3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
13 * not content." --Gandalf
16 /* This file contains assorted utility routines.
17 * Which is a polite way of saying any stuff that people couldn't think of
18 * a better place for. Amongst other things, it includes the warning and
19 * dieing stuff, plus wrappers for malloc code.
23 #define PERL_IN_UTIL_C
29 # define SIG_ERR ((Sighandler_t) -1)
34 /* Missing protos on LynxOS */
39 # include <sys/wait.h>
44 # include <sys/select.h>
50 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
51 # define FD_CLOEXEC 1 /* NeXT needs this */
54 /* NOTE: Do not call the next three routines directly. Use the macros
55 * in handy.h, so that we can easily redefine everything to do tracking of
56 * allocated hunks back to the original New to track down any memory leaks.
57 * XXX This advice seems to be widely ignored :-( --AD August 1996.
60 /* paranoid version of system's malloc() */
63 Perl_safesysmalloc(MEM_SIZE size)
69 PerlIO_printf(Perl_error_log,
70 "Allocation too large: %lx\n", size) FLUSH;
73 #endif /* HAS_64K_LIMIT */
76 Perl_croak_nocontext("panic: malloc");
78 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79 PERL_ALLOC_CHECK(ptr);
80 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
86 /* Can't use PerlIO to write as it allocates memory */
87 PerlLIO_write(PerlIO_fileno(Perl_error_log),
88 PL_no_mem, strlen(PL_no_mem));
95 /* paranoid version of system's realloc() */
98 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
102 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
103 Malloc_t PerlMem_realloc();
104 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
108 PerlIO_printf(Perl_error_log,
109 "Reallocation too large: %lx\n", size) FLUSH;
112 #endif /* HAS_64K_LIMIT */
119 return safesysmalloc(size);
122 Perl_croak_nocontext("panic: realloc");
124 ptr = (Malloc_t)PerlMem_realloc(where,size);
125 PERL_ALLOC_CHECK(ptr);
127 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
128 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
135 /* Can't use PerlIO to write as it allocates memory */
136 PerlLIO_write(PerlIO_fileno(Perl_error_log),
137 PL_no_mem, strlen(PL_no_mem));
144 /* safe version of system's free() */
147 Perl_safesysfree(Malloc_t where)
150 #ifdef PERL_IMPLICIT_SYS
153 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
159 /* safe version of system's calloc() */
162 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
168 if (size * count > 0xffff) {
169 PerlIO_printf(Perl_error_log,
170 "Allocation too large: %lx\n", size * count) FLUSH;
173 #endif /* HAS_64K_LIMIT */
175 if ((long)size < 0 || (long)count < 0)
176 Perl_croak_nocontext("panic: calloc");
179 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
180 PERL_ALLOC_CHECK(ptr);
181 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));
183 memset((void*)ptr, 0, size);
189 /* Can't use PerlIO to write as it allocates memory */
190 PerlLIO_write(PerlIO_fileno(Perl_error_log),
191 PL_no_mem, strlen(PL_no_mem));
198 /* These must be defined when not using Perl's malloc for binary
203 Malloc_t Perl_malloc (MEM_SIZE nbytes)
206 return (Malloc_t)PerlMem_malloc(nbytes);
209 Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size)
212 return (Malloc_t)PerlMem_calloc(elements, size);
215 Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes)
218 return (Malloc_t)PerlMem_realloc(where, nbytes);
221 Free_t Perl_mfree (Malloc_t where)
229 /* copy a string up to some (non-backslashed) delimiter, if any */
232 Perl_delimcpy(pTHX_ register char *to, register const char *toend, register const char *from, register const char *fromend, register int delim, I32 *retlen)
235 for (tolen = 0; from < fromend; from++, tolen++) {
237 if (from[1] == delim)
246 else if (*from == delim)
257 /* return ptr to little string in big string, NULL if not found */
258 /* This routine was donated by Corey Satten. */
261 Perl_instr(pTHX_ register const char *big, register const char *little)
271 register const char *s, *x;
274 for (x=big,s=little; *s; /**/ ) {
283 return (char*)(big-1);
288 /* same as instr but allow embedded nulls */
291 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
293 register const I32 first = *little;
294 register const char *littleend = lend;
296 if (!first && little >= littleend)
298 if (bigend - big < littleend - little)
300 bigend -= littleend - little++;
301 while (big <= bigend) {
302 register const char *s, *x;
305 for (x=big,s=little; s < littleend; /**/ ) {
312 return (char*)(big-1);
317 /* reverse of the above--find last substring */
320 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
322 register const char *bigbeg;
323 register const I32 first = *little;
324 register const char *littleend = lend;
326 if (!first && little >= littleend)
327 return (char*)bigend;
329 big = bigend - (littleend - little++);
330 while (big >= bigbeg) {
331 register const char *s, *x;
334 for (x=big+2,s=little; s < littleend; /**/ ) {
341 return (char*)(big+1);
346 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
348 /* As a space optimization, we do not compile tables for strings of length
349 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
350 special-cased in fbm_instr().
352 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
355 =head1 Miscellaneous Functions
357 =for apidoc fbm_compile
359 Analyses the string in order to make fast searches on it using fbm_instr()
360 -- the Boyer-Moore algorithm.
366 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
368 register const U8 *s;
374 if (flags & FBMcf_TAIL) {
375 MAGIC * const mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL;
376 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
377 if (mg && mg->mg_len >= 0)
380 s = (U8*)SvPV_force_mutable(sv, len);
381 SvUPGRADE(sv, SVt_PVBM);
382 if (len == 0) /* TAIL might be on a zero-length string. */
385 const unsigned char *sb;
386 const U8 mlen = (len>255) ? 255 : (U8)len;
389 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
390 table = (unsigned char*)(SvPVX_mutable(sv) + len + FBM_TABLE_OFFSET);
391 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
392 memset((void*)table, mlen, 256);
393 table[-1] = (U8)flags;
395 sb = s - mlen + 1; /* first char (maybe) */
397 if (table[*s] == mlen)
402 sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */
405 s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */
406 for (i = 0; i < len; i++) {
407 if (PL_freq[s[i]] < frequency) {
409 frequency = PL_freq[s[i]];
412 BmRARE(sv) = s[rarest];
413 BmPREVIOUS(sv) = (U16)rarest;
414 BmUSEFUL(sv) = 100; /* Initial value */
415 if (flags & FBMcf_TAIL)
417 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
418 BmRARE(sv),BmPREVIOUS(sv)));
421 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
422 /* If SvTAIL is actually due to \Z or \z, this gives false positives
426 =for apidoc fbm_instr
428 Returns the location of the SV in the string delimited by C<str> and
429 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
430 does not have to be fbm_compiled, but the search will not be as fast
437 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
439 register unsigned char *s;
441 register const unsigned char *little
442 = (const unsigned char *)SvPV_const(littlestr,l);
443 register STRLEN littlelen = l;
444 register const I32 multiline = flags & FBMrf_MULTILINE;
446 if ((STRLEN)(bigend - big) < littlelen) {
447 if ( SvTAIL(littlestr)
448 && ((STRLEN)(bigend - big) == littlelen - 1)
450 || (*big == *little &&
451 memEQ((char *)big, (char *)little, littlelen - 1))))
456 if (littlelen <= 2) { /* Special-cased */
458 if (littlelen == 1) {
459 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
460 /* Know that bigend != big. */
461 if (bigend[-1] == '\n')
462 return (char *)(bigend - 1);
463 return (char *) bigend;
471 if (SvTAIL(littlestr))
472 return (char *) bigend;
476 return (char*)big; /* Cannot be SvTAIL! */
479 if (SvTAIL(littlestr) && !multiline) {
480 if (bigend[-1] == '\n' && bigend[-2] == *little)
481 return (char*)bigend - 2;
482 if (bigend[-1] == *little)
483 return (char*)bigend - 1;
487 /* This should be better than FBM if c1 == c2, and almost
488 as good otherwise: maybe better since we do less indirection.
489 And we save a lot of memory by caching no table. */
490 const unsigned char c1 = little[0];
491 const unsigned char c2 = little[1];
496 while (s <= bigend) {
506 goto check_1char_anchor;
517 goto check_1char_anchor;
520 while (s <= bigend) {
525 goto check_1char_anchor;
534 check_1char_anchor: /* One char and anchor! */
535 if (SvTAIL(littlestr) && (*bigend == *little))
536 return (char *)bigend; /* bigend is already decremented. */
539 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
540 s = bigend - littlelen;
541 if (s >= big && bigend[-1] == '\n' && *s == *little
542 /* Automatically of length > 2 */
543 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
545 return (char*)s; /* how sweet it is */
548 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
550 return (char*)s + 1; /* how sweet it is */
554 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
555 char *b = ninstr((char*)big,(char*)bigend,
556 (char*)little, (char*)little + littlelen);
558 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
559 /* Chop \n from littlestr: */
560 s = bigend - littlelen + 1;
562 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
571 { /* Do actual FBM. */
572 register const unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
573 register const unsigned char *oldlittle;
575 if (littlelen > (STRLEN)(bigend - big))
577 --littlelen; /* Last char found by table lookup */
580 little += littlelen; /* last char */
586 if ((tmp = table[*s])) {
587 if ((s += tmp) < bigend)
591 else { /* less expensive than calling strncmp() */
592 register unsigned char * const olds = s;
597 if (*--s == *--little)
599 s = olds + 1; /* here we pay the price for failure */
601 if (s < bigend) /* fake up continue to outer loop */
609 if ( s == bigend && (table[-1] & FBMcf_TAIL)
610 && memEQ((char *)(bigend - littlelen),
611 (char *)(oldlittle - littlelen), littlelen) )
612 return (char*)bigend - littlelen;
617 /* start_shift, end_shift are positive quantities which give offsets
618 of ends of some substring of bigstr.
619 If "last" we want the last occurrence.
620 old_posp is the way of communication between consequent calls if
621 the next call needs to find the .
622 The initial *old_posp should be -1.
624 Note that we take into account SvTAIL, so one can get extra
625 optimizations if _ALL flag is set.
628 /* If SvTAIL is actually due to \Z or \z, this gives false positives
629 if PL_multiline. In fact if !PL_multiline the authoritative answer
630 is not supported yet. */
633 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
635 register const unsigned char *big;
637 register I32 previous;
639 register const unsigned char *little;
640 register I32 stop_pos;
641 register const unsigned char *littleend;
645 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
646 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
648 if ( BmRARE(littlestr) == '\n'
649 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
650 little = (const unsigned char *)(SvPVX_const(littlestr));
651 littleend = little + SvCUR(littlestr);
658 little = (const unsigned char *)(SvPVX_const(littlestr));
659 littleend = little + SvCUR(littlestr);
661 /* The value of pos we can start at: */
662 previous = BmPREVIOUS(littlestr);
663 big = (const unsigned char *)(SvPVX_const(bigstr));
664 /* The value of pos we can stop at: */
665 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
666 if (previous + start_shift > stop_pos) {
668 stop_pos does not include SvTAIL in the count, so this check is incorrect
669 (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19
672 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
677 while (pos < previous + start_shift) {
678 if (!(pos += PL_screamnext[pos]))
683 register const unsigned char *s, *x;
684 if (pos >= stop_pos) break;
685 if (big[pos] != first)
687 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
693 if (s == littleend) {
695 if (!last) return (char *)(big+pos);
698 } while ( pos += PL_screamnext[pos] );
700 return (char *)(big+(*old_posp));
702 if (!SvTAIL(littlestr) || (end_shift > 0))
704 /* Ignore the trailing "\n". This code is not microoptimized */
705 big = (const unsigned char *)(SvPVX_const(bigstr) + SvCUR(bigstr));
706 stop_pos = littleend - little; /* Actual littlestr len */
711 && ((stop_pos == 1) ||
712 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
718 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
720 register const U8 *a = (const U8 *)s1;
721 register const U8 *b = (const U8 *)s2;
723 if (*a != *b && *a != PL_fold[*b])
731 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
734 register const U8 *a = (const U8 *)s1;
735 register const U8 *b = (const U8 *)s2;
737 if (*a != *b && *a != PL_fold_locale[*b])
744 /* copy a string to a safe spot */
747 =head1 Memory Management
751 Perl's version of C<strdup()>. Returns a pointer to a newly allocated
752 string which is a duplicate of C<pv>. The size of the string is
753 determined by C<strlen()>. The memory allocated for the new string can
754 be freed with the C<Safefree()> function.
760 Perl_savepv(pTHX_ const char *pv)
766 const STRLEN pvlen = strlen(pv)+1;
767 Newx(newaddr,pvlen,char);
768 return memcpy(newaddr,pv,pvlen);
773 /* same thing but with a known length */
778 Perl's version of what C<strndup()> would be if it existed. Returns a
779 pointer to a newly allocated string which is a duplicate of the first
780 C<len> bytes from C<pv>. The memory allocated for the new string can be
781 freed with the C<Safefree()> function.
787 Perl_savepvn(pTHX_ const char *pv, register I32 len)
789 register char *newaddr;
791 Newx(newaddr,len+1,char);
792 /* Give a meaning to NULL pointer mainly for the use in sv_magic() */
794 /* might not be null terminated */
796 return (char *) CopyD(pv,newaddr,len,char);
799 return (char *) ZeroD(newaddr,len+1,char);
804 =for apidoc savesharedpv
806 A version of C<savepv()> which allocates the duplicate string in memory
807 which is shared between threads.
812 Perl_savesharedpv(pTHX_ const char *pv)
814 register char *newaddr;
819 pvlen = strlen(pv)+1;
820 newaddr = (char*)PerlMemShared_malloc(pvlen);
822 PerlLIO_write(PerlIO_fileno(Perl_error_log),
823 PL_no_mem, strlen(PL_no_mem));
826 return memcpy(newaddr,pv,pvlen);
832 A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from
833 the passed in SV using C<SvPV()>
839 Perl_savesvpv(pTHX_ SV *sv)
842 const char *pv = SvPV_const(sv, len);
843 register char *newaddr;
846 Newx(newaddr,len,char);
847 return (char *) CopyD(pv,newaddr,len,char);
851 /* the SV for Perl_form() and mess() is not kept in an arena */
860 return sv_2mortal(newSVpvn("",0));
865 /* Create as PVMG now, to avoid any upgrading later */
867 Newxz(any, 1, XPVMG);
868 SvFLAGS(sv) = SVt_PVMG;
869 SvANY(sv) = (void*)any;
871 SvREFCNT(sv) = 1 << 30; /* practically infinite */
876 #if defined(PERL_IMPLICIT_CONTEXT)
878 Perl_form_nocontext(const char* pat, ...)
884 retval = vform(pat, &args);
888 #endif /* PERL_IMPLICIT_CONTEXT */
891 =head1 Miscellaneous Functions
894 Takes a sprintf-style format pattern and conventional
895 (non-SV) arguments and returns the formatted string.
897 (char *) Perl_form(pTHX_ const char* pat, ...)
899 can be used any place a string (char *) is required:
901 char * s = Perl_form("%d.%d",major,minor);
903 Uses a single private buffer so if you want to format several strings you
904 must explicitly copy the earlier strings away (and free the copies when you
911 Perl_form(pTHX_ const char* pat, ...)
916 retval = vform(pat, &args);
922 Perl_vform(pTHX_ const char *pat, va_list *args)
924 SV * const sv = mess_alloc();
925 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
929 #if defined(PERL_IMPLICIT_CONTEXT)
931 Perl_mess_nocontext(const char *pat, ...)
937 retval = vmess(pat, &args);
941 #endif /* PERL_IMPLICIT_CONTEXT */
944 Perl_mess(pTHX_ const char *pat, ...)
949 retval = vmess(pat, &args);
955 S_closest_cop(pTHX_ COP *cop, const OP *o)
957 /* Look for PL_op starting from o. cop is the last COP we've seen. */
959 if (!o || o == PL_op) return cop;
961 if (o->op_flags & OPf_KIDS) {
963 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
967 /* If the OP_NEXTSTATE has been optimised away we can still use it
968 * the get the file and line number. */
970 if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE)
973 /* Keep searching, and return when we've found something. */
975 new_cop = closest_cop(cop, kid);
976 if (new_cop) return new_cop;
986 Perl_vmess(pTHX_ const char *pat, va_list *args)
988 SV *sv = mess_alloc();
989 static const char dgd[] = " during global destruction.\n";
991 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
992 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
995 * Try and find the file and line for PL_op. This will usually be
996 * PL_curcop, but it might be a cop that has been optimised away. We
997 * can try to find such a cop by searching through the optree starting
998 * from the sibling of PL_curcop.
1001 const COP *cop = closest_cop(PL_curcop, PL_curcop->op_sibling);
1002 if (!cop) cop = PL_curcop;
1005 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1006 OutCopFILE(cop), (IV)CopLINE(cop));
1007 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1008 const bool line_mode = (RsSIMPLE(PL_rs) &&
1009 SvCUR(PL_rs) == 1 && *SvPVX_const(PL_rs) == '\n');
1010 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1011 PL_last_in_gv == PL_argvgv ?
1012 "" : GvNAME(PL_last_in_gv),
1013 line_mode ? "line" : "chunk",
1014 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1016 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1022 Perl_write_to_stderr(pTHX_ const char* message, int msglen)
1028 if (PL_stderrgv && SvREFCNT(PL_stderrgv)
1029 && (io = GvIO(PL_stderrgv))
1030 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1037 SAVESPTR(PL_stderrgv);
1038 PL_stderrgv = Nullgv;
1040 PUSHSTACKi(PERLSI_MAGIC);
1044 PUSHs(SvTIED_obj((SV*)io, mg));
1045 PUSHs(sv_2mortal(newSVpvn(message, msglen)));
1047 call_method("PRINT", G_SCALAR);
1055 /* SFIO can really mess with your errno */
1056 const int e = errno;
1058 PerlIO * const serr = Perl_error_log;
1060 PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen);
1061 (void)PerlIO_flush(serr);
1068 /* Common code used by vcroak, vdie and vwarner */
1071 S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8)
1076 /* sv_2cv might call Perl_croak() */
1077 SV * const olddiehook = PL_diehook;
1081 SAVESPTR(PL_diehook);
1082 PL_diehook = Nullsv;
1083 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1085 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1092 msg = newSVpvn(message, msglen);
1093 SvFLAGS(msg) |= utf8;
1101 PUSHSTACKi(PERLSI_DIEHOOK);
1105 call_sv((SV*)cv, G_DISCARD);
1112 S_vdie_croak_common(pTHX_ const char* pat, va_list* args, STRLEN* msglen,
1116 const char *message;
1119 SV * const msv = vmess(pat, args);
1120 if (PL_errors && SvCUR(PL_errors)) {
1121 sv_catsv(PL_errors, msv);
1122 message = SvPV_const(PL_errors, *msglen);
1123 SvCUR_set(PL_errors, 0);
1126 message = SvPV_const(msv,*msglen);
1127 *utf8 = SvUTF8(msv);
1133 DEBUG_S(PerlIO_printf(Perl_debug_log,
1134 "%p: die/croak: message = %s\ndiehook = %p\n",
1135 thr, message, PL_diehook));
1137 S_vdie_common(aTHX_ message, *msglen, *utf8);
1143 Perl_vdie(pTHX_ const char* pat, va_list *args)
1145 const char *message;
1146 const int was_in_eval = PL_in_eval;
1150 DEBUG_S(PerlIO_printf(Perl_debug_log,
1151 "%p: die: curstack = %p, mainstack = %p\n",
1152 thr, PL_curstack, PL_mainstack));
1154 message = vdie_croak_common(pat, args, &msglen, &utf8);
1156 PL_restartop = die_where(message, msglen);
1157 SvFLAGS(ERRSV) |= utf8;
1158 DEBUG_S(PerlIO_printf(Perl_debug_log,
1159 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1160 thr, PL_restartop, was_in_eval, PL_top_env));
1161 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1163 return PL_restartop;
1166 #if defined(PERL_IMPLICIT_CONTEXT)
1168 Perl_die_nocontext(const char* pat, ...)
1173 va_start(args, pat);
1174 o = vdie(pat, &args);
1178 #endif /* PERL_IMPLICIT_CONTEXT */
1181 Perl_die(pTHX_ const char* pat, ...)
1185 va_start(args, pat);
1186 o = vdie(pat, &args);
1192 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1194 const char *message;
1198 message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8);
1201 PL_restartop = die_where(message, msglen);
1202 SvFLAGS(ERRSV) |= utf8;
1206 message = SvPVx_const(ERRSV, msglen);
1208 write_to_stderr(message, msglen);
1212 #if defined(PERL_IMPLICIT_CONTEXT)
1214 Perl_croak_nocontext(const char *pat, ...)
1218 va_start(args, pat);
1223 #endif /* PERL_IMPLICIT_CONTEXT */
1226 =head1 Warning and Dieing
1230 This is the XSUB-writer's interface to Perl's C<die> function.
1231 Normally call this function the same way you call the C C<printf>
1232 function. Calling C<croak> returns control directly to Perl,
1233 sidestepping the normal C order of execution. See C<warn>.
1235 If you want to throw an exception object, assign the object to
1236 C<$@> and then pass C<Nullch> to croak():
1238 errsv = get_sv("@", TRUE);
1239 sv_setsv(errsv, exception_object);
1246 Perl_croak(pTHX_ const char *pat, ...)
1249 va_start(args, pat);
1256 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1260 SV * const msv = vmess(pat, args);
1261 const I32 utf8 = SvUTF8(msv);
1262 const char * const message = SvPV_const(msv, msglen);
1265 /* sv_2cv might call Perl_warn() */
1266 SV * const oldwarnhook = PL_warnhook;
1272 SAVESPTR(PL_warnhook);
1273 PL_warnhook = Nullsv;
1274 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1276 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1281 SAVESPTR(PL_warnhook);
1282 PL_warnhook = Nullsv;
1284 msg = newSVpvn(message, msglen);
1285 SvFLAGS(msg) |= utf8;
1289 PUSHSTACKi(PERLSI_WARNHOOK);
1293 call_sv((SV*)cv, G_DISCARD);
1300 write_to_stderr(message, msglen);
1303 #if defined(PERL_IMPLICIT_CONTEXT)
1305 Perl_warn_nocontext(const char *pat, ...)
1309 va_start(args, pat);
1313 #endif /* PERL_IMPLICIT_CONTEXT */
1318 This is the XSUB-writer's interface to Perl's C<warn> function. Call this
1319 function the same way you call the C C<printf> function. See C<croak>.
1325 Perl_warn(pTHX_ const char *pat, ...)
1328 va_start(args, pat);
1333 #if defined(PERL_IMPLICIT_CONTEXT)
1335 Perl_warner_nocontext(U32 err, const char *pat, ...)
1339 va_start(args, pat);
1340 vwarner(err, pat, &args);
1343 #endif /* PERL_IMPLICIT_CONTEXT */
1346 Perl_warner(pTHX_ U32 err, const char* pat,...)
1349 va_start(args, pat);
1350 vwarner(err, pat, &args);
1355 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1359 SV * const msv = vmess(pat, args);
1361 const char *message = SvPV_const(msv, msglen);
1362 const I32 utf8 = SvUTF8(msv);
1366 S_vdie_common(aTHX_ message, msglen, utf8);
1369 PL_restartop = die_where(message, msglen);
1370 SvFLAGS(ERRSV) |= utf8;
1373 write_to_stderr(message, msglen);
1377 Perl_vwarn(aTHX_ pat, args);
1381 /* implements the ckWARN? macros */
1384 Perl_ckwarn(pTHX_ U32 w)
1389 && PL_curcop->cop_warnings != pWARN_NONE
1391 PL_curcop->cop_warnings == pWARN_ALL
1392 || isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w))
1393 || (unpackWARN2(w) &&
1394 isWARN_on(PL_curcop->cop_warnings, unpackWARN2(w)))
1395 || (unpackWARN3(w) &&
1396 isWARN_on(PL_curcop->cop_warnings, unpackWARN3(w)))
1397 || (unpackWARN4(w) &&
1398 isWARN_on(PL_curcop->cop_warnings, unpackWARN4(w)))
1403 isLEXWARN_off && PL_dowarn & G_WARN_ON
1408 /* implements the ckWARN?_d macro */
1411 Perl_ckwarn_d(pTHX_ U32 w)
1415 || PL_curcop->cop_warnings == pWARN_ALL
1417 PL_curcop->cop_warnings != pWARN_NONE
1419 isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w))
1420 || (unpackWARN2(w) &&
1421 isWARN_on(PL_curcop->cop_warnings, unpackWARN2(w)))
1422 || (unpackWARN3(w) &&
1423 isWARN_on(PL_curcop->cop_warnings, unpackWARN3(w)))
1424 || (unpackWARN4(w) &&
1425 isWARN_on(PL_curcop->cop_warnings, unpackWARN4(w)))
1433 /* since we've already done strlen() for both nam and val
1434 * we can use that info to make things faster than
1435 * sprintf(s, "%s=%s", nam, val)
1437 #define my_setenv_format(s, nam, nlen, val, vlen) \
1438 Copy(nam, s, nlen, char); \
1440 Copy(val, s+(nlen+1), vlen, char); \
1441 *(s+(nlen+1+vlen)) = '\0'
1443 #ifdef USE_ENVIRON_ARRAY
1444 /* VMS' my_setenv() is in vms.c */
1445 #if !defined(WIN32) && !defined(NETWARE)
1447 Perl_my_setenv(pTHX_ const char *nam, const char *val)
1451 /* only parent thread can modify process environment */
1452 if (PL_curinterp == aTHX)
1455 #ifndef PERL_USE_SAFE_PUTENV
1456 if (!PL_use_safe_putenv) {
1457 /* most putenv()s leak, so we manipulate environ directly */
1458 register I32 i=setenv_getix(nam); /* where does it go? */
1461 if (environ == PL_origenviron) { /* need we copy environment? */
1466 for (max = i; environ[max]; max++) ;
1467 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1468 for (j=0; j<max; j++) { /* copy environment */
1469 const int len = strlen(environ[j]);
1470 tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char));
1471 Copy(environ[j], tmpenv[j], len+1, char);
1473 tmpenv[max] = Nullch;
1474 environ = tmpenv; /* tell exec where it is now */
1477 safesysfree(environ[i]);
1478 while (environ[i]) {
1479 environ[i] = environ[i+1];
1484 if (!environ[i]) { /* does not exist yet */
1485 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1486 environ[i+1] = Nullch; /* make sure it's null terminated */
1489 safesysfree(environ[i]);
1493 environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char));
1494 /* all that work just for this */
1495 my_setenv_format(environ[i], nam, nlen, val, vlen);
1498 # if defined(__CYGWIN__) || defined(EPOC) || defined(__SYMBIAN32__)
1499 # if defined(HAS_UNSETENV)
1501 (void)unsetenv(nam);
1503 (void)setenv(nam, val, 1);
1505 # else /* ! HAS_UNSETENV */
1506 (void)setenv(nam, val, 1);
1507 # endif /* HAS_UNSETENV */
1509 # if defined(HAS_UNSETENV)
1511 (void)unsetenv(nam);
1513 int nlen = strlen(nam);
1514 int vlen = strlen(val);
1516 (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char));
1517 my_setenv_format(new_env, nam, nlen, val, vlen);
1518 (void)putenv(new_env);
1520 # else /* ! HAS_UNSETENV */
1522 int nlen = strlen(nam), vlen;
1527 new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char));
1528 /* all that work just for this */
1529 my_setenv_format(new_env, nam, nlen, val, vlen);
1530 (void)putenv(new_env);
1531 # endif /* HAS_UNSETENV */
1532 # endif /* __CYGWIN__ */
1533 #ifndef PERL_USE_SAFE_PUTENV
1539 #else /* WIN32 || NETWARE */
1542 Perl_my_setenv(pTHX_ const char *nam, const char *val)
1545 register char *envstr;
1546 const int nlen = strlen(nam);
1553 Newx(envstr, nlen+vlen+2, char);
1554 my_setenv_format(envstr, nam, nlen, val, vlen);
1555 (void)PerlEnv_putenv(envstr);
1559 #endif /* WIN32 || NETWARE */
1563 Perl_setenv_getix(pTHX_ const char *nam)
1566 register const I32 len = strlen(nam);
1568 for (i = 0; environ[i]; i++) {
1571 strnicmp(environ[i],nam,len) == 0
1573 strnEQ(environ[i],nam,len)
1575 && environ[i][len] == '=')
1576 break; /* strnEQ must come first to avoid */
1577 } /* potential SEGV's */
1580 #endif /* !PERL_MICRO */
1582 #endif /* !VMS && !EPOC*/
1584 #ifdef UNLINK_ALL_VERSIONS
1586 Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */
1590 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
1595 /* this is a drop-in replacement for bcopy() */
1596 #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY))
1598 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
1600 char * const retval = to;
1602 if (from - to >= 0) {
1610 *(--to) = *(--from);
1616 /* this is a drop-in replacement for memset() */
1619 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
1621 char * const retval = loc;
1629 /* this is a drop-in replacement for bzero() */
1630 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
1632 Perl_my_bzero(register char *loc, register I32 len)
1634 char * const retval = loc;
1642 /* this is a drop-in replacement for memcmp() */
1643 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
1645 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
1647 register const U8 *a = (const U8 *)s1;
1648 register const U8 *b = (const U8 *)s2;
1652 if ((tmp = *a++ - *b++))
1657 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
1661 #ifdef USE_CHAR_VSPRINTF
1666 vsprintf(char *dest, const char *pat, char *args)
1670 fakebuf._ptr = dest;
1671 fakebuf._cnt = 32767;
1675 fakebuf._flag = _IOWRT|_IOSTRG;
1676 _doprnt(pat, args, &fakebuf); /* what a kludge */
1677 (void)putc('\0', &fakebuf);
1678 #ifdef USE_CHAR_VSPRINTF
1681 return 0; /* perl doesn't use return value */
1685 #endif /* HAS_VPRINTF */
1688 #if BYTEORDER != 0x4321
1690 Perl_my_swap(pTHX_ short s)
1692 #if (BYTEORDER & 1) == 0
1695 result = ((s & 255) << 8) + ((s >> 8) & 255);
1703 Perl_my_htonl(pTHX_ long l)
1707 char c[sizeof(long)];
1710 #if BYTEORDER == 0x1234
1711 u.c[0] = (l >> 24) & 255;
1712 u.c[1] = (l >> 16) & 255;
1713 u.c[2] = (l >> 8) & 255;
1717 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1718 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
1723 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1724 u.c[o & 0xf] = (l >> s) & 255;
1732 Perl_my_ntohl(pTHX_ long l)
1736 char c[sizeof(long)];
1739 #if BYTEORDER == 0x1234
1740 u.c[0] = (l >> 24) & 255;
1741 u.c[1] = (l >> 16) & 255;
1742 u.c[2] = (l >> 8) & 255;
1746 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1747 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
1754 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1755 l |= (u.c[o & 0xf] & 255) << s;
1762 #endif /* BYTEORDER != 0x4321 */
1766 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1767 * If these functions are defined,
1768 * the BYTEORDER is neither 0x1234 nor 0x4321.
1769 * However, this is not assumed.
1773 #define HTOLE(name,type) \
1775 name (register type n) \
1779 char c[sizeof(type)]; \
1782 register I32 s = 0; \
1783 for (i = 0; i < sizeof(u.c); i++, s += 8) { \
1784 u.c[i] = (n >> s) & 0xFF; \
1789 #define LETOH(name,type) \
1791 name (register type n) \
1795 char c[sizeof(type)]; \
1798 register I32 s = 0; \
1801 for (i = 0; i < sizeof(u.c); i++, s += 8) { \
1802 n |= ((type)(u.c[i] & 0xFF)) << s; \
1808 * Big-endian byte order functions.
1811 #define HTOBE(name,type) \
1813 name (register type n) \
1817 char c[sizeof(type)]; \
1820 register I32 s = 8*(sizeof(u.c)-1); \
1821 for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
1822 u.c[i] = (n >> s) & 0xFF; \
1827 #define BETOH(name,type) \
1829 name (register type n) \
1833 char c[sizeof(type)]; \
1836 register I32 s = 8*(sizeof(u.c)-1); \
1839 for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
1840 n |= ((type)(u.c[i] & 0xFF)) << s; \
1846 * If we just can't do it...
1849 #define NOT_AVAIL(name,type) \
1851 name (register type n) \
1853 Perl_croak_nocontext(#name "() not available"); \
1854 return n; /* not reached */ \
1858 #if defined(HAS_HTOVS) && !defined(htovs)
1861 #if defined(HAS_HTOVL) && !defined(htovl)
1864 #if defined(HAS_VTOHS) && !defined(vtohs)
1867 #if defined(HAS_VTOHL) && !defined(vtohl)
1871 #ifdef PERL_NEED_MY_HTOLE16
1873 HTOLE(Perl_my_htole16,U16)
1875 NOT_AVAIL(Perl_my_htole16,U16)
1878 #ifdef PERL_NEED_MY_LETOH16
1880 LETOH(Perl_my_letoh16,U16)
1882 NOT_AVAIL(Perl_my_letoh16,U16)
1885 #ifdef PERL_NEED_MY_HTOBE16
1887 HTOBE(Perl_my_htobe16,U16)
1889 NOT_AVAIL(Perl_my_htobe16,U16)
1892 #ifdef PERL_NEED_MY_BETOH16
1894 BETOH(Perl_my_betoh16,U16)
1896 NOT_AVAIL(Perl_my_betoh16,U16)
1900 #ifdef PERL_NEED_MY_HTOLE32
1902 HTOLE(Perl_my_htole32,U32)
1904 NOT_AVAIL(Perl_my_htole32,U32)
1907 #ifdef PERL_NEED_MY_LETOH32
1909 LETOH(Perl_my_letoh32,U32)
1911 NOT_AVAIL(Perl_my_letoh32,U32)
1914 #ifdef PERL_NEED_MY_HTOBE32
1916 HTOBE(Perl_my_htobe32,U32)
1918 NOT_AVAIL(Perl_my_htobe32,U32)
1921 #ifdef PERL_NEED_MY_BETOH32
1923 BETOH(Perl_my_betoh32,U32)
1925 NOT_AVAIL(Perl_my_betoh32,U32)
1929 #ifdef PERL_NEED_MY_HTOLE64
1931 HTOLE(Perl_my_htole64,U64)
1933 NOT_AVAIL(Perl_my_htole64,U64)
1936 #ifdef PERL_NEED_MY_LETOH64
1938 LETOH(Perl_my_letoh64,U64)
1940 NOT_AVAIL(Perl_my_letoh64,U64)
1943 #ifdef PERL_NEED_MY_HTOBE64
1945 HTOBE(Perl_my_htobe64,U64)
1947 NOT_AVAIL(Perl_my_htobe64,U64)
1950 #ifdef PERL_NEED_MY_BETOH64
1952 BETOH(Perl_my_betoh64,U64)
1954 NOT_AVAIL(Perl_my_betoh64,U64)
1958 #ifdef PERL_NEED_MY_HTOLES
1959 HTOLE(Perl_my_htoles,short)
1961 #ifdef PERL_NEED_MY_LETOHS
1962 LETOH(Perl_my_letohs,short)
1964 #ifdef PERL_NEED_MY_HTOBES
1965 HTOBE(Perl_my_htobes,short)
1967 #ifdef PERL_NEED_MY_BETOHS
1968 BETOH(Perl_my_betohs,short)
1971 #ifdef PERL_NEED_MY_HTOLEI
1972 HTOLE(Perl_my_htolei,int)
1974 #ifdef PERL_NEED_MY_LETOHI
1975 LETOH(Perl_my_letohi,int)
1977 #ifdef PERL_NEED_MY_HTOBEI
1978 HTOBE(Perl_my_htobei,int)
1980 #ifdef PERL_NEED_MY_BETOHI
1981 BETOH(Perl_my_betohi,int)
1984 #ifdef PERL_NEED_MY_HTOLEL
1985 HTOLE(Perl_my_htolel,long)
1987 #ifdef PERL_NEED_MY_LETOHL
1988 LETOH(Perl_my_letohl,long)
1990 #ifdef PERL_NEED_MY_HTOBEL
1991 HTOBE(Perl_my_htobel,long)
1993 #ifdef PERL_NEED_MY_BETOHL
1994 BETOH(Perl_my_betohl,long)
1998 Perl_my_swabn(void *ptr, int n)
2000 register char *s = (char *)ptr;
2001 register char *e = s + (n-1);
2004 for (n /= 2; n > 0; s++, e--, n--) {
2012 Perl_my_popen_list(pTHX_ char *mode, int n, SV **args)
2014 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE)
2016 register I32 This, that;
2022 PERL_FLUSHALL_FOR_CHILD;
2023 This = (*mode == 'w');
2027 taint_proper("Insecure %s%s", "EXEC");
2029 if (PerlProc_pipe(p) < 0)
2031 /* Try for another pipe pair for error return */
2032 if (PerlProc_pipe(pp) >= 0)
2034 while ((pid = PerlProc_fork()) < 0) {
2035 if (errno != EAGAIN) {
2036 PerlLIO_close(p[This]);
2037 PerlLIO_close(p[that]);
2039 PerlLIO_close(pp[0]);
2040 PerlLIO_close(pp[1]);
2052 /* Close parent's end of error status pipe (if any) */
2054 PerlLIO_close(pp[0]);
2055 #if defined(HAS_FCNTL) && defined(F_SETFD)
2056 /* Close error pipe automatically if exec works */
2057 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2060 /* Now dup our end of _the_ pipe to right position */
2061 if (p[THIS] != (*mode == 'r')) {
2062 PerlLIO_dup2(p[THIS], *mode == 'r');
2063 PerlLIO_close(p[THIS]);
2064 if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */
2065 PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */
2068 PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */
2069 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2070 /* No automatic close - do it by hand */
2077 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) {
2083 do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes);
2089 do_execfree(); /* free any memory malloced by child on fork */
2091 PerlLIO_close(pp[1]);
2092 /* Keep the lower of the two fd numbers */
2093 if (p[that] < p[This]) {
2094 PerlLIO_dup2(p[This], p[that]);
2095 PerlLIO_close(p[This]);
2099 PerlLIO_close(p[that]); /* close child's end of pipe */
2102 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2104 SvUPGRADE(sv,SVt_IV);
2106 PL_forkprocess = pid;
2107 /* If we managed to get status pipe check for exec fail */
2108 if (did_pipes && pid > 0) {
2112 while (n < sizeof(int)) {
2113 n1 = PerlLIO_read(pp[0],
2114 (void*)(((char*)&errkid)+n),
2120 PerlLIO_close(pp[0]);
2122 if (n) { /* Error */
2124 PerlLIO_close(p[This]);
2125 if (n != sizeof(int))
2126 Perl_croak(aTHX_ "panic: kid popen errno read");
2128 pid2 = wait4pid(pid, &status, 0);
2129 } while (pid2 == -1 && errno == EINTR);
2130 errno = errkid; /* Propagate errno from kid */
2135 PerlLIO_close(pp[0]);
2136 return PerlIO_fdopen(p[This], mode);
2138 Perl_croak(aTHX_ "List form of piped open not implemented");
2139 return (PerlIO *) NULL;
2143 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2144 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2146 Perl_my_popen(pTHX_ const char *cmd, const char *mode)
2149 register I32 This, that;
2152 const I32 doexec = !(*cmd == '-' && cmd[1] == '\0');
2156 PERL_FLUSHALL_FOR_CHILD;
2159 return my_syspopen(aTHX_ cmd,mode);
2162 This = (*mode == 'w');
2164 if (doexec && PL_tainting) {
2166 taint_proper("Insecure %s%s", "EXEC");
2168 if (PerlProc_pipe(p) < 0)
2170 if (doexec && PerlProc_pipe(pp) >= 0)
2172 while ((pid = PerlProc_fork()) < 0) {
2173 if (errno != EAGAIN) {
2174 PerlLIO_close(p[This]);
2175 PerlLIO_close(p[that]);
2177 PerlLIO_close(pp[0]);
2178 PerlLIO_close(pp[1]);
2181 Perl_croak(aTHX_ "Can't fork");
2194 PerlLIO_close(pp[0]);
2195 #if defined(HAS_FCNTL) && defined(F_SETFD)
2196 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2199 if (p[THIS] != (*mode == 'r')) {
2200 PerlLIO_dup2(p[THIS], *mode == 'r');
2201 PerlLIO_close(p[THIS]);
2202 if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */
2203 PerlLIO_close(p[THAT]);
2206 PerlLIO_close(p[THAT]);
2209 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2216 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2221 /* may or may not use the shell */
2222 do_exec3(cmd, pp[1], did_pipes);
2225 #endif /* defined OS2 */
2226 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
2227 SvREADONLY_off(GvSV(tmpgv));
2228 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2229 SvREADONLY_on(GvSV(tmpgv));
2231 #ifdef THREADS_HAVE_PIDS
2232 PL_ppid = (IV)getppid();
2235 #ifdef PERL_USES_PL_PIDSTATUS
2236 hv_clear(PL_pidstatus); /* we have no children */
2242 do_execfree(); /* free any memory malloced by child on vfork */
2244 PerlLIO_close(pp[1]);
2245 if (p[that] < p[This]) {
2246 PerlLIO_dup2(p[This], p[that]);
2247 PerlLIO_close(p[This]);
2251 PerlLIO_close(p[that]);
2254 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2256 SvUPGRADE(sv,SVt_IV);
2258 PL_forkprocess = pid;
2259 if (did_pipes && pid > 0) {
2263 while (n < sizeof(int)) {
2264 n1 = PerlLIO_read(pp[0],
2265 (void*)(((char*)&errkid)+n),
2271 PerlLIO_close(pp[0]);
2273 if (n) { /* Error */
2275 PerlLIO_close(p[This]);
2276 if (n != sizeof(int))
2277 Perl_croak(aTHX_ "panic: kid popen errno read");
2279 pid2 = wait4pid(pid, &status, 0);
2280 } while (pid2 == -1 && errno == EINTR);
2281 errno = errkid; /* Propagate errno from kid */
2286 PerlLIO_close(pp[0]);
2287 return PerlIO_fdopen(p[This], mode);
2290 #if defined(atarist) || defined(EPOC)
2293 Perl_my_popen(pTHX_ char *cmd, char *mode)
2295 PERL_FLUSHALL_FOR_CHILD;
2296 /* Call system's popen() to get a FILE *, then import it.
2297 used 0 for 2nd parameter to PerlIO_importFILE;
2300 return PerlIO_importFILE(popen(cmd, mode), 0);
2304 FILE *djgpp_popen();
2306 Perl_my_popen(pTHX_ char *cmd, char *mode)
2308 PERL_FLUSHALL_FOR_CHILD;
2309 /* Call system's popen() to get a FILE *, then import it.
2310 used 0 for 2nd parameter to PerlIO_importFILE;
2313 return PerlIO_importFILE(djgpp_popen(cmd, mode), 0);
2318 #endif /* !DOSISH */
2320 /* this is called in parent before the fork() */
2322 Perl_atfork_lock(void)
2325 #if defined(USE_ITHREADS)
2326 /* locks must be held in locking order (if any) */
2328 MUTEX_LOCK(&PL_malloc_mutex);
2334 /* this is called in both parent and child after the fork() */
2336 Perl_atfork_unlock(void)
2339 #if defined(USE_ITHREADS)
2340 /* locks must be released in same order as in atfork_lock() */
2342 MUTEX_UNLOCK(&PL_malloc_mutex);
2351 #if defined(HAS_FORK)
2353 #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK)
2358 /* atfork_lock() and atfork_unlock() are installed as pthread_atfork()
2359 * handlers elsewhere in the code */
2364 /* this "canna happen" since nothing should be calling here if !HAS_FORK */
2365 Perl_croak_nocontext("fork() not available");
2367 #endif /* HAS_FORK */
2372 Perl_dump_fds(pTHX_ char *s)
2377 PerlIO_printf(Perl_debug_log,"%s", s);
2378 for (fd = 0; fd < 32; fd++) {
2379 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2380 PerlIO_printf(Perl_debug_log," %d",fd);
2382 PerlIO_printf(Perl_debug_log,"\n");
2385 #endif /* DUMP_FDS */
2389 dup2(int oldfd, int newfd)
2391 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2394 PerlLIO_close(newfd);
2395 return fcntl(oldfd, F_DUPFD, newfd);
2397 #define DUP2_MAX_FDS 256
2398 int fdtmp[DUP2_MAX_FDS];
2404 PerlLIO_close(newfd);
2405 /* good enough for low fd's... */
2406 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2407 if (fdx >= DUP2_MAX_FDS) {
2415 PerlLIO_close(fdtmp[--fdx]);
2422 #ifdef HAS_SIGACTION
2424 #ifdef MACOS_TRADITIONAL
2425 /* We don't want restart behavior on MacOS */
2430 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2433 struct sigaction act, oact;
2436 /* only "parent" interpreter can diddle signals */
2437 if (PL_curinterp != aTHX)
2438 return (Sighandler_t) SIG_ERR;
2441 act.sa_handler = (void(*)(int))handler;
2442 sigemptyset(&act.sa_mask);
2445 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2446 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2448 #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */
2449 if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN)
2450 act.sa_flags |= SA_NOCLDWAIT;
2452 if (sigaction(signo, &act, &oact) == -1)
2453 return (Sighandler_t) SIG_ERR;
2455 return (Sighandler_t) oact.sa_handler;
2459 Perl_rsignal_state(pTHX_ int signo)
2461 struct sigaction oact;
2463 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2464 return (Sighandler_t) SIG_ERR;
2466 return (Sighandler_t) oact.sa_handler;
2470 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2473 struct sigaction act;
2476 /* only "parent" interpreter can diddle signals */
2477 if (PL_curinterp != aTHX)
2481 act.sa_handler = (void(*)(int))handler;
2482 sigemptyset(&act.sa_mask);
2485 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2486 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2488 #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */
2489 if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN)
2490 act.sa_flags |= SA_NOCLDWAIT;
2492 return sigaction(signo, &act, save);
2496 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2500 /* only "parent" interpreter can diddle signals */
2501 if (PL_curinterp != aTHX)
2505 return sigaction(signo, save, (struct sigaction *)NULL);
2508 #else /* !HAS_SIGACTION */
2511 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2513 #if defined(USE_ITHREADS) && !defined(WIN32)
2514 /* only "parent" interpreter can diddle signals */
2515 if (PL_curinterp != aTHX)
2516 return (Sighandler_t) SIG_ERR;
2519 return PerlProc_signal(signo, handler);
2531 Perl_rsignal_state(pTHX_ int signo)
2534 Sighandler_t oldsig;
2536 #if defined(USE_ITHREADS) && !defined(WIN32)
2537 /* only "parent" interpreter can diddle signals */
2538 if (PL_curinterp != aTHX)
2539 return (Sighandler_t) SIG_ERR;
2543 oldsig = PerlProc_signal(signo, sig_trap);
2544 PerlProc_signal(signo, oldsig);
2546 PerlProc_kill(PerlProc_getpid(), signo);
2551 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2553 #if defined(USE_ITHREADS) && !defined(WIN32)
2554 /* only "parent" interpreter can diddle signals */
2555 if (PL_curinterp != aTHX)
2558 *save = PerlProc_signal(signo, handler);
2559 return (*save == (Sighandler_t) SIG_ERR) ? -1 : 0;
2563 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2565 #if defined(USE_ITHREADS) && !defined(WIN32)
2566 /* only "parent" interpreter can diddle signals */
2567 if (PL_curinterp != aTHX)
2570 return (PerlProc_signal(signo, *save) == (Sighandler_t) SIG_ERR) ? -1 : 0;
2573 #endif /* !HAS_SIGACTION */
2574 #endif /* !PERL_MICRO */
2576 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2577 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2579 Perl_my_pclose(pTHX_ PerlIO *ptr)
2581 Sigsave_t hstat, istat, qstat;
2587 int saved_errno = 0;
2589 int saved_win32_errno;
2593 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2595 pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1;
2597 *svp = &PL_sv_undef;
2599 if (pid == -1) { /* Opened by popen. */
2600 return my_syspclose(ptr);
2603 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2604 saved_errno = errno;
2606 saved_win32_errno = GetLastError();
2610 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2613 rsignal_save(SIGHUP, (Sighandler_t) SIG_IGN, &hstat);
2614 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &istat);
2615 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qstat);
2618 pid2 = wait4pid(pid, &status, 0);
2619 } while (pid2 == -1 && errno == EINTR);
2621 rsignal_restore(SIGHUP, &hstat);
2622 rsignal_restore(SIGINT, &istat);
2623 rsignal_restore(SIGQUIT, &qstat);
2626 SETERRNO(saved_errno, 0);
2629 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2631 #endif /* !DOSISH */
2633 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL)
2635 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2640 #ifdef PERL_USES_PL_PIDSTATUS
2642 char spid[TYPE_CHARS(IV)];
2646 const I32 len = my_sprintf(spid, "%"IVdf, (IV)pid);
2648 svp = hv_fetch(PL_pidstatus,spid,len,FALSE);
2649 if (svp && *svp != &PL_sv_undef) {
2650 *statusp = SvIVX(*svp);
2651 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2658 hv_iterinit(PL_pidstatus);
2659 if ((entry = hv_iternext(PL_pidstatus))) {
2660 SV *sv = hv_iterval(PL_pidstatus,entry);
2663 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2664 *statusp = SvIVX(sv);
2665 len = my_sprintf(spid, "%"IVdf, (IV)pid);
2666 /* The hash iterator is currently on this entry, so simply
2667 calling hv_delete would trigger the lazy delete, which on
2668 aggregate does more work, beacuse next call to hv_iterinit()
2669 would spot the flag, and have to call the delete routine,
2670 while in the meantime any new entries can't re-use that
2672 hv_iterinit(PL_pidstatus);
2673 (void)hv_delete(PL_pidstatus,spid,len,G_DISCARD);
2680 # ifdef HAS_WAITPID_RUNTIME
2681 if (!HAS_WAITPID_RUNTIME)
2684 result = PerlProc_waitpid(pid,statusp,flags);
2687 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2688 result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2691 #ifdef PERL_USES_PL_PIDSTATUS
2692 #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME)
2697 Perl_croak(aTHX_ "Can't do waitpid with flags");
2699 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2700 pidgone(result,*statusp);
2706 #if defined(HAS_WAITPID) || defined(HAS_WAIT4)
2709 if (result < 0 && errno == EINTR) {
2714 #endif /* !DOSISH || OS2 || WIN32 || NETWARE */
2716 #ifdef PERL_USES_PL_PIDSTATUS
2718 Perl_pidgone(pTHX_ Pid_t pid, int status)
2721 char spid[TYPE_CHARS(IV)];
2722 const size_t len = my_sprintf(spid, "%"IVdf, (IV)pid);
2724 sv = *hv_fetch(PL_pidstatus,spid,len,TRUE);
2725 SvUPGRADE(sv,SVt_IV);
2726 SvIV_set(sv, status);
2731 #if defined(atarist) || defined(OS2) || defined(EPOC)
2734 int /* Cannot prototype with I32
2736 my_syspclose(PerlIO *ptr)
2739 Perl_my_pclose(pTHX_ PerlIO *ptr)
2742 /* Needs work for PerlIO ! */
2743 FILE *f = PerlIO_findFILE(ptr);
2744 I32 result = pclose(f);
2745 PerlIO_releaseFILE(ptr,f);
2753 Perl_my_pclose(pTHX_ PerlIO *ptr)
2755 /* Needs work for PerlIO ! */
2756 FILE *f = PerlIO_findFILE(ptr);
2757 I32 result = djgpp_pclose(f);
2758 result = (result << 8) & 0xff00;
2759 PerlIO_releaseFILE(ptr,f);
2765 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2768 register const char *frombase = from;
2771 register const char c = *from;
2776 while (count-- > 0) {
2777 for (todo = len; todo > 0; todo--) {
2786 Perl_same_dirent(pTHX_ const char *a, const char *b)
2788 char *fa = strrchr(a,'/');
2789 char *fb = strrchr(b,'/');
2792 SV *tmpsv = sv_newmortal();
2805 sv_setpvn(tmpsv, ".", 1);
2807 sv_setpvn(tmpsv, a, fa - a);
2808 if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf1) < 0)
2811 sv_setpvn(tmpsv, ".", 1);
2813 sv_setpvn(tmpsv, b, fb - b);
2814 if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf2) < 0)
2816 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2817 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2819 #endif /* !HAS_RENAME */
2822 Perl_find_script(pTHX_ const char *scriptname, bool dosearch,
2823 const char *const *const search_ext, I32 flags)
2825 const char *xfound = Nullch;
2826 char *xfailed = Nullch;
2827 char tmpbuf[MAXPATHLEN];
2831 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2832 # define SEARCH_EXTS ".bat", ".cmd", NULL
2833 # define MAX_EXT_LEN 4
2836 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2837 # define MAX_EXT_LEN 4
2840 # define SEARCH_EXTS ".pl", ".com", NULL
2841 # define MAX_EXT_LEN 4
2843 /* additional extensions to try in each dir if scriptname not found */
2845 const char *const exts[] = { SEARCH_EXTS };
2846 const char *const *const ext = search_ext ? search_ext : exts;
2847 int extidx = 0, i = 0;
2848 const char *curext = Nullch;
2850 PERL_UNUSED_ARG(search_ext);
2851 # define MAX_EXT_LEN 0
2855 * If dosearch is true and if scriptname does not contain path
2856 * delimiters, search the PATH for scriptname.
2858 * If SEARCH_EXTS is also defined, will look for each
2859 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2860 * while searching the PATH.
2862 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2863 * proceeds as follows:
2864 * If DOSISH or VMSISH:
2865 * + look for ./scriptname{,.foo,.bar}
2866 * + search the PATH for scriptname{,.foo,.bar}
2869 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2870 * this will not look in '.' if it's not in the PATH)
2875 # ifdef ALWAYS_DEFTYPES
2876 len = strlen(scriptname);
2877 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2878 int hasdir, idx = 0, deftypes = 1;
2881 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2884 int hasdir, idx = 0, deftypes = 1;
2887 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2889 /* The first time through, just add SEARCH_EXTS to whatever we
2890 * already have, so we can check for default file types. */
2892 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
2898 if ((strlen(tmpbuf) + strlen(scriptname)
2899 + MAX_EXT_LEN) >= sizeof tmpbuf)
2900 continue; /* don't search dir with too-long name */
2901 strcat(tmpbuf, scriptname);
2905 if (strEQ(scriptname, "-"))
2907 if (dosearch) { /* Look in '.' first. */
2908 const char *cur = scriptname;
2910 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2912 if (strEQ(ext[i++],curext)) {
2913 extidx = -1; /* already has an ext */
2918 DEBUG_p(PerlIO_printf(Perl_debug_log,
2919 "Looking for %s\n",cur));
2920 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2921 && !S_ISDIR(PL_statbuf.st_mode)) {
2929 if (cur == scriptname) {
2930 len = strlen(scriptname);
2931 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
2933 /* FIXME? Convert to memcpy */
2934 cur = strcpy(tmpbuf, scriptname);
2936 } while (extidx >= 0 && ext[extidx] /* try an extension? */
2937 && strcpy(tmpbuf+len, ext[extidx++]));
2942 #ifdef MACOS_TRADITIONAL
2943 if (dosearch && !strchr(scriptname, ':') &&
2944 (s = PerlEnv_getenv("Commands")))
2946 if (dosearch && !strchr(scriptname, '/')
2948 && !strchr(scriptname, '\\')
2950 && (s = PerlEnv_getenv("PATH")))
2955 PL_bufend = s + strlen(s);
2956 while (s < PL_bufend) {
2957 #ifdef MACOS_TRADITIONAL
2958 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
2962 #if defined(atarist) || defined(DOSISH)
2967 && *s != ';'; len++, s++) {
2968 if (len < sizeof tmpbuf)
2971 if (len < sizeof tmpbuf)
2973 #else /* ! (atarist || DOSISH) */
2974 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
2977 #endif /* ! (atarist || DOSISH) */
2978 #endif /* MACOS_TRADITIONAL */
2981 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
2982 continue; /* don't search dir with too-long name */
2983 #ifdef MACOS_TRADITIONAL
2984 if (len && tmpbuf[len - 1] != ':')
2985 tmpbuf[len++] = ':';
2988 # if defined(atarist) || defined(__MINT__) || defined(DOSISH)
2989 && tmpbuf[len - 1] != '/'
2990 && tmpbuf[len - 1] != '\\'
2993 tmpbuf[len++] = '/';
2994 if (len == 2 && tmpbuf[0] == '.')
2997 /* FIXME? Convert to memcpy by storing previous strlen(scriptname)
2999 (void)strcpy(tmpbuf + len, scriptname);
3003 len = strlen(tmpbuf);
3004 if (extidx > 0) /* reset after previous loop */
3008 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3009 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3010 if (S_ISDIR(PL_statbuf.st_mode)) {
3014 } while ( retval < 0 /* not there */
3015 && extidx>=0 && ext[extidx] /* try an extension? */
3016 && strcpy(tmpbuf+len, ext[extidx++])
3021 if (S_ISREG(PL_statbuf.st_mode)
3022 && cando(S_IRUSR,TRUE,&PL_statbuf)
3023 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3024 && cando(S_IXUSR,TRUE,&PL_statbuf)
3028 xfound = tmpbuf; /* bingo! */
3032 xfailed = savepv(tmpbuf);
3035 if (!xfound && !seen_dot && !xfailed &&
3036 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3037 || S_ISDIR(PL_statbuf.st_mode)))
3039 seen_dot = 1; /* Disable message. */
3041 if (flags & 1) { /* do or die? */
3042 Perl_croak(aTHX_ "Can't %s %s%s%s",
3043 (xfailed ? "execute" : "find"),
3044 (xfailed ? xfailed : scriptname),
3045 (xfailed ? "" : " on PATH"),
3046 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3048 scriptname = Nullch;
3051 scriptname = xfound;
3053 return (scriptname ? savepv(scriptname) : Nullch);
3056 #ifndef PERL_GET_CONTEXT_DEFINED
3059 Perl_get_context(void)
3062 #if defined(USE_ITHREADS)
3063 # ifdef OLD_PTHREADS_API
3065 if (pthread_getspecific(PL_thr_key, &t))
3066 Perl_croak_nocontext("panic: pthread_getspecific");
3069 # ifdef I_MACH_CTHREADS
3070 return (void*)cthread_data(cthread_self());
3072 return (void*)PTHREAD_GETSPECIFIC(PL_thr_key);
3081 Perl_set_context(void *t)
3084 #if defined(USE_ITHREADS)
3085 # ifdef I_MACH_CTHREADS
3086 cthread_set_data(cthread_self(), t);
3088 if (pthread_setspecific(PL_thr_key, t))
3089 Perl_croak_nocontext("panic: pthread_setspecific");
3096 #endif /* !PERL_GET_CONTEXT_DEFINED */
3098 #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE)
3107 Perl_get_op_names(pTHX)
3109 return (char **)PL_op_name;
3113 Perl_get_op_descs(pTHX)
3115 return (char **)PL_op_desc;
3119 Perl_get_no_modify(pTHX)
3121 return PL_no_modify;
3125 Perl_get_opargs(pTHX)
3127 return (U32 *)PL_opargs;
3131 Perl_get_ppaddr(pTHX)
3134 return (PPADDR_t*)PL_ppaddr;
3137 #ifndef HAS_GETENV_LEN
3139 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3141 char * const env_trans = PerlEnv_getenv(env_elem);
3143 *len = strlen(env_trans);
3150 Perl_get_vtbl(pTHX_ int vtbl_id)
3152 const MGVTBL* result = Null(MGVTBL*);
3156 result = &PL_vtbl_sv;
3159 result = &PL_vtbl_env;
3161 case want_vtbl_envelem:
3162 result = &PL_vtbl_envelem;
3165 result = &PL_vtbl_sig;
3167 case want_vtbl_sigelem:
3168 result = &PL_vtbl_sigelem;
3170 case want_vtbl_pack:
3171 result = &PL_vtbl_pack;
3173 case want_vtbl_packelem:
3174 result = &PL_vtbl_packelem;
3176 case want_vtbl_dbline:
3177 result = &PL_vtbl_dbline;
3180 result = &PL_vtbl_isa;
3182 case want_vtbl_isaelem:
3183 result = &PL_vtbl_isaelem;
3185 case want_vtbl_arylen:
3186 result = &PL_vtbl_arylen;
3188 case want_vtbl_glob:
3189 result = &PL_vtbl_glob;
3191 case want_vtbl_mglob:
3192 result = &PL_vtbl_mglob;
3194 case want_vtbl_nkeys:
3195 result = &PL_vtbl_nkeys;
3197 case want_vtbl_taint:
3198 result = &PL_vtbl_taint;
3200 case want_vtbl_substr:
3201 result = &PL_vtbl_substr;
3204 result = &PL_vtbl_vec;
3207 result = &PL_vtbl_pos;
3210 result = &PL_vtbl_bm;
3213 result = &PL_vtbl_fm;
3215 case want_vtbl_uvar:
3216 result = &PL_vtbl_uvar;
3218 case want_vtbl_defelem:
3219 result = &PL_vtbl_defelem;
3221 case want_vtbl_regexp:
3222 result = &PL_vtbl_regexp;
3224 case want_vtbl_regdata:
3225 result = &PL_vtbl_regdata;
3227 case want_vtbl_regdatum:
3228 result = &PL_vtbl_regdatum;
3230 #ifdef USE_LOCALE_COLLATE
3231 case want_vtbl_collxfrm:
3232 result = &PL_vtbl_collxfrm;
3235 case want_vtbl_amagic:
3236 result = &PL_vtbl_amagic;
3238 case want_vtbl_amagicelem:
3239 result = &PL_vtbl_amagicelem;
3241 case want_vtbl_backref:
3242 result = &PL_vtbl_backref;
3244 case want_vtbl_utf8:
3245 result = &PL_vtbl_utf8;
3248 return (MGVTBL*)result;
3252 Perl_my_fflush_all(pTHX)
3254 #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO)
3255 return PerlIO_flush(NULL);
3257 # if defined(HAS__FWALK)
3258 extern int fflush(FILE *);
3259 /* undocumented, unprototyped, but very useful BSDism */
3260 extern void _fwalk(int (*)(FILE *));
3264 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3266 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3267 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3269 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3270 open_max = sysconf(_SC_OPEN_MAX);
3273 open_max = FOPEN_MAX;
3276 open_max = OPEN_MAX;
3287 for (i = 0; i < open_max; i++)
3288 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3289 STDIO_STREAM_ARRAY[i]._file < open_max &&
3290 STDIO_STREAM_ARRAY[i]._flag)
3291 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3295 SETERRNO(EBADF,RMS_IFI);
3302 Perl_report_evil_fh(pTHX_ const GV *gv, const IO *io, I32 op)
3304 const char * const func =
3305 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3306 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
3308 const char * const pars = OP_IS_FILETEST(op) ? "" : "()";
3309 const char * const type = OP_IS_SOCKET(op)
3310 || (gv && io && IoTYPE(io) == IoTYPE_SOCKET)
3311 ? "socket" : "filehandle";
3312 const char * const name = gv && isGV(gv) ? GvENAME(gv) : NULL;
3314 if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {
3315 if (ckWARN(WARN_IO)) {
3316 const char * const direction = (op == OP_phoney_INPUT_ONLY) ? "in" : "out";
3318 Perl_warner(aTHX_ packWARN(WARN_IO),
3319 "Filehandle %s opened only for %sput",
3322 Perl_warner(aTHX_ packWARN(WARN_IO),
3323 "Filehandle opened only for %sput", direction);
3330 if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) {
3332 warn_type = WARN_CLOSED;
3336 warn_type = WARN_UNOPENED;
3339 if (ckWARN(warn_type)) {
3340 if (name && *name) {
3341 Perl_warner(aTHX_ packWARN(warn_type),
3342 "%s%s on %s %s %s", func, pars, vile, type, name);
3343 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3345 aTHX_ packWARN(warn_type),
3346 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3351 Perl_warner(aTHX_ packWARN(warn_type),
3352 "%s%s on %s %s", func, pars, vile, type);
3353 if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3355 aTHX_ packWARN(warn_type),
3356 "\t(Are you trying to call %s%s on dirhandle?)\n",
3365 /* in ASCII order, not that it matters */
3366 static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
3369 Perl_ebcdic_control(pTHX_ int ch)
3377 if ((ctlp = strchr(controllablechars, ch)) == 0) {
3378 Perl_die(aTHX_ "unrecognised control character '%c'\n", ch);
3381 if (ctlp == controllablechars)
3382 return('\177'); /* DEL */
3384 return((unsigned char)(ctlp - controllablechars - 1));
3385 } else { /* Want uncontrol */
3386 if (ch == '\177' || ch == -1)
3388 else if (ch == '\157')
3390 else if (ch == '\174')
3392 else if (ch == '^') /* '\137' in 1047, '\260' in 819 */
3394 else if (ch == '\155')
3396 else if (0 < ch && ch < (sizeof(controllablechars) - 1))
3397 return(controllablechars[ch+1]);
3399 Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF);
3404 /* To workaround core dumps from the uninitialised tm_zone we get the
3405 * system to give us a reasonable struct to copy. This fix means that
3406 * strftime uses the tm_zone and tm_gmtoff values returned by
3407 * localtime(time()). That should give the desired result most of the
3408 * time. But probably not always!
3410 * This does not address tzname aspects of NETaa14816.
3415 # ifndef STRUCT_TM_HASZONE
3416 # define STRUCT_TM_HASZONE
3420 #ifdef STRUCT_TM_HASZONE /* Backward compat */
3421 # ifndef HAS_TM_TM_ZONE
3422 # define HAS_TM_TM_ZONE
3427 Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */
3429 #ifdef HAS_TM_TM_ZONE
3431 const struct tm* my_tm;
3433 my_tm = localtime(&now);
3435 Copy(my_tm, ptm, 1, struct tm);
3437 PERL_UNUSED_ARG(ptm);
3442 * mini_mktime - normalise struct tm values without the localtime()
3443 * semantics (and overhead) of mktime().
3446 Perl_mini_mktime(pTHX_ struct tm *ptm)
3450 int month, mday, year, jday;
3451 int odd_cent, odd_year;
3453 #define DAYS_PER_YEAR 365
3454 #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1)
3455 #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1)
3456 #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1)
3457 #define SECS_PER_HOUR (60*60)
3458 #define SECS_PER_DAY (24*SECS_PER_HOUR)
3459 /* parentheses deliberately absent on these two, otherwise they don't work */
3460 #define MONTH_TO_DAYS 153/5
3461 #define DAYS_TO_MONTH 5/153
3462 /* offset to bias by March (month 4) 1st between month/mday & year finding */
3463 #define YEAR_ADJUST (4*MONTH_TO_DAYS+1)
3464 /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */
3465 #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */
3468 * Year/day algorithm notes:
3470 * With a suitable offset for numeric value of the month, one can find
3471 * an offset into the year by considering months to have 30.6 (153/5) days,
3472 * using integer arithmetic (i.e., with truncation). To avoid too much
3473 * messing about with leap days, we consider January and February to be
3474 * the 13th and 14th month of the previous year. After that transformation,
3475 * we need the month index we use to be high by 1 from 'normal human' usage,
3476 * so the month index values we use run from 4 through 15.
3478 * Given that, and the rules for the Gregorian calendar (leap years are those
3479 * divisible by 4 unless also divisible by 100, when they must be divisible
3480 * by 400 instead), we can simply calculate the number of days since some
3481 * arbitrary 'beginning of time' by futzing with the (adjusted) year number,
3482 * the days we derive from our month index, and adding in the day of the
3483 * month. The value used here is not adjusted for the actual origin which
3484 * it normally would use (1 January A.D. 1), since we're not exposing it.
3485 * We're only building the value so we can turn around and get the
3486 * normalised values for the year, month, day-of-month, and day-of-year.
3488 * For going backward, we need to bias the value we're using so that we find
3489 * the right year value. (Basically, we don't want the contribution of
3490 * March 1st to the number to apply while deriving the year). Having done
3491 * that, we 'count up' the contribution to the year number by accounting for
3492 * full quadracenturies (400-year periods) with their extra leap days, plus
3493 * the contribution from full centuries (to avoid counting in the lost leap
3494 * days), plus the contribution from full quad-years (to count in the normal
3495 * leap days), plus the leftover contribution from any non-leap years.
3496 * At this point, if we were working with an actual leap day, we'll have 0
3497 * days left over. This is also true for March 1st, however. So, we have
3498 * to special-case that result, and (earlier) keep track of the 'odd'
3499 * century and year contributions. If we got 4 extra centuries in a qcent,
3500 * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb.
3501 * Otherwise, we add back in the earlier bias we removed (the 123 from
3502 * figuring in March 1st), find the month index (integer division by 30.6),
3503 * and the remainder is the day-of-month. We then have to convert back to
3504 * 'real' months (including fixing January and February from being 14/15 in
3505 * the previous year to being in the proper year). After that, to get
3506 * tm_yday, we work with the normalised year and get a new yearday value for
3507 * January 1st, which we subtract from the yearday value we had earlier,
3508 * representing the date we've re-built. This is done from January 1
3509 * because tm_yday is 0-origin.
3511 * Since POSIX time routines are only guaranteed to work for times since the
3512 * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm
3513 * applies Gregorian calendar rules even to dates before the 16th century
3514 * doesn't bother me. Besides, you'd need cultural context for a given
3515 * date to know whether it was Julian or Gregorian calendar, and that's
3516 * outside the scope for this routine. Since we convert back based on the
3517 * same rules we used to build the yearday, you'll only get strange results
3518 * for input which needed normalising, or for the 'odd' century years which
3519 * were leap years in the Julian calander but not in the Gregorian one.
3520 * I can live with that.
3522 * This algorithm also fails to handle years before A.D. 1 gracefully, but
3523 * that's still outside the scope for POSIX time manipulation, so I don't
3527 year = 1900 + ptm->tm_year;
3528 month = ptm->tm_mon;
3529 mday = ptm->tm_mday;
3530 /* allow given yday with no month & mday to dominate the result */
3531 if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) {
3534 jday = 1 + ptm->tm_yday;
3543 yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400;
3544 yearday += month*MONTH_TO_DAYS + mday + jday;
3546 * Note that we don't know when leap-seconds were or will be,
3547 * so we have to trust the user if we get something which looks
3548 * like a sensible leap-second. Wild values for seconds will
3549 * be rationalised, however.
3551 if ((unsigned) ptm->tm_sec <= 60) {
3558 secs += 60 * ptm->tm_min;
3559 secs += SECS_PER_HOUR * ptm->tm_hour;
3561 if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) {
3562 /* got negative remainder, but need positive time */
3563 /* back off an extra day to compensate */
3564 yearday += (secs/SECS_PER_DAY)-1;
3565 secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1);
3568 yearday += (secs/SECS_PER_DAY);
3569 secs -= SECS_PER_DAY * (secs/SECS_PER_DAY);
3572 else if (secs >= SECS_PER_DAY) {
3573 yearday += (secs/SECS_PER_DAY);
3574 secs %= SECS_PER_DAY;
3576 ptm->tm_hour = secs/SECS_PER_HOUR;
3577 secs %= SECS_PER_HOUR;
3578 ptm->tm_min = secs/60;
3580 ptm->tm_sec += secs;
3581 /* done with time of day effects */
3583 * The algorithm for yearday has (so far) left it high by 428.
3584 * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to
3585 * bias it by 123 while trying to figure out what year it
3586 * really represents. Even with this tweak, the reverse
3587 * translation fails for years before A.D. 0001.
3588 * It would still fail for Feb 29, but we catch that one below.
3590 jday = yearday; /* save for later fixup vis-a-vis Jan 1 */
3591 yearday -= YEAR_ADJUST;
3592 year = (yearday / DAYS_PER_QCENT) * 400;
3593 yearday %= DAYS_PER_QCENT;
3594 odd_cent = yearday / DAYS_PER_CENT;
3595 year += odd_cent * 100;
3596 yearday %= DAYS_PER_CENT;
3597 year += (yearday / DAYS_PER_QYEAR) * 4;
3598 yearday %= DAYS_PER_QYEAR;
3599 odd_year = yearday / DAYS_PER_YEAR;
3601 yearday %= DAYS_PER_YEAR;
3602 if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */
3607 yearday += YEAR_ADJUST; /* recover March 1st crock */
3608 month = yearday*DAYS_TO_MONTH;
3609 yearday -= month*MONTH_TO_DAYS;
3610 /* recover other leap-year adjustment */
3619 ptm->tm_year = year - 1900;
3621 ptm->tm_mday = yearday;
3622 ptm->tm_mon = month;
3626 ptm->tm_mon = month - 1;
3628 /* re-build yearday based on Jan 1 to get tm_yday */
3630 yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400;
3631 yearday += 14*MONTH_TO_DAYS + 1;
3632 ptm->tm_yday = jday - yearday;
3633 /* fix tm_wday if not overridden by caller */
3634 if ((unsigned)ptm->tm_wday > 6)
3635 ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7;
3639 Perl_my_strftime(pTHX_ const char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst)
3647 init_tm(&mytm); /* XXX workaround - see init_tm() above */
3650 mytm.tm_hour = hour;
3651 mytm.tm_mday = mday;
3653 mytm.tm_year = year;
3654 mytm.tm_wday = wday;
3655 mytm.tm_yday = yday;
3656 mytm.tm_isdst = isdst;
3658 /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */
3659 #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE))
3664 #ifdef HAS_TM_TM_GMTOFF
3665 mytm.tm_gmtoff = mytm2.tm_gmtoff;
3667 #ifdef HAS_TM_TM_ZONE
3668 mytm.tm_zone = mytm2.tm_zone;
3673 Newx(buf, buflen, char);
3674 len = strftime(buf, buflen, fmt, &mytm);
3676 ** The following is needed to handle to the situation where
3677 ** tmpbuf overflows. Basically we want to allocate a buffer
3678 ** and try repeatedly. The reason why it is so complicated
3679 ** is that getting a return value of 0 from strftime can indicate
3680 ** one of the following:
3681 ** 1. buffer overflowed,
3682 ** 2. illegal conversion specifier, or
3683 ** 3. the format string specifies nothing to be returned(not
3684 ** an error). This could be because format is an empty string
3685 ** or it specifies %p that yields an empty string in some locale.
3686 ** If there is a better way to make it portable, go ahead by
3689 if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0'))
3692 /* Possibly buf overflowed - try again with a bigger buf */
3693 const int fmtlen = strlen(fmt);
3694 const int bufsize = fmtlen + buflen;
3696 Newx(buf, bufsize, char);
3698 buflen = strftime(buf, bufsize, fmt, &mytm);
3699 if (buflen > 0 && buflen < bufsize)
3701 /* heuristic to prevent out-of-memory errors */
3702 if (bufsize > 100*fmtlen) {
3707 Renew(buf, bufsize*2, char);
3712 Perl_croak(aTHX_ "panic: no strftime");
3718 #define SV_CWD_RETURN_UNDEF \
3719 sv_setsv(sv, &PL_sv_undef); \
3722 #define SV_CWD_ISDOT(dp) \
3723 (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
3724 (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
3727 =head1 Miscellaneous Functions
3729 =for apidoc getcwd_sv
3731 Fill the sv with current working directory
3736 /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars.
3737 * rewritten again by dougm, optimized for use with xs TARG, and to prefer
3738 * getcwd(3) if available
3739 * Comments from the orignal:
3740 * This is a faster version of getcwd. It's also more dangerous
3741 * because you might chdir out of a directory that you can't chdir
3745 Perl_getcwd_sv(pTHX_ register SV *sv)
3749 #ifndef INCOMPLETE_TAINTS
3755 char buf[MAXPATHLEN];
3757 /* Some getcwd()s automatically allocate a buffer of the given
3758 * size from the heap if they are given a NULL buffer pointer.
3759 * The problem is that this behaviour is not portable. */
3760 if (getcwd(buf, sizeof(buf) - 1)) {
3761 sv_setpvn(sv, buf, strlen(buf));
3765 sv_setsv(sv, &PL_sv_undef);
3773 int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino;
3777 SvUPGRADE(sv, SVt_PV);
3779 if (PerlLIO_lstat(".", &statbuf) < 0) {
3780 SV_CWD_RETURN_UNDEF;
3783 orig_cdev = statbuf.st_dev;
3784 orig_cino = statbuf.st_ino;
3793 if (PerlDir_chdir("..") < 0) {
3794 SV_CWD_RETURN_UNDEF;
3796 if (PerlLIO_stat(".", &statbuf) < 0) {
3797 SV_CWD_RETURN_UNDEF;
3800 cdev = statbuf.st_dev;
3801 cino = statbuf.st_ino;
3803 if (odev == cdev && oino == cino) {
3806 if (!(dir = PerlDir_open("."))) {
3807 SV_CWD_RETURN_UNDEF;
3810 while ((dp = PerlDir_read(dir)) != NULL) {
3812 const int namelen = dp->d_namlen;
3814 const int namelen = strlen(dp->d_name);
3817 if (SV_CWD_ISDOT(dp)) {
3821 if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) {
3822 SV_CWD_RETURN_UNDEF;
3825 tdev = statbuf.st_dev;
3826 tino = statbuf.st_ino;
3827 if (tino == oino && tdev == odev) {
3833 SV_CWD_RETURN_UNDEF;
3836 if (pathlen + namelen + 1 >= MAXPATHLEN) {
3837 SV_CWD_RETURN_UNDEF;
3840 SvGROW(sv, pathlen + namelen + 1);
3844 Move(SvPVX_const(sv), SvPVX(sv) + namelen + 1, pathlen, char);
3847 /* prepend current directory to the front */
3849 Move(dp->d_name, SvPVX(sv)+1, namelen, char);
3850 pathlen += (namelen + 1);
3852 #ifdef VOID_CLOSEDIR
3855 if (PerlDir_close(dir) < 0) {
3856 SV_CWD_RETURN_UNDEF;
3862 SvCUR_set(sv, pathlen);
3866 if (PerlDir_chdir(SvPVX_const(sv)) < 0) {
3867 SV_CWD_RETURN_UNDEF;
3870 if (PerlLIO_stat(".", &statbuf) < 0) {
3871 SV_CWD_RETURN_UNDEF;
3874 cdev = statbuf.st_dev;
3875 cino = statbuf.st_ino;
3877 if (cdev != orig_cdev || cino != orig_cino) {
3878 Perl_croak(aTHX_ "Unstable directory path, "
3879 "current directory changed unexpectedly");
3891 =for apidoc scan_version
3893 Returns a pointer to the next character after the parsed
3894 version string, as well as upgrading the passed in SV to
3897 Function must be called with an already existing SV like
3900 s = scan_version(s,SV *sv, bool qv);
3902 Performs some preprocessing to the string to ensure that
3903 it has the correct characteristics of a version. Flags the
3904 object if it contains an underscore (which denotes this
3905 is a alpha version). The boolean qv denotes that the version
3906 should be interpreted as if it had multiple decimals, even if
3913 Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv)
3922 SV *hv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */
3923 (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */
3925 #ifndef NODEFAULT_SHAREKEYS
3926 HvSHAREKEYS_on(hv); /* key-sharing on by default */
3929 while (isSPACE(*s)) /* leading whitespace is OK */
3933 s++; /* get past 'v' */
3934 qv = 1; /* force quoted version processing */
3937 start = last = pos = s;
3939 /* pre-scan the input string to check for decimals/underbars */
3940 while ( *pos == '.' || *pos == '_' || isDIGIT(*pos) )
3945 Perl_croak(aTHX_ "Invalid version format (underscores before decimal)");
3949 else if ( *pos == '_' )
3952 Perl_croak(aTHX_ "Invalid version format (multiple underscores)");
3954 width = pos - last - 1; /* natural width of sub-version */
3959 if ( saw_period > 1 )
3960 qv = 1; /* force quoted version processing */
3965 hv_store((HV *)hv, "qv", 2, newSViv(qv), 0);
3967 hv_store((HV *)hv, "alpha", 5, newSViv(alpha), 0);
3968 if ( !qv && width < 3 )
3969 hv_store((HV *)hv, "width", 5, newSViv(width), 0);
3971 while (isDIGIT(*pos))
3973 if (!isALPHA(*pos)) {
3979 /* this is atoi() that delimits on underscores */
3980 const char *end = pos;
3984 /* the following if() will only be true after the decimal
3985 * point of a version originally created with a bare
3986 * floating point number, i.e. not quoted in any way
3988 if ( !qv && s > start && saw_period == 1 ) {
3992 rev += (*s - '0') * mult;
3994 if ( PERL_ABS(orev) > PERL_ABS(rev) )
3995 Perl_croak(aTHX_ "Integer overflow in version");
4002 while (--end >= s) {
4004 rev += (*end - '0') * mult;
4006 if ( PERL_ABS(orev) > PERL_ABS(rev) )
4007 Perl_croak(aTHX_ "Integer overflow in version");
4012 /* Append revision */
4013 av_push(av, newSViv(rev));
4014 if ( *pos == '.' && isDIGIT(pos[1]) )
4016 else if ( *pos == '_' && isDIGIT(pos[1]) )
4018 else if ( isDIGIT(*pos) )
4025 while ( isDIGIT(*pos) )
4030 while ( ( isDIGIT(*pos) || *pos == '_' ) && digits < 3 ) {
4038 if ( qv ) { /* quoted versions always get at least three terms*/
4039 I32 len = av_len(av);
4040 /* This for loop appears to trigger a compiler bug on OS X, as it
4041 loops infinitely. Yes, len is negative. No, it makes no sense.
4042 Compiler in question is:
4043 gcc version 3.3 20030304 (Apple Computer, Inc. build 1640)
4044 for ( len = 2 - len; len > 0; len-- )
4045 av_push((AV *)sv, newSViv(0));
4049 av_push(av, newSViv(0));
4052 if ( av_len(av) == -1 ) /* oops, someone forgot to pass a value */
4053 av_push(av, newSViv(0));
4055 /* And finally, store the AV in the hash */
4056 hv_store((HV *)hv, "version", 7, newRV_noinc((SV *)av), 0);
4061 =for apidoc new_version
4063 Returns a new version object based on the passed in SV:
4065 SV *sv = new_version(SV *ver);
4067 Does not alter the passed in ver SV. See "upg_version" if you
4068 want to upgrade the SV.
4074 Perl_new_version(pTHX_ SV *ver)
4076 SV * const rv = newSV(0);
4077 if ( sv_derived_from(ver,"version") ) /* can just copy directly */
4080 AV * const av = newAV();
4082 /* This will get reblessed later if a derived class*/
4083 SV * const hv = newSVrv(rv, "version");
4084 (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */
4085 #ifndef NODEFAULT_SHAREKEYS
4086 HvSHAREKEYS_on(hv); /* key-sharing on by default */
4092 /* Begin copying all of the elements */
4093 if ( hv_exists((HV *)ver, "qv", 2) )
4094 hv_store((HV *)hv, "qv", 2, &PL_sv_yes, 0);
4096 if ( hv_exists((HV *)ver, "alpha", 5) )
4097 hv_store((HV *)hv, "alpha", 5, &PL_sv_yes, 0);
4099 if ( hv_exists((HV*)ver, "width", 5 ) )
4101 const I32 width = SvIV(*hv_fetch((HV*)ver, "width", 5, FALSE));
4102 hv_store((HV *)hv, "width", 5, newSViv(width), 0);
4105 sav = (AV *)SvRV(*hv_fetch((HV*)ver, "version", 7, FALSE));
4106 /* This will get reblessed later if a derived class*/
4107 for ( key = 0; key <= av_len(sav); key++ )
4109 const I32 rev = SvIV(*av_fetch(sav, key, FALSE));
4110 av_push(av, newSViv(rev));
4113 hv_store((HV *)hv, "version", 7, newRV_noinc((SV *)av), 0);
4117 if ( SvVOK(ver) ) { /* already a v-string */
4118 const MAGIC* const mg = mg_find(ver,PERL_MAGIC_vstring);
4119 const STRLEN len = mg->mg_len;
4120 char * const version = savepvn( (const char*)mg->mg_ptr, len);
4121 sv_setpvn(rv,version,len);
4126 sv_setsv(rv,ver); /* make a duplicate */
4135 =for apidoc upg_version
4137 In-place upgrade of the supplied SV to a version object.
4139 SV *sv = upg_version(SV *sv);
4141 Returns a pointer to the upgraded SV.
4147 Perl_upg_version(pTHX_ SV *ver)
4152 if ( SvNOK(ver) ) /* may get too much accuracy */
4155 sprintf(tbuf,"%.9"NVgf, SvNVX(ver));
4156 version = savepv(tbuf);
4159 else if ( SvVOK(ver) ) { /* already a v-string */
4160 const MAGIC* const mg = mg_find(ver,PERL_MAGIC_vstring);
4161 version = savepvn( (const char*)mg->mg_ptr,mg->mg_len );
4165 else /* must be a string or something like a string */
4167 version = savepv(SvPV_nolen(ver));
4169 (void)scan_version(version, ver, qv);
4177 Validates that the SV contains a valid version object.
4179 bool vverify(SV *vobj);
4181 Note that it only confirms the bare minimum structure (so as not to get
4182 confused by derived classes which may contain additional hash entries):
4186 =item * The SV contains a [reference to a] hash
4188 =item * The hash contains a "version" key
4190 =item * The "version" key has [a reference to] an AV as its value
4198 Perl_vverify(pTHX_ SV *vs)
4204 /* see if the appropriate elements exist */
4205 if ( SvTYPE(vs) == SVt_PVHV
4206 && hv_exists((HV*)vs, "version", 7)
4207 && (sv = SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE)))
4208 && SvTYPE(sv) == SVt_PVAV )
4217 Accepts a version object and returns the normalized floating
4218 point representation. Call like:
4222 NOTE: you can pass either the object directly or the SV
4223 contained within the RV.
4229 Perl_vnumify(pTHX_ SV *vs)
4234 SV * const sv = newSV(0);
4240 Perl_croak(aTHX_ "Invalid version object");
4242 /* see if various flags exist */
4243 if ( hv_exists((HV*)vs, "alpha", 5 ) )
4245 if ( hv_exists((HV*)vs, "width", 5 ) )
4246 width = SvIV(*hv_fetch((HV*)vs, "width", 5, FALSE));
4251 /* attempt to retrieve the version array */
4252 if ( !(av = (AV *)SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE)) ) ) {
4253 sv_catpvn(sv,"0",1);
4260 sv_catpvn(sv,"0",1);
4264 digit = SvIV(*av_fetch(av, 0, 0));
4265 Perl_sv_setpvf(aTHX_ sv, "%d.", (int)PERL_ABS(digit));
4266 for ( i = 1 ; i < len ; i++ )
4268 digit = SvIV(*av_fetch(av, i, 0));
4270 const int denom = (int)pow(10,(3-width));
4271 const div_t term = div((int)PERL_ABS(digit),denom);
4272 Perl_sv_catpvf(aTHX_ sv, "%0*d_%d", width, term.quot, term.rem);
4275 Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit);
4281 digit = SvIV(*av_fetch(av, len, 0));
4282 if ( alpha && width == 3 ) /* alpha version */
4283 sv_catpvn(sv,"_",1);
4284 Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit);
4288 sv_catpvn(sv,"000",3);
4296 Accepts a version object and returns the normalized string
4297 representation. Call like:
4301 NOTE: you can pass either the object directly or the SV
4302 contained within the RV.
4308 Perl_vnormal(pTHX_ SV *vs)
4312 SV * const sv = newSV(0);
4318 Perl_croak(aTHX_ "Invalid version object");
4320 if ( hv_exists((HV*)vs, "alpha", 5 ) )
4322 av = (AV *)SvRV(*hv_fetch((HV*)vs, "version", 7, FALSE));
4330 digit = SvIV(*av_fetch(av, 0, 0));
4331 Perl_sv_setpvf(aTHX_ sv, "v%"IVdf, (IV)digit);
4332 for ( i = 1 ; i < len ; i++ ) {
4333 digit = SvIV(*av_fetch(av, i, 0));
4334 Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit);
4339 /* handle last digit specially */
4340 digit = SvIV(*av_fetch(av, len, 0));
4342 Perl_sv_catpvf(aTHX_ sv, "_%"IVdf, (IV)digit);
4344 Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit);
4347 if ( len <= 2 ) { /* short version, must be at least three */
4348 for ( len = 2 - len; len != 0; len-- )
4349 sv_catpvn(sv,".0",2);
4355 =for apidoc vstringify
4357 In order to maintain maximum compatibility with earlier versions
4358 of Perl, this function will return either the floating point
4359 notation or the multiple dotted notation, depending on whether
4360 the original version contained 1 or more dots, respectively
4366 Perl_vstringify(pTHX_ SV *vs)
4372 Perl_croak(aTHX_ "Invalid version object");
4374 if ( hv_exists((HV *)vs, "qv", 2) )
4383 Version object aware cmp. Both operands must already have been
4384 converted into version objects.
4390 Perl_vcmp(pTHX_ SV *lhv, SV *rhv)
4393 bool lalpha = FALSE;
4394 bool ralpha = FALSE;
4403 if ( !vverify(lhv) )
4404 Perl_croak(aTHX_ "Invalid version object");
4406 if ( !vverify(rhv) )
4407 Perl_croak(aTHX_ "Invalid version object");
4409 /* get the left hand term */
4410 lav = (AV *)SvRV(*hv_fetch((HV*)lhv, "version", 7, FALSE));
4411 if ( hv_exists((HV*)lhv, "alpha", 5 ) )
4414 /* and the right hand term */
4415 rav = (AV *)SvRV(*hv_fetch((HV*)rhv, "version", 7, FALSE));
4416 if ( hv_exists((HV*)rhv, "alpha", 5 ) )
4424 while ( i <= m && retval == 0 )
4426 left = SvIV(*av_fetch(lav,i,0));
4427 right = SvIV(*av_fetch(rav,i,0));
4435 /* tiebreaker for alpha with identical terms */
4436 if ( retval == 0 && l == r && left == right && ( lalpha || ralpha ) )
4438 if ( lalpha && !ralpha )
4442 else if ( ralpha && !lalpha)
4448 if ( l != r && retval == 0 ) /* possible match except for trailing 0's */
4452 while ( i <= r && retval == 0 )
4454 if ( SvIV(*av_fetch(rav,i,0)) != 0 )
4455 retval = -1; /* not a match after all */
4461 while ( i <= l && retval == 0 )
4463 if ( SvIV(*av_fetch(lav,i,0)) != 0 )
4464 retval = +1; /* not a match after all */
4472 #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT)
4473 # define EMULATE_SOCKETPAIR_UDP
4476 #ifdef EMULATE_SOCKETPAIR_UDP
4478 S_socketpair_udp (int fd[2]) {
4480 /* Fake a datagram socketpair using UDP to localhost. */
4481 int sockets[2] = {-1, -1};
4482 struct sockaddr_in addresses[2];
4484 Sock_size_t size = sizeof(struct sockaddr_in);
4485 unsigned short port;
4488 memset(&addresses, 0, sizeof(addresses));
4491 sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET);
4492 if (sockets[i] == -1)
4493 goto tidy_up_and_fail;
4495 addresses[i].sin_family = AF_INET;
4496 addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK);
4497 addresses[i].sin_port = 0; /* kernel choses port. */
4498 if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i],
4499 sizeof(struct sockaddr_in)) == -1)
4500 goto tidy_up_and_fail;
4503 /* Now have 2 UDP sockets. Find out which port each is connected to, and
4504 for each connect the other socket to it. */
4507 if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i],
4509 goto tidy_up_and_fail;
4510 if (size != sizeof(struct sockaddr_in))
4511 goto abort_tidy_up_and_fail;
4512 /* !1 is 0, !0 is 1 */
4513 if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i],
4514 sizeof(struct sockaddr_in)) == -1)
4515 goto tidy_up_and_fail;
4518 /* Now we have 2 sockets connected to each other. I don't trust some other
4519 process not to have already sent a packet to us (by random) so send
4520 a packet from each to the other. */
4523 /* I'm going to send my own port number. As a short.
4524 (Who knows if someone somewhere has sin_port as a bitfield and needs
4525 this routine. (I'm assuming crays have socketpair)) */
4526 port = addresses[i].sin_port;
4527 got = PerlLIO_write(sockets[i], &port, sizeof(port));
4528 if (got != sizeof(port)) {
4530 goto tidy_up_and_fail;
4531 goto abort_tidy_up_and_fail;
4535 /* Packets sent. I don't trust them to have arrived though.
4536 (As I understand it Solaris TCP stack is multithreaded. Non-blocking
4537 connect to localhost will use a second kernel thread. In 2.6 the
4538 first thread running the connect() returns before the second completes,
4539 so EINPROGRESS> In 2.7 the improved stack is faster and connect()
4540 returns 0. Poor programs have tripped up. One poor program's authors'
4541 had a 50-1 reverse stock split. Not sure how connected these were.)
4542 So I don't trust someone not to have an unpredictable UDP stack.
4546 struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */
4547 int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0];
4551 FD_SET(sockets[0], &rset);
4552 FD_SET(sockets[1], &rset);
4554 got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor);
4555 if (got != 2 || !FD_ISSET(sockets[0], &rset)
4556 || !FD_ISSET(sockets[1], &rset)) {
4557 /* I hope this is portable and appropriate. */
4559 goto tidy_up_and_fail;
4560 goto abort_tidy_up_and_fail;
4564 /* And the paranoia department even now doesn't trust it to have arrive
4565 (hence MSG_DONTWAIT). Or that what arrives was sent by us. */
4567 struct sockaddr_in readfrom;
4568 unsigned short buffer[2];
4573 got = PerlSock_recvfrom(sockets[i], (char *) &buffer,
4574 sizeof(buffer), MSG_DONTWAIT,
4575 (struct sockaddr *) &readfrom, &size);
4577 got = PerlSock_recvfrom(sockets[i], (char *) &buffer,
4579 (struct sockaddr *) &readfrom, &size);
4583 goto tidy_up_and_fail;
4584 if (got != sizeof(port)
4585 || size != sizeof(struct sockaddr_in)
4586 /* Check other socket sent us its port. */
4587 || buffer[0] != (unsigned short) addresses[!i].sin_port
4588 /* Check kernel says we got the datagram from that socket */
4589 || readfrom.sin_family != addresses[!i].sin_family
4590 || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr
4591 || readfrom.sin_port != addresses[!i].sin_port)
4592 goto abort_tidy_up_and_fail;
4595 /* My caller (my_socketpair) has validated that this is non-NULL */
4598 /* I hereby declare this connection open. May God bless all who cross
4602 abort_tidy_up_and_fail:
4603 errno = ECONNABORTED;
4606 const int save_errno = errno;
4607 if (sockets[0] != -1)
4608 PerlLIO_close(sockets[0]);
4609 if (sockets[1] != -1)
4610 PerlLIO_close(sockets[1]);
4615 #endif /* EMULATE_SOCKETPAIR_UDP */
4617 #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET)
4619 Perl_my_socketpair (int family, int type, int protocol, int fd[2]) {
4620 /* Stevens says that family must be AF_LOCAL, protocol 0.
4621 I'm going to enforce that, then ignore it, and use TCP (or UDP). */
4626 struct sockaddr_in listen_addr;
4627 struct sockaddr_in connect_addr;
4632 || family != AF_UNIX
4635 errno = EAFNOSUPPORT;
4643 #ifdef EMULATE_SOCKETPAIR_UDP
4644 if (type == SOCK_DGRAM)
4645 return S_socketpair_udp(fd);
4648 listener = PerlSock_socket(AF_INET, type, 0);
4651 memset(&listen_addr, 0, sizeof(listen_addr));
4652 listen_addr.sin_family = AF_INET;
4653 listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
4654 listen_addr.sin_port = 0; /* kernel choses port. */
4655 if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr,
4656 sizeof(listen_addr)) == -1)
4657 goto tidy_up_and_fail;
4658 if (PerlSock_listen(listener, 1) == -1)
4659 goto tidy_up_and_fail;
4661 connector = PerlSock_socket(AF_INET, type, 0);
4662 if (connector == -1)
4663 goto tidy_up_and_fail;
4664 /* We want to find out the port number to connect to. */
4665 size = sizeof(connect_addr);
4666 if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr,
4668 goto tidy_up_and_fail;
4669 if (size != sizeof(connect_addr))
4670 goto abort_tidy_up_and_fail;
4671 if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr,
4672 sizeof(connect_addr)) == -1)
4673 goto tidy_up_and_fail;
4675 size = sizeof(listen_addr);
4676 acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr,
4679 goto tidy_up_and_fail;
4680 if (size != sizeof(listen_addr))
4681 goto abort_tidy_up_and_fail;
4682 PerlLIO_close(listener);
4683 /* Now check we are talking to ourself by matching port and host on the
4685 if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr,
4687 goto tidy_up_and_fail;
4688 if (size != sizeof(connect_addr)
4689 || listen_addr.sin_family != connect_addr.sin_family
4690 || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr
4691 || listen_addr.sin_port != connect_addr.sin_port) {
4692 goto abort_tidy_up_and_fail;
4698 abort_tidy_up_and_fail:
4700 errno = ECONNABORTED; /* This would be the standard thing to do. */
4702 # ifdef ECONNREFUSED
4703 errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */
4705 errno = ETIMEDOUT; /* Desperation time. */
4710 int save_errno = errno;
4712 PerlLIO_close(listener);
4713 if (connector != -1)
4714 PerlLIO_close(connector);
4716 PerlLIO_close(acceptor);
4722 /* In any case have a stub so that there's code corresponding
4723 * to the my_socketpair in global.sym. */
4725 Perl_my_socketpair (int family, int type, int protocol, int fd[2]) {
4726 #ifdef HAS_SOCKETPAIR
4727 return socketpair(family, type, protocol, fd);
4736 =for apidoc sv_nosharing
4738 Dummy routine which "shares" an SV when there is no sharing module present.
4739 Exists to avoid test for a NULL function pointer and because it could potentially warn under
4740 some level of strict-ness.
4746 Perl_sv_nosharing(pTHX_ SV *sv)
4748 PERL_UNUSED_ARG(sv);
4752 =for apidoc sv_nolocking
4754 Dummy routine which "locks" an SV when there is no locking module present.
4755 Exists to avoid test for a NULL function pointer and because it could potentially warn under
4756 some level of strict-ness.
4762 Perl_sv_nolocking(pTHX_ SV *sv)
4764 PERL_UNUSED_ARG(sv);
4769 =for apidoc sv_nounlocking
4771 Dummy routine which "unlocks" an SV when there is no locking module present.
4772 Exists to avoid test for a NULL function pointer and because it could potentially warn under
4773 some level of strict-ness.
4779 Perl_sv_nounlocking(pTHX_ SV *sv)
4781 PERL_UNUSED_ARG(sv);
4785 Perl_parse_unicode_opts(pTHX_ const char **popt)
4787 const char *p = *popt;
4792 opt = (U32) atoi(p);
4793 while (isDIGIT(*p)) p++;
4794 if (*p && *p != '\n' && *p != '\r')
4795 Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p);
4800 case PERL_UNICODE_STDIN:
4801 opt |= PERL_UNICODE_STDIN_FLAG; break;
4802 case PERL_UNICODE_STDOUT:
4803 opt |= PERL_UNICODE_STDOUT_FLAG; break;
4804 case PERL_UNICODE_STDERR:
4805 opt |= PERL_UNICODE_STDERR_FLAG; break;
4806 case PERL_UNICODE_STD:
4807 opt |= PERL_UNICODE_STD_FLAG; break;
4808 case PERL_UNICODE_IN:
4809 opt |= PERL_UNICODE_IN_FLAG; break;
4810 case PERL_UNICODE_OUT:
4811 opt |= PERL_UNICODE_OUT_FLAG; break;
4812 case PERL_UNICODE_INOUT:
4813 opt |= PERL_UNICODE_INOUT_FLAG; break;
4814 case PERL_UNICODE_LOCALE:
4815 opt |= PERL_UNICODE_LOCALE_FLAG; break;
4816 case PERL_UNICODE_ARGV:
4817 opt |= PERL_UNICODE_ARGV_FLAG; break;
4819 if (*p != '\n' && *p != '\r')
4821 "Unknown Unicode option letter '%c'", *p);
4827 opt = PERL_UNICODE_DEFAULT_FLAGS;
4829 if (opt & ~PERL_UNICODE_ALL_FLAGS)
4830 Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf,
4831 (UV) (opt & ~PERL_UNICODE_ALL_FLAGS));
4842 * This is really just a quick hack which grabs various garbage
4843 * values. It really should be a real hash algorithm which
4844 * spreads the effect of every input bit onto every output bit,
4845 * if someone who knows about such things would bother to write it.
4846 * Might be a good idea to add that function to CORE as well.
4847 * No numbers below come from careful analysis or anything here,
4848 * except they are primes and SEED_C1 > 1E6 to get a full-width
4849 * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should
4850 * probably be bigger too.
4853 # define SEED_C1 1000003
4854 #define SEED_C4 73819
4856 # define SEED_C1 25747
4857 #define SEED_C4 20639
4861 #define SEED_C5 26107
4863 #ifndef PERL_NO_DEV_RANDOM
4868 # include <starlet.h>
4869 /* when[] = (low 32 bits, high 32 bits) of time since epoch
4870 * in 100-ns units, typically incremented ever 10 ms. */
4871 unsigned int when[2];
4873 # ifdef HAS_GETTIMEOFDAY
4874 struct timeval when;
4880 /* This test is an escape hatch, this symbol isn't set by Configure. */
4881 #ifndef PERL_NO_DEV_RANDOM
4882 #ifndef PERL_RANDOM_DEVICE
4883 /* /dev/random isn't used by default because reads from it will block
4884 * if there isn't enough entropy available. You can compile with
4885 * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there
4886 * is enough real entropy to fill the seed. */
4887 # define PERL_RANDOM_DEVICE "/dev/urandom"
4889 fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0);
4891 if (PerlLIO_read(fd, (void*)&u, sizeof u) != sizeof u)
4900 _ckvmssts(sys$gettim(when));
4901 u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1];
4903 # ifdef HAS_GETTIMEOFDAY
4904 PerlProc_gettimeofday(&when,NULL);
4905 u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec;
4908 u = (U32)SEED_C1 * when;
4911 u += SEED_C3 * (U32)PerlProc_getpid();
4912 u += SEED_C4 * (U32)PTR2UV(PL_stack_sp);
4913 #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */
4914 u += SEED_C5 * (U32)PTR2UV(&when);
4920 Perl_get_hash_seed(pTHX)
4922 const char *s = PerlEnv_getenv("PERL_HASH_SEED");
4926 while (isSPACE(*s)) s++;
4927 if (s && isDIGIT(*s))
4928 myseed = (UV)Atoul(s);
4930 #ifdef USE_HASH_SEED_EXPLICIT
4934 /* Compute a random seed */
4935 (void)seedDrand01((Rand_seed_t)seed());
4936 myseed = (UV)(Drand01() * (NV)UV_MAX);
4937 #if RANDBITS < (UVSIZE * 8)
4938 /* Since there are not enough randbits to to reach all
4939 * the bits of a UV, the low bits might need extra
4940 * help. Sum in another random number that will
4941 * fill in the low bits. */
4943 (UV)(Drand01() * (NV)((1 << ((UVSIZE * 8 - RANDBITS))) - 1));
4944 #endif /* RANDBITS < (UVSIZE * 8) */
4945 if (myseed == 0) { /* Superparanoia. */
4946 myseed = (UV)(Drand01() * (NV)UV_MAX); /* One more chance. */
4948 Perl_croak(aTHX_ "Your random numbers are not that random");
4951 PL_rehash_seed_set = TRUE;
4958 Perl_stashpv_hvname_match(pTHX_ const COP *c, const HV *hv)
4960 const char * const stashpv = CopSTASHPV(c);
4961 const char * const name = HvNAME_get(hv);
4963 if (stashpv == name)
4965 if (stashpv && name)
4966 if (strEQ(stashpv, name))
4973 #ifdef PERL_GLOBAL_STRUCT
4976 Perl_init_global_struct(pTHX)
4978 struct perl_vars *plvarsp = NULL;
4979 #ifdef PERL_GLOBAL_STRUCT
4980 # define PERL_GLOBAL_STRUCT_INIT
4981 # include "opcode.h" /* the ppaddr and check */
4982 IV nppaddr = sizeof(Gppaddr)/sizeof(Perl_ppaddr_t);
4983 IV ncheck = sizeof(Gcheck) /sizeof(Perl_check_t);
4984 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
4985 /* PerlMem_malloc() because can't use even safesysmalloc() this early. */
4986 plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars));
4990 plvarsp = PL_VarsPtr;
4991 # endif /* PERL_GLOBAL_STRUCT_PRIVATE */
4997 # define PERLVAR(var,type) /**/
4998 # define PERLVARA(var,n,type) /**/
4999 # define PERLVARI(var,type,init) plvarsp->var = init;
5000 # define PERLVARIC(var,type,init) plvarsp->var = init;
5001 # define PERLVARISC(var,init) Copy(init, plvarsp->var, sizeof(init), char);
5002 # include "perlvars.h"
5008 # ifdef PERL_GLOBAL_STRUCT
5009 plvarsp->Gppaddr = PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t));
5010 if (!plvarsp->Gppaddr)
5012 plvarsp->Gcheck = PerlMem_malloc(ncheck * sizeof(Perl_check_t));
5013 if (!plvarsp->Gcheck)
5015 Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t);
5016 Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t);
5018 # ifdef PERL_SET_VARS
5019 PERL_SET_VARS(plvarsp);
5021 # undef PERL_GLOBAL_STRUCT_INIT
5026 #endif /* PERL_GLOBAL_STRUCT */
5028 #ifdef PERL_GLOBAL_STRUCT
5031 Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp)
5033 #ifdef PERL_GLOBAL_STRUCT
5034 # ifdef PERL_UNSET_VARS
5035 PERL_UNSET_VARS(plvarsp);
5037 free(plvarsp->Gppaddr);
5038 free(plvarsp->Gcheck);
5039 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
5045 #endif /* PERL_GLOBAL_STRUCT */
5049 #define PERL_MEM_LOG_SPRINTF_BUF_SIZE 128
5052 Perl_mem_log_alloc(const UV n, const UV typesize, const char *typename, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname)
5054 #ifdef PERL_MEM_LOG_STDERR
5055 /* We can't use PerlIO for obvious reasons. */
5056 char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
5058 "alloc: %s:%d:%s: %"IVdf" %"UVuf" %s = %"IVdf": %"UVxf"\n",
5059 filename, linenumber, funcname,
5060 n, typesize, typename, n * typesize, PTR2UV(newalloc));
5061 PerlLIO_write(2, buf, strlen(buf));
5067 Perl_mem_log_realloc(const UV n, const UV typesize, const char *typename, Malloc_t oldalloc, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname)
5069 #ifdef PERL_MEM_LOG_STDERR
5070 /* We can't use PerlIO for obvious reasons. */
5071 char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
5073 "realloc: %s:%d:%s: %"IVdf" %"UVuf" %s = %"IVdf": %"UVxf" -> %"UVxf"\n",
5074 filename, linenumber, funcname,
5075 n, typesize, typename, n * typesize, PTR2UV(oldalloc), PTR2UV(newalloc));
5076 PerlLIO_write(2, buf, strlen(buf));
5082 Perl_mem_log_free(Malloc_t oldalloc, const char *filename, const int linenumber, const char *funcname)
5084 #ifdef PERL_MEM_LOG_STDERR
5085 /* We can't use PerlIO for obvious reasons. */
5086 char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE];
5087 sprintf(buf, "free: %s:%d:%s: %"UVxf"\n",
5088 filename, linenumber, funcname, PTR2UV(oldalloc));
5089 PerlLIO_write(2, buf, strlen(buf));
5094 #endif /* PERL_MEM_LOG */
5097 =for apidoc my_sprintf
5099 The C library C<sprintf>, wrapped if necessary, to ensure that it will return
5100 the length of the string written to the buffer. Only rare pre-ANSI systems
5101 need the wrapper function - usually this is a direct call to C<sprintf>.
5105 #ifndef SPRINTF_RETURNS_STRLEN
5107 Perl_my_sprintf(char *buffer, const char* pat, ...)
5110 va_start(args, pat);
5111 vsprintf(buffer, pat, args);
5113 return strlen(buffer);
5119 * c-indentation-style: bsd
5121 * indent-tabs-mode: t
5124 * ex: set ts=8 sts=4 sw=4 noet: