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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 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 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 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 192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca 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 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 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 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 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 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 465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
ff4fed7c 469Perl_new_ctype(pTHX_ char *newctype)
ef7eada9 470{
36477c24 471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69 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 484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69 486
487/*
ff4fed7c
VK		 488 * Standardize the locale name from a string returned by 'setlocale'.
489 *
490 * The standard return value of setlocale() is either
491 * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
492 * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL
493 * (the space-separated values represent the various sublocales,
494 * in some unspecificed order)
495 *
496 * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n",
497 * which is harmful for further use of the string in setlocale().
498 *
499 */
500STATIC char *
501S_stdize_locale(pTHX_ char *locs)
502{
503 char *s;
504 bool okay = TRUE;
505
506 if ((s = strchr(locs, '='))) {
507 char *t;
508
509 okay = FALSE;
510 if ((t = strchr(s, '.'))) {
511 char *u;
512
513 if ((u = strchr(t, '\n'))) {
514
515 if (u[1] == 0) {
516 STRLEN len = u - s;
a528dad0 517 Move(s + 1, locs, len, char);
ff4fed7c
VK		 518 locs[len] = 0;
519 okay = TRUE;
520 }
521 }
522 }
523 }
524
525 if (!okay)
526 Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
527
528 return locs;
529}
530
531/*
bbce6d69 532 * Set up for a new collation locale.
533 */
534void
ff4fed7c 535Perl_new_collate(pTHX_ char *newcoll)
bbce6d69 536{
36477c24 537#ifdef USE_LOCALE_COLLATE
538
bbce6d69 539 if (! newcoll) {
3280af22
NIS		 540 if (PL_collation_name) {
541 ++PL_collation_ix;
542 Safefree(PL_collation_name);
543 PL_collation_name = NULL;
bbce6d69 544 }
ff4fed7c
VK		 545 PL_collation_standard = TRUE;
546 PL_collxfrm_base = 0;
547 PL_collxfrm_mult = 2;
bbce6d69 548 return;
549 }
550
3280af22
NIS		 551 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
552 ++PL_collation_ix;
553 Safefree(PL_collation_name);
ff4fed7c 554 PL_collation_name = stdize_locale(savepv(newcoll));
3280af22 555 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 556
bbce6d69 557 {
558 /* 2: at most so many chars ('a', 'b'). */
559 /* 50: surely no system expands a char more. */
560#define XFRMBUFSIZE (2 * 50)
561 char xbuf[XFRMBUFSIZE];
562 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
563 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
564 SSize_t mult = fb - fa;
565 if (mult < 1)
cea2e8a9 566 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 567 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
568 PL_collxfrm_mult = mult;
bbce6d69 569 }
bbce6d69 570 }
bbce6d69 571
36477c24 572#endif /* USE_LOCALE_COLLATE */
573}
bbce6d69 574
097ee67d 575void
51371543 576Perl_set_numeric_radix(pTHX)
097ee67d
JH		 577{
578#ifdef USE_LOCALE_NUMERIC
579# ifdef HAS_LOCALECONV
580 struct lconv* lc;
581
582 lc = localeconv();
583 if (lc && lc->decimal_point)
584 /* We assume that decimal separator aka the radix
585 * character is always a single character. If it
586 * ever is a string, this needs to be rethunk. */
587 PL_numeric_radix = *lc->decimal_point;
588 else
589 PL_numeric_radix = 0;
590# endif /* HAS_LOCALECONV */
097ee67d
JH		 591#endif /* USE_LOCALE_NUMERIC */
592}
593
bbce6d69 594/*
595 * Set up for a new numeric locale.
596 */
597void
ff4fed7c 598Perl_new_numeric(pTHX_ char *newnum)
bbce6d69 599{
36477c24 600#ifdef USE_LOCALE_NUMERIC
601
bbce6d69 602 if (! newnum) {
3280af22
NIS		 603 if (PL_numeric_name) {
604 Safefree(PL_numeric_name);
605 PL_numeric_name = NULL;
bbce6d69 606 }
ff4fed7c
VK		 607 PL_numeric_standard = TRUE;
608 PL_numeric_local = TRUE;
bbce6d69 609 return;
610 }
611
3280af22
NIS		 612 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
613 Safefree(PL_numeric_name);
ff4fed7c 614 PL_numeric_name = stdize_locale(savepv(newnum));
3280af22
NIS		 615 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
616 PL_numeric_local = TRUE;
51371543 617 set_numeric_radix();
bbce6d69 618 }
36477c24 619
620#endif /* USE_LOCALE_NUMERIC */
bbce6d69 621}
622
623void
864dbfa3 624Perl_set_numeric_standard(pTHX)
bbce6d69 625{
5f05dabc 626#ifdef USE_LOCALE_NUMERIC
627
3280af22 628 if (! PL_numeric_standard) {
bbce6d69 629 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 630 PL_numeric_standard = TRUE;
631 PL_numeric_local = FALSE;
ff4fed7c 632 set_numeric_radix();
bbce6d69 633 }
5f05dabc 634
635#endif /* USE_LOCALE_NUMERIC */
bbce6d69 636}
637
638void
864dbfa3 639Perl_set_numeric_local(pTHX)
bbce6d69 640{
5f05dabc 641#ifdef USE_LOCALE_NUMERIC
642
3280af22
NIS		 643 if (! PL_numeric_local) {
644 setlocale(LC_NUMERIC, PL_numeric_name);
645 PL_numeric_standard = FALSE;
646 PL_numeric_local = TRUE;
51371543 647 set_numeric_radix();
bbce6d69 648 }
bbce6d69 649
36477c24 650#endif /* USE_LOCALE_NUMERIC */
5f05dabc 651}
36477c24 652
36477c24 653/*
654 * Initialize locale awareness.
655 */
f0c5b223 656int
864dbfa3 657Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 658{
659 int ok = 1;
660 /* returns
661 * 1 = set ok or not applicable,
662 * 0 = fallback to C locale,
663 * -1 = fallback to C locale failed
664 */
bbce6d69 665
36477c24 666#ifdef USE_LOCALE
bbce6d69 667
36477c24 668#ifdef USE_LOCALE_CTYPE
bbce6d69 669 char *curctype = NULL;
36477c24 670#endif /* USE_LOCALE_CTYPE */
671#ifdef USE_LOCALE_COLLATE
bbce6d69 672 char *curcoll = NULL;
36477c24 673#endif /* USE_LOCALE_COLLATE */
674#ifdef USE_LOCALE_NUMERIC
bbce6d69 675 char *curnum = NULL;
36477c24 676#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 677#ifdef __GLIBC__
678 char *language = PerlEnv_getenv("LANGUAGE");
679#endif
76e3520e
GS		 680 char *lc_all = PerlEnv_getenv("LC_ALL");
681 char *lang = PerlEnv_getenv("LANG");
bbce6d69 682 bool setlocale_failure = FALSE;
f0c5b223 683
02b32252
CS		 684#ifdef LOCALE_ENVIRON_REQUIRED
685
686 /*
687 * Ultrix setlocale(..., "") fails if there are no environment
688 * variables from which to get a locale name.
689 */
690
691 bool done = FALSE;
692
693#ifdef LC_ALL
694 if (lang) {
695 if (setlocale(LC_ALL, ""))
696 done = TRUE;
697 else
698 setlocale_failure = TRUE;
699 }
0644c9cb 700 if (!setlocale_failure) {
02b32252 701#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 702 if (! (curctype =
703 setlocale(LC_CTYPE,
704 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 705 ? "" : Nullch)))
706 setlocale_failure = TRUE;
f4182098
AB		 707 else
708 curctype = savepv(curctype);
02b32252
CS		 709#endif /* USE_LOCALE_CTYPE */
710#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 711 if (! (curcoll =
712 setlocale(LC_COLLATE,
713 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 714 ? "" : Nullch)))
715 setlocale_failure = TRUE;
f4182098
AB		 716 else
717 curcoll = savepv(curcoll);
02b32252
CS		 718#endif /* USE_LOCALE_COLLATE */
719#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 720 if (! (curnum =
721 setlocale(LC_NUMERIC,
722 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 723 ? "" : Nullch)))
724 setlocale_failure = TRUE;
f4182098
AB		 725 else
726 curnum = savepv(curnum);
02b32252
CS		 727#endif /* USE_LOCALE_NUMERIC */
728 }
729
0644c9cb 730#endif /* LC_ALL */
02b32252 731
0644c9cb 732#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 733
0644c9cb 734#ifdef LC_ALL
bbce6d69 735 if (! setlocale(LC_ALL, ""))
736 setlocale_failure = TRUE;
0644c9cb 737#endif /* LC_ALL */
bbce6d69 738
0644c9cb 739 if (!setlocale_failure) {
36477c24 740#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 741 if (! (curctype = setlocale(LC_CTYPE, "")))
742 setlocale_failure = TRUE;
f4182098
AB		 743 else
744 curctype = savepv(curctype);
36477c24 745#endif /* USE_LOCALE_CTYPE */
746#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 747 if (! (curcoll = setlocale(LC_COLLATE, "")))
748 setlocale_failure = TRUE;
f4182098
AB		 749 else
750 curcoll = savepv(curcoll);
36477c24 751#endif /* USE_LOCALE_COLLATE */
752#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 753 if (! (curnum = setlocale(LC_NUMERIC, "")))
754 setlocale_failure = TRUE;
f4182098
AB		 755 else
756 curnum = savepv(curnum);
36477c24 757#endif /* USE_LOCALE_NUMERIC */
0644c9cb 758 }
02b32252 759
5f05dabc 760 if (setlocale_failure) {
761 char *p;
762 bool locwarn = (printwarn > 1 ||
155aba94
GS		 763 (printwarn &&
764 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 765
5f05dabc 766 if (locwarn) {
767#ifdef LC_ALL
768
bf49b057 769 PerlIO_printf(Perl_error_log,
5f05dabc 770 "perl: warning: Setting locale failed.\n");
771
772#else /* !LC_ALL */
773
bf49b057 774 PerlIO_printf(Perl_error_log,
bbce6d69 775 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 776#ifdef USE_LOCALE_CTYPE
bbce6d69 777 if (! curctype)
bf49b057 778 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 779#endif /* USE_LOCALE_CTYPE */
780#ifdef USE_LOCALE_COLLATE
bbce6d69 781 if (! curcoll)
bf49b057 782 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 783#endif /* USE_LOCALE_COLLATE */
784#ifdef USE_LOCALE_NUMERIC
bbce6d69 785 if (! curnum)
bf49b057 786 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 787#endif /* USE_LOCALE_NUMERIC */
bf49b057 788 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 789
5f05dabc 790#endif /* LC_ALL */
791
bf49b057 792 PerlIO_printf(Perl_error_log,
bbce6d69 793 "perl: warning: Please check that your locale settings:\n");
ef7eada9 794
3aeabbed 795#ifdef __GLIBC__
bf49b057 796 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 797 "\tLANGUAGE = %c%s%c,\n",
798 language ? '"' : '(',
799 language ? language : "unset",
800 language ? '"' : ')');
801#endif
802
bf49b057 803 PerlIO_printf(Perl_error_log,
bbce6d69 804 "\tLC_ALL = %c%s%c,\n",
805 lc_all ? '"' : '(',
806 lc_all ? lc_all : "unset",
807 lc_all ? '"' : ')');
5f05dabc 808
809 {
810 char **e;
811 for (e = environ; *e; e++) {
812 if (strnEQ(*e, "LC_", 3)
813 && strnNE(*e, "LC_ALL=", 7)
814 && (p = strchr(*e, '=')))
bf49b057 815 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 816 (int)(p - *e), *e, p + 1);
5f05dabc 817 }
818 }
819
bf49b057 820 PerlIO_printf(Perl_error_log,
bbce6d69 821 "\tLANG = %c%s%c\n",
5f05dabc 822 lang ? '"' : '(',
bbce6d69 823 lang ? lang : "unset",
824 lang ? '"' : ')');
ef7eada9 825
bf49b057 826 PerlIO_printf(Perl_error_log,
bbce6d69 827 " are supported and installed on your system.\n");
5f05dabc 828 }
ef7eada9 829
5f05dabc 830#ifdef LC_ALL
831
832 if (setlocale(LC_ALL, "C")) {
833 if (locwarn)
bf49b057 834 PerlIO_printf(Perl_error_log,
5f05dabc 835 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 836 ok = 0;
ef7eada9 837 }
5f05dabc 838 else {
839 if (locwarn)
bf49b057 840 PerlIO_printf(Perl_error_log,
5f05dabc 841 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
842 ok = -1;
843 }
bbce6d69 844
5f05dabc 845#else /* ! LC_ALL */
846
847 if (0
36477c24 848#ifdef USE_LOCALE_CTYPE
5f05dabc 849 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 850#endif /* USE_LOCALE_CTYPE */
851#ifdef USE_LOCALE_COLLATE
5f05dabc 852 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 853#endif /* USE_LOCALE_COLLATE */
854#ifdef USE_LOCALE_NUMERIC
5f05dabc 855 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 856#endif /* USE_LOCALE_NUMERIC */
5f05dabc 857 )
858 {
859 if (locwarn)
bf49b057 860 PerlIO_printf(Perl_error_log,
5f05dabc 861 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
862 ok = -1;
bbce6d69 863 }
5f05dabc 864
bbce6d69 865#endif /* ! LC_ALL */
5f05dabc 866
867#ifdef USE_LOCALE_CTYPE
f4182098 868 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc 869#endif /* USE_LOCALE_CTYPE */
870#ifdef USE_LOCALE_COLLATE
f4182098 871 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc 872#endif /* USE_LOCALE_COLLATE */
873#ifdef USE_LOCALE_NUMERIC
f4182098 874 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 875#endif /* USE_LOCALE_NUMERIC */
ef7eada9 876 }
f4182098 877 else {
ef7eada9 878
36477c24 879#ifdef USE_LOCALE_CTYPE
864dbfa3 880 new_ctype(curctype);
36477c24 881#endif /* USE_LOCALE_CTYPE */
bbce6d69 882
36477c24 883#ifdef USE_LOCALE_COLLATE
864dbfa3 884 new_collate(curcoll);
36477c24 885#endif /* USE_LOCALE_COLLATE */
bbce6d69 886
36477c24 887#ifdef USE_LOCALE_NUMERIC
864dbfa3 888 new_numeric(curnum);
36477c24 889#endif /* USE_LOCALE_NUMERIC */
f4182098 890 }
ef7eada9 891
36477c24 892#endif /* USE_LOCALE */
ef7eada9 893
f4182098
AB		 894#ifdef USE_LOCALE_CTYPE
895 if (curctype != NULL)
896 Safefree(curctype);
897#endif /* USE_LOCALE_CTYPE */
898#ifdef USE_LOCALE_COLLATE
899 if (curcoll != NULL)
900 Safefree(curcoll);
901#endif /* USE_LOCALE_COLLATE */
902#ifdef USE_LOCALE_NUMERIC
903 if (curnum != NULL)
904 Safefree(curnum);
905#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB		 906 return ok;
907}
908
bbce6d69 909/* Backwards compatibility. */
910int
864dbfa3 911Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 912{
864dbfa3 913 return init_i18nl10n(printwarn);
bbce6d69 914}
ef7eada9 915
36477c24 916#ifdef USE_LOCALE_COLLATE
ef7eada9 917
bbce6d69 918/*
919 * mem_collxfrm() is a bit like strxfrm() but with two important
920 * differences. First, it handles embedded NULs. Second, it allocates
921 * a bit more memory than needed for the transformed data itself.
922 * The real transformed data begins at offset sizeof(collationix).
923 * Please see sv_collxfrm() to see how this is used.
924 */
925char *
864dbfa3 926Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 927{
928 char *xbuf;
76e3520e 929 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 930
931 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
932 /* the +1 is for the terminating NUL. */
933
3280af22 934 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 935 New(171, xbuf, xAlloc, char);
bbce6d69 936 if (! xbuf)
937 goto bad;
938
3280af22
NIS		 939 *(U32*)xbuf = PL_collation_ix;
940 xout = sizeof(PL_collation_ix);
bbce6d69 941 for (xin = 0; xin < len; ) {
942 SSize_t xused;
943
944 for (;;) {
76e3520e 945 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 946 if (xused == -1)
947 goto bad;
76e3520e 948 if (xused < xAlloc - xout)
bbce6d69 949 break;
76e3520e
GS		 950 xAlloc = (2 * xAlloc) + 1;
951 Renew(xbuf, xAlloc, char);
bbce6d69 952 if (! xbuf)
953 goto bad;
954 }
ef7eada9 955
bbce6d69 956 xin += strlen(s + xin) + 1;
957 xout += xused;
958
959 /* Embedded NULs are understood but silently skipped
960 * because they make no sense in locale collation. */
961 }
ef7eada9 962
bbce6d69 963 xbuf[xout] = '\0';
3280af22 964 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 965 return xbuf;
966
967 bad:
968 Safefree(xbuf);
969 *xlen = 0;
970 return NULL;
ef7eada9
JH		 971}
972
36477c24 973#endif /* USE_LOCALE_COLLATE */
bbce6d69 974
cf93c79d
IZ		 975#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
976
977/* As a space optimization, we do not compile tables for strings of length
978 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
979 special-cased in fbm_instr().
980
981 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
982
954c1994
GS		 983/*
984=for apidoc fbm_compile
985
986Analyses the string in order to make fast searches on it using fbm_instr()
987-- the Boyer-Moore algorithm.
988
989=cut
990*/
991
378cc40b 992void
7506f9c3 993Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 994{
942e002e
GS		 995 register U8 *s;
996 register U8 *table;
79072805 997 register U32 i;
0b71040e 998 STRLEN len;
79072805
LW		 999 I32 rarest = 0;
1000 U32 frequency = 256;
1001
cf93c79d
IZ		 1002 if (flags & FBMcf_TAIL)
1003 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 1004 s = (U8*)SvPV_force(sv, len);
07f14f54 1005 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 1006 if (len == 0) /* TAIL might be on on a zero-length string. */
1007 return;
02128f11 1008 if (len > 2) {
7506f9c3 1009 U8 mlen;
cf93c79d
IZ		 1010 unsigned char *sb;
1011
7506f9c3 1012 if (len > 255)
cf93c79d 1013 mlen = 255;
7506f9c3
GS		 1014 else
1015 mlen = (U8)len;
1016 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 1017 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 1018 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
1019 memset((void*)table, mlen, 256);
1020 table[-1] = (U8)flags;
02128f11 1021 i = 0;
7506f9c3 1022 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 1023 while (s >= sb) {
1024 if (table[*s] == mlen)
7506f9c3 1025 table[*s] = (U8)i;
cf93c79d
IZ		 1026 s--, i++;
1027 }
378cc40b 1028 }
bbce6d69 1029 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 1030 SvVALID_on(sv);
378cc40b 1031
463ee0b2 1032 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 1033 for (i = 0; i < len; i++) {
22c35a8c 1034 if (PL_freq[s[i]] < frequency) {
bbce6d69 1035 rarest = i;
22c35a8c 1036 frequency = PL_freq[s[i]];
378cc40b
LW		 1037 }
1038 }
79072805
LW		 1039 BmRARE(sv) = s[rarest];
1040 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 1041 BmUSEFUL(sv) = 100; /* Initial value */
1042 if (flags & FBMcf_TAIL)
1043 SvTAIL_on(sv);
7506f9c3
GS		 1044 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1045 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 1046}
1047
cf93c79d
IZ		 1048/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1049/* If SvTAIL is actually due to \Z or \z, this gives false positives
1050 if multiline */
1051
954c1994
GS		 1052/*
1053=for apidoc fbm_instr
1054
1055Returns the location of the SV in the string delimited by C<str> and
1056C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1057does not have to be fbm_compiled, but the search will not be as fast
1058then.
1059
1060=cut
1061*/
1062
378cc40b 1063char *
864dbfa3 1064Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1065{
a687059c 1066 register unsigned char *s;
cf93c79d
IZ		 1067 STRLEN l;
1068 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1069 register STRLEN littlelen = l;
1070 register I32 multiline = flags & FBMrf_MULTILINE;
1071
1072 if (bigend - big < littlelen) {
cf93c79d
IZ		 1073 if ( SvTAIL(littlestr)
1074 && (bigend - big == littlelen - 1)
1075 && (littlelen == 1
12ae5dfc
JH		 1076 || (*big == *little &&
1077 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1078 return (char*)big;
1079 return Nullch;
1080 }
378cc40b 1081
cf93c79d 1082 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1083
1084 if (littlelen == 1) {
1085 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1086 /* Know that bigend != big. */
1087 if (bigend[-1] == '\n')
1088 return (char *)(bigend - 1);
1089 return (char *) bigend;
1090 }
1091 s = big;
1092 while (s < bigend) {
1093 if (*s == *little)
1094 return (char *)s;
1095 s++;
1096 }
1097 if (SvTAIL(littlestr))
1098 return (char *) bigend;
1099 return Nullch;
1100 }
1101 if (!littlelen)
1102 return (char*)big; /* Cannot be SvTAIL! */
1103
1104 /* littlelen is 2 */
1105 if (SvTAIL(littlestr) && !multiline) {
1106 if (bigend[-1] == '\n' && bigend[-2] == *little)
1107 return (char*)bigend - 2;
1108 if (bigend[-1] == *little)
1109 return (char*)bigend - 1;
1110 return Nullch;
1111 }
1112 {
1113 /* This should be better than FBM if c1 == c2, and almost
1114 as good otherwise: maybe better since we do less indirection.
1115 And we save a lot of memory by caching no table. */
1116 register unsigned char c1 = little[0];
1117 register unsigned char c2 = little[1];
1118
1119 s = big + 1;
1120 bigend--;
1121 if (c1 != c2) {
1122 while (s <= bigend) {
1123 if (s[0] == c2) {
1124 if (s[-1] == c1)
1125 return (char*)s - 1;
1126 s += 2;
1127 continue;
3fe6f2dc 1128 }
cf93c79d
IZ		 1129 next_chars:
1130 if (s[0] == c1) {
1131 if (s == bigend)
1132 goto check_1char_anchor;
1133 if (s[1] == c2)
1134 return (char*)s;
1135 else {
1136 s++;
1137 goto next_chars;
1138 }
1139 }
1140 else
1141 s += 2;
1142 }
1143 goto check_1char_anchor;
1144 }
1145 /* Now c1 == c2 */
1146 while (s <= bigend) {
1147 if (s[0] == c1) {
1148 if (s[-1] == c1)
1149 return (char*)s - 1;
1150 if (s == bigend)
1151 goto check_1char_anchor;
1152 if (s[1] == c1)
1153 return (char*)s;
1154 s += 3;
02128f11 1155 }
c277df42 1156 else
cf93c79d 1157 s += 2;
c277df42 1158 }
c277df42 1159 }
cf93c79d
IZ		 1160 check_1char_anchor: /* One char and anchor! */
1161 if (SvTAIL(littlestr) && (*bigend == *little))
1162 return (char *)bigend; /* bigend is already decremented. */
1163 return Nullch;
d48672a2 1164 }
cf93c79d 1165 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1166 s = bigend - littlelen;
7506f9c3 1167 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1168 /* Automatically of length > 2 */
1169 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1170 {
bbce6d69 1171 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1172 }
1173 if (s[1] == *little
1174 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1175 {
cf93c79d 1176 return (char*)s + 1; /* how sweet it is */
7506f9c3 1177 }
02128f11
IZ		 1178 return Nullch;
1179 }
cf93c79d
IZ		 1180 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1181 char *b = ninstr((char*)big,(char*)bigend,
1182 (char*)little, (char*)little + littlelen);
1183
1184 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1185 /* Chop \n from littlestr: */
1186 s = bigend - littlelen + 1;
7506f9c3
GS		 1187 if (*s == *little
1188 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1189 {
3fe6f2dc 1190 return (char*)s;
7506f9c3 1191 }
cf93c79d 1192 return Nullch;
a687059c 1193 }
cf93c79d 1194 return b;
a687059c 1195 }
cf93c79d
IZ		 1196
1197 { /* Do actual FBM. */
1198 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1199 register unsigned char *oldlittle;
1200
1201 if (littlelen > bigend - big)
1202 return Nullch;
1203 --littlelen; /* Last char found by table lookup */
1204
1205 s = big + littlelen;
1206 little += littlelen; /* last char */
1207 oldlittle = little;
1208 if (s < bigend) {
1209 register I32 tmp;
1210
1211 top2:
1212 /*SUPPRESS 560*/
7506f9c3 1213 if ((tmp = table[*s])) {
62b28dd9 1214#ifdef POINTERRIGOR
cf93c79d
IZ		 1215 if (bigend - s > tmp) {
1216 s += tmp;
1217 goto top2;
1218 }
bbce6d69 1219 s += tmp;
62b28dd9 1220#else
cf93c79d 1221 if ((s += tmp) < bigend)
62b28dd9 1222 goto top2;
cf93c79d
IZ		 1223#endif
1224 goto check_end;
1225 }
1226 else { /* less expensive than calling strncmp() */
1227 register unsigned char *olds = s;
1228
1229 tmp = littlelen;
1230
1231 while (tmp--) {
1232 if (*--s == *--little)
1233 continue;
cf93c79d
IZ		 1234 s = olds + 1; /* here we pay the price for failure */
1235 little = oldlittle;
1236 if (s < bigend) /* fake up continue to outer loop */
1237 goto top2;
1238 goto check_end;
1239 }
1240 return (char *)s;
a687059c 1241 }
378cc40b 1242 }
cf93c79d
IZ		 1243 check_end:
1244 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1245 && memEQ((char *)(bigend - littlelen),
1246 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1247 return (char*)bigend - littlelen;
1248 return Nullch;
378cc40b 1249 }
378cc40b
LW		 1250}
1251
c277df42
IZ		 1252/* start_shift, end_shift are positive quantities which give offsets
1253 of ends of some substring of bigstr.
1254 If `last' we want the last occurence.
1255 old_posp is the way of communication between consequent calls if
1256 the next call needs to find the .
1257 The initial *old_posp should be -1.
cf93c79d
IZ		 1258
1259 Note that we take into account SvTAIL, so one can get extra
1260 optimizations if _ALL flag is set.
c277df42
IZ		 1261 */
1262
cf93c79d
IZ		 1263/* If SvTAIL is actually due to \Z or \z, this gives false positives
1264 if PL_multiline. In fact if !PL_multiline the autoritative answer
1265 is not supported yet. */
1266
378cc40b 1267char *
864dbfa3 1268Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1269{
5c0ca799 1270 dTHR;
a687059c
LW		 1271 register unsigned char *s, *x;
1272 register unsigned char *big;
79072805
LW		 1273 register I32 pos;
1274 register I32 previous;
1275 register I32 first;
a687059c 1276 register unsigned char *little;
c277df42 1277 register I32 stop_pos;
a687059c 1278 register unsigned char *littleend;
c277df42 1279 I32 found = 0;
378cc40b 1280
c277df42 1281 if (*old_posp == -1
3280af22 1282 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1283 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1284 cant_find:
1285 if ( BmRARE(littlestr) == '\n'
1286 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1287 little = (unsigned char *)(SvPVX(littlestr));
1288 littleend = little + SvCUR(littlestr);
1289 first = *little++;
1290 goto check_tail;
1291 }
378cc40b 1292 return Nullch;
cf93c79d
IZ		 1293 }
1294
463ee0b2 1295 little = (unsigned char *)(SvPVX(littlestr));
79072805 1296 littleend = little + SvCUR(littlestr);
378cc40b 1297 first = *little++;
c277df42 1298 /* The value of pos we can start at: */
79072805 1299 previous = BmPREVIOUS(littlestr);
463ee0b2 1300 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1301 /* The value of pos we can stop at: */
1302 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1303 if (previous + start_shift > stop_pos) {
1304 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1305 goto check_tail;
1306 return Nullch;
1307 }
c277df42 1308 while (pos < previous + start_shift) {
3280af22 1309 if (!(pos += PL_screamnext[pos]))
cf93c79d 1310 goto cant_find;
378cc40b 1311 }
de3bb511 1312#ifdef POINTERRIGOR
bbce6d69 1313 do {
ef64f398 1314 if (pos >= stop_pos) break;
bbce6d69 1315 if (big[pos-previous] != first)
1316 continue;
1317 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1318 if (*s++ != *x++) {
1319 s--;
1320 break;
de3bb511 1321 }
bbce6d69 1322 }
c277df42
IZ		 1323 if (s == littleend) {
1324 *old_posp = pos;
1325 if (!last) return (char *)(big+pos-previous);
1326 found = 1;
1327 }
6b88bc9c 1328 } while ( pos += PL_screamnext[pos] );
c277df42 1329 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1330#else /* !POINTERRIGOR */
1331 big -= previous;
bbce6d69 1332 do {
ef64f398 1333 if (pos >= stop_pos) break;
bbce6d69 1334 if (big[pos] != first)
1335 continue;
1336 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1337 if (*s++ != *x++) {
1338 s--;
1339 break;
378cc40b 1340 }
bbce6d69 1341 }
c277df42
IZ		 1342 if (s == littleend) {
1343 *old_posp = pos;
1344 if (!last) return (char *)(big+pos);
1345 found = 1;
1346 }
3280af22 1347 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1348 if (last && found)
1349 return (char *)(big+(*old_posp));
de3bb511 1350#endif /* POINTERRIGOR */
cf93c79d
IZ		 1351 check_tail:
1352 if (!SvTAIL(littlestr) || (end_shift > 0))
1353 return Nullch;
1354 /* Ignore the trailing "\n". This code is not microoptimized */
1355 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1356 stop_pos = littleend - little; /* Actual littlestr len */
1357 if (stop_pos == 0)
1358 return (char*)big;
1359 big -= stop_pos;
1360 if (*big == first
12ae5dfc
JH		 1361 && ((stop_pos == 1) ||
1362 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1363 return (char*)big;
1364 return Nullch;
8d063cd8
LW		 1365}
1366
79072805 1367I32
864dbfa3 1368Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1369{
bbce6d69 1370 register U8 *a = (U8 *)s1;
1371 register U8 *b = (U8 *)s2;
79072805 1372 while (len--) {
22c35a8c 1373 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1374 return 1;
1375 a++,b++;
1376 }
1377 return 0;
1378}
1379
1380I32
864dbfa3 1381Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1382{
1383 register U8 *a = (U8 *)s1;
1384 register U8 *b = (U8 *)s2;
1385 while (len--) {
22c35a8c 1386 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1387 return 1;
1388 a++,b++;
79072805
LW		 1389 }
1390 return 0;
1391}
1392
8d063cd8
LW		 1393/* copy a string to a safe spot */
1394
954c1994
GS		 1395/*
1396=for apidoc savepv
1397
1398Copy a string to a safe spot. This does not use an SV.
1399
1400=cut
1401*/
1402
8d063cd8 1403char *
864dbfa3 1404Perl_savepv(pTHX_ const char *sv)
8d063cd8 1405{
a687059c 1406 register char *newaddr;
8d063cd8 1407
79072805
LW		 1408 New(902,newaddr,strlen(sv)+1,char);
1409 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1410 return newaddr;
1411}
1412
a687059c
LW		 1413/* same thing but with a known length */
1414
954c1994
GS		 1415/*
1416=for apidoc savepvn
1417
1418Copy a string to a safe spot. The C<len> indicates number of bytes to
1419copy. This does not use an SV.
1420
1421=cut
1422*/
1423
a687059c 1424char *
864dbfa3 1425Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1426{
1427 register char *newaddr;
1428
1429 New(903,newaddr,len+1,char);
79072805 1430 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1431 newaddr[len] = '\0'; /* is now */
1432 return newaddr;
1433}
1434
cea2e8a9 1435/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1436
76e3520e 1437STATIC SV *
cea2e8a9 1438S_mess_alloc(pTHX)
fc36a67e 1439{
e72dc28c 1440 dTHR;
fc36a67e 1441 SV *sv;
1442 XPVMG *any;
1443
e72dc28c
GS		 1444 if (!PL_dirty)
1445 return sv_2mortal(newSVpvn("",0));
1446
0372dbb6
GS		 1447 if (PL_mess_sv)
1448 return PL_mess_sv;
1449
fc36a67e 1450 /* Create as PVMG now, to avoid any upgrading later */
1451 New(905, sv, 1, SV);
1452 Newz(905, any, 1, XPVMG);
1453 SvFLAGS(sv) = SVt_PVMG;
1454 SvANY(sv) = (void*)any;
1455 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1456 PL_mess_sv = sv;
fc36a67e 1457 return sv;
1458}
1459
c5be433b 1460#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1461char *
1462Perl_form_nocontext(const char* pat, ...)
1463{
1464 dTHX;
c5be433b 1465 char *retval;
cea2e8a9
GS		 1466 va_list args;
1467 va_start(args, pat);
c5be433b 1468 retval = vform(pat, &args);
cea2e8a9 1469 va_end(args);
c5be433b 1470 return retval;
cea2e8a9 1471}
c5be433b 1472#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1473
8990e307 1474char *
864dbfa3 1475Perl_form(pTHX_ const char* pat, ...)
8990e307 1476{
c5be433b 1477 char *retval;
46fc3d4c 1478 va_list args;
46fc3d4c 1479 va_start(args, pat);
c5be433b 1480 retval = vform(pat, &args);
46fc3d4c 1481 va_end(args);
c5be433b
GS		 1482 return retval;
1483}
1484
1485char *
1486Perl_vform(pTHX_ const char *pat, va_list *args)
1487{
1488 SV *sv = mess_alloc();
1489 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1490 return SvPVX(sv);
46fc3d4c 1491}
a687059c 1492
5a844595
GS		 1493#if defined(PERL_IMPLICIT_CONTEXT)
1494SV *
1495Perl_mess_nocontext(const char *pat, ...)
1496{
1497 dTHX;
1498 SV *retval;
1499 va_list args;
1500 va_start(args, pat);
1501 retval = vmess(pat, &args);
1502 va_end(args);
1503 return retval;
1504}
1505#endif /* PERL_IMPLICIT_CONTEXT */
1506
06bf62c7 1507SV *
5a844595
GS		 1508Perl_mess(pTHX_ const char *pat, ...)
1509{
1510 SV *retval;
1511 va_list args;
1512 va_start(args, pat);
1513 retval = vmess(pat, &args);
1514 va_end(args);
1515 return retval;
1516}
1517
1518SV *
1519Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1520{
e72dc28c 1521 SV *sv = mess_alloc();
46fc3d4c 1522 static char dgd[] = " during global destruction.\n";
1523
fc36a67e 1524 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1525 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1526 dTHR;
57843af0 1527 if (CopLINE(PL_curcop))
ed094faf
GS		 1528 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1529 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1530 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1531 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1532 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1533 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1534 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1535 line_mode ? "line" : "chunk",
1536 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1537 }
9efbc0eb 1538#ifdef USE_THREADS
e8e6f333
GS		 1539 if (thr->tid)
1540 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1541#endif
515f54a1 1542 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1543 }
06bf62c7 1544 return sv;
a687059c
LW		 1545}
1546
c5be433b
GS		 1547OP *
1548Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1549{
5dc0d613 1550 dTHR;
36477c24 1551 char *message;
3280af22 1552 int was_in_eval = PL_in_eval;
36477c24 1553 HV *stash;
1554 GV *gv;
1555 CV *cv;
06bf62c7
GS		 1556 SV *msv;
1557 STRLEN msglen;
36477c24 1558
bf49b057 1559 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1560 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1561 thr, PL_curstack, PL_mainstack));
36477c24 1562
06bf62c7 1563 if (pat) {
5a844595
GS		 1564 msv = vmess(pat, args);
1565 if (PL_errors && SvCUR(PL_errors)) {
1566 sv_catsv(PL_errors, msv);
1567 message = SvPV(PL_errors, msglen);
1568 SvCUR_set(PL_errors, 0);
1569 }
1570 else
1571 message = SvPV(msv,msglen);
06bf62c7
GS		 1572 }
1573 else {
1574 message = Nullch;
0f79a09d 1575 msglen = 0;
06bf62c7 1576 }
36477c24 1577
bf49b057 1578 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1579 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1580 thr, message, PL_diehook));
3280af22 1581 if (PL_diehook) {
cea2e8a9 1582 /* sv_2cv might call Perl_croak() */
3280af22 1583 SV *olddiehook = PL_diehook;
1738f5c4 1584 ENTER;
3280af22
NIS		 1585 SAVESPTR(PL_diehook);
1586 PL_diehook = Nullsv;
1738f5c4
CS		 1587 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1588 LEAVE;
1589 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1590 dSP;
774d564b 1591 SV *msg;
1592
1593 ENTER;
3a1f2dc9 1594 save_re_context();
79cb57f6 1595 if (message) {
06bf62c7 1596 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1597 SvREADONLY_on(msg);
1598 SAVEFREESV(msg);
1599 }
1600 else {
1601 msg = ERRSV;
1602 }
1738f5c4 1603
e788e7d3 1604 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1605 PUSHMARK(SP);
1738f5c4
CS		 1606 XPUSHs(msg);
1607 PUTBACK;
0cdb2077 1608 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1609 POPSTACK;
774d564b 1610 LEAVE;
1738f5c4 1611 }
36477c24 1612 }
1613
06bf62c7 1614 PL_restartop = die_where(message, msglen);
bf49b057 1615 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1616 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1617 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1618 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1619 JMPENV_JUMP(3);
3280af22 1620 return PL_restartop;
36477c24 1621}
1622
c5be433b 1623#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1624OP *
1625Perl_die_nocontext(const char* pat, ...)
a687059c 1626{
cea2e8a9
GS		 1627 dTHX;
1628 OP *o;
a687059c 1629 va_list args;
cea2e8a9 1630 va_start(args, pat);
c5be433b 1631 o = vdie(pat, &args);
cea2e8a9
GS		 1632 va_end(args);
1633 return o;
1634}
c5be433b 1635#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1636
1637OP *
1638Perl_die(pTHX_ const char* pat, ...)
1639{
1640 OP *o;
1641 va_list args;
1642 va_start(args, pat);
c5be433b 1643 o = vdie(pat, &args);
cea2e8a9
GS		 1644 va_end(args);
1645 return o;
1646}
1647
c5be433b
GS		 1648void
1649Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1650{
1651 dTHR;
de3bb511 1652 char *message;
748a9306
LW		 1653 HV *stash;
1654 GV *gv;
1655 CV *cv;
06bf62c7
GS		 1656 SV *msv;
1657 STRLEN msglen;
a687059c 1658
9983fa3c
GS		 1659 if (pat) {
1660 msv = vmess(pat, args);
1661 if (PL_errors && SvCUR(PL_errors)) {
1662 sv_catsv(PL_errors, msv);
1663 message = SvPV(PL_errors, msglen);
1664 SvCUR_set(PL_errors, 0);
1665 }
1666 else
1667 message = SvPV(msv,msglen);
1668 }
1669 else {
1670 message = Nullch;
1671 msglen = 0;
5a844595 1672 }
5a844595 1673
b900a521
JH		 1674 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1675 PTR2UV(thr), message));
5a844595 1676
3280af22 1677 if (PL_diehook) {
cea2e8a9 1678 /* sv_2cv might call Perl_croak() */
3280af22 1679 SV *olddiehook = PL_diehook;
1738f5c4 1680 ENTER;
3280af22
NIS		 1681 SAVESPTR(PL_diehook);
1682 PL_diehook = Nullsv;
20cec16a 1683 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1684 LEAVE;
1685 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1686 dSP;
774d564b 1687 SV *msg;
1688
1689 ENTER;
3a1f2dc9 1690 save_re_context();
9983fa3c
GS		 1691 if (message) {
1692 msg = newSVpvn(message, msglen);
1693 SvREADONLY_on(msg);
1694 SAVEFREESV(msg);
1695 }
1696 else {
1697 msg = ERRSV;
1698 }
20cec16a 1699
e788e7d3 1700 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1701 PUSHMARK(SP);
1738f5c4 1702 XPUSHs(msg);
20cec16a 1703 PUTBACK;
864dbfa3 1704 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1705 POPSTACK;
774d564b 1706 LEAVE;
20cec16a 1707 }
748a9306 1708 }
3280af22 1709 if (PL_in_eval) {
06bf62c7 1710 PL_restartop = die_where(message, msglen);
6224f72b 1711 JMPENV_JUMP(3);
a0d0e21e 1712 }
d175a3f0
GS		 1713 {
1714#ifdef USE_SFIO
1715 /* SFIO can really mess with your errno */
1716 int e = errno;
1717#endif
bf49b057
GS		 1718 PerlIO *serr = Perl_error_log;
1719
1720 PerlIO_write(serr, message, msglen);
1721 (void)PerlIO_flush(serr);
d175a3f0
GS		 1722#ifdef USE_SFIO
1723 errno = e;
1724#endif
1725 }
f86702cc 1726 my_failure_exit();
a687059c
LW		 1727}
1728
c5be433b 1729#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1730void
cea2e8a9 1731Perl_croak_nocontext(const char *pat, ...)
a687059c 1732{
cea2e8a9 1733 dTHX;
a687059c 1734 va_list args;
cea2e8a9 1735 va_start(args, pat);
c5be433b 1736 vcroak(pat, &args);
cea2e8a9
GS		 1737 /* NOTREACHED */
1738 va_end(args);
1739}
1740#endif /* PERL_IMPLICIT_CONTEXT */
1741
954c1994
GS		 1742/*
1743=for apidoc croak
1744
9983fa3c
GS		 1745This is the XSUB-writer's interface to Perl's C<die> function.
1746Normally use this function the same way you use the C C<printf>
1747function. See C<warn>.
1748
1749If you want to throw an exception object, assign the object to
1750C<$@> and then pass C<Nullch> to croak():
1751
1752 errsv = get_sv("@", TRUE);
1753 sv_setsv(errsv, exception_object);
1754 croak(Nullch);
954c1994
GS		 1755
1756=cut
1757*/
1758
cea2e8a9
GS		 1759void
1760Perl_croak(pTHX_ const char *pat, ...)
1761{
1762 va_list args;
1763 va_start(args, pat);
c5be433b 1764 vcroak(pat, &args);
cea2e8a9
GS		 1765 /* NOTREACHED */
1766 va_end(args);
1767}
1768
c5be433b
GS		 1769void
1770Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1771{
de3bb511 1772 char *message;
748a9306
LW		 1773 HV *stash;
1774 GV *gv;
1775 CV *cv;
06bf62c7
GS		 1776 SV *msv;
1777 STRLEN msglen;
a687059c 1778
5a844595 1779 msv = vmess(pat, args);
06bf62c7 1780 message = SvPV(msv, msglen);
a687059c 1781
3280af22 1782 if (PL_warnhook) {
cea2e8a9 1783 /* sv_2cv might call Perl_warn() */
11343788 1784 dTHR;
3280af22 1785 SV *oldwarnhook = PL_warnhook;
1738f5c4 1786 ENTER;
3280af22
NIS		 1787 SAVESPTR(PL_warnhook);
1788 PL_warnhook = Nullsv;
20cec16a 1789 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1790 LEAVE;
1791 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1792 dSP;
774d564b 1793 SV *msg;
1794
1795 ENTER;
3a1f2dc9 1796 save_re_context();
06bf62c7 1797 msg = newSVpvn(message, msglen);
774d564b 1798 SvREADONLY_on(msg);
1799 SAVEFREESV(msg);
1800
e788e7d3 1801 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1802 PUSHMARK(SP);
774d564b 1803 XPUSHs(msg);
20cec16a 1804 PUTBACK;
864dbfa3 1805 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1806 POPSTACK;
774d564b 1807 LEAVE;
20cec16a 1808 return;
1809 }
748a9306 1810 }
bf49b057
GS		 1811 {
1812 PerlIO *serr = Perl_error_log;
1813
1814 PerlIO_write(serr, message, msglen);
a687059c 1815#ifdef LEAKTEST
bf49b057
GS		 1816 DEBUG_L(*message == '!'
1817 ? (xstat(message[1]=='!'
1818 ? (message[2]=='!' ? 2 : 1)
1819 : 0)
1820 , 0)
1821 : 0);
a687059c 1822#endif
bf49b057
GS		 1823 (void)PerlIO_flush(serr);
1824 }
a687059c 1825}
8d063cd8 1826
c5be433b 1827#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1828void
1829Perl_warn_nocontext(const char *pat, ...)
1830{
1831 dTHX;
1832 va_list args;
1833 va_start(args, pat);
c5be433b 1834 vwarn(pat, &args);
cea2e8a9
GS		 1835 va_end(args);
1836}
1837#endif /* PERL_IMPLICIT_CONTEXT */
1838
954c1994
GS		 1839/*
1840=for apidoc warn
1841
1842This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1843function the same way you use the C C<printf> function. See
1844C<croak>.
1845
1846=cut
1847*/
1848
cea2e8a9
GS		 1849void
1850Perl_warn(pTHX_ const char *pat, ...)
1851{
1852 va_list args;
1853 va_start(args, pat);
c5be433b 1854 vwarn(pat, &args);
cea2e8a9
GS		 1855 va_end(args);
1856}
1857
c5be433b
GS		 1858#if defined(PERL_IMPLICIT_CONTEXT)
1859void
1860Perl_warner_nocontext(U32 err, const char *pat, ...)
1861{
1862 dTHX;
1863 va_list args;
1864 va_start(args, pat);
1865 vwarner(err, pat, &args);
1866 va_end(args);
1867}
1868#endif /* PERL_IMPLICIT_CONTEXT */
1869
599cee73 1870void
864dbfa3 1871Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1872{
1873 va_list args;
c5be433b
GS		 1874 va_start(args, pat);
1875 vwarner(err, pat, &args);
1876 va_end(args);
1877}
1878
1879void
1880Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1881{
1882 dTHR;
599cee73
PM		 1883 char *message;
1884 HV *stash;
1885 GV *gv;
1886 CV *cv;
06bf62c7
GS		 1887 SV *msv;
1888 STRLEN msglen;
599cee73 1889
5a844595 1890 msv = vmess(pat, args);
06bf62c7 1891 message = SvPV(msv, msglen);
599cee73
PM		 1892
1893 if (ckDEAD(err)) {
1894#ifdef USE_THREADS
b900a521 1895 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1896#endif /* USE_THREADS */
1897 if (PL_diehook) {
cea2e8a9 1898 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1899 SV *olddiehook = PL_diehook;
1900 ENTER;
1901 SAVESPTR(PL_diehook);
1902 PL_diehook = Nullsv;
1903 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1904 LEAVE;
1905 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1906 dSP;
1907 SV *msg;
1908
1909 ENTER;
3a1f2dc9 1910 save_re_context();
06bf62c7 1911 msg = newSVpvn(message, msglen);
599cee73
PM		 1912 SvREADONLY_on(msg);
1913 SAVEFREESV(msg);
1914
3a1f2dc9 1915 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1916 PUSHMARK(sp);
1917 XPUSHs(msg);
1918 PUTBACK;
864dbfa3 1919 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1920 POPSTACK;
599cee73
PM		 1921 LEAVE;
1922 }
1923 }
1924 if (PL_in_eval) {
06bf62c7 1925 PL_restartop = die_where(message, msglen);
599cee73
PM		 1926 JMPENV_JUMP(3);
1927 }
bf49b057
GS		 1928 {
1929 PerlIO *serr = Perl_error_log;
1930 PerlIO_write(serr, message, msglen);
1931 (void)PerlIO_flush(serr);
1932 }
599cee73
PM		 1933 my_failure_exit();
1934
1935 }
1936 else {
1937 if (PL_warnhook) {
cea2e8a9 1938 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1939 dTHR;
1940 SV *oldwarnhook = PL_warnhook;
1941 ENTER;
1942 SAVESPTR(PL_warnhook);
1943 PL_warnhook = Nullsv;
1944 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1945 LEAVE;
599cee73
PM		 1946 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1947 dSP;
1948 SV *msg;
1949
1950 ENTER;
3a1f2dc9 1951 save_re_context();
06bf62c7 1952 msg = newSVpvn(message, msglen);
599cee73
PM		 1953 SvREADONLY_on(msg);
1954 SAVEFREESV(msg);
1955
3a1f2dc9 1956 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1957 PUSHMARK(sp);
1958 XPUSHs(msg);
1959 PUTBACK;
864dbfa3 1960 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1961 POPSTACK;
599cee73
PM		 1962 LEAVE;
1963 return;
1964 }
1965 }
bf49b057
GS		 1966 {
1967 PerlIO *serr = Perl_error_log;
1968 PerlIO_write(serr, message, msglen);
599cee73 1969#ifdef LEAKTEST
06247ec9
JH		 1970 DEBUG_L(*message == '!'
1971 ? (xstat(message[1]=='!'
1972 ? (message[2]=='!' ? 2 : 1)
1973 : 0)
1974 , 0)
1975 : 0);
599cee73 1976#endif
bf49b057
GS		 1977 (void)PerlIO_flush(serr);
1978 }
599cee73
PM		 1979 }
1980}
1981
13b6e58c
JH		 1982#ifdef USE_ENVIRON_ARRAY
1983 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
47dafe4d 1984#if !defined(WIN32)
8d063cd8 1985void
864dbfa3 1986Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1987{
f2517201
GS		 1988#ifndef PERL_USE_SAFE_PUTENV
1989 /* most putenv()s leak, so we manipulate environ directly */
79072805 1990 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1991
3280af22 1992 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1993 I32 j;
1994 I32 max;
fe14fcc3
LW		 1995 char **tmpenv;
1996
de3bb511 1997 /*SUPPRESS 530*/
fe14fcc3 1998 for (max = i; environ[max]; max++) ;
f2517201
GS		 1999 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
2000 for (j=0; j<max; j++) { /* copy environment */
2001 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
2002 strcpy(tmpenv[j], environ[j]);
2003 }
fe14fcc3
LW		 2004 tmpenv[max] = Nullch;
2005 environ = tmpenv; /* tell exec where it is now */
2006 }
a687059c 2007 if (!val) {
f2517201 2008 safesysfree(environ[i]);
a687059c
LW		 2009 while (environ[i]) {
2010 environ[i] = environ[i+1];
2011 i++;
2012 }
2013 return;
2014 }
8d063cd8 2015 if (!environ[i]) { /* does not exist yet */
f2517201 2016 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 2017 environ[i+1] = Nullch; /* make sure it's null terminated */
2018 }
fe14fcc3 2019 else
f2517201
GS		 2020 safesysfree(environ[i]);
2021 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
2022
a687059c 2023 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 2024
2025#else /* PERL_USE_SAFE_PUTENV */
47dafe4d
EF		 2026# if defined(__CYGWIN__)
2027 setenv(nam, val, 1);
2028# else
f2517201
GS		 2029 char *new_env;
2030
2031 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 2032 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201 2033 (void)putenv(new_env);
47dafe4d 2034# endif /* __CYGWIN__ */
f2517201 2035#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 2036}
2037
47dafe4d 2038#else /* WIN32 */
68dc0745 2039
2040void
864dbfa3 2041Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2042{
3e3baf6d
TB		 2043
2044#ifdef USE_WIN32_RTL_ENV
2045
68dc0745 2046 register char *envstr;
2047 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 2048 STRLEN vallen;
2049 char *oldstr = environ[setenv_getix(nam)];
2050
2051 /* putenv() has totally broken semantics in both the Borland
2052 * and Microsoft CRTLs. They either store the passed pointer in
2053 * the environment without making a copy, or make a copy and don't
2054 * free it. And on top of that, they dont free() old entries that
2055 * are being replaced/deleted. This means the caller must
2056 * free any old entries somehow, or we end up with a memory
2057 * leak every time my_setenv() is called. One might think
2058 * one could directly manipulate environ[], like the UNIX code
2059 * above, but direct changes to environ are not allowed when
2060 * calling putenv(), since the RTLs maintain an internal
2061 * *copy* of environ[]. Bad, bad, *bad* stink.
2062 * GSAR 97-06-07
2063 */
68dc0745 2064
3e3baf6d
TB		 2065 if (!val) {
2066 if (!oldstr)
2067 return;
2068 val = "";
2069 vallen = 0;
2070 }
2071 else
2072 vallen = strlen(val);
f2517201 2073 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2074 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2075 (void)PerlEnv_putenv(envstr);
3e3baf6d 2076 if (oldstr)
f2517201 2077 safesysfree(oldstr);
3e3baf6d 2078#ifdef _MSC_VER
f2517201 2079 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2080#endif
2081
2082#else /* !USE_WIN32_RTL_ENV */
2083
ac5c734f
GS		 2084 register char *envstr;
2085 STRLEN len = strlen(nam) + 3;
2086 if (!val) {
2087 val = "";
2088 }
2089 len += strlen(val);
2090 New(904, envstr, len, char);
2091 (void)sprintf(envstr,"%s=%s",nam,val);
2092 (void)PerlEnv_putenv(envstr);
2093 Safefree(envstr);
3e3baf6d
TB		 2094
2095#endif
2096}
2097
2098#endif /* WIN32 */
2099
2100I32
864dbfa3 2101Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2102{
2103 register I32 i, len = strlen(nam);
2104
2105 for (i = 0; environ[i]; i++) {
2106 if (
2107#ifdef WIN32
2108 strnicmp(environ[i],nam,len) == 0
2109#else
2110 strnEQ(environ[i],nam,len)
2111#endif
2112 && environ[i][len] == '=')
2113 break; /* strnEQ must come first to avoid */
2114 } /* potential SEGV's */
2115 return i;
68dc0745 2116}
2117
ed79a026 2118#endif /* !VMS && !EPOC*/
378cc40b 2119
16d20bd9 2120#ifdef UNLINK_ALL_VERSIONS
79072805 2121I32
864dbfa3 2122Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2123{
79072805 2124 I32 i;
378cc40b 2125
6ad3d225 2126 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2127 return i ? 0 : -1;
2128}
2129#endif
2130
7a3f2258 2131/* this is a drop-in replacement for bcopy() */
85e6fe83 2132#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2133char *
7a3f2258 2134Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2135{
2136 char *retval = to;
2137
7c0587c8
LW		 2138 if (from - to >= 0) {
2139 while (len--)
2140 *to++ = *from++;
2141 }
2142 else {
2143 to += len;
2144 from += len;
2145 while (len--)
faf8582f 2146 *(--to) = *(--from);
7c0587c8 2147 }
378cc40b
LW		 2148 return retval;
2149}
ffed7fef 2150#endif
378cc40b 2151
7a3f2258 2152/* this is a drop-in replacement for memset() */
fc36a67e 2153#ifndef HAS_MEMSET
2154void *
7a3f2258 2155Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2156{
2157 char *retval = loc;
2158
2159 while (len--)
2160 *loc++ = ch;
2161 return retval;
2162}
2163#endif
2164
7a3f2258 2165/* this is a drop-in replacement for bzero() */
7c0587c8 2166#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2167char *
7a3f2258 2168Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2169{
2170 char *retval = loc;
2171
2172 while (len--)
2173 *loc++ = 0;
2174 return retval;
2175}
2176#endif
7c0587c8 2177
7a3f2258 2178/* this is a drop-in replacement for memcmp() */
36477c24 2179#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2180I32
7a3f2258 2181Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2182{
36477c24 2183 register U8 *a = (U8 *)s1;
2184 register U8 *b = (U8 *)s2;
79072805 2185 register I32 tmp;
7c0587c8
LW		 2186
2187 while (len--) {
36477c24 2188 if (tmp = *a++ - *b++)
7c0587c8
LW		 2189 return tmp;
2190 }
2191 return 0;
2192}
36477c24 2193#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2194
fe14fcc3 2195#ifndef HAS_VPRINTF
a687059c 2196
85e6fe83 2197#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2198char *
2199#else
2200int
2201#endif
08105a92 2202vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2203{
2204 FILE fakebuf;
2205
2206 fakebuf._ptr = dest;
2207 fakebuf._cnt = 32767;
35c8bce7
LW		 2208#ifndef _IOSTRG
2209#define _IOSTRG 0
2210#endif
a687059c
LW		 2211 fakebuf._flag = _IOWRT|_IOSTRG;
2212 _doprnt(pat, args, &fakebuf); /* what a kludge */
2213 (void)putc('\0', &fakebuf);
85e6fe83 2214#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2215 return(dest);
2216#else
2217 return 0; /* perl doesn't use return value */
2218#endif
2219}
2220
fe14fcc3 2221#endif /* HAS_VPRINTF */
a687059c
LW		 2222
2223#ifdef MYSWAP
ffed7fef 2224#if BYTEORDER != 0x4321
a687059c 2225short
864dbfa3 2226Perl_my_swap(pTHX_ short s)
a687059c
LW		 2227{
2228#if (BYTEORDER & 1) == 0
2229 short result;
2230
2231 result = ((s & 255) << 8) + ((s >> 8) & 255);
2232 return result;
2233#else
2234 return s;
2235#endif
2236}
2237
2238long
864dbfa3 2239Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2240{
2241 union {
2242 long result;
ffed7fef 2243 char c[sizeof(long)];
a687059c
LW		 2244 } u;
2245
ffed7fef 2246#if BYTEORDER == 0x1234
a687059c
LW		 2247 u.c[0] = (l >> 24) & 255;
2248 u.c[1] = (l >> 16) & 255;
2249 u.c[2] = (l >> 8) & 255;
2250 u.c[3] = l & 255;
2251 return u.result;
2252#else
ffed7fef 2253#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2254 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2255#else
79072805
LW		 2256 register I32 o;
2257 register I32 s;
a687059c 2258
ffed7fef
LW		 2259 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2260 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2261 }
2262 return u.result;
2263#endif
2264#endif
2265}
2266
2267long
864dbfa3 2268Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2269{
2270 union {
2271 long l;
ffed7fef 2272 char c[sizeof(long)];
a687059c
LW		 2273 } u;
2274
ffed7fef 2275#if BYTEORDER == 0x1234
a687059c
LW		 2276 u.c[0] = (l >> 24) & 255;
2277 u.c[1] = (l >> 16) & 255;
2278 u.c[2] = (l >> 8) & 255;
2279 u.c[3] = l & 255;
2280 return u.l;
2281#else
ffed7fef 2282#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2283 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2284#else
79072805
LW		 2285 register I32 o;
2286 register I32 s;
a687059c
LW		 2287
2288 u.l = l;
2289 l = 0;
ffed7fef
LW		 2290 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2291 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2292 }
2293 return l;
2294#endif
2295#endif
2296}
2297
ffed7fef 2298#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2299#endif /* MYSWAP */
2300
2301/*
2302 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2303 * If these functions are defined,
2304 * the BYTEORDER is neither 0x1234 nor 0x4321.
2305 * However, this is not assumed.
2306 * -DWS
2307 */
2308
2309#define HTOV(name,type) \
2310 type \
ba106d47 2311 name (register type n) \
988174c1
LW		 2312 { \
2313 union { \
2314 type value; \
2315 char c[sizeof(type)]; \
2316 } u; \
79072805
LW		 2317 register I32 i; \
2318 register I32 s; \
988174c1
LW		 2319 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2320 u.c[i] = (n >> s) & 0xFF; \
2321 } \
2322 return u.value; \
2323 }
2324
2325#define VTOH(name,type) \
2326 type \
ba106d47 2327 name (register type n) \
988174c1
LW		 2328 { \
2329 union { \
2330 type value; \
2331 char c[sizeof(type)]; \
2332 } u; \
79072805
LW		 2333 register I32 i; \
2334 register I32 s; \
988174c1
LW		 2335 u.value = n; \
2336 n = 0; \
2337 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2338 n += (u.c[i] & 0xFF) << s; \
2339 } \
2340 return n; \
2341 }
2342
2343#if defined(HAS_HTOVS) && !defined(htovs)
2344HTOV(htovs,short)
2345#endif
2346#if defined(HAS_HTOVL) && !defined(htovl)
2347HTOV(htovl,long)
2348#endif
2349#if defined(HAS_VTOHS) && !defined(vtohs)
2350VTOH(vtohs,short)
2351#endif
2352#if defined(HAS_VTOHL) && !defined(vtohl)
2353VTOH(vtohl,long)
2354#endif
a687059c 2355
5f05dabc 2356 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2357#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2358PerlIO *
864dbfa3 2359Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2360{
2361 int p[2];
8ac85365 2362 register I32 This, that;
d8a83dd3 2363 register Pid_t pid;
79072805 2364 SV *sv;
1738f5c4 2365 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2366 I32 did_pipes = 0;
2367 int pp[2];
a687059c 2368
45bc9206 2369 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2370#ifdef OS2
2371 if (doexec) {
23da6c43 2372 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2373 }
2374#endif
8ac85365
NIS		 2375 This = (*mode == 'w');
2376 that = !This;
3280af22 2377 if (doexec && PL_tainting) {
bbce6d69 2378 taint_env();
2379 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2380 }
c2267164
IZ		 2381 if (PerlProc_pipe(p) < 0)
2382 return Nullfp;
e446cec8
IZ		 2383 if (doexec && PerlProc_pipe(pp) >= 0)
2384 did_pipes = 1;
a687059c
LW		 2385 while ((pid = (doexec?vfork():fork())) < 0) {
2386 if (errno != EAGAIN) {
6ad3d225 2387 PerlLIO_close(p[This]);
e446cec8
IZ		 2388 if (did_pipes) {
2389 PerlLIO_close(pp[0]);
2390 PerlLIO_close(pp[1]);
2391 }
a687059c 2392 if (!doexec)
cea2e8a9 2393 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2394 return Nullfp;
2395 }
2396 sleep(5);
2397 }
2398 if (pid == 0) {
79072805
LW		 2399 GV* tmpgv;
2400
30ac6d9b
GS		 2401#undef THIS
2402#undef THAT
a687059c 2403#define THIS that
8ac85365 2404#define THAT This
6ad3d225 2405 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2406 if (did_pipes) {
2407 PerlLIO_close(pp[0]);
2408#if defined(HAS_FCNTL) && defined(F_SETFD)
2409 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2410#endif
2411 }
a687059c 2412 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2413 PerlLIO_dup2(p[THIS], *mode == 'r');
2414 PerlLIO_close(p[THIS]);
a687059c 2415 }
4435c477 2416#ifndef OS2
a687059c 2417 if (doexec) {
a0d0e21e 2418#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2419 int fd;
2420
2421#ifndef NOFILE
2422#define NOFILE 20
2423#endif
6b88bc9c 2424 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2425 if (fd != pp[1])
2426 PerlLIO_close(fd);
ae986130 2427#endif
e446cec8 2428 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2429 PerlProc__exit(1);
a687059c 2430 }
4435c477 2431#endif /* defined OS2 */
de3bb511 2432 /*SUPPRESS 560*/
155aba94 2433 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2434 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2435 PL_forkprocess = 0;
2436 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2437 return Nullfp;
2438#undef THIS
2439#undef THAT
2440 }
62b28dd9 2441 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2442 PerlLIO_close(p[that]);
e446cec8
IZ		 2443 if (did_pipes)
2444 PerlLIO_close(pp[1]);
8ac85365 2445 if (p[that] < p[This]) {
6ad3d225
GS		 2446 PerlLIO_dup2(p[This], p[that]);
2447 PerlLIO_close(p[This]);
8ac85365 2448 p[This] = p[that];
62b28dd9 2449 }
4755096e 2450 LOCK_FDPID_MUTEX;
3280af22 2451 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2452 UNLOCK_FDPID_MUTEX;
a0d0e21e 2453 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2454 SvIVX(sv) = pid;
3280af22 2455 PL_forkprocess = pid;
e446cec8
IZ		 2456 if (did_pipes && pid > 0) {
2457 int errkid;
2458 int n = 0, n1;
2459
2460 while (n < sizeof(int)) {
2461 n1 = PerlLIO_read(pp[0],
2462 (void*)(((char*)&errkid)+n),
2463 (sizeof(int)) - n);
2464 if (n1 <= 0)
2465 break;
2466 n += n1;
2467 }
2f96c702
IZ		 2468 PerlLIO_close(pp[0]);
2469 did_pipes = 0;
e446cec8
IZ		 2470 if (n) { /* Error */
2471 if (n != sizeof(int))
cea2e8a9 2472 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2473 errno = errkid; /* Propagate errno from kid */
2474 return Nullfp;
2475 }
2476 }
2477 if (did_pipes)
2478 PerlLIO_close(pp[0]);
8ac85365 2479 return PerlIO_fdopen(p[This], mode);
a687059c 2480}
7c0587c8 2481#else
55497cff 2482#if defined(atarist) || defined(DJGPP)
7c0587c8 2483FILE *popen();
760ac839 2484PerlIO *
864dbfa3 2485Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2486{
760ac839 2487 /* Needs work for PerlIO ! */
55497cff 2488 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2489 PERL_FLUSHALL_FOR_CHILD;
55497cff 2490 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2491}
2492#endif
2493
2494#endif /* !DOSISH */
a687059c 2495
748a9306 2496#ifdef DUMP_FDS
35ff7856 2497void
864dbfa3 2498Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2499{
2500 int fd;
2501 struct stat tmpstatbuf;
2502
bf49b057 2503 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2504 for (fd = 0; fd < 32; fd++) {
6ad3d225 2505 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2506 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2507 }
bf49b057 2508 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2509}
35ff7856 2510#endif /* DUMP_FDS */
ae986130 2511
fe14fcc3 2512#ifndef HAS_DUP2
fec02dd3 2513int
ba106d47 2514dup2(int oldfd, int newfd)
a687059c 2515{
a0d0e21e 2516#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2517 if (oldfd == newfd)
2518 return oldfd;
6ad3d225 2519 PerlLIO_close(newfd);
fec02dd3 2520 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2521#else
fc36a67e 2522#define DUP2_MAX_FDS 256
2523 int fdtmp[DUP2_MAX_FDS];
79072805 2524 I32 fdx = 0;
ae986130
LW		 2525 int fd;
2526
fe14fcc3 2527 if (oldfd == newfd)
fec02dd3 2528 return oldfd;
6ad3d225 2529 PerlLIO_close(newfd);
fc36a67e 2530 /* good enough for low fd's... */
6ad3d225 2531 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2532 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2533 PerlLIO_close(fd);
fc36a67e 2534 fd = -1;
2535 break;
2536 }
ae986130 2537 fdtmp[fdx++] = fd;
fc36a67e 2538 }
ae986130 2539 while (fdx > 0)
6ad3d225 2540 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2541 return fd;
62b28dd9 2542#endif
a687059c
LW		 2543}
2544#endif
2545
64ca3a65 2546#ifndef PERL_MICRO
ff68c719 2547#ifdef HAS_SIGACTION
2548
2549Sighandler_t
864dbfa3 2550Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2551{
2552 struct sigaction act, oact;
2553
2554 act.sa_handler = handler;
2555 sigemptyset(&act.sa_mask);
2556 act.sa_flags = 0;
2557#ifdef SA_RESTART
2558 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2559#endif
85264bed
CS		 2560#ifdef SA_NOCLDWAIT
2561 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2562 act.sa_flags |= SA_NOCLDWAIT;
2563#endif
ff68c719 2564 if (sigaction(signo, &act, &oact) == -1)
36477c24 2565 return SIG_ERR;
ff68c719 2566 else
36477c24 2567 return oact.sa_handler;
ff68c719 2568}
2569
2570Sighandler_t
864dbfa3 2571Perl_rsignal_state(pTHX_ int signo)
ff68c719 2572{
2573 struct sigaction oact;
2574
2575 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2576 return SIG_ERR;
2577 else
2578 return oact.sa_handler;
2579}
2580
2581int
864dbfa3 2582Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2583{
2584 struct sigaction act;
2585
2586 act.sa_handler = handler;
2587 sigemptyset(&act.sa_mask);
2588 act.sa_flags = 0;
2589#ifdef SA_RESTART
2590 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2591#endif
85264bed
CS		 2592#ifdef SA_NOCLDWAIT
2593 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2594 act.sa_flags |= SA_NOCLDWAIT;
2595#endif
ff68c719 2596 return sigaction(signo, &act, save);
2597}
2598
2599int
864dbfa3 2600Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2601{
2602 return sigaction(signo, save, (struct sigaction *)NULL);
2603}
2604
2605#else /* !HAS_SIGACTION */
2606
2607Sighandler_t
864dbfa3 2608Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2609{
6ad3d225 2610 return PerlProc_signal(signo, handler);
ff68c719 2611}
2612
2613static int sig_trapped;
2614
2615static
2616Signal_t
4e35701f 2617sig_trap(int signo)
ff68c719 2618{
2619 sig_trapped++;
2620}
2621
2622Sighandler_t
864dbfa3 2623Perl_rsignal_state(pTHX_ int signo)
ff68c719 2624{
2625 Sighandler_t oldsig;
2626
2627 sig_trapped = 0;
6ad3d225
GS		 2628 oldsig = PerlProc_signal(signo, sig_trap);
2629 PerlProc_signal(signo, oldsig);
ff68c719 2630 if (sig_trapped)
7766f137 2631 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2632 return oldsig;
2633}
2634
2635int
864dbfa3 2636Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2637{
6ad3d225 2638 *save = PerlProc_signal(signo, handler);
ff68c719 2639 return (*save == SIG_ERR) ? -1 : 0;
2640}
2641
2642int
864dbfa3 2643Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2644{
6ad3d225 2645 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2646}
2647
2648#endif /* !HAS_SIGACTION */
64ca3a65 2649#endif /* !PERL_MICRO */
ff68c719 2650
5f05dabc 2651 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2652#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2653I32
864dbfa3 2654Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2655{
ff68c719 2656 Sigsave_t hstat, istat, qstat;
a687059c 2657 int status;
a0d0e21e 2658 SV **svp;
d8a83dd3
JH		 2659 Pid_t pid;
2660 Pid_t pid2;
03136e13
CS		 2661 bool close_failed;
2662 int saved_errno;
2663#ifdef VMS
2664 int saved_vaxc_errno;
2665#endif
22fae026
TM		 2666#ifdef WIN32
2667 int saved_win32_errno;
2668#endif
a687059c 2669
4755096e 2670 LOCK_FDPID_MUTEX;
3280af22 2671 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2672 UNLOCK_FDPID_MUTEX;
d8a83dd3 2673 pid = SvIVX(*svp);
a0d0e21e 2674 SvREFCNT_dec(*svp);
3280af22 2675 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2676#ifdef OS2
2677 if (pid == -1) { /* Opened by popen. */
2678 return my_syspclose(ptr);
2679 }
2680#endif
03136e13
CS		 2681 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2682 saved_errno = errno;
2683#ifdef VMS
2684 saved_vaxc_errno = vaxc$errno;
2685#endif
22fae026
TM		 2686#ifdef WIN32
2687 saved_win32_errno = GetLastError();
2688#endif
03136e13 2689 }
7c0587c8 2690#ifdef UTS
6ad3d225 2691 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2692#endif
64ca3a65 2693#ifndef PERL_MICRO
ff68c719 2694 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2695 rsignal_save(SIGINT, SIG_IGN, &istat);
2696 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2697#endif
748a9306 2698 do {
1d3434b8
GS		 2699 pid2 = wait4pid(pid, &status, 0);
2700 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2701#ifndef PERL_MICRO
ff68c719 2702 rsignal_restore(SIGHUP, &hstat);
2703 rsignal_restore(SIGINT, &istat);
2704 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2705#endif
03136e13
CS		 2706 if (close_failed) {
2707 SETERRNO(saved_errno, saved_vaxc_errno);
2708 return -1;
2709 }
1d3434b8 2710 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2711}
4633a7c4
LW		 2712#endif /* !DOSISH */
2713
cd39f2b6 2714#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2715I32
d8a83dd3 2716Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2717{
79072805
LW		 2718 SV *sv;
2719 SV** svp;
fc36a67e 2720 char spid[TYPE_CHARS(int)];
20188a90
LW		 2721
2722 if (!pid)
2723 return -1;
68a29c53 2724#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2725 if (pid > 0) {
7b0972df 2726 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2727 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2728 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2729 *statusp = SvIVX(*svp);
3280af22 2730 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2731 return pid;
2732 }
2733 }
2734 else {
79072805 2735 HE *entry;
20188a90 2736
3280af22 2737 hv_iterinit(PL_pidstatus);
155aba94 2738 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2739 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2740 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2741 *statusp = SvIVX(sv);
7b0972df 2742 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2743 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2744 return pid;
2745 }
2746 }
68a29c53 2747#endif
79072805 2748#ifdef HAS_WAITPID
367f3c24
IZ		 2749# ifdef HAS_WAITPID_RUNTIME
2750 if (!HAS_WAITPID_RUNTIME)
2751 goto hard_way;
2752# endif
f55ee38a 2753 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2754#endif
2755#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2756 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2757#endif
2758#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2759 hard_way:
a0d0e21e
LW		 2760 {
2761 I32 result;
2762 if (flags)
cea2e8a9 2763 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2764 else {
76e3520e 2765 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2766 pidgone(result,*statusp);
2767 if (result < 0)
2768 *statusp = -1;
2769 }
2770 return result;
a687059c
LW		 2771 }
2772#endif
a687059c 2773}
2d7a9237 2774#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2775
7c0587c8 2776void
de3bb511 2777/*SUPPRESS 590*/
d8a83dd3 2778Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2779{
79072805 2780 register SV *sv;
fc36a67e 2781 char spid[TYPE_CHARS(int)];
a687059c 2782
7b0972df 2783 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2784 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2785 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2786 SvIVX(sv) = status;
20188a90 2787 return;
a687059c
LW		 2788}
2789
55497cff 2790#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2791int pclose();
ddcf38b7
IZ		 2792#ifdef HAS_FORK
2793int /* Cannot prototype with I32
2794 in os2ish.h. */
ba106d47 2795my_syspclose(PerlIO *ptr)
ddcf38b7 2796#else
79072805 2797I32
864dbfa3 2798Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2799#endif
a687059c 2800{
760ac839
LW		 2801 /* Needs work for PerlIO ! */
2802 FILE *f = PerlIO_findFILE(ptr);
2803 I32 result = pclose(f);
933fea7f
GS		 2804#if defined(DJGPP)
2805 result = (result << 8) & 0xff00;
2806#endif
760ac839
LW		 2807 PerlIO_releaseFILE(ptr,f);
2808 return result;
a687059c 2809}
7c0587c8 2810#endif
9f68db38
LW		 2811
2812void
864dbfa3 2813Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2814{
79072805 2815 register I32 todo;
08105a92 2816 register const char *frombase = from;
9f68db38
LW		 2817
2818 if (len == 1) {
08105a92 2819 register const char c = *from;
9f68db38 2820 while (count-- > 0)
5926133d 2821 *to++ = c;
9f68db38
LW		 2822 return;
2823 }
2824 while (count-- > 0) {
2825 for (todo = len; todo > 0; todo--) {
2826 *to++ = *from++;
2827 }
2828 from = frombase;
2829 }
2830}
0f85fab0 2831
463ee0b2 2832U32
65202027 2833Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2834{
2835 long along;
2836
27e2fb84 2837#if CASTFLAGS & 2
34de22dd
LW		 2838# define BIGDOUBLE 2147483648.0
2839 if (f >= BIGDOUBLE)
2840 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2841#endif
0f85fab0
LW		 2842 if (f >= 0.0)
2843 return (unsigned long)f;
2844 along = (long)f;
2845 return (unsigned long)along;
2846}
ed6116ce 2847# undef BIGDOUBLE
5d94fbed 2848
5d94fbed
AD		 2849/* Unfortunately, on some systems the cast_uv() function doesn't
2850 work with the system-supplied definition of ULONG_MAX. The
2851 comparison (f >= ULONG_MAX) always comes out true. It must be a
2852 problem with the compiler constant folding.
2853
2854 In any case, this workaround should be fine on any two's complement
2855 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2856 ccflags.
2857 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2858*/
1eb770ff 2859
2860/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2861 of LONG_(MIN/MAX).
2862 -- Kenneth Albanowski <kjahds@kjahds.com>
2863*/
2864
20cec16a 2865#ifndef MY_UV_MAX
2866# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2867#endif
2868
ed6116ce 2869I32
65202027 2870Perl_cast_i32(pTHX_ NV f)
ed6116ce 2871{
20cec16a 2872 if (f >= I32_MAX)
2873 return (I32) I32_MAX;
2874 if (f <= I32_MIN)
2875 return (I32) I32_MIN;
ed6116ce
LW		 2876 return (I32) f;
2877}
a0d0e21e
LW		 2878
2879IV
65202027 2880Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2881{
25da4f38
IZ		 2882 if (f >= IV_MAX) {
2883 UV uv;
2884
65202027 2885 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2886 return (IV) UV_MAX;
2887 uv = (UV) f;
2888 return (IV)uv;
2889 }
20cec16a 2890 if (f <= IV_MIN)
2891 return (IV) IV_MIN;
a0d0e21e
LW		 2892 return (IV) f;
2893}
5d94fbed
AD		 2894
2895UV
65202027 2896Perl_cast_uv(pTHX_ NV f)
5d94fbed 2897{
20cec16a 2898 if (f >= MY_UV_MAX)
2899 return (UV) MY_UV_MAX;
25da4f38
IZ		 2900 if (f < 0) {
2901 IV iv;
2902
2903 if (f < IV_MIN)
2904 return (UV)IV_MIN;
2905 iv = (IV) f;
2906 return (UV) iv;
2907 }
5d94fbed
AD		 2908 return (UV) f;
2909}
2910
fe14fcc3 2911#ifndef HAS_RENAME
79072805 2912I32
864dbfa3 2913Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2914{
93a17b20
LW		 2915 char *fa = strrchr(a,'/');
2916 char *fb = strrchr(b,'/');
62b28dd9
LW		 2917 struct stat tmpstatbuf1;
2918 struct stat tmpstatbuf2;
46fc3d4c 2919 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2920
2921 if (fa)
2922 fa++;
2923 else
2924 fa = a;
2925 if (fb)
2926 fb++;
2927 else
2928 fb = b;
2929 if (strNE(a,b))
2930 return FALSE;
2931 if (fa == a)
46fc3d4c 2932 sv_setpv(tmpsv, ".");
62b28dd9 2933 else
46fc3d4c 2934 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2935 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2936 return FALSE;
2937 if (fb == b)
46fc3d4c 2938 sv_setpv(tmpsv, ".");
62b28dd9 2939 else
46fc3d4c 2940 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2941 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2942 return FALSE;
2943 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2944 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2945}
fe14fcc3
LW		 2946#endif /* !HAS_RENAME */
2947
9e24b6e2 2948NV
ba210ebe 2949Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
4f19785b
WSI		 2950{
2951 register char *s = start;
9e24b6e2
JH		 2952 register NV rnv = 0.0;
2953 register UV ruv = 0;
252aa082 2954 register bool seenb = FALSE;
9e24b6e2 2955 register bool overflowed = FALSE;
252aa082
JH		 2956
2957 for (; len-- && *s; s++) {
2958 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2959 if (*s == '_' && len && *retlen
2960 && (s[1] == '0' || s[1] == '1'))
2961 {
2962 --len;
2963 ++s;
2964 }
2965 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2966 /* Disallow 0bbb0b0bbb... */
2967 seenb = TRUE;
252aa082
JH		 2968 continue;
2969 }
2970 else {
2971 dTHR;
627300f0
JH		 2972 if (ckWARN(WARN_DIGIT))
2973 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2974 "Illegal binary digit '%c' ignored", *s);
2975 break;
2976 }
9e24b6e2
JH		 2977 }
2978 if (!overflowed) {
2979 register UV xuv = ruv << 1;
2980
2981 if ((xuv >> 1) != ruv) {
2982 dTHR;
2983 overflowed = TRUE;
2984 rnv = (NV) ruv;
627300f0
JH		 2985 if (ckWARN_d(WARN_OVERFLOW))
2986 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2987 "Integer overflow in binary number");
b21ed0a9
GS		 2988 }
2989 else
9e24b6e2
JH		 2990 ruv = xuv | (*s - '0');
2991 }
2992 if (overflowed) {
2993 rnv *= 2;
2994 /* If an NV has not enough bits in its mantissa to
2995 * represent an UV this summing of small low-order numbers
2996 * is a waste of time (because the NV cannot preserve
2997 * the low-order bits anyway): we could just remember when
2998 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2999 * right amount. */
9e24b6e2 3000 rnv += (*s - '0');
f248d071 3001 }
4f19785b 3002 }
9e24b6e2
JH		 3003 if (!overflowed)
3004 rnv = (NV) ruv;
893fe2c2 3005 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3006#if UVSIZE > 4
893fe2c2
JH		 3007 || (!overflowed && ruv > 0xffffffff )
3008#endif
3009 ) {
252aa082 3010 dTHR;
627300f0
JH		 3011 if (ckWARN(WARN_PORTABLE))
3012 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3013 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 3014 }
3015 *retlen = s - start;
9e24b6e2 3016 return rnv;
4f19785b 3017}
9e24b6e2
JH		 3018
3019NV
ba210ebe 3020Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3021{
3022 register char *s = start;
9e24b6e2
JH		 3023 register NV rnv = 0.0;
3024 register UV ruv = 0;
3025 register bool overflowed = FALSE;
252aa082
JH		 3026
3027 for (; len-- && *s; s++) {
3028 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 3029 if (*s == '_' && len && *retlen
3030 && (s[1] >= '0' && s[1] <= '7'))
3031 {
3032 --len;
3033 ++s;
3034 }
252aa082 3035 else {
f84f607d
JH		 3036 /* Allow \octal to work the DWIM way (that is, stop scanning
3037 * as soon as non-octal characters are seen, complain only iff
3038 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 3039 if (*s == '8' || *s == '9') {
3040 dTHR;
627300f0
JH		 3041 if (ckWARN(WARN_DIGIT))
3042 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 3043 "Illegal octal digit '%c' ignored", *s);
3044 }
3045 break;
3046 }
55497cff 3047 }
9e24b6e2 3048 if (!overflowed) {
893fe2c2 3049 register UV xuv = ruv << 3;
9e24b6e2
JH		 3050
3051 if ((xuv >> 3) != ruv) {
3052 dTHR;
3053 overflowed = TRUE;
3054 rnv = (NV) ruv;
627300f0
JH		 3055 if (ckWARN_d(WARN_OVERFLOW))
3056 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3057 "Integer overflow in octal number");
b21ed0a9
GS		 3058 }
3059 else
9e24b6e2
JH		 3060 ruv = xuv | (*s - '0');
3061 }
3062 if (overflowed) {
3063 rnv *= 8.0;
3064 /* If an NV has not enough bits in its mantissa to
3065 * represent an UV this summing of small low-order numbers
3066 * is a waste of time (because the NV cannot preserve
3067 * the low-order bits anyway): we could just remember when
3068 * did we overflow and in the end just multiply rnv by the
3069 * right amount of 8-tuples. */
3070 rnv += (NV)(*s - '0');
3071 }
fe14fcc3 3072 }
9e24b6e2
JH		 3073 if (!overflowed)
3074 rnv = (NV) ruv;
893fe2c2 3075 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3076#if UVSIZE > 4
893fe2c2
JH		 3077 || (!overflowed && ruv > 0xffffffff )
3078#endif
3079 ) {
d008e5eb 3080 dTHR;
627300f0
JH		 3081 if (ckWARN(WARN_PORTABLE))
3082 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3083 "Octal number > 037777777777 non-portable");
d008e5eb 3084 }
fe14fcc3 3085 *retlen = s - start;
9e24b6e2 3086 return rnv;
fe14fcc3
LW		 3087}
3088
9e24b6e2 3089NV
ba210ebe 3090Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3091{
3092 register char *s = start;
9e24b6e2
JH		 3093 register NV rnv = 0.0;
3094 register UV ruv = 0;
252aa082 3095 register bool seenx = FALSE;
9e24b6e2 3096 register bool overflowed = FALSE;
9e24b6e2 3097 char *hexdigit;
fe14fcc3 3098
9e24b6e2
JH		 3099 for (; len-- && *s; s++) {
3100 hexdigit = strchr((char *) PL_hexdigit, *s);
3101 if (!hexdigit) {
b21ed0a9
GS		 3102 if (*s == '_' && len && *retlen && s[1]
3103 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3104 {
3105 --len;
3106 ++s;
3107 }
3108 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3109 /* Disallow 0xxx0x0xxx... */
3110 seenx = TRUE;
252aa082
JH		 3111 continue;
3112 }
a0ed51b3 3113 else {
d008e5eb 3114 dTHR;
627300f0
JH		 3115 if (ckWARN(WARN_DIGIT))
3116 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3117 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3118 break;
3119 }
3120 }
9e24b6e2
JH		 3121 if (!overflowed) {
3122 register UV xuv = ruv << 4;
3123
3124 if ((xuv >> 4) != ruv) {
3125 dTHR;
3126 overflowed = TRUE;
3127 rnv = (NV) ruv;
627300f0
JH		 3128 if (ckWARN_d(WARN_OVERFLOW))
3129 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3130 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3131 }
3132 else
9e24b6e2
JH		 3133 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3134 }
3135 if (overflowed) {
3136 rnv *= 16.0;
3137 /* If an NV has not enough bits in its mantissa to
3138 * represent an UV this summing of small low-order numbers
3139 * is a waste of time (because the NV cannot preserve
3140 * the low-order bits anyway): we could just remember when
3141 * did we overflow and in the end just multiply rnv by the
3142 * right amount of 16-tuples. */
3143 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3144 }
6ff81951 3145 }
9e24b6e2
JH		 3146 if (!overflowed)
3147 rnv = (NV) ruv;
893fe2c2 3148 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3149#if UVSIZE > 4
893fe2c2
JH		 3150 || (!overflowed && ruv > 0xffffffff )
3151#endif
3152 ) {
252aa082 3153 dTHR;
627300f0
JH		 3154 if (ckWARN(WARN_PORTABLE))
3155 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3156 "Hexadecimal number > 0xffffffff non-portable");
3157 }
fe14fcc3 3158 *retlen = s - start;
9e24b6e2 3159 return rnv;
fe14fcc3 3160}
760ac839 3161
491527d0 3162char*
864dbfa3 3163Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3164{
3165 dTHR;
3166 char *xfound = Nullch;
3167 char *xfailed = Nullch;
0f31cffe 3168 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3169 register char *s;
3170 I32 len;
3171 int retval;
3172#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3173# define SEARCH_EXTS ".bat", ".cmd", NULL
3174# define MAX_EXT_LEN 4
3175#endif
3176#ifdef OS2
3177# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3178# define MAX_EXT_LEN 4
3179#endif
3180#ifdef VMS
3181# define SEARCH_EXTS ".pl", ".com", NULL
3182# define MAX_EXT_LEN 4
3183#endif
3184 /* additional extensions to try in each dir if scriptname not found */
3185#ifdef SEARCH_EXTS
3186 char *exts[] = { SEARCH_EXTS };
3187 char **ext = search_ext ? search_ext : exts;
3188 int extidx = 0, i = 0;
3189 char *curext = Nullch;
3190#else
3191# define MAX_EXT_LEN 0
3192#endif
3193
3194 /*
3195 * If dosearch is true and if scriptname does not contain path
3196 * delimiters, search the PATH for scriptname.
3197 *
3198 * If SEARCH_EXTS is also defined, will look for each
3199 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3200 * while searching the PATH.
3201 *
3202 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3203 * proceeds as follows:
3204 * If DOSISH or VMSISH:
3205 * + look for ./scriptname{,.foo,.bar}
3206 * + search the PATH for scriptname{,.foo,.bar}
3207 *
3208 * If !DOSISH:
3209 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3210 * this will not look in '.' if it's not in the PATH)
3211 */
84486fc6 3212 tmpbuf[0] = '\0';
491527d0
GS		 3213
3214#ifdef VMS
3215# ifdef ALWAYS_DEFTYPES
3216 len = strlen(scriptname);
3217 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3218 int hasdir, idx = 0, deftypes = 1;
3219 bool seen_dot = 1;
3220
3221 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3222# else
3223 if (dosearch) {
3224 int hasdir, idx = 0, deftypes = 1;
3225 bool seen_dot = 1;
3226
3227 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3228# endif
3229 /* The first time through, just add SEARCH_EXTS to whatever we
3230 * already have, so we can check for default file types. */
3231 while (deftypes ||
84486fc6 3232 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3233 {
3234 if (deftypes) {
3235 deftypes = 0;
84486fc6 3236 *tmpbuf = '\0';
491527d0 3237 }
84486fc6
GS		 3238 if ((strlen(tmpbuf) + strlen(scriptname)
3239 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3240 continue; /* don't search dir with too-long name */
84486fc6 3241 strcat(tmpbuf, scriptname);
491527d0
GS		 3242#else /* !VMS */
3243
3244#ifdef DOSISH
3245 if (strEQ(scriptname, "-"))
3246 dosearch = 0;
3247 if (dosearch) { /* Look in '.' first. */
3248 char *cur = scriptname;
3249#ifdef SEARCH_EXTS
3250 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3251 while (ext[i])
3252 if (strEQ(ext[i++],curext)) {
3253 extidx = -1; /* already has an ext */
3254 break;
3255 }
3256 do {
3257#endif
3258 DEBUG_p(PerlIO_printf(Perl_debug_log,
3259 "Looking for %s\n",cur));
017f25f1
IZ		 3260 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3261 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3262 dosearch = 0;
3263 scriptname = cur;
3264#ifdef SEARCH_EXTS
3265 break;
3266#endif
3267 }
3268#ifdef SEARCH_EXTS
3269 if (cur == scriptname) {
3270 len = strlen(scriptname);
84486fc6 3271 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3272 break;
84486fc6 3273 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3274 }
3275 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3276 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3277#endif
3278 }
3279#endif
3280
cd39f2b6
JH		 3281#ifdef MACOS_TRADITIONAL
3282 if (dosearch && !strchr(scriptname, ':') &&
3283 (s = PerlEnv_getenv("Commands")))
3284#else
491527d0
GS		 3285 if (dosearch && !strchr(scriptname, '/')
3286#ifdef DOSISH
3287 && !strchr(scriptname, '\\')
3288#endif
cd39f2b6
JH		 3289 && (s = PerlEnv_getenv("PATH")))
3290#endif
3291 {
491527d0
GS		 3292 bool seen_dot = 0;
3293
3280af22
NIS		 3294 PL_bufend = s + strlen(s);
3295 while (s < PL_bufend) {
cd39f2b6
JH		 3296#ifdef MACOS_TRADITIONAL
3297 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3298 ',',
3299 &len);
3300#else
491527d0
GS		 3301#if defined(atarist) || defined(DOSISH)
3302 for (len = 0; *s
3303# ifdef atarist
3304 && *s != ','
3305# endif
3306 && *s != ';'; len++, s++) {
84486fc6
GS		 3307 if (len < sizeof tmpbuf)
3308 tmpbuf[len] = *s;
491527d0 3309 }
84486fc6
GS		 3310 if (len < sizeof tmpbuf)
3311 tmpbuf[len] = '\0';
491527d0 3312#else /* ! (atarist || DOSISH) */
3280af22 3313 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3314 ':',
3315 &len);
3316#endif /* ! (atarist || DOSISH) */
cd39f2b6 3317#endif /* MACOS_TRADITIONAL */
3280af22 3318 if (s < PL_bufend)
491527d0 3319 s++;
84486fc6 3320 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3321 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3322#ifdef MACOS_TRADITIONAL
3323 if (len && tmpbuf[len - 1] != ':')
3324 tmpbuf[len++] = ':';
3325#else
491527d0 3326 if (len
61ae2fbf 3327#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3328 && tmpbuf[len - 1] != '/'
3329 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3330#endif
3331 )
84486fc6
GS		 3332 tmpbuf[len++] = '/';
3333 if (len == 2 && tmpbuf[0] == '.')
491527d0 3334 seen_dot = 1;
cd39f2b6 3335#endif
84486fc6 3336 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3337#endif /* !VMS */
3338
3339#ifdef SEARCH_EXTS
84486fc6 3340 len = strlen(tmpbuf);
491527d0
GS		 3341 if (extidx > 0) /* reset after previous loop */
3342 extidx = 0;
3343 do {
3344#endif
84486fc6 3345 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3346 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3347 if (S_ISDIR(PL_statbuf.st_mode)) {
3348 retval = -1;
3349 }
491527d0
GS		 3350#ifdef SEARCH_EXTS
3351 } while ( retval < 0 /* not there */
3352 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3353 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3354 );
3355#endif
3356 if (retval < 0)
3357 continue;
3280af22
NIS		 3358 if (S_ISREG(PL_statbuf.st_mode)
3359 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3360#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3361 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3362#endif
3363 )
3364 {
84486fc6 3365 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3366 break;
3367 }
3368 if (!xfailed)
84486fc6 3369 xfailed = savepv(tmpbuf);
491527d0
GS		 3370 }
3371#ifndef DOSISH
017f25f1
IZ		 3372 if (!xfound && !seen_dot && !xfailed &&
3373 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3374 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3375#endif
3376 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3377 if (!xfound) {
3378 if (flags & 1) { /* do or die? */
cea2e8a9 3379 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3380 (xfailed ? "execute" : "find"),
3381 (xfailed ? xfailed : scriptname),
3382 (xfailed ? "" : " on PATH"),
3383 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3384 }
3385 scriptname = Nullch;
3386 }
491527d0
GS		 3387 if (xfailed)
3388 Safefree(xfailed);
3389 scriptname = xfound;
3390 }
9ccb31f9 3391 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3392}
3393
ba869deb
GS		 3394#ifndef PERL_GET_CONTEXT_DEFINED
3395
3396void *
3397Perl_get_context(void)
3398{
3399#if defined(USE_THREADS) || defined(USE_ITHREADS)
3400# ifdef OLD_PTHREADS_API
3401 pthread_addr_t t;
3402 if (pthread_getspecific(PL_thr_key, &t))
3403 Perl_croak_nocontext("panic: pthread_getspecific");
3404 return (void*)t;
3405# else
c44d3fdb
GS		 3406# ifdef I_MACH_CTHREADS
3407 return (void*)cthread_data(cthread_self());
3408# else
ba869deb
GS		 3409 return (void*)pthread_getspecific(PL_thr_key);
3410# endif
c44d3fdb 3411# endif
ba869deb
GS		 3412#else
3413 return (void*)NULL;
3414#endif
3415}
3416
3417void
3418Perl_set_context(void *t)
3419{
3420#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3421# ifdef I_MACH_CTHREADS
3422 cthread_set_data(cthread_self(), t);
3423# else
ba869deb
GS		 3424 if (pthread_setspecific(PL_thr_key, t))
3425 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3426# endif
ba869deb
GS		 3427#endif
3428}
3429
3430#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3431
11343788 3432#ifdef USE_THREADS
ba869deb 3433
12ca11f6
MB		 3434#ifdef FAKE_THREADS
3435/* Very simplistic scheduler for now */
3436void
3437schedule(void)
3438{
c7848ba1 3439 thr = thr->i.next_run;
12ca11f6
MB		 3440}
3441
3442void
864dbfa3 3443Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3444{
3445 *cp = 0;
3446}
3447
3448void
864dbfa3 3449Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3450{
51dd5992 3451 perl_os_thread t;
12ca11f6
MB		 3452 perl_cond cond = *cp;
3453
3454 if (!cond)
3455 return;
3456 t = cond->thread;
3457 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3458 t->i.next_run = thr->i.next_run;
3459 thr->i.next_run->i.prev_run = t;
3460 t->i.prev_run = thr;
3461 thr->i.next_run = t;
3462 thr->i.wait_queue = 0;
12ca11f6
MB		 3463 /* Remove from the wait queue */
3464 *cp = cond->next;
3465 Safefree(cond);
3466}
3467
3468void
864dbfa3 3469Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3470{
51dd5992 3471 perl_os_thread t;
12ca11f6
MB		 3472 perl_cond cond, cond_next;
3473
3474 for (cond = *cp; cond; cond = cond_next) {
3475 t = cond->thread;
3476 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3477 t->i.next_run = thr->i.next_run;
3478 thr->i.next_run->i.prev_run = t;
3479 t->i.prev_run = thr;
3480 thr->i.next_run = t;
3481 thr->i.wait_queue = 0;
12ca11f6
MB		 3482 /* Remove from the wait queue */
3483 cond_next = cond->next;
3484 Safefree(cond);
3485 }
3486 *cp = 0;
3487}
3488
3489void
864dbfa3 3490Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3491{
3492 perl_cond cond;
3493
c7848ba1 3494 if (thr->i.next_run == thr)
cea2e8a9 3495 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3496
0f15f207 3497 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3498 cond->thread = thr;
3499 cond->next = *cp;
3500 *cp = cond;
c7848ba1 3501 thr->i.wait_queue = cond;
12ca11f6 3502 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3503 thr->i.next_run->i.prev_run = thr->i.prev_run;
3504 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3505}
3506#endif /* FAKE_THREADS */
3507
f93b4edd 3508MAGIC *
864dbfa3 3509Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3510{
3511 MAGIC *mg;
3512
3513 SvUPGRADE(sv, SVt_PVMG);
3514 mg = mg_find(sv, 'm');
3515 if (!mg) {
3516 condpair_t *cp;
3517
3518 New(53, cp, 1, condpair_t);
3519 MUTEX_INIT(&cp->mutex);
3520 COND_INIT(&cp->owner_cond);
3521 COND_INIT(&cp->cond);
3522 cp->owner = 0;
1feb2720 3523 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3524 mg = mg_find(sv, 'm');
3525 if (mg) {
3526 /* someone else beat us to initialising it */
1feb2720 3527 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3528 MUTEX_DESTROY(&cp->mutex);
3529 COND_DESTROY(&cp->owner_cond);
3530 COND_DESTROY(&cp->cond);
3531 Safefree(cp);
3532 }
3533 else {
3534 sv_magic(sv, Nullsv, 'm', 0, 0);
3535 mg = SvMAGIC(sv);
3536 mg->mg_ptr = (char *)cp;
565764a8 3537 mg->mg_len = sizeof(cp);
1feb2720 3538 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3539 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3540 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3541 }
3542 }
3543 return mg;
3544}
a863c7d1 3545
3d35f11b 3546SV *
4755096e 3547Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS		 3548{
3549 MAGIC *mg;
3550 SV *sv = osv;
3551
631cfb58 3552 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS		 3553 if (SvROK(sv)) {
3554 sv = SvRV(sv);
3d35f11b
GS		 3555 }
3556
3557 mg = condpair_magic(sv);
3558 MUTEX_LOCK(MgMUTEXP(mg));
3559 if (MgOWNER(mg) == thr)
3560 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3561 else {
3d35f11b
GS		 3562 while (MgOWNER(mg))
3563 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3564 MgOWNER(mg) = thr;
4755096e
GS		 3565 DEBUG_S(PerlIO_printf(Perl_debug_log,
3566 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS		 3567 PTR2UV(thr), PTR2UV(sv));)
3568 MUTEX_UNLOCK(MgMUTEXP(mg));
3569 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3570 }
631cfb58 3571 UNLOCK_SV_LOCK_MUTEX;
4755096e 3572 return sv;
3d35f11b
GS		 3573}
3574
a863c7d1 3575/*
199100c8
MB		 3576 * Make a new perl thread structure using t as a prototype. Some of the
3577 * fields for the new thread are copied from the prototype thread, t,
3578 * so t should not be running in perl at the time this function is
3579 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3580 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3581 */
52e1cb5e 3582struct perl_thread *
864dbfa3 3583Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3584{
c5be433b 3585#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3586 struct perl_thread *thr;
cea2e8a9 3587#endif
a863c7d1 3588 SV *sv;
199100c8
MB		 3589 SV **svp;
3590 I32 i;
3591
79cb57f6 3592 sv = newSVpvn("", 0);
52e1cb5e
JH		 3593 SvGROW(sv, sizeof(struct perl_thread) + 1);
3594 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3595 thr = (Thread) SvPVX(sv);
949ced2d 3596#ifdef DEBUGGING
52e1cb5e 3597 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3598 PL_markstack = 0;
3599 PL_scopestack = 0;
3600 PL_savestack = 0;
3601 PL_retstack = 0;
3602 PL_dirty = 0;
3603 PL_localizing = 0;
949ced2d 3604 Zero(&PL_hv_fetch_ent_mh, 1, HE);
d0e9ca0c
HS		 3605 PL_efloatbuf = (char*)NULL;
3606 PL_efloatsize = 0;
949ced2d
GS		 3607#else
3608 Zero(thr, 1, struct perl_thread);
3609#endif
199100c8
MB		 3610
3611 thr->oursv = sv;
cea2e8a9 3612 init_stacks();
a863c7d1 3613
533c011a 3614 PL_curcop = &PL_compiling;
c5be433b 3615 thr->interp = t->interp;
199100c8