue = cond;
3479 /* Remove ourselves from runnable queue */
3480 thr->i.next_run->i.prev_run = thr->i.prev_run;
3481 thr->i.prev_run->i.next_run = thr->i.next_run;
3483 #endif /* FAKE_THREADS */
3486 Perl_condpair_magic(pTHX_ SV *sv)
3490 SvUPGRADE(sv, SVt_PVMG);
3491 mg = mg_find(sv, 'm');
3495 New(53, cp, 1, condpair_t);
3496 MUTEX_INIT(&cp->mutex);
3497 COND_INIT(&cp->owner_cond);
3498 COND_INIT(&cp->cond);
3500 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3501 mg = mg_find(sv, 'm');
3503 /* someone else beat us to initialising it */
3504 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3505 MUTEX_DESTROY(&cp->mutex);
3506 COND_DESTROY(&cp->owner_cond);
3507 COND_DESTROY(&cp->cond);
3511 sv_magic(sv, Nullsv, 'm', 0, 0);
3513 mg->mg_ptr = (char *)cp;
3514 mg->mg_len = sizeof(cp);
3515 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3516 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3517 "%p: condpair_magic %p\n", thr, sv));)
3524 Perl_sv_lock(pTHX_ SV *osv)
3534 mg = condpair_magic(sv);
3535 MUTEX_LOCK(MgMUTEXP(mg));
3536 if (MgOWNER(mg) == thr)
3537 MUTEX_UNLOCK(MgMUTEXP(mg));
3540 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3542 DEBUG_S(PerlIO_printf(Perl_debug_log,
3543 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3544 PTR2UV(thr), PTR2UV(sv));)
3545 MUTEX_UNLOCK(MgMUTEXP(mg));
3546 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3548 UNLOCK_SV_LOCK_MUTEX;
3553 * Make a new perl thread structure using t as a prototype. Some of the
3554 * fields for the new thread are copied from the prototype thread, t,
3555 * so t should not be running in perl at the time this function is
3556 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3557 * thread calling new_struct_thread) clearly satisfies this constraint.
3559 struct perl_thread *
3560 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3562 #if !defined(PERL_IMPLICIT_CONTEXT)
3563 struct perl_thread *thr;
3569 sv = newSVpvn("", 0);
3570 SvGROW(sv, sizeof(struct perl_thread) + 1);
3571 SvCUR_set(sv, sizeof(struct perl_thread));
3572 thr = (Thread) SvPVX(sv);
3574 memset(thr, 0xab, sizeof(struct perl_thread));
3581 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3582 PL_efloatbuf = (char*)NULL;
3585 Zero(thr, 1, struct perl_thread);
3591 PL_curcop = &PL_compiling;
3592 thr->interp = t->interp;
3593 thr->cvcache = newHV();
3594 thr->threadsv = newAV();
3595 thr->specific = newAV();
3596 thr->errsv = newSVpvn("", 0);
3597 thr->flags = THRf_R_JOINABLE;
3598 MUTEX_INIT(&thr->mutex);
3602 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
3605 PL_statname = NEWSV(66,0);
3606 PL_errors = newSVpvn("", 0);
3608 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3609 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3610 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3611 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3612 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3614 PL_reginterp_cnt = 0;
3615 PL_lastscream = Nullsv;
3618 PL_reg_start_tmp = 0;
3619 PL_reg_start_tmpl = 0;
3620 PL_reg_poscache = Nullch;
3622 /* parent thread's data needs to be locked while we make copy */
3623 MUTEX_LOCK(&t->mutex);
3625 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3626 PL_protect = t->Tprotect;
3629 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3630 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3631 PL_curstash = t->Tcurstash; /* always be set to main? */
3633 PL_tainted = t->Ttainted;
3634 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3635 PL_nrs = newSVsv(t->Tnrs);
3636 PL_rs = SvREFCNT_inc(PL_nrs);
3637 PL_last_in_gv = Nullgv;
3638 PL_ofslen = t->Tofslen;
3639 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3640 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3641 PL_chopset = t->Tchopset;
3642 PL_bodytarget = newSVsv(t->Tbodytarget);
3643 PL_toptarget = newSVsv(t->Ttoptarget);
3644 if (t->Tformtarget == t->Ttoptarget)
3645 PL_formtarget = PL_toptarget;
3647 PL_formtarget = PL_bodytarget;
3649 /* Initialise all per-thread SVs that the template thread used */
3650 svp = AvARRAY(t->threadsv);
3651 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3652 if (*svp && *svp != &PL_sv_undef) {
3653 SV *sv = newSVsv(*svp);
3654 av_store(thr->threadsv, i, sv);
3655 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3656 DEBUG_S(PerlIO_printf(Perl_debug_log,
3657 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3661 thr->threadsvp = AvARRAY(thr->threadsv);
3663 MUTEX_LOCK(&PL_threads_mutex);
3665 thr->tid = ++PL_threadnum;
3666 thr->next = t->next;
3669 thr->next->prev = thr;
3670 MUTEX_UNLOCK(&PL_threads_mutex);
3672 /* done copying parent's state */
3673 MUTEX_UNLOCK(&t->mutex);
3675 #ifdef HAVE_THREAD_INTERN
3676 Perl_init_thread_intern(thr);
3677 #endif /* HAVE_THREAD_INTERN */
3680 #endif /* USE_THREADS */
3682 #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
3684 * This hack is to force load of "huge" support from libm.a
3685 * So it is in perl for (say) POSIX to use.
3686 * Needed for SunOS with Sun's 'acc' for example.
3691 # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3698 #ifdef PERL_GLOBAL_STRUCT
3707 Perl_get_op_names(pTHX)
3713 Perl_get_op_descs(pTHX)
3719 Perl_get_no_modify(pTHX)
3721 return (char*)PL_no_modify;
3725 Perl_get_opargs(pTHX)
3731 Perl_get_ppaddr(pTHX)
3736 #ifndef HAS_GETENV_LEN
3738 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3740 char *env_trans = PerlEnv_getenv(env_elem);
3742 *len = strlen(env_trans);
3749 Perl_get_vtbl(pTHX_ int vtbl_id)
3751 MGVTBL* result = Null(MGVTBL*);
3755 result = &PL_vtbl_sv;
3758 result = &PL_vtbl_env;
3760 case want_vtbl_envelem:
3761 result = &PL_vtbl_envelem;
3764 result = &PL_vtbl_sig;
3766 case want_vtbl_sigelem:
3767 result = &PL_vtbl_sigelem;
3769 case want_vtbl_pack:
3770 result = &PL_vtbl_pack;
3772 case want_vtbl_packelem:
3773 result = &PL_vtbl_packelem;
3775 case want_vtbl_dbline:
3776 result = &PL_vtbl_dbline;
3779 result = &PL_vtbl_isa;
3781 case want_vtbl_isaelem:
3782 result = &PL_vtbl_isaelem;
3784 case want_vtbl_arylen:
3785 result = &PL_vtbl_arylen;
3787 case want_vtbl_glob:
3788 result = &PL_vtbl_glob;
3790 case want_vtbl_mglob:
3791 result = &PL_vtbl_mglob;
3793 case want_vtbl_nkeys:
3794 result = &PL_vtbl_nkeys;
3796 case want_vtbl_taint:
3797 result = &PL_vtbl_taint;
3799 case want_vtbl_substr:
3800 result = &PL_vtbl_substr;
3803 result = &PL_vtbl_vec;
3806 result = &PL_vtbl_pos;
3809 result = &PL_vtbl_bm;
3812 result = &PL_vtbl_fm;
3814 case want_vtbl_uvar:
3815 result = &PL_vtbl_uvar;
3818 case want_vtbl_mutex:
3819 result = &PL_vtbl_mutex;
3822 case want_vtbl_defelem:
3823 result = &PL_vtbl_defelem;
3825 case want_vtbl_regexp:
3826 result = &PL_vtbl_regexp;
3828 case want_vtbl_regdata:
3829 result = &PL_vtbl_regdata;
3831 case want_vtbl_regdatum:
3832 result = &PL_vtbl_regdatum;
3834 #ifdef USE_LOCALE_COLLATE
3835 case want_vtbl_collxfrm:
3836 result = &PL_vtbl_collxfrm;
3839 case want_vtbl_amagic:
3840 result = &PL_vtbl_amagic;
3842 case want_vtbl_amagicelem:
3843 result = &PL_vtbl_amagicelem;
3845 case want_vtbl_backref:
3846 result = &PL_vtbl_backref;
3853 Perl_my_fflush_all(pTHX)
3856 return PerlIO_flush(NULL);
3859 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3860 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3861 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3863 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3864 open_max = sysconf(_SC_OPEN_MAX);
3867 open_max = FOPEN_MAX;
3870 open_max = OPEN_MAX;
3881 for (i = 0; i < open_max; i++)
3882 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3883 STDIO_STREAM_ARRAY[i]._file < open_max &&
3884 STDIO_STREAM_ARRAY[i]._flag)
3885 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3889 SETERRNO(EBADF,RMS$_IFI);
3895 Perl_my_atof(pTHX_ const char* s)
3898 #ifdef USE_LOCALE_NUMERIC
3899 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3903 SET_NUMERIC_STANDARD();
3905 SET_NUMERIC_LOCAL();
3906 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3918 Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3923 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3924 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
3926 char *pars = OP_IS_FILETEST(op) ? "" : "()";
3927 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
3928 "socket" : "filehandle";
3931 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
3933 warn_type = WARN_CLOSED;
3937 warn_type = WARN_UNOPENED;
3940 if (gv && isGV(gv)) {
3941 SV *sv = sv_newmortal();
3942 gv_efullname4(sv, gv, Nullch, FALSE);
3946 if (name && *name) {
3947 Perl_warner(aTHX_ warn_type,
3948 "%s%s on %s %s %s", func, pars, vile, type, name);
3949 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3950 Perl_warner(aTHX_ warn_type,
3951 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3955 Perl_warner(aTHX_ warn_type,
3956 "%s%s on %s %s", func, pars, vile, type);
3957 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3958 Perl_warner(aTHX_ warn_type,
3959 "\t(Are you trying to call %s%s on dirhandle?)\n",