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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
PP
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
PP
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{
54aff467 84 dTHX;
bd4080b3 85 Malloc_t ptr;
55497cff 86#ifdef HAS_64K_LIMIT
62b28dd9 87 if (size > 0xffff) {
bf49b057 88 PerlIO_printf(Perl_error_log,
16cebae2 89 "Allocation too large: %lx\n", size) FLUSH;
54aff467 90 my_exit(1);
62b28dd9 91 }
55497cff 92#endif /* HAS_64K_LIMIT */
34de22dd
LW
93#ifdef DEBUGGING
94 if ((long)size < 0)
4f63d024 95 Perl_croak_nocontext("panic: malloc");
34de22dd 96#endif
6ad3d225 97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
6b88bc9c 98 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW
99 if (ptr != Nullch)
100 return ptr;
3280af22 101 else if (PL_nomemok)
7c0587c8 102 return Nullch;
8d063cd8 103 else {
bf49b057 104 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 105 my_exit(1);
4e35701f 106 return Nullch;
8d063cd8
LW
107 }
108 /*NOTREACHED*/
109}
110
f2517201 111/* paranoid version of system's realloc() */
8d063cd8 112
bd4080b3 113Malloc_t
4f63d024 114Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 115{
54aff467 116 dTHX;
bd4080b3 117 Malloc_t ptr;
ecfc5424 118#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 119 Malloc_t PerlMem_realloc();
ecfc5424 120#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 121
55497cff 122#ifdef HAS_64K_LIMIT
5f05dabc 123 if (size > 0xffff) {
bf49b057 124 PerlIO_printf(Perl_error_log,
5f05dabc 125 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 126 my_exit(1);
5f05dabc 127 }
55497cff 128#endif /* HAS_64K_LIMIT */
7614df0c 129 if (!size) {
f2517201 130 safesysfree(where);
7614df0c
JD
131 return NULL;
132 }
133
378cc40b 134 if (!where)
f2517201 135 return safesysmalloc(size);
34de22dd
LW
136#ifdef DEBUGGING
137 if ((long)size < 0)
4f63d024 138 Perl_croak_nocontext("panic: realloc");
34de22dd 139#endif
7614df0c 140 ptr = PerlMem_realloc(where,size);
79072805 141
0b250b9e
GS
142 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++));
143 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 144
8d063cd8
LW
145 if (ptr != Nullch)
146 return ptr;
3280af22 147 else if (PL_nomemok)
7c0587c8 148 return Nullch;
8d063cd8 149 else {
bf49b057 150 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 151 my_exit(1);
4e35701f 152 return Nullch;
8d063cd8
LW
153 }
154 /*NOTREACHED*/
155}
156
f2517201 157/* safe version of system's free() */
8d063cd8 158
54310121 159Free_t
4f63d024 160Perl_safesysfree(Malloc_t where)
8d063cd8 161{
54aff467 162 dTHX;
6b88bc9c 163 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
378cc40b 164 if (where) {
de3bb511 165 /*SUPPRESS 701*/
6ad3d225 166 PerlMem_free(where);
378cc40b 167 }
8d063cd8
LW
168}
169
f2517201 170/* safe version of system's calloc() */
1050c9ca 171
bd4080b3 172Malloc_t
4f63d024 173Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 174{
54aff467 175 dTHX;
bd4080b3 176 Malloc_t ptr;
1050c9ca 177
55497cff 178#ifdef HAS_64K_LIMIT
5f05dabc 179 if (size * count > 0xffff) {
bf49b057 180 PerlIO_printf(Perl_error_log,
5f05dabc 181 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 182 my_exit(1);
5f05dabc 183 }
55497cff 184#endif /* HAS_64K_LIMIT */
1050c9ca
PP
185#ifdef DEBUGGING
186 if ((long)size < 0 || (long)count < 0)
4f63d024 187 Perl_croak_nocontext("panic: calloc");
1050c9ca 188#endif
0b7c1c42 189 size *= count;
6ad3d225 190 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
6b88bc9c 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca
PP
192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca
PP
197 return Nullch;
198 else {
bf49b057 199 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 200 my_exit(1);
4e35701f 201 return Nullch;
1050c9ca
PP
202 }
203 /*NOTREACHED*/
204}
205
a687059c
LW
206#ifdef LEAKTEST
207
8c52afec
IZ
208struct mem_test_strut {
209 union {
210 long type;
211 char c[2];
212 } u;
213 long size;
214};
215
216# define ALIGN sizeof(struct mem_test_strut)
217
218# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219# define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221# define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? MAXYCOUNT - 1 \
225 : ( (size) > 40 \
226 ? ((size) - 1)/8 + 5 \
227 : ((size) - 1)/4))
8d063cd8 228
bd4080b3 229Malloc_t
4f63d024 230Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 231{
8c52afec 232 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 233
8c52afec
IZ
234 xcount[x] += size;
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
8d063cd8 239}
8d063cd8 240
bd4080b3 241Malloc_t
4f63d024 242Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 243{
8c52afec
IZ
244 char *where = (char*)wh;
245
246 if (!wh)
247 return safexmalloc(0,size);
248
249 {
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
253
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
259 }
a687059c
LW
260}
261
262void
4f63d024 263Perl_safexfree(Malloc_t wh)
a687059c 264{
79072805 265 I32 x;
8c52afec
IZ
266 char *where = (char*)wh;
267 MEM_SIZE size;
268
a687059c
LW
269 if (!where)
270 return;
271 where -= ALIGN;
8c52afec 272 size = sizeof_chunk(where);
a687059c 273 x = where[0] + 100 * where[1];
8c52afec
IZ
274 xcount[x] -= size;
275 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
276 safefree(where);
277}
278
bd4080b3 279Malloc_t
4f63d024 280Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 281{
8c52afec
IZ
282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
283 xcount[x] += size;
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
289}
290
864dbfa3 291STATIC void
cea2e8a9 292S_xstat(pTHX_ int flag)
8d063cd8 293{
8c52afec
IZ
294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
8d063cd8 296
8c52afec
IZ
297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] = 0;
299 }
300
bf49b057 301 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 302 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
303 total += xcount[i];
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
306 }
307 if (flag == 0
308 ? xcount[i] /* Have something */
309 : (flag == 2
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 312 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 314 lastxcount[i] = xcount[i];
8c52afec
IZ
315 for (j = 0; j < MAXYCOUNT; j++) {
316 if ( flag == 0
317 ? xycount[i][j] /* Have something */
318 : (flag == 2
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 321 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ
322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
bf49b057 327 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ
328 }
329 }
bf49b057 330 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ
331 }
332 }
333 if (flag != 2) {
bf49b057 334 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ
335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
bf49b057 337 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 338 } else {
bf49b057 339 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 340 }
8d063cd8 341 }
bf49b057 342 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 343 }
8d063cd8 344}
a687059c
LW
345
346#endif /* LEAKTEST */
8d063cd8
LW
347
348/* copy a string up to some (non-backslashed) delimiter, if any */
349
350char *
864dbfa3 351Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 352{
fc36a67e
PP
353 register I32 tolen;
354 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
355 if (*from == '\\') {
356 if (from[1] == delim)
357 from++;
fc36a67e
PP
358 else {
359 if (to < toend)
360 *to++ = *from;
361 tolen++;
362 from++;
363 }
378cc40b 364 }
bedebaa5 365 else if (*from == delim)
8d063cd8 366 break;
fc36a67e
PP
367 if (to < toend)
368 *to++ = *from;
8d063cd8 369 }
bedebaa5
CS
370 if (to < toend)
371 *to = '\0';
fc36a67e 372 *retlen = tolen;
8d063cd8
LW
373 return from;
374}
375
376/* return ptr to little string in big string, NULL if not found */
378cc40b 377/* This routine was donated by Corey Satten. */
8d063cd8
LW
378
379char *
864dbfa3 380Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 381{
08105a92 382 register const char *s, *x;
79072805 383 register I32 first;
378cc40b 384
a687059c 385 if (!little)
08105a92 386 return (char*)big;
a687059c 387 first = *little++;
378cc40b 388 if (!first)
08105a92 389 return (char*)big;
378cc40b
LW
390 while (*big) {
391 if (*big++ != first)
392 continue;
393 for (x=big,s=little; *s; /**/ ) {
394 if (!*x)
395 return Nullch;
396 if (*s++ != *x++) {
397 s--;
398 break;
399 }
400 }
401 if (!*s)
08105a92 402 return (char*)(big-1);
378cc40b
LW
403 }
404 return Nullch;
405}
8d063cd8 406
a687059c
LW
407/* same as instr but allow embedded nulls */
408
409char *
864dbfa3 410Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 411{
08105a92 412 register const char *s, *x;
79072805 413 register I32 first = *little;
08105a92 414 register const char *littleend = lend;
378cc40b 415
a0d0e21e 416 if (!first && little >= littleend)
08105a92 417 return (char*)big;
de3bb511
LW
418 if (bigend - big < littleend - little)
419 return Nullch;
a687059c
LW
420 bigend -= littleend - little++;
421 while (big <= bigend) {
422 if (*big++ != first)
423 continue;
424 for (x=big,s=little; s < littleend; /**/ ) {
425 if (*s++ != *x++) {
426 s--;
427 break;
428 }
429 }
430 if (s >= littleend)
08105a92 431 return (char*)(big-1);
378cc40b 432 }
a687059c
LW
433 return Nullch;
434}
435
436/* reverse of the above--find last substring */
437
438char *
864dbfa3 439Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 440{
08105a92
GS
441 register const char *bigbeg;
442 register const char *s, *x;
79072805 443 register I32 first = *little;
08105a92 444 register const char *littleend = lend;
a687059c 445
a0d0e21e 446 if (!first && little >= littleend)
08105a92 447 return (char*)bigend;
a687059c
LW
448 bigbeg = big;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
451 if (*big-- != first)
452 continue;
453 for (x=big+2,s=little; s < littleend; /**/ ) {
454 if (*s++ != *x++) {
455 s--;
456 break;
457 }
458 }
459 if (s >= littleend)
08105a92 460 return (char*)(big+1);
378cc40b 461 }
a687059c 462 return Nullch;
378cc40b 463}
a687059c 464
bbce6d69
PP
465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
864dbfa3 469Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 470{
36477c24
PP
471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69
PP
475 for (i = 0; i < 256; i++) {
476 if (isUPPER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 478 else if (isLOWER_LC(i))
22c35a8c 479 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 480 else
22c35a8c 481 PL_fold_locale[i] = i;
bbce6d69 482 }
bbce6d69 483
36477c24
PP
484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69
PP
486
487/*
488 * Set up for a new collation locale.
489 */
490void
864dbfa3 491Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 492{
36477c24
PP
493#ifdef USE_LOCALE_COLLATE
494
bbce6d69 495 if (! newcoll) {
3280af22
NIS
496 if (PL_collation_name) {
497 ++PL_collation_ix;
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
bbce6d69
PP
503 }
504 return;
505 }
506
3280af22
NIS
507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
508 ++PL_collation_ix;
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 512
bbce6d69
PP
513 {
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516#define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
521 if (mult < 1)
cea2e8a9 522 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
bbce6d69 525 }
bbce6d69 526 }
bbce6d69 527
36477c24
PP
528#endif /* USE_LOCALE_COLLATE */
529}
bbce6d69 530
097ee67d 531void
51371543 532Perl_set_numeric_radix(pTHX)
097ee67d
JH
533{
534#ifdef USE_LOCALE_NUMERIC
535# ifdef HAS_LOCALECONV
536 struct lconv* lc;
537
538 lc = localeconv();
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
544 else
545 PL_numeric_radix = 0;
546# endif /* HAS_LOCALECONV */
547#else
548 PL_numeric_radix = 0;
549#endif /* USE_LOCALE_NUMERIC */
550}
551
bbce6d69
PP
552/*
553 * Set up for a new numeric locale.
554 */
555void
864dbfa3 556Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 557{
36477c24
PP
558#ifdef USE_LOCALE_NUMERIC
559
bbce6d69 560 if (! newnum) {
3280af22
NIS
561 if (PL_numeric_name) {
562 Safefree(PL_numeric_name);
563 PL_numeric_name = NULL;
564 PL_numeric_standard = TRUE;
565 PL_numeric_local = TRUE;
bbce6d69
PP
566 }
567 return;
568 }
569
3280af22
NIS
570 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
571 Safefree(PL_numeric_name);
572 PL_numeric_name = savepv(newnum);
573 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
574 PL_numeric_local = TRUE;
51371543 575 set_numeric_radix();
bbce6d69 576 }
36477c24
PP
577
578#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
579}
580
581void
864dbfa3 582Perl_set_numeric_standard(pTHX)
bbce6d69 583{
5f05dabc
PP
584#ifdef USE_LOCALE_NUMERIC
585
3280af22 586 if (! PL_numeric_standard) {
bbce6d69 587 setlocale(LC_NUMERIC, "C");
3280af22
NIS
588 PL_numeric_standard = TRUE;
589 PL_numeric_local = FALSE;
bbce6d69 590 }
5f05dabc
PP
591
592#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
593}
594
595void
864dbfa3 596Perl_set_numeric_local(pTHX)
bbce6d69 597{
5f05dabc
PP
598#ifdef USE_LOCALE_NUMERIC
599
3280af22
NIS
600 if (! PL_numeric_local) {
601 setlocale(LC_NUMERIC, PL_numeric_name);
602 PL_numeric_standard = FALSE;
603 PL_numeric_local = TRUE;
51371543 604 set_numeric_radix();
bbce6d69 605 }
bbce6d69 606
36477c24 607#endif /* USE_LOCALE_NUMERIC */
5f05dabc 608}
36477c24 609
36477c24
PP
610/*
611 * Initialize locale awareness.
612 */
f0c5b223 613int
864dbfa3 614Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
615{
616 int ok = 1;
617 /* returns
618 * 1 = set ok or not applicable,
619 * 0 = fallback to C locale,
620 * -1 = fallback to C locale failed
621 */
bbce6d69 622
36477c24 623#ifdef USE_LOCALE
bbce6d69 624
36477c24 625#ifdef USE_LOCALE_CTYPE
bbce6d69 626 char *curctype = NULL;
36477c24
PP
627#endif /* USE_LOCALE_CTYPE */
628#ifdef USE_LOCALE_COLLATE
bbce6d69 629 char *curcoll = NULL;
36477c24
PP
630#endif /* USE_LOCALE_COLLATE */
631#ifdef USE_LOCALE_NUMERIC
bbce6d69 632 char *curnum = NULL;
36477c24 633#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
634#ifdef __GLIBC__
635 char *language = PerlEnv_getenv("LANGUAGE");
636#endif
76e3520e
GS
637 char *lc_all = PerlEnv_getenv("LC_ALL");
638 char *lang = PerlEnv_getenv("LANG");
bbce6d69 639 bool setlocale_failure = FALSE;
f0c5b223 640
02b32252
CS
641#ifdef LOCALE_ENVIRON_REQUIRED
642
643 /*
644 * Ultrix setlocale(..., "") fails if there are no environment
645 * variables from which to get a locale name.
646 */
647
648 bool done = FALSE;
649
650#ifdef LC_ALL
651 if (lang) {
652 if (setlocale(LC_ALL, ""))
653 done = TRUE;
654 else
655 setlocale_failure = TRUE;
656 }
0644c9cb 657 if (!setlocale_failure) {
02b32252 658#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
659 if (! (curctype =
660 setlocale(LC_CTYPE,
661 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_CTYPE */
665#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
666 if (! (curcoll =
667 setlocale(LC_COLLATE,
668 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
669 ? "" : Nullch)))
670 setlocale_failure = TRUE;
671#endif /* USE_LOCALE_COLLATE */
672#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
673 if (! (curnum =
674 setlocale(LC_NUMERIC,
675 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
676 ? "" : Nullch)))
677 setlocale_failure = TRUE;
678#endif /* USE_LOCALE_NUMERIC */
679 }
680
0644c9cb 681#endif /* LC_ALL */
02b32252 682
0644c9cb 683#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 684
0644c9cb 685#ifdef LC_ALL
bbce6d69
PP
686 if (! setlocale(LC_ALL, ""))
687 setlocale_failure = TRUE;
0644c9cb 688#endif /* LC_ALL */
bbce6d69 689
0644c9cb 690 if (!setlocale_failure) {
36477c24 691#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
692 if (! (curctype = setlocale(LC_CTYPE, "")))
693 setlocale_failure = TRUE;
36477c24
PP
694#endif /* USE_LOCALE_CTYPE */
695#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
696 if (! (curcoll = setlocale(LC_COLLATE, "")))
697 setlocale_failure = TRUE;
36477c24
PP
698#endif /* USE_LOCALE_COLLATE */
699#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
700 if (! (curnum = setlocale(LC_NUMERIC, "")))
701 setlocale_failure = TRUE;
36477c24 702#endif /* USE_LOCALE_NUMERIC */
0644c9cb 703 }
02b32252 704
5f05dabc
PP
705 if (setlocale_failure) {
706 char *p;
707 bool locwarn = (printwarn > 1 ||
708 printwarn &&
76e3520e 709 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 710
5f05dabc
PP
711 if (locwarn) {
712#ifdef LC_ALL
713
bf49b057 714 PerlIO_printf(Perl_error_log,
5f05dabc
PP
715 "perl: warning: Setting locale failed.\n");
716
717#else /* !LC_ALL */
718
bf49b057 719 PerlIO_printf(Perl_error_log,
bbce6d69 720 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 721#ifdef USE_LOCALE_CTYPE
bbce6d69 722 if (! curctype)
bf49b057 723 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24
PP
724#endif /* USE_LOCALE_CTYPE */
725#ifdef USE_LOCALE_COLLATE
bbce6d69 726 if (! curcoll)
bf49b057 727 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24
PP
728#endif /* USE_LOCALE_COLLATE */
729#ifdef USE_LOCALE_NUMERIC
bbce6d69 730 if (! curnum)
bf49b057 731 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 732#endif /* USE_LOCALE_NUMERIC */
bf49b057 733 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 734
5f05dabc
PP
735#endif /* LC_ALL */
736
bf49b057 737 PerlIO_printf(Perl_error_log,
bbce6d69 738 "perl: warning: Please check that your locale settings:\n");
ef7eada9 739
3aeabbed 740#ifdef __GLIBC__
bf49b057 741 PerlIO_printf(Perl_error_log,
3aeabbed
JH
742 "\tLANGUAGE = %c%s%c,\n",
743 language ? '"' : '(',
744 language ? language : "unset",
745 language ? '"' : ')');
746#endif
747
bf49b057 748 PerlIO_printf(Perl_error_log,
bbce6d69
PP
749 "\tLC_ALL = %c%s%c,\n",
750 lc_all ? '"' : '(',
751 lc_all ? lc_all : "unset",
752 lc_all ? '"' : ')');
5f05dabc
PP
753
754 {
755 char **e;
756 for (e = environ; *e; e++) {
757 if (strnEQ(*e, "LC_", 3)
758 && strnNE(*e, "LC_ALL=", 7)
759 && (p = strchr(*e, '=')))
bf49b057 760 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 761 (int)(p - *e), *e, p + 1);
5f05dabc
PP
762 }
763 }
764
bf49b057 765 PerlIO_printf(Perl_error_log,
bbce6d69 766 "\tLANG = %c%s%c\n",
5f05dabc 767 lang ? '"' : '(',
bbce6d69
PP
768 lang ? lang : "unset",
769 lang ? '"' : ')');
ef7eada9 770
bf49b057 771 PerlIO_printf(Perl_error_log,
bbce6d69 772 " are supported and installed on your system.\n");
5f05dabc 773 }
ef7eada9 774
5f05dabc
PP
775#ifdef LC_ALL
776
777 if (setlocale(LC_ALL, "C")) {
778 if (locwarn)
bf49b057 779 PerlIO_printf(Perl_error_log,
5f05dabc 780 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 781 ok = 0;
ef7eada9 782 }
5f05dabc
PP
783 else {
784 if (locwarn)
bf49b057 785 PerlIO_printf(Perl_error_log,
5f05dabc
PP
786 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
787 ok = -1;
788 }
bbce6d69 789
5f05dabc
PP
790#else /* ! LC_ALL */
791
792 if (0
36477c24 793#ifdef USE_LOCALE_CTYPE
5f05dabc 794 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
795#endif /* USE_LOCALE_CTYPE */
796#ifdef USE_LOCALE_COLLATE
5f05dabc 797 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
798#endif /* USE_LOCALE_COLLATE */
799#ifdef USE_LOCALE_NUMERIC
5f05dabc 800 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 801#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
802 )
803 {
804 if (locwarn)
bf49b057 805 PerlIO_printf(Perl_error_log,
5f05dabc
PP
806 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
807 ok = -1;
bbce6d69 808 }
5f05dabc 809
bbce6d69 810#endif /* ! LC_ALL */
5f05dabc
PP
811
812#ifdef USE_LOCALE_CTYPE
813 curctype = setlocale(LC_CTYPE, Nullch);
814#endif /* USE_LOCALE_CTYPE */
815#ifdef USE_LOCALE_COLLATE
816 curcoll = setlocale(LC_COLLATE, Nullch);
817#endif /* USE_LOCALE_COLLATE */
818#ifdef USE_LOCALE_NUMERIC
819 curnum = setlocale(LC_NUMERIC, Nullch);
820#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
821 }
822
36477c24 823#ifdef USE_LOCALE_CTYPE
864dbfa3 824 new_ctype(curctype);
36477c24 825#endif /* USE_LOCALE_CTYPE */
bbce6d69 826
36477c24 827#ifdef USE_LOCALE_COLLATE
864dbfa3 828 new_collate(curcoll);
36477c24 829#endif /* USE_LOCALE_COLLATE */
bbce6d69 830
36477c24 831#ifdef USE_LOCALE_NUMERIC
864dbfa3 832 new_numeric(curnum);
36477c24 833#endif /* USE_LOCALE_NUMERIC */
ef7eada9 834
36477c24 835#endif /* USE_LOCALE */
ef7eada9 836
f0c5b223
TB
837 return ok;
838}
839
bbce6d69
PP
840/* Backwards compatibility. */
841int
864dbfa3 842Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 843{
864dbfa3 844 return init_i18nl10n(printwarn);
bbce6d69 845}
ef7eada9 846
36477c24 847#ifdef USE_LOCALE_COLLATE
ef7eada9 848
bbce6d69
PP
849/*
850 * mem_collxfrm() is a bit like strxfrm() but with two important
851 * differences. First, it handles embedded NULs. Second, it allocates
852 * a bit more memory than needed for the transformed data itself.
853 * The real transformed data begins at offset sizeof(collationix).
854 * Please see sv_collxfrm() to see how this is used.
855 */
856char *
864dbfa3 857Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
858{
859 char *xbuf;
76e3520e 860 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
861
862 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
863 /* the +1 is for the terminating NUL. */
864
3280af22 865 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 866 New(171, xbuf, xAlloc, char);
bbce6d69
PP
867 if (! xbuf)
868 goto bad;
869
3280af22
NIS
870 *(U32*)xbuf = PL_collation_ix;
871 xout = sizeof(PL_collation_ix);
bbce6d69
PP
872 for (xin = 0; xin < len; ) {
873 SSize_t xused;
874
875 for (;;) {
76e3520e 876 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
877 if (xused == -1)
878 goto bad;
76e3520e 879 if (xused < xAlloc - xout)
bbce6d69 880 break;
76e3520e
GS
881 xAlloc = (2 * xAlloc) + 1;
882 Renew(xbuf, xAlloc, char);
bbce6d69
PP
883 if (! xbuf)
884 goto bad;
885 }
ef7eada9 886
bbce6d69
PP
887 xin += strlen(s + xin) + 1;
888 xout += xused;
889
890 /* Embedded NULs are understood but silently skipped
891 * because they make no sense in locale collation. */
892 }
ef7eada9 893
bbce6d69 894 xbuf[xout] = '\0';
3280af22 895 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
896 return xbuf;
897
898 bad:
899 Safefree(xbuf);
900 *xlen = 0;
901 return NULL;
ef7eada9
JH
902}
903
36477c24 904#endif /* USE_LOCALE_COLLATE */
bbce6d69 905
cf93c79d
IZ
906#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
907
908/* As a space optimization, we do not compile tables for strings of length
909 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
910 special-cased in fbm_instr().
911
912 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
913
378cc40b 914void
7506f9c3 915Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 916{
942e002e
GS
917 register U8 *s;
918 register U8 *table;
79072805 919 register U32 i;
0b71040e 920 STRLEN len;
79072805
LW
921 I32 rarest = 0;
922 U32 frequency = 256;
923
cf93c79d
IZ
924 if (flags & FBMcf_TAIL)
925 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 926 s = (U8*)SvPV_force(sv, len);
07f14f54 927 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
928 if (len == 0) /* TAIL might be on on a zero-length string. */
929 return;
02128f11 930 if (len > 2) {
7506f9c3 931 U8 mlen;
cf93c79d
IZ
932 unsigned char *sb;
933
7506f9c3 934 if (len > 255)
cf93c79d 935 mlen = 255;
7506f9c3
GS
936 else
937 mlen = (U8)len;
938 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 939 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS
940 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
941 memset((void*)table, mlen, 256);
942 table[-1] = (U8)flags;
02128f11 943 i = 0;
7506f9c3 944 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ
945 while (s >= sb) {
946 if (table[*s] == mlen)
7506f9c3 947 table[*s] = (U8)i;
cf93c79d
IZ
948 s--, i++;
949 }
378cc40b 950 }
bbce6d69 951 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 952 SvVALID_on(sv);
378cc40b 953
463ee0b2 954 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 955 for (i = 0; i < len; i++) {
22c35a8c 956 if (PL_freq[s[i]] < frequency) {
bbce6d69 957 rarest = i;
22c35a8c 958 frequency = PL_freq[s[i]];
378cc40b
LW
959 }
960 }
79072805
LW
961 BmRARE(sv) = s[rarest];
962 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
963 BmUSEFUL(sv) = 100; /* Initial value */
964 if (flags & FBMcf_TAIL)
965 SvTAIL_on(sv);
7506f9c3
GS
966 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
967 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
968}
969
cf93c79d
IZ
970/* If SvTAIL(littlestr), it has a fake '\n' at end. */
971/* If SvTAIL is actually due to \Z or \z, this gives false positives
972 if multiline */
973
378cc40b 974char *
864dbfa3 975Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 976{
a687059c 977 register unsigned char *s;
cf93c79d
IZ
978 STRLEN l;
979 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
980 register STRLEN littlelen = l;
981 register I32 multiline = flags & FBMrf_MULTILINE;
982
983 if (bigend - big < littlelen) {
984 check_tail:
985 if ( SvTAIL(littlestr)
986 && (bigend - big == littlelen - 1)
987 && (littlelen == 1
988 || *big == *little && memEQ(big, little, littlelen - 1)))
989 return (char*)big;
990 return Nullch;
991 }
378cc40b 992
cf93c79d
IZ
993 if (littlelen <= 2) { /* Special-cased */
994 register char c;
995
996 if (littlelen == 1) {
997 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
998 /* Know that bigend != big. */
999 if (bigend[-1] == '\n')
1000 return (char *)(bigend - 1);
1001 return (char *) bigend;
1002 }
1003 s = big;
1004 while (s < bigend) {
1005 if (*s == *little)
1006 return (char *)s;
1007 s++;
1008 }
1009 if (SvTAIL(littlestr))
1010 return (char *) bigend;
1011 return Nullch;
1012 }
1013 if (!littlelen)
1014 return (char*)big; /* Cannot be SvTAIL! */
1015
1016 /* littlelen is 2 */
1017 if (SvTAIL(littlestr) && !multiline) {
1018 if (bigend[-1] == '\n' && bigend[-2] == *little)
1019 return (char*)bigend - 2;
1020 if (bigend[-1] == *little)
1021 return (char*)bigend - 1;
1022 return Nullch;
1023 }
1024 {
1025 /* This should be better than FBM if c1 == c2, and almost
1026 as good otherwise: maybe better since we do less indirection.
1027 And we save a lot of memory by caching no table. */
1028 register unsigned char c1 = little[0];
1029 register unsigned char c2 = little[1];
1030
1031 s = big + 1;
1032 bigend--;
1033 if (c1 != c2) {
1034 while (s <= bigend) {
1035 if (s[0] == c2) {
1036 if (s[-1] == c1)
1037 return (char*)s - 1;
1038 s += 2;
1039 continue;
3fe6f2dc 1040 }
cf93c79d
IZ
1041 next_chars:
1042 if (s[0] == c1) {
1043 if (s == bigend)
1044 goto check_1char_anchor;
1045 if (s[1] == c2)
1046 return (char*)s;
1047 else {
1048 s++;
1049 goto next_chars;
1050 }
1051 }
1052 else
1053 s += 2;
1054 }
1055 goto check_1char_anchor;
1056 }
1057 /* Now c1 == c2 */
1058 while (s <= bigend) {
1059 if (s[0] == c1) {
1060 if (s[-1] == c1)
1061 return (char*)s - 1;
1062 if (s == bigend)
1063 goto check_1char_anchor;
1064 if (s[1] == c1)
1065 return (char*)s;
1066 s += 3;
02128f11 1067 }
c277df42 1068 else
cf93c79d 1069 s += 2;
c277df42 1070 }
c277df42 1071 }
cf93c79d
IZ
1072 check_1char_anchor: /* One char and anchor! */
1073 if (SvTAIL(littlestr) && (*bigend == *little))
1074 return (char *)bigend; /* bigend is already decremented. */
1075 return Nullch;
d48672a2 1076 }
cf93c79d 1077 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1078 s = bigend - littlelen;
7506f9c3 1079 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ
1080 /* Automatically of length > 2 */
1081 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1082 {
bbce6d69 1083 return (char*)s; /* how sweet it is */
7506f9c3
GS
1084 }
1085 if (s[1] == *little
1086 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1087 {
cf93c79d 1088 return (char*)s + 1; /* how sweet it is */
7506f9c3 1089 }
02128f11
IZ
1090 return Nullch;
1091 }
cf93c79d
IZ
1092 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1093 char *b = ninstr((char*)big,(char*)bigend,
1094 (char*)little, (char*)little + littlelen);
1095
1096 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1097 /* Chop \n from littlestr: */
1098 s = bigend - littlelen + 1;
7506f9c3
GS
1099 if (*s == *little
1100 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1101 {
3fe6f2dc 1102 return (char*)s;
7506f9c3 1103 }
cf93c79d 1104 return Nullch;
a687059c 1105 }
cf93c79d 1106 return b;
a687059c 1107 }
cf93c79d
IZ
1108
1109 { /* Do actual FBM. */
1110 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1111 register unsigned char *oldlittle;
1112
1113 if (littlelen > bigend - big)
1114 return Nullch;
1115 --littlelen; /* Last char found by table lookup */
1116
1117 s = big + littlelen;
1118 little += littlelen; /* last char */
1119 oldlittle = little;
1120 if (s < bigend) {
1121 register I32 tmp;
1122
1123 top2:
1124 /*SUPPRESS 560*/
7506f9c3 1125 if ((tmp = table[*s])) {
62b28dd9 1126#ifdef POINTERRIGOR
cf93c79d
IZ
1127 if (bigend - s > tmp) {
1128 s += tmp;
1129 goto top2;
1130 }
bbce6d69 1131 s += tmp;
62b28dd9 1132#else
cf93c79d 1133 if ((s += tmp) < bigend)
62b28dd9 1134 goto top2;
cf93c79d
IZ
1135#endif
1136 goto check_end;
1137 }
1138 else { /* less expensive than calling strncmp() */
1139 register unsigned char *olds = s;
1140
1141 tmp = littlelen;
1142
1143 while (tmp--) {
1144 if (*--s == *--little)
1145 continue;
1146 differ:
1147 s = olds + 1; /* here we pay the price for failure */
1148 little = oldlittle;
1149 if (s < bigend) /* fake up continue to outer loop */
1150 goto top2;
1151 goto check_end;
1152 }
1153 return (char *)s;
a687059c 1154 }
378cc40b 1155 }
cf93c79d
IZ
1156 check_end:
1157 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1158 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1159 return (char*)bigend - littlelen;
1160 return Nullch;
378cc40b 1161 }
378cc40b
LW
1162}
1163
c277df42
IZ
1164/* start_shift, end_shift are positive quantities which give offsets
1165 of ends of some substring of bigstr.
1166 If `last' we want the last occurence.
1167 old_posp is the way of communication between consequent calls if
1168 the next call needs to find the .
1169 The initial *old_posp should be -1.
cf93c79d
IZ
1170
1171 Note that we take into account SvTAIL, so one can get extra
1172 optimizations if _ALL flag is set.
c277df42
IZ
1173 */
1174
cf93c79d
IZ
1175/* If SvTAIL is actually due to \Z or \z, this gives false positives
1176 if PL_multiline. In fact if !PL_multiline the autoritative answer
1177 is not supported yet. */
1178
378cc40b 1179char *
864dbfa3 1180Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1181{
5c0ca799 1182 dTHR;
a687059c
LW
1183 register unsigned char *s, *x;
1184 register unsigned char *big;
79072805
LW
1185 register I32 pos;
1186 register I32 previous;
1187 register I32 first;
a687059c 1188 register unsigned char *little;
c277df42 1189 register I32 stop_pos;
a687059c 1190 register unsigned char *littleend;
c277df42 1191 I32 found = 0;
378cc40b 1192
c277df42 1193 if (*old_posp == -1
3280af22 1194 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1195 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1196 cant_find:
1197 if ( BmRARE(littlestr) == '\n'
1198 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1199 little = (unsigned char *)(SvPVX(littlestr));
1200 littleend = little + SvCUR(littlestr);
1201 first = *little++;
1202 goto check_tail;
1203 }
378cc40b 1204 return Nullch;
cf93c79d
IZ
1205 }
1206
463ee0b2 1207 little = (unsigned char *)(SvPVX(littlestr));
79072805 1208 littleend = little + SvCUR(littlestr);
378cc40b 1209 first = *little++;
c277df42 1210 /* The value of pos we can start at: */
79072805 1211 previous = BmPREVIOUS(littlestr);
463ee0b2 1212 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1213 /* The value of pos we can stop at: */
1214 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1215 if (previous + start_shift > stop_pos) {
1216 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1217 goto check_tail;
1218 return Nullch;
1219 }
c277df42 1220 while (pos < previous + start_shift) {
3280af22 1221 if (!(pos += PL_screamnext[pos]))
cf93c79d 1222 goto cant_find;
378cc40b 1223 }
de3bb511 1224#ifdef POINTERRIGOR
bbce6d69 1225 do {
ef64f398 1226 if (pos >= stop_pos) break;
bbce6d69
PP
1227 if (big[pos-previous] != first)
1228 continue;
1229 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1230 if (*s++ != *x++) {
1231 s--;
1232 break;
de3bb511 1233 }
bbce6d69 1234 }
c277df42
IZ
1235 if (s == littleend) {
1236 *old_posp = pos;
1237 if (!last) return (char *)(big+pos-previous);
1238 found = 1;
1239 }
6b88bc9c 1240 } while ( pos += PL_screamnext[pos] );
c277df42 1241 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1242#else /* !POINTERRIGOR */
1243 big -= previous;
bbce6d69 1244 do {
ef64f398 1245 if (pos >= stop_pos) break;
bbce6d69
PP
1246 if (big[pos] != first)
1247 continue;
1248 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1249 if (*s++ != *x++) {
1250 s--;
1251 break;
378cc40b 1252 }
bbce6d69 1253 }
c277df42
IZ
1254 if (s == littleend) {
1255 *old_posp = pos;
1256 if (!last) return (char *)(big+pos);
1257 found = 1;
1258 }
3280af22 1259 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1260 if (last && found)
1261 return (char *)(big+(*old_posp));
de3bb511 1262#endif /* POINTERRIGOR */
cf93c79d
IZ
1263 check_tail:
1264 if (!SvTAIL(littlestr) || (end_shift > 0))
1265 return Nullch;
1266 /* Ignore the trailing "\n". This code is not microoptimized */
1267 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1268 stop_pos = littleend - little; /* Actual littlestr len */
1269 if (stop_pos == 0)
1270 return (char*)big;
1271 big -= stop_pos;
1272 if (*big == first
1273 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1274 return (char*)big;
1275 return Nullch;
8d063cd8
LW
1276}
1277
79072805 1278I32
864dbfa3 1279Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1280{
bbce6d69
PP
1281 register U8 *a = (U8 *)s1;
1282 register U8 *b = (U8 *)s2;
79072805 1283 while (len--) {
22c35a8c 1284 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1285 return 1;
1286 a++,b++;
1287 }
1288 return 0;
1289}
1290
1291I32
864dbfa3 1292Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1293{
1294 register U8 *a = (U8 *)s1;
1295 register U8 *b = (U8 *)s2;
1296 while (len--) {
22c35a8c 1297 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1298 return 1;
1299 a++,b++;
79072805
LW
1300 }
1301 return 0;
1302}
1303
8d063cd8
LW
1304/* copy a string to a safe spot */
1305
1306char *
864dbfa3 1307Perl_savepv(pTHX_ const char *sv)
8d063cd8 1308{
a687059c 1309 register char *newaddr;
8d063cd8 1310
79072805
LW
1311 New(902,newaddr,strlen(sv)+1,char);
1312 (void)strcpy(newaddr,sv);
8d063cd8
LW
1313 return newaddr;
1314}
1315
a687059c
LW
1316/* same thing but with a known length */
1317
1318char *
864dbfa3 1319Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1320{
1321 register char *newaddr;
1322
1323 New(903,newaddr,len+1,char);
79072805 1324 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1325 newaddr[len] = '\0'; /* is now */
1326 return newaddr;
1327}
1328
cea2e8a9 1329/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1330
76e3520e 1331STATIC SV *
cea2e8a9 1332S_mess_alloc(pTHX)
fc36a67e 1333{
e72dc28c 1334 dTHR;
fc36a67e
PP
1335 SV *sv;
1336 XPVMG *any;
1337
e72dc28c
GS
1338 if (!PL_dirty)
1339 return sv_2mortal(newSVpvn("",0));
1340
0372dbb6
GS
1341 if (PL_mess_sv)
1342 return PL_mess_sv;
1343
fc36a67e
PP
1344 /* Create as PVMG now, to avoid any upgrading later */
1345 New(905, sv, 1, SV);
1346 Newz(905, any, 1, XPVMG);
1347 SvFLAGS(sv) = SVt_PVMG;
1348 SvANY(sv) = (void*)any;
1349 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1350 PL_mess_sv = sv;
fc36a67e
PP
1351 return sv;
1352}
1353
c5be433b 1354#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1355char *
1356Perl_form_nocontext(const char* pat, ...)
1357{
1358 dTHX;
c5be433b 1359 char *retval;
cea2e8a9
GS
1360 va_list args;
1361 va_start(args, pat);
c5be433b 1362 retval = vform(pat, &args);
cea2e8a9 1363 va_end(args);
c5be433b 1364 return retval;
cea2e8a9 1365}
c5be433b 1366#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1367
8990e307 1368char *
864dbfa3 1369Perl_form(pTHX_ const char* pat, ...)
8990e307 1370{
c5be433b 1371 char *retval;
46fc3d4c 1372 va_list args;
46fc3d4c 1373 va_start(args, pat);
c5be433b 1374 retval = vform(pat, &args);
46fc3d4c 1375 va_end(args);
c5be433b
GS
1376 return retval;
1377}
1378
1379char *
1380Perl_vform(pTHX_ const char *pat, va_list *args)
1381{
1382 SV *sv = mess_alloc();
1383 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1384 return SvPVX(sv);
46fc3d4c 1385}
a687059c 1386
5a844595
GS
1387#if defined(PERL_IMPLICIT_CONTEXT)
1388SV *
1389Perl_mess_nocontext(const char *pat, ...)
1390{
1391 dTHX;
1392 SV *retval;
1393 va_list args;
1394 va_start(args, pat);
1395 retval = vmess(pat, &args);
1396 va_end(args);
1397 return retval;
1398}
1399#endif /* PERL_IMPLICIT_CONTEXT */
1400
06bf62c7 1401SV *
5a844595
GS
1402Perl_mess(pTHX_ const char *pat, ...)
1403{
1404 SV *retval;
1405 va_list args;
1406 va_start(args, pat);
1407 retval = vmess(pat, &args);
1408 va_end(args);
1409 return retval;
1410}
1411
1412SV *
1413Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1414{
e72dc28c 1415 SV *sv = mess_alloc();
46fc3d4c
PP
1416 static char dgd[] = " during global destruction.\n";
1417
fc36a67e 1418 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1419 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1420 dTHR;
cf2093f6 1421#ifdef IV_IS_QUAD
b9c39e73 1422 if (PL_curcop->cop_line)
cf2093f6
JH
1423 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1424 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1425#else
b9c39e73 1426 if (PL_curcop->cop_line)
cea2e8a9 1427 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1428 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1429#endif
515f54a1
GS
1430 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1431 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1432 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cf2093f6
JH
1433#ifdef IV_IS_QUAD
1434 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1435 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1436 line_mode ? "line" : "chunk",
1437 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1438#else
cea2e8a9 1439 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS
1440 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1441 line_mode ? "line" : "chunk",
1442 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1443#endif
a687059c 1444 }
9efbc0eb 1445#ifdef USE_THREADS
e8e6f333
GS
1446 if (thr->tid)
1447 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1448#endif
515f54a1 1449 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1450 }
06bf62c7 1451 return sv;
a687059c
LW
1452}
1453
c5be433b
GS
1454OP *
1455Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1456{
5dc0d613 1457 dTHR;
36477c24 1458 char *message;
3280af22 1459 int was_in_eval = PL_in_eval;
36477c24
PP
1460 HV *stash;
1461 GV *gv;
1462 CV *cv;
06bf62c7
GS
1463 SV *msv;
1464 STRLEN msglen;
36477c24 1465
bf49b057 1466 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1467 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1468 thr, PL_curstack, PL_mainstack));
36477c24 1469
06bf62c7 1470 if (pat) {
5a844595
GS
1471 msv = vmess(pat, args);
1472 if (PL_errors && SvCUR(PL_errors)) {
1473 sv_catsv(PL_errors, msv);
1474 message = SvPV(PL_errors, msglen);
1475 SvCUR_set(PL_errors, 0);
1476 }
1477 else
1478 message = SvPV(msv,msglen);
06bf62c7
GS
1479 }
1480 else {
1481 message = Nullch;
1482 }
36477c24 1483
bf49b057 1484 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1485 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1486 thr, message, PL_diehook));
3280af22 1487 if (PL_diehook) {
cea2e8a9 1488 /* sv_2cv might call Perl_croak() */
3280af22 1489 SV *olddiehook = PL_diehook;
1738f5c4 1490 ENTER;
3280af22
NIS
1491 SAVESPTR(PL_diehook);
1492 PL_diehook = Nullsv;
1738f5c4
CS
1493 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1494 LEAVE;
1495 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1496 dSP;
774d564b
PP
1497 SV *msg;
1498
1499 ENTER;
79cb57f6 1500 if (message) {
06bf62c7 1501 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1502 SvREADONLY_on(msg);
1503 SAVEFREESV(msg);
1504 }
1505 else {
1506 msg = ERRSV;
1507 }
1738f5c4 1508
e788e7d3 1509 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1510 PUSHMARK(SP);
1738f5c4
CS
1511 XPUSHs(msg);
1512 PUTBACK;
a7c6d244
NIS
1513 /* HACK - REVISIT - avoid CATCH_SET(TRUE) in call_sv()
1514 or we come back here due to a JMPENV_JMP() and do
1515 a POPSTACK - but die_where() will have already done
1516 one as it unwound - NI-S 1999/08/14 */
1517 call_sv((SV*)cv, G_DISCARD|G_NOCATCH);
d3acc0f7 1518 POPSTACK;
774d564b 1519 LEAVE;
1738f5c4 1520 }
36477c24
PP
1521 }
1522
06bf62c7 1523 PL_restartop = die_where(message, msglen);
bf49b057 1524 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1525 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1526 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1527 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1528 JMPENV_JUMP(3);
3280af22 1529 return PL_restartop;
36477c24
PP
1530}
1531
c5be433b 1532#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1533OP *
1534Perl_die_nocontext(const char* pat, ...)
a687059c 1535{
cea2e8a9
GS
1536 dTHX;
1537 OP *o;
a687059c 1538 va_list args;
cea2e8a9 1539 va_start(args, pat);
c5be433b 1540 o = vdie(pat, &args);
cea2e8a9
GS
1541 va_end(args);
1542 return o;
1543}
c5be433b 1544#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1545
1546OP *
1547Perl_die(pTHX_ const char* pat, ...)
1548{
1549 OP *o;
1550 va_list args;
1551 va_start(args, pat);
c5be433b 1552 o = vdie(pat, &args);
cea2e8a9
GS
1553 va_end(args);
1554 return o;
1555}
1556
c5be433b
GS
1557void
1558Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS
1559{
1560 dTHR;
de3bb511 1561 char *message;
748a9306
LW
1562 HV *stash;
1563 GV *gv;
1564 CV *cv;
06bf62c7
GS
1565 SV *msv;
1566 STRLEN msglen;
a687059c 1567
5a844595
GS
1568 msv = vmess(pat, args);
1569 if (PL_errors && SvCUR(PL_errors)) {
1570 sv_catsv(PL_errors, msv);
1571 message = SvPV(PL_errors, msglen);
1572 SvCUR_set(PL_errors, 0);
1573 }
1574 else
1575 message = SvPV(msv,msglen);
1576
bf49b057 1577 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%lx %s",
5a844595
GS
1578 (unsigned long) thr, message));
1579
3280af22 1580 if (PL_diehook) {
cea2e8a9 1581 /* sv_2cv might call Perl_croak() */
3280af22 1582 SV *olddiehook = PL_diehook;
1738f5c4 1583 ENTER;
3280af22
NIS
1584 SAVESPTR(PL_diehook);
1585 PL_diehook = Nullsv;
20cec16a 1586 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1587 LEAVE;
1588 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1589 dSP;
774d564b
PP
1590 SV *msg;
1591
1592 ENTER;
06bf62c7 1593 msg = newSVpvn(message, msglen);
774d564b
PP
1594 SvREADONLY_on(msg);
1595 SAVEFREESV(msg);
20cec16a 1596
e788e7d3 1597 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1598 PUSHMARK(SP);
1738f5c4 1599 XPUSHs(msg);
20cec16a 1600 PUTBACK;
864dbfa3 1601 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1602 POPSTACK;
774d564b 1603 LEAVE;
20cec16a 1604 }
748a9306 1605 }
3280af22 1606 if (PL_in_eval) {
06bf62c7 1607 PL_restartop = die_where(message, msglen);
6224f72b 1608 JMPENV_JUMP(3);
a0d0e21e 1609 }
d175a3f0
GS
1610 {
1611#ifdef USE_SFIO
1612 /* SFIO can really mess with your errno */
1613 int e = errno;
1614#endif
bf49b057
GS
1615 PerlIO *serr = Perl_error_log;
1616
1617 PerlIO_write(serr, message, msglen);
1618 (void)PerlIO_flush(serr);
d175a3f0
GS
1619#ifdef USE_SFIO
1620 errno = e;
1621#endif
1622 }
f86702cc 1623 my_failure_exit();
a687059c
LW
1624}
1625
c5be433b 1626#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1627void
cea2e8a9 1628Perl_croak_nocontext(const char *pat, ...)
a687059c 1629{
cea2e8a9 1630 dTHX;
a687059c 1631 va_list args;
cea2e8a9 1632 va_start(args, pat);
c5be433b 1633 vcroak(pat, &args);
cea2e8a9
GS
1634 /* NOTREACHED */
1635 va_end(args);
1636}
1637#endif /* PERL_IMPLICIT_CONTEXT */
1638
1639void
1640Perl_croak(pTHX_ const char *pat, ...)
1641{
1642 va_list args;
1643 va_start(args, pat);
c5be433b 1644 vcroak(pat, &args);
cea2e8a9
GS
1645 /* NOTREACHED */
1646 va_end(args);
1647}
1648
c5be433b
GS
1649void
1650Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1651{
de3bb511 1652 char *message;
748a9306
LW
1653 HV *stash;
1654 GV *gv;
1655 CV *cv;
06bf62c7
GS
1656 SV *msv;
1657 STRLEN msglen;
a687059c 1658
5a844595 1659 msv = vmess(pat, args);
06bf62c7 1660 message = SvPV(msv, msglen);
a687059c 1661
3280af22 1662 if (PL_warnhook) {
cea2e8a9 1663 /* sv_2cv might call Perl_warn() */
11343788 1664 dTHR;
3280af22 1665 SV *oldwarnhook = PL_warnhook;
1738f5c4 1666 ENTER;
3280af22
NIS
1667 SAVESPTR(PL_warnhook);
1668 PL_warnhook = Nullsv;
20cec16a 1669 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1670 LEAVE;
1671 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1672 dSP;
774d564b
PP
1673 SV *msg;
1674
1675 ENTER;
06bf62c7 1676 msg = newSVpvn(message, msglen);
774d564b
PP
1677 SvREADONLY_on(msg);
1678 SAVEFREESV(msg);
1679
e788e7d3 1680 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1681 PUSHMARK(SP);
774d564b 1682 XPUSHs(msg);
20cec16a 1683 PUTBACK;
864dbfa3 1684 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1685 POPSTACK;
774d564b 1686 LEAVE;
20cec16a
PP
1687 return;
1688 }
748a9306 1689 }
bf49b057
GS
1690 {
1691 PerlIO *serr = Perl_error_log;
1692
1693 PerlIO_write(serr, message, msglen);
a687059c 1694#ifdef LEAKTEST
bf49b057
GS
1695 DEBUG_L(*message == '!'
1696 ? (xstat(message[1]=='!'
1697 ? (message[2]=='!' ? 2 : 1)
1698 : 0)
1699 , 0)
1700 : 0);
a687059c 1701#endif
bf49b057
GS
1702 (void)PerlIO_flush(serr);
1703 }
a687059c 1704}
8d063cd8 1705
c5be433b 1706#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1707void
1708Perl_warn_nocontext(const char *pat, ...)
1709{
1710 dTHX;
1711 va_list args;
1712 va_start(args, pat);
c5be433b 1713 vwarn(pat, &args);
cea2e8a9
GS
1714 va_end(args);
1715}
1716#endif /* PERL_IMPLICIT_CONTEXT */
1717
1718void
1719Perl_warn(pTHX_ const char *pat, ...)
1720{
1721 va_list args;
1722 va_start(args, pat);
c5be433b 1723 vwarn(pat, &args);
cea2e8a9
GS
1724 va_end(args);
1725}
1726
c5be433b
GS
1727#if defined(PERL_IMPLICIT_CONTEXT)
1728void
1729Perl_warner_nocontext(U32 err, const char *pat, ...)
1730{
1731 dTHX;
1732 va_list args;
1733 va_start(args, pat);
1734 vwarner(err, pat, &args);
1735 va_end(args);
1736}
1737#endif /* PERL_IMPLICIT_CONTEXT */
1738
599cee73 1739void
864dbfa3 1740Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1741{
1742 va_list args;
c5be433b
GS
1743 va_start(args, pat);
1744 vwarner(err, pat, &args);
1745 va_end(args);
1746}
1747
1748void
1749Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1750{
1751 dTHR;
599cee73
PM
1752 char *message;
1753 HV *stash;
1754 GV *gv;
1755 CV *cv;
06bf62c7
GS
1756 SV *msv;
1757 STRLEN msglen;
599cee73 1758
5a844595 1759 msv = vmess(pat, args);
06bf62c7 1760 message = SvPV(msv, msglen);
599cee73
PM
1761
1762 if (ckDEAD(err)) {
1763#ifdef USE_THREADS
bf49b057 1764 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1765#endif /* USE_THREADS */
1766 if (PL_diehook) {
cea2e8a9 1767 /* sv_2cv might call Perl_croak() */
599cee73
PM
1768 SV *olddiehook = PL_diehook;
1769 ENTER;
1770 SAVESPTR(PL_diehook);
1771 PL_diehook = Nullsv;
1772 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1773 LEAVE;
1774 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1775 dSP;
1776 SV *msg;
1777
1778 ENTER;
06bf62c7 1779 msg = newSVpvn(message, msglen);
599cee73
PM
1780 SvREADONLY_on(msg);
1781 SAVEFREESV(msg);
1782
1783 PUSHMARK(sp);
1784 XPUSHs(msg);
1785 PUTBACK;
864dbfa3 1786 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1787
1788 LEAVE;
1789 }
1790 }
1791 if (PL_in_eval) {
06bf62c7 1792 PL_restartop = die_where(message, msglen);
599cee73
PM
1793 JMPENV_JUMP(3);
1794 }
bf49b057
GS
1795 {
1796 PerlIO *serr = Perl_error_log;
1797 PerlIO_write(serr, message, msglen);
1798 (void)PerlIO_flush(serr);
1799 }
599cee73
PM
1800 my_failure_exit();
1801
1802 }
1803 else {
1804 if (PL_warnhook) {
cea2e8a9 1805 /* sv_2cv might call Perl_warn() */
599cee73
PM
1806 dTHR;
1807 SV *oldwarnhook = PL_warnhook;
1808 ENTER;
1809 SAVESPTR(PL_warnhook);
1810 PL_warnhook = Nullsv;
1811 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1812 LEAVE;
1813 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1814 dSP;
1815 SV *msg;
1816
1817 ENTER;
06bf62c7 1818 msg = newSVpvn(message, msglen);
599cee73
PM
1819 SvREADONLY_on(msg);
1820 SAVEFREESV(msg);
1821
1822 PUSHMARK(sp);
1823 XPUSHs(msg);
1824 PUTBACK;
864dbfa3 1825 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1826
1827 LEAVE;
1828 return;
1829 }
1830 }
bf49b057
GS
1831 {
1832 PerlIO *serr = Perl_error_log;
1833 PerlIO_write(serr, message, msglen);
599cee73 1834#ifdef LEAKTEST
bf49b057 1835 DEBUG_L(xstat());
599cee73 1836#endif
bf49b057
GS
1837 (void)PerlIO_flush(serr);
1838 }
599cee73
PM
1839 }
1840}
1841
a0d0e21e 1842#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1843#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1844void
864dbfa3 1845Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1846{
f2517201
GS
1847#ifndef PERL_USE_SAFE_PUTENV
1848 /* most putenv()s leak, so we manipulate environ directly */
79072805 1849 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1850
3280af22 1851 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1852 I32 j;
1853 I32 max;
fe14fcc3
LW
1854 char **tmpenv;
1855
de3bb511 1856 /*SUPPRESS 530*/
fe14fcc3 1857 for (max = i; environ[max]; max++) ;
f2517201
GS
1858 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1859 for (j=0; j<max; j++) { /* copy environment */
1860 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1861 strcpy(tmpenv[j], environ[j]);
1862 }
fe14fcc3
LW
1863 tmpenv[max] = Nullch;
1864 environ = tmpenv; /* tell exec where it is now */
1865 }
a687059c 1866 if (!val) {
f2517201 1867 safesysfree(environ[i]);
a687059c
LW
1868 while (environ[i]) {
1869 environ[i] = environ[i+1];
1870 i++;
1871 }
1872 return;
1873 }
8d063cd8 1874 if (!environ[i]) { /* does not exist yet */
f2517201 1875 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1876 environ[i+1] = Nullch; /* make sure it's null terminated */
1877 }
fe14fcc3 1878 else
f2517201
GS
1879 safesysfree(environ[i]);
1880 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1881
a687059c 1882 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1883
1884#else /* PERL_USE_SAFE_PUTENV */
1885 char *new_env;
1886
1887 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1888 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1889 (void)putenv(new_env);
1890#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1891}
1892
2c2d71f5
JH
1893#else /* WIN32 || CYGWIN */
1894#if defined(CYGWIN)
1cab015a
FE
1895/*
1896 * Save environ of perl.exe, currently Cygwin links in separate environ's
1897 * for each exe/dll. Probably should be a member of impure_ptr.
1898 */
1899static char ***Perl_main_environ;
1900
1901EXTERN_C void
1902Perl_my_setenv_init(char ***penviron)
1903{
1904 Perl_main_environ = penviron;
1905}
1906
1907void
1908my_setenv(char *nam, char *val)
1909{
1910 /* You can not directly manipulate the environ[] array because
1911 * the routines do some additional work that syncs the Cygwin
1912 * environment with the Windows environment.
1913 */
1914 char *oldstr = environ[setenv_getix(nam)];
1915
1916 if (!val) {
1917 if (!oldstr)
1918 return;
1919 unsetenv(nam);
1920 Safefree(oldstr);
1921 return;
1922 }
1923 setenv(nam, val, 1);
1924 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1925 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1926 Safefree(oldstr);
1927}
3e3baf6d 1928#else /* if WIN32 */
68dc0745
PP
1929
1930void
864dbfa3 1931Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1932{
3e3baf6d
TB
1933
1934#ifdef USE_WIN32_RTL_ENV
1935
68dc0745
PP
1936 register char *envstr;
1937 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1938 STRLEN vallen;
1939 char *oldstr = environ[setenv_getix(nam)];
1940
1941 /* putenv() has totally broken semantics in both the Borland
1942 * and Microsoft CRTLs. They either store the passed pointer in
1943 * the environment without making a copy, or make a copy and don't
1944 * free it. And on top of that, they dont free() old entries that
1945 * are being replaced/deleted. This means the caller must
1946 * free any old entries somehow, or we end up with a memory
1947 * leak every time my_setenv() is called. One might think
1948 * one could directly manipulate environ[], like the UNIX code
1949 * above, but direct changes to environ are not allowed when
1950 * calling putenv(), since the RTLs maintain an internal
1951 * *copy* of environ[]. Bad, bad, *bad* stink.
1952 * GSAR 97-06-07
1953 */
68dc0745 1954
3e3baf6d
TB
1955 if (!val) {
1956 if (!oldstr)
1957 return;
1958 val = "";
1959 vallen = 0;
1960 }
1961 else
1962 vallen = strlen(val);
f2517201 1963 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1964 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1965 (void)PerlEnv_putenv(envstr);
3e3baf6d 1966 if (oldstr)
f2517201 1967 safesysfree(oldstr);
3e3baf6d 1968#ifdef _MSC_VER
f2517201 1969 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1970#endif
1971
1972#else /* !USE_WIN32_RTL_ENV */
1973
ac5c734f
GS
1974 register char *envstr;
1975 STRLEN len = strlen(nam) + 3;
1976 if (!val) {
1977 val = "";
1978 }
1979 len += strlen(val);
1980 New(904, envstr, len, char);
1981 (void)sprintf(envstr,"%s=%s",nam,val);
1982 (void)PerlEnv_putenv(envstr);
1983 Safefree(envstr);
3e3baf6d
TB
1984
1985#endif
1986}
1987
1988#endif /* WIN32 */
1cab015a 1989#endif
3e3baf6d
TB
1990
1991I32
864dbfa3 1992Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
1993{
1994 register I32 i, len = strlen(nam);
1995
1996 for (i = 0; environ[i]; i++) {
1997 if (
1998#ifdef WIN32
1999 strnicmp(environ[i],nam,len) == 0
2000#else
2001 strnEQ(environ[i],nam,len)
2002#endif
2003 && environ[i][len] == '=')
2004 break; /* strnEQ must come first to avoid */
2005 } /* potential SEGV's */
2006 return i;
68dc0745
PP
2007}
2008
a0d0e21e 2009#endif /* !VMS */
378cc40b 2010
16d20bd9 2011#ifdef UNLINK_ALL_VERSIONS
79072805 2012I32
864dbfa3 2013Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2014{
79072805 2015 I32 i;
378cc40b 2016
6ad3d225 2017 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
2018 return i ? 0 : -1;
2019}
2020#endif
2021
85e6fe83 2022#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2023char *
864dbfa3 2024Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW
2025{
2026 char *retval = to;
2027
7c0587c8
LW
2028 if (from - to >= 0) {
2029 while (len--)
2030 *to++ = *from++;
2031 }
2032 else {
2033 to += len;
2034 from += len;
2035 while (len--)
faf8582f 2036 *(--to) = *(--from);
7c0587c8 2037 }
378cc40b
LW
2038 return retval;
2039}
ffed7fef 2040#endif
378cc40b 2041
fc36a67e
PP
2042#ifndef HAS_MEMSET
2043void *
864dbfa3 2044Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
2045{
2046 char *retval = loc;
2047
2048 while (len--)
2049 *loc++ = ch;
2050 return retval;
2051}
2052#endif
2053
7c0587c8 2054#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2055char *
864dbfa3 2056Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW
2057{
2058 char *retval = loc;
2059
2060 while (len--)
2061 *loc++ = 0;
2062 return retval;
2063}
2064#endif
7c0587c8 2065
36477c24 2066#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2067I32
864dbfa3 2068Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2069{
36477c24
PP
2070 register U8 *a = (U8 *)s1;
2071 register U8 *b = (U8 *)s2;
79072805 2072 register I32 tmp;
7c0587c8
LW
2073
2074 while (len--) {
36477c24 2075 if (tmp = *a++ - *b++)
7c0587c8
LW
2076 return tmp;
2077 }
2078 return 0;
2079}
36477c24 2080#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2081
fe14fcc3 2082#ifndef HAS_VPRINTF
a687059c 2083
85e6fe83 2084#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2085char *
2086#else
2087int
2088#endif
08105a92 2089vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2090{
2091 FILE fakebuf;
2092
2093 fakebuf._ptr = dest;
2094 fakebuf._cnt = 32767;
35c8bce7
LW
2095#ifndef _IOSTRG
2096#define _IOSTRG 0
2097#endif
a687059c
LW
2098 fakebuf._flag = _IOWRT|_IOSTRG;
2099 _doprnt(pat, args, &fakebuf); /* what a kludge */
2100 (void)putc('\0', &fakebuf);
85e6fe83 2101#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2102 return(dest);
2103#else
2104 return 0; /* perl doesn't use return value */
2105#endif
2106}
2107
fe14fcc3 2108#endif /* HAS_VPRINTF */
a687059c
LW
2109
2110#ifdef MYSWAP
ffed7fef 2111#if BYTEORDER != 0x4321
a687059c 2112short
864dbfa3 2113Perl_my_swap(pTHX_ short s)
a687059c
LW
2114{
2115#if (BYTEORDER & 1) == 0
2116 short result;
2117
2118 result = ((s & 255) << 8) + ((s >> 8) & 255);
2119 return result;
2120#else
2121 return s;
2122#endif
2123}
2124
2125long
864dbfa3 2126Perl_my_htonl(pTHX_ long l)
a687059c
LW
2127{
2128 union {
2129 long result;
ffed7fef 2130 char c[sizeof(long)];
a687059c
LW
2131 } u;
2132
ffed7fef 2133#if BYTEORDER == 0x1234
a687059c
LW
2134 u.c[0] = (l >> 24) & 255;
2135 u.c[1] = (l >> 16) & 255;
2136 u.c[2] = (l >> 8) & 255;
2137 u.c[3] = l & 255;
2138 return u.result;
2139#else
ffed7fef 2140#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2141 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2142#else
79072805
LW
2143 register I32 o;
2144 register I32 s;
a687059c 2145
ffed7fef
LW
2146 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2147 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2148 }
2149 return u.result;
2150#endif
2151#endif
2152}
2153
2154long
864dbfa3 2155Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2156{
2157 union {
2158 long l;
ffed7fef 2159 char c[sizeof(long)];
a687059c
LW
2160 } u;
2161
ffed7fef 2162#if BYTEORDER == 0x1234
a687059c
LW
2163 u.c[0] = (l >> 24) & 255;
2164 u.c[1] = (l >> 16) & 255;
2165 u.c[2] = (l >> 8) & 255;
2166 u.c[3] = l & 255;
2167 return u.l;
2168#else
ffed7fef 2169#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2170 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2171#else
79072805
LW
2172 register I32 o;
2173 register I32 s;
a687059c
LW
2174
2175 u.l = l;
2176 l = 0;
ffed7fef
LW
2177 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2178 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2179 }
2180 return l;
2181#endif
2182#endif
2183}
2184
ffed7fef 2185#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2186#endif /* MYSWAP */
2187
2188/*
2189 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2190 * If these functions are defined,
2191 * the BYTEORDER is neither 0x1234 nor 0x4321.
2192 * However, this is not assumed.
2193 * -DWS
2194 */
2195
2196#define HTOV(name,type) \
2197 type \
ba106d47 2198 name (register type n) \
988174c1
LW
2199 { \
2200 union { \
2201 type value; \
2202 char c[sizeof(type)]; \
2203 } u; \
79072805
LW
2204 register I32 i; \
2205 register I32 s; \
988174c1
LW
2206 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2207 u.c[i] = (n >> s) & 0xFF; \
2208 } \
2209 return u.value; \
2210 }
2211
2212#define VTOH(name,type) \
2213 type \
ba106d47 2214 name (register type n) \
988174c1
LW
2215 { \
2216 union { \
2217 type value; \
2218 char c[sizeof(type)]; \
2219 } u; \
79072805
LW
2220 register I32 i; \
2221 register I32 s; \
988174c1
LW
2222 u.value = n; \
2223 n = 0; \
2224 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2225 n += (u.c[i] & 0xFF) << s; \
2226 } \
2227 return n; \
2228 }
2229
2230#if defined(HAS_HTOVS) && !defined(htovs)
2231HTOV(htovs,short)
2232#endif
2233#if defined(HAS_HTOVL) && !defined(htovl)
2234HTOV(htovl,long)
2235#endif
2236#if defined(HAS_VTOHS) && !defined(vtohs)
2237VTOH(vtohs,short)
2238#endif
2239#if defined(HAS_VTOHL) && !defined(vtohl)
2240VTOH(vtohl,long)
2241#endif
a687059c 2242
5f05dabc 2243 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2244#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2245PerlIO *
864dbfa3 2246Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2247{
2248 int p[2];
8ac85365 2249 register I32 This, that;
d8a83dd3 2250 register Pid_t pid;
79072805 2251 SV *sv;
1738f5c4 2252 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2253 I32 did_pipes = 0;
2254 int pp[2];
a687059c 2255
45bc9206 2256 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2257#ifdef OS2
2258 if (doexec) {
2259 return my_syspopen(cmd,mode);
2260 }
2261#endif
8ac85365
NIS
2262 This = (*mode == 'w');
2263 that = !This;
3280af22 2264 if (doexec && PL_tainting) {
bbce6d69
PP
2265 taint_env();
2266 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2267 }
c2267164
IZ
2268 if (PerlProc_pipe(p) < 0)
2269 return Nullfp;
e446cec8
IZ
2270 if (doexec && PerlProc_pipe(pp) >= 0)
2271 did_pipes = 1;
a687059c
LW
2272 while ((pid = (doexec?vfork():fork())) < 0) {
2273 if (errno != EAGAIN) {
6ad3d225 2274 PerlLIO_close(p[This]);
e446cec8
IZ
2275 if (did_pipes) {
2276 PerlLIO_close(pp[0]);
2277 PerlLIO_close(pp[1]);
2278 }
a687059c 2279 if (!doexec)
cea2e8a9 2280 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2281 return Nullfp;
2282 }
2283 sleep(5);
2284 }
2285 if (pid == 0) {
79072805
LW
2286 GV* tmpgv;
2287
30ac6d9b
GS
2288#undef THIS
2289#undef THAT
a687059c 2290#define THIS that
8ac85365 2291#define THAT This
6ad3d225 2292 PerlLIO_close(p[THAT]);
e446cec8
IZ
2293 if (did_pipes) {
2294 PerlLIO_close(pp[0]);
2295#if defined(HAS_FCNTL) && defined(F_SETFD)
2296 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2297#endif
2298 }
a687059c 2299 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2300 PerlLIO_dup2(p[THIS], *mode == 'r');
2301 PerlLIO_close(p[THIS]);
a687059c 2302 }
4435c477 2303#ifndef OS2
a687059c 2304 if (doexec) {
a0d0e21e 2305#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2306 int fd;
2307
2308#ifndef NOFILE
2309#define NOFILE 20
2310#endif
6b88bc9c 2311 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2312 if (fd != pp[1])
2313 PerlLIO_close(fd);
ae986130 2314#endif
e446cec8 2315 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2316 PerlProc__exit(1);
a687059c 2317 }
4435c477 2318#endif /* defined OS2 */
de3bb511 2319 /*SUPPRESS 560*/
85e6fe83 2320 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2321 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS
2322 PL_forkprocess = 0;
2323 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2324 return Nullfp;
2325#undef THIS
2326#undef THAT
2327 }
62b28dd9 2328 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2329 PerlLIO_close(p[that]);
e446cec8
IZ
2330 if (did_pipes)
2331 PerlLIO_close(pp[1]);
8ac85365 2332 if (p[that] < p[This]) {
6ad3d225
GS
2333 PerlLIO_dup2(p[This], p[that]);
2334 PerlLIO_close(p[This]);
8ac85365 2335 p[This] = p[that];
62b28dd9 2336 }
3280af22 2337 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2338 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2339 SvIVX(sv) = pid;
3280af22 2340 PL_forkprocess = pid;
e446cec8
IZ
2341 if (did_pipes && pid > 0) {
2342 int errkid;
2343 int n = 0, n1;
2344
2345 while (n < sizeof(int)) {
2346 n1 = PerlLIO_read(pp[0],
2347 (void*)(((char*)&errkid)+n),
2348 (sizeof(int)) - n);
2349 if (n1 <= 0)
2350 break;
2351 n += n1;
2352 }
2f96c702
IZ
2353 PerlLIO_close(pp[0]);
2354 did_pipes = 0;
e446cec8
IZ
2355 if (n) { /* Error */
2356 if (n != sizeof(int))
cea2e8a9 2357 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2358 errno = errkid; /* Propagate errno from kid */
2359 return Nullfp;
2360 }
2361 }
2362 if (did_pipes)
2363 PerlLIO_close(pp[0]);
8ac85365 2364 return PerlIO_fdopen(p[This], mode);
a687059c 2365}
7c0587c8 2366#else
55497cff 2367#if defined(atarist) || defined(DJGPP)
7c0587c8 2368FILE *popen();
760ac839 2369PerlIO *
864dbfa3 2370Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2371{
760ac839 2372 /* Needs work for PerlIO ! */
55497cff 2373 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2374 PERL_FLUSHALL_FOR_CHILD;
55497cff 2375 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2376}
2377#endif
2378
2379#endif /* !DOSISH */
a687059c 2380
748a9306 2381#ifdef DUMP_FDS
35ff7856 2382void
864dbfa3 2383Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2384{
2385 int fd;
2386 struct stat tmpstatbuf;
2387
bf49b057 2388 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2389 for (fd = 0; fd < 32; fd++) {
6ad3d225 2390 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2391 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2392 }
bf49b057 2393 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2394}
35ff7856 2395#endif /* DUMP_FDS */
ae986130 2396
fe14fcc3 2397#ifndef HAS_DUP2
fec02dd3 2398int
ba106d47 2399dup2(int oldfd, int newfd)
a687059c 2400{
a0d0e21e 2401#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2402 if (oldfd == newfd)
2403 return oldfd;
6ad3d225 2404 PerlLIO_close(newfd);
fec02dd3 2405 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2406#else
fc36a67e
PP
2407#define DUP2_MAX_FDS 256
2408 int fdtmp[DUP2_MAX_FDS];
79072805 2409 I32 fdx = 0;
ae986130
LW
2410 int fd;
2411
fe14fcc3 2412 if (oldfd == newfd)
fec02dd3 2413 return oldfd;
6ad3d225 2414 PerlLIO_close(newfd);
fc36a67e 2415 /* good enough for low fd's... */
6ad3d225 2416 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2417 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2418 PerlLIO_close(fd);
fc36a67e
PP
2419 fd = -1;
2420 break;
2421 }
ae986130 2422 fdtmp[fdx++] = fd;
fc36a67e 2423 }
ae986130 2424 while (fdx > 0)
6ad3d225 2425 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2426 return fd;
62b28dd9 2427#endif
a687059c
LW
2428}
2429#endif
2430
ff68c719
PP
2431
2432#ifdef HAS_SIGACTION
2433
2434Sighandler_t
864dbfa3 2435Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2436{
2437 struct sigaction act, oact;
2438
2439 act.sa_handler = handler;
2440 sigemptyset(&act.sa_mask);
2441 act.sa_flags = 0;
2442#ifdef SA_RESTART
2443 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2444#endif
85264bed
CS
2445#ifdef SA_NOCLDWAIT
2446 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2447 act.sa_flags |= SA_NOCLDWAIT;
2448#endif
ff68c719 2449 if (sigaction(signo, &act, &oact) == -1)
36477c24 2450 return SIG_ERR;
ff68c719 2451 else
36477c24 2452 return oact.sa_handler;
ff68c719
PP
2453}
2454
2455Sighandler_t
864dbfa3 2456Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2457{
2458 struct sigaction oact;
2459
2460 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2461 return SIG_ERR;
2462 else
2463 return oact.sa_handler;
2464}
2465
2466int
864dbfa3 2467Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2468{
2469 struct sigaction act;
2470
2471 act.sa_handler = handler;
2472 sigemptyset(&act.sa_mask);
2473 act.sa_flags = 0;
2474#ifdef SA_RESTART
2475 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2476#endif
85264bed
CS
2477#ifdef SA_NOCLDWAIT
2478 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2479 act.sa_flags |= SA_NOCLDWAIT;
2480#endif
ff68c719
PP
2481 return sigaction(signo, &act, save);
2482}
2483
2484int
864dbfa3 2485Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2486{
2487 return sigaction(signo, save, (struct sigaction *)NULL);
2488}
2489
2490#else /* !HAS_SIGACTION */
2491
2492Sighandler_t
864dbfa3 2493Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2494{
6ad3d225 2495 return PerlProc_signal(signo, handler);
ff68c719
PP
2496}
2497
2498static int sig_trapped;
2499
2500static
2501Signal_t
4e35701f 2502sig_trap(int signo)
ff68c719
PP
2503{
2504 sig_trapped++;
2505}
2506
2507Sighandler_t
864dbfa3 2508Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2509{
2510 Sighandler_t oldsig;
2511
2512 sig_trapped = 0;
6ad3d225
GS
2513 oldsig = PerlProc_signal(signo, sig_trap);
2514 PerlProc_signal(signo, oldsig);
ff68c719 2515 if (sig_trapped)
6ad3d225 2516 PerlProc_kill(getpid(), signo);
ff68c719
PP
2517 return oldsig;
2518}
2519
2520int
864dbfa3 2521Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2522{
6ad3d225 2523 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2524 return (*save == SIG_ERR) ? -1 : 0;
2525}
2526
2527int
864dbfa3 2528Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2529{
6ad3d225 2530 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2531}
2532
2533#endif /* !HAS_SIGACTION */
2534
5f05dabc 2535 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2536#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2537I32
864dbfa3 2538Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2539{
ff68c719 2540 Sigsave_t hstat, istat, qstat;
a687059c 2541 int status;
a0d0e21e 2542 SV **svp;
d8a83dd3
JH
2543 Pid_t pid;
2544 Pid_t pid2;
03136e13
CS
2545 bool close_failed;
2546 int saved_errno;
2547#ifdef VMS
2548 int saved_vaxc_errno;
2549#endif
22fae026
TM
2550#ifdef WIN32
2551 int saved_win32_errno;
2552#endif
a687059c 2553
3280af22 2554 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2555 pid = SvIVX(*svp);
a0d0e21e 2556 SvREFCNT_dec(*svp);
3280af22 2557 *svp = &PL_sv_undef;
ddcf38b7
IZ
2558#ifdef OS2
2559 if (pid == -1) { /* Opened by popen. */
2560 return my_syspclose(ptr);
2561 }
2562#endif
03136e13
CS
2563 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2564 saved_errno = errno;
2565#ifdef VMS
2566 saved_vaxc_errno = vaxc$errno;
2567#endif
22fae026
TM
2568#ifdef WIN32
2569 saved_win32_errno = GetLastError();
2570#endif
03136e13 2571 }
7c0587c8 2572#ifdef UTS
6ad3d225 2573 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2574#endif
ff68c719
PP
2575 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2576 rsignal_save(SIGINT, SIG_IGN, &istat);
2577 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2578 do {
1d3434b8
GS
2579 pid2 = wait4pid(pid, &status, 0);
2580 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2581 rsignal_restore(SIGHUP, &hstat);
2582 rsignal_restore(SIGINT, &istat);
2583 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2584 if (close_failed) {
2585 SETERRNO(saved_errno, saved_vaxc_errno);
2586 return -1;
2587 }
1d3434b8 2588 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2589}
4633a7c4
LW
2590#endif /* !DOSISH */
2591
2c2d71f5 2592#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2593I32
d8a83dd3 2594Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2595{
79072805
LW
2596 SV *sv;
2597 SV** svp;
fc36a67e 2598 char spid[TYPE_CHARS(int)];
20188a90
LW
2599
2600 if (!pid)
2601 return -1;
20188a90
LW
2602 if (pid > 0) {
2603 sprintf(spid, "%d", pid);
3280af22
NIS
2604 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2605 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2606 *statusp = SvIVX(*svp);
3280af22 2607 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2608 return pid;
2609 }
2610 }
2611 else {
79072805 2612 HE *entry;
20188a90 2613
3280af22
NIS
2614 hv_iterinit(PL_pidstatus);
2615 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2616 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2617 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2618 *statusp = SvIVX(sv);
20188a90 2619 sprintf(spid, "%d", pid);
3280af22 2620 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2621 return pid;
2622 }
2623 }
79072805 2624#ifdef HAS_WAITPID
367f3c24
IZ
2625# ifdef HAS_WAITPID_RUNTIME
2626 if (!HAS_WAITPID_RUNTIME)
2627 goto hard_way;
2628# endif
f55ee38a 2629 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2630#endif
2631#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2632 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2633#endif
2634#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2635 hard_way:
a0d0e21e
LW
2636 {
2637 I32 result;
2638 if (flags)
cea2e8a9 2639 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2640 else {
76e3520e 2641 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2642 pidgone(result,*statusp);
2643 if (result < 0)
2644 *statusp = -1;
2645 }
2646 return result;
a687059c
LW
2647 }
2648#endif
a687059c 2649}
2d7a9237 2650#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2651
7c0587c8 2652void
de3bb511 2653/*SUPPRESS 590*/
d8a83dd3 2654Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2655{
79072805 2656 register SV *sv;
fc36a67e 2657 char spid[TYPE_CHARS(int)];
a687059c 2658
20188a90 2659 sprintf(spid, "%d", pid);
3280af22 2660 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2661 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2662 SvIVX(sv) = status;
20188a90 2663 return;
a687059c
LW
2664}
2665
55497cff 2666#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2667int pclose();
ddcf38b7
IZ
2668#ifdef HAS_FORK
2669int /* Cannot prototype with I32
2670 in os2ish.h. */
ba106d47 2671my_syspclose(PerlIO *ptr)
ddcf38b7 2672#else
79072805 2673I32
864dbfa3 2674Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2675#endif
a687059c 2676{
760ac839
LW
2677 /* Needs work for PerlIO ! */
2678 FILE *f = PerlIO_findFILE(ptr);
2679 I32 result = pclose(f);
933fea7f
GS
2680#if defined(DJGPP)
2681 result = (result << 8) & 0xff00;
2682#endif
760ac839
LW
2683 PerlIO_releaseFILE(ptr,f);
2684 return result;
a687059c 2685}
7c0587c8 2686#endif
9f68db38
LW
2687
2688void
864dbfa3 2689Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2690{
79072805 2691 register I32 todo;
08105a92 2692 register const char *frombase = from;
9f68db38
LW
2693
2694 if (len == 1) {
08105a92 2695 register const char c = *from;
9f68db38 2696 while (count-- > 0)
5926133d 2697 *to++ = c;
9f68db38
LW
2698 return;
2699 }
2700 while (count-- > 0) {
2701 for (todo = len; todo > 0; todo--) {
2702 *to++ = *from++;
2703 }
2704 from = frombase;
2705 }
2706}
0f85fab0 2707
463ee0b2 2708U32
65202027 2709Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2710{
2711 long along;
2712
27e2fb84 2713#if CASTFLAGS & 2
34de22dd
LW
2714# define BIGDOUBLE 2147483648.0
2715 if (f >= BIGDOUBLE)
2716 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2717#endif
0f85fab0
LW
2718 if (f >= 0.0)
2719 return (unsigned long)f;
2720 along = (long)f;
2721 return (unsigned long)along;
2722}
ed6116ce 2723# undef BIGDOUBLE
5d94fbed 2724
5d94fbed
AD
2725/* Unfortunately, on some systems the cast_uv() function doesn't
2726 work with the system-supplied definition of ULONG_MAX. The
2727 comparison (f >= ULONG_MAX) always comes out true. It must be a
2728 problem with the compiler constant folding.
2729
2730 In any case, this workaround should be fine on any two's complement
2731 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2732 ccflags.
2733 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2734*/
1eb770ff
PP
2735
2736/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2737 of LONG_(MIN/MAX).
2738 -- Kenneth Albanowski <kjahds@kjahds.com>
2739*/
2740
20cec16a
PP
2741#ifndef MY_UV_MAX
2742# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2743#endif
2744
ed6116ce 2745I32
65202027 2746Perl_cast_i32(pTHX_ NV f)
ed6116ce 2747{
20cec16a
PP
2748 if (f >= I32_MAX)
2749 return (I32) I32_MAX;
2750 if (f <= I32_MIN)
2751 return (I32) I32_MIN;
ed6116ce
LW
2752 return (I32) f;
2753}
a0d0e21e
LW
2754
2755IV
65202027 2756Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2757{
25da4f38
IZ
2758 if (f >= IV_MAX) {
2759 UV uv;
2760
65202027 2761 if (f >= (NV)UV_MAX)
25da4f38
IZ
2762 return (IV) UV_MAX;
2763 uv = (UV) f;
2764 return (IV)uv;
2765 }
20cec16a
PP
2766 if (f <= IV_MIN)
2767 return (IV) IV_MIN;
a0d0e21e
LW
2768 return (IV) f;
2769}
5d94fbed
AD
2770
2771UV
65202027 2772Perl_cast_uv(pTHX_ NV f)
5d94fbed 2773{
20cec16a
PP
2774 if (f >= MY_UV_MAX)
2775 return (UV) MY_UV_MAX;
25da4f38
IZ
2776 if (f < 0) {
2777 IV iv;
2778
2779 if (f < IV_MIN)
2780 return (UV)IV_MIN;
2781 iv = (IV) f;
2782 return (UV) iv;
2783 }
5d94fbed
AD
2784 return (UV) f;
2785}
2786
fe14fcc3 2787#ifndef HAS_RENAME
79072805 2788I32
864dbfa3 2789Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2790{
93a17b20
LW
2791 char *fa = strrchr(a,'/');
2792 char *fb = strrchr(b,'/');
62b28dd9
LW
2793 struct stat tmpstatbuf1;
2794 struct stat tmpstatbuf2;
46fc3d4c 2795 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2796
2797 if (fa)
2798 fa++;
2799 else
2800 fa = a;
2801 if (fb)
2802 fb++;
2803 else
2804 fb = b;
2805 if (strNE(a,b))
2806 return FALSE;
2807 if (fa == a)
46fc3d4c 2808 sv_setpv(tmpsv, ".");
62b28dd9 2809 else
46fc3d4c 2810 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2811 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2812 return FALSE;
2813 if (fb == b)
46fc3d4c 2814 sv_setpv(tmpsv, ".");
62b28dd9 2815 else
46fc3d4c 2816 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2817 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2818 return FALSE;
2819 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2820 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2821}
fe14fcc3
LW
2822#endif /* !HAS_RENAME */
2823
9e24b6e2 2824NV
864dbfa3 2825Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2826{
2827 register char *s = start;
9e24b6e2
JH
2828 register NV rnv = 0.0;
2829 register UV ruv = 0;
252aa082 2830 register bool seenb = FALSE;
9e24b6e2 2831 register bool overflowed = FALSE;
252aa082
JH
2832
2833 for (; len-- && *s; s++) {
2834 if (!(*s == '0' || *s == '1')) {
2835 if (*s == '_')
9e24b6e2 2836 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2837 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
2838 /* Disallow 0bbb0b0bbb... */
2839 seenb = TRUE;
252aa082
JH
2840 continue;
2841 }
2842 else {
2843 dTHR;
627300f0
JH
2844 if (ckWARN(WARN_DIGIT))
2845 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2846 "Illegal binary digit '%c' ignored", *s);
2847 break;
2848 }
9e24b6e2
JH
2849 }
2850 if (!overflowed) {
2851 register UV xuv = ruv << 1;
2852
2853 if ((xuv >> 1) != ruv) {
2854 dTHR;
2855 overflowed = TRUE;
2856 rnv = (NV) ruv;
627300f0
JH
2857 if (ckWARN_d(WARN_OVERFLOW))
2858 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2859 "Integer overflow in binary number");
2860 } else
2861 ruv = xuv | (*s - '0');
2862 }
2863 if (overflowed) {
2864 rnv *= 2;
2865 /* If an NV has not enough bits in its mantissa to
2866 * represent an UV this summing of small low-order numbers
2867 * is a waste of time (because the NV cannot preserve
2868 * the low-order bits anyway): we could just remember when
2869 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2870 * right amount. */
9e24b6e2 2871 rnv += (*s - '0');
f248d071 2872 }
4f19785b 2873 }
9e24b6e2
JH
2874 if (!overflowed)
2875 rnv = (NV) ruv;
893fe2c2 2876 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2877#if UVSIZE > 4
893fe2c2
JH
2878 || (!overflowed && ruv > 0xffffffff )
2879#endif
2880 ) {
252aa082 2881 dTHR;
627300f0
JH
2882 if (ckWARN(WARN_PORTABLE))
2883 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2884 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
2885 }
2886 *retlen = s - start;
9e24b6e2 2887 return rnv;
4f19785b 2888}
9e24b6e2
JH
2889
2890NV
864dbfa3 2891Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2892{
2893 register char *s = start;
9e24b6e2
JH
2894 register NV rnv = 0.0;
2895 register UV ruv = 0;
2896 register bool overflowed = FALSE;
252aa082
JH
2897
2898 for (; len-- && *s; s++) {
2899 if (!(*s >= '0' && *s <= '7')) {
2900 if (*s == '_')
9e24b6e2 2901 continue; /* Note: does not check for __ and the like. */
252aa082 2902 else {
f84f607d
JH
2903 /* Allow \octal to work the DWIM way (that is, stop scanning
2904 * as soon as non-octal characters are seen, complain only iff
2905 * someone seems to want to use the digits eight and nine). */
252aa082
JH
2906 if (*s == '8' || *s == '9') {
2907 dTHR;
627300f0
JH
2908 if (ckWARN(WARN_DIGIT))
2909 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2910 "Illegal octal digit '%c' ignored", *s);
2911 }
2912 break;
2913 }
55497cff 2914 }
9e24b6e2 2915 if (!overflowed) {
893fe2c2 2916 register UV xuv = ruv << 3;
9e24b6e2
JH
2917
2918 if ((xuv >> 3) != ruv) {
2919 dTHR;
2920 overflowed = TRUE;
2921 rnv = (NV) ruv;
627300f0
JH
2922 if (ckWARN_d(WARN_OVERFLOW))
2923 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2924 "Integer overflow in octal number");
2925 } else
2926 ruv = xuv | (*s - '0');
2927 }
2928 if (overflowed) {
2929 rnv *= 8.0;
2930 /* If an NV has not enough bits in its mantissa to
2931 * represent an UV this summing of small low-order numbers
2932 * is a waste of time (because the NV cannot preserve
2933 * the low-order bits anyway): we could just remember when
2934 * did we overflow and in the end just multiply rnv by the
2935 * right amount of 8-tuples. */
2936 rnv += (NV)(*s - '0');
2937 }
fe14fcc3 2938 }
9e24b6e2
JH
2939 if (!overflowed)
2940 rnv = (NV) ruv;
893fe2c2 2941 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2942#if UVSIZE > 4
893fe2c2
JH
2943 || (!overflowed && ruv > 0xffffffff )
2944#endif
2945 ) {
d008e5eb 2946 dTHR;
627300f0
JH
2947 if (ckWARN(WARN_PORTABLE))
2948 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2949 "Octal number > 037777777777 non-portable");
d008e5eb 2950 }
fe14fcc3 2951 *retlen = s - start;
9e24b6e2 2952 return rnv;
fe14fcc3
LW
2953}
2954
9e24b6e2 2955NV
864dbfa3 2956Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2957{
2958 register char *s = start;
9e24b6e2
JH
2959 register NV rnv = 0.0;
2960 register UV ruv = 0;
252aa082 2961 register bool seenx = FALSE;
9e24b6e2 2962 register bool overflowed = FALSE;
9e24b6e2 2963 char *hexdigit;
fe14fcc3 2964
9e24b6e2
JH
2965 for (; len-- && *s; s++) {
2966 hexdigit = strchr((char *) PL_hexdigit, *s);
2967 if (!hexdigit) {
2968 if (*s == '_')
2969 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2970 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH
2971 /* Disallow 0xxx0x0xxx... */
2972 seenx = TRUE;
252aa082
JH
2973 continue;
2974 }
a0ed51b3 2975 else {
d008e5eb 2976 dTHR;
627300f0
JH
2977 if (ckWARN(WARN_DIGIT))
2978 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2979 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
2980 break;
2981 }
2982 }
9e24b6e2
JH
2983 if (!overflowed) {
2984 register UV xuv = ruv << 4;
2985
2986 if ((xuv >> 4) != ruv) {
2987 dTHR;
2988 overflowed = TRUE;
2989 rnv = (NV) ruv;
627300f0
JH
2990 if (ckWARN_d(WARN_OVERFLOW))
2991 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2992 "Integer overflow in hexadecimal number");
2993 } else
2994 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2995 }
2996 if (overflowed) {
2997 rnv *= 16.0;
2998 /* If an NV has not enough bits in its mantissa to
2999 * represent an UV this summing of small low-order numbers
3000 * is a waste of time (because the NV cannot preserve
3001 * the low-order bits anyway): we could just remember when
3002 * did we overflow and in the end just multiply rnv by the
3003 * right amount of 16-tuples. */
3004 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3005 }
6ff81951 3006 }
9e24b6e2
JH
3007 if (!overflowed)
3008 rnv = (NV) ruv;
893fe2c2 3009 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3010#if UVSIZE > 4
893fe2c2
JH
3011 || (!overflowed && ruv > 0xffffffff )
3012#endif
3013 ) {
252aa082 3014 dTHR;
627300f0
JH
3015 if (ckWARN(WARN_PORTABLE))
3016 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
3017 "Hexadecimal number > 0xffffffff non-portable");
3018 }
fe14fcc3 3019 *retlen = s - start;
9e24b6e2 3020 return rnv;
fe14fcc3 3021}
760ac839 3022
491527d0 3023char*
864dbfa3 3024Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
3025{
3026 dTHR;
3027 char *xfound = Nullch;
3028 char *xfailed = Nullch;
0f31cffe 3029 char tmpbuf[MAXPATHLEN];
491527d0
GS
3030 register char *s;
3031 I32 len;
3032 int retval;
3033#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3034# define SEARCH_EXTS ".bat", ".cmd", NULL
3035# define MAX_EXT_LEN 4
3036#endif
3037#ifdef OS2
3038# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3039# define MAX_EXT_LEN 4
3040#endif
3041#ifdef VMS
3042# define SEARCH_EXTS ".pl", ".com", NULL
3043# define MAX_EXT_LEN 4
3044#endif
3045 /* additional extensions to try in each dir if scriptname not found */
3046#ifdef SEARCH_EXTS
3047 char *exts[] = { SEARCH_EXTS };
3048 char **ext = search_ext ? search_ext : exts;
3049 int extidx = 0, i = 0;
3050 char *curext = Nullch;
3051#else
3052# define MAX_EXT_LEN 0
3053#endif
3054
3055 /*
3056 * If dosearch is true and if scriptname does not contain path
3057 * delimiters, search the PATH for scriptname.
3058 *
3059 * If SEARCH_EXTS is also defined, will look for each
3060 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3061 * while searching the PATH.
3062 *
3063 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3064 * proceeds as follows:
3065 * If DOSISH or VMSISH:
3066 * + look for ./scriptname{,.foo,.bar}
3067 * + search the PATH for scriptname{,.foo,.bar}
3068 *
3069 * If !DOSISH:
3070 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3071 * this will not look in '.' if it's not in the PATH)
3072 */
84486fc6 3073 tmpbuf[0] = '\0';
491527d0
GS
3074
3075#ifdef VMS
3076# ifdef ALWAYS_DEFTYPES
3077 len = strlen(scriptname);
3078 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3079 int hasdir, idx = 0, deftypes = 1;
3080 bool seen_dot = 1;
3081
3082 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3083# else
3084 if (dosearch) {
3085 int hasdir, idx = 0, deftypes = 1;
3086 bool seen_dot = 1;
3087
3088 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3089# endif
3090 /* The first time through, just add SEARCH_EXTS to whatever we
3091 * already have, so we can check for default file types. */
3092 while (deftypes ||
84486fc6 3093 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3094 {
3095 if (deftypes) {
3096 deftypes = 0;
84486fc6 3097 *tmpbuf = '\0';
491527d0 3098 }
84486fc6
GS
3099 if ((strlen(tmpbuf) + strlen(scriptname)
3100 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3101 continue; /* don't search dir with too-long name */
84486fc6 3102 strcat(tmpbuf, scriptname);
491527d0
GS
3103#else /* !VMS */
3104
3105#ifdef DOSISH
3106 if (strEQ(scriptname, "-"))
3107 dosearch = 0;
3108 if (dosearch) { /* Look in '.' first. */
3109 char *cur = scriptname;
3110#ifdef SEARCH_EXTS
3111 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3112 while (ext[i])
3113 if (strEQ(ext[i++],curext)) {
3114 extidx = -1; /* already has an ext */
3115 break;
3116 }
3117 do {
3118#endif
3119 DEBUG_p(PerlIO_printf(Perl_debug_log,
3120 "Looking for %s\n",cur));
017f25f1
IZ
3121 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3122 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3123 dosearch = 0;
3124 scriptname = cur;
3125#ifdef SEARCH_EXTS
3126 break;
3127#endif
3128 }
3129#ifdef SEARCH_EXTS
3130 if (cur == scriptname) {
3131 len = strlen(scriptname);
84486fc6 3132 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3133 break;
84486fc6 3134 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3135 }
3136 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3137 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3138#endif
3139 }
3140#endif
3141
3142 if (dosearch && !strchr(scriptname, '/')
3143#ifdef DOSISH
3144 && !strchr(scriptname, '\\')
3145#endif
3146 && (s = PerlEnv_getenv("PATH"))) {
3147 bool seen_dot = 0;
3148
3280af22
NIS
3149 PL_bufend = s + strlen(s);
3150 while (s < PL_bufend) {
491527d0
GS
3151#if defined(atarist) || defined(DOSISH)
3152 for (len = 0; *s
3153# ifdef atarist
3154 && *s != ','
3155# endif
3156 && *s != ';'; len++, s++) {
84486fc6
GS
3157 if (len < sizeof tmpbuf)
3158 tmpbuf[len] = *s;
491527d0 3159 }
84486fc6
GS
3160 if (len < sizeof tmpbuf)
3161 tmpbuf[len] = '\0';
491527d0 3162#else /* ! (atarist || DOSISH) */
3280af22 3163 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3164 ':',
3165 &len);
3166#endif /* ! (atarist || DOSISH) */
3280af22 3167 if (s < PL_bufend)
491527d0 3168 s++;
84486fc6 3169 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
3170 continue; /* don't search dir with too-long name */
3171 if (len
61ae2fbf 3172#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3173 && tmpbuf[len - 1] != '/'
3174 && tmpbuf[len - 1] != '\\'
491527d0
GS
3175#endif
3176 )
84486fc6
GS
3177 tmpbuf[len++] = '/';
3178 if (len == 2 && tmpbuf[0] == '.')
491527d0 3179 seen_dot = 1;
84486fc6 3180 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3181#endif /* !VMS */
3182
3183#ifdef SEARCH_EXTS
84486fc6 3184 len = strlen(tmpbuf);
491527d0
GS
3185 if (extidx > 0) /* reset after previous loop */
3186 extidx = 0;
3187 do {
3188#endif
84486fc6 3189 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3190 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3191 if (S_ISDIR(PL_statbuf.st_mode)) {
3192 retval = -1;
3193 }
491527d0
GS
3194#ifdef SEARCH_EXTS
3195 } while ( retval < 0 /* not there */
3196 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3197 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3198 );
3199#endif
3200 if (retval < 0)
3201 continue;
3280af22
NIS
3202 if (S_ISREG(PL_statbuf.st_mode)
3203 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3204#ifndef DOSISH
3280af22 3205 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3206#endif
3207 )
3208 {
84486fc6 3209 xfound = tmpbuf; /* bingo! */
491527d0
GS
3210 break;
3211 }
3212 if (!xfailed)
84486fc6 3213 xfailed = savepv(tmpbuf);
491527d0
GS
3214 }
3215#ifndef DOSISH
017f25f1
IZ
3216 if (!xfound && !seen_dot && !xfailed &&
3217 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3218 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3219#endif
3220 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3221 if (!xfound) {
3222 if (flags & 1) { /* do or die? */
cea2e8a9 3223 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3224 (xfailed ? "execute" : "find"),
3225 (xfailed ? xfailed : scriptname),
3226 (xfailed ? "" : " on PATH"),
3227 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3228 }
3229 scriptname = Nullch;
3230 }
491527d0
GS
3231 if (xfailed)
3232 Safefree(xfailed);
3233 scriptname = xfound;
3234 }
9ccb31f9 3235 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3236}
3237
3238
11343788 3239#ifdef USE_THREADS
12ca11f6
MB
3240#ifdef FAKE_THREADS
3241/* Very simplistic scheduler for now */
3242void
3243schedule(void)
3244{
c7848ba1 3245 thr = thr->i.next_run;
12ca11f6
MB
3246}
3247
3248void
864dbfa3 3249Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3250{
3251 *cp = 0;
3252}
3253
3254void
864dbfa3 3255Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3256{
51dd5992 3257 perl_os_thread t;
12ca11f6
MB
3258 perl_cond cond = *cp;
3259
3260 if (!cond)
3261 return;
3262 t = cond->thread;
3263 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3264 t->i.next_run = thr->i.next_run;
3265 thr->i.next_run->i.prev_run = t;
3266 t->i.prev_run = thr;
3267 thr->i.next_run = t;
3268 thr->i.wait_queue = 0;
12ca11f6
MB
3269 /* Remove from the wait queue */
3270 *cp = cond->next;
3271 Safefree(cond);
3272}
3273
3274void
864dbfa3 3275Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3276{
51dd5992 3277 perl_os_thread t;
12ca11f6
MB
3278 perl_cond cond, cond_next;
3279
3280 for (cond = *cp; cond; cond = cond_next) {
3281 t = cond->thread;
3282 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3283 t->i.next_run = thr->i.next_run;
3284 thr->i.next_run->i.prev_run = t;
3285 t->i.prev_run = thr;
3286 thr->i.next_run = t;
3287 thr->i.wait_queue = 0;
12ca11f6
MB
3288 /* Remove from the wait queue */
3289 cond_next = cond->next;
3290 Safefree(cond);
3291 }
3292 *cp = 0;
3293}
3294
3295void
864dbfa3 3296Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3297{
3298 perl_cond cond;
3299
c7848ba1 3300 if (thr->i.next_run == thr)
cea2e8a9 3301 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3302
0f15f207 3303 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3304 cond->thread = thr;
3305 cond->next = *cp;
3306 *cp = cond;
c7848ba1 3307 thr->i.wait_queue = cond;
12ca11f6 3308 /* Remove ourselves from runnable queue */
c7848ba1
MB
3309 thr->i.next_run->i.prev_run = thr->i.prev_run;
3310 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3311}
3312#endif /* FAKE_THREADS */
3313
0d85d877 3314#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3315struct perl_thread *
864dbfa3 3316Perl_getTHR(pTHX)
11343788
MB
3317{
3318 pthread_addr_t t;
3319
6b88bc9c 3320 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3321 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3322 return (struct perl_thread *) t;
11343788 3323}
0d85d877 3324#endif
f93b4edd
MB
3325
3326MAGIC *
864dbfa3 3327Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3328{
3329 MAGIC *mg;
3330
3331 SvUPGRADE(sv, SVt_PVMG);
3332 mg = mg_find(sv, 'm');
3333 if (!mg) {
3334 condpair_t *cp;
3335
3336 New(53, cp, 1, condpair_t);
3337 MUTEX_INIT(&cp->mutex);
3338 COND_INIT(&cp->owner_cond);
3339 COND_INIT(&cp->cond);
3340 cp->owner = 0;
28a8573f 3341 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3342 mg = mg_find(sv, 'm');
3343 if (mg) {
3344 /* someone else beat us to initialising it */
28a8573f 3345 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3346 MUTEX_DESTROY(&cp->mutex);
3347 COND_DESTROY(&cp->owner_cond);
3348 COND_DESTROY(&cp->cond);
3349 Safefree(cp);
3350 }
3351 else {
3352 sv_magic(sv, Nullsv, 'm', 0, 0);
3353 mg = SvMAGIC(sv);
3354 mg->mg_ptr = (char *)cp;
565764a8 3355 mg->mg_len = sizeof(cp);
28a8573f 3356 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
bf49b057 3357 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3358 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3359 }
3360 }
3361 return mg;
3362}
a863c7d1
MB
3363
3364/*
199100c8
MB
3365 * Make a new perl thread structure using t as a prototype. Some of the
3366 * fields for the new thread are copied from the prototype thread, t,
3367 * so t should not be running in perl at the time this function is
3368 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3369 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3370 */
52e1cb5e 3371struct perl_thread *
864dbfa3 3372Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3373{
c5be433b 3374#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3375 struct perl_thread *thr;
cea2e8a9 3376#endif
a863c7d1 3377 SV *sv;
199100c8
MB
3378 SV **svp;
3379 I32 i;
3380
79cb57f6 3381 sv = newSVpvn("", 0);
52e1cb5e
JH
3382 SvGROW(sv, sizeof(struct perl_thread) + 1);
3383 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3384 thr = (Thread) SvPVX(sv);
949ced2d 3385#ifdef DEBUGGING
52e1cb5e 3386 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3387 PL_markstack = 0;
3388 PL_scopestack = 0;
3389 PL_savestack = 0;
3390 PL_retstack = 0;
3391 PL_dirty = 0;
3392 PL_localizing = 0;
949ced2d
GS
3393 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3394#else
3395 Zero(thr, 1, struct perl_thread);
3396#endif
199100c8 3397
0b94c7bb 3398 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3399
199100c8 3400 thr->oursv = sv;
cea2e8a9 3401 init_stacks();
a863c7d1 3402
533c011a 3403 PL_curcop = &PL_compiling;
c5be433b 3404 thr->interp = t->interp;
199100c8 3405 thr->cvcache = newHV();
54b9620d 3406 thr->threadsv = newAV();
a863c7d1 3407 thr->specific = newAV();
79cb57f6 3408 thr->errsv = newSVpvn("", 0);
38a03e6e 3409 thr->errhv = newHV();
a863c7d1
MB
3410 thr->flags = THRf_R_JOINABLE;
3411 MUTEX_INIT(&thr->mutex);
199100c8 3412
d55594ae
GS
3413 /* top_env needs to be non-zero. It points to an area
3414 in which longjmp() stuff is stored, as C callstack
3415 info there at least is thread specific this has to
3416 be per-thread. Otherwise a 'die' in a thread gives
3417 that thread the C stack of last thread to do an eval {}!
3418 See comments in scope.h
3419 Initialize top entry (as in perl.c for main thread)
3420 */
533c011a
NIS
3421 PL_start_env.je_prev = NULL;
3422 PL_start_env.je_ret = -1;
3423 PL_start_env.je_mustcatch = TRUE;
3424 PL_top_env = &PL_start_env;
3425
faef0170 3426 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3427 PL_restartop = 0;
3428
b099ddc0 3429 PL_statname = NEWSV(66,0);
5a844595 3430 PL_errors = newSVpvn("", 0);
b099ddc0 3431 PL_maxscream = -1;
0b94c7bb
GS
3432 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3433 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3434 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3435 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3436 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3437 PL_regindent = 0;
3438 PL_reginterp_cnt = 0;
3439 PL_lastscream = Nullsv;
3440 PL_screamfirst = 0;
3441 PL_screamnext = 0;
3442 PL_reg_start_tmp = 0;
3443 PL_reg_start_tmpl = 0;
14ed4b74 3444 PL_reg_poscache = Nullch;
b099ddc0
GS
3445
3446 /* parent thread's data needs to be locked while we make copy */
3447 MUTEX_LOCK(&t->mutex);
3448
312caa8e
CS
3449 PL_protect = t->Tprotect;
3450
b099ddc0
GS
3451 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3452 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3453 PL_curstash = t->Tcurstash; /* always be set to main? */
3454
6b88bc9c 3455 PL_tainted = t->Ttainted;
84fee439
NIS
3456 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3457 PL_nrs = newSVsv(t->Tnrs);
3458 PL_rs = SvREFCNT_inc(PL_nrs);
3459 PL_last_in_gv = Nullgv;
3460 PL_ofslen = t->Tofslen;
3461 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3462 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3463 PL_chopset = t->Tchopset;
3464 PL_formtarget = newSVsv(t->Tformtarget);
3465 PL_bodytarget = newSVsv(t->Tbodytarget);
3466 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3467
54b9620d
MB
3468 /* Initialise all per-thread SVs that the template thread used */
3469 svp = AvARRAY(t->threadsv);
93965878 3470 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3471 if (*svp && *svp != &PL_sv_undef) {
199100c8 3472 SV *sv = newSVsv(*svp);
54b9620d 3473 av_store(thr->threadsv, i, sv);
533c011a 3474 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3475 DEBUG_S(PerlIO_printf(Perl_debug_log,
54b9620d 3476 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
3477 }
3478 }
940cb80d 3479 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3480
533c011a
NIS
3481 MUTEX_LOCK(&PL_threads_mutex);
3482 PL_nthreads++;
3483 thr->tid = ++PL_threadnum;
199100c8
MB
3484 thr->next = t->next;
3485 thr->prev = t;
3486 t->next = thr;
3487 thr->next->prev = thr;
533c011a 3488 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3489
b099ddc0
GS
3490 /* done copying parent's state */
3491 MUTEX_UNLOCK(&t->mutex);
3492
a863c7d1 3493#ifdef HAVE_THREAD_INTERN
4f63d024 3494 Perl_init_thread_intern(thr);
a863c7d1 3495#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3496 return thr;
3497}
11343788 3498#endif /* USE_THREADS */
760ac839
LW
3499
3500#ifdef HUGE_VAL
3501/*
3502 * This hack is to force load of "huge" support from libm.a
3503 * So it is in perl for (say) POSIX to use.
3504 * Needed for SunOS with Sun's 'acc' for example.
3505 */
65202027 3506NV
8ac85365 3507Perl_huge(void)
760ac839
LW
3508{
3509 return HUGE_VAL;
3510}
3511#endif
4e35701f 3512
22239a37
NIS
3513#ifdef PERL_GLOBAL_STRUCT
3514struct perl_vars *
864dbfa3 3515Perl_GetVars(pTHX)
22239a37 3516{
533c011a 3517 return &PL_Vars;
22239a37 3518}
31fb1209
NIS
3519#endif
3520
3521char **
864dbfa3 3522Perl_get_op_names(pTHX)
31fb1209 3523{
22c35a8c 3524 return PL_op_name;
31fb1209
NIS
3525}
3526
3527char **
864dbfa3 3528Perl_get_op_descs(pTHX)
31fb1209 3529{
22c35a8c 3530 return PL_op_desc;
31fb1209 3531}
9e6b2b00
GS
3532
3533char *
864dbfa3 3534Perl_get_no_modify(pTHX)
9e6b2b00 3535{
22c35a8c 3536 return (char*)PL_no_modify;
9e6b2b00
GS
3537}
3538
3539U32 *
864dbfa3 3540Perl_get_opargs(pTHX)
9e6b2b00 3541{
22c35a8c 3542 return PL_opargs;
9e6b2b00 3543}
51aa15f3 3544
0cb96387
GS
3545PPADDR_t*
3546Perl_get_ppaddr(pTHX)
3547{
3548 return &PL_ppaddr;
3549}
3550
a6c40364
GS
3551#ifndef HAS_GETENV_LEN
3552char *
864dbfa3 3553Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS
3554{
3555 char *env_trans = PerlEnv_getenv(env_elem);
3556 if (env_trans)
3557 *len = strlen(env_trans);
3558 return env_trans;
f675dbe5
CB
3559}
3560#endif
3561
dc9e4912
GS
3562
3563MGVTBL*
864dbfa3 3564Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS
3565{
3566 MGVTBL* result = Null(MGVTBL*);
3567
3568 switch(vtbl_id) {
3569 case want_vtbl_sv:
3570 result = &PL_vtbl_sv;
3571 break;
3572 case want_vtbl_env:
3573 result = &PL_vtbl_env;
3574 break;
3575 case want_vtbl_envelem:
3576 result = &PL_vtbl_envelem;
3577 break;
3578 case want_vtbl_sig:
3579 result = &PL_vtbl_sig;
3580 break;
3581 case want_vtbl_sigelem:
3582 result = &PL_vtbl_sigelem;
3583 break;
3584 case want_vtbl_pack:
3585 result = &PL_vtbl_pack;
3586 break;
3587 case want_vtbl_packelem:
3588 result = &PL_vtbl_packelem;
3589 break;
3590 case want_vtbl_dbline:
3591 result = &PL_vtbl_dbline;
3592 break;
3593 case want_vtbl_isa:
3594 result = &PL_vtbl_isa;
3595 break;
3596 case want_vtbl_isaelem:
3597 result = &PL_vtbl_isaelem;
3598 break;
3599 case want_vtbl_arylen:
3600 result = &PL_vtbl_arylen;
3601 break;
3602 case want_vtbl_glob:
3603 result = &PL_vtbl_glob;
3604 break;
3605 case want_vtbl_mglob:
3606 result = &PL_vtbl_mglob;
3607 break;
3608 case want_vtbl_nkeys:
3609 result = &PL_vtbl_nkeys;
3610 break;
3611 case want_vtbl_taint:
3612 result = &PL_vtbl_taint;
3613 break;
3614 case want_vtbl_substr:
3615 result = &PL_vtbl_substr;
3616 break;
3617 case want_vtbl_vec:
3618 result = &PL_vtbl_vec;
3619 break;
3620 case want_vtbl_pos:
3621 result = &PL_vtbl_pos;
3622 break;
3623 case want_vtbl_bm:
3624 result = &PL_vtbl_bm;
3625 break;
3626 case want_vtbl_fm:
3627 result = &PL_vtbl_fm;
3628 break;
3629 case want_vtbl_uvar:
3630 result = &PL_vtbl_uvar;
3631 break;
3632#ifdef