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a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
d48672a2
LW
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.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24
PP
23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
bd4080b3 27/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 28#ifdef I_UNISTD
8990e307
LW
29# include <unistd.h>
30#endif
31
a687059c
LW
32#ifdef I_VFORK
33# include <vfork.h>
34#endif
35
94b6baf5
AD
36/* Put this after #includes because fork and vfork prototypes may
37 conflict.
38*/
39#ifndef HAS_VFORK
40# define vfork fork
41#endif
42
fe14fcc3
LW
43#ifdef I_FCNTL
44# include <fcntl.h>
45#endif
46#ifdef I_SYS_FILE
47# include <sys/file.h>
48#endif
49
ff68c719
PP
50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH
54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ
62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS
69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW
75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
79 */
80
bd4080b3 81Malloc_t
4f63d024 82Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 83{
54aff467 84 dTHX;
bd4080b3 85 Malloc_t ptr;
55497cff 86#ifdef HAS_64K_LIMIT
62b28dd9 87 if (size > 0xffff) {
bf49b057 88 PerlIO_printf(Perl_error_log,
16cebae2 89 "Allocation too large: %lx\n", size) FLUSH;
54aff467 90 my_exit(1);
62b28dd9 91 }
55497cff 92#endif /* HAS_64K_LIMIT */
34de22dd
LW
93#ifdef DEBUGGING
94 if ((long)size < 0)
4f63d024 95 Perl_croak_nocontext("panic: malloc");
34de22dd 96#endif
6ad3d225 97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 98 PERL_ALLOC_CHECK(ptr);
97835f67 99 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW
100 if (ptr != Nullch)
101 return ptr;
3280af22 102 else if (PL_nomemok)
7c0587c8 103 return Nullch;
8d063cd8 104 else {
bf49b057 105 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 106 my_exit(1);
4e35701f 107 return Nullch;
8d063cd8
LW
108 }
109 /*NOTREACHED*/
110}
111
f2517201 112/* paranoid version of system's realloc() */
8d063cd8 113
bd4080b3 114Malloc_t
4f63d024 115Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 116{
54aff467 117 dTHX;
bd4080b3 118 Malloc_t ptr;
ecfc5424 119#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 120 Malloc_t PerlMem_realloc();
ecfc5424 121#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 122
55497cff 123#ifdef HAS_64K_LIMIT
5f05dabc 124 if (size > 0xffff) {
bf49b057 125 PerlIO_printf(Perl_error_log,
5f05dabc 126 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 127 my_exit(1);
5f05dabc 128 }
55497cff 129#endif /* HAS_64K_LIMIT */
7614df0c 130 if (!size) {
f2517201 131 safesysfree(where);
7614df0c
JD
132 return NULL;
133 }
134
378cc40b 135 if (!where)
f2517201 136 return safesysmalloc(size);
34de22dd
LW
137#ifdef DEBUGGING
138 if ((long)size < 0)
4f63d024 139 Perl_croak_nocontext("panic: realloc");
34de22dd 140#endif
7614df0c 141 ptr = PerlMem_realloc(where,size);
da927450 142 PERL_ALLOC_CHECK(ptr);
cd39f2b6 143
97835f67
JH
144 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
145 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 146
8d063cd8
LW
147 if (ptr != Nullch)
148 return ptr;
3280af22 149 else if (PL_nomemok)
7c0587c8 150 return Nullch;
8d063cd8 151 else {
bf49b057 152 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 153 my_exit(1);
4e35701f 154 return Nullch;
8d063cd8
LW
155 }
156 /*NOTREACHED*/
157}
158
f2517201 159/* safe version of system's free() */
8d063cd8 160
54310121 161Free_t
4f63d024 162Perl_safesysfree(Malloc_t where)
8d063cd8 163{
54aff467 164 dTHX;
97835f67 165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 166 if (where) {
de3bb511 167 /*SUPPRESS 701*/
6ad3d225 168 PerlMem_free(where);
378cc40b 169 }
8d063cd8
LW
170}
171
f2517201 172/* safe version of system's calloc() */
1050c9ca 173
bd4080b3 174Malloc_t
4f63d024 175Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 176{
54aff467 177 dTHX;
bd4080b3 178 Malloc_t ptr;
1050c9ca 179
55497cff 180#ifdef HAS_64K_LIMIT
5f05dabc 181 if (size * count > 0xffff) {
bf49b057 182 PerlIO_printf(Perl_error_log,
5f05dabc 183 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 184 my_exit(1);
5f05dabc 185 }
55497cff 186#endif /* HAS_64K_LIMIT */
1050c9ca
PP
187#ifdef DEBUGGING
188 if ((long)size < 0 || (long)count < 0)
4f63d024 189 Perl_croak_nocontext("panic: calloc");
1050c9ca 190#endif
0b7c1c42 191 size *= count;
6ad3d225 192 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 193 PERL_ALLOC_CHECK(ptr);
97835f67 194 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));
1050c9ca
PP
195 if (ptr != Nullch) {
196 memset((void*)ptr, 0, size);
197 return ptr;
198 }
3280af22 199 else if (PL_nomemok)
1050c9ca
PP
200 return Nullch;
201 else {
bf49b057 202 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 203 my_exit(1);
4e35701f 204 return Nullch;
1050c9ca
PP
205 }
206 /*NOTREACHED*/
207}
208
a687059c
LW
209#ifdef LEAKTEST
210
8c52afec
IZ
211struct mem_test_strut {
212 union {
213 long type;
214 char c[2];
215 } u;
216 long size;
217};
218
219# define ALIGN sizeof(struct mem_test_strut)
220
221# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
222# define typeof_chunk(ch) \
223 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
224# define set_typeof_chunk(ch,t) \
225 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
226#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
227 ? MAXYCOUNT - 1 \
228 : ( (size) > 40 \
229 ? ((size) - 1)/8 + 5 \
230 : ((size) - 1)/4))
8d063cd8 231
bd4080b3 232Malloc_t
4f63d024 233Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 234{
8c52afec 235 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 236
8c52afec
IZ
237 xcount[x] += size;
238 xycount[x][SIZE_TO_Y(size)]++;
239 set_typeof_chunk(where, x);
240 sizeof_chunk(where) = size;
241 return (Malloc_t)(where + ALIGN);
8d063cd8 242}
8d063cd8 243
bd4080b3 244Malloc_t
4f63d024 245Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 246{
8c52afec
IZ
247 char *where = (char*)wh;
248
249 if (!wh)
250 return safexmalloc(0,size);
251
252 {
253 MEM_SIZE old = sizeof_chunk(where - ALIGN);
254 int t = typeof_chunk(where - ALIGN);
255 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
256
257 xycount[t][SIZE_TO_Y(old)]--;
258 xycount[t][SIZE_TO_Y(size)]++;
259 xcount[t] += size - old;
260 sizeof_chunk(new) = size;
261 return (Malloc_t)(new + ALIGN);
262 }
a687059c
LW
263}
264
265void
4f63d024 266Perl_safexfree(Malloc_t wh)
a687059c 267{
79072805 268 I32 x;
8c52afec
IZ
269 char *where = (char*)wh;
270 MEM_SIZE size;
271
a687059c
LW
272 if (!where)
273 return;
274 where -= ALIGN;
8c52afec 275 size = sizeof_chunk(where);
a687059c 276 x = where[0] + 100 * where[1];
8c52afec
IZ
277 xcount[x] -= size;
278 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
279 safefree(where);
280}
281
bd4080b3 282Malloc_t
4f63d024 283Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 284{
8c52afec
IZ
285 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
286 xcount[x] += size;
287 xycount[x][SIZE_TO_Y(size)]++;
288 memset((void*)(where + ALIGN), 0, size * count);
289 set_typeof_chunk(where, x);
290 sizeof_chunk(where) = size;
291 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
292}
293
864dbfa3 294STATIC void
cea2e8a9 295S_xstat(pTHX_ int flag)
8d063cd8 296{
8c52afec
IZ
297 register I32 i, j, total = 0;
298 I32 subtot[MAXYCOUNT];
8d063cd8 299
8c52afec
IZ
300 for (j = 0; j < MAXYCOUNT; j++) {
301 subtot[j] = 0;
302 }
303
bf49b057 304 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);
a687059c 305 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
306 total += xcount[i];
307 for (j = 0; j < MAXYCOUNT; j++) {
308 subtot[j] += xycount[i][j];
309 }
310 if (flag == 0
311 ? xcount[i] /* Have something */
312 : (flag == 2
313 ? xcount[i] != lastxcount[i] /* Changed */
314 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 315 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 316 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 317 lastxcount[i] = xcount[i];
8c52afec
IZ
318 for (j = 0; j < MAXYCOUNT; j++) {
319 if ( flag == 0
320 ? xycount[i][j] /* Have something */
321 : (flag == 2
322 ? xycount[i][j] != lastxycount[i][j] /* Changed */
323 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 324 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ
325 flag == 2
326 ? xycount[i][j] - lastxycount[i][j]
327 : xycount[i][j]);
328 lastxycount[i][j] = xycount[i][j];
329 } else {
bf49b057 330 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ
331 }
332 }
bf49b057 333 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ
334 }
335 }
336 if (flag != 2) {
bf49b057 337 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ
338 for (j = 0; j < MAXYCOUNT; j++) {
339 if (subtot[j]) {
bf49b057 340 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 341 } else {
bf49b057 342 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 343 }
8d063cd8 344 }
bf49b057 345 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 346 }
8d063cd8 347}
a687059c
LW
348
349#endif /* LEAKTEST */
8d063cd8
LW
350
351/* copy a string up to some (non-backslashed) delimiter, if any */
352
353char *
864dbfa3 354Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 355{
fc36a67e
PP
356 register I32 tolen;
357 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
358 if (*from == '\\') {
359 if (from[1] == delim)
360 from++;
fc36a67e
PP
361 else {
362 if (to < toend)
363 *to++ = *from;
364 tolen++;
365 from++;
366 }
378cc40b 367 }
bedebaa5 368 else if (*from == delim)
8d063cd8 369 break;
fc36a67e
PP
370 if (to < toend)
371 *to++ = *from;
8d063cd8 372 }
bedebaa5
CS
373 if (to < toend)
374 *to = '\0';
fc36a67e 375 *retlen = tolen;
8d063cd8
LW
376 return from;
377}
378
379/* return ptr to little string in big string, NULL if not found */
378cc40b 380/* This routine was donated by Corey Satten. */
8d063cd8
LW
381
382char *
864dbfa3 383Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 384{
08105a92 385 register const char *s, *x;
79072805 386 register I32 first;
378cc40b 387
a687059c 388 if (!little)
08105a92 389 return (char*)big;
a687059c 390 first = *little++;
378cc40b 391 if (!first)
08105a92 392 return (char*)big;
378cc40b
LW
393 while (*big) {
394 if (*big++ != first)
395 continue;
396 for (x=big,s=little; *s; /**/ ) {
397 if (!*x)
398 return Nullch;
399 if (*s++ != *x++) {
400 s--;
401 break;
402 }
403 }
404 if (!*s)
08105a92 405 return (char*)(big-1);
378cc40b
LW
406 }
407 return Nullch;
408}
8d063cd8 409
a687059c
LW
410/* same as instr but allow embedded nulls */
411
412char *
864dbfa3 413Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 414{
08105a92 415 register const char *s, *x;
79072805 416 register I32 first = *little;
08105a92 417 register const char *littleend = lend;
378cc40b 418
a0d0e21e 419 if (!first && little >= littleend)
08105a92 420 return (char*)big;
de3bb511
LW
421 if (bigend - big < littleend - little)
422 return Nullch;
a687059c
LW
423 bigend -= littleend - little++;
424 while (big <= bigend) {
425 if (*big++ != first)
426 continue;
427 for (x=big,s=little; s < littleend; /**/ ) {
428 if (*s++ != *x++) {
429 s--;
430 break;
431 }
432 }
433 if (s >= littleend)
08105a92 434 return (char*)(big-1);
378cc40b 435 }
a687059c
LW
436 return Nullch;
437}
438
439/* reverse of the above--find last substring */
440
441char *
864dbfa3 442Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 443{
08105a92
GS
444 register const char *bigbeg;
445 register const char *s, *x;
79072805 446 register I32 first = *little;
08105a92 447 register const char *littleend = lend;
a687059c 448
a0d0e21e 449 if (!first && little >= littleend)
08105a92 450 return (char*)bigend;
a687059c
LW
451 bigbeg = big;
452 big = bigend - (littleend - little++);
453 while (big >= bigbeg) {
454 if (*big-- != first)
455 continue;
456 for (x=big+2,s=little; s < littleend; /**/ ) {
457 if (*s++ != *x++) {
458 s--;
459 break;
460 }
461 }
462 if (s >= littleend)
08105a92 463 return (char*)(big+1);
378cc40b 464 }
a687059c 465 return Nullch;
378cc40b 466}
a687059c 467
bbce6d69
PP
468/*
469 * Set up for a new ctype locale.
470 */
55497cff 471void
864dbfa3 472Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 473{
36477c24
PP
474#ifdef USE_LOCALE_CTYPE
475
bbce6d69 476 int i;
ef7eada9 477
bbce6d69
PP
478 for (i = 0; i < 256; i++) {
479 if (isUPPER_LC(i))
22c35a8c 480 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 481 else if (isLOWER_LC(i))
22c35a8c 482 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 483 else
22c35a8c 484 PL_fold_locale[i] = i;
bbce6d69 485 }
bbce6d69 486
36477c24
PP
487#endif /* USE_LOCALE_CTYPE */
488}
bbce6d69
PP
489
490/*
491 * Set up for a new collation locale.
492 */
493void
864dbfa3 494Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 495{
36477c24
PP
496#ifdef USE_LOCALE_COLLATE
497
bbce6d69 498 if (! newcoll) {
3280af22
NIS
499 if (PL_collation_name) {
500 ++PL_collation_ix;
501 Safefree(PL_collation_name);
502 PL_collation_name = NULL;
503 PL_collation_standard = TRUE;
504 PL_collxfrm_base = 0;
505 PL_collxfrm_mult = 2;
bbce6d69
PP
506 }
507 return;
508 }
509
3280af22
NIS
510 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
511 ++PL_collation_ix;
512 Safefree(PL_collation_name);
513 PL_collation_name = savepv(newcoll);
514 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 515
bbce6d69
PP
516 {
517 /* 2: at most so many chars ('a', 'b'). */
518 /* 50: surely no system expands a char more. */
519#define XFRMBUFSIZE (2 * 50)
520 char xbuf[XFRMBUFSIZE];
521 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
522 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
523 SSize_t mult = fb - fa;
524 if (mult < 1)
cea2e8a9 525 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
526 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
527 PL_collxfrm_mult = mult;
bbce6d69 528 }
bbce6d69 529 }
bbce6d69 530
36477c24
PP
531#endif /* USE_LOCALE_COLLATE */
532}
bbce6d69 533
097ee67d 534void
51371543 535Perl_set_numeric_radix(pTHX)
097ee67d
JH
536{
537#ifdef USE_LOCALE_NUMERIC
538# ifdef HAS_LOCALECONV
539 struct lconv* lc;
540
541 lc = localeconv();
542 if (lc && lc->decimal_point)
543 /* We assume that decimal separator aka the radix
544 * character is always a single character. If it
545 * ever is a string, this needs to be rethunk. */
546 PL_numeric_radix = *lc->decimal_point;
547 else
548 PL_numeric_radix = 0;
549# endif /* HAS_LOCALECONV */
097ee67d
JH
550#endif /* USE_LOCALE_NUMERIC */
551}
552
bbce6d69
PP
553/*
554 * Set up for a new numeric locale.
555 */
556void
864dbfa3 557Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 558{
36477c24
PP
559#ifdef USE_LOCALE_NUMERIC
560
bbce6d69 561 if (! newnum) {
3280af22
NIS
562 if (PL_numeric_name) {
563 Safefree(PL_numeric_name);
564 PL_numeric_name = NULL;
565 PL_numeric_standard = TRUE;
566 PL_numeric_local = TRUE;
bbce6d69
PP
567 }
568 return;
569 }
570
3280af22
NIS
571 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
572 Safefree(PL_numeric_name);
573 PL_numeric_name = savepv(newnum);
574 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
575 PL_numeric_local = TRUE;
51371543 576 set_numeric_radix();
bbce6d69 577 }
36477c24
PP
578
579#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
580}
581
582void
864dbfa3 583Perl_set_numeric_standard(pTHX)
bbce6d69 584{
5f05dabc
PP
585#ifdef USE_LOCALE_NUMERIC
586
3280af22 587 if (! PL_numeric_standard) {
bbce6d69 588 setlocale(LC_NUMERIC, "C");
3280af22
NIS
589 PL_numeric_standard = TRUE;
590 PL_numeric_local = FALSE;
bbce6d69 591 }
5f05dabc
PP
592
593#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
594}
595
596void
864dbfa3 597Perl_set_numeric_local(pTHX)
bbce6d69 598{
5f05dabc
PP
599#ifdef USE_LOCALE_NUMERIC
600
3280af22
NIS
601 if (! PL_numeric_local) {
602 setlocale(LC_NUMERIC, PL_numeric_name);
603 PL_numeric_standard = FALSE;
604 PL_numeric_local = TRUE;
51371543 605 set_numeric_radix();
bbce6d69 606 }
bbce6d69 607
36477c24 608#endif /* USE_LOCALE_NUMERIC */
5f05dabc 609}
36477c24 610
36477c24
PP
611/*
612 * Initialize locale awareness.
613 */
f0c5b223 614int
864dbfa3 615Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
616{
617 int ok = 1;
618 /* returns
619 * 1 = set ok or not applicable,
620 * 0 = fallback to C locale,
621 * -1 = fallback to C locale failed
622 */
bbce6d69 623
36477c24 624#ifdef USE_LOCALE
bbce6d69 625
36477c24 626#ifdef USE_LOCALE_CTYPE
bbce6d69 627 char *curctype = NULL;
36477c24
PP
628#endif /* USE_LOCALE_CTYPE */
629#ifdef USE_LOCALE_COLLATE
bbce6d69 630 char *curcoll = NULL;
36477c24
PP
631#endif /* USE_LOCALE_COLLATE */
632#ifdef USE_LOCALE_NUMERIC
bbce6d69 633 char *curnum = NULL;
36477c24 634#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
635#ifdef __GLIBC__
636 char *language = PerlEnv_getenv("LANGUAGE");
637#endif
76e3520e
GS
638 char *lc_all = PerlEnv_getenv("LC_ALL");
639 char *lang = PerlEnv_getenv("LANG");
bbce6d69 640 bool setlocale_failure = FALSE;
f0c5b223 641
02b32252
CS
642#ifdef LOCALE_ENVIRON_REQUIRED
643
644 /*
645 * Ultrix setlocale(..., "") fails if there are no environment
646 * variables from which to get a locale name.
647 */
648
649 bool done = FALSE;
650
651#ifdef LC_ALL
652 if (lang) {
653 if (setlocale(LC_ALL, ""))
654 done = TRUE;
655 else
656 setlocale_failure = TRUE;
657 }
0644c9cb 658 if (!setlocale_failure) {
02b32252 659#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
660 if (! (curctype =
661 setlocale(LC_CTYPE,
662 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
663 ? "" : Nullch)))
664 setlocale_failure = TRUE;
665#endif /* USE_LOCALE_CTYPE */
666#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
667 if (! (curcoll =
668 setlocale(LC_COLLATE,
669 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
670 ? "" : Nullch)))
671 setlocale_failure = TRUE;
672#endif /* USE_LOCALE_COLLATE */
673#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
674 if (! (curnum =
675 setlocale(LC_NUMERIC,
676 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
677 ? "" : Nullch)))
678 setlocale_failure = TRUE;
679#endif /* USE_LOCALE_NUMERIC */
680 }
681
0644c9cb 682#endif /* LC_ALL */
02b32252 683
0644c9cb 684#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 685
0644c9cb 686#ifdef LC_ALL
bbce6d69
PP
687 if (! setlocale(LC_ALL, ""))
688 setlocale_failure = TRUE;
0644c9cb 689#endif /* LC_ALL */
bbce6d69 690
0644c9cb 691 if (!setlocale_failure) {
36477c24 692#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
693 if (! (curctype = setlocale(LC_CTYPE, "")))
694 setlocale_failure = TRUE;
36477c24
PP
695#endif /* USE_LOCALE_CTYPE */
696#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
697 if (! (curcoll = setlocale(LC_COLLATE, "")))
698 setlocale_failure = TRUE;
36477c24
PP
699#endif /* USE_LOCALE_COLLATE */
700#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
701 if (! (curnum = setlocale(LC_NUMERIC, "")))
702 setlocale_failure = TRUE;
36477c24 703#endif /* USE_LOCALE_NUMERIC */
0644c9cb 704 }
02b32252 705
5f05dabc
PP
706 if (setlocale_failure) {
707 char *p;
708 bool locwarn = (printwarn > 1 ||
709 printwarn &&
76e3520e 710 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 711
5f05dabc
PP
712 if (locwarn) {
713#ifdef LC_ALL
714
bf49b057 715 PerlIO_printf(Perl_error_log,
5f05dabc
PP
716 "perl: warning: Setting locale failed.\n");
717
718#else /* !LC_ALL */
719
bf49b057 720 PerlIO_printf(Perl_error_log,
bbce6d69 721 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 722#ifdef USE_LOCALE_CTYPE
bbce6d69 723 if (! curctype)
bf49b057 724 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24
PP
725#endif /* USE_LOCALE_CTYPE */
726#ifdef USE_LOCALE_COLLATE
bbce6d69 727 if (! curcoll)
bf49b057 728 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24
PP
729#endif /* USE_LOCALE_COLLATE */
730#ifdef USE_LOCALE_NUMERIC
bbce6d69 731 if (! curnum)
bf49b057 732 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 733#endif /* USE_LOCALE_NUMERIC */
bf49b057 734 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 735
5f05dabc
PP
736#endif /* LC_ALL */
737
bf49b057 738 PerlIO_printf(Perl_error_log,
bbce6d69 739 "perl: warning: Please check that your locale settings:\n");
ef7eada9 740
3aeabbed 741#ifdef __GLIBC__
bf49b057 742 PerlIO_printf(Perl_error_log,
3aeabbed
JH
743 "\tLANGUAGE = %c%s%c,\n",
744 language ? '"' : '(',
745 language ? language : "unset",
746 language ? '"' : ')');
747#endif
748
bf49b057 749 PerlIO_printf(Perl_error_log,
bbce6d69
PP
750 "\tLC_ALL = %c%s%c,\n",
751 lc_all ? '"' : '(',
752 lc_all ? lc_all : "unset",
753 lc_all ? '"' : ')');
5f05dabc
PP
754
755 {
756 char **e;
757 for (e = environ; *e; e++) {
758 if (strnEQ(*e, "LC_", 3)
759 && strnNE(*e, "LC_ALL=", 7)
760 && (p = strchr(*e, '=')))
bf49b057 761 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 762 (int)(p - *e), *e, p + 1);
5f05dabc
PP
763 }
764 }
765
bf49b057 766 PerlIO_printf(Perl_error_log,
bbce6d69 767 "\tLANG = %c%s%c\n",
5f05dabc 768 lang ? '"' : '(',
bbce6d69
PP
769 lang ? lang : "unset",
770 lang ? '"' : ')');
ef7eada9 771
bf49b057 772 PerlIO_printf(Perl_error_log,
bbce6d69 773 " are supported and installed on your system.\n");
5f05dabc 774 }
ef7eada9 775
5f05dabc
PP
776#ifdef LC_ALL
777
778 if (setlocale(LC_ALL, "C")) {
779 if (locwarn)
bf49b057 780 PerlIO_printf(Perl_error_log,
5f05dabc 781 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 782 ok = 0;
ef7eada9 783 }
5f05dabc
PP
784 else {
785 if (locwarn)
bf49b057 786 PerlIO_printf(Perl_error_log,
5f05dabc
PP
787 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
788 ok = -1;
789 }
bbce6d69 790
5f05dabc
PP
791#else /* ! LC_ALL */
792
793 if (0
36477c24 794#ifdef USE_LOCALE_CTYPE
5f05dabc 795 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
796#endif /* USE_LOCALE_CTYPE */
797#ifdef USE_LOCALE_COLLATE
5f05dabc 798 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
799#endif /* USE_LOCALE_COLLATE */
800#ifdef USE_LOCALE_NUMERIC
5f05dabc 801 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 802#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
803 )
804 {
805 if (locwarn)
bf49b057 806 PerlIO_printf(Perl_error_log,
5f05dabc
PP
807 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
808 ok = -1;
bbce6d69 809 }
5f05dabc 810
bbce6d69 811#endif /* ! LC_ALL */
5f05dabc
PP
812
813#ifdef USE_LOCALE_CTYPE
814 curctype = setlocale(LC_CTYPE, Nullch);
815#endif /* USE_LOCALE_CTYPE */
816#ifdef USE_LOCALE_COLLATE
817 curcoll = setlocale(LC_COLLATE, Nullch);
818#endif /* USE_LOCALE_COLLATE */
819#ifdef USE_LOCALE_NUMERIC
820 curnum = setlocale(LC_NUMERIC, Nullch);
821#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
822 }
823
36477c24 824#ifdef USE_LOCALE_CTYPE
864dbfa3 825 new_ctype(curctype);
36477c24 826#endif /* USE_LOCALE_CTYPE */
bbce6d69 827
36477c24 828#ifdef USE_LOCALE_COLLATE
864dbfa3 829 new_collate(curcoll);
36477c24 830#endif /* USE_LOCALE_COLLATE */
bbce6d69 831
36477c24 832#ifdef USE_LOCALE_NUMERIC
864dbfa3 833 new_numeric(curnum);
36477c24 834#endif /* USE_LOCALE_NUMERIC */
ef7eada9 835
36477c24 836#endif /* USE_LOCALE */
ef7eada9 837
f0c5b223
TB
838 return ok;
839}
840
bbce6d69
PP
841/* Backwards compatibility. */
842int
864dbfa3 843Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 844{
864dbfa3 845 return init_i18nl10n(printwarn);
bbce6d69 846}
ef7eada9 847
36477c24 848#ifdef USE_LOCALE_COLLATE
ef7eada9 849
bbce6d69
PP
850/*
851 * mem_collxfrm() is a bit like strxfrm() but with two important
852 * differences. First, it handles embedded NULs. Second, it allocates
853 * a bit more memory than needed for the transformed data itself.
854 * The real transformed data begins at offset sizeof(collationix).
855 * Please see sv_collxfrm() to see how this is used.
856 */
857char *
864dbfa3 858Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
859{
860 char *xbuf;
76e3520e 861 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
862
863 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
864 /* the +1 is for the terminating NUL. */
865
3280af22 866 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 867 New(171, xbuf, xAlloc, char);
bbce6d69
PP
868 if (! xbuf)
869 goto bad;
870
3280af22
NIS
871 *(U32*)xbuf = PL_collation_ix;
872 xout = sizeof(PL_collation_ix);
bbce6d69
PP
873 for (xin = 0; xin < len; ) {
874 SSize_t xused;
875
876 for (;;) {
76e3520e 877 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
878 if (xused == -1)
879 goto bad;
76e3520e 880 if (xused < xAlloc - xout)
bbce6d69 881 break;
76e3520e
GS
882 xAlloc = (2 * xAlloc) + 1;
883 Renew(xbuf, xAlloc, char);
bbce6d69
PP
884 if (! xbuf)
885 goto bad;
886 }
ef7eada9 887
bbce6d69
PP
888 xin += strlen(s + xin) + 1;
889 xout += xused;
890
891 /* Embedded NULs are understood but silently skipped
892 * because they make no sense in locale collation. */
893 }
ef7eada9 894
bbce6d69 895 xbuf[xout] = '\0';
3280af22 896 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
897 return xbuf;
898
899 bad:
900 Safefree(xbuf);
901 *xlen = 0;
902 return NULL;
ef7eada9
JH
903}
904
36477c24 905#endif /* USE_LOCALE_COLLATE */
bbce6d69 906
cf93c79d
IZ
907#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
908
909/* As a space optimization, we do not compile tables for strings of length
910 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
911 special-cased in fbm_instr().
912
913 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
914
378cc40b 915void
7506f9c3 916Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 917{
942e002e
GS
918 register U8 *s;
919 register U8 *table;
79072805 920 register U32 i;
0b71040e 921 STRLEN len;
79072805
LW
922 I32 rarest = 0;
923 U32 frequency = 256;
924
cf93c79d
IZ
925 if (flags & FBMcf_TAIL)
926 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 927 s = (U8*)SvPV_force(sv, len);
07f14f54 928 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
929 if (len == 0) /* TAIL might be on on a zero-length string. */
930 return;
02128f11 931 if (len > 2) {
7506f9c3 932 U8 mlen;
cf93c79d
IZ
933 unsigned char *sb;
934
7506f9c3 935 if (len > 255)
cf93c79d 936 mlen = 255;
7506f9c3
GS
937 else
938 mlen = (U8)len;
939 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 940 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS
941 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
942 memset((void*)table, mlen, 256);
943 table[-1] = (U8)flags;
02128f11 944 i = 0;
7506f9c3 945 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ
946 while (s >= sb) {
947 if (table[*s] == mlen)
7506f9c3 948 table[*s] = (U8)i;
cf93c79d
IZ
949 s--, i++;
950 }
378cc40b 951 }
bbce6d69 952 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 953 SvVALID_on(sv);
378cc40b 954
463ee0b2 955 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 956 for (i = 0; i < len; i++) {
22c35a8c 957 if (PL_freq[s[i]] < frequency) {
bbce6d69 958 rarest = i;
22c35a8c 959 frequency = PL_freq[s[i]];
378cc40b
LW
960 }
961 }
79072805
LW
962 BmRARE(sv) = s[rarest];
963 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
964 BmUSEFUL(sv) = 100; /* Initial value */
965 if (flags & FBMcf_TAIL)
966 SvTAIL_on(sv);
7506f9c3
GS
967 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
968 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
969}
970
cf93c79d
IZ
971/* If SvTAIL(littlestr), it has a fake '\n' at end. */
972/* If SvTAIL is actually due to \Z or \z, this gives false positives
973 if multiline */
974
378cc40b 975char *
864dbfa3 976Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 977{
a687059c 978 register unsigned char *s;
cf93c79d
IZ
979 STRLEN l;
980 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
981 register STRLEN littlelen = l;
982 register I32 multiline = flags & FBMrf_MULTILINE;
983
984 if (bigend - big < littlelen) {
985 check_tail:
986 if ( SvTAIL(littlestr)
987 && (bigend - big == littlelen - 1)
988 && (littlelen == 1
989 || *big == *little && memEQ(big, little, littlelen - 1)))
990 return (char*)big;
991 return Nullch;
992 }
378cc40b 993
cf93c79d
IZ
994 if (littlelen <= 2) { /* Special-cased */
995 register char c;
996
997 if (littlelen == 1) {
998 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
999 /* Know that bigend != big. */
1000 if (bigend[-1] == '\n')
1001 return (char *)(bigend - 1);
1002 return (char *) bigend;
1003 }
1004 s = big;
1005 while (s < bigend) {
1006 if (*s == *little)
1007 return (char *)s;
1008 s++;
1009 }
1010 if (SvTAIL(littlestr))
1011 return (char *) bigend;
1012 return Nullch;
1013 }
1014 if (!littlelen)
1015 return (char*)big; /* Cannot be SvTAIL! */
1016
1017 /* littlelen is 2 */
1018 if (SvTAIL(littlestr) && !multiline) {
1019 if (bigend[-1] == '\n' && bigend[-2] == *little)
1020 return (char*)bigend - 2;
1021 if (bigend[-1] == *little)
1022 return (char*)bigend - 1;
1023 return Nullch;
1024 }
1025 {
1026 /* This should be better than FBM if c1 == c2, and almost
1027 as good otherwise: maybe better since we do less indirection.
1028 And we save a lot of memory by caching no table. */
1029 register unsigned char c1 = little[0];
1030 register unsigned char c2 = little[1];
1031
1032 s = big + 1;
1033 bigend--;
1034 if (c1 != c2) {
1035 while (s <= bigend) {
1036 if (s[0] == c2) {
1037 if (s[-1] == c1)
1038 return (char*)s - 1;
1039 s += 2;
1040 continue;
3fe6f2dc 1041 }
cf93c79d
IZ
1042 next_chars:
1043 if (s[0] == c1) {
1044 if (s == bigend)
1045 goto check_1char_anchor;
1046 if (s[1] == c2)
1047 return (char*)s;
1048 else {
1049 s++;
1050 goto next_chars;
1051 }
1052 }
1053 else
1054 s += 2;
1055 }
1056 goto check_1char_anchor;
1057 }
1058 /* Now c1 == c2 */
1059 while (s <= bigend) {
1060 if (s[0] == c1) {
1061 if (s[-1] == c1)
1062 return (char*)s - 1;
1063 if (s == bigend)
1064 goto check_1char_anchor;
1065 if (s[1] == c1)
1066 return (char*)s;
1067 s += 3;
02128f11 1068 }
c277df42 1069 else
cf93c79d 1070 s += 2;
c277df42 1071 }
c277df42 1072 }
cf93c79d
IZ
1073 check_1char_anchor: /* One char and anchor! */
1074 if (SvTAIL(littlestr) && (*bigend == *little))
1075 return (char *)bigend; /* bigend is already decremented. */
1076 return Nullch;
d48672a2 1077 }
cf93c79d 1078 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1079 s = bigend - littlelen;
7506f9c3 1080 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ
1081 /* Automatically of length > 2 */
1082 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1083 {
bbce6d69 1084 return (char*)s; /* how sweet it is */
7506f9c3
GS
1085 }
1086 if (s[1] == *little
1087 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1088 {
cf93c79d 1089 return (char*)s + 1; /* how sweet it is */
7506f9c3 1090 }
02128f11
IZ
1091 return Nullch;
1092 }
cf93c79d
IZ
1093 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1094 char *b = ninstr((char*)big,(char*)bigend,
1095 (char*)little, (char*)little + littlelen);
1096
1097 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1098 /* Chop \n from littlestr: */
1099 s = bigend - littlelen + 1;
7506f9c3
GS
1100 if (*s == *little
1101 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1102 {
3fe6f2dc 1103 return (char*)s;
7506f9c3 1104 }
cf93c79d 1105 return Nullch;
a687059c 1106 }
cf93c79d 1107 return b;
a687059c 1108 }
cf93c79d
IZ
1109
1110 { /* Do actual FBM. */
1111 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1112 register unsigned char *oldlittle;
1113
1114 if (littlelen > bigend - big)
1115 return Nullch;
1116 --littlelen; /* Last char found by table lookup */
1117
1118 s = big + littlelen;
1119 little += littlelen; /* last char */
1120 oldlittle = little;
1121 if (s < bigend) {
1122 register I32 tmp;
1123
1124 top2:
1125 /*SUPPRESS 560*/
7506f9c3 1126 if ((tmp = table[*s])) {
62b28dd9 1127#ifdef POINTERRIGOR
cf93c79d
IZ
1128 if (bigend - s > tmp) {
1129 s += tmp;
1130 goto top2;
1131 }
bbce6d69 1132 s += tmp;
62b28dd9 1133#else
cf93c79d 1134 if ((s += tmp) < bigend)
62b28dd9 1135 goto top2;
cf93c79d
IZ
1136#endif
1137 goto check_end;
1138 }
1139 else { /* less expensive than calling strncmp() */
1140 register unsigned char *olds = s;
1141
1142 tmp = littlelen;
1143
1144 while (tmp--) {
1145 if (*--s == *--little)
1146 continue;
1147 differ:
1148 s = olds + 1; /* here we pay the price for failure */
1149 little = oldlittle;
1150 if (s < bigend) /* fake up continue to outer loop */
1151 goto top2;
1152 goto check_end;
1153 }
1154 return (char *)s;
a687059c 1155 }
378cc40b 1156 }
cf93c79d
IZ
1157 check_end:
1158 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1159 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1160 return (char*)bigend - littlelen;
1161 return Nullch;
378cc40b 1162 }
378cc40b
LW
1163}
1164
c277df42
IZ
1165/* start_shift, end_shift are positive quantities which give offsets
1166 of ends of some substring of bigstr.
1167 If `last' we want the last occurence.
1168 old_posp is the way of communication between consequent calls if
1169 the next call needs to find the .
1170 The initial *old_posp should be -1.
cf93c79d
IZ
1171
1172 Note that we take into account SvTAIL, so one can get extra
1173 optimizations if _ALL flag is set.
c277df42
IZ
1174 */
1175
cf93c79d
IZ
1176/* If SvTAIL is actually due to \Z or \z, this gives false positives
1177 if PL_multiline. In fact if !PL_multiline the autoritative answer
1178 is not supported yet. */
1179
378cc40b 1180char *
864dbfa3 1181Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1182{
5c0ca799 1183 dTHR;
a687059c
LW
1184 register unsigned char *s, *x;
1185 register unsigned char *big;
79072805
LW
1186 register I32 pos;
1187 register I32 previous;
1188 register I32 first;
a687059c 1189 register unsigned char *little;
c277df42 1190 register I32 stop_pos;
a687059c 1191 register unsigned char *littleend;
c277df42 1192 I32 found = 0;
378cc40b 1193
c277df42 1194 if (*old_posp == -1
3280af22 1195 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1196 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1197 cant_find:
1198 if ( BmRARE(littlestr) == '\n'
1199 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1200 little = (unsigned char *)(SvPVX(littlestr));
1201 littleend = little + SvCUR(littlestr);
1202 first = *little++;
1203 goto check_tail;
1204 }
378cc40b 1205 return Nullch;
cf93c79d
IZ
1206 }
1207
463ee0b2 1208 little = (unsigned char *)(SvPVX(littlestr));
79072805 1209 littleend = little + SvCUR(littlestr);
378cc40b 1210 first = *little++;
c277df42 1211 /* The value of pos we can start at: */
79072805 1212 previous = BmPREVIOUS(littlestr);
463ee0b2 1213 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1214 /* The value of pos we can stop at: */
1215 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1216 if (previous + start_shift > stop_pos) {
1217 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1218 goto check_tail;
1219 return Nullch;
1220 }
c277df42 1221 while (pos < previous + start_shift) {
3280af22 1222 if (!(pos += PL_screamnext[pos]))
cf93c79d 1223 goto cant_find;
378cc40b 1224 }
de3bb511 1225#ifdef POINTERRIGOR
bbce6d69 1226 do {
ef64f398 1227 if (pos >= stop_pos) break;
bbce6d69
PP
1228 if (big[pos-previous] != first)
1229 continue;
1230 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1231 if (*s++ != *x++) {
1232 s--;
1233 break;
de3bb511 1234 }
bbce6d69 1235 }
c277df42
IZ
1236 if (s == littleend) {
1237 *old_posp = pos;
1238 if (!last) return (char *)(big+pos-previous);
1239 found = 1;
1240 }
6b88bc9c 1241 } while ( pos += PL_screamnext[pos] );
c277df42 1242 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1243#else /* !POINTERRIGOR */
1244 big -= previous;
bbce6d69 1245 do {
ef64f398 1246 if (pos >= stop_pos) break;
bbce6d69
PP
1247 if (big[pos] != first)
1248 continue;
1249 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1250 if (*s++ != *x++) {
1251 s--;
1252 break;
378cc40b 1253 }
bbce6d69 1254 }
c277df42
IZ
1255 if (s == littleend) {
1256 *old_posp = pos;
1257 if (!last) return (char *)(big+pos);
1258 found = 1;
1259 }
3280af22 1260 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1261 if (last && found)
1262 return (char *)(big+(*old_posp));
de3bb511 1263#endif /* POINTERRIGOR */
cf93c79d
IZ
1264 check_tail:
1265 if (!SvTAIL(littlestr) || (end_shift > 0))
1266 return Nullch;
1267 /* Ignore the trailing "\n". This code is not microoptimized */
1268 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1269 stop_pos = littleend - little; /* Actual littlestr len */
1270 if (stop_pos == 0)
1271 return (char*)big;
1272 big -= stop_pos;
1273 if (*big == first
1274 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1275 return (char*)big;
1276 return Nullch;
8d063cd8
LW
1277}
1278
79072805 1279I32
864dbfa3 1280Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1281{
bbce6d69
PP
1282 register U8 *a = (U8 *)s1;
1283 register U8 *b = (U8 *)s2;
79072805 1284 while (len--) {
22c35a8c 1285 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1286 return 1;
1287 a++,b++;
1288 }
1289 return 0;
1290}
1291
1292I32
864dbfa3 1293Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1294{
1295 register U8 *a = (U8 *)s1;
1296 register U8 *b = (U8 *)s2;
1297 while (len--) {
22c35a8c 1298 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1299 return 1;
1300 a++,b++;
79072805
LW
1301 }
1302 return 0;
1303}
1304
8d063cd8
LW
1305/* copy a string to a safe spot */
1306
1307char *
864dbfa3 1308Perl_savepv(pTHX_ const char *sv)
8d063cd8 1309{
a687059c 1310 register char *newaddr;
8d063cd8 1311
79072805
LW
1312 New(902,newaddr,strlen(sv)+1,char);
1313 (void)strcpy(newaddr,sv);
8d063cd8
LW
1314 return newaddr;
1315}
1316
a687059c
LW
1317/* same thing but with a known length */
1318
1319char *
864dbfa3 1320Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1321{
1322 register char *newaddr;
1323
1324 New(903,newaddr,len+1,char);
79072805 1325 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1326 newaddr[len] = '\0'; /* is now */
1327 return newaddr;
1328}
1329
cea2e8a9 1330/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1331
76e3520e 1332STATIC SV *
cea2e8a9 1333S_mess_alloc(pTHX)
fc36a67e 1334{
e72dc28c 1335 dTHR;
fc36a67e
PP
1336 SV *sv;
1337 XPVMG *any;
1338
e72dc28c
GS
1339 if (!PL_dirty)
1340 return sv_2mortal(newSVpvn("",0));
1341
0372dbb6
GS
1342 if (PL_mess_sv)
1343 return PL_mess_sv;
1344
fc36a67e
PP
1345 /* Create as PVMG now, to avoid any upgrading later */
1346 New(905, sv, 1, SV);
1347 Newz(905, any, 1, XPVMG);
1348 SvFLAGS(sv) = SVt_PVMG;
1349 SvANY(sv) = (void*)any;
1350 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1351 PL_mess_sv = sv;
fc36a67e
PP
1352 return sv;
1353}
1354
c5be433b 1355#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1356char *
1357Perl_form_nocontext(const char* pat, ...)
1358{
1359 dTHX;
c5be433b 1360 char *retval;
cea2e8a9
GS
1361 va_list args;
1362 va_start(args, pat);
c5be433b 1363 retval = vform(pat, &args);
cea2e8a9 1364 va_end(args);
c5be433b 1365 return retval;
cea2e8a9 1366}
c5be433b 1367#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1368
8990e307 1369char *
864dbfa3 1370Perl_form(pTHX_ const char* pat, ...)
8990e307 1371{
c5be433b 1372 char *retval;
46fc3d4c 1373 va_list args;
46fc3d4c 1374 va_start(args, pat);
c5be433b 1375 retval = vform(pat, &args);
46fc3d4c 1376 va_end(args);
c5be433b
GS
1377 return retval;
1378}
1379
1380char *
1381Perl_vform(pTHX_ const char *pat, va_list *args)
1382{
1383 SV *sv = mess_alloc();
1384 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1385 return SvPVX(sv);
46fc3d4c 1386}
a687059c 1387
5a844595
GS
1388#if defined(PERL_IMPLICIT_CONTEXT)
1389SV *
1390Perl_mess_nocontext(const char *pat, ...)
1391{
1392 dTHX;
1393 SV *retval;
1394 va_list args;
1395 va_start(args, pat);
1396 retval = vmess(pat, &args);
1397 va_end(args);
1398 return retval;
1399}
1400#endif /* PERL_IMPLICIT_CONTEXT */
1401
06bf62c7 1402SV *
5a844595
GS
1403Perl_mess(pTHX_ const char *pat, ...)
1404{
1405 SV *retval;
1406 va_list args;
1407 va_start(args, pat);
1408 retval = vmess(pat, &args);
1409 va_end(args);
1410 return retval;
1411}
1412
1413SV *
1414Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1415{
e72dc28c 1416 SV *sv = mess_alloc();
46fc3d4c
PP
1417 static char dgd[] = " during global destruction.\n";
1418
fc36a67e 1419 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1420 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1421 dTHR;
57843af0 1422 if (CopLINE(PL_curcop))
ed094faf
GS
1423 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1424 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS
1425 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1426 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1427 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1428 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH
1429 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1430 line_mode ? "line" : "chunk",
1431 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1432 }
9efbc0eb 1433#ifdef USE_THREADS
e8e6f333
GS
1434 if (thr->tid)
1435 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1436#endif
515f54a1 1437 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1438 }
06bf62c7 1439 return sv;
a687059c
LW
1440}
1441
c5be433b
GS
1442OP *
1443Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1444{
5dc0d613 1445 dTHR;
36477c24 1446 char *message;
3280af22 1447 int was_in_eval = PL_in_eval;
36477c24
PP
1448 HV *stash;
1449 GV *gv;
1450 CV *cv;
06bf62c7
GS
1451 SV *msv;
1452 STRLEN msglen;
36477c24 1453
bf49b057 1454 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1455 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1456 thr, PL_curstack, PL_mainstack));
36477c24 1457
06bf62c7 1458 if (pat) {
5a844595
GS
1459 msv = vmess(pat, args);
1460 if (PL_errors && SvCUR(PL_errors)) {
1461 sv_catsv(PL_errors, msv);
1462 message = SvPV(PL_errors, msglen);
1463 SvCUR_set(PL_errors, 0);
1464 }
1465 else
1466 message = SvPV(msv,msglen);
06bf62c7
GS
1467 }
1468 else {
1469 message = Nullch;
1470 }
36477c24 1471
bf49b057 1472 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1473 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1474 thr, message, PL_diehook));
3280af22 1475 if (PL_diehook) {
cea2e8a9 1476 /* sv_2cv might call Perl_croak() */
3280af22 1477 SV *olddiehook = PL_diehook;
1738f5c4 1478 ENTER;
3280af22
NIS
1479 SAVESPTR(PL_diehook);
1480 PL_diehook = Nullsv;
1738f5c4
CS
1481 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1482 LEAVE;
1483 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1484 dSP;
774d564b
PP
1485 SV *msg;
1486
1487 ENTER;
79cb57f6 1488 if (message) {
06bf62c7 1489 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1490 SvREADONLY_on(msg);
1491 SAVEFREESV(msg);
1492 }
1493 else {
1494 msg = ERRSV;
1495 }
1738f5c4 1496
e788e7d3 1497 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1498 PUSHMARK(SP);
1738f5c4
CS
1499 XPUSHs(msg);
1500 PUTBACK;
0cdb2077 1501 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1502 POPSTACK;
774d564b 1503 LEAVE;
1738f5c4 1504 }
36477c24
PP
1505 }
1506
06bf62c7 1507 PL_restartop = die_where(message, msglen);
bf49b057 1508 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1509 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1510 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1511 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1512 JMPENV_JUMP(3);
3280af22 1513 return PL_restartop;
36477c24
PP
1514}
1515
c5be433b 1516#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1517OP *
1518Perl_die_nocontext(const char* pat, ...)
a687059c 1519{
cea2e8a9
GS
1520 dTHX;
1521 OP *o;
a687059c 1522 va_list args;
cea2e8a9 1523 va_start(args, pat);
c5be433b 1524 o = vdie(pat, &args);
cea2e8a9
GS
1525 va_end(args);
1526 return o;
1527}
c5be433b 1528#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1529
1530OP *
1531Perl_die(pTHX_ const char* pat, ...)
1532{
1533 OP *o;
1534 va_list args;
1535 va_start(args, pat);
c5be433b 1536 o = vdie(pat, &args);
cea2e8a9
GS
1537 va_end(args);
1538 return o;
1539}
1540
c5be433b
GS
1541void
1542Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS
1543{
1544 dTHR;
de3bb511 1545 char *message;
748a9306
LW
1546 HV *stash;
1547 GV *gv;
1548 CV *cv;
06bf62c7
GS
1549 SV *msv;
1550 STRLEN msglen;
a687059c 1551
5a844595
GS
1552 msv = vmess(pat, args);
1553 if (PL_errors && SvCUR(PL_errors)) {
1554 sv_catsv(PL_errors, msv);
1555 message = SvPV(PL_errors, msglen);
1556 SvCUR_set(PL_errors, 0);
1557 }
1558 else
1559 message = SvPV(msv,msglen);
1560
b900a521
JH
1561 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1562 PTR2UV(thr), message));
5a844595 1563
3280af22 1564 if (PL_diehook) {
cea2e8a9 1565 /* sv_2cv might call Perl_croak() */
3280af22 1566 SV *olddiehook = PL_diehook;
1738f5c4 1567 ENTER;
3280af22
NIS
1568 SAVESPTR(PL_diehook);
1569 PL_diehook = Nullsv;
20cec16a 1570 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1571 LEAVE;
1572 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1573 dSP;
774d564b
PP
1574 SV *msg;
1575
1576 ENTER;
06bf62c7 1577 msg = newSVpvn(message, msglen);
774d564b
PP
1578 SvREADONLY_on(msg);
1579 SAVEFREESV(msg);
20cec16a 1580
e788e7d3 1581 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1582 PUSHMARK(SP);
1738f5c4 1583 XPUSHs(msg);
20cec16a 1584 PUTBACK;
864dbfa3 1585 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1586 POPSTACK;
774d564b 1587 LEAVE;
20cec16a 1588 }
748a9306 1589 }
3280af22 1590 if (PL_in_eval) {
06bf62c7 1591 PL_restartop = die_where(message, msglen);
6224f72b 1592 JMPENV_JUMP(3);
a0d0e21e 1593 }
d175a3f0
GS
1594 {
1595#ifdef USE_SFIO
1596 /* SFIO can really mess with your errno */
1597 int e = errno;
1598#endif
bf49b057
GS
1599 PerlIO *serr = Perl_error_log;
1600
1601 PerlIO_write(serr, message, msglen);
1602 (void)PerlIO_flush(serr);
d175a3f0
GS
1603#ifdef USE_SFIO
1604 errno = e;
1605#endif
1606 }
f86702cc 1607 my_failure_exit();
a687059c
LW
1608}
1609
c5be433b 1610#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1611void
cea2e8a9 1612Perl_croak_nocontext(const char *pat, ...)
a687059c 1613{
cea2e8a9 1614 dTHX;
a687059c 1615 va_list args;
cea2e8a9 1616 va_start(args, pat);
c5be433b 1617 vcroak(pat, &args);
cea2e8a9
GS
1618 /* NOTREACHED */
1619 va_end(args);
1620}
1621#endif /* PERL_IMPLICIT_CONTEXT */
1622
1623void
1624Perl_croak(pTHX_ const char *pat, ...)
1625{
1626 va_list args;
1627 va_start(args, pat);
c5be433b 1628 vcroak(pat, &args);
cea2e8a9
GS
1629 /* NOTREACHED */
1630 va_end(args);
1631}
1632
c5be433b
GS
1633void
1634Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1635{
de3bb511 1636 char *message;
748a9306
LW
1637 HV *stash;
1638 GV *gv;
1639 CV *cv;
06bf62c7
GS
1640 SV *msv;
1641 STRLEN msglen;
a687059c 1642
5a844595 1643 msv = vmess(pat, args);
06bf62c7 1644 message = SvPV(msv, msglen);
a687059c 1645
3280af22 1646 if (PL_warnhook) {
cea2e8a9 1647 /* sv_2cv might call Perl_warn() */
11343788 1648 dTHR;
3280af22 1649 SV *oldwarnhook = PL_warnhook;
1738f5c4 1650 ENTER;
3280af22
NIS
1651 SAVESPTR(PL_warnhook);
1652 PL_warnhook = Nullsv;
20cec16a 1653 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1654 LEAVE;
1655 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1656 dSP;
774d564b
PP
1657 SV *msg;
1658
1659 ENTER;
06bf62c7 1660 msg = newSVpvn(message, msglen);
774d564b
PP
1661 SvREADONLY_on(msg);
1662 SAVEFREESV(msg);
1663
e788e7d3 1664 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1665 PUSHMARK(SP);
774d564b 1666 XPUSHs(msg);
20cec16a 1667 PUTBACK;
864dbfa3 1668 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1669 POPSTACK;
774d564b 1670 LEAVE;
20cec16a
PP
1671 return;
1672 }
748a9306 1673 }
bf49b057
GS
1674 {
1675 PerlIO *serr = Perl_error_log;
1676
1677 PerlIO_write(serr, message, msglen);
a687059c 1678#ifdef LEAKTEST
bf49b057
GS
1679 DEBUG_L(*message == '!'
1680 ? (xstat(message[1]=='!'
1681 ? (message[2]=='!' ? 2 : 1)
1682 : 0)
1683 , 0)
1684 : 0);
a687059c 1685#endif
bf49b057
GS
1686 (void)PerlIO_flush(serr);
1687 }
a687059c 1688}
8d063cd8 1689
c5be433b 1690#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1691void
1692Perl_warn_nocontext(const char *pat, ...)
1693{
1694 dTHX;
1695 va_list args;
1696 va_start(args, pat);
c5be433b 1697 vwarn(pat, &args);
cea2e8a9
GS
1698 va_end(args);
1699}
1700#endif /* PERL_IMPLICIT_CONTEXT */
1701
1702void
1703Perl_warn(pTHX_ const char *pat, ...)
1704{
1705 va_list args;
1706 va_start(args, pat);
c5be433b 1707 vwarn(pat, &args);
cea2e8a9
GS
1708 va_end(args);
1709}
1710
c5be433b
GS
1711#if defined(PERL_IMPLICIT_CONTEXT)
1712void
1713Perl_warner_nocontext(U32 err, const char *pat, ...)
1714{
1715 dTHX;
1716 va_list args;
1717 va_start(args, pat);
1718 vwarner(err, pat, &args);
1719 va_end(args);
1720}
1721#endif /* PERL_IMPLICIT_CONTEXT */
1722
599cee73 1723void
864dbfa3 1724Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1725{
1726 va_list args;
c5be433b
GS
1727 va_start(args, pat);
1728 vwarner(err, pat, &args);
1729 va_end(args);
1730}
1731
1732void
1733Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1734{
1735 dTHR;
599cee73
PM
1736 char *message;
1737 HV *stash;
1738 GV *gv;
1739 CV *cv;
06bf62c7
GS
1740 SV *msv;
1741 STRLEN msglen;
599cee73 1742
5a844595 1743 msv = vmess(pat, args);
06bf62c7 1744 message = SvPV(msv, msglen);
599cee73
PM
1745
1746 if (ckDEAD(err)) {
1747#ifdef USE_THREADS
b900a521 1748 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM
1749#endif /* USE_THREADS */
1750 if (PL_diehook) {
cea2e8a9 1751 /* sv_2cv might call Perl_croak() */
599cee73
PM
1752 SV *olddiehook = PL_diehook;
1753 ENTER;
1754 SAVESPTR(PL_diehook);
1755 PL_diehook = Nullsv;
1756 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1757 LEAVE;
1758 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1759 dSP;
1760 SV *msg;
1761
1762 ENTER;
06bf62c7 1763 msg = newSVpvn(message, msglen);
599cee73
PM
1764 SvREADONLY_on(msg);
1765 SAVEFREESV(msg);
1766
1767 PUSHMARK(sp);
1768 XPUSHs(msg);
1769 PUTBACK;
864dbfa3 1770 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1771
1772 LEAVE;
1773 }
1774 }
1775 if (PL_in_eval) {
06bf62c7 1776 PL_restartop = die_where(message, msglen);
599cee73
PM
1777 JMPENV_JUMP(3);
1778 }
bf49b057
GS
1779 {
1780 PerlIO *serr = Perl_error_log;
1781 PerlIO_write(serr, message, msglen);
1782 (void)PerlIO_flush(serr);
1783 }
599cee73
PM
1784 my_failure_exit();
1785
1786 }
1787 else {
1788 if (PL_warnhook) {
cea2e8a9 1789 /* sv_2cv might call Perl_warn() */
599cee73
PM
1790 dTHR;
1791 SV *oldwarnhook = PL_warnhook;
1792 ENTER;
1793 SAVESPTR(PL_warnhook);
1794 PL_warnhook = Nullsv;
1795 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1796 LEAVE;
1797 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1798 dSP;
1799 SV *msg;
1800
1801 ENTER;
06bf62c7 1802 msg = newSVpvn(message, msglen);
599cee73
PM
1803 SvREADONLY_on(msg);
1804 SAVEFREESV(msg);
1805
1806 PUSHMARK(sp);
1807 XPUSHs(msg);
1808 PUTBACK;
864dbfa3 1809 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1810
1811 LEAVE;
1812 return;
1813 }
1814 }
bf49b057
GS
1815 {
1816 PerlIO *serr = Perl_error_log;
1817 PerlIO_write(serr, message, msglen);
599cee73 1818#ifdef LEAKTEST
bf49b057 1819 DEBUG_L(xstat());
599cee73 1820#endif
bf49b057
GS
1821 (void)PerlIO_flush(serr);
1822 }
599cee73
PM
1823 }
1824}
1825
a0d0e21e 1826#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1827#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1828void
864dbfa3 1829Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1830{
f2517201
GS
1831#ifndef PERL_USE_SAFE_PUTENV
1832 /* most putenv()s leak, so we manipulate environ directly */
79072805 1833 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1834
3280af22 1835 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1836 I32 j;
1837 I32 max;
fe14fcc3
LW
1838 char **tmpenv;
1839
de3bb511 1840 /*SUPPRESS 530*/
fe14fcc3 1841 for (max = i; environ[max]; max++) ;
f2517201
GS
1842 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1843 for (j=0; j<max; j++) { /* copy environment */
1844 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1845 strcpy(tmpenv[j], environ[j]);
1846 }
fe14fcc3
LW
1847 tmpenv[max] = Nullch;
1848 environ = tmpenv; /* tell exec where it is now */
1849 }
a687059c 1850 if (!val) {
f2517201 1851 safesysfree(environ[i]);
a687059c
LW
1852 while (environ[i]) {
1853 environ[i] = environ[i+1];
1854 i++;
1855 }
1856 return;
1857 }
8d063cd8 1858 if (!environ[i]) { /* does not exist yet */
f2517201 1859 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1860 environ[i+1] = Nullch; /* make sure it's null terminated */
1861 }
fe14fcc3 1862 else
f2517201
GS
1863 safesysfree(environ[i]);
1864 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1865
a687059c 1866 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1867
1868#else /* PERL_USE_SAFE_PUTENV */
1869 char *new_env;
1870
1871 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1872 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1873 (void)putenv(new_env);
1874#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1875}
1876
2c2d71f5
JH
1877#else /* WIN32 || CYGWIN */
1878#if defined(CYGWIN)
1cab015a
FE
1879/*
1880 * Save environ of perl.exe, currently Cygwin links in separate environ's
1881 * for each exe/dll. Probably should be a member of impure_ptr.
1882 */
1883static char ***Perl_main_environ;
1884
1885EXTERN_C void
1886Perl_my_setenv_init(char ***penviron)
1887{
1888 Perl_main_environ = penviron;
1889}
1890
1891void
d702ae42 1892Perl_my_setenv(char *nam, char *val)
1cab015a
FE
1893{
1894 /* You can not directly manipulate the environ[] array because
1895 * the routines do some additional work that syncs the Cygwin
1896 * environment with the Windows environment.
1897 */
1898 char *oldstr = environ[setenv_getix(nam)];
1899
1900 if (!val) {
1901 if (!oldstr)
1902 return;
1903 unsetenv(nam);
d702ae42 1904 safesysfree(oldstr);
1cab015a
FE
1905 return;
1906 }
1907 setenv(nam, val, 1);
1908 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1909 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1910 safesysfree(oldstr);
1cab015a 1911}
3e3baf6d 1912#else /* if WIN32 */
68dc0745
PP
1913
1914void
864dbfa3 1915Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1916{
3e3baf6d
TB
1917
1918#ifdef USE_WIN32_RTL_ENV
1919
68dc0745
PP
1920 register char *envstr;
1921 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1922 STRLEN vallen;
1923 char *oldstr = environ[setenv_getix(nam)];
1924
1925 /* putenv() has totally broken semantics in both the Borland
1926 * and Microsoft CRTLs. They either store the passed pointer in
1927 * the environment without making a copy, or make a copy and don't
1928 * free it. And on top of that, they dont free() old entries that
1929 * are being replaced/deleted. This means the caller must
1930 * free any old entries somehow, or we end up with a memory
1931 * leak every time my_setenv() is called. One might think
1932 * one could directly manipulate environ[], like the UNIX code
1933 * above, but direct changes to environ are not allowed when
1934 * calling putenv(), since the RTLs maintain an internal
1935 * *copy* of environ[]. Bad, bad, *bad* stink.
1936 * GSAR 97-06-07
1937 */
68dc0745 1938
3e3baf6d
TB
1939 if (!val) {
1940 if (!oldstr)
1941 return;
1942 val = "";
1943 vallen = 0;
1944 }
1945 else
1946 vallen = strlen(val);
f2517201 1947 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1948 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1949 (void)PerlEnv_putenv(envstr);
3e3baf6d 1950 if (oldstr)
f2517201 1951 safesysfree(oldstr);
3e3baf6d 1952#ifdef _MSC_VER
f2517201 1953 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1954#endif
1955
1956#else /* !USE_WIN32_RTL_ENV */
1957
ac5c734f
GS
1958 register char *envstr;
1959 STRLEN len = strlen(nam) + 3;
1960 if (!val) {
1961 val = "";
1962 }
1963 len += strlen(val);
1964 New(904, envstr, len, char);
1965 (void)sprintf(envstr,"%s=%s",nam,val);
1966 (void)PerlEnv_putenv(envstr);
1967 Safefree(envstr);
3e3baf6d
TB
1968
1969#endif
1970}
1971
1972#endif /* WIN32 */
1cab015a 1973#endif
3e3baf6d
TB
1974
1975I32
864dbfa3 1976Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
1977{
1978 register I32 i, len = strlen(nam);
1979
1980 for (i = 0; environ[i]; i++) {
1981 if (
1982#ifdef WIN32
1983 strnicmp(environ[i],nam,len) == 0
1984#else
1985 strnEQ(environ[i],nam,len)
1986#endif
1987 && environ[i][len] == '=')
1988 break; /* strnEQ must come first to avoid */
1989 } /* potential SEGV's */
1990 return i;
68dc0745
PP
1991}
1992
a0d0e21e 1993#endif /* !VMS */
378cc40b 1994
16d20bd9 1995#ifdef UNLINK_ALL_VERSIONS
79072805 1996I32
864dbfa3 1997Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1998{
79072805 1999 I32 i;
378cc40b 2000
6ad3d225 2001 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
2002 return i ? 0 : -1;
2003}
2004#endif
2005
85e6fe83 2006#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2007char *
864dbfa3 2008Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW
2009{
2010 char *retval = to;
2011
7c0587c8
LW
2012 if (from - to >= 0) {
2013 while (len--)
2014 *to++ = *from++;
2015 }
2016 else {
2017 to += len;
2018 from += len;
2019 while (len--)
faf8582f 2020 *(--to) = *(--from);
7c0587c8 2021 }
378cc40b
LW
2022 return retval;
2023}
ffed7fef 2024#endif
378cc40b 2025
fc36a67e
PP
2026#ifndef HAS_MEMSET
2027void *
864dbfa3 2028Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
2029{
2030 char *retval = loc;
2031
2032 while (len--)
2033 *loc++ = ch;
2034 return retval;
2035}
2036#endif
2037
7c0587c8 2038#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2039char *
864dbfa3 2040Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW
2041{
2042 char *retval = loc;
2043
2044 while (len--)
2045 *loc++ = 0;
2046 return retval;
2047}
2048#endif
7c0587c8 2049
36477c24 2050#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2051I32
864dbfa3 2052Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2053{
36477c24
PP
2054 register U8 *a = (U8 *)s1;
2055 register U8 *b = (U8 *)s2;
79072805 2056 register I32 tmp;
7c0587c8
LW
2057
2058 while (len--) {
36477c24 2059 if (tmp = *a++ - *b++)
7c0587c8
LW
2060 return tmp;
2061 }
2062 return 0;
2063}
36477c24 2064#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2065
fe14fcc3 2066#ifndef HAS_VPRINTF
a687059c 2067
85e6fe83 2068#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2069char *
2070#else
2071int
2072#endif
08105a92 2073vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2074{
2075 FILE fakebuf;
2076
2077 fakebuf._ptr = dest;
2078 fakebuf._cnt = 32767;
35c8bce7
LW
2079#ifndef _IOSTRG
2080#define _IOSTRG 0
2081#endif
a687059c
LW
2082 fakebuf._flag = _IOWRT|_IOSTRG;
2083 _doprnt(pat, args, &fakebuf); /* what a kludge */
2084 (void)putc('\0', &fakebuf);
85e6fe83 2085#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2086 return(dest);
2087#else
2088 return 0; /* perl doesn't use return value */
2089#endif
2090}
2091
fe14fcc3 2092#endif /* HAS_VPRINTF */
a687059c
LW
2093
2094#ifdef MYSWAP
ffed7fef 2095#if BYTEORDER != 0x4321
a687059c 2096short
864dbfa3 2097Perl_my_swap(pTHX_ short s)
a687059c
LW
2098{
2099#if (BYTEORDER & 1) == 0
2100 short result;
2101
2102 result = ((s & 255) << 8) + ((s >> 8) & 255);
2103 return result;
2104#else
2105 return s;
2106#endif
2107}
2108
2109long
864dbfa3 2110Perl_my_htonl(pTHX_ long l)
a687059c
LW
2111{
2112 union {
2113 long result;
ffed7fef 2114 char c[sizeof(long)];
a687059c
LW
2115 } u;
2116
ffed7fef 2117#if BYTEORDER == 0x1234
a687059c
LW
2118 u.c[0] = (l >> 24) & 255;
2119 u.c[1] = (l >> 16) & 255;
2120 u.c[2] = (l >> 8) & 255;
2121 u.c[3] = l & 255;
2122 return u.result;
2123#else
ffed7fef 2124#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2125 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2126#else
79072805
LW
2127 register I32 o;
2128 register I32 s;
a687059c 2129
ffed7fef
LW
2130 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2131 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2132 }
2133 return u.result;
2134#endif
2135#endif
2136}
2137
2138long
864dbfa3 2139Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2140{
2141 union {
2142 long l;
ffed7fef 2143 char c[sizeof(long)];
a687059c
LW
2144 } u;
2145
ffed7fef 2146#if BYTEORDER == 0x1234
a687059c
LW
2147 u.c[0] = (l >> 24) & 255;
2148 u.c[1] = (l >> 16) & 255;
2149 u.c[2] = (l >> 8) & 255;
2150 u.c[3] = l & 255;
2151 return u.l;
2152#else
ffed7fef 2153#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2154 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2155#else
79072805
LW
2156 register I32 o;
2157 register I32 s;
a687059c
LW
2158
2159 u.l = l;
2160 l = 0;
ffed7fef
LW
2161 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2162 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2163 }
2164 return l;
2165#endif
2166#endif
2167}
2168
ffed7fef 2169#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2170#endif /* MYSWAP */
2171
2172/*
2173 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2174 * If these functions are defined,
2175 * the BYTEORDER is neither 0x1234 nor 0x4321.
2176 * However, this is not assumed.
2177 * -DWS
2178 */
2179
2180#define HTOV(name,type) \
2181 type \
ba106d47 2182 name (register type n) \
988174c1
LW
2183 { \
2184 union { \
2185 type value; \
2186 char c[sizeof(type)]; \
2187 } u; \
79072805
LW
2188 register I32 i; \
2189 register I32 s; \
988174c1
LW
2190 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2191 u.c[i] = (n >> s) & 0xFF; \
2192 } \
2193 return u.value; \
2194 }
2195
2196#define VTOH(name,type) \
2197 type \
ba106d47 2198 name (register type n) \
988174c1
LW
2199 { \
2200 union { \
2201 type value; \
2202 char c[sizeof(type)]; \
2203 } u; \
79072805
LW
2204 register I32 i; \
2205 register I32 s; \
988174c1
LW
2206 u.value = n; \
2207 n = 0; \
2208 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2209 n += (u.c[i] & 0xFF) << s; \
2210 } \
2211 return n; \
2212 }
2213
2214#if defined(HAS_HTOVS) && !defined(htovs)
2215HTOV(htovs,short)
2216#endif
2217#if defined(HAS_HTOVL) && !defined(htovl)
2218HTOV(htovl,long)
2219#endif
2220#if defined(HAS_VTOHS) && !defined(vtohs)
2221VTOH(vtohs,short)
2222#endif
2223#if defined(HAS_VTOHL) && !defined(vtohl)
2224VTOH(vtohl,long)
2225#endif
a687059c 2226
5f05dabc 2227 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2228#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2229PerlIO *
864dbfa3 2230Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2231{
2232 int p[2];
8ac85365 2233 register I32 This, that;
d8a83dd3 2234 register Pid_t pid;
79072805 2235 SV *sv;
1738f5c4 2236 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2237 I32 did_pipes = 0;
2238 int pp[2];
a687059c 2239
45bc9206 2240 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2241#ifdef OS2
2242 if (doexec) {
2243 return my_syspopen(cmd,mode);
2244 }
2245#endif
8ac85365
NIS
2246 This = (*mode == 'w');
2247 that = !This;
3280af22 2248 if (doexec && PL_tainting) {
bbce6d69
PP
2249 taint_env();
2250 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2251 }
c2267164
IZ
2252 if (PerlProc_pipe(p) < 0)
2253 return Nullfp;
e446cec8
IZ
2254 if (doexec && PerlProc_pipe(pp) >= 0)
2255 did_pipes = 1;
a687059c
LW
2256 while ((pid = (doexec?vfork():fork())) < 0) {
2257 if (errno != EAGAIN) {
6ad3d225 2258 PerlLIO_close(p[This]);
e446cec8
IZ
2259 if (did_pipes) {
2260 PerlLIO_close(pp[0]);
2261 PerlLIO_close(pp[1]);
2262 }
a687059c 2263 if (!doexec)
cea2e8a9 2264 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2265 return Nullfp;
2266 }
2267 sleep(5);
2268 }
2269 if (pid == 0) {
79072805
LW
2270 GV* tmpgv;
2271
30ac6d9b
GS
2272#undef THIS
2273#undef THAT
a687059c 2274#define THIS that
8ac85365 2275#define THAT This
6ad3d225 2276 PerlLIO_close(p[THAT]);
e446cec8
IZ
2277 if (did_pipes) {
2278 PerlLIO_close(pp[0]);
2279#if defined(HAS_FCNTL) && defined(F_SETFD)
2280 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2281#endif
2282 }
a687059c 2283 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2284 PerlLIO_dup2(p[THIS], *mode == 'r');
2285 PerlLIO_close(p[THIS]);
a687059c 2286 }
4435c477 2287#ifndef OS2
a687059c 2288 if (doexec) {
a0d0e21e 2289#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2290 int fd;
2291
2292#ifndef NOFILE
2293#define NOFILE 20
2294#endif
6b88bc9c 2295 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2296 if (fd != pp[1])
2297 PerlLIO_close(fd);
ae986130 2298#endif
e446cec8 2299 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2300 PerlProc__exit(1);
a687059c 2301 }
4435c477 2302#endif /* defined OS2 */
de3bb511 2303 /*SUPPRESS 560*/
85e6fe83 2304 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
7766f137 2305 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS
2306 PL_forkprocess = 0;
2307 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2308 return Nullfp;
2309#undef THIS
2310#undef THAT
2311 }
62b28dd9 2312 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2313 PerlLIO_close(p[that]);
e446cec8
IZ
2314 if (did_pipes)
2315 PerlLIO_close(pp[1]);
8ac85365 2316 if (p[that] < p[This]) {
6ad3d225
GS
2317 PerlLIO_dup2(p[This], p[that]);
2318 PerlLIO_close(p[This]);
8ac85365 2319 p[This] = p[that];
62b28dd9 2320 }
3280af22 2321 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2322 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2323 SvIVX(sv) = pid;
3280af22 2324 PL_forkprocess = pid;
e446cec8
IZ
2325 if (did_pipes && pid > 0) {
2326 int errkid;
2327 int n = 0, n1;
2328
2329 while (n < sizeof(int)) {
2330 n1 = PerlLIO_read(pp[0],
2331 (void*)(((char*)&errkid)+n),
2332 (sizeof(int)) - n);
2333 if (n1 <= 0)
2334 break;
2335 n += n1;
2336 }
2f96c702
IZ
2337 PerlLIO_close(pp[0]);
2338 did_pipes = 0;
e446cec8
IZ
2339 if (n) { /* Error */
2340 if (n != sizeof(int))
cea2e8a9 2341 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2342 errno = errkid; /* Propagate errno from kid */
2343 return Nullfp;
2344 }
2345 }
2346 if (did_pipes)
2347 PerlLIO_close(pp[0]);
8ac85365 2348 return PerlIO_fdopen(p[This], mode);
a687059c 2349}
7c0587c8 2350#else
55497cff 2351#if defined(atarist) || defined(DJGPP)
7c0587c8 2352FILE *popen();
760ac839 2353PerlIO *
864dbfa3 2354Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2355{
760ac839 2356 /* Needs work for PerlIO ! */
55497cff 2357 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2358 PERL_FLUSHALL_FOR_CHILD;
55497cff 2359 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2360}
2361#endif
2362
2363#endif /* !DOSISH */
a687059c 2364
748a9306 2365#ifdef DUMP_FDS
35ff7856 2366void
864dbfa3 2367Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2368{
2369 int fd;
2370 struct stat tmpstatbuf;
2371
bf49b057 2372 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2373 for (fd = 0; fd < 32; fd++) {
6ad3d225 2374 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2375 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2376 }
bf49b057 2377 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2378}
35ff7856 2379#endif /* DUMP_FDS */
ae986130 2380
fe14fcc3 2381#ifndef HAS_DUP2
fec02dd3 2382int
ba106d47 2383dup2(int oldfd, int newfd)
a687059c 2384{
a0d0e21e 2385#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2386 if (oldfd == newfd)
2387 return oldfd;
6ad3d225 2388 PerlLIO_close(newfd);
fec02dd3 2389 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2390#else
fc36a67e
PP
2391#define DUP2_MAX_FDS 256
2392 int fdtmp[DUP2_MAX_FDS];
79072805 2393 I32 fdx = 0;
ae986130
LW
2394 int fd;
2395
fe14fcc3 2396 if (oldfd == newfd)
fec02dd3 2397 return oldfd;
6ad3d225 2398 PerlLIO_close(newfd);
fc36a67e 2399 /* good enough for low fd's... */
6ad3d225 2400 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2401 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2402 PerlLIO_close(fd);
fc36a67e
PP
2403 fd = -1;
2404 break;
2405 }
ae986130 2406 fdtmp[fdx++] = fd;
fc36a67e 2407 }
ae986130 2408 while (fdx > 0)
6ad3d225 2409 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2410 return fd;
62b28dd9 2411#endif
a687059c
LW
2412}
2413#endif
2414
ff68c719
PP
2415
2416#ifdef HAS_SIGACTION
2417
2418Sighandler_t
864dbfa3 2419Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2420{
2421 struct sigaction act, oact;
2422
2423 act.sa_handler = handler;
2424 sigemptyset(&act.sa_mask);
2425 act.sa_flags = 0;
2426#ifdef SA_RESTART
2427 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2428#endif
85264bed
CS
2429#ifdef SA_NOCLDWAIT
2430 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2431 act.sa_flags |= SA_NOCLDWAIT;
2432#endif
ff68c719 2433 if (sigaction(signo, &act, &oact) == -1)
36477c24 2434 return SIG_ERR;
ff68c719 2435 else
36477c24 2436 return oact.sa_handler;
ff68c719
PP
2437}
2438
2439Sighandler_t
864dbfa3 2440Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2441{
2442 struct sigaction oact;
2443
2444 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2445 return SIG_ERR;
2446 else
2447 return oact.sa_handler;
2448}
2449
2450int
864dbfa3 2451Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2452{
2453 struct sigaction act;
2454
2455 act.sa_handler = handler;
2456 sigemptyset(&act.sa_mask);
2457 act.sa_flags = 0;
2458#ifdef SA_RESTART
2459 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2460#endif
85264bed
CS
2461#ifdef SA_NOCLDWAIT
2462 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2463 act.sa_flags |= SA_NOCLDWAIT;
2464#endif
ff68c719
PP
2465 return sigaction(signo, &act, save);
2466}
2467
2468int
864dbfa3 2469Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2470{
2471 return sigaction(signo, save, (struct sigaction *)NULL);
2472}
2473
2474#else /* !HAS_SIGACTION */
2475
2476Sighandler_t
864dbfa3 2477Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2478{
6ad3d225 2479 return PerlProc_signal(signo, handler);
ff68c719
PP
2480}
2481
2482static int sig_trapped;
2483
2484static
2485Signal_t
4e35701f 2486sig_trap(int signo)
ff68c719
PP
2487{
2488 sig_trapped++;
2489}
2490
2491Sighandler_t
864dbfa3 2492Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2493{
2494 Sighandler_t oldsig;
2495
2496 sig_trapped = 0;
6ad3d225
GS
2497 oldsig = PerlProc_signal(signo, sig_trap);
2498 PerlProc_signal(signo, oldsig);
ff68c719 2499 if (sig_trapped)
7766f137 2500 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719
PP
2501 return oldsig;
2502}
2503
2504int
864dbfa3 2505Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2506{
6ad3d225 2507 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2508 return (*save == SIG_ERR) ? -1 : 0;
2509}
2510
2511int
864dbfa3 2512Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2513{
6ad3d225 2514 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2515}
2516
2517#endif /* !HAS_SIGACTION */
2518
5f05dabc 2519 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2520#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2521I32
864dbfa3 2522Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2523{
ff68c719 2524 Sigsave_t hstat, istat, qstat;
a687059c 2525 int status;
a0d0e21e 2526 SV **svp;
d8a83dd3
JH
2527 Pid_t pid;
2528 Pid_t pid2;
03136e13
CS
2529 bool close_failed;
2530 int saved_errno;
2531#ifdef VMS
2532 int saved_vaxc_errno;
2533#endif
22fae026
TM
2534#ifdef WIN32
2535 int saved_win32_errno;
2536#endif
a687059c 2537
3280af22 2538 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2539 pid = SvIVX(*svp);
a0d0e21e 2540 SvREFCNT_dec(*svp);
3280af22 2541 *svp = &PL_sv_undef;
ddcf38b7
IZ
2542#ifdef OS2
2543 if (pid == -1) { /* Opened by popen. */
2544 return my_syspclose(ptr);
2545 }
2546#endif
03136e13
CS
2547 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2548 saved_errno = errno;
2549#ifdef VMS
2550 saved_vaxc_errno = vaxc$errno;
2551#endif
22fae026
TM
2552#ifdef WIN32
2553 saved_win32_errno = GetLastError();
2554#endif
03136e13 2555 }
7c0587c8 2556#ifdef UTS
6ad3d225 2557 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2558#endif
ff68c719
PP
2559 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2560 rsignal_save(SIGINT, SIG_IGN, &istat);
2561 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2562 do {
1d3434b8
GS
2563 pid2 = wait4pid(pid, &status, 0);
2564 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2565 rsignal_restore(SIGHUP, &hstat);
2566 rsignal_restore(SIGINT, &istat);
2567 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2568 if (close_failed) {
2569 SETERRNO(saved_errno, saved_vaxc_errno);
2570 return -1;
2571 }
1d3434b8 2572 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2573}
4633a7c4
LW
2574#endif /* !DOSISH */
2575
cd39f2b6 2576#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2577I32
d8a83dd3 2578Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2579{
79072805
LW
2580 SV *sv;
2581 SV** svp;
fc36a67e 2582 char spid[TYPE_CHARS(int)];
20188a90
LW
2583
2584 if (!pid)
2585 return -1;
20188a90 2586 if (pid > 0) {
7b0972df 2587 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS
2588 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2589 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2590 *statusp = SvIVX(*svp);
3280af22 2591 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2592 return pid;
2593 }
2594 }
2595 else {
79072805 2596 HE *entry;
20188a90 2597
3280af22
NIS
2598 hv_iterinit(PL_pidstatus);
2599 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2600 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2601 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2602 *statusp = SvIVX(sv);
7b0972df 2603 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2604 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2605 return pid;
2606 }
2607 }
79072805 2608#ifdef HAS_WAITPID
367f3c24
IZ
2609# ifdef HAS_WAITPID_RUNTIME
2610 if (!HAS_WAITPID_RUNTIME)
2611 goto hard_way;
2612# endif
f55ee38a 2613 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2614#endif
2615#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2616 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2617#endif
2618#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2619 hard_way:
a0d0e21e
LW
2620 {
2621 I32 result;
2622 if (flags)
cea2e8a9 2623 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2624 else {
76e3520e 2625 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2626 pidgone(result,*statusp);
2627 if (result < 0)
2628 *statusp = -1;
2629 }
2630 return result;
a687059c
LW
2631 }
2632#endif
a687059c 2633}
2d7a9237 2634#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2635
7c0587c8 2636void
de3bb511 2637/*SUPPRESS 590*/
d8a83dd3 2638Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2639{
79072805 2640 register SV *sv;
fc36a67e 2641 char spid[TYPE_CHARS(int)];
a687059c 2642
7b0972df 2643 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2644 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2645 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2646 SvIVX(sv) = status;
20188a90 2647 return;
a687059c
LW
2648}
2649
55497cff 2650#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2651int pclose();
ddcf38b7
IZ
2652#ifdef HAS_FORK
2653int /* Cannot prototype with I32
2654 in os2ish.h. */
ba106d47 2655my_syspclose(PerlIO *ptr)
ddcf38b7 2656#else
79072805 2657I32
864dbfa3 2658Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2659#endif
a687059c 2660{
760ac839
LW
2661 /* Needs work for PerlIO ! */
2662 FILE *f = PerlIO_findFILE(ptr);
2663 I32 result = pclose(f);
933fea7f
GS
2664#if defined(DJGPP)
2665 result = (result << 8) & 0xff00;
2666#endif
760ac839
LW
2667 PerlIO_releaseFILE(ptr,f);
2668 return result;
a687059c 2669}
7c0587c8 2670#endif
9f68db38
LW
2671
2672void
864dbfa3 2673Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2674{
79072805 2675 register I32 todo;
08105a92 2676 register const char *frombase = from;
9f68db38
LW
2677
2678 if (len == 1) {
08105a92 2679 register const char c = *from;
9f68db38 2680 while (count-- > 0)
5926133d 2681 *to++ = c;
9f68db38
LW
2682 return;
2683 }
2684 while (count-- > 0) {
2685 for (todo = len; todo > 0; todo--) {
2686 *to++ = *from++;
2687 }
2688 from = frombase;
2689 }
2690}
0f85fab0 2691
463ee0b2 2692U32
65202027 2693Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2694{
2695 long along;
2696
27e2fb84 2697#if CASTFLAGS & 2
34de22dd
LW
2698# define BIGDOUBLE 2147483648.0
2699 if (f >= BIGDOUBLE)
2700 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2701#endif
0f85fab0
LW
2702 if (f >= 0.0)
2703 return (unsigned long)f;
2704 along = (long)f;
2705 return (unsigned long)along;
2706}
ed6116ce 2707# undef BIGDOUBLE
5d94fbed 2708
5d94fbed
AD
2709/* Unfortunately, on some systems the cast_uv() function doesn't
2710 work with the system-supplied definition of ULONG_MAX. The
2711 comparison (f >= ULONG_MAX) always comes out true. It must be a
2712 problem with the compiler constant folding.
2713
2714 In any case, this workaround should be fine on any two's complement
2715 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2716 ccflags.
2717 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2718*/
1eb770ff
PP
2719
2720/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2721 of LONG_(MIN/MAX).
2722 -- Kenneth Albanowski <kjahds@kjahds.com>
2723*/
2724
20cec16a
PP
2725#ifndef MY_UV_MAX
2726# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2727#endif
2728
ed6116ce 2729I32
65202027 2730Perl_cast_i32(pTHX_ NV f)
ed6116ce 2731{
20cec16a
PP
2732 if (f >= I32_MAX)
2733 return (I32) I32_MAX;
2734 if (f <= I32_MIN)
2735 return (I32) I32_MIN;
ed6116ce
LW
2736 return (I32) f;
2737}
a0d0e21e
LW
2738
2739IV
65202027 2740Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2741{
25da4f38
IZ
2742 if (f >= IV_MAX) {
2743 UV uv;
2744
65202027 2745 if (f >= (NV)UV_MAX)
25da4f38
IZ
2746 return (IV) UV_MAX;
2747 uv = (UV) f;
2748 return (IV)uv;
2749 }
20cec16a
PP
2750 if (f <= IV_MIN)
2751 return (IV) IV_MIN;
a0d0e21e
LW
2752 return (IV) f;
2753}
5d94fbed
AD
2754
2755UV
65202027 2756Perl_cast_uv(pTHX_ NV f)
5d94fbed 2757{
20cec16a
PP
2758 if (f >= MY_UV_MAX)
2759 return (UV) MY_UV_MAX;
25da4f38
IZ
2760 if (f < 0) {
2761 IV iv;
2762
2763 if (f < IV_MIN)
2764 return (UV)IV_MIN;
2765 iv = (IV) f;
2766 return (UV) iv;
2767 }
5d94fbed
AD
2768 return (UV) f;
2769}
2770
fe14fcc3 2771#ifndef HAS_RENAME
79072805 2772I32
864dbfa3 2773Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2774{
93a17b20
LW
2775 char *fa = strrchr(a,'/');
2776 char *fb = strrchr(b,'/');
62b28dd9
LW
2777 struct stat tmpstatbuf1;
2778 struct stat tmpstatbuf2;
46fc3d4c 2779 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2780
2781 if (fa)
2782 fa++;
2783 else
2784 fa = a;
2785 if (fb)
2786 fb++;
2787 else
2788 fb = b;
2789 if (strNE(a,b))
2790 return FALSE;
2791 if (fa == a)
46fc3d4c 2792 sv_setpv(tmpsv, ".");
62b28dd9 2793 else
46fc3d4c 2794 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2795 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2796 return FALSE;
2797 if (fb == b)
46fc3d4c 2798 sv_setpv(tmpsv, ".");
62b28dd9 2799 else
46fc3d4c 2800 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2801 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2802 return FALSE;
2803 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2804 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2805}
fe14fcc3
LW
2806#endif /* !HAS_RENAME */
2807
9e24b6e2 2808NV
864dbfa3 2809Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2810{
2811 register char *s = start;
9e24b6e2
JH
2812 register NV rnv = 0.0;
2813 register UV ruv = 0;
252aa082 2814 register bool seenb = FALSE;
9e24b6e2 2815 register bool overflowed = FALSE;
252aa082
JH
2816
2817 for (; len-- && *s; s++) {
2818 if (!(*s == '0' || *s == '1')) {
2819 if (*s == '_')
9e24b6e2 2820 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2821 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
2822 /* Disallow 0bbb0b0bbb... */
2823 seenb = TRUE;
252aa082
JH
2824 continue;
2825 }
2826 else {
2827 dTHR;
627300f0
JH
2828 if (ckWARN(WARN_DIGIT))
2829 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2830 "Illegal binary digit '%c' ignored", *s);
2831 break;
2832 }
9e24b6e2
JH
2833 }
2834 if (!overflowed) {
2835 register UV xuv = ruv << 1;
2836
2837 if ((xuv >> 1) != ruv) {
2838 dTHR;
2839 overflowed = TRUE;
2840 rnv = (NV) ruv;
627300f0
JH
2841 if (ckWARN_d(WARN_OVERFLOW))
2842 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2843 "Integer overflow in binary number");
2844 } else
2845 ruv = xuv | (*s - '0');
2846 }
2847 if (overflowed) {
2848 rnv *= 2;
2849 /* If an NV has not enough bits in its mantissa to
2850 * represent an UV this summing of small low-order numbers
2851 * is a waste of time (because the NV cannot preserve
2852 * the low-order bits anyway): we could just remember when
2853 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2854 * right amount. */
9e24b6e2 2855 rnv += (*s - '0');
f248d071 2856 }
4f19785b 2857 }
9e24b6e2
JH
2858 if (!overflowed)
2859 rnv = (NV) ruv;
893fe2c2 2860 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2861#if UVSIZE > 4
893fe2c2
JH
2862 || (!overflowed && ruv > 0xffffffff )
2863#endif
2864 ) {
252aa082 2865 dTHR;
627300f0
JH
2866 if (ckWARN(WARN_PORTABLE))
2867 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2868 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
2869 }
2870 *retlen = s - start;
9e24b6e2 2871 return rnv;
4f19785b 2872}
9e24b6e2
JH
2873
2874NV
864dbfa3 2875Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2876{
2877 register char *s = start;
9e24b6e2
JH
2878 register NV rnv = 0.0;
2879 register UV ruv = 0;
2880 register bool overflowed = FALSE;
252aa082
JH
2881
2882 for (; len-- && *s; s++) {
2883 if (!(*s >= '0' && *s <= '7')) {
2884 if (*s == '_')
9e24b6e2 2885 continue; /* Note: does not check for __ and the like. */
252aa082 2886 else {
f84f607d
JH
2887 /* Allow \octal to work the DWIM way (that is, stop scanning
2888 * as soon as non-octal characters are seen, complain only iff
2889 * someone seems to want to use the digits eight and nine). */
252aa082
JH
2890 if (*s == '8' || *s == '9') {
2891 dTHR;
627300f0
JH
2892 if (ckWARN(WARN_DIGIT))
2893 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2894 "Illegal octal digit '%c' ignored", *s);
2895 }
2896 break;
2897 }
55497cff 2898 }
9e24b6e2 2899 if (!overflowed) {
893fe2c2 2900 register UV xuv = ruv << 3;
9e24b6e2
JH
2901
2902 if ((xuv >> 3) != ruv) {
2903 dTHR;
2904 overflowed = TRUE;
2905 rnv = (NV) ruv;
627300f0
JH
2906 if (ckWARN_d(WARN_OVERFLOW))
2907 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2908 "Integer overflow in octal number");
2909 } else
2910 ruv = xuv | (*s - '0');
2911 }
2912 if (overflowed) {
2913 rnv *= 8.0;
2914 /* If an NV has not enough bits in its mantissa to
2915 * represent an UV this summing of small low-order numbers
2916 * is a waste of time (because the NV cannot preserve
2917 * the low-order bits anyway): we could just remember when
2918 * did we overflow and in the end just multiply rnv by the
2919 * right amount of 8-tuples. */
2920 rnv += (NV)(*s - '0');
2921 }
fe14fcc3 2922 }
9e24b6e2
JH
2923 if (!overflowed)
2924 rnv = (NV) ruv;
893fe2c2 2925 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2926#if UVSIZE > 4
893fe2c2
JH
2927 || (!overflowed && ruv > 0xffffffff )
2928#endif
2929 ) {
d008e5eb 2930 dTHR;
627300f0
JH
2931 if (ckWARN(WARN_PORTABLE))
2932 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2933 "Octal number > 037777777777 non-portable");
d008e5eb 2934 }
fe14fcc3 2935 *retlen = s - start;
9e24b6e2 2936 return rnv;
fe14fcc3
LW
2937}
2938
9e24b6e2 2939NV
864dbfa3 2940Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2941{
2942 register char *s = start;
9e24b6e2
JH
2943 register NV rnv = 0.0;
2944 register UV ruv = 0;
252aa082 2945 register bool seenx = FALSE;
9e24b6e2 2946 register bool overflowed = FALSE;
9e24b6e2 2947 char *hexdigit;
fe14fcc3 2948
9e24b6e2
JH
2949 for (; len-- && *s; s++) {
2950 hexdigit = strchr((char *) PL_hexdigit, *s);
2951 if (!hexdigit) {
2952 if (*s == '_')
2953 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2954 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH
2955 /* Disallow 0xxx0x0xxx... */
2956 seenx = TRUE;
252aa082
JH
2957 continue;
2958 }
a0ed51b3 2959 else {
d008e5eb 2960 dTHR;
627300f0
JH
2961 if (ckWARN(WARN_DIGIT))
2962 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2963 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
2964 break;
2965 }
2966 }
9e24b6e2
JH
2967 if (!overflowed) {
2968 register UV xuv = ruv << 4;
2969
2970 if ((xuv >> 4) != ruv) {
2971 dTHR;
2972 overflowed = TRUE;
2973 rnv = (NV) ruv;
627300f0
JH
2974 if (ckWARN_d(WARN_OVERFLOW))
2975 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2976 "Integer overflow in hexadecimal number");
2977 } else
2978 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2979 }
2980 if (overflowed) {
2981 rnv *= 16.0;
2982 /* If an NV has not enough bits in its mantissa to
2983 * represent an UV this summing of small low-order numbers
2984 * is a waste of time (because the NV cannot preserve
2985 * the low-order bits anyway): we could just remember when
2986 * did we overflow and in the end just multiply rnv by the
2987 * right amount of 16-tuples. */
2988 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2989 }
6ff81951 2990 }
9e24b6e2
JH
2991 if (!overflowed)
2992 rnv = (NV) ruv;
893fe2c2 2993 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2994#if UVSIZE > 4
893fe2c2
JH
2995 || (!overflowed && ruv > 0xffffffff )
2996#endif
2997 ) {
252aa082 2998 dTHR;
627300f0
JH
2999 if (ckWARN(WARN_PORTABLE))
3000 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
3001 "Hexadecimal number > 0xffffffff non-portable");
3002 }
fe14fcc3 3003 *retlen = s - start;
9e24b6e2 3004 return rnv;
fe14fcc3 3005}
760ac839 3006
491527d0 3007char*
864dbfa3 3008Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
3009{
3010 dTHR;
3011 char *xfound = Nullch;
3012 char *xfailed = Nullch;
0f31cffe 3013 char tmpbuf[MAXPATHLEN];
491527d0
GS
3014 register char *s;
3015 I32 len;
3016 int retval;
3017#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3018# define SEARCH_EXTS ".bat", ".cmd", NULL
3019# define MAX_EXT_LEN 4
3020#endif
3021#ifdef OS2
3022# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3023# define MAX_EXT_LEN 4
3024#endif
3025#ifdef VMS
3026# define SEARCH_EXTS ".pl", ".com", NULL
3027# define MAX_EXT_LEN 4
3028#endif
3029 /* additional extensions to try in each dir if scriptname not found */
3030#ifdef SEARCH_EXTS
3031 char *exts[] = { SEARCH_EXTS };
3032 char **ext = search_ext ? search_ext : exts;
3033 int extidx = 0, i = 0;
3034 char *curext = Nullch;
3035#else
3036# define MAX_EXT_LEN 0
3037#endif
3038
3039 /*
3040 * If dosearch is true and if scriptname does not contain path
3041 * delimiters, search the PATH for scriptname.
3042 *
3043 * If SEARCH_EXTS is also defined, will look for each
3044 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3045 * while searching the PATH.
3046 *
3047 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3048 * proceeds as follows:
3049 * If DOSISH or VMSISH:
3050 * + look for ./scriptname{,.foo,.bar}
3051 * + search the PATH for scriptname{,.foo,.bar}
3052 *
3053 * If !DOSISH:
3054 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3055 * this will not look in '.' if it's not in the PATH)
3056 */
84486fc6 3057 tmpbuf[0] = '\0';
491527d0
GS
3058
3059#ifdef VMS
3060# ifdef ALWAYS_DEFTYPES
3061 len = strlen(scriptname);
3062 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3063 int hasdir, idx = 0, deftypes = 1;
3064 bool seen_dot = 1;
3065
3066 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3067# else
3068 if (dosearch) {
3069 int hasdir, idx = 0, deftypes = 1;
3070 bool seen_dot = 1;
3071
3072 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3073# endif
3074 /* The first time through, just add SEARCH_EXTS to whatever we
3075 * already have, so we can check for default file types. */
3076 while (deftypes ||
84486fc6 3077 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3078 {
3079 if (deftypes) {
3080 deftypes = 0;
84486fc6 3081 *tmpbuf = '\0';
491527d0 3082 }
84486fc6
GS
3083 if ((strlen(tmpbuf) + strlen(scriptname)
3084 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3085 continue; /* don't search dir with too-long name */
84486fc6 3086 strcat(tmpbuf, scriptname);
491527d0
GS
3087#else /* !VMS */
3088
3089#ifdef DOSISH
3090 if (strEQ(scriptname, "-"))
3091 dosearch = 0;
3092 if (dosearch) { /* Look in '.' first. */
3093 char *cur = scriptname;
3094#ifdef SEARCH_EXTS
3095 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3096 while (ext[i])
3097 if (strEQ(ext[i++],curext)) {
3098 extidx = -1; /* already has an ext */
3099 break;
3100 }
3101 do {
3102#endif
3103 DEBUG_p(PerlIO_printf(Perl_debug_log,
3104 "Looking for %s\n",cur));
017f25f1
IZ
3105 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3106 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3107 dosearch = 0;
3108 scriptname = cur;
3109#ifdef SEARCH_EXTS
3110 break;
3111#endif
3112 }
3113#ifdef SEARCH_EXTS
3114 if (cur == scriptname) {
3115 len = strlen(scriptname);
84486fc6 3116 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3117 break;
84486fc6 3118 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3119 }
3120 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3121 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3122#endif
3123 }
3124#endif
3125
cd39f2b6
JH
3126#ifdef MACOS_TRADITIONAL
3127 if (dosearch && !strchr(scriptname, ':') &&
3128 (s = PerlEnv_getenv("Commands")))
3129#else
491527d0
GS
3130 if (dosearch && !strchr(scriptname, '/')
3131#ifdef DOSISH
3132 && !strchr(scriptname, '\\')
3133#endif
cd39f2b6
JH
3134 && (s = PerlEnv_getenv("PATH")))
3135#endif
3136 {
491527d0
GS
3137 bool seen_dot = 0;
3138
3280af22
NIS
3139 PL_bufend = s + strlen(s);
3140 while (s < PL_bufend) {
cd39f2b6
JH
3141#ifdef MACOS_TRADITIONAL
3142 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3143 ',',
3144 &len);
3145#else
491527d0
GS
3146#if defined(atarist) || defined(DOSISH)
3147 for (len = 0; *s
3148# ifdef atarist
3149 && *s != ','
3150# endif
3151 && *s != ';'; len++, s++) {
84486fc6
GS
3152 if (len < sizeof tmpbuf)
3153 tmpbuf[len] = *s;
491527d0 3154 }
84486fc6
GS
3155 if (len < sizeof tmpbuf)
3156 tmpbuf[len] = '\0';
491527d0 3157#else /* ! (atarist || DOSISH) */
3280af22 3158 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3159 ':',
3160 &len);
3161#endif /* ! (atarist || DOSISH) */
cd39f2b6 3162#endif /* MACOS_TRADITIONAL */
3280af22 3163 if (s < PL_bufend)
491527d0 3164 s++;
84486fc6 3165 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3166 continue; /* don't search dir with too-long name */
cd39f2b6
JH
3167#ifdef MACOS_TRADITIONAL
3168 if (len && tmpbuf[len - 1] != ':')
3169 tmpbuf[len++] = ':';
3170#else
491527d0 3171 if (len
61ae2fbf 3172#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3173 && tmpbuf[len - 1] != '/'
3174 && tmpbuf[len - 1] != '\\'
491527d0
GS
3175#endif
3176 )
84486fc6
GS
3177 tmpbuf[len++] = '/';
3178 if (len == 2 && tmpbuf[0] == '.')
491527d0 3179 seen_dot = 1;
cd39f2b6 3180#endif
84486fc6 3181 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3182#endif /* !VMS */
3183
3184#ifdef SEARCH_EXTS
84486fc6 3185 len = strlen(tmpbuf);
491527d0
GS
3186 if (extidx > 0) /* reset after previous loop */
3187 extidx = 0;
3188 do {
3189#endif
84486fc6 3190 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3191 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3192 if (S_ISDIR(PL_statbuf.st_mode)) {
3193 retval = -1;
3194 }
491527d0
GS
3195#ifdef SEARCH_EXTS
3196 } while ( retval < 0 /* not there */
3197 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3198 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3199 );
3200#endif
3201 if (retval < 0)
3202 continue;
3280af22
NIS
3203 if (S_ISREG(PL_statbuf.st_mode)
3204 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3205#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3206 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3207#endif
3208 )
3209 {
84486fc6 3210 xfound = tmpbuf; /* bingo! */
491527d0
GS
3211 break;
3212 }
3213 if (!xfailed)
84486fc6 3214 xfailed = savepv(tmpbuf);
491527d0
GS
3215 }
3216#ifndef DOSISH
017f25f1
IZ
3217 if (!xfound && !seen_dot && !xfailed &&
3218 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3219 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3220#endif
3221 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3222 if (!xfound) {
3223 if (flags & 1) { /* do or die? */
cea2e8a9 3224 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3225 (xfailed ? "execute" : "find"),
3226 (xfailed ? xfailed : scriptname),
3227 (xfailed ? "" : " on PATH"),
3228 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3229 }
3230 scriptname = Nullch;
3231 }
491527d0
GS
3232 if (xfailed)
3233 Safefree(xfailed);
3234 scriptname = xfound;
3235 }
9ccb31f9 3236 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3237}
3238
3239
11343788 3240#ifdef USE_THREADS
12ca11f6
MB
3241#ifdef FAKE_THREADS
3242/* Very simplistic scheduler for now */
3243void
3244schedule(void)
3245{
c7848ba1 3246 thr = thr->i.next_run;
12ca11f6
MB
3247}
3248
3249void
864dbfa3 3250Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3251{
3252 *cp = 0;
3253}
3254
3255void
864dbfa3 3256Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3257{
51dd5992 3258 perl_os_thread t;
12ca11f6
MB
3259 perl_cond cond = *cp;
3260
3261 if (!cond)
3262 return;
3263 t = cond->thread;
3264 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3265 t->i.next_run = thr->i.next_run;
3266 thr->i.next_run->i.prev_run = t;
3267 t->i.prev_run = thr;
3268 thr->i.next_run = t;
3269 thr->i.wait_queue = 0;
12ca11f6
MB
3270 /* Remove from the wait queue */
3271 *cp = cond->next;
3272 Safefree(cond);
3273}
3274
3275void
864dbfa3 3276Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3277{
51dd5992 3278 perl_os_thread t;
12ca11f6
MB
3279 perl_cond cond, cond_next;
3280
3281 for (cond = *cp; cond; cond = cond_next) {
3282 t = cond->thread;
3283 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3284 t->i.next_run = thr->i.next_run;
3285 thr->i.next_run->i.prev_run = t;
3286 t->i.prev_run = thr;
3287 thr->i.next_run = t;
3288 thr->i.wait_queue = 0;
12ca11f6
MB
3289 /* Remove from the wait queue */
3290 cond_next = cond->next;
3291 Safefree(cond);
3292 }
3293 *cp = 0;
3294}
3295
3296void
864dbfa3 3297Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3298{
3299 perl_cond cond;
3300
c7848ba1 3301 if (thr->i.next_run == thr)
cea2e8a9 3302 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3303
0f15f207 3304 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3305 cond->thread = thr;
3306 cond->next = *cp;
3307 *cp = cond;
c7848ba1 3308 thr->i.wait_queue = cond;
12ca11f6 3309 /* Remove ourselves from runnable queue */
c7848ba1
MB
3310 thr->i.next_run->i.prev_run = thr->i.prev_run;
3311 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3312}
3313#endif /* FAKE_THREADS */
3314
0d85d877 3315#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3316struct perl_thread *
864dbfa3 3317Perl_getTHR(pTHX)
11343788
MB
3318{
3319 pthread_addr_t t;
3320
6b88bc9c 3321 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3322 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3323 return (struct perl_thread *) t;
11343788 3324}
0d85d877 3325#endif
f93b4edd
MB
3326
3327MAGIC *
864dbfa3 3328Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3329{
3330 MAGIC *mg;
3331
3332 SvUPGRADE(sv, SVt_PVMG);
3333 mg = mg_find(sv, 'm');
3334 if (!mg) {
3335 condpair_t *cp;
3336
3337 New(53, cp, 1, condpair_t);
3338 MUTEX_INIT(&cp->mutex);
3339 COND_INIT(&cp->owner_cond);
3340 COND_INIT(&cp->cond);
3341 cp->owner = 0;
1feb2720 3342 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB
3343 mg = mg_find(sv, 'm');
3344 if (mg) {
3345 /* someone else beat us to initialising it */
1feb2720 3346 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB
3347 MUTEX_DESTROY(&cp->mutex);
3348 COND_DESTROY(&cp->owner_cond);
3349 COND_DESTROY(&cp->cond);
3350 Safefree(cp);
3351 }
3352 else {
3353 sv_magic(sv, Nullsv, 'm', 0, 0);
3354 mg = SvMAGIC(sv);
3355 mg->mg_ptr = (char *)cp;
565764a8 3356 mg->mg_len = sizeof(cp);
1feb2720 3357 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3358 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3359 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3360 }
3361 }
3362 return mg;
3363}
a863c7d1
MB
3364
3365/*
199100c8
MB
3366 * Make a new perl thread structure using t as a prototype. Some of the
3367 * fields for the new thread are copied from the prototype thread, t,
3368 * so t should not be running in perl at the time this function is
3369 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3370 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3371 */
52e1cb5e 3372struct perl_thread *
864dbfa3 3373Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3374{
c5be433b 3375#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3376 struct perl_thread *thr;
cea2e8a9 3377#endif
a863c7d1 3378 SV *sv;
199100c8
MB
3379 SV **svp;
3380 I32 i;
3381
79cb57f6 3382 sv = newSVpvn("", 0);
52e1cb5e
JH
3383 SvGROW(sv, sizeof(struct perl_thread) + 1);
3384 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3385 thr = (Thread) SvPVX(sv);
949ced2d 3386#ifdef DEBUGGING
52e1cb5e 3387 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3388 PL_markstack = 0;
3389 PL_scopestack = 0;
3390 PL_savestack = 0;
3391 PL_retstack = 0;
3392 PL_dirty = 0;
3393 PL_localizing = 0;
949ced2d
GS
3394 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3395#else
3396 Zero(thr, 1, struct perl_thread);
3397#endif
199100c8
MB
3398
3399 thr->oursv = sv;
cea2e8a9 3400 init_stacks();
a863c7d1 3401
533c011a 3402 PL_curcop = &PL_compiling;
c5be433b 3403 thr->interp = t->interp;
199100c8 3404 thr->cvcache = newHV();
54b9620d 3405 thr->threadsv = newAV();
a863c7d1 3406 thr->specific = newAV();
79cb57f6 3407 thr->errsv = newSVpvn("", 0);
a863c7d1
MB
3408 thr->flags = THRf_R_JOINABLE;
3409 MUTEX_INIT(&thr->mutex);
199100c8 3410
5c831c24 3411 JMPENV_BOOTSTRAP;
533c011a 3412
faef0170 3413 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3414 PL_restartop = 0;
3415
b099ddc0 3416 PL_statname = NEWSV(66,0);
5a844595 3417 PL_errors = newSVpvn("", 0);
b099ddc0 3418 PL_maxscream = -1;
0b94c7bb
GS
3419 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3420 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3421 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3422 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3423 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3424 PL_regindent = 0;
3425 PL_reginterp_cnt = 0;
3426 PL_lastscream = Nullsv;
3427 PL_screamfirst = 0;
3428 PL_screamnext = 0;
3429 PL_reg_start_tmp = 0;
3430 PL_reg_start_tmpl = 0;
14ed4b74 3431 PL_reg_poscache = Nullch;
b099ddc0
GS
3432
3433 /* parent thread's data needs to be locked while we make copy */
3434 MUTEX_LOCK(&t->mutex);
3435
312caa8e
CS
3436 PL_protect = t->Tprotect;
3437
b099ddc0
GS
3438 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3439 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3440 PL_curstash = t->Tcurstash; /* always be set to main? */
3441
6b88bc9c 3442 PL_tainted = t->Ttainted;
84fee439
NIS
3443 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3444 PL_nrs = newSVsv(t->Tnrs);
3445 PL_rs = SvREFCNT_inc(PL_nrs);
3446 PL_last_in_gv = Nullgv;
3447 PL_ofslen = t->Tofslen;
3448 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3449 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3450 PL_chopset = t->Tchopset;
84fee439
NIS
3451 PL_bodytarget = newSVsv(t->Tbodytarget);
3452 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS
3453 if (t->Tformtarget == t->Ttoptarget)
3454 PL_formtarget = PL_toptarget;
3455 else
3456 PL_formtarget = PL_bodytarget;
533c011a 3457
54b9620d
MB
3458 /* Initialise all per-thread SVs that the template thread used */
3459 svp = AvARRAY(t->threadsv);
93965878 3460 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3461 if (*svp && *svp != &PL_sv_undef) {
199100c8 3462 SV *sv = newSVsv(*svp);
54b9620d 3463 av_store(thr->threadsv, i, sv);
533c011a 3464 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3465 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH
3466 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3467 (IV)i, t, thr));
199100c8
MB
3468 }
3469 }
940cb80d 3470 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3471
533c011a
NIS
3472 MUTEX_LOCK(&PL_threads_mutex);
3473 PL_nthreads++;
3474 thr->tid = ++PL_threadnum;
199100c8
MB
3475 thr->next = t->next;
3476 thr->prev = t;
3477 t->next = thr;
3478 thr->next->prev = thr;
533c011a 3479 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3480
b099ddc0
GS
3481 /* done copying parent's state */
3482 MUTEX_UNLOCK(&t->mutex);
3483
a863c7d1 3484#ifdef HAVE_THREAD_INTERN
4f63d024 3485 Perl_init_thread_intern(thr);
a863c7d1 3486#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3487 return thr;
3488}
11343788 3489#endif /* USE_THREADS */
760ac839
LW
3490
3491#ifdef HUGE_VAL
3492/*
3493 * This hack is to force load of "huge" support from libm.a
3494 * So it is in perl for (say) POSIX to use.
3495 * Needed for SunOS with Sun's 'acc' for example.
3496 */
65202027 3497NV
8ac85365 3498Perl_huge(void)
760ac839
LW
3499{
3500 return HUGE_VAL;
3501}
3502#endif
4e35701f 3503
22239a37
NIS
3504#ifdef PERL_GLOBAL_STRUCT
3505struct perl_vars *
864dbfa3 3506Perl_GetVars(pTHX)
22239a37 3507{
533c011a 3508 return &PL_Vars;
22239a37 3509}
31fb1209
NIS
3510#endif
3511
3512char **
864dbfa3 3513Perl_get_op_names(pTHX)
31fb1209 3514{
22c35a8c 3515 return PL_op_name;
31fb1209
NIS
3516}
3517
3518char **
864dbfa3 3519Perl_get_op_descs(pTHX)
31fb1209 3520{
22c35a8c 3521 return PL_op_desc;
31fb1209 3522}
9e6b2b00
GS
3523
3524char *
864dbfa3 3525Perl_get_no_modify(pTHX)
9e6b2b00 3526{
22c35a8c 3527 return (char*)PL_no_modify;
9e6b2b00
GS
3528}
3529
3530U32 *
864dbfa3 3531Perl_get_opargs(pTHX)
9e6b2b00 3532{
22c35a8c 3533 return PL_opargs;
9e6b2b00 3534}
51aa15f3 3535
0cb96387
GS
3536PPADDR_t*
3537Perl_get_ppaddr(pTHX)
3538{
3539 return &PL_ppaddr;
3540}
3541
a6c40364
GS
3542#ifndef HAS_GETENV_LEN
3543char *
864dbfa3 3544Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS
3545{
3546 char *env_trans = PerlEnv_getenv(env_elem);
3547 if (env_trans)
3548 *len = strlen(env_trans);
3549 return env_trans;
f675dbe5
CB
3550}
3551#endif
3552
dc9e4912
GS
3553
3554MGVTBL*
864dbfa3 3555Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS
3556{
3557 MGVTBL* result = Null(MGVTBL*);
3558
3559 switch(vtbl_id) {
3560 case want_vtbl_sv:
3561 result = &PL_vtbl_sv;
3562 break;
3563 case want_vtbl_env:
3564 result = &PL_vtbl_env;
3565 break;
3566 case want_vtbl_envelem:
3567 result = &PL_vtbl_envelem;
3568 break;
3569 case want_vtbl_sig:
3570 result = &PL_vtbl_sig;
3571 break;
3572 case want_vtbl_sigelem:
3573 result = &PL_vtbl_sigelem;
3574 break;
3575 case want_vtbl_pack:
3576 result = &PL_vtbl_pack;
3577 break;
3578 case want_vtbl_packelem:
3579 result = &PL_vtbl_packelem;
3580 break;
3581 case want_vtbl_dbline:
3582 result = &PL_vtbl_dbline;
3583 break;
3584 case want_vtbl_isa:
3585 result = &PL_vtbl_isa;
3586 break;
3587 case want_vtbl_isaelem:
3588 result = &PL_vtbl_isaelem;
3589 break;
3590 case want_vtbl_arylen:
3591 result = &PL_vtbl_arylen;
3592 break;
3593 case want_vtbl_glob:
3594 result = &PL_vtbl_glob;
3595 break;
3596 case want_vtbl_mglob:
3597 result = &PL_vtbl_mglob;
3598 break;
3599 case want_vtbl_nkeys:
3600 result = &PL_vtbl_nkeys;
3601 break;
3602 case want_vtbl_taint:
3603 result = &PL_vtbl_taint;
3604 break;
3605 case want_vtbl_substr:
3606 result = &PL_vtbl_substr;
3607 break;
3608 case want_vtbl_vec:
3609 result = &PL_vtbl_vec;
3610 break;
3611 case want_vtbl_pos:
3612 result = &PL_vtbl_pos;
3613 break;
3614 case want_vtbl_bm:
3615 result = &PL_vtbl_bm;
3616 break;
3617 case want_vtbl_fm:
3618 result = &PL_vtbl_fm;
3619 break;
3620 case want_vtbl_uvar:
3621 result = &PL_vtbl_uvar;
3622 break;
3623#ifdef USE_THREADS