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Create a struct for all perls globals (as an option)
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, 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"
8d063cd8 16#include "perl.h"
62b28dd9 17
6eb13c3b 18#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 19#include <signal.h>
62b28dd9 20#endif
a687059c 21
36477c24
PP
22#ifndef SIG_ERR
23# define SIG_ERR ((Sighandler_t) -1)
24#endif
25
bd4080b3 26/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 27#ifdef I_UNISTD
8990e307
LW
28# include <unistd.h>
29#endif
30
a687059c
LW
31#ifdef I_VFORK
32# include <vfork.h>
33#endif
34
94b6baf5
AD
35/* Put this after #includes because fork and vfork prototypes may
36 conflict.
37*/
38#ifndef HAS_VFORK
39# define vfork fork
40#endif
41
fe14fcc3
LW
42#ifdef I_FCNTL
43# include <fcntl.h>
44#endif
45#ifdef I_SYS_FILE
46# include <sys/file.h>
47#endif
48
ff68c719
PP
49#ifdef I_SYS_WAIT
50# include <sys/wait.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e
LW
55#ifdef LEAKTEST
56static void xstat _((void));
57#endif
58
a863c7d1
MB
59#ifdef USE_THREADS
60static U32 threadnum = 0;
61#endif /* USE_THREADS */
62
55497cff 63#ifndef MYMALLOC
de3bb511 64
8d063cd8
LW
65/* paranoid version of malloc */
66
a687059c
LW
67/* NOTE: Do not call the next three routines directly. Use the macros
68 * in handy.h, so that we can easily redefine everything to do tracking of
69 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 70 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
71 */
72
bd4080b3 73Malloc_t
f0f333f4 74safemalloc(MEM_SIZE size)
8d063cd8 75{
bd4080b3 76 Malloc_t ptr;
55497cff 77#ifdef HAS_64K_LIMIT
62b28dd9 78 if (size > 0xffff) {
760ac839 79 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW
83#ifdef DEBUGGING
84 if ((long)size < 0)
463ee0b2 85 croak("panic: malloc");
34de22dd 86#endif
8d063cd8 87 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 88#if !(defined(I286) || defined(atarist))
760ac839 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 90#else
760ac839 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
92#endif
93 if (ptr != Nullch)
94 return ptr;
7c0587c8
LW
95 else if (nomemok)
96 return Nullch;
8d063cd8 97 else {
760ac839 98 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 99 my_exit(1);
4e35701f 100 return Nullch;
8d063cd8
LW
101 }
102 /*NOTREACHED*/
103}
104
105/* paranoid version of realloc */
106
bd4080b3 107Malloc_t
f0f333f4 108saferealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 109{
bd4080b3 110 Malloc_t ptr;
ecfc5424 111#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
bd4080b3 112 Malloc_t realloc();
ecfc5424 113#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 114
55497cff 115#ifdef HAS_64K_LIMIT
5f05dabc
PP
116 if (size > 0xffff) {
117 PerlIO_printf(PerlIO_stderr(),
118 "Reallocation too large: %lx\n", size) FLUSH;
119 my_exit(1);
120 }
55497cff 121#endif /* HAS_64K_LIMIT */
378cc40b 122 if (!where)
463ee0b2 123 croak("Null realloc");
34de22dd
LW
124#ifdef DEBUGGING
125 if ((long)size < 0)
463ee0b2 126 croak("panic: realloc");
34de22dd 127#endif
8d063cd8 128 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
79072805
LW
129
130#if !(defined(I286) || defined(atarist))
131 DEBUG_m( {
760ac839
LW
132 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
133 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
134 } )
135#else
136 DEBUG_m( {
760ac839
LW
137 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
138 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 139 } )
8d063cd8 140#endif
79072805 141
8d063cd8
LW
142 if (ptr != Nullch)
143 return ptr;
7c0587c8
LW
144 else if (nomemok)
145 return Nullch;
8d063cd8 146 else {
760ac839 147 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 148 my_exit(1);
4e35701f 149 return Nullch;
8d063cd8
LW
150 }
151 /*NOTREACHED*/
152}
153
154/* safe version of free */
155
54310121 156Free_t
f0f333f4 157safefree(Malloc_t where)
8d063cd8 158{
79072805 159#if !(defined(I286) || defined(atarist))
f0f333f4 160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,an++));
79072805 161#else
f0f333f4 162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,an++));
8d063cd8 163#endif
378cc40b 164 if (where) {
de3bb511 165 /*SUPPRESS 701*/
378cc40b
LW
166 free(where);
167 }
8d063cd8
LW
168}
169
1050c9ca
PP
170/* safe version of calloc */
171
bd4080b3 172Malloc_t
f0f333f4 173safecalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 174{
bd4080b3 175 Malloc_t ptr;
1050c9ca 176
55497cff 177#ifdef HAS_64K_LIMIT
5f05dabc
PP
178 if (size * count > 0xffff) {
179 PerlIO_printf(PerlIO_stderr(),
180 "Allocation too large: %lx\n", size * count) FLUSH;
181 my_exit(1);
182 }
55497cff 183#endif /* HAS_64K_LIMIT */
1050c9ca
PP
184#ifdef DEBUGGING
185 if ((long)size < 0 || (long)count < 0)
186 croak("panic: calloc");
187#endif
0b7c1c42
GS
188 size *= count;
189 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 190#if !(defined(I286) || defined(atarist))
fb73857a 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 192#else
fb73857a 193 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 194#endif
1050c9ca
PP
195 if (ptr != Nullch) {
196 memset((void*)ptr, 0, size);
197 return ptr;
198 }
199 else if (nomemok)
200 return Nullch;
201 else {
760ac839 202 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca 203 my_exit(1);
4e35701f 204 return Nullch;
1050c9ca
PP
205 }
206 /*NOTREACHED*/
207}
208
55497cff 209#endif /* !MYMALLOC */
de3bb511 210
a687059c
LW
211#ifdef LEAKTEST
212
213#define ALIGN sizeof(long)
8d063cd8 214
bd4080b3 215Malloc_t
f0f333f4 216safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 217{
bd4080b3 218 register Malloc_t where;
8d063cd8 219
a687059c
LW
220 where = safemalloc(size + ALIGN);
221 xcount[x]++;
222 where[0] = x % 100;
223 where[1] = x / 100;
224 return where + ALIGN;
8d063cd8 225}
8d063cd8 226
bd4080b3 227Malloc_t
f0f333f4 228safexrealloc(Malloc_t where, MEM_SIZE size)
a687059c 229{
bd4080b3 230 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
a0d0e21e 231 return new + ALIGN;
a687059c
LW
232}
233
234void
f0f333f4 235safexfree(Malloc_t where)
a687059c 236{
79072805 237 I32 x;
a687059c
LW
238
239 if (!where)
240 return;
241 where -= ALIGN;
242 x = where[0] + 100 * where[1];
243 xcount[x]--;
244 safefree(where);
245}
246
bd4080b3 247Malloc_t
f0f333f4 248safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 249{
bd4080b3 250 register Malloc_t where;
1050c9ca
PP
251
252 where = safexmalloc(x, size * count + ALIGN);
253 xcount[x]++;
254 memset((void*)where + ALIGN, 0, size * count);
255 where[0] = x % 100;
256 where[1] = x / 100;
257 return where + ALIGN;
258}
259
7c0587c8 260static void
f0f333f4 261xstat(void)
8d063cd8 262{
79072805 263 register I32 i;
8d063cd8 264
a687059c 265 for (i = 0; i < MAXXCOUNT; i++) {
de3bb511 266 if (xcount[i] > lastxcount[i]) {
760ac839 267 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
a687059c 268 lastxcount[i] = xcount[i];
8d063cd8
LW
269 }
270 }
8d063cd8 271}
a687059c
LW
272
273#endif /* LEAKTEST */
8d063cd8
LW
274
275/* copy a string up to some (non-backslashed) delimiter, if any */
276
277char *
8ac85365 278delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 279{
fc36a67e
PP
280 register I32 tolen;
281 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
282 if (*from == '\\') {
283 if (from[1] == delim)
284 from++;
fc36a67e
PP
285 else {
286 if (to < toend)
287 *to++ = *from;
288 tolen++;
289 from++;
290 }
378cc40b 291 }
bedebaa5 292 else if (*from == delim)
8d063cd8 293 break;
fc36a67e
PP
294 if (to < toend)
295 *to++ = *from;
8d063cd8 296 }
bedebaa5
CS
297 if (to < toend)
298 *to = '\0';
fc36a67e 299 *retlen = tolen;
8d063cd8
LW
300 return from;
301}
302
303/* return ptr to little string in big string, NULL if not found */
378cc40b 304/* This routine was donated by Corey Satten. */
8d063cd8
LW
305
306char *
8ac85365 307instr(register char *big, register char *little)
378cc40b
LW
308{
309 register char *s, *x;
79072805 310 register I32 first;
378cc40b 311
a687059c
LW
312 if (!little)
313 return big;
314 first = *little++;
378cc40b
LW
315 if (!first)
316 return big;
317 while (*big) {
318 if (*big++ != first)
319 continue;
320 for (x=big,s=little; *s; /**/ ) {
321 if (!*x)
322 return Nullch;
323 if (*s++ != *x++) {
324 s--;
325 break;
326 }
327 }
328 if (!*s)
329 return big-1;
330 }
331 return Nullch;
332}
8d063cd8 333
a687059c
LW
334/* same as instr but allow embedded nulls */
335
336char *
8ac85365 337ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 338{
a687059c 339 register char *s, *x;
79072805 340 register I32 first = *little;
a687059c 341 register char *littleend = lend;
378cc40b 342
a0d0e21e 343 if (!first && little >= littleend)
a687059c 344 return big;
de3bb511
LW
345 if (bigend - big < littleend - little)
346 return Nullch;
a687059c
LW
347 bigend -= littleend - little++;
348 while (big <= bigend) {
349 if (*big++ != first)
350 continue;
351 for (x=big,s=little; s < littleend; /**/ ) {
352 if (*s++ != *x++) {
353 s--;
354 break;
355 }
356 }
357 if (s >= littleend)
358 return big-1;
378cc40b 359 }
a687059c
LW
360 return Nullch;
361}
362
363/* reverse of the above--find last substring */
364
365char *
8ac85365 366rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
367{
368 register char *bigbeg;
369 register char *s, *x;
79072805 370 register I32 first = *little;
a687059c
LW
371 register char *littleend = lend;
372
a0d0e21e 373 if (!first && little >= littleend)
a687059c
LW
374 return bigend;
375 bigbeg = big;
376 big = bigend - (littleend - little++);
377 while (big >= bigbeg) {
378 if (*big-- != first)
379 continue;
380 for (x=big+2,s=little; s < littleend; /**/ ) {
381 if (*s++ != *x++) {
382 s--;
383 break;
384 }
385 }
386 if (s >= littleend)
387 return big+1;
378cc40b 388 }
a687059c 389 return Nullch;
378cc40b 390}
a687059c 391
bbce6d69
PP
392/*
393 * Set up for a new ctype locale.
394 */
55497cff 395void
8ac85365 396perl_new_ctype(char *newctype)
ef7eada9 397{
36477c24
PP
398#ifdef USE_LOCALE_CTYPE
399
bbce6d69 400 int i;
ef7eada9 401
bbce6d69
PP
402 for (i = 0; i < 256; i++) {
403 if (isUPPER_LC(i))
404 fold_locale[i] = toLOWER_LC(i);
405 else if (isLOWER_LC(i))
406 fold_locale[i] = toUPPER_LC(i);
407 else
408 fold_locale[i] = i;
409 }
bbce6d69 410
36477c24
PP
411#endif /* USE_LOCALE_CTYPE */
412}
bbce6d69
PP
413
414/*
415 * Set up for a new collation locale.
416 */
417void
8ac85365 418perl_new_collate(char *newcoll)
bbce6d69 419{
36477c24
PP
420#ifdef USE_LOCALE_COLLATE
421
bbce6d69
PP
422 if (! newcoll) {
423 if (collation_name) {
424 ++collation_ix;
425 Safefree(collation_name);
426 collation_name = NULL;
427 collation_standard = TRUE;
bbce6d69
PP
428 collxfrm_base = 0;
429 collxfrm_mult = 2;
bbce6d69
PP
430 }
431 return;
432 }
433
434 if (! collation_name || strNE(collation_name, newcoll)) {
435 ++collation_ix;
436 Safefree(collation_name);
437 collation_name = savepv(newcoll);
ff68c719 438 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 439
bbce6d69
PP
440 {
441 /* 2: at most so many chars ('a', 'b'). */
442 /* 50: surely no system expands a char more. */
443#define XFRMBUFSIZE (2 * 50)
444 char xbuf[XFRMBUFSIZE];
445 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
446 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
447 SSize_t mult = fb - fa;
448 if (mult < 1)
449 croak("strxfrm() gets absurd");
450 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
451 collxfrm_mult = mult;
452 }
bbce6d69 453 }
bbce6d69 454
36477c24
PP
455#endif /* USE_LOCALE_COLLATE */
456}
bbce6d69
PP
457
458/*
459 * Set up for a new numeric locale.
460 */
461void
8ac85365 462perl_new_numeric(char *newnum)
bbce6d69 463{
36477c24
PP
464#ifdef USE_LOCALE_NUMERIC
465
bbce6d69
PP
466 if (! newnum) {
467 if (numeric_name) {
468 Safefree(numeric_name);
469 numeric_name = NULL;
470 numeric_standard = TRUE;
471 numeric_local = TRUE;
472 }
473 return;
474 }
475
476 if (! numeric_name || strNE(numeric_name, newnum)) {
477 Safefree(numeric_name);
478 numeric_name = savepv(newnum);
ff68c719 479 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
480 numeric_local = TRUE;
481 }
36477c24
PP
482
483#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
484}
485
486void
8ac85365 487perl_set_numeric_standard(void)
bbce6d69 488{
5f05dabc
PP
489#ifdef USE_LOCALE_NUMERIC
490
bbce6d69
PP
491 if (! numeric_standard) {
492 setlocale(LC_NUMERIC, "C");
493 numeric_standard = TRUE;
494 numeric_local = FALSE;
495 }
5f05dabc
PP
496
497#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
498}
499
500void
8ac85365 501perl_set_numeric_local(void)
bbce6d69 502{
5f05dabc
PP
503#ifdef USE_LOCALE_NUMERIC
504
bbce6d69
PP
505 if (! numeric_local) {
506 setlocale(LC_NUMERIC, numeric_name);
507 numeric_standard = FALSE;
508 numeric_local = TRUE;
509 }
bbce6d69 510
36477c24 511#endif /* USE_LOCALE_NUMERIC */
5f05dabc 512}
36477c24 513
bbce6d69 514
36477c24
PP
515/*
516 * Initialize locale awareness.
517 */
f0c5b223 518int
8ac85365 519perl_init_i18nl10n(int printwarn)
f0c5b223
TB
520{
521 int ok = 1;
522 /* returns
523 * 1 = set ok or not applicable,
524 * 0 = fallback to C locale,
525 * -1 = fallback to C locale failed
526 */
bbce6d69 527
36477c24 528#ifdef USE_LOCALE
bbce6d69 529
36477c24 530#ifdef USE_LOCALE_CTYPE
bbce6d69 531 char *curctype = NULL;
36477c24
PP
532#endif /* USE_LOCALE_CTYPE */
533#ifdef USE_LOCALE_COLLATE
bbce6d69 534 char *curcoll = NULL;
36477c24
PP
535#endif /* USE_LOCALE_COLLATE */
536#ifdef USE_LOCALE_NUMERIC
bbce6d69 537 char *curnum = NULL;
36477c24 538#endif /* USE_LOCALE_NUMERIC */
02b32252 539 char *lc_all = getenv("LC_ALL");
5f05dabc 540 char *lang = getenv("LANG");
bbce6d69 541 bool setlocale_failure = FALSE;
f0c5b223 542
02b32252
CS
543#ifdef LOCALE_ENVIRON_REQUIRED
544
545 /*
546 * Ultrix setlocale(..., "") fails if there are no environment
547 * variables from which to get a locale name.
548 */
549
550 bool done = FALSE;
551
552#ifdef LC_ALL
553 if (lang) {
554 if (setlocale(LC_ALL, ""))
555 done = TRUE;
556 else
557 setlocale_failure = TRUE;
558 }
559 if (!setlocale_failure)
560#endif /* LC_ALL */
561 {
562#ifdef USE_LOCALE_CTYPE
563 if (! (curctype = setlocale(LC_CTYPE,
564 (!done && (lang || getenv("LC_CTYPE")))
565 ? "" : Nullch)))
566 setlocale_failure = TRUE;
567#endif /* USE_LOCALE_CTYPE */
568#ifdef USE_LOCALE_COLLATE
569 if (! (curcoll = setlocale(LC_COLLATE,
570 (!done && (lang || getenv("LC_COLLATE")))
571 ? "" : Nullch)))
572 setlocale_failure = TRUE;
573#endif /* USE_LOCALE_COLLATE */
574#ifdef USE_LOCALE_NUMERIC
575 if (! (curnum = setlocale(LC_NUMERIC,
576 (!done && (lang || getenv("LC_NUMERIC")))
577 ? "" : Nullch)))
578 setlocale_failure = TRUE;
579#endif /* USE_LOCALE_NUMERIC */
580 }
581
582#else /* !LOCALE_ENVIRON_REQUIRED */
583
bbce6d69 584#ifdef LC_ALL
5f05dabc 585
bbce6d69
PP
586 if (! setlocale(LC_ALL, ""))
587 setlocale_failure = TRUE;
5f05dabc
PP
588 else {
589#ifdef USE_LOCALE_CTYPE
590 curctype = setlocale(LC_CTYPE, Nullch);
591#endif /* USE_LOCALE_CTYPE */
592#ifdef USE_LOCALE_COLLATE
593 curcoll = setlocale(LC_COLLATE, Nullch);
594#endif /* USE_LOCALE_COLLATE */
595#ifdef USE_LOCALE_NUMERIC
596 curnum = setlocale(LC_NUMERIC, Nullch);
597#endif /* USE_LOCALE_NUMERIC */
598 }
599
600#else /* !LC_ALL */
bbce6d69 601
36477c24 602#ifdef USE_LOCALE_CTYPE
5f05dabc 603 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 604 setlocale_failure = TRUE;
36477c24
PP
605#endif /* USE_LOCALE_CTYPE */
606#ifdef USE_LOCALE_COLLATE
5f05dabc 607 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 608 setlocale_failure = TRUE;
36477c24
PP
609#endif /* USE_LOCALE_COLLATE */
610#ifdef USE_LOCALE_NUMERIC
5f05dabc 611 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 612 setlocale_failure = TRUE;
36477c24 613#endif /* USE_LOCALE_NUMERIC */
bbce6d69 614
5f05dabc
PP
615#endif /* LC_ALL */
616
02b32252
CS
617#endif /* !LOCALE_ENVIRON_REQUIRED */
618
5f05dabc
PP
619 if (setlocale_failure) {
620 char *p;
621 bool locwarn = (printwarn > 1 ||
622 printwarn &&
623 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 624
5f05dabc
PP
625 if (locwarn) {
626#ifdef LC_ALL
627
628 PerlIO_printf(PerlIO_stderr(),
629 "perl: warning: Setting locale failed.\n");
630
631#else /* !LC_ALL */
632
ef7eada9 633 PerlIO_printf(PerlIO_stderr(),
bbce6d69 634 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 635#ifdef USE_LOCALE_CTYPE
bbce6d69 636 if (! curctype)
5f05dabc 637 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
638#endif /* USE_LOCALE_CTYPE */
639#ifdef USE_LOCALE_COLLATE
bbce6d69 640 if (! curcoll)
5f05dabc 641 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
642#endif /* USE_LOCALE_COLLATE */
643#ifdef USE_LOCALE_NUMERIC
bbce6d69 644 if (! curnum)
5f05dabc 645 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 646#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
647 PerlIO_printf(PerlIO_stderr(), "\n");
648
5f05dabc
PP
649#endif /* LC_ALL */
650
760ac839 651 PerlIO_printf(PerlIO_stderr(),
bbce6d69 652 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
653
654 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
655 "\tLC_ALL = %c%s%c,\n",
656 lc_all ? '"' : '(',
657 lc_all ? lc_all : "unset",
658 lc_all ? '"' : ')');
5f05dabc
PP
659
660 {
661 char **e;
662 for (e = environ; *e; e++) {
663 if (strnEQ(*e, "LC_", 3)
664 && strnNE(*e, "LC_ALL=", 7)
665 && (p = strchr(*e, '=')))
666 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 667 (int)(p - *e), *e, p + 1);
5f05dabc
PP
668 }
669 }
670
ef7eada9 671 PerlIO_printf(PerlIO_stderr(),
bbce6d69 672 "\tLANG = %c%s%c\n",
5f05dabc 673 lang ? '"' : '(',
bbce6d69
PP
674 lang ? lang : "unset",
675 lang ? '"' : ')');
ef7eada9 676
bbce6d69
PP
677 PerlIO_printf(PerlIO_stderr(),
678 " are supported and installed on your system.\n");
5f05dabc 679 }
ef7eada9 680
5f05dabc
PP
681#ifdef LC_ALL
682
683 if (setlocale(LC_ALL, "C")) {
684 if (locwarn)
685 PerlIO_printf(PerlIO_stderr(),
686 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 687 ok = 0;
ef7eada9 688 }
5f05dabc
PP
689 else {
690 if (locwarn)
691 PerlIO_printf(PerlIO_stderr(),
692 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
693 ok = -1;
694 }
bbce6d69 695
5f05dabc
PP
696#else /* ! LC_ALL */
697
698 if (0
36477c24 699#ifdef USE_LOCALE_CTYPE
5f05dabc 700 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
701#endif /* USE_LOCALE_CTYPE */
702#ifdef USE_LOCALE_COLLATE
5f05dabc 703 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
704#endif /* USE_LOCALE_COLLATE */
705#ifdef USE_LOCALE_NUMERIC
5f05dabc 706 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 707#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
708 )
709 {
710 if (locwarn)
bbce6d69 711 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
712 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
713 ok = -1;
bbce6d69 714 }
5f05dabc 715
bbce6d69 716#endif /* ! LC_ALL */
5f05dabc
PP
717
718#ifdef USE_LOCALE_CTYPE
719 curctype = setlocale(LC_CTYPE, Nullch);
720#endif /* USE_LOCALE_CTYPE */
721#ifdef USE_LOCALE_COLLATE
722 curcoll = setlocale(LC_COLLATE, Nullch);
723#endif /* USE_LOCALE_COLLATE */
724#ifdef USE_LOCALE_NUMERIC
725 curnum = setlocale(LC_NUMERIC, Nullch);
726#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
727 }
728
36477c24 729#ifdef USE_LOCALE_CTYPE
bbce6d69 730 perl_new_ctype(curctype);
36477c24 731#endif /* USE_LOCALE_CTYPE */
bbce6d69 732
36477c24 733#ifdef USE_LOCALE_COLLATE
bbce6d69 734 perl_new_collate(curcoll);
36477c24 735#endif /* USE_LOCALE_COLLATE */
bbce6d69 736
36477c24 737#ifdef USE_LOCALE_NUMERIC
bbce6d69 738 perl_new_numeric(curnum);
36477c24 739#endif /* USE_LOCALE_NUMERIC */
ef7eada9 740
36477c24 741#endif /* USE_LOCALE */
ef7eada9 742
f0c5b223
TB
743 return ok;
744}
745
bbce6d69
PP
746/* Backwards compatibility. */
747int
8ac85365 748perl_init_i18nl14n(int printwarn)
bbce6d69 749{
5f05dabc 750 return perl_init_i18nl10n(printwarn);
bbce6d69 751}
ef7eada9 752
36477c24 753#ifdef USE_LOCALE_COLLATE
ef7eada9 754
bbce6d69
PP
755/*
756 * mem_collxfrm() is a bit like strxfrm() but with two important
757 * differences. First, it handles embedded NULs. Second, it allocates
758 * a bit more memory than needed for the transformed data itself.
759 * The real transformed data begins at offset sizeof(collationix).
760 * Please see sv_collxfrm() to see how this is used.
761 */
762char *
8ac85365 763mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
764{
765 char *xbuf;
766 STRLEN xalloc, xin, xout;
767
768 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
769 /* the +1 is for the terminating NUL. */
770
771 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
772 New(171, xbuf, xalloc, char);
773 if (! xbuf)
774 goto bad;
775
776 *(U32*)xbuf = collation_ix;
777 xout = sizeof(collation_ix);
778 for (xin = 0; xin < len; ) {
779 SSize_t xused;
780
781 for (;;) {
782 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
783 if (xused == -1)
784 goto bad;
785 if (xused < xalloc - xout)
786 break;
787 xalloc = (2 * xalloc) + 1;
788 Renew(xbuf, xalloc, char);
789 if (! xbuf)
790 goto bad;
791 }
ef7eada9 792
bbce6d69
PP
793 xin += strlen(s + xin) + 1;
794 xout += xused;
795
796 /* Embedded NULs are understood but silently skipped
797 * because they make no sense in locale collation. */
798 }
ef7eada9 799
bbce6d69
PP
800 xbuf[xout] = '\0';
801 *xlen = xout - sizeof(collation_ix);
802 return xbuf;
803
804 bad:
805 Safefree(xbuf);
806 *xlen = 0;
807 return NULL;
ef7eada9
JH
808}
809
36477c24 810#endif /* USE_LOCALE_COLLATE */
bbce6d69 811
378cc40b 812void
8ac85365 813fbm_compile(SV *sv)
378cc40b 814{
a687059c
LW
815 register unsigned char *s;
816 register unsigned char *table;
79072805
LW
817 register U32 i;
818 register U32 len = SvCUR(sv);
819 I32 rarest = 0;
820 U32 frequency = 256;
821
c277df42
IZ
822 sv_upgrade(sv, SVt_PVBM);
823 if (len > 255 || len == 0) /* TAIL might be on on a zero-length string. */
748a9306 824 return; /* can't have offsets that big */
79072805 825 Sv_Grow(sv,len+258);
463ee0b2 826 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
827 s = table - 2;
828 for (i = 0; i < 256; i++) {
378cc40b
LW
829 table[i] = len;
830 }
831 i = 0;
463ee0b2 832 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 833 {
bbce6d69
PP
834 if (table[*s] == len)
835 table[*s] = i;
378cc40b
LW
836 s--,i++;
837 }
bbce6d69 838 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 839 SvVALID_on(sv);
378cc40b 840
463ee0b2 841 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
842 for (i = 0; i < len; i++) {
843 if (freq[s[i]] < frequency) {
844 rarest = i;
845 frequency = freq[s[i]];
378cc40b
LW
846 }
847 }
79072805
LW
848 BmRARE(sv) = s[rarest];
849 BmPREVIOUS(sv) = rarest;
760ac839 850 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
851}
852
378cc40b 853char *
8ac85365 854fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr)
378cc40b 855{
a687059c 856 register unsigned char *s;
79072805
LW
857 register I32 tmp;
858 register I32 littlelen;
a687059c
LW
859 register unsigned char *little;
860 register unsigned char *table;
861 register unsigned char *olds;
862 register unsigned char *oldlittle;
378cc40b 863
79072805 864 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
865 STRLEN len;
866 char *l = SvPV(littlestr,len);
c277df42
IZ
867 if (!len) {
868 if (SvTAIL(littlestr)) {
869 if (bigend > big && bigend[-1] == '\n')
161b471a 870 return (char *)(bigend - 1);
c277df42 871 else
161b471a 872 return (char *) bigend;
c277df42 873 }
d48672a2 874 return (char*)big;
c277df42 875 }
a0d0e21e 876 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 877 }
378cc40b 878
79072805
LW
879 littlelen = SvCUR(littlestr);
880 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
881 if (littlelen > bigend - big)
882 return Nullch;
463ee0b2 883 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 884 s = bigend - littlelen;
36477c24 885 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
886 return (char*)s; /* how sweet it is */
887 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
888 && s > big) {
889 s--;
36477c24 890 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 891 return (char*)s;
a687059c 892 }
bbce6d69 893 return Nullch;
a687059c 894 }
463ee0b2 895 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
896 if (--littlelen >= bigend - big)
897 return Nullch;
898 s = big + littlelen;
a687059c 899 oldlittle = little = table - 2;
bbce6d69
PP
900 if (s < bigend) {
901 top2:
902 /*SUPPRESS 560*/
903 if (tmp = table[*s]) {
62b28dd9 904#ifdef POINTERRIGOR
bbce6d69
PP
905 if (bigend - s > tmp) {
906 s += tmp;
907 goto top2;
908 }
62b28dd9 909#else
bbce6d69
PP
910 if ((s += tmp) < bigend)
911 goto top2;
62b28dd9 912#endif
bbce6d69 913 return Nullch;
a687059c 914 }
bbce6d69
PP
915 else {
916 tmp = littlelen; /* less expensive than calling strncmp() */
917 olds = s;
918 while (tmp--) {
919 if (*--s == *--little)
920 continue;
c277df42 921 differ:
bbce6d69
PP
922 s = olds + 1; /* here we pay the price for failure */
923 little = oldlittle;
924 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 925 goto top2;
62b28dd9 926 return Nullch;
a687059c 927 }
c277df42
IZ
928 if (SvTAIL(littlestr) /* automatically multiline */
929 && olds + 1 != bigend
930 && olds[1] != '\n')
931 goto differ;
bbce6d69 932 return (char *)s;
378cc40b
LW
933 }
934 }
935 return Nullch;
936}
937
c277df42
IZ
938/* start_shift, end_shift are positive quantities which give offsets
939 of ends of some substring of bigstr.
940 If `last' we want the last occurence.
941 old_posp is the way of communication between consequent calls if
942 the next call needs to find the .
943 The initial *old_posp should be -1.
944 Note that we do not take into account SvTAIL, so it may give wrong
945 positives if _ALL flag is set.
946 */
947
378cc40b 948char *
c277df42 949screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 950{
a687059c
LW
951 register unsigned char *s, *x;
952 register unsigned char *big;
79072805
LW
953 register I32 pos;
954 register I32 previous;
955 register I32 first;
a687059c 956 register unsigned char *little;
c277df42 957 register I32 stop_pos;
a687059c 958 register unsigned char *littleend;
c277df42 959 I32 found = 0;
378cc40b 960
c277df42
IZ
961 if (*old_posp == -1
962 ? (pos = screamfirst[BmRARE(littlestr)]) < 0
963 : (((pos = *old_posp), pos += screamnext[pos]) == 0))
378cc40b 964 return Nullch;
463ee0b2 965 little = (unsigned char *)(SvPVX(littlestr));
79072805 966 littleend = little + SvCUR(littlestr);
378cc40b 967 first = *little++;
c277df42 968 /* The value of pos we can start at: */
79072805 969 previous = BmPREVIOUS(littlestr);
463ee0b2 970 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
971 /* The value of pos we can stop at: */
972 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
973 if (previous + start_shift > stop_pos) return Nullch;
974 while (pos < previous + start_shift) {
378cc40b
LW
975 if (!(pos += screamnext[pos]))
976 return Nullch;
977 }
de3bb511 978#ifdef POINTERRIGOR
bbce6d69 979 do {
c277df42 980 if (pos >= stop_pos) return Nullch;
bbce6d69
PP
981 if (big[pos-previous] != first)
982 continue;
983 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
984 if (*s++ != *x++) {
985 s--;
986 break;
de3bb511 987 }
bbce6d69 988 }
c277df42
IZ
989 if (s == littleend) {
990 *old_posp = pos;
991 if (!last) return (char *)(big+pos-previous);
992 found = 1;
993 }
bbce6d69 994 } while ( pos += screamnext[pos] );
c277df42 995 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
996#else /* !POINTERRIGOR */
997 big -= previous;
bbce6d69 998 do {
c277df42 999 if (pos >= stop_pos) return Nullch;
bbce6d69
PP
1000 if (big[pos] != first)
1001 continue;
1002 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1003 if (*s++ != *x++) {
1004 s--;
1005 break;
378cc40b 1006 }
bbce6d69 1007 }
c277df42
IZ
1008 if (s == littleend) {
1009 *old_posp = pos;
1010 if (!last) return (char *)(big+pos);
1011 found = 1;
1012 }
bbce6d69 1013 } while ( pos += screamnext[pos] );
c277df42 1014 return (last && found) ? (char *)(big+(*old_posp)) : Nullch;
de3bb511 1015#endif /* POINTERRIGOR */
8d063cd8
LW
1016}
1017
79072805 1018I32
8ac85365 1019ibcmp(char *s1, char *s2, register I32 len)
79072805 1020{
bbce6d69
PP
1021 register U8 *a = (U8 *)s1;
1022 register U8 *b = (U8 *)s2;
79072805 1023 while (len--) {
bbce6d69
PP
1024 if (*a != *b && *a != fold[*b])
1025 return 1;
1026 a++,b++;
1027 }
1028 return 0;
1029}
1030
1031I32
8ac85365 1032ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
1033{
1034 register U8 *a = (U8 *)s1;
1035 register U8 *b = (U8 *)s2;
1036 while (len--) {
1037 if (*a != *b && *a != fold_locale[*b])
1038 return 1;
1039 a++,b++;
79072805
LW
1040 }
1041 return 0;
1042}
1043
8d063cd8
LW
1044/* copy a string to a safe spot */
1045
1046char *
8ac85365 1047savepv(char *sv)
8d063cd8 1048{
a687059c 1049 register char *newaddr;
8d063cd8 1050
79072805
LW
1051 New(902,newaddr,strlen(sv)+1,char);
1052 (void)strcpy(newaddr,sv);
8d063cd8
LW
1053 return newaddr;
1054}
1055
a687059c
LW
1056/* same thing but with a known length */
1057
1058char *
8ac85365 1059savepvn(char *sv, register I32 len)
a687059c
LW
1060{
1061 register char *newaddr;
1062
1063 New(903,newaddr,len+1,char);
79072805 1064 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1065 newaddr[len] = '\0'; /* is now */
1066 return newaddr;
1067}
1068
fc36a67e
PP
1069/* the SV for form() and mess() is not kept in an arena */
1070
1071static SV *
8ac85365 1072mess_alloc(void)
fc36a67e
PP
1073{
1074 SV *sv;
1075 XPVMG *any;
1076
1077 /* Create as PVMG now, to avoid any upgrading later */
1078 New(905, sv, 1, SV);
1079 Newz(905, any, 1, XPVMG);
1080 SvFLAGS(sv) = SVt_PVMG;
1081 SvANY(sv) = (void*)any;
1082 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1083 return sv;
1084}
1085
a0d0e21e 1086#ifdef I_STDARG
8990e307 1087char *
46fc3d4c 1088form(const char* pat, ...)
a687059c
LW
1089#else
1090/*VARARGS0*/
de3bb511 1091char *
46fc3d4c 1092form(pat, va_alist)
71be2cbc 1093 const char *pat;
46fc3d4c 1094 va_dcl
8990e307
LW
1095#endif
1096{
46fc3d4c
PP
1097 va_list args;
1098#ifdef I_STDARG
1099 va_start(args, pat);
a687059c 1100#else
46fc3d4c 1101 va_start(args);
d48672a2 1102#endif
fc36a67e
PP
1103 if (!mess_sv)
1104 mess_sv = mess_alloc();
1105 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1106 va_end(args);
fc36a67e 1107 return SvPVX(mess_sv);
46fc3d4c 1108}
a687059c 1109
46fc3d4c 1110char *
8ac85365 1111mess(const char *pat, va_list *args)
46fc3d4c
PP
1112{
1113 SV *sv;
1114 static char dgd[] = " during global destruction.\n";
1115
46fc3d4c 1116 if (!mess_sv)
fc36a67e 1117 mess_sv = mess_alloc();
46fc3d4c 1118 sv = mess_sv;
fc36a67e 1119 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1120 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1121 dTHR;
2304df62 1122 if (dirty)
46fc3d4c 1123 sv_catpv(sv, dgd);
2304df62 1124 else {
46fc3d4c 1125 if (curcop->cop_line)
fc36a67e 1126 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1127 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1128 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1129 bool line_mode = (RsSIMPLE(rs) &&
1130 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1131 sv_catpvf(sv, ", <%s> %s %ld",
1132 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1133 line_mode ? "line" : "chunk",
1134 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1135 }
46fc3d4c 1136 sv_catpv(sv, ".\n");
a687059c 1137 }
a687059c 1138 }
46fc3d4c 1139 return SvPVX(sv);
a687059c
LW
1140}
1141
ecfc5424 1142#ifdef I_STDARG
36477c24 1143OP *
71be2cbc 1144die(const char* pat, ...)
36477c24
PP
1145#else
1146/*VARARGS0*/
1147OP *
1148die(pat, va_alist)
71be2cbc 1149 const char *pat;
36477c24
PP
1150 va_dcl
1151#endif
1152{
5dc0d613 1153 dTHR;
36477c24
PP
1154 va_list args;
1155 char *message;
36477c24
PP
1156 int was_in_eval = in_eval;
1157 HV *stash;
1158 GV *gv;
1159 CV *cv;
1160
57d3b86d 1161#ifdef USE_THREADS
199100c8
MB
1162 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1163 "%p: die: curstack = %p, mainstack = %p\n",
1164 thr, curstack, mainstack));
57d3b86d 1165#endif /* USE_THREADS */
36477c24
PP
1166 /* We have to switch back to mainstack or die_where may try to pop
1167 * the eval block from the wrong stack if die is being called from a
1168 * signal handler. - dkindred@cs.cmu.edu */
1169 if (curstack != mainstack) {
1170 dSP;
1171 SWITCHSTACK(curstack, mainstack);
1172 }
1173
1174#ifdef I_STDARG
1175 va_start(args, pat);
1176#else
1177 va_start(args);
1178#endif
1179 message = mess(pat, &args);
1180 va_end(args);
1181
57d3b86d 1182#ifdef USE_THREADS
199100c8
MB
1183 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1184 "%p: die: message = %s\ndiehook = %p\n",
1185 thr, message, diehook));
57d3b86d 1186#endif /* USE_THREADS */
1738f5c4
CS
1187 if (diehook) {
1188 /* sv_2cv might call croak() */
1189 SV *olddiehook = diehook;
1190 ENTER;
1191 SAVESPTR(diehook);
1192 diehook = Nullsv;
1193 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1194 LEAVE;
1195 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1196 dSP;
774d564b
PP
1197 SV *msg;
1198
1199 ENTER;
1200 msg = newSVpv(message, 0);
1201 SvREADONLY_on(msg);
1202 SAVEFREESV(msg);
1738f5c4
CS
1203
1204 PUSHMARK(sp);
1205 XPUSHs(msg);
1206 PUTBACK;
1207 perl_call_sv((SV*)cv, G_DISCARD);
1208
774d564b 1209 LEAVE;
1738f5c4 1210 }
36477c24
PP
1211 }
1212
1213 restartop = die_where(message);
57d3b86d 1214#ifdef USE_THREADS
d9f997d7 1215 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
7c06b590
GS
1216 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1217 thr, restartop, was_in_eval, top_env));
57d3b86d 1218#endif /* USE_THREADS */
7c06b590 1219 if ((!restartop && was_in_eval) || top_env->je_prev)
54310121 1220 JMPENV_JUMP(3);
36477c24
PP
1221 return restartop;
1222}
1223
1224#ifdef I_STDARG
79072805 1225void
71be2cbc 1226croak(const char* pat, ...)
463ee0b2 1227#else
8990e307
LW
1228/*VARARGS0*/
1229void
1230croak(pat, va_alist)
1231 char *pat;
1232 va_dcl
463ee0b2 1233#endif
a687059c 1234{
11343788 1235 dTHR;
a687059c 1236 va_list args;
de3bb511 1237 char *message;
748a9306
LW
1238 HV *stash;
1239 GV *gv;
1240 CV *cv;
a687059c 1241
a0d0e21e 1242#ifdef I_STDARG
8990e307
LW
1243 va_start(args, pat);
1244#else
a687059c 1245 va_start(args);
8990e307 1246#endif
2304df62 1247 message = mess(pat, &args);
a687059c 1248 va_end(args);
11343788 1249#ifdef USE_THREADS
d9f997d7 1250 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1251#endif /* USE_THREADS */
20cec16a 1252 if (diehook) {
1738f5c4 1253 /* sv_2cv might call croak() */
20cec16a 1254 SV *olddiehook = diehook;
1738f5c4
CS
1255 ENTER;
1256 SAVESPTR(diehook);
1257 diehook = Nullsv;
20cec16a 1258 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1259 LEAVE;
1260 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1261 dSP;
774d564b
PP
1262 SV *msg;
1263
1264 ENTER;
1265 msg = newSVpv(message, 0);
1266 SvREADONLY_on(msg);
1267 SAVEFREESV(msg);
20cec16a
PP
1268
1269 PUSHMARK(sp);
1738f5c4 1270 XPUSHs(msg);
20cec16a
PP
1271 PUTBACK;
1272 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1273
774d564b 1274 LEAVE;
20cec16a 1275 }
748a9306 1276 }
a0d0e21e
LW
1277 if (in_eval) {
1278 restartop = die_where(message);
54310121 1279 JMPENV_JUMP(3);
a0d0e21e 1280 }
760ac839
LW
1281 PerlIO_puts(PerlIO_stderr(),message);
1282 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1283 my_failure_exit();
a687059c
LW
1284}
1285
8990e307 1286void
ecfc5424 1287#ifdef I_STDARG
71be2cbc 1288warn(const char* pat,...)
463ee0b2 1289#else
8990e307
LW
1290/*VARARGS0*/
1291warn(pat,va_alist)
71be2cbc 1292 const char *pat;
8990e307 1293 va_dcl
463ee0b2 1294#endif
a687059c
LW
1295{
1296 va_list args;
de3bb511 1297 char *message;
748a9306
LW
1298 HV *stash;
1299 GV *gv;
1300 CV *cv;
a687059c 1301
a0d0e21e 1302#ifdef I_STDARG
8990e307
LW
1303 va_start(args, pat);
1304#else
a687059c 1305 va_start(args);
8990e307 1306#endif
2304df62 1307 message = mess(pat, &args);
a687059c
LW
1308 va_end(args);
1309
20cec16a 1310 if (warnhook) {
1738f5c4 1311 /* sv_2cv might call warn() */
11343788 1312 dTHR;
20cec16a 1313 SV *oldwarnhook = warnhook;
1738f5c4
CS
1314 ENTER;
1315 SAVESPTR(warnhook);
1316 warnhook = Nullsv;
20cec16a 1317 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1318 LEAVE;
1319 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1320 dSP;
774d564b
PP
1321 SV *msg;
1322
1323 ENTER;
1324 msg = newSVpv(message, 0);
1325 SvREADONLY_on(msg);
1326 SAVEFREESV(msg);
1327
20cec16a 1328 PUSHMARK(sp);
774d564b 1329 XPUSHs(msg);
20cec16a
PP
1330 PUTBACK;
1331 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1332
1333 LEAVE;
20cec16a
PP
1334 return;
1335 }
748a9306 1336 }
20cec16a 1337 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1338#ifdef LEAKTEST
20cec16a 1339 DEBUG_L(xstat());
a687059c 1340#endif
20cec16a 1341 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1342}
8d063cd8 1343
a0d0e21e 1344#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1345#ifndef WIN32
8d063cd8 1346void
8ac85365 1347my_setenv(char *nam, char *val)
8d063cd8 1348{
79072805 1349 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1350
fe14fcc3 1351 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1352 I32 j;
1353 I32 max;
fe14fcc3
LW
1354 char **tmpenv;
1355
de3bb511 1356 /*SUPPRESS 530*/
fe14fcc3
LW
1357 for (max = i; environ[max]; max++) ;
1358 New(901,tmpenv, max+2, char*);
1359 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1360 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1361 tmpenv[max] = Nullch;
1362 environ = tmpenv; /* tell exec where it is now */
1363 }
a687059c 1364 if (!val) {
e5ebf479 1365 Safefree(environ[i]);
a687059c
LW
1366 while (environ[i]) {
1367 environ[i] = environ[i+1];
1368 i++;
1369 }
1370 return;
1371 }
8d063cd8 1372 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1373 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1374 environ[i+1] = Nullch; /* make sure it's null terminated */
1375 }
fe14fcc3
LW
1376 else
1377 Safefree(environ[i]);
a687059c 1378 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1379#ifndef MSDOS
a687059c 1380 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1381#else
1382 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1383 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1384 * some utilities and applications may break because they only look
1385 * for upper case strings. (Fixed strupr() bug here.)]
1386 */
1387 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1388 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1389#endif /* MSDOS */
8d063cd8
LW
1390}
1391
3e3baf6d 1392#else /* if WIN32 */
68dc0745
PP
1393
1394void
4e35701f 1395my_setenv(char *nam,char *val)
68dc0745 1396{
3e3baf6d
TB
1397
1398#ifdef USE_WIN32_RTL_ENV
1399
68dc0745
PP
1400 register char *envstr;
1401 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1402 STRLEN vallen;
1403 char *oldstr = environ[setenv_getix(nam)];
1404
1405 /* putenv() has totally broken semantics in both the Borland
1406 * and Microsoft CRTLs. They either store the passed pointer in
1407 * the environment without making a copy, or make a copy and don't
1408 * free it. And on top of that, they dont free() old entries that
1409 * are being replaced/deleted. This means the caller must
1410 * free any old entries somehow, or we end up with a memory
1411 * leak every time my_setenv() is called. One might think
1412 * one could directly manipulate environ[], like the UNIX code
1413 * above, but direct changes to environ are not allowed when
1414 * calling putenv(), since the RTLs maintain an internal
1415 * *copy* of environ[]. Bad, bad, *bad* stink.
1416 * GSAR 97-06-07
1417 */
68dc0745 1418
3e3baf6d
TB
1419 if (!val) {
1420 if (!oldstr)
1421 return;
1422 val = "";
1423 vallen = 0;
1424 }
1425 else
1426 vallen = strlen(val);
fc36a67e 1427 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1428 (void)sprintf(envstr,"%s=%s",nam,val);
3e3baf6d
TB
1429 (void)putenv(envstr);
1430 if (oldstr)
1431 Safefree(oldstr);
1432#ifdef _MSC_VER
1433 Safefree(envstr); /* MSVCRT leaks without this */
1434#endif
1435
1436#else /* !USE_WIN32_RTL_ENV */
1437
1438 /* The sane way to deal with the environment.
1439 * Has these advantages over putenv() & co.:
1440 * * enables us to store a truly empty value in the
1441 * environment (like in UNIX).
1442 * * we don't have to deal with RTL globals, bugs and leaks.
1443 * * Much faster.
1444 * Why you may want to enable USE_WIN32_RTL_ENV:
1445 * * environ[] and RTL functions will not reflect changes,
1446 * which might be an issue if extensions want to access
1447 * the env. via RTL. This cuts both ways, since RTL will
1448 * not see changes made by extensions that call the Win32
1449 * functions directly, either.
1450 * GSAR 97-06-07
1451 */
1452 SetEnvironmentVariable(nam,val);
1453
1454#endif
1455}
1456
1457#endif /* WIN32 */
1458
1459I32
8ac85365 1460setenv_getix(char *nam)
3e3baf6d
TB
1461{
1462 register I32 i, len = strlen(nam);
1463
1464 for (i = 0; environ[i]; i++) {
1465 if (
1466#ifdef WIN32
1467 strnicmp(environ[i],nam,len) == 0
1468#else
1469 strnEQ(environ[i],nam,len)
1470#endif
1471 && environ[i][len] == '=')
1472 break; /* strnEQ must come first to avoid */
1473 } /* potential SEGV's */
1474 return i;
68dc0745
PP
1475}
1476
a0d0e21e 1477#endif /* !VMS */
378cc40b 1478
16d20bd9 1479#ifdef UNLINK_ALL_VERSIONS
79072805 1480I32
378cc40b
LW
1481unlnk(f) /* unlink all versions of a file */
1482char *f;
1483{
79072805 1484 I32 i;
378cc40b
LW
1485
1486 for (i = 0; unlink(f) >= 0; i++) ;
1487 return i ? 0 : -1;
1488}
1489#endif
1490
85e6fe83 1491#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1492char *
4e35701f 1493my_bcopy(register char *from,register char *to,register I32 len)
378cc40b
LW
1494{
1495 char *retval = to;
1496
7c0587c8
LW
1497 if (from - to >= 0) {
1498 while (len--)
1499 *to++ = *from++;
1500 }
1501 else {
1502 to += len;
1503 from += len;
1504 while (len--)
faf8582f 1505 *(--to) = *(--from);
7c0587c8 1506 }
378cc40b
LW
1507 return retval;
1508}
ffed7fef 1509#endif
378cc40b 1510
fc36a67e
PP
1511#ifndef HAS_MEMSET
1512void *
1513my_memset(loc,ch,len)
1514register char *loc;
1515register I32 ch;
1516register I32 len;
1517{
1518 char *retval = loc;
1519
1520 while (len--)
1521 *loc++ = ch;
1522 return retval;
1523}
1524#endif
1525
7c0587c8 1526#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1527char *
7c0587c8 1528my_bzero(loc,len)
378cc40b 1529register char *loc;
79072805 1530register I32 len;
378cc40b
LW
1531{
1532 char *retval = loc;
1533
1534 while (len--)
1535 *loc++ = 0;
1536 return retval;
1537}
1538#endif
7c0587c8 1539
36477c24 1540#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1541I32
7c0587c8 1542my_memcmp(s1,s2,len)
36477c24
PP
1543char *s1;
1544char *s2;
79072805 1545register I32 len;
7c0587c8 1546{
36477c24
PP
1547 register U8 *a = (U8 *)s1;
1548 register U8 *b = (U8 *)s2;
79072805 1549 register I32 tmp;
7c0587c8
LW
1550
1551 while (len--) {
36477c24 1552 if (tmp = *a++ - *b++)
7c0587c8
LW
1553 return tmp;
1554 }
1555 return 0;
1556}
36477c24 1557#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1558
4633a7c4 1559#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1560#ifndef HAS_VPRINTF
a687059c 1561
85e6fe83 1562#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1563char *
1564#else
1565int
1566#endif
1567vsprintf(dest, pat, args)
71be2cbc
PP
1568char *dest;
1569const char *pat;
1570char *args;
a687059c
LW
1571{
1572 FILE fakebuf;
1573
1574 fakebuf._ptr = dest;
1575 fakebuf._cnt = 32767;
35c8bce7
LW
1576#ifndef _IOSTRG
1577#define _IOSTRG 0
1578#endif
a687059c
LW
1579 fakebuf._flag = _IOWRT|_IOSTRG;
1580 _doprnt(pat, args, &fakebuf); /* what a kludge */
1581 (void)putc('\0', &fakebuf);
85e6fe83 1582#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1583 return(dest);
1584#else
1585 return 0; /* perl doesn't use return value */
1586#endif
1587}
1588
fe14fcc3 1589#endif /* HAS_VPRINTF */
4633a7c4 1590#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1591
1592#ifdef MYSWAP
ffed7fef 1593#if BYTEORDER != 0x4321
a687059c 1594short
748a9306 1595#ifndef CAN_PROTOTYPE
a687059c
LW
1596my_swap(s)
1597short s;
748a9306
LW
1598#else
1599my_swap(short s)
1600#endif
a687059c
LW
1601{
1602#if (BYTEORDER & 1) == 0
1603 short result;
1604
1605 result = ((s & 255) << 8) + ((s >> 8) & 255);
1606 return result;
1607#else
1608 return s;
1609#endif
1610}
1611
1612long
748a9306
LW
1613#ifndef CAN_PROTOTYPE
1614my_htonl(l)
a687059c 1615register long l;
748a9306
LW
1616#else
1617my_htonl(long l)
1618#endif
a687059c
LW
1619{
1620 union {
1621 long result;
ffed7fef 1622 char c[sizeof(long)];
a687059c
LW
1623 } u;
1624
ffed7fef 1625#if BYTEORDER == 0x1234
a687059c
LW
1626 u.c[0] = (l >> 24) & 255;
1627 u.c[1] = (l >> 16) & 255;
1628 u.c[2] = (l >> 8) & 255;
1629 u.c[3] = l & 255;
1630 return u.result;
1631#else
ffed7fef 1632#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1633 croak("Unknown BYTEORDER\n");
a687059c 1634#else
79072805
LW
1635 register I32 o;
1636 register I32 s;
a687059c 1637
ffed7fef
LW
1638 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1639 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1640 }
1641 return u.result;
1642#endif
1643#endif
1644}
1645
1646long
748a9306
LW
1647#ifndef CAN_PROTOTYPE
1648my_ntohl(l)
a687059c 1649register long l;
748a9306
LW
1650#else
1651my_ntohl(long l)
1652#endif
a687059c
LW
1653{
1654 union {
1655 long l;
ffed7fef 1656 char c[sizeof(long)];
a687059c
LW
1657 } u;
1658
ffed7fef 1659#if BYTEORDER == 0x1234
a687059c
LW
1660 u.c[0] = (l >> 24) & 255;
1661 u.c[1] = (l >> 16) & 255;
1662 u.c[2] = (l >> 8) & 255;
1663 u.c[3] = l & 255;
1664 return u.l;
1665#else
ffed7fef 1666#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1667 croak("Unknown BYTEORDER\n");
a687059c 1668#else
79072805
LW
1669 register I32 o;
1670 register I32 s;
a687059c
LW
1671
1672 u.l = l;
1673 l = 0;
ffed7fef
LW
1674 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1675 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1676 }
1677 return l;
1678#endif
1679#endif
1680}
1681
ffed7fef 1682#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1683#endif /* MYSWAP */
1684
1685/*
1686 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1687 * If these functions are defined,
1688 * the BYTEORDER is neither 0x1234 nor 0x4321.
1689 * However, this is not assumed.
1690 * -DWS
1691 */
1692
1693#define HTOV(name,type) \
1694 type \
1695 name (n) \
1696 register type n; \
1697 { \
1698 union { \
1699 type value; \
1700 char c[sizeof(type)]; \
1701 } u; \
79072805
LW
1702 register I32 i; \
1703 register I32 s; \
988174c1
LW
1704 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1705 u.c[i] = (n >> s) & 0xFF; \
1706 } \
1707 return u.value; \
1708 }
1709
1710#define VTOH(name,type) \
1711 type \
1712 name (n) \
1713 register type n; \
1714 { \
1715 union { \
1716 type value; \
1717 char c[sizeof(type)]; \
1718 } u; \
79072805
LW
1719 register I32 i; \
1720 register I32 s; \
988174c1
LW
1721 u.value = n; \
1722 n = 0; \
1723 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1724 n += (u.c[i] & 0xFF) << s; \
1725 } \
1726 return n; \
1727 }
1728
1729#if defined(HAS_HTOVS) && !defined(htovs)
1730HTOV(htovs,short)
1731#endif
1732#if defined(HAS_HTOVL) && !defined(htovl)
1733HTOV(htovl,long)
1734#endif
1735#if defined(HAS_VTOHS) && !defined(vtohs)
1736VTOH(vtohs,short)
1737#endif
1738#if defined(HAS_VTOHL) && !defined(vtohl)
1739VTOH(vtohl,long)
1740#endif
a687059c 1741
5f05dabc
PP
1742 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1743#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1744PerlIO *
8ac85365 1745my_popen(char *cmd, char *mode)
a687059c
LW
1746{
1747 int p[2];
8ac85365 1748 register I32 This, that;
79072805
LW
1749 register I32 pid;
1750 SV *sv;
1738f5c4 1751 I32 doexec = strNE(cmd,"-");
a687059c 1752
ddcf38b7
IZ
1753#ifdef OS2
1754 if (doexec) {
1755 return my_syspopen(cmd,mode);
1756 }
1757#endif
a687059c
LW
1758 if (pipe(p) < 0)
1759 return Nullfp;
8ac85365
NIS
1760 This = (*mode == 'w');
1761 that = !This;
bbce6d69
PP
1762 if (doexec && tainting) {
1763 taint_env();
1764 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1765 }
a687059c
LW
1766 while ((pid = (doexec?vfork():fork())) < 0) {
1767 if (errno != EAGAIN) {
8ac85365 1768 close(p[This]);
a687059c 1769 if (!doexec)
463ee0b2 1770 croak("Can't fork");
a687059c
LW
1771 return Nullfp;
1772 }
1773 sleep(5);
1774 }
1775 if (pid == 0) {
79072805
LW
1776 GV* tmpgv;
1777
a687059c 1778#define THIS that
8ac85365 1779#define THAT This
a687059c
LW
1780 close(p[THAT]);
1781 if (p[THIS] != (*mode == 'r')) {
1782 dup2(p[THIS], *mode == 'r');
1783 close(p[THIS]);
1784 }
1785 if (doexec) {
a0d0e21e 1786#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1787 int fd;
1788
1789#ifndef NOFILE
1790#define NOFILE 20
1791#endif
d48672a2 1792 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1793 close(fd);
1794#endif
a687059c
LW
1795 do_exec(cmd); /* may or may not use the shell */
1796 _exit(1);
1797 }
de3bb511 1798 /*SUPPRESS 560*/
85e6fe83 1799 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1800 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1801 forkprocess = 0;
463ee0b2 1802 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1803 return Nullfp;
1804#undef THIS
1805#undef THAT
1806 }
62b28dd9 1807 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1808 close(p[that]);
8ac85365
NIS
1809 if (p[that] < p[This]) {
1810 dup2(p[This], p[that]);
1811 close(p[This]);
1812 p[This] = p[that];
62b28dd9 1813 }
8ac85365 1814 sv = *av_fetch(fdpid,p[This],TRUE);
a0d0e21e 1815 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1816 SvIVX(sv) = pid;
a687059c 1817 forkprocess = pid;
8ac85365 1818 return PerlIO_fdopen(p[This], mode);
a687059c 1819}
7c0587c8 1820#else
55497cff 1821#if defined(atarist) || defined(DJGPP)
7c0587c8 1822FILE *popen();
760ac839 1823PerlIO *
79072805 1824my_popen(cmd,mode)
7c0587c8
LW
1825char *cmd;
1826char *mode;
1827{
760ac839 1828 /* Needs work for PerlIO ! */
55497cff
PP
1829 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1830 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1831}
1832#endif
1833
1834#endif /* !DOSISH */
a687059c 1835
748a9306 1836#ifdef DUMP_FDS
79072805 1837dump_fds(s)
ae986130
LW
1838char *s;
1839{
1840 int fd;
1841 struct stat tmpstatbuf;
1842
760ac839 1843 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1844 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1845 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1846 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1847 }
760ac839 1848 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1849}
1850#endif
1851
fe14fcc3 1852#ifndef HAS_DUP2
fec02dd3 1853int
a687059c
LW
1854dup2(oldfd,newfd)
1855int oldfd;
1856int newfd;
1857{
a0d0e21e 1858#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1859 if (oldfd == newfd)
1860 return oldfd;
62b28dd9 1861 close(newfd);
fec02dd3 1862 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1863#else
fc36a67e
PP
1864#define DUP2_MAX_FDS 256
1865 int fdtmp[DUP2_MAX_FDS];
79072805 1866 I32 fdx = 0;
ae986130
LW
1867 int fd;
1868
fe14fcc3 1869 if (oldfd == newfd)
fec02dd3 1870 return oldfd;
a687059c 1871 close(newfd);
fc36a67e
PP
1872 /* good enough for low fd's... */
1873 while ((fd = dup(oldfd)) != newfd && fd >= 0) {
1874 if (fdx >= DUP2_MAX_FDS) {
1875 close(fd);
1876 fd = -1;
1877 break;
1878 }
ae986130 1879 fdtmp[fdx++] = fd;
fc36a67e 1880 }
ae986130
LW
1881 while (fdx > 0)
1882 close(fdtmp[--fdx]);
fec02dd3 1883 return fd;
62b28dd9 1884#endif
a687059c
LW
1885}
1886#endif
1887
ff68c719
PP
1888
1889#ifdef HAS_SIGACTION
1890
1891Sighandler_t
8ac85365 1892rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1893{
1894 struct sigaction act, oact;
1895
1896 act.sa_handler = handler;
1897 sigemptyset(&act.sa_mask);
1898 act.sa_flags = 0;
1899#ifdef SA_RESTART
1900 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1901#endif
1902 if (sigaction(signo, &act, &oact) == -1)
36477c24 1903 return SIG_ERR;
ff68c719 1904 else
36477c24 1905 return oact.sa_handler;
ff68c719
PP
1906}
1907
1908Sighandler_t
8ac85365 1909rsignal_state(int signo)
ff68c719
PP
1910{
1911 struct sigaction oact;
1912
1913 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1914 return SIG_ERR;
1915 else
1916 return oact.sa_handler;
1917}
1918
1919int
8ac85365 1920rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1921{
1922 struct sigaction act;
1923
1924 act.sa_handler = handler;
1925 sigemptyset(&act.sa_mask);
1926 act.sa_flags = 0;
1927#ifdef SA_RESTART
1928 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1929#endif
1930 return sigaction(signo, &act, save);
1931}
1932
1933int
8ac85365 1934rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1935{
1936 return sigaction(signo, save, (struct sigaction *)NULL);
1937}
1938
1939#else /* !HAS_SIGACTION */
1940
1941Sighandler_t
4e35701f 1942rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1943{
1944 return signal(signo, handler);
1945}
1946
1947static int sig_trapped;
1948
1949static
1950Signal_t
4e35701f 1951sig_trap(int signo)
ff68c719
PP
1952{
1953 sig_trapped++;
1954}
1955
1956Sighandler_t
4e35701f 1957rsignal_state(int signo)
ff68c719
PP
1958{
1959 Sighandler_t oldsig;
1960
1961 sig_trapped = 0;
1962 oldsig = signal(signo, sig_trap);
1963 signal(signo, oldsig);
1964 if (sig_trapped)
1965 kill(getpid(), signo);
1966 return oldsig;
1967}
1968
1969int
4e35701f 1970rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1971{
1972 *save = signal(signo, handler);
1973 return (*save == SIG_ERR) ? -1 : 0;
1974}
1975
1976int
4e35701f 1977rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1978{
1979 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1980}
1981
1982#endif /* !HAS_SIGACTION */
1983
5f05dabc
PP
1984 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1985#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805 1986I32
8ac85365 1987my_pclose(FILE *ptr)
a687059c 1988{
ff68c719 1989 Sigsave_t hstat, istat, qstat;
a687059c 1990 int status;
a0d0e21e 1991 SV **svp;
20188a90 1992 int pid;
03136e13
CS
1993 bool close_failed;
1994 int saved_errno;
1995#ifdef VMS
1996 int saved_vaxc_errno;
1997#endif
a687059c 1998
760ac839 1999 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2000 pid = (int)SvIVX(*svp);
a0d0e21e
LW
2001 SvREFCNT_dec(*svp);
2002 *svp = &sv_undef;
ddcf38b7
IZ
2003#ifdef OS2
2004 if (pid == -1) { /* Opened by popen. */
2005 return my_syspclose(ptr);
2006 }
2007#endif
03136e13
CS
2008 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2009 saved_errno = errno;
2010#ifdef VMS
2011 saved_vaxc_errno = vaxc$errno;
2012#endif
2013 }
7c0587c8
LW
2014#ifdef UTS
2015 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2016#endif
ff68c719
PP
2017 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2018 rsignal_save(SIGINT, SIG_IGN, &istat);
2019 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
2020 do {
2021 pid = wait4pid(pid, &status, 0);
2022 } while (pid == -1 && errno == EINTR);
ff68c719
PP
2023 rsignal_restore(SIGHUP, &hstat);
2024 rsignal_restore(SIGINT, &istat);
2025 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2026 if (close_failed) {
2027 SETERRNO(saved_errno, saved_vaxc_errno);
2028 return -1;
2029 }
2030 return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
20188a90 2031}
4633a7c4
LW
2032#endif /* !DOSISH */
2033
2034#if !defined(DOSISH) || defined(OS2)
79072805 2035I32
8ac85365 2036wait4pid(int pid, int *statusp, int flags)
20188a90 2037{
79072805
LW
2038 SV *sv;
2039 SV** svp;
fc36a67e 2040 char spid[TYPE_CHARS(int)];
20188a90
LW
2041
2042 if (!pid)
2043 return -1;
20188a90
LW
2044 if (pid > 0) {
2045 sprintf(spid, "%d", pid);
79072805
LW
2046 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2047 if (svp && *svp != &sv_undef) {
463ee0b2 2048 *statusp = SvIVX(*svp);
748a9306 2049 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2050 return pid;
2051 }
2052 }
2053 else {
79072805 2054 HE *entry;
20188a90 2055
79072805
LW
2056 hv_iterinit(pidstatus);
2057 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2058 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2059 sv = hv_iterval(pidstatus,entry);
463ee0b2 2060 *statusp = SvIVX(sv);
20188a90 2061 sprintf(spid, "%d", pid);
748a9306 2062 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2063 return pid;
2064 }
2065 }
79072805 2066#ifdef HAS_WAITPID
367f3c24
IZ
2067# ifdef HAS_WAITPID_RUNTIME
2068 if (!HAS_WAITPID_RUNTIME)
2069 goto hard_way;
2070# endif
79072805 2071 return waitpid(pid,statusp,flags);
367f3c24
IZ
2072#endif
2073#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2074 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2075#endif
2076#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2077 hard_way:
a0d0e21e
LW
2078 {
2079 I32 result;
2080 if (flags)
2081 croak("Can't do waitpid with flags");
2082 else {
2083 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
2084 pidgone(result,*statusp);
2085 if (result < 0)
2086 *statusp = -1;
2087 }
2088 return result;
a687059c
LW
2089 }
2090#endif
a687059c 2091}
7c0587c8 2092#endif /* !DOSISH */
a687059c 2093
7c0587c8 2094void
de3bb511 2095/*SUPPRESS 590*/
8ac85365 2096pidgone(int pid, int status)
a687059c 2097{
79072805 2098 register SV *sv;
fc36a67e 2099 char spid[TYPE_CHARS(int)];
a687059c 2100
20188a90 2101 sprintf(spid, "%d", pid);
79072805 2102 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2103 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2104 SvIVX(sv) = status;
20188a90 2105 return;
a687059c
LW
2106}
2107
55497cff 2108#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2109int pclose();
ddcf38b7
IZ
2110#ifdef HAS_FORK
2111int /* Cannot prototype with I32
2112 in os2ish.h. */
2113my_syspclose(ptr)
2114#else
79072805
LW
2115I32
2116my_pclose(ptr)
ddcf38b7 2117#endif
760ac839 2118PerlIO *ptr;
a687059c 2119{
760ac839
LW
2120 /* Needs work for PerlIO ! */
2121 FILE *f = PerlIO_findFILE(ptr);
2122 I32 result = pclose(f);
2123 PerlIO_releaseFILE(ptr,f);
2124 return result;
a687059c 2125}
7c0587c8 2126#endif
9f68db38
LW
2127
2128void
8ac85365 2129repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2130{
79072805 2131 register I32 todo;
9f68db38
LW
2132 register char *frombase = from;
2133
2134 if (len == 1) {
2135 todo = *from;
2136 while (count-- > 0)
2137 *to++ = todo;
2138 return;
2139 }
2140 while (count-- > 0) {
2141 for (todo = len; todo > 0; todo--) {
2142 *to++ = *from++;
2143 }
2144 from = frombase;
2145 }
2146}
0f85fab0
LW
2147
2148#ifndef CASTNEGFLOAT
463ee0b2 2149U32
79072805 2150cast_ulong(f)
0f85fab0
LW
2151double f;
2152{
2153 long along;
2154
27e2fb84 2155#if CASTFLAGS & 2
34de22dd
LW
2156# define BIGDOUBLE 2147483648.0
2157 if (f >= BIGDOUBLE)
2158 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2159#endif
0f85fab0
LW
2160 if (f >= 0.0)
2161 return (unsigned long)f;
2162 along = (long)f;
2163 return (unsigned long)along;
2164}
ed6116ce
LW
2165# undef BIGDOUBLE
2166#endif
2167
2168#ifndef CASTI32
5d94fbed 2169
5d94fbed
AD
2170/* Unfortunately, on some systems the cast_uv() function doesn't
2171 work with the system-supplied definition of ULONG_MAX. The
2172 comparison (f >= ULONG_MAX) always comes out true. It must be a
2173 problem with the compiler constant folding.
2174
2175 In any case, this workaround should be fine on any two's complement
2176 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2177 ccflags.
2178 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2179*/
1eb770ff
PP
2180
2181/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2182 of LONG_(MIN/MAX).
2183 -- Kenneth Albanowski <kjahds@kjahds.com>
2184*/
2185
20cec16a
PP
2186#ifndef MY_UV_MAX
2187# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2188#endif
2189
ed6116ce
LW
2190I32
2191cast_i32(f)
2192double f;
2193{
20cec16a
PP
2194 if (f >= I32_MAX)
2195 return (I32) I32_MAX;
2196 if (f <= I32_MIN)
2197 return (I32) I32_MIN;
ed6116ce
LW
2198 return (I32) f;
2199}
a0d0e21e
LW
2200
2201IV
2202cast_iv(f)
2203double f;
2204{
20cec16a
PP
2205 if (f >= IV_MAX)
2206 return (IV) IV_MAX;
2207 if (f <= IV_MIN)
2208 return (IV) IV_MIN;
a0d0e21e
LW
2209 return (IV) f;
2210}
5d94fbed
AD
2211
2212UV
2213cast_uv(f)
2214double f;
2215{
20cec16a
PP
2216 if (f >= MY_UV_MAX)
2217 return (UV) MY_UV_MAX;
5d94fbed
AD
2218 return (UV) f;
2219}
2220
0f85fab0 2221#endif
62b28dd9 2222
fe14fcc3 2223#ifndef HAS_RENAME
79072805 2224I32
62b28dd9
LW
2225same_dirent(a,b)
2226char *a;
2227char *b;
2228{
93a17b20
LW
2229 char *fa = strrchr(a,'/');
2230 char *fb = strrchr(b,'/');
62b28dd9
LW
2231 struct stat tmpstatbuf1;
2232 struct stat tmpstatbuf2;
46fc3d4c 2233 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2234
2235 if (fa)
2236 fa++;
2237 else
2238 fa = a;
2239 if (fb)
2240 fb++;
2241 else
2242 fb = b;
2243 if (strNE(a,b))
2244 return FALSE;
2245 if (fa == a)
46fc3d4c 2246 sv_setpv(tmpsv, ".");
62b28dd9 2247 else
46fc3d4c
PP
2248 sv_setpvn(tmpsv, a, fa - a);
2249 if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2250 return FALSE;
2251 if (fb == b)
46fc3d4c 2252 sv_setpv(tmpsv, ".");
62b28dd9 2253 else
46fc3d4c
PP
2254 sv_setpvn(tmpsv, b, fb - b);
2255 if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2256 return FALSE;
2257 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2258 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2259}
fe14fcc3
LW
2260#endif /* !HAS_RENAME */
2261
55497cff 2262UV
8ac85365 2263scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2264{
2265 register char *s = start;
55497cff
PP
2266 register UV retval = 0;
2267 bool overflowed = FALSE;
fe14fcc3 2268
748a9306 2269 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2270 register UV n = retval << 3;
2271 if (!overflowed && (n >> 3) != retval) {
2272 warn("Integer overflow in octal number");
2273 overflowed = TRUE;
2274 }
2275 retval = n | (*s++ - '0');
748a9306 2276 len--;
fe14fcc3 2277 }
748a9306
LW
2278 if (dowarn && len && (*s == '8' || *s == '9'))
2279 warn("Illegal octal digit ignored");
fe14fcc3
LW
2280 *retlen = s - start;
2281 return retval;
2282}
2283
71be2cbc 2284UV
8ac85365 2285scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2286{
2287 register char *s = start;
55497cff
PP
2288 register UV retval = 0;
2289 bool overflowed = FALSE;
fe14fcc3
LW
2290 char *tmp;
2291
4e35701f 2292 while (len-- && *s && (tmp = strchr((char *) hexdigit, *s))) {
55497cff
PP
2293 register UV n = retval << 4;
2294 if (!overflowed && (n >> 4) != retval) {
2295 warn("Integer overflow in hex number");
2296 overflowed = TRUE;
2297 }
4e35701f 2298 retval = n | ((tmp - hexdigit) & 15);
fe14fcc3
LW
2299 s++;
2300 }
2301 *retlen = s - start;
2302 return retval;
2303}
760ac839 2304
11343788 2305#ifdef USE_THREADS
12ca11f6
MB
2306#ifdef FAKE_THREADS
2307/* Very simplistic scheduler for now */
2308void
2309schedule(void)
2310{
c7848ba1 2311 thr = thr->i.next_run;
12ca11f6
MB
2312}
2313
2314void
2315perl_cond_init(cp)
2316perl_cond *cp;
2317{
2318 *cp = 0;
2319}
2320
2321void
2322perl_cond_signal(cp)
2323perl_cond *cp;
2324{
51dd5992 2325 perl_os_thread t;
12ca11f6
MB
2326 perl_cond cond = *cp;
2327
2328 if (!cond)
2329 return;
2330 t = cond->thread;
2331 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2332 t->i.next_run = thr->i.next_run;
2333 thr->i.next_run->i.prev_run = t;
2334 t->i.prev_run = thr;
2335 thr->i.next_run = t;
2336 thr->i.wait_queue = 0;
12ca11f6
MB
2337 /* Remove from the wait queue */
2338 *cp = cond->next;
2339 Safefree(cond);
2340}
2341
2342void
2343perl_cond_broadcast(cp)
2344perl_cond *cp;
2345{
51dd5992 2346 perl_os_thread t;
12ca11f6
MB
2347 perl_cond cond, cond_next;
2348
2349 for (cond = *cp; cond; cond = cond_next) {
2350 t = cond->thread;
2351 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2352 t->i.next_run = thr->i.next_run;
2353 thr->i.next_run->i.prev_run = t;
2354 t->i.prev_run = thr;
2355 thr->i.next_run = t;
2356 thr->i.wait_queue = 0;
12ca11f6
MB
2357 /* Remove from the wait queue */
2358 cond_next = cond->next;
2359 Safefree(cond);
2360 }
2361 *cp = 0;
2362}
2363
2364void
2365perl_cond_wait(cp)
2366perl_cond *cp;
2367{
2368 perl_cond cond;
2369
c7848ba1 2370 if (thr->i.next_run == thr)
12ca11f6
MB
2371 croak("panic: perl_cond_wait called by last runnable thread");
2372
0f15f207 2373 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2374 cond->thread = thr;
2375 cond->next = *cp;
2376 *cp = cond;
c7848ba1 2377 thr->i.wait_queue = cond;
12ca11f6 2378 /* Remove ourselves from runnable queue */
c7848ba1
MB
2379 thr->i.next_run->i.prev_run = thr->i.prev_run;
2380 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2381}
2382#endif /* FAKE_THREADS */
2383
11343788 2384#ifdef OLD_PTHREADS_API
52e1cb5e 2385struct perl_thread *
11343788
MB
2386getTHR _((void))
2387{
2388 pthread_addr_t t;
2389
2390 if (pthread_getspecific(thr_key, &t))
2391 croak("panic: pthread_getspecific");
52e1cb5e 2392 return (struct perl_thread *) t;
11343788
MB
2393}
2394#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2395
2396MAGIC *
8ac85365 2397condpair_magic(SV *sv)
f93b4edd
MB
2398{
2399 MAGIC *mg;
2400
2401 SvUPGRADE(sv, SVt_PVMG);
2402 mg = mg_find(sv, 'm');
2403 if (!mg) {
2404 condpair_t *cp;
2405
2406 New(53, cp, 1, condpair_t);
2407 MUTEX_INIT(&cp->mutex);
2408 COND_INIT(&cp->owner_cond);
2409 COND_INIT(&cp->cond);
2410 cp->owner = 0;
2411 MUTEX_LOCK(&sv_mutex);
2412 mg = mg_find(sv, 'm');
2413 if (mg) {
2414 /* someone else beat us to initialising it */
2415 MUTEX_UNLOCK(&sv_mutex);
2416 MUTEX_DESTROY(&cp->mutex);
2417 COND_DESTROY(&cp->owner_cond);
2418 COND_DESTROY(&cp->cond);
2419 Safefree(cp);
2420 }
2421 else {
2422 sv_magic(sv, Nullsv, 'm', 0, 0);
2423 mg = SvMAGIC(sv);
2424 mg->mg_ptr = (char *)cp;
2425 mg->mg_len = sizeof(cp);
2426 MUTEX_UNLOCK(&sv_mutex);
bc1f4c86 2427 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2428 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2429 }
2430 }
2431 return mg;
2432}
a863c7d1
MB
2433
2434/*
199100c8
MB
2435 * Make a new perl thread structure using t as a prototype. Some of the
2436 * fields for the new thread are copied from the prototype thread, t,
2437 * so t should not be running in perl at the time this function is
2438 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2439 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 2440 */
52e1cb5e
JH
2441struct perl_thread *
2442new_struct_thread(struct perl_thread *t)
a863c7d1 2443{
52e1cb5e 2444 struct perl_thread *thr;
a863c7d1 2445 SV *sv;
199100c8
MB
2446 SV **svp;
2447 I32 i;
2448
2449 sv = newSVpv("", 0);
52e1cb5e
JH
2450 SvGROW(sv, sizeof(struct perl_thread) + 1);
2451 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 2452 thr = (Thread) SvPVX(sv);
199100c8 2453 /* debug */
52e1cb5e 2454 memset(thr, 0xab, sizeof(struct perl_thread));
199100c8
MB
2455 markstack = 0;
2456 scopestack = 0;
2457 savestack = 0;
2458 retstack = 0;
2459 dirty = 0;
2460 localizing = 0;
2461 /* end debug */
2462
2463 thr->oursv = sv;
d55594ae 2464 init_stacks(ARGS);
a863c7d1 2465
a863c7d1 2466 curcop = &compiling;
199100c8 2467 thr->cvcache = newHV();
54b9620d 2468 thr->threadsv = newAV();
a863c7d1 2469 thr->specific = newAV();
38a03e6e
MB
2470 thr->errsv = newSVpv("", 0);
2471 thr->errhv = newHV();
a863c7d1
MB
2472 thr->flags = THRf_R_JOINABLE;
2473 MUTEX_INIT(&thr->mutex);
199100c8
MB
2474
2475 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2476 defstash = t->Tdefstash; /* XXX maybe these should */
2477 curstash = t->Tcurstash; /* always be set to main? */
d55594ae
GS
2478
2479
2480 /* top_env needs to be non-zero. It points to an area
2481 in which longjmp() stuff is stored, as C callstack
2482 info there at least is thread specific this has to
2483 be per-thread. Otherwise a 'die' in a thread gives
2484 that thread the C stack of last thread to do an eval {}!
2485 See comments in scope.h
2486 Initialize top entry (as in perl.c for main thread)
2487 */
2488 start_env.je_prev = NULL;
2489 start_env.je_ret = -1;
2490 start_env.je_mustcatch = TRUE;
2491 top_env = &start_env;
2492
199100c8
MB
2493 in_eval = FALSE;
2494 restartop = 0;
2495
2496 tainted = t->Ttainted;
2497 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2498 nrs = newSVsv(t->Tnrs);
2499 rs = newSVsv(t->Trs);
2500 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2501 ofslen = t->Tofslen;
2502 ofs = savepvn(t->Tofs, ofslen);
2503 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2504 chopset = t->Tchopset;
2505 formtarget = newSVsv(t->Tformtarget);
2506 bodytarget = newSVsv(t->Tbodytarget);
2507 toptarget = newSVsv(t->Ttoptarget);
2508
54b9620d
MB
2509 /* Initialise all per-thread SVs that the template thread used */
2510 svp = AvARRAY(t->threadsv);
2511 for (i = 0; i <= AvFILL(t->threadsv); i++, svp++) {
199100c8
MB
2512 if (*svp && *svp != &sv_undef) {
2513 SV *sv = newSVsv(*svp);
54b9620d
MB
2514 av_store(thr->threadsv, i, sv);
2515 sv_magic(sv, 0, 0, &threadsv_names[i], 1);
199100c8 2516 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
54b9620d 2517 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
2518 }
2519 }
2520
a863c7d1
MB
2521 MUTEX_LOCK(&threads_mutex);
2522 nthreads++;
199100c8
MB
2523 thr->tid = ++threadnum;
2524 thr->next = t->next;
2525 thr->prev = t;
2526 t->next = thr;
2527 thr->next->prev = thr;
a863c7d1
MB
2528 MUTEX_UNLOCK(&threads_mutex);
2529
2530#ifdef HAVE_THREAD_INTERN
2531 init_thread_intern(thr);
a863c7d1 2532#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2533 return thr;
2534}
11343788 2535#endif /* USE_THREADS */
760ac839
LW
2536
2537#ifdef HUGE_VAL
2538/*
2539 * This hack is to force load of "huge" support from libm.a
2540 * So it is in perl for (say) POSIX to use.
2541 * Needed for SunOS with Sun's 'acc' for example.
2542 */
2543double
8ac85365 2544Perl_huge(void)
760ac839
LW
2545{
2546 return HUGE_VAL;
2547}
2548#endif
4e35701f 2549
22239a37
NIS
2550#ifdef PERL_GLOBAL_STRUCT
2551struct perl_vars *
2552Perl_GetVars(void)
2553{
2554 return &Perl_Vars;
2555}
2556#endif