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a0d0e21e 1/* util.c
a687059c 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
a687059c 4 *
d48672a2
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
64ca3a65 19#ifndef PERL_MICRO
e1dfb34b 20#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 21#include <signal.h>
62b28dd9 22#endif
a687059c 23
36477c24
PP
24#ifndef SIG_ERR
25# define SIG_ERR ((Sighandler_t) -1)
26#endif
64ca3a65 27#endif
36477c24 28
bd4080b3 29/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 30#ifdef I_UNISTD
8990e307
LW
31# include <unistd.h>
32#endif
33
a687059c
LW
34#ifdef I_VFORK
35# include <vfork.h>
36#endif
37
94b6baf5
AD
38/* Put this after #includes because fork and vfork prototypes may
39 conflict.
40*/
41#ifndef HAS_VFORK
42# define vfork fork
43#endif
44
ff68c719
PP
45#ifdef I_SYS_WAIT
46# include <sys/wait.h>
47#endif
48
097ee67d
JH
49#ifdef I_LOCALE
50# include <locale.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e 55#ifdef LEAKTEST
a0d0e21e 56
8c52afec
IZ
57long xcount[MAXXCOUNT];
58long lastxcount[MAXXCOUNT];
59long xycount[MAXXCOUNT][MAXYCOUNT];
60long lastxycount[MAXXCOUNT][MAXYCOUNT];
61
a0d0e21e 62#endif
a863c7d1 63
16cebae2
GS
64#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
65# define FD_CLOEXEC 1 /* NeXT needs this */
66#endif
67
f2517201 68/* paranoid version of system's malloc() */
8d063cd8 69
a687059c
LW
70/* NOTE: Do not call the next three routines directly. Use the macros
71 * in handy.h, so that we can easily redefine everything to do tracking of
72 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 73 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
74 */
75
bd4080b3 76Malloc_t
4f63d024 77Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 78{
54aff467 79 dTHX;
bd4080b3 80 Malloc_t ptr;
55497cff 81#ifdef HAS_64K_LIMIT
62b28dd9 82 if (size > 0xffff) {
bf49b057 83 PerlIO_printf(Perl_error_log,
16cebae2 84 "Allocation too large: %lx\n", size) FLUSH;
54aff467 85 my_exit(1);
62b28dd9 86 }
55497cff 87#endif /* HAS_64K_LIMIT */
34de22dd
LW
88#ifdef DEBUGGING
89 if ((long)size < 0)
4f63d024 90 Perl_croak_nocontext("panic: malloc");
34de22dd 91#endif
12ae5dfc 92 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 93 PERL_ALLOC_CHECK(ptr);
97835f67 94 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW
95 if (ptr != Nullch)
96 return ptr;
3280af22 97 else if (PL_nomemok)
7c0587c8 98 return Nullch;
8d063cd8 99 else {
bf49b057 100 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 101 my_exit(1);
4e35701f 102 return Nullch;
8d063cd8
LW
103 }
104 /*NOTREACHED*/
105}
106
f2517201 107/* paranoid version of system's realloc() */
8d063cd8 108
bd4080b3 109Malloc_t
4f63d024 110Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 111{
54aff467 112 dTHX;
bd4080b3 113 Malloc_t ptr;
9a34ef1d 114#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 115 Malloc_t PerlMem_realloc();
ecfc5424 116#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 117
55497cff 118#ifdef HAS_64K_LIMIT
5f05dabc 119 if (size > 0xffff) {
bf49b057 120 PerlIO_printf(Perl_error_log,
5f05dabc 121 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 122 my_exit(1);
5f05dabc 123 }
55497cff 124#endif /* HAS_64K_LIMIT */
7614df0c 125 if (!size) {
f2517201 126 safesysfree(where);
7614df0c
JD
127 return NULL;
128 }
129
378cc40b 130 if (!where)
f2517201 131 return safesysmalloc(size);
34de22dd
LW
132#ifdef DEBUGGING
133 if ((long)size < 0)
4f63d024 134 Perl_croak_nocontext("panic: realloc");
34de22dd 135#endif
12ae5dfc 136 ptr = (Malloc_t)PerlMem_realloc(where,size);
da927450 137 PERL_ALLOC_CHECK(ptr);
cd39f2b6 138
97835f67
JH
139 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
140 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 141
8d063cd8
LW
142 if (ptr != Nullch)
143 return ptr;
3280af22 144 else if (PL_nomemok)
7c0587c8 145 return Nullch;
8d063cd8 146 else {
bf49b057 147 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 148 my_exit(1);
4e35701f 149 return Nullch;
8d063cd8
LW
150 }
151 /*NOTREACHED*/
152}
153
f2517201 154/* safe version of system's free() */
8d063cd8 155
54310121 156Free_t
4f63d024 157Perl_safesysfree(Malloc_t where)
8d063cd8 158{
155aba94 159#ifdef PERL_IMPLICIT_SYS
54aff467 160 dTHX;
155aba94 161#endif
97835f67 162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 163 if (where) {
de3bb511 164 /*SUPPRESS 701*/
6ad3d225 165 PerlMem_free(where);
378cc40b 166 }
8d063cd8
LW
167}
168
f2517201 169/* safe version of system's calloc() */
1050c9ca 170
bd4080b3 171Malloc_t
4f63d024 172Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 173{
54aff467 174 dTHX;
bd4080b3 175 Malloc_t ptr;
1050c9ca 176
55497cff 177#ifdef HAS_64K_LIMIT
5f05dabc 178 if (size * count > 0xffff) {
bf49b057 179 PerlIO_printf(Perl_error_log,
5f05dabc 180 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 181 my_exit(1);
5f05dabc 182 }
55497cff 183#endif /* HAS_64K_LIMIT */
1050c9ca
PP
184#ifdef DEBUGGING
185 if ((long)size < 0 || (long)count < 0)
4f63d024 186 Perl_croak_nocontext("panic: calloc");
1050c9ca 187#endif
0b7c1c42 188 size *= count;
12ae5dfc 189 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 190 PERL_ALLOC_CHECK(ptr);
97835f67 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca
PP
192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca
PP
197 return Nullch;
198 else {
bf49b057 199 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 200 my_exit(1);
4e35701f 201 return Nullch;
1050c9ca
PP
202 }
203 /*NOTREACHED*/
204}
205
a687059c
LW
206#ifdef LEAKTEST
207
8c52afec
IZ
208struct mem_test_strut {
209 union {
210 long type;
211 char c[2];
212 } u;
213 long size;
214};
215
216# define ALIGN sizeof(struct mem_test_strut)
217
218# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219# define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221# define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? MAXYCOUNT - 1 \
225 : ( (size) > 40 \
226 ? ((size) - 1)/8 + 5 \
227 : ((size) - 1)/4))
8d063cd8 228
bd4080b3 229Malloc_t
4f63d024 230Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 231{
8c52afec 232 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 233
8c52afec
IZ
234 xcount[x] += size;
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
8d063cd8 239}
8d063cd8 240
bd4080b3 241Malloc_t
4f63d024 242Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 243{
8c52afec
IZ
244 char *where = (char*)wh;
245
246 if (!wh)
247 return safexmalloc(0,size);
248
249 {
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
253
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
259 }
a687059c
LW
260}
261
262void
4f63d024 263Perl_safexfree(Malloc_t wh)
a687059c 264{
79072805 265 I32 x;
8c52afec
IZ
266 char *where = (char*)wh;
267 MEM_SIZE size;
268
a687059c
LW
269 if (!where)
270 return;
271 where -= ALIGN;
8c52afec 272 size = sizeof_chunk(where);
a687059c 273 x = where[0] + 100 * where[1];
8c52afec
IZ
274 xcount[x] -= size;
275 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
276 safefree(where);
277}
278
bd4080b3 279Malloc_t
4f63d024 280Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 281{
8c52afec
IZ
282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
283 xcount[x] += size;
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
289}
290
864dbfa3 291STATIC void
cea2e8a9 292S_xstat(pTHX_ int flag)
8d063cd8 293{
8c52afec
IZ
294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
8d063cd8 296
8c52afec
IZ
297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] = 0;
299 }
300
bf49b057 301 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 302 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
303 total += xcount[i];
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
306 }
307 if (flag == 0
308 ? xcount[i] /* Have something */
309 : (flag == 2
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 312 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 314 lastxcount[i] = xcount[i];
8c52afec
IZ
315 for (j = 0; j < MAXYCOUNT; j++) {
316 if ( flag == 0
317 ? xycount[i][j] /* Have something */
318 : (flag == 2
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 321 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ
322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
bf49b057 327 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ
328 }
329 }
bf49b057 330 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ
331 }
332 }
333 if (flag != 2) {
bf49b057 334 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ
335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
bf49b057 337 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 338 } else {
bf49b057 339 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 340 }
8d063cd8 341 }
bf49b057 342 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 343 }
8d063cd8 344}
a687059c
LW
345
346#endif /* LEAKTEST */
8d063cd8
LW
347
348/* copy a string up to some (non-backslashed) delimiter, if any */
349
350char *
864dbfa3 351Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 352{
fc36a67e
PP
353 register I32 tolen;
354 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
355 if (*from == '\\') {
356 if (from[1] == delim)
357 from++;
fc36a67e
PP
358 else {
359 if (to < toend)
360 *to++ = *from;
361 tolen++;
362 from++;
363 }
378cc40b 364 }
bedebaa5 365 else if (*from == delim)
8d063cd8 366 break;
fc36a67e
PP
367 if (to < toend)
368 *to++ = *from;
8d063cd8 369 }
bedebaa5
CS
370 if (to < toend)
371 *to = '\0';
fc36a67e 372 *retlen = tolen;
8d063cd8
LW
373 return from;
374}
375
376/* return ptr to little string in big string, NULL if not found */
378cc40b 377/* This routine was donated by Corey Satten. */
8d063cd8
LW
378
379char *
864dbfa3 380Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 381{
08105a92 382 register const char *s, *x;
79072805 383 register I32 first;
378cc40b 384
a687059c 385 if (!little)
08105a92 386 return (char*)big;
a687059c 387 first = *little++;
378cc40b 388 if (!first)
08105a92 389 return (char*)big;
378cc40b
LW
390 while (*big) {
391 if (*big++ != first)
392 continue;
393 for (x=big,s=little; *s; /**/ ) {
394 if (!*x)
395 return Nullch;
396 if (*s++ != *x++) {
397 s--;
398 break;
399 }
400 }
401 if (!*s)
08105a92 402 return (char*)(big-1);
378cc40b
LW
403 }
404 return Nullch;
405}
8d063cd8 406
a687059c
LW
407/* same as instr but allow embedded nulls */
408
409char *
864dbfa3 410Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 411{
08105a92 412 register const char *s, *x;
79072805 413 register I32 first = *little;
08105a92 414 register const char *littleend = lend;
378cc40b 415
a0d0e21e 416 if (!first && little >= littleend)
08105a92 417 return (char*)big;
de3bb511
LW
418 if (bigend - big < littleend - little)
419 return Nullch;
a687059c
LW
420 bigend -= littleend - little++;
421 while (big <= bigend) {
422 if (*big++ != first)
423 continue;
424 for (x=big,s=little; s < littleend; /**/ ) {
425 if (*s++ != *x++) {
426 s--;
427 break;
428 }
429 }
430 if (s >= littleend)
08105a92 431 return (char*)(big-1);
378cc40b 432 }
a687059c
LW
433 return Nullch;
434}
435
436/* reverse of the above--find last substring */
437
438char *
864dbfa3 439Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 440{
08105a92
GS
441 register const char *bigbeg;
442 register const char *s, *x;
79072805 443 register I32 first = *little;
08105a92 444 register const char *littleend = lend;
a687059c 445
a0d0e21e 446 if (!first && little >= littleend)
08105a92 447 return (char*)bigend;
a687059c
LW
448 bigbeg = big;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
451 if (*big-- != first)
452 continue;
453 for (x=big+2,s=little; s < littleend; /**/ ) {
454 if (*s++ != *x++) {
455 s--;
456 break;
457 }
458 }
459 if (s >= littleend)
08105a92 460 return (char*)(big+1);
378cc40b 461 }
a687059c 462 return Nullch;
378cc40b 463}
a687059c 464
bbce6d69
PP
465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
864dbfa3 469Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 470{
36477c24
PP
471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69
PP
475 for (i = 0; i < 256; i++) {
476 if (isUPPER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 478 else if (isLOWER_LC(i))
22c35a8c 479 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 480 else
22c35a8c 481 PL_fold_locale[i] = i;
bbce6d69 482 }
bbce6d69 483
36477c24
PP
484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69
PP
486
487/*
488 * Set up for a new collation locale.
489 */
490void
864dbfa3 491Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 492{
36477c24
PP
493#ifdef USE_LOCALE_COLLATE
494
bbce6d69 495 if (! newcoll) {
3280af22
NIS
496 if (PL_collation_name) {
497 ++PL_collation_ix;
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
bbce6d69
PP
503 }
504 return;
505 }
506
3280af22
NIS
507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
508 ++PL_collation_ix;
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 512
bbce6d69
PP
513 {
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516#define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
521 if (mult < 1)
cea2e8a9 522 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
bbce6d69 525 }
bbce6d69 526 }
bbce6d69 527
36477c24
PP
528#endif /* USE_LOCALE_COLLATE */
529}
bbce6d69 530
097ee67d 531void
51371543 532Perl_set_numeric_radix(pTHX)
097ee67d
JH
533{
534#ifdef USE_LOCALE_NUMERIC
535# ifdef HAS_LOCALECONV
536 struct lconv* lc;
537
538 lc = localeconv();
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
544 else
545 PL_numeric_radix = 0;
546# endif /* HAS_LOCALECONV */
097ee67d
JH
547#endif /* USE_LOCALE_NUMERIC */
548}
549
bbce6d69
PP
550/*
551 * Set up for a new numeric locale.
552 */
553void
864dbfa3 554Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 555{
36477c24
PP
556#ifdef USE_LOCALE_NUMERIC
557
bbce6d69 558 if (! newnum) {
3280af22
NIS
559 if (PL_numeric_name) {
560 Safefree(PL_numeric_name);
561 PL_numeric_name = NULL;
562 PL_numeric_standard = TRUE;
563 PL_numeric_local = TRUE;
bbce6d69
PP
564 }
565 return;
566 }
567
3280af22
NIS
568 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
569 Safefree(PL_numeric_name);
570 PL_numeric_name = savepv(newnum);
571 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
572 PL_numeric_local = TRUE;
51371543 573 set_numeric_radix();
bbce6d69 574 }
36477c24
PP
575
576#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
577}
578
579void
864dbfa3 580Perl_set_numeric_standard(pTHX)
bbce6d69 581{
5f05dabc
PP
582#ifdef USE_LOCALE_NUMERIC
583
3280af22 584 if (! PL_numeric_standard) {
bbce6d69 585 setlocale(LC_NUMERIC, "C");
3280af22
NIS
586 PL_numeric_standard = TRUE;
587 PL_numeric_local = FALSE;
bbce6d69 588 }
5f05dabc
PP
589
590#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
591}
592
593void
864dbfa3 594Perl_set_numeric_local(pTHX)
bbce6d69 595{
5f05dabc
PP
596#ifdef USE_LOCALE_NUMERIC
597
3280af22
NIS
598 if (! PL_numeric_local) {
599 setlocale(LC_NUMERIC, PL_numeric_name);
600 PL_numeric_standard = FALSE;
601 PL_numeric_local = TRUE;
51371543 602 set_numeric_radix();
bbce6d69 603 }
bbce6d69 604
36477c24 605#endif /* USE_LOCALE_NUMERIC */
5f05dabc 606}
36477c24 607
36477c24
PP
608/*
609 * Initialize locale awareness.
610 */
f0c5b223 611int
864dbfa3 612Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
613{
614 int ok = 1;
615 /* returns
616 * 1 = set ok or not applicable,
617 * 0 = fallback to C locale,
618 * -1 = fallback to C locale failed
619 */
bbce6d69 620
36477c24 621#ifdef USE_LOCALE
bbce6d69 622
36477c24 623#ifdef USE_LOCALE_CTYPE
bbce6d69 624 char *curctype = NULL;
36477c24
PP
625#endif /* USE_LOCALE_CTYPE */
626#ifdef USE_LOCALE_COLLATE
bbce6d69 627 char *curcoll = NULL;
36477c24
PP
628#endif /* USE_LOCALE_COLLATE */
629#ifdef USE_LOCALE_NUMERIC
bbce6d69 630 char *curnum = NULL;
36477c24 631#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
632#ifdef __GLIBC__
633 char *language = PerlEnv_getenv("LANGUAGE");
634#endif
76e3520e
GS
635 char *lc_all = PerlEnv_getenv("LC_ALL");
636 char *lang = PerlEnv_getenv("LANG");
bbce6d69 637 bool setlocale_failure = FALSE;
f0c5b223 638
02b32252
CS
639#ifdef LOCALE_ENVIRON_REQUIRED
640
641 /*
642 * Ultrix setlocale(..., "") fails if there are no environment
643 * variables from which to get a locale name.
644 */
645
646 bool done = FALSE;
647
648#ifdef LC_ALL
649 if (lang) {
650 if (setlocale(LC_ALL, ""))
651 done = TRUE;
652 else
653 setlocale_failure = TRUE;
654 }
0644c9cb 655 if (!setlocale_failure) {
02b32252 656#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
657 if (! (curctype =
658 setlocale(LC_CTYPE,
659 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
660 ? "" : Nullch)))
661 setlocale_failure = TRUE;
662#endif /* USE_LOCALE_CTYPE */
663#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
664 if (! (curcoll =
665 setlocale(LC_COLLATE,
666 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
667 ? "" : Nullch)))
668 setlocale_failure = TRUE;
669#endif /* USE_LOCALE_COLLATE */
670#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
671 if (! (curnum =
672 setlocale(LC_NUMERIC,
673 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
674 ? "" : Nullch)))
675 setlocale_failure = TRUE;
676#endif /* USE_LOCALE_NUMERIC */
677 }
678
0644c9cb 679#endif /* LC_ALL */
02b32252 680
0644c9cb 681#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 682
0644c9cb 683#ifdef LC_ALL
bbce6d69
PP
684 if (! setlocale(LC_ALL, ""))
685 setlocale_failure = TRUE;
0644c9cb 686#endif /* LC_ALL */
bbce6d69 687
0644c9cb 688 if (!setlocale_failure) {
36477c24 689#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
690 if (! (curctype = setlocale(LC_CTYPE, "")))
691 setlocale_failure = TRUE;
36477c24
PP
692#endif /* USE_LOCALE_CTYPE */
693#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
694 if (! (curcoll = setlocale(LC_COLLATE, "")))
695 setlocale_failure = TRUE;
36477c24
PP
696#endif /* USE_LOCALE_COLLATE */
697#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
698 if (! (curnum = setlocale(LC_NUMERIC, "")))
699 setlocale_failure = TRUE;
36477c24 700#endif /* USE_LOCALE_NUMERIC */
0644c9cb 701 }
02b32252 702
5f05dabc
PP
703 if (setlocale_failure) {
704 char *p;
705 bool locwarn = (printwarn > 1 ||
155aba94
GS
706 (printwarn &&
707 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 708
5f05dabc
PP
709 if (locwarn) {
710#ifdef LC_ALL
711
bf49b057 712 PerlIO_printf(Perl_error_log,
5f05dabc
PP
713 "perl: warning: Setting locale failed.\n");
714
715#else /* !LC_ALL */
716
bf49b057 717 PerlIO_printf(Perl_error_log,
bbce6d69 718 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 719#ifdef USE_LOCALE_CTYPE
bbce6d69 720 if (! curctype)
bf49b057 721 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24
PP
722#endif /* USE_LOCALE_CTYPE */
723#ifdef USE_LOCALE_COLLATE
bbce6d69 724 if (! curcoll)
bf49b057 725 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24
PP
726#endif /* USE_LOCALE_COLLATE */
727#ifdef USE_LOCALE_NUMERIC
bbce6d69 728 if (! curnum)
bf49b057 729 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 730#endif /* USE_LOCALE_NUMERIC */
bf49b057 731 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 732
5f05dabc
PP
733#endif /* LC_ALL */
734
bf49b057 735 PerlIO_printf(Perl_error_log,
bbce6d69 736 "perl: warning: Please check that your locale settings:\n");
ef7eada9 737
3aeabbed 738#ifdef __GLIBC__
bf49b057 739 PerlIO_printf(Perl_error_log,
3aeabbed
JH
740 "\tLANGUAGE = %c%s%c,\n",
741 language ? '"' : '(',
742 language ? language : "unset",
743 language ? '"' : ')');
744#endif
745
bf49b057 746 PerlIO_printf(Perl_error_log,
bbce6d69
PP
747 "\tLC_ALL = %c%s%c,\n",
748 lc_all ? '"' : '(',
749 lc_all ? lc_all : "unset",
750 lc_all ? '"' : ')');
5f05dabc
PP
751
752 {
753 char **e;
754 for (e = environ; *e; e++) {
755 if (strnEQ(*e, "LC_", 3)
756 && strnNE(*e, "LC_ALL=", 7)
757 && (p = strchr(*e, '=')))
bf49b057 758 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 759 (int)(p - *e), *e, p + 1);
5f05dabc
PP
760 }
761 }
762
bf49b057 763 PerlIO_printf(Perl_error_log,
bbce6d69 764 "\tLANG = %c%s%c\n",
5f05dabc 765 lang ? '"' : '(',
bbce6d69
PP
766 lang ? lang : "unset",
767 lang ? '"' : ')');
ef7eada9 768
bf49b057 769 PerlIO_printf(Perl_error_log,
bbce6d69 770 " are supported and installed on your system.\n");
5f05dabc 771 }
ef7eada9 772
5f05dabc
PP
773#ifdef LC_ALL
774
775 if (setlocale(LC_ALL, "C")) {
776 if (locwarn)
bf49b057 777 PerlIO_printf(Perl_error_log,
5f05dabc 778 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 779 ok = 0;
ef7eada9 780 }
5f05dabc
PP
781 else {
782 if (locwarn)
bf49b057 783 PerlIO_printf(Perl_error_log,
5f05dabc
PP
784 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
785 ok = -1;
786 }
bbce6d69 787
5f05dabc
PP
788#else /* ! LC_ALL */
789
790 if (0
36477c24 791#ifdef USE_LOCALE_CTYPE
5f05dabc 792 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
793#endif /* USE_LOCALE_CTYPE */
794#ifdef USE_LOCALE_COLLATE
5f05dabc 795 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
796#endif /* USE_LOCALE_COLLATE */
797#ifdef USE_LOCALE_NUMERIC
5f05dabc 798 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 799#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
800 )
801 {
802 if (locwarn)
bf49b057 803 PerlIO_printf(Perl_error_log,
5f05dabc
PP
804 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
805 ok = -1;
bbce6d69 806 }
5f05dabc 807
bbce6d69 808#endif /* ! LC_ALL */
5f05dabc
PP
809
810#ifdef USE_LOCALE_CTYPE
811 curctype = setlocale(LC_CTYPE, Nullch);
812#endif /* USE_LOCALE_CTYPE */
813#ifdef USE_LOCALE_COLLATE
814 curcoll = setlocale(LC_COLLATE, Nullch);
815#endif /* USE_LOCALE_COLLATE */
816#ifdef USE_LOCALE_NUMERIC
817 curnum = setlocale(LC_NUMERIC, Nullch);
818#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
819 }
820
36477c24 821#ifdef USE_LOCALE_CTYPE
864dbfa3 822 new_ctype(curctype);
36477c24 823#endif /* USE_LOCALE_CTYPE */
bbce6d69 824
36477c24 825#ifdef USE_LOCALE_COLLATE
864dbfa3 826 new_collate(curcoll);
36477c24 827#endif /* USE_LOCALE_COLLATE */
bbce6d69 828
36477c24 829#ifdef USE_LOCALE_NUMERIC
864dbfa3 830 new_numeric(curnum);
36477c24 831#endif /* USE_LOCALE_NUMERIC */
ef7eada9 832
36477c24 833#endif /* USE_LOCALE */
ef7eada9 834
f0c5b223
TB
835 return ok;
836}
837
bbce6d69
PP
838/* Backwards compatibility. */
839int
864dbfa3 840Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 841{
864dbfa3 842 return init_i18nl10n(printwarn);
bbce6d69 843}
ef7eada9 844
36477c24 845#ifdef USE_LOCALE_COLLATE
ef7eada9 846
bbce6d69
PP
847/*
848 * mem_collxfrm() is a bit like strxfrm() but with two important
849 * differences. First, it handles embedded NULs. Second, it allocates
850 * a bit more memory than needed for the transformed data itself.
851 * The real transformed data begins at offset sizeof(collationix).
852 * Please see sv_collxfrm() to see how this is used.
853 */
854char *
864dbfa3 855Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
856{
857 char *xbuf;
76e3520e 858 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
859
860 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
861 /* the +1 is for the terminating NUL. */
862
3280af22 863 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 864 New(171, xbuf, xAlloc, char);
bbce6d69
PP
865 if (! xbuf)
866 goto bad;
867
3280af22
NIS
868 *(U32*)xbuf = PL_collation_ix;
869 xout = sizeof(PL_collation_ix);
bbce6d69
PP
870 for (xin = 0; xin < len; ) {
871 SSize_t xused;
872
873 for (;;) {
76e3520e 874 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
875 if (xused == -1)
876 goto bad;
76e3520e 877 if (xused < xAlloc - xout)
bbce6d69 878 break;
76e3520e
GS
879 xAlloc = (2 * xAlloc) + 1;
880 Renew(xbuf, xAlloc, char);
bbce6d69
PP
881 if (! xbuf)
882 goto bad;
883 }
ef7eada9 884
bbce6d69
PP
885 xin += strlen(s + xin) + 1;
886 xout += xused;
887
888 /* Embedded NULs are understood but silently skipped
889 * because they make no sense in locale collation. */
890 }
ef7eada9 891
bbce6d69 892 xbuf[xout] = '\0';
3280af22 893 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
894 return xbuf;
895
896 bad:
897 Safefree(xbuf);
898 *xlen = 0;
899 return NULL;
ef7eada9
JH
900}
901
36477c24 902#endif /* USE_LOCALE_COLLATE */
bbce6d69 903
cf93c79d
IZ
904#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
905
906/* As a space optimization, we do not compile tables for strings of length
907 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
908 special-cased in fbm_instr().
909
910 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
911
954c1994
GS
912/*
913=for apidoc fbm_compile
914
915Analyses the string in order to make fast searches on it using fbm_instr()
916-- the Boyer-Moore algorithm.
917
918=cut
919*/
920
378cc40b 921void
7506f9c3 922Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 923{
942e002e
GS
924 register U8 *s;
925 register U8 *table;
79072805 926 register U32 i;
0b71040e 927 STRLEN len;
79072805
LW
928 I32 rarest = 0;
929 U32 frequency = 256;
930
cf93c79d
IZ
931 if (flags & FBMcf_TAIL)
932 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 933 s = (U8*)SvPV_force(sv, len);
07f14f54 934 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
935 if (len == 0) /* TAIL might be on on a zero-length string. */
936 return;
02128f11 937 if (len > 2) {
7506f9c3 938 U8 mlen;
cf93c79d
IZ
939 unsigned char *sb;
940
7506f9c3 941 if (len > 255)
cf93c79d 942 mlen = 255;
7506f9c3
GS
943 else
944 mlen = (U8)len;
945 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 946 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS
947 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
948 memset((void*)table, mlen, 256);
949 table[-1] = (U8)flags;
02128f11 950 i = 0;
7506f9c3 951 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ
952 while (s >= sb) {
953 if (table[*s] == mlen)
7506f9c3 954 table[*s] = (U8)i;
cf93c79d
IZ
955 s--, i++;
956 }
378cc40b 957 }
bbce6d69 958 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 959 SvVALID_on(sv);
378cc40b 960
463ee0b2 961 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 962 for (i = 0; i < len; i++) {
22c35a8c 963 if (PL_freq[s[i]] < frequency) {
bbce6d69 964 rarest = i;
22c35a8c 965 frequency = PL_freq[s[i]];
378cc40b
LW
966 }
967 }
79072805
LW
968 BmRARE(sv) = s[rarest];
969 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
970 BmUSEFUL(sv) = 100; /* Initial value */
971 if (flags & FBMcf_TAIL)
972 SvTAIL_on(sv);
7506f9c3
GS
973 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
974 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
975}
976
cf93c79d
IZ
977/* If SvTAIL(littlestr), it has a fake '\n' at end. */
978/* If SvTAIL is actually due to \Z or \z, this gives false positives
979 if multiline */
980
954c1994
GS
981/*
982=for apidoc fbm_instr
983
984Returns the location of the SV in the string delimited by C<str> and
985C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
986does not have to be fbm_compiled, but the search will not be as fast
987then.
988
989=cut
990*/
991
378cc40b 992char *
864dbfa3 993Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 994{
a687059c 995 register unsigned char *s;
cf93c79d
IZ
996 STRLEN l;
997 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
998 register STRLEN littlelen = l;
999 register I32 multiline = flags & FBMrf_MULTILINE;
1000
1001 if (bigend - big < littlelen) {
cf93c79d
IZ
1002 if ( SvTAIL(littlestr)
1003 && (bigend - big == littlelen - 1)
1004 && (littlelen == 1
12ae5dfc
JH
1005 || (*big == *little &&
1006 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ
1007 return (char*)big;
1008 return Nullch;
1009 }
378cc40b 1010
cf93c79d 1011 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ
1012
1013 if (littlelen == 1) {
1014 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1015 /* Know that bigend != big. */
1016 if (bigend[-1] == '\n')
1017 return (char *)(bigend - 1);
1018 return (char *) bigend;
1019 }
1020 s = big;
1021 while (s < bigend) {
1022 if (*s == *little)
1023 return (char *)s;
1024 s++;
1025 }
1026 if (SvTAIL(littlestr))
1027 return (char *) bigend;
1028 return Nullch;
1029 }
1030 if (!littlelen)
1031 return (char*)big; /* Cannot be SvTAIL! */
1032
1033 /* littlelen is 2 */
1034 if (SvTAIL(littlestr) && !multiline) {
1035 if (bigend[-1] == '\n' && bigend[-2] == *little)
1036 return (char*)bigend - 2;
1037 if (bigend[-1] == *little)
1038 return (char*)bigend - 1;
1039 return Nullch;
1040 }
1041 {
1042 /* This should be better than FBM if c1 == c2, and almost
1043 as good otherwise: maybe better since we do less indirection.
1044 And we save a lot of memory by caching no table. */
1045 register unsigned char c1 = little[0];
1046 register unsigned char c2 = little[1];
1047
1048 s = big + 1;
1049 bigend--;
1050 if (c1 != c2) {
1051 while (s <= bigend) {
1052 if (s[0] == c2) {
1053 if (s[-1] == c1)
1054 return (char*)s - 1;
1055 s += 2;
1056 continue;
3fe6f2dc 1057 }
cf93c79d
IZ
1058 next_chars:
1059 if (s[0] == c1) {
1060 if (s == bigend)
1061 goto check_1char_anchor;
1062 if (s[1] == c2)
1063 return (char*)s;
1064 else {
1065 s++;
1066 goto next_chars;
1067 }
1068 }
1069 else
1070 s += 2;
1071 }
1072 goto check_1char_anchor;
1073 }
1074 /* Now c1 == c2 */
1075 while (s <= bigend) {
1076 if (s[0] == c1) {
1077 if (s[-1] == c1)
1078 return (char*)s - 1;
1079 if (s == bigend)
1080 goto check_1char_anchor;
1081 if (s[1] == c1)
1082 return (char*)s;
1083 s += 3;
02128f11 1084 }
c277df42 1085 else
cf93c79d 1086 s += 2;
c277df42 1087 }
c277df42 1088 }
cf93c79d
IZ
1089 check_1char_anchor: /* One char and anchor! */
1090 if (SvTAIL(littlestr) && (*bigend == *little))
1091 return (char *)bigend; /* bigend is already decremented. */
1092 return Nullch;
d48672a2 1093 }
cf93c79d 1094 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1095 s = bigend - littlelen;
7506f9c3 1096 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ
1097 /* Automatically of length > 2 */
1098 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1099 {
bbce6d69 1100 return (char*)s; /* how sweet it is */
7506f9c3
GS
1101 }
1102 if (s[1] == *little
1103 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1104 {
cf93c79d 1105 return (char*)s + 1; /* how sweet it is */
7506f9c3 1106 }
02128f11
IZ
1107 return Nullch;
1108 }
cf93c79d
IZ
1109 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1110 char *b = ninstr((char*)big,(char*)bigend,
1111 (char*)little, (char*)little + littlelen);
1112
1113 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1114 /* Chop \n from littlestr: */
1115 s = bigend - littlelen + 1;
7506f9c3
GS
1116 if (*s == *little
1117 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1118 {
3fe6f2dc 1119 return (char*)s;
7506f9c3 1120 }
cf93c79d 1121 return Nullch;
a687059c 1122 }
cf93c79d 1123 return b;
a687059c 1124 }
cf93c79d
IZ
1125
1126 { /* Do actual FBM. */
1127 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1128 register unsigned char *oldlittle;
1129
1130 if (littlelen > bigend - big)
1131 return Nullch;
1132 --littlelen; /* Last char found by table lookup */
1133
1134 s = big + littlelen;
1135 little += littlelen; /* last char */
1136 oldlittle = little;
1137 if (s < bigend) {
1138 register I32 tmp;
1139
1140 top2:
1141 /*SUPPRESS 560*/
7506f9c3 1142 if ((tmp = table[*s])) {
62b28dd9 1143#ifdef POINTERRIGOR
cf93c79d
IZ
1144 if (bigend - s > tmp) {
1145 s += tmp;
1146 goto top2;
1147 }
bbce6d69 1148 s += tmp;
62b28dd9 1149#else
cf93c79d 1150 if ((s += tmp) < bigend)
62b28dd9 1151 goto top2;
cf93c79d
IZ
1152#endif
1153 goto check_end;
1154 }
1155 else { /* less expensive than calling strncmp() */
1156 register unsigned char *olds = s;
1157
1158 tmp = littlelen;
1159
1160 while (tmp--) {
1161 if (*--s == *--little)
1162 continue;
cf93c79d
IZ
1163 s = olds + 1; /* here we pay the price for failure */
1164 little = oldlittle;
1165 if (s < bigend) /* fake up continue to outer loop */
1166 goto top2;
1167 goto check_end;
1168 }
1169 return (char *)s;
a687059c 1170 }
378cc40b 1171 }
cf93c79d
IZ
1172 check_end:
1173 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH
1174 && memEQ((char *)(bigend - littlelen),
1175 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ
1176 return (char*)bigend - littlelen;
1177 return Nullch;
378cc40b 1178 }
378cc40b
LW
1179}
1180
c277df42
IZ
1181/* start_shift, end_shift are positive quantities which give offsets
1182 of ends of some substring of bigstr.
1183 If `last' we want the last occurence.
1184 old_posp is the way of communication between consequent calls if
1185 the next call needs to find the .
1186 The initial *old_posp should be -1.
cf93c79d
IZ
1187
1188 Note that we take into account SvTAIL, so one can get extra
1189 optimizations if _ALL flag is set.
c277df42
IZ
1190 */
1191
cf93c79d
IZ
1192/* If SvTAIL is actually due to \Z or \z, this gives false positives
1193 if PL_multiline. In fact if !PL_multiline the autoritative answer
1194 is not supported yet. */
1195
378cc40b 1196char *
864dbfa3 1197Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1198{
5c0ca799 1199 dTHR;
a687059c
LW
1200 register unsigned char *s, *x;
1201 register unsigned char *big;
79072805
LW
1202 register I32 pos;
1203 register I32 previous;
1204 register I32 first;
a687059c 1205 register unsigned char *little;
c277df42 1206 register I32 stop_pos;
a687059c 1207 register unsigned char *littleend;
c277df42 1208 I32 found = 0;
378cc40b 1209
c277df42 1210 if (*old_posp == -1
3280af22 1211 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1212 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1213 cant_find:
1214 if ( BmRARE(littlestr) == '\n'
1215 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1216 little = (unsigned char *)(SvPVX(littlestr));
1217 littleend = little + SvCUR(littlestr);
1218 first = *little++;
1219 goto check_tail;
1220 }
378cc40b 1221 return Nullch;
cf93c79d
IZ
1222 }
1223
463ee0b2 1224 little = (unsigned char *)(SvPVX(littlestr));
79072805 1225 littleend = little + SvCUR(littlestr);
378cc40b 1226 first = *little++;
c277df42 1227 /* The value of pos we can start at: */
79072805 1228 previous = BmPREVIOUS(littlestr);
463ee0b2 1229 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1230 /* The value of pos we can stop at: */
1231 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1232 if (previous + start_shift > stop_pos) {
1233 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1234 goto check_tail;
1235 return Nullch;
1236 }
c277df42 1237 while (pos < previous + start_shift) {
3280af22 1238 if (!(pos += PL_screamnext[pos]))
cf93c79d 1239 goto cant_find;
378cc40b 1240 }
de3bb511 1241#ifdef POINTERRIGOR
bbce6d69 1242 do {
ef64f398 1243 if (pos >= stop_pos) break;
bbce6d69
PP
1244 if (big[pos-previous] != first)
1245 continue;
1246 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1247 if (*s++ != *x++) {
1248 s--;
1249 break;
de3bb511 1250 }
bbce6d69 1251 }
c277df42
IZ
1252 if (s == littleend) {
1253 *old_posp = pos;
1254 if (!last) return (char *)(big+pos-previous);
1255 found = 1;
1256 }
6b88bc9c 1257 } while ( pos += PL_screamnext[pos] );
c277df42 1258 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1259#else /* !POINTERRIGOR */
1260 big -= previous;
bbce6d69 1261 do {
ef64f398 1262 if (pos >= stop_pos) break;
bbce6d69
PP
1263 if (big[pos] != first)
1264 continue;
1265 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1266 if (*s++ != *x++) {
1267 s--;
1268 break;
378cc40b 1269 }
bbce6d69 1270 }
c277df42
IZ
1271 if (s == littleend) {
1272 *old_posp = pos;
1273 if (!last) return (char *)(big+pos);
1274 found = 1;
1275 }
3280af22 1276 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1277 if (last && found)
1278 return (char *)(big+(*old_posp));
de3bb511 1279#endif /* POINTERRIGOR */
cf93c79d
IZ
1280 check_tail:
1281 if (!SvTAIL(littlestr) || (end_shift > 0))
1282 return Nullch;
1283 /* Ignore the trailing "\n". This code is not microoptimized */
1284 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1285 stop_pos = littleend - little; /* Actual littlestr len */
1286 if (stop_pos == 0)
1287 return (char*)big;
1288 big -= stop_pos;
1289 if (*big == first
12ae5dfc
JH
1290 && ((stop_pos == 1) ||
1291 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ
1292 return (char*)big;
1293 return Nullch;
8d063cd8
LW
1294}
1295
79072805 1296I32
864dbfa3 1297Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1298{
bbce6d69
PP
1299 register U8 *a = (U8 *)s1;
1300 register U8 *b = (U8 *)s2;
79072805 1301 while (len--) {
22c35a8c 1302 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1303 return 1;
1304 a++,b++;
1305 }
1306 return 0;
1307}
1308
1309I32
864dbfa3 1310Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1311{
1312 register U8 *a = (U8 *)s1;
1313 register U8 *b = (U8 *)s2;
1314 while (len--) {
22c35a8c 1315 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1316 return 1;
1317 a++,b++;
79072805
LW
1318 }
1319 return 0;
1320}
1321
8d063cd8
LW
1322/* copy a string to a safe spot */
1323
954c1994
GS
1324/*
1325=for apidoc savepv
1326
1327Copy a string to a safe spot. This does not use an SV.
1328
1329=cut
1330*/
1331
8d063cd8 1332char *
864dbfa3 1333Perl_savepv(pTHX_ const char *sv)
8d063cd8 1334{
a687059c 1335 register char *newaddr;
8d063cd8 1336
79072805
LW
1337 New(902,newaddr,strlen(sv)+1,char);
1338 (void)strcpy(newaddr,sv);
8d063cd8
LW
1339 return newaddr;
1340}
1341
a687059c
LW
1342/* same thing but with a known length */
1343
954c1994
GS
1344/*
1345=for apidoc savepvn
1346
1347Copy a string to a safe spot. The C<len> indicates number of bytes to
1348copy. This does not use an SV.
1349
1350=cut
1351*/
1352
a687059c 1353char *
864dbfa3 1354Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1355{
1356 register char *newaddr;
1357
1358 New(903,newaddr,len+1,char);
79072805 1359 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1360 newaddr[len] = '\0'; /* is now */
1361 return newaddr;
1362}
1363
cea2e8a9 1364/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1365
76e3520e 1366STATIC SV *
cea2e8a9 1367S_mess_alloc(pTHX)
fc36a67e 1368{
e72dc28c 1369 dTHR;
fc36a67e
PP
1370 SV *sv;
1371 XPVMG *any;
1372
e72dc28c
GS
1373 if (!PL_dirty)
1374 return sv_2mortal(newSVpvn("",0));
1375
0372dbb6
GS
1376 if (PL_mess_sv)
1377 return PL_mess_sv;
1378
fc36a67e
PP
1379 /* Create as PVMG now, to avoid any upgrading later */
1380 New(905, sv, 1, SV);
1381 Newz(905, any, 1, XPVMG);
1382 SvFLAGS(sv) = SVt_PVMG;
1383 SvANY(sv) = (void*)any;
1384 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1385 PL_mess_sv = sv;
fc36a67e
PP
1386 return sv;
1387}
1388
c5be433b 1389#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1390char *
1391Perl_form_nocontext(const char* pat, ...)
1392{
1393 dTHX;
c5be433b 1394 char *retval;
cea2e8a9
GS
1395 va_list args;
1396 va_start(args, pat);
c5be433b 1397 retval = vform(pat, &args);
cea2e8a9 1398 va_end(args);
c5be433b 1399 return retval;
cea2e8a9 1400}
c5be433b 1401#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1402
8990e307 1403char *
864dbfa3 1404Perl_form(pTHX_ const char* pat, ...)
8990e307 1405{
c5be433b 1406 char *retval;
46fc3d4c 1407 va_list args;
46fc3d4c 1408 va_start(args, pat);
c5be433b 1409 retval = vform(pat, &args);
46fc3d4c 1410 va_end(args);
c5be433b
GS
1411 return retval;
1412}
1413
1414char *
1415Perl_vform(pTHX_ const char *pat, va_list *args)
1416{
1417 SV *sv = mess_alloc();
1418 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1419 return SvPVX(sv);
46fc3d4c 1420}
a687059c 1421
5a844595
GS
1422#if defined(PERL_IMPLICIT_CONTEXT)
1423SV *
1424Perl_mess_nocontext(const char *pat, ...)
1425{
1426 dTHX;
1427 SV *retval;
1428 va_list args;
1429 va_start(args, pat);
1430 retval = vmess(pat, &args);
1431 va_end(args);
1432 return retval;
1433}
1434#endif /* PERL_IMPLICIT_CONTEXT */
1435
06bf62c7 1436SV *
5a844595
GS
1437Perl_mess(pTHX_ const char *pat, ...)
1438{
1439 SV *retval;
1440 va_list args;
1441 va_start(args, pat);
1442 retval = vmess(pat, &args);
1443 va_end(args);
1444 return retval;
1445}
1446
1447SV *
1448Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1449{
e72dc28c 1450 SV *sv = mess_alloc();
46fc3d4c
PP
1451 static char dgd[] = " during global destruction.\n";
1452
fc36a67e 1453 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1454 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1455 dTHR;
57843af0 1456 if (CopLINE(PL_curcop))
ed094faf
GS
1457 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1458 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS
1459 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1460 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1461 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1462 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH
1463 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1464 line_mode ? "line" : "chunk",
1465 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1466 }
9efbc0eb 1467#ifdef USE_THREADS
e8e6f333
GS
1468 if (thr->tid)
1469 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1470#endif
515f54a1 1471 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1472 }
06bf62c7 1473 return sv;
a687059c
LW
1474}
1475
c5be433b
GS
1476OP *
1477Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1478{
5dc0d613 1479 dTHR;
36477c24 1480 char *message;
3280af22 1481 int was_in_eval = PL_in_eval;
36477c24
PP
1482 HV *stash;
1483 GV *gv;
1484 CV *cv;
06bf62c7
GS
1485 SV *msv;
1486 STRLEN msglen;
36477c24 1487
bf49b057 1488 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1489 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1490 thr, PL_curstack, PL_mainstack));
36477c24 1491
06bf62c7 1492 if (pat) {
5a844595
GS
1493 msv = vmess(pat, args);
1494 if (PL_errors && SvCUR(PL_errors)) {
1495 sv_catsv(PL_errors, msv);
1496 message = SvPV(PL_errors, msglen);
1497 SvCUR_set(PL_errors, 0);
1498 }
1499 else
1500 message = SvPV(msv,msglen);
06bf62c7
GS
1501 }
1502 else {
1503 message = Nullch;
0f79a09d 1504 msglen = 0;
06bf62c7 1505 }
36477c24 1506
bf49b057 1507 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1508 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1509 thr, message, PL_diehook));
3280af22 1510 if (PL_diehook) {
cea2e8a9 1511 /* sv_2cv might call Perl_croak() */
3280af22 1512 SV *olddiehook = PL_diehook;
1738f5c4 1513 ENTER;
3280af22
NIS
1514 SAVESPTR(PL_diehook);
1515 PL_diehook = Nullsv;
1738f5c4
CS
1516 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1517 LEAVE;
1518 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1519 dSP;
774d564b
PP
1520 SV *msg;
1521
1522 ENTER;
3a1f2dc9 1523 save_re_context();
79cb57f6 1524 if (message) {
06bf62c7 1525 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1526 SvREADONLY_on(msg);
1527 SAVEFREESV(msg);
1528 }
1529 else {
1530 msg = ERRSV;
1531 }
1738f5c4 1532
e788e7d3 1533 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1534 PUSHMARK(SP);
1738f5c4
CS
1535 XPUSHs(msg);
1536 PUTBACK;
0cdb2077 1537 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1538 POPSTACK;
774d564b 1539 LEAVE;
1738f5c4 1540 }
36477c24
PP
1541 }
1542
06bf62c7 1543 PL_restartop = die_where(message, msglen);
bf49b057 1544 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1545 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1546 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1547 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1548 JMPENV_JUMP(3);
3280af22 1549 return PL_restartop;
36477c24
PP
1550}
1551
c5be433b 1552#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1553OP *
1554Perl_die_nocontext(const char* pat, ...)
a687059c 1555{
cea2e8a9
GS
1556 dTHX;
1557 OP *o;
a687059c 1558 va_list args;
cea2e8a9 1559 va_start(args, pat);
c5be433b 1560 o = vdie(pat, &args);
cea2e8a9
GS
1561 va_end(args);
1562 return o;
1563}
c5be433b 1564#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1565
1566OP *
1567Perl_die(pTHX_ const char* pat, ...)
1568{
1569 OP *o;
1570 va_list args;
1571 va_start(args, pat);
c5be433b 1572 o = vdie(pat, &args);
cea2e8a9
GS
1573 va_end(args);
1574 return o;
1575}
1576
c5be433b
GS
1577void
1578Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS
1579{
1580 dTHR;
de3bb511 1581 char *message;
748a9306
LW
1582 HV *stash;
1583 GV *gv;
1584 CV *cv;
06bf62c7
GS
1585 SV *msv;
1586 STRLEN msglen;
a687059c 1587
9983fa3c
GS
1588 if (pat) {
1589 msv = vmess(pat, args);
1590 if (PL_errors && SvCUR(PL_errors)) {
1591 sv_catsv(PL_errors, msv);
1592 message = SvPV(PL_errors, msglen);
1593 SvCUR_set(PL_errors, 0);
1594 }
1595 else
1596 message = SvPV(msv,msglen);
1597 }
1598 else {
1599 message = Nullch;
1600 msglen = 0;
5a844595 1601 }
5a844595 1602
b900a521
JH
1603 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1604 PTR2UV(thr), message));
5a844595 1605
3280af22 1606 if (PL_diehook) {
cea2e8a9 1607 /* sv_2cv might call Perl_croak() */
3280af22 1608 SV *olddiehook = PL_diehook;
1738f5c4 1609 ENTER;
3280af22
NIS
1610 SAVESPTR(PL_diehook);
1611 PL_diehook = Nullsv;
20cec16a 1612 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1613 LEAVE;
1614 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1615 dSP;
774d564b
PP
1616 SV *msg;
1617
1618 ENTER;
3a1f2dc9 1619 save_re_context();
9983fa3c
GS
1620 if (message) {
1621 msg = newSVpvn(message, msglen);
1622 SvREADONLY_on(msg);
1623 SAVEFREESV(msg);
1624 }
1625 else {
1626 msg = ERRSV;
1627 }
20cec16a 1628
e788e7d3 1629 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1630 PUSHMARK(SP);
1738f5c4 1631 XPUSHs(msg);
20cec16a 1632 PUTBACK;
864dbfa3 1633 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1634 POPSTACK;
774d564b 1635 LEAVE;
20cec16a 1636 }
748a9306 1637 }
3280af22 1638 if (PL_in_eval) {
06bf62c7 1639 PL_restartop = die_where(message, msglen);
6224f72b 1640 JMPENV_JUMP(3);
a0d0e21e 1641 }
d175a3f0
GS
1642 {
1643#ifdef USE_SFIO
1644 /* SFIO can really mess with your errno */
1645 int e = errno;
1646#endif
bf49b057
GS
1647 PerlIO *serr = Perl_error_log;
1648
1649 PerlIO_write(serr, message, msglen);
1650 (void)PerlIO_flush(serr);
d175a3f0
GS
1651#ifdef USE_SFIO
1652 errno = e;
1653#endif
1654 }
f86702cc 1655 my_failure_exit();
a687059c
LW
1656}
1657
c5be433b 1658#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1659void
cea2e8a9 1660Perl_croak_nocontext(const char *pat, ...)
a687059c 1661{
cea2e8a9 1662 dTHX;
a687059c 1663 va_list args;
cea2e8a9 1664 va_start(args, pat);
c5be433b 1665 vcroak(pat, &args);
cea2e8a9
GS
1666 /* NOTREACHED */
1667 va_end(args);
1668}
1669#endif /* PERL_IMPLICIT_CONTEXT */
1670
954c1994
GS
1671/*
1672=for apidoc croak
1673
9983fa3c
GS
1674This is the XSUB-writer's interface to Perl's C<die> function.
1675Normally use this function the same way you use the C C<printf>
1676function. See C<warn>.
1677
1678If you want to throw an exception object, assign the object to
1679C<$@> and then pass C<Nullch> to croak():
1680
1681 errsv = get_sv("@", TRUE);
1682 sv_setsv(errsv, exception_object);
1683 croak(Nullch);
954c1994
GS
1684
1685=cut
1686*/
1687
cea2e8a9
GS
1688void
1689Perl_croak(pTHX_ const char *pat, ...)
1690{
1691 va_list args;
1692 va_start(args, pat);
c5be433b 1693 vcroak(pat, &args);
cea2e8a9
GS
1694 /* NOTREACHED */
1695 va_end(args);
1696}
1697
c5be433b
GS
1698void
1699Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1700{
de3bb511 1701 char *message;
748a9306
LW
1702 HV *stash;
1703 GV *gv;
1704 CV *cv;
06bf62c7
GS
1705 SV *msv;
1706 STRLEN msglen;
a687059c 1707
5a844595 1708 msv = vmess(pat, args);
06bf62c7 1709 message = SvPV(msv, msglen);
a687059c 1710
3280af22 1711 if (PL_warnhook) {
cea2e8a9 1712 /* sv_2cv might call Perl_warn() */
11343788 1713 dTHR;
3280af22 1714 SV *oldwarnhook = PL_warnhook;
1738f5c4 1715 ENTER;
3280af22
NIS
1716 SAVESPTR(PL_warnhook);
1717 PL_warnhook = Nullsv;
20cec16a 1718 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1719 LEAVE;
1720 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1721 dSP;
774d564b
PP
1722 SV *msg;
1723
1724 ENTER;
3a1f2dc9 1725 save_re_context();
06bf62c7 1726 msg = newSVpvn(message, msglen);
774d564b
PP
1727 SvREADONLY_on(msg);
1728 SAVEFREESV(msg);
1729
e788e7d3 1730 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1731 PUSHMARK(SP);
774d564b 1732 XPUSHs(msg);
20cec16a 1733 PUTBACK;
864dbfa3 1734 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1735 POPSTACK;
774d564b 1736 LEAVE;
20cec16a
PP
1737 return;
1738 }
748a9306 1739 }
bf49b057
GS
1740 {
1741 PerlIO *serr = Perl_error_log;
1742
1743 PerlIO_write(serr, message, msglen);
a687059c 1744#ifdef LEAKTEST
bf49b057
GS
1745 DEBUG_L(*message == '!'
1746 ? (xstat(message[1]=='!'
1747 ? (message[2]=='!' ? 2 : 1)
1748 : 0)
1749 , 0)
1750 : 0);
a687059c 1751#endif
bf49b057
GS
1752 (void)PerlIO_flush(serr);
1753 }
a687059c 1754}
8d063cd8 1755
c5be433b 1756#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1757void
1758Perl_warn_nocontext(const char *pat, ...)
1759{
1760 dTHX;
1761 va_list args;
1762 va_start(args, pat);
c5be433b 1763 vwarn(pat, &args);
cea2e8a9
GS
1764 va_end(args);
1765}
1766#endif /* PERL_IMPLICIT_CONTEXT */
1767
954c1994
GS
1768/*
1769=for apidoc warn
1770
1771This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1772function the same way you use the C C<printf> function. See
1773C<croak>.
1774
1775=cut
1776*/
1777
cea2e8a9
GS
1778void
1779Perl_warn(pTHX_ const char *pat, ...)
1780{
1781 va_list args;
1782 va_start(args, pat);
c5be433b 1783 vwarn(pat, &args);
cea2e8a9
GS
1784 va_end(args);
1785}
1786
c5be433b
GS
1787#if defined(PERL_IMPLICIT_CONTEXT)
1788void
1789Perl_warner_nocontext(U32 err, const char *pat, ...)
1790{
1791 dTHX;
1792 va_list args;
1793 va_start(args, pat);
1794 vwarner(err, pat, &args);
1795 va_end(args);
1796}
1797#endif /* PERL_IMPLICIT_CONTEXT */
1798
599cee73 1799void
864dbfa3 1800Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1801{
1802 va_list args;
c5be433b
GS
1803 va_start(args, pat);
1804 vwarner(err, pat, &args);
1805 va_end(args);
1806}
1807
1808void
1809Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1810{
1811 dTHR;
599cee73
PM
1812 char *message;
1813 HV *stash;
1814 GV *gv;
1815 CV *cv;
06bf62c7
GS
1816 SV *msv;
1817 STRLEN msglen;
599cee73 1818
5a844595 1819 msv = vmess(pat, args);
06bf62c7 1820 message = SvPV(msv, msglen);
599cee73
PM
1821
1822 if (ckDEAD(err)) {
1823#ifdef USE_THREADS
b900a521 1824 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM
1825#endif /* USE_THREADS */
1826 if (PL_diehook) {
cea2e8a9 1827 /* sv_2cv might call Perl_croak() */
599cee73
PM
1828 SV *olddiehook = PL_diehook;
1829 ENTER;
1830 SAVESPTR(PL_diehook);
1831 PL_diehook = Nullsv;
1832 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1833 LEAVE;
1834 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1835 dSP;
1836 SV *msg;
1837
1838 ENTER;
3a1f2dc9 1839 save_re_context();
06bf62c7 1840 msg = newSVpvn(message, msglen);
599cee73
PM
1841 SvREADONLY_on(msg);
1842 SAVEFREESV(msg);
1843
3a1f2dc9 1844 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM
1845 PUSHMARK(sp);
1846 XPUSHs(msg);
1847 PUTBACK;
864dbfa3 1848 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1849 POPSTACK;
599cee73
PM
1850 LEAVE;
1851 }
1852 }
1853 if (PL_in_eval) {
06bf62c7 1854 PL_restartop = die_where(message, msglen);
599cee73
PM
1855 JMPENV_JUMP(3);
1856 }
bf49b057
GS
1857 {
1858 PerlIO *serr = Perl_error_log;
1859 PerlIO_write(serr, message, msglen);
1860 (void)PerlIO_flush(serr);
1861 }
599cee73
PM
1862 my_failure_exit();
1863
1864 }
1865 else {
1866 if (PL_warnhook) {
cea2e8a9 1867 /* sv_2cv might call Perl_warn() */
599cee73
PM
1868 dTHR;
1869 SV *oldwarnhook = PL_warnhook;
1870 ENTER;
1871 SAVESPTR(PL_warnhook);
1872 PL_warnhook = Nullsv;
1873 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1874 LEAVE;
599cee73
PM
1875 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1876 dSP;
1877 SV *msg;
1878
1879 ENTER;
3a1f2dc9 1880 save_re_context();
06bf62c7 1881 msg = newSVpvn(message, msglen);
599cee73
PM
1882 SvREADONLY_on(msg);
1883 SAVEFREESV(msg);
1884
3a1f2dc9 1885 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM
1886 PUSHMARK(sp);
1887 XPUSHs(msg);
1888 PUTBACK;
864dbfa3 1889 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1890 POPSTACK;
599cee73
PM
1891 LEAVE;
1892 return;
1893 }
1894 }
bf49b057
GS
1895 {
1896 PerlIO *serr = Perl_error_log;
1897 PerlIO_write(serr, message, msglen);
599cee73 1898#ifdef LEAKTEST
bf49b057 1899 DEBUG_L(xstat());
599cee73 1900#endif
bf49b057
GS
1901 (void)PerlIO_flush(serr);
1902 }
599cee73
PM
1903 }
1904}
1905
a0d0e21e 1906#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1907#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1908void
864dbfa3 1909Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1910{
f2517201
GS
1911#ifndef PERL_USE_SAFE_PUTENV
1912 /* most putenv()s leak, so we manipulate environ directly */
79072805 1913 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1914
3280af22 1915 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1916 I32 j;
1917 I32 max;
fe14fcc3
LW
1918 char **tmpenv;
1919
de3bb511 1920 /*SUPPRESS 530*/
fe14fcc3 1921 for (max = i; environ[max]; max++) ;
f2517201
GS
1922 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1923 for (j=0; j<max; j++) { /* copy environment */
1924 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1925 strcpy(tmpenv[j], environ[j]);
1926 }
fe14fcc3
LW
1927 tmpenv[max] = Nullch;
1928 environ = tmpenv; /* tell exec where it is now */
1929 }
a687059c 1930 if (!val) {
f2517201 1931 safesysfree(environ[i]);
a687059c
LW
1932 while (environ[i]) {
1933 environ[i] = environ[i+1];
1934 i++;
1935 }
1936 return;
1937 }
8d063cd8 1938 if (!environ[i]) { /* does not exist yet */
f2517201 1939 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1940 environ[i+1] = Nullch; /* make sure it's null terminated */
1941 }
fe14fcc3 1942 else
f2517201
GS
1943 safesysfree(environ[i]);
1944 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1945
a687059c 1946 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1947
1948#else /* PERL_USE_SAFE_PUTENV */
1949 char *new_env;
1950
1951 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1952 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1953 (void)putenv(new_env);
1954#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1955}
1956
d308986b
GS
1957#else /* WIN32 || __CYGWIN__ */
1958#if defined(__CYGWIN__)
1cab015a
FE
1959/*
1960 * Save environ of perl.exe, currently Cygwin links in separate environ's
1961 * for each exe/dll. Probably should be a member of impure_ptr.
1962 */
1963static char ***Perl_main_environ;
1964
1965EXTERN_C void
1966Perl_my_setenv_init(char ***penviron)
1967{
1968 Perl_main_environ = penviron;
1969}
1970
1971void
0a9fdc5d 1972Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
FE
1973{
1974 /* You can not directly manipulate the environ[] array because
1975 * the routines do some additional work that syncs the Cygwin
1976 * environment with the Windows environment.
1977 */
1978 char *oldstr = environ[setenv_getix(nam)];
1979
1980 if (!val) {
1981 if (!oldstr)
1982 return;
1983 unsetenv(nam);
d702ae42 1984 safesysfree(oldstr);
1cab015a
FE
1985 return;
1986 }
1987 setenv(nam, val, 1);
1988 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1989 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1990 safesysfree(oldstr);
1cab015a 1991}
3e3baf6d 1992#else /* if WIN32 */
68dc0745
PP
1993
1994void
864dbfa3 1995Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1996{
3e3baf6d
TB
1997
1998#ifdef USE_WIN32_RTL_ENV
1999
68dc0745
PP
2000 register char *envstr;
2001 STRLEN namlen = strlen(nam);
3e3baf6d
TB
2002 STRLEN vallen;
2003 char *oldstr = environ[setenv_getix(nam)];
2004
2005 /* putenv() has totally broken semantics in both the Borland
2006 * and Microsoft CRTLs. They either store the passed pointer in
2007 * the environment without making a copy, or make a copy and don't
2008 * free it. And on top of that, they dont free() old entries that
2009 * are being replaced/deleted. This means the caller must
2010 * free any old entries somehow, or we end up with a memory
2011 * leak every time my_setenv() is called. One might think
2012 * one could directly manipulate environ[], like the UNIX code
2013 * above, but direct changes to environ are not allowed when
2014 * calling putenv(), since the RTLs maintain an internal
2015 * *copy* of environ[]. Bad, bad, *bad* stink.
2016 * GSAR 97-06-07
2017 */
68dc0745 2018
3e3baf6d
TB
2019 if (!val) {
2020 if (!oldstr)
2021 return;
2022 val = "";
2023 vallen = 0;
2024 }
2025 else
2026 vallen = strlen(val);
f2517201 2027 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2028 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2029 (void)PerlEnv_putenv(envstr);
3e3baf6d 2030 if (oldstr)
f2517201 2031 safesysfree(oldstr);
3e3baf6d 2032#ifdef _MSC_VER
f2517201 2033 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
2034#endif
2035
2036#else /* !USE_WIN32_RTL_ENV */
2037
ac5c734f
GS
2038 register char *envstr;
2039 STRLEN len = strlen(nam) + 3;
2040 if (!val) {
2041 val = "";
2042 }
2043 len += strlen(val);
2044 New(904, envstr, len, char);
2045 (void)sprintf(envstr,"%s=%s",nam,val);
2046 (void)PerlEnv_putenv(envstr);
2047 Safefree(envstr);
3e3baf6d
TB
2048
2049#endif
2050}
2051
2052#endif /* WIN32 */
1cab015a 2053#endif
3e3baf6d
TB
2054
2055I32
864dbfa3 2056Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
2057{
2058 register I32 i, len = strlen(nam);
2059
2060 for (i = 0; environ[i]; i++) {
2061 if (
2062#ifdef WIN32
2063 strnicmp(environ[i],nam,len) == 0
2064#else
2065 strnEQ(environ[i],nam,len)
2066#endif
2067 && environ[i][len] == '=')
2068 break; /* strnEQ must come first to avoid */
2069 } /* potential SEGV's */
2070 return i;
68dc0745
PP
2071}
2072
a0d0e21e 2073#endif /* !VMS */
378cc40b 2074
16d20bd9 2075#ifdef UNLINK_ALL_VERSIONS
79072805 2076I32
864dbfa3 2077Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2078{
79072805 2079 I32 i;
378cc40b 2080
6ad3d225 2081 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
2082 return i ? 0 : -1;
2083}
2084#endif
2085
7a3f2258 2086/* this is a drop-in replacement for bcopy() */
85e6fe83 2087#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2088char *
7a3f2258 2089Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW
2090{
2091 char *retval = to;
2092
7c0587c8
LW
2093 if (from - to >= 0) {
2094 while (len--)
2095 *to++ = *from++;
2096 }
2097 else {
2098 to += len;
2099 from += len;
2100 while (len--)
faf8582f 2101 *(--to) = *(--from);
7c0587c8 2102 }
378cc40b
LW
2103 return retval;
2104}
ffed7fef 2105#endif
378cc40b 2106
7a3f2258 2107/* this is a drop-in replacement for memset() */
fc36a67e
PP
2108#ifndef HAS_MEMSET
2109void *
7a3f2258 2110Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
2111{
2112 char *retval = loc;
2113
2114 while (len--)
2115 *loc++ = ch;
2116 return retval;
2117}
2118#endif
2119
7a3f2258 2120/* this is a drop-in replacement for bzero() */
7c0587c8 2121#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2122char *
7a3f2258 2123Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW
2124{
2125 char *retval = loc;
2126
2127 while (len--)
2128 *loc++ = 0;
2129 return retval;
2130}
2131#endif
7c0587c8 2132
7a3f2258 2133/* this is a drop-in replacement for memcmp() */
36477c24 2134#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2135I32
7a3f2258 2136Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2137{
36477c24
PP
2138 register U8 *a = (U8 *)s1;
2139 register U8 *b = (U8 *)s2;
79072805 2140 register I32 tmp;
7c0587c8
LW
2141
2142 while (len--) {
36477c24 2143 if (tmp = *a++ - *b++)
7c0587c8
LW
2144 return tmp;
2145 }
2146 return 0;
2147}
36477c24 2148#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2149
fe14fcc3 2150#ifndef HAS_VPRINTF
a687059c 2151
85e6fe83 2152#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2153char *
2154#else
2155int
2156#endif
08105a92 2157vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2158{
2159 FILE fakebuf;
2160
2161 fakebuf._ptr = dest;
2162 fakebuf._cnt = 32767;
35c8bce7
LW
2163#ifndef _IOSTRG
2164#define _IOSTRG 0
2165#endif
a687059c
LW
2166 fakebuf._flag = _IOWRT|_IOSTRG;
2167 _doprnt(pat, args, &fakebuf); /* what a kludge */
2168 (void)putc('\0', &fakebuf);
85e6fe83 2169#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2170 return(dest);
2171#else
2172 return 0; /* perl doesn't use return value */
2173#endif
2174}
2175
fe14fcc3 2176#endif /* HAS_VPRINTF */
a687059c
LW
2177
2178#ifdef MYSWAP
ffed7fef 2179#if BYTEORDER != 0x4321
a687059c 2180short
864dbfa3 2181Perl_my_swap(pTHX_ short s)
a687059c
LW
2182{
2183#if (BYTEORDER & 1) == 0
2184 short result;
2185
2186 result = ((s & 255) << 8) + ((s >> 8) & 255);
2187 return result;
2188#else
2189 return s;
2190#endif
2191}
2192
2193long
864dbfa3 2194Perl_my_htonl(pTHX_ long l)
a687059c
LW
2195{
2196 union {
2197 long result;
ffed7fef 2198 char c[sizeof(long)];
a687059c
LW
2199 } u;
2200
ffed7fef 2201#if BYTEORDER == 0x1234
a687059c
LW
2202 u.c[0] = (l >> 24) & 255;
2203 u.c[1] = (l >> 16) & 255;
2204 u.c[2] = (l >> 8) & 255;
2205 u.c[3] = l & 255;
2206 return u.result;
2207#else
ffed7fef 2208#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2209 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2210#else
79072805
LW
2211 register I32 o;
2212 register I32 s;
a687059c 2213
ffed7fef
LW
2214 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2215 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2216 }
2217 return u.result;
2218#endif
2219#endif
2220}
2221
2222long
864dbfa3 2223Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2224{
2225 union {
2226 long l;
ffed7fef 2227 char c[sizeof(long)];
a687059c
LW
2228 } u;
2229
ffed7fef 2230#if BYTEORDER == 0x1234
a687059c
LW
2231 u.c[0] = (l >> 24) & 255;
2232 u.c[1] = (l >> 16) & 255;
2233 u.c[2] = (l >> 8) & 255;
2234 u.c[3] = l & 255;
2235 return u.l;
2236#else
ffed7fef 2237#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2238 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2239#else
79072805
LW
2240 register I32 o;
2241 register I32 s;
a687059c
LW
2242
2243 u.l = l;
2244 l = 0;
ffed7fef
LW
2245 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2246 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2247 }
2248 return l;
2249#endif
2250#endif
2251}
2252
ffed7fef 2253#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2254#endif /* MYSWAP */
2255
2256/*
2257 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2258 * If these functions are defined,
2259 * the BYTEORDER is neither 0x1234 nor 0x4321.
2260 * However, this is not assumed.
2261 * -DWS
2262 */
2263
2264#define HTOV(name,type) \
2265 type \
ba106d47 2266 name (register type n) \
988174c1
LW
2267 { \
2268 union { \
2269 type value; \
2270 char c[sizeof(type)]; \
2271 } u; \
79072805
LW
2272 register I32 i; \
2273 register I32 s; \
988174c1
LW
2274 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2275 u.c[i] = (n >> s) & 0xFF; \
2276 } \
2277 return u.value; \
2278 }
2279
2280#define VTOH(name,type) \
2281 type \
ba106d47 2282 name (register type n) \
988174c1
LW
2283 { \
2284 union { \
2285 type value; \
2286 char c[sizeof(type)]; \
2287 } u; \
79072805
LW
2288 register I32 i; \
2289 register I32 s; \
988174c1
LW
2290 u.value = n; \
2291 n = 0; \
2292 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2293 n += (u.c[i] & 0xFF) << s; \
2294 } \
2295 return n; \
2296 }
2297
2298#if defined(HAS_HTOVS) && !defined(htovs)
2299HTOV(htovs,short)
2300#endif
2301#if defined(HAS_HTOVL) && !defined(htovl)
2302HTOV(htovl,long)
2303#endif
2304#if defined(HAS_VTOHS) && !defined(vtohs)
2305VTOH(vtohs,short)
2306#endif
2307#if defined(HAS_VTOHL) && !defined(vtohl)
2308VTOH(vtohl,long)
2309#endif
a687059c 2310
5f05dabc 2311 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2312#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2313PerlIO *
864dbfa3 2314Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2315{
2316 int p[2];
8ac85365 2317 register I32 This, that;
d8a83dd3 2318 register Pid_t pid;
79072805 2319 SV *sv;
1738f5c4 2320 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2321 I32 did_pipes = 0;
2322 int pp[2];
a687059c 2323
45bc9206 2324 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2325#ifdef OS2
2326 if (doexec) {
23da6c43 2327 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ
2328 }
2329#endif
8ac85365
NIS
2330 This = (*mode == 'w');
2331 that = !This;
3280af22 2332 if (doexec && PL_tainting) {
bbce6d69
PP
2333 taint_env();
2334 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2335 }
c2267164
IZ
2336 if (PerlProc_pipe(p) < 0)
2337 return Nullfp;
e446cec8
IZ
2338 if (doexec && PerlProc_pipe(pp) >= 0)
2339 did_pipes = 1;
a687059c
LW
2340 while ((pid = (doexec?vfork():fork())) < 0) {
2341 if (errno != EAGAIN) {
6ad3d225 2342 PerlLIO_close(p[This]);
e446cec8
IZ
2343 if (did_pipes) {
2344 PerlLIO_close(pp[0]);
2345 PerlLIO_close(pp[1]);
2346 }
a687059c 2347 if (!doexec)
cea2e8a9 2348 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2349 return Nullfp;
2350 }
2351 sleep(5);
2352 }
2353 if (pid == 0) {
79072805
LW
2354 GV* tmpgv;
2355
30ac6d9b
GS
2356#undef THIS
2357#undef THAT
a687059c 2358#define THIS that
8ac85365 2359#define THAT This
6ad3d225 2360 PerlLIO_close(p[THAT]);
e446cec8
IZ
2361 if (did_pipes) {
2362 PerlLIO_close(pp[0]);
2363#if defined(HAS_FCNTL) && defined(F_SETFD)
2364 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2365#endif
2366 }
a687059c 2367 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2368 PerlLIO_dup2(p[THIS], *mode == 'r');
2369 PerlLIO_close(p[THIS]);
a687059c 2370 }
4435c477 2371#ifndef OS2
a687059c 2372 if (doexec) {
a0d0e21e 2373#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2374 int fd;
2375
2376#ifndef NOFILE
2377#define NOFILE 20
2378#endif
6b88bc9c 2379 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2380 if (fd != pp[1])
2381 PerlLIO_close(fd);
ae986130 2382#endif
e446cec8 2383 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2384 PerlProc__exit(1);
a687059c 2385 }
4435c477 2386#endif /* defined OS2 */
de3bb511 2387 /*SUPPRESS 560*/
155aba94 2388 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2389 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS
2390 PL_forkprocess = 0;
2391 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2392 return Nullfp;
2393#undef THIS
2394#undef THAT
2395 }
62b28dd9 2396 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2397 PerlLIO_close(p[that]);
e446cec8
IZ
2398 if (did_pipes)
2399 PerlLIO_close(pp[1]);
8ac85365 2400 if (p[that] < p[This]) {
6ad3d225
GS
2401 PerlLIO_dup2(p[This], p[that]);
2402 PerlLIO_close(p[This]);
8ac85365 2403 p[This] = p[that];
62b28dd9 2404 }
4755096e 2405 LOCK_FDPID_MUTEX;
3280af22 2406 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2407 UNLOCK_FDPID_MUTEX;
a0d0e21e 2408 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2409 SvIVX(sv) = pid;
3280af22 2410 PL_forkprocess = pid;
e446cec8
IZ
2411 if (did_pipes && pid > 0) {
2412 int errkid;
2413 int n = 0, n1;
2414
2415 while (n < sizeof(int)) {
2416 n1 = PerlLIO_read(pp[0],
2417 (void*)(((char*)&errkid)+n),
2418 (sizeof(int)) - n);
2419 if (n1 <= 0)
2420 break;
2421 n += n1;
2422 }
2f96c702
IZ
2423 PerlLIO_close(pp[0]);
2424 did_pipes = 0;
e446cec8
IZ
2425 if (n) { /* Error */
2426 if (n != sizeof(int))
cea2e8a9 2427 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2428 errno = errkid; /* Propagate errno from kid */
2429 return Nullfp;
2430 }
2431 }
2432 if (did_pipes)
2433 PerlLIO_close(pp[0]);
8ac85365 2434 return PerlIO_fdopen(p[This], mode);
a687059c 2435}
7c0587c8 2436#else
55497cff 2437#if defined(atarist) || defined(DJGPP)
7c0587c8 2438FILE *popen();
760ac839 2439PerlIO *
864dbfa3 2440Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2441{
760ac839 2442 /* Needs work for PerlIO ! */
55497cff 2443 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2444 PERL_FLUSHALL_FOR_CHILD;
55497cff 2445 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2446}
2447#endif
2448
2449#endif /* !DOSISH */
a687059c 2450
748a9306 2451#ifdef DUMP_FDS
35ff7856 2452void
864dbfa3 2453Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2454{
2455 int fd;
2456 struct stat tmpstatbuf;
2457
bf49b057 2458 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2459 for (fd = 0; fd < 32; fd++) {
6ad3d225 2460 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2461 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2462 }
bf49b057 2463 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2464}
35ff7856 2465#endif /* DUMP_FDS */
ae986130 2466
fe14fcc3 2467#ifndef HAS_DUP2
fec02dd3 2468int
ba106d47 2469dup2(int oldfd, int newfd)
a687059c 2470{
a0d0e21e 2471#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2472 if (oldfd == newfd)
2473 return oldfd;
6ad3d225 2474 PerlLIO_close(newfd);
fec02dd3 2475 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2476#else
fc36a67e
PP
2477#define DUP2_MAX_FDS 256
2478 int fdtmp[DUP2_MAX_FDS];
79072805 2479 I32 fdx = 0;
ae986130
LW
2480 int fd;
2481
fe14fcc3 2482 if (oldfd == newfd)
fec02dd3 2483 return oldfd;
6ad3d225 2484 PerlLIO_close(newfd);
fc36a67e 2485 /* good enough for low fd's... */
6ad3d225 2486 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2487 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2488 PerlLIO_close(fd);
fc36a67e
PP
2489 fd = -1;
2490 break;
2491 }
ae986130 2492 fdtmp[fdx++] = fd;
fc36a67e 2493 }
ae986130 2494 while (fdx > 0)
6ad3d225 2495 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2496 return fd;
62b28dd9 2497#endif
a687059c
LW
2498}
2499#endif
2500
64ca3a65 2501#ifndef PERL_MICRO
ff68c719
PP
2502#ifdef HAS_SIGACTION
2503
2504Sighandler_t
864dbfa3 2505Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2506{
2507 struct sigaction act, oact;
2508
2509 act.sa_handler = handler;
2510 sigemptyset(&act.sa_mask);
2511 act.sa_flags = 0;
2512#ifdef SA_RESTART
2513 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2514#endif
85264bed
CS
2515#ifdef SA_NOCLDWAIT
2516 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2517 act.sa_flags |= SA_NOCLDWAIT;
2518#endif
ff68c719 2519 if (sigaction(signo, &act, &oact) == -1)
36477c24 2520 return SIG_ERR;
ff68c719 2521 else
36477c24 2522 return oact.sa_handler;
ff68c719
PP
2523}
2524
2525Sighandler_t
864dbfa3 2526Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2527{
2528 struct sigaction oact;
2529
2530 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2531 return SIG_ERR;
2532 else
2533 return oact.sa_handler;
2534}
2535
2536int
864dbfa3 2537Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2538{
2539 struct sigaction act;
2540
2541 act.sa_handler = handler;
2542 sigemptyset(&act.sa_mask);
2543 act.sa_flags = 0;
2544#ifdef SA_RESTART
2545 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2546#endif
85264bed
CS
2547#ifdef SA_NOCLDWAIT
2548 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2549 act.sa_flags |= SA_NOCLDWAIT;
2550#endif
ff68c719
PP
2551 return sigaction(signo, &act, save);
2552}
2553
2554int
864dbfa3 2555Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2556{
2557 return sigaction(signo, save, (struct sigaction *)NULL);
2558}
2559
2560#else /* !HAS_SIGACTION */
2561
2562Sighandler_t
864dbfa3 2563Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2564{
6ad3d225 2565 return PerlProc_signal(signo, handler);
ff68c719
PP
2566}
2567
2568static int sig_trapped;
2569
2570static
2571Signal_t
4e35701f 2572sig_trap(int signo)
ff68c719
PP
2573{
2574 sig_trapped++;
2575}
2576
2577Sighandler_t
864dbfa3 2578Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2579{
2580 Sighandler_t oldsig;
2581
2582 sig_trapped = 0;
6ad3d225
GS
2583 oldsig = PerlProc_signal(signo, sig_trap);
2584 PerlProc_signal(signo, oldsig);
ff68c719 2585 if (sig_trapped)
7766f137 2586 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719
PP
2587 return oldsig;
2588}
2589
2590int
864dbfa3 2591Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2592{
6ad3d225 2593 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2594 return (*save == SIG_ERR) ? -1 : 0;
2595}
2596
2597int
864dbfa3 2598Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2599{
6ad3d225 2600 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2601}
2602
2603#endif /* !HAS_SIGACTION */
64ca3a65 2604#endif /* !PERL_MICRO */
ff68c719 2605
5f05dabc 2606 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2607#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2608I32
864dbfa3 2609Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2610{
ff68c719 2611 Sigsave_t hstat, istat, qstat;
a687059c 2612 int status;
a0d0e21e 2613 SV **svp;
d8a83dd3
JH
2614 Pid_t pid;
2615 Pid_t pid2;
03136e13
CS
2616 bool close_failed;
2617 int saved_errno;
2618#ifdef VMS
2619 int saved_vaxc_errno;
2620#endif
22fae026
TM
2621#ifdef WIN32
2622 int saved_win32_errno;
2623#endif
a687059c 2624
4755096e 2625 LOCK_FDPID_MUTEX;
3280af22 2626 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2627 UNLOCK_FDPID_MUTEX;
d8a83dd3 2628 pid = SvIVX(*svp);
a0d0e21e 2629 SvREFCNT_dec(*svp);
3280af22 2630 *svp = &PL_sv_undef;
ddcf38b7
IZ
2631#ifdef OS2
2632 if (pid == -1) { /* Opened by popen. */
2633 return my_syspclose(ptr);
2634 }
2635#endif
03136e13
CS
2636 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2637 saved_errno = errno;
2638#ifdef VMS
2639 saved_vaxc_errno = vaxc$errno;
2640#endif
22fae026
TM
2641#ifdef WIN32
2642 saved_win32_errno = GetLastError();
2643#endif
03136e13 2644 }
7c0587c8 2645#ifdef UTS
6ad3d225 2646 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2647#endif
64ca3a65 2648#ifndef PERL_MICRO
ff68c719
PP
2649 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2650 rsignal_save(SIGINT, SIG_IGN, &istat);
2651 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2652#endif
748a9306 2653 do {
1d3434b8
GS
2654 pid2 = wait4pid(pid, &status, 0);
2655 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2656#ifndef PERL_MICRO
ff68c719
PP
2657 rsignal_restore(SIGHUP, &hstat);
2658 rsignal_restore(SIGINT, &istat);
2659 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2660#endif
03136e13
CS
2661 if (close_failed) {
2662 SETERRNO(saved_errno, saved_vaxc_errno);
2663 return -1;
2664 }
1d3434b8 2665 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2666}
4633a7c4
LW
2667#endif /* !DOSISH */
2668
cd39f2b6 2669#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2670I32
d8a83dd3 2671Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2672{
79072805
LW
2673 SV *sv;
2674 SV** svp;
fc36a67e 2675 char spid[TYPE_CHARS(int)];
20188a90
LW
2676
2677 if (!pid)
2678 return -1;
20188a90 2679 if (pid > 0) {
7b0972df 2680 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS
2681 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2682 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2683 *statusp = SvIVX(*svp);
3280af22 2684 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2685 return pid;
2686 }
2687 }
2688 else {
79072805 2689 HE *entry;
20188a90 2690
3280af22 2691 hv_iterinit(PL_pidstatus);
155aba94 2692 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2693 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2694 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2695 *statusp = SvIVX(sv);
7b0972df 2696 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2697 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2698 return pid;
2699 }
2700 }
79072805 2701#ifdef HAS_WAITPID
367f3c24
IZ
2702# ifdef HAS_WAITPID_RUNTIME
2703 if (!HAS_WAITPID_RUNTIME)
2704 goto hard_way;
2705# endif
f55ee38a 2706 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2707#endif
2708#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2709 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2710#endif
2711#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2712 hard_way:
a0d0e21e
LW
2713 {
2714 I32 result;
2715 if (flags)
cea2e8a9 2716 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2717 else {
76e3520e 2718 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2719 pidgone(result,*statusp);
2720 if (result < 0)
2721 *statusp = -1;
2722 }
2723 return result;
a687059c
LW
2724 }
2725#endif
a687059c 2726}
2d7a9237 2727#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2728
7c0587c8 2729void
de3bb511 2730/*SUPPRESS 590*/
d8a83dd3 2731Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2732{
79072805 2733 register SV *sv;
fc36a67e 2734 char spid[TYPE_CHARS(int)];
a687059c 2735
7b0972df 2736 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2737 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2738 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2739 SvIVX(sv) = status;
20188a90 2740 return;
a687059c
LW
2741}
2742
55497cff 2743#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2744int pclose();
ddcf38b7
IZ
2745#ifdef HAS_FORK
2746int /* Cannot prototype with I32
2747 in os2ish.h. */
ba106d47 2748my_syspclose(PerlIO *ptr)
ddcf38b7 2749#else
79072805 2750I32
864dbfa3 2751Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2752#endif
a687059c 2753{
760ac839
LW
2754 /* Needs work for PerlIO ! */
2755 FILE *f = PerlIO_findFILE(ptr);
2756 I32 result = pclose(f);
933fea7f
GS
2757#if defined(DJGPP)
2758 result = (result << 8) & 0xff00;
2759#endif
760ac839
LW
2760 PerlIO_releaseFILE(ptr,f);
2761 return result;
a687059c 2762}
7c0587c8 2763#endif
9f68db38
LW
2764
2765void
864dbfa3 2766Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2767{
79072805 2768 register I32 todo;
08105a92 2769 register const char *frombase = from;
9f68db38
LW
2770
2771 if (len == 1) {
08105a92 2772 register const char c = *from;
9f68db38 2773 while (count-- > 0)
5926133d 2774 *to++ = c;
9f68db38
LW
2775 return;
2776 }
2777 while (count-- > 0) {
2778 for (todo = len; todo > 0; todo--) {
2779 *to++ = *from++;
2780 }
2781 from = frombase;
2782 }
2783}
0f85fab0 2784
463ee0b2 2785U32
65202027 2786Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2787{
2788 long along;
2789
27e2fb84 2790#if CASTFLAGS & 2
34de22dd
LW
2791# define BIGDOUBLE 2147483648.0
2792 if (f >= BIGDOUBLE)
2793 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2794#endif
0f85fab0
LW
2795 if (f >= 0.0)
2796 return (unsigned long)f;
2797 along = (long)f;
2798 return (unsigned long)along;
2799}
ed6116ce 2800# undef BIGDOUBLE
5d94fbed 2801
5d94fbed
AD
2802/* Unfortunately, on some systems the cast_uv() function doesn't
2803 work with the system-supplied definition of ULONG_MAX. The
2804 comparison (f >= ULONG_MAX) always comes out true. It must be a
2805 problem with the compiler constant folding.
2806
2807 In any case, this workaround should be fine on any two's complement
2808 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2809 ccflags.
2810 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2811*/
1eb770ff
PP
2812
2813/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2814 of LONG_(MIN/MAX).
2815 -- Kenneth Albanowski <kjahds@kjahds.com>
2816*/
2817
20cec16a
PP
2818#ifndef MY_UV_MAX
2819# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2820#endif
2821
ed6116ce 2822I32
65202027 2823Perl_cast_i32(pTHX_ NV f)
ed6116ce 2824{
20cec16a
PP
2825 if (f >= I32_MAX)
2826 return (I32) I32_MAX;
2827 if (f <= I32_MIN)
2828 return (I32) I32_MIN;
ed6116ce
LW
2829 return (I32) f;
2830}
a0d0e21e
LW
2831
2832IV
65202027 2833Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2834{
25da4f38
IZ
2835 if (f >= IV_MAX) {
2836 UV uv;
2837
65202027 2838 if (f >= (NV)UV_MAX)
25da4f38
IZ
2839 return (IV) UV_MAX;
2840 uv = (UV) f;
2841 return (IV)uv;
2842 }
20cec16a
PP
2843 if (f <= IV_MIN)
2844 return (IV) IV_MIN;
a0d0e21e
LW
2845 return (IV) f;
2846}
5d94fbed
AD
2847
2848UV
65202027 2849Perl_cast_uv(pTHX_ NV f)
5d94fbed 2850{
20cec16a
PP
2851 if (f >= MY_UV_MAX)
2852 return (UV) MY_UV_MAX;
25da4f38
IZ
2853 if (f < 0) {
2854 IV iv;
2855
2856 if (f < IV_MIN)
2857 return (UV)IV_MIN;
2858 iv = (IV) f;
2859 return (UV) iv;
2860 }
5d94fbed
AD
2861 return (UV) f;
2862}
2863
fe14fcc3 2864#ifndef HAS_RENAME
79072805 2865I32
864dbfa3 2866Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2867{
93a17b20
LW
2868 char *fa = strrchr(a,'/');
2869 char *fb = strrchr(b,'/');
62b28dd9
LW
2870 struct stat tmpstatbuf1;
2871 struct stat tmpstatbuf2;
46fc3d4c 2872 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2873
2874 if (fa)
2875 fa++;
2876 else
2877 fa = a;
2878 if (fb)
2879 fb++;
2880 else
2881 fb = b;
2882 if (strNE(a,b))
2883 return FALSE;
2884 if (fa == a)
46fc3d4c 2885 sv_setpv(tmpsv, ".");
62b28dd9 2886 else
46fc3d4c 2887 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2888 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2889 return FALSE;
2890 if (fb == b)
46fc3d4c 2891 sv_setpv(tmpsv, ".");
62b28dd9 2892 else
46fc3d4c 2893 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2894 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2895 return FALSE;
2896 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2897 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2898}
fe14fcc3
LW
2899#endif /* !HAS_RENAME */
2900
9e24b6e2 2901NV
864dbfa3 2902Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2903{
2904 register char *s = start;
9e24b6e2
JH
2905 register NV rnv = 0.0;
2906 register UV ruv = 0;
252aa082 2907 register bool seenb = FALSE;
9e24b6e2 2908 register bool overflowed = FALSE;
252aa082
JH
2909
2910 for (; len-- && *s; s++) {
2911 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS
2912 if (*s == '_' && len && *retlen
2913 && (s[1] == '0' || s[1] == '1'))
2914 {
2915 --len;
2916 ++s;
2917 }
2918 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
2919 /* Disallow 0bbb0b0bbb... */
2920 seenb = TRUE;
252aa082
JH
2921 continue;
2922 }
2923 else {
2924 dTHR;
627300f0
JH
2925 if (ckWARN(WARN_DIGIT))
2926 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2927 "Illegal binary digit '%c' ignored", *s);
2928 break;
2929 }
9e24b6e2
JH
2930 }
2931 if (!overflowed) {
2932 register UV xuv = ruv << 1;
2933
2934 if ((xuv >> 1) != ruv) {
2935 dTHR;
2936 overflowed = TRUE;
2937 rnv = (NV) ruv;
627300f0
JH
2938 if (ckWARN_d(WARN_OVERFLOW))
2939 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2940 "Integer overflow in binary number");
b21ed0a9
GS
2941 }
2942 else
9e24b6e2
JH
2943 ruv = xuv | (*s - '0');
2944 }
2945 if (overflowed) {
2946 rnv *= 2;
2947 /* If an NV has not enough bits in its mantissa to
2948 * represent an UV this summing of small low-order numbers
2949 * is a waste of time (because the NV cannot preserve
2950 * the low-order bits anyway): we could just remember when
2951 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2952 * right amount. */
9e24b6e2 2953 rnv += (*s - '0');
f248d071 2954 }
4f19785b 2955 }
9e24b6e2
JH
2956 if (!overflowed)
2957 rnv = (NV) ruv;
893fe2c2 2958 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2959#if UVSIZE > 4
893fe2c2
JH
2960 || (!overflowed && ruv > 0xffffffff )
2961#endif
2962 ) {
252aa082 2963 dTHR;
627300f0
JH
2964 if (ckWARN(WARN_PORTABLE))
2965 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2966 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
2967 }
2968 *retlen = s - start;
9e24b6e2 2969 return rnv;
4f19785b 2970}
9e24b6e2
JH
2971
2972NV
864dbfa3 2973Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2974{
2975 register char *s = start;
9e24b6e2
JH
2976 register NV rnv = 0.0;
2977 register UV ruv = 0;
2978 register bool overflowed = FALSE;
252aa082
JH
2979
2980 for (; len-- && *s; s++) {
2981 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS
2982 if (*s == '_' && len && *retlen
2983 && (s[1] >= '0' && s[1] <= '7'))
2984 {
2985 --len;
2986 ++s;
2987 }
252aa082 2988 else {
f84f607d
JH
2989 /* Allow \octal to work the DWIM way (that is, stop scanning
2990 * as soon as non-octal characters are seen, complain only iff
2991 * someone seems to want to use the digits eight and nine). */
252aa082
JH
2992 if (*s == '8' || *s == '9') {
2993 dTHR;
627300f0
JH
2994 if (ckWARN(WARN_DIGIT))
2995 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2996 "Illegal octal digit '%c' ignored", *s);
2997 }
2998 break;
2999 }
55497cff 3000 }
9e24b6e2 3001 if (!overflowed) {
893fe2c2 3002 register UV xuv = ruv << 3;
9e24b6e2
JH
3003
3004 if ((xuv >> 3) != ruv) {
3005 dTHR;
3006 overflowed = TRUE;
3007 rnv = (NV) ruv;
627300f0
JH
3008 if (ckWARN_d(WARN_OVERFLOW))
3009 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3010 "Integer overflow in octal number");
b21ed0a9
GS
3011 }
3012 else
9e24b6e2
JH
3013 ruv = xuv | (*s - '0');
3014 }
3015 if (overflowed) {
3016 rnv *= 8.0;
3017 /* If an NV has not enough bits in its mantissa to
3018 * represent an UV this summing of small low-order numbers
3019 * is a waste of time (because the NV cannot preserve
3020 * the low-order bits anyway): we could just remember when
3021 * did we overflow and in the end just multiply rnv by the
3022 * right amount of 8-tuples. */
3023 rnv += (NV)(*s - '0');
3024 }
fe14fcc3 3025 }
9e24b6e2
JH
3026 if (!overflowed)
3027 rnv = (NV) ruv;
893fe2c2 3028 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3029#if UVSIZE > 4
893fe2c2
JH
3030 || (!overflowed && ruv > 0xffffffff )
3031#endif
3032 ) {
d008e5eb 3033 dTHR;
627300f0
JH
3034 if (ckWARN(WARN_PORTABLE))
3035 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3036 "Octal number > 037777777777 non-portable");
d008e5eb 3037 }
fe14fcc3 3038 *retlen = s - start;
9e24b6e2 3039 return rnv;
fe14fcc3
LW
3040}
3041
9e24b6e2 3042NV
864dbfa3 3043Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
3044{
3045 register char *s = start;
9e24b6e2
JH
3046 register NV rnv = 0.0;
3047 register UV ruv = 0;
252aa082 3048 register bool seenx = FALSE;
9e24b6e2 3049 register bool overflowed = FALSE;
9e24b6e2 3050 char *hexdigit;
fe14fcc3 3051
9e24b6e2
JH
3052 for (; len-- && *s; s++) {
3053 hexdigit = strchr((char *) PL_hexdigit, *s);
3054 if (!hexdigit) {
b21ed0a9
GS
3055 if (*s == '_' && len && *retlen && s[1]
3056 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3057 {
3058 --len;
3059 ++s;
3060 }
3061 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH
3062 /* Disallow 0xxx0x0xxx... */
3063 seenx = TRUE;
252aa082
JH
3064 continue;
3065 }
a0ed51b3 3066 else {
d008e5eb 3067 dTHR;
627300f0
JH
3068 if (ckWARN(WARN_DIGIT))
3069 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3070 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
3071 break;
3072 }
3073 }
9e24b6e2
JH
3074 if (!overflowed) {
3075 register UV xuv = ruv << 4;
3076
3077 if ((xuv >> 4) != ruv) {
3078 dTHR;
3079 overflowed = TRUE;
3080 rnv = (NV) ruv;
627300f0
JH
3081 if (ckWARN_d(WARN_OVERFLOW))
3082 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3083 "Integer overflow in hexadecimal number");
b21ed0a9
GS
3084 }
3085 else
9e24b6e2
JH
3086 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3087 }
3088 if (overflowed) {
3089 rnv *= 16.0;
3090 /* If an NV has not enough bits in its mantissa to
3091 * represent an UV this summing of small low-order numbers
3092 * is a waste of time (because the NV cannot preserve
3093 * the low-order bits anyway): we could just remember when
3094 * did we overflow and in the end just multiply rnv by the
3095 * right amount of 16-tuples. */
3096 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3097 }
6ff81951 3098 }
9e24b6e2
JH
3099 if (!overflowed)
3100 rnv = (NV) ruv;
893fe2c2 3101 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3102#if UVSIZE > 4
893fe2c2
JH
3103 || (!overflowed && ruv > 0xffffffff )
3104#endif
3105 ) {
252aa082 3106 dTHR;
627300f0
JH
3107 if (ckWARN(WARN_PORTABLE))
3108 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
3109 "Hexadecimal number > 0xffffffff non-portable");
3110 }
fe14fcc3 3111 *retlen = s - start;
9e24b6e2 3112 return rnv;
fe14fcc3 3113}
760ac839 3114
491527d0 3115char*
864dbfa3 3116Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
3117{
3118 dTHR;
3119 char *xfound = Nullch;
3120 char *xfailed = Nullch;
0f31cffe 3121 char tmpbuf[MAXPATHLEN];
491527d0
GS
3122 register char *s;
3123 I32 len;
3124 int retval;
3125#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3126# define SEARCH_EXTS ".bat", ".cmd", NULL
3127# define MAX_EXT_LEN 4
3128#endif
3129#ifdef OS2
3130# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3131# define MAX_EXT_LEN 4
3132#endif
3133#ifdef VMS
3134# define SEARCH_EXTS ".pl", ".com", NULL
3135# define MAX_EXT_LEN 4
3136#endif
3137 /* additional extensions to try in each dir if scriptname not found */
3138#ifdef SEARCH_EXTS
3139 char *exts[] = { SEARCH_EXTS };
3140 char **ext = search_ext ? search_ext : exts;
3141 int extidx = 0, i = 0;
3142 char *curext = Nullch;
3143#else
3144# define MAX_EXT_LEN 0
3145#endif
3146
3147 /*
3148 * If dosearch is true and if scriptname does not contain path
3149 * delimiters, search the PATH for scriptname.
3150 *
3151 * If SEARCH_EXTS is also defined, will look for each
3152 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3153 * while searching the PATH.
3154 *
3155 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3156 * proceeds as follows:
3157 * If DOSISH or VMSISH:
3158 * + look for ./scriptname{,.foo,.bar}
3159 * + search the PATH for scriptname{,.foo,.bar}
3160 *
3161 * If !DOSISH:
3162 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3163 * this will not look in '.' if it's not in the PATH)
3164 */
84486fc6 3165 tmpbuf[0] = '\0';
491527d0
GS
3166
3167#ifdef VMS
3168# ifdef ALWAYS_DEFTYPES
3169 len = strlen(scriptname);
3170 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3171 int hasdir, idx = 0, deftypes = 1;
3172 bool seen_dot = 1;
3173
3174 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3175# else
3176 if (dosearch) {
3177 int hasdir, idx = 0, deftypes = 1;
3178 bool seen_dot = 1;
3179
3180 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3181# endif
3182 /* The first time through, just add SEARCH_EXTS to whatever we
3183 * already have, so we can check for default file types. */
3184 while (deftypes ||
84486fc6 3185 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3186 {
3187 if (deftypes) {
3188 deftypes = 0;
84486fc6 3189 *tmpbuf = '\0';
491527d0 3190 }
84486fc6
GS
3191 if ((strlen(tmpbuf) + strlen(scriptname)
3192 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3193 continue; /* don't search dir with too-long name */
84486fc6 3194 strcat(tmpbuf, scriptname);
491527d0
GS
3195#else /* !VMS */
3196
3197#ifdef DOSISH
3198 if (strEQ(scriptname, "-"))
3199 dosearch = 0;
3200 if (dosearch) { /* Look in '.' first. */
3201 char *cur = scriptname;
3202#ifdef SEARCH_EXTS
3203 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3204 while (ext[i])
3205 if (strEQ(ext[i++],curext)) {
3206 extidx = -1; /* already has an ext */
3207 break;
3208 }
3209 do {
3210#endif
3211 DEBUG_p(PerlIO_printf(Perl_debug_log,
3212 "Looking for %s\n",cur));
017f25f1
IZ
3213 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3214 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3215 dosearch = 0;
3216 scriptname = cur;
3217#ifdef SEARCH_EXTS
3218 break;
3219#endif
3220 }
3221#ifdef SEARCH_EXTS
3222 if (cur == scriptname) {
3223 len = strlen(scriptname);
84486fc6 3224 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3225 break;
84486fc6 3226 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3227 }
3228 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3229 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3230#endif
3231 }
3232#endif
3233
cd39f2b6
JH
3234#ifdef MACOS_TRADITIONAL
3235 if (dosearch && !strchr(scriptname, ':') &&
3236 (s = PerlEnv_getenv("Commands")))
3237#else
491527d0
GS
3238 if (dosearch && !strchr(scriptname, '/')
3239#ifdef DOSISH
3240 && !strchr(scriptname, '\\')
3241#endif
cd39f2b6
JH
3242 && (s = PerlEnv_getenv("PATH")))
3243#endif
3244 {
491527d0
GS
3245 bool seen_dot = 0;
3246
3280af22
NIS
3247 PL_bufend = s + strlen(s);
3248 while (s < PL_bufend) {
cd39f2b6
JH
3249#ifdef MACOS_TRADITIONAL
3250 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3251 ',',
3252 &len);
3253#else
491527d0
GS
3254#if defined(atarist) || defined(DOSISH)
3255 for (len = 0; *s
3256# ifdef atarist
3257 && *s != ','
3258# endif
3259 && *s != ';'; len++, s++) {
84486fc6
GS
3260 if (len < sizeof tmpbuf)
3261 tmpbuf[len] = *s;
491527d0 3262 }
84486fc6
GS
3263 if (len < sizeof tmpbuf)
3264 tmpbuf[len] = '\0';
491527d0 3265#else /* ! (atarist || DOSISH) */
3280af22 3266 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3267 ':',
3268 &len);
3269#endif /* ! (atarist || DOSISH) */
cd39f2b6 3270#endif /* MACOS_TRADITIONAL */
3280af22 3271 if (s < PL_bufend)
491527d0 3272 s++;
84486fc6 3273 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3274 continue; /* don't search dir with too-long name */
cd39f2b6
JH
3275#ifdef MACOS_TRADITIONAL
3276 if (len && tmpbuf[len - 1] != ':')
3277 tmpbuf[len++] = ':';
3278#else
491527d0 3279 if (len
61ae2fbf 3280#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3281 && tmpbuf[len - 1] != '/'
3282 && tmpbuf[len - 1] != '\\'
491527d0
GS
3283#endif
3284 )
84486fc6
GS
3285 tmpbuf[len++] = '/';
3286 if (len == 2 && tmpbuf[0] == '.')
491527d0 3287 seen_dot = 1;
cd39f2b6 3288#endif
84486fc6 3289 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3290#endif /* !VMS */
3291
3292#ifdef SEARCH_EXTS
84486fc6 3293 len = strlen(tmpbuf);
491527d0
GS
3294 if (extidx > 0) /* reset after previous loop */
3295 extidx = 0;
3296 do {
3297#endif
84486fc6 3298 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3299 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3300 if (S_ISDIR(PL_statbuf.st_mode)) {
3301 retval = -1;
3302 }
491527d0
GS
3303#ifdef SEARCH_EXTS
3304 } while ( retval < 0 /* not there */
3305 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3306 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3307 );
3308#endif
3309 if (retval < 0)
3310 continue;
3280af22
NIS
3311 if (S_ISREG(PL_statbuf.st_mode)
3312 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3313#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3314 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3315#endif
3316 )
3317 {
84486fc6 3318 xfound = tmpbuf; /* bingo! */
491527d0
GS
3319 break;
3320 }
3321 if (!xfailed)
84486fc6 3322 xfailed = savepv(tmpbuf);
491527d0
GS
3323 }
3324#ifndef DOSISH
017f25f1
IZ
3325 if (!xfound && !seen_dot && !xfailed &&
3326 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3327 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3328#endif
3329 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3330 if (!xfound) {
3331 if (flags & 1) { /* do or die? */
cea2e8a9 3332 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3333 (xfailed ? "execute" : "find"),
3334 (xfailed ? xfailed : scriptname),
3335 (xfailed ? "" : " on PATH"),
3336 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3337 }
3338 scriptname = Nullch;
3339 }
491527d0
GS
3340 if (xfailed)
3341 Safefree(xfailed);
3342 scriptname = xfound;
3343 }
9ccb31f9 3344 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3345}
3346
ba869deb
GS
3347#ifndef PERL_GET_CONTEXT_DEFINED
3348
3349void *
3350Perl_get_context(void)
3351{
3352#if defined(USE_THREADS) || defined(USE_ITHREADS)
3353# ifdef OLD_PTHREADS_API
3354 pthread_addr_t t;
3355 if (pthread_getspecific(PL_thr_key, &t))
3356 Perl_croak_nocontext("panic: pthread_getspecific");
3357 return (void*)t;
3358# else
c44d3fdb
GS
3359# ifdef I_MACH_CTHREADS
3360 return (void*)cthread_data(cthread_self());
3361# else
ba869deb
GS
3362 return (void*)pthread_getspecific(PL_thr_key);
3363# endif
c44d3fdb 3364# endif
ba869deb
GS
3365#else
3366 return (void*)NULL;
3367#endif
3368}
3369
3370void
3371Perl_set_context(void *t)
3372{
3373#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS
3374# ifdef I_MACH_CTHREADS
3375 cthread_set_data(cthread_self(), t);
3376# else
ba869deb
GS
3377 if (pthread_setspecific(PL_thr_key, t))
3378 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3379# endif
ba869deb
GS
3380#endif
3381}
3382
3383#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3384
11343788 3385#ifdef USE_THREADS
ba869deb 3386
12ca11f6
MB
3387#ifdef FAKE_THREADS
3388/* Very simplistic scheduler for now */
3389void
3390schedule(void)
3391{
c7848ba1 3392 thr = thr->i.next_run;
12ca11f6
MB
3393}
3394
3395void
864dbfa3 3396Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3397{
3398 *cp = 0;
3399}
3400
3401void
864dbfa3 3402Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3403{
51dd5992 3404 perl_os_thread t;
12ca11f6
MB
3405 perl_cond cond = *cp;
3406
3407 if (!cond)
3408 return;
3409 t = cond->thread;
3410 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3411 t->i.next_run = thr->i.next_run;
3412 thr->i.next_run->i.prev_run = t;
3413 t->i.prev_run = thr;
3414 thr->i.next_run = t;
3415 thr->i.wait_queue = 0;
12ca11f6
MB
3416 /* Remove from the wait queue */
3417 *cp = cond->next;
3418 Safefree(cond);
3419}
3420
3421void
864dbfa3 3422Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3423{
51dd5992 3424 perl_os_thread t;
12ca11f6
MB
3425 perl_cond cond, cond_next;
3426
3427 for (cond = *cp; cond; cond = cond_next) {
3428 t = cond->thread;
3429 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3430 t->i.next_run = thr->i.next_run;
3431 thr->i.next_run->i.prev_run = t;
3432 t->i.prev_run = thr;
3433 thr->i.next_run = t;
3434 thr->i.wait_queue = 0;
12ca11f6
MB
3435 /* Remove from the wait queue */
3436 cond_next = cond->next;
3437 Safefree(cond);
3438 }
3439 *cp = 0;
3440}
3441
3442void
864dbfa3 3443Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3444{
3445 perl_cond cond;
3446
c7848ba1 3447 if (thr->i.next_run == thr)
cea2e8a9 3448 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3449
0f15f207 3450 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3451 cond->thread = thr;
3452 cond->next = *cp;
3453 *cp = cond;
c7848ba1 3454 thr->i.wait_queue = cond;
12ca11f6 3455 /* Remove ourselves from runnable queue */
c7848ba1
MB
3456 thr->i.next_run->i.prev_run = thr->i.prev_run;
3457 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3458}
3459#endif /* FAKE_THREADS */
3460
f93b4edd 3461MAGIC *
864dbfa3 3462Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3463{
3464 MAGIC *mg;
3465
3466 SvUPGRADE(sv, SVt_PVMG);
3467 mg = mg_find(sv, 'm');
3468 if (!mg) {
3469 condpair_t *cp;
3470
3471 New(53, cp, 1, condpair_t);
3472 MUTEX_INIT(&cp->mutex);
3473 COND_INIT(&cp->owner_cond);
3474 COND_INIT(&cp->cond);
3475 cp->owner = 0;
1feb2720 3476 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB
3477 mg = mg_find(sv, 'm');
3478 if (mg) {
3479 /* someone else beat us to initialising it */
1feb2720 3480 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB
3481 MUTEX_DESTROY(&cp->mutex);
3482 COND_DESTROY(&cp->owner_cond);
3483 COND_DESTROY(&cp->cond);
3484 Safefree(cp);
3485 }
3486 else {
3487 sv_magic(sv, Nullsv, 'm', 0, 0);
3488 mg = SvMAGIC(sv);
3489 mg->mg_ptr = (char *)cp;
565764a8 3490 mg->mg_len = sizeof(cp);
1feb2720 3491 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3492 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3493 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3494 }
3495 }
3496 return mg;
3497}
a863c7d1 3498
3d35f11b 3499SV *
4755096e 3500Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS
3501{
3502 MAGIC *mg;
3503 SV *sv = osv;
3504
631cfb58 3505 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS
3506 if (SvROK(sv)) {
3507 sv = SvRV(sv);
3d35f11b
GS
3508 }
3509
3510 mg = condpair_magic(sv);
3511 MUTEX_LOCK(MgMUTEXP(mg));
3512 if (MgOWNER(mg) == thr)
3513 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3514 else {
3d35f11b
GS
3515 while (MgOWNER(mg))
3516 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3517 MgOWNER(mg) = thr;
4755096e
GS
3518 DEBUG_S(PerlIO_printf(Perl_debug_log,
3519 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS
3520 PTR2UV(thr), PTR2UV(sv));)
3521 MUTEX_UNLOCK(MgMUTEXP(mg));
3522 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3523 }
631cfb58 3524 UNLOCK_SV_LOCK_MUTEX;
4755096e 3525 return sv;
3d35f11b
GS
3526}
3527
a863c7d1 3528/*
199100c8
MB
3529 * Make a new perl thread structure using t as a prototype. Some of the
3530 * fields for the new thread are copied from the prototype thread, t,
3531 * so t should not be running in perl at the time this function is
3532 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3533 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3534 */
52e1cb5e 3535struct perl_thread *
864dbfa3 3536Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3537{
c5be433b 3538#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3539 struct perl_thread *thr;
cea2e8a9 3540#endif
a863c7d1 3541 SV *sv;
199100c8
MB
3542 SV **svp;
3543 I32 i;
3544
79cb57f6 3545 sv = newSVpvn("", 0);
52e1cb5e
JH
3546 SvGROW(sv, sizeof(struct perl_thread) + 1);
3547 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3548 thr = (Thread) SvPVX(sv);
949ced2d 3549#ifdef DEBUGGING
52e1cb5e 3550 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3551 PL_markstack = 0;
3552 PL_scopestack = 0;
3553 PL_savestack = 0;
3554 PL_retstack = 0;
3555 PL_dirty = 0;
3556 PL_localizing = 0;
949ced2d
GS
3557 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3558#else
3559 Zero(thr, 1, struct perl_thread);
3560#endif
199100c8
MB
3561
3562 thr->oursv = sv;
cea2e8a9 3563 init_stacks();
a863c7d1 3564
533c011a 3565 PL_curcop = &PL_compiling;
c5be433b 3566 thr->interp = t->interp;
199100c8 3567 thr->cvcache = newHV();
54b9620d 3568 thr->threadsv = newAV();
a863c7d1 3569 thr->specific = newAV();
79cb57f6 3570 thr->errsv = newSVpvn("", 0);
a863c7d1
MB
3571 thr->flags = THRf_R_JOINABLE;
3572 MUTEX_INIT(&thr->mutex);
199100c8 3573
5c831c24 3574 JMPENV_BOOTSTRAP;
533c011a 3575
faef0170 3576 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3577 PL_restartop = 0;
3578
b099ddc0 3579 PL_statname = NEWSV(66,0);
5a844595 3580 PL_errors = newSVpvn("", 0);
b099ddc0 3581 PL_maxscream = -1;
0b94c7bb
GS
3582 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3583 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3584 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3585 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3586 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3587 PL_regindent = 0;
3588 PL_reginterp_cnt = 0;
3589 PL_lastscream = Nullsv;
3590 PL_screamfirst = 0;
3591 PL_screamnext = 0;
3592 PL_reg_start_tmp = 0;
3593 PL_reg_start_tmpl = 0;
14ed4b74 3594 PL_reg_poscache = Nullch;
b099ddc0
GS
3595
3596 /* parent thread's data needs to be locked while we make copy */
3597 MUTEX_LOCK(&t->mutex);
3598
14dd3ad8 3599#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3600 PL_protect = t->Tprotect;
14dd3ad8 3601#endif
312caa8e 3602
b099ddc0
GS
3603 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3604 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3605 PL_curstash = t->Tcurstash; /* always be set to main? */
3606