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For some odd reason #4056 didn't undo #3922 completely.
[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
06bf62c7 1382SV *
864dbfa3 1383Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1384{
e72dc28c 1385 SV *sv = mess_alloc();
46fc3d4c 1386 static char dgd[] = " during global destruction.\n";
1387
fc36a67e 1388 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1389 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1390 dTHR;
cf2093f6 1391#ifdef IV_IS_QUAD
b9c39e73 1392 if (PL_curcop->cop_line)
cf2093f6
JH		 1393 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1394 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1395#else
b9c39e73 1396 if (PL_curcop->cop_line)
cea2e8a9 1397 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1398 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1399#endif
515f54a1
GS		 1400 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1401 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1402 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cf2093f6
JH		 1403#ifdef IV_IS_QUAD
1404 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1405 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1406 line_mode ? "line" : "chunk",
1407 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1408#else
cea2e8a9 1409 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS		 1410 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1411 line_mode ? "line" : "chunk",
1412 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1413#endif
a687059c 1414 }
9efbc0eb 1415#ifdef USE_THREADS
e8e6f333
GS		 1416 if (thr->tid)
1417 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1418#endif
515f54a1 1419 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1420 }
06bf62c7 1421 return sv;
a687059c
LW		 1422}
1423
c5be433b
GS		 1424OP *
1425Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1426{
5dc0d613 1427 dTHR;
36477c24 1428 char *message;
3280af22 1429 int was_in_eval = PL_in_eval;
36477c24 1430 HV *stash;
1431 GV *gv;
1432 CV *cv;
06bf62c7
GS		 1433 SV *msv;
1434 STRLEN msglen;
36477c24 1435
8b73bbec 1436 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1437 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1438 thr, PL_curstack, PL_mainstack));
36477c24 1439
06bf62c7 1440 if (pat) {
cea2e8a9 1441 msv = mess(pat, args);
06bf62c7
GS		 1442 message = SvPV(msv,msglen);
1443 }
1444 else {
1445 message = Nullch;
1446 }
36477c24 1447
8b73bbec 1448 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1449 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1450 thr, message, PL_diehook));
3280af22 1451 if (PL_diehook) {
cea2e8a9 1452 /* sv_2cv might call Perl_croak() */
3280af22 1453 SV *olddiehook = PL_diehook;
1738f5c4 1454 ENTER;
3280af22
NIS		 1455 SAVESPTR(PL_diehook);
1456 PL_diehook = Nullsv;
1738f5c4
CS		 1457 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1458 LEAVE;
1459 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1460 dSP;
774d564b 1461 SV *msg;
1462
1463 ENTER;
79cb57f6 1464 if (message) {
06bf62c7 1465 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1466 SvREADONLY_on(msg);
1467 SAVEFREESV(msg);
1468 }
1469 else {
1470 msg = ERRSV;
1471 }
1738f5c4 1472
e788e7d3 1473 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1474 PUSHMARK(SP);
1738f5c4
CS		 1475 XPUSHs(msg);
1476 PUTBACK;
a7c6d244
NIS		 1477 /* HACK - REVISIT - avoid CATCH_SET(TRUE) in call_sv()
1478 or we come back here due to a JMPENV_JMP() and do
1479 a POPSTACK - but die_where() will have already done
1480 one as it unwound - NI-S 1999/08/14 */
1481 call_sv((SV*)cv, G_DISCARD|G_NOCATCH);
d3acc0f7 1482 POPSTACK;
774d564b 1483 LEAVE;
1738f5c4 1484 }
36477c24 1485 }
1486
06bf62c7 1487 PL_restartop = die_where(message, msglen);
8b73bbec 1488 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1489 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1490 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1491 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1492 JMPENV_JUMP(3);
3280af22 1493 return PL_restartop;
36477c24 1494}
1495
c5be433b 1496#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1497OP *
1498Perl_die_nocontext(const char* pat, ...)
a687059c 1499{
cea2e8a9
GS		 1500 dTHX;
1501 OP *o;
a687059c 1502 va_list args;
cea2e8a9 1503 va_start(args, pat);
c5be433b 1504 o = vdie(pat, &args);
cea2e8a9
GS		 1505 va_end(args);
1506 return o;
1507}
c5be433b 1508#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1509
1510OP *
1511Perl_die(pTHX_ const char* pat, ...)
1512{
1513 OP *o;
1514 va_list args;
1515 va_start(args, pat);
c5be433b 1516 o = vdie(pat, &args);
cea2e8a9
GS		 1517 va_end(args);
1518 return o;
1519}
1520
c5be433b
GS		 1521void
1522Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1523{
1524 dTHR;
de3bb511 1525 char *message;
748a9306
LW		 1526 HV *stash;
1527 GV *gv;
1528 CV *cv;
06bf62c7
GS		 1529 SV *msv;
1530 STRLEN msglen;
a687059c 1531
cea2e8a9 1532 msv = mess(pat, args);
06bf62c7 1533 message = SvPV(msv,msglen);
8b73bbec 1534 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1535 if (PL_diehook) {
cea2e8a9 1536 /* sv_2cv might call Perl_croak() */
3280af22 1537 SV *olddiehook = PL_diehook;
1738f5c4 1538 ENTER;
3280af22
NIS		 1539 SAVESPTR(PL_diehook);
1540 PL_diehook = Nullsv;
20cec16a 1541 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1542 LEAVE;
1543 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1544 dSP;
774d564b 1545 SV *msg;
1546
1547 ENTER;
06bf62c7 1548 msg = newSVpvn(message, msglen);
774d564b 1549 SvREADONLY_on(msg);
1550 SAVEFREESV(msg);
20cec16a 1551
e788e7d3 1552 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1553 PUSHMARK(SP);
1738f5c4 1554 XPUSHs(msg);
20cec16a 1555 PUTBACK;
864dbfa3 1556 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1557 POPSTACK;
774d564b 1558 LEAVE;
20cec16a 1559 }
748a9306 1560 }
3280af22 1561 if (PL_in_eval) {
06bf62c7 1562 PL_restartop = die_where(message, msglen);
6224f72b 1563 JMPENV_JUMP(3);
a0d0e21e 1564 }
d175a3f0
GS		 1565 {
1566#ifdef USE_SFIO
1567 /* SFIO can really mess with your errno */
1568 int e = errno;
1569#endif
06bf62c7 1570 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS		 1571 (void)PerlIO_flush(PerlIO_stderr());
1572#ifdef USE_SFIO
1573 errno = e;
1574#endif
1575 }
f86702cc 1576 my_failure_exit();
a687059c
LW		 1577}
1578
c5be433b 1579#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1580void
cea2e8a9 1581Perl_croak_nocontext(const char *pat, ...)
a687059c 1582{
cea2e8a9 1583 dTHX;
a687059c 1584 va_list args;
cea2e8a9 1585 va_start(args, pat);
c5be433b 1586 vcroak(pat, &args);
cea2e8a9
GS		 1587 /* NOTREACHED */
1588 va_end(args);
1589}
1590#endif /* PERL_IMPLICIT_CONTEXT */
1591
1592void
1593Perl_croak(pTHX_ const char *pat, ...)
1594{
1595 va_list args;
1596 va_start(args, pat);
c5be433b 1597 vcroak(pat, &args);
cea2e8a9
GS		 1598 /* NOTREACHED */
1599 va_end(args);
1600}
1601
c5be433b
GS		 1602void
1603Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1604{
de3bb511 1605 char *message;
748a9306
LW		 1606 HV *stash;
1607 GV *gv;
1608 CV *cv;
06bf62c7
GS		 1609 SV *msv;
1610 STRLEN msglen;
a687059c 1611
cea2e8a9 1612 msv = mess(pat, args);
06bf62c7 1613 message = SvPV(msv, msglen);
a687059c 1614
3280af22 1615 if (PL_warnhook) {
cea2e8a9 1616 /* sv_2cv might call Perl_warn() */
11343788 1617 dTHR;
3280af22 1618 SV *oldwarnhook = PL_warnhook;
1738f5c4 1619 ENTER;
3280af22
NIS		 1620 SAVESPTR(PL_warnhook);
1621 PL_warnhook = Nullsv;
20cec16a 1622 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1623 LEAVE;
1624 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1625 dSP;
774d564b 1626 SV *msg;
1627
1628 ENTER;
06bf62c7 1629 msg = newSVpvn(message, msglen);
774d564b 1630 SvREADONLY_on(msg);
1631 SAVEFREESV(msg);
1632
e788e7d3 1633 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1634 PUSHMARK(SP);
774d564b 1635 XPUSHs(msg);
20cec16a 1636 PUTBACK;
864dbfa3 1637 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1638 POPSTACK;
774d564b 1639 LEAVE;
20cec16a 1640 return;
1641 }
748a9306 1642 }
06bf62c7 1643 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1644#ifdef LEAKTEST
8c52afec
IZ		 1645 DEBUG_L(*message == '!'
1646 ? (xstat(message[1]=='!'
1647 ? (message[2]=='!' ? 2 : 1)
1648 : 0)
1649 , 0)
1650 : 0);
a687059c 1651#endif
20cec16a 1652 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1653}
8d063cd8 1654
c5be433b 1655#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1656void
1657Perl_warn_nocontext(const char *pat, ...)
1658{
1659 dTHX;
1660 va_list args;
1661 va_start(args, pat);
c5be433b 1662 vwarn(pat, &args);
cea2e8a9
GS		 1663 va_end(args);
1664}
1665#endif /* PERL_IMPLICIT_CONTEXT */
1666
1667void
1668Perl_warn(pTHX_ const char *pat, ...)
1669{
1670 va_list args;
1671 va_start(args, pat);
c5be433b 1672 vwarn(pat, &args);
cea2e8a9
GS		 1673 va_end(args);
1674}
1675
c5be433b
GS		 1676#if defined(PERL_IMPLICIT_CONTEXT)
1677void
1678Perl_warner_nocontext(U32 err, const char *pat, ...)
1679{
1680 dTHX;
1681 va_list args;
1682 va_start(args, pat);
1683 vwarner(err, pat, &args);
1684 va_end(args);
1685}
1686#endif /* PERL_IMPLICIT_CONTEXT */
1687
599cee73 1688void
864dbfa3 1689Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1690{
1691 va_list args;
c5be433b
GS		 1692 va_start(args, pat);
1693 vwarner(err, pat, &args);
1694 va_end(args);
1695}
1696
1697void
1698Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1699{
1700 dTHR;
599cee73
PM		 1701 char *message;
1702 HV *stash;
1703 GV *gv;
1704 CV *cv;
06bf62c7
GS		 1705 SV *msv;
1706 STRLEN msglen;
599cee73 1707
c5be433b 1708 msv = mess(pat, args);
06bf62c7 1709 message = SvPV(msv, msglen);
599cee73
PM		 1710
1711 if (ckDEAD(err)) {
1712#ifdef USE_THREADS
d008e5eb 1713 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM		 1714#endif /* USE_THREADS */
1715 if (PL_diehook) {
cea2e8a9 1716 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1717 SV *olddiehook = PL_diehook;
1718 ENTER;
1719 SAVESPTR(PL_diehook);
1720 PL_diehook = Nullsv;
1721 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1722 LEAVE;
1723 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1724 dSP;
1725 SV *msg;
1726
1727 ENTER;
06bf62c7 1728 msg = newSVpvn(message, msglen);
599cee73
PM		 1729 SvREADONLY_on(msg);
1730 SAVEFREESV(msg);
1731
1732 PUSHMARK(sp);
1733 XPUSHs(msg);
1734 PUTBACK;
864dbfa3 1735 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1736
1737 LEAVE;
1738 }
1739 }
1740 if (PL_in_eval) {
06bf62c7 1741 PL_restartop = die_where(message, msglen);
599cee73
PM		 1742 JMPENV_JUMP(3);
1743 }
06bf62c7 1744 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1745 (void)PerlIO_flush(PerlIO_stderr());
1746 my_failure_exit();
1747
1748 }
1749 else {
1750 if (PL_warnhook) {
cea2e8a9 1751 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1752 dTHR;
1753 SV *oldwarnhook = PL_warnhook;
1754 ENTER;
1755 SAVESPTR(PL_warnhook);
1756 PL_warnhook = Nullsv;
1757 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1758 LEAVE;
1759 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1760 dSP;
1761 SV *msg;
1762
1763 ENTER;
06bf62c7 1764 msg = newSVpvn(message, msglen);
599cee73
PM		 1765 SvREADONLY_on(msg);
1766 SAVEFREESV(msg);
1767
1768 PUSHMARK(sp);
1769 XPUSHs(msg);
1770 PUTBACK;
864dbfa3 1771 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1772
1773 LEAVE;
1774 return;
1775 }
1776 }
06bf62c7 1777 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1778#ifdef LEAKTEST
1779 DEBUG_L(xstat());
1780#endif
1781 (void)PerlIO_flush(PerlIO_stderr());
1782 }
1783}
1784
a0d0e21e 1785#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1786#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1787void
864dbfa3 1788Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1789{
f2517201
GS		 1790#ifndef PERL_USE_SAFE_PUTENV
1791 /* most putenv()s leak, so we manipulate environ directly */
79072805 1792 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1793
3280af22 1794 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1795 I32 j;
1796 I32 max;
fe14fcc3
LW		 1797 char **tmpenv;
1798
de3bb511 1799 /*SUPPRESS 530*/
fe14fcc3 1800 for (max = i; environ[max]; max++) ;
f2517201
GS		 1801 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1802 for (j=0; j<max; j++) { /* copy environment */
1803 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1804 strcpy(tmpenv[j], environ[j]);
1805 }
fe14fcc3
LW		 1806 tmpenv[max] = Nullch;
1807 environ = tmpenv; /* tell exec where it is now */
1808 }
a687059c 1809 if (!val) {
f2517201 1810 safesysfree(environ[i]);
a687059c
LW		 1811 while (environ[i]) {
1812 environ[i] = environ[i+1];
1813 i++;
1814 }
1815 return;
1816 }
8d063cd8 1817 if (!environ[i]) { /* does not exist yet */
f2517201 1818 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1819 environ[i+1] = Nullch; /* make sure it's null terminated */
1820 }
fe14fcc3 1821 else
f2517201
GS		 1822 safesysfree(environ[i]);
1823 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1824
62b28dd9 1825#ifndef MSDOS
a687059c 1826 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW		 1827#else
1828 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW		 1829 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1830 * some utilities and applications may break because they only look
1831 * for upper case strings. (Fixed strupr() bug here.)]
1832 */
1833 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW		 1834 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1835#endif /* MSDOS */
f2517201
GS		 1836
1837#else /* PERL_USE_SAFE_PUTENV */
1838 char *new_env;
1839
1840 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1841#ifndef MSDOS
1842 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1843#else
1844 strcpy(new_env,nam); strupr(new_env);
1845 (void)sprintf(new_env + strlen(nam),"=%s",val);
1846#endif
1847 (void)putenv(new_env);
1848#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1849}
1850
2c2d71f5
JH		 1851#else /* WIN32 || CYGWIN */
1852#if defined(CYGWIN)
1cab015a
EF		 1853/*
1854 * Save environ of perl.exe, currently Cygwin links in separate environ's
1855 * for each exe/dll. Probably should be a member of impure_ptr.
1856 */
1857static char ***Perl_main_environ;
1858
1859EXTERN_C void
1860Perl_my_setenv_init(char ***penviron)
1861{
1862 Perl_main_environ = penviron;
1863}
1864
1865void
1866my_setenv(char *nam, char *val)
1867{
1868 /* You can not directly manipulate the environ[] array because
1869 * the routines do some additional work that syncs the Cygwin
1870 * environment with the Windows environment.
1871 */
1872 char *oldstr = environ[setenv_getix(nam)];
1873
1874 if (!val) {
1875 if (!oldstr)
1876 return;
1877 unsetenv(nam);
1878 Safefree(oldstr);
1879 return;
1880 }
1881 setenv(nam, val, 1);
1882 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1883 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1884 Safefree(oldstr);
1885}
3e3baf6d 1886#else /* if WIN32 */
68dc0745 1887
1888void
864dbfa3 1889Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1890{
3e3baf6d
TB		 1891
1892#ifdef USE_WIN32_RTL_ENV
1893
68dc0745 1894 register char *envstr;
1895 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1896 STRLEN vallen;
1897 char *oldstr = environ[setenv_getix(nam)];
1898
1899 /* putenv() has totally broken semantics in both the Borland
1900 * and Microsoft CRTLs. They either store the passed pointer in
1901 * the environment without making a copy, or make a copy and don't
1902 * free it. And on top of that, they dont free() old entries that
1903 * are being replaced/deleted. This means the caller must
1904 * free any old entries somehow, or we end up with a memory
1905 * leak every time my_setenv() is called. One might think
1906 * one could directly manipulate environ[], like the UNIX code
1907 * above, but direct changes to environ are not allowed when
1908 * calling putenv(), since the RTLs maintain an internal
1909 * *copy* of environ[]. Bad, bad, *bad* stink.
1910 * GSAR 97-06-07
1911 */
68dc0745 1912
3e3baf6d
TB		 1913 if (!val) {
1914 if (!oldstr)
1915 return;
1916 val = "";
1917 vallen = 0;
1918 }
1919 else
1920 vallen = strlen(val);
f2517201 1921 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1922 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1923 (void)PerlEnv_putenv(envstr);
3e3baf6d 1924 if (oldstr)
f2517201 1925 safesysfree(oldstr);
3e3baf6d 1926#ifdef _MSC_VER
f2517201 1927 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1928#endif
1929
1930#else /* !USE_WIN32_RTL_ENV */
1931
ac5c734f
GS		 1932 register char *envstr;
1933 STRLEN len = strlen(nam) + 3;
1934 if (!val) {
1935 val = "";
1936 }
1937 len += strlen(val);
1938 New(904, envstr, len, char);
1939 (void)sprintf(envstr,"%s=%s",nam,val);
1940 (void)PerlEnv_putenv(envstr);
1941 Safefree(envstr);
3e3baf6d
TB		 1942
1943#endif
1944}
1945
1946#endif /* WIN32 */
1cab015a 1947#endif
3e3baf6d
TB		 1948
1949I32
864dbfa3 1950Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 1951{
1952 register I32 i, len = strlen(nam);
1953
1954 for (i = 0; environ[i]; i++) {
1955 if (
1956#ifdef WIN32
1957 strnicmp(environ[i],nam,len) == 0
1958#else
1959 strnEQ(environ[i],nam,len)
1960#endif
1961 && environ[i][len] == '=')
1962 break; /* strnEQ must come first to avoid */
1963 } /* potential SEGV's */
1964 return i;
68dc0745 1965}
1966
a0d0e21e 1967#endif /* !VMS */
378cc40b 1968
16d20bd9 1969#ifdef UNLINK_ALL_VERSIONS
79072805 1970I32
864dbfa3 1971Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1972{
79072805 1973 I32 i;
378cc40b 1974
6ad3d225 1975 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 1976 return i ? 0 : -1;
1977}
1978#endif
1979
85e6fe83 1980#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1981char *
864dbfa3 1982Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 1983{
1984 char *retval = to;
1985
7c0587c8
LW		 1986 if (from - to >= 0) {
1987 while (len--)
1988 *to++ = *from++;
1989 }
1990 else {
1991 to += len;
1992 from += len;
1993 while (len--)
faf8582f 1994 *(--to) = *(--from);
7c0587c8 1995 }
378cc40b
LW		 1996 return retval;
1997}
ffed7fef 1998#endif
378cc40b 1999
fc36a67e 2000#ifndef HAS_MEMSET
2001void *
864dbfa3 2002Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 2003{
2004 char *retval = loc;
2005
2006 while (len--)
2007 *loc++ = ch;
2008 return retval;
2009}
2010#endif
2011
7c0587c8 2012#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2013char *
864dbfa3 2014Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 2015{
2016 char *retval = loc;
2017
2018 while (len--)
2019 *loc++ = 0;
2020 return retval;
2021}
2022#endif
7c0587c8 2023
36477c24 2024#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2025I32
864dbfa3 2026Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2027{
36477c24 2028 register U8 *a = (U8 *)s1;
2029 register U8 *b = (U8 *)s2;
79072805 2030 register I32 tmp;
7c0587c8
LW		 2031
2032 while (len--) {
36477c24 2033 if (tmp = *a++ - *b++)
7c0587c8
LW		 2034 return tmp;
2035 }
2036 return 0;
2037}
36477c24 2038#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2039
fe14fcc3 2040#ifndef HAS_VPRINTF
a687059c 2041
85e6fe83 2042#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2043char *
2044#else
2045int
2046#endif
08105a92 2047vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2048{
2049 FILE fakebuf;
2050
2051 fakebuf._ptr = dest;
2052 fakebuf._cnt = 32767;
35c8bce7
LW		 2053#ifndef _IOSTRG
2054#define _IOSTRG 0
2055#endif
a687059c
LW		 2056 fakebuf._flag = _IOWRT|_IOSTRG;
2057 _doprnt(pat, args, &fakebuf); /* what a kludge */
2058 (void)putc('\0', &fakebuf);
85e6fe83 2059#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2060 return(dest);
2061#else
2062 return 0; /* perl doesn't use return value */
2063#endif
2064}
2065
fe14fcc3 2066#endif /* HAS_VPRINTF */
a687059c
LW		 2067
2068#ifdef MYSWAP
ffed7fef 2069#if BYTEORDER != 0x4321
a687059c 2070short
864dbfa3 2071Perl_my_swap(pTHX_ short s)
a687059c
LW		 2072{
2073#if (BYTEORDER & 1) == 0
2074 short result;
2075
2076 result = ((s & 255) << 8) + ((s >> 8) & 255);
2077 return result;
2078#else
2079 return s;
2080#endif
2081}
2082
2083long
864dbfa3 2084Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2085{
2086 union {
2087 long result;
ffed7fef 2088 char c[sizeof(long)];
a687059c
LW		 2089 } u;
2090
ffed7fef 2091#if BYTEORDER == 0x1234
a687059c
LW		 2092 u.c[0] = (l >> 24) & 255;
2093 u.c[1] = (l >> 16) & 255;
2094 u.c[2] = (l >> 8) & 255;
2095 u.c[3] = l & 255;
2096 return u.result;
2097#else
ffed7fef 2098#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2099 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2100#else
79072805
LW		 2101 register I32 o;
2102 register I32 s;
a687059c 2103
ffed7fef
LW		 2104 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2105 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2106 }
2107 return u.result;
2108#endif
2109#endif
2110}
2111
2112long
864dbfa3 2113Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2114{
2115 union {
2116 long l;
ffed7fef 2117 char c[sizeof(long)];
a687059c
LW		 2118 } u;
2119
ffed7fef 2120#if BYTEORDER == 0x1234
a687059c
LW		 2121 u.c[0] = (l >> 24) & 255;
2122 u.c[1] = (l >> 16) & 255;
2123 u.c[2] = (l >> 8) & 255;
2124 u.c[3] = l & 255;
2125 return u.l;
2126#else
ffed7fef 2127#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2128 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2129#else
79072805
LW		 2130 register I32 o;
2131 register I32 s;
a687059c
LW		 2132
2133 u.l = l;
2134 l = 0;
ffed7fef
LW		 2135 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2136 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2137 }
2138 return l;
2139#endif
2140#endif
2141}
2142
ffed7fef 2143#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2144#endif /* MYSWAP */
2145
2146/*
2147 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2148 * If these functions are defined,
2149 * the BYTEORDER is neither 0x1234 nor 0x4321.
2150 * However, this is not assumed.
2151 * -DWS
2152 */
2153
2154#define HTOV(name,type) \
2155 type \
ba106d47 2156 name (register type n) \
988174c1
LW		 2157 { \
2158 union { \
2159 type value; \
2160 char c[sizeof(type)]; \
2161 } u; \
79072805
LW		 2162 register I32 i; \
2163 register I32 s; \
988174c1
LW		 2164 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2165 u.c[i] = (n >> s) & 0xFF; \
2166 } \
2167 return u.value; \
2168 }
2169
2170#define VTOH(name,type) \
2171 type \
ba106d47 2172 name (register type n) \
988174c1
LW		 2173 { \
2174 union { \
2175 type value; \
2176 char c[sizeof(type)]; \
2177 } u; \
79072805
LW		 2178 register I32 i; \
2179 register I32 s; \
988174c1
LW		 2180 u.value = n; \
2181 n = 0; \
2182 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2183 n += (u.c[i] & 0xFF) << s; \
2184 } \
2185 return n; \
2186 }
2187
2188#if defined(HAS_HTOVS) && !defined(htovs)
2189HTOV(htovs,short)
2190#endif
2191#if defined(HAS_HTOVL) && !defined(htovl)
2192HTOV(htovl,long)
2193#endif
2194#if defined(HAS_VTOHS) && !defined(vtohs)
2195VTOH(vtohs,short)
2196#endif
2197#if defined(HAS_VTOHL) && !defined(vtohl)
2198VTOH(vtohl,long)
2199#endif
a687059c 2200
5f05dabc 2201 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2202#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2203PerlIO *
864dbfa3 2204Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2205{
2206 int p[2];
8ac85365 2207 register I32 This, that;
d8a83dd3 2208 register Pid_t pid;
79072805 2209 SV *sv;
1738f5c4 2210 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2211 I32 did_pipes = 0;
2212 int pp[2];
a687059c 2213
45bc9206 2214 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2215#ifdef OS2
2216 if (doexec) {
2217 return my_syspopen(cmd,mode);
2218 }
2219#endif
8ac85365
NIS		 2220 This = (*mode == 'w');
2221 that = !This;
3280af22 2222 if (doexec && PL_tainting) {
bbce6d69 2223 taint_env();
2224 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2225 }
c2267164
IZ		 2226 if (PerlProc_pipe(p) < 0)
2227 return Nullfp;
e446cec8
IZ		 2228 if (doexec && PerlProc_pipe(pp) >= 0)
2229 did_pipes = 1;
a687059c
LW		 2230 while ((pid = (doexec?vfork():fork())) < 0) {
2231 if (errno != EAGAIN) {
6ad3d225 2232 PerlLIO_close(p[This]);
e446cec8
IZ		 2233 if (did_pipes) {
2234 PerlLIO_close(pp[0]);
2235 PerlLIO_close(pp[1]);
2236 }
a687059c 2237 if (!doexec)
cea2e8a9 2238 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2239 return Nullfp;
2240 }
2241 sleep(5);
2242 }
2243 if (pid == 0) {
79072805
LW		 2244 GV* tmpgv;
2245
30ac6d9b
GS		 2246#undef THIS
2247#undef THAT
a687059c 2248#define THIS that
8ac85365 2249#define THAT This
6ad3d225 2250 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2251 if (did_pipes) {
2252 PerlLIO_close(pp[0]);
2253#if defined(HAS_FCNTL) && defined(F_SETFD)
2254 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2255#endif
2256 }
a687059c 2257 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2258 PerlLIO_dup2(p[THIS], *mode == 'r');
2259 PerlLIO_close(p[THIS]);
a687059c 2260 }
4435c477 2261#ifndef OS2
a687059c 2262 if (doexec) {
a0d0e21e 2263#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2264 int fd;
2265
2266#ifndef NOFILE
2267#define NOFILE 20
2268#endif
6b88bc9c 2269 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2270 if (fd != pp[1])
2271 PerlLIO_close(fd);
ae986130 2272#endif
e446cec8 2273 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2274 PerlProc__exit(1);
a687059c 2275 }
4435c477 2276#endif /* defined OS2 */
de3bb511 2277 /*SUPPRESS 560*/
85e6fe83 2278 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2279 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS		 2280 PL_forkprocess = 0;
2281 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2282 return Nullfp;
2283#undef THIS
2284#undef THAT
2285 }
62b28dd9 2286 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2287 PerlLIO_close(p[that]);
e446cec8
IZ		 2288 if (did_pipes)
2289 PerlLIO_close(pp[1]);
8ac85365 2290 if (p[that] < p[This]) {
6ad3d225
GS		 2291 PerlLIO_dup2(p[This], p[that]);
2292 PerlLIO_close(p[This]);
8ac85365 2293 p[This] = p[that];
62b28dd9 2294 }
3280af22 2295 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2296 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2297 SvIVX(sv) = pid;
3280af22 2298 PL_forkprocess = pid;
e446cec8
IZ		 2299 if (did_pipes && pid > 0) {
2300 int errkid;
2301 int n = 0, n1;
2302
2303 while (n < sizeof(int)) {
2304 n1 = PerlLIO_read(pp[0],
2305 (void*)(((char*)&errkid)+n),
2306 (sizeof(int)) - n);
2307 if (n1 <= 0)
2308 break;
2309 n += n1;
2310 }
2f96c702
IZ		 2311 PerlLIO_close(pp[0]);
2312 did_pipes = 0;
e446cec8
IZ		 2313 if (n) { /* Error */
2314 if (n != sizeof(int))
cea2e8a9 2315 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2316 errno = errkid; /* Propagate errno from kid */
2317 return Nullfp;
2318 }
2319 }
2320 if (did_pipes)
2321 PerlLIO_close(pp[0]);
8ac85365 2322 return PerlIO_fdopen(p[This], mode);
a687059c 2323}
7c0587c8 2324#else
55497cff 2325#if defined(atarist) || defined(DJGPP)
7c0587c8 2326FILE *popen();
760ac839 2327PerlIO *
864dbfa3 2328Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2329{
760ac839 2330 /* Needs work for PerlIO ! */
55497cff 2331 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2332 PERL_FLUSHALL_FOR_CHILD;
55497cff 2333 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2334}
2335#endif
2336
2337#endif /* !DOSISH */
a687059c 2338
748a9306 2339#ifdef DUMP_FDS
35ff7856 2340void
864dbfa3 2341Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2342{
2343 int fd;
2344 struct stat tmpstatbuf;
2345
760ac839 2346 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2347 for (fd = 0; fd < 32; fd++) {
6ad3d225 2348 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2349 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2350 }
760ac839 2351 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2352}
35ff7856 2353#endif /* DUMP_FDS */
ae986130 2354
fe14fcc3 2355#ifndef HAS_DUP2
fec02dd3 2356int
ba106d47 2357dup2(int oldfd, int newfd)
a687059c 2358{
a0d0e21e 2359#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2360 if (oldfd == newfd)
2361 return oldfd;
6ad3d225 2362 PerlLIO_close(newfd);
fec02dd3 2363 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2364#else
fc36a67e 2365#define DUP2_MAX_FDS 256
2366 int fdtmp[DUP2_MAX_FDS];
79072805 2367 I32 fdx = 0;
ae986130
LW		 2368 int fd;
2369
fe14fcc3 2370 if (oldfd == newfd)
fec02dd3 2371 return oldfd;
6ad3d225 2372 PerlLIO_close(newfd);
fc36a67e 2373 /* good enough for low fd's... */
6ad3d225 2374 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2375 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2376 PerlLIO_close(fd);
fc36a67e 2377 fd = -1;
2378 break;
2379 }
ae986130 2380 fdtmp[fdx++] = fd;
fc36a67e 2381 }
ae986130 2382 while (fdx > 0)
6ad3d225 2383 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2384 return fd;
62b28dd9 2385#endif
a687059c
LW		 2386}
2387#endif
2388
ff68c719 2389
2390#ifdef HAS_SIGACTION
2391
2392Sighandler_t
864dbfa3 2393Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2394{
2395 struct sigaction act, oact;
2396
2397 act.sa_handler = handler;
2398 sigemptyset(&act.sa_mask);
2399 act.sa_flags = 0;
2400#ifdef SA_RESTART
2401 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2402#endif
85264bed
CS		 2403#ifdef SA_NOCLDWAIT
2404 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2405 act.sa_flags |= SA_NOCLDWAIT;
2406#endif
ff68c719 2407 if (sigaction(signo, &act, &oact) == -1)
36477c24 2408 return SIG_ERR;
ff68c719 2409 else
36477c24 2410 return oact.sa_handler;
ff68c719 2411}
2412
2413Sighandler_t
864dbfa3 2414Perl_rsignal_state(pTHX_ int signo)
ff68c719 2415{
2416 struct sigaction oact;
2417
2418 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2419 return SIG_ERR;
2420 else
2421 return oact.sa_handler;
2422}
2423
2424int
864dbfa3 2425Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2426{
2427 struct sigaction act;
2428
2429 act.sa_handler = handler;
2430 sigemptyset(&act.sa_mask);
2431 act.sa_flags = 0;
2432#ifdef SA_RESTART
2433 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2434#endif
85264bed
CS		 2435#ifdef SA_NOCLDWAIT
2436 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2437 act.sa_flags |= SA_NOCLDWAIT;
2438#endif
ff68c719 2439 return sigaction(signo, &act, save);
2440}
2441
2442int
864dbfa3 2443Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2444{
2445 return sigaction(signo, save, (struct sigaction *)NULL);
2446}
2447
2448#else /* !HAS_SIGACTION */
2449
2450Sighandler_t
864dbfa3 2451Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2452{
6ad3d225 2453 return PerlProc_signal(signo, handler);
ff68c719 2454}
2455
2456static int sig_trapped;
2457
2458static
2459Signal_t
4e35701f 2460sig_trap(int signo)
ff68c719 2461{
2462 sig_trapped++;
2463}
2464
2465Sighandler_t
864dbfa3 2466Perl_rsignal_state(pTHX_ int signo)
ff68c719 2467{
2468 Sighandler_t oldsig;
2469
2470 sig_trapped = 0;
6ad3d225
GS		 2471 oldsig = PerlProc_signal(signo, sig_trap);
2472 PerlProc_signal(signo, oldsig);
ff68c719 2473 if (sig_trapped)
6ad3d225 2474 PerlProc_kill(getpid(), signo);
ff68c719 2475 return oldsig;
2476}
2477
2478int
864dbfa3 2479Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2480{
6ad3d225 2481 *save = PerlProc_signal(signo, handler);
ff68c719 2482 return (*save == SIG_ERR) ? -1 : 0;
2483}
2484
2485int
864dbfa3 2486Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2487{
6ad3d225 2488 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2489}
2490
2491#endif /* !HAS_SIGACTION */
2492
5f05dabc 2493 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2494#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2495I32
864dbfa3 2496Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2497{
ff68c719 2498 Sigsave_t hstat, istat, qstat;
a687059c 2499 int status;
a0d0e21e 2500 SV **svp;
d8a83dd3
JH		 2501 Pid_t pid;
2502 Pid_t pid2;
03136e13
CS		 2503 bool close_failed;
2504 int saved_errno;
2505#ifdef VMS
2506 int saved_vaxc_errno;
2507#endif
22fae026
TM		 2508#ifdef WIN32
2509 int saved_win32_errno;
2510#endif
a687059c 2511
3280af22 2512 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2513 pid = SvIVX(*svp);
a0d0e21e 2514 SvREFCNT_dec(*svp);
3280af22 2515 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2516#ifdef OS2
2517 if (pid == -1) { /* Opened by popen. */
2518 return my_syspclose(ptr);
2519 }
2520#endif
03136e13
CS		 2521 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2522 saved_errno = errno;
2523#ifdef VMS
2524 saved_vaxc_errno = vaxc$errno;
2525#endif
22fae026
TM		 2526#ifdef WIN32
2527 saved_win32_errno = GetLastError();
2528#endif
03136e13 2529 }
7c0587c8 2530#ifdef UTS
6ad3d225 2531 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2532#endif
ff68c719 2533 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2534 rsignal_save(SIGINT, SIG_IGN, &istat);
2535 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2536 do {
1d3434b8
GS		 2537 pid2 = wait4pid(pid, &status, 0);
2538 } while (pid2 == -1 && errno == EINTR);
ff68c719 2539 rsignal_restore(SIGHUP, &hstat);
2540 rsignal_restore(SIGINT, &istat);
2541 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2542 if (close_failed) {
2543 SETERRNO(saved_errno, saved_vaxc_errno);
2544 return -1;
2545 }
1d3434b8 2546 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2547}
4633a7c4
LW		 2548#endif /* !DOSISH */
2549
2c2d71f5 2550#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2551I32
d8a83dd3 2552Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2553{
79072805
LW		 2554 SV *sv;
2555 SV** svp;
fc36a67e 2556 char spid[TYPE_CHARS(int)];
20188a90
LW		 2557
2558 if (!pid)
2559 return -1;
20188a90
LW		 2560 if (pid > 0) {
2561 sprintf(spid, "%d", pid);
3280af22
NIS		 2562 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2563 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2564 *statusp = SvIVX(*svp);
3280af22 2565 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2566 return pid;
2567 }
2568 }
2569 else {
79072805 2570 HE *entry;
20188a90 2571
3280af22
NIS		 2572 hv_iterinit(PL_pidstatus);
2573 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2574 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2575 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2576 *statusp = SvIVX(sv);
20188a90 2577 sprintf(spid, "%d", pid);
3280af22 2578 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2579 return pid;
2580 }
2581 }
79072805 2582#ifdef HAS_WAITPID
367f3c24
IZ		 2583# ifdef HAS_WAITPID_RUNTIME
2584 if (!HAS_WAITPID_RUNTIME)
2585 goto hard_way;
2586# endif
f55ee38a 2587 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2588#endif
2589#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2590 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2591#endif
2592#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2593 hard_way:
a0d0e21e
LW		 2594 {
2595 I32 result;
2596 if (flags)
cea2e8a9 2597 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2598 else {
76e3520e 2599 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2600 pidgone(result,*statusp);
2601 if (result < 0)
2602 *statusp = -1;
2603 }
2604 return result;
a687059c
LW		 2605 }
2606#endif
a687059c 2607}
2d7a9237 2608#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2609
7c0587c8 2610void
de3bb511 2611/*SUPPRESS 590*/
d8a83dd3 2612Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2613{
79072805 2614 register SV *sv;
fc36a67e 2615 char spid[TYPE_CHARS(int)];
a687059c 2616
20188a90 2617 sprintf(spid, "%d", pid);
3280af22 2618 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2619 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2620 SvIVX(sv) = status;
20188a90 2621 return;
a687059c
LW		 2622}
2623
55497cff 2624#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2625int pclose();
ddcf38b7
IZ		 2626#ifdef HAS_FORK
2627int /* Cannot prototype with I32
2628 in os2ish.h. */
ba106d47 2629my_syspclose(PerlIO *ptr)
ddcf38b7 2630#else
79072805 2631I32
864dbfa3 2632Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2633#endif
a687059c 2634{
760ac839
LW		 2635 /* Needs work for PerlIO ! */
2636 FILE *f = PerlIO_findFILE(ptr);
2637 I32 result = pclose(f);
2638 PerlIO_releaseFILE(ptr,f);
2639 return result;
a687059c 2640}
7c0587c8 2641#endif
9f68db38
LW		 2642
2643void
864dbfa3 2644Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2645{
79072805 2646 register I32 todo;
08105a92 2647 register const char *frombase = from;
9f68db38
LW		 2648
2649 if (len == 1) {
08105a92 2650 register const char c = *from;
9f68db38 2651 while (count-- > 0)
5926133d 2652 *to++ = c;
9f68db38
LW		 2653 return;
2654 }
2655 while (count-- > 0) {
2656 for (todo = len; todo > 0; todo--) {
2657 *to++ = *from++;
2658 }
2659 from = frombase;
2660 }
2661}
0f85fab0 2662
463ee0b2 2663U32
65202027 2664Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2665{
2666 long along;
2667
27e2fb84 2668#if CASTFLAGS & 2
34de22dd
LW		 2669# define BIGDOUBLE 2147483648.0
2670 if (f >= BIGDOUBLE)
2671 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2672#endif
0f85fab0
LW		 2673 if (f >= 0.0)
2674 return (unsigned long)f;
2675 along = (long)f;
2676 return (unsigned long)along;
2677}
ed6116ce 2678# undef BIGDOUBLE
5d94fbed 2679
5d94fbed
AD		 2680/* Unfortunately, on some systems the cast_uv() function doesn't
2681 work with the system-supplied definition of ULONG_MAX. The
2682 comparison (f >= ULONG_MAX) always comes out true. It must be a
2683 problem with the compiler constant folding.
2684
2685 In any case, this workaround should be fine on any two's complement
2686 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2687 ccflags.
2688 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2689*/
1eb770ff 2690
2691/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2692 of LONG_(MIN/MAX).
2693 -- Kenneth Albanowski <kjahds@kjahds.com>
2694*/
2695
20cec16a 2696#ifndef MY_UV_MAX
2697# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2698#endif
2699
ed6116ce 2700I32
65202027 2701Perl_cast_i32(pTHX_ NV f)
ed6116ce 2702{
20cec16a 2703 if (f >= I32_MAX)
2704 return (I32) I32_MAX;
2705 if (f <= I32_MIN)
2706 return (I32) I32_MIN;
ed6116ce
LW		 2707 return (I32) f;
2708}
a0d0e21e
LW		 2709
2710IV
65202027 2711Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2712{
25da4f38
IZ		 2713 if (f >= IV_MAX) {
2714 UV uv;
2715
65202027 2716 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2717 return (IV) UV_MAX;
2718 uv = (UV) f;
2719 return (IV)uv;
2720 }
20cec16a 2721 if (f <= IV_MIN)
2722 return (IV) IV_MIN;
a0d0e21e
LW		 2723 return (IV) f;
2724}
5d94fbed
AD		 2725
2726UV
65202027 2727Perl_cast_uv(pTHX_ NV f)
5d94fbed 2728{
20cec16a 2729 if (f >= MY_UV_MAX)
2730 return (UV) MY_UV_MAX;
25da4f38
IZ		 2731 if (f < 0) {
2732 IV iv;
2733
2734 if (f < IV_MIN)
2735 return (UV)IV_MIN;
2736 iv = (IV) f;
2737 return (UV) iv;
2738 }
5d94fbed
AD		 2739 return (UV) f;
2740}
2741
fe14fcc3 2742#ifndef HAS_RENAME
79072805 2743I32
864dbfa3 2744Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2745{
93a17b20
LW		 2746 char *fa = strrchr(a,'/');
2747 char *fb = strrchr(b,'/');
62b28dd9
LW		 2748 struct stat tmpstatbuf1;
2749 struct stat tmpstatbuf2;
46fc3d4c 2750 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2751
2752 if (fa)
2753 fa++;
2754 else
2755 fa = a;
2756 if (fb)
2757 fb++;
2758 else
2759 fb = b;
2760 if (strNE(a,b))
2761 return FALSE;
2762 if (fa == a)
46fc3d4c 2763 sv_setpv(tmpsv, ".");
62b28dd9 2764 else
46fc3d4c 2765 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2766 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2767 return FALSE;
2768 if (fb == b)
46fc3d4c 2769 sv_setpv(tmpsv, ".");
62b28dd9 2770 else
46fc3d4c 2771 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2772 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2773 return FALSE;
2774 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2775 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2776}
fe14fcc3
LW		 2777#endif /* !HAS_RENAME */
2778
9e24b6e2 2779NV
864dbfa3 2780Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2781{
2782 register char *s = start;
9e24b6e2
JH		 2783 register NV rnv = 0.0;
2784 register UV ruv = 0;
252aa082 2785 register bool seenb = FALSE;
9e24b6e2 2786 register bool overflowed = FALSE;
252aa082
JH		 2787
2788 for (; len-- && *s; s++) {
2789 if (!(*s == '0' || *s == '1')) {
2790 if (*s == '_')
9e24b6e2 2791 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2792 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2793 /* Disallow 0bbb0b0bbb... */
2794 seenb = TRUE;
252aa082
JH		 2795 continue;
2796 }
2797 else {
2798 dTHR;
627300f0
JH		 2799 if (ckWARN(WARN_DIGIT))
2800 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2801 "Illegal binary digit '%c' ignored", *s);
2802 break;
2803 }
9e24b6e2
JH		 2804 }
2805 if (!overflowed) {
2806 register UV xuv = ruv << 1;
2807
2808 if ((xuv >> 1) != ruv) {
2809 dTHR;
2810 overflowed = TRUE;
2811 rnv = (NV) ruv;
627300f0
JH		 2812 if (ckWARN_d(WARN_OVERFLOW))
2813 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2814 "Integer overflow in binary number");
2815 } else
2816 ruv = xuv | (*s - '0');
2817 }
2818 if (overflowed) {
2819 rnv *= 2;
2820 /* If an NV has not enough bits in its mantissa to
2821 * represent an UV this summing of small low-order numbers
2822 * is a waste of time (because the NV cannot preserve
2823 * the low-order bits anyway): we could just remember when
2824 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2825 * right amount. */
9e24b6e2 2826 rnv += (*s - '0');
f248d071 2827 }
4f19785b 2828 }
9e24b6e2
JH		 2829 if (!overflowed)
2830 rnv = (NV) ruv;
893fe2c2
JH		 2831 if ( ( overflowed && rnv > 4294967295.0)
2832#if UV_SIZEOF > 4
2833 || (!overflowed && ruv > 0xffffffff )
2834#endif
2835 ) {
252aa082 2836 dTHR;
627300f0
JH		 2837 if (ckWARN(WARN_PORTABLE))
2838 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2839 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2840 }
2841 *retlen = s - start;
9e24b6e2 2842 return rnv;
4f19785b 2843}
9e24b6e2
JH		 2844
2845NV
864dbfa3 2846Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2847{
2848 register char *s = start;
9e24b6e2
JH		 2849 register NV rnv = 0.0;
2850 register UV ruv = 0;
2851 register bool overflowed = FALSE;
252aa082
JH		 2852
2853 for (; len-- && *s; s++) {
2854 if (!(*s >= '0' && *s <= '7')) {
2855 if (*s == '_')
9e24b6e2 2856 continue; /* Note: does not check for __ and the like. */
252aa082 2857 else {
f84f607d
JH		 2858 /* Allow \octal to work the DWIM way (that is, stop scanning
2859 * as soon as non-octal characters are seen, complain only iff
2860 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2861 if (*s == '8' || *s == '9') {
2862 dTHR;
627300f0
JH		 2863 if (ckWARN(WARN_DIGIT))
2864 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2865 "Illegal octal digit '%c' ignored", *s);
2866 }
2867 break;
2868 }
55497cff 2869 }
9e24b6e2 2870 if (!overflowed) {
893fe2c2 2871 register UV xuv = ruv << 3;
9e24b6e2
JH		 2872
2873 if ((xuv >> 3) != ruv) {
2874 dTHR;
2875 overflowed = TRUE;
2876 rnv = (NV) ruv;
627300f0
JH		 2877 if (ckWARN_d(WARN_OVERFLOW))
2878 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2879 "Integer overflow in octal number");
2880 } else
2881 ruv = xuv | (*s - '0');
2882 }
2883 if (overflowed) {
2884 rnv *= 8.0;
2885 /* If an NV has not enough bits in its mantissa to
2886 * represent an UV this summing of small low-order numbers
2887 * is a waste of time (because the NV cannot preserve
2888 * the low-order bits anyway): we could just remember when
2889 * did we overflow and in the end just multiply rnv by the
2890 * right amount of 8-tuples. */
2891 rnv += (NV)(*s - '0');
2892 }
fe14fcc3 2893 }
9e24b6e2
JH		 2894 if (!overflowed)
2895 rnv = (NV) ruv;
893fe2c2
JH		 2896 if ( ( overflowed && rnv > 4294967295.0)
2897#if UV_SIZEOF > 4
2898 || (!overflowed && ruv > 0xffffffff )
2899#endif
2900 ) {
d008e5eb 2901 dTHR;
627300f0
JH		 2902 if (ckWARN(WARN_PORTABLE))
2903 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2904 "Octal number > 037777777777 non-portable");
d008e5eb 2905 }
fe14fcc3 2906 *retlen = s - start;
9e24b6e2 2907 return rnv;
fe14fcc3
LW		 2908}
2909
9e24b6e2 2910NV
864dbfa3 2911Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2912{
2913 register char *s = start;
9e24b6e2
JH		 2914 register NV rnv = 0.0;
2915 register UV ruv = 0;
252aa082 2916 register bool seenx = FALSE;
9e24b6e2 2917 register bool overflowed = FALSE;
9e24b6e2 2918 char *hexdigit;
fe14fcc3 2919
9e24b6e2
JH		 2920 for (; len-- && *s; s++) {
2921 hexdigit = strchr((char *) PL_hexdigit, *s);
2922 if (!hexdigit) {
2923 if (*s == '_')
2924 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2925 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 2926 /* Disallow 0xxx0x0xxx... */
2927 seenx = TRUE;
252aa082
JH		 2928 continue;
2929 }
a0ed51b3 2930 else {
d008e5eb 2931 dTHR;
627300f0
JH		 2932 if (ckWARN(WARN_DIGIT))
2933 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2934 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 2935 break;
2936 }
2937 }
9e24b6e2
JH		 2938 if (!overflowed) {
2939 register UV xuv = ruv << 4;
2940
2941 if ((xuv >> 4) != ruv) {
2942 dTHR;
2943 overflowed = TRUE;
2944 rnv = (NV) ruv;
627300f0
JH		 2945 if (ckWARN_d(WARN_OVERFLOW))
2946 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2947 "Integer overflow in hexadecimal number");
2948 } else
2949 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2950 }
2951 if (overflowed) {
2952 rnv *= 16.0;
2953 /* If an NV has not enough bits in its mantissa to
2954 * represent an UV this summing of small low-order numbers
2955 * is a waste of time (because the NV cannot preserve
2956 * the low-order bits anyway): we could just remember when
2957 * did we overflow and in the end just multiply rnv by the
2958 * right amount of 16-tuples. */
2959 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2960 }
6ff81951 2961 }
9e24b6e2
JH		 2962 if (!overflowed)
2963 rnv = (NV) ruv;
893fe2c2
JH		 2964 if ( ( overflowed && rnv > 4294967295.0)
2965#if UV_SIZEOF > 4
2966 || (!overflowed && ruv > 0xffffffff )
2967#endif
2968 ) {
252aa082 2969 dTHR;
627300f0
JH		 2970 if (ckWARN(WARN_PORTABLE))
2971 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 2972 "Hexadecimal number > 0xffffffff non-portable");
2973 }
fe14fcc3 2974 *retlen = s - start;
9e24b6e2 2975 return rnv;
fe14fcc3 2976}
760ac839 2977
491527d0 2978char*
864dbfa3 2979Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 2980{
2981 dTHR;
2982 char *xfound = Nullch;
2983 char *xfailed = Nullch;
0f31cffe 2984 char tmpbuf[MAXPATHLEN];
491527d0
GS		 2985 register char *s;
2986 I32 len;
2987 int retval;
2988#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2989# define SEARCH_EXTS ".bat", ".cmd", NULL
2990# define MAX_EXT_LEN 4
2991#endif
2992#ifdef OS2
2993# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2994# define MAX_EXT_LEN 4
2995#endif
2996#ifdef VMS
2997# define SEARCH_EXTS ".pl", ".com", NULL
2998# define MAX_EXT_LEN 4
2999#endif
3000 /* additional extensions to try in each dir if scriptname not found */
3001#ifdef SEARCH_EXTS
3002 char *exts[] = { SEARCH_EXTS };
3003 char **ext = search_ext ? search_ext : exts;
3004 int extidx = 0, i = 0;
3005 char *curext = Nullch;
3006#else
3007# define MAX_EXT_LEN 0
3008#endif
3009
3010 /*
3011 * If dosearch is true and if scriptname does not contain path
3012 * delimiters, search the PATH for scriptname.
3013 *
3014 * If SEARCH_EXTS is also defined, will look for each
3015 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3016 * while searching the PATH.
3017 *
3018 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3019 * proceeds as follows:
3020 * If DOSISH or VMSISH:
3021 * + look for ./scriptname{,.foo,.bar}
3022 * + search the PATH for scriptname{,.foo,.bar}
3023 *
3024 * If !DOSISH:
3025 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3026 * this will not look in '.' if it's not in the PATH)
3027 */
84486fc6 3028 tmpbuf[0] = '\0';
491527d0
GS		 3029
3030#ifdef VMS
3031# ifdef ALWAYS_DEFTYPES
3032 len = strlen(scriptname);
3033 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3034 int hasdir, idx = 0, deftypes = 1;
3035 bool seen_dot = 1;
3036
3037 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3038# else
3039 if (dosearch) {
3040 int hasdir, idx = 0, deftypes = 1;
3041 bool seen_dot = 1;
3042
3043 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3044# endif
3045 /* The first time through, just add SEARCH_EXTS to whatever we
3046 * already have, so we can check for default file types. */
3047 while (deftypes ||
84486fc6 3048 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3049 {
3050 if (deftypes) {
3051 deftypes = 0;
84486fc6 3052 *tmpbuf = '\0';
491527d0 3053 }
84486fc6
GS		 3054 if ((strlen(tmpbuf) + strlen(scriptname)
3055 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3056 continue; /* don't search dir with too-long name */
84486fc6 3057 strcat(tmpbuf, scriptname);
491527d0
GS		 3058#else /* !VMS */
3059
3060#ifdef DOSISH
3061 if (strEQ(scriptname, "-"))
3062 dosearch = 0;
3063 if (dosearch) { /* Look in '.' first. */
3064 char *cur = scriptname;
3065#ifdef SEARCH_EXTS
3066 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3067 while (ext[i])
3068 if (strEQ(ext[i++],curext)) {
3069 extidx = -1; /* already has an ext */
3070 break;
3071 }
3072 do {
3073#endif
3074 DEBUG_p(PerlIO_printf(Perl_debug_log,
3075 "Looking for %s\n",cur));
017f25f1
IZ		 3076 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3077 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3078 dosearch = 0;
3079 scriptname = cur;
3080#ifdef SEARCH_EXTS
3081 break;
3082#endif
3083 }
3084#ifdef SEARCH_EXTS
3085 if (cur == scriptname) {
3086 len = strlen(scriptname);
84486fc6 3087 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3088 break;
84486fc6 3089 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3090 }
3091 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3092 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3093#endif
3094 }
3095#endif
3096
3097 if (dosearch && !strchr(scriptname, '/')
3098#ifdef DOSISH
3099 && !strchr(scriptname, '\\')
3100#endif
3101 && (s = PerlEnv_getenv("PATH"))) {
3102 bool seen_dot = 0;
3103
3280af22
NIS		 3104 PL_bufend = s + strlen(s);
3105 while (s < PL_bufend) {
491527d0
GS		 3106#if defined(atarist) || defined(DOSISH)
3107 for (len = 0; *s
3108# ifdef atarist
3109 && *s != ','
3110# endif
3111 && *s != ';'; len++, s++) {
84486fc6
GS		 3112 if (len < sizeof tmpbuf)
3113 tmpbuf[len] = *s;
491527d0 3114 }
84486fc6
GS		 3115 if (len < sizeof tmpbuf)
3116 tmpbuf[len] = '\0';
491527d0 3117#else /* ! (atarist || DOSISH) */
3280af22 3118 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3119 ':',
3120 &len);
3121#endif /* ! (atarist || DOSISH) */
3280af22 3122 if (s < PL_bufend)
491527d0 3123 s++;
84486fc6 3124 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS		 3125 continue; /* don't search dir with too-long name */
3126 if (len
61ae2fbf 3127#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3128 && tmpbuf[len - 1] != '/'
3129 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3130#endif
3131 )
84486fc6
GS		 3132 tmpbuf[len++] = '/';
3133 if (len == 2 && tmpbuf[0] == '.')
491527d0 3134 seen_dot = 1;
84486fc6 3135 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3136#endif /* !VMS */
3137
3138#ifdef SEARCH_EXTS
84486fc6 3139 len = strlen(tmpbuf);
491527d0
GS		 3140 if (extidx > 0) /* reset after previous loop */
3141 extidx = 0;
3142 do {
3143#endif
84486fc6 3144 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3145 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3146 if (S_ISDIR(PL_statbuf.st_mode)) {
3147 retval = -1;
3148 }
491527d0
GS		 3149#ifdef SEARCH_EXTS
3150 } while ( retval < 0 /* not there */
3151 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3152 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3153 );
3154#endif
3155 if (retval < 0)
3156 continue;
3280af22
NIS		 3157 if (S_ISREG(PL_statbuf.st_mode)
3158 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3159#ifndef DOSISH
3280af22 3160 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3161#endif
3162 )
3163 {
84486fc6 3164 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3165 break;
3166 }
3167 if (!xfailed)
84486fc6 3168 xfailed = savepv(tmpbuf);
491527d0
GS		 3169 }
3170#ifndef DOSISH
017f25f1
IZ		 3171 if (!xfound && !seen_dot && !xfailed &&
3172 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3173 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3174#endif
3175 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3176 if (!xfound) {
3177 if (flags & 1) { /* do or die? */
cea2e8a9 3178 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3179 (xfailed ? "execute" : "find"),
3180 (xfailed ? xfailed : scriptname),
3181 (xfailed ? "" : " on PATH"),
3182 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3183 }
3184 scriptname = Nullch;
3185 }
491527d0
GS		 3186 if (xfailed)
3187 Safefree(xfailed);
3188 scriptname = xfound;
3189 }
9ccb31f9 3190 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3191}
3192
3193
11343788 3194#ifdef USE_THREADS
12ca11f6
MB		 3195#ifdef FAKE_THREADS
3196/* Very simplistic scheduler for now */
3197void
3198schedule(void)
3199{
c7848ba1 3200 thr = thr->i.next_run;
12ca11f6
MB		 3201}
3202
3203void
864dbfa3 3204Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3205{
3206 *cp = 0;
3207}
3208
3209void
864dbfa3 3210Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3211{
51dd5992 3212 perl_os_thread t;
12ca11f6
MB		 3213 perl_cond cond = *cp;
3214
3215 if (!cond)
3216 return;
3217 t = cond->thread;
3218 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3219 t->i.next_run = thr->i.next_run;
3220 thr->i.next_run->i.prev_run = t;
3221 t->i.prev_run = thr;
3222 thr->i.next_run = t;
3223 thr->i.wait_queue = 0;
12ca11f6
MB		 3224 /* Remove from the wait queue */
3225 *cp = cond->next;
3226 Safefree(cond);
3227}
3228
3229void
864dbfa3 3230Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3231{
51dd5992 3232 perl_os_thread t;
12ca11f6
MB		 3233 perl_cond cond, cond_next;
3234
3235 for (cond = *cp; cond; cond = cond_next) {
3236 t = cond->thread;
3237 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3238 t->i.next_run = thr->i.next_run;
3239 thr->i.next_run->i.prev_run = t;
3240 t->i.prev_run = thr;
3241 thr->i.next_run = t;
3242 thr->i.wait_queue = 0;
12ca11f6
MB		 3243 /* Remove from the wait queue */
3244 cond_next = cond->next;
3245 Safefree(cond);
3246 }
3247 *cp = 0;
3248}
3249
3250void
864dbfa3 3251Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3252{
3253 perl_cond cond;
3254
c7848ba1 3255 if (thr->i.next_run == thr)
cea2e8a9 3256 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3257
0f15f207 3258 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3259 cond->thread = thr;
3260 cond->next = *cp;
3261 *cp = cond;
c7848ba1 3262 thr->i.wait_queue = cond;
12ca11f6 3263 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3264 thr->i.next_run->i.prev_run = thr->i.prev_run;
3265 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3266}
3267#endif /* FAKE_THREADS */
3268
0d85d877 3269#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3270struct perl_thread *
864dbfa3 3271Perl_getTHR(pTHX)
11343788
MB		 3272{
3273 pthread_addr_t t;
3274
6b88bc9c 3275 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3276 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3277 return (struct perl_thread *) t;
11343788 3278}
0d85d877 3279#endif
f93b4edd
MB		 3280
3281MAGIC *
864dbfa3 3282Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3283{
3284 MAGIC *mg;
3285
3286 SvUPGRADE(sv, SVt_PVMG);
3287 mg = mg_find(sv, 'm');
3288 if (!mg) {
3289 condpair_t *cp;
3290
3291 New(53, cp, 1, condpair_t);
3292 MUTEX_INIT(&cp->mutex);
3293 COND_INIT(&cp->owner_cond);
3294 COND_INIT(&cp->cond);
3295 cp->owner = 0;
28a8573f 3296 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3297 mg = mg_find(sv, 'm');
3298 if (mg) {
3299 /* someone else beat us to initialising it */
28a8573f 3300 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3301 MUTEX_DESTROY(&cp->mutex);
3302 COND_DESTROY(&cp->owner_cond);
3303 COND_DESTROY(&cp->cond);
3304 Safefree(cp);
3305 }
3306 else {
3307 sv_magic(sv, Nullsv, 'm', 0, 0);
3308 mg = SvMAGIC(sv);
3309 mg->mg_ptr = (char *)cp;
565764a8 3310 mg->mg_len = sizeof(cp);
28a8573f 3311 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3312 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3313 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3314 }
3315 }
3316 return mg;
3317}
a863c7d1
MB		 3318
3319/*
199100c8
MB		 3320 * Make a new perl thread structure using t as a prototype. Some of the
3321 * fields for the new thread are copied from the prototype thread, t,
3322 * so t should not be running in perl at the time this function is
3323 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3324 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3325 */
52e1cb5e 3326struct perl_thread *
864dbfa3 3327Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3328{
c5be433b 3329#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3330 struct perl_thread *thr;
cea2e8a9 3331#endif
a863c7d1 3332 SV *sv;
199100c8
MB		 3333 SV **svp;
3334 I32 i;
3335
79cb57f6 3336 sv = newSVpvn("", 0);
52e1cb5e
JH		 3337 SvGROW(sv, sizeof(struct perl_thread) + 1);
3338 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3339 thr = (Thread) SvPVX(sv);
949ced2d 3340#ifdef DEBUGGING
52e1cb5e 3341 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3342 PL_markstack = 0;
3343 PL_scopestack = 0;
3344 PL_savestack = 0;
3345 PL_retstack = 0;
3346 PL_dirty = 0;
3347 PL_localizing = 0;
949ced2d
GS		 3348 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3349#else
3350 Zero(thr, 1, struct perl_thread);
3351#endif
199100c8 3352
0b94c7bb 3353 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3354
199100c8 3355 thr->oursv = sv;
cea2e8a9 3356 init_stacks();
a863c7d1 3357
533c011a 3358 PL_curcop = &PL_compiling;
c5be433b 3359 thr->interp = t->interp;
199100c8 3360 thr->cvcache = newHV();
54b9620d 3361 thr->threadsv = newAV();
a863c7d1 3362 thr->specific = newAV();
79cb57f6 3363 thr->errsv = newSVpvn("", 0);
38a03e6e 3364 thr->errhv = newHV();
a863c7d1
MB		 3365 thr->flags = THRf_R_JOINABLE;
3366 MUTEX_INIT(&thr->mutex);
199100c8 3367
d55594ae
GS		 3368 /* top_env needs to be non-zero. It points to an area
3369 in which longjmp() stuff is stored, as C callstack
3370 info there at least is thread specific this has to
3371 be per-thread. Otherwise a 'die' in a thread gives
3372 that thread the C stack of last thread to do an eval {}!
3373 See comments in scope.h
3374 Initialize top entry (as in perl.c for main thread)
3375 */
533c011a
NIS		 3376 PL_start_env.je_prev = NULL;
3377 PL_start_env.je_ret = -1;
3378 PL_start_env.je_mustcatch = TRUE;
3379 PL_top_env = &PL_start_env;
3380
faef0170 3381 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3382 PL_restartop = 0;
3383
b099ddc0
GS		 3384 PL_statname = NEWSV(66,0);
3385 PL_maxscream = -1;
0b94c7bb
GS		 3386 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3387 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3388 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3389 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3390 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3391 PL_regindent = 0;
3392 PL_reginterp_cnt = 0;
3393 PL_lastscream = Nullsv;
3394 PL_screamfirst = 0;
3395 PL_screamnext = 0;
3396 PL_reg_start_tmp = 0;
3397 PL_reg_start_tmpl = 0;
14ed4b74 3398 PL_reg_poscache = Nullch;
b099ddc0
GS		 3399
3400 /* parent thread's data needs to be locked while we make copy */
3401 MUTEX_LOCK(&t->mutex);
3402
312caa8e
CS		 3403 PL_protect = t->Tprotect;
3404
b099ddc0
GS		 3405 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3406 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3407 PL_curstash = t->Tcurstash; /* always be set to main? */
3408
6b88bc9c 3409 PL_tainted = t->Ttainted;
84fee439
NIS		 3410 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3411 PL_nrs = newSVsv(t->Tnrs);
3412 PL_rs = SvREFCNT_inc(PL_nrs);
3413 PL_last_in_gv = Nullgv;
3414 PL_ofslen = t->Tofslen;
3415 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3416 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3417 PL_chopset = t->Tchopset;
3418 PL_formtarget = newSVsv(t->Tformtarget);
3419 PL_bodytarget = newSVsv(t->Tbodytarget);
3420 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3421
54b9620d
MB		 3422 /* Initialise all per-thread SVs that the template thread used */
3423 svp = AvARRAY(t->threadsv);
93965878 3424 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3425 if (*svp && *svp != &PL_sv_undef) {
199100c8 3426 SV *sv = newSVsv(*svp);
54b9620d 3427 av_store(thr->threadsv, i, sv);
533c011a 3428 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3429 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3430 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3431 }
3432 }
940cb80d 3433 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3434
533c011a
NIS		 3435 MUTEX_LOCK(&PL_threads_mutex);
3436 PL_nthreads++;
3437 thr->tid = ++PL_threadnum;
199100c8
MB		 3438 thr->next = t->next;
3439 thr->prev = t;
3440 t->next = thr;
3441 thr->next->prev = thr;
533c011a 3442 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3443
b099ddc0
GS		 3444 /* done copying parent's state */
3445 MUTEX_UNLOCK(&t->mutex);
3446
a863c7d1 3447#ifdef HAVE_THREAD_INTERN
4f63d024 3448 Perl_init_thread_intern(thr);
a863c7d1 3449#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3450 return thr;
3451}
11343788 3452#endif /* USE_THREADS */
760ac839
LW		 3453
3454#ifdef HUGE_VAL
3455/*
3456 * This hack is to force load of "huge" support from libm.a
3457 * So it is in perl for (say) POSIX to use.
3458 * Needed for SunOS with Sun's 'acc' for example.
3459 */
65202027 3460NV
8ac85365 3461Perl_huge(void)
760ac839
LW		 3462{
3463 return HUGE_VAL;
3464}
3465#endif
4e35701f 3466
22239a37
NIS		 3467#ifdef PERL_GLOBAL_STRUCT
3468struct perl_vars *
864dbfa3 3469Perl_GetVars(pTHX)
22239a37 3470{
533c011a 3471 return &PL_Vars;
22239a37 3472}
31fb1209
NIS		 3473#endif
3474
3475char **
864dbfa3 3476Perl_get_op_names(pTHX)
31fb1209 3477{
22c35a8c 3478 return PL_op_name;
31fb1209
NIS		 3479}
3480
3481char **
864dbfa3 3482Perl_get_op_descs(pTHX)
31fb1209 3483{
22c35a8c 3484 return PL_op_desc;
31fb1209 3485}
9e6b2b00
GS		 3486
3487char *
864dbfa3 3488Perl_get_no_modify(pTHX)
9e6b2b00 3489{
22c35a8c 3490 return (char*)PL_no_modify;
9e6b2b00
GS		 3491}
3492
3493U32 *
864dbfa3 3494Perl_get_opargs(pTHX)
9e6b2b00 3495{
22c35a8c 3496 return PL_opargs;
9e6b2b00 3497}
51aa15f3 3498
0cb96387
GS		 3499PPADDR_t*
3500Perl_get_ppaddr(pTHX)
3501{
3502 return &PL_ppaddr;
3503}
3504
a6c40364
GS		 3505#ifndef HAS_GETENV_LEN
3506char *
864dbfa3 3507Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3508{
3509 char *env_trans = PerlEnv_getenv(env_elem);
3510 if (env_trans)
3511 *len = strlen(env_trans);
3512 return env_trans;
f675dbe5
CB		 3513}
3514#endif
3515
dc9e4912
GS		 3516
3517MGVTBL*
864dbfa3 3518Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3519{
3520 MGVTBL* result = Null(MGVTBL*);
3521
3522 switch(vtbl_id) {
3523 case want_vtbl_sv:
3524 result = &PL_vtbl_sv;
3525 break;
3526 case want_vtbl_env:
3527 result = &PL_vtbl_env;
3528 break;
3529 case want_vtbl_envelem:
3530 result = &PL_vtbl_envelem;
3531 break;
3532 case want_vtbl_sig:
3533 result = &PL_vtbl_sig;
3534 break;
3535 case want_vtbl_sigelem:
3536 result = &PL_vtbl_sigelem;
3537 break;
3538 case want_vtbl_pack:
3539 result = &PL_vtbl_pack;
3540 break;
3541 case want_vtbl_packelem:
3542 result = &PL_vtbl_packelem;
3543 break;
3544 case want_vtbl_dbline:
3545 result = &PL_vtbl_dbline;
3546 break;
3547 case want_vtbl_isa:
3548 result = &PL_vtbl_isa;
3549 break;
3550 case want_vtbl_isaelem:
3551 result = &PL_vtbl_isaelem;
3552 break;
3553 case want_vtbl_arylen:
3554 result = &PL_vtbl_arylen;
3555 break;
3556 case want_vtbl_glob:
3557 result = &PL_vtbl_glob;
3558 break;
3559 case want_vtbl_mglob:
3560 result = &PL_vtbl_mglob;
3561 break;
3562 case want_vtbl_nkeys:
3563 result = &PL_vtbl_nkeys;
3564 break;
3565 case want_vtbl_taint:
3566 result = &PL_vtbl_taint;
3567 break;
3568 case want_vtbl_substr:
3569 result = &PL_vtbl_substr;
3570 break;
3571 case want_vtbl_vec:
3572 result = &PL_vtbl_vec;
3573 break;
3574 case want_vtbl_pos:
3575 result = &PL_vtbl_pos;
3576 break;
3577 case want_vtbl_bm:
3578 result = &PL_vtbl_bm;
3579 break;
3580 case want_vtbl_fm:
3581 result = &PL_vtbl_fm;
3582 break;
3583 case want_vtbl_uvar:
3584 result = &PL_vtbl_uvar;
3585 break;
3586#ifdef USE_THREADS
3587 case want_vtbl_mutex:
3588 result = &PL_vtbl_mutex;
3589 break;
3590#endif
3591 case want_vtbl_defelem:
3592 result = &PL_vtbl_defelem;
3593 break;
3594 case want_vtbl_regexp:
3595 result = &PL_vtbl_regexp;
3596 break;
3597 case want_vtbl_regdata:
3598 result = &PL_vtbl_regdata;
3599 break;
3600 case want_vtbl_regdatum:
3601 result = &PL_vtbl_regdatum;
3602 break;
3c90161d 3603#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3604 case want_vtbl_collxfrm:
3605 result = &PL_vtbl_collxfrm;
3606 break;
3c90161d 3607#endif
dc9e4912
GS		 3608 case want_vtbl_amagic:
3609 result = &PL_vtbl_amagic;
3610 break;
3611 case want_vtbl_amagicelem:
3612 result = &PL_vtbl_amagicelem;
3613 break;
810b8aa5
GS		 3614 case want_vtbl_backref:
3615 result = &PL_vtbl_backref;
3616 break;
dc9e4912
GS		 3617 }
3618 return result;
3619}
3620
767df6a1 3621I32
864dbfa3 3622Perl_my_fflush_all(pTHX)
767df6a1
JH		 3623{
3624#ifdef FFLUSH_NULL
ce720889 3625 return PerlIO_flush(NULL);
767df6a1
JH		 3626#else
3627 long open_max = -1;
ed39a0f2 3628# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3629# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3630 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3631# else
767df6a1
JH		 3632# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3633 open_max = sysconf(_SC_OPEN_MAX);
3634# else
3635# ifdef FOPEN_MAX
d2201af2 3636 open_max = FOPEN_MAX;
767df6a1
JH		 3637# else
3638# ifdef OPEN_MAX
d2201af2 3639 open_max = OPEN_MAX;
767df6a1
JH		 3640# else
3641# ifdef _NFILE
d2201af2 3642 open_max = _NFILE;
767df6a1
JH		 3643# endif
3644# endif
3645# endif
3646# endif
d2201af2 3647# endif
767df6a1
JH		 3648 if (open_max > 0) {
3649 long i;
3650 for (i = 0; i < open_max; i++)
d2201af2
AD		 3651 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3652 STDIO_STREAM_ARRAY[i]._file < open_max &&
3653 STDIO_STREAM_ARRAY[i]._flag)
3654 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3655 return 0;
3656 }
3657# endif
3658 SETERRNO(EBADF,RMS$_IFI);
3659 return EOF;
3660#endif
3661}
097ee67d 3662
65202027 3663NV
5b877257 3664Perl_my_atof(pTHX_ const char* s) {
097ee67d 3665#ifdef USE_LOCALE_NUMERIC
d43ce814 3666 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3667 NV x, y;
097ee67d 3668
65202027 3669 x = Perl_atof(s);
097ee67d 3670 SET_NUMERIC_STANDARD();
65202027 3671 y = Perl_atof(s);
097ee67d
JH		 3672 SET_NUMERIC_LOCAL();
3673 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3674 return y;
3675 return x;
65202027
DS		 3676 }
3677 else
3678 return Perl_atof(s);
097ee67d 3679#else
65202027 3680 return Perl_atof(s);
097ee67d
JH		 3681#endif
3682}
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