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
20 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
25 # define SIG_ERR ((Sighandler_t) -1)
29 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
38 /* Put this after #includes because fork and vfork prototypes may
46 # include <sys/wait.h>
57 long xcount[MAXXCOUNT];
58 long lastxcount[MAXXCOUNT];
59 long xycount[MAXXCOUNT][MAXYCOUNT];
60 long lastxycount[MAXXCOUNT][MAXYCOUNT];
64 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
65 # define FD_CLOEXEC 1 /* NeXT needs this */
68 /* paranoid version of system's malloc() */
70 /* NOTE: Do not call the next three routines directly. Use the macros
71 * in handy.h, so that we can easily redefine everything to do tracking of
72 * allocated hunks back to the original New to track down any memory leaks.
73 * XXX This advice seems to be widely ignored :-( --AD August 1996.
77 Perl_safesysmalloc(MEM_SIZE size)
83 PerlIO_printf(Perl_error_log,
84 "Allocation too large: %lx\n", size) FLUSH;
87 #endif /* HAS_64K_LIMIT */
90 Perl_croak_nocontext("panic: malloc");
92 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
93 PERL_ALLOC_CHECK(ptr);
94 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
100 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
107 /* paranoid version of system's realloc() */
110 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
114 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
115 Malloc_t PerlMem_realloc();
116 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
120 PerlIO_printf(Perl_error_log,
121 "Reallocation too large: %lx\n", size) FLUSH;
124 #endif /* HAS_64K_LIMIT */
131 return safesysmalloc(size);
134 Perl_croak_nocontext("panic: realloc");
136 ptr = (Malloc_t)PerlMem_realloc(where,size);
137 PERL_ALLOC_CHECK(ptr);
139 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
140 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
147 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
154 /* safe version of system's free() */
157 Perl_safesysfree(Malloc_t where)
159 #ifdef PERL_IMPLICIT_SYS
162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
169 /* safe version of system's calloc() */
172 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
178 if (size * count > 0xffff) {
179 PerlIO_printf(Perl_error_log,
180 "Allocation too large: %lx\n", size * count) FLUSH;
183 #endif /* HAS_64K_LIMIT */
185 if ((long)size < 0 || (long)count < 0)
186 Perl_croak_nocontext("panic: calloc");
189 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
190 PERL_ALLOC_CHECK(ptr);
191 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));
193 memset((void*)ptr, 0, size);
199 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
208 struct mem_test_strut {
216 # define ALIGN sizeof(struct mem_test_strut)
218 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219 # define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221 # define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
226 ? ((size) - 1)/8 + 5 \
230 Perl_safexmalloc(I32 x, MEM_SIZE size)
232 register char* where = (char*)safemalloc(size + ALIGN);
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
242 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
244 char *where = (char*)wh;
247 return safexmalloc(0,size);
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
263 Perl_safexfree(Malloc_t wh)
266 char *where = (char*)wh;
272 size = sizeof_chunk(where);
273 x = where[0] + 100 * where[1];
275 xycount[x][SIZE_TO_Y(size)]--;
280 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
292 S_xstat(pTHX_ int flag)
294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
297 for (j = 0; j < MAXYCOUNT; j++) {
301 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);
302 for (i = 0; i < MAXXCOUNT; i++) {
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
308 ? xcount[i] /* Have something */
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
312 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
314 lastxcount[i] = xcount[i];
315 for (j = 0; j < MAXYCOUNT; j++) {
317 ? xycount[i][j] /* Have something */
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
321 PerlIO_printf(Perl_debug_log,"%3ld ",
323 ? xycount[i][j] - lastxycount[i][j]
325 lastxycount[i][j] = xycount[i][j];
327 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
330 PerlIO_printf(Perl_debug_log, "\n");
334 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
335 for (j = 0; j < MAXYCOUNT; j++) {
337 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
339 PerlIO_printf(Perl_debug_log, " . ");
342 PerlIO_printf(Perl_debug_log, "\n");
346 #endif /* LEAKTEST */
348 /* copy a string up to some (non-backslashed) delimiter, if any */
351 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
354 for (tolen = 0; from < fromend; from++, tolen++) {
356 if (from[1] == delim)
365 else if (*from == delim)
376 /* return ptr to little string in big string, NULL if not found */
377 /* This routine was donated by Corey Satten. */
380 Perl_instr(pTHX_ register const char *big, register const char *little)
382 register const char *s, *x;
393 for (x=big,s=little; *s; /**/ ) {
402 return (char*)(big-1);
407 /* same as instr but allow embedded nulls */
410 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
412 register const char *s, *x;
413 register I32 first = *little;
414 register const char *littleend = lend;
416 if (!first && little >= littleend)
418 if (bigend - big < littleend - little)
420 bigend -= littleend - little++;
421 while (big <= bigend) {
424 for (x=big,s=little; s < littleend; /**/ ) {
431 return (char*)(big-1);
436 /* reverse of the above--find last substring */
439 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
441 register const char *bigbeg;
442 register const char *s, *x;
443 register I32 first = *little;
444 register const char *littleend = lend;
446 if (!first && little >= littleend)
447 return (char*)bigend;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
453 for (x=big+2,s=little; s < littleend; /**/ ) {
460 return (char*)(big+1);
466 * Set up for a new ctype locale.
469 Perl_new_ctype(pTHX_ const char *newctype)
471 #ifdef USE_LOCALE_CTYPE
475 for (i = 0; i < 256; i++) {
477 PL_fold_locale[i] = toLOWER_LC(i);
478 else if (isLOWER_LC(i))
479 PL_fold_locale[i] = toUPPER_LC(i);
481 PL_fold_locale[i] = i;
484 #endif /* USE_LOCALE_CTYPE */
488 * Set up for a new collation locale.
491 Perl_new_collate(pTHX_ const char *newcoll)
493 #ifdef USE_LOCALE_COLLATE
496 if (PL_collation_name) {
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516 #define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
522 Perl_croak(aTHX_ "strxfrm() gets absurd");
523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
528 #endif /* USE_LOCALE_COLLATE */
532 Perl_set_numeric_radix(pTHX)
534 #ifdef USE_LOCALE_NUMERIC
535 # ifdef HAS_LOCALECONV
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
545 PL_numeric_radix = 0;
546 # endif /* HAS_LOCALECONV */
547 #endif /* USE_LOCALE_NUMERIC */
551 * Set up for a new numeric locale.
554 Perl_new_numeric(pTHX_ const char *newnum)
556 #ifdef USE_LOCALE_NUMERIC
559 if (PL_numeric_name) {
560 Safefree(PL_numeric_name);
561 PL_numeric_name = NULL;
562 PL_numeric_standard = TRUE;
563 PL_numeric_local = TRUE;
568 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
569 Safefree(PL_numeric_name);
570 PL_numeric_name = savepv(newnum);
571 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
572 PL_numeric_local = TRUE;
576 #endif /* USE_LOCALE_NUMERIC */
580 Perl_set_numeric_standard(pTHX)
582 #ifdef USE_LOCALE_NUMERIC
584 if (! PL_numeric_standard) {
585 setlocale(LC_NUMERIC, "C");
586 PL_numeric_standard = TRUE;
587 PL_numeric_local = FALSE;
590 #endif /* USE_LOCALE_NUMERIC */
594 Perl_set_numeric_local(pTHX)
596 #ifdef USE_LOCALE_NUMERIC
598 if (! PL_numeric_local) {
599 setlocale(LC_NUMERIC, PL_numeric_name);
600 PL_numeric_standard = FALSE;
601 PL_numeric_local = TRUE;
605 #endif /* USE_LOCALE_NUMERIC */
609 * Initialize locale awareness.
612 Perl_init_i18nl10n(pTHX_ int printwarn)
616 * 1 = set ok or not applicable,
617 * 0 = fallback to C locale,
618 * -1 = fallback to C locale failed
623 #ifdef USE_LOCALE_CTYPE
624 char *curctype = NULL;
625 #endif /* USE_LOCALE_CTYPE */
626 #ifdef USE_LOCALE_COLLATE
627 char *curcoll = NULL;
628 #endif /* USE_LOCALE_COLLATE */
629 #ifdef USE_LOCALE_NUMERIC
631 #endif /* USE_LOCALE_NUMERIC */
633 char *language = PerlEnv_getenv("LANGUAGE");
635 char *lc_all = PerlEnv_getenv("LC_ALL");
636 char *lang = PerlEnv_getenv("LANG");
637 bool setlocale_failure = FALSE;
639 #ifdef LOCALE_ENVIRON_REQUIRED
642 * Ultrix setlocale(..., "") fails if there are no environment
643 * variables from which to get a locale name.
650 if (setlocale(LC_ALL, ""))
653 setlocale_failure = TRUE;
655 if (!setlocale_failure) {
656 #ifdef USE_LOCALE_CTYPE
659 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
661 setlocale_failure = TRUE;
663 curctype = savepv(curctype);
664 #endif /* USE_LOCALE_CTYPE */
665 #ifdef USE_LOCALE_COLLATE
667 setlocale(LC_COLLATE,
668 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
670 setlocale_failure = TRUE;
672 curcoll = savepv(curcoll);
673 #endif /* USE_LOCALE_COLLATE */
674 #ifdef USE_LOCALE_NUMERIC
676 setlocale(LC_NUMERIC,
677 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
679 setlocale_failure = TRUE;
681 curnum = savepv(curnum);
682 #endif /* USE_LOCALE_NUMERIC */
687 #endif /* !LOCALE_ENVIRON_REQUIRED */
690 if (! setlocale(LC_ALL, ""))
691 setlocale_failure = TRUE;
694 if (!setlocale_failure) {
695 #ifdef USE_LOCALE_CTYPE
696 if (! (curctype = setlocale(LC_CTYPE, "")))
697 setlocale_failure = TRUE;
699 curctype = savepv(curctype);
700 #endif /* USE_LOCALE_CTYPE */
701 #ifdef USE_LOCALE_COLLATE
702 if (! (curcoll = setlocale(LC_COLLATE, "")))
703 setlocale_failure = TRUE;
705 curcoll = savepv(curcoll);
706 #endif /* USE_LOCALE_COLLATE */
707 #ifdef USE_LOCALE_NUMERIC
708 if (! (curnum = setlocale(LC_NUMERIC, "")))
709 setlocale_failure = TRUE;
711 curnum = savepv(curnum);
712 #endif /* USE_LOCALE_NUMERIC */
715 if (setlocale_failure) {
717 bool locwarn = (printwarn > 1 ||
719 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
724 PerlIO_printf(Perl_error_log,
725 "perl: warning: Setting locale failed.\n");
729 PerlIO_printf(Perl_error_log,
730 "perl: warning: Setting locale failed for the categories:\n\t");
731 #ifdef USE_LOCALE_CTYPE
733 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
734 #endif /* USE_LOCALE_CTYPE */
735 #ifdef USE_LOCALE_COLLATE
737 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
738 #endif /* USE_LOCALE_COLLATE */
739 #ifdef USE_LOCALE_NUMERIC
741 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
742 #endif /* USE_LOCALE_NUMERIC */
743 PerlIO_printf(Perl_error_log, "\n");
747 PerlIO_printf(Perl_error_log,
748 "perl: warning: Please check that your locale settings:\n");
751 PerlIO_printf(Perl_error_log,
752 "\tLANGUAGE = %c%s%c,\n",
753 language ? '"' : '(',
754 language ? language : "unset",
755 language ? '"' : ')');
758 PerlIO_printf(Perl_error_log,
759 "\tLC_ALL = %c%s%c,\n",
761 lc_all ? lc_all : "unset",
766 for (e = environ; *e; e++) {
767 if (strnEQ(*e, "LC_", 3)
768 && strnNE(*e, "LC_ALL=", 7)
769 && (p = strchr(*e, '=')))
770 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
771 (int)(p - *e), *e, p + 1);
775 PerlIO_printf(Perl_error_log,
778 lang ? lang : "unset",
781 PerlIO_printf(Perl_error_log,
782 " are supported and installed on your system.\n");
787 if (setlocale(LC_ALL, "C")) {
789 PerlIO_printf(Perl_error_log,
790 "perl: warning: Falling back to the standard locale (\"C\").\n");
795 PerlIO_printf(Perl_error_log,
796 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
803 #ifdef USE_LOCALE_CTYPE
804 || !(curctype || setlocale(LC_CTYPE, "C"))
805 #endif /* USE_LOCALE_CTYPE */
806 #ifdef USE_LOCALE_COLLATE
807 || !(curcoll || setlocale(LC_COLLATE, "C"))
808 #endif /* USE_LOCALE_COLLATE */
809 #ifdef USE_LOCALE_NUMERIC
810 || !(curnum || setlocale(LC_NUMERIC, "C"))
811 #endif /* USE_LOCALE_NUMERIC */
815 PerlIO_printf(Perl_error_log,
816 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
820 #endif /* ! LC_ALL */
822 #ifdef USE_LOCALE_CTYPE
823 curctype = savepv(setlocale(LC_CTYPE, Nullch));
824 #endif /* USE_LOCALE_CTYPE */
825 #ifdef USE_LOCALE_COLLATE
826 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
827 #endif /* USE_LOCALE_COLLATE */
828 #ifdef USE_LOCALE_NUMERIC
829 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
830 #endif /* USE_LOCALE_NUMERIC */
834 #ifdef USE_LOCALE_CTYPE
836 #endif /* USE_LOCALE_CTYPE */
838 #ifdef USE_LOCALE_COLLATE
839 new_collate(curcoll);
840 #endif /* USE_LOCALE_COLLATE */
842 #ifdef USE_LOCALE_NUMERIC
844 #endif /* USE_LOCALE_NUMERIC */
847 #endif /* USE_LOCALE */
849 #ifdef USE_LOCALE_CTYPE
850 if (curctype != NULL)
852 #endif /* USE_LOCALE_CTYPE */
853 #ifdef USE_LOCALE_COLLATE
856 #endif /* USE_LOCALE_COLLATE */
857 #ifdef USE_LOCALE_NUMERIC
860 #endif /* USE_LOCALE_NUMERIC */
864 /* Backwards compatibility. */
866 Perl_init_i18nl14n(pTHX_ int printwarn)
868 return init_i18nl10n(printwarn);
871 #ifdef USE_LOCALE_COLLATE
874 * mem_collxfrm() is a bit like strxfrm() but with two important
875 * differences. First, it handles embedded NULs. Second, it allocates
876 * a bit more memory than needed for the transformed data itself.
877 * The real transformed data begins at offset sizeof(collationix).
878 * Please see sv_collxfrm() to see how this is used.
881 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
884 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
886 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
887 /* the +1 is for the terminating NUL. */
889 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
890 New(171, xbuf, xAlloc, char);
894 *(U32*)xbuf = PL_collation_ix;
895 xout = sizeof(PL_collation_ix);
896 for (xin = 0; xin < len; ) {
900 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
903 if (xused < xAlloc - xout)
905 xAlloc = (2 * xAlloc) + 1;
906 Renew(xbuf, xAlloc, char);
911 xin += strlen(s + xin) + 1;
914 /* Embedded NULs are understood but silently skipped
915 * because they make no sense in locale collation. */
919 *xlen = xout - sizeof(PL_collation_ix);
928 #endif /* USE_LOCALE_COLLATE */
930 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
932 /* As a space optimization, we do not compile tables for strings of length
933 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
934 special-cased in fbm_instr().
936 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
939 =for apidoc fbm_compile
941 Analyses the string in order to make fast searches on it using fbm_instr()
942 -- the Boyer-Moore algorithm.
948 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
957 if (flags & FBMcf_TAIL)
958 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
959 s = (U8*)SvPV_force(sv, len);
960 (void)SvUPGRADE(sv, SVt_PVBM);
961 if (len == 0) /* TAIL might be on on a zero-length string. */
971 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
972 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
973 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
974 memset((void*)table, mlen, 256);
975 table[-1] = (U8)flags;
977 sb = s - mlen + 1; /* first char (maybe) */
979 if (table[*s] == mlen)
984 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
987 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
988 for (i = 0; i < len; i++) {
989 if (PL_freq[s[i]] < frequency) {
991 frequency = PL_freq[s[i]];
994 BmRARE(sv) = s[rarest];
995 BmPREVIOUS(sv) = rarest;
996 BmUSEFUL(sv) = 100; /* Initial value */
997 if (flags & FBMcf_TAIL)
999 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1000 BmRARE(sv),BmPREVIOUS(sv)));
1003 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
1004 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1008 =for apidoc fbm_instr
1010 Returns the location of the SV in the string delimited by C<str> and
1011 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1012 does not have to be fbm_compiled, but the search will not be as fast
1019 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
1021 register unsigned char *s;
1023 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1024 register STRLEN littlelen = l;
1025 register I32 multiline = flags & FBMrf_MULTILINE;
1027 if (bigend - big < littlelen) {
1028 if ( SvTAIL(littlestr)
1029 && (bigend - big == littlelen - 1)
1031 || (*big == *little &&
1032 memEQ((char *)big, (char *)little, littlelen - 1))))
1037 if (littlelen <= 2) { /* Special-cased */
1039 if (littlelen == 1) {
1040 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1041 /* Know that bigend != big. */
1042 if (bigend[-1] == '\n')
1043 return (char *)(bigend - 1);
1044 return (char *) bigend;
1047 while (s < bigend) {
1052 if (SvTAIL(littlestr))
1053 return (char *) bigend;
1057 return (char*)big; /* Cannot be SvTAIL! */
1059 /* littlelen is 2 */
1060 if (SvTAIL(littlestr) && !multiline) {
1061 if (bigend[-1] == '\n' && bigend[-2] == *little)
1062 return (char*)bigend - 2;
1063 if (bigend[-1] == *little)
1064 return (char*)bigend - 1;
1068 /* This should be better than FBM if c1 == c2, and almost
1069 as good otherwise: maybe better since we do less indirection.
1070 And we save a lot of memory by caching no table. */
1071 register unsigned char c1 = little[0];
1072 register unsigned char c2 = little[1];
1077 while (s <= bigend) {
1080 return (char*)s - 1;
1087 goto check_1char_anchor;
1098 goto check_1char_anchor;
1101 while (s <= bigend) {
1104 return (char*)s - 1;
1106 goto check_1char_anchor;
1115 check_1char_anchor: /* One char and anchor! */
1116 if (SvTAIL(littlestr) && (*bigend == *little))
1117 return (char *)bigend; /* bigend is already decremented. */
1120 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1121 s = bigend - littlelen;
1122 if (s >= big && bigend[-1] == '\n' && *s == *little
1123 /* Automatically of length > 2 */
1124 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1126 return (char*)s; /* how sweet it is */
1129 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1131 return (char*)s + 1; /* how sweet it is */
1135 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1136 char *b = ninstr((char*)big,(char*)bigend,
1137 (char*)little, (char*)little + littlelen);
1139 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1140 /* Chop \n from littlestr: */
1141 s = bigend - littlelen + 1;
1143 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1152 { /* Do actual FBM. */
1153 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1154 register unsigned char *oldlittle;
1156 if (littlelen > bigend - big)
1158 --littlelen; /* Last char found by table lookup */
1160 s = big + littlelen;
1161 little += littlelen; /* last char */
1168 if ((tmp = table[*s])) {
1170 if (bigend - s > tmp) {
1176 if ((s += tmp) < bigend)
1181 else { /* less expensive than calling strncmp() */
1182 register unsigned char *olds = s;
1187 if (*--s == *--little)
1189 s = olds + 1; /* here we pay the price for failure */
1191 if (s < bigend) /* fake up continue to outer loop */
1199 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1200 && memEQ((char *)(bigend - littlelen),
1201 (char *)(oldlittle - littlelen), littlelen) )
1202 return (char*)bigend - littlelen;
1207 /* start_shift, end_shift are positive quantities which give offsets
1208 of ends of some substring of bigstr.
1209 If `last' we want the last occurence.
1210 old_posp is the way of communication between consequent calls if
1211 the next call needs to find the .
1212 The initial *old_posp should be -1.
1214 Note that we take into account SvTAIL, so one can get extra
1215 optimizations if _ALL flag is set.
1218 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1219 if PL_multiline. In fact if !PL_multiline the autoritative answer
1220 is not supported yet. */
1223 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1226 register unsigned char *s, *x;
1227 register unsigned char *big;
1229 register I32 previous;
1231 register unsigned char *little;
1232 register I32 stop_pos;
1233 register unsigned char *littleend;
1237 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1238 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1240 if ( BmRARE(littlestr) == '\n'
1241 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1242 little = (unsigned char *)(SvPVX(littlestr));
1243 littleend = little + SvCUR(littlestr);
1250 little = (unsigned char *)(SvPVX(littlestr));
1251 littleend = little + SvCUR(littlestr);
1253 /* The value of pos we can start at: */
1254 previous = BmPREVIOUS(littlestr);
1255 big = (unsigned char *)(SvPVX(bigstr));
1256 /* The value of pos we can stop at: */
1257 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1258 if (previous + start_shift > stop_pos) {
1259 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1263 while (pos < previous + start_shift) {
1264 if (!(pos += PL_screamnext[pos]))
1269 if (pos >= stop_pos) break;
1270 if (big[pos-previous] != first)
1272 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1278 if (s == littleend) {
1280 if (!last) return (char *)(big+pos-previous);
1283 } while ( pos += PL_screamnext[pos] );
1284 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1285 #else /* !POINTERRIGOR */
1288 if (pos >= stop_pos) break;
1289 if (big[pos] != first)
1291 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1297 if (s == littleend) {
1299 if (!last) return (char *)(big+pos);
1302 } while ( pos += PL_screamnext[pos] );
1304 return (char *)(big+(*old_posp));
1305 #endif /* POINTERRIGOR */
1307 if (!SvTAIL(littlestr) || (end_shift > 0))
1309 /* Ignore the trailing "\n". This code is not microoptimized */
1310 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1311 stop_pos = littleend - little; /* Actual littlestr len */
1316 && ((stop_pos == 1) ||
1317 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
1323 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1325 register U8 *a = (U8 *)s1;
1326 register U8 *b = (U8 *)s2;
1328 if (*a != *b && *a != PL_fold[*b])
1336 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1338 register U8 *a = (U8 *)s1;
1339 register U8 *b = (U8 *)s2;
1341 if (*a != *b && *a != PL_fold_locale[*b])
1348 /* copy a string to a safe spot */
1353 Copy a string to a safe spot. This does not use an SV.
1359 Perl_savepv(pTHX_ const char *sv)
1361 register char *newaddr;
1363 New(902,newaddr,strlen(sv)+1,char);
1364 (void)strcpy(newaddr,sv);
1368 /* same thing but with a known length */
1373 Copy a string to a safe spot. The C<len> indicates number of bytes to
1374 copy. This does not use an SV.
1380 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1382 register char *newaddr;
1384 New(903,newaddr,len+1,char);
1385 Copy(sv,newaddr,len,char); /* might not be null terminated */
1386 newaddr[len] = '\0'; /* is now */
1390 /* the SV for Perl_form() and mess() is not kept in an arena */
1400 return sv_2mortal(newSVpvn("",0));
1405 /* Create as PVMG now, to avoid any upgrading later */
1406 New(905, sv, 1, SV);
1407 Newz(905, any, 1, XPVMG);
1408 SvFLAGS(sv) = SVt_PVMG;
1409 SvANY(sv) = (void*)any;
1410 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1415 #if defined(PERL_IMPLICIT_CONTEXT)
1417 Perl_form_nocontext(const char* pat, ...)
1422 va_start(args, pat);
1423 retval = vform(pat, &args);
1427 #endif /* PERL_IMPLICIT_CONTEXT */
1430 Perl_form(pTHX_ const char* pat, ...)
1434 va_start(args, pat);
1435 retval = vform(pat, &args);
1441 Perl_vform(pTHX_ const char *pat, va_list *args)
1443 SV *sv = mess_alloc();
1444 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1448 #if defined(PERL_IMPLICIT_CONTEXT)
1450 Perl_mess_nocontext(const char *pat, ...)
1455 va_start(args, pat);
1456 retval = vmess(pat, &args);
1460 #endif /* PERL_IMPLICIT_CONTEXT */
1463 Perl_mess(pTHX_ const char *pat, ...)
1467 va_start(args, pat);
1468 retval = vmess(pat, &args);
1474 Perl_vmess(pTHX_ const char *pat, va_list *args)
1476 SV *sv = mess_alloc();
1477 static char dgd[] = " during global destruction.\n";
1479 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1480 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1482 if (CopLINE(PL_curcop))
1483 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1484 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1485 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1486 bool line_mode = (RsSIMPLE(PL_rs) &&
1487 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1488 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1489 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1490 line_mode ? "line" : "chunk",
1491 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1495 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1497 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1503 Perl_vdie(pTHX_ const char* pat, va_list *args)
1507 int was_in_eval = PL_in_eval;
1514 DEBUG_S(PerlIO_printf(Perl_debug_log,
1515 "%p: die: curstack = %p, mainstack = %p\n",
1516 thr, PL_curstack, PL_mainstack));
1519 msv = vmess(pat, args);
1520 if (PL_errors && SvCUR(PL_errors)) {
1521 sv_catsv(PL_errors, msv);
1522 message = SvPV(PL_errors, msglen);
1523 SvCUR_set(PL_errors, 0);
1526 message = SvPV(msv,msglen);
1533 DEBUG_S(PerlIO_printf(Perl_debug_log,
1534 "%p: die: message = %s\ndiehook = %p\n",
1535 thr, message, PL_diehook));
1537 /* sv_2cv might call Perl_croak() */
1538 SV *olddiehook = PL_diehook;
1540 SAVESPTR(PL_diehook);
1541 PL_diehook = Nullsv;
1542 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1544 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1551 msg = newSVpvn(message, msglen);
1559 PUSHSTACKi(PERLSI_DIEHOOK);
1563 call_sv((SV*)cv, G_DISCARD);
1569 PL_restartop = die_where(message, msglen);
1570 DEBUG_S(PerlIO_printf(Perl_debug_log,
1571 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1572 thr, PL_restartop, was_in_eval, PL_top_env));
1573 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1575 return PL_restartop;
1578 #if defined(PERL_IMPLICIT_CONTEXT)
1580 Perl_die_nocontext(const char* pat, ...)
1585 va_start(args, pat);
1586 o = vdie(pat, &args);
1590 #endif /* PERL_IMPLICIT_CONTEXT */
1593 Perl_die(pTHX_ const char* pat, ...)
1597 va_start(args, pat);
1598 o = vdie(pat, &args);
1604 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1615 msv = vmess(pat, args);
1616 if (PL_errors && SvCUR(PL_errors)) {
1617 sv_catsv(PL_errors, msv);
1618 message = SvPV(PL_errors, msglen);
1619 SvCUR_set(PL_errors, 0);
1622 message = SvPV(msv,msglen);
1629 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1630 PTR2UV(thr), message));
1633 /* sv_2cv might call Perl_croak() */
1634 SV *olddiehook = PL_diehook;
1636 SAVESPTR(PL_diehook);
1637 PL_diehook = Nullsv;
1638 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1640 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1647 msg = newSVpvn(message, msglen);
1655 PUSHSTACKi(PERLSI_DIEHOOK);
1659 call_sv((SV*)cv, G_DISCARD);
1665 PL_restartop = die_where(message, msglen);
1670 /* SFIO can really mess with your errno */
1673 PerlIO *serr = Perl_error_log;
1675 PerlIO_write(serr, message, msglen);
1676 (void)PerlIO_flush(serr);
1684 #if defined(PERL_IMPLICIT_CONTEXT)
1686 Perl_croak_nocontext(const char *pat, ...)
1690 va_start(args, pat);
1695 #endif /* PERL_IMPLICIT_CONTEXT */
1700 This is the XSUB-writer's interface to Perl's C<die> function.
1701 Normally use this function the same way you use the C C<printf>
1702 function. See C<warn>.
1704 If you want to throw an exception object, assign the object to
1705 C<$@> and then pass C<Nullch> to croak():
1707 errsv = get_sv("@", TRUE);
1708 sv_setsv(errsv, exception_object);
1715 Perl_croak(pTHX_ const char *pat, ...)
1718 va_start(args, pat);
1725 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1734 msv = vmess(pat, args);
1735 message = SvPV(msv, msglen);
1738 /* sv_2cv might call Perl_warn() */
1740 SV *oldwarnhook = PL_warnhook;
1742 SAVESPTR(PL_warnhook);
1743 PL_warnhook = Nullsv;
1744 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1746 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1752 msg = newSVpvn(message, msglen);
1756 PUSHSTACKi(PERLSI_WARNHOOK);
1760 call_sv((SV*)cv, G_DISCARD);
1767 PerlIO *serr = Perl_error_log;
1769 PerlIO_write(serr, message, msglen);
1771 DEBUG_L(*message == '!'
1772 ? (xstat(message[1]=='!'
1773 ? (message[2]=='!' ? 2 : 1)
1778 (void)PerlIO_flush(serr);
1782 #if defined(PERL_IMPLICIT_CONTEXT)
1784 Perl_warn_nocontext(const char *pat, ...)
1788 va_start(args, pat);
1792 #endif /* PERL_IMPLICIT_CONTEXT */
1797 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1798 function the same way you use the C C<printf> function. See
1805 Perl_warn(pTHX_ const char *pat, ...)
1808 va_start(args, pat);
1813 #if defined(PERL_IMPLICIT_CONTEXT)
1815 Perl_warner_nocontext(U32 err, const char *pat, ...)
1819 va_start(args, pat);
1820 vwarner(err, pat, &args);
1823 #endif /* PERL_IMPLICIT_CONTEXT */
1826 Perl_warner(pTHX_ U32 err, const char* pat,...)
1829 va_start(args, pat);
1830 vwarner(err, pat, &args);
1835 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1845 msv = vmess(pat, args);
1846 message = SvPV(msv, msglen);
1850 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1851 #endif /* USE_THREADS */
1853 /* sv_2cv might call Perl_croak() */
1854 SV *olddiehook = PL_diehook;
1856 SAVESPTR(PL_diehook);
1857 PL_diehook = Nullsv;
1858 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1860 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1866 msg = newSVpvn(message, msglen);
1870 PUSHSTACKi(PERLSI_DIEHOOK);
1874 call_sv((SV*)cv, G_DISCARD);
1880 PL_restartop = die_where(message, msglen);
1884 PerlIO *serr = Perl_error_log;
1885 PerlIO_write(serr, message, msglen);
1886 (void)PerlIO_flush(serr);
1893 /* sv_2cv might call Perl_warn() */
1895 SV *oldwarnhook = PL_warnhook;
1897 SAVESPTR(PL_warnhook);
1898 PL_warnhook = Nullsv;
1899 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1901 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1907 msg = newSVpvn(message, msglen);
1911 PUSHSTACKi(PERLSI_WARNHOOK);
1915 call_sv((SV*)cv, G_DISCARD);
1922 PerlIO *serr = Perl_error_log;
1923 PerlIO_write(serr, message, msglen);
1925 DEBUG_L(*message == '!'
1926 ? (xstat(message[1]=='!'
1927 ? (message[2]=='!' ? 2 : 1)
1932 (void)PerlIO_flush(serr);
1937 #ifdef USE_ENVIRON_ARRAY
1938 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
1939 #if !defined(WIN32) && !defined(__CYGWIN__)
1941 Perl_my_setenv(pTHX_ char *nam, char *val)
1943 #ifndef PERL_USE_SAFE_PUTENV
1944 /* most putenv()s leak, so we manipulate environ directly */
1945 register I32 i=setenv_getix(nam); /* where does it go? */
1947 if (environ == PL_origenviron) { /* need we copy environment? */
1953 for (max = i; environ[max]; max++) ;
1954 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1955 for (j=0; j<max; j++) { /* copy environment */
1956 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1957 strcpy(tmpenv[j], environ[j]);
1959 tmpenv[max] = Nullch;
1960 environ = tmpenv; /* tell exec where it is now */
1963 safesysfree(environ[i]);
1964 while (environ[i]) {
1965 environ[i] = environ[i+1];
1970 if (!environ[i]) { /* does not exist yet */
1971 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1972 environ[i+1] = Nullch; /* make sure it's null terminated */
1975 safesysfree(environ[i]);
1976 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1978 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1980 #else /* PERL_USE_SAFE_PUTENV */
1983 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1984 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1985 (void)putenv(new_env);
1986 #endif /* PERL_USE_SAFE_PUTENV */
1989 #else /* WIN32 || __CYGWIN__ */
1990 #if defined(__CYGWIN__)
1992 * Save environ of perl.exe, currently Cygwin links in separate environ's
1993 * for each exe/dll. Probably should be a member of impure_ptr.
1995 static char ***Perl_main_environ;
1998 Perl_my_setenv_init(char ***penviron)
2000 Perl_main_environ = penviron;
2004 Perl_my_setenv(pTHX_ char *nam, char *val)
2006 /* You can not directly manipulate the environ[] array because
2007 * the routines do some additional work that syncs the Cygwin
2008 * environment with the Windows environment.
2010 char *oldstr = environ[setenv_getix(nam)];
2016 safesysfree(oldstr);
2019 setenv(nam, val, 1);
2020 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
2021 if(oldstr && environ[setenv_getix(nam)] != oldstr)
2022 safesysfree(oldstr);
2024 #else /* if WIN32 */
2027 Perl_my_setenv(pTHX_ char *nam,char *val)
2030 #ifdef USE_WIN32_RTL_ENV
2032 register char *envstr;
2033 STRLEN namlen = strlen(nam);
2035 char *oldstr = environ[setenv_getix(nam)];
2037 /* putenv() has totally broken semantics in both the Borland
2038 * and Microsoft CRTLs. They either store the passed pointer in
2039 * the environment without making a copy, or make a copy and don't
2040 * free it. And on top of that, they dont free() old entries that
2041 * are being replaced/deleted. This means the caller must
2042 * free any old entries somehow, or we end up with a memory
2043 * leak every time my_setenv() is called. One might think
2044 * one could directly manipulate environ[], like the UNIX code
2045 * above, but direct changes to environ are not allowed when
2046 * calling putenv(), since the RTLs maintain an internal
2047 * *copy* of environ[]. Bad, bad, *bad* stink.
2058 vallen = strlen(val);
2059 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2060 (void)sprintf(envstr,"%s=%s",nam,val);
2061 (void)PerlEnv_putenv(envstr);
2063 safesysfree(oldstr);
2065 safesysfree(envstr); /* MSVCRT leaks without this */
2068 #else /* !USE_WIN32_RTL_ENV */
2070 register char *envstr;
2071 STRLEN len = strlen(nam) + 3;
2076 New(904, envstr, len, char);
2077 (void)sprintf(envstr,"%s=%s",nam,val);
2078 (void)PerlEnv_putenv(envstr);
2088 Perl_setenv_getix(pTHX_ char *nam)
2090 register I32 i, len = strlen(nam);
2092 for (i = 0; environ[i]; i++) {
2095 strnicmp(environ[i],nam,len) == 0
2097 strnEQ(environ[i],nam,len)
2099 && environ[i][len] == '=')
2100 break; /* strnEQ must come first to avoid */
2101 } /* potential SEGV's */
2105 #endif /* !VMS && !EPOC*/
2107 #ifdef UNLINK_ALL_VERSIONS
2109 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2113 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2118 /* this is a drop-in replacement for bcopy() */
2119 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2121 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2125 if (from - to >= 0) {
2133 *(--to) = *(--from);
2139 /* this is a drop-in replacement for memset() */
2142 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2152 /* this is a drop-in replacement for bzero() */
2153 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2155 Perl_my_bzero(register char *loc, register I32 len)
2165 /* this is a drop-in replacement for memcmp() */
2166 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2168 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2170 register U8 *a = (U8 *)s1;
2171 register U8 *b = (U8 *)s2;
2175 if (tmp = *a++ - *b++)
2180 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2184 #ifdef USE_CHAR_VSPRINTF
2189 vsprintf(char *dest, const char *pat, char *args)
2193 fakebuf._ptr = dest;
2194 fakebuf._cnt = 32767;
2198 fakebuf._flag = _IOWRT|_IOSTRG;
2199 _doprnt(pat, args, &fakebuf); /* what a kludge */
2200 (void)putc('\0', &fakebuf);
2201 #ifdef USE_CHAR_VSPRINTF
2204 return 0; /* perl doesn't use return value */
2208 #endif /* HAS_VPRINTF */
2211 #if BYTEORDER != 0x4321
2213 Perl_my_swap(pTHX_ short s)
2215 #if (BYTEORDER & 1) == 0
2218 result = ((s & 255) << 8) + ((s >> 8) & 255);
2226 Perl_my_htonl(pTHX_ long l)
2230 char c[sizeof(long)];
2233 #if BYTEORDER == 0x1234
2234 u.c[0] = (l >> 24) & 255;
2235 u.c[1] = (l >> 16) & 255;
2236 u.c[2] = (l >> 8) & 255;
2240 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2241 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2246 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2247 u.c[o & 0xf] = (l >> s) & 255;
2255 Perl_my_ntohl(pTHX_ long l)
2259 char c[sizeof(long)];
2262 #if BYTEORDER == 0x1234
2263 u.c[0] = (l >> 24) & 255;
2264 u.c[1] = (l >> 16) & 255;
2265 u.c[2] = (l >> 8) & 255;
2269 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2270 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2277 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2278 l |= (u.c[o & 0xf] & 255) << s;
2285 #endif /* BYTEORDER != 0x4321 */
2289 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2290 * If these functions are defined,
2291 * the BYTEORDER is neither 0x1234 nor 0x4321.
2292 * However, this is not assumed.
2296 #define HTOV(name,type) \
2298 name (register type n) \
2302 char c[sizeof(type)]; \
2306 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2307 u.c[i] = (n >> s) & 0xFF; \
2312 #define VTOH(name,type) \
2314 name (register type n) \
2318 char c[sizeof(type)]; \
2324 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2325 n += (u.c[i] & 0xFF) << s; \
2330 #if defined(HAS_HTOVS) && !defined(htovs)
2333 #if defined(HAS_HTOVL) && !defined(htovl)
2336 #if defined(HAS_VTOHS) && !defined(vtohs)
2339 #if defined(HAS_VTOHL) && !defined(vtohl)
2343 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2344 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2346 Perl_my_popen(pTHX_ char *cmd, char *mode)
2349 register I32 This, that;
2352 I32 doexec = strNE(cmd,"-");
2356 PERL_FLUSHALL_FOR_CHILD;
2359 return my_syspopen(aTHX_ cmd,mode);
2362 This = (*mode == 'w');
2364 if (doexec && PL_tainting) {
2366 taint_proper("Insecure %s%s", "EXEC");
2368 if (PerlProc_pipe(p) < 0)
2370 if (doexec && PerlProc_pipe(pp) >= 0)
2372 while ((pid = (doexec?vfork():fork())) < 0) {
2373 if (errno != EAGAIN) {
2374 PerlLIO_close(p[This]);
2376 PerlLIO_close(pp[0]);
2377 PerlLIO_close(pp[1]);
2380 Perl_croak(aTHX_ "Can't fork");
2392 PerlLIO_close(p[THAT]);
2394 PerlLIO_close(pp[0]);
2395 #if defined(HAS_FCNTL) && defined(F_SETFD)
2396 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2399 if (p[THIS] != (*mode == 'r')) {
2400 PerlLIO_dup2(p[THIS], *mode == 'r');
2401 PerlLIO_close(p[THIS]);
2405 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2411 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2415 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2418 #endif /* defined OS2 */
2420 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2421 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2423 hv_clear(PL_pidstatus); /* we have no children */
2428 do_execfree(); /* free any memory malloced by child on vfork */
2429 PerlLIO_close(p[that]);
2431 PerlLIO_close(pp[1]);
2432 if (p[that] < p[This]) {
2433 PerlLIO_dup2(p[This], p[that]);
2434 PerlLIO_close(p[This]);
2438 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2440 (void)SvUPGRADE(sv,SVt_IV);
2442 PL_forkprocess = pid;
2443 if (did_pipes && pid > 0) {
2447 while (n < sizeof(int)) {
2448 n1 = PerlLIO_read(pp[0],
2449 (void*)(((char*)&errkid)+n),
2455 PerlLIO_close(pp[0]);
2457 if (n) { /* Error */
2458 if (n != sizeof(int))
2459 Perl_croak(aTHX_ "panic: kid popen errno read");
2460 errno = errkid; /* Propagate errno from kid */
2465 PerlLIO_close(pp[0]);
2466 return PerlIO_fdopen(p[This], mode);
2469 #if defined(atarist) || defined(DJGPP)
2472 Perl_my_popen(pTHX_ char *cmd, char *mode)
2474 /* Needs work for PerlIO ! */
2475 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2476 PERL_FLUSHALL_FOR_CHILD;
2477 return popen(PerlIO_exportFILE(cmd, 0), mode);
2481 #endif /* !DOSISH */
2485 Perl_dump_fds(pTHX_ char *s)
2488 struct stat tmpstatbuf;
2490 PerlIO_printf(Perl_debug_log,"%s", s);
2491 for (fd = 0; fd < 32; fd++) {
2492 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2493 PerlIO_printf(Perl_debug_log," %d",fd);
2495 PerlIO_printf(Perl_debug_log,"\n");
2497 #endif /* DUMP_FDS */
2501 dup2(int oldfd, int newfd)
2503 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2506 PerlLIO_close(newfd);
2507 return fcntl(oldfd, F_DUPFD, newfd);
2509 #define DUP2_MAX_FDS 256
2510 int fdtmp[DUP2_MAX_FDS];
2516 PerlLIO_close(newfd);
2517 /* good enough for low fd's... */
2518 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2519 if (fdx >= DUP2_MAX_FDS) {
2527 PerlLIO_close(fdtmp[--fdx]);
2534 #ifdef HAS_SIGACTION
2537 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2539 struct sigaction act, oact;
2541 act.sa_handler = handler;
2542 sigemptyset(&act.sa_mask);
2545 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2548 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2549 act.sa_flags |= SA_NOCLDWAIT;
2551 if (sigaction(signo, &act, &oact) == -1)
2554 return oact.sa_handler;
2558 Perl_rsignal_state(pTHX_ int signo)
2560 struct sigaction oact;
2562 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2565 return oact.sa_handler;
2569 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2571 struct sigaction act;
2573 act.sa_handler = handler;
2574 sigemptyset(&act.sa_mask);
2577 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2580 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2581 act.sa_flags |= SA_NOCLDWAIT;
2583 return sigaction(signo, &act, save);
2587 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2589 return sigaction(signo, save, (struct sigaction *)NULL);
2592 #else /* !HAS_SIGACTION */
2595 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2597 return PerlProc_signal(signo, handler);
2600 static int sig_trapped;
2610 Perl_rsignal_state(pTHX_ int signo)
2612 Sighandler_t oldsig;
2615 oldsig = PerlProc_signal(signo, sig_trap);
2616 PerlProc_signal(signo, oldsig);
2618 PerlProc_kill(PerlProc_getpid(), signo);
2623 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2625 *save = PerlProc_signal(signo, handler);
2626 return (*save == SIG_ERR) ? -1 : 0;
2630 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2632 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2635 #endif /* !HAS_SIGACTION */
2636 #endif /* !PERL_MICRO */
2638 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2639 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2641 Perl_my_pclose(pTHX_ PerlIO *ptr)
2643 Sigsave_t hstat, istat, qstat;
2651 int saved_vaxc_errno;
2654 int saved_win32_errno;
2658 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2662 *svp = &PL_sv_undef;
2664 if (pid == -1) { /* Opened by popen. */
2665 return my_syspclose(ptr);
2668 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2669 saved_errno = errno;
2671 saved_vaxc_errno = vaxc$errno;
2674 saved_win32_errno = GetLastError();
2678 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2681 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2682 rsignal_save(SIGINT, SIG_IGN, &istat);
2683 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2686 pid2 = wait4pid(pid, &status, 0);
2687 } while (pid2 == -1 && errno == EINTR);
2689 rsignal_restore(SIGHUP, &hstat);
2690 rsignal_restore(SIGINT, &istat);
2691 rsignal_restore(SIGQUIT, &qstat);
2694 SETERRNO(saved_errno, saved_vaxc_errno);
2697 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2699 #endif /* !DOSISH */
2701 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2703 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2707 char spid[TYPE_CHARS(int)];
2711 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2713 sprintf(spid, "%"IVdf, (IV)pid);
2714 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2715 if (svp && *svp != &PL_sv_undef) {
2716 *statusp = SvIVX(*svp);
2717 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2724 hv_iterinit(PL_pidstatus);
2725 if ((entry = hv_iternext(PL_pidstatus))) {
2726 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2727 sv = hv_iterval(PL_pidstatus,entry);
2728 *statusp = SvIVX(sv);
2729 sprintf(spid, "%"IVdf, (IV)pid);
2730 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2736 # ifdef HAS_WAITPID_RUNTIME
2737 if (!HAS_WAITPID_RUNTIME)
2740 return PerlProc_waitpid(pid,statusp,flags);
2742 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2743 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2745 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2750 Perl_croak(aTHX_ "Can't do waitpid with flags");
2752 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2753 pidgone(result,*statusp);
2761 #endif /* !DOSISH || OS2 || WIN32 */
2765 Perl_pidgone(pTHX_ Pid_t pid, int status)
2768 char spid[TYPE_CHARS(int)];
2770 sprintf(spid, "%"IVdf, (IV)pid);
2771 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2772 (void)SvUPGRADE(sv,SVt_IV);
2777 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2780 int /* Cannot prototype with I32
2782 my_syspclose(PerlIO *ptr)
2785 Perl_my_pclose(pTHX_ PerlIO *ptr)
2788 /* Needs work for PerlIO ! */
2789 FILE *f = PerlIO_findFILE(ptr);
2790 I32 result = pclose(f);
2792 result = (result << 8) & 0xff00;
2794 PerlIO_releaseFILE(ptr,f);
2800 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2803 register const char *frombase = from;
2806 register const char c = *from;
2811 while (count-- > 0) {
2812 for (todo = len; todo > 0; todo--) {
2820 Perl_cast_ulong(pTHX_ NV f)
2825 # define BIGDOUBLE 2147483648.0
2827 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2830 return (unsigned long)f;
2832 return (unsigned long)along;
2836 /* Unfortunately, on some systems the cast_uv() function doesn't
2837 work with the system-supplied definition of ULONG_MAX. The
2838 comparison (f >= ULONG_MAX) always comes out true. It must be a
2839 problem with the compiler constant folding.
2841 In any case, this workaround should be fine on any two's complement
2842 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2844 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2847 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2849 -- Kenneth Albanowski <kjahds@kjahds.com>
2853 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2857 Perl_cast_i32(pTHX_ NV f)
2860 return (I32) I32_MAX;
2862 return (I32) I32_MIN;
2867 Perl_cast_iv(pTHX_ NV f)
2872 if (f >= (NV)UV_MAX)
2883 Perl_cast_uv(pTHX_ NV f)
2886 return (UV) MY_UV_MAX;
2900 Perl_same_dirent(pTHX_ char *a, char *b)
2902 char *fa = strrchr(a,'/');
2903 char *fb = strrchr(b,'/');
2904 struct stat tmpstatbuf1;
2905 struct stat tmpstatbuf2;
2906 SV *tmpsv = sv_newmortal();
2919 sv_setpv(tmpsv, ".");
2921 sv_setpvn(tmpsv, a, fa - a);
2922 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2925 sv_setpv(tmpsv, ".");
2927 sv_setpvn(tmpsv, b, fb - b);
2928 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2930 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2931 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2933 #endif /* !HAS_RENAME */
2936 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2938 register char *s = start;
2939 register NV rnv = 0.0;
2940 register UV ruv = 0;
2941 register bool seenb = FALSE;
2942 register bool overflowed = FALSE;
2944 for (; len-- && *s; s++) {
2945 if (!(*s == '0' || *s == '1')) {
2946 if (*s == '_' && len && *retlen
2947 && (s[1] == '0' || s[1] == '1'))
2952 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2953 /* Disallow 0bbb0b0bbb... */
2959 if (ckWARN(WARN_DIGIT))
2960 Perl_warner(aTHX_ WARN_DIGIT,
2961 "Illegal binary digit '%c' ignored", *s);
2966 register UV xuv = ruv << 1;
2968 if ((xuv >> 1) != ruv) {
2972 if (ckWARN_d(WARN_OVERFLOW))
2973 Perl_warner(aTHX_ WARN_OVERFLOW,
2974 "Integer overflow in binary number");
2977 ruv = xuv | (*s - '0');
2981 /* If an NV has not enough bits in its mantissa to
2982 * represent an UV this summing of small low-order numbers
2983 * is a waste of time (because the NV cannot preserve
2984 * the low-order bits anyway): we could just remember when
2985 * did we overflow and in the end just multiply rnv by the
2992 if ( ( overflowed && rnv > 4294967295.0)
2994 || (!overflowed && ruv > 0xffffffff )
2998 if (ckWARN(WARN_PORTABLE))
2999 Perl_warner(aTHX_ WARN_PORTABLE,
3000 "Binary number > 0b11111111111111111111111111111111 non-portable");
3002 *retlen = s - start;
3007 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
3009 register char *s = start;
3010 register NV rnv = 0.0;
3011 register UV ruv = 0;
3012 register bool overflowed = FALSE;
3014 for (; len-- && *s; s++) {
3015 if (!(*s >= '0' && *s <= '7')) {
3016 if (*s == '_' && len && *retlen
3017 && (s[1] >= '0' && s[1] <= '7'))
3023 /* Allow \octal to work the DWIM way (that is, stop scanning
3024 * as soon as non-octal characters are seen, complain only iff
3025 * someone seems to want to use the digits eight and nine). */
3026 if (*s == '8' || *s == '9') {
3028 if (ckWARN(WARN_DIGIT))
3029 Perl_warner(aTHX_ WARN_DIGIT,
3030 "Illegal octal digit '%c' ignored", *s);
3036 register UV xuv = ruv << 3;
3038 if ((xuv >> 3) != ruv) {
3042 if (ckWARN_d(WARN_OVERFLOW))
3043 Perl_warner(aTHX_ WARN_OVERFLOW,
3044 "Integer overflow in octal number");
3047 ruv = xuv | (*s - '0');
3051 /* If an NV has not enough bits in its mantissa to
3052 * represent an UV this summing of small low-order numbers
3053 * is a waste of time (because the NV cannot preserve
3054 * the low-order bits anyway): we could just remember when
3055 * did we overflow and in the end just multiply rnv by the
3056 * right amount of 8-tuples. */
3057 rnv += (NV)(*s - '0');
3062 if ( ( overflowed && rnv > 4294967295.0)
3064 || (!overflowed && ruv > 0xffffffff )
3068 if (ckWARN(WARN_PORTABLE))
3069 Perl_warner(aTHX_ WARN_PORTABLE,
3070 "Octal number > 037777777777 non-portable");
3072 *retlen = s - start;
3077 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3079 register char *s = start;
3080 register NV rnv = 0.0;
3081 register UV ruv = 0;
3082 register bool seenx = FALSE;
3083 register bool overflowed = FALSE;
3086 for (; len-- && *s; s++) {
3087 hexdigit = strchr((char *) PL_hexdigit, *s);
3089 if (*s == '_' && len && *retlen && s[1]
3090 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3095 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3096 /* Disallow 0xxx0x0xxx... */
3102 if (ckWARN(WARN_DIGIT))
3103 Perl_warner(aTHX_ WARN_DIGIT,
3104 "Illegal hexadecimal digit '%c' ignored", *s);
3109 register UV xuv = ruv << 4;
3111 if ((xuv >> 4) != ruv) {
3115 if (ckWARN_d(WARN_OVERFLOW))
3116 Perl_warner(aTHX_ WARN_OVERFLOW,
3117 "Integer overflow in hexadecimal number");
3120 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3124 /* If an NV has not enough bits in its mantissa to
3125 * represent an UV this summing of small low-order numbers
3126 * is a waste of time (because the NV cannot preserve
3127 * the low-order bits anyway): we could just remember when
3128 * did we overflow and in the end just multiply rnv by the
3129 * right amount of 16-tuples. */
3130 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3135 if ( ( overflowed && rnv > 4294967295.0)
3137 || (!overflowed && ruv > 0xffffffff )
3141 if (ckWARN(WARN_PORTABLE))
3142 Perl_warner(aTHX_ WARN_PORTABLE,
3143 "Hexadecimal number > 0xffffffff non-portable");
3145 *retlen = s - start;
3150 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3153 char *xfound = Nullch;
3154 char *xfailed = Nullch;
3155 char tmpbuf[MAXPATHLEN];
3159 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3160 # define SEARCH_EXTS ".bat", ".cmd", NULL
3161 # define MAX_EXT_LEN 4
3164 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3165 # define MAX_EXT_LEN 4
3168 # define SEARCH_EXTS ".pl", ".com", NULL
3169 # define MAX_EXT_LEN 4
3171 /* additional extensions to try in each dir if scriptname not found */
3173 char *exts[] = { SEARCH_EXTS };
3174 char **ext = search_ext ? search_ext : exts;
3175 int extidx = 0, i = 0;
3176 char *curext = Nullch;
3178 # define MAX_EXT_LEN 0
3182 * If dosearch is true and if scriptname does not contain path
3183 * delimiters, search the PATH for scriptname.
3185 * If SEARCH_EXTS is also defined, will look for each
3186 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3187 * while searching the PATH.
3189 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3190 * proceeds as follows:
3191 * If DOSISH or VMSISH:
3192 * + look for ./scriptname{,.foo,.bar}
3193 * + search the PATH for scriptname{,.foo,.bar}
3196 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3197 * this will not look in '.' if it's not in the PATH)
3202 # ifdef ALWAYS_DEFTYPES
3203 len = strlen(scriptname);
3204 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3205 int hasdir, idx = 0, deftypes = 1;
3208 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3211 int hasdir, idx = 0, deftypes = 1;
3214 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3216 /* The first time through, just add SEARCH_EXTS to whatever we
3217 * already have, so we can check for default file types. */
3219 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3225 if ((strlen(tmpbuf) + strlen(scriptname)
3226 + MAX_EXT_LEN) >= sizeof tmpbuf)
3227 continue; /* don't search dir with too-long name */
3228 strcat(tmpbuf, scriptname);
3232 if (strEQ(scriptname, "-"))
3234 if (dosearch) { /* Look in '.' first. */
3235 char *cur = scriptname;
3237 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3239 if (strEQ(ext[i++],curext)) {
3240 extidx = -1; /* already has an ext */
3245 DEBUG_p(PerlIO_printf(Perl_debug_log,
3246 "Looking for %s\n",cur));
3247 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3248 && !S_ISDIR(PL_statbuf.st_mode)) {
3256 if (cur == scriptname) {
3257 len = strlen(scriptname);
3258 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3260 cur = strcpy(tmpbuf, scriptname);
3262 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3263 && strcpy(tmpbuf+len, ext[extidx++]));
3268 #ifdef MACOS_TRADITIONAL
3269 if (dosearch && !strchr(scriptname, ':') &&
3270 (s = PerlEnv_getenv("Commands")))
3272 if (dosearch && !strchr(scriptname, '/')
3274 && !strchr(scriptname, '\\')
3276 && (s = PerlEnv_getenv("PATH")))
3281 PL_bufend = s + strlen(s);
3282 while (s < PL_bufend) {
3283 #ifdef MACOS_TRADITIONAL
3284 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3288 #if defined(atarist) || defined(DOSISH)
3293 && *s != ';'; len++, s++) {
3294 if (len < sizeof tmpbuf)
3297 if (len < sizeof tmpbuf)
3299 #else /* ! (atarist || DOSISH) */
3300 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3303 #endif /* ! (atarist || DOSISH) */
3304 #endif /* MACOS_TRADITIONAL */
3307 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3308 continue; /* don't search dir with too-long name */
3309 #ifdef MACOS_TRADITIONAL
3310 if (len && tmpbuf[len - 1] != ':')
3311 tmpbuf[len++] = ':';
3314 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3315 && tmpbuf[len - 1] != '/'
3316 && tmpbuf[len - 1] != '\\'
3319 tmpbuf[len++] = '/';
3320 if (len == 2 && tmpbuf[0] == '.')
3323 (void)strcpy(tmpbuf + len, scriptname);
3327 len = strlen(tmpbuf);
3328 if (extidx > 0) /* reset after previous loop */
3332 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3333 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3334 if (S_ISDIR(PL_statbuf.st_mode)) {
3338 } while ( retval < 0 /* not there */
3339 && extidx>=0 && ext[extidx] /* try an extension? */
3340 && strcpy(tmpbuf+len, ext[extidx++])
3345 if (S_ISREG(PL_statbuf.st_mode)
3346 && cando(S_IRUSR,TRUE,&PL_statbuf)
3347 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3348 && cando(S_IXUSR,TRUE,&PL_statbuf)
3352 xfound = tmpbuf; /* bingo! */
3356 xfailed = savepv(tmpbuf);
3359 if (!xfound && !seen_dot && !xfailed &&
3360 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3361 || S_ISDIR(PL_statbuf.st_mode)))
3363 seen_dot = 1; /* Disable message. */
3365 if (flags & 1) { /* do or die? */
3366 Perl_croak(aTHX_ "Can't %s %s%s%s",
3367 (xfailed ? "execute" : "find"),
3368 (xfailed ? xfailed : scriptname),
3369 (xfailed ? "" : " on PATH"),
3370 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3372 scriptname = Nullch;
3376 scriptname = xfound;
3378 return (scriptname ? savepv(scriptname) : Nullch);
3381 #ifndef PERL_GET_CONTEXT_DEFINED
3384 Perl_get_context(void)
3386 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3387 # ifdef OLD_PTHREADS_API
3389 if (pthread_getspecific(PL_thr_key, &t))
3390 Perl_croak_nocontext("panic: pthread_getspecific");
3393 # ifdef I_MACH_CTHREADS
3394 return (void*)cthread_data(cthread_self());
3396 return (void*)pthread_getspecific(PL_thr_key);
3405 Perl_set_context(void *t)
3407 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3408 # ifdef I_MACH_CTHREADS
3409 cthread_set_data(cthread_self(), t);
3411 if (pthread_setspecific(PL_thr_key, t))
3412 Perl_croak_nocontext("panic: pthread_setspecific");
3417 #endif /* !PERL_GET_CONTEXT_DEFINED */
3422 /* Very simplistic scheduler for now */
3426 thr = thr->i.next_run;
3430 Perl_cond_init(pTHX_ perl_cond *cp)
3436 Perl_cond_signal(pTHX_ perl_cond *cp)
3439 perl_cond cond = *cp;
3444 /* Insert t in the runnable queue just ahead of us */
3445 t->i.next_run = thr->i.next_run;
3446 thr->i.next_run->i.prev_run = t;
3447 t->i.prev_run = thr;
3448 thr->i.next_run = t;
3449 thr->i.wait_queue = 0;
3450 /* Remove from the wait queue */
3456 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3459 perl_cond cond, cond_next;
3461 for (cond = *cp; cond; cond = cond_next) {
3463 /* Insert t in the runnable queue just ahead of us */
3464 t->i.next_run = thr->i.next_run;
3465 thr->i.next_run->i.prev_run = t;
3466 t->i.prev_run = thr;
3467 thr->i.next_run = t;
3468 thr->i.wait_queue = 0;
3469 /* Remove from the wait queue */
3470 cond_next = cond->next;
3477 Perl_cond_wait(pTHX_ perl_cond *cp)
3481 if (thr->i.next_run == thr)
3482 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3484 New(666, cond, 1, struct perl_wait_queue);
3488 thr->i.wait_queue = cond;
3489 /* Remove ourselves from runnable queue */
3490 thr->i.next_run->i.prev_run = thr->i.prev_run;
3491 thr->i.prev_run->i.next_run = thr->i.next_run;
3493 #endif /* FAKE_THREADS */
3496 Perl_condpair_magic(pTHX_ SV *sv)
3500 SvUPGRADE(sv, SVt_PVMG);
3501 mg = mg_find(sv, 'm');
3505 New(53, cp, 1, condpair_t);
3506 MUTEX_INIT(&cp->mutex);
3507 COND_INIT(&cp->owner_cond);
3508 COND_INIT(&cp->cond);
3510 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3511 mg = mg_find(sv, 'm');
3513 /* someone else beat us to initialising it */
3514 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3515 MUTEX_DESTROY(&cp->mutex);
3516 COND_DESTROY(&cp->owner_cond);
3517 COND_DESTROY(&cp->cond);
3521 sv_magic(sv, Nullsv, 'm', 0, 0);
3523 mg->mg_ptr = (char *)cp;
3524 mg->mg_len = sizeof(cp);
3525 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3526 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3527 "%p: condpair_magic %p\n", thr, sv));)
3534 Perl_sv_lock(pTHX_ SV *osv)
3544 mg = condpair_magic(sv);
3545 MUTEX_LOCK(MgMUTEXP(mg));
3546 if (MgOWNER(mg) == thr)
3547 MUTEX_UNLOCK(MgMUTEXP(mg));
3550 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3552 DEBUG_S(PerlIO_printf(Perl_debug_log,
3553 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3554 PTR2UV(thr), PTR2UV(sv));)
3555 MUTEX_UNLOCK(MgMUTEXP(mg));
3556 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3558 UNLOCK_SV_LOCK_MUTEX;
3563 * Make a new perl thread structure using t as a prototype. Some of the
3564 * fields for the new thread are copied from the prototype thread, t,
3565 * so t should not be running in perl at the time this function is
3566 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3567 * thread calling new_struct_thread) clearly satisfies this constraint.
3569 struct perl_thread *
3570 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3572 #if !defined(PERL_IMPLICIT_CONTEXT)
3573 struct perl_thread *thr;
3579 sv = newSVpvn("", 0);
3580 SvGROW(sv, sizeof(struct perl_thread) + 1);
3581 SvCUR_set(sv, sizeof(struct perl_thread));
3582 thr = (Thread) SvPVX(sv);
3584 memset(thr, 0xab, sizeof(struct perl_thread));
3591 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3592 PL_efloatbuf = (char*)NULL;
3595 Zero(thr, 1, struct perl_thread);
3601 PL_curcop = &PL_compiling;
3602 thr->interp = t->interp;
3603 thr->cvcache = newHV();
3604 thr->threadsv = newAV();
3605 thr->specific = newAV();
3606 thr->errsv = newSVpvn("", 0);
3607 thr->flags = THRf_R_JOINABLE;
3608 MUTEX_INIT(&thr->mutex);
3612 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
3615 PL_statname = NEWSV(66,0);
3616 PL_errors = newSVpvn("", 0);
3618 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3619 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3620 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3621 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3622 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3624 PL_reginterp_cnt = 0;
3625 PL_lastscream = Nullsv;
3628 PL_reg_start_tmp = 0;
3629 PL_reg_start_tmpl = 0;
3630 PL_reg_poscache = Nullch;
3632 /* parent thread's data needs to be locked while we make copy */
3633 MUTEX_LOCK(&t->mutex);
3635 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3636 PL_protect = t->Tprotect;
3639 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3640 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3641 PL_curstash = t->Tcurstash; /* always be set to main? */
3643 PL_tainted = t->Ttainted;
3644 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3645 PL_nrs = newSVsv(t->Tnrs);
3646 PL_rs = SvREFCNT_inc(PL_nrs);
3647 PL_last_in_gv = Nullgv;
3648 PL_ofslen = t->Tofslen;
3649 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3650 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3651 PL_chopset = t->Tchopset;
3652 PL_bodytarget = newSVsv(t->Tbodytarget);
3653 PL_toptarget = newSVsv(t->Ttoptarget);
3654 if (t->Tformtarget == t->Ttoptarget)
3655 PL_formtarget = PL_toptarget;
3657 PL_formtarget = PL_bodytarget;
3659 /* Initialise all per-thread SVs that the template thread used */
3660 svp = AvARRAY(t->threadsv);
3661 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3662 if (*svp && *svp != &PL_sv_undef) {
3663 SV *sv = newSVsv(*svp);
3664 av_store(thr->threadsv, i, sv);
3665 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3666 DEBUG_S(PerlIO_printf(Perl_debug_log,
3667 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3671 thr->threadsvp = AvARRAY(thr->threadsv);
3673 MUTEX_LOCK(&PL_threads_mutex);
3675 thr->tid = ++PL_threadnum;
3676 thr->next = t->next;
3679 thr->next->prev = thr;
3680 MUTEX_UNLOCK(&PL_threads_mutex);
3682 /* done copying parent's state */
3683 MUTEX_UNLOCK(&t->mutex);
3685 #ifdef HAVE_THREAD_INTERN
3686 Perl_init_thread_intern(thr);
3687 #endif /* HAVE_THREAD_INTERN */
3690 #endif /* USE_THREADS */
3692 #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
3694 * This hack is to force load of "huge" support from libm.a
3695 * So it is in perl for (say) POSIX to use.
3696 * Needed for SunOS with Sun's 'acc' for example.
3701 # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3708 #ifdef PERL_GLOBAL_STRUCT
3717 Perl_get_op_names(pTHX)
3723 Perl_get_op_descs(pTHX)
3729 Perl_get_no_modify(pTHX)
3731 return (char*)PL_no_modify;
3735 Perl_get_opargs(pTHX)
3741 Perl_get_ppaddr(pTHX)
3743 return (PPADDR_t*)PL_ppaddr;
3746 #ifndef HAS_GETENV_LEN
3748 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3750 char *env_trans = PerlEnv_getenv(env_elem);
3752 *len = strlen(env_trans);
3759 Perl_get_vtbl(pTHX_ int vtbl_id)
3761 MGVTBL* result = Null(MGVTBL*);
3765 result = &PL_vtbl_sv;
3768 result = &PL_vtbl_env;
3770 case want_vtbl_envelem:
3771 result = &PL_vtbl_envelem;
3774 result = &PL_vtbl_sig;
3776 case want_vtbl_sigelem:
3777 result = &PL_vtbl_sigelem;
3779 case want_vtbl_pack:
3780 result = &PL_vtbl_pack;
3782 case want_vtbl_packelem:
3783 result = &PL_vtbl_packelem;
3785 case want_vtbl_dbline:
3786 result = &PL_vtbl_dbline;
3789 result = &PL_vtbl_isa;
3791 case want_vtbl_isaelem:
3792 result = &PL_vtbl_isaelem;
3794 case want_vtbl_arylen:
3795 result = &PL_vtbl_arylen;
3797 case want_vtbl_glob:
3798 result = &PL_vtbl_glob;
3800 case want_vtbl_mglob:
3801 result = &PL_vtbl_mglob;
3803 case want_vtbl_nkeys:
3804 result = &PL_vtbl_nkeys;
3806 case want_vtbl_taint:
3807 result = &PL_vtbl_taint;
3809 case want_vtbl_substr:
3810 result = &PL_vtbl_substr;
3813 result = &PL_vtbl_vec;
3816 result = &PL_vtbl_pos;
3819 result = &PL_vtbl_bm;
3822 result = &PL_vtbl_fm;
3824 case want_vtbl_uvar:
3825 result = &PL_vtbl_uvar;
3828 case want_vtbl_mutex:
3829 result = &PL_vtbl_mutex;
3832 case want_vtbl_defelem:
3833 result = &PL_vtbl_defelem;
3835 case want_vtbl_regexp:
3836 result = &PL_vtbl_regexp;
3838 case want_vtbl_regdata:
3839 result = &PL_vtbl_regdata;
3841 case want_vtbl_regdatum:
3842 result = &PL_vtbl_regdatum;
3844 #ifdef USE_LOCALE_COLLATE
3845 case want_vtbl_collxfrm:
3846 result = &PL_vtbl_collxfrm;
3849 case want_vtbl_amagic:
3850 result = &PL_vtbl_amagic;
3852 case want_vtbl_amagicelem:
3853 result = &PL_vtbl_amagicelem;
3855 case want_vtbl_backref:
3856 result = &PL_vtbl_backref;
3863 Perl_my_fflush_all(pTHX)
3866 return PerlIO_flush(NULL);
3869 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3870 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3871 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3873 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3874 open_max = sysconf(_SC_OPEN_MAX);
3877 open_max = FOPEN_MAX;
3880 open_max = OPEN_MAX;
3891 for (i = 0; i < open_max; i++)
3892 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3893 STDIO_STREAM_ARRAY[i]._file < open_max &&
3894 STDIO_STREAM_ARRAY[i]._flag)
3895 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3899 SETERRNO(EBADF,RMS$_IFI);
3905 Perl_my_atof(pTHX_ const char* s)
3908 #ifdef USE_LOCALE_NUMERIC
3909 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3913 SET_NUMERIC_STANDARD();
3915 SET_NUMERIC_LOCAL();
3916 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3928 Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3933 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3934 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
3936 char *pars = OP_IS_FILETEST(op) ? "" : "()";
3937 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
3938 "socket" : "filehandle";
3941 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
3943 warn_type = WARN_CLOSED;
3947 warn_type = WARN_UNOPENED;
3950 if (gv && isGV(gv)) {
3951 SV *sv = sv_newmortal();
3952 gv_efullname4(sv, gv, Nullch, FALSE);
3956 if (name && *name) {
3957 Perl_warner(aTHX_ warn_type,
3958 "%s%s on %s %s %s", func, pars, vile, type, name);
3959 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3960 Perl_warner(aTHX_ warn_type,
3961 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3965 Perl_warner(aTHX_ warn_type,
3966 "%s%s on %s %s", func, pars, vile, type);
3967 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3968 Perl_warner(aTHX_ warn_type,
3969 "\t(Are you trying to call %s%s on dirhandle?)\n",