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revert change#4115 (breaks libwww's base/date.t); could be
[perl5.git] / util.c
CommitLineData
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 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 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) {
16cebae2
GS		 88 PerlIO_printf(PerlIO_stderr(),
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 */
6b88bc9c 98 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW		 99 if (ptr != Nullch)
100 return ptr;
3280af22 101 else if (PL_nomemok)
7c0587c8 102 return Nullch;
8d063cd8 103 else {
22c35a8c 104 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 105 my_exit(1);
4e35701f 106 return Nullch;
8d063cd8
LW		 107 }
108 /*NOTREACHED*/
109}
110
f2517201 111/* paranoid version of system's realloc() */
8d063cd8 112
bd4080b3 113Malloc_t
4f63d024 114Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 115{
54aff467 116 dTHX;
bd4080b3 117 Malloc_t ptr;
ecfc5424 118#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 119 Malloc_t PerlMem_realloc();
ecfc5424 120#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 121
55497cff 122#ifdef HAS_64K_LIMIT
5f05dabc 123 if (size > 0xffff) {
124 PerlIO_printf(PerlIO_stderr(),
125 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 126 my_exit(1);
5f05dabc 127 }
55497cff 128#endif /* HAS_64K_LIMIT */
7614df0c 129 if (!size) {
f2517201 130 safesysfree(where);
7614df0c
JD		 131 return NULL;
132 }
133
378cc40b 134 if (!where)
f2517201 135 return safesysmalloc(size);
34de22dd
LW		 136#ifdef DEBUGGING
137 if ((long)size < 0)
4f63d024 138 Perl_croak_nocontext("panic: realloc");
34de22dd 139#endif
7614df0c 140 ptr = PerlMem_realloc(where,size);
79072805 141
0b250b9e
GS		 142 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++));
143 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 144
8d063cd8
LW		 145 if (ptr != Nullch)
146 return ptr;
3280af22 147 else if (PL_nomemok)
7c0587c8 148 return Nullch;
8d063cd8 149 else {
22c35a8c 150 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 151 my_exit(1);
4e35701f 152 return Nullch;
8d063cd8
LW		 153 }
154 /*NOTREACHED*/
155}
156
f2517201 157/* safe version of system's free() */
8d063cd8 158
54310121 159Free_t
4f63d024 160Perl_safesysfree(Malloc_t where)
8d063cd8 161{
54aff467 162 dTHX;
6b88bc9c 163 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
378cc40b 164 if (where) {
de3bb511 165 /*SUPPRESS 701*/
6ad3d225 166 PerlMem_free(where);
378cc40b 167 }
8d063cd8
LW		 168}
169
f2517201 170/* safe version of system's calloc() */
1050c9ca 171
bd4080b3 172Malloc_t
4f63d024 173Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 174{
54aff467 175 dTHX;
bd4080b3 176 Malloc_t ptr;
1050c9ca 177
55497cff 178#ifdef HAS_64K_LIMIT
5f05dabc 179 if (size * count > 0xffff) {
180 PerlIO_printf(PerlIO_stderr(),
181 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 182 my_exit(1);
5f05dabc 183 }
55497cff 184#endif /* HAS_64K_LIMIT */
1050c9ca 185#ifdef DEBUGGING
186 if ((long)size < 0 || (long)count < 0)
4f63d024 187 Perl_croak_nocontext("panic: calloc");
1050c9ca 188#endif
0b7c1c42 189 size *= count;
6ad3d225 190 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
6b88bc9c 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca 197 return Nullch;
198 else {
22c35a8c 199 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 200 my_exit(1);
4e35701f 201 return Nullch;
1050c9ca 202 }
203 /*NOTREACHED*/
204}
205
a687059c
LW		 206#ifdef LEAKTEST
207
8c52afec
IZ		 208struct mem_test_strut {
209 union {
210 long type;
211 char c[2];
212 } u;
213 long size;
214};
215
216# define ALIGN sizeof(struct mem_test_strut)
217
218# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219# define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221# define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? MAXYCOUNT - 1 \
225 : ( (size) > 40 \
226 ? ((size) - 1)/8 + 5 \
227 : ((size) - 1)/4))
8d063cd8 228
bd4080b3 229Malloc_t
4f63d024 230Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 231{
8c52afec 232 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 233
8c52afec
IZ		 234 xcount[x] += size;
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
8d063cd8 239}
8d063cd8 240
bd4080b3 241Malloc_t
4f63d024 242Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 243{
8c52afec
IZ		 244 char *where = (char*)wh;
245
246 if (!wh)
247 return safexmalloc(0,size);
248
249 {
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
253
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
259 }
a687059c
LW		 260}
261
262void
4f63d024 263Perl_safexfree(Malloc_t wh)
a687059c 264{
79072805 265 I32 x;
8c52afec
IZ		 266 char *where = (char*)wh;
267 MEM_SIZE size;
268
a687059c
LW		 269 if (!where)
270 return;
271 where -= ALIGN;
8c52afec 272 size = sizeof_chunk(where);
a687059c 273 x = where[0] + 100 * where[1];
8c52afec
IZ		 274 xcount[x] -= size;
275 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 276 safefree(where);
277}
278
bd4080b3 279Malloc_t
4f63d024 280Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 281{
8c52afec
IZ		 282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
283 xcount[x] += size;
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
1050c9ca 289}
290
864dbfa3 291STATIC void
cea2e8a9 292S_xstat(pTHX_ int flag)
8d063cd8 293{
8c52afec
IZ		 294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
8d063cd8 296
8c52afec
IZ		 297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] = 0;
299 }
300
301 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 302 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 303 total += xcount[i];
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
306 }
307 if (flag == 0
308 ? xcount[i] /* Have something */
309 : (flag == 2
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
312 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 314 lastxcount[i] = xcount[i];
8c52afec
IZ		 315 for (j = 0; j < MAXYCOUNT; j++) {
316 if ( flag == 0
317 ? xycount[i][j] /* Have something */
318 : (flag == 2
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
321 PerlIO_printf(PerlIO_stderr(),"%3ld ",
322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
327 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
328 }
329 }
330 PerlIO_printf(PerlIO_stderr(), "\n");
331 }
332 }
333 if (flag != 2) {
334 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
337 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
338 } else {
339 PerlIO_printf(PerlIO_stderr(), " . ");
340 }
8d063cd8 341 }
8c52afec 342 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 343 }
8d063cd8 344}
a687059c
LW		 345
346#endif /* LEAKTEST */
8d063cd8
LW		 347
348/* copy a string up to some (non-backslashed) delimiter, if any */
349
350char *
864dbfa3 351Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 352{
fc36a67e 353 register I32 tolen;
354 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 355 if (*from == '\\') {
356 if (from[1] == delim)
357 from++;
fc36a67e 358 else {
359 if (to < toend)
360 *to++ = *from;
361 tolen++;
362 from++;
363 }
378cc40b 364 }
bedebaa5 365 else if (*from == delim)
8d063cd8 366 break;
fc36a67e 367 if (to < toend)
368 *to++ = *from;
8d063cd8 369 }
bedebaa5
CS		 370 if (to < toend)
371 *to = '\0';
fc36a67e 372 *retlen = tolen;
8d063cd8
LW		 373 return from;
374}
375
376/* return ptr to little string in big string, NULL if not found */
378cc40b 377/* This routine was donated by Corey Satten. */
8d063cd8
LW		 378
379char *
864dbfa3 380Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 381{
08105a92 382 register const char *s, *x;
79072805 383 register I32 first;
378cc40b 384
a687059c 385 if (!little)
08105a92 386 return (char*)big;
a687059c 387 first = *little++;
378cc40b 388 if (!first)
08105a92 389 return (char*)big;
378cc40b
LW		 390 while (*big) {
391 if (*big++ != first)
392 continue;
393 for (x=big,s=little; *s; /**/ ) {
394 if (!*x)
395 return Nullch;
396 if (*s++ != *x++) {
397 s--;
398 break;
399 }
400 }
401 if (!*s)
08105a92 402 return (char*)(big-1);
378cc40b
LW		 403 }
404 return Nullch;
405}
8d063cd8 406
a687059c
LW		 407/* same as instr but allow embedded nulls */
408
409char *
864dbfa3 410Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 411{
08105a92 412 register const char *s, *x;
79072805 413 register I32 first = *little;
08105a92 414 register const char *littleend = lend;
378cc40b 415
a0d0e21e 416 if (!first && little >= littleend)
08105a92 417 return (char*)big;
de3bb511
LW		 418 if (bigend - big < littleend - little)
419 return Nullch;
a687059c
LW		 420 bigend -= littleend - little++;
421 while (big <= bigend) {
422 if (*big++ != first)
423 continue;
424 for (x=big,s=little; s < littleend; /**/ ) {
425 if (*s++ != *x++) {
426 s--;
427 break;
428 }
429 }
430 if (s >= littleend)
08105a92 431 return (char*)(big-1);
378cc40b 432 }
a687059c
LW		 433 return Nullch;
434}
435
436/* reverse of the above--find last substring */
437
438char *
864dbfa3 439Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 440{
08105a92
GS		 441 register const char *bigbeg;
442 register const char *s, *x;
79072805 443 register I32 first = *little;
08105a92 444 register const char *littleend = lend;
a687059c 445
a0d0e21e 446 if (!first && little >= littleend)
08105a92 447 return (char*)bigend;
a687059c
LW		 448 bigbeg = big;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
451 if (*big-- != first)
452 continue;
453 for (x=big+2,s=little; s < littleend; /**/ ) {
454 if (*s++ != *x++) {
455 s--;
456 break;
457 }
458 }
459 if (s >= littleend)
08105a92 460 return (char*)(big+1);
378cc40b 461 }
a687059c 462 return Nullch;
378cc40b 463}
a687059c 464
bbce6d69 465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
864dbfa3 469Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 470{
36477c24 471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69 475 for (i = 0; i < 256; i++) {
476 if (isUPPER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 478 else if (isLOWER_LC(i))
22c35a8c 479 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 480 else
22c35a8c 481 PL_fold_locale[i] = i;
bbce6d69 482 }
bbce6d69 483
36477c24 484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69 486
487/*
488 * Set up for a new collation locale.
489 */
490void
864dbfa3 491Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 492{
36477c24 493#ifdef USE_LOCALE_COLLATE
494
bbce6d69 495 if (! newcoll) {
3280af22
NIS		 496 if (PL_collation_name) {
497 ++PL_collation_ix;
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
bbce6d69 503 }
504 return;
505 }
506
3280af22
NIS		 507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
508 ++PL_collation_ix;
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 512
bbce6d69 513 {
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516#define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
521 if (mult < 1)
cea2e8a9 522 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
bbce6d69 525 }
bbce6d69 526 }
bbce6d69 527
36477c24 528#endif /* USE_LOCALE_COLLATE */
529}
bbce6d69 530
097ee67d 531void
51371543 532Perl_set_numeric_radix(pTHX)
097ee67d
JH		 533{
534#ifdef USE_LOCALE_NUMERIC
535# ifdef HAS_LOCALECONV
536 struct lconv* lc;
537
538 lc = localeconv();
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
544 else
545 PL_numeric_radix = 0;
546# endif /* HAS_LOCALECONV */
547#else
548 PL_numeric_radix = 0;
549#endif /* USE_LOCALE_NUMERIC */
550}
551
bbce6d69 552/*
553 * Set up for a new numeric locale.
554 */
555void
864dbfa3 556Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 557{
36477c24 558#ifdef USE_LOCALE_NUMERIC
559
bbce6d69 560 if (! newnum) {
3280af22
NIS		 561 if (PL_numeric_name) {
562 Safefree(PL_numeric_name);
563 PL_numeric_name = NULL;
564 PL_numeric_standard = TRUE;
565 PL_numeric_local = TRUE;
bbce6d69 566 }
567 return;
568 }
569
3280af22
NIS		 570 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
571 Safefree(PL_numeric_name);
572 PL_numeric_name = savepv(newnum);
573 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
574 PL_numeric_local = TRUE;
51371543 575 set_numeric_radix();
bbce6d69 576 }
36477c24 577
578#endif /* USE_LOCALE_NUMERIC */
bbce6d69 579}
580
581void
864dbfa3 582Perl_set_numeric_standard(pTHX)
bbce6d69 583{
5f05dabc 584#ifdef USE_LOCALE_NUMERIC
585
3280af22 586 if (! PL_numeric_standard) {
bbce6d69 587 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 588 PL_numeric_standard = TRUE;
589 PL_numeric_local = FALSE;
bbce6d69 590 }
5f05dabc 591
592#endif /* USE_LOCALE_NUMERIC */
bbce6d69 593}
594
595void
864dbfa3 596Perl_set_numeric_local(pTHX)
bbce6d69 597{
5f05dabc 598#ifdef USE_LOCALE_NUMERIC
599
3280af22
NIS		 600 if (! PL_numeric_local) {
601 setlocale(LC_NUMERIC, PL_numeric_name);
602 PL_numeric_standard = FALSE;
603 PL_numeric_local = TRUE;
51371543 604 set_numeric_radix();
bbce6d69 605 }
bbce6d69 606
36477c24 607#endif /* USE_LOCALE_NUMERIC */
5f05dabc 608}
36477c24 609
36477c24 610/*
611 * Initialize locale awareness.
612 */
f0c5b223 613int
864dbfa3 614Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 615{
616 int ok = 1;
617 /* returns
618 * 1 = set ok or not applicable,
619 * 0 = fallback to C locale,
620 * -1 = fallback to C locale failed
621 */
bbce6d69 622
36477c24 623#ifdef USE_LOCALE
bbce6d69 624
36477c24 625#ifdef USE_LOCALE_CTYPE
bbce6d69 626 char *curctype = NULL;
36477c24 627#endif /* USE_LOCALE_CTYPE */
628#ifdef USE_LOCALE_COLLATE
bbce6d69 629 char *curcoll = NULL;
36477c24 630#endif /* USE_LOCALE_COLLATE */
631#ifdef USE_LOCALE_NUMERIC
bbce6d69 632 char *curnum = NULL;
36477c24 633#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 634#ifdef __GLIBC__
635 char *language = PerlEnv_getenv("LANGUAGE");
636#endif
76e3520e
GS		 637 char *lc_all = PerlEnv_getenv("LC_ALL");
638 char *lang = PerlEnv_getenv("LANG");
bbce6d69 639 bool setlocale_failure = FALSE;
f0c5b223 640
02b32252
CS		 641#ifdef LOCALE_ENVIRON_REQUIRED
642
643 /*
644 * Ultrix setlocale(..., "") fails if there are no environment
645 * variables from which to get a locale name.
646 */
647
648 bool done = FALSE;
649
650#ifdef LC_ALL
651 if (lang) {
652 if (setlocale(LC_ALL, ""))
653 done = TRUE;
654 else
655 setlocale_failure = TRUE;
656 }
0644c9cb 657 if (!setlocale_failure) {
02b32252 658#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 659 if (! (curctype =
660 setlocale(LC_CTYPE,
661 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_CTYPE */
665#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 666 if (! (curcoll =
667 setlocale(LC_COLLATE,
668 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 669 ? "" : Nullch)))
670 setlocale_failure = TRUE;
671#endif /* USE_LOCALE_COLLATE */
672#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 673 if (! (curnum =
674 setlocale(LC_NUMERIC,
675 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 676 ? "" : Nullch)))
677 setlocale_failure = TRUE;
678#endif /* USE_LOCALE_NUMERIC */
679 }
680
0644c9cb 681#endif /* LC_ALL */
02b32252 682
0644c9cb 683#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 684
0644c9cb 685#ifdef LC_ALL
bbce6d69 686 if (! setlocale(LC_ALL, ""))
687 setlocale_failure = TRUE;
0644c9cb 688#endif /* LC_ALL */
bbce6d69 689
0644c9cb 690 if (!setlocale_failure) {
36477c24 691#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 692 if (! (curctype = setlocale(LC_CTYPE, "")))
693 setlocale_failure = TRUE;
36477c24 694#endif /* USE_LOCALE_CTYPE */
695#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 696 if (! (curcoll = setlocale(LC_COLLATE, "")))
697 setlocale_failure = TRUE;
36477c24 698#endif /* USE_LOCALE_COLLATE */
699#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 700 if (! (curnum = setlocale(LC_NUMERIC, "")))
701 setlocale_failure = TRUE;
36477c24 702#endif /* USE_LOCALE_NUMERIC */
0644c9cb 703 }
02b32252 704
5f05dabc 705 if (setlocale_failure) {
706 char *p;
707 bool locwarn = (printwarn > 1 ||
708 printwarn &&
76e3520e 709 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 710
5f05dabc 711 if (locwarn) {
712#ifdef LC_ALL
713
714 PerlIO_printf(PerlIO_stderr(),
715 "perl: warning: Setting locale failed.\n");
716
717#else /* !LC_ALL */
718
ef7eada9 719 PerlIO_printf(PerlIO_stderr(),
bbce6d69 720 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 721#ifdef USE_LOCALE_CTYPE
bbce6d69 722 if (! curctype)
5f05dabc 723 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24 724#endif /* USE_LOCALE_CTYPE */
725#ifdef USE_LOCALE_COLLATE
bbce6d69 726 if (! curcoll)
5f05dabc 727 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24 728#endif /* USE_LOCALE_COLLATE */
729#ifdef USE_LOCALE_NUMERIC
bbce6d69 730 if (! curnum)
5f05dabc 731 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 732#endif /* USE_LOCALE_NUMERIC */
bbce6d69 733 PerlIO_printf(PerlIO_stderr(), "\n");
734
5f05dabc 735#endif /* LC_ALL */
736
760ac839 737 PerlIO_printf(PerlIO_stderr(),
bbce6d69 738 "perl: warning: Please check that your locale settings:\n");
ef7eada9 739
3aeabbed
JH		 740#ifdef __GLIBC__
741 PerlIO_printf(PerlIO_stderr(),
742 "\tLANGUAGE = %c%s%c,\n",
743 language ? '"' : '(',
744 language ? language : "unset",
745 language ? '"' : ')');
746#endif
747
ef7eada9 748 PerlIO_printf(PerlIO_stderr(),
bbce6d69 749 "\tLC_ALL = %c%s%c,\n",
750 lc_all ? '"' : '(',
751 lc_all ? lc_all : "unset",
752 lc_all ? '"' : ')');
5f05dabc 753
754 {
755 char **e;
756 for (e = environ; *e; e++) {
757 if (strnEQ(*e, "LC_", 3)
758 && strnNE(*e, "LC_ALL=", 7)
759 && (p = strchr(*e, '=')))
760 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 761 (int)(p - *e), *e, p + 1);
5f05dabc 762 }
763 }
764
ef7eada9 765 PerlIO_printf(PerlIO_stderr(),
bbce6d69 766 "\tLANG = %c%s%c\n",
5f05dabc 767 lang ? '"' : '(',
bbce6d69 768 lang ? lang : "unset",
769 lang ? '"' : ')');
ef7eada9 770
bbce6d69 771 PerlIO_printf(PerlIO_stderr(),
772 " are supported and installed on your system.\n");
5f05dabc 773 }
ef7eada9 774
5f05dabc 775#ifdef LC_ALL
776
777 if (setlocale(LC_ALL, "C")) {
778 if (locwarn)
779 PerlIO_printf(PerlIO_stderr(),
780 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 781 ok = 0;
ef7eada9 782 }
5f05dabc 783 else {
784 if (locwarn)
785 PerlIO_printf(PerlIO_stderr(),
786 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
787 ok = -1;
788 }
bbce6d69 789
5f05dabc 790#else /* ! LC_ALL */
791
792 if (0
36477c24 793#ifdef USE_LOCALE_CTYPE
5f05dabc 794 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 795#endif /* USE_LOCALE_CTYPE */
796#ifdef USE_LOCALE_COLLATE
5f05dabc 797 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 798#endif /* USE_LOCALE_COLLATE */
799#ifdef USE_LOCALE_NUMERIC
5f05dabc 800 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 801#endif /* USE_LOCALE_NUMERIC */
5f05dabc 802 )
803 {
804 if (locwarn)
bbce6d69 805 PerlIO_printf(PerlIO_stderr(),
5f05dabc 806 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
807 ok = -1;
bbce6d69 808 }
5f05dabc 809
bbce6d69 810#endif /* ! LC_ALL */
5f05dabc 811
812#ifdef USE_LOCALE_CTYPE
813 curctype = setlocale(LC_CTYPE, Nullch);
814#endif /* USE_LOCALE_CTYPE */
815#ifdef USE_LOCALE_COLLATE
816 curcoll = setlocale(LC_COLLATE, Nullch);
817#endif /* USE_LOCALE_COLLATE */
818#ifdef USE_LOCALE_NUMERIC
819 curnum = setlocale(LC_NUMERIC, Nullch);
820#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 821 }
822
36477c24 823#ifdef USE_LOCALE_CTYPE
864dbfa3 824 new_ctype(curctype);
36477c24 825#endif /* USE_LOCALE_CTYPE */
bbce6d69 826
36477c24 827#ifdef USE_LOCALE_COLLATE
864dbfa3 828 new_collate(curcoll);
36477c24 829#endif /* USE_LOCALE_COLLATE */
bbce6d69 830
36477c24 831#ifdef USE_LOCALE_NUMERIC
864dbfa3 832 new_numeric(curnum);
36477c24 833#endif /* USE_LOCALE_NUMERIC */
ef7eada9 834
36477c24 835#endif /* USE_LOCALE */
ef7eada9 836
f0c5b223
TB		 837 return ok;
838}
839
bbce6d69 840/* Backwards compatibility. */
841int
864dbfa3 842Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 843{
864dbfa3 844 return init_i18nl10n(printwarn);
bbce6d69 845}
ef7eada9 846
36477c24 847#ifdef USE_LOCALE_COLLATE
ef7eada9 848
bbce6d69 849/*
850 * mem_collxfrm() is a bit like strxfrm() but with two important
851 * differences. First, it handles embedded NULs. Second, it allocates
852 * a bit more memory than needed for the transformed data itself.
853 * The real transformed data begins at offset sizeof(collationix).
854 * Please see sv_collxfrm() to see how this is used.
855 */
856char *
864dbfa3 857Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 858{
859 char *xbuf;
76e3520e 860 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 861
862 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
863 /* the +1 is for the terminating NUL. */
864
3280af22 865 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 866 New(171, xbuf, xAlloc, char);
bbce6d69 867 if (! xbuf)
868 goto bad;
869
3280af22
NIS		 870 *(U32*)xbuf = PL_collation_ix;
871 xout = sizeof(PL_collation_ix);
bbce6d69 872 for (xin = 0; xin < len; ) {
873 SSize_t xused;
874
875 for (;;) {
76e3520e 876 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 877 if (xused == -1)
878 goto bad;
76e3520e 879 if (xused < xAlloc - xout)
bbce6d69 880 break;
76e3520e
GS		 881 xAlloc = (2 * xAlloc) + 1;
882 Renew(xbuf, xAlloc, char);
bbce6d69 883 if (! xbuf)
884 goto bad;
885 }
ef7eada9 886
bbce6d69 887 xin += strlen(s + xin) + 1;
888 xout += xused;
889
890 /* Embedded NULs are understood but silently skipped
891 * because they make no sense in locale collation. */
892 }
ef7eada9 893
bbce6d69 894 xbuf[xout] = '\0';
3280af22 895 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 896 return xbuf;
897
898 bad:
899 Safefree(xbuf);
900 *xlen = 0;
901 return NULL;
ef7eada9
JH		 902}
903
36477c24 904#endif /* USE_LOCALE_COLLATE */
bbce6d69 905
cf93c79d
IZ		 906#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
907
908/* As a space optimization, we do not compile tables for strings of length
909 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
910 special-cased in fbm_instr().
911
912 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
913
378cc40b 914void
864dbfa3 915Perl_fbm_compile(pTHX_ SV *sv, U32 flags /* not used yet */)
378cc40b 916{
942e002e
GS		 917 register U8 *s;
918 register U8 *table;
79072805 919 register U32 i;
0b71040e 920 STRLEN len;
79072805
LW		 921 I32 rarest = 0;
922 U32 frequency = 256;
923
cf93c79d
IZ		 924 if (flags & FBMcf_TAIL)
925 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 926 s = (U8*)SvPV_force(sv, len);
07f14f54 927 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 928 if (len == 0) /* TAIL might be on on a zero-length string. */
929 return;
02128f11 930 if (len > 2) {
cf93c79d
IZ		 931 I32 mlen = len;
932 unsigned char *sb;
933
934 if (mlen > 255)
935 mlen = 255;
936 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
937 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
938 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
02128f11 939 for (i = 0; i < 256; i++) {
cf93c79d 940 table[i] = mlen;
02128f11 941 }
cf93c79d 942 table[-1] = flags; /* Not used yet */
02128f11 943 i = 0;
cf93c79d
IZ		 944 sb = s - mlen;
945 while (s >= sb) {
946 if (table[*s] == mlen)
947 table[*s] = i;
948 s--, i++;
949 }
378cc40b 950 }
bbce6d69 951 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 952 SvVALID_on(sv);
378cc40b 953
463ee0b2 954 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 955 for (i = 0; i < len; i++) {
22c35a8c 956 if (PL_freq[s[i]] < frequency) {
bbce6d69 957 rarest = i;
22c35a8c 958 frequency = PL_freq[s[i]];
378cc40b
LW		 959 }
960 }
79072805
LW		 961 BmRARE(sv) = s[rarest];
962 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 963 BmUSEFUL(sv) = 100; /* Initial value */
964 if (flags & FBMcf_TAIL)
965 SvTAIL_on(sv);
760ac839 966 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 967}
968
cf93c79d
IZ		 969/* If SvTAIL(littlestr), it has a fake '\n' at end. */
970/* If SvTAIL is actually due to \Z or \z, this gives false positives
971 if multiline */
972
378cc40b 973char *
864dbfa3 974Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 975{
a687059c 976 register unsigned char *s;
cf93c79d
IZ		 977 STRLEN l;
978 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
979 register STRLEN littlelen = l;
980 register I32 multiline = flags & FBMrf_MULTILINE;
981
982 if (bigend - big < littlelen) {
983 check_tail:
984 if ( SvTAIL(littlestr)
985 && (bigend - big == littlelen - 1)
986 && (littlelen == 1
987 || *big == *little && memEQ(big, little, littlelen - 1)))
988 return (char*)big;
989 return Nullch;
990 }
378cc40b 991
cf93c79d
IZ		 992 if (littlelen <= 2) { /* Special-cased */
993 register char c;
994
995 if (littlelen == 1) {
996 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
997 /* Know that bigend != big. */
998 if (bigend[-1] == '\n')
999 return (char *)(bigend - 1);
1000 return (char *) bigend;
1001 }
1002 s = big;
1003 while (s < bigend) {
1004 if (*s == *little)
1005 return (char *)s;
1006 s++;
1007 }
1008 if (SvTAIL(littlestr))
1009 return (char *) bigend;
1010 return Nullch;
1011 }
1012 if (!littlelen)
1013 return (char*)big; /* Cannot be SvTAIL! */
1014
1015 /* littlelen is 2 */
1016 if (SvTAIL(littlestr) && !multiline) {
1017 if (bigend[-1] == '\n' && bigend[-2] == *little)
1018 return (char*)bigend - 2;
1019 if (bigend[-1] == *little)
1020 return (char*)bigend - 1;
1021 return Nullch;
1022 }
1023 {
1024 /* This should be better than FBM if c1 == c2, and almost
1025 as good otherwise: maybe better since we do less indirection.
1026 And we save a lot of memory by caching no table. */
1027 register unsigned char c1 = little[0];
1028 register unsigned char c2 = little[1];
1029
1030 s = big + 1;
1031 bigend--;
1032 if (c1 != c2) {
1033 while (s <= bigend) {
1034 if (s[0] == c2) {
1035 if (s[-1] == c1)
1036 return (char*)s - 1;
1037 s += 2;
1038 continue;
3fe6f2dc 1039 }
cf93c79d
IZ		 1040 next_chars:
1041 if (s[0] == c1) {
1042 if (s == bigend)
1043 goto check_1char_anchor;
1044 if (s[1] == c2)
1045 return (char*)s;
1046 else {
1047 s++;
1048 goto next_chars;
1049 }
1050 }
1051 else
1052 s += 2;
1053 }
1054 goto check_1char_anchor;
1055 }
1056 /* Now c1 == c2 */
1057 while (s <= bigend) {
1058 if (s[0] == c1) {
1059 if (s[-1] == c1)
1060 return (char*)s - 1;
1061 if (s == bigend)
1062 goto check_1char_anchor;
1063 if (s[1] == c1)
1064 return (char*)s;
1065 s += 3;
02128f11 1066 }
c277df42 1067 else
cf93c79d 1068 s += 2;
c277df42 1069 }
c277df42 1070 }
cf93c79d
IZ		 1071 check_1char_anchor: /* One char and anchor! */
1072 if (SvTAIL(littlestr) && (*bigend == *little))
1073 return (char *)bigend; /* bigend is already decremented. */
1074 return Nullch;
d48672a2 1075 }
cf93c79d 1076 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1077 s = bigend - littlelen;
cf93c79d 1078 if (s >= big
02128f11 1079 && bigend[-1] == '\n'
cf93c79d
IZ		 1080 && *s == *little
1081 /* Automatically of length > 2 */
1082 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
bbce6d69 1083 return (char*)s; /* how sweet it is */
cf93c79d
IZ		 1084 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1085 littlelen - 2))
1086 return (char*)s + 1; /* how sweet it is */
02128f11
IZ		 1087 return Nullch;
1088 }
cf93c79d
IZ		 1089 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1090 char *b = ninstr((char*)big,(char*)bigend,
1091 (char*)little, (char*)little + littlelen);
1092
1093 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1094 /* Chop \n from littlestr: */
1095 s = bigend - littlelen + 1;
1096 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1097 littlelen - 2))
3fe6f2dc 1098 return (char*)s;
cf93c79d 1099 return Nullch;
a687059c 1100 }
cf93c79d 1101 return b;
a687059c 1102 }
cf93c79d
IZ		 1103
1104 { /* Do actual FBM. */
1105 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1106 register unsigned char *oldlittle;
1107
1108 if (littlelen > bigend - big)
1109 return Nullch;
1110 --littlelen; /* Last char found by table lookup */
1111
1112 s = big + littlelen;
1113 little += littlelen; /* last char */
1114 oldlittle = little;
1115 if (s < bigend) {
1116 register I32 tmp;
1117
1118 top2:
1119 /*SUPPRESS 560*/
1120 if (tmp = table[*s]) {
62b28dd9 1121#ifdef POINTERRIGOR
cf93c79d
IZ		 1122 if (bigend - s > tmp) {
1123 s += tmp;
1124 goto top2;
1125 }
bbce6d69 1126 s += tmp;
62b28dd9 1127#else
cf93c79d 1128 if ((s += tmp) < bigend)
62b28dd9 1129 goto top2;
cf93c79d
IZ		 1130#endif
1131 goto check_end;
1132 }
1133 else { /* less expensive than calling strncmp() */
1134 register unsigned char *olds = s;
1135
1136 tmp = littlelen;
1137
1138 while (tmp--) {
1139 if (*--s == *--little)
1140 continue;
1141 differ:
1142 s = olds + 1; /* here we pay the price for failure */
1143 little = oldlittle;
1144 if (s < bigend) /* fake up continue to outer loop */
1145 goto top2;
1146 goto check_end;
1147 }
1148 return (char *)s;
a687059c 1149 }
378cc40b 1150 }
cf93c79d
IZ		 1151 check_end:
1152 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1153 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1154 return (char*)bigend - littlelen;
1155 return Nullch;
378cc40b 1156 }
378cc40b
LW		 1157}
1158
c277df42
IZ		 1159/* start_shift, end_shift are positive quantities which give offsets
1160 of ends of some substring of bigstr.
1161 If `last' we want the last occurence.
1162 old_posp is the way of communication between consequent calls if
1163 the next call needs to find the .
1164 The initial *old_posp should be -1.
cf93c79d
IZ		 1165
1166 Note that we take into account SvTAIL, so one can get extra
1167 optimizations if _ALL flag is set.
c277df42
IZ		 1168 */
1169
cf93c79d
IZ		 1170/* If SvTAIL is actually due to \Z or \z, this gives false positives
1171 if PL_multiline. In fact if !PL_multiline the autoritative answer
1172 is not supported yet. */
1173
378cc40b 1174char *
864dbfa3 1175Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1176{
5c0ca799 1177 dTHR;
a687059c
LW		 1178 register unsigned char *s, *x;
1179 register unsigned char *big;
79072805
LW		 1180 register I32 pos;
1181 register I32 previous;
1182 register I32 first;
a687059c 1183 register unsigned char *little;
c277df42 1184 register I32 stop_pos;
a687059c 1185 register unsigned char *littleend;
c277df42 1186 I32 found = 0;
378cc40b 1187
c277df42 1188 if (*old_posp == -1
3280af22 1189 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1190 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1191 cant_find:
1192 if ( BmRARE(littlestr) == '\n'
1193 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1194 little = (unsigned char *)(SvPVX(littlestr));
1195 littleend = little + SvCUR(littlestr);
1196 first = *little++;
1197 goto check_tail;
1198 }
378cc40b 1199 return Nullch;
cf93c79d
IZ		 1200 }
1201
463ee0b2 1202 little = (unsigned char *)(SvPVX(littlestr));
79072805 1203 littleend = little + SvCUR(littlestr);
378cc40b 1204 first = *little++;
c277df42 1205 /* The value of pos we can start at: */
79072805 1206 previous = BmPREVIOUS(littlestr);
463ee0b2 1207 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1208 /* The value of pos we can stop at: */
1209 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1210 if (previous + start_shift > stop_pos) {
1211 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1212 goto check_tail;
1213 return Nullch;
1214 }
c277df42 1215 while (pos < previous + start_shift) {
3280af22 1216 if (!(pos += PL_screamnext[pos]))
cf93c79d 1217 goto cant_find;
378cc40b 1218 }
de3bb511 1219#ifdef POINTERRIGOR
bbce6d69 1220 do {
ef64f398 1221 if (pos >= stop_pos) break;
bbce6d69 1222 if (big[pos-previous] != first)
1223 continue;
1224 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1225 if (*s++ != *x++) {
1226 s--;
1227 break;
de3bb511 1228 }
bbce6d69 1229 }
c277df42
IZ		 1230 if (s == littleend) {
1231 *old_posp = pos;
1232 if (!last) return (char *)(big+pos-previous);
1233 found = 1;
1234 }
6b88bc9c 1235 } while ( pos += PL_screamnext[pos] );
c277df42 1236 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1237#else /* !POINTERRIGOR */
1238 big -= previous;
bbce6d69 1239 do {
ef64f398 1240 if (pos >= stop_pos) break;
bbce6d69 1241 if (big[pos] != first)
1242 continue;
1243 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1244 if (*s++ != *x++) {
1245 s--;
1246 break;
378cc40b 1247 }
bbce6d69 1248 }
c277df42
IZ		 1249 if (s == littleend) {
1250 *old_posp = pos;
1251 if (!last) return (char *)(big+pos);
1252 found = 1;
1253 }
3280af22 1254 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1255 if (last && found)
1256 return (char *)(big+(*old_posp));
de3bb511 1257#endif /* POINTERRIGOR */
cf93c79d
IZ		 1258 check_tail:
1259 if (!SvTAIL(littlestr) || (end_shift > 0))
1260 return Nullch;
1261 /* Ignore the trailing "\n". This code is not microoptimized */
1262 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1263 stop_pos = littleend - little; /* Actual littlestr len */
1264 if (stop_pos == 0)
1265 return (char*)big;
1266 big -= stop_pos;
1267 if (*big == first
1268 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1269 return (char*)big;
1270 return Nullch;
8d063cd8
LW		 1271}
1272
79072805 1273I32
864dbfa3 1274Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1275{
bbce6d69 1276 register U8 *a = (U8 *)s1;
1277 register U8 *b = (U8 *)s2;
79072805 1278 while (len--) {
22c35a8c 1279 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1280 return 1;
1281 a++,b++;
1282 }
1283 return 0;
1284}
1285
1286I32
864dbfa3 1287Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1288{
1289 register U8 *a = (U8 *)s1;
1290 register U8 *b = (U8 *)s2;
1291 while (len--) {
22c35a8c 1292 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1293 return 1;
1294 a++,b++;
79072805
LW		 1295 }
1296 return 0;
1297}
1298
8d063cd8
LW		 1299/* copy a string to a safe spot */
1300
1301char *
864dbfa3 1302Perl_savepv(pTHX_ const char *sv)
8d063cd8 1303{
a687059c 1304 register char *newaddr;
8d063cd8 1305
79072805
LW		 1306 New(902,newaddr,strlen(sv)+1,char);
1307 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1308 return newaddr;
1309}
1310
a687059c
LW		 1311/* same thing but with a known length */
1312
1313char *
864dbfa3 1314Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1315{
1316 register char *newaddr;
1317
1318 New(903,newaddr,len+1,char);
79072805 1319 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1320 newaddr[len] = '\0'; /* is now */
1321 return newaddr;
1322}
1323
cea2e8a9 1324/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1325
76e3520e 1326STATIC SV *
cea2e8a9 1327S_mess_alloc(pTHX)
fc36a67e 1328{
e72dc28c 1329 dTHR;
fc36a67e 1330 SV *sv;
1331 XPVMG *any;
1332
e72dc28c
GS		 1333 if (!PL_dirty)
1334 return sv_2mortal(newSVpvn("",0));
1335
0372dbb6
GS		 1336 if (PL_mess_sv)
1337 return PL_mess_sv;
1338
fc36a67e 1339 /* Create as PVMG now, to avoid any upgrading later */
1340 New(905, sv, 1, SV);
1341 Newz(905, any, 1, XPVMG);
1342 SvFLAGS(sv) = SVt_PVMG;
1343 SvANY(sv) = (void*)any;
1344 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1345 PL_mess_sv = sv;
fc36a67e 1346 return sv;
1347}
1348
c5be433b 1349#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1350char *
1351Perl_form_nocontext(const char* pat, ...)
1352{
1353 dTHX;
c5be433b 1354 char *retval;
cea2e8a9
GS		 1355 va_list args;
1356 va_start(args, pat);
c5be433b 1357 retval = vform(pat, &args);
cea2e8a9 1358 va_end(args);
c5be433b 1359 return retval;
cea2e8a9 1360}
c5be433b 1361#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1362
8990e307 1363char *
864dbfa3 1364Perl_form(pTHX_ const char* pat, ...)
8990e307 1365{
c5be433b 1366 char *retval;
46fc3d4c 1367 va_list args;
46fc3d4c 1368 va_start(args, pat);
c5be433b 1369 retval = vform(pat, &args);
46fc3d4c 1370 va_end(args);
c5be433b
GS		 1371 return retval;
1372}
1373
1374char *
1375Perl_vform(pTHX_ const char *pat, va_list *args)
1376{
1377 SV *sv = mess_alloc();
1378 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1379 return SvPVX(sv);
46fc3d4c 1380}
a687059c 1381
5a844595
GS		 1382#if defined(PERL_IMPLICIT_CONTEXT)
1383SV *
1384Perl_mess_nocontext(const char *pat, ...)
1385{
1386 dTHX;
1387 SV *retval;
1388 va_list args;
1389 va_start(args, pat);
1390 retval = vmess(pat, &args);
1391 va_end(args);
1392 return retval;
1393}
1394#endif /* PERL_IMPLICIT_CONTEXT */
1395
06bf62c7 1396SV *
5a844595
GS		 1397Perl_mess(pTHX_ const char *pat, ...)
1398{
1399 SV *retval;
1400 va_list args;
1401 va_start(args, pat);
1402 retval = vmess(pat, &args);
1403 va_end(args);
1404 return retval;
1405}
1406
1407SV *
1408Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1409{
e72dc28c 1410 SV *sv = mess_alloc();
46fc3d4c 1411 static char dgd[] = " during global destruction.\n";
1412
fc36a67e 1413 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1414 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1415 dTHR;
cf2093f6 1416#ifdef IV_IS_QUAD
b9c39e73 1417 if (PL_curcop->cop_line)
cf2093f6
JH		 1418 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1419 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1420#else
b9c39e73 1421 if (PL_curcop->cop_line)
cea2e8a9 1422 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1423 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1424#endif
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');
cf2093f6
JH		 1428#ifdef IV_IS_QUAD
1429 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1430 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1431 line_mode ? "line" : "chunk",
1432 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1433#else
cea2e8a9 1434 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS		 1435 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1436 line_mode ? "line" : "chunk",
1437 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1438#endif
a687059c 1439 }
9efbc0eb 1440#ifdef USE_THREADS
e8e6f333
GS		 1441 if (thr->tid)
1442 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1443#endif
515f54a1 1444 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1445 }
06bf62c7 1446 return sv;
a687059c
LW		 1447}
1448
c5be433b
GS		 1449OP *
1450Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1451{
5dc0d613 1452 dTHR;
36477c24 1453 char *message;
3280af22 1454 int was_in_eval = PL_in_eval;
36477c24 1455 HV *stash;
1456 GV *gv;
1457 CV *cv;
06bf62c7
GS		 1458 SV *msv;
1459 STRLEN msglen;
36477c24 1460
8b73bbec 1461 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1462 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1463 thr, PL_curstack, PL_mainstack));
36477c24 1464
06bf62c7 1465 if (pat) {
5a844595
GS		 1466 msv = vmess(pat, args);
1467 if (PL_errors && SvCUR(PL_errors)) {
1468 sv_catsv(PL_errors, msv);
1469 message = SvPV(PL_errors, msglen);
1470 SvCUR_set(PL_errors, 0);
1471 }
1472 else
1473 message = SvPV(msv,msglen);
06bf62c7
GS		 1474 }
1475 else {
1476 message = Nullch;
1477 }
36477c24 1478
8b73bbec 1479 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1480 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1481 thr, message, PL_diehook));
3280af22 1482 if (PL_diehook) {
cea2e8a9 1483 /* sv_2cv might call Perl_croak() */
3280af22 1484 SV *olddiehook = PL_diehook;
1738f5c4 1485 ENTER;
3280af22
NIS		 1486 SAVESPTR(PL_diehook);
1487 PL_diehook = Nullsv;
1738f5c4
CS		 1488 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1489 LEAVE;
1490 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1491 dSP;
774d564b 1492 SV *msg;
1493
1494 ENTER;
79cb57f6 1495 if (message) {
06bf62c7 1496 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1497 SvREADONLY_on(msg);
1498 SAVEFREESV(msg);
1499 }
1500 else {
1501 msg = ERRSV;
1502 }
1738f5c4 1503
e788e7d3 1504 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1505 PUSHMARK(SP);
1738f5c4
CS		 1506 XPUSHs(msg);
1507 PUTBACK;
a7c6d244
NIS		 1508 /* HACK - REVISIT - avoid CATCH_SET(TRUE) in call_sv()
1509 or we come back here due to a JMPENV_JMP() and do
1510 a POPSTACK - but die_where() will have already done
1511 one as it unwound - NI-S 1999/08/14 */
1512 call_sv((SV*)cv, G_DISCARD|G_NOCATCH);
d3acc0f7 1513 POPSTACK;
774d564b 1514 LEAVE;
1738f5c4 1515 }
36477c24 1516 }
1517
06bf62c7 1518 PL_restartop = die_where(message, msglen);
8b73bbec 1519 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1520 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1521 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1522 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1523 JMPENV_JUMP(3);
3280af22 1524 return PL_restartop;
36477c24 1525}
1526
c5be433b 1527#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1528OP *
1529Perl_die_nocontext(const char* pat, ...)
a687059c 1530{
cea2e8a9
GS		 1531 dTHX;
1532 OP *o;
a687059c 1533 va_list args;
cea2e8a9 1534 va_start(args, pat);
c5be433b 1535 o = vdie(pat, &args);
cea2e8a9
GS		 1536 va_end(args);
1537 return o;
1538}
c5be433b 1539#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1540
1541OP *
1542Perl_die(pTHX_ const char* pat, ...)
1543{
1544 OP *o;
1545 va_list args;
1546 va_start(args, pat);
c5be433b 1547 o = vdie(pat, &args);
cea2e8a9
GS		 1548 va_end(args);
1549 return o;
1550}
1551
c5be433b
GS		 1552void
1553Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1554{
1555 dTHR;
de3bb511 1556 char *message;
748a9306
LW		 1557 HV *stash;
1558 GV *gv;
1559 CV *cv;
06bf62c7
GS		 1560 SV *msv;
1561 STRLEN msglen;
a687059c 1562
5a844595
GS		 1563 msv = vmess(pat, args);
1564 if (PL_errors && SvCUR(PL_errors)) {
1565 sv_catsv(PL_errors, msv);
1566 message = SvPV(PL_errors, msglen);
1567 SvCUR_set(PL_errors, 0);
1568 }
1569 else
1570 message = SvPV(msv,msglen);
1571
1572 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s",
1573 (unsigned long) thr, message));
1574
3280af22 1575 if (PL_diehook) {
cea2e8a9 1576 /* sv_2cv might call Perl_croak() */
3280af22 1577 SV *olddiehook = PL_diehook;
1738f5c4 1578 ENTER;
3280af22
NIS		 1579 SAVESPTR(PL_diehook);
1580 PL_diehook = Nullsv;
20cec16a 1581 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1582 LEAVE;
1583 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1584 dSP;
774d564b 1585 SV *msg;
1586
1587 ENTER;
06bf62c7 1588 msg = newSVpvn(message, msglen);
774d564b 1589 SvREADONLY_on(msg);
1590 SAVEFREESV(msg);
20cec16a 1591
e788e7d3 1592 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1593 PUSHMARK(SP);
1738f5c4 1594 XPUSHs(msg);
20cec16a 1595 PUTBACK;
864dbfa3 1596 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1597 POPSTACK;
774d564b 1598 LEAVE;
20cec16a 1599 }
748a9306 1600 }
3280af22 1601 if (PL_in_eval) {
06bf62c7 1602 PL_restartop = die_where(message, msglen);
6224f72b 1603 JMPENV_JUMP(3);
a0d0e21e 1604 }
d175a3f0
GS		 1605 {
1606#ifdef USE_SFIO
1607 /* SFIO can really mess with your errno */
1608 int e = errno;
1609#endif
06bf62c7 1610 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS		 1611 (void)PerlIO_flush(PerlIO_stderr());
1612#ifdef USE_SFIO
1613 errno = e;
1614#endif
1615 }
f86702cc 1616 my_failure_exit();
a687059c
LW		 1617}
1618
c5be433b 1619#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1620void
cea2e8a9 1621Perl_croak_nocontext(const char *pat, ...)
a687059c 1622{
cea2e8a9 1623 dTHX;
a687059c 1624 va_list args;
cea2e8a9 1625 va_start(args, pat);
c5be433b 1626 vcroak(pat, &args);
cea2e8a9
GS		 1627 /* NOTREACHED */
1628 va_end(args);
1629}
1630#endif /* PERL_IMPLICIT_CONTEXT */
1631
1632void
1633Perl_croak(pTHX_ const char *pat, ...)
1634{
1635 va_list args;
1636 va_start(args, pat);
c5be433b 1637 vcroak(pat, &args);
cea2e8a9
GS		 1638 /* NOTREACHED */
1639 va_end(args);
1640}
1641
c5be433b
GS		 1642void
1643Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1644{
de3bb511 1645 char *message;
748a9306
LW		 1646 HV *stash;
1647 GV *gv;
1648 CV *cv;
06bf62c7
GS		 1649 SV *msv;
1650 STRLEN msglen;
a687059c 1651
5a844595 1652 msv = vmess(pat, args);
06bf62c7 1653 message = SvPV(msv, msglen);
a687059c 1654
3280af22 1655 if (PL_warnhook) {
cea2e8a9 1656 /* sv_2cv might call Perl_warn() */
11343788 1657 dTHR;
3280af22 1658 SV *oldwarnhook = PL_warnhook;
1738f5c4 1659 ENTER;
3280af22
NIS		 1660 SAVESPTR(PL_warnhook);
1661 PL_warnhook = Nullsv;
20cec16a 1662 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1663 LEAVE;
1664 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1665 dSP;
774d564b 1666 SV *msg;
1667
1668 ENTER;
06bf62c7 1669 msg = newSVpvn(message, msglen);
774d564b 1670 SvREADONLY_on(msg);
1671 SAVEFREESV(msg);
1672
e788e7d3 1673 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1674 PUSHMARK(SP);
774d564b 1675 XPUSHs(msg);
20cec16a 1676 PUTBACK;
864dbfa3 1677 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1678 POPSTACK;
774d564b 1679 LEAVE;
20cec16a 1680 return;
1681 }
748a9306 1682 }
06bf62c7 1683 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1684#ifdef LEAKTEST
8c52afec
IZ		 1685 DEBUG_L(*message == '!'
1686 ? (xstat(message[1]=='!'
1687 ? (message[2]=='!' ? 2 : 1)
1688 : 0)
1689 , 0)
1690 : 0);
a687059c 1691#endif
20cec16a 1692 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1693}
8d063cd8 1694
c5be433b 1695#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1696void
1697Perl_warn_nocontext(const char *pat, ...)
1698{
1699 dTHX;
1700 va_list args;
1701 va_start(args, pat);
c5be433b 1702 vwarn(pat, &args);
cea2e8a9
GS		 1703 va_end(args);
1704}
1705#endif /* PERL_IMPLICIT_CONTEXT */
1706
1707void
1708Perl_warn(pTHX_ const char *pat, ...)
1709{
1710 va_list args;
1711 va_start(args, pat);
c5be433b 1712 vwarn(pat, &args);
cea2e8a9
GS		 1713 va_end(args);
1714}
1715
c5be433b
GS		 1716#if defined(PERL_IMPLICIT_CONTEXT)
1717void
1718Perl_warner_nocontext(U32 err, const char *pat, ...)
1719{
1720 dTHX;
1721 va_list args;
1722 va_start(args, pat);
1723 vwarner(err, pat, &args);
1724 va_end(args);
1725}
1726#endif /* PERL_IMPLICIT_CONTEXT */
1727
599cee73 1728void
864dbfa3 1729Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1730{
1731 va_list args;
c5be433b
GS		 1732 va_start(args, pat);
1733 vwarner(err, pat, &args);
1734 va_end(args);
1735}
1736
1737void
1738Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1739{
1740 dTHR;
599cee73
PM		 1741 char *message;
1742 HV *stash;
1743 GV *gv;
1744 CV *cv;
06bf62c7
GS		 1745 SV *msv;
1746 STRLEN msglen;
599cee73 1747
5a844595 1748 msv = vmess(pat, args);
06bf62c7 1749 message = SvPV(msv, msglen);
599cee73
PM		 1750
1751 if (ckDEAD(err)) {
1752#ifdef USE_THREADS
d008e5eb 1753 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM		 1754#endif /* USE_THREADS */
1755 if (PL_diehook) {
cea2e8a9 1756 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1757 SV *olddiehook = PL_diehook;
1758 ENTER;
1759 SAVESPTR(PL_diehook);
1760 PL_diehook = Nullsv;
1761 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1762 LEAVE;
1763 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1764 dSP;
1765 SV *msg;
1766
1767 ENTER;
06bf62c7 1768 msg = newSVpvn(message, msglen);
599cee73
PM		 1769 SvREADONLY_on(msg);
1770 SAVEFREESV(msg);
1771
1772 PUSHMARK(sp);
1773 XPUSHs(msg);
1774 PUTBACK;
864dbfa3 1775 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1776
1777 LEAVE;
1778 }
1779 }
1780 if (PL_in_eval) {
06bf62c7 1781 PL_restartop = die_where(message, msglen);
599cee73
PM		 1782 JMPENV_JUMP(3);
1783 }
06bf62c7 1784 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1785 (void)PerlIO_flush(PerlIO_stderr());
1786 my_failure_exit();
1787
1788 }
1789 else {
1790 if (PL_warnhook) {
cea2e8a9 1791 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1792 dTHR;
1793 SV *oldwarnhook = PL_warnhook;
1794 ENTER;
1795 SAVESPTR(PL_warnhook);
1796 PL_warnhook = Nullsv;
1797 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1798 LEAVE;
1799 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1800 dSP;
1801 SV *msg;
1802
1803 ENTER;
06bf62c7 1804 msg = newSVpvn(message, msglen);
599cee73
PM		 1805 SvREADONLY_on(msg);
1806 SAVEFREESV(msg);
1807
1808 PUSHMARK(sp);
1809 XPUSHs(msg);
1810 PUTBACK;
864dbfa3 1811 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1812
1813 LEAVE;
1814 return;
1815 }
1816 }
06bf62c7 1817 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1818#ifdef LEAKTEST
1819 DEBUG_L(xstat());
1820#endif
1821 (void)PerlIO_flush(PerlIO_stderr());
1822 }
1823}
1824
a0d0e21e 1825#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1826#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1827void
864dbfa3 1828Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1829{
f2517201
GS		 1830#ifndef PERL_USE_SAFE_PUTENV
1831 /* most putenv()s leak, so we manipulate environ directly */
79072805 1832 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1833
3280af22 1834 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1835 I32 j;
1836 I32 max;
fe14fcc3
LW		 1837 char **tmpenv;
1838
de3bb511 1839 /*SUPPRESS 530*/
fe14fcc3 1840 for (max = i; environ[max]; max++) ;
f2517201
GS		 1841 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1842 for (j=0; j<max; j++) { /* copy environment */
1843 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1844 strcpy(tmpenv[j], environ[j]);
1845 }
fe14fcc3
LW		 1846 tmpenv[max] = Nullch;
1847 environ = tmpenv; /* tell exec where it is now */
1848 }
a687059c 1849 if (!val) {
f2517201 1850 safesysfree(environ[i]);
a687059c
LW		 1851 while (environ[i]) {
1852 environ[i] = environ[i+1];
1853 i++;
1854 }
1855 return;
1856 }
8d063cd8 1857 if (!environ[i]) { /* does not exist yet */
f2517201 1858 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1859 environ[i+1] = Nullch; /* make sure it's null terminated */
1860 }
fe14fcc3 1861 else
f2517201
GS		 1862 safesysfree(environ[i]);
1863 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1864
a687059c 1865 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1866
1867#else /* PERL_USE_SAFE_PUTENV */
1868 char *new_env;
1869
1870 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1871 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1872 (void)putenv(new_env);
1873#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1874}
1875
2c2d71f5
JH		 1876#else /* WIN32 || CYGWIN */
1877#if defined(CYGWIN)
1cab015a
EF		 1878/*
1879 * Save environ of perl.exe, currently Cygwin links in separate environ's
1880 * for each exe/dll. Probably should be a member of impure_ptr.
1881 */
1882static char ***Perl_main_environ;
1883
1884EXTERN_C void
1885Perl_my_setenv_init(char ***penviron)
1886{
1887 Perl_main_environ = penviron;
1888}
1889
1890void
1891my_setenv(char *nam, char *val)
1892{
1893 /* You can not directly manipulate the environ[] array because
1894 * the routines do some additional work that syncs the Cygwin
1895 * environment with the Windows environment.
1896 */
1897 char *oldstr = environ[setenv_getix(nam)];
1898
1899 if (!val) {
1900 if (!oldstr)
1901 return;
1902 unsetenv(nam);
1903 Safefree(oldstr);
1904 return;
1905 }
1906 setenv(nam, val, 1);
1907 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1908 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1909 Safefree(oldstr);
1910}
3e3baf6d 1911#else /* if WIN32 */
68dc0745 1912
1913void
864dbfa3 1914Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1915{
3e3baf6d
TB		 1916
1917#ifdef USE_WIN32_RTL_ENV
1918
68dc0745 1919 register char *envstr;
1920 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1921 STRLEN vallen;
1922 char *oldstr = environ[setenv_getix(nam)];
1923
1924 /* putenv() has totally broken semantics in both the Borland
1925 * and Microsoft CRTLs. They either store the passed pointer in
1926 * the environment without making a copy, or make a copy and don't
1927 * free it. And on top of that, they dont free() old entries that
1928 * are being replaced/deleted. This means the caller must
1929 * free any old entries somehow, or we end up with a memory
1930 * leak every time my_setenv() is called. One might think
1931 * one could directly manipulate environ[], like the UNIX code
1932 * above, but direct changes to environ are not allowed when
1933 * calling putenv(), since the RTLs maintain an internal
1934 * *copy* of environ[]. Bad, bad, *bad* stink.
1935 * GSAR 97-06-07
1936 */
68dc0745 1937
3e3baf6d
TB		 1938 if (!val) {
1939 if (!oldstr)
1940 return;
1941 val = "";
1942 vallen = 0;
1943 }
1944 else
1945 vallen = strlen(val);
f2517201 1946 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1947 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1948 (void)PerlEnv_putenv(envstr);
3e3baf6d 1949 if (oldstr)
f2517201 1950 safesysfree(oldstr);
3e3baf6d 1951#ifdef _MSC_VER
f2517201 1952 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1953#endif
1954
1955#else /* !USE_WIN32_RTL_ENV */
1956
ac5c734f
GS		 1957 register char *envstr;
1958 STRLEN len = strlen(nam) + 3;
1959 if (!val) {
1960 val = "";
1961 }
1962 len += strlen(val);
1963 New(904, envstr, len, char);
1964 (void)sprintf(envstr,"%s=%s",nam,val);
1965 (void)PerlEnv_putenv(envstr);
1966 Safefree(envstr);
3e3baf6d
TB		 1967
1968#endif
1969}
1970
1971#endif /* WIN32 */
1cab015a 1972#endif
3e3baf6d
TB		 1973
1974I32
864dbfa3 1975Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 1976{
1977 register I32 i, len = strlen(nam);
1978
1979 for (i = 0; environ[i]; i++) {
1980 if (
1981#ifdef WIN32
1982 strnicmp(environ[i],nam,len) == 0
1983#else
1984 strnEQ(environ[i],nam,len)
1985#endif
1986 && environ[i][len] == '=')
1987 break; /* strnEQ must come first to avoid */
1988 } /* potential SEGV's */
1989 return i;
68dc0745 1990}
1991
a0d0e21e 1992#endif /* !VMS */
378cc40b 1993
16d20bd9 1994#ifdef UNLINK_ALL_VERSIONS
79072805 1995I32
864dbfa3 1996Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1997{
79072805 1998 I32 i;
378cc40b 1999
6ad3d225 2000 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2001 return i ? 0 : -1;
2002}
2003#endif
2004
85e6fe83 2005#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2006char *
864dbfa3 2007Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 2008{
2009 char *retval = to;
2010
7c0587c8
LW		 2011 if (from - to >= 0) {
2012 while (len--)
2013 *to++ = *from++;
2014 }
2015 else {
2016 to += len;
2017 from += len;
2018 while (len--)
faf8582f 2019 *(--to) = *(--from);
7c0587c8 2020 }
378cc40b
LW		 2021 return retval;
2022}
ffed7fef 2023#endif
378cc40b 2024
fc36a67e 2025#ifndef HAS_MEMSET
2026void *
864dbfa3 2027Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 2028{
2029 char *retval = loc;
2030
2031 while (len--)
2032 *loc++ = ch;
2033 return retval;
2034}
2035#endif
2036
7c0587c8 2037#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2038char *
864dbfa3 2039Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 2040{
2041 char *retval = loc;
2042
2043 while (len--)
2044 *loc++ = 0;
2045 return retval;
2046}
2047#endif
7c0587c8 2048
36477c24 2049#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2050I32
864dbfa3 2051Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2052{
36477c24 2053 register U8 *a = (U8 *)s1;
2054 register U8 *b = (U8 *)s2;
79072805 2055 register I32 tmp;
7c0587c8
LW		 2056
2057 while (len--) {
36477c24 2058 if (tmp = *a++ - *b++)
7c0587c8
LW		 2059 return tmp;
2060 }
2061 return 0;
2062}
36477c24 2063#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2064
fe14fcc3 2065#ifndef HAS_VPRINTF
a687059c 2066
85e6fe83 2067#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2068char *
2069#else
2070int
2071#endif
08105a92 2072vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2073{
2074 FILE fakebuf;
2075
2076 fakebuf._ptr = dest;
2077 fakebuf._cnt = 32767;
35c8bce7
LW		 2078#ifndef _IOSTRG
2079#define _IOSTRG 0
2080#endif
a687059c
LW		 2081 fakebuf._flag = _IOWRT|_IOSTRG;
2082 _doprnt(pat, args, &fakebuf); /* what a kludge */
2083 (void)putc('\0', &fakebuf);
85e6fe83 2084#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2085 return(dest);
2086#else
2087 return 0; /* perl doesn't use return value */
2088#endif
2089}
2090
fe14fcc3 2091#endif /* HAS_VPRINTF */
a687059c
LW		 2092
2093#ifdef MYSWAP
ffed7fef 2094#if BYTEORDER != 0x4321
a687059c 2095short
864dbfa3 2096Perl_my_swap(pTHX_ short s)
a687059c
LW		 2097{
2098#if (BYTEORDER & 1) == 0
2099 short result;
2100
2101 result = ((s & 255) << 8) + ((s >> 8) & 255);
2102 return result;
2103#else
2104 return s;
2105#endif
2106}
2107
2108long
864dbfa3 2109Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2110{
2111 union {
2112 long result;
ffed7fef 2113 char c[sizeof(long)];
a687059c
LW		 2114 } u;
2115
ffed7fef 2116#if BYTEORDER == 0x1234
a687059c
LW		 2117 u.c[0] = (l >> 24) & 255;
2118 u.c[1] = (l >> 16) & 255;
2119 u.c[2] = (l >> 8) & 255;
2120 u.c[3] = l & 255;
2121 return u.result;
2122#else
ffed7fef 2123#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2124 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2125#else
79072805
LW		 2126 register I32 o;
2127 register I32 s;
a687059c 2128
ffed7fef
LW		 2129 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2130 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2131 }
2132 return u.result;
2133#endif
2134#endif
2135}
2136
2137long
864dbfa3 2138Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2139{
2140 union {
2141 long l;
ffed7fef 2142 char c[sizeof(long)];
a687059c
LW		 2143 } u;
2144
ffed7fef 2145#if BYTEORDER == 0x1234
a687059c
LW		 2146 u.c[0] = (l >> 24) & 255;
2147 u.c[1] = (l >> 16) & 255;
2148 u.c[2] = (l >> 8) & 255;
2149 u.c[3] = l & 255;
2150 return u.l;
2151#else
ffed7fef 2152#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2153 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2154#else
79072805
LW		 2155 register I32 o;
2156 register I32 s;
a687059c
LW		 2157
2158 u.l = l;
2159 l = 0;
ffed7fef
LW		 2160 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2161 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2162 }
2163 return l;
2164#endif
2165#endif
2166}
2167
ffed7fef 2168#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2169#endif /* MYSWAP */
2170
2171/*
2172 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2173 * If these functions are defined,
2174 * the BYTEORDER is neither 0x1234 nor 0x4321.
2175 * However, this is not assumed.
2176 * -DWS
2177 */
2178
2179#define HTOV(name,type) \
2180 type \
ba106d47 2181 name (register type n) \
988174c1
LW		 2182 { \
2183 union { \
2184 type value; \
2185 char c[sizeof(type)]; \
2186 } u; \
79072805
LW		 2187 register I32 i; \
2188 register I32 s; \
988174c1
LW		 2189 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2190 u.c[i] = (n >> s) & 0xFF; \
2191 } \
2192 return u.value; \
2193 }
2194
2195#define VTOH(name,type) \
2196 type \
ba106d47 2197 name (register type n) \
988174c1
LW		 2198 { \
2199 union { \
2200 type value; \
2201 char c[sizeof(type)]; \
2202 } u; \
79072805
LW		 2203 register I32 i; \
2204 register I32 s; \
988174c1
LW		 2205 u.value = n; \
2206 n = 0; \
2207 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2208 n += (u.c[i] & 0xFF) << s; \
2209 } \
2210 return n; \
2211 }
2212
2213#if defined(HAS_HTOVS) && !defined(htovs)
2214HTOV(htovs,short)
2215#endif
2216#if defined(HAS_HTOVL) && !defined(htovl)
2217HTOV(htovl,long)
2218#endif
2219#if defined(HAS_VTOHS) && !defined(vtohs)
2220VTOH(vtohs,short)
2221#endif
2222#if defined(HAS_VTOHL) && !defined(vtohl)
2223VTOH(vtohl,long)
2224#endif
a687059c 2225
5f05dabc 2226 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2227#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2228PerlIO *
864dbfa3 2229Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2230{
2231 int p[2];
8ac85365 2232 register I32 This, that;
d8a83dd3 2233 register Pid_t pid;
79072805 2234 SV *sv;
1738f5c4 2235 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2236 I32 did_pipes = 0;
2237 int pp[2];
a687059c 2238
45bc9206 2239 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2240#ifdef OS2
2241 if (doexec) {
2242 return my_syspopen(cmd,mode);
2243 }
2244#endif
8ac85365
NIS		 2245 This = (*mode == 'w');
2246 that = !This;
3280af22 2247 if (doexec && PL_tainting) {
bbce6d69 2248 taint_env();
2249 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2250 }
c2267164
IZ		 2251 if (PerlProc_pipe(p) < 0)
2252 return Nullfp;
e446cec8
IZ		 2253 if (doexec && PerlProc_pipe(pp) >= 0)
2254 did_pipes = 1;
a687059c
LW		 2255 while ((pid = (doexec?vfork():fork())) < 0) {
2256 if (errno != EAGAIN) {
6ad3d225 2257 PerlLIO_close(p[This]);
e446cec8
IZ		 2258 if (did_pipes) {
2259 PerlLIO_close(pp[0]);
2260 PerlLIO_close(pp[1]);
2261 }
a687059c 2262 if (!doexec)
cea2e8a9 2263 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2264 return Nullfp;
2265 }
2266 sleep(5);
2267 }
2268 if (pid == 0) {
79072805
LW		 2269 GV* tmpgv;
2270
30ac6d9b
GS		 2271#undef THIS
2272#undef THAT
a687059c 2273#define THIS that
8ac85365 2274#define THAT This
6ad3d225 2275 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2276 if (did_pipes) {
2277 PerlLIO_close(pp[0]);
2278#if defined(HAS_FCNTL) && defined(F_SETFD)
2279 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2280#endif
2281 }
a687059c 2282 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2283 PerlLIO_dup2(p[THIS], *mode == 'r');
2284 PerlLIO_close(p[THIS]);
a687059c 2285 }
4435c477 2286#ifndef OS2
a687059c 2287 if (doexec) {
a0d0e21e 2288#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2289 int fd;
2290
2291#ifndef NOFILE
2292#define NOFILE 20
2293#endif
6b88bc9c 2294 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2295 if (fd != pp[1])
2296 PerlLIO_close(fd);
ae986130 2297#endif
e446cec8 2298 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2299 PerlProc__exit(1);
a687059c 2300 }
4435c477 2301#endif /* defined OS2 */
de3bb511 2302 /*SUPPRESS 560*/
85e6fe83 2303 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2304 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS		 2305 PL_forkprocess = 0;
2306 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2307 return Nullfp;
2308#undef THIS
2309#undef THAT
2310 }
62b28dd9 2311 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2312 PerlLIO_close(p[that]);
e446cec8
IZ		 2313 if (did_pipes)
2314 PerlLIO_close(pp[1]);
8ac85365 2315 if (p[that] < p[This]) {
6ad3d225
GS		 2316 PerlLIO_dup2(p[This], p[that]);
2317 PerlLIO_close(p[This]);
8ac85365 2318 p[This] = p[that];
62b28dd9 2319 }
3280af22 2320 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2321 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2322 SvIVX(sv) = pid;
3280af22 2323 PL_forkprocess = pid;
e446cec8
IZ		 2324 if (did_pipes && pid > 0) {
2325 int errkid;
2326 int n = 0, n1;
2327
2328 while (n < sizeof(int)) {
2329 n1 = PerlLIO_read(pp[0],
2330 (void*)(((char*)&errkid)+n),
2331 (sizeof(int)) - n);
2332 if (n1 <= 0)
2333 break;
2334 n += n1;
2335 }
2f96c702
IZ		 2336 PerlLIO_close(pp[0]);
2337 did_pipes = 0;
e446cec8
IZ		 2338 if (n) { /* Error */
2339 if (n != sizeof(int))
cea2e8a9 2340 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2341 errno = errkid; /* Propagate errno from kid */
2342 return Nullfp;
2343 }
2344 }
2345 if (did_pipes)
2346 PerlLIO_close(pp[0]);
8ac85365 2347 return PerlIO_fdopen(p[This], mode);
a687059c 2348}
7c0587c8 2349#else
55497cff 2350#if defined(atarist) || defined(DJGPP)
7c0587c8 2351FILE *popen();
760ac839 2352PerlIO *
864dbfa3 2353Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2354{
760ac839 2355 /* Needs work for PerlIO ! */
55497cff 2356 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2357 PERL_FLUSHALL_FOR_CHILD;
55497cff 2358 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2359}
2360#endif
2361
2362#endif /* !DOSISH */
a687059c 2363
748a9306 2364#ifdef DUMP_FDS
35ff7856 2365void
864dbfa3 2366Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2367{
2368 int fd;
2369 struct stat tmpstatbuf;
2370
760ac839 2371 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2372 for (fd = 0; fd < 32; fd++) {
6ad3d225 2373 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2374 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2375 }
760ac839 2376 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2377}
35ff7856 2378#endif /* DUMP_FDS */
ae986130 2379
fe14fcc3 2380#ifndef HAS_DUP2
fec02dd3 2381int
ba106d47 2382dup2(int oldfd, int newfd)
a687059c 2383{
a0d0e21e 2384#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2385 if (oldfd == newfd)
2386 return oldfd;
6ad3d225 2387 PerlLIO_close(newfd);
fec02dd3 2388 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2389#else
fc36a67e 2390#define DUP2_MAX_FDS 256
2391 int fdtmp[DUP2_MAX_FDS];
79072805 2392 I32 fdx = 0;
ae986130
LW		 2393 int fd;
2394
fe14fcc3 2395 if (oldfd == newfd)
fec02dd3 2396 return oldfd;
6ad3d225 2397 PerlLIO_close(newfd);
fc36a67e 2398 /* good enough for low fd's... */
6ad3d225 2399 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2400 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2401 PerlLIO_close(fd);
fc36a67e 2402 fd = -1;
2403 break;
2404 }
ae986130 2405 fdtmp[fdx++] = fd;
fc36a67e 2406 }
ae986130 2407 while (fdx > 0)
6ad3d225 2408 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2409 return fd;
62b28dd9 2410#endif
a687059c
LW		 2411}
2412#endif
2413
ff68c719 2414
2415#ifdef HAS_SIGACTION
2416
2417Sighandler_t
864dbfa3 2418Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2419{
2420 struct sigaction act, oact;
2421
2422 act.sa_handler = handler;
2423 sigemptyset(&act.sa_mask);
2424 act.sa_flags = 0;
2425#ifdef SA_RESTART
2426 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2427#endif
85264bed
CS		 2428#ifdef SA_NOCLDWAIT
2429 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2430 act.sa_flags |= SA_NOCLDWAIT;
2431#endif
ff68c719 2432 if (sigaction(signo, &act, &oact) == -1)
36477c24 2433 return SIG_ERR;
ff68c719 2434 else
36477c24 2435 return oact.sa_handler;
ff68c719 2436}
2437
2438Sighandler_t
864dbfa3 2439Perl_rsignal_state(pTHX_ int signo)
ff68c719 2440{
2441 struct sigaction oact;
2442
2443 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2444 return SIG_ERR;
2445 else
2446 return oact.sa_handler;
2447}
2448
2449int
864dbfa3 2450Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2451{
2452 struct sigaction act;
2453
2454 act.sa_handler = handler;
2455 sigemptyset(&act.sa_mask);
2456 act.sa_flags = 0;
2457#ifdef SA_RESTART
2458 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2459#endif
85264bed
CS		 2460#ifdef SA_NOCLDWAIT
2461 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2462 act.sa_flags |= SA_NOCLDWAIT;
2463#endif
ff68c719 2464 return sigaction(signo, &act, save);
2465}
2466
2467int
864dbfa3 2468Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2469{
2470 return sigaction(signo, save, (struct sigaction *)NULL);
2471}
2472
2473#else /* !HAS_SIGACTION */
2474
2475Sighandler_t
864dbfa3 2476Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2477{
6ad3d225 2478 return PerlProc_signal(signo, handler);
ff68c719 2479}
2480
2481static int sig_trapped;
2482
2483static
2484Signal_t
4e35701f 2485sig_trap(int signo)
ff68c719 2486{
2487 sig_trapped++;
2488}
2489
2490Sighandler_t
864dbfa3 2491Perl_rsignal_state(pTHX_ int signo)
ff68c719 2492{
2493 Sighandler_t oldsig;
2494
2495 sig_trapped = 0;
6ad3d225
GS		 2496 oldsig = PerlProc_signal(signo, sig_trap);
2497 PerlProc_signal(signo, oldsig);
ff68c719 2498 if (sig_trapped)
6ad3d225 2499 PerlProc_kill(getpid(), signo);
ff68c719 2500 return oldsig;
2501}
2502
2503int
864dbfa3 2504Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2505{
6ad3d225 2506 *save = PerlProc_signal(signo, handler);
ff68c719 2507 return (*save == SIG_ERR) ? -1 : 0;
2508}
2509
2510int
864dbfa3 2511Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2512{
6ad3d225 2513 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2514}
2515
2516#endif /* !HAS_SIGACTION */
2517
5f05dabc 2518 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2519#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2520I32
864dbfa3 2521Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2522{
ff68c719 2523 Sigsave_t hstat, istat, qstat;
a687059c 2524 int status;
a0d0e21e 2525 SV **svp;
d8a83dd3
JH		 2526 Pid_t pid;
2527 Pid_t pid2;
03136e13
CS		 2528 bool close_failed;
2529 int saved_errno;
2530#ifdef VMS
2531 int saved_vaxc_errno;
2532#endif
22fae026
TM		 2533#ifdef WIN32
2534 int saved_win32_errno;
2535#endif
a687059c 2536
3280af22 2537 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2538 pid = SvIVX(*svp);
a0d0e21e 2539 SvREFCNT_dec(*svp);
3280af22 2540 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2541#ifdef OS2
2542 if (pid == -1) { /* Opened by popen. */
2543 return my_syspclose(ptr);
2544 }
2545#endif
03136e13
CS		 2546 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2547 saved_errno = errno;
2548#ifdef VMS
2549 saved_vaxc_errno = vaxc$errno;
2550#endif
22fae026
TM		 2551#ifdef WIN32
2552 saved_win32_errno = GetLastError();
2553#endif
03136e13 2554 }
7c0587c8 2555#ifdef UTS
6ad3d225 2556 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2557#endif
ff68c719 2558 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2559 rsignal_save(SIGINT, SIG_IGN, &istat);
2560 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2561 do {
1d3434b8
GS		 2562 pid2 = wait4pid(pid, &status, 0);
2563 } while (pid2 == -1 && errno == EINTR);
ff68c719 2564 rsignal_restore(SIGHUP, &hstat);
2565 rsignal_restore(SIGINT, &istat);
2566 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2567 if (close_failed) {
2568 SETERRNO(saved_errno, saved_vaxc_errno);
2569 return -1;
2570 }
1d3434b8 2571 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2572}
4633a7c4
LW		 2573#endif /* !DOSISH */
2574
2c2d71f5 2575#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2576I32
d8a83dd3 2577Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2578{
79072805
LW		 2579 SV *sv;
2580 SV** svp;
fc36a67e 2581 char spid[TYPE_CHARS(int)];
20188a90
LW		 2582
2583 if (!pid)
2584 return -1;
20188a90
LW		 2585 if (pid > 0) {
2586 sprintf(spid, "%d", pid);
3280af22
NIS		 2587 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2588 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2589 *statusp = SvIVX(*svp);
3280af22 2590 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2591 return pid;
2592 }
2593 }
2594 else {
79072805 2595 HE *entry;
20188a90 2596
3280af22
NIS		 2597 hv_iterinit(PL_pidstatus);
2598 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2599 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2600 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2601 *statusp = SvIVX(sv);
20188a90 2602 sprintf(spid, "%d", pid);
3280af22 2603 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2604 return pid;
2605 }
2606 }
79072805 2607#ifdef HAS_WAITPID
367f3c24
IZ		 2608# ifdef HAS_WAITPID_RUNTIME
2609 if (!HAS_WAITPID_RUNTIME)
2610 goto hard_way;
2611# endif
f55ee38a 2612 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2613#endif
2614#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2615 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2616#endif
2617#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2618 hard_way:
a0d0e21e
LW		 2619 {
2620 I32 result;
2621 if (flags)
cea2e8a9 2622 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2623 else {
76e3520e 2624 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2625 pidgone(result,*statusp);
2626 if (result < 0)
2627 *statusp = -1;
2628 }
2629 return result;
a687059c
LW		 2630 }
2631#endif
a687059c 2632}
2d7a9237 2633#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2634
7c0587c8 2635void
de3bb511 2636/*SUPPRESS 590*/
d8a83dd3 2637Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2638{
79072805 2639 register SV *sv;
fc36a67e 2640 char spid[TYPE_CHARS(int)];
a687059c 2641
20188a90 2642 sprintf(spid, "%d", pid);
3280af22 2643 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2644 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2645 SvIVX(sv) = status;
20188a90 2646 return;
a687059c
LW		 2647}
2648
55497cff 2649#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2650int pclose();
ddcf38b7
IZ		 2651#ifdef HAS_FORK
2652int /* Cannot prototype with I32
2653 in os2ish.h. */
ba106d47 2654my_syspclose(PerlIO *ptr)
ddcf38b7 2655#else
79072805 2656I32
864dbfa3 2657Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2658#endif
a687059c 2659{
760ac839
LW		 2660 /* Needs work for PerlIO ! */
2661 FILE *f = PerlIO_findFILE(ptr);
2662 I32 result = pclose(f);
933fea7f
GS		 2663#if defined(DJGPP)
2664 result = (result << 8) & 0xff00;
2665#endif
760ac839
LW		 2666 PerlIO_releaseFILE(ptr,f);
2667 return result;
a687059c 2668}
7c0587c8 2669#endif
9f68db38
LW		 2670
2671void
864dbfa3 2672Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2673{
79072805 2674 register I32 todo;
08105a92 2675 register const char *frombase = from;
9f68db38
LW		 2676
2677 if (len == 1) {
08105a92 2678 register const char c = *from;
9f68db38 2679 while (count-- > 0)
5926133d 2680 *to++ = c;
9f68db38
LW		 2681 return;
2682 }
2683 while (count-- > 0) {
2684 for (todo = len; todo > 0; todo--) {
2685 *to++ = *from++;
2686 }
2687 from = frombase;
2688 }
2689}
0f85fab0 2690
463ee0b2 2691U32
65202027 2692Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2693{
2694 long along;
2695
27e2fb84 2696#if CASTFLAGS & 2
34de22dd
LW		 2697# define BIGDOUBLE 2147483648.0
2698 if (f >= BIGDOUBLE)
2699 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2700#endif
0f85fab0
LW		 2701 if (f >= 0.0)
2702 return (unsigned long)f;
2703 along = (long)f;
2704 return (unsigned long)along;
2705}
ed6116ce 2706# undef BIGDOUBLE
5d94fbed 2707
5d94fbed
AD		 2708/* Unfortunately, on some systems the cast_uv() function doesn't
2709 work with the system-supplied definition of ULONG_MAX. The
2710 comparison (f >= ULONG_MAX) always comes out true. It must be a
2711 problem with the compiler constant folding.
2712
2713 In any case, this workaround should be fine on any two's complement
2714 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2715 ccflags.
2716 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2717*/
1eb770ff 2718
2719/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2720 of LONG_(MIN/MAX).
2721 -- Kenneth Albanowski <kjahds@kjahds.com>
2722*/
2723
20cec16a 2724#ifndef MY_UV_MAX
2725# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2726#endif
2727
ed6116ce 2728I32
65202027 2729Perl_cast_i32(pTHX_ NV f)
ed6116ce 2730{
20cec16a 2731 if (f >= I32_MAX)
2732 return (I32) I32_MAX;
2733 if (f <= I32_MIN)
2734 return (I32) I32_MIN;
ed6116ce
LW		 2735 return (I32) f;
2736}
a0d0e21e
LW		 2737
2738IV
65202027 2739Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2740{
25da4f38
IZ		 2741 if (f >= IV_MAX) {
2742 UV uv;
2743
65202027 2744 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2745 return (IV) UV_MAX;
2746 uv = (UV) f;
2747 return (IV)uv;
2748 }
20cec16a 2749 if (f <= IV_MIN)
2750 return (IV) IV_MIN;
a0d0e21e
LW		 2751 return (IV) f;
2752}
5d94fbed
AD		 2753
2754UV
65202027 2755Perl_cast_uv(pTHX_ NV f)
5d94fbed 2756{
20cec16a 2757 if (f >= MY_UV_MAX)
2758 return (UV) MY_UV_MAX;
25da4f38
IZ		 2759 if (f < 0) {
2760 IV iv;
2761
2762 if (f < IV_MIN)
2763 return (UV)IV_MIN;
2764 iv = (IV) f;
2765 return (UV) iv;
2766 }
5d94fbed
AD		 2767 return (UV) f;
2768}
2769
fe14fcc3 2770#ifndef HAS_RENAME
79072805 2771I32
864dbfa3 2772Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2773{
93a17b20
LW		 2774 char *fa = strrchr(a,'/');
2775 char *fb = strrchr(b,'/');
62b28dd9
LW		 2776 struct stat tmpstatbuf1;
2777 struct stat tmpstatbuf2;
46fc3d4c 2778 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2779
2780 if (fa)
2781 fa++;
2782 else
2783 fa = a;
2784 if (fb)
2785 fb++;
2786 else
2787 fb = b;
2788 if (strNE(a,b))
2789 return FALSE;
2790 if (fa == a)
46fc3d4c 2791 sv_setpv(tmpsv, ".");
62b28dd9 2792 else
46fc3d4c 2793 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2794 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2795 return FALSE;
2796 if (fb == b)
46fc3d4c 2797 sv_setpv(tmpsv, ".");
62b28dd9 2798 else
46fc3d4c 2799 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2800 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2801 return FALSE;
2802 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2803 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2804}
fe14fcc3
LW		 2805#endif /* !HAS_RENAME */
2806
9e24b6e2 2807NV
864dbfa3 2808Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2809{
2810 register char *s = start;
9e24b6e2
JH		 2811 register NV rnv = 0.0;
2812 register UV ruv = 0;
252aa082 2813 register bool seenb = FALSE;
9e24b6e2 2814 register bool overflowed = FALSE;
252aa082
JH		 2815
2816 for (; len-- && *s; s++) {
2817 if (!(*s == '0' || *s == '1')) {
2818 if (*s == '_')
9e24b6e2 2819 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2820 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2821 /* Disallow 0bbb0b0bbb... */
2822 seenb = TRUE;
252aa082
JH		 2823 continue;
2824 }
2825 else {
2826 dTHR;
627300f0
JH		 2827 if (ckWARN(WARN_DIGIT))
2828 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2829 "Illegal binary digit '%c' ignored", *s);
2830 break;
2831 }
9e24b6e2
JH		 2832 }
2833 if (!overflowed) {
2834 register UV xuv = ruv << 1;
2835
2836 if ((xuv >> 1) != ruv) {
2837 dTHR;
2838 overflowed = TRUE;
2839 rnv = (NV) ruv;
627300f0
JH		 2840 if (ckWARN_d(WARN_OVERFLOW))
2841 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2842 "Integer overflow in binary number");
2843 } else
2844 ruv = xuv | (*s - '0');
2845 }
2846 if (overflowed) {
2847 rnv *= 2;
2848 /* If an NV has not enough bits in its mantissa to
2849 * represent an UV this summing of small low-order numbers
2850 * is a waste of time (because the NV cannot preserve
2851 * the low-order bits anyway): we could just remember when
2852 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2853 * right amount. */
9e24b6e2 2854 rnv += (*s - '0');
f248d071 2855 }
4f19785b 2856 }
9e24b6e2
JH		 2857 if (!overflowed)
2858 rnv = (NV) ruv;
893fe2c2 2859 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2860#if UVSIZE > 4
893fe2c2
JH		 2861 || (!overflowed && ruv > 0xffffffff )
2862#endif
2863 ) {
252aa082 2864 dTHR;
627300f0
JH		 2865 if (ckWARN(WARN_PORTABLE))
2866 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2867 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2868 }
2869 *retlen = s - start;
9e24b6e2 2870 return rnv;
4f19785b 2871}
9e24b6e2
JH		 2872
2873NV
864dbfa3 2874Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2875{
2876 register char *s = start;
9e24b6e2
JH		 2877 register NV rnv = 0.0;
2878 register UV ruv = 0;
2879 register bool overflowed = FALSE;
252aa082
JH		 2880
2881 for (; len-- && *s; s++) {
2882 if (!(*s >= '0' && *s <= '7')) {
2883 if (*s == '_')
9e24b6e2 2884 continue; /* Note: does not check for __ and the like. */
252aa082 2885 else {
f84f607d
JH		 2886 /* Allow \octal to work the DWIM way (that is, stop scanning
2887 * as soon as non-octal characters are seen, complain only iff
2888 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2889 if (*s == '8' || *s == '9') {
2890 dTHR;
627300f0
JH		 2891 if (ckWARN(WARN_DIGIT))
2892 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2893 "Illegal octal digit '%c' ignored", *s);
2894 }
2895 break;
2896 }
55497cff 2897 }
9e24b6e2 2898 if (!overflowed) {
893fe2c2 2899 register UV xuv = ruv << 3;
9e24b6e2
JH		 2900
2901 if ((xuv >> 3) != ruv) {
2902 dTHR;
2903 overflowed = TRUE;
2904 rnv = (NV) ruv;
627300f0
JH		 2905 if (ckWARN_d(WARN_OVERFLOW))
2906 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2907 "Integer overflow in octal number");
2908 } else
2909 ruv = xuv | (*s - '0');
2910 }
2911 if (overflowed) {
2912 rnv *= 8.0;
2913 /* If an NV has not enough bits in its mantissa to
2914 * represent an UV this summing of small low-order numbers
2915 * is a waste of time (because the NV cannot preserve
2916 * the low-order bits anyway): we could just remember when
2917 * did we overflow and in the end just multiply rnv by the
2918 * right amount of 8-tuples. */
2919 rnv += (NV)(*s - '0');
2920 }
fe14fcc3 2921 }
9e24b6e2
JH		 2922 if (!overflowed)
2923 rnv = (NV) ruv;
893fe2c2 2924 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2925#if UVSIZE > 4
893fe2c2
JH		 2926 || (!overflowed && ruv > 0xffffffff )
2927#endif
2928 ) {
d008e5eb 2929 dTHR;
627300f0
JH		 2930 if (ckWARN(WARN_PORTABLE))
2931 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2932 "Octal number > 037777777777 non-portable");
d008e5eb 2933 }
fe14fcc3 2934 *retlen = s - start;
9e24b6e2 2935 return rnv;
fe14fcc3
LW		 2936}
2937
9e24b6e2 2938NV
864dbfa3 2939Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2940{
2941 register char *s = start;
9e24b6e2
JH		 2942 register NV rnv = 0.0;
2943 register UV ruv = 0;
252aa082 2944 register bool seenx = FALSE;
9e24b6e2 2945 register bool overflowed = FALSE;
9e24b6e2 2946 char *hexdigit;
fe14fcc3 2947
9e24b6e2
JH		 2948 for (; len-- && *s; s++) {
2949 hexdigit = strchr((char *) PL_hexdigit, *s);
2950 if (!hexdigit) {
2951 if (*s == '_')
2952 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2953 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 2954 /* Disallow 0xxx0x0xxx... */
2955 seenx = TRUE;
252aa082
JH		 2956 continue;
2957 }
a0ed51b3 2958 else {
d008e5eb 2959 dTHR;
627300f0
JH		 2960 if (ckWARN(WARN_DIGIT))
2961 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2962 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 2963 break;
2964 }
2965 }
9e24b6e2
JH		 2966 if (!overflowed) {
2967 register UV xuv = ruv << 4;
2968
2969 if ((xuv >> 4) != ruv) {
2970 dTHR;
2971 overflowed = TRUE;
2972 rnv = (NV) ruv;
627300f0
JH		 2973 if (ckWARN_d(WARN_OVERFLOW))
2974 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2975 "Integer overflow in hexadecimal number");
2976 } else
2977 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2978 }
2979 if (overflowed) {
2980 rnv *= 16.0;
2981 /* If an NV has not enough bits in its mantissa to
2982 * represent an UV this summing of small low-order numbers
2983 * is a waste of time (because the NV cannot preserve
2984 * the low-order bits anyway): we could just remember when
2985 * did we overflow and in the end just multiply rnv by the
2986 * right amount of 16-tuples. */
2987 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2988 }
6ff81951 2989 }
9e24b6e2
JH		 2990 if (!overflowed)
2991 rnv = (NV) ruv;
893fe2c2 2992 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2993#if UVSIZE > 4
893fe2c2
JH		 2994 || (!overflowed && ruv > 0xffffffff )
2995#endif
2996 ) {
252aa082 2997 dTHR;
627300f0
JH		 2998 if (ckWARN(WARN_PORTABLE))
2999 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3000 "Hexadecimal number > 0xffffffff non-portable");
3001 }
fe14fcc3 3002 *retlen = s - start;
9e24b6e2 3003 return rnv;
fe14fcc3 3004}
760ac839 3005
491527d0 3006char*
864dbfa3 3007Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3008{
3009 dTHR;
3010 char *xfound = Nullch;
3011 char *xfailed = Nullch;
0f31cffe 3012 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3013 register char *s;
3014 I32 len;
3015 int retval;
3016#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3017# define SEARCH_EXTS ".bat", ".cmd", NULL
3018# define MAX_EXT_LEN 4
3019#endif
3020#ifdef OS2
3021# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3022# define MAX_EXT_LEN 4
3023#endif
3024#ifdef VMS
3025# define SEARCH_EXTS ".pl", ".com", NULL
3026# define MAX_EXT_LEN 4
3027#endif
3028 /* additional extensions to try in each dir if scriptname not found */
3029#ifdef SEARCH_EXTS
3030 char *exts[] = { SEARCH_EXTS };
3031 char **ext = search_ext ? search_ext : exts;
3032 int extidx = 0, i = 0;
3033 char *curext = Nullch;
3034#else
3035# define MAX_EXT_LEN 0
3036#endif
3037
3038 /*
3039 * If dosearch is true and if scriptname does not contain path
3040 * delimiters, search the PATH for scriptname.
3041 *
3042 * If SEARCH_EXTS is also defined, will look for each
3043 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3044 * while searching the PATH.
3045 *
3046 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3047 * proceeds as follows:
3048 * If DOSISH or VMSISH:
3049 * + look for ./scriptname{,.foo,.bar}
3050 * + search the PATH for scriptname{,.foo,.bar}
3051 *
3052 * If !DOSISH:
3053 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3054 * this will not look in '.' if it's not in the PATH)
3055 */
84486fc6 3056 tmpbuf[0] = '\0';
491527d0
GS		 3057
3058#ifdef VMS
3059# ifdef ALWAYS_DEFTYPES
3060 len = strlen(scriptname);
3061 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3062 int hasdir, idx = 0, deftypes = 1;
3063 bool seen_dot = 1;
3064
3065 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3066# else
3067 if (dosearch) {
3068 int hasdir, idx = 0, deftypes = 1;
3069 bool seen_dot = 1;
3070
3071 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3072# endif
3073 /* The first time through, just add SEARCH_EXTS to whatever we
3074 * already have, so we can check for default file types. */
3075 while (deftypes ||
84486fc6 3076 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3077 {
3078 if (deftypes) {
3079 deftypes = 0;
84486fc6 3080 *tmpbuf = '\0';
491527d0 3081 }
84486fc6
GS		 3082 if ((strlen(tmpbuf) + strlen(scriptname)
3083 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3084 continue; /* don't search dir with too-long name */
84486fc6 3085 strcat(tmpbuf, scriptname);
491527d0
GS		 3086#else /* !VMS */
3087
3088#ifdef DOSISH
3089 if (strEQ(scriptname, "-"))
3090 dosearch = 0;
3091 if (dosearch) { /* Look in '.' first. */
3092 char *cur = scriptname;
3093#ifdef SEARCH_EXTS
3094 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3095 while (ext[i])
3096 if (strEQ(ext[i++],curext)) {
3097 extidx = -1; /* already has an ext */
3098 break;
3099 }
3100 do {
3101#endif
3102 DEBUG_p(PerlIO_printf(Perl_debug_log,
3103 "Looking for %s\n",cur));
017f25f1
IZ		 3104 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3105 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3106 dosearch = 0;
3107 scriptname = cur;
3108#ifdef SEARCH_EXTS
3109 break;
3110#endif
3111 }
3112#ifdef SEARCH_EXTS
3113 if (cur == scriptname) {
3114 len = strlen(scriptname);
84486fc6 3115 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3116 break;
84486fc6 3117 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3118 }
3119 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3120 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3121#endif
3122 }
3123#endif
3124
3125 if (dosearch && !strchr(scriptname, '/')
3126#ifdef DOSISH
3127 && !strchr(scriptname, '\\')
3128#endif
3129 && (s = PerlEnv_getenv("PATH"))) {
3130 bool seen_dot = 0;
3131
3280af22
NIS		 3132 PL_bufend = s + strlen(s);
3133 while (s < PL_bufend) {
491527d0
GS		 3134#if defined(atarist) || defined(DOSISH)
3135 for (len = 0; *s
3136# ifdef atarist
3137 && *s != ','
3138# endif
3139 && *s != ';'; len++, s++) {
84486fc6
GS		 3140 if (len < sizeof tmpbuf)
3141 tmpbuf[len] = *s;
491527d0 3142 }
84486fc6
GS		 3143 if (len < sizeof tmpbuf)
3144 tmpbuf[len] = '\0';
491527d0 3145#else /* ! (atarist || DOSISH) */
3280af22 3146 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3147 ':',
3148 &len);
3149#endif /* ! (atarist || DOSISH) */
3280af22 3150 if (s < PL_bufend)
491527d0 3151 s++;
84486fc6 3152 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS		 3153 continue; /* don't search dir with too-long name */
3154 if (len
61ae2fbf 3155#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3156 && tmpbuf[len - 1] != '/'
3157 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3158#endif
3159 )
84486fc6
GS		 3160 tmpbuf[len++] = '/';
3161 if (len == 2 && tmpbuf[0] == '.')
491527d0 3162 seen_dot = 1;
84486fc6 3163 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3164#endif /* !VMS */
3165
3166#ifdef SEARCH_EXTS
84486fc6 3167 len = strlen(tmpbuf);
491527d0
GS		 3168 if (extidx > 0) /* reset after previous loop */
3169 extidx = 0;
3170 do {
3171#endif
84486fc6 3172 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3173 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3174 if (S_ISDIR(PL_statbuf.st_mode)) {
3175 retval = -1;
3176 }
491527d0
GS		 3177#ifdef SEARCH_EXTS
3178 } while ( retval < 0 /* not there */
3179 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3180 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3181 );
3182#endif
3183 if (retval < 0)
3184 continue;
3280af22
NIS		 3185 if (S_ISREG(PL_statbuf.st_mode)
3186 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3187#ifndef DOSISH
3280af22 3188 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3189#endif
3190 )
3191 {
84486fc6 3192 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3193 break;
3194 }
3195 if (!xfailed)
84486fc6 3196 xfailed = savepv(tmpbuf);
491527d0
GS		 3197 }
3198#ifndef DOSISH
017f25f1
IZ		 3199 if (!xfound && !seen_dot && !xfailed &&
3200 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3201 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3202#endif
3203 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3204 if (!xfound) {
3205 if (flags & 1) { /* do or die? */
cea2e8a9 3206 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3207 (xfailed ? "execute" : "find"),
3208 (xfailed ? xfailed : scriptname),
3209 (xfailed ? "" : " on PATH"),
3210 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3211 }
3212 scriptname = Nullch;
3213 }
491527d0
GS		 3214 if (xfailed)
3215 Safefree(xfailed);
3216 scriptname = xfound;
3217 }
9ccb31f9 3218 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3219}
3220
3221
11343788 3222#ifdef USE_THREADS
12ca11f6
MB		 3223#ifdef FAKE_THREADS
3224/* Very simplistic scheduler for now */
3225void
3226schedule(void)
3227{
c7848ba1 3228 thr = thr->i.next_run;
12ca11f6
MB		 3229}
3230
3231void
864dbfa3 3232Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3233{
3234 *cp = 0;
3235}
3236
3237void
864dbfa3 3238Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3239{
51dd5992 3240 perl_os_thread t;
12ca11f6
MB		 3241 perl_cond cond = *cp;
3242
3243 if (!cond)
3244 return;
3245 t = cond->thread;
3246 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3247 t->i.next_run = thr->i.next_run;
3248 thr->i.next_run->i.prev_run = t;
3249 t->i.prev_run = thr;
3250 thr->i.next_run = t;
3251 thr->i.wait_queue = 0;
12ca11f6
MB		 3252 /* Remove from the wait queue */
3253 *cp = cond->next;
3254 Safefree(cond);
3255}
3256
3257void
864dbfa3 3258Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3259{
51dd5992 3260 perl_os_thread t;
12ca11f6
MB		 3261 perl_cond cond, cond_next;
3262
3263 for (cond = *cp; cond; cond = cond_next) {
3264 t = cond->thread;
3265 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3266 t->i.next_run = thr->i.next_run;
3267 thr->i.next_run->i.prev_run = t;
3268 t->i.prev_run = thr;
3269 thr->i.next_run = t;
3270 thr->i.wait_queue = 0;
12ca11f6
MB		 3271 /* Remove from the wait queue */
3272 cond_next = cond->next;
3273 Safefree(cond);
3274 }
3275 *cp = 0;
3276}
3277
3278void
864dbfa3 3279Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3280{
3281 perl_cond cond;
3282
c7848ba1 3283 if (thr->i.next_run == thr)
cea2e8a9 3284 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3285
0f15f207 3286 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3287 cond->thread = thr;
3288 cond->next = *cp;
3289 *cp = cond;
c7848ba1 3290 thr->i.wait_queue = cond;
12ca11f6 3291 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3292 thr->i.next_run->i.prev_run = thr->i.prev_run;
3293 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3294}
3295#endif /* FAKE_THREADS */
3296
0d85d877 3297#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3298struct perl_thread *
864dbfa3 3299Perl_getTHR(pTHX)
11343788
MB		 3300{
3301 pthread_addr_t t;
3302
6b88bc9c 3303 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3304 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3305 return (struct perl_thread *) t;
11343788 3306}
0d85d877 3307#endif
f93b4edd
MB		 3308
3309MAGIC *
864dbfa3 3310Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3311{
3312 MAGIC *mg;
3313
3314 SvUPGRADE(sv, SVt_PVMG);
3315 mg = mg_find(sv, 'm');
3316 if (!mg) {
3317 condpair_t *cp;
3318
3319 New(53, cp, 1, condpair_t);
3320 MUTEX_INIT(&cp->mutex);
3321 COND_INIT(&cp->owner_cond);
3322 COND_INIT(&cp->cond);
3323 cp->owner = 0;
28a8573f 3324 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3325 mg = mg_find(sv, 'm');
3326 if (mg) {
3327 /* someone else beat us to initialising it */
28a8573f 3328 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3329 MUTEX_DESTROY(&cp->mutex);
3330 COND_DESTROY(&cp->owner_cond);
3331 COND_DESTROY(&cp->cond);
3332 Safefree(cp);
3333 }
3334 else {
3335 sv_magic(sv, Nullsv, 'm', 0, 0);
3336 mg = SvMAGIC(sv);
3337 mg->mg_ptr = (char *)cp;
565764a8 3338 mg->mg_len = sizeof(cp);
28a8573f 3339 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3340 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3341 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3342 }
3343 }
3344 return mg;
3345}
a863c7d1
MB		 3346
3347/*
199100c8
MB		 3348 * Make a new perl thread structure using t as a prototype. Some of the
3349 * fields for the new thread are copied from the prototype thread, t,
3350 * so t should not be running in perl at the time this function is
3351 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3352 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3353 */
52e1cb5e 3354struct perl_thread *
864dbfa3 3355Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3356{
c5be433b 3357#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3358 struct perl_thread *thr;
cea2e8a9 3359#endif
a863c7d1 3360 SV *sv;
199100c8
MB		 3361 SV **svp;
3362 I32 i;
3363
79cb57f6 3364 sv = newSVpvn("", 0);
52e1cb5e
JH		 3365 SvGROW(sv, sizeof(struct perl_thread) + 1);
3366 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3367 thr = (Thread) SvPVX(sv);
949ced2d 3368#ifdef DEBUGGING
52e1cb5e 3369 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3370 PL_markstack = 0;
3371 PL_scopestack = 0;
3372 PL_savestack = 0;
3373 PL_retstack = 0;
3374 PL_dirty = 0;
3375 PL_localizing = 0;
949ced2d
GS		 3376 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3377#else
3378 Zero(thr, 1, struct perl_thread);
3379#endif
199100c8 3380
0b94c7bb 3381 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3382
199100c8 3383 thr->oursv = sv;
cea2e8a9 3384 init_stacks();
a863c7d1 3385
533c011a 3386 PL_curcop = &PL_compiling;
c5be433b 3387 thr->interp = t->interp;
199100c8 3388 thr->cvcache = newHV();
54b9620d 3389 thr->threadsv = newAV();
a863c7d1 3390 thr->specific = newAV();
79cb57f6 3391 thr->errsv = newSVpvn("", 0);
38a03e6e 3392 thr->errhv = newHV();
a863c7d1
MB		 3393 thr->flags = THRf_R_JOINABLE;
3394 MUTEX_INIT(&thr->mutex);
199100c8 3395
d55594ae
GS		 3396 /* top_env needs to be non-zero. It points to an area
3397 in which longjmp() stuff is stored, as C callstack
3398 info there at least is thread specific this has to
3399 be per-thread. Otherwise a 'die' in a thread gives
3400 that thread the C stack of last thread to do an eval {}!
3401 See comments in scope.h
3402 Initialize top entry (as in perl.c for main thread)
3403 */
533c011a
NIS		 3404 PL_start_env.je_prev = NULL;
3405 PL_start_env.je_ret = -1;
3406 PL_start_env.je_mustcatch = TRUE;
3407 PL_top_env = &PL_start_env;
3408
faef0170 3409 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3410 PL_restartop = 0;
3411
b099ddc0 3412 PL_statname = NEWSV(66,0);
5a844595 3413 PL_errors = newSVpvn("", 0);
b099ddc0 3414 PL_maxscream = -1;
0b94c7bb
GS		 3415 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3416 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3417 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3418 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3419 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3420 PL_regindent = 0;
3421 PL_reginterp_cnt = 0;
3422 PL_lastscream = Nullsv;
3423 PL_screamfirst = 0;
3424 PL_screamnext = 0;
3425 PL_reg_start_tmp = 0;
3426 PL_reg_start_tmpl = 0;
14ed4b74 3427 PL_reg_poscache = Nullch;
b099ddc0
GS		 3428
3429 /* parent thread's data needs to be locked while we make copy */
3430 MUTEX_LOCK(&t->mutex);
3431
312caa8e
CS		 3432 PL_protect = t->Tprotect;
3433
b099ddc0
GS		 3434 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3435 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3436 PL_curstash = t->Tcurstash; /* always be set to main? */
3437
6b88bc9c 3438 PL_tainted = t->Ttainted;
84fee439
NIS		 3439 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3440 PL_nrs = newSVsv(t->Tnrs);
3441 PL_rs = SvREFCNT_inc(PL_nrs);
3442 PL_last_in_gv = Nullgv;
3443 PL_ofslen = t->Tofslen;
3444 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3445 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3446 PL_chopset = t->Tchopset;
3447 PL_formtarget = newSVsv(t->Tformtarget);
3448 PL_bodytarget = newSVsv(t->Tbodytarget);
3449 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3450
54b9620d
MB		 3451 /* Initialise all per-thread SVs that the template thread used */
3452 svp = AvARRAY(t->threadsv);
93965878 3453 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3454 if (*svp && *svp != &PL_sv_undef) {
199100c8 3455 SV *sv = newSVsv(*svp);
54b9620d 3456 av_store(thr->threadsv, i, sv);
533c011a 3457 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3458 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3459 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3460 }
3461 }
940cb80d 3462 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3463
533c011a
NIS		 3464 MUTEX_LOCK(&PL_threads_mutex);
3465 PL_nthreads++;
3466 thr->tid = ++PL_threadnum;
199100c8
MB		 3467 thr->next = t->next;
3468 thr->prev = t;
3469 t->next = thr;
3470 thr->next->prev = thr;
533c011a 3471 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3472
b099ddc0
GS		 3473 /* done copying parent's state */
3474 MUTEX_UNLOCK(&t->mutex);
3475
a863c7d1 3476#ifdef HAVE_THREAD_INTERN
4f63d024 3477 Perl_init_thread_intern(thr);
a863c7d1 3478#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3479 return thr;
3480}
11343788 3481#endif /* USE_THREADS */
760ac839
LW		 3482
3483#ifdef HUGE_VAL
3484/*
3485 * This hack is to force load of "huge" support from libm.a
3486 * So it is in perl for (say) POSIX to use.
3487 * Needed for SunOS with Sun's 'acc' for example.
3488 */
65202027 3489NV
8ac85365 3490Perl_huge(void)
760ac839
LW		 3491{
3492 return HUGE_VAL;
3493}
3494#endif
4e35701f 3495
22239a37
NIS		 3496#ifdef PERL_GLOBAL_STRUCT
3497struct perl_vars *
864dbfa3 3498Perl_GetVars(pTHX)
22239a37 3499{
533c011a 3500 return &PL_Vars;
22239a37 3501}
31fb1209
NIS		 3502#endif
3503
3504char **
864dbfa3 3505Perl_get_op_names(pTHX)
31fb1209 3506{
22c35a8c 3507 return PL_op_name;
31fb1209
NIS		 3508}
3509
3510char **
864dbfa3 3511Perl_get_op_descs(pTHX)
31fb1209 3512{
22c35a8c 3513 return PL_op_desc;
31fb1209 3514}
9e6b2b00
GS		 3515
3516char *
864dbfa3 3517Perl_get_no_modify(pTHX)
9e6b2b00 3518{
22c35a8c 3519 return (char*)PL_no_modify;
9e6b2b00
GS		 3520}
3521
3522U32 *
864dbfa3 3523Perl_get_opargs(pTHX)
9e6b2b00 3524{
22c35a8c 3525 return PL_opargs;
9e6b2b00 3526}
51aa15f3 3527
0cb96387
GS		 3528PPADDR_t*
3529Perl_get_ppaddr(pTHX)
3530{
3531 return &PL_ppaddr;
3532}
3533
a6c40364
GS		 3534#ifndef HAS_GETENV_LEN
3535char *
864dbfa3 3536Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3537{
3538 char *env_trans = PerlEnv_getenv(env_elem);
3539 if (env_trans)
3540 *len = strlen(env_trans);
3541 return env_trans;
f675dbe5
CB		 3542}
3543#endif
3544
dc9e4912
GS		 3545
3546MGVTBL*
864dbfa3 3547Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3548{
3549 MGVTBL* result = Null(MGVTBL*);
3550
3551 switch(vtbl_id) {
3552 case want_vtbl_sv:
3553 result = &PL_vtbl_sv;
3554 break;
3555 case want_vtbl_env:
3556 result = &PL_vtbl_env;
3557 break;
3558 case want_vtbl_envelem:
3559 result = &PL_vtbl_envelem;
3560 break;
3561 case want_vtbl_sig:
3562 result = &PL_vtbl_sig;
3563 break;
3564 case want_vtbl_sigelem:
3565 result = &PL_vtbl_sigelem;
3566 break;
3567 case want_vtbl_pack:
3568 result = &PL_vtbl_pack;
3569 break;
3570 case want_vtbl_packelem:
3571 result = &PL_vtbl_packelem;
3572 break;
3573 case want_vtbl_dbline:
3574 result = &PL_vtbl_dbline;
3575 break;
3576 case want_vtbl_isa:
3577 result = &PL_vtbl_isa;
3578 break;
3579 case want_vtbl_isaelem:
3580 result = &PL_vtbl_isaelem;
3581 break;
3582 case want_vtbl_arylen:
3583 result = &PL_vtbl_arylen;
3584 break;
3585 case want_vtbl_glob:
3586 result = &PL_vtbl_glob;
3587 break;
3588 case want_vtbl_mglob:
3589 result = &PL_vtbl_mglob;
3590 break;
3591 case want_vtbl_nkeys:
3592 result = &PL_vtbl_nkeys;
3593 break;
3594 case want_vtbl_taint:
3595 result = &PL_vtbl_taint;
3596 break;
3597 case want_vtbl_substr:
3598 result = &PL_vtbl_substr;
3599 break;
3600 case want_vtbl_vec:
3601 result = &PL_vtbl_vec;
3602 break;
3603 case want_vtbl_pos:
3604 result = &PL_vtbl_pos;
3605 break;
3606 case want_vtbl_bm:
3607 result = &PL_vtbl_bm;
3608 break;
3609 case want_vtbl_fm:
3610 result = &PL_vtbl_fm;
3611 break;
3612 case want_vtbl_uvar:
3613 result = &PL_vtbl_uvar;
3614 break;
3615#ifdef USE_THREADS
3616 case want_vtbl_mutex:
3617 result = &PL_vtbl_mutex;
3618 break;
3619#endif
3620 case want_vtbl_defelem:
3621 result = &PL_vtbl_defelem;
3622 break;
3623 case want_vtbl_regexp:
3624 result = &PL_vtbl_regexp;
3625 break;
3626 case want_vtbl_regdata:
3627 result = &PL_vtbl_regdata;
3628 break;
3629 case want_vtbl_regdatum:
3630 result = &PL_vtbl_regdatum;
3631 break;
3c90161d 3632#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3633 case want_vtbl_collxfrm:
3634 result = &PL_vtbl_collxfrm;
3635 break;
3c90161d 3636#endif
dc9e4912
GS		 3637 case want_vtbl_amagic:
3638 result = &PL_vtbl_amagic;
3639 break;
3640 case want_vtbl_amagicelem:
3641 result = &PL_vtbl_amagicelem;
3642 break;
810b8aa5
GS		 3643 case want_vtbl_backref:
3644 result = &PL_vtbl_backref;
3645 break;
dc9e4912
GS		 3646 }
3647 return result;
3648}
3649
767df6a1 3650I32
864dbfa3 3651Perl_my_fflush_all(pTHX)
767df6a1
JH		 3652{
3653#ifdef FFLUSH_NULL
ce720889 3654 return PerlIO_flush(NULL);
767df6a1
JH		 3655#else
3656 long open_max = -1;
ed39a0f2 3657# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3658# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3659 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3660# else
767df6a1
JH		 3661# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3662 open_max = sysconf(_SC_OPEN_MAX);
3663# else
3664# ifdef FOPEN_MAX
d2201af2 3665 open_max = FOPEN_MAX;
767df6a1
JH		 3666# else
3667# ifdef OPEN_MAX
d2201af2 3668 open_max = OPEN_MAX;