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Integrate changes #7971(perlio),8982,9061,9062,9068,9069,
[perl5.git] / util.c
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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
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24 23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
a687059c
LW		 27#ifdef I_VFORK
28# include <vfork.h>
29#endif
30
94b6baf5
AD		 31/* Put this after #includes because fork and vfork prototypes may
32 conflict.
33*/
34#ifndef HAS_VFORK
35# define vfork fork
36#endif
37
ff68c719 38#ifdef I_SYS_WAIT
39# include <sys/wait.h>
40#endif
41
097ee67d
JH		 42#ifdef I_LOCALE
43# include <locale.h>
44#endif
45
8d063cd8 46#define FLUSH
8d063cd8 47
a0d0e21e 48#ifdef LEAKTEST
a0d0e21e 49
8c52afec
IZ		 50long xcount[MAXXCOUNT];
51long lastxcount[MAXXCOUNT];
52long xycount[MAXXCOUNT][MAXYCOUNT];
53long lastxycount[MAXXCOUNT][MAXYCOUNT];
54
a0d0e21e 55#endif
a863c7d1 56
16cebae2
GS		 57#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
58# define FD_CLOEXEC 1 /* NeXT needs this */
59#endif
60
f2517201 61/* paranoid version of system's malloc() */
8d063cd8 62
a687059c
LW		 63/* NOTE: Do not call the next three routines directly. Use the macros
64 * in handy.h, so that we can easily redefine everything to do tracking of
65 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 66 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 67 */
68
bd4080b3 69Malloc_t
4f63d024 70Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 71{
54aff467 72 dTHX;
bd4080b3 73 Malloc_t ptr;
55497cff 74#ifdef HAS_64K_LIMIT
62b28dd9 75 if (size > 0xffff) {
bf49b057 76 PerlIO_printf(Perl_error_log,
16cebae2 77 "Allocation too large: %lx\n", size) FLUSH;
54aff467 78 my_exit(1);
62b28dd9 79 }
55497cff 80#endif /* HAS_64K_LIMIT */
34de22dd
LW		 81#ifdef DEBUGGING
82 if ((long)size < 0)
4f63d024 83 Perl_croak_nocontext("panic: malloc");
34de22dd 84#endif
6ad3d225 85 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 86 PERL_ALLOC_CHECK(ptr);
97835f67 87 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 88 if (ptr != Nullch)
89 return ptr;
3280af22 90 else if (PL_nomemok)
7c0587c8 91 return Nullch;
8d063cd8 92 else {
bf49b057 93 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 94 my_exit(1);
4e35701f 95 return Nullch;
8d063cd8
LW		 96 }
97 /*NOTREACHED*/
98}
99
f2517201 100/* paranoid version of system's realloc() */
8d063cd8 101
bd4080b3 102Malloc_t
4f63d024 103Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 104{
54aff467 105 dTHX;
bd4080b3 106 Malloc_t ptr;
9a34ef1d 107#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 108 Malloc_t PerlMem_realloc();
ecfc5424 109#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 110
55497cff 111#ifdef HAS_64K_LIMIT
5f05dabc 112 if (size > 0xffff) {
bf49b057 113 PerlIO_printf(Perl_error_log,
5f05dabc 114 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 115 my_exit(1);
5f05dabc 116 }
55497cff 117#endif /* HAS_64K_LIMIT */
7614df0c 118 if (!size) {
f2517201 119 safesysfree(where);
7614df0c
JD		 120 return NULL;
121 }
122
378cc40b 123 if (!where)
f2517201 124 return safesysmalloc(size);
34de22dd
LW		 125#ifdef DEBUGGING
126 if ((long)size < 0)
4f63d024 127 Perl_croak_nocontext("panic: realloc");
34de22dd 128#endif
7614df0c 129 ptr = PerlMem_realloc(where,size);
da927450 130 PERL_ALLOC_CHECK(ptr);
cd39f2b6 131
97835f67
JH		 132 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
133 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 134
8d063cd8
LW		 135 if (ptr != Nullch)
136 return ptr;
3280af22 137 else if (PL_nomemok)
7c0587c8 138 return Nullch;
8d063cd8 139 else {
bf49b057 140 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 141 my_exit(1);
4e35701f 142 return Nullch;
8d063cd8
LW		 143 }
144 /*NOTREACHED*/
145}
146
f2517201 147/* safe version of system's free() */
8d063cd8 148
54310121 149Free_t
4f63d024 150Perl_safesysfree(Malloc_t where)
8d063cd8 151{
155aba94 152#ifdef PERL_IMPLICIT_SYS
54aff467 153 dTHX;
155aba94 154#endif
97835f67 155 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 156 if (where) {
de3bb511 157 /*SUPPRESS 701*/
6ad3d225 158 PerlMem_free(where);
378cc40b 159 }
8d063cd8
LW		 160}
161
f2517201 162/* safe version of system's calloc() */
1050c9ca 163
bd4080b3 164Malloc_t
4f63d024 165Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 166{
54aff467 167 dTHX;
bd4080b3 168 Malloc_t ptr;
1050c9ca 169
55497cff 170#ifdef HAS_64K_LIMIT
5f05dabc 171 if (size * count > 0xffff) {
bf49b057 172 PerlIO_printf(Perl_error_log,
5f05dabc 173 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 174 my_exit(1);
5f05dabc 175 }
55497cff 176#endif /* HAS_64K_LIMIT */
1050c9ca 177#ifdef DEBUGGING
178 if ((long)size < 0 || (long)count < 0)
4f63d024 179 Perl_croak_nocontext("panic: calloc");
1050c9ca 180#endif
0b7c1c42 181 size *= count;
6ad3d225 182 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 183 PERL_ALLOC_CHECK(ptr);
97835f67 184 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 185 if (ptr != Nullch) {
186 memset((void*)ptr, 0, size);
187 return ptr;
188 }
3280af22 189 else if (PL_nomemok)
1050c9ca 190 return Nullch;
191 else {
bf49b057 192 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 193 my_exit(1);
4e35701f 194 return Nullch;
1050c9ca 195 }
196 /*NOTREACHED*/
197}
198
a687059c
LW		 199#ifdef LEAKTEST
200
8c52afec
IZ		 201struct mem_test_strut {
202 union {
203 long type;
204 char c[2];
205 } u;
206 long size;
207};
208
209# define ALIGN sizeof(struct mem_test_strut)
210
211# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
212# define typeof_chunk(ch) \
213 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
214# define set_typeof_chunk(ch,t) \
215 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
216#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
217 ? MAXYCOUNT - 1 \
218 : ( (size) > 40 \
219 ? ((size) - 1)/8 + 5 \
220 : ((size) - 1)/4))
8d063cd8 221
bd4080b3 222Malloc_t
4f63d024 223Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 224{
8c52afec 225 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 226
8c52afec
IZ		 227 xcount[x] += size;
228 xycount[x][SIZE_TO_Y(size)]++;
229 set_typeof_chunk(where, x);
230 sizeof_chunk(where) = size;
231 return (Malloc_t)(where + ALIGN);
8d063cd8 232}
8d063cd8 233
bd4080b3 234Malloc_t
4f63d024 235Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 236{
8c52afec
IZ		 237 char *where = (char*)wh;
238
239 if (!wh)
240 return safexmalloc(0,size);
241
242 {
243 MEM_SIZE old = sizeof_chunk(where - ALIGN);
244 int t = typeof_chunk(where - ALIGN);
245 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
246
247 xycount[t][SIZE_TO_Y(old)]--;
248 xycount[t][SIZE_TO_Y(size)]++;
249 xcount[t] += size - old;
250 sizeof_chunk(new) = size;
251 return (Malloc_t)(new + ALIGN);
252 }
a687059c
LW		 253}
254
255void
4f63d024 256Perl_safexfree(Malloc_t wh)
a687059c 257{
79072805 258 I32 x;
8c52afec
IZ		 259 char *where = (char*)wh;
260 MEM_SIZE size;
261
a687059c
LW		 262 if (!where)
263 return;
264 where -= ALIGN;
8c52afec 265 size = sizeof_chunk(where);
a687059c 266 x = where[0] + 100 * where[1];
8c52afec
IZ		 267 xcount[x] -= size;
268 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 269 safefree(where);
270}
271
bd4080b3 272Malloc_t
4f63d024 273Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 274{
8c52afec
IZ		 275 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
276 xcount[x] += size;
277 xycount[x][SIZE_TO_Y(size)]++;
278 memset((void*)(where + ALIGN), 0, size * count);
279 set_typeof_chunk(where, x);
280 sizeof_chunk(where) = size;
281 return (Malloc_t)(where + ALIGN);
1050c9ca 282}
283
864dbfa3 284STATIC void
cea2e8a9 285S_xstat(pTHX_ int flag)
8d063cd8 286{
8c52afec
IZ		 287 register I32 i, j, total = 0;
288 I32 subtot[MAXYCOUNT];
8d063cd8 289
8c52afec
IZ		 290 for (j = 0; j < MAXYCOUNT; j++) {
291 subtot[j] = 0;
292 }
293
bf49b057 294 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 295 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 296 total += xcount[i];
297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] += xycount[i][j];
299 }
300 if (flag == 0
301 ? xcount[i] /* Have something */
302 : (flag == 2
303 ? xcount[i] != lastxcount[i] /* Changed */
304 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 305 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 306 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 307 lastxcount[i] = xcount[i];
8c52afec
IZ		 308 for (j = 0; j < MAXYCOUNT; j++) {
309 if ( flag == 0
310 ? xycount[i][j] /* Have something */
311 : (flag == 2
312 ? xycount[i][j] != lastxycount[i][j] /* Changed */
313 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 314 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ		 315 flag == 2
316 ? xycount[i][j] - lastxycount[i][j]
317 : xycount[i][j]);
318 lastxycount[i][j] = xycount[i][j];
319 } else {
bf49b057 320 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 321 }
322 }
bf49b057 323 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 324 }
325 }
326 if (flag != 2) {
bf49b057 327 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 328 for (j = 0; j < MAXYCOUNT; j++) {
329 if (subtot[j]) {
bf49b057 330 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 331 } else {
bf49b057 332 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 333 }
8d063cd8 334 }
bf49b057 335 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 336 }
8d063cd8 337}
a687059c
LW		 338
339#endif /* LEAKTEST */
8d063cd8
LW		 340
341/* copy a string up to some (non-backslashed) delimiter, if any */
342
343char *
864dbfa3 344Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 345{
fc36a67e 346 register I32 tolen;
347 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 348 if (*from == '\\') {
349 if (from[1] == delim)
350 from++;
fc36a67e 351 else {
352 if (to < toend)
353 *to++ = *from;
354 tolen++;
355 from++;
356 }
378cc40b 357 }
bedebaa5 358 else if (*from == delim)
8d063cd8 359 break;
fc36a67e 360 if (to < toend)
361 *to++ = *from;
8d063cd8 362 }
bedebaa5
CS		 363 if (to < toend)
364 *to = '\0';
fc36a67e 365 *retlen = tolen;
8d063cd8
LW		 366 return from;
367}
368
369/* return ptr to little string in big string, NULL if not found */
378cc40b 370/* This routine was donated by Corey Satten. */
8d063cd8
LW		 371
372char *
864dbfa3 373Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 374{
08105a92 375 register const char *s, *x;
79072805 376 register I32 first;
378cc40b 377
a687059c 378 if (!little)
08105a92 379 return (char*)big;
a687059c 380 first = *little++;
378cc40b 381 if (!first)
08105a92 382 return (char*)big;
378cc40b
LW		 383 while (*big) {
384 if (*big++ != first)
385 continue;
386 for (x=big,s=little; *s; /**/ ) {
387 if (!*x)
388 return Nullch;
389 if (*s++ != *x++) {
390 s--;
391 break;
392 }
393 }
394 if (!*s)
08105a92 395 return (char*)(big-1);
378cc40b
LW		 396 }
397 return Nullch;
398}
8d063cd8 399
a687059c
LW		 400/* same as instr but allow embedded nulls */
401
402char *
864dbfa3 403Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 404{
08105a92 405 register const char *s, *x;
79072805 406 register I32 first = *little;
08105a92 407 register const char *littleend = lend;
378cc40b 408
a0d0e21e 409 if (!first && little >= littleend)
08105a92 410 return (char*)big;
de3bb511
LW		 411 if (bigend - big < littleend - little)
412 return Nullch;
a687059c
LW		 413 bigend -= littleend - little++;
414 while (big <= bigend) {
415 if (*big++ != first)
416 continue;
417 for (x=big,s=little; s < littleend; /**/ ) {
418 if (*s++ != *x++) {
419 s--;
420 break;
421 }
422 }
423 if (s >= littleend)
08105a92 424 return (char*)(big-1);
378cc40b 425 }
a687059c
LW		 426 return Nullch;
427}
428
429/* reverse of the above--find last substring */
430
431char *
864dbfa3 432Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 433{
08105a92
GS		 434 register const char *bigbeg;
435 register const char *s, *x;
79072805 436 register I32 first = *little;
08105a92 437 register const char *littleend = lend;
a687059c 438
a0d0e21e 439 if (!first && little >= littleend)
08105a92 440 return (char*)bigend;
a687059c
LW		 441 bigbeg = big;
442 big = bigend - (littleend - little++);
443 while (big >= bigbeg) {
444 if (*big-- != first)
445 continue;
446 for (x=big+2,s=little; s < littleend; /**/ ) {
447 if (*s++ != *x++) {
448 s--;
449 break;
450 }
451 }
452 if (s >= littleend)
08105a92 453 return (char*)(big+1);
378cc40b 454 }
a687059c 455 return Nullch;
378cc40b 456}
a687059c 457
bbce6d69 458/*
459 * Set up for a new ctype locale.
460 */
55497cff 461void
bd3a7847 462Perl_new_ctype(pTHX_ char *newctype)
ef7eada9 463{
36477c24 464#ifdef USE_LOCALE_CTYPE
465
bbce6d69 466 int i;
ef7eada9 467
bbce6d69 468 for (i = 0; i < 256; i++) {
469 if (isUPPER_LC(i))
22c35a8c 470 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 471 else if (isLOWER_LC(i))
22c35a8c 472 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 473 else
22c35a8c 474 PL_fold_locale[i] = i;
bbce6d69 475 }
bbce6d69 476
36477c24 477#endif /* USE_LOCALE_CTYPE */
478}
bbce6d69 479
480/*
bd3a7847
GS		 481 * Standardize the locale name from a string returned by 'setlocale'.
482 *
483 * The standard return value of setlocale() is either
484 * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
485 * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL
486 * (the space-separated values represent the various sublocales,
487 * in some unspecificed order)
488 *
489 * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n",
490 * which is harmful for further use of the string in setlocale().
491 *
492 */
493STATIC char *
494S_stdize_locale(pTHX_ char *locs)
495{
496 char *s;
497 bool okay = TRUE;
498
499 if ((s = strchr(locs, '='))) {
500 char *t;
501
502 okay = FALSE;
503 if ((t = strchr(s, '.'))) {
504 char *u;
505
506 if ((u = strchr(t, '\n'))) {
507
508 if (u[1] == 0) {
509 STRLEN len = u - s;
a7a7ba7c 510 Move(s + 1, locs, len, char);
bd3a7847
GS		 511 locs[len] = 0;
512 okay = TRUE;
513 }
514 }
515 }
516 }
517
518 if (!okay)
519 Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
520
521 return locs;
522}
523
524/*
bbce6d69 525 * Set up for a new collation locale.
526 */
527void
bd3a7847 528Perl_new_collate(pTHX_ char *newcoll)
bbce6d69 529{
36477c24 530#ifdef USE_LOCALE_COLLATE
531
bbce6d69 532 if (! newcoll) {
3280af22
NIS		 533 if (PL_collation_name) {
534 ++PL_collation_ix;
535 Safefree(PL_collation_name);
536 PL_collation_name = NULL;
bbce6d69 537 }
bd3a7847
GS		 538 PL_collation_standard = TRUE;
539 PL_collxfrm_base = 0;
540 PL_collxfrm_mult = 2;
bbce6d69 541 return;
542 }
543
3280af22
NIS		 544 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
545 ++PL_collation_ix;
546 Safefree(PL_collation_name);
bd3a7847 547 PL_collation_name = stdize_locale(savepv(newcoll));
3280af22 548 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 549
bbce6d69 550 {
551 /* 2: at most so many chars ('a', 'b'). */
552 /* 50: surely no system expands a char more. */
553#define XFRMBUFSIZE (2 * 50)
554 char xbuf[XFRMBUFSIZE];
555 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
556 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
557 SSize_t mult = fb - fa;
558 if (mult < 1)
cea2e8a9 559 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 560 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
561 PL_collxfrm_mult = mult;
bbce6d69 562 }
bbce6d69 563 }
bbce6d69 564
36477c24 565#endif /* USE_LOCALE_COLLATE */
566}
bbce6d69 567
097ee67d 568void
51371543 569Perl_set_numeric_radix(pTHX)
097ee67d
JH		 570{
571#ifdef USE_LOCALE_NUMERIC
572# ifdef HAS_LOCALECONV
573 struct lconv* lc;
574
575 lc = localeconv();
e77a7f40
JH		 576 if (lc && lc->decimal_point) {
577 if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) {
578 SvREFCNT_dec(PL_numeric_radix_sv);
579 PL_numeric_radix_sv = 0;
580 }
581 else {
582 if (PL_numeric_radix_sv)
583 sv_setpv(PL_numeric_radix_sv, lc->decimal_point);
584 else
585 PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0);
586 }
587 }
097ee67d 588 else
e77a7f40 589 PL_numeric_radix_sv = 0;
097ee67d 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
bd3a7847 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 }
bd3a7847
GS		 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);
bd3a7847 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;
bd3a7847 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
370d1739 666#if defined(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;
d6f4130b
GS		 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;
d6f4130b
GS		 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;
d6f4130b
GS		 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;
d6f4130b
GS		 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;
d6f4130b
GS		 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;
d6f4130b
GS		 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
370d1739 809#if defined(USE_ENVIRON_ARRAY)
5f05dabc 810 {
811 char **e;
812 for (e = environ; *e; e++) {
813 if (strnEQ(*e, "LC_", 3)
814 && strnNE(*e, "LC_ALL=", 7)
815 && (p = strchr(*e, '=')))
bf49b057 816 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 817 (int)(p - *e), *e, p + 1);
5f05dabc 818 }
819 }
370d1739
JH		 820#else
821 PerlIO_printf(Perl_error_log,
822 "\t(possibly more locale environment variables)\n");
823#endif
5f05dabc 824
bf49b057 825 PerlIO_printf(Perl_error_log,
bbce6d69 826 "\tLANG = %c%s%c\n",
5f05dabc 827 lang ? '"' : '(',
bbce6d69 828 lang ? lang : "unset",
829 lang ? '"' : ')');
ef7eada9 830
bf49b057 831 PerlIO_printf(Perl_error_log,
bbce6d69 832 " are supported and installed on your system.\n");
5f05dabc 833 }
ef7eada9 834
5f05dabc 835#ifdef LC_ALL
836
837 if (setlocale(LC_ALL, "C")) {
838 if (locwarn)
bf49b057 839 PerlIO_printf(Perl_error_log,
5f05dabc 840 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 841 ok = 0;
ef7eada9 842 }
5f05dabc 843 else {
844 if (locwarn)
bf49b057 845 PerlIO_printf(Perl_error_log,
5f05dabc 846 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
847 ok = -1;
848 }
bbce6d69 849
5f05dabc 850#else /* ! LC_ALL */
851
852 if (0
36477c24 853#ifdef USE_LOCALE_CTYPE
5f05dabc 854 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 855#endif /* USE_LOCALE_CTYPE */
856#ifdef USE_LOCALE_COLLATE
5f05dabc 857 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 858#endif /* USE_LOCALE_COLLATE */
859#ifdef USE_LOCALE_NUMERIC
5f05dabc 860 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 861#endif /* USE_LOCALE_NUMERIC */
5f05dabc 862 )
863 {
864 if (locwarn)
bf49b057 865 PerlIO_printf(Perl_error_log,
5f05dabc 866 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
867 ok = -1;
bbce6d69 868 }
5f05dabc 869
bbce6d69 870#endif /* ! LC_ALL */
5f05dabc 871
872#ifdef USE_LOCALE_CTYPE
d6f4130b 873 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc 874#endif /* USE_LOCALE_CTYPE */
875#ifdef USE_LOCALE_COLLATE
d6f4130b 876 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc 877#endif /* USE_LOCALE_COLLATE */
878#ifdef USE_LOCALE_NUMERIC
d6f4130b 879 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 880#endif /* USE_LOCALE_NUMERIC */
ef7eada9 881 }
d6f4130b 882 else {
ef7eada9 883
36477c24 884#ifdef USE_LOCALE_CTYPE
864dbfa3 885 new_ctype(curctype);
36477c24 886#endif /* USE_LOCALE_CTYPE */
bbce6d69 887
36477c24 888#ifdef USE_LOCALE_COLLATE
864dbfa3 889 new_collate(curcoll);
36477c24 890#endif /* USE_LOCALE_COLLATE */
bbce6d69 891
36477c24 892#ifdef USE_LOCALE_NUMERIC
864dbfa3 893 new_numeric(curnum);
36477c24 894#endif /* USE_LOCALE_NUMERIC */
d6f4130b 895 }
ef7eada9 896
370d1739 897#endif /* USE_LOCALE */
ef7eada9 898
d6f4130b
GS		 899#ifdef USE_LOCALE_CTYPE
900 if (curctype != NULL)
901 Safefree(curctype);
902#endif /* USE_LOCALE_CTYPE */
903#ifdef USE_LOCALE_COLLATE
904 if (curcoll != NULL)
905 Safefree(curcoll);
906#endif /* USE_LOCALE_COLLATE */
907#ifdef USE_LOCALE_NUMERIC
908 if (curnum != NULL)
909 Safefree(curnum);
910#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB		 911 return ok;
912}
913
bbce6d69 914/* Backwards compatibility. */
915int
864dbfa3 916Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 917{
864dbfa3 918 return init_i18nl10n(printwarn);
bbce6d69 919}
ef7eada9 920
36477c24 921#ifdef USE_LOCALE_COLLATE
ef7eada9 922
bbce6d69 923/*
924 * mem_collxfrm() is a bit like strxfrm() but with two important
925 * differences. First, it handles embedded NULs. Second, it allocates
926 * a bit more memory than needed for the transformed data itself.
927 * The real transformed data begins at offset sizeof(collationix).
928 * Please see sv_collxfrm() to see how this is used.
929 */
930char *
864dbfa3 931Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 932{
933 char *xbuf;
76e3520e 934 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 935
936 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
937 /* the +1 is for the terminating NUL. */
938
3280af22 939 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 940 New(171, xbuf, xAlloc, char);
bbce6d69 941 if (! xbuf)
942 goto bad;
943
3280af22
NIS		 944 *(U32*)xbuf = PL_collation_ix;
945 xout = sizeof(PL_collation_ix);
bbce6d69 946 for (xin = 0; xin < len; ) {
947 SSize_t xused;
948
949 for (;;) {
76e3520e 950 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 951 if (xused == -1)
952 goto bad;
76e3520e 953 if (xused < xAlloc - xout)
bbce6d69 954 break;
76e3520e
GS		 955 xAlloc = (2 * xAlloc) + 1;
956 Renew(xbuf, xAlloc, char);
bbce6d69 957 if (! xbuf)
958 goto bad;
959 }
ef7eada9 960
bbce6d69 961 xin += strlen(s + xin) + 1;
962 xout += xused;
963
964 /* Embedded NULs are understood but silently skipped
965 * because they make no sense in locale collation. */
966 }
ef7eada9 967
bbce6d69 968 xbuf[xout] = '\0';
3280af22 969 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 970 return xbuf;
971
972 bad:
973 Safefree(xbuf);
974 *xlen = 0;
975 return NULL;
ef7eada9
JH		 976}
977
36477c24 978#endif /* USE_LOCALE_COLLATE */
bbce6d69 979
cf93c79d
IZ		 980#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
981
982/* As a space optimization, we do not compile tables for strings of length
983 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
984 special-cased in fbm_instr().
985
986 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
987
954c1994
GS		 988/*
989=for apidoc fbm_compile
990
991Analyses the string in order to make fast searches on it using fbm_instr()
992-- the Boyer-Moore algorithm.
993
994=cut
995*/
996
378cc40b 997void
7506f9c3 998Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 999{
942e002e
GS		 1000 register U8 *s;
1001 register U8 *table;
79072805 1002 register U32 i;
0b71040e 1003 STRLEN len;
79072805
LW		 1004 I32 rarest = 0;
1005 U32 frequency = 256;
1006
cf93c79d
IZ		 1007 if (flags & FBMcf_TAIL)
1008 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 1009 s = (U8*)SvPV_force(sv, len);
07f14f54 1010 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 1011 if (len == 0) /* TAIL might be on on a zero-length string. */
1012 return;
02128f11 1013 if (len > 2) {
7506f9c3 1014 U8 mlen;
cf93c79d
IZ		 1015 unsigned char *sb;
1016
7506f9c3 1017 if (len > 255)
cf93c79d 1018 mlen = 255;
7506f9c3
GS		 1019 else
1020 mlen = (U8)len;
1021 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 1022 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 1023 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
1024 memset((void*)table, mlen, 256);
1025 table[-1] = (U8)flags;
02128f11 1026 i = 0;
7506f9c3 1027 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 1028 while (s >= sb) {
1029 if (table[*s] == mlen)
7506f9c3 1030 table[*s] = (U8)i;
cf93c79d
IZ		 1031 s--, i++;
1032 }
378cc40b 1033 }
bbce6d69 1034 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 1035 SvVALID_on(sv);
378cc40b 1036
463ee0b2 1037 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 1038 for (i = 0; i < len; i++) {
22c35a8c 1039 if (PL_freq[s[i]] < frequency) {
bbce6d69 1040 rarest = i;
22c35a8c 1041 frequency = PL_freq[s[i]];
378cc40b
LW		 1042 }
1043 }
79072805
LW		 1044 BmRARE(sv) = s[rarest];
1045 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 1046 BmUSEFUL(sv) = 100; /* Initial value */
1047 if (flags & FBMcf_TAIL)
1048 SvTAIL_on(sv);
7506f9c3
GS		 1049 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1050 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 1051}
1052
cf93c79d
IZ		 1053/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1054/* If SvTAIL is actually due to \Z or \z, this gives false positives
1055 if multiline */
1056
954c1994
GS		 1057/*
1058=for apidoc fbm_instr
1059
1060Returns the location of the SV in the string delimited by C<str> and
1061C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1062does not have to be fbm_compiled, but the search will not be as fast
1063then.
1064
1065=cut
1066*/
1067
378cc40b 1068char *
864dbfa3 1069Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1070{
a687059c 1071 register unsigned char *s;
cf93c79d
IZ		 1072 STRLEN l;
1073 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1074 register STRLEN littlelen = l;
1075 register I32 multiline = flags & FBMrf_MULTILINE;
1076
1077 if (bigend - big < littlelen) {
cf93c79d
IZ		 1078 if ( SvTAIL(littlestr)
1079 && (bigend - big == littlelen - 1)
1080 && (littlelen == 1
155aba94 1081 || (*big == *little && memEQ(big, little, littlelen - 1))))
cf93c79d
IZ		 1082 return (char*)big;
1083 return Nullch;
1084 }
378cc40b 1085
cf93c79d 1086 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1087
1088 if (littlelen == 1) {
1089 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1090 /* Know that bigend != big. */
1091 if (bigend[-1] == '\n')
1092 return (char *)(bigend - 1);
1093 return (char *) bigend;
1094 }
1095 s = big;
1096 while (s < bigend) {
1097 if (*s == *little)
1098 return (char *)s;
1099 s++;
1100 }
1101 if (SvTAIL(littlestr))
1102 return (char *) bigend;
1103 return Nullch;
1104 }
1105 if (!littlelen)
1106 return (char*)big; /* Cannot be SvTAIL! */
1107
1108 /* littlelen is 2 */
1109 if (SvTAIL(littlestr) && !multiline) {
1110 if (bigend[-1] == '\n' && bigend[-2] == *little)
1111 return (char*)bigend - 2;
1112 if (bigend[-1] == *little)
1113 return (char*)bigend - 1;
1114 return Nullch;
1115 }
1116 {
1117 /* This should be better than FBM if c1 == c2, and almost
1118 as good otherwise: maybe better since we do less indirection.
1119 And we save a lot of memory by caching no table. */
1120 register unsigned char c1 = little[0];
1121 register unsigned char c2 = little[1];
1122
1123 s = big + 1;
1124 bigend--;
1125 if (c1 != c2) {
1126 while (s <= bigend) {
1127 if (s[0] == c2) {
1128 if (s[-1] == c1)
1129 return (char*)s - 1;
1130 s += 2;
1131 continue;
3fe6f2dc 1132 }
cf93c79d
IZ		 1133 next_chars:
1134 if (s[0] == c1) {
1135 if (s == bigend)
1136 goto check_1char_anchor;
1137 if (s[1] == c2)
1138 return (char*)s;
1139 else {
1140 s++;
1141 goto next_chars;
1142 }
1143 }
1144 else
1145 s += 2;
1146 }
1147 goto check_1char_anchor;
1148 }
1149 /* Now c1 == c2 */
1150 while (s <= bigend) {
1151 if (s[0] == c1) {
1152 if (s[-1] == c1)
1153 return (char*)s - 1;
1154 if (s == bigend)
1155 goto check_1char_anchor;
1156 if (s[1] == c1)
1157 return (char*)s;
1158 s += 3;
02128f11 1159 }
c277df42 1160 else
cf93c79d 1161 s += 2;
c277df42 1162 }
c277df42 1163 }
cf93c79d
IZ		 1164 check_1char_anchor: /* One char and anchor! */
1165 if (SvTAIL(littlestr) && (*bigend == *little))
1166 return (char *)bigend; /* bigend is already decremented. */
1167 return Nullch;
d48672a2 1168 }
cf93c79d 1169 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1170 s = bigend - littlelen;
7506f9c3 1171 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1172 /* Automatically of length > 2 */
1173 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1174 {
bbce6d69 1175 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1176 }
1177 if (s[1] == *little
1178 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1179 {
cf93c79d 1180 return (char*)s + 1; /* how sweet it is */
7506f9c3 1181 }
02128f11
IZ		 1182 return Nullch;
1183 }
cf93c79d
IZ		 1184 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1185 char *b = ninstr((char*)big,(char*)bigend,
1186 (char*)little, (char*)little + littlelen);
1187
1188 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1189 /* Chop \n from littlestr: */
1190 s = bigend - littlelen + 1;
7506f9c3
GS		 1191 if (*s == *little
1192 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1193 {
3fe6f2dc 1194 return (char*)s;
7506f9c3 1195 }
cf93c79d 1196 return Nullch;
a687059c 1197 }
cf93c79d 1198 return b;
a687059c 1199 }
cf93c79d
IZ		 1200
1201 { /* Do actual FBM. */
1202 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1203 register unsigned char *oldlittle;
1204
1205 if (littlelen > bigend - big)
1206 return Nullch;
1207 --littlelen; /* Last char found by table lookup */
1208
1209 s = big + littlelen;
1210 little += littlelen; /* last char */
1211 oldlittle = little;
1212 if (s < bigend) {
1213 register I32 tmp;
1214
1215 top2:
1216 /*SUPPRESS 560*/
7506f9c3 1217 if ((tmp = table[*s])) {
62b28dd9 1218#ifdef POINTERRIGOR
cf93c79d
IZ		 1219 if (bigend - s > tmp) {
1220 s += tmp;
1221 goto top2;
1222 }
bbce6d69 1223 s += tmp;
62b28dd9 1224#else
cf93c79d 1225 if ((s += tmp) < bigend)
62b28dd9 1226 goto top2;
cf93c79d
IZ		 1227#endif
1228 goto check_end;
1229 }
1230 else { /* less expensive than calling strncmp() */
1231 register unsigned char *olds = s;
1232
1233 tmp = littlelen;
1234
1235 while (tmp--) {
1236 if (*--s == *--little)
1237 continue;
cf93c79d
IZ		 1238 s = olds + 1; /* here we pay the price for failure */
1239 little = oldlittle;
1240 if (s < bigend) /* fake up continue to outer loop */
1241 goto top2;
1242 goto check_end;
1243 }
1244 return (char *)s;
a687059c 1245 }
378cc40b 1246 }
cf93c79d
IZ		 1247 check_end:
1248 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1249 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1250 return (char*)bigend - littlelen;
1251 return Nullch;
378cc40b 1252 }
378cc40b
LW		 1253}
1254
c277df42
IZ		 1255/* start_shift, end_shift are positive quantities which give offsets
1256 of ends of some substring of bigstr.
1257 If `last' we want the last occurence.
1258 old_posp is the way of communication between consequent calls if
1259 the next call needs to find the .
1260 The initial *old_posp should be -1.
cf93c79d
IZ		 1261
1262 Note that we take into account SvTAIL, so one can get extra
1263 optimizations if _ALL flag is set.
c277df42
IZ		 1264 */
1265
cf93c79d
IZ		 1266/* If SvTAIL is actually due to \Z or \z, this gives false positives
1267 if PL_multiline. In fact if !PL_multiline the autoritative answer
1268 is not supported yet. */
1269
378cc40b 1270char *
864dbfa3 1271Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1272{
a687059c
LW		 1273 register unsigned char *s, *x;
1274 register unsigned char *big;
79072805
LW		 1275 register I32 pos;
1276 register I32 previous;
1277 register I32 first;
a687059c 1278 register unsigned char *little;
c277df42 1279 register I32 stop_pos;
a687059c 1280 register unsigned char *littleend;
c277df42 1281 I32 found = 0;
378cc40b 1282
c277df42 1283 if (*old_posp == -1
3280af22 1284 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1285 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1286 cant_find:
1287 if ( BmRARE(littlestr) == '\n'
1288 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1289 little = (unsigned char *)(SvPVX(littlestr));
1290 littleend = little + SvCUR(littlestr);
1291 first = *little++;
1292 goto check_tail;
1293 }
378cc40b 1294 return Nullch;
cf93c79d
IZ		 1295 }
1296
463ee0b2 1297 little = (unsigned char *)(SvPVX(littlestr));
79072805 1298 littleend = little + SvCUR(littlestr);
378cc40b 1299 first = *little++;
c277df42 1300 /* The value of pos we can start at: */
79072805 1301 previous = BmPREVIOUS(littlestr);
463ee0b2 1302 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1303 /* The value of pos we can stop at: */
1304 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1305 if (previous + start_shift > stop_pos) {
1306 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1307 goto check_tail;
1308 return Nullch;
1309 }
c277df42 1310 while (pos < previous + start_shift) {
3280af22 1311 if (!(pos += PL_screamnext[pos]))
cf93c79d 1312 goto cant_find;
378cc40b 1313 }
de3bb511 1314#ifdef POINTERRIGOR
bbce6d69 1315 do {
ef64f398 1316 if (pos >= stop_pos) break;
bbce6d69 1317 if (big[pos-previous] != first)
1318 continue;
1319 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1320 if (*s++ != *x++) {
1321 s--;
1322 break;
de3bb511 1323 }
bbce6d69 1324 }
c277df42
IZ		 1325 if (s == littleend) {
1326 *old_posp = pos;
1327 if (!last) return (char *)(big+pos-previous);
1328 found = 1;
1329 }
6b88bc9c 1330 } while ( pos += PL_screamnext[pos] );
c277df42 1331 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1332#else /* !POINTERRIGOR */
1333 big -= previous;
bbce6d69 1334 do {
ef64f398 1335 if (pos >= stop_pos) break;
bbce6d69 1336 if (big[pos] != first)
1337 continue;
1338 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1339 if (*s++ != *x++) {
1340 s--;
1341 break;
378cc40b 1342 }
bbce6d69 1343 }
c277df42
IZ		 1344 if (s == littleend) {
1345 *old_posp = pos;
1346 if (!last) return (char *)(big+pos);
1347 found = 1;
1348 }
3280af22 1349 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1350 if (last && found)
1351 return (char *)(big+(*old_posp));
de3bb511 1352#endif /* POINTERRIGOR */
cf93c79d
IZ		 1353 check_tail:
1354 if (!SvTAIL(littlestr) || (end_shift > 0))
1355 return Nullch;
1356 /* Ignore the trailing "\n". This code is not microoptimized */
1357 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1358 stop_pos = littleend - little; /* Actual littlestr len */
1359 if (stop_pos == 0)
1360 return (char*)big;
1361 big -= stop_pos;
1362 if (*big == first
1363 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1364 return (char*)big;
1365 return Nullch;
8d063cd8
LW		 1366}
1367
79072805 1368I32
864dbfa3 1369Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1370{
bbce6d69 1371 register U8 *a = (U8 *)s1;
1372 register U8 *b = (U8 *)s2;
79072805 1373 while (len--) {
22c35a8c 1374 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1375 return 1;
1376 a++,b++;
1377 }
1378 return 0;
1379}
1380
1381I32
864dbfa3 1382Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1383{
1384 register U8 *a = (U8 *)s1;
1385 register U8 *b = (U8 *)s2;
1386 while (len--) {
22c35a8c 1387 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1388 return 1;
1389 a++,b++;
79072805
LW		 1390 }
1391 return 0;
1392}
1393
8d063cd8
LW		 1394/* copy a string to a safe spot */
1395
954c1994
GS		 1396/*
1397=for apidoc savepv
1398
1399Copy a string to a safe spot. This does not use an SV.
1400
1401=cut
1402*/
1403
8d063cd8 1404char *
864dbfa3 1405Perl_savepv(pTHX_ const char *sv)
8d063cd8 1406{
a687059c 1407 register char *newaddr;
8d063cd8 1408
79072805
LW		 1409 New(902,newaddr,strlen(sv)+1,char);
1410 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1411 return newaddr;
1412}
1413
a687059c
LW		 1414/* same thing but with a known length */
1415
954c1994
GS		 1416/*
1417=for apidoc savepvn
1418
1419Copy a string to a safe spot. The C<len> indicates number of bytes to
1420copy. This does not use an SV.
1421
1422=cut
1423*/
1424
a687059c 1425char *
864dbfa3 1426Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1427{
1428 register char *newaddr;
1429
1430 New(903,newaddr,len+1,char);
79072805 1431 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1432 newaddr[len] = '\0'; /* is now */
1433 return newaddr;
1434}
1435
cea2e8a9 1436/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1437
76e3520e 1438STATIC SV *
cea2e8a9 1439S_mess_alloc(pTHX)
fc36a67e 1440{
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') {
57843af0 1526 if (CopLINE(PL_curcop))
ed094faf
GS		 1527 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1528 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1529 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1530 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1531 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1532 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1533 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1534 line_mode ? "line" : "chunk",
1535 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1536 }
9efbc0eb 1537#ifdef USE_THREADS
e8e6f333
GS		 1538 if (thr->tid)
1539 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1540#endif
515f54a1 1541 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1542 }
06bf62c7 1543 return sv;
a687059c
LW		 1544}
1545
c5be433b
GS		 1546OP *
1547Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1548{
36477c24 1549 char *message;
3280af22 1550 int was_in_eval = PL_in_eval;
36477c24 1551 HV *stash;
1552 GV *gv;
1553 CV *cv;
06bf62c7
GS		 1554 SV *msv;
1555 STRLEN msglen;
36477c24 1556
bf49b057 1557 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1558 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1559 thr, PL_curstack, PL_mainstack));
36477c24 1560
06bf62c7 1561 if (pat) {
5a844595
GS		 1562 msv = vmess(pat, args);
1563 if (PL_errors && SvCUR(PL_errors)) {
1564 sv_catsv(PL_errors, msv);
1565 message = SvPV(PL_errors, msglen);
1566 SvCUR_set(PL_errors, 0);
1567 }
1568 else
1569 message = SvPV(msv,msglen);
06bf62c7
GS		 1570 }
1571 else {
1572 message = Nullch;
0f79a09d 1573 msglen = 0;
06bf62c7 1574 }
36477c24 1575
bf49b057 1576 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1577 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1578 thr, message, PL_diehook));
3280af22 1579 if (PL_diehook) {
cea2e8a9 1580 /* sv_2cv might call Perl_croak() */
3280af22 1581 SV *olddiehook = PL_diehook;
1738f5c4 1582 ENTER;
3280af22
NIS		 1583 SAVESPTR(PL_diehook);
1584 PL_diehook = Nullsv;
1738f5c4
CS		 1585 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1586 LEAVE;
1587 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1588 dSP;
774d564b 1589 SV *msg;
1590
1591 ENTER;
3a1f2dc9 1592 save_re_context();
79cb57f6 1593 if (message) {
06bf62c7 1594 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1595 SvREADONLY_on(msg);
1596 SAVEFREESV(msg);
1597 }
1598 else {
1599 msg = ERRSV;
1600 }
1738f5c4 1601
e788e7d3 1602 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1603 PUSHMARK(SP);
1738f5c4
CS		 1604 XPUSHs(msg);
1605 PUTBACK;
0cdb2077 1606 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1607 POPSTACK;
774d564b 1608 LEAVE;
1738f5c4 1609 }
36477c24 1610 }
1611
06bf62c7 1612 PL_restartop = die_where(message, msglen);
bf49b057 1613 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1614 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1615 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1616 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1617 JMPENV_JUMP(3);
3280af22 1618 return PL_restartop;
36477c24 1619}
1620
c5be433b 1621#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1622OP *
1623Perl_die_nocontext(const char* pat, ...)
a687059c 1624{
cea2e8a9
GS		 1625 dTHX;
1626 OP *o;
a687059c 1627 va_list args;
cea2e8a9 1628 va_start(args, pat);
c5be433b 1629 o = vdie(pat, &args);
cea2e8a9
GS		 1630 va_end(args);
1631 return o;
1632}
c5be433b 1633#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1634
1635OP *
1636Perl_die(pTHX_ const char* pat, ...)
1637{
1638 OP *o;
1639 va_list args;
1640 va_start(args, pat);
c5be433b 1641 o = vdie(pat, &args);
cea2e8a9
GS		 1642 va_end(args);
1643 return o;
1644}
1645
c5be433b
GS		 1646void
1647Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9 1648{
de3bb511 1649 char *message;
748a9306
LW		 1650 HV *stash;
1651 GV *gv;
1652 CV *cv;
06bf62c7
GS		 1653 SV *msv;
1654 STRLEN msglen;
a687059c 1655
9983fa3c
GS		 1656 if (pat) {
1657 msv = vmess(pat, args);
1658 if (PL_errors && SvCUR(PL_errors)) {
1659 sv_catsv(PL_errors, msv);
1660 message = SvPV(PL_errors, msglen);
1661 SvCUR_set(PL_errors, 0);
1662 }
1663 else
1664 message = SvPV(msv,msglen);
1665 }
1666 else {
1667 message = Nullch;
1668 msglen = 0;
5a844595 1669 }
5a844595 1670
b900a521
JH		 1671 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1672 PTR2UV(thr), message));
5a844595 1673
3280af22 1674 if (PL_diehook) {
cea2e8a9 1675 /* sv_2cv might call Perl_croak() */
3280af22 1676 SV *olddiehook = PL_diehook;
1738f5c4 1677 ENTER;
3280af22
NIS		 1678 SAVESPTR(PL_diehook);
1679 PL_diehook = Nullsv;
20cec16a 1680 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1681 LEAVE;
1682 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1683 dSP;
774d564b 1684 SV *msg;
1685
1686 ENTER;
3a1f2dc9 1687 save_re_context();
9983fa3c
GS		 1688 if (message) {
1689 msg = newSVpvn(message, msglen);
1690 SvREADONLY_on(msg);
1691 SAVEFREESV(msg);
1692 }
1693 else {
1694 msg = ERRSV;
1695 }
20cec16a 1696
e788e7d3 1697 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1698 PUSHMARK(SP);
1738f5c4 1699 XPUSHs(msg);
20cec16a 1700 PUTBACK;
864dbfa3 1701 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1702 POPSTACK;
774d564b 1703 LEAVE;
20cec16a 1704 }
748a9306 1705 }
3280af22 1706 if (PL_in_eval) {
06bf62c7 1707 PL_restartop = die_where(message, msglen);
6224f72b 1708 JMPENV_JUMP(3);
a0d0e21e 1709 }
d175a3f0
GS		 1710 {
1711#ifdef USE_SFIO
1712 /* SFIO can really mess with your errno */
1713 int e = errno;
1714#endif
bf49b057
GS		 1715 PerlIO *serr = Perl_error_log;
1716
1717 PerlIO_write(serr, message, msglen);
1718 (void)PerlIO_flush(serr);
d175a3f0
GS		 1719#ifdef USE_SFIO
1720 errno = e;
1721#endif
1722 }
f86702cc 1723 my_failure_exit();
a687059c
LW		 1724}
1725
c5be433b 1726#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1727void
cea2e8a9 1728Perl_croak_nocontext(const char *pat, ...)
a687059c 1729{
cea2e8a9 1730 dTHX;
a687059c 1731 va_list args;
cea2e8a9 1732 va_start(args, pat);
c5be433b 1733 vcroak(pat, &args);
cea2e8a9
GS		 1734 /* NOTREACHED */
1735 va_end(args);
1736}
1737#endif /* PERL_IMPLICIT_CONTEXT */
1738
954c1994
GS		 1739/*
1740=for apidoc croak
1741
9983fa3c
GS		 1742This is the XSUB-writer's interface to Perl's C<die> function.
1743Normally use this function the same way you use the C C<printf>
1744function. See C<warn>.
1745
1746If you want to throw an exception object, assign the object to
1747C<$@> and then pass C<Nullch> to croak():
1748
1749 errsv = get_sv("@", TRUE);
1750 sv_setsv(errsv, exception_object);
1751 croak(Nullch);
954c1994
GS		 1752
1753=cut
1754*/
1755
cea2e8a9
GS		 1756void
1757Perl_croak(pTHX_ const char *pat, ...)
1758{
1759 va_list args;
1760 va_start(args, pat);
c5be433b 1761 vcroak(pat, &args);
cea2e8a9
GS		 1762 /* NOTREACHED */
1763 va_end(args);
1764}
1765
c5be433b
GS		 1766void
1767Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1768{
de3bb511 1769 char *message;
748a9306
LW		 1770 HV *stash;
1771 GV *gv;
1772 CV *cv;
06bf62c7
GS		 1773 SV *msv;
1774 STRLEN msglen;
a687059c 1775
5a844595 1776 msv = vmess(pat, args);
06bf62c7 1777 message = SvPV(msv, msglen);
a687059c 1778
3280af22 1779 if (PL_warnhook) {
cea2e8a9 1780 /* sv_2cv might call Perl_warn() */
3280af22 1781 SV *oldwarnhook = PL_warnhook;
1738f5c4 1782 ENTER;
3280af22
NIS		 1783 SAVESPTR(PL_warnhook);
1784 PL_warnhook = Nullsv;
20cec16a 1785 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1786 LEAVE;
1787 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1788 dSP;
774d564b 1789 SV *msg;
1790
1791 ENTER;
3a1f2dc9 1792 save_re_context();
06bf62c7 1793 msg = newSVpvn(message, msglen);
774d564b 1794 SvREADONLY_on(msg);
1795 SAVEFREESV(msg);
1796
e788e7d3 1797 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1798 PUSHMARK(SP);
774d564b 1799 XPUSHs(msg);
20cec16a 1800 PUTBACK;
864dbfa3 1801 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1802 POPSTACK;
774d564b 1803 LEAVE;
20cec16a 1804 return;
1805 }
748a9306 1806 }
bf49b057
GS		 1807 {
1808 PerlIO *serr = Perl_error_log;
1809
1810 PerlIO_write(serr, message, msglen);
a687059c 1811#ifdef LEAKTEST
bf49b057
GS		 1812 DEBUG_L(*message == '!'
1813 ? (xstat(message[1]=='!'
1814 ? (message[2]=='!' ? 2 : 1)
1815 : 0)
1816 , 0)
1817 : 0);
a687059c 1818#endif
bf49b057
GS		 1819 (void)PerlIO_flush(serr);
1820 }
a687059c 1821}
8d063cd8 1822
c5be433b 1823#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1824void
1825Perl_warn_nocontext(const char *pat, ...)
1826{
1827 dTHX;
1828 va_list args;
1829 va_start(args, pat);
c5be433b 1830 vwarn(pat, &args);
cea2e8a9
GS		 1831 va_end(args);
1832}
1833#endif /* PERL_IMPLICIT_CONTEXT */
1834
954c1994
GS		 1835/*
1836=for apidoc warn
1837
1838This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1839function the same way you use the C C<printf> function. See
1840C<croak>.
1841
1842=cut
1843*/
1844
cea2e8a9
GS		 1845void
1846Perl_warn(pTHX_ const char *pat, ...)
1847{
1848 va_list args;
1849 va_start(args, pat);
c5be433b 1850 vwarn(pat, &args);
cea2e8a9
GS		 1851 va_end(args);
1852}
1853
c5be433b
GS		 1854#if defined(PERL_IMPLICIT_CONTEXT)
1855void
1856Perl_warner_nocontext(U32 err, const char *pat, ...)
1857{
1858 dTHX;
1859 va_list args;
1860 va_start(args, pat);
1861 vwarner(err, pat, &args);
1862 va_end(args);
1863}
1864#endif /* PERL_IMPLICIT_CONTEXT */
1865
599cee73 1866void
864dbfa3 1867Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1868{
1869 va_list args;
c5be433b
GS		 1870 va_start(args, pat);
1871 vwarner(err, pat, &args);
1872 va_end(args);
1873}
1874
1875void
1876Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1877{
599cee73
PM		 1878 char *message;
1879 HV *stash;
1880 GV *gv;
1881 CV *cv;
06bf62c7
GS		 1882 SV *msv;
1883 STRLEN msglen;
599cee73 1884
5a844595 1885 msv = vmess(pat, args);
06bf62c7 1886 message = SvPV(msv, msglen);
599cee73
PM		 1887
1888 if (ckDEAD(err)) {
1889#ifdef USE_THREADS
b900a521 1890 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1891#endif /* USE_THREADS */
1892 if (PL_diehook) {
cea2e8a9 1893 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1894 SV *olddiehook = PL_diehook;
1895 ENTER;
1896 SAVESPTR(PL_diehook);
1897 PL_diehook = Nullsv;
1898 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1899 LEAVE;
1900 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1901 dSP;
1902 SV *msg;
1903
1904 ENTER;
3a1f2dc9 1905 save_re_context();
06bf62c7 1906 msg = newSVpvn(message, msglen);
599cee73
PM		 1907 SvREADONLY_on(msg);
1908 SAVEFREESV(msg);
1909
3a1f2dc9 1910 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1911 PUSHMARK(sp);
1912 XPUSHs(msg);
1913 PUTBACK;
864dbfa3 1914 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1915 POPSTACK;
599cee73
PM		 1916 LEAVE;
1917 }
1918 }
1919 if (PL_in_eval) {
06bf62c7 1920 PL_restartop = die_where(message, msglen);
599cee73
PM		 1921 JMPENV_JUMP(3);
1922 }
bf49b057
GS		 1923 {
1924 PerlIO *serr = Perl_error_log;
1925 PerlIO_write(serr, message, msglen);
1926 (void)PerlIO_flush(serr);
1927 }
599cee73
PM		 1928 my_failure_exit();
1929
1930 }
1931 else {
1932 if (PL_warnhook) {
cea2e8a9 1933 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1934 SV *oldwarnhook = PL_warnhook;
1935 ENTER;
1936 SAVESPTR(PL_warnhook);
1937 PL_warnhook = Nullsv;
1938 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1939 LEAVE;
599cee73
PM		 1940 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1941 dSP;
1942 SV *msg;
1943
1944 ENTER;
3a1f2dc9 1945 save_re_context();
06bf62c7 1946 msg = newSVpvn(message, msglen);
599cee73
PM		 1947 SvREADONLY_on(msg);
1948 SAVEFREESV(msg);
1949
3a1f2dc9 1950 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1951 PUSHMARK(sp);
1952 XPUSHs(msg);
1953 PUTBACK;
864dbfa3 1954 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1955 POPSTACK;
599cee73
PM		 1956 LEAVE;
1957 return;
1958 }
1959 }
bf49b057
GS		 1960 {
1961 PerlIO *serr = Perl_error_log;
1962 PerlIO_write(serr, message, msglen);
599cee73 1963#ifdef LEAKTEST
3a6f1039
GS		 1964 DEBUG_L(*message == '!'
1965 ? (xstat(message[1]=='!'
1966 ? (message[2]=='!' ? 2 : 1)
1967 : 0)
1968 , 0)
1969 : 0);
599cee73 1970#endif
bf49b057
GS		 1971 (void)PerlIO_flush(serr);
1972 }
599cee73
PM		 1973 }
1974}
1975
72d299db
GS		 1976#ifdef USE_ENVIRON_ARRAY
1977 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
bd3a7847 1978#if !defined(WIN32)
8d063cd8 1979void
864dbfa3 1980Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1981{
f2517201
GS		 1982#ifndef PERL_USE_SAFE_PUTENV
1983 /* most putenv()s leak, so we manipulate environ directly */
79072805 1984 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1985
3280af22 1986 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1987 I32 j;
1988 I32 max;
fe14fcc3
LW		 1989 char **tmpenv;
1990
de3bb511 1991 /*SUPPRESS 530*/
fe14fcc3 1992 for (max = i; environ[max]; max++) ;
f2517201
GS		 1993 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1994 for (j=0; j<max; j++) { /* copy environment */
1995 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1996 strcpy(tmpenv[j], environ[j]);
1997 }
fe14fcc3
LW		 1998 tmpenv[max] = Nullch;
1999 environ = tmpenv; /* tell exec where it is now */
2000 }
a687059c 2001 if (!val) {
f2517201 2002 safesysfree(environ[i]);
a687059c
LW		 2003 while (environ[i]) {
2004 environ[i] = environ[i+1];
2005 i++;
2006 }
2007 return;
2008 }
8d063cd8 2009 if (!environ[i]) { /* does not exist yet */
f2517201 2010 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 2011 environ[i+1] = Nullch; /* make sure it's null terminated */
2012 }
fe14fcc3 2013 else
f2517201
GS		 2014 safesysfree(environ[i]);
2015 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
2016
a687059c 2017 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 2018
2019#else /* PERL_USE_SAFE_PUTENV */
bd3a7847
GS		 2020# if defined(__CYGWIN__)
2021 setenv(nam, val, 1);
2022# else
f2517201
GS		 2023 char *new_env;
2024
2025 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 2026 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201 2027 (void)putenv(new_env);
bd3a7847 2028# endif /* __CYGWIN__ */
f2517201 2029#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 2030}
2031
bd3a7847 2032#else /* WIN32 */
68dc0745 2033
2034void
864dbfa3 2035Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2036{
ac5c734f
GS		 2037 register char *envstr;
2038 STRLEN len = strlen(nam) + 3;
2039 if (!val) {
2040 val = "";
2041 }
2042 len += strlen(val);
2043 New(904, envstr, len, char);
2044 (void)sprintf(envstr,"%s=%s",nam,val);
2045 (void)PerlEnv_putenv(envstr);
2046 Safefree(envstr);
3e3baf6d
TB		 2047}
2048
2049#endif /* WIN32 */
2050
2051I32
864dbfa3 2052Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2053{
2054 register I32 i, len = strlen(nam);
2055
2056 for (i = 0; environ[i]; i++) {
2057 if (
2058#ifdef WIN32
2059 strnicmp(environ[i],nam,len) == 0
2060#else
2061 strnEQ(environ[i],nam,len)
2062#endif
2063 && environ[i][len] == '=')
2064 break; /* strnEQ must come first to avoid */
2065 } /* potential SEGV's */
2066 return i;
68dc0745 2067}
2068
72d299db 2069#endif /* !VMS && !EPOC*/
378cc40b 2070
16d20bd9 2071#ifdef UNLINK_ALL_VERSIONS
79072805 2072I32
864dbfa3 2073Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2074{
79072805 2075 I32 i;
378cc40b 2076
6ad3d225 2077 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2078 return i ? 0 : -1;
2079}
2080#endif
2081
7a3f2258 2082/* this is a drop-in replacement for bcopy() */
85e6fe83 2083#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2084char *
7a3f2258 2085Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2086{
2087 char *retval = to;
2088
7c0587c8
LW		 2089 if (from - to >= 0) {
2090 while (len--)
2091 *to++ = *from++;
2092 }
2093 else {
2094 to += len;
2095 from += len;
2096 while (len--)
faf8582f 2097 *(--to) = *(--from);
7c0587c8 2098 }
378cc40b
LW		 2099 return retval;
2100}
ffed7fef 2101#endif
378cc40b 2102
7a3f2258 2103/* this is a drop-in replacement for memset() */
fc36a67e 2104#ifndef HAS_MEMSET
2105void *
7a3f2258 2106Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2107{
2108 char *retval = loc;
2109
2110 while (len--)
2111 *loc++ = ch;
2112 return retval;
2113}
2114#endif
2115
7a3f2258 2116/* this is a drop-in replacement for bzero() */
7c0587c8 2117#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2118char *
7a3f2258 2119Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2120{
2121 char *retval = loc;
2122
2123 while (len--)
2124 *loc++ = 0;
2125 return retval;
2126}
2127#endif
7c0587c8 2128
7a3f2258 2129/* this is a drop-in replacement for memcmp() */
36477c24 2130#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2131I32
7a3f2258 2132Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2133{
36477c24 2134 register U8 *a = (U8 *)s1;
2135 register U8 *b = (U8 *)s2;
79072805 2136 register I32 tmp;
7c0587c8
LW		 2137
2138 while (len--) {
36477c24 2139 if (tmp = *a++ - *b++)
7c0587c8
LW		 2140 return tmp;
2141 }
2142 return 0;
2143}
36477c24 2144#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2145
fe14fcc3 2146#ifndef HAS_VPRINTF
a687059c 2147
85e6fe83 2148#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2149char *
2150#else
2151int
2152#endif
08105a92 2153vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2154{
2155 FILE fakebuf;
2156
2157 fakebuf._ptr = dest;
2158 fakebuf._cnt = 32767;
35c8bce7
LW		 2159#ifndef _IOSTRG
2160#define _IOSTRG 0
2161#endif
a687059c
LW		 2162 fakebuf._flag = _IOWRT|_IOSTRG;
2163 _doprnt(pat, args, &fakebuf); /* what a kludge */
2164 (void)putc('\0', &fakebuf);
85e6fe83 2165#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2166 return(dest);
2167#else
2168 return 0; /* perl doesn't use return value */
2169#endif
2170}
2171
fe14fcc3 2172#endif /* HAS_VPRINTF */
a687059c
LW		 2173
2174#ifdef MYSWAP
ffed7fef 2175#if BYTEORDER != 0x4321
a687059c 2176short
864dbfa3 2177Perl_my_swap(pTHX_ short s)
a687059c
LW		 2178{
2179#if (BYTEORDER & 1) == 0
2180 short result;
2181
2182 result = ((s & 255) << 8) + ((s >> 8) & 255);
2183 return result;
2184#else
2185 return s;
2186#endif
2187}
2188
2189long
864dbfa3 2190Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2191{
2192 union {
2193 long result;
ffed7fef 2194 char c[sizeof(long)];
a687059c
LW		 2195 } u;
2196
ffed7fef 2197#if BYTEORDER == 0x1234
a687059c
LW		 2198 u.c[0] = (l >> 24) & 255;
2199 u.c[1] = (l >> 16) & 255;
2200 u.c[2] = (l >> 8) & 255;
2201 u.c[3] = l & 255;
2202 return u.result;
2203#else
ffed7fef 2204#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2205 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2206#else
79072805
LW		 2207 register I32 o;
2208 register I32 s;
a687059c 2209
ffed7fef
LW		 2210 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2211 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2212 }
2213 return u.result;
2214#endif
2215#endif
2216}
2217
2218long
864dbfa3 2219Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2220{
2221 union {
2222 long l;
ffed7fef 2223 char c[sizeof(long)];
a687059c
LW		 2224 } u;
2225
ffed7fef 2226#if BYTEORDER == 0x1234
a687059c
LW		 2227 u.c[0] = (l >> 24) & 255;
2228 u.c[1] = (l >> 16) & 255;
2229 u.c[2] = (l >> 8) & 255;
2230 u.c[3] = l & 255;
2231 return u.l;
2232#else
ffed7fef 2233#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2234 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2235#else
79072805
LW		 2236 register I32 o;
2237 register I32 s;
a687059c
LW		 2238
2239 u.l = l;
2240 l = 0;
ffed7fef
LW		 2241 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2242 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2243 }
2244 return l;
2245#endif
2246#endif
2247}
2248
ffed7fef 2249#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2250#endif /* MYSWAP */
2251
2252/*
2253 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2254 * If these functions are defined,
2255 * the BYTEORDER is neither 0x1234 nor 0x4321.
2256 * However, this is not assumed.
2257 * -DWS
2258 */
2259
2260#define HTOV(name,type) \
2261 type \
ba106d47 2262 name (register type n) \
988174c1
LW		 2263 { \
2264 union { \
2265 type value; \
2266 char c[sizeof(type)]; \
2267 } u; \
79072805
LW		 2268 register I32 i; \
2269 register I32 s; \
988174c1
LW		 2270 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2271 u.c[i] = (n >> s) & 0xFF; \
2272 } \
2273 return u.value; \
2274 }
2275
2276#define VTOH(name,type) \
2277 type \
ba106d47 2278 name (register type n) \
988174c1
LW		 2279 { \
2280 union { \
2281 type value; \
2282 char c[sizeof(type)]; \
2283 } u; \
79072805
LW		 2284 register I32 i; \
2285 register I32 s; \
988174c1
LW		 2286 u.value = n; \
2287 n = 0; \
2288 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2289 n += (u.c[i] & 0xFF) << s; \
2290 } \
2291 return n; \
2292 }
2293
2294#if defined(HAS_HTOVS) && !defined(htovs)
2295HTOV(htovs,short)
2296#endif
2297#if defined(HAS_HTOVL) && !defined(htovl)
2298HTOV(htovl,long)
2299#endif
2300#if defined(HAS_VTOHS) && !defined(vtohs)
2301VTOH(vtohs,short)
2302#endif
2303#if defined(HAS_VTOHL) && !defined(vtohl)
2304VTOH(vtohl,long)
2305#endif
a687059c 2306
5f05dabc 2307 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2308#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2309PerlIO *
864dbfa3 2310Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2311{
2312 int p[2];
8ac85365 2313 register I32 This, that;
d8a83dd3 2314 register Pid_t pid;
79072805 2315 SV *sv;
1738f5c4 2316 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2317 I32 did_pipes = 0;
2318 int pp[2];
a687059c 2319
45bc9206 2320 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2321#ifdef OS2
2322 if (doexec) {
23da6c43 2323 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2324 }
2325#endif
8ac85365
NIS		 2326 This = (*mode == 'w');
2327 that = !This;
3280af22 2328 if (doexec && PL_tainting) {
bbce6d69 2329 taint_env();
2330 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2331 }
c2267164
IZ		 2332 if (PerlProc_pipe(p) < 0)
2333 return Nullfp;
e446cec8
IZ		 2334 if (doexec && PerlProc_pipe(pp) >= 0)
2335 did_pipes = 1;
a687059c
LW		 2336 while ((pid = (doexec?vfork():fork())) < 0) {
2337 if (errno != EAGAIN) {
6ad3d225 2338 PerlLIO_close(p[This]);
e446cec8
IZ		 2339 if (did_pipes) {
2340 PerlLIO_close(pp[0]);
2341 PerlLIO_close(pp[1]);
2342 }
a687059c 2343 if (!doexec)
cea2e8a9 2344 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2345 return Nullfp;
2346 }
2347 sleep(5);
2348 }
2349 if (pid == 0) {
79072805
LW		 2350 GV* tmpgv;
2351
30ac6d9b
GS		 2352#undef THIS
2353#undef THAT
a687059c 2354#define THIS that
8ac85365 2355#define THAT This
6ad3d225 2356 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2357 if (did_pipes) {
2358 PerlLIO_close(pp[0]);
2359#if defined(HAS_FCNTL) && defined(F_SETFD)
2360 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2361#endif
2362 }
a687059c 2363 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2364 PerlLIO_dup2(p[THIS], *mode == 'r');
2365 PerlLIO_close(p[THIS]);
a687059c 2366 }
4435c477 2367#ifndef OS2
a687059c 2368 if (doexec) {
a0d0e21e 2369#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2370 int fd;
2371
2372#ifndef NOFILE
2373#define NOFILE 20
2374#endif
6b88bc9c 2375 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2376 if (fd != pp[1])
2377 PerlLIO_close(fd);
ae986130 2378#endif
e446cec8 2379 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2380 PerlProc__exit(1);
a687059c 2381 }
4435c477 2382#endif /* defined OS2 */
de3bb511 2383 /*SUPPRESS 560*/
155aba94 2384 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2385 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2386 PL_forkprocess = 0;
2387 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2388 return Nullfp;
2389#undef THIS
2390#undef THAT
2391 }
62b28dd9 2392 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2393 PerlLIO_close(p[that]);
e446cec8
IZ		 2394 if (did_pipes)
2395 PerlLIO_close(pp[1]);
8ac85365 2396 if (p[that] < p[This]) {
6ad3d225
GS		 2397 PerlLIO_dup2(p[This], p[that]);
2398 PerlLIO_close(p[This]);
8ac85365 2399 p[This] = p[that];
62b28dd9 2400 }
1cb75286 2401 LOCK_FDPID_MUTEX;
3280af22 2402 sv = *av_fetch(PL_fdpid,p[This],TRUE);
1cb75286 2403 UNLOCK_FDPID_MUTEX;
a0d0e21e 2404 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2405 SvIVX(sv) = pid;
3280af22 2406 PL_forkprocess = pid;
e446cec8
IZ		 2407 if (did_pipes && pid > 0) {
2408 int errkid;
2409 int n = 0, n1;
2410
2411 while (n < sizeof(int)) {
2412 n1 = PerlLIO_read(pp[0],
2413 (void*)(((char*)&errkid)+n),
2414 (sizeof(int)) - n);
2415 if (n1 <= 0)
2416 break;
2417 n += n1;
2418 }
2f96c702
IZ		 2419 PerlLIO_close(pp[0]);
2420 did_pipes = 0;
e446cec8
IZ		 2421 if (n) { /* Error */
2422 if (n != sizeof(int))
cea2e8a9 2423 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2424 errno = errkid; /* Propagate errno from kid */
2425 return Nullfp;
2426 }
2427 }
2428 if (did_pipes)
2429 PerlLIO_close(pp[0]);
8ac85365 2430 return PerlIO_fdopen(p[This], mode);
a687059c 2431}
7c0587c8 2432#else
55497cff 2433#if defined(atarist) || defined(DJGPP)
7c0587c8 2434FILE *popen();
760ac839 2435PerlIO *
864dbfa3 2436Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2437{
760ac839 2438 /* Needs work for PerlIO ! */
55497cff 2439 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2440 PERL_FLUSHALL_FOR_CHILD;
55497cff 2441 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2442}
2443#endif
2444
2445#endif /* !DOSISH */
a687059c 2446
748a9306 2447#ifdef DUMP_FDS
35ff7856 2448void
864dbfa3 2449Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2450{
2451 int fd;
2452 struct stat tmpstatbuf;
2453
bf49b057 2454 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2455 for (fd = 0; fd < 32; fd++) {
6ad3d225 2456 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2457 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2458 }
bf49b057 2459 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2460}
35ff7856 2461#endif /* DUMP_FDS */
ae986130 2462
fe14fcc3 2463#ifndef HAS_DUP2
fec02dd3 2464int
ba106d47 2465dup2(int oldfd, int newfd)
a687059c 2466{
a0d0e21e 2467#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2468 if (oldfd == newfd)
2469 return oldfd;
6ad3d225 2470 PerlLIO_close(newfd);
fec02dd3 2471 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2472#else
fc36a67e 2473#define DUP2_MAX_FDS 256
2474 int fdtmp[DUP2_MAX_FDS];
79072805 2475 I32 fdx = 0;
ae986130
LW		 2476 int fd;
2477
fe14fcc3 2478 if (oldfd == newfd)
fec02dd3 2479 return oldfd;
6ad3d225 2480 PerlLIO_close(newfd);
fc36a67e 2481 /* good enough for low fd's... */
6ad3d225 2482 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2483 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2484 PerlLIO_close(fd);
fc36a67e 2485 fd = -1;
2486 break;
2487 }
ae986130 2488 fdtmp[fdx++] = fd;
fc36a67e 2489 }
ae986130 2490 while (fdx > 0)
6ad3d225 2491 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2492 return fd;
62b28dd9 2493#endif
a687059c
LW		 2494}
2495#endif
2496
ff68c719 2497
2498#ifdef HAS_SIGACTION
2499
2500Sighandler_t
864dbfa3 2501Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2502{
2503 struct sigaction act, oact;
2504
2505 act.sa_handler = handler;
2506 sigemptyset(&act.sa_mask);
2507 act.sa_flags = 0;
2508#ifdef SA_RESTART
2509 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2510#endif
85264bed
CS		 2511#ifdef SA_NOCLDWAIT
2512 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2513 act.sa_flags |= SA_NOCLDWAIT;
2514#endif
ff68c719 2515 if (sigaction(signo, &act, &oact) == -1)
36477c24 2516 return SIG_ERR;
ff68c719 2517 else
36477c24 2518 return oact.sa_handler;
ff68c719 2519}
2520
2521Sighandler_t
864dbfa3 2522Perl_rsignal_state(pTHX_ int signo)
ff68c719 2523{
2524 struct sigaction oact;
2525
2526 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2527 return SIG_ERR;
2528 else
2529 return oact.sa_handler;
2530}
2531
2532int
864dbfa3 2533Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2534{
2535 struct sigaction act;
2536
2537 act.sa_handler = handler;
2538 sigemptyset(&act.sa_mask);
2539 act.sa_flags = 0;
2540#ifdef SA_RESTART
2541 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2542#endif
85264bed
CS		 2543#ifdef SA_NOCLDWAIT
2544 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2545 act.sa_flags |= SA_NOCLDWAIT;
2546#endif
ff68c719 2547 return sigaction(signo, &act, save);
2548}
2549
2550int
864dbfa3 2551Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2552{
2553 return sigaction(signo, save, (struct sigaction *)NULL);
2554}
2555
2556#else /* !HAS_SIGACTION */
2557
2558Sighandler_t
864dbfa3 2559Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2560{
6ad3d225 2561 return PerlProc_signal(signo, handler);
ff68c719 2562}
2563
2564static int sig_trapped;
2565
2566static
2567Signal_t
4e35701f 2568sig_trap(int signo)
ff68c719 2569{
2570 sig_trapped++;
2571}
2572
2573Sighandler_t
864dbfa3 2574Perl_rsignal_state(pTHX_ int signo)
ff68c719 2575{
2576 Sighandler_t oldsig;
2577
2578 sig_trapped = 0;
6ad3d225
GS		 2579 oldsig = PerlProc_signal(signo, sig_trap);
2580 PerlProc_signal(signo, oldsig);
ff68c719 2581 if (sig_trapped)
7766f137 2582 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2583 return oldsig;
2584}
2585
2586int
864dbfa3 2587Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2588{
6ad3d225 2589 *save = PerlProc_signal(signo, handler);
ff68c719 2590 return (*save == SIG_ERR) ? -1 : 0;
2591}
2592
2593int
864dbfa3 2594Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2595{
6ad3d225 2596 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2597}
2598
2599#endif /* !HAS_SIGACTION */
2600
5f05dabc 2601 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2602#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2603I32
864dbfa3 2604Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2605{
ff68c719 2606 Sigsave_t hstat, istat, qstat;
a687059c 2607 int status;
a0d0e21e 2608 SV **svp;
d8a83dd3
JH		 2609 Pid_t pid;
2610 Pid_t pid2;
03136e13
CS		 2611 bool close_failed;
2612 int saved_errno;
2613#ifdef VMS
2614 int saved_vaxc_errno;
2615#endif
22fae026
TM		 2616#ifdef WIN32
2617 int saved_win32_errno;
2618#endif
a687059c 2619
1cb75286 2620 LOCK_FDPID_MUTEX;
3280af22 2621 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
1cb75286 2622 UNLOCK_FDPID_MUTEX;
d8a83dd3 2623 pid = SvIVX(*svp);
a0d0e21e 2624 SvREFCNT_dec(*svp);
3280af22 2625 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2626#ifdef OS2
2627 if (pid == -1) { /* Opened by popen. */
2628 return my_syspclose(ptr);
2629 }
2630#endif
03136e13
CS		 2631 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2632 saved_errno = errno;
2633#ifdef VMS
2634 saved_vaxc_errno = vaxc$errno;
2635#endif
22fae026
TM		 2636#ifdef WIN32
2637 saved_win32_errno = GetLastError();
2638#endif
03136e13 2639 }
7c0587c8 2640#ifdef UTS
6ad3d225 2641 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2642#endif
ff68c719 2643 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2644 rsignal_save(SIGINT, SIG_IGN, &istat);
2645 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2646 do {
1d3434b8
GS		 2647 pid2 = wait4pid(pid, &status, 0);
2648 } while (pid2 == -1 && errno == EINTR);
ff68c719 2649 rsignal_restore(SIGHUP, &hstat);
2650 rsignal_restore(SIGINT, &istat);
2651 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2652 if (close_failed) {
2653 SETERRNO(saved_errno, saved_vaxc_errno);
2654 return -1;
2655 }
1d3434b8 2656 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2657}
4633a7c4
LW		 2658#endif /* !DOSISH */
2659
cd39f2b6 2660#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2661I32
d8a83dd3 2662Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2663{
79072805
LW		 2664 SV *sv;
2665 SV** svp;
fc36a67e 2666 char spid[TYPE_CHARS(int)];
20188a90
LW		 2667
2668 if (!pid)
2669 return -1;
5e1047cb 2670#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2671 if (pid > 0) {
7b0972df 2672 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2673 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2674 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2675 *statusp = SvIVX(*svp);
3280af22 2676 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2677 return pid;
2678 }
2679 }
2680 else {
79072805 2681 HE *entry;
20188a90 2682
3280af22 2683 hv_iterinit(PL_pidstatus);
155aba94 2684 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2685 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2686 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2687 *statusp = SvIVX(sv);
7b0972df 2688 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2689 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2690 return pid;
2691 }
2692 }
5e1047cb 2693#endif
79072805 2694#ifdef HAS_WAITPID
367f3c24
IZ		 2695# ifdef HAS_WAITPID_RUNTIME
2696 if (!HAS_WAITPID_RUNTIME)
2697 goto hard_way;
2698# endif
f55ee38a 2699 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2700#endif
2701#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2702 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2703#endif
2704#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2705 hard_way:
a0d0e21e
LW		 2706 {
2707 I32 result;
2708 if (flags)
cea2e8a9 2709 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2710 else {
76e3520e 2711 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2712 pidgone(result,*statusp);
2713 if (result < 0)
2714 *statusp = -1;
2715 }
2716 return result;
a687059c
LW		 2717 }
2718#endif
a687059c 2719}
2d7a9237 2720#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2721
7c0587c8 2722void
de3bb511 2723/*SUPPRESS 590*/
d8a83dd3 2724Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2725{
79072805 2726 register SV *sv;
fc36a67e 2727 char spid[TYPE_CHARS(int)];
a687059c 2728
7b0972df 2729 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2730 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2731 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2732 SvIVX(sv) = status;
20188a90 2733 return;
a687059c
LW		 2734}
2735
55497cff 2736#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2737int pclose();
ddcf38b7
IZ		 2738#ifdef HAS_FORK
2739int /* Cannot prototype with I32
2740 in os2ish.h. */
ba106d47 2741my_syspclose(PerlIO *ptr)
ddcf38b7 2742#else
79072805 2743I32
864dbfa3 2744Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2745#endif
a687059c 2746{
760ac839
LW		 2747 /* Needs work for PerlIO ! */
2748 FILE *f = PerlIO_findFILE(ptr);
2749 I32 result = pclose(f);
933fea7f
GS		 2750#if defined(DJGPP)
2751 result = (result << 8) & 0xff00;
2752#endif
760ac839
LW		 2753 PerlIO_releaseFILE(ptr,f);
2754 return result;
a687059c 2755}
7c0587c8 2756#endif
9f68db38
LW		 2757
2758void
864dbfa3 2759Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2760{
79072805 2761 register I32 todo;
08105a92 2762 register const char *frombase = from;
9f68db38
LW		 2763
2764 if (len == 1) {
08105a92 2765 register const char c = *from;
9f68db38 2766 while (count-- > 0)
5926133d 2767 *to++ = c;
9f68db38
LW		 2768 return;
2769 }
2770 while (count-- > 0) {
2771 for (todo = len; todo > 0; todo--) {
2772 *to++ = *from++;
2773 }
2774 from = frombase;
2775 }
2776}
0f85fab0 2777
463ee0b2 2778U32
65202027 2779Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2780{
2781 long along;
2782
27e2fb84 2783#if CASTFLAGS & 2
34de22dd
LW		 2784# define BIGDOUBLE 2147483648.0
2785 if (f >= BIGDOUBLE)
2786 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2787#endif
0f85fab0
LW		 2788 if (f >= 0.0)
2789 return (unsigned long)f;
2790 along = (long)f;
2791 return (unsigned long)along;
2792}
ed6116ce 2793# undef BIGDOUBLE
5d94fbed 2794
5d94fbed
AD		 2795/* Unfortunately, on some systems the cast_uv() function doesn't
2796 work with the system-supplied definition of ULONG_MAX. The
2797 comparison (f >= ULONG_MAX) always comes out true. It must be a
2798 problem with the compiler constant folding.
2799
2800 In any case, this workaround should be fine on any two's complement
2801 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2802 ccflags.
2803 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2804*/
1eb770ff 2805
2806/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2807 of LONG_(MIN/MAX).
2808 -- Kenneth Albanowski <kjahds@kjahds.com>
2809*/
2810
20cec16a 2811#ifndef MY_UV_MAX
2812# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2813#endif
2814
ed6116ce 2815I32
65202027 2816Perl_cast_i32(pTHX_ NV f)
ed6116ce 2817{
20cec16a 2818 if (f >= I32_MAX)
2819 return (I32) I32_MAX;
2820 if (f <= I32_MIN)
2821 return (I32) I32_MIN;
ed6116ce
LW		 2822 return (I32) f;
2823}
a0d0e21e
LW		 2824
2825IV
65202027 2826Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2827{
25da4f38
IZ		 2828 if (f >= IV_MAX) {
2829 UV uv;
2830
65202027 2831 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2832 return (IV) UV_MAX;
2833 uv = (UV) f;
2834 return (IV)uv;
2835 }
20cec16a 2836 if (f <= IV_MIN)
2837 return (IV) IV_MIN;
a0d0e21e
LW		 2838 return (IV) f;
2839}
5d94fbed
AD		 2840
2841UV
65202027 2842Perl_cast_uv(pTHX_ NV f)
5d94fbed 2843{
20cec16a 2844 if (f >= MY_UV_MAX)
2845 return (UV) MY_UV_MAX;
25da4f38
IZ		 2846 if (f < 0) {
2847 IV iv;
2848
2849 if (f < IV_MIN)
2850 return (UV)IV_MIN;
2851 iv = (IV) f;
2852 return (UV) iv;
2853 }
5d94fbed
AD		 2854 return (UV) f;
2855}
2856
fe14fcc3 2857#ifndef HAS_RENAME
79072805 2858I32
864dbfa3 2859Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2860{
93a17b20
LW		 2861 char *fa = strrchr(a,'/');
2862 char *fb = strrchr(b,'/');
62b28dd9
LW		 2863 struct stat tmpstatbuf1;
2864 struct stat tmpstatbuf2;
46fc3d4c 2865 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2866
2867 if (fa)
2868 fa++;
2869 else
2870 fa = a;
2871 if (fb)
2872 fb++;
2873 else
2874 fb = b;
2875 if (strNE(a,b))
2876 return FALSE;
2877 if (fa == a)
46fc3d4c 2878 sv_setpv(tmpsv, ".");
62b28dd9 2879 else
46fc3d4c 2880 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2881 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2882 return FALSE;
2883 if (fb == b)
46fc3d4c 2884 sv_setpv(tmpsv, ".");
62b28dd9 2885 else
46fc3d4c 2886 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2887 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2888 return FALSE;
2889 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2890 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2891}
fe14fcc3
LW		 2892#endif /* !HAS_RENAME */
2893
9e24b6e2 2894NV
a4bf32d5 2895Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
4f19785b
WSI		 2896{
2897 register char *s = start;
9e24b6e2
JH		 2898 register NV rnv = 0.0;
2899 register UV ruv = 0;
252aa082 2900 register bool seenb = FALSE;
9e24b6e2 2901 register bool overflowed = FALSE;
252aa082
JH		 2902
2903 for (; len-- && *s; s++) {
2904 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2905 if (*s == '_' && len && *retlen
2906 && (s[1] == '0' || s[1] == '1'))
2907 {
2908 --len;
2909 ++s;
2910 }
2911 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2912 /* Disallow 0bbb0b0bbb... */
2913 seenb = TRUE;
252aa082
JH		 2914 continue;
2915 }
2916 else {
627300f0
JH		 2917 if (ckWARN(WARN_DIGIT))
2918 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2919 "Illegal binary digit '%c' ignored", *s);
2920 break;
2921 }
9e24b6e2
JH		 2922 }
2923 if (!overflowed) {
2924 register UV xuv = ruv << 1;
2925
2926 if ((xuv >> 1) != ruv) {
9e24b6e2
JH		 2927 overflowed = TRUE;
2928 rnv = (NV) ruv;
627300f0
JH		 2929 if (ckWARN_d(WARN_OVERFLOW))
2930 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2931 "Integer overflow in binary number");
b21ed0a9
GS		 2932 }
2933 else
9e24b6e2
JH		 2934 ruv = xuv | (*s - '0');
2935 }
2936 if (overflowed) {
2937 rnv *= 2;
2938 /* If an NV has not enough bits in its mantissa to
2939 * represent an UV this summing of small low-order numbers
2940 * is a waste of time (because the NV cannot preserve
2941 * the low-order bits anyway): we could just remember when
2942 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2943 * right amount. */
9e24b6e2 2944 rnv += (*s - '0');
f248d071 2945 }
4f19785b 2946 }
9e24b6e2
JH		 2947 if (!overflowed)
2948 rnv = (NV) ruv;
893fe2c2 2949 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2950#if UVSIZE > 4
893fe2c2
JH		 2951 || (!overflowed && ruv > 0xffffffff )
2952#endif
2953 ) {
627300f0
JH		 2954 if (ckWARN(WARN_PORTABLE))
2955 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2956 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2957 }
2958 *retlen = s - start;
9e24b6e2 2959 return rnv;
4f19785b 2960}
9e24b6e2
JH		 2961
2962NV
a4bf32d5 2963Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 2964{
2965 register char *s = start;
9e24b6e2
JH		 2966 register NV rnv = 0.0;
2967 register UV ruv = 0;
2968 register bool overflowed = FALSE;
252aa082
JH		 2969
2970 for (; len-- && *s; s++) {
2971 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 2972 if (*s == '_' && len && *retlen
2973 && (s[1] >= '0' && s[1] <= '7'))
2974 {
2975 --len;
2976 ++s;
2977 }
252aa082 2978 else {
f84f607d
JH		 2979 /* Allow \octal to work the DWIM way (that is, stop scanning
2980 * as soon as non-octal characters are seen, complain only iff
2981 * someone seems to want to use the digits eight and nine). */
252aa082 2982 if (*s == '8' || *s == '9') {
627300f0
JH		 2983 if (ckWARN(WARN_DIGIT))
2984 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2985 "Illegal octal digit '%c' ignored", *s);
2986 }
2987 break;
2988 }
55497cff 2989 }
9e24b6e2 2990 if (!overflowed) {
893fe2c2 2991 register UV xuv = ruv << 3;
9e24b6e2
JH		 2992
2993 if ((xuv >> 3) != ruv) {
9e24b6e2
JH		 2994 overflowed = TRUE;
2995 rnv = (NV) ruv;
627300f0
JH		 2996 if (ckWARN_d(WARN_OVERFLOW))
2997 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2998 "Integer overflow in octal number");
b21ed0a9
GS		 2999 }
3000 else
9e24b6e2
JH		 3001 ruv = xuv | (*s - '0');
3002 }
3003 if (overflowed) {
3004 rnv *= 8.0;
3005 /* If an NV has not enough bits in its mantissa to
3006 * represent an UV this summing of small low-order numbers
3007 * is a waste of time (because the NV cannot preserve
3008 * the low-order bits anyway): we could just remember when
3009 * did we overflow and in the end just multiply rnv by the
3010 * right amount of 8-tuples. */
3011 rnv += (NV)(*s - '0');
3012 }
fe14fcc3 3013 }
9e24b6e2
JH		 3014 if (!overflowed)
3015 rnv = (NV) ruv;
893fe2c2 3016 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3017#if UVSIZE > 4
893fe2c2
JH		 3018 || (!overflowed && ruv > 0xffffffff )
3019#endif
3020 ) {
627300f0
JH		 3021 if (ckWARN(WARN_PORTABLE))
3022 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3023 "Octal number > 037777777777 non-portable");
d008e5eb 3024 }
fe14fcc3 3025 *retlen = s - start;
9e24b6e2 3026 return rnv;
fe14fcc3
LW		 3027}
3028
9e24b6e2 3029NV
a4bf32d5 3030Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3031{
3032 register char *s = start;
9e24b6e2
JH		 3033 register NV rnv = 0.0;
3034 register UV ruv = 0;
252aa082 3035 register bool seenx = FALSE;
9e24b6e2 3036 register bool overflowed = FALSE;
9e24b6e2 3037 char *hexdigit;
fe14fcc3 3038
9e24b6e2
JH		 3039 for (; len-- && *s; s++) {
3040 hexdigit = strchr((char *) PL_hexdigit, *s);
3041 if (!hexdigit) {
b21ed0a9
GS		 3042 if (*s == '_' && len && *retlen && s[1]
3043 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3044 {
3045 --len;
3046 ++s;
3047 }
3048 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3049 /* Disallow 0xxx0x0xxx... */
3050 seenx = TRUE;
252aa082
JH		 3051 continue;
3052 }
a0ed51b3 3053 else {
627300f0
JH		 3054 if (ckWARN(WARN_DIGIT))
3055 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3056 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3057 break;
3058 }
3059 }
9e24b6e2
JH		 3060 if (!overflowed) {
3061 register UV xuv = ruv << 4;
3062
3063 if ((xuv >> 4) != ruv) {
9e24b6e2
JH		 3064 overflowed = TRUE;
3065 rnv = (NV) ruv;
627300f0
JH		 3066 if (ckWARN_d(WARN_OVERFLOW))
3067 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3068 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3069 }
3070 else
9e24b6e2
JH		 3071 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3072 }
3073 if (overflowed) {
3074 rnv *= 16.0;
3075 /* If an NV has not enough bits in its mantissa to
3076 * represent an UV this summing of small low-order numbers
3077 * is a waste of time (because the NV cannot preserve
3078 * the low-order bits anyway): we could just remember when
3079 * did we overflow and in the end just multiply rnv by the
3080 * right amount of 16-tuples. */
3081 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3082 }
6ff81951 3083 }
9e24b6e2
JH		 3084 if (!overflowed)
3085 rnv = (NV) ruv;
893fe2c2 3086 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3087#if UVSIZE > 4
893fe2c2
JH		 3088 || (!overflowed && ruv > 0xffffffff )
3089#endif
3090 ) {
627300f0
JH		 3091 if (ckWARN(WARN_PORTABLE))
3092 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3093 "Hexadecimal number > 0xffffffff non-portable");
3094 }
fe14fcc3 3095 *retlen = s - start;
9e24b6e2 3096 return rnv;
fe14fcc3 3097}
760ac839 3098
491527d0 3099char*
864dbfa3 3100Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0 3101{
491527d0
GS		 3102 char *xfound = Nullch;
3103 char *xfailed = Nullch;
0f31cffe 3104 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3105 register char *s;
3106 I32 len;
3107 int retval;
3108#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3109# define SEARCH_EXTS ".bat", ".cmd", NULL
3110# define MAX_EXT_LEN 4
3111#endif
3112#ifdef OS2
3113# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3114# define MAX_EXT_LEN 4
3115#endif
3116#ifdef VMS
3117# define SEARCH_EXTS ".pl", ".com", NULL
3118# define MAX_EXT_LEN 4
3119#endif
3120 /* additional extensions to try in each dir if scriptname not found */
3121#ifdef SEARCH_EXTS
3122 char *exts[] = { SEARCH_EXTS };
3123 char **ext = search_ext ? search_ext : exts;
3124 int extidx = 0, i = 0;
3125 char *curext = Nullch;
3126#else
3127# define MAX_EXT_LEN 0
3128#endif
3129
3130 /*
3131 * If dosearch is true and if scriptname does not contain path
3132 * delimiters, search the PATH for scriptname.
3133 *
3134 * If SEARCH_EXTS is also defined, will look for each
3135 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3136 * while searching the PATH.
3137 *
3138 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3139 * proceeds as follows:
3140 * If DOSISH or VMSISH:
3141 * + look for ./scriptname{,.foo,.bar}
3142 * + search the PATH for scriptname{,.foo,.bar}
3143 *
3144 * If !DOSISH:
3145 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3146 * this will not look in '.' if it's not in the PATH)
3147 */
84486fc6 3148 tmpbuf[0] = '\0';
491527d0
GS		 3149
3150#ifdef VMS
3151# ifdef ALWAYS_DEFTYPES
3152 len = strlen(scriptname);
3153 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3154 int hasdir, idx = 0, deftypes = 1;
3155 bool seen_dot = 1;
3156
3157 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3158# else
3159 if (dosearch) {
3160 int hasdir, idx = 0, deftypes = 1;
3161 bool seen_dot = 1;
3162
3163 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3164# endif
3165 /* The first time through, just add SEARCH_EXTS to whatever we
3166 * already have, so we can check for default file types. */
3167 while (deftypes ||
84486fc6 3168 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3169 {
3170 if (deftypes) {
3171 deftypes = 0;
84486fc6 3172 *tmpbuf = '\0';
491527d0 3173 }
84486fc6
GS		 3174 if ((strlen(tmpbuf) + strlen(scriptname)
3175 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3176 continue; /* don't search dir with too-long name */
84486fc6 3177 strcat(tmpbuf, scriptname);
491527d0
GS		 3178#else /* !VMS */
3179
3180#ifdef DOSISH
3181 if (strEQ(scriptname, "-"))
3182 dosearch = 0;
3183 if (dosearch) { /* Look in '.' first. */
3184 char *cur = scriptname;
3185#ifdef SEARCH_EXTS
3186 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3187 while (ext[i])
3188 if (strEQ(ext[i++],curext)) {
3189 extidx = -1; /* already has an ext */
3190 break;
3191 }
3192 do {
3193#endif
3194 DEBUG_p(PerlIO_printf(Perl_debug_log,
3195 "Looking for %s\n",cur));
017f25f1
IZ		 3196 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3197 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3198 dosearch = 0;
3199 scriptname = cur;
3200#ifdef SEARCH_EXTS
3201 break;
3202#endif
3203 }
3204#ifdef SEARCH_EXTS
3205 if (cur == scriptname) {
3206 len = strlen(scriptname);
84486fc6 3207 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3208 break;
84486fc6 3209 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3210 }
3211 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3212 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3213#endif
3214 }
3215#endif
3216
cd39f2b6
JH		 3217#ifdef MACOS_TRADITIONAL
3218 if (dosearch && !strchr(scriptname, ':') &&
3219 (s = PerlEnv_getenv("Commands")))
3220#else
491527d0
GS		 3221 if (dosearch && !strchr(scriptname, '/')
3222#ifdef DOSISH
3223 && !strchr(scriptname, '\\')
3224#endif
cd39f2b6
JH		 3225 && (s = PerlEnv_getenv("PATH")))
3226#endif
3227 {
491527d0
GS		 3228 bool seen_dot = 0;
3229
3280af22
NIS		 3230 PL_bufend = s + strlen(s);
3231 while (s < PL_bufend) {
cd39f2b6
JH		 3232#ifdef MACOS_TRADITIONAL
3233 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3234 ',',
3235 &len);
3236#else
491527d0
GS		 3237#if defined(atarist) || defined(DOSISH)
3238 for (len = 0; *s
3239# ifdef atarist
3240 && *s != ','
3241# endif
3242 && *s != ';'; len++, s++) {
84486fc6
GS		 3243 if (len < sizeof tmpbuf)
3244 tmpbuf[len] = *s;
491527d0 3245 }
84486fc6
GS		 3246 if (len < sizeof tmpbuf)
3247 tmpbuf[len] = '\0';
491527d0 3248#else /* ! (atarist || DOSISH) */
3280af22 3249 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3250 ':',
3251 &len);
3252#endif /* ! (atarist || DOSISH) */
cd39f2b6 3253#endif /* MACOS_TRADITIONAL */
3280af22 3254 if (s < PL_bufend)
491527d0 3255 s++;
84486fc6 3256 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3257 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3258#ifdef MACOS_TRADITIONAL
3259 if (len && tmpbuf[len - 1] != ':')
3260 tmpbuf[len++] = ':';
3261#else
491527d0 3262 if (len
61ae2fbf 3263#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3264 && tmpbuf[len - 1] != '/'
3265 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3266#endif
3267 )
84486fc6
GS		 3268 tmpbuf[len++] = '/';
3269 if (len == 2 && tmpbuf[0] == '.')
491527d0 3270 seen_dot = 1;
cd39f2b6 3271#endif
84486fc6 3272 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3273#endif /* !VMS */
3274
3275#ifdef SEARCH_EXTS
84486fc6 3276 len = strlen(tmpbuf);
491527d0
GS		 3277 if (extidx > 0) /* reset after previous loop */
3278 extidx = 0;
3279 do {
3280#endif
84486fc6 3281 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3282 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3283 if (S_ISDIR(PL_statbuf.st_mode)) {
3284 retval = -1;
3285 }
491527d0
GS		 3286#ifdef SEARCH_EXTS
3287 } while ( retval < 0 /* not there */
3288 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3289 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3290 );
3291#endif
3292 if (retval < 0)
3293 continue;
3280af22
NIS		 3294 if (S_ISREG(PL_statbuf.st_mode)
3295 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3296#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3297 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3298#endif
3299 )
3300 {
84486fc6 3301 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3302 break;
3303 }
3304 if (!xfailed)
84486fc6 3305 xfailed = savepv(tmpbuf);
491527d0
GS		 3306 }
3307#ifndef DOSISH
017f25f1
IZ		 3308 if (!xfound && !seen_dot && !xfailed &&
3309 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3310 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3311#endif
3312 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3313 if (!xfound) {
3314 if (flags & 1) { /* do or die? */
cea2e8a9 3315 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3316 (xfailed ? "execute" : "find"),
3317 (xfailed ? xfailed : scriptname),
3318 (xfailed ? "" : " on PATH"),
3319 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3320 }
3321 scriptname = Nullch;
3322 }
491527d0
GS		 3323 if (xfailed)
3324 Safefree(xfailed);
3325 scriptname = xfound;
3326 }
9ccb31f9 3327 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3328}
3329
ba869deb
GS		 3330#ifndef PERL_GET_CONTEXT_DEFINED
3331
3332void *
3333Perl_get_context(void)
3334{
3335#if defined(USE_THREADS) || defined(USE_ITHREADS)
3336# ifdef OLD_PTHREADS_API
3337 pthread_addr_t t;
3338 if (pthread_getspecific(PL_thr_key, &t))
3339 Perl_croak_nocontext("panic: pthread_getspecific");
3340 return (void*)t;
3341# else
c44d3fdb
GS		 3342# ifdef I_MACH_CTHREADS
3343 return (void*)cthread_data(cthread_self());
3344# else
ba869deb
GS		 3345 return (void*)pthread_getspecific(PL_thr_key);
3346# endif
c44d3fdb 3347# endif
ba869deb
GS		 3348#else
3349 return (void*)NULL;
3350#endif
3351}
3352
3353void
3354Perl_set_context(void *t)
3355{
3356#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3357# ifdef I_MACH_CTHREADS
3358 cthread_set_data(cthread_self(), t);
3359# else
ba869deb
GS		 3360 if (pthread_setspecific(PL_thr_key, t))
3361 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3362# endif
ba869deb
GS		 3363#endif
3364}
3365
3366#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3367
11343788 3368#ifdef USE_THREADS
ba869deb 3369
12ca11f6
MB		 3370#ifdef FAKE_THREADS
3371/* Very simplistic scheduler for now */
3372void
3373schedule(void)
3374{
c7848ba1 3375 thr = thr->i.next_run;
12ca11f6
MB		 3376}
3377
3378void
864dbfa3 3379Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3380{
3381 *cp = 0;
3382}
3383
3384void
864dbfa3 3385Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3386{
51dd5992 3387 perl_os_thread t;
12ca11f6
MB		 3388 perl_cond cond = *cp;
3389
3390 if (!cond)
3391 return;
3392 t = cond->thread;
3393 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3394 t->i.next_run = thr->i.next_run;
3395 thr->i.next_run->i.prev_run = t;
3396 t->i.prev_run = thr;
3397 thr->i.next_run = t;
3398 thr->i.wait_queue = 0;
12ca11f6
MB		 3399 /* Remove from the wait queue */
3400 *cp = cond->next;
3401 Safefree(cond);
3402}
3403
3404void
864dbfa3 3405Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3406{
51dd5992 3407 perl_os_thread t;
12ca11f6
MB		 3408 perl_cond cond, cond_next;
3409
3410 for (cond = *cp; cond; cond = cond_next) {
3411 t = cond->thread;
3412 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3413 t->i.next_run = thr->i.next_run;
3414 thr->i.next_run->i.prev_run = t;
3415 t->i.prev_run = thr;
3416 thr->i.next_run = t;
3417 thr->i.wait_queue = 0;
12ca11f6
MB		 3418 /* Remove from the wait queue */
3419 cond_next = cond->next;
3420 Safefree(cond);
3421 }
3422 *cp = 0;
3423}
3424
3425void
864dbfa3 3426Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3427{
3428 perl_cond cond;
3429
c7848ba1 3430 if (thr->i.next_run == thr)
cea2e8a9 3431 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3432
0f15f207 3433 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3434 cond->thread = thr;
3435 cond->next = *cp;
3436 *cp = cond;
c7848ba1 3437 thr->i.wait_queue = cond;
12ca11f6 3438 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3439 thr->i.next_run->i.prev_run = thr->i.prev_run;
3440 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3441}
3442#endif /* FAKE_THREADS */
3443
f93b4edd 3444MAGIC *
864dbfa3 3445Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3446{
3447 MAGIC *mg;
3448
3449 SvUPGRADE(sv, SVt_PVMG);
3450 mg = mg_find(sv, 'm');
3451 if (!mg) {
3452 condpair_t *cp;
3453
3454 New(53, cp, 1, condpair_t);
3455 MUTEX_INIT(&cp->mutex);
3456 COND_INIT(&cp->owner_cond);
3457 COND_INIT(&cp->cond);
3458 cp->owner = 0;
1feb2720 3459 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3460 mg = mg_find(sv, 'm');
3461 if (mg) {
3462 /* someone else beat us to initialising it */
1feb2720 3463 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3464 MUTEX_DESTROY(&cp->mutex);
3465 COND_DESTROY(&cp->owner_cond);
3466 COND_DESTROY(&cp->cond);
3467 Safefree(cp);
3468 }
3469 else {
3470 sv_magic(sv, Nullsv, 'm', 0, 0);
3471 mg = SvMAGIC(sv);
3472 mg->mg_ptr = (char *)cp;
565764a8 3473 mg->mg_len = sizeof(cp);
1feb2720 3474 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3475 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3476 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3477 }
3478 }
3479 return mg;
3480}
a863c7d1 3481
7a94d673 3482SV *
1cb75286 3483Perl_sv_lock(pTHX_ SV *osv)
7a94d673
DS		 3484{
3485 MAGIC *mg;
3486 SV *sv = osv;
3487
67368f91 3488 LOCK_SV_LOCK_MUTEX;
7a94d673
DS		 3489 if (SvROK(sv)) {
3490 sv = SvRV(sv);
7a94d673
DS		 3491 }
3492
3493 mg = condpair_magic(sv);
3494 MUTEX_LOCK(MgMUTEXP(mg));
3495 if (MgOWNER(mg) == thr)
3496 MUTEX_UNLOCK(MgMUTEXP(mg));
1cb75286 3497 else {
7a94d673
DS		 3498 while (MgOWNER(mg))
3499 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3500 MgOWNER(mg) = thr;
1cb75286
BS		 3501 DEBUG_S(PerlIO_printf(Perl_debug_log,
3502 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
7a94d673
DS		 3503 PTR2UV(thr), PTR2UV(sv));)
3504 MUTEX_UNLOCK(MgMUTEXP(mg));
3505 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3506 }
67368f91 3507 UNLOCK_SV_LOCK_MUTEX;
1cb75286 3508 return sv;
7a94d673
DS		 3509}
3510
a863c7d1 3511/*
199100c8
MB		 3512 * Make a new perl thread structure using t as a prototype. Some of the
3513 * fields for the new thread are copied from the prototype thread, t,
3514 * so t should not be running in perl at the time this function is
3515 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3516 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3517 */
52e1cb5e 3518struct perl_thread *
864dbfa3 3519Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3520{
c5be433b 3521#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3522 struct perl_thread *thr;
cea2e8a9 3523#endif
a863c7d1 3524 SV *sv;
199100c8
MB		 3525 SV **svp;
3526 I32 i;
3527
79cb57f6 3528 sv = newSVpvn("", 0);
52e1cb5e
JH		 3529 SvGROW(sv, sizeof(struct perl_thread) + 1);
3530 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3531 thr = (Thread) SvPVX(sv);
949ced2d 3532#ifdef DEBUGGING
52e1cb5e 3533 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3534 PL_markstack = 0;
3535 PL_scopestack = 0;
3536 PL_savestack = 0;
3537 PL_retstack = 0;
3538 PL_dirty = 0;
3539 PL_localizing = 0;
949ced2d 3540 Zero(&PL_hv_fetch_ent_mh, 1, HE);
72d299db
GS		 3541 PL_efloatbuf = (char*)NULL;
3542 PL_efloatsize = 0;
949ced2d
GS		 3543#else
3544 Zero(thr, 1, struct perl_thread);
3545#endif
199100c8
MB		 3546
3547 thr->oursv = sv;
cea2e8a9 3548 init_stacks();
a863c7d1 3549
533c011a 3550 PL_curcop = &PL_compiling;
c5be433b 3551 thr->interp = t->interp;
199100c8 3552 thr->cvcache = newHV();
54b9620d 3553 thr->threadsv = newAV();
a863c7d1 3554 thr->specific = newAV();
79cb57f6 3555 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3556 thr->flags = THRf_R_JOINABLE;
3557 MUTEX_INIT(&thr->mutex);
199100c8 3558
5c831c24 3559 JMPENV_BOOTSTRAP;
533c011a 3560
72d299db 3561 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
533c011a
NIS		 3562 PL_restartop = 0;
3563
b099ddc0 3564 PL_statname = NEWSV(66,0);
5a844595 3565 PL_errors = newSVpvn("", 0);
b099ddc0 3566 PL_maxscream = -1;
0b94c7bb
GS		 3567 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3568 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3569 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3570 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3571 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3572 PL_regindent = 0;
3573 PL_reginterp_cnt = 0;
3574 PL_lastscream = Nullsv;
3575 PL_screamfirst = 0;
3576 PL_screamnext = 0;
3577 PL_reg_start_tmp = 0;
3578 PL_reg_start_tmpl = 0;
14ed4b74 3579 PL_reg_poscache = Nullch;
b099ddc0
GS		 3580
3581 /* parent thread's data needs to be locked while we make copy */
3582 MUTEX_LOCK(&t->mutex);
3583
14dd3ad8 3584#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3585 PL_protect = t->Tprotect;
14dd3ad8 3586#endif
312caa8e 3587
b099ddc0
GS		 3588 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3589 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3590 PL_curstash = t->Tcurstash; /* always be set to main? */
3591
6b88bc9c 3592 PL_tainted = t->Ttainted;
84fee439
NIS		 3593 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3594 PL_nrs = newSVsv(t->Tnrs);
0ee3e303 3595 PL_rs = t->Tnrs ? SvREFCNT_inc(PL_nrs) : Nullsv;
84fee439
NIS		 3596 PL_last_in_gv = Nullgv;
3597 PL_ofslen = t->Tofslen;
3598 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3599 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3600 PL_chopset = t->Tchopset;
84fee439
NIS		 3601 PL_bodytarget = newSVsv(t->Tbodytarget);
3602 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3603 if (t->Tformtarget == t->Ttoptarget)
3604 PL_formtarget = PL_toptarget;
3605 else
3606 PL_formtarget = PL_bodytarget;
533c011a 3607
54b9620d
MB		 3608 /* Initialise all per-thread SVs that the template thread used */
3609 svp = AvARRAY(t->threadsv);
93965878 3610 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3611 if (*svp && *svp != &PL_sv_undef) {
199100c8 3612 SV *sv = newSVsv(*svp);
54b9620d 3613 av_store(thr->threadsv, i, sv);
533c011a 3614 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3615 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3616 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3617 (IV)i, t, thr));
199100c8
MB		 3618 }
3619 }
940cb80d 3620 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3621
533c011a
NIS		 3622 MUTEX_LOCK(&PL_threads_mutex);
3623 PL_nthreads++;
3624 thr->tid = ++PL_threadnum;
199100c8
MB		 3625 thr->next = t->next;
3626 thr->prev = t;
3627 t->next = thr;
3628 thr->next->prev = thr;
533c011a 3629 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3630
b099ddc0
GS		 3631 /* done copying parent's state */
3632 MUTEX_UNLOCK(&t->mutex);
3633
a863c7d1 3634#ifdef HAVE_THREAD_INTERN
4f63d024 3635 Perl_init_thread_intern(thr);
a863c7d1 3636#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3637 return thr;
3638}
11343788 3639#endif /* USE_THREADS */
760ac839 3640
4d46a988 3641#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3642/*
3643 * This hack is to force load of "huge" support from libm.a
3644 * So it is in perl for (say) POSIX to use.
3645 * Needed for SunOS with Sun's 'acc' for example.
3646 */
65202027 3647NV
8ac85365 3648Perl_huge(void)
760ac839 3649{
4d46a988
JH		 3650# if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3651 return HUGE_VALL;
3652# endif
3653 return HUGE_VAL;
760ac839
LW		 3654}
3655#endif
4e35701f 3656
22239a37
NIS		 3657#ifdef PERL_GLOBAL_STRUCT
3658struct perl_vars *
864dbfa3 3659Perl_GetVars(pTHX)
22239a37 3660{
533c011a 3661 return &PL_Vars;
22239a37 3662}
31fb1209
NIS		 3663#endif
3664
3665char **
864dbfa3 3666Perl_get_op_names(pTHX)
31fb1209 3667{
22c35a8c 3668 return PL_op_name;
31fb1209
NIS		 3669}
3670
3671char **
864dbfa3 3672Perl_get_op_descs(pTHX)
31fb1209 3673{
22c35a8c 3674 return PL_op_desc;
31fb1209 3675}
9e6b2b00
GS		 3676
3677char *
864dbfa3 3678Perl_get_no_modify(pTHX)
9e6b2b00 3679{
22c35a8c 3680 return (char*)PL_no_modify;
9e6b2b00
GS		 3681}
3682
3683U32 *
864dbfa3 3684Perl_get_opargs(pTHX)
9e6b2b00 3685{
22c35a8c 3686 return PL_opargs;
9e6b2b00 3687}
51aa15f3 3688
0cb96387
GS		 3689PPADDR_t*
3690Perl_get_ppaddr(pTHX)
3691{
3692 return &PL_ppaddr;
3693}
3694
a6c40364
GS		 3695#ifndef HAS_GETENV_LEN
3696char *
bf4acbe4 3697Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
a6c40364
GS		 3698{
3699 char *env_trans = PerlEnv_getenv(env_elem);
3700 if (env_trans)
3701 *len = strlen(env_trans);
3702 return env_trans;
f675dbe5
CB		 3703}
3704#endif
3705
dc9e4912
GS		 3706
3707MGVTBL*
864dbfa3 3708Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3709{
3710 MGVTBL* result = Null(MGVTBL*);
3711
3712 switch(vtbl_id) {
3713 case want_vtbl_sv:
3714 result = &PL_vtbl_sv;
3715 break;
3716 case want_vtbl_env:
3717 result = &PL_vtbl_env;
3718 break;
3719 case want_vtbl_envelem:
3720 result = &PL_vtbl_envelem;
3721 break;
3722 case want_vtbl_sig:
3723 result = &PL_vtbl_sig;
3724 break;
3725 case want_vtbl_sigelem:
3726 result = &PL_vtbl_sigelem;
3727 break;
3728 case want_vtbl_pack:
3729 result = &PL_vtbl_pack;
3730 break;
3731 case want_vtbl_packelem:
3732 result = &PL_vtbl_packelem;
3733 break;
3734 case want_vtbl_dbline:
3735 result = &PL_vtbl_dbline;
3736 break;
3737 case want_vtbl_isa:
3738 result = &PL_vtbl_isa;
3739 break;
3740 case want_vtbl_isaelem:
3741 result = &PL_vtbl_isaelem;
3742 break;
3743 case want_vtbl_arylen:
3744 result = &PL_vtbl_arylen;
3745 break;
3746 case want_vtbl_glob:
3747 result = &PL_vtbl_glob;
3748 break;
3749 case want_vtbl_mglob:
3750 result = &PL_vtbl_mglob;
3751 break;
3752 case want_vtbl_nkeys:
3753 result = &PL_vtbl_nkeys;
3754 break;
3755 case want_vtbl_taint:
3756 result = &PL_vtbl_taint;
3757 break;
3758 case want_vtbl_substr:
3759 result = &PL_vtbl_substr;
3760 break;
3761 case want_vtbl_vec:
3762 result = &PL_vtbl_vec;
3763 break;
3764 case want_vtbl_pos:
3765 result = &PL_vtbl_pos;
3766 break;
3767 case want_vtbl_bm:
3768 result = &PL_vtbl_bm;
3769 break;
3770 case want_vtbl_fm:
3771 result = &PL_vtbl_fm;
3772 break;
3773 case want_vtbl_uvar:
3774 result = &PL_vtbl_uvar;
3775 break;
3776#ifdef USE_THREADS
3777 case want_vtbl_mutex:
3778 result = &PL_vtbl_mutex;
3779 break;
3780#endif
3781 case want_vtbl_defelem:
3782 result = &PL_vtbl_defelem;
3783 break;
3784 case want_vtbl_regexp:
3785 result = &PL_vtbl_regexp;
3786 break;
3787 case want_vtbl_regdata:
3788 result = &PL_vtbl_regdata;
3789 break;
3790 case want_vtbl_regdatum:
3791 result = &PL_vtbl_regdatum;
3792 break;
3c90161d 3793#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3794 case want_vtbl_collxfrm:
3795 result = &PL_vtbl_collxfrm;
3796 break;
3c90161d 3797#endif
dc9e4912
GS		 3798 case want_vtbl_amagic:
3799 result = &PL_vtbl_amagic;
3800 break;
3801 case want_vtbl_amagicelem:
3802 result = &PL_vtbl_amagicelem;
3803 break;
810b8aa5
GS		 3804 case want_vtbl_backref:
3805 result = &PL_vtbl_backref;
3806 break;
dc9e4912
GS		 3807 }
3808 return result;
3809}
3810
767df6a1 3811I32
864dbfa3 3812Perl_my_fflush_all(pTHX)
767df6a1 3813{
bb2c2f1d 3814#if defined(FFLUSH_NULL)
ce720889 3815 return PerlIO_flush(NULL);
767df6a1 3816#else
bb2c2f1d
GS		 3817# if defined(HAS__FWALK)
3818 /* undocumented, unprototyped, but very useful BSDism */
3819 extern void _fwalk(int (*)(FILE *));
3820 _fwalk(&fflush);
3821 return 0;
3822# else
767df6a1 3823 long open_max = -1;
bb2c2f1d
GS		 3824# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3825# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
d2201af2 3826 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
bb2c2f1d
GS		 3827# else
3828# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
767df6a1 3829 open_max = sysconf(_SC_OPEN_MAX);
767df6a1 3830# else
bb2c2f1d
GS		 3831# ifdef FOPEN_MAX
3832 open_max = FOPEN_MAX;
767df6a1 3833# else
bb2c2f1d
GS		 3834# ifdef OPEN_MAX
3835 open_max = OPEN_MAX;
3836# else
3837# ifdef _NFILE
d2201af2 3838 open_max = _NFILE;
bb2c2f1d 3839# endif
767df6a1
JH		 3840# endif
3841# endif
3842# endif
bb2c2f1d 3843# endif
767df6a1
JH		 3844 if (open_max > 0) {
3845 long i;
3846 for (i = 0; i < open_max; i++)
d2201af2
AD		 3847 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3848 STDIO_STREAM_ARRAY[i]._file < open_max &&
3849 STDIO_STREAM_ARRAY[i]._flag)
3850 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3851 return 0;
3852 }
bb2c2f1d 3853# endif
767df6a1
JH		 3854 SETERRNO(EBADF,RMS$_IFI);
3855 return EOF;
bb2c2f1d 3856# endif
767df6a1
JH		 3857#endif
3858}
097ee67d 3859
65202027 3860NV
69282e91
GS		 3861Perl_my_atof(pTHX_ const char* s)
3862{
1e8df282 3863 NV x = 0.0;
097ee67d 3864#ifdef USE_LOCALE_NUMERIC
d43ce814 3865 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
1e8df282 3866 NV y;
097ee67d 3867
1e8df282 3868 Perl_atof2(s, x);
097ee67d 3869 SET_NUMERIC_STANDARD();
1e8df282 3870 Perl_atof2(s, y);
097ee67d
JH		 3871 SET_NUMERIC_LOCAL();
3872 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3873 return y;
65202027
DS		 3874 }
3875 else
1e8df282 3876 Perl_atof2(s, x);
097ee67d 3877#else
1e8df282 3878 Perl_atof2(s, x);
097ee67d 3879#endif
1e8df282 3880 return x;
097ee67d 3881}
69282e91
GS		 3882
3883void
f87d2592 3884Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
69282e91 3885{
f87d2592 3886 char *vile;
0139fc7d 3887 I32 warn_type;
f87d2592 3888 char *func =
0139fc7d
GS		 3889 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3890 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
f87d2592
GS		 3891 PL_op_desc[op];
3892 char *pars = OP_IS_FILETEST(op) ? "" : "()";
3893 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
3894 "socket" : "filehandle";
3895 char *name = NULL;
69282e91 3896
f87d2592
GS		 3897 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
3898 vile = "closed";
0139fc7d 3899 warn_type = WARN_CLOSED;
f87d2592
GS		 3900 }
3901 else {
3902 vile = "unopened";
0139fc7d
GS		 3903 warn_type = WARN_UNOPENED;
3904 }
3905
3906 if (gv && isGV(gv)) {
3907 SV *sv = sv_newmortal();
3908 gv_efullname4(sv, gv, Nullch, FALSE);
3909 name = SvPVX(sv);
f87d2592 3910 }
69282e91 3911
f87d2592 3912 if (name && *name) {
0139fc7d 3913 Perl_warner(aTHX_ warn_type,
f87d2592 3914 "%s%s on %s %s %s", func, pars, vile, type, name);
0139fc7d
GS		 3915 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3916 Perl_warner(aTHX_ warn_type,
f87d2592
GS		 3917 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3918 func, pars, name);
3919 }
3920 else {
0139fc7d 3921 Perl_warner(aTHX_ warn_type,
f87d2592 3922 "%s%s on %s %s", func, pars, vile, type);
0139fc7d
GS		 3923 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
3924 Perl_warner(aTHX_ warn_type,
f87d2592
GS		 3925 "\t(Are you trying to call %s%s on dirhandle?)\n",
3926 func, pars);
3927 }
69282e91 3928}
2f41d0a8
JH		 3929
3930#ifdef EBCDIC
3ef34714
JH		 3931/* in ASCII order, not that it matters */
3932static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
3933
2f41d0a8
JH		 3934int
3935Perl_ebcdic_control(pTHX_ int ch)
3936{
3937 if (ch > 'a') {
3938 char *ctlp;
3939
3940 if (islower(ch))
3941 ch = toupper(ch);
3942
3943 if ((ctlp = strchr(controllablechars, ch)) == 0) {
3944 Perl_die(aTHX_ "unrecognised control character '%c'\n", ch);
3945 }
3946
3947 if (ctlp == controllablechars)
3948 return('\177'); /* DEL */
3949 else
3950 return((unsigned char)(ctlp - controllablechars - 1));
3951 } else { /* Want uncontrol */
3952 if (ch == '\177' || ch == -1)
3953 return('?');
3954 else if (ch == '\157')
3955 return('\177');
3956 else if (ch == '\174')
3957 return('\000');
3958 else if (ch == '^') /* '\137' in 1047, '\260' in 819 */
3959 return('\036');
3960 else if (ch == '\155')
3961 return('\037');
3962 else if (0 < ch && ch < (sizeof(controllablechars) - 1))
3963 return(controllablechars[ch+1]);
3964 else
3965 Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF);
3966 }
3967}
3968#endif
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