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[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
d48672a2
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24
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) {
16cebae2
GS
88 PerlIO_printf(PerlIO_stderr(),
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 {
22c35a8c 104 PerlIO_puts(PerlIO_stderr(),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
PP
123 if (size > 0xffff) {
124 PerlIO_printf(PerlIO_stderr(),
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 {
22c35a8c 150 PerlIO_puts(PerlIO_stderr(),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
PP
179 if (size * count > 0xffff) {
180 PerlIO_printf(PerlIO_stderr(),
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 {
22c35a8c 199 PerlIO_puts(PerlIO_stderr(),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
301 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 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 */
312 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
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 */
321 PerlIO_printf(PerlIO_stderr(),"%3ld ",
322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
327 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
328 }
329 }
330 PerlIO_printf(PerlIO_stderr(), "\n");
331 }
332 }
333 if (flag != 2) {
334 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
337 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
338 } else {
339 PerlIO_printf(PerlIO_stderr(), " . ");
340 }
8d063cd8 341 }
8c52afec 342 PerlIO_printf(PerlIO_stderr(), "\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
714 PerlIO_printf(PerlIO_stderr(),
715 "perl: warning: Setting locale failed.\n");
716
717#else /* !LC_ALL */
718
ef7eada9 719 PerlIO_printf(PerlIO_stderr(),
bbce6d69 720 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 721#ifdef USE_LOCALE_CTYPE
bbce6d69 722 if (! curctype)
5f05dabc 723 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
724#endif /* USE_LOCALE_CTYPE */
725#ifdef USE_LOCALE_COLLATE
bbce6d69 726 if (! curcoll)
5f05dabc 727 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
728#endif /* USE_LOCALE_COLLATE */
729#ifdef USE_LOCALE_NUMERIC
bbce6d69 730 if (! curnum)
5f05dabc 731 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 732#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
733 PerlIO_printf(PerlIO_stderr(), "\n");
734
5f05dabc
PP
735#endif /* LC_ALL */
736
760ac839 737 PerlIO_printf(PerlIO_stderr(),
bbce6d69 738 "perl: warning: Please check that your locale settings:\n");
ef7eada9 739
3aeabbed
JH
740#ifdef __GLIBC__
741 PerlIO_printf(PerlIO_stderr(),
742 "\tLANGUAGE = %c%s%c,\n",
743 language ? '"' : '(',
744 language ? language : "unset",
745 language ? '"' : ')');
746#endif
747
ef7eada9 748 PerlIO_printf(PerlIO_stderr(),
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, '=')))
760 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 761 (int)(p - *e), *e, p + 1);
5f05dabc
PP
762 }
763 }
764
ef7eada9 765 PerlIO_printf(PerlIO_stderr(),
bbce6d69 766 "\tLANG = %c%s%c\n",
5f05dabc 767 lang ? '"' : '(',
bbce6d69
PP
768 lang ? lang : "unset",
769 lang ? '"' : ')');
ef7eada9 770
bbce6d69
PP
771 PerlIO_printf(PerlIO_stderr(),
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)
779 PerlIO_printf(PerlIO_stderr(),
780 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 781 ok = 0;
ef7eada9 782 }
5f05dabc
PP
783 else {
784 if (locwarn)
785 PerlIO_printf(PerlIO_stderr(),
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)
bbce6d69 805 PerlIO_printf(PerlIO_stderr(),
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
8b73bbec 1466 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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
8b73bbec 1484 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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);
8b73bbec 1524 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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
1577 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s",
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
06bf62c7 1615 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS
1616 (void)PerlIO_flush(PerlIO_stderr());
1617#ifdef USE_SFIO
1618 errno = e;
1619#endif
1620 }
f86702cc 1621 my_failure_exit();
a687059c
LW
1622}
1623
c5be433b 1624#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1625void
cea2e8a9 1626Perl_croak_nocontext(const char *pat, ...)
a687059c 1627{
cea2e8a9 1628 dTHX;
a687059c 1629 va_list args;
cea2e8a9 1630 va_start(args, pat);
c5be433b 1631 vcroak(pat, &args);
cea2e8a9
GS
1632 /* NOTREACHED */
1633 va_end(args);
1634}
1635#endif /* PERL_IMPLICIT_CONTEXT */
1636
1637void
1638Perl_croak(pTHX_ const char *pat, ...)
1639{
1640 va_list args;
1641 va_start(args, pat);
c5be433b 1642 vcroak(pat, &args);
cea2e8a9
GS
1643 /* NOTREACHED */
1644 va_end(args);
1645}
1646
c5be433b
GS
1647void
1648Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1649{
de3bb511 1650 char *message;
748a9306
LW
1651 HV *stash;
1652 GV *gv;
1653 CV *cv;
06bf62c7
GS
1654 SV *msv;
1655 STRLEN msglen;
a687059c 1656
5a844595 1657 msv = vmess(pat, args);
06bf62c7 1658 message = SvPV(msv, msglen);
a687059c 1659
3280af22 1660 if (PL_warnhook) {
cea2e8a9 1661 /* sv_2cv might call Perl_warn() */
11343788 1662 dTHR;
3280af22 1663 SV *oldwarnhook = PL_warnhook;
1738f5c4 1664 ENTER;
3280af22
NIS
1665 SAVESPTR(PL_warnhook);
1666 PL_warnhook = Nullsv;
20cec16a 1667 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1668 LEAVE;
1669 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1670 dSP;
774d564b
PP
1671 SV *msg;
1672
1673 ENTER;
06bf62c7 1674 msg = newSVpvn(message, msglen);
774d564b
PP
1675 SvREADONLY_on(msg);
1676 SAVEFREESV(msg);
1677
e788e7d3 1678 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1679 PUSHMARK(SP);
774d564b 1680 XPUSHs(msg);
20cec16a 1681 PUTBACK;
864dbfa3 1682 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1683 POPSTACK;
774d564b 1684 LEAVE;
20cec16a
PP
1685 return;
1686 }
748a9306 1687 }
06bf62c7 1688 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1689#ifdef LEAKTEST
8c52afec
IZ
1690 DEBUG_L(*message == '!'
1691 ? (xstat(message[1]=='!'
1692 ? (message[2]=='!' ? 2 : 1)
1693 : 0)
1694 , 0)
1695 : 0);
a687059c 1696#endif
20cec16a 1697 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1698}
8d063cd8 1699
c5be433b 1700#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1701void
1702Perl_warn_nocontext(const char *pat, ...)
1703{
1704 dTHX;
1705 va_list args;
1706 va_start(args, pat);
c5be433b 1707 vwarn(pat, &args);
cea2e8a9
GS
1708 va_end(args);
1709}
1710#endif /* PERL_IMPLICIT_CONTEXT */
1711
1712void
1713Perl_warn(pTHX_ const char *pat, ...)
1714{
1715 va_list args;
1716 va_start(args, pat);
c5be433b 1717 vwarn(pat, &args);
cea2e8a9
GS
1718 va_end(args);
1719}
1720
c5be433b
GS
1721#if defined(PERL_IMPLICIT_CONTEXT)
1722void
1723Perl_warner_nocontext(U32 err, const char *pat, ...)
1724{
1725 dTHX;
1726 va_list args;
1727 va_start(args, pat);
1728 vwarner(err, pat, &args);
1729 va_end(args);
1730}
1731#endif /* PERL_IMPLICIT_CONTEXT */
1732
599cee73 1733void
864dbfa3 1734Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1735{
1736 va_list args;
c5be433b
GS
1737 va_start(args, pat);
1738 vwarner(err, pat, &args);
1739 va_end(args);
1740}
1741
1742void
1743Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1744{
1745 dTHR;
599cee73
PM
1746 char *message;
1747 HV *stash;
1748 GV *gv;
1749 CV *cv;
06bf62c7
GS
1750 SV *msv;
1751 STRLEN msglen;
599cee73 1752
5a844595 1753 msv = vmess(pat, args);
06bf62c7 1754 message = SvPV(msv, msglen);
599cee73
PM
1755
1756 if (ckDEAD(err)) {
1757#ifdef USE_THREADS
d008e5eb 1758 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1759#endif /* USE_THREADS */
1760 if (PL_diehook) {
cea2e8a9 1761 /* sv_2cv might call Perl_croak() */
599cee73
PM
1762 SV *olddiehook = PL_diehook;
1763 ENTER;
1764 SAVESPTR(PL_diehook);
1765 PL_diehook = Nullsv;
1766 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1767 LEAVE;
1768 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1769 dSP;
1770 SV *msg;
1771
1772 ENTER;
06bf62c7 1773 msg = newSVpvn(message, msglen);
599cee73
PM
1774 SvREADONLY_on(msg);
1775 SAVEFREESV(msg);
1776
1777 PUSHMARK(sp);
1778 XPUSHs(msg);
1779 PUTBACK;
864dbfa3 1780 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1781
1782 LEAVE;
1783 }
1784 }
1785 if (PL_in_eval) {
06bf62c7 1786 PL_restartop = die_where(message, msglen);
599cee73
PM
1787 JMPENV_JUMP(3);
1788 }
06bf62c7 1789 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1790 (void)PerlIO_flush(PerlIO_stderr());
1791 my_failure_exit();
1792
1793 }
1794 else {
1795 if (PL_warnhook) {
cea2e8a9 1796 /* sv_2cv might call Perl_warn() */
599cee73
PM
1797 dTHR;
1798 SV *oldwarnhook = PL_warnhook;
1799 ENTER;
1800 SAVESPTR(PL_warnhook);
1801 PL_warnhook = Nullsv;
1802 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1803 LEAVE;
1804 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1805 dSP;
1806 SV *msg;
1807
1808 ENTER;
06bf62c7 1809 msg = newSVpvn(message, msglen);
599cee73
PM
1810 SvREADONLY_on(msg);
1811 SAVEFREESV(msg);
1812
1813 PUSHMARK(sp);
1814 XPUSHs(msg);
1815 PUTBACK;
864dbfa3 1816 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1817
1818 LEAVE;
1819 return;
1820 }
1821 }
06bf62c7 1822 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1823#ifdef LEAKTEST
1824 DEBUG_L(xstat());
1825#endif
1826 (void)PerlIO_flush(PerlIO_stderr());
1827 }
1828}
1829
a0d0e21e 1830#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1831#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1832void
864dbfa3 1833Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1834{
f2517201
GS
1835#ifndef PERL_USE_SAFE_PUTENV
1836 /* most putenv()s leak, so we manipulate environ directly */
79072805 1837 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1838
3280af22 1839 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1840 I32 j;
1841 I32 max;
fe14fcc3
LW
1842 char **tmpenv;
1843
de3bb511 1844 /*SUPPRESS 530*/
fe14fcc3 1845 for (max = i; environ[max]; max++) ;
f2517201
GS
1846 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1847 for (j=0; j<max; j++) { /* copy environment */
1848 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1849 strcpy(tmpenv[j], environ[j]);
1850 }
fe14fcc3
LW
1851 tmpenv[max] = Nullch;
1852 environ = tmpenv; /* tell exec where it is now */
1853 }
a687059c 1854 if (!val) {
f2517201 1855 safesysfree(environ[i]);
a687059c
LW
1856 while (environ[i]) {
1857 environ[i] = environ[i+1];
1858 i++;
1859 }
1860 return;
1861 }
8d063cd8 1862 if (!environ[i]) { /* does not exist yet */
f2517201 1863 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1864 environ[i+1] = Nullch; /* make sure it's null terminated */
1865 }
fe14fcc3 1866 else
f2517201
GS
1867 safesysfree(environ[i]);
1868 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1869
a687059c 1870 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1871
1872#else /* PERL_USE_SAFE_PUTENV */
1873 char *new_env;
1874
1875 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1876 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1877 (void)putenv(new_env);
1878#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1879}
1880
2c2d71f5
JH
1881#else /* WIN32 || CYGWIN */
1882#if defined(CYGWIN)
1cab015a
FE
1883/*
1884 * Save environ of perl.exe, currently Cygwin links in separate environ's
1885 * for each exe/dll. Probably should be a member of impure_ptr.
1886 */
1887static char ***Perl_main_environ;
1888
1889EXTERN_C void
1890Perl_my_setenv_init(char ***penviron)
1891{
1892 Perl_main_environ = penviron;
1893}
1894
1895void
1896my_setenv(char *nam, char *val)
1897{
1898 /* You can not directly manipulate the environ[] array because
1899 * the routines do some additional work that syncs the Cygwin
1900 * environment with the Windows environment.
1901 */
1902 char *oldstr = environ[setenv_getix(nam)];
1903
1904 if (!val) {
1905 if (!oldstr)
1906 return;
1907 unsetenv(nam);
1908 Safefree(oldstr);
1909 return;
1910 }
1911 setenv(nam, val, 1);
1912 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1913 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1914 Safefree(oldstr);
1915}
3e3baf6d 1916#else /* if WIN32 */
68dc0745
PP
1917
1918void
864dbfa3 1919Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1920{
3e3baf6d
TB
1921
1922#ifdef USE_WIN32_RTL_ENV
1923
68dc0745
PP
1924 register char *envstr;
1925 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1926 STRLEN vallen;
1927 char *oldstr = environ[setenv_getix(nam)];
1928
1929 /* putenv() has totally broken semantics in both the Borland
1930 * and Microsoft CRTLs. They either store the passed pointer in
1931 * the environment without making a copy, or make a copy and don't
1932 * free it. And on top of that, they dont free() old entries that
1933 * are being replaced/deleted. This means the caller must
1934 * free any old entries somehow, or we end up with a memory
1935 * leak every time my_setenv() is called. One might think
1936 * one could directly manipulate environ[], like the UNIX code
1937 * above, but direct changes to environ are not allowed when
1938 * calling putenv(), since the RTLs maintain an internal
1939 * *copy* of environ[]. Bad, bad, *bad* stink.
1940 * GSAR 97-06-07
1941 */
68dc0745 1942
3e3baf6d
TB
1943 if (!val) {
1944 if (!oldstr)
1945 return;
1946 val = "";
1947 vallen = 0;
1948 }
1949 else
1950 vallen = strlen(val);
f2517201 1951 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1952 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1953 (void)PerlEnv_putenv(envstr);
3e3baf6d 1954 if (oldstr)
f2517201 1955 safesysfree(oldstr);
3e3baf6d 1956#ifdef _MSC_VER
f2517201 1957 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1958#endif
1959
1960#else /* !USE_WIN32_RTL_ENV */
1961
ac5c734f
GS
1962 register char *envstr;
1963 STRLEN len = strlen(nam) + 3;
1964 if (!val) {
1965 val = "";
1966 }
1967 len += strlen(val);
1968 New(904, envstr, len, char);
1969 (void)sprintf(envstr,"%s=%s",nam,val);
1970 (void)PerlEnv_putenv(envstr);
1971 Safefree(envstr);
3e3baf6d
TB
1972
1973#endif
1974}
1975
1976#endif /* WIN32 */
1cab015a 1977#endif
3e3baf6d
TB
1978
1979I32
864dbfa3 1980Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
1981{
1982 register I32 i, len = strlen(nam);
1983
1984 for (i = 0; environ[i]; i++) {
1985 if (
1986#ifdef WIN32
1987 strnicmp(environ[i],nam,len) == 0
1988#else
1989 strnEQ(environ[i],nam,len)
1990#endif
1991 && environ[i][len] == '=')
1992 break; /* strnEQ must come first to avoid */
1993 } /* potential SEGV's */
1994 return i;
68dc0745
PP
1995}
1996
a0d0e21e 1997#endif /* !VMS */
378cc40b 1998
16d20bd9 1999#ifdef UNLINK_ALL_VERSIONS
79072805 2000I32
864dbfa3 2001Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2002{
79072805 2003 I32 i;
378cc40b 2004
6ad3d225 2005 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
2006 return i ? 0 : -1;
2007}
2008#endif
2009
85e6fe83 2010#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2011char *
864dbfa3 2012Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW
2013{
2014 char *retval = to;
2015
7c0587c8
LW
2016 if (from - to >= 0) {
2017 while (len--)
2018 *to++ = *from++;
2019 }
2020 else {
2021 to += len;
2022 from += len;
2023 while (len--)
faf8582f 2024 *(--to) = *(--from);
7c0587c8 2025 }
378cc40b
LW
2026 return retval;
2027}
ffed7fef 2028#endif
378cc40b 2029
fc36a67e
PP
2030#ifndef HAS_MEMSET
2031void *
864dbfa3 2032Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
2033{
2034 char *retval = loc;
2035
2036 while (len--)
2037 *loc++ = ch;
2038 return retval;
2039}
2040#endif
2041
7c0587c8 2042#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2043char *
864dbfa3 2044Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW
2045{
2046 char *retval = loc;
2047
2048 while (len--)
2049 *loc++ = 0;
2050 return retval;
2051}
2052#endif
7c0587c8 2053
36477c24 2054#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2055I32
864dbfa3 2056Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2057{
36477c24
PP
2058 register U8 *a = (U8 *)s1;
2059 register U8 *b = (U8 *)s2;
79072805 2060 register I32 tmp;
7c0587c8
LW
2061
2062 while (len--) {
36477c24 2063 if (tmp = *a++ - *b++)
7c0587c8
LW
2064 return tmp;
2065 }
2066 return 0;
2067}
36477c24 2068#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2069
fe14fcc3 2070#ifndef HAS_VPRINTF
a687059c 2071
85e6fe83 2072#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2073char *
2074#else
2075int
2076#endif
08105a92 2077vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2078{
2079 FILE fakebuf;
2080
2081 fakebuf._ptr = dest;
2082 fakebuf._cnt = 32767;
35c8bce7
LW
2083#ifndef _IOSTRG
2084#define _IOSTRG 0
2085#endif
a687059c
LW
2086 fakebuf._flag = _IOWRT|_IOSTRG;
2087 _doprnt(pat, args, &fakebuf); /* what a kludge */
2088 (void)putc('\0', &fakebuf);
85e6fe83 2089#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2090 return(dest);
2091#else
2092 return 0; /* perl doesn't use return value */
2093#endif
2094}
2095
fe14fcc3 2096#endif /* HAS_VPRINTF */
a687059c
LW
2097
2098#ifdef MYSWAP
ffed7fef 2099#if BYTEORDER != 0x4321
a687059c 2100short
864dbfa3 2101Perl_my_swap(pTHX_ short s)
a687059c
LW
2102{
2103#if (BYTEORDER & 1) == 0
2104 short result;
2105
2106 result = ((s & 255) << 8) + ((s >> 8) & 255);
2107 return result;
2108#else
2109 return s;
2110#endif
2111}
2112
2113long
864dbfa3 2114Perl_my_htonl(pTHX_ long l)
a687059c
LW
2115{
2116 union {
2117 long result;
ffed7fef 2118 char c[sizeof(long)];
a687059c
LW
2119 } u;
2120
ffed7fef 2121#if BYTEORDER == 0x1234
a687059c
LW
2122 u.c[0] = (l >> 24) & 255;
2123 u.c[1] = (l >> 16) & 255;
2124 u.c[2] = (l >> 8) & 255;
2125 u.c[3] = l & 255;
2126 return u.result;
2127#else
ffed7fef 2128#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2129 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2130#else
79072805
LW
2131 register I32 o;
2132 register I32 s;
a687059c 2133
ffed7fef
LW
2134 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2135 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2136 }
2137 return u.result;
2138#endif
2139#endif
2140}
2141
2142long
864dbfa3 2143Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2144{
2145 union {
2146 long l;
ffed7fef 2147 char c[sizeof(long)];
a687059c
LW
2148 } u;
2149
ffed7fef 2150#if BYTEORDER == 0x1234
a687059c
LW
2151 u.c[0] = (l >> 24) & 255;
2152 u.c[1] = (l >> 16) & 255;
2153 u.c[2] = (l >> 8) & 255;
2154 u.c[3] = l & 255;
2155 return u.l;
2156#else
ffed7fef 2157#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2158 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2159#else
79072805
LW
2160 register I32 o;
2161 register I32 s;
a687059c
LW
2162
2163 u.l = l;
2164 l = 0;
ffed7fef
LW
2165 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2166 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2167 }
2168 return l;
2169#endif
2170#endif
2171}
2172
ffed7fef 2173#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2174#endif /* MYSWAP */
2175
2176/*
2177 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2178 * If these functions are defined,
2179 * the BYTEORDER is neither 0x1234 nor 0x4321.
2180 * However, this is not assumed.
2181 * -DWS
2182 */
2183
2184#define HTOV(name,type) \
2185 type \
ba106d47 2186 name (register type n) \
988174c1
LW
2187 { \
2188 union { \
2189 type value; \
2190 char c[sizeof(type)]; \
2191 } u; \
79072805
LW
2192 register I32 i; \
2193 register I32 s; \
988174c1
LW
2194 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2195 u.c[i] = (n >> s) & 0xFF; \
2196 } \
2197 return u.value; \
2198 }
2199
2200#define VTOH(name,type) \
2201 type \
ba106d47 2202 name (register type n) \
988174c1
LW
2203 { \
2204 union { \
2205 type value; \
2206 char c[sizeof(type)]; \
2207 } u; \
79072805
LW
2208 register I32 i; \
2209 register I32 s; \
988174c1
LW
2210 u.value = n; \
2211 n = 0; \
2212 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2213 n += (u.c[i] & 0xFF) << s; \
2214 } \
2215 return n; \
2216 }
2217
2218#if defined(HAS_HTOVS) && !defined(htovs)
2219HTOV(htovs,short)
2220#endif
2221#if defined(HAS_HTOVL) && !defined(htovl)
2222HTOV(htovl,long)
2223#endif
2224#if defined(HAS_VTOHS) && !defined(vtohs)
2225VTOH(vtohs,short)
2226#endif
2227#if defined(HAS_VTOHL) && !defined(vtohl)
2228VTOH(vtohl,long)
2229#endif
a687059c 2230
5f05dabc 2231 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2232#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2233PerlIO *
864dbfa3 2234Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2235{
2236 int p[2];
8ac85365 2237 register I32 This, that;
d8a83dd3 2238 register Pid_t pid;
79072805 2239 SV *sv;
1738f5c4 2240 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2241 I32 did_pipes = 0;
2242 int pp[2];
a687059c 2243
45bc9206 2244 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2245#ifdef OS2
2246 if (doexec) {
2247 return my_syspopen(cmd,mode);
2248 }
2249#endif
8ac85365
NIS
2250 This = (*mode == 'w');
2251 that = !This;
3280af22 2252 if (doexec && PL_tainting) {
bbce6d69
PP
2253 taint_env();
2254 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2255 }
c2267164
IZ
2256 if (PerlProc_pipe(p) < 0)
2257 return Nullfp;
e446cec8
IZ
2258 if (doexec && PerlProc_pipe(pp) >= 0)
2259 did_pipes = 1;
a687059c
LW
2260 while ((pid = (doexec?vfork():fork())) < 0) {
2261 if (errno != EAGAIN) {
6ad3d225 2262 PerlLIO_close(p[This]);
e446cec8
IZ
2263 if (did_pipes) {
2264 PerlLIO_close(pp[0]);
2265 PerlLIO_close(pp[1]);
2266 }
a687059c 2267 if (!doexec)
cea2e8a9 2268 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2269 return Nullfp;
2270 }
2271 sleep(5);
2272 }
2273 if (pid == 0) {
79072805
LW
2274 GV* tmpgv;
2275
30ac6d9b
GS
2276#undef THIS
2277#undef THAT
a687059c 2278#define THIS that
8ac85365 2279#define THAT This
6ad3d225 2280 PerlLIO_close(p[THAT]);
e446cec8
IZ
2281 if (did_pipes) {
2282 PerlLIO_close(pp[0]);
2283#if defined(HAS_FCNTL) && defined(F_SETFD)
2284 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2285#endif
2286 }
a687059c 2287 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2288 PerlLIO_dup2(p[THIS], *mode == 'r');
2289 PerlLIO_close(p[THIS]);
a687059c 2290 }
4435c477 2291#ifndef OS2
a687059c 2292 if (doexec) {
a0d0e21e 2293#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2294 int fd;
2295
2296#ifndef NOFILE
2297#define NOFILE 20
2298#endif
6b88bc9c 2299 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2300 if (fd != pp[1])
2301 PerlLIO_close(fd);
ae986130 2302#endif
e446cec8 2303 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2304 PerlProc__exit(1);
a687059c 2305 }
4435c477 2306#endif /* defined OS2 */
de3bb511 2307 /*SUPPRESS 560*/
85e6fe83 2308 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2309 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS
2310 PL_forkprocess = 0;
2311 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2312 return Nullfp;
2313#undef THIS
2314#undef THAT
2315 }
62b28dd9 2316 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2317 PerlLIO_close(p[that]);
e446cec8
IZ
2318 if (did_pipes)
2319 PerlLIO_close(pp[1]);
8ac85365 2320 if (p[that] < p[This]) {
6ad3d225
GS
2321 PerlLIO_dup2(p[This], p[that]);
2322 PerlLIO_close(p[This]);
8ac85365 2323 p[This] = p[that];
62b28dd9 2324 }
3280af22 2325 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2326 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2327 SvIVX(sv) = pid;
3280af22 2328 PL_forkprocess = pid;
e446cec8
IZ
2329 if (did_pipes && pid > 0) {
2330 int errkid;
2331 int n = 0, n1;
2332
2333 while (n < sizeof(int)) {
2334 n1 = PerlLIO_read(pp[0],
2335 (void*)(((char*)&errkid)+n),
2336 (sizeof(int)) - n);
2337 if (n1 <= 0)
2338 break;
2339 n += n1;
2340 }
2f96c702
IZ
2341 PerlLIO_close(pp[0]);
2342 did_pipes = 0;
e446cec8
IZ
2343 if (n) { /* Error */
2344 if (n != sizeof(int))
cea2e8a9 2345 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2346 errno = errkid; /* Propagate errno from kid */
2347 return Nullfp;
2348 }
2349 }
2350 if (did_pipes)
2351 PerlLIO_close(pp[0]);
8ac85365 2352 return PerlIO_fdopen(p[This], mode);
a687059c 2353}
7c0587c8 2354#else
55497cff 2355#if defined(atarist) || defined(DJGPP)
7c0587c8 2356FILE *popen();
760ac839 2357PerlIO *
864dbfa3 2358Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2359{
760ac839 2360 /* Needs work for PerlIO ! */
55497cff 2361 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2362 PERL_FLUSHALL_FOR_CHILD;
55497cff 2363 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2364}
2365#endif
2366
2367#endif /* !DOSISH */
a687059c 2368
748a9306 2369#ifdef DUMP_FDS
35ff7856 2370void
864dbfa3 2371Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2372{
2373 int fd;
2374 struct stat tmpstatbuf;
2375
760ac839 2376 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2377 for (fd = 0; fd < 32; fd++) {
6ad3d225 2378 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2379 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2380 }
760ac839 2381 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2382}
35ff7856 2383#endif /* DUMP_FDS */
ae986130 2384
fe14fcc3 2385#ifndef HAS_DUP2
fec02dd3 2386int
ba106d47 2387dup2(int oldfd, int newfd)
a687059c 2388{
a0d0e21e 2389#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2390 if (oldfd == newfd)
2391 return oldfd;
6ad3d225 2392 PerlLIO_close(newfd);
fec02dd3 2393 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2394#else
fc36a67e
PP
2395#define DUP2_MAX_FDS 256
2396 int fdtmp[DUP2_MAX_FDS];
79072805 2397 I32 fdx = 0;
ae986130
LW
2398 int fd;
2399
fe14fcc3 2400 if (oldfd == newfd)
fec02dd3 2401 return oldfd;
6ad3d225 2402 PerlLIO_close(newfd);
fc36a67e 2403 /* good enough for low fd's... */
6ad3d225 2404 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2405 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2406 PerlLIO_close(fd);
fc36a67e
PP
2407 fd = -1;
2408 break;
2409 }
ae986130 2410 fdtmp[fdx++] = fd;
fc36a67e 2411 }
ae986130 2412 while (fdx > 0)
6ad3d225 2413 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2414 return fd;
62b28dd9 2415#endif
a687059c
LW
2416}
2417#endif
2418
ff68c719
PP
2419
2420#ifdef HAS_SIGACTION
2421
2422Sighandler_t
864dbfa3 2423Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2424{
2425 struct sigaction act, oact;
2426
2427 act.sa_handler = handler;
2428 sigemptyset(&act.sa_mask);
2429 act.sa_flags = 0;
2430#ifdef SA_RESTART
2431 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2432#endif
85264bed
CS
2433#ifdef SA_NOCLDWAIT
2434 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2435 act.sa_flags |= SA_NOCLDWAIT;
2436#endif
ff68c719 2437 if (sigaction(signo, &act, &oact) == -1)
36477c24 2438 return SIG_ERR;
ff68c719 2439 else
36477c24 2440 return oact.sa_handler;
ff68c719
PP
2441}
2442
2443Sighandler_t
864dbfa3 2444Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2445{
2446 struct sigaction oact;
2447
2448 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2449 return SIG_ERR;
2450 else
2451 return oact.sa_handler;
2452}
2453
2454int
864dbfa3 2455Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2456{
2457 struct sigaction act;
2458
2459 act.sa_handler = handler;
2460 sigemptyset(&act.sa_mask);
2461 act.sa_flags = 0;
2462#ifdef SA_RESTART
2463 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2464#endif
85264bed
CS
2465#ifdef SA_NOCLDWAIT
2466 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2467 act.sa_flags |= SA_NOCLDWAIT;
2468#endif
ff68c719
PP
2469 return sigaction(signo, &act, save);
2470}
2471
2472int
864dbfa3 2473Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2474{
2475 return sigaction(signo, save, (struct sigaction *)NULL);
2476}
2477
2478#else /* !HAS_SIGACTION */
2479
2480Sighandler_t
864dbfa3 2481Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2482{
6ad3d225 2483 return PerlProc_signal(signo, handler);
ff68c719
PP
2484}
2485
2486static int sig_trapped;
2487
2488static
2489Signal_t
4e35701f 2490sig_trap(int signo)
ff68c719
PP
2491{
2492 sig_trapped++;
2493}
2494
2495Sighandler_t
864dbfa3 2496Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2497{
2498 Sighandler_t oldsig;
2499
2500 sig_trapped = 0;
6ad3d225
GS
2501 oldsig = PerlProc_signal(signo, sig_trap);
2502 PerlProc_signal(signo, oldsig);
ff68c719 2503 if (sig_trapped)
6ad3d225 2504 PerlProc_kill(getpid(), signo);
ff68c719
PP
2505 return oldsig;
2506}
2507
2508int
864dbfa3 2509Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2510{
6ad3d225 2511 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2512 return (*save == SIG_ERR) ? -1 : 0;
2513}
2514
2515int
864dbfa3 2516Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2517{
6ad3d225 2518 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2519}
2520
2521#endif /* !HAS_SIGACTION */
2522
5f05dabc 2523 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2524#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2525I32
864dbfa3 2526Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2527{
ff68c719 2528 Sigsave_t hstat, istat, qstat;
a687059c 2529 int status;
a0d0e21e 2530 SV **svp;
d8a83dd3
JH
2531 Pid_t pid;
2532 Pid_t pid2;
03136e13
CS
2533 bool close_failed;
2534 int saved_errno;
2535#ifdef VMS
2536 int saved_vaxc_errno;
2537#endif
22fae026
TM
2538#ifdef WIN32
2539 int saved_win32_errno;
2540#endif
a687059c 2541
3280af22 2542 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2543 pid = SvIVX(*svp);
a0d0e21e 2544 SvREFCNT_dec(*svp);
3280af22 2545 *svp = &PL_sv_undef;
ddcf38b7
IZ
2546#ifdef OS2
2547 if (pid == -1) { /* Opened by popen. */
2548 return my_syspclose(ptr);
2549 }
2550#endif
03136e13
CS
2551 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2552 saved_errno = errno;
2553#ifdef VMS
2554 saved_vaxc_errno = vaxc$errno;
2555#endif
22fae026
TM
2556#ifdef WIN32
2557 saved_win32_errno = GetLastError();
2558#endif
03136e13 2559 }
7c0587c8 2560#ifdef UTS
6ad3d225 2561 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2562#endif
ff68c719
PP
2563 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2564 rsignal_save(SIGINT, SIG_IGN, &istat);
2565 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2566 do {
1d3434b8
GS
2567 pid2 = wait4pid(pid, &status, 0);
2568 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2569 rsignal_restore(SIGHUP, &hstat);
2570 rsignal_restore(SIGINT, &istat);
2571 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2572 if (close_failed) {
2573 SETERRNO(saved_errno, saved_vaxc_errno);
2574 return -1;
2575 }
1d3434b8 2576 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2577}
4633a7c4
LW
2578#endif /* !DOSISH */
2579
2c2d71f5 2580#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2581I32
d8a83dd3 2582Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2583{
79072805
LW
2584 SV *sv;
2585 SV** svp;
fc36a67e 2586 char spid[TYPE_CHARS(int)];
20188a90
LW
2587
2588 if (!pid)
2589 return -1;
20188a90
LW
2590 if (pid > 0) {
2591 sprintf(spid, "%d", pid);
3280af22
NIS
2592 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2593 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2594 *statusp = SvIVX(*svp);
3280af22 2595 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2596 return pid;
2597 }
2598 }
2599 else {
79072805 2600 HE *entry;
20188a90 2601
3280af22
NIS
2602 hv_iterinit(PL_pidstatus);
2603 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2604 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2605 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2606 *statusp = SvIVX(sv);
20188a90 2607 sprintf(spid, "%d", pid);
3280af22 2608 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2609 return pid;
2610 }
2611 }
79072805 2612#ifdef HAS_WAITPID
367f3c24
IZ
2613# ifdef HAS_WAITPID_RUNTIME
2614 if (!HAS_WAITPID_RUNTIME)
2615 goto hard_way;
2616# endif
f55ee38a 2617 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2618#endif
2619#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2620 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2621#endif
2622#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2623 hard_way:
a0d0e21e
LW
2624 {
2625 I32 result;
2626 if (flags)
cea2e8a9 2627 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2628 else {
76e3520e 2629 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2630 pidgone(result,*statusp);
2631 if (result < 0)
2632 *statusp = -1;
2633 }
2634 return result;
a687059c
LW
2635 }
2636#endif
a687059c 2637}
2d7a9237 2638#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2639
7c0587c8 2640void
de3bb511 2641/*SUPPRESS 590*/
d8a83dd3 2642Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2643{
79072805 2644 register SV *sv;
fc36a67e 2645 char spid[TYPE_CHARS(int)];
a687059c 2646
20188a90 2647 sprintf(spid, "%d", pid);
3280af22 2648 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2649 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2650 SvIVX(sv) = status;
20188a90 2651 return;
a687059c
LW
2652}
2653
55497cff 2654#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2655int pclose();
ddcf38b7
IZ
2656#ifdef HAS_FORK
2657int /* Cannot prototype with I32
2658 in os2ish.h. */
ba106d47 2659my_syspclose(PerlIO *ptr)
ddcf38b7 2660#else
79072805 2661I32
864dbfa3 2662Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2663#endif
a687059c 2664{
760ac839
LW
2665 /* Needs work for PerlIO ! */
2666 FILE *f = PerlIO_findFILE(ptr);
2667 I32 result = pclose(f);
933fea7f
GS
2668#if defined(DJGPP)
2669 result = (result << 8) & 0xff00;
2670#endif
760ac839
LW
2671 PerlIO_releaseFILE(ptr,f);
2672 return result;
a687059c 2673}
7c0587c8 2674#endif
9f68db38
LW
2675
2676void
864dbfa3 2677Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2678{
79072805 2679 register I32 todo;
08105a92 2680 register const char *frombase = from;
9f68db38
LW
2681
2682 if (len == 1) {
08105a92 2683 register const char c = *from;
9f68db38 2684 while (count-- > 0)
5926133d 2685 *to++ = c;
9f68db38
LW
2686 return;
2687 }
2688 while (count-- > 0) {
2689 for (todo = len; todo > 0; todo--) {
2690 *to++ = *from++;
2691 }
2692 from = frombase;
2693 }
2694}
0f85fab0 2695
463ee0b2 2696U32
65202027 2697Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2698{
2699 long along;
2700
27e2fb84 2701#if CASTFLAGS & 2
34de22dd
LW
2702# define BIGDOUBLE 2147483648.0
2703 if (f >= BIGDOUBLE)
2704 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2705#endif
0f85fab0
LW
2706 if (f >= 0.0)
2707 return (unsigned long)f;
2708 along = (long)f;
2709 return (unsigned long)along;
2710}
ed6116ce 2711# undef BIGDOUBLE
5d94fbed 2712
5d94fbed
AD
2713/* Unfortunately, on some systems the cast_uv() function doesn't
2714 work with the system-supplied definition of ULONG_MAX. The
2715 comparison (f >= ULONG_MAX) always comes out true. It must be a
2716 problem with the compiler constant folding.
2717
2718 In any case, this workaround should be fine on any two's complement
2719 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2720 ccflags.
2721 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2722*/
1eb770ff
PP
2723
2724/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2725 of LONG_(MIN/MAX).
2726 -- Kenneth Albanowski <kjahds@kjahds.com>
2727*/
2728
20cec16a
PP
2729#ifndef MY_UV_MAX
2730# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2731#endif
2732
ed6116ce 2733I32
65202027 2734Perl_cast_i32(pTHX_ NV f)
ed6116ce 2735{
20cec16a
PP
2736 if (f >= I32_MAX)
2737 return (I32) I32_MAX;
2738 if (f <= I32_MIN)
2739 return (I32) I32_MIN;
ed6116ce
LW
2740 return (I32) f;
2741}
a0d0e21e
LW
2742
2743IV
65202027 2744Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2745{
25da4f38
IZ
2746 if (f >= IV_MAX) {
2747 UV uv;
2748
65202027 2749 if (f >= (NV)UV_MAX)
25da4f38
IZ
2750 return (IV) UV_MAX;
2751 uv = (UV) f;
2752 return (IV)uv;
2753 }
20cec16a
PP
2754 if (f <= IV_MIN)
2755 return (IV) IV_MIN;
a0d0e21e
LW
2756 return (IV) f;
2757}
5d94fbed
AD
2758
2759UV
65202027 2760Perl_cast_uv(pTHX_ NV f)
5d94fbed 2761{
20cec16a
PP
2762 if (f >= MY_UV_MAX)
2763 return (UV) MY_UV_MAX;
25da4f38
IZ
2764 if (f < 0) {
2765 IV iv;
2766
2767 if (f < IV_MIN)
2768 return (UV)IV_MIN;
2769 iv = (IV) f;
2770 return (UV) iv;
2771 }
5d94fbed
AD
2772 return (UV) f;
2773}
2774
fe14fcc3 2775#ifndef HAS_RENAME
79072805 2776I32
864dbfa3 2777Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2778{
93a17b20
LW
2779 char *fa = strrchr(a,'/');
2780 char *fb = strrchr(b,'/');
62b28dd9
LW
2781 struct stat tmpstatbuf1;
2782 struct stat tmpstatbuf2;
46fc3d4c 2783 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2784
2785 if (fa)
2786 fa++;
2787 else
2788 fa = a;
2789 if (fb)
2790 fb++;
2791 else
2792 fb = b;
2793 if (strNE(a,b))
2794 return FALSE;
2795 if (fa == a)
46fc3d4c 2796 sv_setpv(tmpsv, ".");
62b28dd9 2797 else
46fc3d4c 2798 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2799 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2800 return FALSE;
2801 if (fb == b)
46fc3d4c 2802 sv_setpv(tmpsv, ".");
62b28dd9 2803 else
46fc3d4c 2804 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2805 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2806 return FALSE;
2807 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2808 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2809}
fe14fcc3
LW
2810#endif /* !HAS_RENAME */
2811
9e24b6e2 2812NV
864dbfa3 2813Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2814{
2815 register char *s = start;
9e24b6e2
JH
2816 register NV rnv = 0.0;
2817 register UV ruv = 0;
252aa082 2818 register bool seenb = FALSE;
9e24b6e2 2819 register bool overflowed = FALSE;
252aa082
JH
2820
2821 for (; len-- && *s; s++) {
2822 if (!(*s == '0' || *s == '1')) {
2823 if (*s == '_')
9e24b6e2 2824 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2825 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
2826 /* Disallow 0bbb0b0bbb... */
2827 seenb = TRUE;
252aa082
JH
2828 continue;
2829 }
2830 else {
2831 dTHR;
627300f0
JH
2832 if (ckWARN(WARN_DIGIT))
2833 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2834 "Illegal binary digit '%c' ignored", *s);
2835 break;
2836 }
9e24b6e2
JH
2837 }
2838 if (!overflowed) {
2839 register UV xuv = ruv << 1;
2840
2841 if ((xuv >> 1) != ruv) {
2842 dTHR;
2843 overflowed = TRUE;
2844 rnv = (NV) ruv;
627300f0
JH
2845 if (ckWARN_d(WARN_OVERFLOW))
2846 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2847 "Integer overflow in binary number");
2848 } else
2849 ruv = xuv | (*s - '0');
2850 }
2851 if (overflowed) {
2852 rnv *= 2;
2853 /* If an NV has not enough bits in its mantissa to
2854 * represent an UV this summing of small low-order numbers
2855 * is a waste of time (because the NV cannot preserve
2856 * the low-order bits anyway): we could just remember when
2857 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2858 * right amount. */
9e24b6e2 2859 rnv += (*s - '0');
f248d071 2860 }
4f19785b 2861 }
9e24b6e2
JH
2862 if (!overflowed)
2863 rnv = (NV) ruv;
893fe2c2 2864 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2865#if UVSIZE > 4
893fe2c2
JH
2866 || (!overflowed && ruv > 0xffffffff )
2867#endif
2868 ) {
252aa082 2869 dTHR;
627300f0
JH
2870 if (ckWARN(WARN_PORTABLE))
2871 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2872 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
2873 }
2874 *retlen = s - start;
9e24b6e2 2875 return rnv;
4f19785b 2876}
9e24b6e2
JH
2877
2878NV
864dbfa3 2879Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2880{
2881 register char *s = start;
9e24b6e2
JH
2882 register NV rnv = 0.0;
2883 register UV ruv = 0;
2884 register bool overflowed = FALSE;
252aa082
JH
2885
2886 for (; len-- && *s; s++) {
2887 if (!(*s >= '0' && *s <= '7')) {
2888 if (*s == '_')
9e24b6e2 2889 continue; /* Note: does not check for __ and the like. */
252aa082 2890 else {
f84f607d
JH
2891 /* Allow \octal to work the DWIM way (that is, stop scanning
2892 * as soon as non-octal characters are seen, complain only iff
2893 * someone seems to want to use the digits eight and nine). */
252aa082
JH
2894 if (*s == '8' || *s == '9') {
2895 dTHR;
627300f0
JH
2896 if (ckWARN(WARN_DIGIT))
2897 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2898 "Illegal octal digit '%c' ignored", *s);
2899 }
2900 break;
2901 }
55497cff 2902 }
9e24b6e2 2903 if (!overflowed) {
893fe2c2 2904 register UV xuv = ruv << 3;
9e24b6e2
JH
2905
2906 if ((xuv >> 3) != ruv) {
2907 dTHR;
2908 overflowed = TRUE;
2909 rnv = (NV) ruv;
627300f0
JH
2910 if (ckWARN_d(WARN_OVERFLOW))
2911 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2912 "Integer overflow in octal number");
2913 } else
2914 ruv = xuv | (*s - '0');
2915 }
2916 if (overflowed) {
2917 rnv *= 8.0;
2918 /* If an NV has not enough bits in its mantissa to
2919 * represent an UV this summing of small low-order numbers
2920 * is a waste of time (because the NV cannot preserve
2921 * the low-order bits anyway): we could just remember when
2922 * did we overflow and in the end just multiply rnv by the
2923 * right amount of 8-tuples. */
2924 rnv += (NV)(*s - '0');
2925 }
fe14fcc3 2926 }
9e24b6e2
JH
2927 if (!overflowed)
2928 rnv = (NV) ruv;
893fe2c2 2929 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2930#if UVSIZE > 4
893fe2c2
JH
2931 || (!overflowed && ruv > 0xffffffff )
2932#endif
2933 ) {
d008e5eb 2934 dTHR;
627300f0
JH
2935 if (ckWARN(WARN_PORTABLE))
2936 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2937 "Octal number > 037777777777 non-portable");
d008e5eb 2938 }
fe14fcc3 2939 *retlen = s - start;
9e24b6e2 2940 return rnv;
fe14fcc3
LW
2941}
2942
9e24b6e2 2943NV
864dbfa3 2944Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2945{
2946 register char *s = start;
9e24b6e2
JH
2947 register NV rnv = 0.0;
2948 register UV ruv = 0;
252aa082 2949 register bool seenx = FALSE;
9e24b6e2 2950 register bool overflowed = FALSE;
9e24b6e2 2951 char *hexdigit;
fe14fcc3 2952
9e24b6e2
JH
2953 for (; len-- && *s; s++) {
2954 hexdigit = strchr((char *) PL_hexdigit, *s);
2955 if (!hexdigit) {
2956 if (*s == '_')
2957 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2958 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH
2959 /* Disallow 0xxx0x0xxx... */
2960 seenx = TRUE;
252aa082
JH
2961 continue;
2962 }
a0ed51b3 2963 else {
d008e5eb 2964 dTHR;
627300f0
JH
2965 if (ckWARN(WARN_DIGIT))
2966 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2967 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
2968 break;
2969 }
2970 }
9e24b6e2
JH
2971 if (!overflowed) {
2972 register UV xuv = ruv << 4;
2973
2974 if ((xuv >> 4) != ruv) {
2975 dTHR;
2976 overflowed = TRUE;
2977 rnv = (NV) ruv;
627300f0
JH
2978 if (ckWARN_d(WARN_OVERFLOW))
2979 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2980 "Integer overflow in hexadecimal number");
2981 } else
2982 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2983 }
2984 if (overflowed) {
2985 rnv *= 16.0;
2986 /* If an NV has not enough bits in its mantissa to
2987 * represent an UV this summing of small low-order numbers
2988 * is a waste of time (because the NV cannot preserve
2989 * the low-order bits anyway): we could just remember when
2990 * did we overflow and in the end just multiply rnv by the
2991 * right amount of 16-tuples. */
2992 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2993 }
6ff81951 2994 }
9e24b6e2
JH
2995 if (!overflowed)
2996 rnv = (NV) ruv;
893fe2c2 2997 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2998#if UVSIZE > 4
893fe2c2
JH
2999 || (!overflowed && ruv > 0xffffffff )
3000#endif
3001 ) {
252aa082 3002 dTHR;
627300f0
JH
3003 if (ckWARN(WARN_PORTABLE))
3004 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
3005 "Hexadecimal number > 0xffffffff non-portable");
3006 }
fe14fcc3 3007 *retlen = s - start;
9e24b6e2 3008 return rnv;
fe14fcc3 3009}
760ac839 3010
491527d0 3011char*
864dbfa3 3012Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
3013{
3014 dTHR;
3015 char *xfound = Nullch;
3016 char *xfailed = Nullch;
0f31cffe 3017 char tmpbuf[MAXPATHLEN];
491527d0
GS
3018 register char *s;
3019 I32 len;
3020 int retval;
3021#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3022# define SEARCH_EXTS ".bat", ".cmd", NULL
3023# define MAX_EXT_LEN 4
3024#endif
3025#ifdef OS2
3026# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3027# define MAX_EXT_LEN 4
3028#endif
3029#ifdef VMS
3030# define SEARCH_EXTS ".pl", ".com", NULL
3031# define MAX_EXT_LEN 4
3032#endif
3033 /* additional extensions to try in each dir if scriptname not found */
3034#ifdef SEARCH_EXTS
3035 char *exts[] = { SEARCH_EXTS };
3036 char **ext = search_ext ? search_ext : exts;
3037 int extidx = 0, i = 0;
3038 char *curext = Nullch;
3039#else
3040# define MAX_EXT_LEN 0
3041#endif
3042
3043 /*
3044 * If dosearch is true and if scriptname does not contain path
3045 * delimiters, search the PATH for scriptname.
3046 *
3047 * If SEARCH_EXTS is also defined, will look for each
3048 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3049 * while searching the PATH.
3050 *
3051 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3052 * proceeds as follows:
3053 * If DOSISH or VMSISH:
3054 * + look for ./scriptname{,.foo,.bar}
3055 * + search the PATH for scriptname{,.foo,.bar}
3056 *
3057 * If !DOSISH:
3058 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3059 * this will not look in '.' if it's not in the PATH)
3060 */
84486fc6 3061 tmpbuf[0] = '\0';
491527d0
GS
3062
3063#ifdef VMS
3064# ifdef ALWAYS_DEFTYPES
3065 len = strlen(scriptname);
3066 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3067 int hasdir, idx = 0, deftypes = 1;
3068 bool seen_dot = 1;
3069
3070 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3071# else
3072 if (dosearch) {
3073 int hasdir, idx = 0, deftypes = 1;
3074 bool seen_dot = 1;
3075
3076 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3077# endif
3078 /* The first time through, just add SEARCH_EXTS to whatever we
3079 * already have, so we can check for default file types. */
3080 while (deftypes ||
84486fc6 3081 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3082 {
3083 if (deftypes) {
3084 deftypes = 0;
84486fc6 3085 *tmpbuf = '\0';
491527d0 3086 }
84486fc6
GS
3087 if ((strlen(tmpbuf) + strlen(scriptname)
3088 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3089 continue; /* don't search dir with too-long name */
84486fc6 3090 strcat(tmpbuf, scriptname);
491527d0
GS
3091#else /* !VMS */
3092
3093#ifdef DOSISH
3094 if (strEQ(scriptname, "-"))
3095 dosearch = 0;
3096 if (dosearch) { /* Look in '.' first. */
3097 char *cur = scriptname;
3098#ifdef SEARCH_EXTS
3099 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3100 while (ext[i])
3101 if (strEQ(ext[i++],curext)) {
3102 extidx = -1; /* already has an ext */
3103 break;
3104 }
3105 do {
3106#endif
3107 DEBUG_p(PerlIO_printf(Perl_debug_log,
3108 "Looking for %s\n",cur));
017f25f1
IZ
3109 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3110 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3111 dosearch = 0;
3112 scriptname = cur;
3113#ifdef SEARCH_EXTS
3114 break;
3115#endif
3116 }
3117#ifdef SEARCH_EXTS
3118 if (cur == scriptname) {
3119 len = strlen(scriptname);
84486fc6 3120 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3121 break;
84486fc6 3122 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3123 }
3124 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3125 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3126#endif
3127 }
3128#endif
3129
3130 if (dosearch && !strchr(scriptname, '/')
3131#ifdef DOSISH
3132 && !strchr(scriptname, '\\')
3133#endif
3134 && (s = PerlEnv_getenv("PATH"))) {
3135 bool seen_dot = 0;
3136
3280af22
NIS
3137 PL_bufend = s + strlen(s);
3138 while (s < PL_bufend) {
491527d0
GS
3139#if defined(atarist) || defined(DOSISH)
3140 for (len = 0; *s
3141# ifdef atarist
3142 && *s != ','
3143# endif
3144 && *s != ';'; len++, s++) {
84486fc6
GS
3145 if (len < sizeof tmpbuf)
3146 tmpbuf[len] = *s;
491527d0 3147 }
84486fc6
GS
3148 if (len < sizeof tmpbuf)
3149 tmpbuf[len] = '\0';
491527d0 3150#else /* ! (atarist || DOSISH) */
3280af22 3151 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3152 ':',
3153 &len);
3154#endif /* ! (atarist || DOSISH) */
3280af22 3155 if (s < PL_bufend)
491527d0 3156 s++;
84486fc6 3157 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
3158 continue; /* don't search dir with too-long name */
3159 if (len
61ae2fbf 3160#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3161 && tmpbuf[len - 1] != '/'
3162 && tmpbuf[len - 1] != '\\'
491527d0
GS
3163#endif
3164 )
84486fc6
GS
3165 tmpbuf[len++] = '/';
3166 if (len == 2 && tmpbuf[0] == '.')
491527d0 3167 seen_dot = 1;
84486fc6 3168 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3169#endif /* !VMS */
3170
3171#ifdef SEARCH_EXTS
84486fc6 3172 len = strlen(tmpbuf);
491527d0
GS
3173 if (extidx > 0) /* reset after previous loop */
3174 extidx = 0;
3175 do {
3176#endif
84486fc6 3177 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3178 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3179 if (S_ISDIR(PL_statbuf.st_mode)) {
3180 retval = -1;
3181 }
491527d0
GS
3182#ifdef SEARCH_EXTS
3183 } while ( retval < 0 /* not there */
3184 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3185 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3186 );
3187#endif
3188 if (retval < 0)
3189 continue;
3280af22
NIS
3190 if (S_ISREG(PL_statbuf.st_mode)
3191 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3192#ifndef DOSISH
3280af22 3193 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3194#endif
3195 )
3196 {
84486fc6 3197 xfound = tmpbuf; /* bingo! */
491527d0
GS
3198 break;
3199 }
3200 if (!xfailed)
84486fc6 3201 xfailed = savepv(tmpbuf);
491527d0
GS
3202 }
3203#ifndef DOSISH
017f25f1
IZ
3204 if (!xfound && !seen_dot && !xfailed &&
3205 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3206 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3207#endif
3208 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3209 if (!xfound) {
3210 if (flags & 1) { /* do or die? */
cea2e8a9 3211 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3212 (xfailed ? "execute" : "find"),
3213 (xfailed ? xfailed : scriptname),
3214 (xfailed ? "" : " on PATH"),
3215 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3216 }
3217 scriptname = Nullch;
3218 }
491527d0
GS
3219 if (xfailed)
3220 Safefree(xfailed);
3221 scriptname = xfound;
3222 }
9ccb31f9 3223 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3224}
3225
3226
11343788 3227#ifdef USE_THREADS
12ca11f6
MB
3228#ifdef FAKE_THREADS
3229/* Very simplistic scheduler for now */
3230void
3231schedule(void)
3232{
c7848ba1 3233 thr = thr->i.next_run;
12ca11f6
MB
3234}
3235
3236void
864dbfa3 3237Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3238{
3239 *cp = 0;
3240}
3241
3242void
864dbfa3 3243Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3244{
51dd5992 3245 perl_os_thread t;
12ca11f6
MB
3246 perl_cond cond = *cp;
3247
3248 if (!cond)
3249 return;
3250 t = cond->thread;
3251 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3252 t->i.next_run = thr->i.next_run;
3253 thr->i.next_run->i.prev_run = t;
3254 t->i.prev_run = thr;
3255 thr->i.next_run = t;
3256 thr->i.wait_queue = 0;
12ca11f6
MB
3257 /* Remove from the wait queue */
3258 *cp = cond->next;
3259 Safefree(cond);
3260}
3261
3262void
864dbfa3 3263Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3264{
51dd5992 3265 perl_os_thread t;
12ca11f6
MB
3266 perl_cond cond, cond_next;
3267
3268 for (cond = *cp; cond; cond = cond_next) {
3269 t = cond->thread;
3270 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3271 t->i.next_run = thr->i.next_run;
3272 thr->i.next_run->i.prev_run = t;
3273 t->i.prev_run = thr;
3274 thr->i.next_run = t;
3275 thr->i.wait_queue = 0;
12ca11f6
MB
3276 /* Remove from the wait queue */
3277 cond_next = cond->next;
3278 Safefree(cond);
3279 }
3280 *cp = 0;
3281}
3282
3283void
864dbfa3 3284Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3285{
3286 perl_cond cond;
3287
c7848ba1 3288 if (thr->i.next_run == thr)
cea2e8a9 3289 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3290
0f15f207 3291 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3292 cond->thread = thr;
3293 cond->next = *cp;
3294 *cp = cond;
c7848ba1 3295 thr->i.wait_queue = cond;
12ca11f6 3296 /* Remove ourselves from runnable queue */
c7848ba1
MB
3297 thr->i.next_run->i.prev_run = thr->i.prev_run;
3298 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3299}
3300#endif /* FAKE_THREADS */
3301
0d85d877 3302#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3303struct perl_thread *
864dbfa3 3304Perl_getTHR(pTHX)
11343788
MB
3305{
3306 pthread_addr_t t;
3307
6b88bc9c 3308 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3309 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3310 return (struct perl_thread *) t;
11343788 3311}
0d85d877 3312#endif
f93b4edd
MB
3313
3314MAGIC *
864dbfa3 3315Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3316{
3317 MAGIC *mg;
3318
3319 SvUPGRADE(sv, SVt_PVMG);
3320 mg = mg_find(sv, 'm');
3321 if (!mg) {
3322 condpair_t *cp;
3323
3324 New(53, cp, 1, condpair_t);
3325 MUTEX_INIT(&cp->mutex);
3326 COND_INIT(&cp->owner_cond);
3327 COND_INIT(&cp->cond);
3328 cp->owner = 0;
28a8573f 3329 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3330 mg = mg_find(sv, 'm');
3331 if (mg) {
3332 /* someone else beat us to initialising it */
28a8573f 3333 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3334 MUTEX_DESTROY(&cp->mutex);
3335 COND_DESTROY(&cp->owner_cond);
3336 COND_DESTROY(&cp->cond);
3337 Safefree(cp);
3338 }
3339 else {
3340 sv_magic(sv, Nullsv, 'm', 0, 0);
3341 mg = SvMAGIC(sv);
3342 mg->mg_ptr = (char *)cp;
565764a8 3343 mg->mg_len = sizeof(cp);
28a8573f 3344 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3345 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3346 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3347 }
3348 }
3349 return mg;
3350}
a863c7d1
MB
3351
3352/*
199100c8
MB
3353 * Make a new perl thread structure using t as a prototype. Some of the
3354 * fields for the new thread are copied from the prototype thread, t,
3355 * so t should not be running in perl at the time this function is
3356 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3357 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3358 */
52e1cb5e 3359struct perl_thread *
864dbfa3 3360Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3361{
c5be433b 3362#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3363 struct perl_thread *thr;
cea2e8a9 3364#endif
a863c7d1 3365 SV *sv;
199100c8
MB
3366 SV **svp;
3367 I32 i;
3368
79cb57f6 3369 sv = newSVpvn("", 0);
52e1cb5e
JH
3370 SvGROW(sv, sizeof(struct perl_thread) + 1);
3371 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3372 thr = (Thread) SvPVX(sv);
949ced2d 3373#ifdef DEBUGGING
52e1cb5e 3374 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3375 PL_markstack = 0;
3376 PL_scopestack = 0;
3377 PL_savestack = 0;
3378 PL_retstack = 0;
3379 PL_dirty = 0;
3380 PL_localizing = 0;
949ced2d
GS
3381 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3382#else
3383 Zero(thr, 1, struct perl_thread);
3384#endif
199100c8 3385
0b94c7bb 3386 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3387
199100c8 3388 thr->oursv = sv;
cea2e8a9 3389 init_stacks();
a863c7d1 3390
533c011a 3391 PL_curcop = &PL_compiling;
c5be433b 3392 thr->interp = t->interp;
199100c8 3393 thr->cvcache = newHV();
54b9620d 3394 thr->threadsv = newAV();
a863c7d1 3395 thr->specific = newAV();
79cb57f6 3396 thr->errsv = newSVpvn("", 0);
38a03e6e 3397 thr->errhv = newHV();
a863c7d1
MB
3398 thr->flags = THRf_R_JOINABLE;
3399 MUTEX_INIT(&thr->mutex);
199100c8 3400
d55594ae
GS
3401 /* top_env needs to be non-zero. It points to an area
3402 in which longjmp() stuff is stored, as C callstack
3403 info there at least is thread specific this has to
3404 be per-thread. Otherwise a 'die' in a thread gives
3405 that thread the C stack of last thread to do an eval {}!
3406 See comments in scope.h
3407 Initialize top entry (as in perl.c for main thread)
3408 */
533c011a
NIS
3409 PL_start_env.je_prev = NULL;
3410 PL_start_env.je_ret = -1;
3411 PL_start_env.je_mustcatch = TRUE;
3412 PL_top_env = &PL_start_env;
3413
faef0170 3414 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3415 PL_restartop = 0;
3416
b099ddc0 3417 PL_statname = NEWSV(66,0);
5a844595 3418 PL_errors = newSVpvn("", 0);
b099ddc0 3419 PL_maxscream = -1;
0b94c7bb
GS
3420 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3421 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3422 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3423 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3424 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3425 PL_regindent = 0;
3426 PL_reginterp_cnt = 0;
3427 PL_lastscream = Nullsv;
3428 PL_screamfirst = 0;
3429 PL_screamnext = 0;
3430 PL_reg_start_tmp = 0;
3431 PL_reg_start_tmpl = 0;
14ed4b74 3432 PL_reg_poscache = Nullch;
b099ddc0
GS
3433
3434 /* parent thread's data needs to be locked while we make copy */
3435 MUTEX_LOCK(&t->mutex);
3436
312caa8e
CS
3437 PL_protect = t->Tprotect;
3438
b099ddc0
GS
3439 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3440 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3441 PL_curstash = t->Tcurstash; /* always be set to main? */
3442
6b88bc9c 3443 PL_tainted = t->Ttainted;
84fee439
NIS
3444 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3445 PL_nrs = newSVsv(t->Tnrs);
3446 PL_rs = SvREFCNT_inc(PL_nrs);
3447 PL_last_in_gv = Nullgv;
3448 PL_ofslen = t->Tofslen;
3449 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3450 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3451 PL_chopset = t->Tchopset;
3452 PL_formtarget = newSVsv(t->Tformtarget);
3453 PL_bodytarget = newSVsv(t->Tbodytarget);
3454 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3455
54b9620d
MB
3456 /* Initialise all per-thread SVs that the template thread used */
3457 svp = AvARRAY(t->threadsv);
93965878 3458 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3459 if (*svp && *svp != &PL_sv_undef) {
199100c8 3460 SV *sv = newSVsv(*svp);
54b9620d 3461 av_store(thr->threadsv, i, sv);
533c011a 3462 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3463 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3464 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
3465 }
3466 }
940cb80d 3467 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3468
533c011a
NIS
3469 MUTEX_LOCK(&PL_threads_mutex);
3470 PL_nthreads++;
3471 thr->tid = ++PL_threadnum;
199100c8
MB
3472 thr->next = t->next;
3473 thr->prev = t;
3474 t->next = thr;
3475 thr->next->prev = thr;
533c011a 3476 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3477
b099ddc0
GS
3478 /* done copying parent's state */
3479 MUTEX_UNLOCK(&t->mutex);
3480
a863c7d1 3481#ifdef HAVE_THREAD_INTERN
4f63d024 3482 Perl_init_thread_intern(thr);
a863c7d1 3483#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3484 return thr;
3485}
11343788 3486#endif /* USE_THREADS */
760ac839
LW
3487
3488#ifdef HUGE_VAL
3489/*
3490 * This hack is to force load of "huge" support from libm.a
3491 * So it is in perl for (say) POSIX to use.
3492 * Needed for SunOS with Sun's 'acc' for example.
3493 */
65202027 3494NV
8ac85365 3495Perl_huge(void)
760ac839
LW
3496{
3497 return HUGE_VAL;
3498}
3499#endif
4e35701f 3500
22239a37
NIS
3501#ifdef PERL_GLOBAL_STRUCT
3502struct perl_vars *
864dbfa3 3503Perl_GetVars(pTHX)
22239a37 3504{
533c011a 3505 return &PL_Vars;
22239a37 3506}
31fb1209
NIS
3507#endif
3508
3509char **
864dbfa3 3510Perl_get_op_names(pTHX)
31fb1209 3511{
22c35a8c 3512 return PL_op_name;
31fb1209
NIS
3513}
3514
3515char **
864dbfa3 3516Perl_get_op_descs(pTHX)
31fb1209 3517{
22c35a8c 3518 return PL_op_desc;
31fb1209 3519}
9e6b2b00
GS
3520
3521char *
864dbfa3 3522Perl_get_no_modify(pTHX)
9e6b2b00 3523{
22c35a8c 3524 return (char*)PL_no_modify;
9e6b2b00
GS
3525}
3526
3527U32 *
864dbfa3 3528Perl_get_opargs(pTHX)
9e6b2b00 3529{
22c35a8c 3530 return PL_opargs;
9e6b2b00 3531}
51aa15f3 3532
0cb96387
GS
3533PPADDR_t*
3534Perl_get_ppaddr(pTHX)
3535{
3536 return &PL_ppaddr;
3537}
3538
a6c40364
GS
3539#ifndef HAS_GETENV_LEN
3540char *
864dbfa3 3541Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS
3542{
3543 char *env_trans = PerlEnv_getenv(env_elem);
3544 if (env_trans)
3545 *len = strlen(env_trans);
3546 return env_trans;
f675dbe5
CB
3547}
3548#endif
3549
dc9e4912
GS
3550
3551MGVTBL*
864dbfa3 3552Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS
3553{
3554 MGVTBL* result = Null(MGVTBL*);
3555
3556 switch(vtbl_id) {
3557 case want_vtbl_sv:
3558 result = &PL_vtbl_sv;
3559 break;
3560 case want_vtbl_env:
3561 result = &PL_vtbl_env;
3562 break;
3563 case want_vtbl_envelem:
3564 result = &PL_vtbl_envelem;
3565 break;
3566 case want_vtbl_sig:
3567 result = &PL_vtbl_sig;
3568 break;
3569 case want_vtbl_sigelem:
3570 result = &PL_vtbl_sigelem;
3571 break;
3572 case want_vtbl_pack:
3573 result = &PL_vtbl_pack;
3574 break;
3575 case want_vtbl_packelem:
3576 result = &PL_vtbl_packelem;
3577 break;
3578 case want_vtbl_dbline:
3579 result = &PL_vtbl_dbline;
3580 break;
3581 case want_vtbl_isa:
3582 result = &PL_vtbl_isa;
3583 break;
3584 case want_vtbl_isaelem:
3585 result = &PL_vtbl_isaelem;
3586 break;
3587 case want_vtbl_arylen:
3588 result = &PL_vtbl_arylen;
3589 break;
3590 case want_vtbl_glob:
3591 result = &PL_vtbl_glob;
3592 break;
3593 case want_vtbl_mglob:
3594 result = &PL_vtbl_mglob;
3595 break;
3596 case want_vtbl_nkeys:
3597 result = &PL_vtbl_nkeys;
3598 break;
3599 case want_vtbl_taint:
3600 result = &PL_vtbl_taint;
3601 break;
3602 case want_vtbl_substr:
3603 result = &PL_vtbl_substr;
3604 break;
3605 case want_vtbl_vec:
3606 result = &PL_vtbl_vec;
3607 break;
3608 case want_vtbl_pos:
3609 result = &PL_vtbl_pos;
3610 break;
3611 case want_vtbl_bm:
3612 result = &PL_vtbl_bm;
3613 break;
3614 case want_vtbl_fm:
3615 result = &PL_vtbl_fm;
3616 break;
3617 case want_vtbl_uvar:
3618 result = &PL_vtbl_uvar;
3619 break;
3620#ifdef USE_THREADS
3621 case want_vtbl_mutex:
3622 result = &PL_vtbl_mutex;
3623 break;
3624#endif
3625 case want_vtbl_defelem:
3626 result = &PL_vtbl_defelem;
3627 break;
3628 case want_vtbl_regexp:
3629 result = &PL_vtbl_regexp;
3630 break;
3631 case want_vtbl_regdata:
3632 result = &PL_vtbl_regdata;
3633 break;
3634 case want_vtbl_regdatum:
3635 result = &PL_vtbl_regdatum;
3636 break;
3c90161d 3637#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3638 case want_vtbl_collxfrm:
3639 result = &PL_vtbl_collxfrm;
3640 break;
3c90161d 3641#endif
dc9e4912
GS
3642 case want_vtbl_amagic:
3643 result = &PL_vtbl_amagic;
3644 break;
3645 case want_vtbl_amagicelem:
3646 result = &PL_vtbl_amagicelem;
3647 break;
810b8aa5
GS
3648 case want_vtbl_backref:
3649 result = &PL_vtbl_backref;
3650 break;
dc9e4912
GS
3651 }
3652 return result;
3653}
3654
767df6a1 3655I32
864dbfa3