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New lightweight Carp has a require. If Carp is used in a __DIE__ handler
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24 23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
bd4080b3 27/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 28#ifdef I_UNISTD
8990e307
LW		 29# include <unistd.h>
30#endif
31
a687059c
LW		 32#ifdef I_VFORK
33# include <vfork.h>
34#endif
35
94b6baf5
AD		 36/* Put this after #includes because fork and vfork prototypes may
37 conflict.
38*/
39#ifndef HAS_VFORK
40# define vfork fork
41#endif
42
fe14fcc3
LW		 43#ifdef I_FCNTL
44# include <fcntl.h>
45#endif
46#ifdef I_SYS_FILE
47# include <sys/file.h>
48#endif
49
ff68c719 50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH		 54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ		 62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS		 69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW		 75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 79 */
80
bd4080b3 81Malloc_t
4f63d024 82Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 83{
bd4080b3 84 Malloc_t ptr;
55497cff 85#ifdef HAS_64K_LIMIT
62b28dd9 86 if (size > 0xffff) {
16cebae2
GS		 87 PerlIO_printf(PerlIO_stderr(),
88 "Allocation too large: %lx\n", size) FLUSH;
89 WITH_THX(my_exit(1));
62b28dd9 90 }
55497cff 91#endif /* HAS_64K_LIMIT */
34de22dd
LW		 92#ifdef DEBUGGING
93 if ((long)size < 0)
4f63d024 94 Perl_croak_nocontext("panic: malloc");
34de22dd 95#endif
6ad3d225 96 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 97#if !(defined(I286) || defined(atarist))
3280af22 98 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 99#else
6b88bc9c 100 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW		 101#endif
102 if (ptr != Nullch)
103 return ptr;
3280af22 104 else if (PL_nomemok)
7c0587c8 105 return Nullch;
8d063cd8 106 else {
22c35a8c 107 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 108 WITH_THX(my_exit(1));
4e35701f 109 return Nullch;
8d063cd8
LW		 110 }
111 /*NOTREACHED*/
112}
113
f2517201 114/* paranoid version of system's realloc() */
8d063cd8 115
bd4080b3 116Malloc_t
4f63d024 117Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 118{
bd4080b3 119 Malloc_t ptr;
ecfc5424 120#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 121 Malloc_t PerlMem_realloc();
ecfc5424 122#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 123
55497cff 124#ifdef HAS_64K_LIMIT
5f05dabc 125 if (size > 0xffff) {
126 PerlIO_printf(PerlIO_stderr(),
127 "Reallocation too large: %lx\n", size) FLUSH;
4f63d024 128 WITH_THX(my_exit(1));
5f05dabc 129 }
55497cff 130#endif /* HAS_64K_LIMIT */
7614df0c 131 if (!size) {
f2517201 132 safesysfree(where);
7614df0c
JD		 133 return NULL;
134 }
135
378cc40b 136 if (!where)
f2517201 137 return safesysmalloc(size);
34de22dd
LW		 138#ifdef DEBUGGING
139 if ((long)size < 0)
4f63d024 140 Perl_croak_nocontext("panic: realloc");
34de22dd 141#endif
7614df0c 142 ptr = PerlMem_realloc(where,size);
79072805
LW		 143
144#if !(defined(I286) || defined(atarist))
145 DEBUG_m( {
3280af22
NIS		 146 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
147 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805
LW		 148 } )
149#else
150 DEBUG_m( {
6b88bc9c
GS		 151 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++);
152 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805 153 } )
8d063cd8 154#endif
79072805 155
8d063cd8
LW		 156 if (ptr != Nullch)
157 return ptr;
3280af22 158 else if (PL_nomemok)
7c0587c8 159 return Nullch;
8d063cd8 160 else {
22c35a8c 161 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 162 WITH_THX(my_exit(1));
4e35701f 163 return Nullch;
8d063cd8
LW		 164 }
165 /*NOTREACHED*/
166}
167
f2517201 168/* safe version of system's free() */
8d063cd8 169
54310121 170Free_t
4f63d024 171Perl_safesysfree(Malloc_t where)
8d063cd8 172{
79072805 173#if !(defined(I286) || defined(atarist))
3280af22 174 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
79072805 175#else
6b88bc9c 176 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
8d063cd8 177#endif
378cc40b 178 if (where) {
de3bb511 179 /*SUPPRESS 701*/
6ad3d225 180 PerlMem_free(where);
378cc40b 181 }
8d063cd8
LW		 182}
183
f2517201 184/* safe version of system's calloc() */
1050c9ca 185
bd4080b3 186Malloc_t
4f63d024 187Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 188{
bd4080b3 189 Malloc_t ptr;
1050c9ca 190
55497cff 191#ifdef HAS_64K_LIMIT
5f05dabc 192 if (size * count > 0xffff) {
193 PerlIO_printf(PerlIO_stderr(),
194 "Allocation too large: %lx\n", size * count) FLUSH;
4f63d024 195 WITH_THX(my_exit(1));
5f05dabc 196 }
55497cff 197#endif /* HAS_64K_LIMIT */
1050c9ca 198#ifdef DEBUGGING
199 if ((long)size < 0 || (long)count < 0)
4f63d024 200 Perl_croak_nocontext("panic: calloc");
1050c9ca 201#endif
0b7c1c42 202 size *= count;
6ad3d225 203 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 204#if !(defined(I286) || defined(atarist))
3280af22 205 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 206#else
6b88bc9c 207 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 208#endif
1050c9ca 209 if (ptr != Nullch) {
210 memset((void*)ptr, 0, size);
211 return ptr;
212 }
3280af22 213 else if (PL_nomemok)
1050c9ca 214 return Nullch;
215 else {
22c35a8c 216 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 217 WITH_THX(my_exit(1));
4e35701f 218 return Nullch;
1050c9ca 219 }
220 /*NOTREACHED*/
221}
222
a687059c
LW		 223#ifdef LEAKTEST
224
8c52afec
IZ		 225struct mem_test_strut {
226 union {
227 long type;
228 char c[2];
229 } u;
230 long size;
231};
232
233# define ALIGN sizeof(struct mem_test_strut)
234
235# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
236# define typeof_chunk(ch) \
237 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
238# define set_typeof_chunk(ch,t) \
239 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
240#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
241 ? MAXYCOUNT - 1 \
242 : ( (size) > 40 \
243 ? ((size) - 1)/8 + 5 \
244 : ((size) - 1)/4))
8d063cd8 245
bd4080b3 246Malloc_t
4f63d024 247Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 248{
8c52afec 249 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 250
8c52afec
IZ		 251 xcount[x] += size;
252 xycount[x][SIZE_TO_Y(size)]++;
253 set_typeof_chunk(where, x);
254 sizeof_chunk(where) = size;
255 return (Malloc_t)(where + ALIGN);
8d063cd8 256}
8d063cd8 257
bd4080b3 258Malloc_t
4f63d024 259Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 260{
8c52afec
IZ		 261 char *where = (char*)wh;
262
263 if (!wh)
264 return safexmalloc(0,size);
265
266 {
267 MEM_SIZE old = sizeof_chunk(where - ALIGN);
268 int t = typeof_chunk(where - ALIGN);
269 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
270
271 xycount[t][SIZE_TO_Y(old)]--;
272 xycount[t][SIZE_TO_Y(size)]++;
273 xcount[t] += size - old;
274 sizeof_chunk(new) = size;
275 return (Malloc_t)(new + ALIGN);
276 }
a687059c
LW		 277}
278
279void
4f63d024 280Perl_safexfree(Malloc_t wh)
a687059c 281{
79072805 282 I32 x;
8c52afec
IZ		 283 char *where = (char*)wh;
284 MEM_SIZE size;
285
a687059c
LW		 286 if (!where)
287 return;
288 where -= ALIGN;
8c52afec 289 size = sizeof_chunk(where);
a687059c 290 x = where[0] + 100 * where[1];
8c52afec
IZ		 291 xcount[x] -= size;
292 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 293 safefree(where);
294}
295
bd4080b3 296Malloc_t
4f63d024 297Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 298{
8c52afec
IZ		 299 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
300 xcount[x] += size;
301 xycount[x][SIZE_TO_Y(size)]++;
302 memset((void*)(where + ALIGN), 0, size * count);
303 set_typeof_chunk(where, x);
304 sizeof_chunk(where) = size;
305 return (Malloc_t)(where + ALIGN);
1050c9ca 306}
307
864dbfa3 308STATIC void
cea2e8a9 309S_xstat(pTHX_ int flag)
8d063cd8 310{
8c52afec
IZ		 311 register I32 i, j, total = 0;
312 I32 subtot[MAXYCOUNT];
8d063cd8 313
8c52afec
IZ		 314 for (j = 0; j < MAXYCOUNT; j++) {
315 subtot[j] = 0;
316 }
317
318 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 319 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 320 total += xcount[i];
321 for (j = 0; j < MAXYCOUNT; j++) {
322 subtot[j] += xycount[i][j];
323 }
324 if (flag == 0
325 ? xcount[i] /* Have something */
326 : (flag == 2
327 ? xcount[i] != lastxcount[i] /* Changed */
328 : xcount[i] > lastxcount[i])) { /* Growed */
329 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
330 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 331 lastxcount[i] = xcount[i];
8c52afec
IZ		 332 for (j = 0; j < MAXYCOUNT; j++) {
333 if ( flag == 0
334 ? xycount[i][j] /* Have something */
335 : (flag == 2
336 ? xycount[i][j] != lastxycount[i][j] /* Changed */
337 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
338 PerlIO_printf(PerlIO_stderr(),"%3ld ",
339 flag == 2
340 ? xycount[i][j] - lastxycount[i][j]
341 : xycount[i][j]);
342 lastxycount[i][j] = xycount[i][j];
343 } else {
344 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
345 }
346 }
347 PerlIO_printf(PerlIO_stderr(), "\n");
348 }
349 }
350 if (flag != 2) {
351 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
352 for (j = 0; j < MAXYCOUNT; j++) {
353 if (subtot[j]) {
354 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
355 } else {
356 PerlIO_printf(PerlIO_stderr(), " . ");
357 }
8d063cd8 358 }
8c52afec 359 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 360 }
8d063cd8 361}
a687059c
LW		 362
363#endif /* LEAKTEST */
8d063cd8
LW		 364
365/* copy a string up to some (non-backslashed) delimiter, if any */
366
367char *
864dbfa3 368Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 369{
fc36a67e 370 register I32 tolen;
371 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 372 if (*from == '\\') {
373 if (from[1] == delim)
374 from++;
fc36a67e 375 else {
376 if (to < toend)
377 *to++ = *from;
378 tolen++;
379 from++;
380 }
378cc40b 381 }
bedebaa5 382 else if (*from == delim)
8d063cd8 383 break;
fc36a67e 384 if (to < toend)
385 *to++ = *from;
8d063cd8 386 }
bedebaa5
CS		 387 if (to < toend)
388 *to = '\0';
fc36a67e 389 *retlen = tolen;
8d063cd8
LW		 390 return from;
391}
392
393/* return ptr to little string in big string, NULL if not found */
378cc40b 394/* This routine was donated by Corey Satten. */
8d063cd8
LW		 395
396char *
864dbfa3 397Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 398{
08105a92 399 register const char *s, *x;
79072805 400 register I32 first;
378cc40b 401
a687059c 402 if (!little)
08105a92 403 return (char*)big;
a687059c 404 first = *little++;
378cc40b 405 if (!first)
08105a92 406 return (char*)big;
378cc40b
LW		 407 while (*big) {
408 if (*big++ != first)
409 continue;
410 for (x=big,s=little; *s; /**/ ) {
411 if (!*x)
412 return Nullch;
413 if (*s++ != *x++) {
414 s--;
415 break;
416 }
417 }
418 if (!*s)
08105a92 419 return (char*)(big-1);
378cc40b
LW		 420 }
421 return Nullch;
422}
8d063cd8 423
a687059c
LW		 424/* same as instr but allow embedded nulls */
425
426char *
864dbfa3 427Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 428{
08105a92 429 register const char *s, *x;
79072805 430 register I32 first = *little;
08105a92 431 register const char *littleend = lend;
378cc40b 432
a0d0e21e 433 if (!first && little >= littleend)
08105a92 434 return (char*)big;
de3bb511
LW		 435 if (bigend - big < littleend - little)
436 return Nullch;
a687059c
LW		 437 bigend -= littleend - little++;
438 while (big <= bigend) {
439 if (*big++ != first)
440 continue;
441 for (x=big,s=little; s < littleend; /**/ ) {
442 if (*s++ != *x++) {
443 s--;
444 break;
445 }
446 }
447 if (s >= littleend)
08105a92 448 return (char*)(big-1);
378cc40b 449 }
a687059c
LW		 450 return Nullch;
451}
452
453/* reverse of the above--find last substring */
454
455char *
864dbfa3 456Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 457{
08105a92
GS		 458 register const char *bigbeg;
459 register const char *s, *x;
79072805 460 register I32 first = *little;
08105a92 461 register const char *littleend = lend;
a687059c 462
a0d0e21e 463 if (!first && little >= littleend)
08105a92 464 return (char*)bigend;
a687059c
LW		 465 bigbeg = big;
466 big = bigend - (littleend - little++);
467 while (big >= bigbeg) {
468 if (*big-- != first)
469 continue;
470 for (x=big+2,s=little; s < littleend; /**/ ) {
471 if (*s++ != *x++) {
472 s--;
473 break;
474 }
475 }
476 if (s >= littleend)
08105a92 477 return (char*)(big+1);
378cc40b 478 }
a687059c 479 return Nullch;
378cc40b 480}
a687059c 481
bbce6d69 482/*
483 * Set up for a new ctype locale.
484 */
55497cff 485void
864dbfa3 486Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 487{
36477c24 488#ifdef USE_LOCALE_CTYPE
489
bbce6d69 490 int i;
ef7eada9 491
bbce6d69 492 for (i = 0; i < 256; i++) {
493 if (isUPPER_LC(i))
22c35a8c 494 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 495 else if (isLOWER_LC(i))
22c35a8c 496 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 497 else
22c35a8c 498 PL_fold_locale[i] = i;
bbce6d69 499 }
bbce6d69 500
36477c24 501#endif /* USE_LOCALE_CTYPE */
502}
bbce6d69 503
504/*
505 * Set up for a new collation locale.
506 */
507void
864dbfa3 508Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 509{
36477c24 510#ifdef USE_LOCALE_COLLATE
511
bbce6d69 512 if (! newcoll) {
3280af22
NIS		 513 if (PL_collation_name) {
514 ++PL_collation_ix;
515 Safefree(PL_collation_name);
516 PL_collation_name = NULL;
517 PL_collation_standard = TRUE;
518 PL_collxfrm_base = 0;
519 PL_collxfrm_mult = 2;
bbce6d69 520 }
521 return;
522 }
523
3280af22
NIS		 524 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
525 ++PL_collation_ix;
526 Safefree(PL_collation_name);
527 PL_collation_name = savepv(newcoll);
528 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 529
bbce6d69 530 {
531 /* 2: at most so many chars ('a', 'b'). */
532 /* 50: surely no system expands a char more. */
533#define XFRMBUFSIZE (2 * 50)
534 char xbuf[XFRMBUFSIZE];
535 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
536 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
537 SSize_t mult = fb - fa;
538 if (mult < 1)
cea2e8a9 539 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 540 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
541 PL_collxfrm_mult = mult;
bbce6d69 542 }
bbce6d69 543 }
bbce6d69 544
36477c24 545#endif /* USE_LOCALE_COLLATE */
546}
bbce6d69 547
097ee67d 548void
51371543 549Perl_set_numeric_radix(pTHX)
097ee67d
JH		 550{
551#ifdef USE_LOCALE_NUMERIC
552# ifdef HAS_LOCALECONV
553 struct lconv* lc;
554
555 lc = localeconv();
556 if (lc && lc->decimal_point)
557 /* We assume that decimal separator aka the radix
558 * character is always a single character. If it
559 * ever is a string, this needs to be rethunk. */
560 PL_numeric_radix = *lc->decimal_point;
561 else
562 PL_numeric_radix = 0;
563# endif /* HAS_LOCALECONV */
564#else
565 PL_numeric_radix = 0;
566#endif /* USE_LOCALE_NUMERIC */
567}
568
bbce6d69 569/*
570 * Set up for a new numeric locale.
571 */
572void
864dbfa3 573Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 574{
36477c24 575#ifdef USE_LOCALE_NUMERIC
576
bbce6d69 577 if (! newnum) {
3280af22
NIS		 578 if (PL_numeric_name) {
579 Safefree(PL_numeric_name);
580 PL_numeric_name = NULL;
581 PL_numeric_standard = TRUE;
582 PL_numeric_local = TRUE;
bbce6d69 583 }
584 return;
585 }
586
3280af22
NIS		 587 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
588 Safefree(PL_numeric_name);
589 PL_numeric_name = savepv(newnum);
590 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
591 PL_numeric_local = TRUE;
51371543 592 set_numeric_radix();
bbce6d69 593 }
36477c24 594
595#endif /* USE_LOCALE_NUMERIC */
bbce6d69 596}
597
598void
864dbfa3 599Perl_set_numeric_standard(pTHX)
bbce6d69 600{
5f05dabc 601#ifdef USE_LOCALE_NUMERIC
602
3280af22 603 if (! PL_numeric_standard) {
bbce6d69 604 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 605 PL_numeric_standard = TRUE;
606 PL_numeric_local = FALSE;
bbce6d69 607 }
5f05dabc 608
609#endif /* USE_LOCALE_NUMERIC */
bbce6d69 610}
611
612void
864dbfa3 613Perl_set_numeric_local(pTHX)
bbce6d69 614{
5f05dabc 615#ifdef USE_LOCALE_NUMERIC
616
3280af22
NIS		 617 if (! PL_numeric_local) {
618 setlocale(LC_NUMERIC, PL_numeric_name);
619 PL_numeric_standard = FALSE;
620 PL_numeric_local = TRUE;
51371543 621 set_numeric_radix();
bbce6d69 622 }
bbce6d69 623
36477c24 624#endif /* USE_LOCALE_NUMERIC */
5f05dabc 625}
36477c24 626
36477c24 627/*
628 * Initialize locale awareness.
629 */
f0c5b223 630int
864dbfa3 631Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 632{
633 int ok = 1;
634 /* returns
635 * 1 = set ok or not applicable,
636 * 0 = fallback to C locale,
637 * -1 = fallback to C locale failed
638 */
bbce6d69 639
36477c24 640#ifdef USE_LOCALE
bbce6d69 641
36477c24 642#ifdef USE_LOCALE_CTYPE
bbce6d69 643 char *curctype = NULL;
36477c24 644#endif /* USE_LOCALE_CTYPE */
645#ifdef USE_LOCALE_COLLATE
bbce6d69 646 char *curcoll = NULL;
36477c24 647#endif /* USE_LOCALE_COLLATE */
648#ifdef USE_LOCALE_NUMERIC
bbce6d69 649 char *curnum = NULL;
36477c24 650#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 651#ifdef __GLIBC__
652 char *language = PerlEnv_getenv("LANGUAGE");
653#endif
76e3520e
GS		 654 char *lc_all = PerlEnv_getenv("LC_ALL");
655 char *lang = PerlEnv_getenv("LANG");
bbce6d69 656 bool setlocale_failure = FALSE;
f0c5b223 657
02b32252
CS		 658#ifdef LOCALE_ENVIRON_REQUIRED
659
660 /*
661 * Ultrix setlocale(..., "") fails if there are no environment
662 * variables from which to get a locale name.
663 */
664
665 bool done = FALSE;
666
667#ifdef LC_ALL
668 if (lang) {
669 if (setlocale(LC_ALL, ""))
670 done = TRUE;
671 else
672 setlocale_failure = TRUE;
673 }
0644c9cb 674 if (!setlocale_failure) {
02b32252 675#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 676 if (! (curctype =
677 setlocale(LC_CTYPE,
678 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 679 ? "" : Nullch)))
680 setlocale_failure = TRUE;
681#endif /* USE_LOCALE_CTYPE */
682#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 683 if (! (curcoll =
684 setlocale(LC_COLLATE,
685 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 686 ? "" : Nullch)))
687 setlocale_failure = TRUE;
688#endif /* USE_LOCALE_COLLATE */
689#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 690 if (! (curnum =
691 setlocale(LC_NUMERIC,
692 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 693 ? "" : Nullch)))
694 setlocale_failure = TRUE;
695#endif /* USE_LOCALE_NUMERIC */
696 }
697
0644c9cb 698#endif /* LC_ALL */
02b32252 699
0644c9cb 700#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 701
0644c9cb 702#ifdef LC_ALL
bbce6d69 703 if (! setlocale(LC_ALL, ""))
704 setlocale_failure = TRUE;
0644c9cb 705#endif /* LC_ALL */
bbce6d69 706
0644c9cb 707 if (!setlocale_failure) {
36477c24 708#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 709 if (! (curctype = setlocale(LC_CTYPE, "")))
710 setlocale_failure = TRUE;
36477c24 711#endif /* USE_LOCALE_CTYPE */
712#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 713 if (! (curcoll = setlocale(LC_COLLATE, "")))
714 setlocale_failure = TRUE;
36477c24 715#endif /* USE_LOCALE_COLLATE */
716#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 717 if (! (curnum = setlocale(LC_NUMERIC, "")))
718 setlocale_failure = TRUE;
36477c24 719#endif /* USE_LOCALE_NUMERIC */
0644c9cb 720 }
02b32252 721
5f05dabc 722 if (setlocale_failure) {
723 char *p;
724 bool locwarn = (printwarn > 1 ||
725 printwarn &&
76e3520e 726 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 727
5f05dabc 728 if (locwarn) {
729#ifdef LC_ALL
730
731 PerlIO_printf(PerlIO_stderr(),
732 "perl: warning: Setting locale failed.\n");
733
734#else /* !LC_ALL */
735
ef7eada9 736 PerlIO_printf(PerlIO_stderr(),
bbce6d69 737 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 738#ifdef USE_LOCALE_CTYPE
bbce6d69 739 if (! curctype)
5f05dabc 740 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24 741#endif /* USE_LOCALE_CTYPE */
742#ifdef USE_LOCALE_COLLATE
bbce6d69 743 if (! curcoll)
5f05dabc 744 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24 745#endif /* USE_LOCALE_COLLATE */
746#ifdef USE_LOCALE_NUMERIC
bbce6d69 747 if (! curnum)
5f05dabc 748 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 749#endif /* USE_LOCALE_NUMERIC */
bbce6d69 750 PerlIO_printf(PerlIO_stderr(), "\n");
751
5f05dabc 752#endif /* LC_ALL */
753
760ac839 754 PerlIO_printf(PerlIO_stderr(),
bbce6d69 755 "perl: warning: Please check that your locale settings:\n");
ef7eada9 756
3aeabbed
JH		 757#ifdef __GLIBC__
758 PerlIO_printf(PerlIO_stderr(),
759 "\tLANGUAGE = %c%s%c,\n",
760 language ? '"' : '(',
761 language ? language : "unset",
762 language ? '"' : ')');
763#endif
764
ef7eada9 765 PerlIO_printf(PerlIO_stderr(),
bbce6d69 766 "\tLC_ALL = %c%s%c,\n",
767 lc_all ? '"' : '(',
768 lc_all ? lc_all : "unset",
769 lc_all ? '"' : ')');
5f05dabc 770
771 {
772 char **e;
773 for (e = environ; *e; e++) {
774 if (strnEQ(*e, "LC_", 3)
775 && strnNE(*e, "LC_ALL=", 7)
776 && (p = strchr(*e, '=')))
777 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 778 (int)(p - *e), *e, p + 1);
5f05dabc 779 }
780 }
781
ef7eada9 782 PerlIO_printf(PerlIO_stderr(),
bbce6d69 783 "\tLANG = %c%s%c\n",
5f05dabc 784 lang ? '"' : '(',
bbce6d69 785 lang ? lang : "unset",
786 lang ? '"' : ')');
ef7eada9 787
bbce6d69 788 PerlIO_printf(PerlIO_stderr(),
789 " are supported and installed on your system.\n");
5f05dabc 790 }
ef7eada9 791
5f05dabc 792#ifdef LC_ALL
793
794 if (setlocale(LC_ALL, "C")) {
795 if (locwarn)
796 PerlIO_printf(PerlIO_stderr(),
797 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 798 ok = 0;
ef7eada9 799 }
5f05dabc 800 else {
801 if (locwarn)
802 PerlIO_printf(PerlIO_stderr(),
803 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
804 ok = -1;
805 }
bbce6d69 806
5f05dabc 807#else /* ! LC_ALL */
808
809 if (0
36477c24 810#ifdef USE_LOCALE_CTYPE
5f05dabc 811 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 812#endif /* USE_LOCALE_CTYPE */
813#ifdef USE_LOCALE_COLLATE
5f05dabc 814 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 815#endif /* USE_LOCALE_COLLATE */
816#ifdef USE_LOCALE_NUMERIC
5f05dabc 817 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 818#endif /* USE_LOCALE_NUMERIC */
5f05dabc 819 )
820 {
821 if (locwarn)
bbce6d69 822 PerlIO_printf(PerlIO_stderr(),
5f05dabc 823 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
824 ok = -1;
bbce6d69 825 }
5f05dabc 826
bbce6d69 827#endif /* ! LC_ALL */
5f05dabc 828
829#ifdef USE_LOCALE_CTYPE
830 curctype = setlocale(LC_CTYPE, Nullch);
831#endif /* USE_LOCALE_CTYPE */
832#ifdef USE_LOCALE_COLLATE
833 curcoll = setlocale(LC_COLLATE, Nullch);
834#endif /* USE_LOCALE_COLLATE */
835#ifdef USE_LOCALE_NUMERIC
836 curnum = setlocale(LC_NUMERIC, Nullch);
837#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 838 }
839
36477c24 840#ifdef USE_LOCALE_CTYPE
864dbfa3 841 new_ctype(curctype);
36477c24 842#endif /* USE_LOCALE_CTYPE */
bbce6d69 843
36477c24 844#ifdef USE_LOCALE_COLLATE
864dbfa3 845 new_collate(curcoll);
36477c24 846#endif /* USE_LOCALE_COLLATE */
bbce6d69 847
36477c24 848#ifdef USE_LOCALE_NUMERIC
864dbfa3 849 new_numeric(curnum);
36477c24 850#endif /* USE_LOCALE_NUMERIC */
ef7eada9 851
36477c24 852#endif /* USE_LOCALE */
ef7eada9 853
f0c5b223
TB		 854 return ok;
855}
856
bbce6d69 857/* Backwards compatibility. */
858int
864dbfa3 859Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 860{
864dbfa3 861 return init_i18nl10n(printwarn);
bbce6d69 862}
ef7eada9 863
36477c24 864#ifdef USE_LOCALE_COLLATE
ef7eada9 865
bbce6d69 866/*
867 * mem_collxfrm() is a bit like strxfrm() but with two important
868 * differences. First, it handles embedded NULs. Second, it allocates
869 * a bit more memory than needed for the transformed data itself.
870 * The real transformed data begins at offset sizeof(collationix).
871 * Please see sv_collxfrm() to see how this is used.
872 */
873char *
864dbfa3 874Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 875{
876 char *xbuf;
76e3520e 877 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 878
879 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
880 /* the +1 is for the terminating NUL. */
881
3280af22 882 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 883 New(171, xbuf, xAlloc, char);
bbce6d69 884 if (! xbuf)
885 goto bad;
886
3280af22
NIS		 887 *(U32*)xbuf = PL_collation_ix;
888 xout = sizeof(PL_collation_ix);
bbce6d69 889 for (xin = 0; xin < len; ) {
890 SSize_t xused;
891
892 for (;;) {
76e3520e 893 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 894 if (xused == -1)
895 goto bad;
76e3520e 896 if (xused < xAlloc - xout)
bbce6d69 897 break;
76e3520e
GS		 898 xAlloc = (2 * xAlloc) + 1;
899 Renew(xbuf, xAlloc, char);
bbce6d69 900 if (! xbuf)
901 goto bad;
902 }
ef7eada9 903
bbce6d69 904 xin += strlen(s + xin) + 1;
905 xout += xused;
906
907 /* Embedded NULs are understood but silently skipped
908 * because they make no sense in locale collation. */
909 }
ef7eada9 910
bbce6d69 911 xbuf[xout] = '\0';
3280af22 912 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 913 return xbuf;
914
915 bad:
916 Safefree(xbuf);
917 *xlen = 0;
918 return NULL;
ef7eada9
JH		 919}
920
36477c24 921#endif /* USE_LOCALE_COLLATE */
bbce6d69 922
cf93c79d
IZ		 923#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
924
925/* As a space optimization, we do not compile tables for strings of length
926 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
927 special-cased in fbm_instr().
928
929 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
930
378cc40b 931void
864dbfa3 932Perl_fbm_compile(pTHX_ SV *sv, U32 flags /* not used yet */)
378cc40b 933{
942e002e
GS		 934 register U8 *s;
935 register U8 *table;
79072805 936 register U32 i;
0b71040e 937 STRLEN len;
79072805
LW		 938 I32 rarest = 0;
939 U32 frequency = 256;
940
cf93c79d
IZ		 941 if (flags & FBMcf_TAIL)
942 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 943 s = (U8*)SvPV_force(sv, len);
07f14f54 944 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 945 if (len == 0) /* TAIL might be on on a zero-length string. */
946 return;
02128f11 947 if (len > 2) {
cf93c79d
IZ		 948 I32 mlen = len;
949 unsigned char *sb;
950
951 if (mlen > 255)
952 mlen = 255;
953 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
954 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
955 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
02128f11 956 for (i = 0; i < 256; i++) {
cf93c79d 957 table[i] = mlen;
02128f11 958 }
cf93c79d 959 table[-1] = flags; /* Not used yet */
02128f11 960 i = 0;
cf93c79d
IZ		 961 sb = s - mlen;
962 while (s >= sb) {
963 if (table[*s] == mlen)
964 table[*s] = i;
965 s--, i++;
966 }
378cc40b 967 }
bbce6d69 968 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 969 SvVALID_on(sv);
378cc40b 970
463ee0b2 971 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 972 for (i = 0; i < len; i++) {
22c35a8c 973 if (PL_freq[s[i]] < frequency) {
bbce6d69 974 rarest = i;
22c35a8c 975 frequency = PL_freq[s[i]];
378cc40b
LW		 976 }
977 }
79072805
LW		 978 BmRARE(sv) = s[rarest];
979 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 980 BmUSEFUL(sv) = 100; /* Initial value */
981 if (flags & FBMcf_TAIL)
982 SvTAIL_on(sv);
760ac839 983 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 984}
985
cf93c79d
IZ		 986/* If SvTAIL(littlestr), it has a fake '\n' at end. */
987/* If SvTAIL is actually due to \Z or \z, this gives false positives
988 if multiline */
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) {
1000 check_tail:
1001 if ( SvTAIL(littlestr)
1002 && (bigend - big == littlelen - 1)
1003 && (littlelen == 1
1004 || *big == *little && memEQ(big, little, littlelen - 1)))
1005 return (char*)big;
1006 return Nullch;
1007 }
378cc40b 1008
cf93c79d
IZ		 1009 if (littlelen <= 2) { /* Special-cased */
1010 register char c;
1011
1012 if (littlelen == 1) {
1013 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1014 /* Know that bigend != big. */
1015 if (bigend[-1] == '\n')
1016 return (char *)(bigend - 1);
1017 return (char *) bigend;
1018 }
1019 s = big;
1020 while (s < bigend) {
1021 if (*s == *little)
1022 return (char *)s;
1023 s++;
1024 }
1025 if (SvTAIL(littlestr))
1026 return (char *) bigend;
1027 return Nullch;
1028 }
1029 if (!littlelen)
1030 return (char*)big; /* Cannot be SvTAIL! */
1031
1032 /* littlelen is 2 */
1033 if (SvTAIL(littlestr) && !multiline) {
1034 if (bigend[-1] == '\n' && bigend[-2] == *little)
1035 return (char*)bigend - 2;
1036 if (bigend[-1] == *little)
1037 return (char*)bigend - 1;
1038 return Nullch;
1039 }
1040 {
1041 /* This should be better than FBM if c1 == c2, and almost
1042 as good otherwise: maybe better since we do less indirection.
1043 And we save a lot of memory by caching no table. */
1044 register unsigned char c1 = little[0];
1045 register unsigned char c2 = little[1];
1046
1047 s = big + 1;
1048 bigend--;
1049 if (c1 != c2) {
1050 while (s <= bigend) {
1051 if (s[0] == c2) {
1052 if (s[-1] == c1)
1053 return (char*)s - 1;
1054 s += 2;
1055 continue;
3fe6f2dc 1056 }
cf93c79d
IZ		 1057 next_chars:
1058 if (s[0] == c1) {
1059 if (s == bigend)
1060 goto check_1char_anchor;
1061 if (s[1] == c2)
1062 return (char*)s;
1063 else {
1064 s++;
1065 goto next_chars;
1066 }
1067 }
1068 else
1069 s += 2;
1070 }
1071 goto check_1char_anchor;
1072 }
1073 /* Now c1 == c2 */
1074 while (s <= bigend) {
1075 if (s[0] == c1) {
1076 if (s[-1] == c1)
1077 return (char*)s - 1;
1078 if (s == bigend)
1079 goto check_1char_anchor;
1080 if (s[1] == c1)
1081 return (char*)s;
1082 s += 3;
02128f11 1083 }
c277df42 1084 else
cf93c79d 1085 s += 2;
c277df42 1086 }
c277df42 1087 }
cf93c79d
IZ		 1088 check_1char_anchor: /* One char and anchor! */
1089 if (SvTAIL(littlestr) && (*bigend == *little))
1090 return (char *)bigend; /* bigend is already decremented. */
1091 return Nullch;
d48672a2 1092 }
cf93c79d 1093 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1094 s = bigend - littlelen;
cf93c79d 1095 if (s >= big
02128f11 1096 && bigend[-1] == '\n'
cf93c79d
IZ		 1097 && *s == *little
1098 /* Automatically of length > 2 */
1099 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
bbce6d69 1100 return (char*)s; /* how sweet it is */
cf93c79d
IZ		 1101 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1102 littlelen - 2))
1103 return (char*)s + 1; /* how sweet it is */
02128f11
IZ		 1104 return Nullch;
1105 }
cf93c79d
IZ		 1106 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1107 char *b = ninstr((char*)big,(char*)bigend,
1108 (char*)little, (char*)little + littlelen);
1109
1110 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1111 /* Chop \n from littlestr: */
1112 s = bigend - littlelen + 1;
1113 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1114 littlelen - 2))
3fe6f2dc 1115 return (char*)s;
cf93c79d 1116 return Nullch;
a687059c 1117 }
cf93c79d 1118 return b;
a687059c 1119 }
cf93c79d
IZ		 1120
1121 { /* Do actual FBM. */
1122 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1123 register unsigned char *oldlittle;
1124
1125 if (littlelen > bigend - big)
1126 return Nullch;
1127 --littlelen; /* Last char found by table lookup */
1128
1129 s = big + littlelen;
1130 little += littlelen; /* last char */
1131 oldlittle = little;
1132 if (s < bigend) {
1133 register I32 tmp;
1134
1135 top2:
1136 /*SUPPRESS 560*/
1137 if (tmp = table[*s]) {
62b28dd9 1138#ifdef POINTERRIGOR
cf93c79d
IZ		 1139 if (bigend - s > tmp) {
1140 s += tmp;
1141 goto top2;
1142 }
bbce6d69 1143 s += tmp;
62b28dd9 1144#else
cf93c79d 1145 if ((s += tmp) < bigend)
62b28dd9 1146 goto top2;
cf93c79d
IZ		 1147#endif
1148 goto check_end;
1149 }
1150 else { /* less expensive than calling strncmp() */
1151 register unsigned char *olds = s;
1152
1153 tmp = littlelen;
1154
1155 while (tmp--) {
1156 if (*--s == *--little)
1157 continue;
1158 differ:
1159 s = olds + 1; /* here we pay the price for failure */
1160 little = oldlittle;
1161 if (s < bigend) /* fake up continue to outer loop */
1162 goto top2;
1163 goto check_end;
1164 }
1165 return (char *)s;
a687059c 1166 }
378cc40b 1167 }
cf93c79d
IZ		 1168 check_end:
1169 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1170 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1171 return (char*)bigend - littlelen;
1172 return Nullch;
378cc40b 1173 }
378cc40b
LW		 1174}
1175
c277df42
IZ		 1176/* start_shift, end_shift are positive quantities which give offsets
1177 of ends of some substring of bigstr.
1178 If `last' we want the last occurence.
1179 old_posp is the way of communication between consequent calls if
1180 the next call needs to find the .
1181 The initial *old_posp should be -1.
cf93c79d
IZ		 1182
1183 Note that we take into account SvTAIL, so one can get extra
1184 optimizations if _ALL flag is set.
c277df42
IZ		 1185 */
1186
cf93c79d
IZ		 1187/* If SvTAIL is actually due to \Z or \z, this gives false positives
1188 if PL_multiline. In fact if !PL_multiline the autoritative answer
1189 is not supported yet. */
1190
378cc40b 1191char *
864dbfa3 1192Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1193{
5c0ca799 1194 dTHR;
a687059c
LW		 1195 register unsigned char *s, *x;
1196 register unsigned char *big;
79072805
LW		 1197 register I32 pos;
1198 register I32 previous;
1199 register I32 first;
a687059c 1200 register unsigned char *little;
c277df42 1201 register I32 stop_pos;
a687059c 1202 register unsigned char *littleend;
c277df42 1203 I32 found = 0;
378cc40b 1204
c277df42 1205 if (*old_posp == -1
3280af22 1206 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1207 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1208 cant_find:
1209 if ( BmRARE(littlestr) == '\n'
1210 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1211 little = (unsigned char *)(SvPVX(littlestr));
1212 littleend = little + SvCUR(littlestr);
1213 first = *little++;
1214 goto check_tail;
1215 }
378cc40b 1216 return Nullch;
cf93c79d
IZ		 1217 }
1218
463ee0b2 1219 little = (unsigned char *)(SvPVX(littlestr));
79072805 1220 littleend = little + SvCUR(littlestr);
378cc40b 1221 first = *little++;
c277df42 1222 /* The value of pos we can start at: */
79072805 1223 previous = BmPREVIOUS(littlestr);
463ee0b2 1224 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1225 /* The value of pos we can stop at: */
1226 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1227 if (previous + start_shift > stop_pos) {
1228 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1229 goto check_tail;
1230 return Nullch;
1231 }
c277df42 1232 while (pos < previous + start_shift) {
3280af22 1233 if (!(pos += PL_screamnext[pos]))
cf93c79d 1234 goto cant_find;
378cc40b 1235 }
de3bb511 1236#ifdef POINTERRIGOR
bbce6d69 1237 do {
ef64f398 1238 if (pos >= stop_pos) break;
bbce6d69 1239 if (big[pos-previous] != first)
1240 continue;
1241 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1242 if (*s++ != *x++) {
1243 s--;
1244 break;
de3bb511 1245 }
bbce6d69 1246 }
c277df42
IZ		 1247 if (s == littleend) {
1248 *old_posp = pos;
1249 if (!last) return (char *)(big+pos-previous);
1250 found = 1;
1251 }
6b88bc9c 1252 } while ( pos += PL_screamnext[pos] );
c277df42 1253 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1254#else /* !POINTERRIGOR */
1255 big -= previous;
bbce6d69 1256 do {
ef64f398 1257 if (pos >= stop_pos) break;
bbce6d69 1258 if (big[pos] != first)
1259 continue;
1260 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1261 if (*s++ != *x++) {
1262 s--;
1263 break;
378cc40b 1264 }
bbce6d69 1265 }
c277df42
IZ		 1266 if (s == littleend) {
1267 *old_posp = pos;
1268 if (!last) return (char *)(big+pos);
1269 found = 1;
1270 }
3280af22 1271 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1272 if (last && found)
1273 return (char *)(big+(*old_posp));
de3bb511 1274#endif /* POINTERRIGOR */
cf93c79d
IZ		 1275 check_tail:
1276 if (!SvTAIL(littlestr) || (end_shift > 0))
1277 return Nullch;
1278 /* Ignore the trailing "\n". This code is not microoptimized */
1279 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1280 stop_pos = littleend - little; /* Actual littlestr len */
1281 if (stop_pos == 0)
1282 return (char*)big;
1283 big -= stop_pos;
1284 if (*big == first
1285 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1286 return (char*)big;
1287 return Nullch;
8d063cd8
LW		 1288}
1289
79072805 1290I32
864dbfa3 1291Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1292{
bbce6d69 1293 register U8 *a = (U8 *)s1;
1294 register U8 *b = (U8 *)s2;
79072805 1295 while (len--) {
22c35a8c 1296 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1297 return 1;
1298 a++,b++;
1299 }
1300 return 0;
1301}
1302
1303I32
864dbfa3 1304Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1305{
1306 register U8 *a = (U8 *)s1;
1307 register U8 *b = (U8 *)s2;
1308 while (len--) {
22c35a8c 1309 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1310 return 1;
1311 a++,b++;
79072805
LW		 1312 }
1313 return 0;
1314}
1315
8d063cd8
LW		 1316/* copy a string to a safe spot */
1317
1318char *
864dbfa3 1319Perl_savepv(pTHX_ const char *sv)
8d063cd8 1320{
a687059c 1321 register char *newaddr;
8d063cd8 1322
79072805
LW		 1323 New(902,newaddr,strlen(sv)+1,char);
1324 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1325 return newaddr;
1326}
1327
a687059c
LW		 1328/* same thing but with a known length */
1329
1330char *
864dbfa3 1331Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1332{
1333 register char *newaddr;
1334
1335 New(903,newaddr,len+1,char);
79072805 1336 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1337 newaddr[len] = '\0'; /* is now */
1338 return newaddr;
1339}
1340
cea2e8a9 1341/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1342
76e3520e 1343STATIC SV *
cea2e8a9 1344S_mess_alloc(pTHX)
fc36a67e 1345{
e72dc28c 1346 dTHR;
fc36a67e 1347 SV *sv;
1348 XPVMG *any;
1349
e72dc28c
GS		 1350 if (!PL_dirty)
1351 return sv_2mortal(newSVpvn("",0));
1352
0372dbb6
GS		 1353 if (PL_mess_sv)
1354 return PL_mess_sv;
1355
fc36a67e 1356 /* Create as PVMG now, to avoid any upgrading later */
1357 New(905, sv, 1, SV);
1358 Newz(905, any, 1, XPVMG);
1359 SvFLAGS(sv) = SVt_PVMG;
1360 SvANY(sv) = (void*)any;
1361 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1362 PL_mess_sv = sv;
fc36a67e 1363 return sv;
1364}
1365
c5be433b 1366#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1367char *
1368Perl_form_nocontext(const char* pat, ...)
1369{
1370 dTHX;
c5be433b 1371 char *retval;
cea2e8a9
GS		 1372 va_list args;
1373 va_start(args, pat);
c5be433b 1374 retval = vform(pat, &args);
cea2e8a9 1375 va_end(args);
c5be433b 1376 return retval;
cea2e8a9 1377}
c5be433b 1378#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1379
8990e307 1380char *
864dbfa3 1381Perl_form(pTHX_ const char* pat, ...)
8990e307 1382{
c5be433b 1383 char *retval;
46fc3d4c 1384 va_list args;
46fc3d4c 1385 va_start(args, pat);
c5be433b 1386 retval = vform(pat, &args);
46fc3d4c 1387 va_end(args);
c5be433b
GS		 1388 return retval;
1389}
1390
1391char *
1392Perl_vform(pTHX_ const char *pat, va_list *args)
1393{
1394 SV *sv = mess_alloc();
1395 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1396 return SvPVX(sv);
46fc3d4c 1397}
a687059c 1398
06bf62c7 1399SV *
864dbfa3 1400Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1401{
e72dc28c 1402 SV *sv = mess_alloc();
46fc3d4c 1403 static char dgd[] = " during global destruction.\n";
1404
fc36a67e 1405 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1406 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1407 dTHR;
cf2093f6 1408#ifdef IV_IS_QUAD
b9c39e73 1409 if (PL_curcop->cop_line)
cf2093f6
JH		 1410 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1411 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1412#else
b9c39e73 1413 if (PL_curcop->cop_line)
cea2e8a9 1414 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1415 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1416#endif
515f54a1
GS		 1417 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1418 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1419 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cf2093f6
JH		 1420#ifdef IV_IS_QUAD
1421 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1422 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1423 line_mode ? "line" : "chunk",
1424 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1425#else
cea2e8a9 1426 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS		 1427 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1428 line_mode ? "line" : "chunk",
1429 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1430#endif
a687059c 1431 }
9efbc0eb 1432#ifdef USE_THREADS
e8e6f333
GS		 1433 if (thr->tid)
1434 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1435#endif
515f54a1 1436 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1437 }
06bf62c7 1438 return sv;
a687059c
LW		 1439}
1440
c5be433b
GS		 1441OP *
1442Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1443{
5dc0d613 1444 dTHR;
36477c24 1445 char *message;
3280af22 1446 int was_in_eval = PL_in_eval;
36477c24 1447 HV *stash;
1448 GV *gv;
1449 CV *cv;
06bf62c7
GS		 1450 SV *msv;
1451 STRLEN msglen;
36477c24 1452
8b73bbec 1453 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1454 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1455 thr, PL_curstack, PL_mainstack));
36477c24 1456
06bf62c7 1457 if (pat) {
cea2e8a9 1458 msv = mess(pat, args);
06bf62c7
GS		 1459 message = SvPV(msv,msglen);
1460 }
1461 else {
1462 message = Nullch;
1463 }
36477c24 1464
8b73bbec 1465 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1466 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1467 thr, message, PL_diehook));
3280af22 1468 if (PL_diehook) {
cea2e8a9 1469 /* sv_2cv might call Perl_croak() */
3280af22 1470 SV *olddiehook = PL_diehook;
1738f5c4 1471 ENTER;
3280af22
NIS		 1472 SAVESPTR(PL_diehook);
1473 PL_diehook = Nullsv;
1738f5c4
CS		 1474 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1475 LEAVE;
1476 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1477 dSP;
774d564b 1478 SV *msg;
1479
1480 ENTER;
79cb57f6 1481 if (message) {
06bf62c7 1482 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1483 SvREADONLY_on(msg);
1484 SAVEFREESV(msg);
1485 }
1486 else {
1487 msg = ERRSV;
1488 }
1738f5c4 1489
e788e7d3 1490 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1491 PUSHMARK(SP);
1738f5c4
CS		 1492 XPUSHs(msg);
1493 PUTBACK;
a7c6d244
NIS		 1494 /* HACK - REVISIT - avoid CATCH_SET(TRUE) in call_sv()
1495 or we come back here due to a JMPENV_JMP() and do
1496 a POPSTACK - but die_where() will have already done
1497 one as it unwound - NI-S 1999/08/14 */
1498 call_sv((SV*)cv, G_DISCARD|G_NOCATCH);
d3acc0f7 1499 POPSTACK;
774d564b 1500 LEAVE;
1738f5c4 1501 }
36477c24 1502 }
1503
06bf62c7 1504 PL_restartop = die_where(message, msglen);
8b73bbec 1505 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1506 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1507 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1508 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1509 JMPENV_JUMP(3);
3280af22 1510 return PL_restartop;
36477c24 1511}
1512
c5be433b 1513#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1514OP *
1515Perl_die_nocontext(const char* pat, ...)
a687059c 1516{
cea2e8a9
GS		 1517 dTHX;
1518 OP *o;
a687059c 1519 va_list args;
cea2e8a9 1520 va_start(args, pat);
c5be433b 1521 o = vdie(pat, &args);
cea2e8a9
GS		 1522 va_end(args);
1523 return o;
1524}
c5be433b 1525#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1526
1527OP *
1528Perl_die(pTHX_ const char* pat, ...)
1529{
1530 OP *o;
1531 va_list args;
1532 va_start(args, pat);
c5be433b 1533 o = vdie(pat, &args);
cea2e8a9
GS		 1534 va_end(args);
1535 return o;
1536}
1537
c5be433b
GS		 1538void
1539Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1540{
1541 dTHR;
de3bb511 1542 char *message;
748a9306
LW		 1543 HV *stash;
1544 GV *gv;
1545 CV *cv;
06bf62c7
GS		 1546 SV *msv;
1547 STRLEN msglen;
a687059c 1548
cea2e8a9 1549 msv = mess(pat, args);
06bf62c7 1550 message = SvPV(msv,msglen);
8b73bbec 1551 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1552 if (PL_diehook) {
cea2e8a9 1553 /* sv_2cv might call Perl_croak() */
3280af22 1554 SV *olddiehook = PL_diehook;
1738f5c4 1555 ENTER;
3280af22
NIS		 1556 SAVESPTR(PL_diehook);
1557 PL_diehook = Nullsv;
20cec16a 1558 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1559 LEAVE;
1560 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1561 dSP;
774d564b 1562 SV *msg;
1563
1564 ENTER;
06bf62c7 1565 msg = newSVpvn(message, msglen);
774d564b 1566 SvREADONLY_on(msg);
1567 SAVEFREESV(msg);
20cec16a 1568
e788e7d3 1569 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1570 PUSHMARK(SP);
1738f5c4 1571 XPUSHs(msg);
20cec16a 1572 PUTBACK;
864dbfa3 1573 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1574 POPSTACK;
774d564b 1575 LEAVE;
20cec16a 1576 }
748a9306 1577 }
3280af22 1578 if (PL_in_eval) {
06bf62c7 1579 PL_restartop = die_where(message, msglen);
6224f72b 1580 JMPENV_JUMP(3);
a0d0e21e 1581 }
d175a3f0
GS		 1582 {
1583#ifdef USE_SFIO
1584 /* SFIO can really mess with your errno */
1585 int e = errno;
1586#endif
06bf62c7 1587 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS		 1588 (void)PerlIO_flush(PerlIO_stderr());
1589#ifdef USE_SFIO
1590 errno = e;
1591#endif
1592 }
f86702cc 1593 my_failure_exit();
a687059c
LW		 1594}
1595
c5be433b 1596#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1597void
cea2e8a9 1598Perl_croak_nocontext(const char *pat, ...)
a687059c 1599{
cea2e8a9 1600 dTHX;
a687059c 1601 va_list args;
cea2e8a9 1602 va_start(args, pat);
c5be433b 1603 vcroak(pat, &args);
cea2e8a9
GS		 1604 /* NOTREACHED */
1605 va_end(args);
1606}
1607#endif /* PERL_IMPLICIT_CONTEXT */
1608
1609void
1610Perl_croak(pTHX_ const char *pat, ...)
1611{
1612 va_list args;
1613 va_start(args, pat);
c5be433b 1614 vcroak(pat, &args);
cea2e8a9
GS		 1615 /* NOTREACHED */
1616 va_end(args);
1617}
1618
c5be433b
GS		 1619void
1620Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1621{
de3bb511 1622 char *message;
748a9306
LW		 1623 HV *stash;
1624 GV *gv;
1625 CV *cv;
06bf62c7
GS		 1626 SV *msv;
1627 STRLEN msglen;
a687059c 1628
cea2e8a9 1629 msv = mess(pat, args);
06bf62c7 1630 message = SvPV(msv, msglen);
a687059c 1631
3280af22 1632 if (PL_warnhook) {
cea2e8a9 1633 /* sv_2cv might call Perl_warn() */
11343788 1634 dTHR;
3280af22 1635 SV *oldwarnhook = PL_warnhook;
1738f5c4 1636 ENTER;
3280af22
NIS		 1637 SAVESPTR(PL_warnhook);
1638 PL_warnhook = Nullsv;
20cec16a 1639 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1640 LEAVE;
1641 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1642 dSP;
774d564b 1643 SV *msg;
1644
1645 ENTER;
06bf62c7 1646 msg = newSVpvn(message, msglen);
774d564b 1647 SvREADONLY_on(msg);
1648 SAVEFREESV(msg);
1649
e788e7d3 1650 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1651 PUSHMARK(SP);
774d564b 1652 XPUSHs(msg);
20cec16a 1653 PUTBACK;
864dbfa3 1654 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1655 POPSTACK;
774d564b 1656 LEAVE;
20cec16a 1657 return;
1658 }
748a9306 1659 }
06bf62c7 1660 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1661#ifdef LEAKTEST
8c52afec
IZ		 1662 DEBUG_L(*message == '!'
1663 ? (xstat(message[1]=='!'
1664 ? (message[2]=='!' ? 2 : 1)
1665 : 0)
1666 , 0)
1667 : 0);
a687059c 1668#endif
20cec16a 1669 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1670}
8d063cd8 1671
c5be433b 1672#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1673void
1674Perl_warn_nocontext(const char *pat, ...)
1675{
1676 dTHX;
1677 va_list args;
1678 va_start(args, pat);
c5be433b 1679 vwarn(pat, &args);
cea2e8a9
GS		 1680 va_end(args);
1681}
1682#endif /* PERL_IMPLICIT_CONTEXT */
1683
1684void
1685Perl_warn(pTHX_ const char *pat, ...)
1686{
1687 va_list args;
1688 va_start(args, pat);
c5be433b 1689 vwarn(pat, &args);
cea2e8a9
GS		 1690 va_end(args);
1691}
1692
c5be433b
GS		 1693#if defined(PERL_IMPLICIT_CONTEXT)
1694void
1695Perl_warner_nocontext(U32 err, const char *pat, ...)
1696{
1697 dTHX;
1698 va_list args;
1699 va_start(args, pat);
1700 vwarner(err, pat, &args);
1701 va_end(args);
1702}
1703#endif /* PERL_IMPLICIT_CONTEXT */
1704
599cee73 1705void
864dbfa3 1706Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1707{
1708 va_list args;
c5be433b
GS		 1709 va_start(args, pat);
1710 vwarner(err, pat, &args);
1711 va_end(args);
1712}
1713
1714void
1715Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1716{
1717 dTHR;
599cee73
PM		 1718 char *message;
1719 HV *stash;
1720 GV *gv;
1721 CV *cv;
06bf62c7
GS		 1722 SV *msv;
1723 STRLEN msglen;
599cee73 1724
c5be433b 1725 msv = mess(pat, args);
06bf62c7 1726 message = SvPV(msv, msglen);
599cee73
PM		 1727
1728 if (ckDEAD(err)) {
1729#ifdef USE_THREADS
d008e5eb 1730 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM		 1731#endif /* USE_THREADS */
1732 if (PL_diehook) {
cea2e8a9 1733 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1734 SV *olddiehook = PL_diehook;
1735 ENTER;
1736 SAVESPTR(PL_diehook);
1737 PL_diehook = Nullsv;
1738 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1739 LEAVE;
1740 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1741 dSP;
1742 SV *msg;
1743
1744 ENTER;
06bf62c7 1745 msg = newSVpvn(message, msglen);
599cee73
PM		 1746 SvREADONLY_on(msg);
1747 SAVEFREESV(msg);
1748
1749 PUSHMARK(sp);
1750 XPUSHs(msg);
1751 PUTBACK;
864dbfa3 1752 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1753
1754 LEAVE;
1755 }
1756 }
1757 if (PL_in_eval) {
06bf62c7 1758 PL_restartop = die_where(message, msglen);
599cee73
PM		 1759 JMPENV_JUMP(3);
1760 }
06bf62c7 1761 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1762 (void)PerlIO_flush(PerlIO_stderr());
1763 my_failure_exit();
1764
1765 }
1766 else {
1767 if (PL_warnhook) {
cea2e8a9 1768 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1769 dTHR;
1770 SV *oldwarnhook = PL_warnhook;
1771 ENTER;
1772 SAVESPTR(PL_warnhook);
1773 PL_warnhook = Nullsv;
1774 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1775 LEAVE;
1776 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1777 dSP;
1778 SV *msg;
1779
1780 ENTER;
06bf62c7 1781 msg = newSVpvn(message, msglen);
599cee73
PM		 1782 SvREADONLY_on(msg);
1783 SAVEFREESV(msg);
1784
1785 PUSHMARK(sp);
1786 XPUSHs(msg);
1787 PUTBACK;
864dbfa3 1788 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1789
1790 LEAVE;
1791 return;
1792 }
1793 }
06bf62c7 1794 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1795#ifdef LEAKTEST
1796 DEBUG_L(xstat());
1797#endif
1798 (void)PerlIO_flush(PerlIO_stderr());
1799 }
1800}
1801
a0d0e21e 1802#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1803#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1804void
864dbfa3 1805Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1806{
f2517201
GS		 1807#ifndef PERL_USE_SAFE_PUTENV
1808 /* most putenv()s leak, so we manipulate environ directly */
79072805 1809 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1810
3280af22 1811 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1812 I32 j;
1813 I32 max;
fe14fcc3
LW		 1814 char **tmpenv;
1815
de3bb511 1816 /*SUPPRESS 530*/
fe14fcc3 1817 for (max = i; environ[max]; max++) ;
f2517201
GS		 1818 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1819 for (j=0; j<max; j++) { /* copy environment */
1820 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1821 strcpy(tmpenv[j], environ[j]);
1822 }
fe14fcc3
LW		 1823 tmpenv[max] = Nullch;
1824 environ = tmpenv; /* tell exec where it is now */
1825 }
a687059c 1826 if (!val) {
f2517201 1827 safesysfree(environ[i]);
a687059c
LW		 1828 while (environ[i]) {
1829 environ[i] = environ[i+1];
1830 i++;
1831 }
1832 return;
1833 }
8d063cd8 1834 if (!environ[i]) { /* does not exist yet */
f2517201 1835 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1836 environ[i+1] = Nullch; /* make sure it's null terminated */
1837 }
fe14fcc3 1838 else
f2517201
GS		 1839 safesysfree(environ[i]);
1840 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1841
62b28dd9 1842#ifndef MSDOS
a687059c 1843 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW		 1844#else
1845 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW		 1846 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1847 * some utilities and applications may break because they only look
1848 * for upper case strings. (Fixed strupr() bug here.)]
1849 */
1850 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW		 1851 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1852#endif /* MSDOS */
f2517201
GS		 1853
1854#else /* PERL_USE_SAFE_PUTENV */
1855 char *new_env;
1856
1857 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1858#ifndef MSDOS
1859 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1860#else
1861 strcpy(new_env,nam); strupr(new_env);
1862 (void)sprintf(new_env + strlen(nam),"=%s",val);
1863#endif
1864 (void)putenv(new_env);
1865#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1866}
1867
2c2d71f5
JH		 1868#else /* WIN32 || CYGWIN */
1869#if defined(CYGWIN)
1cab015a
EF		 1870/*
1871 * Save environ of perl.exe, currently Cygwin links in separate environ's
1872 * for each exe/dll. Probably should be a member of impure_ptr.
1873 */
1874static char ***Perl_main_environ;
1875
1876EXTERN_C void
1877Perl_my_setenv_init(char ***penviron)
1878{
1879 Perl_main_environ = penviron;
1880}
1881
1882void
1883my_setenv(char *nam, char *val)
1884{
1885 /* You can not directly manipulate the environ[] array because
1886 * the routines do some additional work that syncs the Cygwin
1887 * environment with the Windows environment.
1888 */
1889 char *oldstr = environ[setenv_getix(nam)];
1890
1891 if (!val) {
1892 if (!oldstr)
1893 return;
1894 unsetenv(nam);
1895 Safefree(oldstr);
1896 return;
1897 }
1898 setenv(nam, val, 1);
1899 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1900 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1901 Safefree(oldstr);
1902}
3e3baf6d 1903#else /* if WIN32 */
68dc0745 1904
1905void
864dbfa3 1906Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1907{
3e3baf6d
TB		 1908
1909#ifdef USE_WIN32_RTL_ENV
1910
68dc0745 1911 register char *envstr;
1912 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1913 STRLEN vallen;
1914 char *oldstr = environ[setenv_getix(nam)];
1915
1916 /* putenv() has totally broken semantics in both the Borland
1917 * and Microsoft CRTLs. They either store the passed pointer in
1918 * the environment without making a copy, or make a copy and don't
1919 * free it. And on top of that, they dont free() old entries that
1920 * are being replaced/deleted. This means the caller must
1921 * free any old entries somehow, or we end up with a memory
1922 * leak every time my_setenv() is called. One might think
1923 * one could directly manipulate environ[], like the UNIX code
1924 * above, but direct changes to environ are not allowed when
1925 * calling putenv(), since the RTLs maintain an internal
1926 * *copy* of environ[]. Bad, bad, *bad* stink.
1927 * GSAR 97-06-07
1928 */
68dc0745 1929
3e3baf6d
TB		 1930 if (!val) {
1931 if (!oldstr)
1932 return;
1933 val = "";
1934 vallen = 0;
1935 }
1936 else
1937 vallen = strlen(val);
f2517201 1938 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1939 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1940 (void)PerlEnv_putenv(envstr);
3e3baf6d 1941 if (oldstr)
f2517201 1942 safesysfree(oldstr);
3e3baf6d 1943#ifdef _MSC_VER
f2517201 1944 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1945#endif
1946
1947#else /* !USE_WIN32_RTL_ENV */
1948
ac5c734f
GS		 1949 register char *envstr;
1950 STRLEN len = strlen(nam) + 3;
1951 if (!val) {
1952 val = "";
1953 }
1954 len += strlen(val);
1955 New(904, envstr, len, char);
1956 (void)sprintf(envstr,"%s=%s",nam,val);
1957 (void)PerlEnv_putenv(envstr);
1958 Safefree(envstr);
3e3baf6d
TB		 1959
1960#endif
1961}
1962
1963#endif /* WIN32 */
1cab015a 1964#endif
3e3baf6d
TB		 1965
1966I32
864dbfa3 1967Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 1968{
1969 register I32 i, len = strlen(nam);
1970
1971 for (i = 0; environ[i]; i++) {
1972 if (
1973#ifdef WIN32
1974 strnicmp(environ[i],nam,len) == 0
1975#else
1976 strnEQ(environ[i],nam,len)
1977#endif
1978 && environ[i][len] == '=')
1979 break; /* strnEQ must come first to avoid */
1980 } /* potential SEGV's */
1981 return i;
68dc0745 1982}
1983
a0d0e21e 1984#endif /* !VMS */
378cc40b 1985
16d20bd9 1986#ifdef UNLINK_ALL_VERSIONS
79072805 1987I32
864dbfa3 1988Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1989{
79072805 1990 I32 i;
378cc40b 1991
6ad3d225 1992 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 1993 return i ? 0 : -1;
1994}
1995#endif
1996
85e6fe83 1997#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1998char *
864dbfa3 1999Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 2000{
2001 char *retval = to;
2002
7c0587c8
LW		 2003 if (from - to >= 0) {
2004 while (len--)
2005 *to++ = *from++;
2006 }
2007 else {
2008 to += len;
2009 from += len;
2010 while (len--)
faf8582f 2011 *(--to) = *(--from);
7c0587c8 2012 }
378cc40b
LW		 2013 return retval;
2014}
ffed7fef 2015#endif
378cc40b 2016
fc36a67e 2017#ifndef HAS_MEMSET
2018void *
864dbfa3 2019Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 2020{
2021 char *retval = loc;
2022
2023 while (len--)
2024 *loc++ = ch;
2025 return retval;
2026}
2027#endif
2028
7c0587c8 2029#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2030char *
864dbfa3 2031Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 2032{
2033 char *retval = loc;
2034
2035 while (len--)
2036 *loc++ = 0;
2037 return retval;
2038}
2039#endif
7c0587c8 2040
36477c24 2041#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2042I32
864dbfa3 2043Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2044{
36477c24 2045 register U8 *a = (U8 *)s1;
2046 register U8 *b = (U8 *)s2;
79072805 2047 register I32 tmp;
7c0587c8
LW		 2048
2049 while (len--) {
36477c24 2050 if (tmp = *a++ - *b++)
7c0587c8
LW		 2051 return tmp;
2052 }
2053 return 0;
2054}
36477c24 2055#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2056
fe14fcc3 2057#ifndef HAS_VPRINTF
a687059c 2058
85e6fe83 2059#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2060char *
2061#else
2062int
2063#endif
08105a92 2064vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2065{
2066 FILE fakebuf;
2067
2068 fakebuf._ptr = dest;
2069 fakebuf._cnt = 32767;
35c8bce7
LW		 2070#ifndef _IOSTRG
2071#define _IOSTRG 0
2072#endif
a687059c
LW		 2073 fakebuf._flag = _IOWRT|_IOSTRG;
2074 _doprnt(pat, args, &fakebuf); /* what a kludge */
2075 (void)putc('\0', &fakebuf);
85e6fe83 2076#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2077 return(dest);
2078#else
2079 return 0; /* perl doesn't use return value */
2080#endif
2081}
2082
fe14fcc3 2083#endif /* HAS_VPRINTF */
a687059c
LW		 2084
2085#ifdef MYSWAP
ffed7fef 2086#if BYTEORDER != 0x4321
a687059c 2087short
864dbfa3 2088Perl_my_swap(pTHX_ short s)
a687059c
LW		 2089{
2090#if (BYTEORDER & 1) == 0
2091 short result;
2092
2093 result = ((s & 255) << 8) + ((s >> 8) & 255);
2094 return result;
2095#else
2096 return s;
2097#endif
2098}
2099
2100long
864dbfa3 2101Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2102{
2103 union {
2104 long result;
ffed7fef 2105 char c[sizeof(long)];
a687059c
LW		 2106 } u;
2107
ffed7fef 2108#if BYTEORDER == 0x1234
a687059c
LW		 2109 u.c[0] = (l >> 24) & 255;
2110 u.c[1] = (l >> 16) & 255;
2111 u.c[2] = (l >> 8) & 255;
2112 u.c[3] = l & 255;
2113 return u.result;
2114#else
ffed7fef 2115#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2116 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2117#else
79072805
LW		 2118 register I32 o;
2119 register I32 s;
a687059c 2120
ffed7fef
LW		 2121 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2122 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2123 }
2124 return u.result;
2125#endif
2126#endif
2127}
2128
2129long
864dbfa3 2130Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2131{
2132 union {
2133 long l;
ffed7fef 2134 char c[sizeof(long)];
a687059c
LW		 2135 } u;
2136
ffed7fef 2137#if BYTEORDER == 0x1234
a687059c
LW		 2138 u.c[0] = (l >> 24) & 255;
2139 u.c[1] = (l >> 16) & 255;
2140 u.c[2] = (l >> 8) & 255;
2141 u.c[3] = l & 255;
2142 return u.l;
2143#else
ffed7fef 2144#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2145 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2146#else
79072805
LW		 2147 register I32 o;
2148 register I32 s;
a687059c
LW		 2149
2150 u.l = l;
2151 l = 0;
ffed7fef
LW		 2152 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2153 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2154 }
2155 return l;
2156#endif
2157#endif
2158}
2159
ffed7fef 2160#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2161#endif /* MYSWAP */
2162
2163/*
2164 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2165 * If these functions are defined,
2166 * the BYTEORDER is neither 0x1234 nor 0x4321.
2167 * However, this is not assumed.
2168 * -DWS
2169 */
2170
2171#define HTOV(name,type) \
2172 type \
ba106d47 2173 name (register type n) \
988174c1
LW		 2174 { \
2175 union { \
2176 type value; \
2177 char c[sizeof(type)]; \
2178 } u; \
79072805
LW		 2179 register I32 i; \
2180 register I32 s; \
988174c1
LW		 2181 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2182 u.c[i] = (n >> s) & 0xFF; \
2183 } \
2184 return u.value; \
2185 }
2186
2187#define VTOH(name,type) \
2188 type \
ba106d47 2189 name (register type n) \
988174c1
LW		 2190 { \
2191 union { \
2192 type value; \
2193 char c[sizeof(type)]; \
2194 } u; \
79072805
LW		 2195 register I32 i; \
2196 register I32 s; \
988174c1
LW		 2197 u.value = n; \
2198 n = 0; \
2199 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2200 n += (u.c[i] & 0xFF) << s; \
2201 } \
2202 return n; \
2203 }
2204
2205#if defined(HAS_HTOVS) && !defined(htovs)
2206HTOV(htovs,short)
2207#endif
2208#if defined(HAS_HTOVL) && !defined(htovl)
2209HTOV(htovl,long)
2210#endif
2211#if defined(HAS_VTOHS) && !defined(vtohs)
2212VTOH(vtohs,short)
2213#endif
2214#if defined(HAS_VTOHL) && !defined(vtohl)
2215VTOH(vtohl,long)
2216#endif
a687059c 2217
5f05dabc 2218 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2219#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2220PerlIO *
864dbfa3 2221Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2222{
2223 int p[2];
8ac85365 2224 register I32 This, that;
79072805
LW		 2225 register I32 pid;
2226 SV *sv;
1738f5c4 2227 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2228 I32 did_pipes = 0;
2229 int pp[2];
a687059c 2230
45bc9206 2231 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2232#ifdef OS2
2233 if (doexec) {
2234 return my_syspopen(cmd,mode);
2235 }
2236#endif
8ac85365
NIS		 2237 This = (*mode == 'w');
2238 that = !This;
3280af22 2239 if (doexec && PL_tainting) {
bbce6d69 2240 taint_env();
2241 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2242 }
c2267164
IZ		 2243 if (PerlProc_pipe(p) < 0)
2244 return Nullfp;
e446cec8
IZ		 2245 if (doexec && PerlProc_pipe(pp) >= 0)
2246 did_pipes = 1;
a687059c
LW		 2247 while ((pid = (doexec?vfork():fork())) < 0) {
2248 if (errno != EAGAIN) {
6ad3d225 2249 PerlLIO_close(p[This]);
e446cec8
IZ		 2250 if (did_pipes) {
2251 PerlLIO_close(pp[0]);
2252 PerlLIO_close(pp[1]);
2253 }
a687059c 2254 if (!doexec)
cea2e8a9 2255 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2256 return Nullfp;
2257 }
2258 sleep(5);
2259 }
2260 if (pid == 0) {
79072805
LW		 2261 GV* tmpgv;
2262
30ac6d9b
GS		 2263#undef THIS
2264#undef THAT
a687059c 2265#define THIS that
8ac85365 2266#define THAT This
6ad3d225 2267 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2268 if (did_pipes) {
2269 PerlLIO_close(pp[0]);
2270#if defined(HAS_FCNTL) && defined(F_SETFD)
2271 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2272#endif
2273 }
a687059c 2274 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2275 PerlLIO_dup2(p[THIS], *mode == 'r');
2276 PerlLIO_close(p[THIS]);
a687059c 2277 }
4435c477 2278#ifndef OS2
a687059c 2279 if (doexec) {
a0d0e21e 2280#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2281 int fd;
2282
2283#ifndef NOFILE
2284#define NOFILE 20
2285#endif
6b88bc9c 2286 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2287 if (fd != pp[1])
2288 PerlLIO_close(fd);
ae986130 2289#endif
e446cec8 2290 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2291 PerlProc__exit(1);
a687059c 2292 }
4435c477 2293#endif /* defined OS2 */
de3bb511 2294 /*SUPPRESS 560*/
85e6fe83 2295 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2296 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS		 2297 PL_forkprocess = 0;
2298 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2299 return Nullfp;
2300#undef THIS
2301#undef THAT
2302 }
62b28dd9 2303 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2304 PerlLIO_close(p[that]);
e446cec8
IZ		 2305 if (did_pipes)
2306 PerlLIO_close(pp[1]);
8ac85365 2307 if (p[that] < p[This]) {
6ad3d225
GS		 2308 PerlLIO_dup2(p[This], p[that]);
2309 PerlLIO_close(p[This]);
8ac85365 2310 p[This] = p[that];
62b28dd9 2311 }
3280af22 2312 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2313 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2314 SvIVX(sv) = pid;
3280af22 2315 PL_forkprocess = pid;
e446cec8
IZ		 2316 if (did_pipes && pid > 0) {
2317 int errkid;
2318 int n = 0, n1;
2319
2320 while (n < sizeof(int)) {
2321 n1 = PerlLIO_read(pp[0],
2322 (void*)(((char*)&errkid)+n),
2323 (sizeof(int)) - n);
2324 if (n1 <= 0)
2325 break;
2326 n += n1;
2327 }
2f96c702
IZ		 2328 PerlLIO_close(pp[0]);
2329 did_pipes = 0;
e446cec8
IZ		 2330 if (n) { /* Error */
2331 if (n != sizeof(int))
cea2e8a9 2332 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2333 errno = errkid; /* Propagate errno from kid */
2334 return Nullfp;
2335 }
2336 }
2337 if (did_pipes)
2338 PerlLIO_close(pp[0]);
8ac85365 2339 return PerlIO_fdopen(p[This], mode);
a687059c 2340}
7c0587c8 2341#else
55497cff 2342#if defined(atarist) || defined(DJGPP)
7c0587c8 2343FILE *popen();
760ac839 2344PerlIO *
864dbfa3 2345Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2346{
760ac839 2347 /* Needs work for PerlIO ! */
55497cff 2348 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2349 PERL_FLUSHALL_FOR_CHILD;
55497cff 2350 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2351}
2352#endif
2353
2354#endif /* !DOSISH */
a687059c 2355
748a9306 2356#ifdef DUMP_FDS
35ff7856 2357void
864dbfa3 2358Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2359{
2360 int fd;
2361 struct stat tmpstatbuf;
2362
760ac839 2363 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2364 for (fd = 0; fd < 32; fd++) {
6ad3d225 2365 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2366 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2367 }
760ac839 2368 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2369}
35ff7856 2370#endif /* DUMP_FDS */
ae986130 2371
fe14fcc3 2372#ifndef HAS_DUP2
fec02dd3 2373int
ba106d47 2374dup2(int oldfd, int newfd)
a687059c 2375{
a0d0e21e 2376#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2377 if (oldfd == newfd)
2378 return oldfd;
6ad3d225 2379 PerlLIO_close(newfd);
fec02dd3 2380 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2381#else
fc36a67e 2382#define DUP2_MAX_FDS 256
2383 int fdtmp[DUP2_MAX_FDS];
79072805 2384 I32 fdx = 0;
ae986130
LW		 2385 int fd;
2386
fe14fcc3 2387 if (oldfd == newfd)
fec02dd3 2388 return oldfd;
6ad3d225 2389 PerlLIO_close(newfd);
fc36a67e 2390 /* good enough for low fd's... */
6ad3d225 2391 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2392 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2393 PerlLIO_close(fd);
fc36a67e 2394 fd = -1;
2395 break;
2396 }
ae986130 2397 fdtmp[fdx++] = fd;
fc36a67e 2398 }
ae986130 2399 while (fdx > 0)
6ad3d225 2400 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2401 return fd;
62b28dd9 2402#endif
a687059c
LW		 2403}
2404#endif
2405
ff68c719 2406
2407#ifdef HAS_SIGACTION
2408
2409Sighandler_t
864dbfa3 2410Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2411{
2412 struct sigaction act, oact;
2413
2414 act.sa_handler = handler;
2415 sigemptyset(&act.sa_mask);
2416 act.sa_flags = 0;
2417#ifdef SA_RESTART
2418 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2419#endif
85264bed
CS		 2420#ifdef SA_NOCLDWAIT
2421 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2422 act.sa_flags |= SA_NOCLDWAIT;
2423#endif
ff68c719 2424 if (sigaction(signo, &act, &oact) == -1)
36477c24 2425 return SIG_ERR;
ff68c719 2426 else
36477c24 2427 return oact.sa_handler;
ff68c719 2428}
2429
2430Sighandler_t
864dbfa3 2431Perl_rsignal_state(pTHX_ int signo)
ff68c719 2432{
2433 struct sigaction oact;
2434
2435 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2436 return SIG_ERR;
2437 else
2438 return oact.sa_handler;
2439}
2440
2441int
864dbfa3 2442Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2443{
2444 struct sigaction act;
2445
2446 act.sa_handler = handler;
2447 sigemptyset(&act.sa_mask);
2448 act.sa_flags = 0;
2449#ifdef SA_RESTART
2450 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2451#endif
85264bed
CS		 2452#ifdef SA_NOCLDWAIT
2453 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2454 act.sa_flags |= SA_NOCLDWAIT;
2455#endif
ff68c719 2456 return sigaction(signo, &act, save);
2457}
2458
2459int
864dbfa3 2460Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2461{
2462 return sigaction(signo, save, (struct sigaction *)NULL);
2463}
2464
2465#else /* !HAS_SIGACTION */
2466
2467Sighandler_t
864dbfa3 2468Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2469{
6ad3d225 2470 return PerlProc_signal(signo, handler);
ff68c719 2471}
2472
2473static int sig_trapped;
2474
2475static
2476Signal_t
4e35701f 2477sig_trap(int signo)
ff68c719 2478{
2479 sig_trapped++;
2480}
2481
2482Sighandler_t
864dbfa3 2483Perl_rsignal_state(pTHX_ int signo)
ff68c719 2484{
2485 Sighandler_t oldsig;
2486
2487 sig_trapped = 0;
6ad3d225
GS		 2488 oldsig = PerlProc_signal(signo, sig_trap);
2489 PerlProc_signal(signo, oldsig);
ff68c719 2490 if (sig_trapped)
6ad3d225 2491 PerlProc_kill(getpid(), signo);
ff68c719 2492 return oldsig;
2493}
2494
2495int
864dbfa3 2496Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2497{
6ad3d225 2498 *save = PerlProc_signal(signo, handler);
ff68c719 2499 return (*save == SIG_ERR) ? -1 : 0;
2500}
2501
2502int
864dbfa3 2503Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2504{
6ad3d225 2505 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2506}
2507
2508#endif /* !HAS_SIGACTION */
2509
5f05dabc 2510 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2511#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2512I32
864dbfa3 2513Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2514{
ff68c719 2515 Sigsave_t hstat, istat, qstat;
a687059c 2516 int status;
a0d0e21e 2517 SV **svp;
20188a90 2518 int pid;
1d3434b8 2519 int pid2;
03136e13
CS		 2520 bool close_failed;
2521 int saved_errno;
2522#ifdef VMS
2523 int saved_vaxc_errno;
2524#endif
22fae026
TM		 2525#ifdef WIN32
2526 int saved_win32_errno;
2527#endif
a687059c 2528
3280af22 2529 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2530 pid = (int)SvIVX(*svp);
a0d0e21e 2531 SvREFCNT_dec(*svp);
3280af22 2532 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2533#ifdef OS2
2534 if (pid == -1) { /* Opened by popen. */
2535 return my_syspclose(ptr);
2536 }
2537#endif
03136e13
CS		 2538 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2539 saved_errno = errno;
2540#ifdef VMS
2541 saved_vaxc_errno = vaxc$errno;
2542#endif
22fae026
TM		 2543#ifdef WIN32
2544 saved_win32_errno = GetLastError();
2545#endif
03136e13 2546 }
7c0587c8 2547#ifdef UTS
6ad3d225 2548 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2549#endif
ff68c719 2550 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2551 rsignal_save(SIGINT, SIG_IGN, &istat);
2552 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2553 do {
1d3434b8
GS		 2554 pid2 = wait4pid(pid, &status, 0);
2555 } while (pid2 == -1 && errno == EINTR);
ff68c719 2556 rsignal_restore(SIGHUP, &hstat);
2557 rsignal_restore(SIGINT, &istat);
2558 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2559 if (close_failed) {
2560 SETERRNO(saved_errno, saved_vaxc_errno);
2561 return -1;
2562 }
1d3434b8 2563 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2564}
4633a7c4
LW		 2565#endif /* !DOSISH */
2566
2c2d71f5 2567#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2568I32
864dbfa3 2569Perl_wait4pid(pTHX_ int pid, int *statusp, int flags)
20188a90 2570{
79072805
LW		 2571 SV *sv;
2572 SV** svp;
fc36a67e 2573 char spid[TYPE_CHARS(int)];
20188a90
LW		 2574
2575 if (!pid)
2576 return -1;
20188a90
LW		 2577 if (pid > 0) {
2578 sprintf(spid, "%d", pid);
3280af22
NIS		 2579 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2580 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2581 *statusp = SvIVX(*svp);
3280af22 2582 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2583 return pid;
2584 }
2585 }
2586 else {
79072805 2587 HE *entry;
20188a90 2588
3280af22
NIS		 2589 hv_iterinit(PL_pidstatus);
2590 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2591 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2592 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2593 *statusp = SvIVX(sv);
20188a90 2594 sprintf(spid, "%d", pid);
3280af22 2595 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2596 return pid;
2597 }
2598 }
79072805 2599#ifdef HAS_WAITPID
367f3c24
IZ		 2600# ifdef HAS_WAITPID_RUNTIME
2601 if (!HAS_WAITPID_RUNTIME)
2602 goto hard_way;
2603# endif
f55ee38a 2604 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2605#endif
2606#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2607 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2608#endif
2609#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2610 hard_way:
a0d0e21e
LW		 2611 {
2612 I32 result;
2613 if (flags)
cea2e8a9 2614 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2615 else {
76e3520e 2616 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2617 pidgone(result,*statusp);
2618 if (result < 0)
2619 *statusp = -1;
2620 }
2621 return result;
a687059c
LW		 2622 }
2623#endif
a687059c 2624}
2d7a9237 2625#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2626
7c0587c8 2627void
de3bb511 2628/*SUPPRESS 590*/
864dbfa3 2629Perl_pidgone(pTHX_ int pid, int status)
a687059c 2630{
79072805 2631 register SV *sv;
fc36a67e 2632 char spid[TYPE_CHARS(int)];
a687059c 2633
20188a90 2634 sprintf(spid, "%d", pid);
3280af22 2635 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2636 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2637 SvIVX(sv) = status;
20188a90 2638 return;
a687059c
LW		 2639}
2640
55497cff 2641#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2642int pclose();
ddcf38b7
IZ		 2643#ifdef HAS_FORK
2644int /* Cannot prototype with I32
2645 in os2ish.h. */
ba106d47 2646my_syspclose(PerlIO *ptr)
ddcf38b7 2647#else
79072805 2648I32
864dbfa3 2649Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2650#endif
a687059c 2651{
760ac839
LW		 2652 /* Needs work for PerlIO ! */
2653 FILE *f = PerlIO_findFILE(ptr);
2654 I32 result = pclose(f);
2655 PerlIO_releaseFILE(ptr,f);
2656 return result;
a687059c 2657}
7c0587c8 2658#endif
9f68db38
LW		 2659
2660void
864dbfa3 2661Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2662{
79072805 2663 register I32 todo;
08105a92 2664 register const char *frombase = from;
9f68db38
LW		 2665
2666 if (len == 1) {
08105a92 2667 register const char c = *from;
9f68db38 2668 while (count-- > 0)
5926133d 2669 *to++ = c;
9f68db38
LW		 2670 return;
2671 }
2672 while (count-- > 0) {
2673 for (todo = len; todo > 0; todo--) {
2674 *to++ = *from++;
2675 }
2676 from = frombase;
2677 }
2678}
0f85fab0 2679
463ee0b2 2680U32
65202027 2681Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2682{
2683 long along;
2684
27e2fb84 2685#if CASTFLAGS & 2
34de22dd
LW		 2686# define BIGDOUBLE 2147483648.0
2687 if (f >= BIGDOUBLE)
2688 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2689#endif
0f85fab0
LW		 2690 if (f >= 0.0)
2691 return (unsigned long)f;
2692 along = (long)f;
2693 return (unsigned long)along;
2694}
ed6116ce 2695# undef BIGDOUBLE
5d94fbed 2696
5d94fbed
AD		 2697/* Unfortunately, on some systems the cast_uv() function doesn't
2698 work with the system-supplied definition of ULONG_MAX. The
2699 comparison (f >= ULONG_MAX) always comes out true. It must be a
2700 problem with the compiler constant folding.
2701
2702 In any case, this workaround should be fine on any two's complement
2703 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2704 ccflags.
2705 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2706*/
1eb770ff 2707
2708/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2709 of LONG_(MIN/MAX).
2710 -- Kenneth Albanowski <kjahds@kjahds.com>
2711*/
2712
20cec16a 2713#ifndef MY_UV_MAX
2714# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2715#endif
2716
ed6116ce 2717I32
65202027 2718Perl_cast_i32(pTHX_ NV f)
ed6116ce 2719{
20cec16a 2720 if (f >= I32_MAX)
2721 return (I32) I32_MAX;
2722 if (f <= I32_MIN)
2723 return (I32) I32_MIN;
ed6116ce
LW		 2724 return (I32) f;
2725}
a0d0e21e
LW		 2726
2727IV
65202027 2728Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2729{
25da4f38
IZ		 2730 if (f >= IV_MAX) {
2731 UV uv;
2732
65202027 2733 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2734 return (IV) UV_MAX;
2735 uv = (UV) f;
2736 return (IV)uv;
2737 }
20cec16a 2738 if (f <= IV_MIN)
2739 return (IV) IV_MIN;
a0d0e21e
LW		 2740 return (IV) f;
2741}
5d94fbed
AD		 2742
2743UV
65202027 2744Perl_cast_uv(pTHX_ NV f)
5d94fbed 2745{
20cec16a 2746 if (f >= MY_UV_MAX)
2747 return (UV) MY_UV_MAX;
25da4f38
IZ		 2748 if (f < 0) {
2749 IV iv;
2750
2751 if (f < IV_MIN)
2752 return (UV)IV_MIN;
2753 iv = (IV) f;
2754 return (UV) iv;
2755 }
5d94fbed
AD		 2756 return (UV) f;
2757}
2758
fe14fcc3 2759#ifndef HAS_RENAME
79072805 2760I32
864dbfa3 2761Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2762{
93a17b20
LW		 2763 char *fa = strrchr(a,'/');
2764 char *fb = strrchr(b,'/');
62b28dd9
LW		 2765 struct stat tmpstatbuf1;
2766 struct stat tmpstatbuf2;
46fc3d4c 2767 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2768
2769 if (fa)
2770 fa++;
2771 else
2772 fa = a;
2773 if (fb)
2774 fb++;
2775 else
2776 fb = b;
2777 if (strNE(a,b))
2778 return FALSE;
2779 if (fa == a)
46fc3d4c 2780 sv_setpv(tmpsv, ".");
62b28dd9 2781 else
46fc3d4c 2782 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2783 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2784 return FALSE;
2785 if (fb == b)
46fc3d4c 2786 sv_setpv(tmpsv, ".");
62b28dd9 2787 else
46fc3d4c 2788 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2789 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2790 return FALSE;
2791 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2792 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2793}
fe14fcc3
LW		 2794#endif /* !HAS_RENAME */
2795
9e24b6e2 2796NV
864dbfa3 2797Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2798{
2799 register char *s = start;
9e24b6e2
JH		 2800 register NV rnv = 0.0;
2801 register UV ruv = 0;
252aa082 2802 register bool seenb = FALSE;
9e24b6e2 2803 register bool overflowed = FALSE;
252aa082
JH		 2804
2805 for (; len-- && *s; s++) {
2806 if (!(*s == '0' || *s == '1')) {
2807 if (*s == '_')
9e24b6e2 2808 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2809 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2810 /* Disallow 0bbb0b0bbb... */
2811 seenb = TRUE;
252aa082
JH		 2812 continue;
2813 }
2814 else {
2815 dTHR;
2816 if (ckWARN(WARN_UNSAFE))
2817 Perl_warner(aTHX_ WARN_UNSAFE,
2818 "Illegal binary digit '%c' ignored", *s);
2819 break;
2820 }
9e24b6e2
JH		 2821 }
2822 if (!overflowed) {
2823 register UV xuv = ruv << 1;
2824
2825 if ((xuv >> 1) != ruv) {
2826 dTHR;
2827 overflowed = TRUE;
2828 rnv = (NV) ruv;
2829 if (ckWARN_d(WARN_UNSAFE))
2830 Perl_warner(aTHX_ WARN_UNSAFE,
2831 "Integer overflow in binary number");
2832 } else
2833 ruv = xuv | (*s - '0');
2834 }
2835 if (overflowed) {
2836 rnv *= 2;
2837 /* If an NV has not enough bits in its mantissa to
2838 * represent an UV this summing of small low-order numbers
2839 * is a waste of time (because the NV cannot preserve
2840 * the low-order bits anyway): we could just remember when
2841 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2842 * right amount. */
9e24b6e2 2843 rnv += (*s - '0');
f248d071 2844 }
4f19785b 2845 }
9e24b6e2
JH		 2846 if (!overflowed)
2847 rnv = (NV) ruv;
893fe2c2
JH		 2848 if ( ( overflowed && rnv > 4294967295.0)
2849#if UV_SIZEOF > 4
2850 || (!overflowed && ruv > 0xffffffff )
2851#endif
2852 ) {
252aa082
JH		 2853 dTHR;
2854 if (ckWARN(WARN_UNSAFE))
2855 Perl_warner(aTHX_ WARN_UNSAFE,
2856 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2857 }
2858 *retlen = s - start;
9e24b6e2 2859 return rnv;
4f19785b 2860}
9e24b6e2
JH		 2861
2862NV
864dbfa3 2863Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2864{
2865 register char *s = start;
9e24b6e2
JH		 2866 register NV rnv = 0.0;
2867 register UV ruv = 0;
2868 register bool overflowed = FALSE;
252aa082
JH		 2869
2870 for (; len-- && *s; s++) {
2871 if (!(*s >= '0' && *s <= '7')) {
2872 if (*s == '_')
9e24b6e2 2873 continue; /* Note: does not check for __ and the like. */
252aa082 2874 else {
f84f607d
JH		 2875 /* Allow \octal to work the DWIM way (that is, stop scanning
2876 * as soon as non-octal characters are seen, complain only iff
2877 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2878 if (*s == '8' || *s == '9') {
2879 dTHR;
2880 if (ckWARN(WARN_OCTAL))
2881 Perl_warner(aTHX_ WARN_OCTAL,
2882 "Illegal octal digit '%c' ignored", *s);
2883 }
2884 break;
2885 }
55497cff 2886 }
9e24b6e2 2887 if (!overflowed) {
893fe2c2 2888 register UV xuv = ruv << 3;
9e24b6e2
JH		 2889
2890 if ((xuv >> 3) != ruv) {
2891 dTHR;
2892 overflowed = TRUE;
2893 rnv = (NV) ruv;
2894 if (ckWARN_d(WARN_UNSAFE))
2895 Perl_warner(aTHX_ WARN_UNSAFE,
2896 "Integer overflow in octal number");
2897 } else
2898 ruv = xuv | (*s - '0');
2899 }
2900 if (overflowed) {
2901 rnv *= 8.0;
2902 /* If an NV has not enough bits in its mantissa to
2903 * represent an UV this summing of small low-order numbers
2904 * is a waste of time (because the NV cannot preserve
2905 * the low-order bits anyway): we could just remember when
2906 * did we overflow and in the end just multiply rnv by the
2907 * right amount of 8-tuples. */
2908 rnv += (NV)(*s - '0');
2909 }
fe14fcc3 2910 }
9e24b6e2
JH		 2911 if (!overflowed)
2912 rnv = (NV) ruv;
893fe2c2
JH		 2913 if ( ( overflowed && rnv > 4294967295.0)
2914#if UV_SIZEOF > 4
2915 || (!overflowed && ruv > 0xffffffff )
2916#endif
2917 ) {
d008e5eb 2918 dTHR;
252aa082
JH		 2919 if (ckWARN(WARN_UNSAFE))
2920 Perl_warner(aTHX_ WARN_UNSAFE,
2921 "Octal number > 037777777777 non-portable");
d008e5eb 2922 }
fe14fcc3 2923 *retlen = s - start;
9e24b6e2 2924 return rnv;
fe14fcc3
LW		 2925}
2926
9e24b6e2 2927NV
864dbfa3 2928Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2929{
2930 register char *s = start;
9e24b6e2
JH		 2931 register NV rnv = 0.0;
2932 register UV ruv = 0;
252aa082 2933 register bool seenx = FALSE;
9e24b6e2 2934 register bool overflowed = FALSE;
9e24b6e2 2935 char *hexdigit;
fe14fcc3 2936
9e24b6e2
JH		 2937 for (; len-- && *s; s++) {
2938 hexdigit = strchr((char *) PL_hexdigit, *s);
2939 if (!hexdigit) {
2940 if (*s == '_')
2941 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2942 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 2943 /* Disallow 0xxx0x0xxx... */
2944 seenx = TRUE;
252aa082
JH		 2945 continue;
2946 }
a0ed51b3 2947 else {
d008e5eb 2948 dTHR;
599cee73 2949 if (ckWARN(WARN_UNSAFE))
252aa082
JH		 2950 Perl_warner(aTHX_ WARN_UNSAFE,
2951 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 2952 break;
2953 }
2954 }
9e24b6e2
JH		 2955 if (!overflowed) {
2956 register UV xuv = ruv << 4;
2957
2958 if ((xuv >> 4) != ruv) {
2959 dTHR;
2960 overflowed = TRUE;
2961 rnv = (NV) ruv;
2962 if (ckWARN_d(WARN_UNSAFE))
2963 Perl_warner(aTHX_ WARN_UNSAFE,
2964 "Integer overflow in hexadecimal number");
2965 } else
2966 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2967 }
2968 if (overflowed) {
2969 rnv *= 16.0;
2970 /* If an NV has not enough bits in its mantissa to
2971 * represent an UV this summing of small low-order numbers
2972 * is a waste of time (because the NV cannot preserve
2973 * the low-order bits anyway): we could just remember when
2974 * did we overflow and in the end just multiply rnv by the
2975 * right amount of 16-tuples. */
2976 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2977 }
6ff81951 2978 }
9e24b6e2
JH		 2979 if (!overflowed)
2980 rnv = (NV) ruv;
893fe2c2
JH		 2981 if ( ( overflowed && rnv > 4294967295.0)
2982#if UV_SIZEOF > 4
2983 || (!overflowed && ruv > 0xffffffff )
2984#endif
2985 ) {
252aa082
JH		 2986 dTHR;
2987 if (ckWARN(WARN_UNSAFE))
2988 Perl_warner(aTHX_ WARN_UNSAFE,
2989 "Hexadecimal number > 0xffffffff non-portable");
2990 }
fe14fcc3 2991 *retlen = s - start;
9e24b6e2 2992 return rnv;
fe14fcc3 2993}
760ac839 2994
491527d0 2995char*
864dbfa3 2996Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 2997{
2998 dTHR;
2999 char *xfound = Nullch;
3000 char *xfailed = Nullch;
0f31cffe 3001 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3002 register char *s;
3003 I32 len;
3004 int retval;
3005#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3006# define SEARCH_EXTS ".bat", ".cmd", NULL
3007# define MAX_EXT_LEN 4
3008#endif
3009#ifdef OS2
3010# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3011# define MAX_EXT_LEN 4
3012#endif
3013#ifdef VMS
3014# define SEARCH_EXTS ".pl", ".com", NULL
3015# define MAX_EXT_LEN 4
3016#endif
3017 /* additional extensions to try in each dir if scriptname not found */
3018#ifdef SEARCH_EXTS
3019 char *exts[] = { SEARCH_EXTS };
3020 char **ext = search_ext ? search_ext : exts;
3021 int extidx = 0, i = 0;
3022 char *curext = Nullch;
3023#else
3024# define MAX_EXT_LEN 0
3025#endif
3026
3027 /*
3028 * If dosearch is true and if scriptname does not contain path
3029 * delimiters, search the PATH for scriptname.
3030 *
3031 * If SEARCH_EXTS is also defined, will look for each
3032 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3033 * while searching the PATH.
3034 *
3035 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3036 * proceeds as follows:
3037 * If DOSISH or VMSISH:
3038 * + look for ./scriptname{,.foo,.bar}
3039 * + search the PATH for scriptname{,.foo,.bar}
3040 *
3041 * If !DOSISH:
3042 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3043 * this will not look in '.' if it's not in the PATH)
3044 */
84486fc6 3045 tmpbuf[0] = '\0';
491527d0
GS		 3046
3047#ifdef VMS
3048# ifdef ALWAYS_DEFTYPES
3049 len = strlen(scriptname);
3050 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3051 int hasdir, idx = 0, deftypes = 1;
3052 bool seen_dot = 1;
3053
3054 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3055# else
3056 if (dosearch) {
3057 int hasdir, idx = 0, deftypes = 1;
3058 bool seen_dot = 1;
3059
3060 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3061# endif
3062 /* The first time through, just add SEARCH_EXTS to whatever we
3063 * already have, so we can check for default file types. */
3064 while (deftypes ||
84486fc6 3065 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3066 {
3067 if (deftypes) {
3068 deftypes = 0;
84486fc6 3069 *tmpbuf = '\0';
491527d0 3070 }
84486fc6
GS		 3071 if ((strlen(tmpbuf) + strlen(scriptname)
3072 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3073 continue; /* don't search dir with too-long name */
84486fc6 3074 strcat(tmpbuf, scriptname);
491527d0
GS		 3075#else /* !VMS */
3076
3077#ifdef DOSISH
3078 if (strEQ(scriptname, "-"))
3079 dosearch = 0;
3080 if (dosearch) { /* Look in '.' first. */
3081 char *cur = scriptname;
3082#ifdef SEARCH_EXTS
3083 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3084 while (ext[i])
3085 if (strEQ(ext[i++],curext)) {
3086 extidx = -1; /* already has an ext */
3087 break;
3088 }
3089 do {
3090#endif
3091 DEBUG_p(PerlIO_printf(Perl_debug_log,
3092 "Looking for %s\n",cur));
017f25f1
IZ		 3093 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3094 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3095 dosearch = 0;
3096 scriptname = cur;
3097#ifdef SEARCH_EXTS
3098 break;
3099#endif
3100 }
3101#ifdef SEARCH_EXTS
3102 if (cur == scriptname) {
3103 len = strlen(scriptname);
84486fc6 3104 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3105 break;
84486fc6 3106 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3107 }
3108 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3109 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3110#endif
3111 }
3112#endif
3113
3114 if (dosearch && !strchr(scriptname, '/')
3115#ifdef DOSISH
3116 && !strchr(scriptname, '\\')
3117#endif
3118 && (s = PerlEnv_getenv("PATH"))) {
3119 bool seen_dot = 0;
3120
3280af22
NIS		 3121 PL_bufend = s + strlen(s);
3122 while (s < PL_bufend) {
491527d0
GS		 3123#if defined(atarist) || defined(DOSISH)
3124 for (len = 0; *s
3125# ifdef atarist
3126 && *s != ','
3127# endif
3128 && *s != ';'; len++, s++) {
84486fc6
GS		 3129 if (len < sizeof tmpbuf)
3130 tmpbuf[len] = *s;
491527d0 3131 }
84486fc6
GS		 3132 if (len < sizeof tmpbuf)
3133 tmpbuf[len] = '\0';
491527d0 3134#else /* ! (atarist || DOSISH) */
3280af22 3135 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3136 ':',
3137 &len);
3138#endif /* ! (atarist || DOSISH) */
3280af22 3139 if (s < PL_bufend)
491527d0 3140 s++;
84486fc6 3141 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS		 3142 continue; /* don't search dir with too-long name */
3143 if (len
61ae2fbf 3144#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3145 && tmpbuf[len - 1] != '/'
3146 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3147#endif
3148 )
84486fc6
GS		 3149 tmpbuf[len++] = '/';
3150 if (len == 2 && tmpbuf[0] == '.')
491527d0 3151 seen_dot = 1;
84486fc6 3152 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3153#endif /* !VMS */
3154
3155#ifdef SEARCH_EXTS
84486fc6 3156 len = strlen(tmpbuf);
491527d0
GS		 3157 if (extidx > 0) /* reset after previous loop */
3158 extidx = 0;
3159 do {
3160#endif
84486fc6 3161 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3162 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3163 if (S_ISDIR(PL_statbuf.st_mode)) {
3164 retval = -1;
3165 }
491527d0
GS		 3166#ifdef SEARCH_EXTS
3167 } while ( retval < 0 /* not there */
3168 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3169 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3170 );
3171#endif
3172 if (retval < 0)
3173 continue;
3280af22
NIS		 3174 if (S_ISREG(PL_statbuf.st_mode)
3175 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3176#ifndef DOSISH
3280af22 3177 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3178#endif
3179 )
3180 {
84486fc6 3181 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3182 break;
3183 }
3184 if (!xfailed)
84486fc6 3185 xfailed = savepv(tmpbuf);
491527d0
GS		 3186 }
3187#ifndef DOSISH
017f25f1
IZ		 3188 if (!xfound && !seen_dot && !xfailed &&
3189 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3190 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3191#endif
3192 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3193 if (!xfound) {
3194 if (flags & 1) { /* do or die? */
cea2e8a9 3195 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3196 (xfailed ? "execute" : "find"),
3197 (xfailed ? xfailed : scriptname),
3198 (xfailed ? "" : " on PATH"),
3199 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3200 }
3201 scriptname = Nullch;
3202 }
491527d0
GS		 3203 if (xfailed)
3204 Safefree(xfailed);
3205 scriptname = xfound;
3206 }
9ccb31f9 3207 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3208}
3209
3210
11343788 3211#ifdef USE_THREADS
12ca11f6
MB		 3212#ifdef FAKE_THREADS
3213/* Very simplistic scheduler for now */
3214void
3215schedule(void)
3216{
c7848ba1 3217 thr = thr->i.next_run;
12ca11f6
MB		 3218}
3219
3220void
864dbfa3 3221Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3222{
3223 *cp = 0;
3224}
3225
3226void
864dbfa3 3227Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3228{
51dd5992 3229 perl_os_thread t;
12ca11f6
MB		 3230 perl_cond cond = *cp;
3231
3232 if (!cond)
3233 return;
3234 t = cond->thread;
3235 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3236 t->i.next_run = thr->i.next_run;
3237 thr->i.next_run->i.prev_run = t;
3238 t->i.prev_run = thr;
3239 thr->i.next_run = t;
3240 thr->i.wait_queue = 0;
12ca11f6
MB		 3241 /* Remove from the wait queue */
3242 *cp = cond->next;
3243 Safefree(cond);
3244}
3245
3246void
864dbfa3 3247Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3248{
51dd5992 3249 perl_os_thread t;
12ca11f6
MB		 3250 perl_cond cond, cond_next;
3251
3252 for (cond = *cp; cond; cond = cond_next) {
3253 t = cond->thread;
3254 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3255 t->i.next_run = thr->i.next_run;
3256 thr->i.next_run->i.prev_run = t;
3257 t->i.prev_run = thr;
3258 thr->i.next_run = t;
3259 thr->i.wait_queue = 0;
12ca11f6
MB		 3260 /* Remove from the wait queue */
3261 cond_next = cond->next;
3262 Safefree(cond);
3263 }
3264 *cp = 0;
3265}
3266
3267void
864dbfa3 3268Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3269{
3270 perl_cond cond;
3271
c7848ba1 3272 if (thr->i.next_run == thr)
cea2e8a9 3273 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3274
0f15f207 3275 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3276 cond->thread = thr;
3277 cond->next = *cp;
3278 *cp = cond;
c7848ba1 3279 thr->i.wait_queue = cond;
12ca11f6 3280 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3281 thr->i.next_run->i.prev_run = thr->i.prev_run;
3282 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3283}
3284#endif /* FAKE_THREADS */
3285
0d85d877 3286#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3287struct perl_thread *
864dbfa3 3288Perl_getTHR(pTHX)
11343788
MB		 3289{
3290 pthread_addr_t t;
3291
6b88bc9c 3292 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3293 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3294 return (struct perl_thread *) t;
11343788 3295}
0d85d877 3296#endif
f93b4edd
MB		 3297
3298MAGIC *
864dbfa3 3299Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3300{
3301 MAGIC *mg;
3302
3303 SvUPGRADE(sv, SVt_PVMG);
3304 mg = mg_find(sv, 'm');
3305 if (!mg) {
3306 condpair_t *cp;
3307
3308 New(53, cp, 1, condpair_t);
3309 MUTEX_INIT(&cp->mutex);
3310 COND_INIT(&cp->owner_cond);
3311 COND_INIT(&cp->cond);
3312 cp->owner = 0;
28a8573f 3313 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3314 mg = mg_find(sv, 'm');
3315 if (mg) {
3316 /* someone else beat us to initialising it */
28a8573f 3317 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3318 MUTEX_DESTROY(&cp->mutex);
3319 COND_DESTROY(&cp->owner_cond);
3320 COND_DESTROY(&cp->cond);
3321 Safefree(cp);
3322 }
3323 else {
3324 sv_magic(sv, Nullsv, 'm', 0, 0);
3325 mg = SvMAGIC(sv);
3326 mg->mg_ptr = (char *)cp;
565764a8 3327 mg->mg_len = sizeof(cp);
28a8573f 3328 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3329 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3330 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3331 }
3332 }
3333 return mg;
3334}
a863c7d1
MB		 3335
3336/*
199100c8
MB		 3337 * Make a new perl thread structure using t as a prototype. Some of the
3338 * fields for the new thread are copied from the prototype thread, t,
3339 * so t should not be running in perl at the time this function is
3340 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3341 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3342 */
52e1cb5e 3343struct perl_thread *
864dbfa3 3344Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3345{
c5be433b 3346#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3347 struct perl_thread *thr;
cea2e8a9 3348#endif
a863c7d1 3349 SV *sv;
199100c8
MB		 3350 SV **svp;
3351 I32 i;
3352
79cb57f6 3353 sv = newSVpvn("", 0);
52e1cb5e
JH		 3354 SvGROW(sv, sizeof(struct perl_thread) + 1);
3355 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3356 thr = (Thread) SvPVX(sv);
949ced2d 3357#ifdef DEBUGGING
52e1cb5e 3358 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3359 PL_markstack = 0;
3360 PL_scopestack = 0;
3361 PL_savestack = 0;
3362 PL_retstack = 0;
3363 PL_dirty = 0;
3364 PL_localizing = 0;
949ced2d
GS		 3365 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3366#else
3367 Zero(thr, 1, struct perl_thread);
3368#endif
199100c8 3369
0b94c7bb 3370 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3371
199100c8 3372 thr->oursv = sv;
cea2e8a9 3373 init_stacks();
a863c7d1 3374
533c011a 3375 PL_curcop = &PL_compiling;
c5be433b 3376 thr->interp = t->interp;
199100c8 3377 thr->cvcache = newHV();
54b9620d 3378 thr->threadsv = newAV();
a863c7d1 3379 thr->specific = newAV();
79cb57f6 3380 thr->errsv = newSVpvn("", 0);
38a03e6e 3381 thr->errhv = newHV();
a863c7d1
MB		 3382 thr->flags = THRf_R_JOINABLE;
3383 MUTEX_INIT(&thr->mutex);
199100c8 3384
d55594ae
GS		 3385 /* top_env needs to be non-zero. It points to an area
3386 in which longjmp() stuff is stored, as C callstack
3387 info there at least is thread specific this has to
3388 be per-thread. Otherwise a 'die' in a thread gives
3389 that thread the C stack of last thread to do an eval {}!
3390 See comments in scope.h
3391 Initialize top entry (as in perl.c for main thread)
3392 */
533c011a
NIS		 3393 PL_start_env.je_prev = NULL;
3394 PL_start_env.je_ret = -1;
3395 PL_start_env.je_mustcatch = TRUE;
3396 PL_top_env = &PL_start_env;
3397
faef0170 3398 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3399 PL_restartop = 0;
3400
b099ddc0
GS		 3401 PL_statname = NEWSV(66,0);
3402 PL_maxscream = -1;
0b94c7bb
GS		 3403 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3404 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3405 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3406 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3407 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3408 PL_regindent = 0;
3409 PL_reginterp_cnt = 0;
3410 PL_lastscream = Nullsv;
3411 PL_screamfirst = 0;
3412 PL_screamnext = 0;
3413 PL_reg_start_tmp = 0;
3414 PL_reg_start_tmpl = 0;
14ed4b74 3415 PL_reg_poscache = Nullch;
b099ddc0
GS		 3416
3417 /* parent thread's data needs to be locked while we make copy */
3418 MUTEX_LOCK(&t->mutex);
3419
312caa8e
CS		 3420 PL_protect = t->Tprotect;
3421
b099ddc0
GS		 3422 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3423 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3424 PL_curstash = t->Tcurstash; /* always be set to main? */
3425
6b88bc9c 3426 PL_tainted = t->Ttainted;
84fee439
NIS		 3427 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3428 PL_nrs = newSVsv(t->Tnrs);
3429 PL_rs = SvREFCNT_inc(PL_nrs);
3430 PL_last_in_gv = Nullgv;
3431 PL_ofslen = t->Tofslen;
3432 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3433 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3434 PL_chopset = t->Tchopset;
3435 PL_formtarget = newSVsv(t->Tformtarget);
3436 PL_bodytarget = newSVsv(t->Tbodytarget);
3437 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3438
54b9620d
MB		 3439 /* Initialise all per-thread SVs that the template thread used */
3440 svp = AvARRAY(t->threadsv);
93965878 3441 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3442 if (*svp && *svp != &PL_sv_undef) {
199100c8 3443 SV *sv = newSVsv(*svp);
54b9620d 3444 av_store(thr->threadsv, i, sv);
533c011a 3445 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3446 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3447 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3448 }
3449 }
940cb80d 3450 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3451
533c011a
NIS		 3452 MUTEX_LOCK(&PL_threads_mutex);
3453 PL_nthreads++;
3454 thr->tid = ++PL_threadnum;
199100c8
MB		 3455 thr->next = t->next;
3456 thr->prev = t;
3457 t->next = thr;
3458 thr->next->prev = thr;
533c011a 3459 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3460
b099ddc0
GS		 3461 /* done copying parent's state */
3462 MUTEX_UNLOCK(&t->mutex);
3463
a863c7d1 3464#ifdef HAVE_THREAD_INTERN
4f63d024 3465 Perl_init_thread_intern(thr);
a863c7d1 3466#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3467 return thr;
3468}
11343788 3469#endif /* USE_THREADS */
760ac839
LW		 3470
3471#ifdef HUGE_VAL
3472/*
3473 * This hack is to force load of "huge" support from libm.a
3474 * So it is in perl for (say) POSIX to use.
3475 * Needed for SunOS with Sun's 'acc' for example.
3476 */
65202027 3477NV
8ac85365 3478Perl_huge(void)
760ac839
LW		 3479{
3480 return HUGE_VAL;
3481}
3482#endif
4e35701f 3483
22239a37
NIS		 3484#ifdef PERL_GLOBAL_STRUCT
3485struct perl_vars *
864dbfa3 3486Perl_GetVars(pTHX)
22239a37 3487{
533c011a 3488 return &PL_Vars;
22239a37 3489}
31fb1209
NIS		 3490#endif
3491
3492char **
864dbfa3 3493Perl_get_op_names(pTHX)
31fb1209 3494{
22c35a8c 3495 return PL_op_name;
31fb1209
NIS		 3496}
3497
3498char **
864dbfa3 3499Perl_get_op_descs(pTHX)
31fb1209 3500{
22c35a8c 3501 return PL_op_desc;
31fb1209 3502}
9e6b2b00
GS		 3503
3504char *
864dbfa3 3505Perl_get_no_modify(pTHX)
9e6b2b00 3506{
22c35a8c 3507 return (char*)PL_no_modify;
9e6b2b00
GS		 3508}
3509
3510U32 *
864dbfa3 3511Perl_get_opargs(pTHX)
9e6b2b00 3512{
22c35a8c 3513 return PL_opargs;
9e6b2b00 3514}
51aa15f3 3515
0cb96387
GS		 3516PPADDR_t*
3517Perl_get_ppaddr(pTHX)
3518{
3519 return &PL_ppaddr;
3520}
3521
a6c40364
GS		 3522#ifndef HAS_GETENV_LEN
3523char *
864dbfa3 3524Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3525{
3526 char *env_trans = PerlEnv_getenv(env_elem);
3527 if (env_trans)
3528 *len = strlen(env_trans);
3529 return env_trans;
f675dbe5
CB		 3530}
3531#endif
3532
dc9e4912
GS		 3533
3534MGVTBL*
864dbfa3 3535Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3536{
3537 MGVTBL* result = Null(MGVTBL*);
3538
3539 switch(vtbl_id) {
3540 case want_vtbl_sv:
3541 result = &PL_vtbl_sv;
3542 break;
3543 case want_vtbl_env:
3544 result = &PL_vtbl_env;
3545 break;
3546 case want_vtbl_envelem:
3547 result = &PL_vtbl_envelem;
3548 break;
3549 case want_vtbl_sig:
3550 result = &PL_vtbl_sig;
3551 break;
3552 case want_vtbl_sigelem:
3553 result = &PL_vtbl_sigelem;
3554 break;
3555 case want_vtbl_pack:
3556 result = &PL_vtbl_pack;
3557 break;
3558 case want_vtbl_packelem:
3559 result = &PL_vtbl_packelem;
3560 break;
3561 case want_vtbl_dbline:
3562 result = &PL_vtbl_dbline;
3563 break;
3564 case want_vtbl_isa:
3565 result = &PL_vtbl_isa;
3566 break;
3567 case want_vtbl_isaelem:
3568 result = &PL_vtbl_isaelem;
3569 break;
3570 case want_vtbl_arylen:
3571 result = &PL_vtbl_arylen;
3572 break;
3573 case want_vtbl_glob:
3574 result = &PL_vtbl_glob;
3575 break;
3576 case want_vtbl_mglob:
3577 result = &PL_vtbl_mglob;
3578 break;
3579 case want_vtbl_nkeys:
3580 result = &PL_vtbl_nkeys;
3581 break;
3582 case want_vtbl_taint:
3583 result = &PL_vtbl_taint;
3584 break;
3585 case want_vtbl_substr:
3586 result = &PL_vtbl_substr;
3587 break;
3588 case want_vtbl_vec:
3589 result = &PL_vtbl_vec;
3590 break;
3591 case want_vtbl_pos:
3592 result = &PL_vtbl_pos;
3593 break;
3594 case want_vtbl_bm:
3595 result = &PL_vtbl_bm;
3596 break;
3597 case want_vtbl_fm:
3598 result = &PL_vtbl_fm;
3599 break;
3600 case want_vtbl_uvar:
3601 result = &PL_vtbl_uvar;
3602 break;
3603#ifdef USE_THREADS
3604 case want_vtbl_mutex:
3605 result = &PL_vtbl_mutex;
3606 break;
3607#endif
3608 case want_vtbl_defelem:
3609 result = &PL_vtbl_defelem;
3610 break;
3611 case want_vtbl_regexp:
3612 result = &PL_vtbl_regexp;
3613 break;
3614 case want_vtbl_regdata:
3615 result = &PL_vtbl_regdata;
3616 break;
3617 case want_vtbl_regdatum:
3618 result = &PL_vtbl_regdatum;
3619 break;
3c90161d 3620#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3621 case want_vtbl_collxfrm:
3622 result = &PL_vtbl_collxfrm;
3623 break;
3c90161d 3624#endif
dc9e4912
GS		 3625 case want_vtbl_amagic:
3626 result = &PL_vtbl_amagic;
3627 break;
3628 case want_vtbl_amagicelem:
3629 result = &PL_vtbl_amagicelem;
3630 break;
810b8aa5
GS		 3631 case want_vtbl_backref:
3632 result = &PL_vtbl_backref;
3633 break;
dc9e4912
GS		 3634 }
3635 return result;
3636}
3637
767df6a1 3638I32
864dbfa3 3639Perl_my_fflush_all(pTHX)
767df6a1
JH		 3640{
3641#ifdef FFLUSH_NULL
ce720889 3642 return PerlIO_flush(NULL);
767df6a1
JH		 3643#else
3644 long open_max = -1;
ed39a0f2 3645# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3646# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3647 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3648# else
767df6a1
JH		 3649# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3650 open_max = sysconf(_SC_OPEN_MAX);
3651# else
3652# ifdef FOPEN_MAX
d2201af2 3653 open_max = FOPEN_MAX;
767df6a1
JH		 3654# else
3655# ifdef OPEN_MAX
d2201af2 3656 open_max = OPEN_MAX;
767df6a1
JH		 3657# else
3658# ifdef _NFILE
d2201af2 3659 open_max = _NFILE;
767df6a1
JH		 3660# endif
3661# endif
3662# endif
3663# endif
d2201af2 3664# endif
767df6a1
JH		 3665 if (open_max > 0) {
3666 long i;
3667 for (i = 0; i < open_max; i++)
d2201af2
AD		 3668 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3669 STDIO_STREAM_ARRAY[i]._file < open_max &&
3670 STDIO_STREAM_ARRAY[i]._flag)
3671 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);