3 * Copyright (c) 1991-1999, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
16 #define PERL_IN_UTIL_C
19 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
24 # define SIG_ERR ((Sighandler_t) -1)
27 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
36 /* Put this after #includes because fork and vfork prototypes may
47 # include <sys/file.h>
51 # include <sys/wait.h>
58 long xcount[MAXXCOUNT];
59 long lastxcount[MAXXCOUNT];
60 long xycount[MAXXCOUNT][MAXYCOUNT];
61 long lastxycount[MAXXCOUNT][MAXYCOUNT];
65 /* paranoid version of system's malloc() */
67 /* NOTE: Do not call the next three routines directly. Use the macros
68 * in handy.h, so that we can easily redefine everything to do tracking of
69 * allocated hunks back to the original New to track down any memory leaks.
70 * XXX This advice seems to be widely ignored :-( --AD August 1996.
74 Perl_safesysmalloc(MEM_SIZE size)
79 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
82 #endif /* HAS_64K_LIMIT */
85 Perl_croak_nocontext("panic: malloc");
87 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
88 #if !(defined(I286) || defined(atarist))
89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
98 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
105 /* paranoid version of system's realloc() */
108 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
111 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
112 Malloc_t PerlMem_realloc();
113 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
117 PerlIO_printf(PerlIO_stderr(),
118 "Reallocation too large: %lx\n", size) FLUSH;
119 WITH_THX(my_exit(1));
121 #endif /* HAS_64K_LIMIT */
128 return safesysmalloc(size);
131 Perl_croak_nocontext("panic: realloc");
133 ptr = PerlMem_realloc(where,size);
135 #if !(defined(I286) || defined(atarist))
137 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
138 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
142 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++);
143 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
152 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
153 WITH_THX(my_exit(1));
159 /* safe version of system's free() */
162 Perl_safesysfree(Malloc_t where)
164 #if !(defined(I286) || defined(atarist))
165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
167 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
175 /* safe version of system's calloc() */
178 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
183 if (size * count > 0xffff) {
184 PerlIO_printf(PerlIO_stderr(),
185 "Allocation too large: %lx\n", size * count) FLUSH;
186 WITH_THX(my_exit(1));
188 #endif /* HAS_64K_LIMIT */
190 if ((long)size < 0 || (long)count < 0)
191 Perl_croak_nocontext("panic: calloc");
194 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
195 #if !(defined(I286) || defined(atarist))
196 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
198 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
201 memset((void*)ptr, 0, size);
207 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
208 WITH_THX(my_exit(1));
216 struct mem_test_strut {
224 # define ALIGN sizeof(struct mem_test_strut)
226 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
227 # define typeof_chunk(ch) \
228 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
229 # define set_typeof_chunk(ch,t) \
230 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
231 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
234 ? ((size) - 1)/8 + 5 \
238 Perl_safexmalloc(I32 x, MEM_SIZE size)
240 register char* where = (char*)safemalloc(size + ALIGN);
243 xycount[x][SIZE_TO_Y(size)]++;
244 set_typeof_chunk(where, x);
245 sizeof_chunk(where) = size;
246 return (Malloc_t)(where + ALIGN);
250 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
252 char *where = (char*)wh;
255 return safexmalloc(0,size);
258 MEM_SIZE old = sizeof_chunk(where - ALIGN);
259 int t = typeof_chunk(where - ALIGN);
260 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
262 xycount[t][SIZE_TO_Y(old)]--;
263 xycount[t][SIZE_TO_Y(size)]++;
264 xcount[t] += size - old;
265 sizeof_chunk(new) = size;
266 return (Malloc_t)(new + ALIGN);
271 Perl_safexfree(Malloc_t wh)
274 char *where = (char*)wh;
280 size = sizeof_chunk(where);
281 x = where[0] + 100 * where[1];
283 xycount[x][SIZE_TO_Y(size)]--;
288 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
290 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
292 xycount[x][SIZE_TO_Y(size)]++;
293 memset((void*)(where + ALIGN), 0, size * count);
294 set_typeof_chunk(where, x);
295 sizeof_chunk(where) = size;
296 return (Malloc_t)(where + ALIGN);
300 S_xstat(pTHX_ int flag)
302 register I32 i, j, total = 0;
303 I32 subtot[MAXYCOUNT];
305 for (j = 0; j < MAXYCOUNT; j++) {
309 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
310 for (i = 0; i < MAXXCOUNT; i++) {
312 for (j = 0; j < MAXYCOUNT; j++) {
313 subtot[j] += xycount[i][j];
316 ? xcount[i] /* Have something */
318 ? xcount[i] != lastxcount[i] /* Changed */
319 : xcount[i] > lastxcount[i])) { /* Growed */
320 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
321 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
322 lastxcount[i] = xcount[i];
323 for (j = 0; j < MAXYCOUNT; j++) {
325 ? xycount[i][j] /* Have something */
327 ? xycount[i][j] != lastxycount[i][j] /* Changed */
328 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
329 PerlIO_printf(PerlIO_stderr(),"%3ld ",
331 ? xycount[i][j] - lastxycount[i][j]
333 lastxycount[i][j] = xycount[i][j];
335 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
338 PerlIO_printf(PerlIO_stderr(), "\n");
342 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
343 for (j = 0; j < MAXYCOUNT; j++) {
345 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
347 PerlIO_printf(PerlIO_stderr(), " . ");
350 PerlIO_printf(PerlIO_stderr(), "\n");
354 #endif /* LEAKTEST */
356 /* copy a string up to some (non-backslashed) delimiter, if any */
359 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
362 for (tolen = 0; from < fromend; from++, tolen++) {
364 if (from[1] == delim)
373 else if (*from == delim)
384 /* return ptr to little string in big string, NULL if not found */
385 /* This routine was donated by Corey Satten. */
388 Perl_instr(pTHX_ register const char *big, register const char *little)
390 register const char *s, *x;
401 for (x=big,s=little; *s; /**/ ) {
410 return (char*)(big-1);
415 /* same as instr but allow embedded nulls */
418 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
420 register const char *s, *x;
421 register I32 first = *little;
422 register const char *littleend = lend;
424 if (!first && little >= littleend)
426 if (bigend - big < littleend - little)
428 bigend -= littleend - little++;
429 while (big <= bigend) {
432 for (x=big,s=little; s < littleend; /**/ ) {
439 return (char*)(big-1);
444 /* reverse of the above--find last substring */
447 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
449 register const char *bigbeg;
450 register const char *s, *x;
451 register I32 first = *little;
452 register const char *littleend = lend;
454 if (!first && little >= littleend)
455 return (char*)bigend;
457 big = bigend - (littleend - little++);
458 while (big >= bigbeg) {
461 for (x=big+2,s=little; s < littleend; /**/ ) {
468 return (char*)(big+1);
474 * Set up for a new ctype locale.
477 Perl_new_ctype(pTHX_ const char *newctype)
479 #ifdef USE_LOCALE_CTYPE
483 for (i = 0; i < 256; i++) {
485 PL_fold_locale[i] = toLOWER_LC(i);
486 else if (isLOWER_LC(i))
487 PL_fold_locale[i] = toUPPER_LC(i);
489 PL_fold_locale[i] = i;
492 #endif /* USE_LOCALE_CTYPE */
496 * Set up for a new collation locale.
499 Perl_new_collate(pTHX_ const char *newcoll)
501 #ifdef USE_LOCALE_COLLATE
504 if (PL_collation_name) {
506 Safefree(PL_collation_name);
507 PL_collation_name = NULL;
508 PL_collation_standard = TRUE;
509 PL_collxfrm_base = 0;
510 PL_collxfrm_mult = 2;
515 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
517 Safefree(PL_collation_name);
518 PL_collation_name = savepv(newcoll);
519 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
522 /* 2: at most so many chars ('a', 'b'). */
523 /* 50: surely no system expands a char more. */
524 #define XFRMBUFSIZE (2 * 50)
525 char xbuf[XFRMBUFSIZE];
526 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
527 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
528 SSize_t mult = fb - fa;
530 Perl_croak(aTHX_ "strxfrm() gets absurd");
531 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
532 PL_collxfrm_mult = mult;
536 #endif /* USE_LOCALE_COLLATE */
540 * Set up for a new numeric locale.
543 Perl_new_numeric(pTHX_ const char *newnum)
545 #ifdef USE_LOCALE_NUMERIC
548 if (PL_numeric_name) {
549 Safefree(PL_numeric_name);
550 PL_numeric_name = NULL;
551 PL_numeric_standard = TRUE;
552 PL_numeric_local = TRUE;
557 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
558 Safefree(PL_numeric_name);
559 PL_numeric_name = savepv(newnum);
560 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
561 PL_numeric_local = TRUE;
564 #endif /* USE_LOCALE_NUMERIC */
568 Perl_set_numeric_standard(pTHX)
570 #ifdef USE_LOCALE_NUMERIC
572 if (! PL_numeric_standard) {
573 setlocale(LC_NUMERIC, "C");
574 PL_numeric_standard = TRUE;
575 PL_numeric_local = FALSE;
578 #endif /* USE_LOCALE_NUMERIC */
582 Perl_set_numeric_local(pTHX)
584 #ifdef USE_LOCALE_NUMERIC
586 if (! PL_numeric_local) {
587 setlocale(LC_NUMERIC, PL_numeric_name);
588 PL_numeric_standard = FALSE;
589 PL_numeric_local = TRUE;
592 #endif /* USE_LOCALE_NUMERIC */
597 * Initialize locale awareness.
600 Perl_init_i18nl10n(pTHX_ int printwarn)
604 * 1 = set ok or not applicable,
605 * 0 = fallback to C locale,
606 * -1 = fallback to C locale failed
611 #ifdef USE_LOCALE_CTYPE
612 char *curctype = NULL;
613 #endif /* USE_LOCALE_CTYPE */
614 #ifdef USE_LOCALE_COLLATE
615 char *curcoll = NULL;
616 #endif /* USE_LOCALE_COLLATE */
617 #ifdef USE_LOCALE_NUMERIC
619 #endif /* USE_LOCALE_NUMERIC */
621 char *language = PerlEnv_getenv("LANGUAGE");
623 char *lc_all = PerlEnv_getenv("LC_ALL");
624 char *lang = PerlEnv_getenv("LANG");
625 bool setlocale_failure = FALSE;
627 #ifdef LOCALE_ENVIRON_REQUIRED
630 * Ultrix setlocale(..., "") fails if there are no environment
631 * variables from which to get a locale name.
638 if (setlocale(LC_ALL, ""))
641 setlocale_failure = TRUE;
643 if (!setlocale_failure) {
644 #ifdef USE_LOCALE_CTYPE
647 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
649 setlocale_failure = TRUE;
650 #endif /* USE_LOCALE_CTYPE */
651 #ifdef USE_LOCALE_COLLATE
653 setlocale(LC_COLLATE,
654 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
656 setlocale_failure = TRUE;
657 #endif /* USE_LOCALE_COLLATE */
658 #ifdef USE_LOCALE_NUMERIC
660 setlocale(LC_NUMERIC,
661 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
663 setlocale_failure = TRUE;
664 #endif /* USE_LOCALE_NUMERIC */
669 #endif /* !LOCALE_ENVIRON_REQUIRED */
672 if (! setlocale(LC_ALL, ""))
673 setlocale_failure = TRUE;
676 if (!setlocale_failure) {
677 #ifdef USE_LOCALE_CTYPE
678 if (! (curctype = setlocale(LC_CTYPE, "")))
679 setlocale_failure = TRUE;
680 #endif /* USE_LOCALE_CTYPE */
681 #ifdef USE_LOCALE_COLLATE
682 if (! (curcoll = setlocale(LC_COLLATE, "")))
683 setlocale_failure = TRUE;
684 #endif /* USE_LOCALE_COLLATE */
685 #ifdef USE_LOCALE_NUMERIC
686 if (! (curnum = setlocale(LC_NUMERIC, "")))
687 setlocale_failure = TRUE;
688 #endif /* USE_LOCALE_NUMERIC */
691 if (setlocale_failure) {
693 bool locwarn = (printwarn > 1 ||
695 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
700 PerlIO_printf(PerlIO_stderr(),
701 "perl: warning: Setting locale failed.\n");
705 PerlIO_printf(PerlIO_stderr(),
706 "perl: warning: Setting locale failed for the categories:\n\t");
707 #ifdef USE_LOCALE_CTYPE
709 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
710 #endif /* USE_LOCALE_CTYPE */
711 #ifdef USE_LOCALE_COLLATE
713 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
714 #endif /* USE_LOCALE_COLLATE */
715 #ifdef USE_LOCALE_NUMERIC
717 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
718 #endif /* USE_LOCALE_NUMERIC */
719 PerlIO_printf(PerlIO_stderr(), "\n");
723 PerlIO_printf(PerlIO_stderr(),
724 "perl: warning: Please check that your locale settings:\n");
727 PerlIO_printf(PerlIO_stderr(),
728 "\tLANGUAGE = %c%s%c,\n",
729 language ? '"' : '(',
730 language ? language : "unset",
731 language ? '"' : ')');
734 PerlIO_printf(PerlIO_stderr(),
735 "\tLC_ALL = %c%s%c,\n",
737 lc_all ? lc_all : "unset",
742 for (e = environ; *e; e++) {
743 if (strnEQ(*e, "LC_", 3)
744 && strnNE(*e, "LC_ALL=", 7)
745 && (p = strchr(*e, '=')))
746 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
747 (int)(p - *e), *e, p + 1);
751 PerlIO_printf(PerlIO_stderr(),
754 lang ? lang : "unset",
757 PerlIO_printf(PerlIO_stderr(),
758 " are supported and installed on your system.\n");
763 if (setlocale(LC_ALL, "C")) {
765 PerlIO_printf(PerlIO_stderr(),
766 "perl: warning: Falling back to the standard locale (\"C\").\n");
771 PerlIO_printf(PerlIO_stderr(),
772 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
779 #ifdef USE_LOCALE_CTYPE
780 || !(curctype || setlocale(LC_CTYPE, "C"))
781 #endif /* USE_LOCALE_CTYPE */
782 #ifdef USE_LOCALE_COLLATE
783 || !(curcoll || setlocale(LC_COLLATE, "C"))
784 #endif /* USE_LOCALE_COLLATE */
785 #ifdef USE_LOCALE_NUMERIC
786 || !(curnum || setlocale(LC_NUMERIC, "C"))
787 #endif /* USE_LOCALE_NUMERIC */
791 PerlIO_printf(PerlIO_stderr(),
792 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
796 #endif /* ! LC_ALL */
798 #ifdef USE_LOCALE_CTYPE
799 curctype = setlocale(LC_CTYPE, Nullch);
800 #endif /* USE_LOCALE_CTYPE */
801 #ifdef USE_LOCALE_COLLATE
802 curcoll = setlocale(LC_COLLATE, Nullch);
803 #endif /* USE_LOCALE_COLLATE */
804 #ifdef USE_LOCALE_NUMERIC
805 curnum = setlocale(LC_NUMERIC, Nullch);
806 #endif /* USE_LOCALE_NUMERIC */
809 #ifdef USE_LOCALE_CTYPE
811 #endif /* USE_LOCALE_CTYPE */
813 #ifdef USE_LOCALE_COLLATE
814 new_collate(curcoll);
815 #endif /* USE_LOCALE_COLLATE */
817 #ifdef USE_LOCALE_NUMERIC
819 #endif /* USE_LOCALE_NUMERIC */
821 #endif /* USE_LOCALE */
826 /* Backwards compatibility. */
828 Perl_init_i18nl14n(pTHX_ int printwarn)
830 return init_i18nl10n(printwarn);
833 #ifdef USE_LOCALE_COLLATE
836 * mem_collxfrm() is a bit like strxfrm() but with two important
837 * differences. First, it handles embedded NULs. Second, it allocates
838 * a bit more memory than needed for the transformed data itself.
839 * The real transformed data begins at offset sizeof(collationix).
840 * Please see sv_collxfrm() to see how this is used.
843 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
846 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
848 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
849 /* the +1 is for the terminating NUL. */
851 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
852 New(171, xbuf, xAlloc, char);
856 *(U32*)xbuf = PL_collation_ix;
857 xout = sizeof(PL_collation_ix);
858 for (xin = 0; xin < len; ) {
862 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
865 if (xused < xAlloc - xout)
867 xAlloc = (2 * xAlloc) + 1;
868 Renew(xbuf, xAlloc, char);
873 xin += strlen(s + xin) + 1;
876 /* Embedded NULs are understood but silently skipped
877 * because they make no sense in locale collation. */
881 *xlen = xout - sizeof(PL_collation_ix);
890 #endif /* USE_LOCALE_COLLATE */
892 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
894 /* As a space optimization, we do not compile tables for strings of length
895 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
896 special-cased in fbm_instr().
898 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
901 Perl_fbm_compile(pTHX_ SV *sv, U32 flags /* not used yet */)
910 if (flags & FBMcf_TAIL)
911 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
912 s = (U8*)SvPV_force(sv, len);
913 (void)SvUPGRADE(sv, SVt_PVBM);
914 if (len == 0) /* TAIL might be on on a zero-length string. */
922 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
923 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
924 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
925 for (i = 0; i < 256; i++) {
928 table[-1] = flags; /* Not used yet */
932 if (table[*s] == mlen)
937 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
940 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
941 for (i = 0; i < len; i++) {
942 if (PL_freq[s[i]] < frequency) {
944 frequency = PL_freq[s[i]];
947 BmRARE(sv) = s[rarest];
948 BmPREVIOUS(sv) = rarest;
949 BmUSEFUL(sv) = 100; /* Initial value */
950 if (flags & FBMcf_TAIL)
952 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
955 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
956 /* If SvTAIL is actually due to \Z or \z, this gives false positives
960 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
962 register unsigned char *s;
964 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
965 register STRLEN littlelen = l;
966 register I32 multiline = flags & FBMrf_MULTILINE;
968 if (bigend - big < littlelen) {
970 if ( SvTAIL(littlestr)
971 && (bigend - big == littlelen - 1)
973 || *big == *little && memEQ(big, little, littlelen - 1)))
978 if (littlelen <= 2) { /* Special-cased */
981 if (littlelen == 1) {
982 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
983 /* Know that bigend != big. */
984 if (bigend[-1] == '\n')
985 return (char *)(bigend - 1);
986 return (char *) bigend;
994 if (SvTAIL(littlestr))
995 return (char *) bigend;
999 return (char*)big; /* Cannot be SvTAIL! */
1001 /* littlelen is 2 */
1002 if (SvTAIL(littlestr) && !multiline) {
1003 if (bigend[-1] == '\n' && bigend[-2] == *little)
1004 return (char*)bigend - 2;
1005 if (bigend[-1] == *little)
1006 return (char*)bigend - 1;
1010 /* This should be better than FBM if c1 == c2, and almost
1011 as good otherwise: maybe better since we do less indirection.
1012 And we save a lot of memory by caching no table. */
1013 register unsigned char c1 = little[0];
1014 register unsigned char c2 = little[1];
1019 while (s <= bigend) {
1022 return (char*)s - 1;
1029 goto check_1char_anchor;
1040 goto check_1char_anchor;
1043 while (s <= bigend) {
1046 return (char*)s - 1;
1048 goto check_1char_anchor;
1057 check_1char_anchor: /* One char and anchor! */
1058 if (SvTAIL(littlestr) && (*bigend == *little))
1059 return (char *)bigend; /* bigend is already decremented. */
1062 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1063 s = bigend - littlelen;
1065 && bigend[-1] == '\n'
1067 /* Automatically of length > 2 */
1068 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1069 return (char*)s; /* how sweet it is */
1070 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1072 return (char*)s + 1; /* how sweet it is */
1075 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1076 char *b = ninstr((char*)big,(char*)bigend,
1077 (char*)little, (char*)little + littlelen);
1079 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1080 /* Chop \n from littlestr: */
1081 s = bigend - littlelen + 1;
1082 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1090 { /* Do actual FBM. */
1091 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1092 register unsigned char *oldlittle;
1094 if (littlelen > bigend - big)
1096 --littlelen; /* Last char found by table lookup */
1098 s = big + littlelen;
1099 little += littlelen; /* last char */
1106 if (tmp = table[*s]) {
1108 if (bigend - s > tmp) {
1114 if ((s += tmp) < bigend)
1119 else { /* less expensive than calling strncmp() */
1120 register unsigned char *olds = s;
1125 if (*--s == *--little)
1128 s = olds + 1; /* here we pay the price for failure */
1130 if (s < bigend) /* fake up continue to outer loop */
1138 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1139 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1140 return (char*)bigend - littlelen;
1145 /* start_shift, end_shift are positive quantities which give offsets
1146 of ends of some substring of bigstr.
1147 If `last' we want the last occurence.
1148 old_posp is the way of communication between consequent calls if
1149 the next call needs to find the .
1150 The initial *old_posp should be -1.
1152 Note that we take into account SvTAIL, so one can get extra
1153 optimizations if _ALL flag is set.
1156 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1157 if PL_multiline. In fact if !PL_multiline the autoritative answer
1158 is not supported yet. */
1161 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1164 register unsigned char *s, *x;
1165 register unsigned char *big;
1167 register I32 previous;
1169 register unsigned char *little;
1170 register I32 stop_pos;
1171 register unsigned char *littleend;
1175 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1176 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1178 if ( BmRARE(littlestr) == '\n'
1179 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1180 little = (unsigned char *)(SvPVX(littlestr));
1181 littleend = little + SvCUR(littlestr);
1188 little = (unsigned char *)(SvPVX(littlestr));
1189 littleend = little + SvCUR(littlestr);
1191 /* The value of pos we can start at: */
1192 previous = BmPREVIOUS(littlestr);
1193 big = (unsigned char *)(SvPVX(bigstr));
1194 /* The value of pos we can stop at: */
1195 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1196 if (previous + start_shift > stop_pos) {
1197 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1201 while (pos < previous + start_shift) {
1202 if (!(pos += PL_screamnext[pos]))
1207 if (pos >= stop_pos) break;
1208 if (big[pos-previous] != first)
1210 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1216 if (s == littleend) {
1218 if (!last) return (char *)(big+pos-previous);
1221 } while ( pos += PL_screamnext[pos] );
1222 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1223 #else /* !POINTERRIGOR */
1226 if (pos >= stop_pos) break;
1227 if (big[pos] != first)
1229 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1235 if (s == littleend) {
1237 if (!last) return (char *)(big+pos);
1240 } while ( pos += PL_screamnext[pos] );
1242 return (char *)(big+(*old_posp));
1243 #endif /* POINTERRIGOR */
1245 if (!SvTAIL(littlestr) || (end_shift > 0))
1247 /* Ignore the trailing "\n". This code is not microoptimized */
1248 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1249 stop_pos = littleend - little; /* Actual littlestr len */
1254 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1260 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1262 register U8 *a = (U8 *)s1;
1263 register U8 *b = (U8 *)s2;
1265 if (*a != *b && *a != PL_fold[*b])
1273 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1275 register U8 *a = (U8 *)s1;
1276 register U8 *b = (U8 *)s2;
1278 if (*a != *b && *a != PL_fold_locale[*b])
1285 /* copy a string to a safe spot */
1288 Perl_savepv(pTHX_ const char *sv)
1290 register char *newaddr;
1292 New(902,newaddr,strlen(sv)+1,char);
1293 (void)strcpy(newaddr,sv);
1297 /* same thing but with a known length */
1300 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1302 register char *newaddr;
1304 New(903,newaddr,len+1,char);
1305 Copy(sv,newaddr,len,char); /* might not be null terminated */
1306 newaddr[len] = '\0'; /* is now */
1310 /* the SV for Perl_form() and mess() is not kept in an arena */
1320 return sv_2mortal(newSVpvn("",0));
1325 /* Create as PVMG now, to avoid any upgrading later */
1326 New(905, sv, 1, SV);
1327 Newz(905, any, 1, XPVMG);
1328 SvFLAGS(sv) = SVt_PVMG;
1329 SvANY(sv) = (void*)any;
1330 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1335 #ifdef PERL_IMPLICIT_CONTEXT
1337 Perl_form_nocontext(const char* pat, ...)
1340 SV *sv = mess_alloc();
1342 va_start(args, pat);
1343 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
1350 Perl_form(pTHX_ const char* pat, ...)
1352 SV *sv = mess_alloc();
1354 va_start(args, pat);
1355 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
1361 Perl_mess(pTHX_ const char *pat, va_list *args)
1363 SV *sv = mess_alloc();
1364 static char dgd[] = " during global destruction.\n";
1366 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1367 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1369 if (PL_curcop->cop_line)
1370 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
1371 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1372 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1373 bool line_mode = (RsSIMPLE(PL_rs) &&
1374 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1375 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
1376 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1377 line_mode ? "line" : "chunk",
1378 (long)IoLINES(GvIOp(PL_last_in_gv)));
1380 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1386 do_die(pTHX_ const char* pat, va_list *args)
1390 int was_in_eval = PL_in_eval;
1397 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
1398 "%p: die: curstack = %p, mainstack = %p\n",
1399 thr, PL_curstack, PL_mainstack));
1402 msv = mess(pat, args);
1403 message = SvPV(msv,msglen);
1409 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
1410 "%p: die: message = %s\ndiehook = %p\n",
1411 thr, message, PL_diehook));
1413 /* sv_2cv might call Perl_croak() */
1414 SV *olddiehook = PL_diehook;
1416 SAVESPTR(PL_diehook);
1417 PL_diehook = Nullsv;
1418 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1420 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1426 msg = newSVpvn(message, msglen);
1434 PUSHSTACKi(PERLSI_DIEHOOK);
1438 call_sv((SV*)cv, G_DISCARD);
1444 PL_restartop = die_where(message, msglen);
1445 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
1446 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1447 thr, PL_restartop, was_in_eval, PL_top_env));
1448 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1450 return PL_restartop;
1453 #ifdef PERL_IMPLICIT_CONTEXT
1455 Perl_die_nocontext(const char* pat, ...)
1460 va_start(args, pat);
1461 o = do_die(aTHX_ pat, &args);
1468 Perl_die(pTHX_ const char* pat, ...)
1472 va_start(args, pat);
1473 o = do_die(aTHX_ pat, &args);
1479 S_do_croak(pTHX_ const char* pat, va_list *args)
1489 msv = mess(pat, args);
1490 message = SvPV(msv,msglen);
1491 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
1493 /* sv_2cv might call Perl_croak() */
1494 SV *olddiehook = PL_diehook;
1496 SAVESPTR(PL_diehook);
1497 PL_diehook = Nullsv;
1498 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1500 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1505 msg = newSVpvn(message, msglen);
1509 PUSHSTACKi(PERLSI_DIEHOOK);
1513 call_sv((SV*)cv, G_DISCARD);
1519 PL_restartop = die_where(message, msglen);
1524 /* SFIO can really mess with your errno */
1527 PerlIO_write(PerlIO_stderr(), message, msglen);
1528 (void)PerlIO_flush(PerlIO_stderr());
1536 #ifdef PERL_IMPLICIT_CONTEXT
1538 Perl_croak_nocontext(const char *pat, ...)
1542 va_start(args, pat);
1543 do_croak(pat, &args);
1547 #endif /* PERL_IMPLICIT_CONTEXT */
1550 Perl_croak(pTHX_ const char *pat, ...)
1553 va_start(args, pat);
1554 do_croak(pat, &args);
1560 S_do_warn(pTHX_ const char* pat, va_list *args)
1569 msv = mess(pat, args);
1570 message = SvPV(msv, msglen);
1573 /* sv_2cv might call Perl_warn() */
1575 SV *oldwarnhook = PL_warnhook;
1577 SAVESPTR(PL_warnhook);
1578 PL_warnhook = Nullsv;
1579 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1581 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1586 msg = newSVpvn(message, msglen);
1590 PUSHSTACKi(PERLSI_WARNHOOK);
1594 call_sv((SV*)cv, G_DISCARD);
1600 PerlIO_write(PerlIO_stderr(), message, msglen);
1602 DEBUG_L(*message == '!'
1603 ? (xstat(message[1]=='!'
1604 ? (message[2]=='!' ? 2 : 1)
1609 (void)PerlIO_flush(PerlIO_stderr());
1612 #ifdef PERL_IMPLICIT_CONTEXT
1614 Perl_warn_nocontext(const char *pat, ...)
1618 va_start(args, pat);
1619 do_warn(pat, &args);
1622 #endif /* PERL_IMPLICIT_CONTEXT */
1625 Perl_warn(pTHX_ const char *pat, ...)
1628 va_start(args, pat);
1629 do_warn(pat, &args);
1634 Perl_warner(pTHX_ U32 err, const char* pat,...)
1645 va_start(args, pat);
1646 msv = mess(pat, &args);
1647 message = SvPV(msv, msglen);
1652 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
1653 #endif /* USE_THREADS */
1655 /* sv_2cv might call Perl_croak() */
1656 SV *olddiehook = PL_diehook;
1658 SAVESPTR(PL_diehook);
1659 PL_diehook = Nullsv;
1660 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1662 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1667 msg = newSVpvn(message, msglen);
1674 call_sv((SV*)cv, G_DISCARD);
1680 PL_restartop = die_where(message, msglen);
1683 PerlIO_write(PerlIO_stderr(), message, msglen);
1684 (void)PerlIO_flush(PerlIO_stderr());
1690 /* sv_2cv might call Perl_warn() */
1692 SV *oldwarnhook = PL_warnhook;
1694 SAVESPTR(PL_warnhook);
1695 PL_warnhook = Nullsv;
1696 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1698 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1703 msg = newSVpvn(message, msglen);
1710 call_sv((SV*)cv, G_DISCARD);
1716 PerlIO_write(PerlIO_stderr(), message, msglen);
1720 (void)PerlIO_flush(PerlIO_stderr());
1724 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1725 #if !defined(WIN32) && !defined(CYGWIN32)
1727 Perl_my_setenv(pTHX_ char *nam, char *val)
1729 #ifndef PERL_USE_SAFE_PUTENV
1730 /* most putenv()s leak, so we manipulate environ directly */
1731 register I32 i=setenv_getix(nam); /* where does it go? */
1733 if (environ == PL_origenviron) { /* need we copy environment? */
1739 for (max = i; environ[max]; max++) ;
1740 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1741 for (j=0; j<max; j++) { /* copy environment */
1742 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1743 strcpy(tmpenv[j], environ[j]);
1745 tmpenv[max] = Nullch;
1746 environ = tmpenv; /* tell exec where it is now */
1749 safesysfree(environ[i]);
1750 while (environ[i]) {
1751 environ[i] = environ[i+1];
1756 if (!environ[i]) { /* does not exist yet */
1757 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1758 environ[i+1] = Nullch; /* make sure it's null terminated */
1761 safesysfree(environ[i]);
1762 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1765 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1767 /* MS-DOS requires environment variable names to be in uppercase */
1768 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1769 * some utilities and applications may break because they only look
1770 * for upper case strings. (Fixed strupr() bug here.)]
1772 strcpy(environ[i],nam); strupr(environ[i]);
1773 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1776 #else /* PERL_USE_SAFE_PUTENV */
1779 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1781 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1783 strcpy(new_env,nam); strupr(new_env);
1784 (void)sprintf(new_env + strlen(nam),"=%s",val);
1786 (void)putenv(new_env);
1787 #endif /* PERL_USE_SAFE_PUTENV */
1790 #else /* if WIN32 */
1793 Perl_my_setenv(pTHX_ char *nam,char *val)
1796 #ifdef USE_WIN32_RTL_ENV
1798 register char *envstr;
1799 STRLEN namlen = strlen(nam);
1801 char *oldstr = environ[setenv_getix(nam)];
1803 /* putenv() has totally broken semantics in both the Borland
1804 * and Microsoft CRTLs. They either store the passed pointer in
1805 * the environment without making a copy, or make a copy and don't
1806 * free it. And on top of that, they dont free() old entries that
1807 * are being replaced/deleted. This means the caller must
1808 * free any old entries somehow, or we end up with a memory
1809 * leak every time my_setenv() is called. One might think
1810 * one could directly manipulate environ[], like the UNIX code
1811 * above, but direct changes to environ are not allowed when
1812 * calling putenv(), since the RTLs maintain an internal
1813 * *copy* of environ[]. Bad, bad, *bad* stink.
1824 vallen = strlen(val);
1825 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
1826 (void)sprintf(envstr,"%s=%s",nam,val);
1827 (void)PerlEnv_putenv(envstr);
1829 safesysfree(oldstr);
1831 safesysfree(envstr); /* MSVCRT leaks without this */
1834 #else /* !USE_WIN32_RTL_ENV */
1836 register char *envstr;
1837 STRLEN len = strlen(nam) + 3;
1842 New(904, envstr, len, char);
1843 (void)sprintf(envstr,"%s=%s",nam,val);
1844 (void)PerlEnv_putenv(envstr);
1853 Perl_setenv_getix(pTHX_ char *nam)
1855 register I32 i, len = strlen(nam);
1857 for (i = 0; environ[i]; i++) {
1860 strnicmp(environ[i],nam,len) == 0
1862 strnEQ(environ[i],nam,len)
1864 && environ[i][len] == '=')
1865 break; /* strnEQ must come first to avoid */
1866 } /* potential SEGV's */
1872 #ifdef UNLINK_ALL_VERSIONS
1874 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
1878 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
1883 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
1885 Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
1889 if (from - to >= 0) {
1897 *(--to) = *(--from);
1905 Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
1915 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
1917 Perl_my_bzero(pTHX_ register char *loc, register I32 len)
1927 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
1929 Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1931 register U8 *a = (U8 *)s1;
1932 register U8 *b = (U8 *)s2;
1936 if (tmp = *a++ - *b++)
1941 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
1945 #ifdef USE_CHAR_VSPRINTF
1950 vsprintf(char *dest, const char *pat, char *args)
1954 fakebuf._ptr = dest;
1955 fakebuf._cnt = 32767;
1959 fakebuf._flag = _IOWRT|_IOSTRG;
1960 _doprnt(pat, args, &fakebuf); /* what a kludge */
1961 (void)putc('\0', &fakebuf);
1962 #ifdef USE_CHAR_VSPRINTF
1965 return 0; /* perl doesn't use return value */
1969 #endif /* HAS_VPRINTF */
1972 #if BYTEORDER != 0x4321
1974 Perl_my_swap(pTHX_ short s)
1976 #if (BYTEORDER & 1) == 0
1979 result = ((s & 255) << 8) + ((s >> 8) & 255);
1987 Perl_my_htonl(pTHX_ long l)
1991 char c[sizeof(long)];
1994 #if BYTEORDER == 0x1234
1995 u.c[0] = (l >> 24) & 255;
1996 u.c[1] = (l >> 16) & 255;
1997 u.c[2] = (l >> 8) & 255;
2001 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2002 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2007 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2008 u.c[o & 0xf] = (l >> s) & 255;
2016 Perl_my_ntohl(pTHX_ long l)
2020 char c[sizeof(long)];
2023 #if BYTEORDER == 0x1234
2024 u.c[0] = (l >> 24) & 255;
2025 u.c[1] = (l >> 16) & 255;
2026 u.c[2] = (l >> 8) & 255;
2030 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2031 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2038 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2039 l |= (u.c[o & 0xf] & 255) << s;
2046 #endif /* BYTEORDER != 0x4321 */
2050 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2051 * If these functions are defined,
2052 * the BYTEORDER is neither 0x1234 nor 0x4321.
2053 * However, this is not assumed.
2057 #define HTOV(name,type) \
2059 name (register type n) \
2063 char c[sizeof(type)]; \
2067 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2068 u.c[i] = (n >> s) & 0xFF; \
2073 #define VTOH(name,type) \
2075 name (register type n) \
2079 char c[sizeof(type)]; \
2085 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2086 n += (u.c[i] & 0xFF) << s; \
2091 #if defined(HAS_HTOVS) && !defined(htovs)
2094 #if defined(HAS_HTOVL) && !defined(htovl)
2097 #if defined(HAS_VTOHS) && !defined(vtohs)
2100 #if defined(HAS_VTOHL) && !defined(vtohl)
2104 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2105 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
2107 Perl_my_popen(pTHX_ char *cmd, char *mode)
2110 register I32 This, that;
2113 I32 doexec = strNE(cmd,"-");
2117 PERL_FLUSHALL_FOR_CHILD;
2120 return my_syspopen(cmd,mode);
2123 This = (*mode == 'w');
2125 if (doexec && PL_tainting) {
2127 taint_proper("Insecure %s%s", "EXEC");
2129 if (PerlProc_pipe(p) < 0)
2131 if (doexec && PerlProc_pipe(pp) >= 0)
2133 while ((pid = (doexec?vfork():fork())) < 0) {
2134 if (errno != EAGAIN) {
2135 PerlLIO_close(p[This]);
2137 PerlLIO_close(pp[0]);
2138 PerlLIO_close(pp[1]);
2141 Perl_croak(aTHX_ "Can't fork");
2153 PerlLIO_close(p[THAT]);
2155 PerlLIO_close(pp[0]);
2156 #if defined(HAS_FCNTL) && defined(F_SETFD)
2157 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2160 if (p[THIS] != (*mode == 'r')) {
2161 PerlLIO_dup2(p[THIS], *mode == 'r');
2162 PerlLIO_close(p[THIS]);
2166 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2172 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2176 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2179 #endif /* defined OS2 */
2181 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2182 sv_setiv(GvSV(tmpgv), (IV)getpid());
2184 hv_clear(PL_pidstatus); /* we have no children */
2189 do_execfree(); /* free any memory malloced by child on vfork */
2190 PerlLIO_close(p[that]);
2192 PerlLIO_close(pp[1]);
2193 if (p[that] < p[This]) {
2194 PerlLIO_dup2(p[This], p[that]);
2195 PerlLIO_close(p[This]);
2198 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2199 (void)SvUPGRADE(sv,SVt_IV);
2201 PL_forkprocess = pid;
2202 if (did_pipes && pid > 0) {
2206 while (n < sizeof(int)) {
2207 n1 = PerlLIO_read(pp[0],
2208 (void*)(((char*)&errkid)+n),
2214 if (n) { /* Error */
2215 if (n != sizeof(int))
2216 Perl_croak(aTHX_ "panic: kid popen errno read");
2217 PerlLIO_close(pp[0]);
2218 errno = errkid; /* Propagate errno from kid */
2223 PerlLIO_close(pp[0]);
2224 return PerlIO_fdopen(p[This], mode);
2227 #if defined(atarist) || defined(DJGPP)
2230 Perl_my_popen(pTHX_ char *cmd, char *mode)
2232 /* Needs work for PerlIO ! */
2233 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2234 PERL_FLUSHALL_FOR_CHILD;
2235 return popen(PerlIO_exportFILE(cmd, 0), mode);
2239 #endif /* !DOSISH */
2243 Perl_dump_fds(pTHX_ char *s)
2246 struct stat tmpstatbuf;
2248 PerlIO_printf(PerlIO_stderr(),"%s", s);
2249 for (fd = 0; fd < 32; fd++) {
2250 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2251 PerlIO_printf(PerlIO_stderr()," %d",fd);
2253 PerlIO_printf(PerlIO_stderr(),"\n");
2255 #endif /* DUMP_FDS */
2259 dup2(int oldfd, int newfd)
2261 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2264 PerlLIO_close(newfd);
2265 return fcntl(oldfd, F_DUPFD, newfd);
2267 #define DUP2_MAX_FDS 256
2268 int fdtmp[DUP2_MAX_FDS];
2274 PerlLIO_close(newfd);
2275 /* good enough for low fd's... */
2276 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2277 if (fdx >= DUP2_MAX_FDS) {
2285 PerlLIO_close(fdtmp[--fdx]);
2292 #ifdef HAS_SIGACTION
2295 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2297 struct sigaction act, oact;
2299 act.sa_handler = handler;
2300 sigemptyset(&act.sa_mask);
2303 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2306 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2307 act.sa_flags |= SA_NOCLDWAIT;
2309 if (sigaction(signo, &act, &oact) == -1)
2312 return oact.sa_handler;
2316 Perl_rsignal_state(pTHX_ int signo)
2318 struct sigaction oact;
2320 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2323 return oact.sa_handler;
2327 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2329 struct sigaction act;
2331 act.sa_handler = handler;
2332 sigemptyset(&act.sa_mask);
2335 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2338 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2339 act.sa_flags |= SA_NOCLDWAIT;
2341 return sigaction(signo, &act, save);
2345 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2347 return sigaction(signo, save, (struct sigaction *)NULL);
2350 #else /* !HAS_SIGACTION */
2353 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2355 return PerlProc_signal(signo, handler);
2358 static int sig_trapped;
2368 Perl_rsignal_state(pTHX_ int signo)
2370 Sighandler_t oldsig;
2373 oldsig = PerlProc_signal(signo, sig_trap);
2374 PerlProc_signal(signo, oldsig);
2376 PerlProc_kill(getpid(), signo);
2381 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2383 *save = PerlProc_signal(signo, handler);
2384 return (*save == SIG_ERR) ? -1 : 0;
2388 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2390 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2393 #endif /* !HAS_SIGACTION */
2395 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2396 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
2398 Perl_my_pclose(pTHX_ PerlIO *ptr)
2400 Sigsave_t hstat, istat, qstat;
2408 int saved_vaxc_errno;
2411 int saved_win32_errno;
2414 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2415 pid = (int)SvIVX(*svp);
2417 *svp = &PL_sv_undef;
2419 if (pid == -1) { /* Opened by popen. */
2420 return my_syspclose(ptr);
2423 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2424 saved_errno = errno;
2426 saved_vaxc_errno = vaxc$errno;
2429 saved_win32_errno = GetLastError();
2433 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2435 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2436 rsignal_save(SIGINT, SIG_IGN, &istat);
2437 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2439 pid2 = wait4pid(pid, &status, 0);
2440 } while (pid2 == -1 && errno == EINTR);
2441 rsignal_restore(SIGHUP, &hstat);
2442 rsignal_restore(SIGINT, &istat);
2443 rsignal_restore(SIGQUIT, &qstat);
2445 SETERRNO(saved_errno, saved_vaxc_errno);
2448 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2450 #endif /* !DOSISH */
2452 #if !defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(CYGWIN32)
2454 Perl_wait4pid(pTHX_ int pid, int *statusp, int flags)
2458 char spid[TYPE_CHARS(int)];
2463 sprintf(spid, "%d", pid);
2464 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2465 if (svp && *svp != &PL_sv_undef) {
2466 *statusp = SvIVX(*svp);
2467 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2474 hv_iterinit(PL_pidstatus);
2475 if (entry = hv_iternext(PL_pidstatus)) {
2476 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2477 sv = hv_iterval(PL_pidstatus,entry);
2478 *statusp = SvIVX(sv);
2479 sprintf(spid, "%d", pid);
2480 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2485 # ifdef HAS_WAITPID_RUNTIME
2486 if (!HAS_WAITPID_RUNTIME)
2489 return PerlProc_waitpid(pid,statusp,flags);
2491 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2492 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2494 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2499 Perl_croak(aTHX_ "Can't do waitpid with flags");
2501 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2502 pidgone(result,*statusp);
2510 #endif /* !DOSISH || OS2 || WIN32 */
2514 Perl_pidgone(pTHX_ int pid, int status)
2517 char spid[TYPE_CHARS(int)];
2519 sprintf(spid, "%d", pid);
2520 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2521 (void)SvUPGRADE(sv,SVt_IV);
2526 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2529 int /* Cannot prototype with I32
2531 my_syspclose(PerlIO *ptr)
2534 Perl_my_pclose(pTHX_ PerlIO *ptr)
2537 /* Needs work for PerlIO ! */
2538 FILE *f = PerlIO_findFILE(ptr);
2539 I32 result = pclose(f);
2540 PerlIO_releaseFILE(ptr,f);
2546 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2549 register const char *frombase = from;
2552 register const char c = *from;
2557 while (count-- > 0) {
2558 for (todo = len; todo > 0; todo--) {
2566 Perl_cast_ulong(pTHX_ double f)
2571 # define BIGDOUBLE 2147483648.0
2573 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2576 return (unsigned long)f;
2578 return (unsigned long)along;
2582 /* Unfortunately, on some systems the cast_uv() function doesn't
2583 work with the system-supplied definition of ULONG_MAX. The
2584 comparison (f >= ULONG_MAX) always comes out true. It must be a
2585 problem with the compiler constant folding.
2587 In any case, this workaround should be fine on any two's complement
2588 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2590 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2593 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2595 -- Kenneth Albanowski <kjahds@kjahds.com>
2599 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2603 Perl_cast_i32(pTHX_ double f)
2606 return (I32) I32_MAX;
2608 return (I32) I32_MIN;
2613 Perl_cast_iv(pTHX_ double f)
2618 if (f >= (double)UV_MAX)
2629 Perl_cast_uv(pTHX_ double f)
2632 return (UV) MY_UV_MAX;
2646 Perl_same_dirent(pTHX_ char *a, char *b)
2648 char *fa = strrchr(a,'/');
2649 char *fb = strrchr(b,'/');
2650 struct stat tmpstatbuf1;
2651 struct stat tmpstatbuf2;
2652 SV *tmpsv = sv_newmortal();
2665 sv_setpv(tmpsv, ".");
2667 sv_setpvn(tmpsv, a, fa - a);
2668 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2671 sv_setpv(tmpsv, ".");
2673 sv_setpvn(tmpsv, b, fb - b);
2674 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2676 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2677 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2679 #endif /* !HAS_RENAME */
2682 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2684 register char *s = start;
2685 register UV retval = 0;
2686 bool overflowed = FALSE;
2687 while (len && *s >= '0' && *s <= '1') {
2688 register UV n = retval << 1;
2689 if (!overflowed && (n >> 1) != retval) {
2690 Perl_warn(aTHX_ "Integer overflow in binary number");
2693 retval = n | (*s++ - '0');
2696 if (len && (*s >= '2' && *s <= '9')) {
2698 if (ckWARN(WARN_UNSAFE))
2699 Perl_warner(aTHX_ WARN_UNSAFE, "Illegal binary digit '%c' ignored", *s);
2701 *retlen = s - start;
2705 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2707 register char *s = start;
2708 register UV retval = 0;
2709 bool overflowed = FALSE;
2711 while (len && *s >= '0' && *s <= '7') {
2712 register UV n = retval << 3;
2713 if (!overflowed && (n >> 3) != retval) {
2714 Perl_warn(aTHX_ "Integer overflow in octal number");
2717 retval = n | (*s++ - '0');
2720 if (len && (*s == '8' || *s == '9')) {
2722 if (ckWARN(WARN_OCTAL))
2723 Perl_warner(aTHX_ WARN_OCTAL, "Illegal octal digit '%c' ignored", *s);
2725 *retlen = s - start;
2730 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
2732 register char *s = start;
2733 register UV retval = 0;
2734 bool overflowed = FALSE;
2738 while (len-- && *s) {
2739 tmp = strchr((char *) PL_hexdigit, *s++);
2741 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
2746 if (ckWARN(WARN_UNSAFE))
2747 Perl_warner(aTHX_ WARN_UNSAFE,"Illegal hex digit '%c' ignored", *s);
2752 if (!overflowed && (n >> 4) != retval) {
2753 Perl_warn(aTHX_ "Integer overflow in hex number");
2756 retval = n | ((tmp - PL_hexdigit) & 15);
2758 *retlen = s - start;
2763 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
2766 char *xfound = Nullch;
2767 char *xfailed = Nullch;
2768 char tmpbuf[MAXPATHLEN];
2772 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2773 # define SEARCH_EXTS ".bat", ".cmd", NULL
2774 # define MAX_EXT_LEN 4
2777 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2778 # define MAX_EXT_LEN 4
2781 # define SEARCH_EXTS ".pl", ".com", NULL
2782 # define MAX_EXT_LEN 4
2784 /* additional extensions to try in each dir if scriptname not found */
2786 char *exts[] = { SEARCH_EXTS };
2787 char **ext = search_ext ? search_ext : exts;
2788 int extidx = 0, i = 0;
2789 char *curext = Nullch;
2791 # define MAX_EXT_LEN 0
2795 * If dosearch is true and if scriptname does not contain path
2796 * delimiters, search the PATH for scriptname.
2798 * If SEARCH_EXTS is also defined, will look for each
2799 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2800 * while searching the PATH.
2802 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2803 * proceeds as follows:
2804 * If DOSISH or VMSISH:
2805 * + look for ./scriptname{,.foo,.bar}
2806 * + search the PATH for scriptname{,.foo,.bar}
2809 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2810 * this will not look in '.' if it's not in the PATH)
2815 # ifdef ALWAYS_DEFTYPES
2816 len = strlen(scriptname);
2817 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2818 int hasdir, idx = 0, deftypes = 1;
2821 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2824 int hasdir, idx = 0, deftypes = 1;
2827 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2829 /* The first time through, just add SEARCH_EXTS to whatever we
2830 * already have, so we can check for default file types. */
2832 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
2838 if ((strlen(tmpbuf) + strlen(scriptname)
2839 + MAX_EXT_LEN) >= sizeof tmpbuf)
2840 continue; /* don't search dir with too-long name */
2841 strcat(tmpbuf, scriptname);
2845 if (strEQ(scriptname, "-"))
2847 if (dosearch) { /* Look in '.' first. */
2848 char *cur = scriptname;
2850 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2852 if (strEQ(ext[i++],curext)) {
2853 extidx = -1; /* already has an ext */
2858 DEBUG_p(PerlIO_printf(Perl_debug_log,
2859 "Looking for %s\n",cur));
2860 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2861 && !S_ISDIR(PL_statbuf.st_mode)) {
2869 if (cur == scriptname) {
2870 len = strlen(scriptname);
2871 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
2873 cur = strcpy(tmpbuf, scriptname);
2875 } while (extidx >= 0 && ext[extidx] /* try an extension? */
2876 && strcpy(tmpbuf+len, ext[extidx++]));
2881 if (dosearch && !strchr(scriptname, '/')
2883 && !strchr(scriptname, '\\')
2885 && (s = PerlEnv_getenv("PATH"))) {
2888 PL_bufend = s + strlen(s);
2889 while (s < PL_bufend) {
2890 #if defined(atarist) || defined(DOSISH)
2895 && *s != ';'; len++, s++) {
2896 if (len < sizeof tmpbuf)
2899 if (len < sizeof tmpbuf)
2901 #else /* ! (atarist || DOSISH) */
2902 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
2905 #endif /* ! (atarist || DOSISH) */
2908 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
2909 continue; /* don't search dir with too-long name */
2911 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
2912 && tmpbuf[len - 1] != '/'
2913 && tmpbuf[len - 1] != '\\'
2916 tmpbuf[len++] = '/';
2917 if (len == 2 && tmpbuf[0] == '.')
2919 (void)strcpy(tmpbuf + len, scriptname);
2923 len = strlen(tmpbuf);
2924 if (extidx > 0) /* reset after previous loop */
2928 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
2929 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
2930 if (S_ISDIR(PL_statbuf.st_mode)) {
2934 } while ( retval < 0 /* not there */
2935 && extidx>=0 && ext[extidx] /* try an extension? */
2936 && strcpy(tmpbuf+len, ext[extidx++])
2941 if (S_ISREG(PL_statbuf.st_mode)
2942 && cando(S_IRUSR,TRUE,&PL_statbuf)
2944 && cando(S_IXUSR,TRUE,&PL_statbuf)
2948 xfound = tmpbuf; /* bingo! */
2952 xfailed = savepv(tmpbuf);
2955 if (!xfound && !seen_dot && !xfailed &&
2956 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
2957 || S_ISDIR(PL_statbuf.st_mode)))
2959 seen_dot = 1; /* Disable message. */
2961 if (flags & 1) { /* do or die? */
2962 Perl_croak(aTHX_ "Can't %s %s%s%s",
2963 (xfailed ? "execute" : "find"),
2964 (xfailed ? xfailed : scriptname),
2965 (xfailed ? "" : " on PATH"),
2966 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2968 scriptname = Nullch;
2972 scriptname = xfound;
2974 return (scriptname ? savepv(scriptname) : Nullch);
2980 /* Very simplistic scheduler for now */
2984 thr = thr->i.next_run;
2988 Perl_cond_init(pTHX_ perl_cond *cp)
2994 Perl_cond_signal(pTHX_ perl_cond *cp)
2997 perl_cond cond = *cp;
3002 /* Insert t in the runnable queue just ahead of us */
3003 t->i.next_run = thr->i.next_run;
3004 thr->i.next_run->i.prev_run = t;
3005 t->i.prev_run = thr;
3006 thr->i.next_run = t;
3007 thr->i.wait_queue = 0;
3008 /* Remove from the wait queue */
3014 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3017 perl_cond cond, cond_next;
3019 for (cond = *cp; cond; cond = cond_next) {
3021 /* Insert t in the runnable queue just ahead of us */
3022 t->i.next_run = thr->i.next_run;
3023 thr->i.next_run->i.prev_run = t;
3024 t->i.prev_run = thr;
3025 thr->i.next_run = t;
3026 thr->i.wait_queue = 0;
3027 /* Remove from the wait queue */
3028 cond_next = cond->next;
3035 Perl_cond_wait(pTHX_ perl_cond *cp)
3039 if (thr->i.next_run == thr)
3040 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3042 New(666, cond, 1, struct perl_wait_queue);
3046 thr->i.wait_queue = cond;
3047 /* Remove ourselves from runnable queue */
3048 thr->i.next_run->i.prev_run = thr->i.prev_run;
3049 thr->i.prev_run->i.next_run = thr->i.next_run;
3051 #endif /* FAKE_THREADS */
3053 #ifdef PTHREAD_GETSPECIFIC_INT
3054 struct perl_thread *
3059 if (pthread_getspecific(PL_thr_key, &t))
3060 Perl_croak(aTHX_ "panic: pthread_getspecific");
3061 return (struct perl_thread *) t;
3066 Perl_condpair_magic(pTHX_ SV *sv)
3070 SvUPGRADE(sv, SVt_PVMG);
3071 mg = mg_find(sv, 'm');
3075 New(53, cp, 1, condpair_t);
3076 MUTEX_INIT(&cp->mutex);
3077 COND_INIT(&cp->owner_cond);
3078 COND_INIT(&cp->cond);
3080 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
3081 mg = mg_find(sv, 'm');
3083 /* someone else beat us to initialising it */
3084 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
3085 MUTEX_DESTROY(&cp->mutex);
3086 COND_DESTROY(&cp->owner_cond);
3087 COND_DESTROY(&cp->cond);
3091 sv_magic(sv, Nullsv, 'm', 0, 0);
3093 mg->mg_ptr = (char *)cp;
3094 mg->mg_len = sizeof(cp);
3095 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
3096 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
3097 "%p: condpair_magic %p\n", thr, sv));)
3104 * Make a new perl thread structure using t as a prototype. Some of the
3105 * fields for the new thread are copied from the prototype thread, t,
3106 * so t should not be running in perl at the time this function is
3107 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3108 * thread calling new_struct_thread) clearly satisfies this constraint.
3110 struct perl_thread *
3111 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3113 #ifndef PERL_IMPLICIT_CONTEXT
3114 struct perl_thread *thr;
3120 sv = newSVpvn("", 0);
3121 SvGROW(sv, sizeof(struct perl_thread) + 1);
3122 SvCUR_set(sv, sizeof(struct perl_thread));
3123 thr = (Thread) SvPVX(sv);
3125 memset(thr, 0xab, sizeof(struct perl_thread));
3132 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3134 Zero(thr, 1, struct perl_thread);
3137 PL_protect = FUNC_NAME_TO_PTR(Perl_default_protect);
3142 PL_curcop = &PL_compiling;
3143 thr->cvcache = newHV();
3144 thr->threadsv = newAV();
3145 thr->specific = newAV();
3146 thr->errsv = newSVpvn("", 0);
3147 thr->errhv = newHV();
3148 thr->flags = THRf_R_JOINABLE;
3149 MUTEX_INIT(&thr->mutex);
3151 /* top_env needs to be non-zero. It points to an area
3152 in which longjmp() stuff is stored, as C callstack
3153 info there at least is thread specific this has to
3154 be per-thread. Otherwise a 'die' in a thread gives
3155 that thread the C stack of last thread to do an eval {}!
3156 See comments in scope.h
3157 Initialize top entry (as in perl.c for main thread)
3159 PL_start_env.je_prev = NULL;
3160 PL_start_env.je_ret = -1;
3161 PL_start_env.je_mustcatch = TRUE;
3162 PL_top_env = &PL_start_env;
3164 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3167 PL_statname = NEWSV(66,0);
3169 PL_regcompp = FUNC_NAME_TO_PTR(Perl_pregcomp);
3170 PL_regexecp = FUNC_NAME_TO_PTR(Perl_regexec_flags);
3172 PL_reginterp_cnt = 0;
3173 PL_lastscream = Nullsv;
3176 PL_reg_start_tmp = 0;
3177 PL_reg_start_tmpl = 0;
3179 /* parent thread's data needs to be locked while we make copy */
3180 MUTEX_LOCK(&t->mutex);
3182 PL_protect = t->Tprotect;
3184 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3185 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3186 PL_curstash = t->Tcurstash; /* always be set to main? */
3188 PL_tainted = t->Ttainted;
3189 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3190 PL_nrs = newSVsv(t->Tnrs);
3191 PL_rs = SvREFCNT_inc(PL_nrs);
3192 PL_last_in_gv = Nullgv;
3193 PL_ofslen = t->Tofslen;
3194 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3195 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3196 PL_chopset = t->Tchopset;
3197 PL_formtarget = newSVsv(t->Tformtarget);
3198 PL_bodytarget = newSVsv(t->Tbodytarget);
3199 PL_toptarget = newSVsv(t->Ttoptarget);
3201 /* Initialise all per-thread SVs that the template thread used */
3202 svp = AvARRAY(t->threadsv);
3203 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3204 if (*svp && *svp != &PL_sv_undef) {
3205 SV *sv = newSVsv(*svp);
3206 av_store(thr->threadsv, i, sv);
3207 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3208 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
3209 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
3212 thr->threadsvp = AvARRAY(thr->threadsv);
3214 MUTEX_LOCK(&PL_threads_mutex);
3216 thr->tid = ++PL_threadnum;
3217 thr->next = t->next;
3220 thr->next->prev = thr;
3221 MUTEX_UNLOCK(&PL_threads_mutex);
3223 /* done copying parent's state */
3224 MUTEX_UNLOCK(&t->mutex);
3226 #ifdef HAVE_THREAD_INTERN
3227 Perl_init_thread_intern(thr);
3228 #endif /* HAVE_THREAD_INTERN */
3231 #endif /* USE_THREADS */
3235 * This hack is to force load of "huge" support from libm.a
3236 * So it is in perl for (say) POSIX to use.
3237 * Needed for SunOS with Sun's 'acc' for example.
3246 #ifdef PERL_GLOBAL_STRUCT
3255 Perl_get_op_names(pTHX)
3261 Perl_get_op_descs(pTHX)
3267 Perl_get_no_modify(pTHX)
3269 return (char*)PL_no_modify;
3273 Perl_get_opargs(pTHX)
3278 #ifndef HAS_GETENV_LEN
3280 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3282 char *env_trans = PerlEnv_getenv(env_elem);
3284 *len = strlen(env_trans);
3291 Perl_get_vtbl(pTHX_ int vtbl_id)
3293 MGVTBL* result = Null(MGVTBL*);
3297 result = &PL_vtbl_sv;
3300 result = &PL_vtbl_env;
3302 case want_vtbl_envelem:
3303 result = &PL_vtbl_envelem;
3306 result = &PL_vtbl_sig;
3308 case want_vtbl_sigelem:
3309 result = &PL_vtbl_sigelem;
3311 case want_vtbl_pack:
3312 result = &PL_vtbl_pack;
3314 case want_vtbl_packelem:
3315 result = &PL_vtbl_packelem;
3317 case want_vtbl_dbline:
3318 result = &PL_vtbl_dbline;
3321 result = &PL_vtbl_isa;
3323 case want_vtbl_isaelem:
3324 result = &PL_vtbl_isaelem;
3326 case want_vtbl_arylen:
3327 result = &PL_vtbl_arylen;
3329 case want_vtbl_glob:
3330 result = &PL_vtbl_glob;
3332 case want_vtbl_mglob:
3333 result = &PL_vtbl_mglob;
3335 case want_vtbl_nkeys:
3336 result = &PL_vtbl_nkeys;
3338 case want_vtbl_taint:
3339 result = &PL_vtbl_taint;
3341 case want_vtbl_substr:
3342 result = &PL_vtbl_substr;
3345 result = &PL_vtbl_vec;
3348 result = &PL_vtbl_pos;
3351 result = &PL_vtbl_bm;
3354 result = &PL_vtbl_fm;
3356 case want_vtbl_uvar:
3357 result = &PL_vtbl_uvar;
3360 case want_vtbl_mutex:
3361 result = &PL_vtbl_mutex;
3364 case want_vtbl_defelem:
3365 result = &PL_vtbl_defelem;
3367 case want_vtbl_regexp:
3368 result = &PL_vtbl_regexp;
3370 case want_vtbl_regdata:
3371 result = &PL_vtbl_regdata;
3373 case want_vtbl_regdatum:
3374 result = &PL_vtbl_regdatum;
3376 #ifdef USE_LOCALE_COLLATE
3377 case want_vtbl_collxfrm:
3378 result = &PL_vtbl_collxfrm;
3381 case want_vtbl_amagic:
3382 result = &PL_vtbl_amagic;
3384 case want_vtbl_amagicelem:
3385 result = &PL_vtbl_amagicelem;
3387 case want_vtbl_backref:
3388 result = &PL_vtbl_backref;
3395 Perl_my_fflush_all(pTHX)
3398 return PerlIO_flush(NULL);
3401 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3402 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3403 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3405 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3406 open_max = sysconf(_SC_OPEN_MAX);
3409 open_max = FOPEN_MAX;
3412 open_max = OPEN_MAX;
3423 for (i = 0; i < open_max; i++)
3424 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3425 STDIO_STREAM_ARRAY[i]._file < open_max &&
3426 STDIO_STREAM_ARRAY[i]._flag)
3427 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3431 SETERRNO(EBADF,RMS$_IFI);