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Integrate with Sarathy.
[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
12ae5dfc 90 ptr = (Malloc_t)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
12ae5dfc 134 ptr = (Malloc_t)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;
12ae5dfc 187 ptr = (Malloc_t)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
12ae5dfc
JH		 1003 || (*big == *little &&
1004 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1005 return (char*)big;
1006 return Nullch;
1007 }
378cc40b 1008
cf93c79d 1009 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1010
1011 if (littlelen == 1) {
1012 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1013 /* Know that bigend != big. */
1014 if (bigend[-1] == '\n')
1015 return (char *)(bigend - 1);
1016 return (char *) bigend;
1017 }
1018 s = big;
1019 while (s < bigend) {
1020 if (*s == *little)
1021 return (char *)s;
1022 s++;
1023 }
1024 if (SvTAIL(littlestr))
1025 return (char *) bigend;
1026 return Nullch;
1027 }
1028 if (!littlelen)
1029 return (char*)big; /* Cannot be SvTAIL! */
1030
1031 /* littlelen is 2 */
1032 if (SvTAIL(littlestr) && !multiline) {
1033 if (bigend[-1] == '\n' && bigend[-2] == *little)
1034 return (char*)bigend - 2;
1035 if (bigend[-1] == *little)
1036 return (char*)bigend - 1;
1037 return Nullch;
1038 }
1039 {
1040 /* This should be better than FBM if c1 == c2, and almost
1041 as good otherwise: maybe better since we do less indirection.
1042 And we save a lot of memory by caching no table. */
1043 register unsigned char c1 = little[0];
1044 register unsigned char c2 = little[1];
1045
1046 s = big + 1;
1047 bigend--;
1048 if (c1 != c2) {
1049 while (s <= bigend) {
1050 if (s[0] == c2) {
1051 if (s[-1] == c1)
1052 return (char*)s - 1;
1053 s += 2;
1054 continue;
3fe6f2dc 1055 }
cf93c79d
IZ		 1056 next_chars:
1057 if (s[0] == c1) {
1058 if (s == bigend)
1059 goto check_1char_anchor;
1060 if (s[1] == c2)
1061 return (char*)s;
1062 else {
1063 s++;
1064 goto next_chars;
1065 }
1066 }
1067 else
1068 s += 2;
1069 }
1070 goto check_1char_anchor;
1071 }
1072 /* Now c1 == c2 */
1073 while (s <= bigend) {
1074 if (s[0] == c1) {
1075 if (s[-1] == c1)
1076 return (char*)s - 1;
1077 if (s == bigend)
1078 goto check_1char_anchor;
1079 if (s[1] == c1)
1080 return (char*)s;
1081 s += 3;
02128f11 1082 }
c277df42 1083 else
cf93c79d 1084 s += 2;
c277df42 1085 }
c277df42 1086 }
cf93c79d
IZ		 1087 check_1char_anchor: /* One char and anchor! */
1088 if (SvTAIL(littlestr) && (*bigend == *little))
1089 return (char *)bigend; /* bigend is already decremented. */
1090 return Nullch;
d48672a2 1091 }
cf93c79d 1092 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1093 s = bigend - littlelen;
7506f9c3 1094 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1095 /* Automatically of length > 2 */
1096 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1097 {
bbce6d69 1098 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1099 }
1100 if (s[1] == *little
1101 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1102 {
cf93c79d 1103 return (char*)s + 1; /* how sweet it is */
7506f9c3 1104 }
02128f11
IZ		 1105 return Nullch;
1106 }
cf93c79d
IZ		 1107 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1108 char *b = ninstr((char*)big,(char*)bigend,
1109 (char*)little, (char*)little + littlelen);
1110
1111 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1112 /* Chop \n from littlestr: */
1113 s = bigend - littlelen + 1;
7506f9c3
GS		 1114 if (*s == *little
1115 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1116 {
3fe6f2dc 1117 return (char*)s;
7506f9c3 1118 }
cf93c79d 1119 return Nullch;
a687059c 1120 }
cf93c79d 1121 return b;
a687059c 1122 }
cf93c79d
IZ		 1123
1124 { /* Do actual FBM. */
1125 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1126 register unsigned char *oldlittle;
1127
1128 if (littlelen > bigend - big)
1129 return Nullch;
1130 --littlelen; /* Last char found by table lookup */
1131
1132 s = big + littlelen;
1133 little += littlelen; /* last char */
1134 oldlittle = little;
1135 if (s < bigend) {
1136 register I32 tmp;
1137
1138 top2:
1139 /*SUPPRESS 560*/
7506f9c3 1140 if ((tmp = table[*s])) {
62b28dd9 1141#ifdef POINTERRIGOR
cf93c79d
IZ		 1142 if (bigend - s > tmp) {
1143 s += tmp;
1144 goto top2;
1145 }
bbce6d69 1146 s += tmp;
62b28dd9 1147#else
cf93c79d 1148 if ((s += tmp) < bigend)
62b28dd9 1149 goto top2;
cf93c79d
IZ		 1150#endif
1151 goto check_end;
1152 }
1153 else { /* less expensive than calling strncmp() */
1154 register unsigned char *olds = s;
1155
1156 tmp = littlelen;
1157
1158 while (tmp--) {
1159 if (*--s == *--little)
1160 continue;
cf93c79d
IZ		 1161 s = olds + 1; /* here we pay the price for failure */
1162 little = oldlittle;
1163 if (s < bigend) /* fake up continue to outer loop */
1164 goto top2;
1165 goto check_end;
1166 }
1167 return (char *)s;
a687059c 1168 }
378cc40b 1169 }
cf93c79d
IZ		 1170 check_end:
1171 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1172 && memEQ((char *)(bigend - littlelen),
1173 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1174 return (char*)bigend - littlelen;
1175 return Nullch;
378cc40b 1176 }
378cc40b
LW		 1177}
1178
c277df42
IZ		 1179/* start_shift, end_shift are positive quantities which give offsets
1180 of ends of some substring of bigstr.
1181 If `last' we want the last occurence.
1182 old_posp is the way of communication between consequent calls if
1183 the next call needs to find the .
1184 The initial *old_posp should be -1.
cf93c79d
IZ		 1185
1186 Note that we take into account SvTAIL, so one can get extra
1187 optimizations if _ALL flag is set.
c277df42
IZ		 1188 */
1189
cf93c79d
IZ		 1190/* If SvTAIL is actually due to \Z or \z, this gives false positives
1191 if PL_multiline. In fact if !PL_multiline the autoritative answer
1192 is not supported yet. */
1193
378cc40b 1194char *
864dbfa3 1195Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1196{
5c0ca799 1197 dTHR;
a687059c
LW		 1198 register unsigned char *s, *x;
1199 register unsigned char *big;
79072805
LW		 1200 register I32 pos;
1201 register I32 previous;
1202 register I32 first;
a687059c 1203 register unsigned char *little;
c277df42 1204 register I32 stop_pos;
a687059c 1205 register unsigned char *littleend;
c277df42 1206 I32 found = 0;
378cc40b 1207
c277df42 1208 if (*old_posp == -1
3280af22 1209 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1210 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1211 cant_find:
1212 if ( BmRARE(littlestr) == '\n'
1213 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1214 little = (unsigned char *)(SvPVX(littlestr));
1215 littleend = little + SvCUR(littlestr);
1216 first = *little++;
1217 goto check_tail;
1218 }
378cc40b 1219 return Nullch;
cf93c79d
IZ		 1220 }
1221
463ee0b2 1222 little = (unsigned char *)(SvPVX(littlestr));
79072805 1223 littleend = little + SvCUR(littlestr);
378cc40b 1224 first = *little++;
c277df42 1225 /* The value of pos we can start at: */
79072805 1226 previous = BmPREVIOUS(littlestr);
463ee0b2 1227 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1228 /* The value of pos we can stop at: */
1229 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1230 if (previous + start_shift > stop_pos) {
1231 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1232 goto check_tail;
1233 return Nullch;
1234 }
c277df42 1235 while (pos < previous + start_shift) {
3280af22 1236 if (!(pos += PL_screamnext[pos]))
cf93c79d 1237 goto cant_find;
378cc40b 1238 }
de3bb511 1239#ifdef POINTERRIGOR
bbce6d69 1240 do {
ef64f398 1241 if (pos >= stop_pos) break;
bbce6d69 1242 if (big[pos-previous] != first)
1243 continue;
1244 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1245 if (*s++ != *x++) {
1246 s--;
1247 break;
de3bb511 1248 }
bbce6d69 1249 }
c277df42
IZ		 1250 if (s == littleend) {
1251 *old_posp = pos;
1252 if (!last) return (char *)(big+pos-previous);
1253 found = 1;
1254 }
6b88bc9c 1255 } while ( pos += PL_screamnext[pos] );
c277df42 1256 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1257#else /* !POINTERRIGOR */
1258 big -= previous;
bbce6d69 1259 do {
ef64f398 1260 if (pos >= stop_pos) break;
bbce6d69 1261 if (big[pos] != first)
1262 continue;
1263 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1264 if (*s++ != *x++) {
1265 s--;
1266 break;
378cc40b 1267 }
bbce6d69 1268 }
c277df42
IZ		 1269 if (s == littleend) {
1270 *old_posp = pos;
1271 if (!last) return (char *)(big+pos);
1272 found = 1;
1273 }
3280af22 1274 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1275 if (last && found)
1276 return (char *)(big+(*old_posp));
de3bb511 1277#endif /* POINTERRIGOR */
cf93c79d
IZ		 1278 check_tail:
1279 if (!SvTAIL(littlestr) || (end_shift > 0))
1280 return Nullch;
1281 /* Ignore the trailing "\n". This code is not microoptimized */
1282 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1283 stop_pos = littleend - little; /* Actual littlestr len */
1284 if (stop_pos == 0)
1285 return (char*)big;
1286 big -= stop_pos;
1287 if (*big == first
12ae5dfc
JH		 1288 && ((stop_pos == 1) ||
1289 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1290 return (char*)big;
1291 return Nullch;
8d063cd8
LW		 1292}
1293
79072805 1294I32
864dbfa3 1295Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1296{
bbce6d69 1297 register U8 *a = (U8 *)s1;
1298 register U8 *b = (U8 *)s2;
79072805 1299 while (len--) {
22c35a8c 1300 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1301 return 1;
1302 a++,b++;
1303 }
1304 return 0;
1305}
1306
1307I32
864dbfa3 1308Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1309{
1310 register U8 *a = (U8 *)s1;
1311 register U8 *b = (U8 *)s2;
1312 while (len--) {
22c35a8c 1313 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1314 return 1;
1315 a++,b++;
79072805
LW		 1316 }
1317 return 0;
1318}
1319
8d063cd8
LW		 1320/* copy a string to a safe spot */
1321
954c1994
GS		 1322/*
1323=for apidoc savepv
1324
1325Copy a string to a safe spot. This does not use an SV.
1326
1327=cut
1328*/
1329
8d063cd8 1330char *
864dbfa3 1331Perl_savepv(pTHX_ const char *sv)
8d063cd8 1332{
a687059c 1333 register char *newaddr;
8d063cd8 1334
79072805
LW		 1335 New(902,newaddr,strlen(sv)+1,char);
1336 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1337 return newaddr;
1338}
1339
a687059c
LW		 1340/* same thing but with a known length */
1341
954c1994
GS		 1342/*
1343=for apidoc savepvn
1344
1345Copy a string to a safe spot. The C<len> indicates number of bytes to
1346copy. This does not use an SV.
1347
1348=cut
1349*/
1350
a687059c 1351char *
864dbfa3 1352Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1353{
1354 register char *newaddr;
1355
1356 New(903,newaddr,len+1,char);
79072805 1357 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1358 newaddr[len] = '\0'; /* is now */
1359 return newaddr;
1360}
1361
cea2e8a9 1362/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1363
76e3520e 1364STATIC SV *
cea2e8a9 1365S_mess_alloc(pTHX)
fc36a67e 1366{
e72dc28c 1367 dTHR;
fc36a67e 1368 SV *sv;
1369 XPVMG *any;
1370
e72dc28c
GS		 1371 if (!PL_dirty)
1372 return sv_2mortal(newSVpvn("",0));
1373
0372dbb6
GS		 1374 if (PL_mess_sv)
1375 return PL_mess_sv;
1376
fc36a67e 1377 /* Create as PVMG now, to avoid any upgrading later */
1378 New(905, sv, 1, SV);
1379 Newz(905, any, 1, XPVMG);
1380 SvFLAGS(sv) = SVt_PVMG;
1381 SvANY(sv) = (void*)any;
1382 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1383 PL_mess_sv = sv;
fc36a67e 1384 return sv;
1385}
1386
c5be433b 1387#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1388char *
1389Perl_form_nocontext(const char* pat, ...)
1390{
1391 dTHX;
c5be433b 1392 char *retval;
cea2e8a9
GS		 1393 va_list args;
1394 va_start(args, pat);
c5be433b 1395 retval = vform(pat, &args);
cea2e8a9 1396 va_end(args);
c5be433b 1397 return retval;
cea2e8a9 1398}
c5be433b 1399#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1400
8990e307 1401char *
864dbfa3 1402Perl_form(pTHX_ const char* pat, ...)
8990e307 1403{
c5be433b 1404 char *retval;
46fc3d4c 1405 va_list args;
46fc3d4c 1406 va_start(args, pat);
c5be433b 1407 retval = vform(pat, &args);
46fc3d4c 1408 va_end(args);
c5be433b
GS		 1409 return retval;
1410}
1411
1412char *
1413Perl_vform(pTHX_ const char *pat, va_list *args)
1414{
1415 SV *sv = mess_alloc();
1416 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1417 return SvPVX(sv);
46fc3d4c 1418}
a687059c 1419
5a844595
GS		 1420#if defined(PERL_IMPLICIT_CONTEXT)
1421SV *
1422Perl_mess_nocontext(const char *pat, ...)
1423{
1424 dTHX;
1425 SV *retval;
1426 va_list args;
1427 va_start(args, pat);
1428 retval = vmess(pat, &args);
1429 va_end(args);
1430 return retval;
1431}
1432#endif /* PERL_IMPLICIT_CONTEXT */
1433
06bf62c7 1434SV *
5a844595
GS		 1435Perl_mess(pTHX_ const char *pat, ...)
1436{
1437 SV *retval;
1438 va_list args;
1439 va_start(args, pat);
1440 retval = vmess(pat, &args);
1441 va_end(args);
1442 return retval;
1443}
1444
1445SV *
1446Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1447{
e72dc28c 1448 SV *sv = mess_alloc();
46fc3d4c 1449 static char dgd[] = " during global destruction.\n";
1450
fc36a67e 1451 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1452 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1453 dTHR;
57843af0 1454 if (CopLINE(PL_curcop))
ed094faf
GS		 1455 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1456 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1457 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1458 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1459 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1460 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1461 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1462 line_mode ? "line" : "chunk",
1463 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1464 }
9efbc0eb 1465#ifdef USE_THREADS
e8e6f333
GS		 1466 if (thr->tid)
1467 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1468#endif
515f54a1 1469 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1470 }
06bf62c7 1471 return sv;
a687059c
LW		 1472}
1473
c5be433b
GS		 1474OP *
1475Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1476{
5dc0d613 1477 dTHR;
36477c24 1478 char *message;
3280af22 1479 int was_in_eval = PL_in_eval;
36477c24 1480 HV *stash;
1481 GV *gv;
1482 CV *cv;
06bf62c7
GS		 1483 SV *msv;
1484 STRLEN msglen;
36477c24 1485
bf49b057 1486 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1487 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1488 thr, PL_curstack, PL_mainstack));
36477c24 1489
06bf62c7 1490 if (pat) {
5a844595
GS		 1491 msv = vmess(pat, args);
1492 if (PL_errors && SvCUR(PL_errors)) {
1493 sv_catsv(PL_errors, msv);
1494 message = SvPV(PL_errors, msglen);
1495 SvCUR_set(PL_errors, 0);
1496 }
1497 else
1498 message = SvPV(msv,msglen);
06bf62c7
GS		 1499 }
1500 else {
1501 message = Nullch;
0f79a09d 1502 msglen = 0;
06bf62c7 1503 }
36477c24 1504
bf49b057 1505 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1506 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1507 thr, message, PL_diehook));
3280af22 1508 if (PL_diehook) {
cea2e8a9 1509 /* sv_2cv might call Perl_croak() */
3280af22 1510 SV *olddiehook = PL_diehook;
1738f5c4 1511 ENTER;
3280af22
NIS		 1512 SAVESPTR(PL_diehook);
1513 PL_diehook = Nullsv;
1738f5c4
CS		 1514 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1515 LEAVE;
1516 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1517 dSP;
774d564b 1518 SV *msg;
1519
1520 ENTER;
3a1f2dc9 1521 save_re_context();
79cb57f6 1522 if (message) {
06bf62c7 1523 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1524 SvREADONLY_on(msg);
1525 SAVEFREESV(msg);
1526 }
1527 else {
1528 msg = ERRSV;
1529 }
1738f5c4 1530
e788e7d3 1531 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1532 PUSHMARK(SP);
1738f5c4
CS		 1533 XPUSHs(msg);
1534 PUTBACK;
0cdb2077 1535 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1536 POPSTACK;
774d564b 1537 LEAVE;
1738f5c4 1538 }
36477c24 1539 }
1540
06bf62c7 1541 PL_restartop = die_where(message, msglen);
bf49b057 1542 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1543 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1544 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1545 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1546 JMPENV_JUMP(3);
3280af22 1547 return PL_restartop;
36477c24 1548}
1549
c5be433b 1550#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1551OP *
1552Perl_die_nocontext(const char* pat, ...)
a687059c 1553{
cea2e8a9
GS		 1554 dTHX;
1555 OP *o;
a687059c 1556 va_list args;
cea2e8a9 1557 va_start(args, pat);
c5be433b 1558 o = vdie(pat, &args);
cea2e8a9
GS		 1559 va_end(args);
1560 return o;
1561}
c5be433b 1562#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1563
1564OP *
1565Perl_die(pTHX_ const char* pat, ...)
1566{
1567 OP *o;
1568 va_list args;
1569 va_start(args, pat);
c5be433b 1570 o = vdie(pat, &args);
cea2e8a9
GS		 1571 va_end(args);
1572 return o;
1573}
1574
c5be433b
GS		 1575void
1576Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1577{
1578 dTHR;
de3bb511 1579 char *message;
748a9306
LW		 1580 HV *stash;
1581 GV *gv;
1582 CV *cv;
06bf62c7
GS		 1583 SV *msv;
1584 STRLEN msglen;
a687059c 1585
9983fa3c
GS		 1586 if (pat) {
1587 msv = vmess(pat, args);
1588 if (PL_errors && SvCUR(PL_errors)) {
1589 sv_catsv(PL_errors, msv);
1590 message = SvPV(PL_errors, msglen);
1591 SvCUR_set(PL_errors, 0);
1592 }
1593 else
1594 message = SvPV(msv,msglen);
1595 }
1596 else {
1597 message = Nullch;
1598 msglen = 0;
5a844595 1599 }
5a844595 1600
b900a521
JH		 1601 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1602 PTR2UV(thr), message));
5a844595 1603
3280af22 1604 if (PL_diehook) {
cea2e8a9 1605 /* sv_2cv might call Perl_croak() */
3280af22 1606 SV *olddiehook = PL_diehook;
1738f5c4 1607 ENTER;
3280af22
NIS		 1608 SAVESPTR(PL_diehook);
1609 PL_diehook = Nullsv;
20cec16a 1610 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1611 LEAVE;
1612 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1613 dSP;
774d564b 1614 SV *msg;
1615
1616 ENTER;
3a1f2dc9 1617 save_re_context();
9983fa3c
GS		 1618 if (message) {
1619 msg = newSVpvn(message, msglen);
1620 SvREADONLY_on(msg);
1621 SAVEFREESV(msg);
1622 }
1623 else {
1624 msg = ERRSV;
1625 }
20cec16a 1626
e788e7d3 1627 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1628 PUSHMARK(SP);
1738f5c4 1629 XPUSHs(msg);
20cec16a 1630 PUTBACK;
864dbfa3 1631 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1632 POPSTACK;
774d564b 1633 LEAVE;
20cec16a 1634 }
748a9306 1635 }
3280af22 1636 if (PL_in_eval) {
06bf62c7 1637 PL_restartop = die_where(message, msglen);
6224f72b 1638 JMPENV_JUMP(3);
a0d0e21e 1639 }
d175a3f0
GS		 1640 {
1641#ifdef USE_SFIO
1642 /* SFIO can really mess with your errno */
1643 int e = errno;
1644#endif
bf49b057
GS		 1645 PerlIO *serr = Perl_error_log;
1646
1647 PerlIO_write(serr, message, msglen);
1648 (void)PerlIO_flush(serr);
d175a3f0
GS		 1649#ifdef USE_SFIO
1650 errno = e;
1651#endif
1652 }
f86702cc 1653 my_failure_exit();
a687059c
LW		 1654}
1655
c5be433b 1656#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1657void
cea2e8a9 1658Perl_croak_nocontext(const char *pat, ...)
a687059c 1659{
cea2e8a9 1660 dTHX;
a687059c 1661 va_list args;
cea2e8a9 1662 va_start(args, pat);
c5be433b 1663 vcroak(pat, &args);
cea2e8a9
GS		 1664 /* NOTREACHED */
1665 va_end(args);
1666}
1667#endif /* PERL_IMPLICIT_CONTEXT */
1668
954c1994
GS		 1669/*
1670=for apidoc croak
1671
9983fa3c
GS		 1672This is the XSUB-writer's interface to Perl's C<die> function.
1673Normally use this function the same way you use the C C<printf>
1674function. See C<warn>.
1675
1676If you want to throw an exception object, assign the object to
1677C<$@> and then pass C<Nullch> to croak():
1678
1679 errsv = get_sv("@", TRUE);
1680 sv_setsv(errsv, exception_object);
1681 croak(Nullch);
954c1994
GS		 1682
1683=cut
1684*/
1685
cea2e8a9
GS		 1686void
1687Perl_croak(pTHX_ const char *pat, ...)
1688{
1689 va_list args;
1690 va_start(args, pat);
c5be433b 1691 vcroak(pat, &args);
cea2e8a9
GS		 1692 /* NOTREACHED */
1693 va_end(args);
1694}
1695
c5be433b
GS		 1696void
1697Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1698{
de3bb511 1699 char *message;
748a9306
LW		 1700 HV *stash;
1701 GV *gv;
1702 CV *cv;
06bf62c7
GS		 1703 SV *msv;
1704 STRLEN msglen;
a687059c 1705
5a844595 1706 msv = vmess(pat, args);
06bf62c7 1707 message = SvPV(msv, msglen);
a687059c 1708
3280af22 1709 if (PL_warnhook) {
cea2e8a9 1710 /* sv_2cv might call Perl_warn() */
11343788 1711 dTHR;
3280af22 1712 SV *oldwarnhook = PL_warnhook;
1738f5c4 1713 ENTER;
3280af22
NIS		 1714 SAVESPTR(PL_warnhook);
1715 PL_warnhook = Nullsv;
20cec16a 1716 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1717 LEAVE;
1718 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1719 dSP;
774d564b 1720 SV *msg;
1721
1722 ENTER;
3a1f2dc9 1723 save_re_context();
06bf62c7 1724 msg = newSVpvn(message, msglen);
774d564b 1725 SvREADONLY_on(msg);
1726 SAVEFREESV(msg);
1727
e788e7d3 1728 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1729 PUSHMARK(SP);
774d564b 1730 XPUSHs(msg);
20cec16a 1731 PUTBACK;
864dbfa3 1732 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1733 POPSTACK;
774d564b 1734 LEAVE;
20cec16a 1735 return;
1736 }
748a9306 1737 }
bf49b057
GS		 1738 {
1739 PerlIO *serr = Perl_error_log;
1740
1741 PerlIO_write(serr, message, msglen);
a687059c 1742#ifdef LEAKTEST
bf49b057
GS		 1743 DEBUG_L(*message == '!'
1744 ? (xstat(message[1]=='!'
1745 ? (message[2]=='!' ? 2 : 1)
1746 : 0)
1747 , 0)
1748 : 0);
a687059c 1749#endif
bf49b057
GS		 1750 (void)PerlIO_flush(serr);
1751 }
a687059c 1752}
8d063cd8 1753
c5be433b 1754#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1755void
1756Perl_warn_nocontext(const char *pat, ...)
1757{
1758 dTHX;
1759 va_list args;
1760 va_start(args, pat);
c5be433b 1761 vwarn(pat, &args);
cea2e8a9
GS		 1762 va_end(args);
1763}
1764#endif /* PERL_IMPLICIT_CONTEXT */
1765
954c1994
GS		 1766/*
1767=for apidoc warn
1768
1769This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1770function the same way you use the C C<printf> function. See
1771C<croak>.
1772
1773=cut
1774*/
1775
cea2e8a9
GS		 1776void
1777Perl_warn(pTHX_ const char *pat, ...)
1778{
1779 va_list args;
1780 va_start(args, pat);
c5be433b 1781 vwarn(pat, &args);
cea2e8a9
GS		 1782 va_end(args);
1783}
1784
c5be433b
GS		 1785#if defined(PERL_IMPLICIT_CONTEXT)
1786void
1787Perl_warner_nocontext(U32 err, const char *pat, ...)
1788{
1789 dTHX;
1790 va_list args;
1791 va_start(args, pat);
1792 vwarner(err, pat, &args);
1793 va_end(args);
1794}
1795#endif /* PERL_IMPLICIT_CONTEXT */
1796
599cee73 1797void
864dbfa3 1798Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1799{
1800 va_list args;
c5be433b
GS		 1801 va_start(args, pat);
1802 vwarner(err, pat, &args);
1803 va_end(args);
1804}
1805
1806void
1807Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1808{
1809 dTHR;
599cee73
PM		 1810 char *message;
1811 HV *stash;
1812 GV *gv;
1813 CV *cv;
06bf62c7
GS		 1814 SV *msv;
1815 STRLEN msglen;
599cee73 1816
5a844595 1817 msv = vmess(pat, args);
06bf62c7 1818 message = SvPV(msv, msglen);
599cee73
PM		 1819
1820 if (ckDEAD(err)) {
1821#ifdef USE_THREADS
b900a521 1822 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1823#endif /* USE_THREADS */
1824 if (PL_diehook) {
cea2e8a9 1825 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1826 SV *olddiehook = PL_diehook;
1827 ENTER;
1828 SAVESPTR(PL_diehook);
1829 PL_diehook = Nullsv;
1830 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1831 LEAVE;
1832 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1833 dSP;
1834 SV *msg;
1835
1836 ENTER;
3a1f2dc9 1837 save_re_context();
06bf62c7 1838 msg = newSVpvn(message, msglen);
599cee73
PM		 1839 SvREADONLY_on(msg);
1840 SAVEFREESV(msg);
1841
3a1f2dc9 1842 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1843 PUSHMARK(sp);
1844 XPUSHs(msg);
1845 PUTBACK;
864dbfa3 1846 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1847 POPSTACK;
599cee73
PM		 1848 LEAVE;
1849 }
1850 }
1851 if (PL_in_eval) {
06bf62c7 1852 PL_restartop = die_where(message, msglen);
599cee73
PM		 1853 JMPENV_JUMP(3);
1854 }
bf49b057
GS		 1855 {
1856 PerlIO *serr = Perl_error_log;
1857 PerlIO_write(serr, message, msglen);
1858 (void)PerlIO_flush(serr);
1859 }
599cee73
PM		 1860 my_failure_exit();
1861
1862 }
1863 else {
1864 if (PL_warnhook) {
cea2e8a9 1865 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1866 dTHR;
1867 SV *oldwarnhook = PL_warnhook;
1868 ENTER;
1869 SAVESPTR(PL_warnhook);
1870 PL_warnhook = Nullsv;
1871 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1872 LEAVE;
599cee73
PM		 1873 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1874 dSP;
1875 SV *msg;
1876
1877 ENTER;
3a1f2dc9 1878 save_re_context();
06bf62c7 1879 msg = newSVpvn(message, msglen);
599cee73
PM		 1880 SvREADONLY_on(msg);
1881 SAVEFREESV(msg);
1882
3a1f2dc9 1883 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1884 PUSHMARK(sp);
1885 XPUSHs(msg);
1886 PUTBACK;
864dbfa3 1887 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1888 POPSTACK;
599cee73
PM		 1889 LEAVE;
1890 return;
1891 }
1892 }
bf49b057
GS		 1893 {
1894 PerlIO *serr = Perl_error_log;
1895 PerlIO_write(serr, message, msglen);
599cee73 1896#ifdef LEAKTEST
bf49b057 1897 DEBUG_L(xstat());
599cee73 1898#endif
bf49b057
GS		 1899 (void)PerlIO_flush(serr);
1900 }
599cee73
PM		 1901 }
1902}
1903
a0d0e21e 1904#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1905#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1906void
864dbfa3 1907Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1908{
f2517201
GS		 1909#ifndef PERL_USE_SAFE_PUTENV
1910 /* most putenv()s leak, so we manipulate environ directly */
79072805 1911 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1912
3280af22 1913 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1914 I32 j;
1915 I32 max;
fe14fcc3
LW		 1916 char **tmpenv;
1917
de3bb511 1918 /*SUPPRESS 530*/
fe14fcc3 1919 for (max = i; environ[max]; max++) ;
f2517201
GS		 1920 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1921 for (j=0; j<max; j++) { /* copy environment */
1922 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1923 strcpy(tmpenv[j], environ[j]);
1924 }
fe14fcc3
LW		 1925 tmpenv[max] = Nullch;
1926 environ = tmpenv; /* tell exec where it is now */
1927 }
a687059c 1928 if (!val) {
f2517201 1929 safesysfree(environ[i]);
a687059c
LW		 1930 while (environ[i]) {
1931 environ[i] = environ[i+1];
1932 i++;
1933 }
1934 return;
1935 }
8d063cd8 1936 if (!environ[i]) { /* does not exist yet */
f2517201 1937 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1938 environ[i+1] = Nullch; /* make sure it's null terminated */
1939 }
fe14fcc3 1940 else
f2517201
GS		 1941 safesysfree(environ[i]);
1942 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1943
a687059c 1944 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1945
1946#else /* PERL_USE_SAFE_PUTENV */
1947 char *new_env;
1948
1949 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1950 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1951 (void)putenv(new_env);
1952#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1953}
1954
d308986b
GS		 1955#else /* WIN32 || __CYGWIN__ */
1956#if defined(__CYGWIN__)
1cab015a
EF		 1957/*
1958 * Save environ of perl.exe, currently Cygwin links in separate environ's
1959 * for each exe/dll. Probably should be a member of impure_ptr.
1960 */
1961static char ***Perl_main_environ;
1962
1963EXTERN_C void
1964Perl_my_setenv_init(char ***penviron)
1965{
1966 Perl_main_environ = penviron;
1967}
1968
1969void
0a9fdc5d 1970Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 1971{
1972 /* You can not directly manipulate the environ[] array because
1973 * the routines do some additional work that syncs the Cygwin
1974 * environment with the Windows environment.
1975 */
1976 char *oldstr = environ[setenv_getix(nam)];
1977
1978 if (!val) {
1979 if (!oldstr)
1980 return;
1981 unsetenv(nam);
d702ae42 1982 safesysfree(oldstr);
1cab015a
EF		 1983 return;
1984 }
1985 setenv(nam, val, 1);
1986 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1987 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1988 safesysfree(oldstr);
1cab015a 1989}
3e3baf6d 1990#else /* if WIN32 */
68dc0745 1991
1992void
864dbfa3 1993Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1994{
3e3baf6d
TB		 1995
1996#ifdef USE_WIN32_RTL_ENV
1997
68dc0745 1998 register char *envstr;
1999 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 2000 STRLEN vallen;
2001 char *oldstr = environ[setenv_getix(nam)];
2002
2003 /* putenv() has totally broken semantics in both the Borland
2004 * and Microsoft CRTLs. They either store the passed pointer in
2005 * the environment without making a copy, or make a copy and don't
2006 * free it. And on top of that, they dont free() old entries that
2007 * are being replaced/deleted. This means the caller must
2008 * free any old entries somehow, or we end up with a memory
2009 * leak every time my_setenv() is called. One might think
2010 * one could directly manipulate environ[], like the UNIX code
2011 * above, but direct changes to environ are not allowed when
2012 * calling putenv(), since the RTLs maintain an internal
2013 * *copy* of environ[]. Bad, bad, *bad* stink.
2014 * GSAR 97-06-07
2015 */
68dc0745 2016
3e3baf6d
TB		 2017 if (!val) {
2018 if (!oldstr)
2019 return;
2020 val = "";
2021 vallen = 0;
2022 }
2023 else
2024 vallen = strlen(val);
f2517201 2025 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2026 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2027 (void)PerlEnv_putenv(envstr);
3e3baf6d 2028 if (oldstr)
f2517201 2029 safesysfree(oldstr);
3e3baf6d 2030#ifdef _MSC_VER
f2517201 2031 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2032#endif
2033
2034#else /* !USE_WIN32_RTL_ENV */
2035
ac5c734f
GS		 2036 register char *envstr;
2037 STRLEN len = strlen(nam) + 3;
2038 if (!val) {
2039 val = "";
2040 }
2041 len += strlen(val);
2042 New(904, envstr, len, char);
2043 (void)sprintf(envstr,"%s=%s",nam,val);
2044 (void)PerlEnv_putenv(envstr);
2045 Safefree(envstr);
3e3baf6d
TB		 2046
2047#endif
2048}
2049
2050#endif /* WIN32 */
1cab015a 2051#endif
3e3baf6d
TB		 2052
2053I32
864dbfa3 2054Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2055{
2056 register I32 i, len = strlen(nam);
2057
2058 for (i = 0; environ[i]; i++) {
2059 if (
2060#ifdef WIN32
2061 strnicmp(environ[i],nam,len) == 0
2062#else
2063 strnEQ(environ[i],nam,len)
2064#endif
2065 && environ[i][len] == '=')
2066 break; /* strnEQ must come first to avoid */
2067 } /* potential SEGV's */
2068 return i;
68dc0745 2069}
2070
a0d0e21e 2071#endif /* !VMS */
378cc40b 2072
16d20bd9 2073#ifdef UNLINK_ALL_VERSIONS
79072805 2074I32
864dbfa3 2075Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2076{
79072805 2077 I32 i;
378cc40b 2078
6ad3d225 2079 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2080 return i ? 0 : -1;
2081}
2082#endif
2083
7a3f2258 2084/* this is a drop-in replacement for bcopy() */
85e6fe83 2085#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2086char *
7a3f2258 2087Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2088{
2089 char *retval = to;
2090
7c0587c8
LW		 2091 if (from - to >= 0) {
2092 while (len--)
2093 *to++ = *from++;
2094 }
2095 else {
2096 to += len;
2097 from += len;
2098 while (len--)
faf8582f 2099 *(--to) = *(--from);
7c0587c8 2100 }
378cc40b
LW		 2101 return retval;
2102}
ffed7fef 2103#endif
378cc40b 2104
7a3f2258 2105/* this is a drop-in replacement for memset() */
fc36a67e 2106#ifndef HAS_MEMSET
2107void *
7a3f2258 2108Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2109{
2110 char *retval = loc;
2111
2112 while (len--)
2113 *loc++ = ch;
2114 return retval;
2115}
2116#endif
2117
7a3f2258 2118/* this is a drop-in replacement for bzero() */
7c0587c8 2119#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2120char *
7a3f2258 2121Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2122{
2123 char *retval = loc;
2124
2125 while (len--)
2126 *loc++ = 0;
2127 return retval;
2128}
2129#endif
7c0587c8 2130
7a3f2258 2131/* this is a drop-in replacement for memcmp() */
36477c24 2132#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2133I32
7a3f2258 2134Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2135{
36477c24 2136 register U8 *a = (U8 *)s1;
2137 register U8 *b = (U8 *)s2;
79072805 2138 register I32 tmp;
7c0587c8
LW		 2139
2140 while (len--) {
36477c24 2141 if (tmp = *a++ - *b++)
7c0587c8
LW		 2142 return tmp;
2143 }
2144 return 0;
2145}
36477c24 2146#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2147
fe14fcc3 2148#ifndef HAS_VPRINTF
a687059c 2149
85e6fe83 2150#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2151char *
2152#else
2153int
2154#endif
08105a92 2155vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2156{
2157 FILE fakebuf;
2158
2159 fakebuf._ptr = dest;
2160 fakebuf._cnt = 32767;
35c8bce7
LW		 2161#ifndef _IOSTRG
2162#define _IOSTRG 0
2163#endif
a687059c
LW		 2164 fakebuf._flag = _IOWRT|_IOSTRG;
2165 _doprnt(pat, args, &fakebuf); /* what a kludge */
2166 (void)putc('\0', &fakebuf);
85e6fe83 2167#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2168 return(dest);
2169#else
2170 return 0; /* perl doesn't use return value */
2171#endif
2172}
2173
fe14fcc3 2174#endif /* HAS_VPRINTF */
a687059c
LW		 2175
2176#ifdef MYSWAP
ffed7fef 2177#if BYTEORDER != 0x4321
a687059c 2178short
864dbfa3 2179Perl_my_swap(pTHX_ short s)
a687059c
LW		 2180{
2181#if (BYTEORDER & 1) == 0
2182 short result;
2183
2184 result = ((s & 255) << 8) + ((s >> 8) & 255);
2185 return result;
2186#else
2187 return s;
2188#endif
2189}
2190
2191long
864dbfa3 2192Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2193{
2194 union {
2195 long result;
ffed7fef 2196 char c[sizeof(long)];
a687059c
LW		 2197 } u;
2198
ffed7fef 2199#if BYTEORDER == 0x1234
a687059c
LW		 2200 u.c[0] = (l >> 24) & 255;
2201 u.c[1] = (l >> 16) & 255;
2202 u.c[2] = (l >> 8) & 255;
2203 u.c[3] = l & 255;
2204 return u.result;
2205#else
ffed7fef 2206#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2207 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2208#else
79072805
LW		 2209 register I32 o;
2210 register I32 s;
a687059c 2211
ffed7fef
LW		 2212 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2213 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2214 }
2215 return u.result;
2216#endif
2217#endif
2218}
2219
2220long
864dbfa3 2221Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2222{
2223 union {
2224 long l;
ffed7fef 2225 char c[sizeof(long)];
a687059c
LW		 2226 } u;
2227
ffed7fef 2228#if BYTEORDER == 0x1234
a687059c
LW		 2229 u.c[0] = (l >> 24) & 255;
2230 u.c[1] = (l >> 16) & 255;
2231 u.c[2] = (l >> 8) & 255;
2232 u.c[3] = l & 255;
2233 return u.l;
2234#else
ffed7fef 2235#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2236 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2237#else
79072805
LW		 2238 register I32 o;
2239 register I32 s;
a687059c
LW		 2240
2241 u.l = l;
2242 l = 0;
ffed7fef
LW		 2243 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2244 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2245 }
2246 return l;
2247#endif
2248#endif
2249}
2250
ffed7fef 2251#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2252#endif /* MYSWAP */
2253
2254/*
2255 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2256 * If these functions are defined,
2257 * the BYTEORDER is neither 0x1234 nor 0x4321.
2258 * However, this is not assumed.
2259 * -DWS
2260 */
2261
2262#define HTOV(name,type) \
2263 type \
ba106d47 2264 name (register type n) \
988174c1
LW		 2265 { \
2266 union { \
2267 type value; \
2268 char c[sizeof(type)]; \
2269 } u; \
79072805
LW		 2270 register I32 i; \
2271 register I32 s; \
988174c1
LW		 2272 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2273 u.c[i] = (n >> s) & 0xFF; \
2274 } \
2275 return u.value; \
2276 }
2277
2278#define VTOH(name,type) \
2279 type \
ba106d47 2280 name (register type n) \
988174c1
LW		 2281 { \
2282 union { \
2283 type value; \
2284 char c[sizeof(type)]; \
2285 } u; \
79072805
LW		 2286 register I32 i; \
2287 register I32 s; \
988174c1
LW		 2288 u.value = n; \
2289 n = 0; \
2290 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2291 n += (u.c[i] & 0xFF) << s; \
2292 } \
2293 return n; \
2294 }
2295
2296#if defined(HAS_HTOVS) && !defined(htovs)
2297HTOV(htovs,short)
2298#endif
2299#if defined(HAS_HTOVL) && !defined(htovl)
2300HTOV(htovl,long)
2301#endif
2302#if defined(HAS_VTOHS) && !defined(vtohs)
2303VTOH(vtohs,short)
2304#endif
2305#if defined(HAS_VTOHL) && !defined(vtohl)
2306VTOH(vtohl,long)
2307#endif
a687059c 2308
5f05dabc 2309 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2310#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2311PerlIO *
864dbfa3 2312Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2313{
2314 int p[2];
8ac85365 2315 register I32 This, that;
d8a83dd3 2316 register Pid_t pid;
79072805 2317 SV *sv;
1738f5c4 2318 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2319 I32 did_pipes = 0;
2320 int pp[2];
a687059c 2321
45bc9206 2322 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2323#ifdef OS2
2324 if (doexec) {
23da6c43 2325 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2326 }
2327#endif
8ac85365
NIS		 2328 This = (*mode == 'w');
2329 that = !This;
3280af22 2330 if (doexec && PL_tainting) {
bbce6d69 2331 taint_env();
2332 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2333 }
c2267164
IZ		 2334 if (PerlProc_pipe(p) < 0)
2335 return Nullfp;
e446cec8
IZ		 2336 if (doexec && PerlProc_pipe(pp) >= 0)
2337 did_pipes = 1;
a687059c
LW		 2338 while ((pid = (doexec?vfork():fork())) < 0) {
2339 if (errno != EAGAIN) {
6ad3d225 2340 PerlLIO_close(p[This]);
e446cec8
IZ		 2341 if (did_pipes) {
2342 PerlLIO_close(pp[0]);
2343 PerlLIO_close(pp[1]);
2344 }
a687059c 2345 if (!doexec)
cea2e8a9 2346 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2347 return Nullfp;
2348 }
2349 sleep(5);
2350 }
2351 if (pid == 0) {
79072805
LW		 2352 GV* tmpgv;
2353
30ac6d9b
GS		 2354#undef THIS
2355#undef THAT
a687059c 2356#define THIS that
8ac85365 2357#define THAT This
6ad3d225 2358 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2359 if (did_pipes) {
2360 PerlLIO_close(pp[0]);
2361#if defined(HAS_FCNTL) && defined(F_SETFD)
2362 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2363#endif
2364 }
a687059c 2365 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2366 PerlLIO_dup2(p[THIS], *mode == 'r');
2367 PerlLIO_close(p[THIS]);
a687059c 2368 }
4435c477 2369#ifndef OS2
a687059c 2370 if (doexec) {
a0d0e21e 2371#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2372 int fd;
2373
2374#ifndef NOFILE
2375#define NOFILE 20
2376#endif
6b88bc9c 2377 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2378 if (fd != pp[1])
2379 PerlLIO_close(fd);
ae986130 2380#endif
e446cec8 2381 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2382 PerlProc__exit(1);
a687059c 2383 }
4435c477 2384#endif /* defined OS2 */
de3bb511 2385 /*SUPPRESS 560*/
155aba94 2386 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2387 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2388 PL_forkprocess = 0;
2389 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2390 return Nullfp;
2391#undef THIS
2392#undef THAT
2393 }
62b28dd9 2394 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2395 PerlLIO_close(p[that]);
e446cec8
IZ		 2396 if (did_pipes)
2397 PerlLIO_close(pp[1]);
8ac85365 2398 if (p[that] < p[This]) {
6ad3d225
GS		 2399 PerlLIO_dup2(p[This], p[that]);
2400 PerlLIO_close(p[This]);
8ac85365 2401 p[This] = p[that];
62b28dd9 2402 }
3280af22 2403 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2404 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2405 SvIVX(sv) = pid;
3280af22 2406 PL_forkprocess = pid;
e446cec8
IZ		 2407 if (did_pipes && pid > 0) {
2408 int errkid;
2409 int n = 0, n1;
2410
2411 while (n < sizeof(int)) {
2412 n1 = PerlLIO_read(pp[0],
2413 (void*)(((char*)&errkid)+n),
2414 (sizeof(int)) - n);
2415 if (n1 <= 0)
2416 break;
2417 n += n1;
2418 }
2f96c702
IZ		 2419 PerlLIO_close(pp[0]);
2420 did_pipes = 0;
e446cec8
IZ		 2421 if (n) { /* Error */
2422 if (n != sizeof(int))
cea2e8a9 2423 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2424 errno = errkid; /* Propagate errno from kid */
2425 return Nullfp;
2426 }
2427 }
2428 if (did_pipes)
2429 PerlLIO_close(pp[0]);
8ac85365 2430 return PerlIO_fdopen(p[This], mode);
a687059c 2431}
7c0587c8 2432#else
55497cff 2433#if defined(atarist) || defined(DJGPP)
7c0587c8 2434FILE *popen();
760ac839 2435PerlIO *
864dbfa3 2436Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2437{
760ac839 2438 /* Needs work for PerlIO ! */
55497cff 2439 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2440 PERL_FLUSHALL_FOR_CHILD;
55497cff 2441 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2442}
2443#endif
2444
2445#endif /* !DOSISH */
a687059c 2446
748a9306 2447#ifdef DUMP_FDS
35ff7856 2448void
864dbfa3 2449Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2450{
2451 int fd;
2452 struct stat tmpstatbuf;
2453
bf49b057 2454 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2455 for (fd = 0; fd < 32; fd++) {
6ad3d225 2456 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2457 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2458 }
bf49b057 2459 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2460}
35ff7856 2461#endif /* DUMP_FDS */
ae986130 2462
fe14fcc3 2463#ifndef HAS_DUP2
fec02dd3 2464int
ba106d47 2465dup2(int oldfd, int newfd)
a687059c 2466{
a0d0e21e 2467#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2468 if (oldfd == newfd)
2469 return oldfd;
6ad3d225 2470 PerlLIO_close(newfd);
fec02dd3 2471 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2472#else
fc36a67e 2473#define DUP2_MAX_FDS 256
2474 int fdtmp[DUP2_MAX_FDS];
79072805 2475 I32 fdx = 0;
ae986130
LW		 2476 int fd;
2477
fe14fcc3 2478 if (oldfd == newfd)
fec02dd3 2479 return oldfd;
6ad3d225 2480 PerlLIO_close(newfd);
fc36a67e 2481 /* good enough for low fd's... */
6ad3d225 2482 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2483 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2484 PerlLIO_close(fd);
fc36a67e 2485 fd = -1;
2486 break;
2487 }
ae986130 2488 fdtmp[fdx++] = fd;
fc36a67e 2489 }
ae986130 2490 while (fdx > 0)
6ad3d225 2491 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2492 return fd;
62b28dd9 2493#endif
a687059c
LW		 2494}
2495#endif
2496
ff68c719 2497
2498#ifdef HAS_SIGACTION
2499
2500Sighandler_t
864dbfa3 2501Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2502{
2503 struct sigaction act, oact;
2504
2505 act.sa_handler = handler;
2506 sigemptyset(&act.sa_mask);
2507 act.sa_flags = 0;
2508#ifdef SA_RESTART
2509 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2510#endif
85264bed
CS		 2511#ifdef SA_NOCLDWAIT
2512 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2513 act.sa_flags |= SA_NOCLDWAIT;
2514#endif
ff68c719 2515 if (sigaction(signo, &act, &oact) == -1)
36477c24 2516 return SIG_ERR;
ff68c719 2517 else
36477c24 2518 return oact.sa_handler;
ff68c719 2519}
2520
2521Sighandler_t
864dbfa3 2522Perl_rsignal_state(pTHX_ int signo)
ff68c719 2523{
2524 struct sigaction oact;
2525
2526 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2527 return SIG_ERR;
2528 else
2529 return oact.sa_handler;
2530}
2531
2532int
864dbfa3 2533Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2534{
2535 struct sigaction act;
2536
2537 act.sa_handler = handler;
2538 sigemptyset(&act.sa_mask);
2539 act.sa_flags = 0;
2540#ifdef SA_RESTART
2541 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2542#endif
85264bed
CS		 2543#ifdef SA_NOCLDWAIT
2544 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2545 act.sa_flags |= SA_NOCLDWAIT;
2546#endif
ff68c719 2547 return sigaction(signo, &act, save);
2548}
2549
2550int
864dbfa3 2551Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2552{
2553 return sigaction(signo, save, (struct sigaction *)NULL);
2554}
2555
2556#else /* !HAS_SIGACTION */
2557
2558Sighandler_t
864dbfa3 2559Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2560{
6ad3d225 2561 return PerlProc_signal(signo, handler);
ff68c719 2562}
2563
2564static int sig_trapped;
2565
2566static
2567Signal_t
4e35701f 2568sig_trap(int signo)
ff68c719 2569{
2570 sig_trapped++;
2571}
2572
2573Sighandler_t
864dbfa3 2574Perl_rsignal_state(pTHX_ int signo)
ff68c719 2575{
2576 Sighandler_t oldsig;
2577
2578 sig_trapped = 0;
6ad3d225
GS		 2579 oldsig = PerlProc_signal(signo, sig_trap);
2580 PerlProc_signal(signo, oldsig);
ff68c719 2581 if (sig_trapped)
7766f137 2582 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2583 return oldsig;
2584}
2585
2586int
864dbfa3 2587Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2588{
6ad3d225 2589 *save = PerlProc_signal(signo, handler);
ff68c719 2590 return (*save == SIG_ERR) ? -1 : 0;
2591}
2592
2593int
864dbfa3 2594Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2595{
6ad3d225 2596 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2597}
2598
2599#endif /* !HAS_SIGACTION */
2600
5f05dabc 2601 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2602#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2603I32
864dbfa3 2604Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2605{
ff68c719 2606 Sigsave_t hstat, istat, qstat;
a687059c 2607 int status;
a0d0e21e 2608 SV **svp;
d8a83dd3
JH		 2609 Pid_t pid;
2610 Pid_t pid2;
03136e13
CS		 2611 bool close_failed;
2612 int saved_errno;
2613#ifdef VMS
2614 int saved_vaxc_errno;
2615#endif
22fae026
TM		 2616#ifdef WIN32
2617 int saved_win32_errno;
2618#endif
a687059c 2619
3280af22 2620 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2621 pid = SvIVX(*svp);
a0d0e21e 2622 SvREFCNT_dec(*svp);
3280af22 2623 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2624#ifdef OS2
2625 if (pid == -1) { /* Opened by popen. */
2626 return my_syspclose(ptr);
2627 }
2628#endif
03136e13
CS		 2629 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2630 saved_errno = errno;
2631#ifdef VMS
2632 saved_vaxc_errno = vaxc$errno;
2633#endif
22fae026
TM		 2634#ifdef WIN32
2635 saved_win32_errno = GetLastError();
2636#endif
03136e13 2637 }
7c0587c8 2638#ifdef UTS
6ad3d225 2639 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2640#endif
ff68c719 2641 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2642 rsignal_save(SIGINT, SIG_IGN, &istat);
2643 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2644 do {
1d3434b8
GS		 2645 pid2 = wait4pid(pid, &status, 0);
2646 } while (pid2 == -1 && errno == EINTR);
ff68c719 2647 rsignal_restore(SIGHUP, &hstat);
2648 rsignal_restore(SIGINT, &istat);
2649 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2650 if (close_failed) {
2651 SETERRNO(saved_errno, saved_vaxc_errno);
2652 return -1;
2653 }
1d3434b8 2654 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2655}
4633a7c4
LW		 2656#endif /* !DOSISH */
2657
cd39f2b6 2658#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2659I32
d8a83dd3 2660Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2661{
79072805
LW		 2662 SV *sv;
2663 SV** svp;
fc36a67e 2664 char spid[TYPE_CHARS(int)];
20188a90
LW		 2665
2666 if (!pid)
2667 return -1;
20188a90 2668 if (pid > 0) {
7b0972df 2669 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2670 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2671 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2672 *statusp = SvIVX(*svp);
3280af22 2673 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2674 return pid;
2675 }
2676 }
2677 else {
79072805 2678 HE *entry;
20188a90 2679
3280af22 2680 hv_iterinit(PL_pidstatus);
155aba94 2681 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2682 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2683 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2684 *statusp = SvIVX(sv);
7b0972df 2685 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2686 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2687 return pid;
2688 }
2689 }
79072805 2690#ifdef HAS_WAITPID
367f3c24
IZ		 2691# ifdef HAS_WAITPID_RUNTIME
2692 if (!HAS_WAITPID_RUNTIME)
2693 goto hard_way;
2694# endif
f55ee38a 2695 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2696#endif
2697#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2698 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2699#endif
2700#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2701 hard_way:
a0d0e21e
LW		 2702 {
2703 I32 result;
2704 if (flags)
cea2e8a9 2705 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2706 else {
76e3520e 2707 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2708 pidgone(result,*statusp);
2709 if (result < 0)
2710 *statusp = -1;
2711 }
2712 return result;
a687059c
LW		 2713 }
2714#endif
a687059c 2715}
2d7a9237 2716#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2717
7c0587c8 2718void
de3bb511 2719/*SUPPRESS 590*/
d8a83dd3 2720Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2721{
79072805 2722 register SV *sv;
fc36a67e 2723 char spid[TYPE_CHARS(int)];
a687059c 2724
7b0972df 2725 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2726 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2727 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2728 SvIVX(sv) = status;
20188a90 2729 return;
a687059c
LW		 2730}
2731
55497cff 2732#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2733int pclose();
ddcf38b7
IZ		 2734#ifdef HAS_FORK
2735int /* Cannot prototype with I32
2736 in os2ish.h. */
ba106d47 2737my_syspclose(PerlIO *ptr)
ddcf38b7 2738#else
79072805 2739I32
864dbfa3 2740Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2741#endif
a687059c 2742{
760ac839
LW		 2743 /* Needs work for PerlIO ! */
2744 FILE *f = PerlIO_findFILE(ptr);
2745 I32 result = pclose(f);
933fea7f
GS		 2746#if defined(DJGPP)
2747 result = (result << 8) & 0xff00;
2748#endif
760ac839
LW		 2749 PerlIO_releaseFILE(ptr,f);
2750 return result;
a687059c 2751}
7c0587c8 2752#endif
9f68db38
LW		 2753
2754void
864dbfa3 2755Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2756{
79072805 2757 register I32 todo;
08105a92 2758 register const char *frombase = from;
9f68db38
LW		 2759
2760 if (len == 1) {
08105a92 2761 register const char c = *from;
9f68db38 2762 while (count-- > 0)
5926133d 2763 *to++ = c;
9f68db38
LW		 2764 return;
2765 }
2766 while (count-- > 0) {
2767 for (todo = len; todo > 0; todo--) {
2768 *to++ = *from++;
2769 }
2770 from = frombase;
2771 }
2772}
0f85fab0 2773
463ee0b2 2774U32
65202027 2775Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2776{
2777 long along;
2778
27e2fb84 2779#if CASTFLAGS & 2
34de22dd
LW		 2780# define BIGDOUBLE 2147483648.0
2781 if (f >= BIGDOUBLE)
2782 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2783#endif
0f85fab0
LW		 2784 if (f >= 0.0)
2785 return (unsigned long)f;
2786 along = (long)f;
2787 return (unsigned long)along;
2788}
ed6116ce 2789# undef BIGDOUBLE
5d94fbed 2790
5d94fbed
AD		 2791/* Unfortunately, on some systems the cast_uv() function doesn't
2792 work with the system-supplied definition of ULONG_MAX. The
2793 comparison (f >= ULONG_MAX) always comes out true. It must be a
2794 problem with the compiler constant folding.
2795
2796 In any case, this workaround should be fine on any two's complement
2797 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2798 ccflags.
2799 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2800*/
1eb770ff 2801
2802/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2803 of LONG_(MIN/MAX).
2804 -- Kenneth Albanowski <kjahds@kjahds.com>
2805*/
2806
20cec16a 2807#ifndef MY_UV_MAX
2808# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2809#endif
2810
ed6116ce 2811I32
65202027 2812Perl_cast_i32(pTHX_ NV f)
ed6116ce 2813{
20cec16a 2814 if (f >= I32_MAX)
2815 return (I32) I32_MAX;
2816 if (f <= I32_MIN)
2817 return (I32) I32_MIN;
ed6116ce
LW		 2818 return (I32) f;
2819}
a0d0e21e
LW		 2820
2821IV
65202027 2822Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2823{
25da4f38
IZ		 2824 if (f >= IV_MAX) {
2825 UV uv;
2826
65202027 2827 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2828 return (IV) UV_MAX;
2829 uv = (UV) f;
2830 return (IV)uv;
2831 }
20cec16a 2832 if (f <= IV_MIN)
2833 return (IV) IV_MIN;
a0d0e21e
LW		 2834 return (IV) f;
2835}
5d94fbed
AD		 2836
2837UV
65202027 2838Perl_cast_uv(pTHX_ NV f)
5d94fbed 2839{
20cec16a 2840 if (f >= MY_UV_MAX)
2841 return (UV) MY_UV_MAX;
25da4f38
IZ		 2842 if (f < 0) {
2843 IV iv;
2844
2845 if (f < IV_MIN)
2846 return (UV)IV_MIN;
2847 iv = (IV) f;
2848 return (UV) iv;
2849 }
5d94fbed
AD		 2850 return (UV) f;
2851}
2852
fe14fcc3 2853#ifndef HAS_RENAME
79072805 2854I32
864dbfa3 2855Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2856{
93a17b20
LW		 2857 char *fa = strrchr(a,'/');
2858 char *fb = strrchr(b,'/');
62b28dd9
LW		 2859 struct stat tmpstatbuf1;
2860 struct stat tmpstatbuf2;
46fc3d4c 2861 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2862
2863 if (fa)
2864 fa++;
2865 else
2866 fa = a;
2867 if (fb)
2868 fb++;
2869 else
2870 fb = b;
2871 if (strNE(a,b))
2872 return FALSE;
2873 if (fa == a)
46fc3d4c 2874 sv_setpv(tmpsv, ".");
62b28dd9 2875 else
46fc3d4c 2876 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2877 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2878 return FALSE;
2879 if (fb == b)
46fc3d4c 2880 sv_setpv(tmpsv, ".");
62b28dd9 2881 else
46fc3d4c 2882 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2883 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2884 return FALSE;
2885 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2886 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2887}
fe14fcc3
LW		 2888#endif /* !HAS_RENAME */
2889
9e24b6e2 2890NV
864dbfa3 2891Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2892{
2893 register char *s = start;
9e24b6e2
JH		 2894 register NV rnv = 0.0;
2895 register UV ruv = 0;
252aa082 2896 register bool seenb = FALSE;
9e24b6e2 2897 register bool overflowed = FALSE;
252aa082
JH		 2898
2899 for (; len-- && *s; s++) {
2900 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2901 if (*s == '_' && len && *retlen
2902 && (s[1] == '0' || s[1] == '1'))
2903 {
2904 --len;
2905 ++s;
2906 }
2907 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2908 /* Disallow 0bbb0b0bbb... */
2909 seenb = TRUE;
252aa082
JH		 2910 continue;
2911 }
2912 else {
2913 dTHR;
627300f0
JH		 2914 if (ckWARN(WARN_DIGIT))
2915 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2916 "Illegal binary digit '%c' ignored", *s);
2917 break;
2918 }
9e24b6e2
JH		 2919 }
2920 if (!overflowed) {
2921 register UV xuv = ruv << 1;
2922
2923 if ((xuv >> 1) != ruv) {
2924 dTHR;
2925 overflowed = TRUE;
2926 rnv = (NV) ruv;
627300f0
JH		 2927 if (ckWARN_d(WARN_OVERFLOW))
2928 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2929 "Integer overflow in binary number");
b21ed0a9
GS		 2930 }
2931 else
9e24b6e2
JH		 2932 ruv = xuv | (*s - '0');
2933 }
2934 if (overflowed) {
2935 rnv *= 2;
2936 /* If an NV has not enough bits in its mantissa to
2937 * represent an UV this summing of small low-order numbers
2938 * is a waste of time (because the NV cannot preserve
2939 * the low-order bits anyway): we could just remember when
2940 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2941 * right amount. */
9e24b6e2 2942 rnv += (*s - '0');
f248d071 2943 }
4f19785b 2944 }
9e24b6e2
JH		 2945 if (!overflowed)
2946 rnv = (NV) ruv;
893fe2c2 2947 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2948#if UVSIZE > 4
893fe2c2
JH		 2949 || (!overflowed && ruv > 0xffffffff )
2950#endif
2951 ) {
252aa082 2952 dTHR;
627300f0
JH		 2953 if (ckWARN(WARN_PORTABLE))
2954 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2955 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2956 }
2957 *retlen = s - start;
9e24b6e2 2958 return rnv;
4f19785b 2959}
9e24b6e2
JH		 2960
2961NV
864dbfa3 2962Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2963{
2964 register char *s = start;
9e24b6e2
JH		 2965 register NV rnv = 0.0;
2966 register UV ruv = 0;
2967 register bool overflowed = FALSE;
252aa082
JH		 2968
2969 for (; len-- && *s; s++) {
2970 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 2971 if (*s == '_' && len && *retlen
2972 && (s[1] >= '0' && s[1] <= '7'))
2973 {
2974 --len;
2975 ++s;
2976 }
252aa082 2977 else {
f84f607d
JH		 2978 /* Allow \octal to work the DWIM way (that is, stop scanning
2979 * as soon as non-octal characters are seen, complain only iff
2980 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2981 if (*s == '8' || *s == '9') {
2982 dTHR;
627300f0
JH		 2983 if (ckWARN(WARN_DIGIT))
2984 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2985 "Illegal octal digit '%c' ignored", *s);
2986 }
2987 break;
2988 }
55497cff 2989 }
9e24b6e2 2990 if (!overflowed) {
893fe2c2 2991 register UV xuv = ruv << 3;
9e24b6e2
JH		 2992
2993 if ((xuv >> 3) != ruv) {
2994 dTHR;
2995 overflowed = TRUE;
2996 rnv = (NV) ruv;
627300f0
JH		 2997 if (ckWARN_d(WARN_OVERFLOW))
2998 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2999 "Integer overflow in octal number");
b21ed0a9
GS		 3000 }
3001 else
9e24b6e2
JH		 3002 ruv = xuv | (*s - '0');
3003 }
3004 if (overflowed) {
3005 rnv *= 8.0;
3006 /* If an NV has not enough bits in its mantissa to
3007 * represent an UV this summing of small low-order numbers
3008 * is a waste of time (because the NV cannot preserve
3009 * the low-order bits anyway): we could just remember when
3010 * did we overflow and in the end just multiply rnv by the
3011 * right amount of 8-tuples. */
3012 rnv += (NV)(*s - '0');
3013 }
fe14fcc3 3014 }
9e24b6e2
JH		 3015 if (!overflowed)
3016 rnv = (NV) ruv;
893fe2c2 3017 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3018#if UVSIZE > 4
893fe2c2
JH		 3019 || (!overflowed && ruv > 0xffffffff )
3020#endif
3021 ) {
d008e5eb 3022 dTHR;
627300f0
JH		 3023 if (ckWARN(WARN_PORTABLE))
3024 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3025 "Octal number > 037777777777 non-portable");
d008e5eb 3026 }
fe14fcc3 3027 *retlen = s - start;
9e24b6e2 3028 return rnv;
fe14fcc3
LW		 3029}
3030
9e24b6e2 3031NV
864dbfa3 3032Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3033{
3034 register char *s = start;
9e24b6e2
JH		 3035 register NV rnv = 0.0;
3036 register UV ruv = 0;
252aa082 3037 register bool seenx = FALSE;
9e24b6e2 3038 register bool overflowed = FALSE;
9e24b6e2 3039 char *hexdigit;
fe14fcc3 3040
9e24b6e2
JH		 3041 for (; len-- && *s; s++) {
3042 hexdigit = strchr((char *) PL_hexdigit, *s);
3043 if (!hexdigit) {
b21ed0a9
GS		 3044 if (*s == '_' && len && *retlen && s[1]
3045 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3046 {
3047 --len;
3048 ++s;
3049 }
3050 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3051 /* Disallow 0xxx0x0xxx... */
3052 seenx = TRUE;
252aa082
JH		 3053 continue;
3054 }
a0ed51b3 3055 else {
d008e5eb 3056 dTHR;
627300f0
JH		 3057 if (ckWARN(WARN_DIGIT))
3058 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3059 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3060 break;
3061 }
3062 }
9e24b6e2
JH		 3063 if (!overflowed) {
3064 register UV xuv = ruv << 4;
3065
3066 if ((xuv >> 4) != ruv) {
3067 dTHR;
3068 overflowed = TRUE;
3069 rnv = (NV) ruv;
627300f0
JH		 3070 if (ckWARN_d(WARN_OVERFLOW))
3071 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3072 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3073 }
3074 else
9e24b6e2
JH		 3075 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3076 }
3077 if (overflowed) {
3078 rnv *= 16.0;
3079 /* If an NV has not enough bits in its mantissa to
3080 * represent an UV this summing of small low-order numbers
3081 * is a waste of time (because the NV cannot preserve
3082 * the low-order bits anyway): we could just remember when
3083 * did we overflow and in the end just multiply rnv by the
3084 * right amount of 16-tuples. */
3085 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3086 }
6ff81951 3087 }
9e24b6e2
JH		 3088 if (!overflowed)
3089 rnv = (NV) ruv;
893fe2c2 3090 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3091#if UVSIZE > 4
893fe2c2
JH		 3092 || (!overflowed && ruv > 0xffffffff )
3093#endif
3094 ) {
252aa082 3095 dTHR;
627300f0
JH		 3096 if (ckWARN(WARN_PORTABLE))
3097 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3098 "Hexadecimal number > 0xffffffff non-portable");
3099 }
fe14fcc3 3100 *retlen = s - start;
9e24b6e2 3101 return rnv;
fe14fcc3 3102}
760ac839 3103
491527d0 3104char*
864dbfa3 3105Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3106{
3107 dTHR;
3108 char *xfound = Nullch;
3109 char *xfailed = Nullch;
0f31cffe 3110 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3111 register char *s;
3112 I32 len;
3113 int retval;
3114#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3115# define SEARCH_EXTS ".bat", ".cmd", NULL
3116# define MAX_EXT_LEN 4
3117#endif
3118#ifdef OS2
3119# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3120# define MAX_EXT_LEN 4
3121#endif
3122#ifdef VMS
3123# define SEARCH_EXTS ".pl", ".com", NULL
3124# define MAX_EXT_LEN 4
3125#endif
3126 /* additional extensions to try in each dir if scriptname not found */
3127#ifdef SEARCH_EXTS
3128 char *exts[] = { SEARCH_EXTS };
3129 char **ext = search_ext ? search_ext : exts;
3130 int extidx = 0, i = 0;
3131 char *curext = Nullch;
3132#else
3133# define MAX_EXT_LEN 0
3134#endif
3135
3136 /*
3137 * If dosearch is true and if scriptname does not contain path
3138 * delimiters, search the PATH for scriptname.
3139 *
3140 * If SEARCH_EXTS is also defined, will look for each
3141 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3142 * while searching the PATH.
3143 *
3144 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3145 * proceeds as follows:
3146 * If DOSISH or VMSISH:
3147 * + look for ./scriptname{,.foo,.bar}
3148 * + search the PATH for scriptname{,.foo,.bar}
3149 *
3150 * If !DOSISH:
3151 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3152 * this will not look in '.' if it's not in the PATH)
3153 */
84486fc6 3154 tmpbuf[0] = '\0';
491527d0
GS		 3155
3156#ifdef VMS
3157# ifdef ALWAYS_DEFTYPES
3158 len = strlen(scriptname);
3159 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3160 int hasdir, idx = 0, deftypes = 1;
3161 bool seen_dot = 1;
3162
3163 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3164# else
3165 if (dosearch) {
3166 int hasdir, idx = 0, deftypes = 1;
3167 bool seen_dot = 1;
3168
3169 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3170# endif
3171 /* The first time through, just add SEARCH_EXTS to whatever we
3172 * already have, so we can check for default file types. */
3173 while (deftypes ||
84486fc6 3174 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3175 {
3176 if (deftypes) {
3177 deftypes = 0;
84486fc6 3178 *tmpbuf = '\0';
491527d0 3179 }
84486fc6
GS		 3180 if ((strlen(tmpbuf) + strlen(scriptname)
3181 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3182 continue; /* don't search dir with too-long name */
84486fc6 3183 strcat(tmpbuf, scriptname);
491527d0
GS		 3184#else /* !VMS */
3185
3186#ifdef DOSISH
3187 if (strEQ(scriptname, "-"))
3188 dosearch = 0;
3189 if (dosearch) { /* Look in '.' first. */
3190 char *cur = scriptname;
3191#ifdef SEARCH_EXTS
3192 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3193 while (ext[i])
3194 if (strEQ(ext[i++],curext)) {
3195 extidx = -1; /* already has an ext */
3196 break;
3197 }
3198 do {
3199#endif
3200 DEBUG_p(PerlIO_printf(Perl_debug_log,
3201 "Looking for %s\n",cur));
017f25f1
IZ		 3202 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3203 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3204 dosearch = 0;
3205 scriptname = cur;
3206#ifdef SEARCH_EXTS
3207 break;
3208#endif
3209 }
3210#ifdef SEARCH_EXTS
3211 if (cur == scriptname) {
3212 len = strlen(scriptname);
84486fc6 3213 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3214 break;
84486fc6 3215 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3216 }
3217 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3218 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3219#endif
3220 }
3221#endif
3222
cd39f2b6
JH		 3223#ifdef MACOS_TRADITIONAL
3224 if (dosearch && !strchr(scriptname, ':') &&
3225 (s = PerlEnv_getenv("Commands")))
3226#else
491527d0
GS		 3227 if (dosearch && !strchr(scriptname, '/')
3228#ifdef DOSISH
3229 && !strchr(scriptname, '\\')
3230#endif
cd39f2b6
JH		 3231 && (s = PerlEnv_getenv("PATH")))
3232#endif
3233 {
491527d0
GS		 3234 bool seen_dot = 0;
3235
3280af22
NIS		 3236 PL_bufend = s + strlen(s);
3237 while (s < PL_bufend) {
cd39f2b6
JH		 3238#ifdef MACOS_TRADITIONAL
3239 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3240 ',',
3241 &len);
3242#else
491527d0
GS		 3243#if defined(atarist) || defined(DOSISH)
3244 for (len = 0; *s
3245# ifdef atarist
3246 && *s != ','
3247# endif
3248 && *s != ';'; len++, s++) {
84486fc6
GS		 3249 if (len < sizeof tmpbuf)
3250 tmpbuf[len] = *s;
491527d0 3251 }
84486fc6
GS		 3252 if (len < sizeof tmpbuf)
3253 tmpbuf[len] = '\0';
491527d0 3254#else /* ! (atarist || DOSISH) */
3280af22 3255 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3256 ':',
3257 &len);
3258#endif /* ! (atarist || DOSISH) */
cd39f2b6 3259#endif /* MACOS_TRADITIONAL */
3280af22 3260 if (s < PL_bufend)
491527d0 3261 s++;
84486fc6 3262 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3263 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3264#ifdef MACOS_TRADITIONAL
3265 if (len && tmpbuf[len - 1] != ':')
3266 tmpbuf[len++] = ':';
3267#else
491527d0 3268 if (len
61ae2fbf 3269#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3270 && tmpbuf[len - 1] != '/'
3271 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3272#endif
3273 )
84486fc6
GS		 3274 tmpbuf[len++] = '/';
3275 if (len == 2 && tmpbuf[0] == '.')
491527d0 3276 seen_dot = 1;
cd39f2b6 3277#endif
84486fc6 3278 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3279#endif /* !VMS */
3280
3281#ifdef SEARCH_EXTS
84486fc6 3282 len = strlen(tmpbuf);
491527d0
GS		 3283 if (extidx > 0) /* reset after previous loop */
3284 extidx = 0;
3285 do {
3286#endif
84486fc6 3287 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3288 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3289 if (S_ISDIR(PL_statbuf.st_mode)) {
3290 retval = -1;
3291 }
491527d0
GS		 3292#ifdef SEARCH_EXTS
3293 } while ( retval < 0 /* not there */
3294 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3295 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3296 );
3297#endif
3298 if (retval < 0)
3299 continue;
3280af22
NIS		 3300 if (S_ISREG(PL_statbuf.st_mode)
3301 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3302#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3303 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3304#endif
3305 )
3306 {
84486fc6 3307 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3308 break;
3309 }
3310 if (!xfailed)
84486fc6 3311 xfailed = savepv(tmpbuf);
491527d0
GS		 3312 }
3313#ifndef DOSISH
017f25f1
IZ		 3314 if (!xfound && !seen_dot && !xfailed &&
3315 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3316 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3317#endif
3318 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3319 if (!xfound) {
3320 if (flags & 1) { /* do or die? */
cea2e8a9 3321 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3322 (xfailed ? "execute" : "find"),
3323 (xfailed ? xfailed : scriptname),
3324 (xfailed ? "" : " on PATH"),
3325 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3326 }
3327 scriptname = Nullch;
3328 }
491527d0
GS		 3329 if (xfailed)
3330 Safefree(xfailed);
3331 scriptname = xfound;
3332 }
9ccb31f9 3333 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3334}
3335
ba869deb
GS		 3336#ifndef PERL_GET_CONTEXT_DEFINED
3337
3338void *
3339Perl_get_context(void)
3340{
3341#if defined(USE_THREADS) || defined(USE_ITHREADS)
3342# ifdef OLD_PTHREADS_API
3343 pthread_addr_t t;
3344 if (pthread_getspecific(PL_thr_key, &t))
3345 Perl_croak_nocontext("panic: pthread_getspecific");
3346 return (void*)t;
3347# else
c44d3fdb
GS		 3348# ifdef I_MACH_CTHREADS
3349 return (void*)cthread_data(cthread_self());
3350# else
ba869deb
GS		 3351 return (void*)pthread_getspecific(PL_thr_key);
3352# endif
c44d3fdb 3353# endif
ba869deb
GS		 3354#else
3355 return (void*)NULL;
3356#endif
3357}
3358
3359void
3360Perl_set_context(void *t)
3361{
3362#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3363# ifdef I_MACH_CTHREADS
3364 cthread_set_data(cthread_self(), t);
3365# else
ba869deb
GS		 3366 if (pthread_setspecific(PL_thr_key, t))
3367 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3368# endif
ba869deb
GS		 3369#endif
3370}
3371
3372#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3373
11343788 3374#ifdef USE_THREADS
ba869deb 3375
12ca11f6
MB		 3376#ifdef FAKE_THREADS
3377/* Very simplistic scheduler for now */
3378void
3379schedule(void)
3380{
c7848ba1 3381 thr = thr->i.next_run;
12ca11f6
MB		 3382}
3383
3384void
864dbfa3 3385Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3386{
3387 *cp = 0;
3388}
3389
3390void
864dbfa3 3391Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3392{
51dd5992 3393 perl_os_thread t;
12ca11f6
MB		 3394 perl_cond cond = *cp;
3395
3396 if (!cond)
3397 return;
3398 t = cond->thread;
3399 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3400 t->i.next_run = thr->i.next_run;
3401 thr->i.next_run->i.prev_run = t;
3402 t->i.prev_run = thr;
3403 thr->i.next_run = t;
3404 thr->i.wait_queue = 0;
12ca11f6
MB		 3405 /* Remove from the wait queue */
3406 *cp = cond->next;
3407 Safefree(cond);
3408}
3409
3410void
864dbfa3 3411Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3412{
51dd5992 3413 perl_os_thread t;
12ca11f6
MB		 3414 perl_cond cond, cond_next;
3415
3416 for (cond = *cp; cond; cond = cond_next) {
3417 t = cond->thread;
3418 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3419 t->i.next_run = thr->i.next_run;
3420 thr->i.next_run->i.prev_run = t;
3421 t->i.prev_run = thr;
3422 thr->i.next_run = t;
3423 thr->i.wait_queue = 0;
12ca11f6
MB		 3424 /* Remove from the wait queue */
3425 cond_next = cond->next;
3426 Safefree(cond);
3427 }
3428 *cp = 0;
3429}
3430
3431void
864dbfa3 3432Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3433{
3434 perl_cond cond;
3435
c7848ba1 3436 if (thr->i.next_run == thr)
cea2e8a9 3437 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3438
0f15f207 3439 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3440 cond->thread = thr;
3441 cond->next = *cp;
3442 *cp = cond;
c7848ba1 3443 thr->i.wait_queue = cond;
12ca11f6 3444 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3445 thr->i.next_run->i.prev_run = thr->i.prev_run;
3446 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3447}
3448#endif /* FAKE_THREADS */
3449
f93b4edd 3450MAGIC *
864dbfa3 3451Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3452{
3453 MAGIC *mg;
3454
3455 SvUPGRADE(sv, SVt_PVMG);
3456 mg = mg_find(sv, 'm');
3457 if (!mg) {
3458 condpair_t *cp;
3459
3460 New(53, cp, 1, condpair_t);
3461 MUTEX_INIT(&cp->mutex);
3462 COND_INIT(&cp->owner_cond);
3463 COND_INIT(&cp->cond);
3464 cp->owner = 0;
1feb2720 3465 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3466 mg = mg_find(sv, 'm');
3467 if (mg) {
3468 /* someone else beat us to initialising it */
1feb2720 3469 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3470 MUTEX_DESTROY(&cp->mutex);
3471 COND_DESTROY(&cp->owner_cond);
3472 COND_DESTROY(&cp->cond);
3473 Safefree(cp);
3474 }
3475 else {
3476 sv_magic(sv, Nullsv, 'm', 0, 0);
3477 mg = SvMAGIC(sv);
3478 mg->mg_ptr = (char *)cp;
565764a8 3479 mg->mg_len = sizeof(cp);
1feb2720 3480 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3481 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3482 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3483 }
3484 }
3485 return mg;
3486}
a863c7d1
MB		 3487
3488/*
199100c8
MB		 3489 * Make a new perl thread structure using t as a prototype. Some of the
3490 * fields for the new thread are copied from the prototype thread, t,
3491 * so t should not be running in perl at the time this function is
3492 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3493 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3494 */
52e1cb5e 3495struct perl_thread *
864dbfa3 3496Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3497{
c5be433b 3498#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3499 struct perl_thread *thr;
cea2e8a9 3500#endif
a863c7d1 3501 SV *sv;
199100c8
MB		 3502 SV **svp;
3503 I32 i;
3504
79cb57f6 3505 sv = newSVpvn("", 0);
52e1cb5e
JH		 3506 SvGROW(sv, sizeof(struct perl_thread) + 1);
3507 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3508 thr = (Thread) SvPVX(sv);
949ced2d 3509#ifdef DEBUGGING
52e1cb5e 3510 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3511 PL_markstack = 0;
3512 PL_scopestack = 0;
3513 PL_savestack = 0;
3514 PL_retstack = 0;
3515 PL_dirty = 0;
3516 PL_localizing = 0;
949ced2d
GS		 3517 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3518#else
3519 Zero(thr, 1, struct perl_thread);
3520#endif
199100c8
MB		 3521
3522 thr->oursv = sv;
cea2e8a9 3523 init_stacks();
a863c7d1 3524
533c011a 3525 PL_curcop = &PL_compiling;
c5be433b 3526 thr->interp = t->interp;
199100c8 3527 thr->cvcache = newHV();
54b9620d 3528 thr->threadsv = newAV();
a863c7d1 3529 thr->specific = newAV();
79cb57f6 3530 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3531 thr->flags = THRf_R_JOINABLE;
3532 MUTEX_INIT(&thr->mutex);
199100c8 3533
5c831c24 3534 JMPENV_BOOTSTRAP;
533c011a 3535
faef0170 3536 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3537 PL_restartop = 0;
3538
b099ddc0 3539 PL_statname = NEWSV(66,0);
5a844595 3540 PL_errors = newSVpvn("", 0);
b099ddc0 3541 PL_maxscream = -1;
0b94c7bb
GS		 3542 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3543 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3544 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3545 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3546 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3547 PL_regindent = 0;
3548 PL_reginterp_cnt = 0;
3549 PL_lastscream = Nullsv;
3550 PL_screamfirst = 0;
3551 PL_screamnext = 0;
3552 PL_reg_start_tmp = 0;
3553 PL_reg_start_tmpl = 0;
14ed4b74 3554 PL_reg_poscache = Nullch;
b099ddc0
GS		 3555
3556 /* parent thread's data needs to be locked while we make copy */
3557 MUTEX_LOCK(&t->mutex);
3558
14dd3ad8 3559#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3560 PL_protect = t->Tprotect;
14dd3ad8 3561#endif
312caa8e 3562
b099ddc0
GS		 3563 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3564 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3565 PL_curstash = t->Tcurstash; /* always be set to main? */
3566
6b88bc9c 3567 PL_tainted = t->Ttainted;
84fee439
NIS		 3568 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3569 PL_nrs = newSVsv(t->Tnrs);
3570 PL_rs = SvREFCNT_inc(PL_nrs);
3571 PL_last_in_gv = Nullgv;
3572 PL_ofslen = t->Tofslen;
3573 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3574 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3575 PL_chopset = t->Tchopset;
84fee439
NIS		 3576 PL_bodytarget = newSVsv(t->Tbodytarget);
3577 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3578 if (t->Tformtarget == t->Ttoptarget)
3579 PL_formtarget = PL_toptarget;
3580 else
3581 PL_formtarget = PL_bodytarget;
533c011a 3582
54b9620d
MB		 3583 /* Initialise all per-thread SVs that the template thread used */
3584 svp = AvARRAY(t->threadsv);
93965878 3585 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3586 if (*svp && *svp != &PL_sv_undef) {
199100c8 3587 SV *sv = newSVsv(*svp);
54b9620d 3588 av_store(thr->threadsv, i, sv);
533c011a 3589 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3590 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3591 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3592 (IV)i, t, thr));
199100c8
MB		 3593 }
3594 }
940cb80d 3595 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3596
533c011a
NIS		 3597 MUTEX_LOCK(&PL_threads_mutex);
3598 PL_nthreads++;
3599 thr->tid = ++PL_threadnum;
199100c8
MB		 3600 thr->next = t->next;
3601 thr->prev = t;
3602 t->next = thr;
3603 thr->next->prev = thr;
533c011a 3604 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3605
b099ddc0
GS		 3606 /* done copying parent's state */
3607 MUTEX_UNLOCK(&t->mutex);
3608
a863c7d1 3609#ifdef HAVE_THREAD_INTERN
4f63d024 3610 Perl_init_thread_intern(thr);
a863c7d1 3611#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3612 return thr;
3613}
11343788 3614#endif /* USE_THREADS */
760ac839 3615
4d46a988 3616#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3617/*