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;
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;
669 #endif /* USE_LOCALE_COLLATE */
670 #ifdef USE_LOCALE_NUMERIC
672 setlocale(LC_NUMERIC,
673 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
675 setlocale_failure = TRUE;
676 #endif /* USE_LOCALE_NUMERIC */
681 #endif /* !LOCALE_ENVIRON_REQUIRED */
684 if (! setlocale(LC_ALL, ""))
685 setlocale_failure = TRUE;
688 if (!setlocale_failure) {
689 #ifdef USE_LOCALE_CTYPE
690 if (! (curctype = setlocale(LC_CTYPE, "")))
691 setlocale_failure = TRUE;
692 #endif /* USE_LOCALE_CTYPE */
693 #ifdef USE_LOCALE_COLLATE
694 if (! (curcoll = setlocale(LC_COLLATE, "")))
695 setlocale_failure = TRUE;
696 #endif /* USE_LOCALE_COLLATE */
697 #ifdef USE_LOCALE_NUMERIC
698 if (! (curnum = setlocale(LC_NUMERIC, "")))
699 setlocale_failure = TRUE;
700 #endif /* USE_LOCALE_NUMERIC */
703 if (setlocale_failure) {
705 bool locwarn = (printwarn > 1 ||
707 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
712 PerlIO_printf(Perl_error_log,
713 "perl: warning: Setting locale failed.\n");
717 PerlIO_printf(Perl_error_log,
718 "perl: warning: Setting locale failed for the categories:\n\t");
719 #ifdef USE_LOCALE_CTYPE
721 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
722 #endif /* USE_LOCALE_CTYPE */
723 #ifdef USE_LOCALE_COLLATE
725 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
726 #endif /* USE_LOCALE_COLLATE */
727 #ifdef USE_LOCALE_NUMERIC
729 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
730 #endif /* USE_LOCALE_NUMERIC */
731 PerlIO_printf(Perl_error_log, "\n");
735 PerlIO_printf(Perl_error_log,
736 "perl: warning: Please check that your locale settings:\n");
739 PerlIO_printf(Perl_error_log,
740 "\tLANGUAGE = %c%s%c,\n",
741 language ? '"' : '(',
742 language ? language : "unset",
743 language ? '"' : ')');
746 PerlIO_printf(Perl_error_log,
747 "\tLC_ALL = %c%s%c,\n",
749 lc_all ? lc_all : "unset",
754 for (e = environ; *e; e++) {
755 if (strnEQ(*e, "LC_", 3)
756 && strnNE(*e, "LC_ALL=", 7)
757 && (p = strchr(*e, '=')))
758 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
759 (int)(p - *e), *e, p + 1);
763 PerlIO_printf(Perl_error_log,
766 lang ? lang : "unset",
769 PerlIO_printf(Perl_error_log,
770 " are supported and installed on your system.\n");
775 if (setlocale(LC_ALL, "C")) {
777 PerlIO_printf(Perl_error_log,
778 "perl: warning: Falling back to the standard locale (\"C\").\n");
783 PerlIO_printf(Perl_error_log,
784 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
791 #ifdef USE_LOCALE_CTYPE
792 || !(curctype || setlocale(LC_CTYPE, "C"))
793 #endif /* USE_LOCALE_CTYPE */
794 #ifdef USE_LOCALE_COLLATE
795 || !(curcoll || setlocale(LC_COLLATE, "C"))
796 #endif /* USE_LOCALE_COLLATE */
797 #ifdef USE_LOCALE_NUMERIC
798 || !(curnum || setlocale(LC_NUMERIC, "C"))
799 #endif /* USE_LOCALE_NUMERIC */
803 PerlIO_printf(Perl_error_log,
804 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
808 #endif /* ! LC_ALL */
810 #ifdef USE_LOCALE_CTYPE
811 curctype = setlocale(LC_CTYPE, Nullch);
812 #endif /* USE_LOCALE_CTYPE */
813 #ifdef USE_LOCALE_COLLATE
814 curcoll = setlocale(LC_COLLATE, Nullch);
815 #endif /* USE_LOCALE_COLLATE */
816 #ifdef USE_LOCALE_NUMERIC
817 curnum = setlocale(LC_NUMERIC, Nullch);
818 #endif /* USE_LOCALE_NUMERIC */
821 #ifdef USE_LOCALE_CTYPE
823 #endif /* USE_LOCALE_CTYPE */
825 #ifdef USE_LOCALE_COLLATE
826 new_collate(curcoll);
827 #endif /* USE_LOCALE_COLLATE */
829 #ifdef USE_LOCALE_NUMERIC
831 #endif /* USE_LOCALE_NUMERIC */
833 #endif /* USE_LOCALE */
838 /* Backwards compatibility. */
840 Perl_init_i18nl14n(pTHX_ int printwarn)
842 return init_i18nl10n(printwarn);
845 #ifdef USE_LOCALE_COLLATE
848 * mem_collxfrm() is a bit like strxfrm() but with two important
849 * differences. First, it handles embedded NULs. Second, it allocates
850 * a bit more memory than needed for the transformed data itself.
851 * The real transformed data begins at offset sizeof(collationix).
852 * Please see sv_collxfrm() to see how this is used.
855 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
858 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
860 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
861 /* the +1 is for the terminating NUL. */
863 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
864 New(171, xbuf, xAlloc, char);
868 *(U32*)xbuf = PL_collation_ix;
869 xout = sizeof(PL_collation_ix);
870 for (xin = 0; xin < len; ) {
874 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
877 if (xused < xAlloc - xout)
879 xAlloc = (2 * xAlloc) + 1;
880 Renew(xbuf, xAlloc, char);
885 xin += strlen(s + xin) + 1;
888 /* Embedded NULs are understood but silently skipped
889 * because they make no sense in locale collation. */
893 *xlen = xout - sizeof(PL_collation_ix);
902 #endif /* USE_LOCALE_COLLATE */
904 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
906 /* As a space optimization, we do not compile tables for strings of length
907 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
908 special-cased in fbm_instr().
910 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
913 =for apidoc fbm_compile
915 Analyses the string in order to make fast searches on it using fbm_instr()
916 -- the Boyer-Moore algorithm.
922 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
931 if (flags & FBMcf_TAIL)
932 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
933 s = (U8*)SvPV_force(sv, len);
934 (void)SvUPGRADE(sv, SVt_PVBM);
935 if (len == 0) /* TAIL might be on on a zero-length string. */
945 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
946 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
947 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
948 memset((void*)table, mlen, 256);
949 table[-1] = (U8)flags;
951 sb = s - mlen + 1; /* first char (maybe) */
953 if (table[*s] == mlen)
958 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
961 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
962 for (i = 0; i < len; i++) {
963 if (PL_freq[s[i]] < frequency) {
965 frequency = PL_freq[s[i]];
968 BmRARE(sv) = s[rarest];
969 BmPREVIOUS(sv) = rarest;
970 BmUSEFUL(sv) = 100; /* Initial value */
971 if (flags & FBMcf_TAIL)
973 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
974 BmRARE(sv),BmPREVIOUS(sv)));
977 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
978 /* If SvTAIL is actually due to \Z or \z, this gives false positives
982 =for apidoc fbm_instr
984 Returns the location of the SV in the string delimited by C<str> and
985 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
986 does not have to be fbm_compiled, but the search will not be as fast
993 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
995 register unsigned char *s;
997 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
998 register STRLEN littlelen = l;
999 register I32 multiline = flags & FBMrf_MULTILINE;
1001 if (bigend - big < littlelen) {
1002 if ( SvTAIL(littlestr)
1003 && (bigend - big == littlelen - 1)
1005 || (*big == *little &&
1006 memEQ((char *)big, (char *)little, littlelen - 1))))
1011 if (littlelen <= 2) { /* Special-cased */
1013 if (littlelen == 1) {
1014 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1015 /* Know that bigend != big. */
1016 if (bigend[-1] == '\n')
1017 return (char *)(bigend - 1);
1018 return (char *) bigend;
1021 while (s < bigend) {
1026 if (SvTAIL(littlestr))
1027 return (char *) bigend;
1031 return (char*)big; /* Cannot be SvTAIL! */
1033 /* littlelen is 2 */
1034 if (SvTAIL(littlestr) && !multiline) {
1035 if (bigend[-1] == '\n' && bigend[-2] == *little)
1036 return (char*)bigend - 2;
1037 if (bigend[-1] == *little)
1038 return (char*)bigend - 1;
1042 /* This should be better than FBM if c1 == c2, and almost
1043 as good otherwise: maybe better since we do less indirection.
1044 And we save a lot of memory by caching no table. */
1045 register unsigned char c1 = little[0];
1046 register unsigned char c2 = little[1];
1051 while (s <= bigend) {
1054 return (char*)s - 1;
1061 goto check_1char_anchor;
1072 goto check_1char_anchor;
1075 while (s <= bigend) {
1078 return (char*)s - 1;
1080 goto check_1char_anchor;
1089 check_1char_anchor: /* One char and anchor! */
1090 if (SvTAIL(littlestr) && (*bigend == *little))
1091 return (char *)bigend; /* bigend is already decremented. */
1094 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1095 s = bigend - littlelen;
1096 if (s >= big && bigend[-1] == '\n' && *s == *little
1097 /* Automatically of length > 2 */
1098 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1100 return (char*)s; /* how sweet it is */
1103 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1105 return (char*)s + 1; /* how sweet it is */
1109 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1110 char *b = ninstr((char*)big,(char*)bigend,
1111 (char*)little, (char*)little + littlelen);
1113 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1114 /* Chop \n from littlestr: */
1115 s = bigend - littlelen + 1;
1117 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1126 { /* Do actual FBM. */
1127 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1128 register unsigned char *oldlittle;
1130 if (littlelen > bigend - big)
1132 --littlelen; /* Last char found by table lookup */
1134 s = big + littlelen;
1135 little += littlelen; /* last char */
1142 if ((tmp = table[*s])) {
1144 if (bigend - s > tmp) {
1150 if ((s += tmp) < bigend)
1155 else { /* less expensive than calling strncmp() */
1156 register unsigned char *olds = s;
1161 if (*--s == *--little)
1163 s = olds + 1; /* here we pay the price for failure */
1165 if (s < bigend) /* fake up continue to outer loop */
1173 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1174 && memEQ((char *)(bigend - littlelen),
1175 (char *)(oldlittle - littlelen), littlelen) )
1176 return (char*)bigend - littlelen;
1181 /* start_shift, end_shift are positive quantities which give offsets
1182 of ends of some substring of bigstr.
1183 If `last' we want the last occurence.
1184 old_posp is the way of communication between consequent calls if
1185 the next call needs to find the .
1186 The initial *old_posp should be -1.
1188 Note that we take into account SvTAIL, so one can get extra
1189 optimizations if _ALL flag is set.
1192 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1193 if PL_multiline. In fact if !PL_multiline the autoritative answer
1194 is not supported yet. */
1197 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1200 register unsigned char *s, *x;
1201 register unsigned char *big;
1203 register I32 previous;
1205 register unsigned char *little;
1206 register I32 stop_pos;
1207 register unsigned char *littleend;
1211 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1212 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1214 if ( BmRARE(littlestr) == '\n'
1215 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1216 little = (unsigned char *)(SvPVX(littlestr));
1217 littleend = little + SvCUR(littlestr);
1224 little = (unsigned char *)(SvPVX(littlestr));
1225 littleend = little + SvCUR(littlestr);
1227 /* The value of pos we can start at: */
1228 previous = BmPREVIOUS(littlestr);
1229 big = (unsigned char *)(SvPVX(bigstr));
1230 /* The value of pos we can stop at: */
1231 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1232 if (previous + start_shift > stop_pos) {
1233 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1237 while (pos < previous + start_shift) {
1238 if (!(pos += PL_screamnext[pos]))
1243 if (pos >= stop_pos) break;
1244 if (big[pos-previous] != first)
1246 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1252 if (s == littleend) {
1254 if (!last) return (char *)(big+pos-previous);
1257 } while ( pos += PL_screamnext[pos] );
1258 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1259 #else /* !POINTERRIGOR */
1262 if (pos >= stop_pos) break;
1263 if (big[pos] != first)
1265 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1271 if (s == littleend) {
1273 if (!last) return (char *)(big+pos);
1276 } while ( pos += PL_screamnext[pos] );
1278 return (char *)(big+(*old_posp));
1279 #endif /* POINTERRIGOR */
1281 if (!SvTAIL(littlestr) || (end_shift > 0))
1283 /* Ignore the trailing "\n". This code is not microoptimized */
1284 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1285 stop_pos = littleend - little; /* Actual littlestr len */
1290 && ((stop_pos == 1) ||
1291 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
1297 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1299 register U8 *a = (U8 *)s1;
1300 register U8 *b = (U8 *)s2;
1302 if (*a != *b && *a != PL_fold[*b])
1310 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1312 register U8 *a = (U8 *)s1;
1313 register U8 *b = (U8 *)s2;
1315 if (*a != *b && *a != PL_fold_locale[*b])
1322 /* copy a string to a safe spot */
1327 Copy a string to a safe spot. This does not use an SV.
1333 Perl_savepv(pTHX_ const char *sv)
1335 register char *newaddr;
1337 New(902,newaddr,strlen(sv)+1,char);
1338 (void)strcpy(newaddr,sv);
1342 /* same thing but with a known length */
1347 Copy a string to a safe spot. The C<len> indicates number of bytes to
1348 copy. This does not use an SV.
1354 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1356 register char *newaddr;
1358 New(903,newaddr,len+1,char);
1359 Copy(sv,newaddr,len,char); /* might not be null terminated */
1360 newaddr[len] = '\0'; /* is now */
1364 /* the SV for Perl_form() and mess() is not kept in an arena */
1374 return sv_2mortal(newSVpvn("",0));
1379 /* Create as PVMG now, to avoid any upgrading later */
1380 New(905, sv, 1, SV);
1381 Newz(905, any, 1, XPVMG);
1382 SvFLAGS(sv) = SVt_PVMG;
1383 SvANY(sv) = (void*)any;
1384 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1389 #if defined(PERL_IMPLICIT_CONTEXT)
1391 Perl_form_nocontext(const char* pat, ...)
1396 va_start(args, pat);
1397 retval = vform(pat, &args);
1401 #endif /* PERL_IMPLICIT_CONTEXT */
1404 Perl_form(pTHX_ const char* pat, ...)
1408 va_start(args, pat);
1409 retval = vform(pat, &args);
1415 Perl_vform(pTHX_ const char *pat, va_list *args)
1417 SV *sv = mess_alloc();
1418 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1422 #if defined(PERL_IMPLICIT_CONTEXT)
1424 Perl_mess_nocontext(const char *pat, ...)
1429 va_start(args, pat);
1430 retval = vmess(pat, &args);
1434 #endif /* PERL_IMPLICIT_CONTEXT */
1437 Perl_mess(pTHX_ const char *pat, ...)
1441 va_start(args, pat);
1442 retval = vmess(pat, &args);
1448 Perl_vmess(pTHX_ const char *pat, va_list *args)
1450 SV *sv = mess_alloc();
1451 static char dgd[] = " during global destruction.\n";
1453 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1454 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1456 if (CopLINE(PL_curcop))
1457 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1458 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1459 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1460 bool line_mode = (RsSIMPLE(PL_rs) &&
1461 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1462 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1463 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1464 line_mode ? "line" : "chunk",
1465 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1469 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1471 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1477 Perl_vdie(pTHX_ const char* pat, va_list *args)
1481 int was_in_eval = PL_in_eval;
1488 DEBUG_S(PerlIO_printf(Perl_debug_log,
1489 "%p: die: curstack = %p, mainstack = %p\n",
1490 thr, PL_curstack, PL_mainstack));
1493 msv = vmess(pat, args);
1494 if (PL_errors && SvCUR(PL_errors)) {
1495 sv_catsv(PL_errors, msv);
1496 message = SvPV(PL_errors, msglen);
1497 SvCUR_set(PL_errors, 0);
1500 message = SvPV(msv,msglen);
1507 DEBUG_S(PerlIO_printf(Perl_debug_log,
1508 "%p: die: message = %s\ndiehook = %p\n",
1509 thr, message, PL_diehook));
1511 /* sv_2cv might call Perl_croak() */
1512 SV *olddiehook = PL_diehook;
1514 SAVESPTR(PL_diehook);
1515 PL_diehook = Nullsv;
1516 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1518 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1525 msg = newSVpvn(message, msglen);
1533 PUSHSTACKi(PERLSI_DIEHOOK);
1537 call_sv((SV*)cv, G_DISCARD);
1543 PL_restartop = die_where(message, msglen);
1544 DEBUG_S(PerlIO_printf(Perl_debug_log,
1545 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1546 thr, PL_restartop, was_in_eval, PL_top_env));
1547 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1549 return PL_restartop;
1552 #if defined(PERL_IMPLICIT_CONTEXT)
1554 Perl_die_nocontext(const char* pat, ...)
1559 va_start(args, pat);
1560 o = vdie(pat, &args);
1564 #endif /* PERL_IMPLICIT_CONTEXT */
1567 Perl_die(pTHX_ const char* pat, ...)
1571 va_start(args, pat);
1572 o = vdie(pat, &args);
1578 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1589 msv = vmess(pat, args);
1590 if (PL_errors && SvCUR(PL_errors)) {
1591 sv_catsv(PL_errors, msv);
1592 message = SvPV(PL_errors, msglen);
1593 SvCUR_set(PL_errors, 0);
1596 message = SvPV(msv,msglen);
1603 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1604 PTR2UV(thr), message));
1607 /* sv_2cv might call Perl_croak() */
1608 SV *olddiehook = PL_diehook;
1610 SAVESPTR(PL_diehook);
1611 PL_diehook = Nullsv;
1612 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1614 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1621 msg = newSVpvn(message, msglen);
1629 PUSHSTACKi(PERLSI_DIEHOOK);
1633 call_sv((SV*)cv, G_DISCARD);
1639 PL_restartop = die_where(message, msglen);
1644 /* SFIO can really mess with your errno */
1647 PerlIO *serr = Perl_error_log;
1649 PerlIO_write(serr, message, msglen);
1650 (void)PerlIO_flush(serr);
1658 #if defined(PERL_IMPLICIT_CONTEXT)
1660 Perl_croak_nocontext(const char *pat, ...)
1664 va_start(args, pat);
1669 #endif /* PERL_IMPLICIT_CONTEXT */
1674 This is the XSUB-writer's interface to Perl's C<die> function.
1675 Normally use this function the same way you use the C C<printf>
1676 function. See C<warn>.
1678 If you want to throw an exception object, assign the object to
1679 C<$@> and then pass C<Nullch> to croak():
1681 errsv = get_sv("@", TRUE);
1682 sv_setsv(errsv, exception_object);
1689 Perl_croak(pTHX_ const char *pat, ...)
1692 va_start(args, pat);
1699 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1708 msv = vmess(pat, args);
1709 message = SvPV(msv, msglen);
1712 /* sv_2cv might call Perl_warn() */
1714 SV *oldwarnhook = PL_warnhook;
1716 SAVESPTR(PL_warnhook);
1717 PL_warnhook = Nullsv;
1718 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1720 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1726 msg = newSVpvn(message, msglen);
1730 PUSHSTACKi(PERLSI_WARNHOOK);
1734 call_sv((SV*)cv, G_DISCARD);
1741 PerlIO *serr = Perl_error_log;
1743 PerlIO_write(serr, message, msglen);
1745 DEBUG_L(*message == '!'
1746 ? (xstat(message[1]=='!'
1747 ? (message[2]=='!' ? 2 : 1)
1752 (void)PerlIO_flush(serr);
1756 #if defined(PERL_IMPLICIT_CONTEXT)
1758 Perl_warn_nocontext(const char *pat, ...)
1762 va_start(args, pat);
1766 #endif /* PERL_IMPLICIT_CONTEXT */
1771 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1772 function the same way you use the C C<printf> function. See
1779 Perl_warn(pTHX_ const char *pat, ...)
1782 va_start(args, pat);
1787 #if defined(PERL_IMPLICIT_CONTEXT)
1789 Perl_warner_nocontext(U32 err, const char *pat, ...)
1793 va_start(args, pat);
1794 vwarner(err, pat, &args);
1797 #endif /* PERL_IMPLICIT_CONTEXT */
1800 Perl_warner(pTHX_ U32 err, const char* pat,...)
1803 va_start(args, pat);
1804 vwarner(err, pat, &args);
1809 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1819 msv = vmess(pat, args);
1820 message = SvPV(msv, msglen);
1824 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1825 #endif /* USE_THREADS */
1827 /* sv_2cv might call Perl_croak() */
1828 SV *olddiehook = PL_diehook;
1830 SAVESPTR(PL_diehook);
1831 PL_diehook = Nullsv;
1832 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1834 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1840 msg = newSVpvn(message, msglen);
1844 PUSHSTACKi(PERLSI_DIEHOOK);
1848 call_sv((SV*)cv, G_DISCARD);
1854 PL_restartop = die_where(message, msglen);
1858 PerlIO *serr = Perl_error_log;
1859 PerlIO_write(serr, message, msglen);
1860 (void)PerlIO_flush(serr);
1867 /* sv_2cv might call Perl_warn() */
1869 SV *oldwarnhook = PL_warnhook;
1871 SAVESPTR(PL_warnhook);
1872 PL_warnhook = Nullsv;
1873 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1875 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1881 msg = newSVpvn(message, msglen);
1885 PUSHSTACKi(PERLSI_WARNHOOK);
1889 call_sv((SV*)cv, G_DISCARD);
1896 PerlIO *serr = Perl_error_log;
1897 PerlIO_write(serr, message, msglen);
1899 DEBUG_L(*message == '!'
1900 ? (xstat(message[1]=='!'
1901 ? (message[2]=='!' ? 2 : 1)
1906 (void)PerlIO_flush(serr);
1911 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1912 #if !defined(WIN32) && !defined(__CYGWIN__)
1914 Perl_my_setenv(pTHX_ char *nam, char *val)
1916 #ifndef PERL_USE_SAFE_PUTENV
1917 /* most putenv()s leak, so we manipulate environ directly */
1918 register I32 i=setenv_getix(nam); /* where does it go? */
1920 if (environ == PL_origenviron) { /* need we copy environment? */
1926 for (max = i; environ[max]; max++) ;
1927 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1928 for (j=0; j<max; j++) { /* copy environment */
1929 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1930 strcpy(tmpenv[j], environ[j]);
1932 tmpenv[max] = Nullch;
1933 environ = tmpenv; /* tell exec where it is now */
1936 safesysfree(environ[i]);
1937 while (environ[i]) {
1938 environ[i] = environ[i+1];
1943 if (!environ[i]) { /* does not exist yet */
1944 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1945 environ[i+1] = Nullch; /* make sure it's null terminated */
1948 safesysfree(environ[i]);
1949 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1951 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1953 #else /* PERL_USE_SAFE_PUTENV */
1956 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1957 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1958 (void)putenv(new_env);
1959 #endif /* PERL_USE_SAFE_PUTENV */
1962 #else /* WIN32 || __CYGWIN__ */
1963 #if defined(__CYGWIN__)
1965 * Save environ of perl.exe, currently Cygwin links in separate environ's
1966 * for each exe/dll. Probably should be a member of impure_ptr.
1968 static char ***Perl_main_environ;
1971 Perl_my_setenv_init(char ***penviron)
1973 Perl_main_environ = penviron;
1977 Perl_my_setenv(pTHX_ char *nam, char *val)
1979 /* You can not directly manipulate the environ[] array because
1980 * the routines do some additional work that syncs the Cygwin
1981 * environment with the Windows environment.
1983 char *oldstr = environ[setenv_getix(nam)];
1989 safesysfree(oldstr);
1992 setenv(nam, val, 1);
1993 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1994 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1995 safesysfree(oldstr);
1997 #else /* if WIN32 */
2000 Perl_my_setenv(pTHX_ char *nam,char *val)
2003 #ifdef USE_WIN32_RTL_ENV
2005 register char *envstr;
2006 STRLEN namlen = strlen(nam);
2008 char *oldstr = environ[setenv_getix(nam)];
2010 /* putenv() has totally broken semantics in both the Borland
2011 * and Microsoft CRTLs. They either store the passed pointer in
2012 * the environment without making a copy, or make a copy and don't
2013 * free it. And on top of that, they dont free() old entries that
2014 * are being replaced/deleted. This means the caller must
2015 * free any old entries somehow, or we end up with a memory
2016 * leak every time my_setenv() is called. One might think
2017 * one could directly manipulate environ[], like the UNIX code
2018 * above, but direct changes to environ are not allowed when
2019 * calling putenv(), since the RTLs maintain an internal
2020 * *copy* of environ[]. Bad, bad, *bad* stink.
2031 vallen = strlen(val);
2032 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
2033 (void)sprintf(envstr,"%s=%s",nam,val);
2034 (void)PerlEnv_putenv(envstr);
2036 safesysfree(oldstr);
2038 safesysfree(envstr); /* MSVCRT leaks without this */
2041 #else /* !USE_WIN32_RTL_ENV */
2043 register char *envstr;
2044 STRLEN len = strlen(nam) + 3;
2049 New(904, envstr, len, char);
2050 (void)sprintf(envstr,"%s=%s",nam,val);
2051 (void)PerlEnv_putenv(envstr);
2061 Perl_setenv_getix(pTHX_ char *nam)
2063 register I32 i, len = strlen(nam);
2065 for (i = 0; environ[i]; i++) {
2068 strnicmp(environ[i],nam,len) == 0
2070 strnEQ(environ[i],nam,len)
2072 && environ[i][len] == '=')
2073 break; /* strnEQ must come first to avoid */
2074 } /* potential SEGV's */
2080 #ifdef UNLINK_ALL_VERSIONS
2082 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2086 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2091 /* this is a drop-in replacement for bcopy() */
2092 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2094 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2098 if (from - to >= 0) {
2106 *(--to) = *(--from);
2112 /* this is a drop-in replacement for memset() */
2115 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2125 /* this is a drop-in replacement for bzero() */
2126 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2128 Perl_my_bzero(register char *loc, register I32 len)
2138 /* this is a drop-in replacement for memcmp() */
2139 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2141 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2143 register U8 *a = (U8 *)s1;
2144 register U8 *b = (U8 *)s2;
2148 if (tmp = *a++ - *b++)
2153 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2157 #ifdef USE_CHAR_VSPRINTF
2162 vsprintf(char *dest, const char *pat, char *args)
2166 fakebuf._ptr = dest;
2167 fakebuf._cnt = 32767;
2171 fakebuf._flag = _IOWRT|_IOSTRG;
2172 _doprnt(pat, args, &fakebuf); /* what a kludge */
2173 (void)putc('\0', &fakebuf);
2174 #ifdef USE_CHAR_VSPRINTF
2177 return 0; /* perl doesn't use return value */
2181 #endif /* HAS_VPRINTF */
2184 #if BYTEORDER != 0x4321
2186 Perl_my_swap(pTHX_ short s)
2188 #if (BYTEORDER & 1) == 0
2191 result = ((s & 255) << 8) + ((s >> 8) & 255);
2199 Perl_my_htonl(pTHX_ long l)
2203 char c[sizeof(long)];
2206 #if BYTEORDER == 0x1234
2207 u.c[0] = (l >> 24) & 255;
2208 u.c[1] = (l >> 16) & 255;
2209 u.c[2] = (l >> 8) & 255;
2213 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2214 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2219 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2220 u.c[o & 0xf] = (l >> s) & 255;
2228 Perl_my_ntohl(pTHX_ long l)
2232 char c[sizeof(long)];
2235 #if BYTEORDER == 0x1234
2236 u.c[0] = (l >> 24) & 255;
2237 u.c[1] = (l >> 16) & 255;
2238 u.c[2] = (l >> 8) & 255;
2242 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2243 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2250 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2251 l |= (u.c[o & 0xf] & 255) << s;
2258 #endif /* BYTEORDER != 0x4321 */
2262 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2263 * If these functions are defined,
2264 * the BYTEORDER is neither 0x1234 nor 0x4321.
2265 * However, this is not assumed.
2269 #define HTOV(name,type) \
2271 name (register type n) \
2275 char c[sizeof(type)]; \
2279 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2280 u.c[i] = (n >> s) & 0xFF; \
2285 #define VTOH(name,type) \
2287 name (register type n) \
2291 char c[sizeof(type)]; \
2297 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2298 n += (u.c[i] & 0xFF) << s; \
2303 #if defined(HAS_HTOVS) && !defined(htovs)
2306 #if defined(HAS_HTOVL) && !defined(htovl)
2309 #if defined(HAS_VTOHS) && !defined(vtohs)
2312 #if defined(HAS_VTOHL) && !defined(vtohl)
2316 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2317 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2319 Perl_my_popen(pTHX_ char *cmd, char *mode)
2322 register I32 This, that;
2325 I32 doexec = strNE(cmd,"-");
2329 PERL_FLUSHALL_FOR_CHILD;
2332 return my_syspopen(aTHX_ cmd,mode);
2335 This = (*mode == 'w');
2337 if (doexec && PL_tainting) {
2339 taint_proper("Insecure %s%s", "EXEC");
2341 if (PerlProc_pipe(p) < 0)
2343 if (doexec && PerlProc_pipe(pp) >= 0)
2345 while ((pid = (doexec?vfork():fork())) < 0) {
2346 if (errno != EAGAIN) {
2347 PerlLIO_close(p[This]);
2349 PerlLIO_close(pp[0]);
2350 PerlLIO_close(pp[1]);
2353 Perl_croak(aTHX_ "Can't fork");
2365 PerlLIO_close(p[THAT]);
2367 PerlLIO_close(pp[0]);
2368 #if defined(HAS_FCNTL) && defined(F_SETFD)
2369 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2372 if (p[THIS] != (*mode == 'r')) {
2373 PerlLIO_dup2(p[THIS], *mode == 'r');
2374 PerlLIO_close(p[THIS]);
2378 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2384 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2388 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2391 #endif /* defined OS2 */
2393 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2394 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2396 hv_clear(PL_pidstatus); /* we have no children */
2401 do_execfree(); /* free any memory malloced by child on vfork */
2402 PerlLIO_close(p[that]);
2404 PerlLIO_close(pp[1]);
2405 if (p[that] < p[This]) {
2406 PerlLIO_dup2(p[This], p[that]);
2407 PerlLIO_close(p[This]);
2411 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2413 (void)SvUPGRADE(sv,SVt_IV);
2415 PL_forkprocess = pid;
2416 if (did_pipes && pid > 0) {
2420 while (n < sizeof(int)) {
2421 n1 = PerlLIO_read(pp[0],
2422 (void*)(((char*)&errkid)+n),
2428 PerlLIO_close(pp[0]);
2430 if (n) { /* Error */
2431 if (n != sizeof(int))
2432 Perl_croak(aTHX_ "panic: kid popen errno read");
2433 errno = errkid; /* Propagate errno from kid */
2438 PerlLIO_close(pp[0]);
2439 return PerlIO_fdopen(p[This], mode);
2442 #if defined(atarist) || defined(DJGPP)
2445 Perl_my_popen(pTHX_ char *cmd, char *mode)
2447 /* Needs work for PerlIO ! */
2448 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2449 PERL_FLUSHALL_FOR_CHILD;
2450 return popen(PerlIO_exportFILE(cmd, 0), mode);
2454 #endif /* !DOSISH */
2458 Perl_dump_fds(pTHX_ char *s)
2461 struct stat tmpstatbuf;
2463 PerlIO_printf(Perl_debug_log,"%s", s);
2464 for (fd = 0; fd < 32; fd++) {
2465 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2466 PerlIO_printf(Perl_debug_log," %d",fd);
2468 PerlIO_printf(Perl_debug_log,"\n");
2470 #endif /* DUMP_FDS */
2474 dup2(int oldfd, int newfd)
2476 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2479 PerlLIO_close(newfd);
2480 return fcntl(oldfd, F_DUPFD, newfd);
2482 #define DUP2_MAX_FDS 256
2483 int fdtmp[DUP2_MAX_FDS];
2489 PerlLIO_close(newfd);
2490 /* good enough for low fd's... */
2491 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2492 if (fdx >= DUP2_MAX_FDS) {
2500 PerlLIO_close(fdtmp[--fdx]);
2507 #ifdef HAS_SIGACTION
2510 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2512 struct sigaction act, oact;
2514 act.sa_handler = handler;
2515 sigemptyset(&act.sa_mask);
2518 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2521 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2522 act.sa_flags |= SA_NOCLDWAIT;
2524 if (sigaction(signo, &act, &oact) == -1)
2527 return oact.sa_handler;
2531 Perl_rsignal_state(pTHX_ int signo)
2533 struct sigaction oact;
2535 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2538 return oact.sa_handler;
2542 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2544 struct sigaction act;
2546 act.sa_handler = handler;
2547 sigemptyset(&act.sa_mask);
2550 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2553 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2554 act.sa_flags |= SA_NOCLDWAIT;
2556 return sigaction(signo, &act, save);
2560 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2562 return sigaction(signo, save, (struct sigaction *)NULL);
2565 #else /* !HAS_SIGACTION */
2568 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2570 return PerlProc_signal(signo, handler);
2573 static int sig_trapped;
2583 Perl_rsignal_state(pTHX_ int signo)
2585 Sighandler_t oldsig;
2588 oldsig = PerlProc_signal(signo, sig_trap);
2589 PerlProc_signal(signo, oldsig);
2591 PerlProc_kill(PerlProc_getpid(), signo);
2596 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2598 *save = PerlProc_signal(signo, handler);
2599 return (*save == SIG_ERR) ? -1 : 0;
2603 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2605 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2608 #endif /* !HAS_SIGACTION */
2609 #endif /* !PERL_MICRO */
2611 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2612 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2614 Perl_my_pclose(pTHX_ PerlIO *ptr)
2616 Sigsave_t hstat, istat, qstat;
2624 int saved_vaxc_errno;
2627 int saved_win32_errno;
2631 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2635 *svp = &PL_sv_undef;
2637 if (pid == -1) { /* Opened by popen. */
2638 return my_syspclose(ptr);
2641 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2642 saved_errno = errno;
2644 saved_vaxc_errno = vaxc$errno;
2647 saved_win32_errno = GetLastError();
2651 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2654 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2655 rsignal_save(SIGINT, SIG_IGN, &istat);
2656 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2659 pid2 = wait4pid(pid, &status, 0);
2660 } while (pid2 == -1 && errno == EINTR);
2662 rsignal_restore(SIGHUP, &hstat);
2663 rsignal_restore(SIGINT, &istat);
2664 rsignal_restore(SIGQUIT, &qstat);
2667 SETERRNO(saved_errno, saved_vaxc_errno);
2670 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2672 #endif /* !DOSISH */
2674 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2676 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2680 char spid[TYPE_CHARS(int)];
2684 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2686 sprintf(spid, "%"IVdf, (IV)pid);
2687 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2688 if (svp && *svp != &PL_sv_undef) {
2689 *statusp = SvIVX(*svp);
2690 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2697 hv_iterinit(PL_pidstatus);
2698 if ((entry = hv_iternext(PL_pidstatus))) {
2699 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2700 sv = hv_iterval(PL_pidstatus,entry);
2701 *statusp = SvIVX(sv);
2702 sprintf(spid, "%"IVdf, (IV)pid);
2703 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2709 # ifdef HAS_WAITPID_RUNTIME
2710 if (!HAS_WAITPID_RUNTIME)
2713 return PerlProc_waitpid(pid,statusp,flags);
2715 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2716 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2718 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2723 Perl_croak(aTHX_ "Can't do waitpid with flags");
2725 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2726 pidgone(result,*statusp);
2734 #endif /* !DOSISH || OS2 || WIN32 */
2738 Perl_pidgone(pTHX_ Pid_t pid, int status)
2741 char spid[TYPE_CHARS(int)];
2743 sprintf(spid, "%"IVdf, (IV)pid);
2744 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2745 (void)SvUPGRADE(sv,SVt_IV);
2750 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2753 int /* Cannot prototype with I32
2755 my_syspclose(PerlIO *ptr)
2758 Perl_my_pclose(pTHX_ PerlIO *ptr)
2761 /* Needs work for PerlIO ! */
2762 FILE *f = PerlIO_findFILE(ptr);
2763 I32 result = pclose(f);
2765 result = (result << 8) & 0xff00;
2767 PerlIO_releaseFILE(ptr,f);
2773 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2776 register const char *frombase = from;
2779 register const char c = *from;
2784 while (count-- > 0) {
2785 for (todo = len; todo > 0; todo--) {
2793 Perl_cast_ulong(pTHX_ NV f)
2798 # define BIGDOUBLE 2147483648.0
2800 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2803 return (unsigned long)f;
2805 return (unsigned long)along;
2809 /* Unfortunately, on some systems the cast_uv() function doesn't
2810 work with the system-supplied definition of ULONG_MAX. The
2811 comparison (f >= ULONG_MAX) always comes out true. It must be a
2812 problem with the compiler constant folding.
2814 In any case, this workaround should be fine on any two's complement
2815 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2817 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2820 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2822 -- Kenneth Albanowski <kjahds@kjahds.com>
2826 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2830 Perl_cast_i32(pTHX_ NV f)
2833 return (I32) I32_MAX;
2835 return (I32) I32_MIN;
2840 Perl_cast_iv(pTHX_ NV f)
2845 if (f >= (NV)UV_MAX)
2856 Perl_cast_uv(pTHX_ NV f)
2859 return (UV) MY_UV_MAX;
2873 Perl_same_dirent(pTHX_ char *a, char *b)
2875 char *fa = strrchr(a,'/');
2876 char *fb = strrchr(b,'/');
2877 struct stat tmpstatbuf1;
2878 struct stat tmpstatbuf2;
2879 SV *tmpsv = sv_newmortal();
2892 sv_setpv(tmpsv, ".");
2894 sv_setpvn(tmpsv, a, fa - a);
2895 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2898 sv_setpv(tmpsv, ".");
2900 sv_setpvn(tmpsv, b, fb - b);
2901 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2903 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2904 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2906 #endif /* !HAS_RENAME */
2909 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2911 register char *s = start;
2912 register NV rnv = 0.0;
2913 register UV ruv = 0;
2914 register bool seenb = FALSE;
2915 register bool overflowed = FALSE;
2917 for (; len-- && *s; s++) {
2918 if (!(*s == '0' || *s == '1')) {
2919 if (*s == '_' && len && *retlen
2920 && (s[1] == '0' || s[1] == '1'))
2925 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
2926 /* Disallow 0bbb0b0bbb... */
2932 if (ckWARN(WARN_DIGIT))
2933 Perl_warner(aTHX_ WARN_DIGIT,
2934 "Illegal binary digit '%c' ignored", *s);
2939 register UV xuv = ruv << 1;
2941 if ((xuv >> 1) != ruv) {
2945 if (ckWARN_d(WARN_OVERFLOW))
2946 Perl_warner(aTHX_ WARN_OVERFLOW,
2947 "Integer overflow in binary number");
2950 ruv = xuv | (*s - '0');
2954 /* If an NV has not enough bits in its mantissa to
2955 * represent an UV this summing of small low-order numbers
2956 * is a waste of time (because the NV cannot preserve
2957 * the low-order bits anyway): we could just remember when
2958 * did we overflow and in the end just multiply rnv by the
2965 if ( ( overflowed && rnv > 4294967295.0)
2967 || (!overflowed && ruv > 0xffffffff )
2971 if (ckWARN(WARN_PORTABLE))
2972 Perl_warner(aTHX_ WARN_PORTABLE,
2973 "Binary number > 0b11111111111111111111111111111111 non-portable");
2975 *retlen = s - start;
2980 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2982 register char *s = start;
2983 register NV rnv = 0.0;
2984 register UV ruv = 0;
2985 register bool overflowed = FALSE;
2987 for (; len-- && *s; s++) {
2988 if (!(*s >= '0' && *s <= '7')) {
2989 if (*s == '_' && len && *retlen
2990 && (s[1] >= '0' && s[1] <= '7'))
2996 /* Allow \octal to work the DWIM way (that is, stop scanning
2997 * as soon as non-octal characters are seen, complain only iff
2998 * someone seems to want to use the digits eight and nine). */
2999 if (*s == '8' || *s == '9') {
3001 if (ckWARN(WARN_DIGIT))
3002 Perl_warner(aTHX_ WARN_DIGIT,
3003 "Illegal octal digit '%c' ignored", *s);
3009 register UV xuv = ruv << 3;
3011 if ((xuv >> 3) != ruv) {
3015 if (ckWARN_d(WARN_OVERFLOW))
3016 Perl_warner(aTHX_ WARN_OVERFLOW,
3017 "Integer overflow in octal number");
3020 ruv = xuv | (*s - '0');
3024 /* If an NV has not enough bits in its mantissa to
3025 * represent an UV this summing of small low-order numbers
3026 * is a waste of time (because the NV cannot preserve
3027 * the low-order bits anyway): we could just remember when
3028 * did we overflow and in the end just multiply rnv by the
3029 * right amount of 8-tuples. */
3030 rnv += (NV)(*s - '0');
3035 if ( ( overflowed && rnv > 4294967295.0)
3037 || (!overflowed && ruv > 0xffffffff )
3041 if (ckWARN(WARN_PORTABLE))
3042 Perl_warner(aTHX_ WARN_PORTABLE,
3043 "Octal number > 037777777777 non-portable");
3045 *retlen = s - start;
3050 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
3052 register char *s = start;
3053 register NV rnv = 0.0;
3054 register UV ruv = 0;
3055 register bool seenx = FALSE;
3056 register bool overflowed = FALSE;
3059 for (; len-- && *s; s++) {
3060 hexdigit = strchr((char *) PL_hexdigit, *s);
3062 if (*s == '_' && len && *retlen && s[1]
3063 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3068 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
3069 /* Disallow 0xxx0x0xxx... */
3075 if (ckWARN(WARN_DIGIT))
3076 Perl_warner(aTHX_ WARN_DIGIT,
3077 "Illegal hexadecimal digit '%c' ignored", *s);
3082 register UV xuv = ruv << 4;
3084 if ((xuv >> 4) != ruv) {
3088 if (ckWARN_d(WARN_OVERFLOW))
3089 Perl_warner(aTHX_ WARN_OVERFLOW,
3090 "Integer overflow in hexadecimal number");
3093 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3097 /* If an NV has not enough bits in its mantissa to
3098 * represent an UV this summing of small low-order numbers
3099 * is a waste of time (because the NV cannot preserve
3100 * the low-order bits anyway): we could just remember when
3101 * did we overflow and in the end just multiply rnv by the
3102 * right amount of 16-tuples. */
3103 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3108 if ( ( overflowed && rnv > 4294967295.0)
3110 || (!overflowed && ruv > 0xffffffff )
3114 if (ckWARN(WARN_PORTABLE))
3115 Perl_warner(aTHX_ WARN_PORTABLE,
3116 "Hexadecimal number > 0xffffffff non-portable");
3118 *retlen = s - start;
3123 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3126 char *xfound = Nullch;
3127 char *xfailed = Nullch;
3128 char tmpbuf[MAXPATHLEN];
3132 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3133 # define SEARCH_EXTS ".bat", ".cmd", NULL
3134 # define MAX_EXT_LEN 4
3137 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3138 # define MAX_EXT_LEN 4
3141 # define SEARCH_EXTS ".pl", ".com", NULL
3142 # define MAX_EXT_LEN 4
3144 /* additional extensions to try in each dir if scriptname not found */
3146 char *exts[] = { SEARCH_EXTS };
3147 char **ext = search_ext ? search_ext : exts;
3148 int extidx = 0, i = 0;
3149 char *curext = Nullch;
3151 # define MAX_EXT_LEN 0
3155 * If dosearch is true and if scriptname does not contain path
3156 * delimiters, search the PATH for scriptname.
3158 * If SEARCH_EXTS is also defined, will look for each
3159 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3160 * while searching the PATH.
3162 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3163 * proceeds as follows:
3164 * If DOSISH or VMSISH:
3165 * + look for ./scriptname{,.foo,.bar}
3166 * + search the PATH for scriptname{,.foo,.bar}
3169 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3170 * this will not look in '.' if it's not in the PATH)
3175 # ifdef ALWAYS_DEFTYPES
3176 len = strlen(scriptname);
3177 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3178 int hasdir, idx = 0, deftypes = 1;
3181 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3184 int hasdir, idx = 0, deftypes = 1;
3187 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3189 /* The first time through, just add SEARCH_EXTS to whatever we
3190 * already have, so we can check for default file types. */
3192 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3198 if ((strlen(tmpbuf) + strlen(scriptname)
3199 + MAX_EXT_LEN) >= sizeof tmpbuf)
3200 continue; /* don't search dir with too-long name */
3201 strcat(tmpbuf, scriptname);
3205 if (strEQ(scriptname, "-"))
3207 if (dosearch) { /* Look in '.' first. */
3208 char *cur = scriptname;
3210 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3212 if (strEQ(ext[i++],curext)) {
3213 extidx = -1; /* already has an ext */
3218 DEBUG_p(PerlIO_printf(Perl_debug_log,
3219 "Looking for %s\n",cur));
3220 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3221 && !S_ISDIR(PL_statbuf.st_mode)) {
3229 if (cur == scriptname) {
3230 len = strlen(scriptname);
3231 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3233 cur = strcpy(tmpbuf, scriptname);
3235 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3236 && strcpy(tmpbuf+len, ext[extidx++]));
3241 #ifdef MACOS_TRADITIONAL
3242 if (dosearch && !strchr(scriptname, ':') &&
3243 (s = PerlEnv_getenv("Commands")))
3245 if (dosearch && !strchr(scriptname, '/')
3247 && !strchr(scriptname, '\\')
3249 && (s = PerlEnv_getenv("PATH")))
3254 PL_bufend = s + strlen(s);
3255 while (s < PL_bufend) {
3256 #ifdef MACOS_TRADITIONAL
3257 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3261 #if defined(atarist) || defined(DOSISH)
3266 && *s != ';'; len++, s++) {
3267 if (len < sizeof tmpbuf)
3270 if (len < sizeof tmpbuf)
3272 #else /* ! (atarist || DOSISH) */
3273 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3276 #endif /* ! (atarist || DOSISH) */
3277 #endif /* MACOS_TRADITIONAL */
3280 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3281 continue; /* don't search dir with too-long name */
3282 #ifdef MACOS_TRADITIONAL
3283 if (len && tmpbuf[len - 1] != ':')
3284 tmpbuf[len++] = ':';
3287 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3288 && tmpbuf[len - 1] != '/'
3289 && tmpbuf[len - 1] != '\\'
3292 tmpbuf[len++] = '/';
3293 if (len == 2 && tmpbuf[0] == '.')
3296 (void)strcpy(tmpbuf + len, scriptname);
3300 len = strlen(tmpbuf);
3301 if (extidx > 0) /* reset after previous loop */
3305 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3306 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3307 if (S_ISDIR(PL_statbuf.st_mode)) {
3311 } while ( retval < 0 /* not there */
3312 && extidx>=0 && ext[extidx] /* try an extension? */
3313 && strcpy(tmpbuf+len, ext[extidx++])
3318 if (S_ISREG(PL_statbuf.st_mode)
3319 && cando(S_IRUSR,TRUE,&PL_statbuf)
3320 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3321 && cando(S_IXUSR,TRUE,&PL_statbuf)
3325 xfound = tmpbuf; /* bingo! */
3329 xfailed = savepv(tmpbuf);
3332 if (!xfound && !seen_dot && !xfailed &&
3333 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3334 || S_ISDIR(PL_statbuf.st_mode)))
3336 seen_dot = 1; /* Disable message. */
3338 if (flags & 1) { /* do or die? */
3339 Perl_croak(aTHX_ "Can't %s %s%s%s",
3340 (xfailed ? "execute" : "find"),
3341 (xfailed ? xfailed : scriptname),
3342 (xfailed ? "" : " on PATH"),
3343 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3345 scriptname = Nullch;
3349 scriptname = xfound;
3351 return (scriptname ? savepv(scriptname) : Nullch);
3354 #ifndef PERL_GET_CONTEXT_DEFINED
3357 Perl_get_context(void)
3359 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3360 # ifdef OLD_PTHREADS_API
3362 if (pthread_getspecific(PL_thr_key, &t))
3363 Perl_croak_nocontext("panic: pthread_getspecific");
3366 # ifdef I_MACH_CTHREADS
3367 return (void*)cthread_data(cthread_self());
3369 return (void*)pthread_getspecific(PL_thr_key);
3378 Perl_set_context(void *t)
3380 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3381 # ifdef I_MACH_CTHREADS
3382 cthread_set_data(cthread_self(), t);
3384 if (pthread_setspecific(PL_thr_key, t))
3385 Perl_croak_nocontext("panic: pthread_setspecific");
3390 #endif /* !PERL_GET_CONTEXT_DEFINED */
3395 /* Very simplistic scheduler for now */
3399 thr = thr->i.next_run;
3403 Perl_cond_init(pTHX_ perl_cond *cp)
3409 Perl_cond_signal(pTHX_ perl_cond *cp)
3412 perl_cond cond = *cp;
3417 /* Insert t in the runnable queue just ahead of us */
3418 t->i.next_run = thr->i.next_run;
3419 thr->i.next_run->i.prev_run = t;
3420 t->i.prev_run = thr;
3421 thr->i.next_run = t;
3422 thr->i.wait_queue = 0;
3423 /* Remove from the wait queue */
3429 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3432 perl_cond cond, cond_next;
3434 for (cond = *cp; cond; cond = cond_next) {
3436 /* Insert t in the runnable queue just ahead of us */
3437 t->i.next_run = thr->i.next_run;
3438 thr->i.next_run->i.prev_run = t;
3439 t->i.prev_run = thr;
3440 thr->i.next_run = t;
3441 thr->i.wait_queue = 0;
3442 /* Remove from the wait queue */
3443 cond_next = cond->next;
3450 Perl_cond_wait(pTHX_ perl_cond *cp)
3454 if (thr->i.next_run == thr)
3455 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3457 New(666, cond, 1, struct perl_wait_queue);
3461 thr->i.wait_queue = cond;
3462 /* Remove ourselves from runnable queue */
3463 thr->i.next_run->i.prev_run = thr->i.prev_run;
3464 thr->i.prev_run->i.next_run = thr->i.next_run;
3466 #endif /* FAKE_THREADS */
3469 Perl_condpair_magic(pTHX_ SV *sv)
3473 SvUPGRADE(sv, SVt_PVMG);
3474 mg = mg_find(sv, 'm');
3478 New(53, cp, 1, condpair_t);
3479 MUTEX_INIT(&cp->mutex);
3480 COND_INIT(&cp->owner_cond);
3481 COND_INIT(&cp->cond);
3483 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3484 mg = mg_find(sv, 'm');
3486 /* someone else beat us to initialising it */
3487 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3488 MUTEX_DESTROY(&cp->mutex);
3489 COND_DESTROY(&cp->owner_cond);
3490 COND_DESTROY(&cp->cond);
3494 sv_magic(sv, Nullsv, 'm', 0, 0);
3496 mg->mg_ptr = (char *)cp;
3497 mg->mg_len = sizeof(cp);
3498 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3499 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3500 "%p: condpair_magic %p\n", thr, sv));)
3507 Perl_sv_lock(pTHX_ SV *osv)
3517 mg = condpair_magic(sv);
3518 MUTEX_LOCK(MgMUTEXP(mg));
3519 if (MgOWNER(mg) == thr)
3520 MUTEX_UNLOCK(MgMUTEXP(mg));
3523 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3525 DEBUG_S(PerlIO_printf(Perl_debug_log,
3526 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3527 PTR2UV(thr), PTR2UV(sv));)
3528 MUTEX_UNLOCK(MgMUTEXP(mg));
3529 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3531 UNLOCK_SV_LOCK_MUTEX;
3536 * Make a new perl thread structure using t as a prototype. Some of the
3537 * fields for the new thread are copied from the prototype thread, t,
3538 * so t should not be running in perl at the time this function is
3539 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3540 * thread calling new_struct_thread) clearly satisfies this constraint.
3542 struct perl_thread *
3543 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3545 #if !defined(PERL_IMPLICIT_CONTEXT)
3546 struct perl_thread *thr;
3552 sv = newSVpvn("", 0);
3553 SvGROW(sv, sizeof(struct perl_thread) + 1);
3554 SvCUR_set(sv, sizeof(struct perl_thread));
3555 thr = (Thread) SvPVX(sv);
3557 memset(thr, 0xab, sizeof(struct perl_thread));
3564 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3566 Zero(thr, 1, struct perl_thread);
3572 PL_curcop = &PL_compiling;
3573 thr->interp = t->interp;
3574 thr->cvcache = newHV();
3575 thr->threadsv = newAV();
3576 thr->specific = newAV();
3577 thr->errsv = newSVpvn("", 0);
3578 thr->flags = THRf_R_JOINABLE;
3579 MUTEX_INIT(&thr->mutex);
3583 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3586 PL_statname = NEWSV(66,0);
3587 PL_errors = newSVpvn("", 0);
3589 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3590 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3591 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3592 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3593 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3595 PL_reginterp_cnt = 0;
3596 PL_lastscream = Nullsv;
3599 PL_reg_start_tmp = 0;
3600 PL_reg_start_tmpl = 0;
3601 PL_reg_poscache = Nullch;
3603 /* parent thread's data needs to be locked while we make copy */
3604 MUTEX_LOCK(&t->mutex);
3606 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3607 PL_protect = t->Tprotect;
3610 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3611 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3612 PL_curstash = t->Tcurstash; /* always be set to main? */
3614 PL_tainted = t->Ttainted;
3615 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3616 PL_nrs = newSVsv(t->Tnrs);
3617 PL_rs = SvREFCNT_inc(PL_nrs);
3618 PL_last_in_gv = Nullgv;
3619 PL_ofslen = t->Tofslen;
3620 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3621 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3622 PL_chopset = t->Tchopset;
3623 PL_bodytarget = newSVsv(t->Tbodytarget);
3624 PL_toptarget = newSVsv(t->Ttoptarget);
3625 if (t->Tformtarget == t->Ttoptarget)
3626 PL_formtarget = PL_toptarget;
3628 PL_formtarget = PL_bodytarget;
3630 /* Initialise all per-thread SVs that the template thread used */
3631 svp = AvARRAY(t->threadsv);
3632 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3633 if (*svp && *svp != &PL_sv_undef) {
3634 SV *sv = newSVsv(*svp);
3635 av_store(thr->threadsv, i, sv);
3636 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3637 DEBUG_S(PerlIO_printf(Perl_debug_log,
3638 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3642 thr->threadsvp = AvARRAY(thr->threadsv);
3644 MUTEX_LOCK(&PL_threads_mutex);
3646 thr->tid = ++PL_threadnum;
3647 thr->next = t->next;
3650 thr->next->prev = thr;
3651 MUTEX_UNLOCK(&PL_threads_mutex);
3653 /* done copying parent's state */
3654 MUTEX_UNLOCK(&t->mutex);
3656 #ifdef HAVE_THREAD_INTERN
3657 Perl_init_thread_intern(thr);
3658 #endif /* HAVE_THREAD_INTERN */
3661 #endif /* USE_THREADS */
3663 #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
3665 * This hack is to force load of "huge" support from libm.a
3666 * So it is in perl for (say) POSIX to use.
3667 * Needed for SunOS with Sun's 'acc' for example.
3672 # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3679 #ifdef PERL_GLOBAL_STRUCT
3688 Perl_get_op_names(pTHX)
3694 Perl_get_op_descs(pTHX)
3700 Perl_get_no_modify(pTHX)
3702 return (char*)PL_no_modify;
3706 Perl_get_opargs(pTHX)
3712 Perl_get_ppaddr(pTHX)
3714 return (PPADDR_t*)PL_ppaddr;
3717 #ifndef HAS_GETENV_LEN
3719 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3721 char *env_trans = PerlEnv_getenv(env_elem);
3723 *len = strlen(env_trans);
3730 Perl_get_vtbl(pTHX_ int vtbl_id)
3732 MGVTBL* result = Null(MGVTBL*);
3736 result = &PL_vtbl_sv;
3739 result = &PL_vtbl_env;
3741 case want_vtbl_envelem:
3742 result = &PL_vtbl_envelem;
3745 result = &PL_vtbl_sig;
3747 case want_vtbl_sigelem:
3748 result = &PL_vtbl_sigelem;
3750 case want_vtbl_pack:
3751 result = &PL_vtbl_pack;
3753 case want_vtbl_packelem:
3754 result = &PL_vtbl_packelem;
3756 case want_vtbl_dbline:
3757 result = &PL_vtbl_dbline;
3760 result = &PL_vtbl_isa;
3762 case want_vtbl_isaelem:
3763 result = &PL_vtbl_isaelem;
3765 case want_vtbl_arylen:
3766 result = &PL_vtbl_arylen;
3768 case want_vtbl_glob:
3769 result = &PL_vtbl_glob;
3771 case want_vtbl_mglob:
3772 result = &PL_vtbl_mglob;
3774 case want_vtbl_nkeys:
3775 result = &PL_vtbl_nkeys;
3777 case want_vtbl_taint:
3778 result = &PL_vtbl_taint;
3780 case want_vtbl_substr:
3781 result = &PL_vtbl_substr;
3784 result = &PL_vtbl_vec;
3787 result = &PL_vtbl_pos;
3790 result = &PL_vtbl_bm;
3793 result = &PL_vtbl_fm;
3795 case want_vtbl_uvar:
3796 result = &PL_vtbl_uvar;
3799 case want_vtbl_mutex:
3800 result = &PL_vtbl_mutex;
3803 case want_vtbl_defelem:
3804 result = &PL_vtbl_defelem;
3806 case want_vtbl_regexp:
3807 result = &PL_vtbl_regexp;
3809 case want_vtbl_regdata:
3810 result = &PL_vtbl_regdata;
3812 case want_vtbl_regdatum:
3813 result = &PL_vtbl_regdatum;
3815 #ifdef USE_LOCALE_COLLATE
3816 case want_vtbl_collxfrm:
3817 result = &PL_vtbl_collxfrm;
3820 case want_vtbl_amagic:
3821 result = &PL_vtbl_amagic;
3823 case want_vtbl_amagicelem:
3824 result = &PL_vtbl_amagicelem;
3826 case want_vtbl_backref:
3827 result = &PL_vtbl_backref;
3834 Perl_my_fflush_all(pTHX)
3837 return PerlIO_flush(NULL);
3840 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3841 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3842 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3844 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3845 open_max = sysconf(_SC_OPEN_MAX);
3848 open_max = FOPEN_MAX;
3851 open_max = OPEN_MAX;
3862 for (i = 0; i < open_max; i++)
3863 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3864 STDIO_STREAM_ARRAY[i]._file < open_max &&
3865 STDIO_STREAM_ARRAY[i]._flag)
3866 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3870 SETERRNO(EBADF,RMS$_IFI);
3876 Perl_my_atof(pTHX_ const char* s)
3879 #ifdef USE_LOCALE_NUMERIC
3880 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3884 SET_NUMERIC_STANDARD();
3886 SET_NUMERIC_LOCAL();
3887 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3899 Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3904 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3905 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
3907 char *pars = OP_IS_FILETEST(op) ? "" : "()";
3908 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
3909 "socket" : "filehandle";
3912 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
3914 warn_type = WARN_CLOSED;
3918 warn_type = WARN_UNOPENED;
3921 if (gv && isGV(gv)) {
3922 SV *sv = sv_newmortal();
3923 gv_efullname4(sv, gv, Nullch, FALSE);
3927 if (name && *name) {
3928 Perl_warner(aTHX_ warn_type,
3929 "%s%s on %s %s %s", func, pars, vile, type, name);
3930 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3931 Perl_warner(aTHX_ warn_type,
3932 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3936 Perl_warner(aTHX_ warn_type,
3937 "%s%s on %s %s", func, pars, vile, type);
3938 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3939 Perl_warner(aTHX_ warn_type,
3940 "\t(Are you trying to call %s%s on dirhandle?)\n",