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Tweak NV_PRESERVES_UV*, vms/subconfigure.com left untouched.
[perl5.git] / util.c
CommitLineData
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;
3a1f2dc9 1518 save_re_context();
79cb57f6 1519 if (message) {
06bf62c7 1520 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1521 SvREADONLY_on(msg);
1522 SAVEFREESV(msg);
1523 }
1524 else {
1525 msg = ERRSV;
1526 }
1738f5c4 1527
e788e7d3 1528 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1529 PUSHMARK(SP);
1738f5c4
CS		 1530 XPUSHs(msg);
1531 PUTBACK;
0cdb2077 1532 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1533 POPSTACK;
774d564b 1534 LEAVE;
1738f5c4 1535 }
36477c24 1536 }
1537
06bf62c7 1538 PL_restartop = die_where(message, msglen);
bf49b057 1539 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1540 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1541 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1542 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1543 JMPENV_JUMP(3);
3280af22 1544 return PL_restartop;
36477c24 1545}
1546
c5be433b 1547#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1548OP *
1549Perl_die_nocontext(const char* pat, ...)
a687059c 1550{
cea2e8a9
GS		 1551 dTHX;
1552 OP *o;
a687059c 1553 va_list args;
cea2e8a9 1554 va_start(args, pat);
c5be433b 1555 o = vdie(pat, &args);
cea2e8a9
GS		 1556 va_end(args);
1557 return o;
1558}
c5be433b 1559#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1560
1561OP *
1562Perl_die(pTHX_ const char* pat, ...)
1563{
1564 OP *o;
1565 va_list args;
1566 va_start(args, pat);
c5be433b 1567 o = vdie(pat, &args);
cea2e8a9
GS		 1568 va_end(args);
1569 return o;
1570}
1571
c5be433b
GS		 1572void
1573Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1574{
1575 dTHR;
de3bb511 1576 char *message;
748a9306
LW		 1577 HV *stash;
1578 GV *gv;
1579 CV *cv;
06bf62c7
GS		 1580 SV *msv;
1581 STRLEN msglen;
a687059c 1582
9983fa3c
GS		 1583 if (pat) {
1584 msv = vmess(pat, args);
1585 if (PL_errors && SvCUR(PL_errors)) {
1586 sv_catsv(PL_errors, msv);
1587 message = SvPV(PL_errors, msglen);
1588 SvCUR_set(PL_errors, 0);
1589 }
1590 else
1591 message = SvPV(msv,msglen);
1592 }
1593 else {
1594 message = Nullch;
1595 msglen = 0;
5a844595 1596 }
5a844595 1597
b900a521
JH		 1598 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1599 PTR2UV(thr), message));
5a844595 1600
3280af22 1601 if (PL_diehook) {
cea2e8a9 1602 /* sv_2cv might call Perl_croak() */
3280af22 1603 SV *olddiehook = PL_diehook;
1738f5c4 1604 ENTER;
3280af22
NIS		 1605 SAVESPTR(PL_diehook);
1606 PL_diehook = Nullsv;
20cec16a 1607 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1608 LEAVE;
1609 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1610 dSP;
774d564b 1611 SV *msg;
1612
1613 ENTER;
3a1f2dc9 1614 save_re_context();
9983fa3c
GS		 1615 if (message) {
1616 msg = newSVpvn(message, msglen);
1617 SvREADONLY_on(msg);
1618 SAVEFREESV(msg);
1619 }
1620 else {
1621 msg = ERRSV;
1622 }
20cec16a 1623
e788e7d3 1624 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1625 PUSHMARK(SP);
1738f5c4 1626 XPUSHs(msg);
20cec16a 1627 PUTBACK;
864dbfa3 1628 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1629 POPSTACK;
774d564b 1630 LEAVE;
20cec16a 1631 }
748a9306 1632 }
3280af22 1633 if (PL_in_eval) {
06bf62c7 1634 PL_restartop = die_where(message, msglen);
6224f72b 1635 JMPENV_JUMP(3);
a0d0e21e 1636 }
d175a3f0
GS		 1637 {
1638#ifdef USE_SFIO
1639 /* SFIO can really mess with your errno */
1640 int e = errno;
1641#endif
bf49b057
GS		 1642 PerlIO *serr = Perl_error_log;
1643
1644 PerlIO_write(serr, message, msglen);
1645 (void)PerlIO_flush(serr);
d175a3f0
GS		 1646#ifdef USE_SFIO
1647 errno = e;
1648#endif
1649 }
f86702cc 1650 my_failure_exit();
a687059c
LW		 1651}
1652
c5be433b 1653#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1654void
cea2e8a9 1655Perl_croak_nocontext(const char *pat, ...)
a687059c 1656{
cea2e8a9 1657 dTHX;
a687059c 1658 va_list args;
cea2e8a9 1659 va_start(args, pat);
c5be433b 1660 vcroak(pat, &args);
cea2e8a9
GS		 1661 /* NOTREACHED */
1662 va_end(args);
1663}
1664#endif /* PERL_IMPLICIT_CONTEXT */
1665
954c1994
GS		 1666/*
1667=for apidoc croak
1668
9983fa3c
GS		 1669This is the XSUB-writer's interface to Perl's C<die> function.
1670Normally use this function the same way you use the C C<printf>
1671function. See C<warn>.
1672
1673If you want to throw an exception object, assign the object to
1674C<$@> and then pass C<Nullch> to croak():
1675
1676 errsv = get_sv("@", TRUE);
1677 sv_setsv(errsv, exception_object);
1678 croak(Nullch);
954c1994
GS		 1679
1680=cut
1681*/
1682
cea2e8a9
GS		 1683void
1684Perl_croak(pTHX_ const char *pat, ...)
1685{
1686 va_list args;
1687 va_start(args, pat);
c5be433b 1688 vcroak(pat, &args);
cea2e8a9
GS		 1689 /* NOTREACHED */
1690 va_end(args);
1691}
1692
c5be433b
GS		 1693void
1694Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1695{
de3bb511 1696 char *message;
748a9306
LW		 1697 HV *stash;
1698 GV *gv;
1699 CV *cv;
06bf62c7
GS		 1700 SV *msv;
1701 STRLEN msglen;
a687059c 1702
5a844595 1703 msv = vmess(pat, args);
06bf62c7 1704 message = SvPV(msv, msglen);
a687059c 1705
3280af22 1706 if (PL_warnhook) {
cea2e8a9 1707 /* sv_2cv might call Perl_warn() */
11343788 1708 dTHR;
3280af22 1709 SV *oldwarnhook = PL_warnhook;
1738f5c4 1710 ENTER;
3280af22
NIS		 1711 SAVESPTR(PL_warnhook);
1712 PL_warnhook = Nullsv;
20cec16a 1713 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1714 LEAVE;
1715 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1716 dSP;
774d564b 1717 SV *msg;
1718
1719 ENTER;
3a1f2dc9 1720 save_re_context();
06bf62c7 1721 msg = newSVpvn(message, msglen);
774d564b 1722 SvREADONLY_on(msg);
1723 SAVEFREESV(msg);
1724
e788e7d3 1725 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1726 PUSHMARK(SP);
774d564b 1727 XPUSHs(msg);
20cec16a 1728 PUTBACK;
864dbfa3 1729 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1730 POPSTACK;
774d564b 1731 LEAVE;
20cec16a 1732 return;
1733 }
748a9306 1734 }
bf49b057
GS		 1735 {
1736 PerlIO *serr = Perl_error_log;
1737
1738 PerlIO_write(serr, message, msglen);
a687059c 1739#ifdef LEAKTEST
bf49b057
GS		 1740 DEBUG_L(*message == '!'
1741 ? (xstat(message[1]=='!'
1742 ? (message[2]=='!' ? 2 : 1)
1743 : 0)
1744 , 0)
1745 : 0);
a687059c 1746#endif
bf49b057
GS		 1747 (void)PerlIO_flush(serr);
1748 }
a687059c 1749}
8d063cd8 1750
c5be433b 1751#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1752void
1753Perl_warn_nocontext(const char *pat, ...)
1754{
1755 dTHX;
1756 va_list args;
1757 va_start(args, pat);
c5be433b 1758 vwarn(pat, &args);
cea2e8a9
GS		 1759 va_end(args);
1760}
1761#endif /* PERL_IMPLICIT_CONTEXT */
1762
954c1994
GS		 1763/*
1764=for apidoc warn
1765
1766This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1767function the same way you use the C C<printf> function. See
1768C<croak>.
1769
1770=cut
1771*/
1772
cea2e8a9
GS		 1773void
1774Perl_warn(pTHX_ const char *pat, ...)
1775{
1776 va_list args;
1777 va_start(args, pat);
c5be433b 1778 vwarn(pat, &args);
cea2e8a9
GS		 1779 va_end(args);
1780}
1781
c5be433b
GS		 1782#if defined(PERL_IMPLICIT_CONTEXT)
1783void
1784Perl_warner_nocontext(U32 err, const char *pat, ...)
1785{
1786 dTHX;
1787 va_list args;
1788 va_start(args, pat);
1789 vwarner(err, pat, &args);
1790 va_end(args);
1791}
1792#endif /* PERL_IMPLICIT_CONTEXT */
1793
599cee73 1794void
864dbfa3 1795Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1796{
1797 va_list args;
c5be433b
GS		 1798 va_start(args, pat);
1799 vwarner(err, pat, &args);
1800 va_end(args);
1801}
1802
1803void
1804Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1805{
1806 dTHR;
599cee73
PM		 1807 char *message;
1808 HV *stash;
1809 GV *gv;
1810 CV *cv;
06bf62c7
GS		 1811 SV *msv;
1812 STRLEN msglen;
599cee73 1813
5a844595 1814 msv = vmess(pat, args);
06bf62c7 1815 message = SvPV(msv, msglen);
599cee73
PM		 1816
1817 if (ckDEAD(err)) {
1818#ifdef USE_THREADS
b900a521 1819 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1820#endif /* USE_THREADS */
1821 if (PL_diehook) {
cea2e8a9 1822 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1823 SV *olddiehook = PL_diehook;
1824 ENTER;
1825 SAVESPTR(PL_diehook);
1826 PL_diehook = Nullsv;
1827 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1828 LEAVE;
1829 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1830 dSP;
1831 SV *msg;
1832
1833 ENTER;
3a1f2dc9 1834 save_re_context();
06bf62c7 1835 msg = newSVpvn(message, msglen);
599cee73
PM		 1836 SvREADONLY_on(msg);
1837 SAVEFREESV(msg);
1838
3a1f2dc9 1839 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1840 PUSHMARK(sp);
1841 XPUSHs(msg);
1842 PUTBACK;
864dbfa3 1843 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1844 POPSTACK;
599cee73
PM		 1845 LEAVE;
1846 }
1847 }
1848 if (PL_in_eval) {
06bf62c7 1849 PL_restartop = die_where(message, msglen);
599cee73
PM		 1850 JMPENV_JUMP(3);
1851 }
bf49b057
GS		 1852 {
1853 PerlIO *serr = Perl_error_log;
1854 PerlIO_write(serr, message, msglen);
1855 (void)PerlIO_flush(serr);
1856 }
599cee73
PM		 1857 my_failure_exit();
1858
1859 }
1860 else {
1861 if (PL_warnhook) {
cea2e8a9 1862 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1863 dTHR;
1864 SV *oldwarnhook = PL_warnhook;
1865 ENTER;
1866 SAVESPTR(PL_warnhook);
1867 PL_warnhook = Nullsv;
1868 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1869 LEAVE;
599cee73
PM		 1870 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1871 dSP;
1872 SV *msg;
1873
1874 ENTER;
3a1f2dc9 1875 save_re_context();
06bf62c7 1876 msg = newSVpvn(message, msglen);
599cee73
PM		 1877 SvREADONLY_on(msg);
1878 SAVEFREESV(msg);
1879
3a1f2dc9 1880 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1881 PUSHMARK(sp);
1882 XPUSHs(msg);
1883 PUTBACK;
864dbfa3 1884 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1885 POPSTACK;
599cee73
PM		 1886 LEAVE;
1887 return;
1888 }
1889 }
bf49b057
GS		 1890 {
1891 PerlIO *serr = Perl_error_log;
1892 PerlIO_write(serr, message, msglen);
599cee73 1893#ifdef LEAKTEST
bf49b057 1894 DEBUG_L(xstat());
599cee73 1895#endif
bf49b057
GS		 1896 (void)PerlIO_flush(serr);
1897 }
599cee73
PM		 1898 }
1899}
1900
a0d0e21e 1901#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1902#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1903void
864dbfa3 1904Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1905{
f2517201
GS		 1906#ifndef PERL_USE_SAFE_PUTENV
1907 /* most putenv()s leak, so we manipulate environ directly */
79072805 1908 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1909
3280af22 1910 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1911 I32 j;
1912 I32 max;
fe14fcc3
LW		 1913 char **tmpenv;
1914
de3bb511 1915 /*SUPPRESS 530*/
fe14fcc3 1916 for (max = i; environ[max]; max++) ;
f2517201
GS		 1917 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1918 for (j=0; j<max; j++) { /* copy environment */
1919 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1920 strcpy(tmpenv[j], environ[j]);
1921 }
fe14fcc3
LW		 1922 tmpenv[max] = Nullch;
1923 environ = tmpenv; /* tell exec where it is now */
1924 }
a687059c 1925 if (!val) {
f2517201 1926 safesysfree(environ[i]);
a687059c
LW		 1927 while (environ[i]) {
1928 environ[i] = environ[i+1];
1929 i++;
1930 }
1931 return;
1932 }
8d063cd8 1933 if (!environ[i]) { /* does not exist yet */
f2517201 1934 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1935 environ[i+1] = Nullch; /* make sure it's null terminated */
1936 }
fe14fcc3 1937 else
f2517201
GS		 1938 safesysfree(environ[i]);
1939 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1940
a687059c 1941 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1942
1943#else /* PERL_USE_SAFE_PUTENV */
1944 char *new_env;
1945
1946 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1947 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1948 (void)putenv(new_env);
1949#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1950}
1951
d308986b
GS		 1952#else /* WIN32 || __CYGWIN__ */
1953#if defined(__CYGWIN__)
1cab015a
EF		 1954/*
1955 * Save environ of perl.exe, currently Cygwin links in separate environ's
1956 * for each exe/dll. Probably should be a member of impure_ptr.
1957 */
1958static char ***Perl_main_environ;
1959
1960EXTERN_C void
1961Perl_my_setenv_init(char ***penviron)
1962{
1963 Perl_main_environ = penviron;
1964}
1965
1966void
0a9fdc5d 1967Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 1968{
1969 /* You can not directly manipulate the environ[] array because
1970 * the routines do some additional work that syncs the Cygwin
1971 * environment with the Windows environment.
1972 */
1973 char *oldstr = environ[setenv_getix(nam)];
1974
1975 if (!val) {
1976 if (!oldstr)
1977 return;
1978 unsetenv(nam);
d702ae42 1979 safesysfree(oldstr);
1cab015a
EF		 1980 return;
1981 }
1982 setenv(nam, val, 1);
1983 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1984 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1985 safesysfree(oldstr);
1cab015a 1986}
3e3baf6d 1987#else /* if WIN32 */
68dc0745 1988
1989void
864dbfa3 1990Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1991{
3e3baf6d
TB		 1992
1993#ifdef USE_WIN32_RTL_ENV
1994
68dc0745 1995 register char *envstr;
1996 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1997 STRLEN vallen;
1998 char *oldstr = environ[setenv_getix(nam)];
1999
2000 /* putenv() has totally broken semantics in both the Borland
2001 * and Microsoft CRTLs. They either store the passed pointer in
2002 * the environment without making a copy, or make a copy and don't
2003 * free it. And on top of that, they dont free() old entries that
2004 * are being replaced/deleted. This means the caller must
2005 * free any old entries somehow, or we end up with a memory
2006 * leak every time my_setenv() is called. One might think
2007 * one could directly manipulate environ[], like the UNIX code
2008 * above, but direct changes to environ are not allowed when
2009 * calling putenv(), since the RTLs maintain an internal
2010 * *copy* of environ[]. Bad, bad, *bad* stink.
2011 * GSAR 97-06-07
2012 */
68dc0745 2013
3e3baf6d
TB		 2014 if (!val) {
2015 if (!oldstr)
2016 return;
2017 val = "";
2018 vallen = 0;
2019 }
2020 else
2021 vallen = strlen(val);
f2517201 2022 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2023 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2024 (void)PerlEnv_putenv(envstr);
3e3baf6d 2025 if (oldstr)
f2517201 2026 safesysfree(oldstr);
3e3baf6d 2027#ifdef _MSC_VER
f2517201 2028 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2029#endif
2030
2031#else /* !USE_WIN32_RTL_ENV */
2032
ac5c734f
GS		 2033 register char *envstr;
2034 STRLEN len = strlen(nam) + 3;
2035 if (!val) {
2036 val = "";
2037 }
2038 len += strlen(val);
2039 New(904, envstr, len, char);
2040 (void)sprintf(envstr,"%s=%s",nam,val);
2041 (void)PerlEnv_putenv(envstr);
2042 Safefree(envstr);
3e3baf6d
TB		 2043
2044#endif
2045}
2046
2047#endif /* WIN32 */
1cab015a 2048#endif
3e3baf6d
TB		 2049
2050I32
864dbfa3 2051Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2052{
2053 register I32 i, len = strlen(nam);
2054
2055 for (i = 0; environ[i]; i++) {
2056 if (
2057#ifdef WIN32
2058 strnicmp(environ[i],nam,len) == 0
2059#else
2060 strnEQ(environ[i],nam,len)
2061#endif
2062 && environ[i][len] == '=')
2063 break; /* strnEQ must come first to avoid */
2064 } /* potential SEGV's */
2065 return i;
68dc0745 2066}
2067
a0d0e21e 2068#endif /* !VMS */
378cc40b 2069
16d20bd9 2070#ifdef UNLINK_ALL_VERSIONS
79072805 2071I32
864dbfa3 2072Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2073{
79072805 2074 I32 i;
378cc40b 2075
6ad3d225 2076 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2077 return i ? 0 : -1;
2078}
2079#endif
2080
7a3f2258 2081/* this is a drop-in replacement for bcopy() */
85e6fe83 2082#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2083char *
7a3f2258 2084Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2085{
2086 char *retval = to;
2087
7c0587c8
LW		 2088 if (from - to >= 0) {
2089 while (len--)
2090 *to++ = *from++;
2091 }
2092 else {
2093 to += len;
2094 from += len;
2095 while (len--)
faf8582f 2096 *(--to) = *(--from);
7c0587c8 2097 }
378cc40b
LW		 2098 return retval;
2099}
ffed7fef 2100#endif
378cc40b 2101
7a3f2258 2102/* this is a drop-in replacement for memset() */
fc36a67e 2103#ifndef HAS_MEMSET
2104void *
7a3f2258 2105Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2106{
2107 char *retval = loc;
2108
2109 while (len--)
2110 *loc++ = ch;
2111 return retval;
2112}
2113#endif
2114
7a3f2258 2115/* this is a drop-in replacement for bzero() */
7c0587c8 2116#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2117char *
7a3f2258 2118Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2119{
2120 char *retval = loc;
2121
2122 while (len--)
2123 *loc++ = 0;
2124 return retval;
2125}
2126#endif
7c0587c8 2127
7a3f2258 2128/* this is a drop-in replacement for memcmp() */
36477c24 2129#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2130I32
7a3f2258 2131Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2132{
36477c24 2133 register U8 *a = (U8 *)s1;
2134 register U8 *b = (U8 *)s2;
79072805 2135 register I32 tmp;
7c0587c8
LW		 2136
2137 while (len--) {
36477c24 2138 if (tmp = *a++ - *b++)
7c0587c8
LW		 2139 return tmp;
2140 }
2141 return 0;
2142}
36477c24 2143#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2144
fe14fcc3 2145#ifndef HAS_VPRINTF
a687059c 2146
85e6fe83 2147#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2148char *
2149#else
2150int
2151#endif
08105a92 2152vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2153{
2154 FILE fakebuf;
2155
2156 fakebuf._ptr = dest;
2157 fakebuf._cnt = 32767;
35c8bce7
LW		 2158#ifndef _IOSTRG
2159#define _IOSTRG 0
2160#endif
a687059c
LW		 2161 fakebuf._flag = _IOWRT|_IOSTRG;
2162 _doprnt(pat, args, &fakebuf); /* what a kludge */
2163 (void)putc('\0', &fakebuf);
85e6fe83 2164#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2165 return(dest);
2166#else
2167 return 0; /* perl doesn't use return value */
2168#endif
2169}
2170
fe14fcc3 2171#endif /* HAS_VPRINTF */
a687059c
LW		 2172
2173#ifdef MYSWAP
ffed7fef 2174#if BYTEORDER != 0x4321
a687059c 2175short
864dbfa3 2176Perl_my_swap(pTHX_ short s)
a687059c
LW		 2177{
2178#if (BYTEORDER & 1) == 0
2179 short result;
2180
2181 result = ((s & 255) << 8) + ((s >> 8) & 255);
2182 return result;
2183#else
2184 return s;
2185#endif
2186}
2187
2188long
864dbfa3 2189Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2190{
2191 union {
2192 long result;
ffed7fef 2193 char c[sizeof(long)];
a687059c
LW		 2194 } u;
2195
ffed7fef 2196#if BYTEORDER == 0x1234
a687059c
LW		 2197 u.c[0] = (l >> 24) & 255;
2198 u.c[1] = (l >> 16) & 255;
2199 u.c[2] = (l >> 8) & 255;
2200 u.c[3] = l & 255;
2201 return u.result;
2202#else
ffed7fef 2203#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2204 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2205#else
79072805
LW		 2206 register I32 o;
2207 register I32 s;
a687059c 2208
ffed7fef
LW		 2209 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2210 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2211 }
2212 return u.result;
2213#endif
2214#endif
2215}
2216
2217long
864dbfa3 2218Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2219{
2220 union {
2221 long l;
ffed7fef 2222 char c[sizeof(long)];
a687059c
LW		 2223 } u;
2224
ffed7fef 2225#if BYTEORDER == 0x1234
a687059c
LW		 2226 u.c[0] = (l >> 24) & 255;
2227 u.c[1] = (l >> 16) & 255;
2228 u.c[2] = (l >> 8) & 255;
2229 u.c[3] = l & 255;
2230 return u.l;
2231#else
ffed7fef 2232#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2233 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2234#else
79072805
LW		 2235 register I32 o;
2236 register I32 s;
a687059c
LW		 2237
2238 u.l = l;
2239 l = 0;
ffed7fef
LW		 2240 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2241 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2242 }
2243 return l;
2244#endif
2245#endif
2246}
2247
ffed7fef 2248#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2249#endif /* MYSWAP */
2250
2251/*
2252 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2253 * If these functions are defined,
2254 * the BYTEORDER is neither 0x1234 nor 0x4321.
2255 * However, this is not assumed.
2256 * -DWS
2257 */
2258
2259#define HTOV(name,type) \
2260 type \
ba106d47 2261 name (register type n) \
988174c1
LW		 2262 { \
2263 union { \
2264 type value; \
2265 char c[sizeof(type)]; \
2266 } u; \
79072805
LW		 2267 register I32 i; \
2268 register I32 s; \
988174c1
LW		 2269 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2270 u.c[i] = (n >> s) & 0xFF; \
2271 } \
2272 return u.value; \
2273 }
2274
2275#define VTOH(name,type) \
2276 type \
ba106d47 2277 name (register type n) \
988174c1
LW		 2278 { \
2279 union { \
2280 type value; \
2281 char c[sizeof(type)]; \
2282 } u; \
79072805
LW		 2283 register I32 i; \
2284 register I32 s; \
988174c1
LW		 2285 u.value = n; \
2286 n = 0; \
2287 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2288 n += (u.c[i] & 0xFF) << s; \
2289 } \
2290 return n; \
2291 }
2292
2293#if defined(HAS_HTOVS) && !defined(htovs)
2294HTOV(htovs,short)
2295#endif
2296#if defined(HAS_HTOVL) && !defined(htovl)
2297HTOV(htovl,long)
2298#endif
2299#if defined(HAS_VTOHS) && !defined(vtohs)
2300VTOH(vtohs,short)
2301#endif
2302#if defined(HAS_VTOHL) && !defined(vtohl)
2303VTOH(vtohl,long)
2304#endif
a687059c 2305
5f05dabc 2306 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2307#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2308PerlIO *
864dbfa3 2309Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2310{
2311 int p[2];
8ac85365 2312 register I32 This, that;
d8a83dd3 2313 register Pid_t pid;
79072805 2314 SV *sv;
1738f5c4 2315 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2316 I32 did_pipes = 0;
2317 int pp[2];
a687059c 2318
45bc9206 2319 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2320#ifdef OS2
2321 if (doexec) {
23da6c43 2322 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2323 }
2324#endif
8ac85365
NIS		 2325 This = (*mode == 'w');
2326 that = !This;
3280af22 2327 if (doexec && PL_tainting) {
bbce6d69 2328 taint_env();
2329 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2330 }
c2267164
IZ		 2331 if (PerlProc_pipe(p) < 0)
2332 return Nullfp;
e446cec8
IZ		 2333 if (doexec && PerlProc_pipe(pp) >= 0)
2334 did_pipes = 1;
a687059c
LW		 2335 while ((pid = (doexec?vfork():fork())) < 0) {
2336 if (errno != EAGAIN) {
6ad3d225 2337 PerlLIO_close(p[This]);
e446cec8
IZ		 2338 if (did_pipes) {
2339 PerlLIO_close(pp[0]);
2340 PerlLIO_close(pp[1]);
2341 }
a687059c 2342 if (!doexec)
cea2e8a9 2343 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2344 return Nullfp;
2345 }
2346 sleep(5);
2347 }
2348 if (pid == 0) {
79072805
LW		 2349 GV* tmpgv;
2350
30ac6d9b
GS		 2351#undef THIS
2352#undef THAT
a687059c 2353#define THIS that
8ac85365 2354#define THAT This
6ad3d225 2355 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2356 if (did_pipes) {
2357 PerlLIO_close(pp[0]);
2358#if defined(HAS_FCNTL) && defined(F_SETFD)
2359 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2360#endif
2361 }
a687059c 2362 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2363 PerlLIO_dup2(p[THIS], *mode == 'r');
2364 PerlLIO_close(p[THIS]);
a687059c 2365 }
4435c477 2366#ifndef OS2
a687059c 2367 if (doexec) {
a0d0e21e 2368#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2369 int fd;
2370
2371#ifndef NOFILE
2372#define NOFILE 20
2373#endif
6b88bc9c 2374 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2375 if (fd != pp[1])
2376 PerlLIO_close(fd);
ae986130 2377#endif
e446cec8 2378 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2379 PerlProc__exit(1);
a687059c 2380 }
4435c477 2381#endif /* defined OS2 */
de3bb511 2382 /*SUPPRESS 560*/
155aba94 2383 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2384 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2385 PL_forkprocess = 0;
2386 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2387 return Nullfp;
2388#undef THIS
2389#undef THAT
2390 }
62b28dd9 2391 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2392 PerlLIO_close(p[that]);
e446cec8
IZ		 2393 if (did_pipes)
2394 PerlLIO_close(pp[1]);
8ac85365 2395 if (p[that] < p[This]) {
6ad3d225
GS		 2396 PerlLIO_dup2(p[This], p[that]);
2397 PerlLIO_close(p[This]);
8ac85365 2398 p[This] = p[that];
62b28dd9 2399 }
3280af22 2400 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2401 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2402 SvIVX(sv) = pid;
3280af22 2403 PL_forkprocess = pid;
e446cec8
IZ		 2404 if (did_pipes && pid > 0) {
2405 int errkid;
2406 int n = 0, n1;
2407
2408 while (n < sizeof(int)) {
2409 n1 = PerlLIO_read(pp[0],
2410 (void*)(((char*)&errkid)+n),
2411 (sizeof(int)) - n);
2412 if (n1 <= 0)
2413 break;
2414 n += n1;
2415 }
2f96c702
IZ		 2416 PerlLIO_close(pp[0]);
2417 did_pipes = 0;
e446cec8
IZ		 2418 if (n) { /* Error */
2419 if (n != sizeof(int))
cea2e8a9 2420 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2421 errno = errkid; /* Propagate errno from kid */
2422 return Nullfp;
2423 }
2424 }
2425 if (did_pipes)
2426 PerlLIO_close(pp[0]);
8ac85365 2427 return PerlIO_fdopen(p[This], mode);
a687059c 2428}
7c0587c8 2429#else
55497cff 2430#if defined(atarist) || defined(DJGPP)
7c0587c8 2431FILE *popen();
760ac839 2432PerlIO *
864dbfa3 2433Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2434{
760ac839 2435 /* Needs work for PerlIO ! */
55497cff 2436 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2437 PERL_FLUSHALL_FOR_CHILD;
55497cff 2438 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2439}
2440#endif
2441
2442#endif /* !DOSISH */
a687059c 2443
748a9306 2444#ifdef DUMP_FDS
35ff7856 2445void
864dbfa3 2446Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2447{
2448 int fd;
2449 struct stat tmpstatbuf;
2450
bf49b057 2451 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2452 for (fd = 0; fd < 32; fd++) {
6ad3d225 2453 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2454 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2455 }
bf49b057 2456 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2457}
35ff7856 2458#endif /* DUMP_FDS */
ae986130 2459
fe14fcc3 2460#ifndef HAS_DUP2
fec02dd3 2461int
ba106d47 2462dup2(int oldfd, int newfd)
a687059c 2463{
a0d0e21e 2464#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2465 if (oldfd == newfd)
2466 return oldfd;
6ad3d225 2467 PerlLIO_close(newfd);
fec02dd3 2468 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2469#else
fc36a67e 2470#define DUP2_MAX_FDS 256
2471 int fdtmp[DUP2_MAX_FDS];
79072805 2472 I32 fdx = 0;
ae986130
LW		 2473 int fd;
2474
fe14fcc3 2475 if (oldfd == newfd)
fec02dd3 2476 return oldfd;
6ad3d225 2477 PerlLIO_close(newfd);
fc36a67e 2478 /* good enough for low fd's... */
6ad3d225 2479 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2480 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2481 PerlLIO_close(fd);
fc36a67e 2482 fd = -1;
2483 break;
2484 }
ae986130 2485 fdtmp[fdx++] = fd;
fc36a67e 2486 }
ae986130 2487 while (fdx > 0)
6ad3d225 2488 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2489 return fd;
62b28dd9 2490#endif
a687059c
LW		 2491}
2492#endif
2493
ff68c719 2494
2495#ifdef HAS_SIGACTION
2496
2497Sighandler_t
864dbfa3 2498Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2499{
2500 struct sigaction act, oact;
2501
2502 act.sa_handler = handler;
2503 sigemptyset(&act.sa_mask);
2504 act.sa_flags = 0;
2505#ifdef SA_RESTART
2506 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2507#endif
85264bed
CS		 2508#ifdef SA_NOCLDWAIT
2509 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2510 act.sa_flags |= SA_NOCLDWAIT;
2511#endif
ff68c719 2512 if (sigaction(signo, &act, &oact) == -1)
36477c24 2513 return SIG_ERR;
ff68c719 2514 else
36477c24 2515 return oact.sa_handler;
ff68c719 2516}
2517
2518Sighandler_t
864dbfa3 2519Perl_rsignal_state(pTHX_ int signo)
ff68c719 2520{
2521 struct sigaction oact;
2522
2523 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2524 return SIG_ERR;
2525 else
2526 return oact.sa_handler;
2527}
2528
2529int
864dbfa3 2530Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2531{
2532 struct sigaction act;
2533
2534 act.sa_handler = handler;
2535 sigemptyset(&act.sa_mask);
2536 act.sa_flags = 0;
2537#ifdef SA_RESTART
2538 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2539#endif
85264bed
CS		 2540#ifdef SA_NOCLDWAIT
2541 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2542 act.sa_flags |= SA_NOCLDWAIT;
2543#endif
ff68c719 2544 return sigaction(signo, &act, save);
2545}
2546
2547int
864dbfa3 2548Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2549{
2550 return sigaction(signo, save, (struct sigaction *)NULL);
2551}
2552
2553#else /* !HAS_SIGACTION */
2554
2555Sighandler_t
864dbfa3 2556Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2557{
6ad3d225 2558 return PerlProc_signal(signo, handler);
ff68c719 2559}
2560
2561static int sig_trapped;
2562
2563static
2564Signal_t
4e35701f 2565sig_trap(int signo)
ff68c719 2566{
2567 sig_trapped++;
2568}
2569
2570Sighandler_t
864dbfa3 2571Perl_rsignal_state(pTHX_ int signo)
ff68c719 2572{
2573 Sighandler_t oldsig;
2574
2575 sig_trapped = 0;
6ad3d225
GS		 2576 oldsig = PerlProc_signal(signo, sig_trap);
2577 PerlProc_signal(signo, oldsig);
ff68c719 2578 if (sig_trapped)
7766f137 2579 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2580 return oldsig;
2581}
2582
2583int
864dbfa3 2584Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2585{
6ad3d225 2586 *save = PerlProc_signal(signo, handler);
ff68c719 2587 return (*save == SIG_ERR) ? -1 : 0;
2588}
2589
2590int
864dbfa3 2591Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2592{
6ad3d225 2593 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2594}
2595
2596#endif /* !HAS_SIGACTION */
2597
5f05dabc 2598 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2599#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2600I32
864dbfa3 2601Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2602{
ff68c719 2603 Sigsave_t hstat, istat, qstat;
a687059c 2604 int status;
a0d0e21e 2605 SV **svp;
d8a83dd3
JH		 2606 Pid_t pid;
2607 Pid_t pid2;
03136e13
CS		 2608 bool close_failed;
2609 int saved_errno;
2610#ifdef VMS
2611 int saved_vaxc_errno;
2612#endif
22fae026
TM		 2613#ifdef WIN32
2614 int saved_win32_errno;
2615#endif
a687059c 2616
3280af22 2617 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2618 pid = SvIVX(*svp);
a0d0e21e 2619 SvREFCNT_dec(*svp);
3280af22 2620 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2621#ifdef OS2
2622 if (pid == -1) { /* Opened by popen. */
2623 return my_syspclose(ptr);
2624 }
2625#endif
03136e13
CS		 2626 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2627 saved_errno = errno;
2628#ifdef VMS
2629 saved_vaxc_errno = vaxc$errno;
2630#endif
22fae026
TM		 2631#ifdef WIN32
2632 saved_win32_errno = GetLastError();
2633#endif
03136e13 2634 }
7c0587c8 2635#ifdef UTS
6ad3d225 2636 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2637#endif
ff68c719 2638 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2639 rsignal_save(SIGINT, SIG_IGN, &istat);
2640 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2641 do {
1d3434b8
GS		 2642 pid2 = wait4pid(pid, &status, 0);
2643 } while (pid2 == -1 && errno == EINTR);
ff68c719 2644 rsignal_restore(SIGHUP, &hstat);
2645 rsignal_restore(SIGINT, &istat);
2646 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2647 if (close_failed) {
2648 SETERRNO(saved_errno, saved_vaxc_errno);
2649 return -1;
2650 }
1d3434b8 2651 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2652}
4633a7c4
LW		 2653#endif /* !DOSISH */
2654
cd39f2b6 2655#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2656I32
d8a83dd3 2657Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2658{
79072805
LW		 2659 SV *sv;
2660 SV** svp;
fc36a67e 2661 char spid[TYPE_CHARS(int)];
20188a90
LW		 2662
2663 if (!pid)
2664 return -1;
20188a90 2665 if (pid > 0) {
7b0972df 2666 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2667 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2668 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2669 *statusp = SvIVX(*svp);
3280af22 2670 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2671 return pid;
2672 }
2673 }
2674 else {
79072805 2675 HE *entry;
20188a90 2676
3280af22 2677 hv_iterinit(PL_pidstatus);
155aba94 2678 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2679 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2680 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2681 *statusp = SvIVX(sv);
7b0972df 2682 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2683 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2684 return pid;
2685 }
2686 }
79072805 2687#ifdef HAS_WAITPID
367f3c24
IZ		 2688# ifdef HAS_WAITPID_RUNTIME
2689 if (!HAS_WAITPID_RUNTIME)
2690 goto hard_way;
2691# endif
f55ee38a 2692 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2693#endif
2694#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2695 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2696#endif
2697#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2698 hard_way:
a0d0e21e
LW		 2699 {
2700 I32 result;
2701 if (flags)
cea2e8a9 2702 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2703 else {
76e3520e 2704 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2705 pidgone(result,*statusp);
2706 if (result < 0)
2707 *statusp = -1;
2708 }
2709 return result;
a687059c
LW		 2710 }
2711#endif
a687059c 2712}
2d7a9237 2713#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2714
7c0587c8 2715void
de3bb511 2716/*SUPPRESS 590*/
d8a83dd3 2717Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2718{
79072805 2719 register SV *sv;
fc36a67e 2720 char spid[TYPE_CHARS(int)];
a687059c 2721
7b0972df 2722 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2723 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2724 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2725 SvIVX(sv) = status;
20188a90 2726 return;
a687059c
LW		 2727}
2728
55497cff 2729#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2730int pclose();
ddcf38b7
IZ		 2731#ifdef HAS_FORK
2732int /* Cannot prototype with I32
2733 in os2ish.h. */
ba106d47 2734my_syspclose(PerlIO *ptr)
ddcf38b7 2735#else
79072805 2736I32
864dbfa3 2737Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2738#endif
a687059c 2739{
760ac839
LW		 2740 /* Needs work for PerlIO ! */
2741 FILE *f = PerlIO_findFILE(ptr);
2742 I32 result = pclose(f);
933fea7f
GS		 2743#if defined(DJGPP)
2744 result = (result << 8) & 0xff00;
2745#endif
760ac839
LW		 2746 PerlIO_releaseFILE(ptr,f);
2747 return result;
a687059c 2748}
7c0587c8 2749#endif
9f68db38
LW		 2750
2751void
864dbfa3 2752Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2753{
79072805 2754 register I32 todo;
08105a92 2755 register const char *frombase = from;
9f68db38
LW		 2756
2757 if (len == 1) {
08105a92 2758 register const char c = *from;
9f68db38 2759 while (count-- > 0)
5926133d 2760 *to++ = c;
9f68db38
LW		 2761 return;
2762 }
2763 while (count-- > 0) {
2764 for (todo = len; todo > 0; todo--) {
2765 *to++ = *from++;
2766 }
2767 from = frombase;
2768 }
2769}
0f85fab0 2770
463ee0b2 2771U32
65202027 2772Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2773{
2774 long along;
2775
27e2fb84 2776#if CASTFLAGS & 2
34de22dd
LW		 2777# define BIGDOUBLE 2147483648.0
2778 if (f >= BIGDOUBLE)
2779 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2780#endif
0f85fab0
LW		 2781 if (f >= 0.0)
2782 return (unsigned long)f;
2783 along = (long)f;
2784 return (unsigned long)along;
2785}
ed6116ce 2786# undef BIGDOUBLE
5d94fbed 2787
5d94fbed
AD		 2788/* Unfortunately, on some systems the cast_uv() function doesn't
2789 work with the system-supplied definition of ULONG_MAX. The
2790 comparison (f >= ULONG_MAX) always comes out true. It must be a
2791 problem with the compiler constant folding.
2792
2793 In any case, this workaround should be fine on any two's complement
2794 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2795 ccflags.
2796 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2797*/
1eb770ff 2798
2799/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2800 of LONG_(MIN/MAX).
2801 -- Kenneth Albanowski <kjahds@kjahds.com>
2802*/
2803
20cec16a 2804#ifndef MY_UV_MAX
2805# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2806#endif
2807
ed6116ce 2808I32
65202027 2809Perl_cast_i32(pTHX_ NV f)
ed6116ce 2810{
20cec16a 2811 if (f >= I32_MAX)
2812 return (I32) I32_MAX;
2813 if (f <= I32_MIN)
2814 return (I32) I32_MIN;
ed6116ce
LW		 2815 return (I32) f;
2816}
a0d0e21e
LW		 2817
2818IV
65202027 2819Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2820{
25da4f38
IZ		 2821 if (f >= IV_MAX) {
2822 UV uv;
2823
65202027 2824 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2825 return (IV) UV_MAX;
2826 uv = (UV) f;
2827 return (IV)uv;
2828 }
20cec16a 2829 if (f <= IV_MIN)
2830 return (IV) IV_MIN;
a0d0e21e
LW		 2831 return (IV) f;
2832}
5d94fbed
AD		 2833
2834UV
65202027 2835Perl_cast_uv(pTHX_ NV f)
5d94fbed 2836{
20cec16a 2837 if (f >= MY_UV_MAX)
2838 return (UV) MY_UV_MAX;
25da4f38
IZ		 2839 if (f < 0) {
2840 IV iv;
2841
2842 if (f < IV_MIN)
2843 return (UV)IV_MIN;
2844 iv = (IV) f;
2845 return (UV) iv;
2846 }
5d94fbed
AD		 2847 return (UV) f;
2848}
2849
fe14fcc3 2850#ifndef HAS_RENAME
79072805 2851I32
864dbfa3 2852Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2853{
93a17b20
LW		 2854 char *fa = strrchr(a,'/');
2855 char *fb = strrchr(b,'/');
62b28dd9
LW		 2856 struct stat tmpstatbuf1;
2857 struct stat tmpstatbuf2;
46fc3d4c 2858 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2859
2860 if (fa)
2861 fa++;
2862 else
2863 fa = a;
2864 if (fb)
2865 fb++;
2866 else
2867 fb = b;
2868 if (strNE(a,b))
2869 return FALSE;
2870 if (fa == a)
46fc3d4c 2871 sv_setpv(tmpsv, ".");
62b28dd9 2872 else
46fc3d4c 2873 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2874 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2875 return FALSE;
2876 if (fb == b)
46fc3d4c 2877 sv_setpv(tmpsv, ".");
62b28dd9 2878 else
46fc3d4c 2879 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2880 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2881 return FALSE;
2882 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2883 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2884}
fe14fcc3
LW		 2885#endif /* !HAS_RENAME */
2886
9e24b6e2 2887NV
864dbfa3 2888Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2889{
2890 register char *s = start;
9e24b6e2
JH		 2891 register NV rnv = 0.0;
2892 register UV ruv = 0;
252aa082 2893 register bool seenb = FALSE;
9e24b6e2 2894 register bool overflowed = FALSE;
252aa082
JH		 2895
2896 for (; len-- && *s; s++) {
2897 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2898 if (*s == '_' && len && *retlen
2899 && (s[1] == '0' || s[1] == '1'))
2900 {
2901 --len;
2902 ++s;
2903 }
2904 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2905 /* Disallow 0bbb0b0bbb... */
2906 seenb = TRUE;
252aa082
JH		 2907 continue;
2908 }
2909 else {
2910 dTHR;
627300f0
JH		 2911 if (ckWARN(WARN_DIGIT))
2912 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2913 "Illegal binary digit '%c' ignored", *s);
2914 break;
2915 }
9e24b6e2
JH		 2916 }
2917 if (!overflowed) {
2918 register UV xuv = ruv << 1;
2919
2920 if ((xuv >> 1) != ruv) {
2921 dTHR;
2922 overflowed = TRUE;
2923 rnv = (NV) ruv;
627300f0
JH		 2924 if (ckWARN_d(WARN_OVERFLOW))
2925 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2926 "Integer overflow in binary number");
b21ed0a9
GS		 2927 }
2928 else
9e24b6e2
JH		 2929 ruv = xuv | (*s - '0');
2930 }
2931 if (overflowed) {
2932 rnv *= 2;
2933 /* If an NV has not enough bits in its mantissa to
2934 * represent an UV this summing of small low-order numbers
2935 * is a waste of time (because the NV cannot preserve
2936 * the low-order bits anyway): we could just remember when
2937 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2938 * right amount. */
9e24b6e2 2939 rnv += (*s - '0');
f248d071 2940 }
4f19785b 2941 }
9e24b6e2
JH		 2942 if (!overflowed)
2943 rnv = (NV) ruv;
893fe2c2 2944 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2945#if UVSIZE > 4
893fe2c2
JH		 2946 || (!overflowed && ruv > 0xffffffff )
2947#endif
2948 ) {
252aa082 2949 dTHR;
627300f0
JH		 2950 if (ckWARN(WARN_PORTABLE))
2951 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2952 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2953 }
2954 *retlen = s - start;
9e24b6e2 2955 return rnv;
4f19785b 2956}
9e24b6e2
JH		 2957
2958NV
864dbfa3 2959Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2960{
2961 register char *s = start;
9e24b6e2
JH		 2962 register NV rnv = 0.0;
2963 register UV ruv = 0;
2964 register bool overflowed = FALSE;
252aa082
JH		 2965
2966 for (; len-- && *s; s++) {
2967 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 2968 if (*s == '_' && len && *retlen
2969 && (s[1] >= '0' && s[1] <= '7'))
2970 {
2971 --len;
2972 ++s;
2973 }
252aa082 2974 else {
f84f607d
JH		 2975 /* Allow \octal to work the DWIM way (that is, stop scanning
2976 * as soon as non-octal characters are seen, complain only iff
2977 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2978 if (*s == '8' || *s == '9') {
2979 dTHR;
627300f0
JH		 2980 if (ckWARN(WARN_DIGIT))
2981 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2982 "Illegal octal digit '%c' ignored", *s);
2983 }
2984 break;
2985 }
55497cff 2986 }
9e24b6e2 2987 if (!overflowed) {
893fe2c2 2988 register UV xuv = ruv << 3;
9e24b6e2
JH		 2989
2990 if ((xuv >> 3) != ruv) {
2991 dTHR;
2992 overflowed = TRUE;
2993 rnv = (NV) ruv;
627300f0
JH		 2994 if (ckWARN_d(WARN_OVERFLOW))
2995 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2996 "Integer overflow in octal number");
b21ed0a9
GS		 2997 }
2998 else
9e24b6e2
JH		 2999 ruv = xuv | (*s - '0');
3000 }
3001 if (overflowed) {
3002 rnv *= 8.0;
3003 /* If an NV has not enough bits in its mantissa to
3004 * represent an UV this summing of small low-order numbers
3005 * is a waste of time (because the NV cannot preserve
3006 * the low-order bits anyway): we could just remember when
3007 * did we overflow and in the end just multiply rnv by the
3008 * right amount of 8-tuples. */
3009 rnv += (NV)(*s - '0');
3010 }
fe14fcc3 3011 }
9e24b6e2
JH		 3012 if (!overflowed)
3013 rnv = (NV) ruv;
893fe2c2 3014 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3015#if UVSIZE > 4
893fe2c2
JH		 3016 || (!overflowed && ruv > 0xffffffff )
3017#endif
3018 ) {
d008e5eb 3019 dTHR;
627300f0
JH		 3020 if (ckWARN(WARN_PORTABLE))
3021 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3022 "Octal number > 037777777777 non-portable");
d008e5eb 3023 }
fe14fcc3 3024 *retlen = s - start;
9e24b6e2 3025 return rnv;
fe14fcc3
LW		 3026}
3027
9e24b6e2 3028NV
864dbfa3 3029Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3030{
3031 register char *s = start;
9e24b6e2
JH		 3032 register NV rnv = 0.0;
3033 register UV ruv = 0;
252aa082 3034 register bool seenx = FALSE;
9e24b6e2 3035 register bool overflowed = FALSE;
9e24b6e2 3036 char *hexdigit;
fe14fcc3 3037
9e24b6e2
JH		 3038 for (; len-- && *s; s++) {
3039 hexdigit = strchr((char *) PL_hexdigit, *s);
3040 if (!hexdigit) {
b21ed0a9
GS		 3041 if (*s == '_' && len && *retlen && s[1]
3042 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3043 {
3044 --len;
3045 ++s;
3046 }
3047 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3048 /* Disallow 0xxx0x0xxx... */
3049 seenx = TRUE;
252aa082
JH		 3050 continue;
3051 }
a0ed51b3 3052 else {
d008e5eb 3053 dTHR;
627300f0
JH		 3054 if (ckWARN(WARN_DIGIT))
3055 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3056 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3057 break;
3058 }
3059 }
9e24b6e2
JH		 3060 if (!overflowed) {
3061 register UV xuv = ruv << 4;
3062
3063 if ((xuv >> 4) != ruv) {
3064 dTHR;
3065 overflowed = TRUE;
3066 rnv = (NV) ruv;
627300f0
JH		 3067 if (ckWARN_d(WARN_OVERFLOW))
3068 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3069 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3070 }
3071 else
9e24b6e2
JH		 3072 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3073 }
3074 if (overflowed) {
3075 rnv *= 16.0;
3076 /* If an NV has not enough bits in its mantissa to
3077 * represent an UV this summing of small low-order numbers
3078 * is a waste of time (because the NV cannot preserve
3079 * the low-order bits anyway): we could just remember when
3080 * did we overflow and in the end just multiply rnv by the
3081 * right amount of 16-tuples. */
3082 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3083 }
6ff81951 3084 }
9e24b6e2
JH		 3085 if (!overflowed)
3086 rnv = (NV) ruv;
893fe2c2 3087 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3088#if UVSIZE > 4
893fe2c2
JH		 3089 || (!overflowed && ruv > 0xffffffff )
3090#endif
3091 ) {
252aa082 3092 dTHR;
627300f0
JH		 3093 if (ckWARN(WARN_PORTABLE))
3094 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3095 "Hexadecimal number > 0xffffffff non-portable");
3096 }
fe14fcc3 3097 *retlen = s - start;
9e24b6e2 3098 return rnv;
fe14fcc3 3099}
760ac839 3100
491527d0 3101char*
864dbfa3 3102Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3103{
3104 dTHR;
3105 char *xfound = Nullch;
3106 char *xfailed = Nullch;
0f31cffe 3107 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3108 register char *s;
3109 I32 len;
3110 int retval;
3111#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3112# define SEARCH_EXTS ".bat", ".cmd", NULL
3113# define MAX_EXT_LEN 4
3114#endif
3115#ifdef OS2
3116# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3117# define MAX_EXT_LEN 4
3118#endif
3119#ifdef VMS
3120# define SEARCH_EXTS ".pl", ".com", NULL
3121# define MAX_EXT_LEN 4
3122#endif
3123 /* additional extensions to try in each dir if scriptname not found */
3124#ifdef SEARCH_EXTS
3125 char *exts[] = { SEARCH_EXTS };
3126 char **ext = search_ext ? search_ext : exts;
3127 int extidx = 0, i = 0;
3128 char *curext = Nullch;
3129#else
3130# define MAX_EXT_LEN 0
3131#endif
3132
3133 /*
3134 * If dosearch is true and if scriptname does not contain path
3135 * delimiters, search the PATH for scriptname.
3136 *
3137 * If SEARCH_EXTS is also defined, will look for each
3138 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3139 * while searching the PATH.
3140 *
3141 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3142 * proceeds as follows:
3143 * If DOSISH or VMSISH:
3144 * + look for ./scriptname{,.foo,.bar}
3145 * + search the PATH for scriptname{,.foo,.bar}
3146 *
3147 * If !DOSISH:
3148 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3149 * this will not look in '.' if it's not in the PATH)
3150 */
84486fc6 3151 tmpbuf[0] = '\0';
491527d0
GS		 3152
3153#ifdef VMS
3154# ifdef ALWAYS_DEFTYPES
3155 len = strlen(scriptname);
3156 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3157 int hasdir, idx = 0, deftypes = 1;
3158 bool seen_dot = 1;
3159
3160 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3161# else
3162 if (dosearch) {
3163 int hasdir, idx = 0, deftypes = 1;
3164 bool seen_dot = 1;
3165
3166 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3167# endif
3168 /* The first time through, just add SEARCH_EXTS to whatever we
3169 * already have, so we can check for default file types. */
3170 while (deftypes ||
84486fc6 3171 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3172 {
3173 if (deftypes) {
3174 deftypes = 0;
84486fc6 3175 *tmpbuf = '\0';
491527d0 3176 }
84486fc6
GS		 3177 if ((strlen(tmpbuf) + strlen(scriptname)
3178 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3179 continue; /* don't search dir with too-long name */
84486fc6 3180 strcat(tmpbuf, scriptname);
491527d0
GS		 3181#else /* !VMS */
3182
3183#ifdef DOSISH
3184 if (strEQ(scriptname, "-"))
3185 dosearch = 0;
3186 if (dosearch) { /* Look in '.' first. */
3187 char *cur = scriptname;
3188#ifdef SEARCH_EXTS
3189 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3190 while (ext[i])
3191 if (strEQ(ext[i++],curext)) {
3192 extidx = -1; /* already has an ext */
3193 break;
3194 }
3195 do {
3196#endif
3197 DEBUG_p(PerlIO_printf(Perl_debug_log,
3198 "Looking for %s\n",cur));
017f25f1
IZ		 3199 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3200 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3201 dosearch = 0;
3202 scriptname = cur;
3203#ifdef SEARCH_EXTS
3204 break;
3205#endif
3206 }
3207#ifdef SEARCH_EXTS
3208 if (cur == scriptname) {
3209 len = strlen(scriptname);
84486fc6 3210 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3211 break;
84486fc6 3212 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3213 }
3214 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3215 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3216#endif
3217 }
3218#endif
3219
cd39f2b6
JH		 3220#ifdef MACOS_TRADITIONAL
3221 if (dosearch && !strchr(scriptname, ':') &&
3222 (s = PerlEnv_getenv("Commands")))
3223#else
491527d0
GS		 3224 if (dosearch && !strchr(scriptname, '/')
3225#ifdef DOSISH
3226 && !strchr(scriptname, '\\')
3227#endif
cd39f2b6
JH		 3228 && (s = PerlEnv_getenv("PATH")))
3229#endif
3230 {
491527d0
GS		 3231 bool seen_dot = 0;
3232
3280af22
NIS		 3233 PL_bufend = s + strlen(s);
3234 while (s < PL_bufend) {
cd39f2b6
JH		 3235#ifdef MACOS_TRADITIONAL
3236 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3237 ',',
3238 &len);
3239#else
491527d0
GS		 3240#if defined(atarist) || defined(DOSISH)
3241 for (len = 0; *s
3242# ifdef atarist
3243 && *s != ','
3244# endif
3245 && *s != ';'; len++, s++) {
84486fc6
GS		 3246 if (len < sizeof tmpbuf)
3247 tmpbuf[len] = *s;
491527d0 3248 }
84486fc6
GS		 3249 if (len < sizeof tmpbuf)
3250 tmpbuf[len] = '\0';
491527d0 3251#else /* ! (atarist || DOSISH) */
3280af22 3252 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3253 ':',
3254 &len);
3255#endif /* ! (atarist || DOSISH) */
cd39f2b6 3256#endif /* MACOS_TRADITIONAL */
3280af22 3257 if (s < PL_bufend)
491527d0 3258 s++;
84486fc6 3259 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3260 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3261#ifdef MACOS_TRADITIONAL
3262 if (len && tmpbuf[len - 1] != ':')
3263 tmpbuf[len++] = ':';
3264#else
491527d0 3265 if (len
61ae2fbf 3266#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3267 && tmpbuf[len - 1] != '/'
3268 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3269#endif
3270 )
84486fc6
GS		 3271 tmpbuf[len++] = '/';
3272 if (len == 2 && tmpbuf[0] == '.')
491527d0 3273 seen_dot = 1;
cd39f2b6 3274#endif
84486fc6 3275 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3276#endif /* !VMS */
3277
3278#ifdef SEARCH_EXTS
84486fc6 3279 len = strlen(tmpbuf);
491527d0
GS		 3280 if (extidx > 0) /* reset after previous loop */
3281 extidx = 0;
3282 do {
3283#endif
84486fc6 3284 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3285 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3286 if (S_ISDIR(PL_statbuf.st_mode)) {
3287 retval = -1;
3288 }
491527d0
GS		 3289#ifdef SEARCH_EXTS
3290 } while ( retval < 0 /* not there */
3291 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3292 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3293 );
3294#endif
3295 if (retval < 0)
3296 continue;
3280af22
NIS		 3297 if (S_ISREG(PL_statbuf.st_mode)
3298 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3299#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3300 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3301#endif
3302 )
3303 {
84486fc6 3304 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3305 break;
3306 }
3307 if (!xfailed)
84486fc6 3308 xfailed = savepv(tmpbuf);
491527d0
GS		 3309 }
3310#ifndef DOSISH
017f25f1
IZ		 3311 if (!xfound && !seen_dot && !xfailed &&
3312 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3313 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3314#endif
3315 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3316 if (!xfound) {
3317 if (flags & 1) { /* do or die? */
cea2e8a9 3318 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3319 (xfailed ? "execute" : "find"),
3320 (xfailed ? xfailed : scriptname),
3321 (xfailed ? "" : " on PATH"),
3322 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3323 }
3324 scriptname = Nullch;
3325 }
491527d0
GS		 3326 if (xfailed)
3327 Safefree(xfailed);
3328 scriptname = xfound;
3329 }
9ccb31f9 3330 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3331}
3332
ba869deb
GS		 3333#ifndef PERL_GET_CONTEXT_DEFINED
3334
3335void *
3336Perl_get_context(void)
3337{
3338#if defined(USE_THREADS) || defined(USE_ITHREADS)
3339# ifdef OLD_PTHREADS_API
3340 pthread_addr_t t;
3341 if (pthread_getspecific(PL_thr_key, &t))
3342 Perl_croak_nocontext("panic: pthread_getspecific");
3343 return (void*)t;
3344# else
c44d3fdb
GS		 3345# ifdef I_MACH_CTHREADS
3346 return (void*)cthread_data(cthread_self());
3347# else
ba869deb
GS		 3348 return (void*)pthread_getspecific(PL_thr_key);
3349# endif
c44d3fdb 3350# endif
ba869deb
GS		 3351#else
3352 return (void*)NULL;
3353#endif
3354}
3355
3356void
3357Perl_set_context(void *t)
3358{
3359#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3360# ifdef I_MACH_CTHREADS
3361 cthread_set_data(cthread_self(), t);
3362# else
ba869deb
GS		 3363 if (pthread_setspecific(PL_thr_key, t))
3364 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3365# endif
ba869deb
GS		 3366#endif
3367}
3368
3369#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3370
11343788 3371#ifdef USE_THREADS
ba869deb 3372
12ca11f6
MB		 3373#ifdef FAKE_THREADS
3374/* Very simplistic scheduler for now */
3375void
3376schedule(void)
3377{
c7848ba1 3378 thr = thr->i.next_run;
12ca11f6
MB		 3379}
3380
3381void
864dbfa3 3382Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3383{
3384 *cp = 0;
3385}
3386
3387void
864dbfa3 3388Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3389{
51dd5992 3390 perl_os_thread t;
12ca11f6
MB		 3391 perl_cond cond = *cp;
3392
3393 if (!cond)
3394 return;
3395 t = cond->thread;
3396 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3397 t->i.next_run = thr->i.next_run;
3398 thr->i.next_run->i.prev_run = t;
3399 t->i.prev_run = thr;
3400 thr->i.next_run = t;
3401 thr->i.wait_queue = 0;
12ca11f6
MB		 3402 /* Remove from the wait queue */
3403 *cp = cond->next;
3404 Safefree(cond);
3405}
3406
3407void
864dbfa3 3408Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3409{
51dd5992 3410 perl_os_thread t;
12ca11f6
MB		 3411 perl_cond cond, cond_next;
3412
3413 for (cond = *cp; cond; cond = cond_next) {
3414 t = cond->thread;
3415 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3416 t->i.next_run = thr->i.next_run;
3417 thr->i.next_run->i.prev_run = t;
3418 t->i.prev_run = thr;
3419 thr->i.next_run = t;
3420 thr->i.wait_queue = 0;
12ca11f6
MB		 3421 /* Remove from the wait queue */
3422 cond_next = cond->next;
3423 Safefree(cond);
3424 }
3425 *cp = 0;
3426}
3427
3428void
864dbfa3 3429Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3430{
3431 perl_cond cond;
3432
c7848ba1 3433 if (thr->i.next_run == thr)
cea2e8a9 3434 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3435
0f15f207 3436 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3437 cond->thread = thr;
3438 cond->next = *cp;
3439 *cp = cond;
c7848ba1 3440 thr->i.wait_queue = cond;
12ca11f6 3441 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3442 thr->i.next_run->i.prev_run = thr->i.prev_run;
3443 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3444}
3445#endif /* FAKE_THREADS */
3446
f93b4edd 3447MAGIC *
864dbfa3 3448Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3449{
3450 MAGIC *mg;
3451
3452 SvUPGRADE(sv, SVt_PVMG);
3453 mg = mg_find(sv, 'm');
3454 if (!mg) {
3455 condpair_t *cp;
3456
3457 New(53, cp, 1, condpair_t);
3458 MUTEX_INIT(&cp->mutex);
3459 COND_INIT(&cp->owner_cond);
3460 COND_INIT(&cp->cond);
3461 cp->owner = 0;
1feb2720 3462 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3463 mg = mg_find(sv, 'm');
3464 if (mg) {
3465 /* someone else beat us to initialising it */
1feb2720 3466 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3467 MUTEX_DESTROY(&cp->mutex);
3468 COND_DESTROY(&cp->owner_cond);
3469 COND_DESTROY(&cp->cond);
3470 Safefree(cp);
3471 }
3472 else {
3473 sv_magic(sv, Nullsv, 'm', 0, 0);
3474 mg = SvMAGIC(sv);
3475 mg->mg_ptr = (char *)cp;
565764a8 3476 mg->mg_len = sizeof(cp);
1feb2720 3477 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3478 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3479 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3480 }
3481 }
3482 return mg;
3483}
a863c7d1
MB		 3484
3485/*
199100c8
MB		 3486 * Make a new perl thread structure using t as a prototype. Some of the
3487 * fields for the new thread are copied from the prototype thread, t,
3488 * so t should not be running in perl at the time this function is
3489 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3490 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3491 */
52e1cb5e 3492struct perl_thread *
864dbfa3 3493Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3494{
c5be433b 3495#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3496 struct perl_thread *thr;
cea2e8a9 3497#endif
a863c7d1 3498 SV *sv;
199100c8
MB		 3499 SV **svp;
3500 I32 i;
3501
79cb57f6 3502 sv = newSVpvn("", 0);
52e1cb5e
JH		 3503 SvGROW(sv, sizeof(struct perl_thread) + 1);
3504 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3505 thr = (Thread) SvPVX(sv);
949ced2d 3506#ifdef DEBUGGING
52e1cb5e 3507 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3508 PL_markstack = 0;
3509 PL_scopestack = 0;
3510 PL_savestack = 0;
3511 PL_retstack = 0;
3512 PL_dirty = 0;
3513 PL_localizing = 0;
949ced2d
GS		 3514 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3515#else
3516 Zero(thr, 1, struct perl_thread);
3517#endif
199100c8
MB		 3518
3519 thr->oursv = sv;
cea2e8a9 3520 init_stacks();
a863c7d1 3521
533c011a 3522 PL_curcop = &PL_compiling;
c5be433b 3523 thr->interp = t->interp;
199100c8 3524 thr->cvcache = newHV();
54b9620d 3525 thr->threadsv = newAV();
a863c7d1 3526 thr->specific = newAV();
79cb57f6 3527 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3528 thr->flags = THRf_R_JOINABLE;
3529 MUTEX_INIT(&thr->mutex);
199100c8 3530
5c831c24 3531 JMPENV_BOOTSTRAP;
533c011a 3532
faef0170 3533 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3534 PL_restartop = 0;
3535
b099ddc0 3536 PL_statname = NEWSV(66,0);
5a844595 3537 PL_errors = newSVpvn("", 0);
b099ddc0 3538 PL_maxscream = -1;
0b94c7bb
GS		 3539 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3540 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3541 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3542 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3543 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3544 PL_regindent = 0;
3545 PL_reginterp_cnt = 0;
3546 PL_lastscream = Nullsv;
3547 PL_screamfirst = 0;
3548 PL_screamnext = 0;
3549 PL_reg_start_tmp = 0;
3550 PL_reg_start_tmpl = 0;
14ed4b74 3551 PL_reg_poscache = Nullch;
b099ddc0
GS		 3552
3553 /* parent thread's data needs to be locked while we make copy */
3554 MUTEX_LOCK(&t->mutex);
3555
14dd3ad8 3556#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3557 PL_protect = t->Tprotect;
14dd3ad8 3558#endif
312caa8e 3559
b099ddc0
GS		 3560 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3561 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3562 PL_curstash = t->Tcurstash; /* always be set to main? */
3563
6b88bc9c 3564 PL_tainted = t->Ttainted;
84fee439
NIS		 3565 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3566 PL_nrs = newSVsv(t->Tnrs);
3567 PL_rs = SvREFCNT_inc(PL_nrs);
3568 PL_last_in_gv = Nullgv;
3569 PL_ofslen = t->Tofslen;
3570 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3571 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3572 PL_chopset = t->Tchopset;
84fee439
NIS		 3573 PL_bodytarget = newSVsv(t->Tbodytarget);
3574 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3575 if (t->Tformtarget == t->Ttoptarget)
3576 PL_formtarget = PL_toptarget;
3577 else
3578 PL_formtarget = PL_bodytarget;
533c011a 3579
54b9620d
MB		 3580 /* Initialise all per-thread SVs that the template thread used */
3581 svp = AvARRAY(t->threadsv);
93965878 3582 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3583 if (*svp && *svp != &PL_sv_undef) {
199100c8 3584 SV *sv = newSVsv(*svp);
54b9620d 3585 av_store(thr->threadsv, i, sv);
533c011a 3586 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3587 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3588 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3589 (IV)i, t, thr));
199100c8
MB		 3590 }
3591 }
940cb80d 3592 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3593
533c011a
NIS		 3594 MUTEX_LOCK(&PL_threads_mutex);
3595 PL_nthreads++;
3596 thr->tid = ++PL_threadnum;
199100c8
MB		 3597 thr->next = t->next;
3598 thr->prev = t;
3599 t->next = thr;
3600 thr->next->prev = thr;
533c011a 3601 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3602
b099ddc0
GS		 3603 /* done copying parent's state */
3604 MUTEX_UNLOCK(&t->mutex);
3605
a863c7d1 3606#ifdef HAVE_THREAD_INTERN
4f63d024 3607 Perl_init_thread_intern(thr);
a863c7d1 3608#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3609 return thr;
3610}
11343788 3611#endif /* USE_THREADS */
760ac839 3612
4d46a988 3613#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3614/*
3615 * This hack is to force load of "huge" support from libm.a
3616 * So it is in perl for (say) POSIX to use.
3617 * Needed for SunOS with Sun's 'acc' for example.
3618 */
65202027 3619NV