3 * Copyright (c) 1991-2001, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
16 #define PERL_IN_UTIL_C
20 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
25 # define SIG_ERR ((Sighandler_t) -1)
33 /* Put this after #includes because fork and vfork prototypes may
41 # include <sys/wait.h>
48 long xcount[MAXXCOUNT];
49 long lastxcount[MAXXCOUNT];
50 long xycount[MAXXCOUNT][MAXYCOUNT];
51 long lastxycount[MAXXCOUNT][MAXYCOUNT];
55 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
56 # define FD_CLOEXEC 1 /* NeXT needs this */
59 /* NOTE: Do not call the next three routines directly. Use the macros
60 * in handy.h, so that we can easily redefine everything to do tracking of
61 * allocated hunks back to the original New to track down any memory leaks.
62 * XXX This advice seems to be widely ignored :-( --AD August 1996.
65 /* paranoid version of system's malloc() */
68 Perl_safesysmalloc(MEM_SIZE size)
74 PerlIO_printf(Perl_error_log,
75 "Allocation too large: %lx\n", size) FLUSH;
78 #endif /* HAS_64K_LIMIT */
81 Perl_croak_nocontext("panic: malloc");
83 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
84 PERL_ALLOC_CHECK(ptr);
85 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
91 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
98 /* paranoid version of system's realloc() */
101 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
105 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
106 Malloc_t PerlMem_realloc();
107 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
111 PerlIO_printf(Perl_error_log,
112 "Reallocation too large: %lx\n", size) FLUSH;
115 #endif /* HAS_64K_LIMIT */
122 return safesysmalloc(size);
125 Perl_croak_nocontext("panic: realloc");
127 ptr = (Malloc_t)PerlMem_realloc(where,size);
128 PERL_ALLOC_CHECK(ptr);
130 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
131 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
138 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
145 /* safe version of system's free() */
148 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++));
160 /* safe version of system's calloc() */
163 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
169 if (size * count > 0xffff) {
170 PerlIO_printf(Perl_error_log,
171 "Allocation too large: %lx\n", size * count) FLUSH;
174 #endif /* HAS_64K_LIMIT */
176 if ((long)size < 0 || (long)count < 0)
177 Perl_croak_nocontext("panic: calloc");
180 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
181 PERL_ALLOC_CHECK(ptr);
182 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));
184 memset((void*)ptr, 0, size);
190 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
199 struct mem_test_strut {
207 # define ALIGN sizeof(struct mem_test_strut)
209 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
210 # define typeof_chunk(ch) \
211 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
212 # define set_typeof_chunk(ch,t) \
213 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
214 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
217 ? ((size) - 1)/8 + 5 \
221 Perl_safexmalloc(I32 x, MEM_SIZE size)
223 register char* where = (char*)safemalloc(size + ALIGN);
226 xycount[x][SIZE_TO_Y(size)]++;
227 set_typeof_chunk(where, x);
228 sizeof_chunk(where) = size;
229 return (Malloc_t)(where + ALIGN);
233 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
235 char *where = (char*)wh;
238 return safexmalloc(0,size);
241 MEM_SIZE old = sizeof_chunk(where - ALIGN);
242 int t = typeof_chunk(where - ALIGN);
243 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
245 xycount[t][SIZE_TO_Y(old)]--;
246 xycount[t][SIZE_TO_Y(size)]++;
247 xcount[t] += size - old;
248 sizeof_chunk(new) = size;
249 return (Malloc_t)(new + ALIGN);
254 Perl_safexfree(Malloc_t wh)
257 char *where = (char*)wh;
263 size = sizeof_chunk(where);
264 x = where[0] + 100 * where[1];
266 xycount[x][SIZE_TO_Y(size)]--;
271 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
273 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
275 xycount[x][SIZE_TO_Y(size)]++;
276 memset((void*)(where + ALIGN), 0, size * count);
277 set_typeof_chunk(where, x);
278 sizeof_chunk(where) = size;
279 return (Malloc_t)(where + ALIGN);
283 S_xstat(pTHX_ int flag)
285 register I32 i, j, total = 0;
286 I32 subtot[MAXYCOUNT];
288 for (j = 0; j < MAXYCOUNT; j++) {
292 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
293 for (i = 0; i < MAXXCOUNT; i++) {
295 for (j = 0; j < MAXYCOUNT; j++) {
296 subtot[j] += xycount[i][j];
299 ? xcount[i] /* Have something */
301 ? xcount[i] != lastxcount[i] /* Changed */
302 : xcount[i] > lastxcount[i])) { /* Growed */
303 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
304 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
305 lastxcount[i] = xcount[i];
306 for (j = 0; j < MAXYCOUNT; j++) {
308 ? xycount[i][j] /* Have something */
310 ? xycount[i][j] != lastxycount[i][j] /* Changed */
311 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
312 PerlIO_printf(Perl_debug_log,"%3ld ",
314 ? xycount[i][j] - lastxycount[i][j]
316 lastxycount[i][j] = xycount[i][j];
318 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
321 PerlIO_printf(Perl_debug_log, "\n");
325 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
326 for (j = 0; j < MAXYCOUNT; j++) {
328 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
330 PerlIO_printf(Perl_debug_log, " . ");
333 PerlIO_printf(Perl_debug_log, "\n");
337 #endif /* LEAKTEST */
339 /* These must be defined when not using Perl's malloc for binary
344 Malloc_t Perl_malloc (MEM_SIZE nbytes)
347 return PerlMem_malloc(nbytes);
350 Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size)
353 return PerlMem_calloc(elements, size);
356 Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes)
359 return PerlMem_realloc(where, nbytes);
362 Free_t Perl_mfree (Malloc_t where)
370 /* copy a string up to some (non-backslashed) delimiter, if any */
373 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
376 for (tolen = 0; from < fromend; from++, tolen++) {
378 if (from[1] == delim)
387 else if (*from == delim)
398 /* return ptr to little string in big string, NULL if not found */
399 /* This routine was donated by Corey Satten. */
402 Perl_instr(pTHX_ register const char *big, register const char *little)
404 register const char *s, *x;
415 for (x=big,s=little; *s; /**/ ) {
424 return (char*)(big-1);
429 /* same as instr but allow embedded nulls */
432 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
434 register const char *s, *x;
435 register I32 first = *little;
436 register const char *littleend = lend;
438 if (!first && little >= littleend)
440 if (bigend - big < littleend - little)
442 bigend -= littleend - little++;
443 while (big <= bigend) {
446 for (x=big,s=little; s < littleend; /**/ ) {
453 return (char*)(big-1);
458 /* reverse of the above--find last substring */
461 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
463 register const char *bigbeg;
464 register const char *s, *x;
465 register I32 first = *little;
466 register const char *littleend = lend;
468 if (!first && little >= littleend)
469 return (char*)bigend;
471 big = bigend - (littleend - little++);
472 while (big >= bigbeg) {
475 for (x=big+2,s=little; s < littleend; /**/ ) {
482 return (char*)(big+1);
487 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
489 /* As a space optimization, we do not compile tables for strings of length
490 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
491 special-cased in fbm_instr().
493 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
496 =for apidoc fbm_compile
498 Analyses the string in order to make fast searches on it using fbm_instr()
499 -- the Boyer-Moore algorithm.
505 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
514 if (flags & FBMcf_TAIL)
515 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
516 s = (U8*)SvPV_force(sv, len);
517 (void)SvUPGRADE(sv, SVt_PVBM);
518 if (len == 0) /* TAIL might be on on a zero-length string. */
528 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
529 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
530 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
531 memset((void*)table, mlen, 256);
532 table[-1] = (U8)flags;
534 sb = s - mlen + 1; /* first char (maybe) */
536 if (table[*s] == mlen)
541 sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */
544 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
545 for (i = 0; i < len; i++) {
546 if (PL_freq[s[i]] < frequency) {
548 frequency = PL_freq[s[i]];
551 BmRARE(sv) = s[rarest];
552 BmPREVIOUS(sv) = rarest;
553 BmUSEFUL(sv) = 100; /* Initial value */
554 if (flags & FBMcf_TAIL)
556 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
557 BmRARE(sv),BmPREVIOUS(sv)));
560 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
561 /* If SvTAIL is actually due to \Z or \z, this gives false positives
565 =for apidoc fbm_instr
567 Returns the location of the SV in the string delimited by C<str> and
568 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
569 does not have to be fbm_compiled, but the search will not be as fast
576 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
578 register unsigned char *s;
580 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
581 register STRLEN littlelen = l;
582 register I32 multiline = flags & FBMrf_MULTILINE;
584 if (bigend - big < littlelen) {
585 if ( SvTAIL(littlestr)
586 && (bigend - big == littlelen - 1)
588 || (*big == *little &&
589 memEQ((char *)big, (char *)little, littlelen - 1))))
594 if (littlelen <= 2) { /* Special-cased */
596 if (littlelen == 1) {
597 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
598 /* Know that bigend != big. */
599 if (bigend[-1] == '\n')
600 return (char *)(bigend - 1);
601 return (char *) bigend;
609 if (SvTAIL(littlestr))
610 return (char *) bigend;
614 return (char*)big; /* Cannot be SvTAIL! */
617 if (SvTAIL(littlestr) && !multiline) {
618 if (bigend[-1] == '\n' && bigend[-2] == *little)
619 return (char*)bigend - 2;
620 if (bigend[-1] == *little)
621 return (char*)bigend - 1;
625 /* This should be better than FBM if c1 == c2, and almost
626 as good otherwise: maybe better since we do less indirection.
627 And we save a lot of memory by caching no table. */
628 register unsigned char c1 = little[0];
629 register unsigned char c2 = little[1];
634 while (s <= bigend) {
644 goto check_1char_anchor;
655 goto check_1char_anchor;
658 while (s <= bigend) {
663 goto check_1char_anchor;
672 check_1char_anchor: /* One char and anchor! */
673 if (SvTAIL(littlestr) && (*bigend == *little))
674 return (char *)bigend; /* bigend is already decremented. */
677 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
678 s = bigend - littlelen;
679 if (s >= big && bigend[-1] == '\n' && *s == *little
680 /* Automatically of length > 2 */
681 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
683 return (char*)s; /* how sweet it is */
686 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
688 return (char*)s + 1; /* how sweet it is */
692 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
693 char *b = ninstr((char*)big,(char*)bigend,
694 (char*)little, (char*)little + littlelen);
696 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
697 /* Chop \n from littlestr: */
698 s = bigend - littlelen + 1;
700 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
709 { /* Do actual FBM. */
710 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
711 register unsigned char *oldlittle;
713 if (littlelen > bigend - big)
715 --littlelen; /* Last char found by table lookup */
718 little += littlelen; /* last char */
725 if ((tmp = table[*s])) {
726 if ((s += tmp) < bigend)
730 else { /* less expensive than calling strncmp() */
731 register unsigned char *olds = s;
736 if (*--s == *--little)
738 s = olds + 1; /* here we pay the price for failure */
740 if (s < bigend) /* fake up continue to outer loop */
748 if ( s == bigend && (table[-1] & FBMcf_TAIL)
749 && memEQ((char *)(bigend - littlelen),
750 (char *)(oldlittle - littlelen), littlelen) )
751 return (char*)bigend - littlelen;
756 /* start_shift, end_shift are positive quantities which give offsets
757 of ends of some substring of bigstr.
758 If `last' we want the last occurence.
759 old_posp is the way of communication between consequent calls if
760 the next call needs to find the .
761 The initial *old_posp should be -1.
763 Note that we take into account SvTAIL, so one can get extra
764 optimizations if _ALL flag is set.
767 /* If SvTAIL is actually due to \Z or \z, this gives false positives
768 if PL_multiline. In fact if !PL_multiline the authoritative answer
769 is not supported yet. */
772 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
774 register unsigned char *s, *x;
775 register unsigned char *big;
777 register I32 previous;
779 register unsigned char *little;
780 register I32 stop_pos;
781 register unsigned char *littleend;
785 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
786 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
788 if ( BmRARE(littlestr) == '\n'
789 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
790 little = (unsigned char *)(SvPVX(littlestr));
791 littleend = little + SvCUR(littlestr);
798 little = (unsigned char *)(SvPVX(littlestr));
799 littleend = little + SvCUR(littlestr);
801 /* The value of pos we can start at: */
802 previous = BmPREVIOUS(littlestr);
803 big = (unsigned char *)(SvPVX(bigstr));
804 /* The value of pos we can stop at: */
805 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
806 if (previous + start_shift > stop_pos) {
808 stop_pos does not include SvTAIL in the count, so this check is incorrect
809 (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19
812 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
817 while (pos < previous + start_shift) {
818 if (!(pos += PL_screamnext[pos]))
823 if (pos >= stop_pos) break;
824 if (big[pos] != first)
826 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
832 if (s == littleend) {
834 if (!last) return (char *)(big+pos);
837 } while ( pos += PL_screamnext[pos] );
839 return (char *)(big+(*old_posp));
841 if (!SvTAIL(littlestr) || (end_shift > 0))
843 /* Ignore the trailing "\n". This code is not microoptimized */
844 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
845 stop_pos = littleend - little; /* Actual littlestr len */
850 && ((stop_pos == 1) ||
851 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
857 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
859 register U8 *a = (U8 *)s1;
860 register U8 *b = (U8 *)s2;
862 if (*a != *b && *a != PL_fold[*b])
870 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
872 register U8 *a = (U8 *)s1;
873 register U8 *b = (U8 *)s2;
875 if (*a != *b && *a != PL_fold_locale[*b])
882 /* copy a string to a safe spot */
887 Copy a string to a safe spot. This does not use an SV.
893 Perl_savepv(pTHX_ const char *sv)
895 register char *newaddr;
897 New(902,newaddr,strlen(sv)+1,char);
898 (void)strcpy(newaddr,sv);
902 /* same thing but with a known length */
907 Copy a string to a safe spot. The C<len> indicates number of bytes to
908 copy. This does not use an SV.
914 Perl_savepvn(pTHX_ const char *sv, register I32 len)
916 register char *newaddr;
918 New(903,newaddr,len+1,char);
919 Copy(sv,newaddr,len,char); /* might not be null terminated */
920 newaddr[len] = '\0'; /* is now */
924 /* the SV for Perl_form() and mess() is not kept in an arena */
933 return sv_2mortal(newSVpvn("",0));
938 /* Create as PVMG now, to avoid any upgrading later */
940 Newz(905, any, 1, XPVMG);
941 SvFLAGS(sv) = SVt_PVMG;
942 SvANY(sv) = (void*)any;
943 SvREFCNT(sv) = 1 << 30; /* practically infinite */
948 #if defined(PERL_IMPLICIT_CONTEXT)
950 Perl_form_nocontext(const char* pat, ...)
956 retval = vform(pat, &args);
960 #endif /* PERL_IMPLICIT_CONTEXT */
963 Perl_form(pTHX_ const char* pat, ...)
968 retval = vform(pat, &args);
974 Perl_vform(pTHX_ const char *pat, va_list *args)
976 SV *sv = mess_alloc();
977 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
981 #if defined(PERL_IMPLICIT_CONTEXT)
983 Perl_mess_nocontext(const char *pat, ...)
989 retval = vmess(pat, &args);
993 #endif /* PERL_IMPLICIT_CONTEXT */
996 Perl_mess(pTHX_ const char *pat, ...)
1000 va_start(args, pat);
1001 retval = vmess(pat, &args);
1007 Perl_vmess(pTHX_ const char *pat, va_list *args)
1009 SV *sv = mess_alloc();
1010 static char dgd[] = " during global destruction.\n";
1012 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1013 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1014 if (CopLINE(PL_curcop))
1015 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1016 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1017 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1018 bool line_mode = (RsSIMPLE(PL_rs) &&
1019 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1020 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1021 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1022 line_mode ? "line" : "chunk",
1023 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1027 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1029 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1035 Perl_vdie(pTHX_ const char* pat, va_list *args)
1038 int was_in_eval = PL_in_eval;
1045 DEBUG_S(PerlIO_printf(Perl_debug_log,
1046 "%p: die: curstack = %p, mainstack = %p\n",
1047 thr, PL_curstack, PL_mainstack));
1050 msv = vmess(pat, args);
1051 if (PL_errors && SvCUR(PL_errors)) {
1052 sv_catsv(PL_errors, msv);
1053 message = SvPV(PL_errors, msglen);
1054 SvCUR_set(PL_errors, 0);
1057 message = SvPV(msv,msglen);
1064 DEBUG_S(PerlIO_printf(Perl_debug_log,
1065 "%p: die: message = %s\ndiehook = %p\n",
1066 thr, message, PL_diehook));
1068 /* sv_2cv might call Perl_croak() */
1069 SV *olddiehook = PL_diehook;
1071 SAVESPTR(PL_diehook);
1072 PL_diehook = Nullsv;
1073 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1075 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1082 msg = newSVpvn(message, msglen);
1090 PUSHSTACKi(PERLSI_DIEHOOK);
1094 call_sv((SV*)cv, G_DISCARD);
1100 PL_restartop = die_where(message, msglen);
1101 DEBUG_S(PerlIO_printf(Perl_debug_log,
1102 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1103 thr, PL_restartop, was_in_eval, PL_top_env));
1104 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1106 return PL_restartop;
1109 #if defined(PERL_IMPLICIT_CONTEXT)
1111 Perl_die_nocontext(const char* pat, ...)
1116 va_start(args, pat);
1117 o = vdie(pat, &args);
1121 #endif /* PERL_IMPLICIT_CONTEXT */
1124 Perl_die(pTHX_ const char* pat, ...)
1128 va_start(args, pat);
1129 o = vdie(pat, &args);
1135 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1145 msv = vmess(pat, args);
1146 if (PL_errors && SvCUR(PL_errors)) {
1147 sv_catsv(PL_errors, msv);
1148 message = SvPV(PL_errors, msglen);
1149 SvCUR_set(PL_errors, 0);
1152 message = SvPV(msv,msglen);
1159 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1160 PTR2UV(thr), message));
1163 /* sv_2cv might call Perl_croak() */
1164 SV *olddiehook = PL_diehook;
1166 SAVESPTR(PL_diehook);
1167 PL_diehook = Nullsv;
1168 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1170 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1177 msg = newSVpvn(message, msglen);
1185 PUSHSTACKi(PERLSI_DIEHOOK);
1189 call_sv((SV*)cv, G_DISCARD);
1195 PL_restartop = die_where(message, msglen);
1200 /* SFIO can really mess with your errno */
1203 PerlIO *serr = Perl_error_log;
1205 PerlIO_write(serr, message, msglen);
1206 (void)PerlIO_flush(serr);
1214 #if defined(PERL_IMPLICIT_CONTEXT)
1216 Perl_croak_nocontext(const char *pat, ...)
1220 va_start(args, pat);
1225 #endif /* PERL_IMPLICIT_CONTEXT */
1230 This is the XSUB-writer's interface to Perl's C<die> function.
1231 Normally use this function the same way you use the C C<printf>
1232 function. See C<warn>.
1234 If you want to throw an exception object, assign the object to
1235 C<$@> and then pass C<Nullch> to croak():
1237 errsv = get_sv("@", TRUE);
1238 sv_setsv(errsv, exception_object);
1245 Perl_croak(pTHX_ const char *pat, ...)
1248 va_start(args, pat);
1255 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1264 msv = vmess(pat, args);
1265 message = SvPV(msv, msglen);
1268 /* sv_2cv might call Perl_warn() */
1269 SV *oldwarnhook = PL_warnhook;
1271 SAVESPTR(PL_warnhook);
1272 PL_warnhook = Nullsv;
1273 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1275 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1281 msg = newSVpvn(message, msglen);
1285 PUSHSTACKi(PERLSI_WARNHOOK);
1289 call_sv((SV*)cv, G_DISCARD);
1296 PerlIO *serr = Perl_error_log;
1298 PerlIO_write(serr, message, msglen);
1300 DEBUG_L(*message == '!'
1301 ? (xstat(message[1]=='!'
1302 ? (message[2]=='!' ? 2 : 1)
1307 (void)PerlIO_flush(serr);
1311 #if defined(PERL_IMPLICIT_CONTEXT)
1313 Perl_warn_nocontext(const char *pat, ...)
1317 va_start(args, pat);
1321 #endif /* PERL_IMPLICIT_CONTEXT */
1326 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1327 function the same way you use the C C<printf> function. See
1334 Perl_warn(pTHX_ const char *pat, ...)
1337 va_start(args, pat);
1342 #if defined(PERL_IMPLICIT_CONTEXT)
1344 Perl_warner_nocontext(U32 err, const char *pat, ...)
1348 va_start(args, pat);
1349 vwarner(err, pat, &args);
1352 #endif /* PERL_IMPLICIT_CONTEXT */
1355 Perl_warner(pTHX_ U32 err, const char* pat,...)
1358 va_start(args, pat);
1359 vwarner(err, pat, &args);
1364 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1373 msv = vmess(pat, args);
1374 message = SvPV(msv, msglen);
1378 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1379 #endif /* USE_THREADS */
1381 /* sv_2cv might call Perl_croak() */
1382 SV *olddiehook = PL_diehook;
1384 SAVESPTR(PL_diehook);
1385 PL_diehook = Nullsv;
1386 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1388 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1394 msg = newSVpvn(message, msglen);
1398 PUSHSTACKi(PERLSI_DIEHOOK);
1402 call_sv((SV*)cv, G_DISCARD);
1408 PL_restartop = die_where(message, msglen);
1412 PerlIO *serr = Perl_error_log;
1413 PerlIO_write(serr, message, msglen);
1414 (void)PerlIO_flush(serr);
1421 /* sv_2cv might call Perl_warn() */
1422 SV *oldwarnhook = PL_warnhook;
1424 SAVESPTR(PL_warnhook);
1425 PL_warnhook = Nullsv;
1426 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1428 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1434 msg = newSVpvn(message, msglen);
1438 PUSHSTACKi(PERLSI_WARNHOOK);
1442 call_sv((SV*)cv, G_DISCARD);
1449 PerlIO *serr = Perl_error_log;
1450 PerlIO_write(serr, message, msglen);
1452 DEBUG_L(*message == '!'
1453 ? (xstat(message[1]=='!'
1454 ? (message[2]=='!' ? 2 : 1)
1459 (void)PerlIO_flush(serr);
1464 #ifdef USE_ENVIRON_ARRAY
1465 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
1466 #if !defined(WIN32) && !defined(NETWARE)
1468 Perl_my_setenv(pTHX_ char *nam, char *val)
1470 #ifndef PERL_USE_SAFE_PUTENV
1471 /* most putenv()s leak, so we manipulate environ directly */
1472 register I32 i=setenv_getix(nam); /* where does it go? */
1474 if (environ == PL_origenviron) { /* need we copy environment? */
1480 for (max = i; environ[max]; max++) ;
1481 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1482 for (j=0; j<max; j++) { /* copy environment */
1483 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1484 strcpy(tmpenv[j], environ[j]);
1486 tmpenv[max] = Nullch;
1487 environ = tmpenv; /* tell exec where it is now */
1490 safesysfree(environ[i]);
1491 while (environ[i]) {
1492 environ[i] = environ[i+1];
1497 if (!environ[i]) { /* does not exist yet */
1498 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1499 environ[i+1] = Nullch; /* make sure it's null terminated */
1502 safesysfree(environ[i]);
1503 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1505 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1507 #else /* PERL_USE_SAFE_PUTENV */
1508 # if defined(__CYGWIN__)
1509 setenv(nam, val, 1);
1513 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1514 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1515 (void)putenv(new_env);
1516 # endif /* __CYGWIN__ */
1517 #endif /* PERL_USE_SAFE_PUTENV */
1520 #else /* WIN32 || NETWARE */
1523 Perl_my_setenv(pTHX_ char *nam,char *val)
1525 register char *envstr;
1526 STRLEN len = strlen(nam) + 3;
1531 New(904, envstr, len, char);
1532 (void)sprintf(envstr,"%s=%s",nam,val);
1533 (void)PerlEnv_putenv(envstr);
1537 #endif /* WIN32 || NETWARE */
1540 Perl_setenv_getix(pTHX_ char *nam)
1542 register I32 i, len = strlen(nam);
1544 for (i = 0; environ[i]; i++) {
1547 strnicmp(environ[i],nam,len) == 0
1549 strnEQ(environ[i],nam,len)
1551 && environ[i][len] == '=')
1552 break; /* strnEQ must come first to avoid */
1553 } /* potential SEGV's */
1557 #endif /* !VMS && !EPOC*/
1559 #ifdef UNLINK_ALL_VERSIONS
1561 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
1565 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
1570 /* this is a drop-in replacement for bcopy() */
1571 #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY))
1573 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
1577 if (from - to >= 0) {
1585 *(--to) = *(--from);
1591 /* this is a drop-in replacement for memset() */
1594 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
1604 /* this is a drop-in replacement for bzero() */
1605 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
1607 Perl_my_bzero(register char *loc, register I32 len)
1617 /* this is a drop-in replacement for memcmp() */
1618 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
1620 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
1622 register U8 *a = (U8 *)s1;
1623 register U8 *b = (U8 *)s2;
1627 if (tmp = *a++ - *b++)
1632 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
1636 #ifdef USE_CHAR_VSPRINTF
1641 vsprintf(char *dest, const char *pat, char *args)
1645 fakebuf._ptr = dest;
1646 fakebuf._cnt = 32767;
1650 fakebuf._flag = _IOWRT|_IOSTRG;
1651 _doprnt(pat, args, &fakebuf); /* what a kludge */
1652 (void)putc('\0', &fakebuf);
1653 #ifdef USE_CHAR_VSPRINTF
1656 return 0; /* perl doesn't use return value */
1660 #endif /* HAS_VPRINTF */
1663 #if BYTEORDER != 0x4321
1665 Perl_my_swap(pTHX_ short s)
1667 #if (BYTEORDER & 1) == 0
1670 result = ((s & 255) << 8) + ((s >> 8) & 255);
1678 Perl_my_htonl(pTHX_ long l)
1682 char c[sizeof(long)];
1685 #if BYTEORDER == 0x1234
1686 u.c[0] = (l >> 24) & 255;
1687 u.c[1] = (l >> 16) & 255;
1688 u.c[2] = (l >> 8) & 255;
1692 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1693 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
1698 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1699 u.c[o & 0xf] = (l >> s) & 255;
1707 Perl_my_ntohl(pTHX_ long l)
1711 char c[sizeof(long)];
1714 #if BYTEORDER == 0x1234
1715 u.c[0] = (l >> 24) & 255;
1716 u.c[1] = (l >> 16) & 255;
1717 u.c[2] = (l >> 8) & 255;
1721 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1722 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
1729 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1730 l |= (u.c[o & 0xf] & 255) << s;
1737 #endif /* BYTEORDER != 0x4321 */
1741 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1742 * If these functions are defined,
1743 * the BYTEORDER is neither 0x1234 nor 0x4321.
1744 * However, this is not assumed.
1748 #define HTOV(name,type) \
1750 name (register type n) \
1754 char c[sizeof(type)]; \
1758 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1759 u.c[i] = (n >> s) & 0xFF; \
1764 #define VTOH(name,type) \
1766 name (register type n) \
1770 char c[sizeof(type)]; \
1776 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1777 n += (u.c[i] & 0xFF) << s; \
1782 #if defined(HAS_HTOVS) && !defined(htovs)
1785 #if defined(HAS_HTOVL) && !defined(htovl)
1788 #if defined(HAS_VTOHS) && !defined(vtohs)
1791 #if defined(HAS_VTOHL) && !defined(vtohl)
1796 Perl_my_popen_list(pTHX_ char *mode, int n, SV **args)
1798 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE)
1800 register I32 This, that;
1806 PERL_FLUSHALL_FOR_CHILD;
1807 This = (*mode == 'w');
1811 taint_proper("Insecure %s%s", "EXEC");
1813 if (PerlProc_pipe(p) < 0)
1815 /* Try for another pipe pair for error return */
1816 if (PerlProc_pipe(pp) >= 0)
1818 while ((pid = vfork()) < 0) {
1819 if (errno != EAGAIN) {
1820 PerlLIO_close(p[This]);
1822 PerlLIO_close(pp[0]);
1823 PerlLIO_close(pp[1]);
1835 /* Close parent's end of _the_ pipe */
1836 PerlLIO_close(p[THAT]);
1837 /* Close parent's end of error status pipe (if any) */
1839 PerlLIO_close(pp[0]);
1840 #if defined(HAS_FCNTL) && defined(F_SETFD)
1841 /* Close error pipe automatically if exec works */
1842 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
1845 /* Now dup our end of _the_ pipe to right position */
1846 if (p[THIS] != (*mode == 'r')) {
1847 PerlLIO_dup2(p[THIS], *mode == 'r');
1848 PerlLIO_close(p[THIS]);
1850 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
1851 /* No automatic close - do it by hand */
1858 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) {
1864 do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes);
1870 do_execfree(); /* free any memory malloced by child on vfork */
1871 /* Close child's end of pipe */
1872 PerlLIO_close(p[that]);
1874 PerlLIO_close(pp[1]);
1875 /* Keep the lower of the two fd numbers */
1876 if (p[that] < p[This]) {
1877 PerlLIO_dup2(p[This], p[that]);
1878 PerlLIO_close(p[This]);
1882 sv = *av_fetch(PL_fdpid,p[This],TRUE);
1884 (void)SvUPGRADE(sv,SVt_IV);
1886 PL_forkprocess = pid;
1887 /* If we managed to get status pipe check for exec fail */
1888 if (did_pipes && pid > 0) {
1892 while (n < sizeof(int)) {
1893 n1 = PerlLIO_read(pp[0],
1894 (void*)(((char*)&errkid)+n),
1900 PerlLIO_close(pp[0]);
1902 if (n) { /* Error */
1904 if (n != sizeof(int))
1905 Perl_croak(aTHX_ "panic: kid popen errno read");
1907 pid2 = wait4pid(pid, &status, 0);
1908 } while (pid2 == -1 && errno == EINTR);
1909 errno = errkid; /* Propagate errno from kid */
1914 PerlLIO_close(pp[0]);
1915 return PerlIO_fdopen(p[This], mode);
1917 Perl_croak(aTHX_ "List form of piped open not implemented");
1918 return (PerlIO *) NULL;
1922 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1923 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1925 Perl_my_popen(pTHX_ char *cmd, char *mode)
1928 register I32 This, that;
1931 I32 doexec = strNE(cmd,"-");
1935 PERL_FLUSHALL_FOR_CHILD;
1938 return my_syspopen(aTHX_ cmd,mode);
1941 This = (*mode == 'w');
1943 if (doexec && PL_tainting) {
1945 taint_proper("Insecure %s%s", "EXEC");
1947 if (PerlProc_pipe(p) < 0)
1949 if (doexec && PerlProc_pipe(pp) >= 0)
1951 while ((pid = (doexec?vfork():fork())) < 0) {
1952 if (errno != EAGAIN) {
1953 PerlLIO_close(p[This]);
1955 PerlLIO_close(pp[0]);
1956 PerlLIO_close(pp[1]);
1959 Perl_croak(aTHX_ "Can't fork");
1971 PerlLIO_close(p[THAT]);
1973 PerlLIO_close(pp[0]);
1974 #if defined(HAS_FCNTL) && defined(F_SETFD)
1975 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
1978 if (p[THIS] != (*mode == 'r')) {
1979 PerlLIO_dup2(p[THIS], *mode == 'r');
1980 PerlLIO_close(p[THIS]);
1984 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
1993 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
1998 /* may or may not use the shell */
1999 do_exec3(cmd, pp[1], did_pipes);
2002 #endif /* defined OS2 */
2004 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
2005 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2007 hv_clear(PL_pidstatus); /* we have no children */
2012 do_execfree(); /* free any memory malloced by child on vfork */
2013 PerlLIO_close(p[that]);
2015 PerlLIO_close(pp[1]);
2016 if (p[that] < p[This]) {
2017 PerlLIO_dup2(p[This], p[that]);
2018 PerlLIO_close(p[This]);
2022 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2024 (void)SvUPGRADE(sv,SVt_IV);
2026 PL_forkprocess = pid;
2027 if (did_pipes && pid > 0) {
2031 while (n < sizeof(int)) {
2032 n1 = PerlLIO_read(pp[0],
2033 (void*)(((char*)&errkid)+n),
2039 PerlLIO_close(pp[0]);
2041 if (n) { /* Error */
2043 if (n != sizeof(int))
2044 Perl_croak(aTHX_ "panic: kid popen errno read");
2046 pid2 = wait4pid(pid, &status, 0);
2047 } while (pid2 == -1 && errno == EINTR);
2048 errno = errkid; /* Propagate errno from kid */
2053 PerlLIO_close(pp[0]);
2054 return PerlIO_fdopen(p[This], mode);
2057 #if defined(atarist)
2060 Perl_my_popen(pTHX_ char *cmd, char *mode)
2062 PERL_FLUSHALL_FOR_CHILD;
2063 /* Call system's popen() to get a FILE *, then import it.
2064 used 0 for 2nd parameter to PerlIO_importFILE;
2067 return PerlIO_importFILE(popen(cmd, mode), 0);
2071 FILE *djgpp_popen();
2073 Perl_my_popen(pTHX_ char *cmd, char *mode)
2075 PERL_FLUSHALL_FOR_CHILD;
2076 /* Call system's popen() to get a FILE *, then import it.
2077 used 0 for 2nd parameter to PerlIO_importFILE;
2080 return PerlIO_importFILE(djgpp_popen(cmd, mode), 0);
2085 #endif /* !DOSISH */
2089 Perl_dump_fds(pTHX_ char *s)
2092 struct stat tmpstatbuf;
2094 PerlIO_printf(Perl_debug_log,"%s", s);
2095 for (fd = 0; fd < 32; fd++) {
2096 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2097 PerlIO_printf(Perl_debug_log," %d",fd);
2099 PerlIO_printf(Perl_debug_log,"\n");
2101 #endif /* DUMP_FDS */
2105 dup2(int oldfd, int newfd)
2107 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2110 PerlLIO_close(newfd);
2111 return fcntl(oldfd, F_DUPFD, newfd);
2113 #define DUP2_MAX_FDS 256
2114 int fdtmp[DUP2_MAX_FDS];
2120 PerlLIO_close(newfd);
2121 /* good enough for low fd's... */
2122 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2123 if (fdx >= DUP2_MAX_FDS) {
2131 PerlLIO_close(fdtmp[--fdx]);
2138 #ifdef HAS_SIGACTION
2141 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2143 struct sigaction act, oact;
2145 act.sa_handler = handler;
2146 sigemptyset(&act.sa_mask);
2149 #if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
2150 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2154 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2155 act.sa_flags |= SA_NOCLDWAIT;
2157 if (sigaction(signo, &act, &oact) == -1)
2160 return oact.sa_handler;
2164 Perl_rsignal_state(pTHX_ int signo)
2166 struct sigaction oact;
2168 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2171 return oact.sa_handler;
2175 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2177 struct sigaction act;
2179 act.sa_handler = handler;
2180 sigemptyset(&act.sa_mask);
2183 #if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
2184 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2188 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2189 act.sa_flags |= SA_NOCLDWAIT;
2191 return sigaction(signo, &act, save);
2195 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2197 return sigaction(signo, save, (struct sigaction *)NULL);
2200 #else /* !HAS_SIGACTION */
2203 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2205 return PerlProc_signal(signo, handler);
2208 static int sig_trapped;
2218 Perl_rsignal_state(pTHX_ int signo)
2220 Sighandler_t oldsig;
2223 oldsig = PerlProc_signal(signo, sig_trap);
2224 PerlProc_signal(signo, oldsig);
2226 PerlProc_kill(PerlProc_getpid(), signo);
2231 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2233 *save = PerlProc_signal(signo, handler);
2234 return (*save == SIG_ERR) ? -1 : 0;
2238 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2240 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2243 #endif /* !HAS_SIGACTION */
2244 #endif /* !PERL_MICRO */
2246 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2247 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2249 Perl_my_pclose(pTHX_ PerlIO *ptr)
2251 Sigsave_t hstat, istat, qstat;
2257 int saved_errno = 0;
2259 int saved_vaxc_errno;
2262 int saved_win32_errno;
2266 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2268 pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1;
2270 *svp = &PL_sv_undef;
2272 if (pid == -1) { /* Opened by popen. */
2273 return my_syspclose(ptr);
2276 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2277 saved_errno = errno;
2279 saved_vaxc_errno = vaxc$errno;
2282 saved_win32_errno = GetLastError();
2286 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2289 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2290 rsignal_save(SIGINT, SIG_IGN, &istat);
2291 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2294 pid2 = wait4pid(pid, &status, 0);
2295 } while (pid2 == -1 && errno == EINTR);
2297 rsignal_restore(SIGHUP, &hstat);
2298 rsignal_restore(SIGINT, &istat);
2299 rsignal_restore(SIGQUIT, &qstat);
2302 SETERRNO(saved_errno, saved_vaxc_errno);
2305 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2307 #endif /* !DOSISH */
2309 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL)
2311 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2315 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2319 char spid[TYPE_CHARS(int)];
2322 sprintf(spid, "%"IVdf, (IV)pid);
2323 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2324 if (svp && *svp != &PL_sv_undef) {
2325 *statusp = SvIVX(*svp);
2326 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2333 hv_iterinit(PL_pidstatus);
2334 if ((entry = hv_iternext(PL_pidstatus))) {
2335 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2336 sv = hv_iterval(PL_pidstatus,entry);
2337 *statusp = SvIVX(sv);
2338 sprintf(spid, "%"IVdf, (IV)pid);
2339 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2346 # ifdef HAS_WAITPID_RUNTIME
2347 if (!HAS_WAITPID_RUNTIME)
2350 return PerlProc_waitpid(pid,statusp,flags);
2352 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2353 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2355 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2360 Perl_croak(aTHX_ "Can't do waitpid with flags");
2362 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2363 pidgone(result,*statusp);
2371 #endif /* !DOSISH || OS2 || WIN32 || NETWARE */
2375 Perl_pidgone(pTHX_ Pid_t pid, int status)
2378 char spid[TYPE_CHARS(int)];
2380 sprintf(spid, "%"IVdf, (IV)pid);
2381 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2382 (void)SvUPGRADE(sv,SVt_IV);
2387 #if defined(atarist) || defined(OS2)
2390 int /* Cannot prototype with I32
2392 my_syspclose(PerlIO *ptr)
2395 Perl_my_pclose(pTHX_ PerlIO *ptr)
2398 /* Needs work for PerlIO ! */
2399 FILE *f = PerlIO_findFILE(ptr);
2400 I32 result = pclose(f);
2401 PerlIO_releaseFILE(ptr,f);
2409 Perl_my_pclose(pTHX_ PerlIO *ptr)
2411 /* Needs work for PerlIO ! */
2412 FILE *f = PerlIO_findFILE(ptr);
2413 I32 result = djgpp_pclose(f);
2414 result = (result << 8) & 0xff00;
2415 PerlIO_releaseFILE(ptr,f);
2421 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2424 register const char *frombase = from;
2427 register const char c = *from;
2432 while (count-- > 0) {
2433 for (todo = len; todo > 0; todo--) {
2442 Perl_same_dirent(pTHX_ char *a, char *b)
2444 char *fa = strrchr(a,'/');
2445 char *fb = strrchr(b,'/');
2446 struct stat tmpstatbuf1;
2447 struct stat tmpstatbuf2;
2448 SV *tmpsv = sv_newmortal();
2461 sv_setpv(tmpsv, ".");
2463 sv_setpvn(tmpsv, a, fa - a);
2464 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2467 sv_setpv(tmpsv, ".");
2469 sv_setpvn(tmpsv, b, fb - b);
2470 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2472 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2473 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2475 #endif /* !HAS_RENAME */
2478 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
2480 char *xfound = Nullch;
2481 char *xfailed = Nullch;
2482 char tmpbuf[MAXPATHLEN];
2486 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2487 # define SEARCH_EXTS ".bat", ".cmd", NULL
2488 # define MAX_EXT_LEN 4
2491 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2492 # define MAX_EXT_LEN 4
2495 # define SEARCH_EXTS ".pl", ".com", NULL
2496 # define MAX_EXT_LEN 4
2498 /* additional extensions to try in each dir if scriptname not found */
2500 char *exts[] = { SEARCH_EXTS };
2501 char **ext = search_ext ? search_ext : exts;
2502 int extidx = 0, i = 0;
2503 char *curext = Nullch;
2505 # define MAX_EXT_LEN 0
2509 * If dosearch is true and if scriptname does not contain path
2510 * delimiters, search the PATH for scriptname.
2512 * If SEARCH_EXTS is also defined, will look for each
2513 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2514 * while searching the PATH.
2516 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2517 * proceeds as follows:
2518 * If DOSISH or VMSISH:
2519 * + look for ./scriptname{,.foo,.bar}
2520 * + search the PATH for scriptname{,.foo,.bar}
2523 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2524 * this will not look in '.' if it's not in the PATH)
2529 # ifdef ALWAYS_DEFTYPES
2530 len = strlen(scriptname);
2531 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2532 int hasdir, idx = 0, deftypes = 1;
2535 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2538 int hasdir, idx = 0, deftypes = 1;
2541 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2543 /* The first time through, just add SEARCH_EXTS to whatever we
2544 * already have, so we can check for default file types. */
2546 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
2552 if ((strlen(tmpbuf) + strlen(scriptname)
2553 + MAX_EXT_LEN) >= sizeof tmpbuf)
2554 continue; /* don't search dir with too-long name */
2555 strcat(tmpbuf, scriptname);
2559 if (strEQ(scriptname, "-"))
2561 if (dosearch) { /* Look in '.' first. */
2562 char *cur = scriptname;
2564 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2566 if (strEQ(ext[i++],curext)) {
2567 extidx = -1; /* already has an ext */
2572 DEBUG_p(PerlIO_printf(Perl_debug_log,
2573 "Looking for %s\n",cur));
2574 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2575 && !S_ISDIR(PL_statbuf.st_mode)) {
2583 if (cur == scriptname) {
2584 len = strlen(scriptname);
2585 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
2587 cur = strcpy(tmpbuf, scriptname);
2589 } while (extidx >= 0 && ext[extidx] /* try an extension? */
2590 && strcpy(tmpbuf+len, ext[extidx++]));
2595 #ifdef MACOS_TRADITIONAL
2596 if (dosearch && !strchr(scriptname, ':') &&
2597 (s = PerlEnv_getenv("Commands")))
2599 if (dosearch && !strchr(scriptname, '/')
2601 && !strchr(scriptname, '\\')
2603 && (s = PerlEnv_getenv("PATH")))
2608 PL_bufend = s + strlen(s);
2609 while (s < PL_bufend) {
2610 #ifdef MACOS_TRADITIONAL
2611 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
2615 #if defined(atarist) || defined(DOSISH)
2620 && *s != ';'; len++, s++) {
2621 if (len < sizeof tmpbuf)
2624 if (len < sizeof tmpbuf)
2626 #else /* ! (atarist || DOSISH) */
2627 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
2630 #endif /* ! (atarist || DOSISH) */
2631 #endif /* MACOS_TRADITIONAL */
2634 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
2635 continue; /* don't search dir with too-long name */
2636 #ifdef MACOS_TRADITIONAL
2637 if (len && tmpbuf[len - 1] != ':')
2638 tmpbuf[len++] = ':';
2641 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
2642 && tmpbuf[len - 1] != '/'
2643 && tmpbuf[len - 1] != '\\'
2646 tmpbuf[len++] = '/';
2647 if (len == 2 && tmpbuf[0] == '.')
2650 (void)strcpy(tmpbuf + len, scriptname);
2654 len = strlen(tmpbuf);
2655 if (extidx > 0) /* reset after previous loop */
2659 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
2660 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
2661 if (S_ISDIR(PL_statbuf.st_mode)) {
2665 } while ( retval < 0 /* not there */
2666 && extidx>=0 && ext[extidx] /* try an extension? */
2667 && strcpy(tmpbuf+len, ext[extidx++])
2672 if (S_ISREG(PL_statbuf.st_mode)
2673 && cando(S_IRUSR,TRUE,&PL_statbuf)
2674 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
2675 && cando(S_IXUSR,TRUE,&PL_statbuf)
2679 xfound = tmpbuf; /* bingo! */
2683 xfailed = savepv(tmpbuf);
2686 if (!xfound && !seen_dot && !xfailed &&
2687 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
2688 || S_ISDIR(PL_statbuf.st_mode)))
2690 seen_dot = 1; /* Disable message. */
2692 if (flags & 1) { /* do or die? */
2693 Perl_croak(aTHX_ "Can't %s %s%s%s",
2694 (xfailed ? "execute" : "find"),
2695 (xfailed ? xfailed : scriptname),
2696 (xfailed ? "" : " on PATH"),
2697 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2699 scriptname = Nullch;
2703 scriptname = xfound;
2705 return (scriptname ? savepv(scriptname) : Nullch);
2708 #ifndef PERL_GET_CONTEXT_DEFINED
2711 Perl_get_context(void)
2713 #if defined(USE_THREADS) || defined(USE_ITHREADS)
2714 # ifdef OLD_PTHREADS_API
2716 if (pthread_getspecific(PL_thr_key, &t))
2717 Perl_croak_nocontext("panic: pthread_getspecific");
2720 # ifdef I_MACH_CTHREADS
2721 return (void*)cthread_data(cthread_self());
2723 return (void*)PTHREAD_GETSPECIFIC(PL_thr_key);
2732 Perl_set_context(void *t)
2734 #if defined(USE_THREADS) || defined(USE_ITHREADS)
2735 # ifdef I_MACH_CTHREADS
2736 cthread_set_data(cthread_self(), t);
2738 if (pthread_setspecific(PL_thr_key, t))
2739 Perl_croak_nocontext("panic: pthread_setspecific");
2744 #endif /* !PERL_GET_CONTEXT_DEFINED */
2749 /* Very simplistic scheduler for now */
2753 thr = thr->i.next_run;
2757 Perl_cond_init(pTHX_ perl_cond *cp)
2763 Perl_cond_signal(pTHX_ perl_cond *cp)
2766 perl_cond cond = *cp;
2771 /* Insert t in the runnable queue just ahead of us */
2772 t->i.next_run = thr->i.next_run;
2773 thr->i.next_run->i.prev_run = t;
2774 t->i.prev_run = thr;
2775 thr->i.next_run = t;
2776 thr->i.wait_queue = 0;
2777 /* Remove from the wait queue */
2783 Perl_cond_broadcast(pTHX_ perl_cond *cp)
2786 perl_cond cond, cond_next;
2788 for (cond = *cp; cond; cond = cond_next) {
2790 /* Insert t in the runnable queue just ahead of us */
2791 t->i.next_run = thr->i.next_run;
2792 thr->i.next_run->i.prev_run = t;
2793 t->i.prev_run = thr;
2794 thr->i.next_run = t;
2795 thr->i.wait_queue = 0;
2796 /* Remove from the wait queue */
2797 cond_next = cond->next;
2804 Perl_cond_wait(pTHX_ perl_cond *cp)
2808 if (thr->i.next_run == thr)
2809 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
2811 New(666, cond, 1, struct perl_wait_queue);
2815 thr->i.wait_queue = cond;
2816 /* Remove ourselves from runnable queue */
2817 thr->i.next_run->i.prev_run = thr->i.prev_run;
2818 thr->i.prev_run->i.next_run = thr->i.next_run;
2820 #endif /* FAKE_THREADS */
2823 Perl_condpair_magic(pTHX_ SV *sv)
2827 (void)SvUPGRADE(sv, SVt_PVMG);
2828 mg = mg_find(sv, PERL_MAGIC_mutex);
2832 New(53, cp, 1, condpair_t);
2833 MUTEX_INIT(&cp->mutex);
2834 COND_INIT(&cp->owner_cond);
2835 COND_INIT(&cp->cond);
2837 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
2838 mg = mg_find(sv, PERL_MAGIC_mutex);
2840 /* someone else beat us to initialising it */
2841 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
2842 MUTEX_DESTROY(&cp->mutex);
2843 COND_DESTROY(&cp->owner_cond);
2844 COND_DESTROY(&cp->cond);
2848 sv_magic(sv, Nullsv, PERL_MAGIC_mutex, 0, 0);
2850 mg->mg_ptr = (char *)cp;
2851 mg->mg_len = sizeof(cp);
2852 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
2853 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
2854 "%p: condpair_magic %p\n", thr, sv)));
2861 Perl_sv_lock(pTHX_ SV *osv)
2871 mg = condpair_magic(sv);
2872 MUTEX_LOCK(MgMUTEXP(mg));
2873 if (MgOWNER(mg) == thr)
2874 MUTEX_UNLOCK(MgMUTEXP(mg));
2877 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
2879 DEBUG_S(PerlIO_printf(Perl_debug_log,
2880 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
2881 PTR2UV(thr), PTR2UV(sv)));
2882 MUTEX_UNLOCK(MgMUTEXP(mg));
2883 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
2885 UNLOCK_SV_LOCK_MUTEX;
2890 * Make a new perl thread structure using t as a prototype. Some of the
2891 * fields for the new thread are copied from the prototype thread, t,
2892 * so t should not be running in perl at the time this function is
2893 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2894 * thread calling new_struct_thread) clearly satisfies this constraint.
2896 struct perl_thread *
2897 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
2899 #if !defined(PERL_IMPLICIT_CONTEXT)
2900 struct perl_thread *thr;
2906 sv = newSVpvn("", 0);
2907 SvGROW(sv, sizeof(struct perl_thread) + 1);
2908 SvCUR_set(sv, sizeof(struct perl_thread));
2909 thr = (Thread) SvPVX(sv);
2911 memset(thr, 0xab, sizeof(struct perl_thread));
2918 Zero(&PL_hv_fetch_ent_mh, 1, HE);
2919 PL_efloatbuf = (char*)NULL;
2922 Zero(thr, 1, struct perl_thread);
2928 PL_curcop = &PL_compiling;
2929 thr->interp = t->interp;
2930 thr->cvcache = newHV();
2931 thr->threadsv = newAV();
2932 thr->specific = newAV();
2933 thr->errsv = newSVpvn("", 0);
2934 thr->flags = THRf_R_JOINABLE;
2936 MUTEX_INIT(&thr->mutex);
2940 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
2943 PL_statname = NEWSV(66,0);
2944 PL_errors = newSVpvn("", 0);
2946 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
2947 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
2948 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
2949 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
2950 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
2952 PL_reginterp_cnt = 0;
2953 PL_lastscream = Nullsv;
2956 PL_reg_start_tmp = 0;
2957 PL_reg_start_tmpl = 0;
2958 PL_reg_poscache = Nullch;
2960 /* parent thread's data needs to be locked while we make copy */
2961 MUTEX_LOCK(&t->mutex);
2963 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2964 PL_protect = t->Tprotect;
2967 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
2968 PL_defstash = t->Tdefstash; /* XXX maybe these should */
2969 PL_curstash = t->Tcurstash; /* always be set to main? */
2971 PL_tainted = t->Ttainted;
2972 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
2973 PL_nrs = newSVsv(t->Tnrs);
2974 PL_rs = t->Tnrs ? SvREFCNT_inc(PL_nrs) : Nullsv;
2975 PL_last_in_gv = Nullgv;
2976 PL_ofs_sv = t->Tofs_sv ? SvREFCNT_inc(PL_ofs_sv) : Nullsv;
2977 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2978 PL_chopset = t->Tchopset;
2979 PL_bodytarget = newSVsv(t->Tbodytarget);
2980 PL_toptarget = newSVsv(t->Ttoptarget);
2981 if (t->Tformtarget == t->Ttoptarget)
2982 PL_formtarget = PL_toptarget;
2984 PL_formtarget = PL_bodytarget;
2986 /* Initialise all per-thread SVs that the template thread used */
2987 svp = AvARRAY(t->threadsv);
2988 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
2989 if (*svp && *svp != &PL_sv_undef) {
2990 SV *sv = newSVsv(*svp);
2991 av_store(thr->threadsv, i, sv);
2992 sv_magic(sv, 0, PERL_MAGIC_sv, &PL_threadsv_names[i], 1);
2993 DEBUG_S(PerlIO_printf(Perl_debug_log,
2994 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
2998 thr->threadsvp = AvARRAY(thr->threadsv);
3000 MUTEX_LOCK(&PL_threads_mutex);
3002 thr->tid = ++PL_threadnum;
3003 thr->next = t->next;
3006 thr->next->prev = thr;
3007 MUTEX_UNLOCK(&PL_threads_mutex);
3009 /* done copying parent's state */
3010 MUTEX_UNLOCK(&t->mutex);
3012 #ifdef HAVE_THREAD_INTERN
3013 Perl_init_thread_intern(thr);
3014 #endif /* HAVE_THREAD_INTERN */
3017 #endif /* USE_THREADS */
3019 #ifdef PERL_GLOBAL_STRUCT
3028 Perl_get_op_names(pTHX)
3034 Perl_get_op_descs(pTHX)
3040 Perl_get_no_modify(pTHX)
3042 return (char*)PL_no_modify;
3046 Perl_get_opargs(pTHX)
3052 Perl_get_ppaddr(pTHX)
3054 return (PPADDR_t*)PL_ppaddr;
3057 #ifndef HAS_GETENV_LEN
3059 Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
3061 char *env_trans = PerlEnv_getenv(env_elem);
3063 *len = strlen(env_trans);
3070 Perl_get_vtbl(pTHX_ int vtbl_id)
3072 MGVTBL* result = Null(MGVTBL*);
3076 result = &PL_vtbl_sv;
3079 result = &PL_vtbl_env;
3081 case want_vtbl_envelem:
3082 result = &PL_vtbl_envelem;
3085 result = &PL_vtbl_sig;
3087 case want_vtbl_sigelem:
3088 result = &PL_vtbl_sigelem;
3090 case want_vtbl_pack:
3091 result = &PL_vtbl_pack;
3093 case want_vtbl_packelem:
3094 result = &PL_vtbl_packelem;
3096 case want_vtbl_dbline:
3097 result = &PL_vtbl_dbline;
3100 result = &PL_vtbl_isa;
3102 case want_vtbl_isaelem:
3103 result = &PL_vtbl_isaelem;
3105 case want_vtbl_arylen:
3106 result = &PL_vtbl_arylen;
3108 case want_vtbl_glob:
3109 result = &PL_vtbl_glob;
3111 case want_vtbl_mglob:
3112 result = &PL_vtbl_mglob;
3114 case want_vtbl_nkeys:
3115 result = &PL_vtbl_nkeys;
3117 case want_vtbl_taint:
3118 result = &PL_vtbl_taint;
3120 case want_vtbl_substr:
3121 result = &PL_vtbl_substr;
3124 result = &PL_vtbl_vec;
3127 result = &PL_vtbl_pos;
3130 result = &PL_vtbl_bm;
3133 result = &PL_vtbl_fm;
3135 case want_vtbl_uvar:
3136 result = &PL_vtbl_uvar;
3139 case want_vtbl_mutex:
3140 result = &PL_vtbl_mutex;
3143 case want_vtbl_defelem:
3144 result = &PL_vtbl_defelem;
3146 case want_vtbl_regexp:
3147 result = &PL_vtbl_regexp;
3149 case want_vtbl_regdata:
3150 result = &PL_vtbl_regdata;
3152 case want_vtbl_regdatum:
3153 result = &PL_vtbl_regdatum;
3155 #ifdef USE_LOCALE_COLLATE
3156 case want_vtbl_collxfrm:
3157 result = &PL_vtbl_collxfrm;
3160 case want_vtbl_amagic:
3161 result = &PL_vtbl_amagic;
3163 case want_vtbl_amagicelem:
3164 result = &PL_vtbl_amagicelem;
3166 case want_vtbl_backref:
3167 result = &PL_vtbl_backref;
3174 Perl_my_fflush_all(pTHX)
3176 #if defined(FFLUSH_NULL)
3177 return PerlIO_flush(NULL);
3179 # if defined(HAS__FWALK)
3180 /* undocumented, unprototyped, but very useful BSDism */
3181 extern void _fwalk(int (*)(FILE *));
3185 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3187 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3188 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3190 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3191 open_max = sysconf(_SC_OPEN_MAX);
3194 open_max = FOPEN_MAX;
3197 open_max = OPEN_MAX;
3208 for (i = 0; i < open_max; i++)
3209 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3210 STDIO_STREAM_ARRAY[i]._file < open_max &&
3211 STDIO_STREAM_ARRAY[i]._flag)
3212 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3216 SETERRNO(EBADF,RMS$_IFI);
3223 Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3228 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3229 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
3231 char *pars = OP_IS_FILETEST(op) ? "" : "()";
3232 char *type = OP_IS_SOCKET(op) ||
3233 (gv && io && IoTYPE(io) == IoTYPE_SOCKET) ?
3234 "socket" : "filehandle";
3237 if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) {
3239 warn_type = WARN_CLOSED;
3243 warn_type = WARN_UNOPENED;
3246 if (gv && isGV(gv)) {
3247 SV *sv = sv_newmortal();
3248 gv_efullname4(sv, gv, Nullch, FALSE);
3252 if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {
3254 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for %sput",
3256 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3258 Perl_warner(aTHX_ WARN_IO, "Filehandle opened only for %sput",
3259 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3260 } else if (name && *name) {
3261 Perl_warner(aTHX_ warn_type,
3262 "%s%s on %s %s %s", func, pars, vile, type, name);
3263 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3264 Perl_warner(aTHX_ warn_type,
3265 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3269 Perl_warner(aTHX_ warn_type,
3270 "%s%s on %s %s", func, pars, vile, type);
3271 if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3272 Perl_warner(aTHX_ warn_type,
3273 "\t(Are you trying to call %s%s on dirhandle?)\n",
3279 /* in ASCII order, not that it matters */
3280 static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
3283 Perl_ebcdic_control(pTHX_ int ch)
3291 if ((ctlp = strchr(controllablechars, ch)) == 0) {
3292 Perl_die(aTHX_ "unrecognised control character '%c'\n", ch);
3295 if (ctlp == controllablechars)
3296 return('\177'); /* DEL */
3298 return((unsigned char)(ctlp - controllablechars - 1));
3299 } else { /* Want uncontrol */
3300 if (ch == '\177' || ch == -1)
3302 else if (ch == '\157')
3304 else if (ch == '\174')
3306 else if (ch == '^') /* '\137' in 1047, '\260' in 819 */
3308 else if (ch == '\155')
3310 else if (0 < ch && ch < (sizeof(controllablechars) - 1))
3311 return(controllablechars[ch+1]);
3313 Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF);
3318 /* XXX struct tm on some systems (SunOS4/BSD) contains extra (non POSIX)
3319 * fields for which we don't have Configure support yet:
3320 * char *tm_zone; -- abbreviation of timezone name
3321 * long tm_gmtoff; -- offset from GMT in seconds
3322 * To workaround core dumps from the uninitialised tm_zone we get the
3323 * system to give us a reasonable struct to copy. This fix means that
3324 * strftime uses the tm_zone and tm_gmtoff values returned by
3325 * localtime(time()). That should give the desired result most of the
3326 * time. But probably not always!
3328 * This is a temporary workaround to be removed once Configure
3329 * support is added and NETaa14816 is considered in full.
3330 * It does not address tzname aspects of NETaa14816.
3333 # ifndef STRUCT_TM_HASZONE
3334 # define STRUCT_TM_HASZONE
3339 Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */
3341 #ifdef STRUCT_TM_HASZONE
3344 Copy(localtime(&now), ptm, 1, struct tm);
3349 * mini_mktime - normalise struct tm values without the localtime()
3350 * semantics (and overhead) of mktime().
3353 Perl_mini_mktime(pTHX_ struct tm *ptm)
3357 int month, mday, year, jday;
3358 int odd_cent, odd_year;
3360 #define DAYS_PER_YEAR 365
3361 #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1)
3362 #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1)
3363 #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1)
3364 #define SECS_PER_HOUR (60*60)
3365 #define SECS_PER_DAY (24*SECS_PER_HOUR)
3366 /* parentheses deliberately absent on these two, otherwise they don't work */
3367 #define MONTH_TO_DAYS 153/5
3368 #define DAYS_TO_MONTH 5/153
3369 /* offset to bias by March (month 4) 1st between month/mday & year finding */
3370 #define YEAR_ADJUST (4*MONTH_TO_DAYS+1)
3371 /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */
3372 #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */
3375 * Year/day algorithm notes:
3377 * With a suitable offset for numeric value of the month, one can find
3378 * an offset into the year by considering months to have 30.6 (153/5) days,
3379 * using integer arithmetic (i.e., with truncation). To avoid too much
3380 * messing about with leap days, we consider January and February to be
3381 * the 13th and 14th month of the previous year. After that transformation,
3382 * we need the month index we use to be high by 1 from 'normal human' usage,
3383 * so the month index values we use run from 4 through 15.
3385 * Given that, and the rules for the Gregorian calendar (leap years are those
3386 * divisible by 4 unless also divisible by 100, when they must be divisible
3387 * by 400 instead), we can simply calculate the number of days since some
3388 * arbitrary 'beginning of time' by futzing with the (adjusted) year number,
3389 * the days we derive from our month index, and adding in the day of the
3390 * month. The value used here is not adjusted for the actual origin which
3391 * it normally would use (1 January A.D. 1), since we're not exposing it.
3392 * We're only building the value so we can turn around and get the
3393 * normalised values for the year, month, day-of-month, and day-of-year.
3395 * For going backward, we need to bias the value we're using so that we find
3396 * the right year value. (Basically, we don't want the contribution of
3397 * March 1st to the number to apply while deriving the year). Having done
3398 * that, we 'count up' the contribution to the year number by accounting for
3399 * full quadracenturies (400-year periods) with their extra leap days, plus
3400 * the contribution from full centuries (to avoid counting in the lost leap
3401 * days), plus the contribution from full quad-years (to count in the normal
3402 * leap days), plus the leftover contribution from any non-leap years.
3403 * At this point, if we were working with an actual leap day, we'll have 0
3404 * days left over. This is also true for March 1st, however. So, we have
3405 * to special-case that result, and (earlier) keep track of the 'odd'
3406 * century and year contributions. If we got 4 extra centuries in a qcent,
3407 * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb.
3408 * Otherwise, we add back in the earlier bias we removed (the 123 from
3409 * figuring in March 1st), find the month index (integer division by 30.6),
3410 * and the remainder is the day-of-month. We then have to convert back to
3411 * 'real' months (including fixing January and February from being 14/15 in
3412 * the previous year to being in the proper year). After that, to get
3413 * tm_yday, we work with the normalised year and get a new yearday value for
3414 * January 1st, which we subtract from the yearday value we had earlier,
3415 * representing the date we've re-built. This is done from January 1
3416 * because tm_yday is 0-origin.
3418 * Since POSIX time routines are only guaranteed to work for times since the
3419 * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm
3420 * applies Gregorian calendar rules even to dates before the 16th century
3421 * doesn't bother me. Besides, you'd need cultural context for a given
3422 * date to know whether it was Julian or Gregorian calendar, and that's
3423 * outside the scope for this routine. Since we convert back based on the
3424 * same rules we used to build the yearday, you'll only get strange results
3425 * for input which needed normalising, or for the 'odd' century years which
3426 * were leap years in the Julian calander but not in the Gregorian one.
3427 * I can live with that.
3429 * This algorithm also fails to handle years before A.D. 1 gracefully, but
3430 * that's still outside the scope for POSIX time manipulation, so I don't
3434 year = 1900 + ptm->tm_year;
3435 month = ptm->tm_mon;
3436 mday = ptm->tm_mday;
3437 /* allow given yday with no month & mday to dominate the result */
3438 if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) {
3441 jday = 1 + ptm->tm_yday;
3450 yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400;
3451 yearday += month*MONTH_TO_DAYS + mday + jday;
3453 * Note that we don't know when leap-seconds were or will be,
3454 * so we have to trust the user if we get something which looks
3455 * like a sensible leap-second. Wild values for seconds will
3456 * be rationalised, however.
3458 if ((unsigned) ptm->tm_sec <= 60) {
3465 secs += 60 * ptm->tm_min;
3466 secs += SECS_PER_HOUR * ptm->tm_hour;
3468 if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) {
3469 /* got negative remainder, but need positive time */
3470 /* back off an extra day to compensate */
3471 yearday += (secs/SECS_PER_DAY)-1;
3472 secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1);
3475 yearday += (secs/SECS_PER_DAY);
3476 secs -= SECS_PER_DAY * (secs/SECS_PER_DAY);
3479 else if (secs >= SECS_PER_DAY) {
3480 yearday += (secs/SECS_PER_DAY);
3481 secs %= SECS_PER_DAY;
3483 ptm->tm_hour = secs/SECS_PER_HOUR;
3484 secs %= SECS_PER_HOUR;
3485 ptm->tm_min = secs/60;
3487 ptm->tm_sec += secs;
3488 /* done with time of day effects */
3490 * The algorithm for yearday has (so far) left it high by 428.
3491 * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to
3492 * bias it by 123 while trying to figure out what year it
3493 * really represents. Even with this tweak, the reverse
3494 * translation fails for years before A.D. 0001.
3495 * It would still fail for Feb 29, but we catch that one below.
3497 jday = yearday; /* save for later fixup vis-a-vis Jan 1 */
3498 yearday -= YEAR_ADJUST;
3499 year = (yearday / DAYS_PER_QCENT) * 400;
3500 yearday %= DAYS_PER_QCENT;
3501 odd_cent = yearday / DAYS_PER_CENT;
3502 year += odd_cent * 100;
3503 yearday %= DAYS_PER_CENT;
3504 year += (yearday / DAYS_PER_QYEAR) * 4;
3505 yearday %= DAYS_PER_QYEAR;
3506 odd_year = yearday / DAYS_PER_YEAR;
3508 yearday %= DAYS_PER_YEAR;
3509 if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */
3514 yearday += YEAR_ADJUST; /* recover March 1st crock */
3515 month = yearday*DAYS_TO_MONTH;
3516 yearday -= month*MONTH_TO_DAYS;
3517 /* recover other leap-year adjustment */
3526 ptm->tm_year = year - 1900;
3528 ptm->tm_mday = yearday;
3529 ptm->tm_mon = month;
3533 ptm->tm_mon = month - 1;
3535 /* re-build yearday based on Jan 1 to get tm_yday */
3537 yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400;
3538 yearday += 14*MONTH_TO_DAYS + 1;
3539 ptm->tm_yday = jday - yearday;
3540 /* fix tm_wday if not overridden by caller */
3541 if ((unsigned)ptm->tm_wday > 6)
3542 ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7;
3546 Perl_my_strftime(pTHX_ char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst)
3554 init_tm(&mytm); /* XXX workaround - see init_tm() above */
3557 mytm.tm_hour = hour;
3558 mytm.tm_mday = mday;
3560 mytm.tm_year = year;
3561 mytm.tm_wday = wday;
3562 mytm.tm_yday = yday;
3563 mytm.tm_isdst = isdst;
3566 New(0, buf, buflen, char);
3567 len = strftime(buf, buflen, fmt, &mytm);
3569 ** The following is needed to handle to the situation where
3570 ** tmpbuf overflows. Basically we want to allocate a buffer
3571 ** and try repeatedly. The reason why it is so complicated
3572 ** is that getting a return value of 0 from strftime can indicate
3573 ** one of the following:
3574 ** 1. buffer overflowed,
3575 ** 2. illegal conversion specifier, or
3576 ** 3. the format string specifies nothing to be returned(not
3577 ** an error). This could be because format is an empty string
3578 ** or it specifies %p that yields an empty string in some locale.
3579 ** If there is a better way to make it portable, go ahead by
3582 if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0'))
3585 /* Possibly buf overflowed - try again with a bigger buf */
3586 int fmtlen = strlen(fmt);
3587 int bufsize = fmtlen + buflen;
3589 New(0, buf, bufsize, char);
3591 buflen = strftime(buf, bufsize, fmt, &mytm);
3592 if (buflen > 0 && buflen < bufsize)
3594 /* heuristic to prevent out-of-memory errors */
3595 if (bufsize > 100*fmtlen) {
3601 Renew(buf, bufsize, char);
3606 Perl_croak(aTHX_ "panic: no strftime");
3611 #define SV_CWD_RETURN_UNDEF \
3612 sv_setsv(sv, &PL_sv_undef); \
3615 #define SV_CWD_ISDOT(dp) \
3616 (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
3617 (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
3620 =for apidoc getcwd_sv
3622 Fill the sv with current working directory
3627 /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars.
3628 * rewritten again by dougm, optimized for use with xs TARG, and to prefer
3629 * getcwd(3) if available
3630 * Comments from the orignal:
3631 * This is a faster version of getcwd. It's also more dangerous
3632 * because you might chdir out of a directory that you can't chdir
3636 Perl_getcwd_sv(pTHX_ register SV *sv)
3642 char buf[MAXPATHLEN];
3644 /* Some getcwd()s automatically allocate a buffer of the given
3645 * size from the heap if they are given a NULL buffer pointer.
3646 * The problem is that this behaviour is not portable. */
3647 if (getcwd(buf, sizeof(buf) - 1)) {
3648 STRLEN len = strlen(buf);
3649 sv_setpvn(sv, buf, len);
3653 sv_setsv(sv, &PL_sv_undef);
3660 struct stat statbuf;
3661 int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino;
3662 int namelen, pathlen=0;
3666 (void)SvUPGRADE(sv, SVt_PV);
3668 if (PerlLIO_lstat(".", &statbuf) < 0) {
3669 SV_CWD_RETURN_UNDEF;
3672 orig_cdev = statbuf.st_dev;
3673 orig_cino = statbuf.st_ino;
3681 if (PerlDir_chdir("..") < 0) {
3682 SV_CWD_RETURN_UNDEF;
3684 if (PerlLIO_stat(".", &statbuf) < 0) {
3685 SV_CWD_RETURN_UNDEF;
3688 cdev = statbuf.st_dev;
3689 cino = statbuf.st_ino;
3691 if (odev == cdev && oino == cino) {
3694 if (!(dir = PerlDir_open("."))) {
3695 SV_CWD_RETURN_UNDEF;
3698 while ((dp = PerlDir_read(dir)) != NULL) {
3700 namelen = dp->d_namlen;
3702 namelen = strlen(dp->d_name);
3705 if (SV_CWD_ISDOT(dp)) {
3709 if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) {
3710 SV_CWD_RETURN_UNDEF;
3713 tdev = statbuf.st_dev;
3714 tino = statbuf.st_ino;
3715 if (tino == oino && tdev == odev) {
3721 SV_CWD_RETURN_UNDEF;
3724 if (pathlen + namelen + 1 >= MAXPATHLEN) {
3725 SV_CWD_RETURN_UNDEF;
3728 SvGROW(sv, pathlen + namelen + 1);
3732 Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char);
3735 /* prepend current directory to the front */
3737 Move(dp->d_name, SvPVX(sv)+1, namelen, char);
3738 pathlen += (namelen + 1);
3740 #ifdef VOID_CLOSEDIR
3743 if (PerlDir_close(dir) < 0) {
3744 SV_CWD_RETURN_UNDEF;
3750 SvCUR_set(sv, pathlen);
3754 if (PerlDir_chdir(SvPVX(sv)) < 0) {
3755 SV_CWD_RETURN_UNDEF;
3758 if (PerlLIO_stat(".", &statbuf) < 0) {
3759 SV_CWD_RETURN_UNDEF;
3762 cdev = statbuf.st_dev;
3763 cino = statbuf.st_ino;
3765 if (cdev != orig_cdev || cino != orig_cino) {
3766 Perl_croak(aTHX_ "Unstable directory path, "
3767 "current directory changed unexpectedly");