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[perl5.git] / util.c
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a0d0e21e 1/* util.c
a687059c 2 *
3818b22b 3 * Copyright (c) 1991-2000, 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
ff68c719 43#ifdef I_SYS_WAIT
44# include <sys/wait.h>
45#endif
46
097ee67d
JH		 47#ifdef I_LOCALE
48# include <locale.h>
49#endif
50
8d063cd8 51#define FLUSH
8d063cd8 52
a0d0e21e 53#ifdef LEAKTEST
a0d0e21e 54
8c52afec
IZ		 55long xcount[MAXXCOUNT];
56long lastxcount[MAXXCOUNT];
57long xycount[MAXXCOUNT][MAXYCOUNT];
58long lastxycount[MAXXCOUNT][MAXYCOUNT];
59
a0d0e21e 60#endif
a863c7d1 61
16cebae2
GS		 62#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
63# define FD_CLOEXEC 1 /* NeXT needs this */
64#endif
65
f2517201 66/* paranoid version of system's malloc() */
8d063cd8 67
a687059c
LW		 68/* NOTE: Do not call the next three routines directly. Use the macros
69 * in handy.h, so that we can easily redefine everything to do tracking of
70 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 71 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 72 */
73
bd4080b3 74Malloc_t
4f63d024 75Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 76{
54aff467 77 dTHX;
bd4080b3 78 Malloc_t ptr;
55497cff 79#ifdef HAS_64K_LIMIT
62b28dd9 80 if (size > 0xffff) {
bf49b057 81 PerlIO_printf(Perl_error_log,
16cebae2 82 "Allocation too large: %lx\n", size) FLUSH;
54aff467 83 my_exit(1);
62b28dd9 84 }
55497cff 85#endif /* HAS_64K_LIMIT */
34de22dd
LW		 86#ifdef DEBUGGING
87 if ((long)size < 0)
4f63d024 88 Perl_croak_nocontext("panic: malloc");
34de22dd 89#endif
6ad3d225 90 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 91 PERL_ALLOC_CHECK(ptr);
97835f67 92 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 93 if (ptr != Nullch)
94 return ptr;
3280af22 95 else if (PL_nomemok)
7c0587c8 96 return Nullch;
8d063cd8 97 else {
bf49b057 98 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 99 my_exit(1);
4e35701f 100 return Nullch;
8d063cd8
LW		 101 }
102 /*NOTREACHED*/
103}
104
f2517201 105/* paranoid version of system's realloc() */
8d063cd8 106
bd4080b3 107Malloc_t
4f63d024 108Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 109{
54aff467 110 dTHX;
bd4080b3 111 Malloc_t ptr;
9a34ef1d 112#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 113 Malloc_t PerlMem_realloc();
ecfc5424 114#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 115
55497cff 116#ifdef HAS_64K_LIMIT
5f05dabc 117 if (size > 0xffff) {
bf49b057 118 PerlIO_printf(Perl_error_log,
5f05dabc 119 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 120 my_exit(1);
5f05dabc 121 }
55497cff 122#endif /* HAS_64K_LIMIT */
7614df0c 123 if (!size) {
f2517201 124 safesysfree(where);
7614df0c
JD		 125 return NULL;
126 }
127
378cc40b 128 if (!where)
f2517201 129 return safesysmalloc(size);
34de22dd
LW		 130#ifdef DEBUGGING
131 if ((long)size < 0)
4f63d024 132 Perl_croak_nocontext("panic: realloc");
34de22dd 133#endif
7614df0c 134 ptr = PerlMem_realloc(where,size);
da927450 135 PERL_ALLOC_CHECK(ptr);
cd39f2b6 136
97835f67
JH		 137 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
138 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 139
8d063cd8
LW		 140 if (ptr != Nullch)
141 return ptr;
3280af22 142 else if (PL_nomemok)
7c0587c8 143 return Nullch;
8d063cd8 144 else {
bf49b057 145 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 146 my_exit(1);
4e35701f 147 return Nullch;
8d063cd8
LW		 148 }
149 /*NOTREACHED*/
150}
151
f2517201 152/* safe version of system's free() */
8d063cd8 153
54310121 154Free_t
4f63d024 155Perl_safesysfree(Malloc_t where)
8d063cd8 156{
155aba94 157#ifdef PERL_IMPLICIT_SYS
54aff467 158 dTHX;
155aba94 159#endif
97835f67 160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 161 if (where) {
de3bb511 162 /*SUPPRESS 701*/
6ad3d225 163 PerlMem_free(where);
378cc40b 164 }
8d063cd8
LW		 165}
166
f2517201 167/* safe version of system's calloc() */
1050c9ca 168
bd4080b3 169Malloc_t
4f63d024 170Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 171{
54aff467 172 dTHX;
bd4080b3 173 Malloc_t ptr;
1050c9ca 174
55497cff 175#ifdef HAS_64K_LIMIT
5f05dabc 176 if (size * count > 0xffff) {
bf49b057 177 PerlIO_printf(Perl_error_log,
5f05dabc 178 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 179 my_exit(1);
5f05dabc 180 }
55497cff 181#endif /* HAS_64K_LIMIT */
1050c9ca 182#ifdef DEBUGGING
183 if ((long)size < 0 || (long)count < 0)
4f63d024 184 Perl_croak_nocontext("panic: calloc");
1050c9ca 185#endif
0b7c1c42 186 size *= count;
6ad3d225 187 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 188 PERL_ALLOC_CHECK(ptr);
97835f67 189 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca 190 if (ptr != Nullch) {
191 memset((void*)ptr, 0, size);
192 return ptr;
193 }
3280af22 194 else if (PL_nomemok)
1050c9ca 195 return Nullch;
196 else {
bf49b057 197 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 198 my_exit(1);
4e35701f 199 return Nullch;
1050c9ca 200 }
201 /*NOTREACHED*/
202}
203
a687059c
LW		 204#ifdef LEAKTEST
205
8c52afec
IZ		 206struct mem_test_strut {
207 union {
208 long type;
209 char c[2];
210 } u;
211 long size;
212};
213
214# define ALIGN sizeof(struct mem_test_strut)
215
216# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
217# define typeof_chunk(ch) \
218 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
219# define set_typeof_chunk(ch,t) \
220 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
221#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
222 ? MAXYCOUNT - 1 \
223 : ( (size) > 40 \
224 ? ((size) - 1)/8 + 5 \
225 : ((size) - 1)/4))
8d063cd8 226
bd4080b3 227Malloc_t
4f63d024 228Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 229{
8c52afec 230 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 231
8c52afec
IZ		 232 xcount[x] += size;
233 xycount[x][SIZE_TO_Y(size)]++;
234 set_typeof_chunk(where, x);
235 sizeof_chunk(where) = size;
236 return (Malloc_t)(where + ALIGN);
8d063cd8 237}
8d063cd8 238
bd4080b3 239Malloc_t
4f63d024 240Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 241{
8c52afec
IZ		 242 char *where = (char*)wh;
243
244 if (!wh)
245 return safexmalloc(0,size);
246
247 {
248 MEM_SIZE old = sizeof_chunk(where - ALIGN);
249 int t = typeof_chunk(where - ALIGN);
250 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
251
252 xycount[t][SIZE_TO_Y(old)]--;
253 xycount[t][SIZE_TO_Y(size)]++;
254 xcount[t] += size - old;
255 sizeof_chunk(new) = size;
256 return (Malloc_t)(new + ALIGN);
257 }
a687059c
LW		 258}
259
260void
4f63d024 261Perl_safexfree(Malloc_t wh)
a687059c 262{
79072805 263 I32 x;
8c52afec
IZ		 264 char *where = (char*)wh;
265 MEM_SIZE size;
266
a687059c
LW		 267 if (!where)
268 return;
269 where -= ALIGN;
8c52afec 270 size = sizeof_chunk(where);
a687059c 271 x = where[0] + 100 * where[1];
8c52afec
IZ		 272 xcount[x] -= size;
273 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 274 safefree(where);
275}
276
bd4080b3 277Malloc_t
4f63d024 278Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 279{
8c52afec
IZ		 280 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
281 xcount[x] += size;
282 xycount[x][SIZE_TO_Y(size)]++;
283 memset((void*)(where + ALIGN), 0, size * count);
284 set_typeof_chunk(where, x);
285 sizeof_chunk(where) = size;
286 return (Malloc_t)(where + ALIGN);
1050c9ca 287}
288
864dbfa3 289STATIC void
cea2e8a9 290S_xstat(pTHX_ int flag)
8d063cd8 291{
8c52afec
IZ		 292 register I32 i, j, total = 0;
293 I32 subtot[MAXYCOUNT];
8d063cd8 294
8c52afec
IZ		 295 for (j = 0; j < MAXYCOUNT; j++) {
296 subtot[j] = 0;
297 }
298
bf49b057 299 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 300 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 301 total += xcount[i];
302 for (j = 0; j < MAXYCOUNT; j++) {
303 subtot[j] += xycount[i][j];
304 }
305 if (flag == 0
306 ? xcount[i] /* Have something */
307 : (flag == 2
308 ? xcount[i] != lastxcount[i] /* Changed */
309 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 310 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 311 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 312 lastxcount[i] = xcount[i];
8c52afec
IZ		 313 for (j = 0; j < MAXYCOUNT; j++) {
314 if ( flag == 0
315 ? xycount[i][j] /* Have something */
316 : (flag == 2
317 ? xycount[i][j] != lastxycount[i][j] /* Changed */
318 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 319 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ		 320 flag == 2
321 ? xycount[i][j] - lastxycount[i][j]
322 : xycount[i][j]);
323 lastxycount[i][j] = xycount[i][j];
324 } else {
bf49b057 325 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 326 }
327 }
bf49b057 328 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 329 }
330 }
331 if (flag != 2) {
bf49b057 332 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 333 for (j = 0; j < MAXYCOUNT; j++) {
334 if (subtot[j]) {
bf49b057 335 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 336 } else {
bf49b057 337 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 338 }
8d063cd8 339 }
bf49b057 340 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 341 }
8d063cd8 342}
a687059c
LW		 343
344#endif /* LEAKTEST */
8d063cd8
LW		 345
346/* copy a string up to some (non-backslashed) delimiter, if any */
347
348char *
864dbfa3 349Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 350{
fc36a67e 351 register I32 tolen;
352 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 353 if (*from == '\\') {
354 if (from[1] == delim)
355 from++;
fc36a67e 356 else {
357 if (to < toend)
358 *to++ = *from;
359 tolen++;
360 from++;
361 }
378cc40b 362 }
bedebaa5 363 else if (*from == delim)
8d063cd8 364 break;
fc36a67e 365 if (to < toend)
366 *to++ = *from;
8d063cd8 367 }
bedebaa5
CS		 368 if (to < toend)
369 *to = '\0';
fc36a67e 370 *retlen = tolen;
8d063cd8
LW		 371 return from;
372}
373
374/* return ptr to little string in big string, NULL if not found */
378cc40b 375/* This routine was donated by Corey Satten. */
8d063cd8
LW		 376
377char *
864dbfa3 378Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 379{
08105a92 380 register const char *s, *x;
79072805 381 register I32 first;
378cc40b 382
a687059c 383 if (!little)
08105a92 384 return (char*)big;
a687059c 385 first = *little++;
378cc40b 386 if (!first)
08105a92 387 return (char*)big;
378cc40b
LW		 388 while (*big) {
389 if (*big++ != first)
390 continue;
391 for (x=big,s=little; *s; /**/ ) {
392 if (!*x)
393 return Nullch;
394 if (*s++ != *x++) {
395 s--;
396 break;
397 }
398 }
399 if (!*s)
08105a92 400 return (char*)(big-1);
378cc40b
LW		 401 }
402 return Nullch;
403}
8d063cd8 404
a687059c
LW		 405/* same as instr but allow embedded nulls */
406
407char *
864dbfa3 408Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 409{
08105a92 410 register const char *s, *x;
79072805 411 register I32 first = *little;
08105a92 412 register const char *littleend = lend;
378cc40b 413
a0d0e21e 414 if (!first && little >= littleend)
08105a92 415 return (char*)big;
de3bb511
LW		 416 if (bigend - big < littleend - little)
417 return Nullch;
a687059c
LW		 418 bigend -= littleend - little++;
419 while (big <= bigend) {
420 if (*big++ != first)
421 continue;
422 for (x=big,s=little; s < littleend; /**/ ) {
423 if (*s++ != *x++) {
424 s--;
425 break;
426 }
427 }
428 if (s >= littleend)
08105a92 429 return (char*)(big-1);
378cc40b 430 }
a687059c
LW		 431 return Nullch;
432}
433
434/* reverse of the above--find last substring */
435
436char *
864dbfa3 437Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 438{
08105a92
GS		 439 register const char *bigbeg;
440 register const char *s, *x;
79072805 441 register I32 first = *little;
08105a92 442 register const char *littleend = lend;
a687059c 443
a0d0e21e 444 if (!first && little >= littleend)
08105a92 445 return (char*)bigend;
a687059c
LW		 446 bigbeg = big;
447 big = bigend - (littleend - little++);
448 while (big >= bigbeg) {
449 if (*big-- != first)
450 continue;
451 for (x=big+2,s=little; s < littleend; /**/ ) {
452 if (*s++ != *x++) {
453 s--;
454 break;
455 }
456 }
457 if (s >= littleend)
08105a92 458 return (char*)(big+1);
378cc40b 459 }
a687059c 460 return Nullch;
378cc40b 461}
a687059c 462
bbce6d69 463/*
464 * Set up for a new ctype locale.
465 */
55497cff 466void
864dbfa3 467Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 468{
36477c24 469#ifdef USE_LOCALE_CTYPE
470
bbce6d69 471 int i;
ef7eada9 472
bbce6d69 473 for (i = 0; i < 256; i++) {
474 if (isUPPER_LC(i))
22c35a8c 475 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 476 else if (isLOWER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 478 else
22c35a8c 479 PL_fold_locale[i] = i;
bbce6d69 480 }
bbce6d69 481
36477c24 482#endif /* USE_LOCALE_CTYPE */
483}
bbce6d69 484
485/*
486 * Set up for a new collation locale.
487 */
488void
864dbfa3 489Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 490{
36477c24 491#ifdef USE_LOCALE_COLLATE
492
bbce6d69 493 if (! newcoll) {
3280af22
NIS		 494 if (PL_collation_name) {
495 ++PL_collation_ix;
496 Safefree(PL_collation_name);
497 PL_collation_name = NULL;
498 PL_collation_standard = TRUE;
499 PL_collxfrm_base = 0;
500 PL_collxfrm_mult = 2;
bbce6d69 501 }
502 return;
503 }
504
3280af22
NIS		 505 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
506 ++PL_collation_ix;
507 Safefree(PL_collation_name);
508 PL_collation_name = savepv(newcoll);
509 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 510
bbce6d69 511 {
512 /* 2: at most so many chars ('a', 'b'). */
513 /* 50: surely no system expands a char more. */
514#define XFRMBUFSIZE (2 * 50)
515 char xbuf[XFRMBUFSIZE];
516 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
517 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
518 SSize_t mult = fb - fa;
519 if (mult < 1)
cea2e8a9 520 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 521 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
522 PL_collxfrm_mult = mult;
bbce6d69 523 }
bbce6d69 524 }
bbce6d69 525
36477c24 526#endif /* USE_LOCALE_COLLATE */
527}
bbce6d69 528
097ee67d 529void
51371543 530Perl_set_numeric_radix(pTHX)
097ee67d
JH		 531{
532#ifdef USE_LOCALE_NUMERIC
533# ifdef HAS_LOCALECONV
534 struct lconv* lc;
535
536 lc = localeconv();
537 if (lc && lc->decimal_point)
538 /* We assume that decimal separator aka the radix
539 * character is always a single character. If it
540 * ever is a string, this needs to be rethunk. */
541 PL_numeric_radix = *lc->decimal_point;
542 else
543 PL_numeric_radix = 0;
544# endif /* HAS_LOCALECONV */
097ee67d
JH		 545#endif /* USE_LOCALE_NUMERIC */
546}
547
bbce6d69 548/*
549 * Set up for a new numeric locale.
550 */
551void
864dbfa3 552Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 553{
36477c24 554#ifdef USE_LOCALE_NUMERIC
555
bbce6d69 556 if (! newnum) {
3280af22
NIS		 557 if (PL_numeric_name) {
558 Safefree(PL_numeric_name);
559 PL_numeric_name = NULL;
560 PL_numeric_standard = TRUE;
561 PL_numeric_local = TRUE;
bbce6d69 562 }
563 return;
564 }
565
3280af22
NIS		 566 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
567 Safefree(PL_numeric_name);
568 PL_numeric_name = savepv(newnum);
569 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
570 PL_numeric_local = TRUE;
51371543 571 set_numeric_radix();
bbce6d69 572 }
36477c24 573
574#endif /* USE_LOCALE_NUMERIC */
bbce6d69 575}
576
577void
864dbfa3 578Perl_set_numeric_standard(pTHX)
bbce6d69 579{
5f05dabc 580#ifdef USE_LOCALE_NUMERIC
581
3280af22 582 if (! PL_numeric_standard) {
bbce6d69 583 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 584 PL_numeric_standard = TRUE;
585 PL_numeric_local = FALSE;
bbce6d69 586 }
5f05dabc 587
588#endif /* USE_LOCALE_NUMERIC */
bbce6d69 589}
590
591void
864dbfa3 592Perl_set_numeric_local(pTHX)
bbce6d69 593{
5f05dabc 594#ifdef USE_LOCALE_NUMERIC
595
3280af22
NIS		 596 if (! PL_numeric_local) {
597 setlocale(LC_NUMERIC, PL_numeric_name);
598 PL_numeric_standard = FALSE;
599 PL_numeric_local = TRUE;
51371543 600 set_numeric_radix();
bbce6d69 601 }
bbce6d69 602
36477c24 603#endif /* USE_LOCALE_NUMERIC */
5f05dabc 604}
36477c24 605
36477c24 606/*
607 * Initialize locale awareness.
608 */
f0c5b223 609int
864dbfa3 610Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 611{
612 int ok = 1;
613 /* returns
614 * 1 = set ok or not applicable,
615 * 0 = fallback to C locale,
616 * -1 = fallback to C locale failed
617 */
bbce6d69 618
36477c24 619#ifdef USE_LOCALE
bbce6d69 620
36477c24 621#ifdef USE_LOCALE_CTYPE
bbce6d69 622 char *curctype = NULL;
36477c24 623#endif /* USE_LOCALE_CTYPE */
624#ifdef USE_LOCALE_COLLATE
bbce6d69 625 char *curcoll = NULL;
36477c24 626#endif /* USE_LOCALE_COLLATE */
627#ifdef USE_LOCALE_NUMERIC
bbce6d69 628 char *curnum = NULL;
36477c24 629#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 630#ifdef __GLIBC__
631 char *language = PerlEnv_getenv("LANGUAGE");
632#endif
76e3520e
GS		 633 char *lc_all = PerlEnv_getenv("LC_ALL");
634 char *lang = PerlEnv_getenv("LANG");
bbce6d69 635 bool setlocale_failure = FALSE;
f0c5b223 636
02b32252
CS		 637#ifdef LOCALE_ENVIRON_REQUIRED
638
639 /*
640 * Ultrix setlocale(..., "") fails if there are no environment
641 * variables from which to get a locale name.
642 */
643
644 bool done = FALSE;
645
646#ifdef LC_ALL
647 if (lang) {
648 if (setlocale(LC_ALL, ""))
649 done = TRUE;
650 else
651 setlocale_failure = TRUE;
652 }
0644c9cb 653 if (!setlocale_failure) {
02b32252 654#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 655 if (! (curctype =
656 setlocale(LC_CTYPE,
657 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 658 ? "" : Nullch)))
659 setlocale_failure = TRUE;
660#endif /* USE_LOCALE_CTYPE */
661#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 662 if (! (curcoll =
663 setlocale(LC_COLLATE,
664 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 665 ? "" : Nullch)))
666 setlocale_failure = TRUE;
667#endif /* USE_LOCALE_COLLATE */
668#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 669 if (! (curnum =
670 setlocale(LC_NUMERIC,
671 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 672 ? "" : Nullch)))
673 setlocale_failure = TRUE;
674#endif /* USE_LOCALE_NUMERIC */
675 }
676
0644c9cb 677#endif /* LC_ALL */
02b32252 678
0644c9cb 679#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 680
0644c9cb 681#ifdef LC_ALL
bbce6d69 682 if (! setlocale(LC_ALL, ""))
683 setlocale_failure = TRUE;
0644c9cb 684#endif /* LC_ALL */
bbce6d69 685
0644c9cb 686 if (!setlocale_failure) {
36477c24 687#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 688 if (! (curctype = setlocale(LC_CTYPE, "")))
689 setlocale_failure = TRUE;
36477c24 690#endif /* USE_LOCALE_CTYPE */
691#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 692 if (! (curcoll = setlocale(LC_COLLATE, "")))
693 setlocale_failure = TRUE;
36477c24 694#endif /* USE_LOCALE_COLLATE */
695#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 696 if (! (curnum = setlocale(LC_NUMERIC, "")))
697 setlocale_failure = TRUE;
36477c24 698#endif /* USE_LOCALE_NUMERIC */
0644c9cb 699 }
02b32252 700
5f05dabc 701 if (setlocale_failure) {
702 char *p;
703 bool locwarn = (printwarn > 1 ||
155aba94
GS		 704 (printwarn &&
705 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 706
5f05dabc 707 if (locwarn) {
708#ifdef LC_ALL
709
bf49b057 710 PerlIO_printf(Perl_error_log,
5f05dabc 711 "perl: warning: Setting locale failed.\n");
712
713#else /* !LC_ALL */
714
bf49b057 715 PerlIO_printf(Perl_error_log,
bbce6d69 716 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 717#ifdef USE_LOCALE_CTYPE
bbce6d69 718 if (! curctype)
bf49b057 719 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 720#endif /* USE_LOCALE_CTYPE */
721#ifdef USE_LOCALE_COLLATE
bbce6d69 722 if (! curcoll)
bf49b057 723 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 724#endif /* USE_LOCALE_COLLATE */
725#ifdef USE_LOCALE_NUMERIC
bbce6d69 726 if (! curnum)
bf49b057 727 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 728#endif /* USE_LOCALE_NUMERIC */
bf49b057 729 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 730
5f05dabc 731#endif /* LC_ALL */
732
bf49b057 733 PerlIO_printf(Perl_error_log,
bbce6d69 734 "perl: warning: Please check that your locale settings:\n");
ef7eada9 735
3aeabbed 736#ifdef __GLIBC__
bf49b057 737 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 738 "\tLANGUAGE = %c%s%c,\n",
739 language ? '"' : '(',
740 language ? language : "unset",
741 language ? '"' : ')');
742#endif
743
bf49b057 744 PerlIO_printf(Perl_error_log,
bbce6d69 745 "\tLC_ALL = %c%s%c,\n",
746 lc_all ? '"' : '(',
747 lc_all ? lc_all : "unset",
748 lc_all ? '"' : ')');
5f05dabc 749
750 {
751 char **e;
752 for (e = environ; *e; e++) {
753 if (strnEQ(*e, "LC_", 3)
754 && strnNE(*e, "LC_ALL=", 7)
755 && (p = strchr(*e, '=')))
bf49b057 756 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 757 (int)(p - *e), *e, p + 1);
5f05dabc 758 }
759 }
760
bf49b057 761 PerlIO_printf(Perl_error_log,
bbce6d69 762 "\tLANG = %c%s%c\n",
5f05dabc 763 lang ? '"' : '(',
bbce6d69 764 lang ? lang : "unset",
765 lang ? '"' : ')');
ef7eada9 766
bf49b057 767 PerlIO_printf(Perl_error_log,
bbce6d69 768 " are supported and installed on your system.\n");
5f05dabc 769 }
ef7eada9 770
5f05dabc 771#ifdef LC_ALL
772
773 if (setlocale(LC_ALL, "C")) {
774 if (locwarn)
bf49b057 775 PerlIO_printf(Perl_error_log,
5f05dabc 776 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 777 ok = 0;
ef7eada9 778 }
5f05dabc 779 else {
780 if (locwarn)
bf49b057 781 PerlIO_printf(Perl_error_log,
5f05dabc 782 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
783 ok = -1;
784 }
bbce6d69 785
5f05dabc 786#else /* ! LC_ALL */
787
788 if (0
36477c24 789#ifdef USE_LOCALE_CTYPE
5f05dabc 790 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 791#endif /* USE_LOCALE_CTYPE */
792#ifdef USE_LOCALE_COLLATE
5f05dabc 793 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 794#endif /* USE_LOCALE_COLLATE */
795#ifdef USE_LOCALE_NUMERIC
5f05dabc 796 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 797#endif /* USE_LOCALE_NUMERIC */
5f05dabc 798 )
799 {
800 if (locwarn)
bf49b057 801 PerlIO_printf(Perl_error_log,
5f05dabc 802 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
803 ok = -1;
bbce6d69 804 }
5f05dabc 805
bbce6d69 806#endif /* ! LC_ALL */
5f05dabc 807
808#ifdef USE_LOCALE_CTYPE
809 curctype = setlocale(LC_CTYPE, Nullch);
810#endif /* USE_LOCALE_CTYPE */
811#ifdef USE_LOCALE_COLLATE
812 curcoll = setlocale(LC_COLLATE, Nullch);
813#endif /* USE_LOCALE_COLLATE */
814#ifdef USE_LOCALE_NUMERIC
815 curnum = setlocale(LC_NUMERIC, Nullch);
816#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 817 }
818
36477c24 819#ifdef USE_LOCALE_CTYPE
864dbfa3 820 new_ctype(curctype);
36477c24 821#endif /* USE_LOCALE_CTYPE */
bbce6d69 822
36477c24 823#ifdef USE_LOCALE_COLLATE
864dbfa3 824 new_collate(curcoll);
36477c24 825#endif /* USE_LOCALE_COLLATE */
bbce6d69 826
36477c24 827#ifdef USE_LOCALE_NUMERIC
864dbfa3 828 new_numeric(curnum);
36477c24 829#endif /* USE_LOCALE_NUMERIC */
ef7eada9 830
36477c24 831#endif /* USE_LOCALE */
ef7eada9 832
f0c5b223
TB		 833 return ok;
834}
835
bbce6d69 836/* Backwards compatibility. */
837int
864dbfa3 838Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 839{
864dbfa3 840 return init_i18nl10n(printwarn);
bbce6d69 841}
ef7eada9 842
36477c24 843#ifdef USE_LOCALE_COLLATE
ef7eada9 844
bbce6d69 845/*
846 * mem_collxfrm() is a bit like strxfrm() but with two important
847 * differences. First, it handles embedded NULs. Second, it allocates
848 * a bit more memory than needed for the transformed data itself.
849 * The real transformed data begins at offset sizeof(collationix).
850 * Please see sv_collxfrm() to see how this is used.
851 */
852char *
864dbfa3 853Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 854{
855 char *xbuf;
76e3520e 856 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 857
858 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
859 /* the +1 is for the terminating NUL. */
860
3280af22 861 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 862 New(171, xbuf, xAlloc, char);
bbce6d69 863 if (! xbuf)
864 goto bad;
865
3280af22
NIS		 866 *(U32*)xbuf = PL_collation_ix;
867 xout = sizeof(PL_collation_ix);
bbce6d69 868 for (xin = 0; xin < len; ) {
869 SSize_t xused;
870
871 for (;;) {
76e3520e 872 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 873 if (xused == -1)
874 goto bad;
76e3520e 875 if (xused < xAlloc - xout)
bbce6d69 876 break;
76e3520e
GS		 877 xAlloc = (2 * xAlloc) + 1;
878 Renew(xbuf, xAlloc, char);
bbce6d69 879 if (! xbuf)
880 goto bad;
881 }
ef7eada9 882
bbce6d69 883 xin += strlen(s + xin) + 1;
884 xout += xused;
885
886 /* Embedded NULs are understood but silently skipped
887 * because they make no sense in locale collation. */
888 }
ef7eada9 889
bbce6d69 890 xbuf[xout] = '\0';
3280af22 891 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 892 return xbuf;
893
894 bad:
895 Safefree(xbuf);
896 *xlen = 0;
897 return NULL;
ef7eada9
JH		 898}
899
36477c24 900#endif /* USE_LOCALE_COLLATE */
bbce6d69 901
cf93c79d
IZ		 902#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
903
904/* As a space optimization, we do not compile tables for strings of length
905 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
906 special-cased in fbm_instr().
907
908 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
909
954c1994
GS		 910/*
911=for apidoc fbm_compile
912
913Analyses the string in order to make fast searches on it using fbm_instr()
914-- the Boyer-Moore algorithm.
915
916=cut
917*/
918
378cc40b 919void
7506f9c3 920Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 921{
942e002e
GS		 922 register U8 *s;
923 register U8 *table;
79072805 924 register U32 i;
0b71040e 925 STRLEN len;
79072805
LW		 926 I32 rarest = 0;
927 U32 frequency = 256;
928
cf93c79d
IZ		 929 if (flags & FBMcf_TAIL)
930 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 931 s = (U8*)SvPV_force(sv, len);
07f14f54 932 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 933 if (len == 0) /* TAIL might be on on a zero-length string. */
934 return;
02128f11 935 if (len > 2) {
7506f9c3 936 U8 mlen;
cf93c79d
IZ		 937 unsigned char *sb;
938
7506f9c3 939 if (len > 255)
cf93c79d 940 mlen = 255;
7506f9c3
GS		 941 else
942 mlen = (U8)len;
943 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 944 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 945 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
946 memset((void*)table, mlen, 256);
947 table[-1] = (U8)flags;
02128f11 948 i = 0;
7506f9c3 949 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 950 while (s >= sb) {
951 if (table[*s] == mlen)
7506f9c3 952 table[*s] = (U8)i;
cf93c79d
IZ		 953 s--, i++;
954 }
378cc40b 955 }
bbce6d69 956 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 957 SvVALID_on(sv);
378cc40b 958
463ee0b2 959 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 960 for (i = 0; i < len; i++) {
22c35a8c 961 if (PL_freq[s[i]] < frequency) {
bbce6d69 962 rarest = i;
22c35a8c 963 frequency = PL_freq[s[i]];
378cc40b
LW		 964 }
965 }
79072805
LW		 966 BmRARE(sv) = s[rarest];
967 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 968 BmUSEFUL(sv) = 100; /* Initial value */
969 if (flags & FBMcf_TAIL)
970 SvTAIL_on(sv);
7506f9c3
GS		 971 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
972 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 973}
974
cf93c79d
IZ		 975/* If SvTAIL(littlestr), it has a fake '\n' at end. */
976/* If SvTAIL is actually due to \Z or \z, this gives false positives
977 if multiline */
978
954c1994
GS		 979/*
980=for apidoc fbm_instr
981
982Returns the location of the SV in the string delimited by C<str> and
983C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
984does not have to be fbm_compiled, but the search will not be as fast
985then.
986
987=cut
988*/
989
378cc40b 990char *
864dbfa3 991Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 992{
a687059c 993 register unsigned char *s;
cf93c79d
IZ		 994 STRLEN l;
995 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
996 register STRLEN littlelen = l;
997 register I32 multiline = flags & FBMrf_MULTILINE;
998
999 if (bigend - big < littlelen) {
cf93c79d
IZ		 1000 if ( SvTAIL(littlestr)
1001 && (bigend - big == littlelen - 1)
1002 && (littlelen == 1
155aba94 1003 || (*big == *little && memEQ(big, little, littlelen - 1))))
cf93c79d
IZ		 1004 return (char*)big;
1005 return Nullch;
1006 }
378cc40b 1007
cf93c79d 1008 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1009
1010 if (littlelen == 1) {
1011 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1012 /* Know that bigend != big. */
1013 if (bigend[-1] == '\n')
1014 return (char *)(bigend - 1);
1015 return (char *) bigend;
1016 }
1017 s = big;
1018 while (s < bigend) {
1019 if (*s == *little)
1020 return (char *)s;
1021 s++;
1022 }
1023 if (SvTAIL(littlestr))
1024 return (char *) bigend;
1025 return Nullch;
1026 }
1027 if (!littlelen)
1028 return (char*)big; /* Cannot be SvTAIL! */
1029
1030 /* littlelen is 2 */
1031 if (SvTAIL(littlestr) && !multiline) {
1032 if (bigend[-1] == '\n' && bigend[-2] == *little)
1033 return (char*)bigend - 2;
1034 if (bigend[-1] == *little)
1035 return (char*)bigend - 1;
1036 return Nullch;
1037 }
1038 {
1039 /* This should be better than FBM if c1 == c2, and almost
1040 as good otherwise: maybe better since we do less indirection.
1041 And we save a lot of memory by caching no table. */
1042 register unsigned char c1 = little[0];
1043 register unsigned char c2 = little[1];
1044
1045 s = big + 1;
1046 bigend--;
1047 if (c1 != c2) {
1048 while (s <= bigend) {
1049 if (s[0] == c2) {
1050 if (s[-1] == c1)
1051 return (char*)s - 1;
1052 s += 2;
1053 continue;
3fe6f2dc 1054 }
cf93c79d
IZ		 1055 next_chars:
1056 if (s[0] == c1) {
1057 if (s == bigend)
1058 goto check_1char_anchor;
1059 if (s[1] == c2)
1060 return (char*)s;
1061 else {
1062 s++;
1063 goto next_chars;
1064 }
1065 }
1066 else
1067 s += 2;
1068 }
1069 goto check_1char_anchor;
1070 }
1071 /* Now c1 == c2 */
1072 while (s <= bigend) {
1073 if (s[0] == c1) {
1074 if (s[-1] == c1)
1075 return (char*)s - 1;
1076 if (s == bigend)
1077 goto check_1char_anchor;
1078 if (s[1] == c1)
1079 return (char*)s;
1080 s += 3;
02128f11 1081 }
c277df42 1082 else
cf93c79d 1083 s += 2;
c277df42 1084 }
c277df42 1085 }
cf93c79d
IZ		 1086 check_1char_anchor: /* One char and anchor! */
1087 if (SvTAIL(littlestr) && (*bigend == *little))
1088 return (char *)bigend; /* bigend is already decremented. */
1089 return Nullch;
d48672a2 1090 }
cf93c79d 1091 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1092 s = bigend - littlelen;
7506f9c3 1093 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1094 /* Automatically of length > 2 */
1095 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1096 {
bbce6d69 1097 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1098 }
1099 if (s[1] == *little
1100 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1101 {
cf93c79d 1102 return (char*)s + 1; /* how sweet it is */
7506f9c3 1103 }
02128f11
IZ		 1104 return Nullch;
1105 }
cf93c79d
IZ		 1106 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1107 char *b = ninstr((char*)big,(char*)bigend,
1108 (char*)little, (char*)little + littlelen);
1109
1110 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1111 /* Chop \n from littlestr: */
1112 s = bigend - littlelen + 1;
7506f9c3
GS		 1113 if (*s == *little
1114 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1115 {
3fe6f2dc 1116 return (char*)s;
7506f9c3 1117 }
cf93c79d 1118 return Nullch;
a687059c 1119 }
cf93c79d 1120 return b;
a687059c 1121 }
cf93c79d
IZ		 1122
1123 { /* Do actual FBM. */
1124 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1125 register unsigned char *oldlittle;
1126
1127 if (littlelen > bigend - big)
1128 return Nullch;
1129 --littlelen; /* Last char found by table lookup */
1130
1131 s = big + littlelen;
1132 little += littlelen; /* last char */
1133 oldlittle = little;
1134 if (s < bigend) {
1135 register I32 tmp;
1136
1137 top2:
1138 /*SUPPRESS 560*/
7506f9c3 1139 if ((tmp = table[*s])) {
62b28dd9 1140#ifdef POINTERRIGOR
cf93c79d
IZ		 1141 if (bigend - s > tmp) {
1142 s += tmp;
1143 goto top2;
1144 }
bbce6d69 1145 s += tmp;
62b28dd9 1146#else
cf93c79d 1147 if ((s += tmp) < bigend)
62b28dd9 1148 goto top2;
cf93c79d
IZ		 1149#endif
1150 goto check_end;
1151 }
1152 else { /* less expensive than calling strncmp() */
1153 register unsigned char *olds = s;
1154
1155 tmp = littlelen;
1156
1157 while (tmp--) {
1158 if (*--s == *--little)
1159 continue;
cf93c79d
IZ		 1160 s = olds + 1; /* here we pay the price for failure */
1161 little = oldlittle;
1162 if (s < bigend) /* fake up continue to outer loop */
1163 goto top2;
1164 goto check_end;
1165 }
1166 return (char *)s;
a687059c 1167 }
378cc40b 1168 }
cf93c79d
IZ		 1169 check_end:
1170 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1171 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1172 return (char*)bigend - littlelen;
1173 return Nullch;
378cc40b 1174 }
378cc40b
LW		 1175}
1176
c277df42
IZ		 1177/* start_shift, end_shift are positive quantities which give offsets
1178 of ends of some substring of bigstr.
1179 If `last' we want the last occurence.
1180 old_posp is the way of communication between consequent calls if
1181 the next call needs to find the .
1182 The initial *old_posp should be -1.
cf93c79d
IZ		 1183
1184 Note that we take into account SvTAIL, so one can get extra
1185 optimizations if _ALL flag is set.
c277df42
IZ		 1186 */
1187
cf93c79d
IZ		 1188/* If SvTAIL is actually due to \Z or \z, this gives false positives
1189 if PL_multiline. In fact if !PL_multiline the autoritative answer
1190 is not supported yet. */
1191
378cc40b 1192char *
864dbfa3 1193Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1194{
5c0ca799 1195 dTHR;
a687059c
LW		 1196 register unsigned char *s, *x;
1197 register unsigned char *big;
79072805
LW		 1198 register I32 pos;
1199 register I32 previous;
1200 register I32 first;
a687059c 1201 register unsigned char *little;
c277df42 1202 register I32 stop_pos;
a687059c 1203 register unsigned char *littleend;
c277df42 1204 I32 found = 0;
378cc40b 1205
c277df42 1206 if (*old_posp == -1
3280af22 1207 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1208 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1209 cant_find:
1210 if ( BmRARE(littlestr) == '\n'
1211 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1212 little = (unsigned char *)(SvPVX(littlestr));
1213 littleend = little + SvCUR(littlestr);
1214 first = *little++;
1215 goto check_tail;
1216 }
378cc40b 1217 return Nullch;
cf93c79d
IZ		 1218 }
1219
463ee0b2 1220 little = (unsigned char *)(SvPVX(littlestr));
79072805 1221 littleend = little + SvCUR(littlestr);
378cc40b 1222 first = *little++;
c277df42 1223 /* The value of pos we can start at: */
79072805 1224 previous = BmPREVIOUS(littlestr);
463ee0b2 1225 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1226 /* The value of pos we can stop at: */
1227 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1228 if (previous + start_shift > stop_pos) {
1229 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1230 goto check_tail;
1231 return Nullch;
1232 }
c277df42 1233 while (pos < previous + start_shift) {
3280af22 1234 if (!(pos += PL_screamnext[pos]))
cf93c79d 1235 goto cant_find;
378cc40b 1236 }
de3bb511 1237#ifdef POINTERRIGOR
bbce6d69 1238 do {
ef64f398 1239 if (pos >= stop_pos) break;
bbce6d69 1240 if (big[pos-previous] != first)
1241 continue;
1242 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1243 if (*s++ != *x++) {
1244 s--;
1245 break;
de3bb511 1246 }
bbce6d69 1247 }
c277df42
IZ		 1248 if (s == littleend) {
1249 *old_posp = pos;
1250 if (!last) return (char *)(big+pos-previous);
1251 found = 1;
1252 }
6b88bc9c 1253 } while ( pos += PL_screamnext[pos] );
c277df42 1254 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1255#else /* !POINTERRIGOR */
1256 big -= previous;
bbce6d69 1257 do {
ef64f398 1258 if (pos >= stop_pos) break;
bbce6d69 1259 if (big[pos] != first)
1260 continue;
1261 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1262 if (*s++ != *x++) {
1263 s--;
1264 break;
378cc40b 1265 }
bbce6d69 1266 }
c277df42
IZ		 1267 if (s == littleend) {
1268 *old_posp = pos;
1269 if (!last) return (char *)(big+pos);
1270 found = 1;
1271 }
3280af22 1272 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1273 if (last && found)
1274 return (char *)(big+(*old_posp));
de3bb511 1275#endif /* POINTERRIGOR */
cf93c79d
IZ		 1276 check_tail:
1277 if (!SvTAIL(littlestr) || (end_shift > 0))
1278 return Nullch;
1279 /* Ignore the trailing "\n". This code is not microoptimized */
1280 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1281 stop_pos = littleend - little; /* Actual littlestr len */
1282 if (stop_pos == 0)
1283 return (char*)big;
1284 big -= stop_pos;
1285 if (*big == first
1286 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1287 return (char*)big;
1288 return Nullch;
8d063cd8
LW		 1289}
1290
79072805 1291I32
864dbfa3 1292Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1293{
bbce6d69 1294 register U8 *a = (U8 *)s1;
1295 register U8 *b = (U8 *)s2;
79072805 1296 while (len--) {
22c35a8c 1297 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1298 return 1;
1299 a++,b++;
1300 }
1301 return 0;
1302}
1303
1304I32
864dbfa3 1305Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1306{
1307 register U8 *a = (U8 *)s1;
1308 register U8 *b = (U8 *)s2;
1309 while (len--) {
22c35a8c 1310 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1311 return 1;
1312 a++,b++;
79072805
LW		 1313 }
1314 return 0;
1315}
1316
8d063cd8
LW		 1317/* copy a string to a safe spot */
1318
954c1994
GS		 1319/*
1320=for apidoc savepv
1321
1322Copy a string to a safe spot. This does not use an SV.
1323
1324=cut
1325*/
1326
8d063cd8 1327char *
864dbfa3 1328Perl_savepv(pTHX_ const char *sv)
8d063cd8 1329{
a687059c 1330 register char *newaddr;
8d063cd8 1331
79072805
LW		 1332 New(902,newaddr,strlen(sv)+1,char);
1333 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1334 return newaddr;
1335}
1336
a687059c
LW		 1337/* same thing but with a known length */
1338
954c1994
GS		 1339/*
1340=for apidoc savepvn
1341
1342Copy a string to a safe spot. The C<len> indicates number of bytes to
1343copy. This does not use an SV.
1344
1345=cut
1346*/
1347
a687059c 1348char *
864dbfa3 1349Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1350{
1351 register char *newaddr;
1352
1353 New(903,newaddr,len+1,char);
79072805 1354 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1355 newaddr[len] = '\0'; /* is now */
1356 return newaddr;
1357}
1358
cea2e8a9 1359/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1360
76e3520e 1361STATIC SV *
cea2e8a9 1362S_mess_alloc(pTHX)
fc36a67e 1363{
e72dc28c 1364 dTHR;
fc36a67e 1365 SV *sv;
1366 XPVMG *any;
1367
e72dc28c
GS		 1368 if (!PL_dirty)
1369 return sv_2mortal(newSVpvn("",0));
1370
0372dbb6
GS		 1371 if (PL_mess_sv)
1372 return PL_mess_sv;
1373
fc36a67e 1374 /* Create as PVMG now, to avoid any upgrading later */
1375 New(905, sv, 1, SV);
1376 Newz(905, any, 1, XPVMG);
1377 SvFLAGS(sv) = SVt_PVMG;
1378 SvANY(sv) = (void*)any;
1379 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1380 PL_mess_sv = sv;
fc36a67e 1381 return sv;
1382}
1383
c5be433b 1384#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1385char *
1386Perl_form_nocontext(const char* pat, ...)
1387{
1388 dTHX;
c5be433b 1389 char *retval;
cea2e8a9
GS		 1390 va_list args;
1391 va_start(args, pat);
c5be433b 1392 retval = vform(pat, &args);
cea2e8a9 1393 va_end(args);
c5be433b 1394 return retval;
cea2e8a9 1395}
c5be433b 1396#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1397
8990e307 1398char *
864dbfa3 1399Perl_form(pTHX_ const char* pat, ...)
8990e307 1400{
c5be433b 1401 char *retval;
46fc3d4c 1402 va_list args;
46fc3d4c 1403 va_start(args, pat);
c5be433b 1404 retval = vform(pat, &args);
46fc3d4c 1405 va_end(args);
c5be433b
GS		 1406 return retval;
1407}
1408
1409char *
1410Perl_vform(pTHX_ const char *pat, va_list *args)
1411{
1412 SV *sv = mess_alloc();
1413 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1414 return SvPVX(sv);
46fc3d4c 1415}
a687059c 1416
5a844595
GS		 1417#if defined(PERL_IMPLICIT_CONTEXT)
1418SV *
1419Perl_mess_nocontext(const char *pat, ...)
1420{
1421 dTHX;
1422 SV *retval;
1423 va_list args;
1424 va_start(args, pat);
1425 retval = vmess(pat, &args);
1426 va_end(args);
1427 return retval;
1428}
1429#endif /* PERL_IMPLICIT_CONTEXT */
1430
06bf62c7 1431SV *
5a844595
GS		 1432Perl_mess(pTHX_ const char *pat, ...)
1433{
1434 SV *retval;
1435 va_list args;
1436 va_start(args, pat);
1437 retval = vmess(pat, &args);
1438 va_end(args);
1439 return retval;
1440}
1441
1442SV *
1443Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1444{
e72dc28c 1445 SV *sv = mess_alloc();
46fc3d4c 1446 static char dgd[] = " during global destruction.\n";
1447
fc36a67e 1448 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1449 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1450 dTHR;
57843af0 1451 if (CopLINE(PL_curcop))
ed094faf
GS		 1452 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1453 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1454 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1455 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1456 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1457 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1458 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1459 line_mode ? "line" : "chunk",
1460 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1461 }
9efbc0eb 1462#ifdef USE_THREADS
e8e6f333
GS		 1463 if (thr->tid)
1464 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1465#endif
515f54a1 1466 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1467 }
06bf62c7 1468 return sv;
a687059c
LW		 1469}
1470
c5be433b
GS		 1471OP *
1472Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1473{
5dc0d613 1474 dTHR;
36477c24 1475 char *message;
3280af22 1476 int was_in_eval = PL_in_eval;
36477c24 1477 HV *stash;
1478 GV *gv;
1479 CV *cv;
06bf62c7
GS		 1480 SV *msv;
1481 STRLEN msglen;
36477c24 1482
bf49b057 1483 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1484 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1485 thr, PL_curstack, PL_mainstack));
36477c24 1486
06bf62c7 1487 if (pat) {
5a844595
GS		 1488 msv = vmess(pat, args);
1489 if (PL_errors && SvCUR(PL_errors)) {
1490 sv_catsv(PL_errors, msv);
1491 message = SvPV(PL_errors, msglen);
1492 SvCUR_set(PL_errors, 0);
1493 }
1494 else
1495 message = SvPV(msv,msglen);
06bf62c7
GS		 1496 }
1497 else {
1498 message = Nullch;
0f79a09d 1499 msglen = 0;
06bf62c7 1500 }
36477c24 1501
bf49b057 1502 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1503 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1504 thr, message, PL_diehook));
3280af22 1505 if (PL_diehook) {
cea2e8a9 1506 /* sv_2cv might call Perl_croak() */
3280af22 1507 SV *olddiehook = PL_diehook;
1738f5c4 1508 ENTER;
3280af22
NIS		 1509 SAVESPTR(PL_diehook);
1510 PL_diehook = Nullsv;
1738f5c4
CS		 1511 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1512 LEAVE;
1513 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1514 dSP;
774d564b 1515 SV *msg;
1516
1517 ENTER;
79cb57f6 1518 if (message) {
06bf62c7 1519 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1520 SvREADONLY_on(msg);
1521 SAVEFREESV(msg);
1522 }
1523 else {
1524 msg = ERRSV;
1525 }
1738f5c4 1526
e788e7d3 1527 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1528 PUSHMARK(SP);
1738f5c4
CS		 1529 XPUSHs(msg);
1530 PUTBACK;
0cdb2077 1531 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1532 POPSTACK;
774d564b 1533 LEAVE;
1738f5c4 1534 }
36477c24 1535 }
1536
06bf62c7 1537 PL_restartop = die_where(message, msglen);
bf49b057 1538 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1539 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1540 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1541 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1542 JMPENV_JUMP(3);
3280af22 1543 return PL_restartop;
36477c24 1544}
1545
c5be433b 1546#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1547OP *
1548Perl_die_nocontext(const char* pat, ...)
a687059c 1549{
cea2e8a9
GS		 1550 dTHX;
1551 OP *o;
a687059c 1552 va_list args;
cea2e8a9 1553 va_start(args, pat);
c5be433b 1554 o = vdie(pat, &args);
cea2e8a9
GS		 1555 va_end(args);
1556 return o;
1557}
c5be433b 1558#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1559
1560OP *
1561Perl_die(pTHX_ const char* pat, ...)
1562{
1563 OP *o;
1564 va_list args;
1565 va_start(args, pat);
c5be433b 1566 o = vdie(pat, &args);
cea2e8a9
GS		 1567 va_end(args);
1568 return o;
1569}
1570
c5be433b
GS		 1571void
1572Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1573{
1574 dTHR;
de3bb511 1575 char *message;
748a9306
LW		 1576 HV *stash;
1577 GV *gv;
1578 CV *cv;
06bf62c7
GS		 1579 SV *msv;
1580 STRLEN msglen;
a687059c 1581
5a844595
GS		 1582 msv = vmess(pat, args);
1583 if (PL_errors && SvCUR(PL_errors)) {
1584 sv_catsv(PL_errors, msv);
1585 message = SvPV(PL_errors, msglen);
1586 SvCUR_set(PL_errors, 0);
1587 }
1588 else
1589 message = SvPV(msv,msglen);
1590
b900a521
JH		 1591 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1592 PTR2UV(thr), message));
5a844595 1593
3280af22 1594 if (PL_diehook) {
cea2e8a9 1595 /* sv_2cv might call Perl_croak() */
3280af22 1596 SV *olddiehook = PL_diehook;
1738f5c4 1597 ENTER;
3280af22
NIS		 1598 SAVESPTR(PL_diehook);
1599 PL_diehook = Nullsv;
20cec16a 1600 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1601 LEAVE;
1602 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1603 dSP;
774d564b 1604 SV *msg;
1605
1606 ENTER;
06bf62c7 1607 msg = newSVpvn(message, msglen);
774d564b 1608 SvREADONLY_on(msg);
1609 SAVEFREESV(msg);
20cec16a 1610
e788e7d3 1611 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1612 PUSHMARK(SP);
1738f5c4 1613 XPUSHs(msg);
20cec16a 1614 PUTBACK;
864dbfa3 1615 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1616 POPSTACK;
774d564b 1617 LEAVE;
20cec16a 1618 }
748a9306 1619 }
3280af22 1620 if (PL_in_eval) {
06bf62c7 1621 PL_restartop = die_where(message, msglen);
6224f72b 1622 JMPENV_JUMP(3);
a0d0e21e 1623 }
d175a3f0
GS		 1624 {
1625#ifdef USE_SFIO
1626 /* SFIO can really mess with your errno */
1627 int e = errno;
1628#endif
bf49b057
GS		 1629 PerlIO *serr = Perl_error_log;
1630
1631 PerlIO_write(serr, message, msglen);
1632 (void)PerlIO_flush(serr);
d175a3f0
GS		 1633#ifdef USE_SFIO
1634 errno = e;
1635#endif
1636 }
f86702cc 1637 my_failure_exit();
a687059c
LW		 1638}
1639
c5be433b 1640#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1641void
cea2e8a9 1642Perl_croak_nocontext(const char *pat, ...)
a687059c 1643{
cea2e8a9 1644 dTHX;
a687059c 1645 va_list args;
cea2e8a9 1646 va_start(args, pat);
c5be433b 1647 vcroak(pat, &args);
cea2e8a9
GS		 1648 /* NOTREACHED */
1649 va_end(args);
1650}
1651#endif /* PERL_IMPLICIT_CONTEXT */
1652
954c1994
GS		 1653/*
1654=for apidoc croak
1655
1656This is the XSUB-writer's interface to Perl's C<die> function. Use this
1657function the same way you use the C C<printf> function. See
1658C<warn>.
1659
1660=cut
1661*/
1662
cea2e8a9
GS		 1663void
1664Perl_croak(pTHX_ const char *pat, ...)
1665{
1666 va_list args;
1667 va_start(args, pat);
c5be433b 1668 vcroak(pat, &args);
cea2e8a9
GS		 1669 /* NOTREACHED */
1670 va_end(args);
1671}
1672
c5be433b
GS		 1673void
1674Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1675{
de3bb511 1676 char *message;
748a9306
LW		 1677 HV *stash;
1678 GV *gv;
1679 CV *cv;
06bf62c7
GS		 1680 SV *msv;
1681 STRLEN msglen;
a687059c 1682
5a844595 1683 msv = vmess(pat, args);
06bf62c7 1684 message = SvPV(msv, msglen);
a687059c 1685
3280af22 1686 if (PL_warnhook) {
cea2e8a9 1687 /* sv_2cv might call Perl_warn() */
11343788 1688 dTHR;
3280af22 1689 SV *oldwarnhook = PL_warnhook;
1738f5c4 1690 ENTER;
3280af22
NIS		 1691 SAVESPTR(PL_warnhook);
1692 PL_warnhook = Nullsv;
20cec16a 1693 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1694 LEAVE;
1695 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1696 dSP;
774d564b 1697 SV *msg;
1698
1699 ENTER;
06bf62c7 1700 msg = newSVpvn(message, msglen);
774d564b 1701 SvREADONLY_on(msg);
1702 SAVEFREESV(msg);
1703
e788e7d3 1704 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1705 PUSHMARK(SP);
774d564b 1706 XPUSHs(msg);
20cec16a 1707 PUTBACK;
864dbfa3 1708 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1709 POPSTACK;
774d564b 1710 LEAVE;
20cec16a 1711 return;
1712 }
748a9306 1713 }
bf49b057
GS		 1714 {
1715 PerlIO *serr = Perl_error_log;
1716
1717 PerlIO_write(serr, message, msglen);
a687059c 1718#ifdef LEAKTEST
bf49b057
GS		 1719 DEBUG_L(*message == '!'
1720 ? (xstat(message[1]=='!'
1721 ? (message[2]=='!' ? 2 : 1)
1722 : 0)
1723 , 0)
1724 : 0);
a687059c 1725#endif
bf49b057
GS		 1726 (void)PerlIO_flush(serr);
1727 }
a687059c 1728}
8d063cd8 1729
c5be433b 1730#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1731void
1732Perl_warn_nocontext(const char *pat, ...)
1733{
1734 dTHX;
1735 va_list args;
1736 va_start(args, pat);
c5be433b 1737 vwarn(pat, &args);
cea2e8a9
GS		 1738 va_end(args);
1739}
1740#endif /* PERL_IMPLICIT_CONTEXT */
1741
954c1994
GS		 1742/*
1743=for apidoc warn
1744
1745This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1746function the same way you use the C C<printf> function. See
1747C<croak>.
1748
1749=cut
1750*/
1751
cea2e8a9
GS		 1752void
1753Perl_warn(pTHX_ const char *pat, ...)
1754{
1755 va_list args;
1756 va_start(args, pat);
c5be433b 1757 vwarn(pat, &args);
cea2e8a9
GS		 1758 va_end(args);
1759}
1760
c5be433b
GS		 1761#if defined(PERL_IMPLICIT_CONTEXT)
1762void
1763Perl_warner_nocontext(U32 err, const char *pat, ...)
1764{
1765 dTHX;
1766 va_list args;
1767 va_start(args, pat);
1768 vwarner(err, pat, &args);
1769 va_end(args);
1770}
1771#endif /* PERL_IMPLICIT_CONTEXT */
1772
599cee73 1773void
864dbfa3 1774Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1775{
1776 va_list args;
c5be433b
GS		 1777 va_start(args, pat);
1778 vwarner(err, pat, &args);
1779 va_end(args);
1780}
1781
1782void
1783Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1784{
1785 dTHR;
599cee73
PM		 1786 char *message;
1787 HV *stash;
1788 GV *gv;
1789 CV *cv;
06bf62c7
GS		 1790 SV *msv;
1791 STRLEN msglen;
599cee73 1792
5a844595 1793 msv = vmess(pat, args);
06bf62c7 1794 message = SvPV(msv, msglen);
599cee73
PM		 1795
1796 if (ckDEAD(err)) {
1797#ifdef USE_THREADS
b900a521 1798 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1799#endif /* USE_THREADS */
1800 if (PL_diehook) {
cea2e8a9 1801 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1802 SV *olddiehook = PL_diehook;
1803 ENTER;
1804 SAVESPTR(PL_diehook);
1805 PL_diehook = Nullsv;
1806 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1807 LEAVE;
1808 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1809 dSP;
1810 SV *msg;
1811
1812 ENTER;
06bf62c7 1813 msg = newSVpvn(message, msglen);
599cee73
PM		 1814 SvREADONLY_on(msg);
1815 SAVEFREESV(msg);
1816
1817 PUSHMARK(sp);
1818 XPUSHs(msg);
1819 PUTBACK;
864dbfa3 1820 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1821
1822 LEAVE;
1823 }
1824 }
1825 if (PL_in_eval) {
06bf62c7 1826 PL_restartop = die_where(message, msglen);
599cee73
PM		 1827 JMPENV_JUMP(3);
1828 }
bf49b057
GS		 1829 {
1830 PerlIO *serr = Perl_error_log;
1831 PerlIO_write(serr, message, msglen);
1832 (void)PerlIO_flush(serr);
1833 }
599cee73
PM		 1834 my_failure_exit();
1835
1836 }
1837 else {
1838 if (PL_warnhook) {
cea2e8a9 1839 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1840 dTHR;
1841 SV *oldwarnhook = PL_warnhook;
1842 ENTER;
1843 SAVESPTR(PL_warnhook);
1844 PL_warnhook = Nullsv;
1845 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1846 LEAVE;
1847 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1848 dSP;
1849 SV *msg;
1850
1851 ENTER;
06bf62c7 1852 msg = newSVpvn(message, msglen);
599cee73
PM		 1853 SvREADONLY_on(msg);
1854 SAVEFREESV(msg);
1855
1856 PUSHMARK(sp);
1857 XPUSHs(msg);
1858 PUTBACK;
864dbfa3 1859 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1860
1861 LEAVE;
1862 return;
1863 }
1864 }
bf49b057
GS		 1865 {
1866 PerlIO *serr = Perl_error_log;
1867 PerlIO_write(serr, message, msglen);
599cee73 1868#ifdef LEAKTEST
bf49b057 1869 DEBUG_L(xstat());
599cee73 1870#endif
bf49b057
GS		 1871 (void)PerlIO_flush(serr);
1872 }
599cee73
PM		 1873 }
1874}
1875
a0d0e21e 1876#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1877#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1878void
864dbfa3 1879Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1880{
f2517201
GS		 1881#ifndef PERL_USE_SAFE_PUTENV
1882 /* most putenv()s leak, so we manipulate environ directly */
79072805 1883 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1884
3280af22 1885 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1886 I32 j;
1887 I32 max;
fe14fcc3
LW		 1888 char **tmpenv;
1889
de3bb511 1890 /*SUPPRESS 530*/
fe14fcc3 1891 for (max = i; environ[max]; max++) ;
f2517201
GS		 1892 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1893 for (j=0; j<max; j++) { /* copy environment */
1894 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1895 strcpy(tmpenv[j], environ[j]);
1896 }
fe14fcc3
LW		 1897 tmpenv[max] = Nullch;
1898 environ = tmpenv; /* tell exec where it is now */
1899 }
a687059c 1900 if (!val) {
f2517201 1901 safesysfree(environ[i]);
a687059c
LW		 1902 while (environ[i]) {
1903 environ[i] = environ[i+1];
1904 i++;
1905 }
1906 return;
1907 }
8d063cd8 1908 if (!environ[i]) { /* does not exist yet */
f2517201 1909 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1910 environ[i+1] = Nullch; /* make sure it's null terminated */
1911 }
fe14fcc3 1912 else
f2517201
GS		 1913 safesysfree(environ[i]);
1914 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1915
a687059c 1916 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1917
1918#else /* PERL_USE_SAFE_PUTENV */
1919 char *new_env;
1920
1921 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1922 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1923 (void)putenv(new_env);
1924#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1925}
1926
d308986b
GS		 1927#else /* WIN32 || __CYGWIN__ */
1928#if defined(__CYGWIN__)
1cab015a
EF		 1929/*
1930 * Save environ of perl.exe, currently Cygwin links in separate environ's
1931 * for each exe/dll. Probably should be a member of impure_ptr.
1932 */
1933static char ***Perl_main_environ;
1934
1935EXTERN_C void
1936Perl_my_setenv_init(char ***penviron)
1937{
1938 Perl_main_environ = penviron;
1939}
1940
1941void
0a9fdc5d 1942Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 1943{
1944 /* You can not directly manipulate the environ[] array because
1945 * the routines do some additional work that syncs the Cygwin
1946 * environment with the Windows environment.
1947 */
1948 char *oldstr = environ[setenv_getix(nam)];
1949
1950 if (!val) {
1951 if (!oldstr)
1952 return;
1953 unsetenv(nam);
d702ae42 1954 safesysfree(oldstr);
1cab015a
EF		 1955 return;
1956 }
1957 setenv(nam, val, 1);
1958 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1959 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1960 safesysfree(oldstr);
1cab015a 1961}
3e3baf6d 1962#else /* if WIN32 */
68dc0745 1963
1964void
864dbfa3 1965Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1966{
3e3baf6d
TB		 1967
1968#ifdef USE_WIN32_RTL_ENV
1969
68dc0745 1970 register char *envstr;
1971 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1972 STRLEN vallen;
1973 char *oldstr = environ[setenv_getix(nam)];
1974
1975 /* putenv() has totally broken semantics in both the Borland
1976 * and Microsoft CRTLs. They either store the passed pointer in
1977 * the environment without making a copy, or make a copy and don't
1978 * free it. And on top of that, they dont free() old entries that
1979 * are being replaced/deleted. This means the caller must
1980 * free any old entries somehow, or we end up with a memory
1981 * leak every time my_setenv() is called. One might think
1982 * one could directly manipulate environ[], like the UNIX code
1983 * above, but direct changes to environ are not allowed when
1984 * calling putenv(), since the RTLs maintain an internal
1985 * *copy* of environ[]. Bad, bad, *bad* stink.
1986 * GSAR 97-06-07
1987 */
68dc0745 1988
3e3baf6d
TB		 1989 if (!val) {
1990 if (!oldstr)
1991 return;
1992 val = "";
1993 vallen = 0;
1994 }
1995 else
1996 vallen = strlen(val);
f2517201 1997 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1998 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1999 (void)PerlEnv_putenv(envstr);
3e3baf6d 2000 if (oldstr)
f2517201 2001 safesysfree(oldstr);
3e3baf6d 2002#ifdef _MSC_VER
f2517201 2003 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2004#endif
2005
2006#else /* !USE_WIN32_RTL_ENV */
2007
ac5c734f
GS		 2008 register char *envstr;
2009 STRLEN len = strlen(nam) + 3;
2010 if (!val) {
2011 val = "";
2012 }
2013 len += strlen(val);
2014 New(904, envstr, len, char);
2015 (void)sprintf(envstr,"%s=%s",nam,val);
2016 (void)PerlEnv_putenv(envstr);
2017 Safefree(envstr);
3e3baf6d
TB		 2018
2019#endif
2020}
2021
2022#endif /* WIN32 */
1cab015a 2023#endif
3e3baf6d
TB		 2024
2025I32
864dbfa3 2026Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2027{
2028 register I32 i, len = strlen(nam);
2029
2030 for (i = 0; environ[i]; i++) {
2031 if (
2032#ifdef WIN32
2033 strnicmp(environ[i],nam,len) == 0
2034#else
2035 strnEQ(environ[i],nam,len)
2036#endif
2037 && environ[i][len] == '=')
2038 break; /* strnEQ must come first to avoid */
2039 } /* potential SEGV's */
2040 return i;
68dc0745 2041}
2042
a0d0e21e 2043#endif /* !VMS */
378cc40b 2044
16d20bd9 2045#ifdef UNLINK_ALL_VERSIONS
79072805 2046I32
864dbfa3 2047Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2048{
79072805 2049 I32 i;
378cc40b 2050
6ad3d225 2051 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2052 return i ? 0 : -1;
2053}
2054#endif
2055
7a3f2258 2056/* this is a drop-in replacement for bcopy() */
85e6fe83 2057#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2058char *
7a3f2258 2059Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2060{
2061 char *retval = to;
2062
7c0587c8
LW		 2063 if (from - to >= 0) {
2064 while (len--)
2065 *to++ = *from++;
2066 }
2067 else {
2068 to += len;
2069 from += len;
2070 while (len--)
faf8582f 2071 *(--to) = *(--from);
7c0587c8 2072 }
378cc40b
LW		 2073 return retval;
2074}
ffed7fef 2075#endif
378cc40b 2076
7a3f2258 2077/* this is a drop-in replacement for memset() */
fc36a67e 2078#ifndef HAS_MEMSET
2079void *
7a3f2258 2080Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2081{
2082 char *retval = loc;
2083
2084 while (len--)
2085 *loc++ = ch;
2086 return retval;
2087}
2088#endif
2089
7a3f2258 2090/* this is a drop-in replacement for bzero() */
7c0587c8 2091#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2092char *
7a3f2258 2093Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2094{
2095 char *retval = loc;
2096
2097 while (len--)
2098 *loc++ = 0;
2099 return retval;
2100}
2101#endif
7c0587c8 2102
7a3f2258 2103/* this is a drop-in replacement for memcmp() */
36477c24 2104#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2105I32
7a3f2258 2106Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2107{
36477c24 2108 register U8 *a = (U8 *)s1;
2109 register U8 *b = (U8 *)s2;
79072805 2110 register I32 tmp;
7c0587c8
LW		 2111
2112 while (len--) {
36477c24 2113 if (tmp = *a++ - *b++)
7c0587c8
LW		 2114 return tmp;
2115 }
2116 return 0;
2117}
36477c24 2118#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2119
fe14fcc3 2120#ifndef HAS_VPRINTF
a687059c 2121
85e6fe83 2122#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2123char *
2124#else
2125int
2126#endif
08105a92 2127vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2128{
2129 FILE fakebuf;
2130
2131 fakebuf._ptr = dest;
2132 fakebuf._cnt = 32767;
35c8bce7
LW		 2133#ifndef _IOSTRG
2134#define _IOSTRG 0
2135#endif
a687059c
LW		 2136 fakebuf._flag = _IOWRT|_IOSTRG;
2137 _doprnt(pat, args, &fakebuf); /* what a kludge */
2138 (void)putc('\0', &fakebuf);
85e6fe83 2139#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2140 return(dest);
2141#else
2142 return 0; /* perl doesn't use return value */
2143#endif
2144}
2145
fe14fcc3 2146#endif /* HAS_VPRINTF */
a687059c
LW		 2147
2148#ifdef MYSWAP
ffed7fef 2149#if BYTEORDER != 0x4321
a687059c 2150short
864dbfa3 2151Perl_my_swap(pTHX_ short s)
a687059c
LW		 2152{
2153#if (BYTEORDER & 1) == 0
2154 short result;
2155
2156 result = ((s & 255) << 8) + ((s >> 8) & 255);
2157 return result;
2158#else
2159 return s;
2160#endif
2161}
2162
2163long
864dbfa3 2164Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2165{
2166 union {
2167 long result;
ffed7fef 2168 char c[sizeof(long)];
a687059c
LW		 2169 } u;
2170
ffed7fef 2171#if BYTEORDER == 0x1234
a687059c
LW		 2172 u.c[0] = (l >> 24) & 255;
2173 u.c[1] = (l >> 16) & 255;
2174 u.c[2] = (l >> 8) & 255;
2175 u.c[3] = l & 255;
2176 return u.result;
2177#else
ffed7fef 2178#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2179 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2180#else
79072805
LW		 2181 register I32 o;
2182 register I32 s;
a687059c 2183
ffed7fef
LW		 2184 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2185 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2186 }
2187 return u.result;
2188#endif
2189#endif
2190}
2191
2192long
864dbfa3 2193Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2194{
2195 union {
2196 long l;
ffed7fef 2197 char c[sizeof(long)];
a687059c
LW		 2198 } u;
2199
ffed7fef 2200#if BYTEORDER == 0x1234
a687059c
LW		 2201 u.c[0] = (l >> 24) & 255;
2202 u.c[1] = (l >> 16) & 255;
2203 u.c[2] = (l >> 8) & 255;
2204 u.c[3] = l & 255;
2205 return u.l;
2206#else
ffed7fef 2207#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2208 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2209#else
79072805
LW		 2210 register I32 o;
2211 register I32 s;
a687059c
LW		 2212
2213 u.l = l;
2214 l = 0;
ffed7fef
LW		 2215 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2216 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2217 }
2218 return l;
2219#endif
2220#endif
2221}
2222
ffed7fef 2223#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2224#endif /* MYSWAP */
2225
2226/*
2227 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2228 * If these functions are defined,
2229 * the BYTEORDER is neither 0x1234 nor 0x4321.
2230 * However, this is not assumed.
2231 * -DWS
2232 */
2233
2234#define HTOV(name,type) \
2235 type \
ba106d47 2236 name (register type n) \
988174c1
LW		 2237 { \
2238 union { \
2239 type value; \
2240 char c[sizeof(type)]; \
2241 } u; \
79072805
LW		 2242 register I32 i; \
2243 register I32 s; \
988174c1
LW		 2244 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2245 u.c[i] = (n >> s) & 0xFF; \
2246 } \
2247 return u.value; \
2248 }
2249
2250#define VTOH(name,type) \
2251 type \
ba106d47 2252 name (register type n) \
988174c1
LW		 2253 { \
2254 union { \
2255 type value; \
2256 char c[sizeof(type)]; \
2257 } u; \
79072805
LW		 2258 register I32 i; \
2259 register I32 s; \
988174c1
LW		 2260 u.value = n; \
2261 n = 0; \
2262 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2263 n += (u.c[i] & 0xFF) << s; \
2264 } \
2265 return n; \
2266 }
2267
2268#if defined(HAS_HTOVS) && !defined(htovs)
2269HTOV(htovs,short)
2270#endif
2271#if defined(HAS_HTOVL) && !defined(htovl)
2272HTOV(htovl,long)
2273#endif
2274#if defined(HAS_VTOHS) && !defined(vtohs)
2275VTOH(vtohs,short)
2276#endif
2277#if defined(HAS_VTOHL) && !defined(vtohl)
2278VTOH(vtohl,long)
2279#endif
a687059c 2280
5f05dabc 2281 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2282#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2283PerlIO *
864dbfa3 2284Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2285{
2286 int p[2];
8ac85365 2287 register I32 This, that;
d8a83dd3 2288 register Pid_t pid;
79072805 2289 SV *sv;
1738f5c4 2290 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2291 I32 did_pipes = 0;
2292 int pp[2];
a687059c 2293
45bc9206 2294 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2295#ifdef OS2
2296 if (doexec) {
2297 return my_syspopen(cmd,mode);
2298 }
2299#endif
8ac85365
NIS		 2300 This = (*mode == 'w');
2301 that = !This;
3280af22 2302 if (doexec && PL_tainting) {
bbce6d69 2303 taint_env();
2304 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2305 }
c2267164
IZ		 2306 if (PerlProc_pipe(p) < 0)
2307 return Nullfp;
e446cec8
IZ		 2308 if (doexec && PerlProc_pipe(pp) >= 0)
2309 did_pipes = 1;
a687059c
LW		 2310 while ((pid = (doexec?vfork():fork())) < 0) {
2311 if (errno != EAGAIN) {
6ad3d225 2312 PerlLIO_close(p[This]);
e446cec8
IZ		 2313 if (did_pipes) {
2314 PerlLIO_close(pp[0]);
2315 PerlLIO_close(pp[1]);
2316 }
a687059c 2317 if (!doexec)
cea2e8a9 2318 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2319 return Nullfp;
2320 }
2321 sleep(5);
2322 }
2323 if (pid == 0) {
79072805
LW		 2324 GV* tmpgv;
2325
30ac6d9b
GS		 2326#undef THIS
2327#undef THAT
a687059c 2328#define THIS that
8ac85365 2329#define THAT This
6ad3d225 2330 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2331 if (did_pipes) {
2332 PerlLIO_close(pp[0]);
2333#if defined(HAS_FCNTL) && defined(F_SETFD)
2334 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2335#endif
2336 }
a687059c 2337 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2338 PerlLIO_dup2(p[THIS], *mode == 'r');
2339 PerlLIO_close(p[THIS]);
a687059c 2340 }
4435c477 2341#ifndef OS2
a687059c 2342 if (doexec) {
a0d0e21e 2343#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2344 int fd;
2345
2346#ifndef NOFILE
2347#define NOFILE 20
2348#endif
6b88bc9c 2349 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2350 if (fd != pp[1])
2351 PerlLIO_close(fd);
ae986130 2352#endif
e446cec8 2353 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2354 PerlProc__exit(1);
a687059c 2355 }
4435c477 2356#endif /* defined OS2 */
de3bb511 2357 /*SUPPRESS 560*/
155aba94 2358 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2359 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2360 PL_forkprocess = 0;
2361 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2362 return Nullfp;
2363#undef THIS
2364#undef THAT
2365 }
62b28dd9 2366 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2367 PerlLIO_close(p[that]);
e446cec8
IZ		 2368 if (did_pipes)
2369 PerlLIO_close(pp[1]);
8ac85365 2370 if (p[that] < p[This]) {
6ad3d225
GS		 2371 PerlLIO_dup2(p[This], p[that]);
2372 PerlLIO_close(p[This]);
8ac85365 2373 p[This] = p[that];
62b28dd9 2374 }
3280af22 2375 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2376 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2377 SvIVX(sv) = pid;
3280af22 2378 PL_forkprocess = pid;
e446cec8
IZ		 2379 if (did_pipes && pid > 0) {
2380 int errkid;
2381 int n = 0, n1;
2382
2383 while (n < sizeof(int)) {
2384 n1 = PerlLIO_read(pp[0],
2385 (void*)(((char*)&errkid)+n),
2386 (sizeof(int)) - n);
2387 if (n1 <= 0)
2388 break;
2389 n += n1;
2390 }
2f96c702
IZ		 2391 PerlLIO_close(pp[0]);
2392 did_pipes = 0;
e446cec8
IZ		 2393 if (n) { /* Error */
2394 if (n != sizeof(int))
cea2e8a9 2395 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2396 errno = errkid; /* Propagate errno from kid */
2397 return Nullfp;
2398 }
2399 }
2400 if (did_pipes)
2401 PerlLIO_close(pp[0]);
8ac85365 2402 return PerlIO_fdopen(p[This], mode);
a687059c 2403}
7c0587c8 2404#else
55497cff 2405#if defined(atarist) || defined(DJGPP)
7c0587c8 2406FILE *popen();
760ac839 2407PerlIO *
864dbfa3 2408Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2409{
760ac839 2410 /* Needs work for PerlIO ! */
55497cff 2411 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2412 PERL_FLUSHALL_FOR_CHILD;
55497cff 2413 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2414}
2415#endif
2416
2417#endif /* !DOSISH */
a687059c 2418
748a9306 2419#ifdef DUMP_FDS
35ff7856 2420void
864dbfa3 2421Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2422{
2423 int fd;
2424 struct stat tmpstatbuf;
2425
bf49b057 2426 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2427 for (fd = 0; fd < 32; fd++) {
6ad3d225 2428 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2429 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2430 }
bf49b057 2431 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2432}
35ff7856 2433#endif /* DUMP_FDS */
ae986130 2434
fe14fcc3 2435#ifndef HAS_DUP2
fec02dd3 2436int
ba106d47 2437dup2(int oldfd, int newfd)
a687059c 2438{
a0d0e21e 2439#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2440 if (oldfd == newfd)
2441 return oldfd;
6ad3d225 2442 PerlLIO_close(newfd);
fec02dd3 2443 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2444#else
fc36a67e 2445#define DUP2_MAX_FDS 256
2446 int fdtmp[DUP2_MAX_FDS];
79072805 2447 I32 fdx = 0;
ae986130
LW		 2448 int fd;
2449
fe14fcc3 2450 if (oldfd == newfd)
fec02dd3 2451 return oldfd;
6ad3d225 2452 PerlLIO_close(newfd);
fc36a67e 2453 /* good enough for low fd's... */
6ad3d225 2454 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2455 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2456 PerlLIO_close(fd);
fc36a67e 2457 fd = -1;
2458 break;
2459 }
ae986130 2460 fdtmp[fdx++] = fd;
fc36a67e 2461 }
ae986130 2462 while (fdx > 0)
6ad3d225 2463 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2464 return fd;
62b28dd9 2465#endif
a687059c
LW		 2466}
2467#endif
2468
ff68c719 2469
2470#ifdef HAS_SIGACTION
2471
2472Sighandler_t
864dbfa3 2473Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2474{
2475 struct sigaction act, oact;
2476
2477 act.sa_handler = handler;
2478 sigemptyset(&act.sa_mask);
2479 act.sa_flags = 0;
2480#ifdef SA_RESTART
2481 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2482#endif
85264bed
CS		 2483#ifdef SA_NOCLDWAIT
2484 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2485 act.sa_flags |= SA_NOCLDWAIT;
2486#endif
ff68c719 2487 if (sigaction(signo, &act, &oact) == -1)
36477c24 2488 return SIG_ERR;
ff68c719 2489 else
36477c24 2490 return oact.sa_handler;
ff68c719 2491}
2492
2493Sighandler_t
864dbfa3 2494Perl_rsignal_state(pTHX_ int signo)
ff68c719 2495{
2496 struct sigaction oact;
2497
2498 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2499 return SIG_ERR;
2500 else
2501 return oact.sa_handler;
2502}
2503
2504int
864dbfa3 2505Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2506{
2507 struct sigaction act;
2508
2509 act.sa_handler = handler;
2510 sigemptyset(&act.sa_mask);
2511 act.sa_flags = 0;
2512#ifdef SA_RESTART
2513 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2514#endif
85264bed
CS		 2515#ifdef SA_NOCLDWAIT
2516 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2517 act.sa_flags |= SA_NOCLDWAIT;
2518#endif
ff68c719 2519 return sigaction(signo, &act, save);
2520}
2521
2522int
864dbfa3 2523Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2524{
2525 return sigaction(signo, save, (struct sigaction *)NULL);
2526}
2527
2528#else /* !HAS_SIGACTION */
2529
2530Sighandler_t
864dbfa3 2531Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2532{
6ad3d225 2533 return PerlProc_signal(signo, handler);
ff68c719 2534}
2535
2536static int sig_trapped;
2537
2538static
2539Signal_t
4e35701f 2540sig_trap(int signo)
ff68c719 2541{
2542 sig_trapped++;
2543}
2544
2545Sighandler_t
864dbfa3 2546Perl_rsignal_state(pTHX_ int signo)
ff68c719 2547{
2548 Sighandler_t oldsig;
2549
2550 sig_trapped = 0;
6ad3d225
GS		 2551 oldsig = PerlProc_signal(signo, sig_trap);
2552 PerlProc_signal(signo, oldsig);
ff68c719 2553 if (sig_trapped)
7766f137 2554 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2555 return oldsig;
2556}
2557
2558int
864dbfa3 2559Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2560{
6ad3d225 2561 *save = PerlProc_signal(signo, handler);
ff68c719 2562 return (*save == SIG_ERR) ? -1 : 0;
2563}
2564
2565int
864dbfa3 2566Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2567{
6ad3d225 2568 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2569}
2570
2571#endif /* !HAS_SIGACTION */
2572
5f05dabc 2573 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2574#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2575I32
864dbfa3 2576Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2577{
ff68c719 2578 Sigsave_t hstat, istat, qstat;
a687059c 2579 int status;
a0d0e21e 2580 SV **svp;
d8a83dd3
JH		 2581 Pid_t pid;
2582 Pid_t pid2;
03136e13
CS		 2583 bool close_failed;
2584 int saved_errno;
2585#ifdef VMS
2586 int saved_vaxc_errno;
2587#endif
22fae026
TM		 2588#ifdef WIN32
2589 int saved_win32_errno;
2590#endif
a687059c 2591
3280af22 2592 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2593 pid = SvIVX(*svp);
a0d0e21e 2594 SvREFCNT_dec(*svp);
3280af22 2595 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2596#ifdef OS2
2597 if (pid == -1) { /* Opened by popen. */
2598 return my_syspclose(ptr);
2599 }
2600#endif
03136e13
CS		 2601 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2602 saved_errno = errno;
2603#ifdef VMS
2604 saved_vaxc_errno = vaxc$errno;
2605#endif
22fae026
TM		 2606#ifdef WIN32
2607 saved_win32_errno = GetLastError();
2608#endif
03136e13 2609 }
7c0587c8 2610#ifdef UTS
6ad3d225 2611 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2612#endif
ff68c719 2613 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2614 rsignal_save(SIGINT, SIG_IGN, &istat);
2615 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2616 do {
1d3434b8
GS		 2617 pid2 = wait4pid(pid, &status, 0);
2618 } while (pid2 == -1 && errno == EINTR);
ff68c719 2619 rsignal_restore(SIGHUP, &hstat);
2620 rsignal_restore(SIGINT, &istat);
2621 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2622 if (close_failed) {
2623 SETERRNO(saved_errno, saved_vaxc_errno);
2624 return -1;
2625 }
1d3434b8 2626 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2627}
4633a7c4
LW		 2628#endif /* !DOSISH */
2629
cd39f2b6 2630#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2631I32
d8a83dd3 2632Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2633{
79072805
LW		 2634 SV *sv;
2635 SV** svp;
fc36a67e 2636 char spid[TYPE_CHARS(int)];
20188a90
LW		 2637
2638 if (!pid)
2639 return -1;
20188a90 2640 if (pid > 0) {
7b0972df 2641 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2642 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2643 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2644 *statusp = SvIVX(*svp);
3280af22 2645 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2646 return pid;
2647 }
2648 }
2649 else {
79072805 2650 HE *entry;
20188a90 2651
3280af22 2652 hv_iterinit(PL_pidstatus);
155aba94 2653 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2654 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2655 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2656 *statusp = SvIVX(sv);
7b0972df 2657 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2658 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2659 return pid;
2660 }
2661 }
79072805 2662#ifdef HAS_WAITPID
367f3c24
IZ		 2663# ifdef HAS_WAITPID_RUNTIME
2664 if (!HAS_WAITPID_RUNTIME)
2665 goto hard_way;
2666# endif
f55ee38a 2667 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2668#endif
2669#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2670 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2671#endif
2672#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2673 hard_way:
a0d0e21e
LW		 2674 {
2675 I32 result;
2676 if (flags)
cea2e8a9 2677 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2678 else {
76e3520e 2679 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2680 pidgone(result,*statusp);
2681 if (result < 0)
2682 *statusp = -1;
2683 }
2684 return result;
a687059c
LW		 2685 }
2686#endif
a687059c 2687}
2d7a9237 2688#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2689
7c0587c8 2690void
de3bb511 2691/*SUPPRESS 590*/
d8a83dd3 2692Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2693{
79072805 2694 register SV *sv;
fc36a67e 2695 char spid[TYPE_CHARS(int)];
a687059c 2696
7b0972df 2697 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2698 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2699 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2700 SvIVX(sv) = status;
20188a90 2701 return;
a687059c
LW		 2702}
2703
55497cff 2704#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2705int pclose();
ddcf38b7
IZ		 2706#ifdef HAS_FORK
2707int /* Cannot prototype with I32
2708 in os2ish.h. */
ba106d47 2709my_syspclose(PerlIO *ptr)
ddcf38b7 2710#else
79072805 2711I32
864dbfa3 2712Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2713#endif
a687059c 2714{
760ac839
LW		 2715 /* Needs work for PerlIO ! */
2716 FILE *f = PerlIO_findFILE(ptr);
2717 I32 result = pclose(f);
933fea7f
GS		 2718#if defined(DJGPP)
2719 result = (result << 8) & 0xff00;
2720#endif
760ac839
LW		 2721 PerlIO_releaseFILE(ptr,f);
2722 return result;
a687059c 2723}
7c0587c8 2724#endif
9f68db38
LW		 2725
2726void
864dbfa3 2727Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2728{
79072805 2729 register I32 todo;
08105a92 2730 register const char *frombase = from;
9f68db38
LW		 2731
2732 if (len == 1) {
08105a92 2733 register const char c = *from;
9f68db38 2734 while (count-- > 0)
5926133d 2735 *to++ = c;
9f68db38
LW		 2736 return;
2737 }
2738 while (count-- > 0) {
2739 for (todo = len; todo > 0; todo--) {
2740 *to++ = *from++;
2741 }
2742 from = frombase;
2743 }
2744}
0f85fab0 2745
463ee0b2 2746U32
65202027 2747Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2748{
2749 long along;
2750
27e2fb84 2751#if CASTFLAGS & 2
34de22dd
LW		 2752# define BIGDOUBLE 2147483648.0
2753 if (f >= BIGDOUBLE)
2754 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2755#endif
0f85fab0
LW		 2756 if (f >= 0.0)
2757 return (unsigned long)f;
2758 along = (long)f;
2759 return (unsigned long)along;
2760}
ed6116ce 2761# undef BIGDOUBLE
5d94fbed 2762
5d94fbed
AD		 2763/* Unfortunately, on some systems the cast_uv() function doesn't
2764 work with the system-supplied definition of ULONG_MAX. The
2765 comparison (f >= ULONG_MAX) always comes out true. It must be a
2766 problem with the compiler constant folding.
2767
2768 In any case, this workaround should be fine on any two's complement
2769 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2770 ccflags.
2771 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2772*/
1eb770ff 2773
2774/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2775 of LONG_(MIN/MAX).
2776 -- Kenneth Albanowski <kjahds@kjahds.com>
2777*/
2778
20cec16a 2779#ifndef MY_UV_MAX
2780# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2781#endif
2782
ed6116ce 2783I32
65202027 2784Perl_cast_i32(pTHX_ NV f)
ed6116ce 2785{
20cec16a 2786 if (f >= I32_MAX)
2787 return (I32) I32_MAX;
2788 if (f <= I32_MIN)
2789 return (I32) I32_MIN;
ed6116ce
LW		 2790 return (I32) f;
2791}
a0d0e21e
LW		 2792
2793IV
65202027 2794Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2795{
25da4f38
IZ		 2796 if (f >= IV_MAX) {
2797 UV uv;
2798
65202027 2799 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2800 return (IV) UV_MAX;
2801 uv = (UV) f;
2802 return (IV)uv;
2803 }
20cec16a 2804 if (f <= IV_MIN)
2805 return (IV) IV_MIN;
a0d0e21e
LW		 2806 return (IV) f;
2807}
5d94fbed
AD		 2808
2809UV
65202027 2810Perl_cast_uv(pTHX_ NV f)
5d94fbed 2811{
20cec16a 2812 if (f >= MY_UV_MAX)
2813 return (UV) MY_UV_MAX;
25da4f38
IZ		 2814 if (f < 0) {
2815 IV iv;
2816
2817 if (f < IV_MIN)
2818 return (UV)IV_MIN;
2819 iv = (IV) f;
2820 return (UV) iv;
2821 }
5d94fbed
AD		 2822 return (UV) f;
2823}
2824
fe14fcc3 2825#ifndef HAS_RENAME
79072805 2826I32
864dbfa3 2827Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2828{
93a17b20
LW		 2829 char *fa = strrchr(a,'/');
2830 char *fb = strrchr(b,'/');
62b28dd9
LW		 2831 struct stat tmpstatbuf1;
2832 struct stat tmpstatbuf2;
46fc3d4c 2833 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2834
2835 if (fa)
2836 fa++;
2837 else
2838 fa = a;
2839 if (fb)
2840 fb++;
2841 else
2842 fb = b;
2843 if (strNE(a,b))
2844 return FALSE;
2845 if (fa == a)
46fc3d4c 2846 sv_setpv(tmpsv, ".");
62b28dd9 2847 else
46fc3d4c 2848 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2849 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2850 return FALSE;
2851 if (fb == b)
46fc3d4c 2852 sv_setpv(tmpsv, ".");
62b28dd9 2853 else
46fc3d4c 2854 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2855 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2856 return FALSE;
2857 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2858 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2859}
fe14fcc3
LW		 2860#endif /* !HAS_RENAME */
2861
9e24b6e2 2862NV
864dbfa3 2863Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2864{
2865 register char *s = start;
9e24b6e2
JH		 2866 register NV rnv = 0.0;
2867 register UV ruv = 0;
252aa082 2868 register bool seenb = FALSE;
9e24b6e2 2869 register bool overflowed = FALSE;
252aa082
JH		 2870
2871 for (; len-- && *s; s++) {
2872 if (!(*s == '0' || *s == '1')) {
2873 if (*s == '_')
9e24b6e2 2874 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2875 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2876 /* Disallow 0bbb0b0bbb... */
2877 seenb = TRUE;
252aa082
JH		 2878 continue;
2879 }
2880 else {
2881 dTHR;
627300f0
JH		 2882 if (ckWARN(WARN_DIGIT))
2883 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2884 "Illegal binary digit '%c' ignored", *s);
2885 break;
2886 }
9e24b6e2
JH		 2887 }
2888 if (!overflowed) {
2889 register UV xuv = ruv << 1;
2890
2891 if ((xuv >> 1) != ruv) {
2892 dTHR;
2893 overflowed = TRUE;
2894 rnv = (NV) ruv;
627300f0
JH		 2895 if (ckWARN_d(WARN_OVERFLOW))
2896 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2897 "Integer overflow in binary number");
2898 } else
2899 ruv = xuv | (*s - '0');
2900 }
2901 if (overflowed) {
2902 rnv *= 2;
2903 /* If an NV has not enough bits in its mantissa to
2904 * represent an UV this summing of small low-order numbers
2905 * is a waste of time (because the NV cannot preserve
2906 * the low-order bits anyway): we could just remember when
2907 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2908 * right amount. */
9e24b6e2 2909 rnv += (*s - '0');
f248d071 2910 }
4f19785b 2911 }
9e24b6e2
JH		 2912 if (!overflowed)
2913 rnv = (NV) ruv;
893fe2c2 2914 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2915#if UVSIZE > 4
893fe2c2
JH		 2916 || (!overflowed && ruv > 0xffffffff )
2917#endif
2918 ) {
252aa082 2919 dTHR;
627300f0
JH		 2920 if (ckWARN(WARN_PORTABLE))
2921 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2922 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2923 }
2924 *retlen = s - start;
9e24b6e2 2925 return rnv;
4f19785b 2926}
9e24b6e2
JH		 2927
2928NV
864dbfa3 2929Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2930{
2931 register char *s = start;
9e24b6e2
JH		 2932 register NV rnv = 0.0;
2933 register UV ruv = 0;
2934 register bool overflowed = FALSE;
252aa082
JH		 2935
2936 for (; len-- && *s; s++) {
2937 if (!(*s >= '0' && *s <= '7')) {
2938 if (*s == '_')
9e24b6e2 2939 continue; /* Note: does not check for __ and the like. */
252aa082 2940 else {
f84f607d
JH		 2941 /* Allow \octal to work the DWIM way (that is, stop scanning
2942 * as soon as non-octal characters are seen, complain only iff
2943 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2944 if (*s == '8' || *s == '9') {
2945 dTHR;
627300f0
JH		 2946 if (ckWARN(WARN_DIGIT))
2947 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2948 "Illegal octal digit '%c' ignored", *s);
2949 }
2950 break;
2951 }
55497cff 2952 }
9e24b6e2 2953 if (!overflowed) {
893fe2c2 2954 register UV xuv = ruv << 3;
9e24b6e2
JH		 2955
2956 if ((xuv >> 3) != ruv) {
2957 dTHR;
2958 overflowed = TRUE;
2959 rnv = (NV) ruv;
627300f0
JH		 2960 if (ckWARN_d(WARN_OVERFLOW))
2961 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2962 "Integer overflow in octal number");
2963 } else
2964 ruv = xuv | (*s - '0');
2965 }
2966 if (overflowed) {
2967 rnv *= 8.0;
2968 /* If an NV has not enough bits in its mantissa to
2969 * represent an UV this summing of small low-order numbers
2970 * is a waste of time (because the NV cannot preserve
2971 * the low-order bits anyway): we could just remember when
2972 * did we overflow and in the end just multiply rnv by the
2973 * right amount of 8-tuples. */
2974 rnv += (NV)(*s - '0');
2975 }
fe14fcc3 2976 }
9e24b6e2
JH		 2977 if (!overflowed)
2978 rnv = (NV) ruv;
893fe2c2 2979 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2980#if UVSIZE > 4
893fe2c2
JH		 2981 || (!overflowed && ruv > 0xffffffff )
2982#endif
2983 ) {
d008e5eb 2984 dTHR;
627300f0
JH		 2985 if (ckWARN(WARN_PORTABLE))
2986 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2987 "Octal number > 037777777777 non-portable");
d008e5eb 2988 }
fe14fcc3 2989 *retlen = s - start;
9e24b6e2 2990 return rnv;
fe14fcc3
LW		 2991}
2992
9e24b6e2 2993NV
864dbfa3 2994Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2995{
2996 register char *s = start;
9e24b6e2
JH		 2997 register NV rnv = 0.0;
2998 register UV ruv = 0;
252aa082 2999 register bool seenx = FALSE;
9e24b6e2 3000 register bool overflowed = FALSE;
9e24b6e2 3001 char *hexdigit;
fe14fcc3 3002
9e24b6e2
JH		 3003 for (; len-- && *s; s++) {
3004 hexdigit = strchr((char *) PL_hexdigit, *s);
3005 if (!hexdigit) {
3006 if (*s == '_')
3007 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 3008 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3009 /* Disallow 0xxx0x0xxx... */
3010 seenx = TRUE;
252aa082
JH		 3011 continue;
3012 }
a0ed51b3 3013 else {
d008e5eb 3014 dTHR;
627300f0
JH		 3015 if (ckWARN(WARN_DIGIT))
3016 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3017 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3018 break;
3019 }
3020 }
9e24b6e2
JH		 3021 if (!overflowed) {
3022 register UV xuv = ruv << 4;
3023
3024 if ((xuv >> 4) != ruv) {
3025 dTHR;
3026 overflowed = TRUE;
3027 rnv = (NV) ruv;
627300f0
JH		 3028 if (ckWARN_d(WARN_OVERFLOW))
3029 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 3030 "Integer overflow in hexadecimal number");
3031 } else
3032 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3033 }
3034 if (overflowed) {
3035 rnv *= 16.0;
3036 /* If an NV has not enough bits in its mantissa to
3037 * represent an UV this summing of small low-order numbers
3038 * is a waste of time (because the NV cannot preserve
3039 * the low-order bits anyway): we could just remember when
3040 * did we overflow and in the end just multiply rnv by the
3041 * right amount of 16-tuples. */
3042 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3043 }
6ff81951 3044 }
9e24b6e2
JH		 3045 if (!overflowed)
3046 rnv = (NV) ruv;
893fe2c2 3047 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3048#if UVSIZE > 4
893fe2c2
JH		 3049 || (!overflowed && ruv > 0xffffffff )
3050#endif
3051 ) {
252aa082 3052 dTHR;
627300f0
JH		 3053 if (ckWARN(WARN_PORTABLE))
3054 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3055 "Hexadecimal number > 0xffffffff non-portable");
3056 }
fe14fcc3 3057 *retlen = s - start;
9e24b6e2 3058 return rnv;
fe14fcc3 3059}
760ac839 3060
491527d0 3061char*
864dbfa3 3062Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3063{
3064 dTHR;
3065 char *xfound = Nullch;
3066 char *xfailed = Nullch;
0f31cffe 3067 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3068 register char *s;
3069 I32 len;
3070 int retval;
3071#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3072# define SEARCH_EXTS ".bat", ".cmd", NULL
3073# define MAX_EXT_LEN 4
3074#endif
3075#ifdef OS2
3076# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3077# define MAX_EXT_LEN 4
3078#endif
3079#ifdef VMS
3080# define SEARCH_EXTS ".pl", ".com", NULL
3081# define MAX_EXT_LEN 4
3082#endif
3083 /* additional extensions to try in each dir if scriptname not found */
3084#ifdef SEARCH_EXTS
3085 char *exts[] = { SEARCH_EXTS };
3086 char **ext = search_ext ? search_ext : exts;
3087 int extidx = 0, i = 0;
3088 char *curext = Nullch;
3089#else
3090# define MAX_EXT_LEN 0
3091#endif
3092
3093 /*
3094 * If dosearch is true and if scriptname does not contain path
3095 * delimiters, search the PATH for scriptname.
3096 *
3097 * If SEARCH_EXTS is also defined, will look for each
3098 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3099 * while searching the PATH.
3100 *
3101 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3102 * proceeds as follows:
3103 * If DOSISH or VMSISH:
3104 * + look for ./scriptname{,.foo,.bar}
3105 * + search the PATH for scriptname{,.foo,.bar}
3106 *
3107 * If !DOSISH:
3108 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3109 * this will not look in '.' if it's not in the PATH)
3110 */
84486fc6 3111 tmpbuf[0] = '\0';
491527d0
GS		 3112
3113#ifdef VMS
3114# ifdef ALWAYS_DEFTYPES
3115 len = strlen(scriptname);
3116 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3117 int hasdir, idx = 0, deftypes = 1;
3118 bool seen_dot = 1;
3119
3120 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3121# else
3122 if (dosearch) {
3123 int hasdir, idx = 0, deftypes = 1;
3124 bool seen_dot = 1;
3125
3126 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3127# endif
3128 /* The first time through, just add SEARCH_EXTS to whatever we
3129 * already have, so we can check for default file types. */
3130 while (deftypes ||
84486fc6 3131 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3132 {
3133 if (deftypes) {
3134 deftypes = 0;
84486fc6 3135 *tmpbuf = '\0';
491527d0 3136 }
84486fc6
GS		 3137 if ((strlen(tmpbuf) + strlen(scriptname)
3138 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3139 continue; /* don't search dir with too-long name */
84486fc6 3140 strcat(tmpbuf, scriptname);
491527d0
GS		 3141#else /* !VMS */
3142
3143#ifdef DOSISH
3144 if (strEQ(scriptname, "-"))
3145 dosearch = 0;
3146 if (dosearch) { /* Look in '.' first. */
3147 char *cur = scriptname;
3148#ifdef SEARCH_EXTS
3149 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3150 while (ext[i])
3151 if (strEQ(ext[i++],curext)) {
3152 extidx = -1; /* already has an ext */
3153 break;
3154 }
3155 do {
3156#endif
3157 DEBUG_p(PerlIO_printf(Perl_debug_log,
3158 "Looking for %s\n",cur));
017f25f1
IZ		 3159 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3160 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3161 dosearch = 0;
3162 scriptname = cur;
3163#ifdef SEARCH_EXTS
3164 break;
3165#endif
3166 }
3167#ifdef SEARCH_EXTS
3168 if (cur == scriptname) {
3169 len = strlen(scriptname);
84486fc6 3170 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3171 break;
84486fc6 3172 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3173 }
3174 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3175 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3176#endif
3177 }
3178#endif
3179
cd39f2b6
JH		 3180#ifdef MACOS_TRADITIONAL
3181 if (dosearch && !strchr(scriptname, ':') &&
3182 (s = PerlEnv_getenv("Commands")))
3183#else
491527d0
GS		 3184 if (dosearch && !strchr(scriptname, '/')
3185#ifdef DOSISH
3186 && !strchr(scriptname, '\\')
3187#endif
cd39f2b6
JH		 3188 && (s = PerlEnv_getenv("PATH")))
3189#endif
3190 {
491527d0
GS		 3191 bool seen_dot = 0;
3192
3280af22
NIS		 3193 PL_bufend = s + strlen(s);
3194 while (s < PL_bufend) {
cd39f2b6
JH		 3195#ifdef MACOS_TRADITIONAL
3196 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3197 ',',
3198 &len);
3199#else
491527d0
GS		 3200#if defined(atarist) || defined(DOSISH)
3201 for (len = 0; *s
3202# ifdef atarist
3203 && *s != ','
3204# endif
3205 && *s != ';'; len++, s++) {
84486fc6
GS		 3206 if (len < sizeof tmpbuf)
3207 tmpbuf[len] = *s;
491527d0 3208 }
84486fc6
GS		 3209 if (len < sizeof tmpbuf)
3210 tmpbuf[len] = '\0';
491527d0 3211#else /* ! (atarist || DOSISH) */
3280af22 3212 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3213 ':',
3214 &len);
3215#endif /* ! (atarist || DOSISH) */
cd39f2b6 3216#endif /* MACOS_TRADITIONAL */
3280af22 3217 if (s < PL_bufend)
491527d0 3218 s++;
84486fc6 3219 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3220 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3221#ifdef MACOS_TRADITIONAL
3222 if (len && tmpbuf[len - 1] != ':')
3223 tmpbuf[len++] = ':';
3224#else
491527d0 3225 if (len
61ae2fbf 3226#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3227 && tmpbuf[len - 1] != '/'
3228 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3229#endif
3230 )
84486fc6
GS		 3231 tmpbuf[len++] = '/';
3232 if (len == 2 && tmpbuf[0] == '.')
491527d0 3233 seen_dot = 1;
cd39f2b6 3234#endif
84486fc6 3235 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3236#endif /* !VMS */
3237
3238#ifdef SEARCH_EXTS
84486fc6 3239 len = strlen(tmpbuf);
491527d0
GS		 3240 if (extidx > 0) /* reset after previous loop */
3241 extidx = 0;
3242 do {
3243#endif
84486fc6 3244 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3245 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3246 if (S_ISDIR(PL_statbuf.st_mode)) {
3247 retval = -1;
3248 }
491527d0
GS		 3249#ifdef SEARCH_EXTS
3250 } while ( retval < 0 /* not there */
3251 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3252 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3253 );
3254#endif
3255 if (retval < 0)
3256 continue;
3280af22
NIS		 3257 if (S_ISREG(PL_statbuf.st_mode)
3258 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3259#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3260 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3261#endif
3262 )
3263 {
84486fc6 3264 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3265 break;
3266 }
3267 if (!xfailed)
84486fc6 3268 xfailed = savepv(tmpbuf);
491527d0
GS		 3269 }
3270#ifndef DOSISH
017f25f1
IZ		 3271 if (!xfound && !seen_dot && !xfailed &&
3272 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3273 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3274#endif
3275 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3276 if (!xfound) {
3277 if (flags & 1) { /* do or die? */
cea2e8a9 3278 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3279 (xfailed ? "execute" : "find"),
3280 (xfailed ? xfailed : scriptname),
3281 (xfailed ? "" : " on PATH"),
3282 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3283 }
3284 scriptname = Nullch;
3285 }
491527d0
GS		 3286 if (xfailed)
3287 Safefree(xfailed);
3288 scriptname = xfound;
3289 }
9ccb31f9 3290 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3291}
3292
ba869deb
GS		 3293#ifndef PERL_GET_CONTEXT_DEFINED
3294
3295void *
3296Perl_get_context(void)
3297{
3298#if defined(USE_THREADS) || defined(USE_ITHREADS)
3299# ifdef OLD_PTHREADS_API
3300 pthread_addr_t t;
3301 if (pthread_getspecific(PL_thr_key, &t))
3302 Perl_croak_nocontext("panic: pthread_getspecific");
3303 return (void*)t;
3304# else
c44d3fdb
GS		 3305# ifdef I_MACH_CTHREADS
3306 return (void*)cthread_data(cthread_self());
3307# else
ba869deb
GS		 3308 return (void*)pthread_getspecific(PL_thr_key);
3309# endif
c44d3fdb 3310# endif
ba869deb
GS		 3311#else
3312 return (void*)NULL;
3313#endif
3314}
3315
3316void
3317Perl_set_context(void *t)
3318{
3319#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3320# ifdef I_MACH_CTHREADS
3321 cthread_set_data(cthread_self(), t);
3322# else
ba869deb
GS		 3323 if (pthread_setspecific(PL_thr_key, t))
3324 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3325# endif
ba869deb
GS		 3326#endif
3327}
3328
3329#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3330
11343788 3331#ifdef USE_THREADS
ba869deb 3332
12ca11f6
MB		 3333#ifdef FAKE_THREADS
3334/* Very simplistic scheduler for now */
3335void
3336schedule(void)
3337{
c7848ba1 3338 thr = thr->i.next_run;
12ca11f6
MB		 3339}
3340
3341void
864dbfa3 3342Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3343{
3344 *cp = 0;
3345}
3346
3347void
864dbfa3 3348Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3349{
51dd5992 3350 perl_os_thread t;
12ca11f6
MB		 3351 perl_cond cond = *cp;
3352
3353 if (!cond)
3354 return;
3355 t = cond->thread;
3356 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3357 t->i.next_run = thr->i.next_run;
3358 thr->i.next_run->i.prev_run = t;
3359 t->i.prev_run = thr;
3360 thr->i.next_run = t;
3361 thr->i.wait_queue = 0;
12ca11f6
MB		 3362 /* Remove from the wait queue */
3363 *cp = cond->next;
3364 Safefree(cond);
3365}
3366
3367void
864dbfa3 3368Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3369{
51dd5992 3370 perl_os_thread t;
12ca11f6
MB		 3371 perl_cond cond, cond_next;
3372
3373 for (cond = *cp; cond; cond = cond_next) {
3374 t = cond->thread;
3375 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3376 t->i.next_run = thr->i.next_run;
3377 thr->i.next_run->i.prev_run = t;
3378 t->i.prev_run = thr;
3379 thr->i.next_run = t;
3380 thr->i.wait_queue = 0;
12ca11f6
MB		 3381 /* Remove from the wait queue */
3382 cond_next = cond->next;
3383 Safefree(cond);
3384 }
3385 *cp = 0;
3386}
3387
3388void
864dbfa3 3389Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3390{
3391 perl_cond cond;
3392
c7848ba1 3393 if (thr->i.next_run == thr)
cea2e8a9 3394 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3395
0f15f207 3396 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3397 cond->thread = thr;
3398 cond->next = *cp;
3399 *cp = cond;
c7848ba1 3400 thr->i.wait_queue = cond;
12ca11f6 3401 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3402 thr->i.next_run->i.prev_run = thr->i.prev_run;
3403 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3404}
3405#endif /* FAKE_THREADS */
3406
f93b4edd 3407MAGIC *
864dbfa3 3408Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3409{
3410 MAGIC *mg;
3411
3412 SvUPGRADE(sv, SVt_PVMG);
3413 mg = mg_find(sv, 'm');
3414 if (!mg) {
3415 condpair_t *cp;
3416
3417 New(53, cp, 1, condpair_t);
3418 MUTEX_INIT(&cp->mutex);
3419 COND_INIT(&cp->owner_cond);
3420 COND_INIT(&cp->cond);
3421 cp->owner = 0;
1feb2720 3422 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3423 mg = mg_find(sv, 'm');
3424 if (mg) {
3425 /* someone else beat us to initialising it */
1feb2720 3426 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3427 MUTEX_DESTROY(&cp->mutex);
3428 COND_DESTROY(&cp->owner_cond);
3429 COND_DESTROY(&cp->cond);
3430 Safefree(cp);
3431 }
3432 else {
3433 sv_magic(sv, Nullsv, 'm', 0, 0);
3434 mg = SvMAGIC(sv);
3435 mg->mg_ptr = (char *)cp;
565764a8 3436 mg->mg_len = sizeof(cp);
1feb2720 3437 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3438 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3439 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3440 }
3441 }
3442 return mg;
3443}
a863c7d1
MB		 3444
3445/*
199100c8
MB		 3446 * Make a new perl thread structure using t as a prototype. Some of the
3447 * fields for the new thread are copied from the prototype thread, t,
3448 * so t should not be running in perl at the time this function is
3449 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3450 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3451 */
52e1cb5e 3452struct perl_thread *
864dbfa3 3453Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3454{
c5be433b 3455#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3456 struct perl_thread *thr;
cea2e8a9 3457#endif
a863c7d1 3458 SV *sv;
199100c8
MB		 3459 SV **svp;
3460 I32 i;
3461
79cb57f6 3462 sv = newSVpvn("", 0);
52e1cb5e
JH		 3463 SvGROW(sv, sizeof(struct perl_thread) + 1);
3464 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3465 thr = (Thread) SvPVX(sv);
949ced2d 3466#ifdef DEBUGGING
52e1cb5e 3467 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3468 PL_markstack = 0;
3469 PL_scopestack = 0;
3470 PL_savestack = 0;
3471 PL_retstack = 0;
3472 PL_dirty = 0;
3473 PL_localizing = 0;
949ced2d
GS		 3474 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3475#else
3476 Zero(thr, 1, struct perl_thread);
3477#endif
199100c8
MB		 3478
3479 thr->oursv = sv;
cea2e8a9 3480 init_stacks();
a863c7d1 3481
533c011a 3482 PL_curcop = &PL_compiling;
c5be433b 3483 thr->interp = t->interp;
199100c8 3484 thr->cvcache = newHV();
54b9620d 3485 thr->threadsv = newAV();
a863c7d1 3486 thr->specific = newAV();
79cb57f6 3487 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3488 thr->flags = THRf_R_JOINABLE;
3489 MUTEX_INIT(&thr->mutex);
199100c8 3490
5c831c24 3491 JMPENV_BOOTSTRAP;
533c011a 3492
faef0170 3493 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3494 PL_restartop = 0;
3495
b099ddc0 3496 PL_statname = NEWSV(66,0);
5a844595 3497 PL_errors = newSVpvn("", 0);
b099ddc0 3498 PL_maxscream = -1;
0b94c7bb
GS		 3499 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3500 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3501 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3502 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3503 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3504 PL_regindent = 0;
3505 PL_reginterp_cnt = 0;
3506 PL_lastscream = Nullsv;
3507 PL_screamfirst = 0;
3508 PL_screamnext = 0;
3509 PL_reg_start_tmp = 0;
3510 PL_reg_start_tmpl = 0;
14ed4b74 3511 PL_reg_poscache = Nullch;
b099ddc0
GS		 3512
3513 /* parent thread's data needs to be locked while we make copy */
3514 MUTEX_LOCK(&t->mutex);
3515
14dd3ad8 3516#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3517 PL_protect = t->Tprotect;
14dd3ad8 3518#endif
312caa8e 3519
b099ddc0
GS		 3520 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3521 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3522 PL_curstash = t->Tcurstash; /* always be set to main? */
3523
6b88bc9c 3524 PL_tainted = t->Ttainted;
84fee439
NIS		 3525 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3526 PL_nrs = newSVsv(t->Tnrs);
3527 PL_rs = SvREFCNT_inc(PL_nrs);
3528 PL_last_in_gv = Nullgv;
3529 PL_ofslen = t->Tofslen;
3530 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3531 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3532 PL_chopset = t->Tchopset;
84fee439
NIS		 3533 PL_bodytarget = newSVsv(t->Tbodytarget);
3534 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3535 if (t->Tformtarget == t->Ttoptarget)
3536 PL_formtarget = PL_toptarget;
3537 else
3538 PL_formtarget = PL_bodytarget;
533c011a 3539
54b9620d
MB		 3540 /* Initialise all per-thread SVs that the template thread used */
3541 svp = AvARRAY(t->threadsv);
93965878 3542 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3543 if (*svp && *svp != &PL_sv_undef) {
199100c8 3544 SV *sv = newSVsv(*svp);
54b9620d 3545 av_store(thr->threadsv, i, sv);
533c011a 3546 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3547 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3548 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3549 (IV)i, t, thr));
199100c8
MB		 3550 }
3551 }
940cb80d 3552 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3553
533c011a
NIS		 3554 MUTEX_LOCK(&PL_threads_mutex);
3555 PL_nthreads++;
3556 thr->tid = ++PL_threadnum;
199100c8
MB		 3557 thr->next = t->next;
3558 thr->prev = t;
3559 t->next = thr;
3560 thr->next->prev = thr;
533c011a 3561 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3562
b099ddc0
GS		 3563 /* done copying parent's state */
3564 MUTEX_UNLOCK(&t->mutex);
3565
a863c7d1 3566#ifdef HAVE_THREAD_INTERN
4f63d024 3567 Perl_init_thread_intern(thr);
a863c7d1 3568#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3569 return thr;
3570}
11343788 3571#endif /* USE_THREADS */
760ac839
LW		 3572
3573#ifdef HUGE_VAL
3574/*
3575 * This hack is to force load of "huge" support from libm.a
3576 * So it is in perl for (say) POSIX to use.
3577 * Needed for SunOS with Sun's 'acc' for example.
3578 */
65202027 3579NV
8ac85365 3580Perl_huge(void)
760ac839
LW		 3581{
3582 return HUGE_VAL;
3583}
3584#endif
4e35701f 3585
22239a37
NIS		 3586#ifdef PERL_GLOBAL_STRUCT
3587struct perl_vars *
864dbfa3 3588Perl_GetVars(pTHX)
22239a37 3589{
533c011a 3590 return &PL_Vars;
22239a37 3591}
31fb1209
NIS		 3592#endif
3593
3594char **
864dbfa3 3595Perl_get_op_names(pTHX)
31fb1209 3596{
22c35a8c 3597 return PL_op_name;
31fb1209
NIS		 3598}
3599
3600char **
864dbfa3 3601Perl_get_op_descs(pTHX)
31fb1209 3602{
22c35a8c 3603 return PL_op_desc;
31fb1209 3604}
9e6b2b00
GS		 3605
3606char *
864dbfa3 3607Perl_get_no_modify(pTHX)
9e6b2b00 3608{
22c35a8c 3609 return (char*)PL_no_modify;
9e6b2b00
GS		 3610}
3611
3612U32 *
864dbfa3 3613Perl_get_opargs(pTHX)
9e6b2b00 3614{
22c35a8c 3615 return PL_opargs;
9e6b2b00 3616}
51aa15f3 3617
0cb96387
GS		 3618PPADDR_t*
3619Perl_get_ppaddr(pTHX)
3620{
3621 return &PL_ppaddr;
3622}
3623
a6c40364
GS		 3624#ifndef HAS_GETENV_LEN
3625char *
864dbfa3 3626Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3627{
3628 char *env_trans = PerlEnv_getenv(env_elem);
3629 if (env_trans)
3630 *len = strlen(env_trans);
3631 return env_trans;
f675dbe5
CB		 3632}
3633#endif
3634
dc9e4912
GS		 3635
3636MGVTBL*
864dbfa3 3637Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3638{
3639 MGVTBL* result = Null(MGVTBL*);
3640
3641 switch(vtbl_id) {
3642 case want_vtbl_sv:
3643 result = &PL_vtbl_sv;
3644 break;
3645 case want_vtbl_env:
3646 result = &PL_vtbl_env;
3647 break;
3648 case want_vtbl_envelem:
3649 result = &PL_vtbl_envelem;
3650 break;
3651 case want_vtbl_sig:
3652 result = &PL_vtbl_sig;
3653 break;
3654 case want_vtbl_sigelem:
3655 result = &PL_vtbl_sigelem;
3656 break;
3657 case want_vtbl_pack:
3658 result = &PL_vtbl_pack;
3659 break;
3660 case want_vtbl_packelem:
3661 result = &PL_vtbl_packelem;
3662 break;
3663 case want_vtbl_dbline:
3664 result = &PL_vtbl_dbline;
3665 break;
3666 case want_vtbl_isa:
3667 result = &PL_vtbl_isa;
3668 break;
3669 case want_vtbl_isaelem:
3670 result = &PL_vtbl_isaelem;
3671 break;
3672 case want_vtbl_arylen:
3673 result = &PL_vtbl_arylen;
3674 break;
3675 case want_vtbl_glob:
3676 result = &PL_vtbl_glob;
3677 break;
3678 case want_vtbl_mglob:
3679 result = &PL_vtbl_mglob;
3680 break;
3681 case want_vtbl_nkeys:
3682 result = &PL_vtbl_nkeys;
3683 break;
3684 case want_vtbl_taint:
3685 result = &PL_vtbl_taint;
3686 break;
3687 case want_vtbl_substr:
3688 result = &PL_vtbl_substr;
3689 break;
3690 case want_vtbl_vec:
3691 result = &PL_vtbl_vec;
3692 break;
3693 case want_vtbl_pos:
3694 result = &PL_vtbl_pos;
3695 break;
3696 case want_vtbl_bm:
3697 result = &PL_vtbl_bm;
3698 break;
3699 case want_vtbl_fm:
3700 result = &PL_vtbl_fm;
3701 break;
3702 case want_vtbl_uvar:
3703 result = &PL_vtbl_uvar;
3704 break;
3705#ifdef USE_THREADS
3706 case want_vtbl_mutex:
3707 result = &PL_vtbl_mutex;
3708 break;
3709#endif
3710 case want_vtbl_defelem:
3711 result = &PL_vtbl_defelem;
3712 break;
3713 case want_vtbl_regexp:
3714 result = &PL_vtbl_regexp;
3715 break;
3716 case want_vtbl_regdata:
3717 result = &PL_vtbl_regdata;
3718 break;
3719 case want_vtbl_regdatum:
3720 result = &PL_vtbl_regdatum;
3721 break;
3c90161d 3722#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3723 case want_vtbl_collxfrm:
3724 result = &PL_vtbl_collxfrm;
3725 break;
3c90161d 3726#endif
dc9e4912
GS		 3727 case want_vtbl_amagic:
3728 result = &PL_vtbl_amagic;
3729 break;
3730 case want_vtbl_amagicelem:
3731 result = &PL_vtbl_amagicelem;
3732 break;
810b8aa5
GS		 3733 case want_vtbl_backref:
3734 result = &PL_vtbl_backref;
3735 break;
dc9e4912
GS		 3736 }
3737 return result;
3738}
3739
767df6a1 3740I32
864dbfa3 3741Perl_my_fflush_all(pTHX)
767df6a1
JH		 3742{
3743#ifdef FFLUSH_NULL
ce720889 3744 return PerlIO_flush(NULL);
767df6a1
JH		 3745#else
3746 long open_max = -1;
ed39a0f2 3747# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3748# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3749 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3750# else
767df6a1
JH		 3751# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3752 open_max = sysconf(_SC_OPEN_MAX);
3753# else
3754# ifdef FOPEN_MAX
d2201af2 3755 open_max = FOPEN_MAX;
767df6a1
JH		 3756# else
3757# ifdef OPEN_MAX
d2201af2 3758 open_max = OPEN_MAX;
767df6a1
JH		 3759# else
3760# ifdef _NFILE
d2201af2 3761 open_max = _NFILE;
767df6a1
JH		 3762# endif
3763# endif
3764# endif
3765# endif
d2201af2 3766# endif
767df6a1
JH		 3767 if (open_max > 0) {
3768 long i;
3769 for (i = 0; i < open_max; i++)
d2201af2
AD		 3770 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3771 STDIO_STREAM_ARRAY[i]._file < open_max &&
3772 STDIO_STREAM_ARRAY[i]._flag)
3773 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3774 return 0;
3775 }
3776# endif
3777 SETERRNO(EBADF,RMS$_IFI);
3778 return EOF;
3779#endif
3780}
097ee67d 3781
65202027 3782NV
69282e91
GS		 3783Perl_my_atof(pTHX_ const char* s)
3784{
097ee67d 3785#ifdef USE_LOCALE_NUMERIC
d43ce814 3786 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3787 NV x, y;
097ee67d 3788
65202027 3789 x = Perl_atof(s);
097ee67d 3790 SET_NUMERIC_STANDARD();
65202027 3791 y = Perl_atof(s);
097ee67d
JH		 3792 SET_NUMERIC_LOCAL();
3793 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3794 return y;
3795 return x;
65202027
DS		 3796 }
3797 else
3798 return Perl_atof(s);
097ee67d 3799#else
65202027 3800 return Perl_atof(s);
097ee67d
JH		 3801#endif
3802}
69282e91
GS		 3803
3804void
3805Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3806{
3807 SV *sv;
3808 char *name;
3809
3810 assert(gv);
3811
3812 sv = sv_newmortal();
3813 gv_efullname3(sv, gv, Nullch);
3814 name = SvPVX(sv);
3815
3816 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3817
3818 if (io && IoDIRP(io))
3819 Perl_warner(aTHX_ WARN_CLOSED,
3820 "(Are you trying to call %s() on dirhandle %s?)\n",
3821 func, name);
3822}
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