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Back out Simon's pid hackery for now.
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
bc89e66f 3 * Copyright (c) 1991-2001, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
64ca3a65 19#ifndef PERL_MICRO
e1dfb34b 20#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 21#include <signal.h>
62b28dd9 22#endif
a687059c 23
36477c24 24#ifndef SIG_ERR
25# define SIG_ERR ((Sighandler_t) -1)
26#endif
64ca3a65 27#endif
36477c24 28
a687059c
LW		 29#ifdef I_VFORK
30# include <vfork.h>
31#endif
32
94b6baf5
AD		 33/* Put this after #includes because fork and vfork prototypes may
34 conflict.
35*/
36#ifndef HAS_VFORK
37# define vfork fork
38#endif
39
ff68c719 40#ifdef I_SYS_WAIT
41# include <sys/wait.h>
42#endif
43
097ee67d
JH		 44#ifdef I_LOCALE
45# include <locale.h>
46#endif
47
8d063cd8 48#define FLUSH
8d063cd8 49
a0d0e21e 50#ifdef LEAKTEST
a0d0e21e 51
8c52afec
IZ		 52long xcount[MAXXCOUNT];
53long lastxcount[MAXXCOUNT];
54long xycount[MAXXCOUNT][MAXYCOUNT];
55long lastxycount[MAXXCOUNT][MAXYCOUNT];
56
a0d0e21e 57#endif
a863c7d1 58
16cebae2
GS		 59#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
60# define FD_CLOEXEC 1 /* NeXT needs this */
61#endif
62
f2517201 63/* paranoid version of system's malloc() */
8d063cd8 64
a687059c
LW		 65/* NOTE: Do not call the next three routines directly. Use the macros
66 * in handy.h, so that we can easily redefine everything to do tracking of
67 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 68 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 69 */
70
bd4080b3 71Malloc_t
4f63d024 72Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 73{
54aff467 74 dTHX;
bd4080b3 75 Malloc_t ptr;
55497cff 76#ifdef HAS_64K_LIMIT
62b28dd9 77 if (size > 0xffff) {
bf49b057 78 PerlIO_printf(Perl_error_log,
16cebae2 79 "Allocation too large: %lx\n", size) FLUSH;
54aff467 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW		 83#ifdef DEBUGGING
84 if ((long)size < 0)
4f63d024 85 Perl_croak_nocontext("panic: malloc");
34de22dd 86#endif
12ae5dfc 87 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 88 PERL_ALLOC_CHECK(ptr);
97835f67 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 90 if (ptr != Nullch)
91 return ptr;
3280af22 92 else if (PL_nomemok)
7c0587c8 93 return Nullch;
8d063cd8 94 else {
bf49b057 95 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 96 my_exit(1);
4e35701f 97 return Nullch;
8d063cd8
LW		 98 }
99 /*NOTREACHED*/
100}
101
f2517201 102/* paranoid version of system's realloc() */
8d063cd8 103
bd4080b3 104Malloc_t
4f63d024 105Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 106{
54aff467 107 dTHX;
bd4080b3 108 Malloc_t ptr;
9a34ef1d 109#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 110 Malloc_t PerlMem_realloc();
ecfc5424 111#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 112
a1d180c4 113#ifdef HAS_64K_LIMIT
5f05dabc 114 if (size > 0xffff) {
bf49b057 115 PerlIO_printf(Perl_error_log,
5f05dabc 116 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 117 my_exit(1);
5f05dabc 118 }
55497cff 119#endif /* HAS_64K_LIMIT */
7614df0c 120 if (!size) {
f2517201 121 safesysfree(where);
7614df0c
JD		 122 return NULL;
123 }
124
378cc40b 125 if (!where)
f2517201 126 return safesysmalloc(size);
34de22dd
LW		 127#ifdef DEBUGGING
128 if ((long)size < 0)
4f63d024 129 Perl_croak_nocontext("panic: realloc");
34de22dd 130#endif
12ae5dfc 131 ptr = (Malloc_t)PerlMem_realloc(where,size);
da927450 132 PERL_ALLOC_CHECK(ptr);
a1d180c4 133
97835f67
JH		 134 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
135 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 136
8d063cd8
LW		 137 if (ptr != Nullch)
138 return ptr;
3280af22 139 else if (PL_nomemok)
7c0587c8 140 return Nullch;
8d063cd8 141 else {
bf49b057 142 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 143 my_exit(1);
4e35701f 144 return Nullch;
8d063cd8
LW		 145 }
146 /*NOTREACHED*/
147}
148
f2517201 149/* safe version of system's free() */
8d063cd8 150
54310121 151Free_t
4f63d024 152Perl_safesysfree(Malloc_t where)
8d063cd8 153{
155aba94 154#ifdef PERL_IMPLICIT_SYS
54aff467 155 dTHX;
155aba94 156#endif
97835f67 157 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 158 if (where) {
de3bb511 159 /*SUPPRESS 701*/
6ad3d225 160 PerlMem_free(where);
378cc40b 161 }
8d063cd8
LW		 162}
163
f2517201 164/* safe version of system's calloc() */
1050c9ca 165
bd4080b3 166Malloc_t
4f63d024 167Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 168{
54aff467 169 dTHX;
bd4080b3 170 Malloc_t ptr;
1050c9ca 171
55497cff 172#ifdef HAS_64K_LIMIT
5f05dabc 173 if (size * count > 0xffff) {
bf49b057 174 PerlIO_printf(Perl_error_log,
5f05dabc 175 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 176 my_exit(1);
5f05dabc 177 }
55497cff 178#endif /* HAS_64K_LIMIT */
1050c9ca 179#ifdef DEBUGGING
180 if ((long)size < 0 || (long)count < 0)
4f63d024 181 Perl_croak_nocontext("panic: calloc");
1050c9ca 182#endif
0b7c1c42 183 size *= count;
12ae5dfc 184 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 185 PERL_ALLOC_CHECK(ptr);
97835f67 186 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 187 if (ptr != Nullch) {
188 memset((void*)ptr, 0, size);
189 return ptr;
190 }
3280af22 191 else if (PL_nomemok)
1050c9ca 192 return Nullch;
193 else {
bf49b057 194 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 195 my_exit(1);
4e35701f 196 return Nullch;
1050c9ca 197 }
198 /*NOTREACHED*/
199}
200
a687059c
LW		 201#ifdef LEAKTEST
202
8c52afec
IZ		 203struct mem_test_strut {
204 union {
205 long type;
206 char c[2];
207 } u;
208 long size;
209};
210
211# define ALIGN sizeof(struct mem_test_strut)
212
213# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
214# define typeof_chunk(ch) \
215 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
216# define set_typeof_chunk(ch,t) \
217 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
218#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
219 ? MAXYCOUNT - 1 \
220 : ( (size) > 40 \
221 ? ((size) - 1)/8 + 5 \
222 : ((size) - 1)/4))
8d063cd8 223
bd4080b3 224Malloc_t
4f63d024 225Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 226{
8c52afec 227 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 228
8c52afec
IZ		 229 xcount[x] += size;
230 xycount[x][SIZE_TO_Y(size)]++;
231 set_typeof_chunk(where, x);
232 sizeof_chunk(where) = size;
233 return (Malloc_t)(where + ALIGN);
8d063cd8 234}
8d063cd8 235
bd4080b3 236Malloc_t
4f63d024 237Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 238{
8c52afec
IZ		 239 char *where = (char*)wh;
240
241 if (!wh)
242 return safexmalloc(0,size);
a1d180c4 243
8c52afec
IZ		 244 {
245 MEM_SIZE old = sizeof_chunk(where - ALIGN);
246 int t = typeof_chunk(where - ALIGN);
247 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
a1d180c4 248
8c52afec
IZ		 249 xycount[t][SIZE_TO_Y(old)]--;
250 xycount[t][SIZE_TO_Y(size)]++;
251 xcount[t] += size - old;
252 sizeof_chunk(new) = size;
253 return (Malloc_t)(new + ALIGN);
254 }
a687059c
LW		 255}
256
257void
4f63d024 258Perl_safexfree(Malloc_t wh)
a687059c 259{
79072805 260 I32 x;
8c52afec
IZ		 261 char *where = (char*)wh;
262 MEM_SIZE size;
a1d180c4 263
a687059c
LW		 264 if (!where)
265 return;
266 where -= ALIGN;
8c52afec 267 size = sizeof_chunk(where);
a687059c 268 x = where[0] + 100 * where[1];
8c52afec
IZ		 269 xcount[x] -= size;
270 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 271 safefree(where);
272}
273
bd4080b3 274Malloc_t
4f63d024 275Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 276{
8c52afec
IZ		 277 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
278 xcount[x] += size;
279 xycount[x][SIZE_TO_Y(size)]++;
280 memset((void*)(where + ALIGN), 0, size * count);
281 set_typeof_chunk(where, x);
282 sizeof_chunk(where) = size;
283 return (Malloc_t)(where + ALIGN);
1050c9ca 284}
285
864dbfa3 286STATIC void
cea2e8a9 287S_xstat(pTHX_ int flag)
8d063cd8 288{
8c52afec
IZ		 289 register I32 i, j, total = 0;
290 I32 subtot[MAXYCOUNT];
8d063cd8 291
8c52afec
IZ		 292 for (j = 0; j < MAXYCOUNT; j++) {
293 subtot[j] = 0;
294 }
a1d180c4 295
bf49b057 296 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 297 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 298 total += xcount[i];
299 for (j = 0; j < MAXYCOUNT; j++) {
300 subtot[j] += xycount[i][j];
301 }
302 if (flag == 0
303 ? xcount[i] /* Have something */
a1d180c4 304 : (flag == 2
8c52afec
IZ		 305 ? xcount[i] != lastxcount[i] /* Changed */
306 : xcount[i] > lastxcount[i])) { /* Growed */
a1d180c4 307 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 308 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 309 lastxcount[i] = xcount[i];
8c52afec 310 for (j = 0; j < MAXYCOUNT; j++) {
a1d180c4 311 if ( flag == 0
8c52afec 312 ? xycount[i][j] /* Have something */
a1d180c4 313 : (flag == 2
8c52afec
IZ		 314 ? xycount[i][j] != lastxycount[i][j] /* Changed */
315 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
a1d180c4
NIS		 316 PerlIO_printf(Perl_debug_log,"%3ld ",
317 flag == 2
318 ? xycount[i][j] - lastxycount[i][j]
8c52afec
IZ		 319 : xycount[i][j]);
320 lastxycount[i][j] = xycount[i][j];
321 } else {
bf49b057 322 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 323 }
324 }
bf49b057 325 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 326 }
327 }
328 if (flag != 2) {
bf49b057 329 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 330 for (j = 0; j < MAXYCOUNT; j++) {
331 if (subtot[j]) {
bf49b057 332 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 333 } else {
bf49b057 334 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 335 }
8d063cd8 336 }
bf49b057 337 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 338 }
8d063cd8 339}
a687059c
LW		 340
341#endif /* LEAKTEST */
8d063cd8
LW		 342
343/* copy a string up to some (non-backslashed) delimiter, if any */
344
345char *
864dbfa3 346Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 347{
fc36a67e 348 register I32 tolen;
349 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 350 if (*from == '\\') {
351 if (from[1] == delim)
352 from++;
fc36a67e 353 else {
354 if (to < toend)
355 *to++ = *from;
356 tolen++;
357 from++;
358 }
378cc40b 359 }
bedebaa5 360 else if (*from == delim)
8d063cd8 361 break;
fc36a67e 362 if (to < toend)
363 *to++ = *from;
8d063cd8 364 }
bedebaa5
CS		 365 if (to < toend)
366 *to = '\0';
fc36a67e 367 *retlen = tolen;
8d063cd8
LW		 368 return from;
369}
370
371/* return ptr to little string in big string, NULL if not found */
378cc40b 372/* This routine was donated by Corey Satten. */
8d063cd8
LW		 373
374char *
864dbfa3 375Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 376{
08105a92 377 register const char *s, *x;
79072805 378 register I32 first;
378cc40b 379
a687059c 380 if (!little)
08105a92 381 return (char*)big;
a687059c 382 first = *little++;
378cc40b 383 if (!first)
08105a92 384 return (char*)big;
378cc40b
LW		 385 while (*big) {
386 if (*big++ != first)
387 continue;
388 for (x=big,s=little; *s; /**/ ) {
389 if (!*x)
390 return Nullch;
391 if (*s++ != *x++) {
392 s--;
393 break;
394 }
395 }
396 if (!*s)
08105a92 397 return (char*)(big-1);
378cc40b
LW		 398 }
399 return Nullch;
400}
8d063cd8 401
a687059c
LW		 402/* same as instr but allow embedded nulls */
403
404char *
864dbfa3 405Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 406{
08105a92 407 register const char *s, *x;
79072805 408 register I32 first = *little;
08105a92 409 register const char *littleend = lend;
378cc40b 410
a0d0e21e 411 if (!first && little >= littleend)
08105a92 412 return (char*)big;
de3bb511
LW		 413 if (bigend - big < littleend - little)
414 return Nullch;
a687059c
LW		 415 bigend -= littleend - little++;
416 while (big <= bigend) {
417 if (*big++ != first)
418 continue;
419 for (x=big,s=little; s < littleend; /**/ ) {
420 if (*s++ != *x++) {
421 s--;
422 break;
423 }
424 }
425 if (s >= littleend)
08105a92 426 return (char*)(big-1);
378cc40b 427 }
a687059c
LW		 428 return Nullch;
429}
430
431/* reverse of the above--find last substring */
432
433char *
864dbfa3 434Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 435{
08105a92
GS		 436 register const char *bigbeg;
437 register const char *s, *x;
79072805 438 register I32 first = *little;
08105a92 439 register const char *littleend = lend;
a687059c 440
a0d0e21e 441 if (!first && little >= littleend)
08105a92 442 return (char*)bigend;
a687059c
LW		 443 bigbeg = big;
444 big = bigend - (littleend - little++);
445 while (big >= bigbeg) {
446 if (*big-- != first)
447 continue;
448 for (x=big+2,s=little; s < littleend; /**/ ) {
449 if (*s++ != *x++) {
450 s--;
451 break;
452 }
453 }
454 if (s >= littleend)
08105a92 455 return (char*)(big+1);
378cc40b 456 }
a687059c 457 return Nullch;
378cc40b 458}
a687059c 459
bbce6d69 460/*
461 * Set up for a new ctype locale.
462 */
55497cff 463void
ff4fed7c 464Perl_new_ctype(pTHX_ char *newctype)
ef7eada9 465{
36477c24 466#ifdef USE_LOCALE_CTYPE
467
bbce6d69 468 int i;
ef7eada9 469
bbce6d69 470 for (i = 0; i < 256; i++) {
471 if (isUPPER_LC(i))
22c35a8c 472 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 473 else if (isLOWER_LC(i))
22c35a8c 474 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 475 else
22c35a8c 476 PL_fold_locale[i] = i;
bbce6d69 477 }
bbce6d69 478
36477c24 479#endif /* USE_LOCALE_CTYPE */
480}
bbce6d69 481
482/*
ff4fed7c
VK		 483 * Standardize the locale name from a string returned by 'setlocale'.
484 *
485 * The standard return value of setlocale() is either
486 * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
487 * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL
488 * (the space-separated values represent the various sublocales,
489 * in some unspecificed order)
490 *
491 * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n",
492 * which is harmful for further use of the string in setlocale().
493 *
494 */
495STATIC char *
496S_stdize_locale(pTHX_ char *locs)
497{
498 char *s;
499 bool okay = TRUE;
500
501 if ((s = strchr(locs, '='))) {
502 char *t;
503
504 okay = FALSE;
505 if ((t = strchr(s, '.'))) {
506 char *u;
507
508 if ((u = strchr(t, '\n'))) {
509
510 if (u[1] == 0) {
511 STRLEN len = u - s;
a528dad0 512 Move(s + 1, locs, len, char);
ff4fed7c
VK		 513 locs[len] = 0;
514 okay = TRUE;
515 }
516 }
517 }
518 }
519
520 if (!okay)
521 Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
522
523 return locs;
524}
525
526/*
bbce6d69 527 * Set up for a new collation locale.
528 */
529void
ff4fed7c 530Perl_new_collate(pTHX_ char *newcoll)
bbce6d69 531{
36477c24 532#ifdef USE_LOCALE_COLLATE
533
bbce6d69 534 if (! newcoll) {
3280af22 535 if (PL_collation_name) {
9b3a60d0 536 ++PL_collation_ix;
3280af22
NIS		 537 Safefree(PL_collation_name);
538 PL_collation_name = NULL;
bbce6d69 539 }
ff4fed7c
VK		 540 PL_collation_standard = TRUE;
541 PL_collxfrm_base = 0;
542 PL_collxfrm_mult = 2;
bbce6d69 543 return;
544 }
545
3280af22 546 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
9b3a60d0
JH		 547 ++PL_collation_ix;
548 Safefree(PL_collation_name);
549 PL_collation_name = stdize_locale(savepv(newcoll));
3280af22 550 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 551
bbce6d69 552 {
553 /* 2: at most so many chars ('a', 'b'). */
554 /* 50: surely no system expands a char more. */
555#define XFRMBUFSIZE (2 * 50)
556 char xbuf[XFRMBUFSIZE];
557 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
558 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
559 SSize_t mult = fb - fa;
560 if (mult < 1)
cea2e8a9 561 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 562 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
563 PL_collxfrm_mult = mult;
bbce6d69 564 }
bbce6d69 565 }
bbce6d69 566
36477c24 567#endif /* USE_LOCALE_COLLATE */
568}
bbce6d69 569
097ee67d 570void
51371543 571Perl_set_numeric_radix(pTHX)
097ee67d
JH		 572{
573#ifdef USE_LOCALE_NUMERIC
574# ifdef HAS_LOCALECONV
575 struct lconv* lc;
576
577 lc = localeconv();
578 if (lc && lc->decimal_point)
579 /* We assume that decimal separator aka the radix
580 * character is always a single character. If it
581 * ever is a string, this needs to be rethunk. */
582 PL_numeric_radix = *lc->decimal_point;
583 else
584 PL_numeric_radix = 0;
585# endif /* HAS_LOCALECONV */
097ee67d
JH		 586#endif /* USE_LOCALE_NUMERIC */
587}
588
bbce6d69 589/*
590 * Set up for a new numeric locale.
591 */
592void
ff4fed7c 593Perl_new_numeric(pTHX_ char *newnum)
bbce6d69 594{
36477c24 595#ifdef USE_LOCALE_NUMERIC
596
bbce6d69 597 if (! newnum) {
3280af22
NIS		 598 if (PL_numeric_name) {
599 Safefree(PL_numeric_name);
600 PL_numeric_name = NULL;
bbce6d69 601 }
ff4fed7c
VK		 602 PL_numeric_standard = TRUE;
603 PL_numeric_local = TRUE;
bbce6d69 604 return;
605 }
606
3280af22 607 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
9b3a60d0
JH		 608 Safefree(PL_numeric_name);
609 PL_numeric_name = stdize_locale(savepv(newnum));
3280af22
NIS		 610 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
611 PL_numeric_local = TRUE;
51371543 612 set_numeric_radix();
bbce6d69 613 }
36477c24 614
615#endif /* USE_LOCALE_NUMERIC */
bbce6d69 616}
617
618void
864dbfa3 619Perl_set_numeric_standard(pTHX)
bbce6d69 620{
5f05dabc 621#ifdef USE_LOCALE_NUMERIC
622
3280af22 623 if (! PL_numeric_standard) {
bbce6d69 624 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 625 PL_numeric_standard = TRUE;
626 PL_numeric_local = FALSE;
ff4fed7c 627 set_numeric_radix();
bbce6d69 628 }
5f05dabc 629
630#endif /* USE_LOCALE_NUMERIC */
bbce6d69 631}
632
633void
864dbfa3 634Perl_set_numeric_local(pTHX)
bbce6d69 635{
5f05dabc 636#ifdef USE_LOCALE_NUMERIC
637
3280af22
NIS		 638 if (! PL_numeric_local) {
639 setlocale(LC_NUMERIC, PL_numeric_name);
640 PL_numeric_standard = FALSE;
641 PL_numeric_local = TRUE;
51371543 642 set_numeric_radix();
bbce6d69 643 }
bbce6d69 644
36477c24 645#endif /* USE_LOCALE_NUMERIC */
5f05dabc 646}
36477c24 647
36477c24 648/*
649 * Initialize locale awareness.
650 */
f0c5b223 651int
864dbfa3 652Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 653{
654 int ok = 1;
655 /* returns
656 * 1 = set ok or not applicable,
657 * 0 = fallback to C locale,
658 * -1 = fallback to C locale failed
659 */
bbce6d69 660
36477c24 661#ifdef USE_LOCALE
bbce6d69 662
36477c24 663#ifdef USE_LOCALE_CTYPE
bbce6d69 664 char *curctype = NULL;
36477c24 665#endif /* USE_LOCALE_CTYPE */
666#ifdef USE_LOCALE_COLLATE
bbce6d69 667 char *curcoll = NULL;
36477c24 668#endif /* USE_LOCALE_COLLATE */
669#ifdef USE_LOCALE_NUMERIC
bbce6d69 670 char *curnum = NULL;
36477c24 671#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 672#ifdef __GLIBC__
673 char *language = PerlEnv_getenv("LANGUAGE");
674#endif
76e3520e
GS		 675 char *lc_all = PerlEnv_getenv("LC_ALL");
676 char *lang = PerlEnv_getenv("LANG");
bbce6d69 677 bool setlocale_failure = FALSE;
f0c5b223 678
02b32252
CS		 679#ifdef LOCALE_ENVIRON_REQUIRED
680
681 /*
682 * Ultrix setlocale(..., "") fails if there are no environment
683 * variables from which to get a locale name.
684 */
685
686 bool done = FALSE;
687
688#ifdef LC_ALL
689 if (lang) {
690 if (setlocale(LC_ALL, ""))
691 done = TRUE;
692 else
693 setlocale_failure = TRUE;
694 }
0644c9cb 695 if (!setlocale_failure) {
02b32252 696#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 697 if (! (curctype =
698 setlocale(LC_CTYPE,
699 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 700 ? "" : Nullch)))
701 setlocale_failure = TRUE;
f4182098
AB		 702 else
703 curctype = savepv(curctype);
02b32252
CS		 704#endif /* USE_LOCALE_CTYPE */
705#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 706 if (! (curcoll =
707 setlocale(LC_COLLATE,
708 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 709 ? "" : Nullch)))
710 setlocale_failure = TRUE;
f4182098
AB		 711 else
712 curcoll = savepv(curcoll);
02b32252
CS		 713#endif /* USE_LOCALE_COLLATE */
714#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 715 if (! (curnum =
716 setlocale(LC_NUMERIC,
717 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 718 ? "" : Nullch)))
719 setlocale_failure = TRUE;
f4182098
AB		 720 else
721 curnum = savepv(curnum);
02b32252
CS		 722#endif /* USE_LOCALE_NUMERIC */
723 }
724
0644c9cb 725#endif /* LC_ALL */
02b32252 726
0644c9cb 727#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 728
0644c9cb 729#ifdef LC_ALL
bbce6d69 730 if (! setlocale(LC_ALL, ""))
731 setlocale_failure = TRUE;
0644c9cb 732#endif /* LC_ALL */
bbce6d69 733
0644c9cb 734 if (!setlocale_failure) {
36477c24 735#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 736 if (! (curctype = setlocale(LC_CTYPE, "")))
737 setlocale_failure = TRUE;
f4182098
AB		 738 else
739 curctype = savepv(curctype);
36477c24 740#endif /* USE_LOCALE_CTYPE */
741#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 742 if (! (curcoll = setlocale(LC_COLLATE, "")))
743 setlocale_failure = TRUE;
f4182098
AB		 744 else
745 curcoll = savepv(curcoll);
36477c24 746#endif /* USE_LOCALE_COLLATE */
747#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 748 if (! (curnum = setlocale(LC_NUMERIC, "")))
749 setlocale_failure = TRUE;
f4182098
AB		 750 else
751 curnum = savepv(curnum);
36477c24 752#endif /* USE_LOCALE_NUMERIC */
0644c9cb 753 }
02b32252 754
5f05dabc 755 if (setlocale_failure) {
756 char *p;
a1d180c4 757 bool locwarn = (printwarn > 1 ||
155aba94
GS		 758 (printwarn &&
759 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 760
5f05dabc 761 if (locwarn) {
762#ifdef LC_ALL
a1d180c4 763
bf49b057 764 PerlIO_printf(Perl_error_log,
5f05dabc 765 "perl: warning: Setting locale failed.\n");
766
767#else /* !LC_ALL */
a1d180c4 768
bf49b057 769 PerlIO_printf(Perl_error_log,
bbce6d69 770 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 771#ifdef USE_LOCALE_CTYPE
bbce6d69 772 if (! curctype)
bf49b057 773 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 774#endif /* USE_LOCALE_CTYPE */
775#ifdef USE_LOCALE_COLLATE
bbce6d69 776 if (! curcoll)
bf49b057 777 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 778#endif /* USE_LOCALE_COLLATE */
779#ifdef USE_LOCALE_NUMERIC
bbce6d69 780 if (! curnum)
bf49b057 781 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 782#endif /* USE_LOCALE_NUMERIC */
bf49b057 783 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 784
5f05dabc 785#endif /* LC_ALL */
786
bf49b057 787 PerlIO_printf(Perl_error_log,
bbce6d69 788 "perl: warning: Please check that your locale settings:\n");
ef7eada9 789
3aeabbed 790#ifdef __GLIBC__
bf49b057 791 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 792 "\tLANGUAGE = %c%s%c,\n",
793 language ? '"' : '(',
794 language ? language : "unset",
795 language ? '"' : ')');
796#endif
797
bf49b057 798 PerlIO_printf(Perl_error_log,
bbce6d69 799 "\tLC_ALL = %c%s%c,\n",
800 lc_all ? '"' : '(',
801 lc_all ? lc_all : "unset",
802 lc_all ? '"' : ')');
5f05dabc 803
804 {
805 char **e;
806 for (e = environ; *e; e++) {
807 if (strnEQ(*e, "LC_", 3)
808 && strnNE(*e, "LC_ALL=", 7)
809 && (p = strchr(*e, '=')))
bf49b057 810 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 811 (int)(p - *e), *e, p + 1);
5f05dabc 812 }
813 }
814
bf49b057 815 PerlIO_printf(Perl_error_log,
bbce6d69 816 "\tLANG = %c%s%c\n",
5f05dabc 817 lang ? '"' : '(',
bbce6d69 818 lang ? lang : "unset",
819 lang ? '"' : ')');
ef7eada9 820
bf49b057 821 PerlIO_printf(Perl_error_log,
bbce6d69 822 " are supported and installed on your system.\n");
5f05dabc 823 }
ef7eada9 824
5f05dabc 825#ifdef LC_ALL
826
827 if (setlocale(LC_ALL, "C")) {
828 if (locwarn)
bf49b057 829 PerlIO_printf(Perl_error_log,
5f05dabc 830 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 831 ok = 0;
ef7eada9 832 }
5f05dabc 833 else {
834 if (locwarn)
bf49b057 835 PerlIO_printf(Perl_error_log,
5f05dabc 836 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
837 ok = -1;
838 }
bbce6d69 839
5f05dabc 840#else /* ! LC_ALL */
841
842 if (0
36477c24 843#ifdef USE_LOCALE_CTYPE
5f05dabc 844 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 845#endif /* USE_LOCALE_CTYPE */
846#ifdef USE_LOCALE_COLLATE
5f05dabc 847 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 848#endif /* USE_LOCALE_COLLATE */
849#ifdef USE_LOCALE_NUMERIC
5f05dabc 850 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 851#endif /* USE_LOCALE_NUMERIC */
5f05dabc 852 )
853 {
854 if (locwarn)
bf49b057 855 PerlIO_printf(Perl_error_log,
5f05dabc 856 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
857 ok = -1;
bbce6d69 858 }
5f05dabc 859
bbce6d69 860#endif /* ! LC_ALL */
5f05dabc 861
862#ifdef USE_LOCALE_CTYPE
f4182098 863 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc 864#endif /* USE_LOCALE_CTYPE */
865#ifdef USE_LOCALE_COLLATE
f4182098 866 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc 867#endif /* USE_LOCALE_COLLATE */
868#ifdef USE_LOCALE_NUMERIC
f4182098 869 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 870#endif /* USE_LOCALE_NUMERIC */
ef7eada9 871 }
f4182098 872 else {
ef7eada9 873
36477c24 874#ifdef USE_LOCALE_CTYPE
864dbfa3 875 new_ctype(curctype);
36477c24 876#endif /* USE_LOCALE_CTYPE */
bbce6d69 877
36477c24 878#ifdef USE_LOCALE_COLLATE
864dbfa3 879 new_collate(curcoll);
36477c24 880#endif /* USE_LOCALE_COLLATE */
bbce6d69 881
36477c24 882#ifdef USE_LOCALE_NUMERIC
864dbfa3 883 new_numeric(curnum);
36477c24 884#endif /* USE_LOCALE_NUMERIC */
f4182098 885 }
ef7eada9 886
36477c24 887#endif /* USE_LOCALE */
ef7eada9 888
f4182098
AB		 889#ifdef USE_LOCALE_CTYPE
890 if (curctype != NULL)
891 Safefree(curctype);
892#endif /* USE_LOCALE_CTYPE */
893#ifdef USE_LOCALE_COLLATE
894 if (curcoll != NULL)
895 Safefree(curcoll);
896#endif /* USE_LOCALE_COLLATE */
897#ifdef USE_LOCALE_NUMERIC
898 if (curnum != NULL)
899 Safefree(curnum);
900#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB		 901 return ok;
902}
903
bbce6d69 904/* Backwards compatibility. */
905int
864dbfa3 906Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 907{
864dbfa3 908 return init_i18nl10n(printwarn);
bbce6d69 909}
ef7eada9 910
36477c24 911#ifdef USE_LOCALE_COLLATE
ef7eada9 912
bbce6d69 913/*
914 * mem_collxfrm() is a bit like strxfrm() but with two important
915 * differences. First, it handles embedded NULs. Second, it allocates
916 * a bit more memory than needed for the transformed data itself.
917 * The real transformed data begins at offset sizeof(collationix).
918 * Please see sv_collxfrm() to see how this is used.
919 */
920char *
864dbfa3 921Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 922{
923 char *xbuf;
76e3520e 924 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 925
926 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
927 /* the +1 is for the terminating NUL. */
928
3280af22 929 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 930 New(171, xbuf, xAlloc, char);
bbce6d69 931 if (! xbuf)
932 goto bad;
933
3280af22
NIS		 934 *(U32*)xbuf = PL_collation_ix;
935 xout = sizeof(PL_collation_ix);
bbce6d69 936 for (xin = 0; xin < len; ) {
937 SSize_t xused;
938
939 for (;;) {
76e3520e 940 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 941 if (xused == -1)
942 goto bad;
76e3520e 943 if (xused < xAlloc - xout)
bbce6d69 944 break;
76e3520e
GS		 945 xAlloc = (2 * xAlloc) + 1;
946 Renew(xbuf, xAlloc, char);
bbce6d69 947 if (! xbuf)
948 goto bad;
949 }
ef7eada9 950
bbce6d69 951 xin += strlen(s + xin) + 1;
952 xout += xused;
953
954 /* Embedded NULs are understood but silently skipped
955 * because they make no sense in locale collation. */
956 }
ef7eada9 957
bbce6d69 958 xbuf[xout] = '\0';
3280af22 959 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 960 return xbuf;
961
962 bad:
963 Safefree(xbuf);
964 *xlen = 0;
965 return NULL;
ef7eada9
JH		 966}
967
36477c24 968#endif /* USE_LOCALE_COLLATE */
bbce6d69 969
cf93c79d
IZ		 970#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
971
972/* As a space optimization, we do not compile tables for strings of length
973 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
974 special-cased in fbm_instr().
975
976 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
977
954c1994
GS		 978/*
979=for apidoc fbm_compile
980
981Analyses the string in order to make fast searches on it using fbm_instr()
982-- the Boyer-Moore algorithm.
983
984=cut
985*/
986
378cc40b 987void
7506f9c3 988Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 989{
942e002e
GS		 990 register U8 *s;
991 register U8 *table;
79072805 992 register U32 i;
0b71040e 993 STRLEN len;
79072805
LW		 994 I32 rarest = 0;
995 U32 frequency = 256;
996
cf93c79d
IZ		 997 if (flags & FBMcf_TAIL)
998 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 999 s = (U8*)SvPV_force(sv, len);
07f14f54 1000 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 1001 if (len == 0) /* TAIL might be on on a zero-length string. */
1002 return;
02128f11 1003 if (len > 2) {
7506f9c3 1004 U8 mlen;
cf93c79d
IZ		 1005 unsigned char *sb;
1006
7506f9c3 1007 if (len > 255)
cf93c79d 1008 mlen = 255;
7506f9c3
GS		 1009 else
1010 mlen = (U8)len;
1011 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 1012 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 1013 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
1014 memset((void*)table, mlen, 256);
1015 table[-1] = (U8)flags;
02128f11 1016 i = 0;
7506f9c3 1017 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 1018 while (s >= sb) {
1019 if (table[*s] == mlen)
7506f9c3 1020 table[*s] = (U8)i;
cf93c79d
IZ		 1021 s--, i++;
1022 }
378cc40b 1023 }
bbce6d69 1024 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 1025 SvVALID_on(sv);
378cc40b 1026
463ee0b2 1027 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 1028 for (i = 0; i < len; i++) {
22c35a8c 1029 if (PL_freq[s[i]] < frequency) {
bbce6d69 1030 rarest = i;
22c35a8c 1031 frequency = PL_freq[s[i]];
378cc40b
LW		 1032 }
1033 }
79072805
LW		 1034 BmRARE(sv) = s[rarest];
1035 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 1036 BmUSEFUL(sv) = 100; /* Initial value */
1037 if (flags & FBMcf_TAIL)
1038 SvTAIL_on(sv);
7506f9c3
GS		 1039 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1040 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 1041}
1042
cf93c79d
IZ		 1043/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1044/* If SvTAIL is actually due to \Z or \z, this gives false positives
1045 if multiline */
1046
954c1994
GS		 1047/*
1048=for apidoc fbm_instr
1049
1050Returns the location of the SV in the string delimited by C<str> and
1051C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1052does not have to be fbm_compiled, but the search will not be as fast
1053then.
1054
1055=cut
1056*/
1057
378cc40b 1058char *
864dbfa3 1059Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1060{
a687059c 1061 register unsigned char *s;
cf93c79d
IZ		 1062 STRLEN l;
1063 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1064 register STRLEN littlelen = l;
1065 register I32 multiline = flags & FBMrf_MULTILINE;
1066
1067 if (bigend - big < littlelen) {
a1d180c4 1068 if ( SvTAIL(littlestr)
cf93c79d 1069 && (bigend - big == littlelen - 1)
a1d180c4 1070 && (littlelen == 1
12ae5dfc
JH		 1071 || (*big == *little &&
1072 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1073 return (char*)big;
1074 return Nullch;
1075 }
378cc40b 1076
cf93c79d 1077 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1078
1079 if (littlelen == 1) {
1080 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1081 /* Know that bigend != big. */
1082 if (bigend[-1] == '\n')
1083 return (char *)(bigend - 1);
1084 return (char *) bigend;
1085 }
1086 s = big;
1087 while (s < bigend) {
1088 if (*s == *little)
1089 return (char *)s;
1090 s++;
1091 }
1092 if (SvTAIL(littlestr))
1093 return (char *) bigend;
1094 return Nullch;
1095 }
1096 if (!littlelen)
1097 return (char*)big; /* Cannot be SvTAIL! */
1098
1099 /* littlelen is 2 */
1100 if (SvTAIL(littlestr) && !multiline) {
1101 if (bigend[-1] == '\n' && bigend[-2] == *little)
1102 return (char*)bigend - 2;
1103 if (bigend[-1] == *little)
1104 return (char*)bigend - 1;
1105 return Nullch;
1106 }
1107 {
1108 /* This should be better than FBM if c1 == c2, and almost
1109 as good otherwise: maybe better since we do less indirection.
1110 And we save a lot of memory by caching no table. */
1111 register unsigned char c1 = little[0];
1112 register unsigned char c2 = little[1];
1113
1114 s = big + 1;
1115 bigend--;
1116 if (c1 != c2) {
1117 while (s <= bigend) {
1118 if (s[0] == c2) {
1119 if (s[-1] == c1)
1120 return (char*)s - 1;
1121 s += 2;
1122 continue;
3fe6f2dc 1123 }
cf93c79d
IZ		 1124 next_chars:
1125 if (s[0] == c1) {
1126 if (s == bigend)
1127 goto check_1char_anchor;
1128 if (s[1] == c2)
1129 return (char*)s;
1130 else {
1131 s++;
1132 goto next_chars;
1133 }
1134 }
1135 else
1136 s += 2;
1137 }
1138 goto check_1char_anchor;
1139 }
1140 /* Now c1 == c2 */
1141 while (s <= bigend) {
1142 if (s[0] == c1) {
1143 if (s[-1] == c1)
1144 return (char*)s - 1;
1145 if (s == bigend)
1146 goto check_1char_anchor;
1147 if (s[1] == c1)
1148 return (char*)s;
1149 s += 3;
02128f11 1150 }
c277df42 1151 else
cf93c79d 1152 s += 2;
c277df42 1153 }
c277df42 1154 }
cf93c79d
IZ		 1155 check_1char_anchor: /* One char and anchor! */
1156 if (SvTAIL(littlestr) && (*bigend == *little))
1157 return (char *)bigend; /* bigend is already decremented. */
1158 return Nullch;
d48672a2 1159 }
cf93c79d 1160 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1161 s = bigend - littlelen;
a1d180c4 1162 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1163 /* Automatically of length > 2 */
1164 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1165 {
bbce6d69 1166 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1167 }
1168 if (s[1] == *little
1169 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1170 {
cf93c79d 1171 return (char*)s + 1; /* how sweet it is */
7506f9c3 1172 }
02128f11
IZ		 1173 return Nullch;
1174 }
cf93c79d
IZ		 1175 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1176 char *b = ninstr((char*)big,(char*)bigend,
1177 (char*)little, (char*)little + littlelen);
1178
1179 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1180 /* Chop \n from littlestr: */
1181 s = bigend - littlelen + 1;
7506f9c3
GS		 1182 if (*s == *little
1183 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1184 {
3fe6f2dc 1185 return (char*)s;
7506f9c3 1186 }
cf93c79d 1187 return Nullch;
a687059c 1188 }
cf93c79d 1189 return b;
a687059c 1190 }
a1d180c4 1191
cf93c79d
IZ		 1192 { /* Do actual FBM. */
1193 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1194 register unsigned char *oldlittle;
1195
1196 if (littlelen > bigend - big)
1197 return Nullch;
1198 --littlelen; /* Last char found by table lookup */
1199
1200 s = big + littlelen;
1201 little += littlelen; /* last char */
1202 oldlittle = little;
1203 if (s < bigend) {
1204 register I32 tmp;
1205
1206 top2:
1207 /*SUPPRESS 560*/
7506f9c3 1208 if ((tmp = table[*s])) {
62b28dd9 1209#ifdef POINTERRIGOR
cf93c79d
IZ		 1210 if (bigend - s > tmp) {
1211 s += tmp;
1212 goto top2;
1213 }
bbce6d69 1214 s += tmp;
62b28dd9 1215#else
cf93c79d 1216 if ((s += tmp) < bigend)
62b28dd9 1217 goto top2;
cf93c79d
IZ		 1218#endif
1219 goto check_end;
1220 }
1221 else { /* less expensive than calling strncmp() */
1222 register unsigned char *olds = s;
1223
1224 tmp = littlelen;
1225
1226 while (tmp--) {
1227 if (*--s == *--little)
1228 continue;
cf93c79d
IZ		 1229 s = olds + 1; /* here we pay the price for failure */
1230 little = oldlittle;
1231 if (s < bigend) /* fake up continue to outer loop */
1232 goto top2;
1233 goto check_end;
1234 }
1235 return (char *)s;
a687059c 1236 }
378cc40b 1237 }
cf93c79d
IZ		 1238 check_end:
1239 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1240 && memEQ((char *)(bigend - littlelen),
1241 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1242 return (char*)bigend - littlelen;
1243 return Nullch;
378cc40b 1244 }
378cc40b
LW		 1245}
1246
c277df42
IZ		 1247/* start_shift, end_shift are positive quantities which give offsets
1248 of ends of some substring of bigstr.
1249 If `last' we want the last occurence.
1250 old_posp is the way of communication between consequent calls if
a1d180c4 1251 the next call needs to find the .
c277df42 1252 The initial *old_posp should be -1.
cf93c79d
IZ		 1253
1254 Note that we take into account SvTAIL, so one can get extra
1255 optimizations if _ALL flag is set.
c277df42
IZ		 1256 */
1257
cf93c79d
IZ		 1258/* If SvTAIL is actually due to \Z or \z, this gives false positives
1259 if PL_multiline. In fact if !PL_multiline the autoritative answer
1260 is not supported yet. */
1261
378cc40b 1262char *
864dbfa3 1263Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1264{
a687059c
LW		 1265 register unsigned char *s, *x;
1266 register unsigned char *big;
79072805
LW		 1267 register I32 pos;
1268 register I32 previous;
1269 register I32 first;
a687059c 1270 register unsigned char *little;
c277df42 1271 register I32 stop_pos;
a687059c 1272 register unsigned char *littleend;
c277df42 1273 I32 found = 0;
378cc40b 1274
c277df42 1275 if (*old_posp == -1
3280af22 1276 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1277 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1278 cant_find:
a1d180c4 1279 if ( BmRARE(littlestr) == '\n'
cf93c79d
IZ		 1280 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1281 little = (unsigned char *)(SvPVX(littlestr));
1282 littleend = little + SvCUR(littlestr);
1283 first = *little++;
1284 goto check_tail;
1285 }
378cc40b 1286 return Nullch;
cf93c79d
IZ		 1287 }
1288
463ee0b2 1289 little = (unsigned char *)(SvPVX(littlestr));
79072805 1290 littleend = little + SvCUR(littlestr);
378cc40b 1291 first = *little++;
c277df42 1292 /* The value of pos we can start at: */
79072805 1293 previous = BmPREVIOUS(littlestr);
463ee0b2 1294 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1295 /* The value of pos we can stop at: */
1296 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1297 if (previous + start_shift > stop_pos) {
1298 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1299 goto check_tail;
1300 return Nullch;
1301 }
c277df42 1302 while (pos < previous + start_shift) {
3280af22 1303 if (!(pos += PL_screamnext[pos]))
cf93c79d 1304 goto cant_find;
378cc40b 1305 }
de3bb511 1306#ifdef POINTERRIGOR
bbce6d69 1307 do {
ef64f398 1308 if (pos >= stop_pos) break;
bbce6d69 1309 if (big[pos-previous] != first)
1310 continue;
1311 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1312 if (*s++ != *x++) {
1313 s--;
1314 break;
de3bb511 1315 }
bbce6d69 1316 }
c277df42
IZ		 1317 if (s == littleend) {
1318 *old_posp = pos;
1319 if (!last) return (char *)(big+pos-previous);
1320 found = 1;
1321 }
6b88bc9c 1322 } while ( pos += PL_screamnext[pos] );
c277df42 1323 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1324#else /* !POINTERRIGOR */
1325 big -= previous;
bbce6d69 1326 do {
ef64f398 1327 if (pos >= stop_pos) break;
bbce6d69 1328 if (big[pos] != first)
1329 continue;
1330 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1331 if (*s++ != *x++) {
1332 s--;
1333 break;
378cc40b 1334 }
bbce6d69 1335 }
c277df42
IZ		 1336 if (s == littleend) {
1337 *old_posp = pos;
1338 if (!last) return (char *)(big+pos);
1339 found = 1;
1340 }
3280af22 1341 } while ( pos += PL_screamnext[pos] );
a1d180c4 1342 if (last && found)
cf93c79d 1343 return (char *)(big+(*old_posp));
de3bb511 1344#endif /* POINTERRIGOR */
cf93c79d
IZ		 1345 check_tail:
1346 if (!SvTAIL(littlestr) || (end_shift > 0))
1347 return Nullch;
1348 /* Ignore the trailing "\n". This code is not microoptimized */
1349 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1350 stop_pos = littleend - little; /* Actual littlestr len */
1351 if (stop_pos == 0)
1352 return (char*)big;
1353 big -= stop_pos;
1354 if (*big == first
12ae5dfc
JH		 1355 && ((stop_pos == 1) ||
1356 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1357 return (char*)big;
1358 return Nullch;
8d063cd8
LW		 1359}
1360
79072805 1361I32
864dbfa3 1362Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1363{
bbce6d69 1364 register U8 *a = (U8 *)s1;
1365 register U8 *b = (U8 *)s2;
79072805 1366 while (len--) {
22c35a8c 1367 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1368 return 1;
1369 a++,b++;
1370 }
1371 return 0;
1372}
1373
1374I32
864dbfa3 1375Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1376{
1377 register U8 *a = (U8 *)s1;
1378 register U8 *b = (U8 *)s2;
1379 while (len--) {
22c35a8c 1380 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1381 return 1;
1382 a++,b++;
79072805
LW		 1383 }
1384 return 0;
1385}
1386
8d063cd8
LW		 1387/* copy a string to a safe spot */
1388
954c1994
GS		 1389/*
1390=for apidoc savepv
1391
1392Copy a string to a safe spot. This does not use an SV.
1393
1394=cut
1395*/
1396
8d063cd8 1397char *
864dbfa3 1398Perl_savepv(pTHX_ const char *sv)
8d063cd8 1399{
a687059c 1400 register char *newaddr;
8d063cd8 1401
79072805
LW		 1402 New(902,newaddr,strlen(sv)+1,char);
1403 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1404 return newaddr;
1405}
1406
a687059c
LW		 1407/* same thing but with a known length */
1408
954c1994
GS		 1409/*
1410=for apidoc savepvn
1411
1412Copy a string to a safe spot. The C<len> indicates number of bytes to
1413copy. This does not use an SV.
1414
1415=cut
1416*/
1417
a687059c 1418char *
864dbfa3 1419Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1420{
1421 register char *newaddr;
1422
1423 New(903,newaddr,len+1,char);
79072805 1424 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1425 newaddr[len] = '\0'; /* is now */
1426 return newaddr;
1427}
1428
cea2e8a9 1429/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1430
76e3520e 1431STATIC SV *
cea2e8a9 1432S_mess_alloc(pTHX)
fc36a67e 1433{
1434 SV *sv;
1435 XPVMG *any;
1436
e72dc28c
GS		 1437 if (!PL_dirty)
1438 return sv_2mortal(newSVpvn("",0));
1439
0372dbb6
GS		 1440 if (PL_mess_sv)
1441 return PL_mess_sv;
1442
fc36a67e 1443 /* Create as PVMG now, to avoid any upgrading later */
1444 New(905, sv, 1, SV);
1445 Newz(905, any, 1, XPVMG);
1446 SvFLAGS(sv) = SVt_PVMG;
1447 SvANY(sv) = (void*)any;
1448 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1449 PL_mess_sv = sv;
fc36a67e 1450 return sv;
1451}
1452
c5be433b 1453#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1454char *
1455Perl_form_nocontext(const char* pat, ...)
1456{
1457 dTHX;
c5be433b 1458 char *retval;
cea2e8a9
GS		 1459 va_list args;
1460 va_start(args, pat);
c5be433b 1461 retval = vform(pat, &args);
cea2e8a9 1462 va_end(args);
c5be433b 1463 return retval;
cea2e8a9 1464}
c5be433b 1465#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1466
8990e307 1467char *
864dbfa3 1468Perl_form(pTHX_ const char* pat, ...)
8990e307 1469{
c5be433b 1470 char *retval;
46fc3d4c 1471 va_list args;
46fc3d4c 1472 va_start(args, pat);
c5be433b 1473 retval = vform(pat, &args);
46fc3d4c 1474 va_end(args);
c5be433b
GS		 1475 return retval;
1476}
1477
1478char *
1479Perl_vform(pTHX_ const char *pat, va_list *args)
1480{
1481 SV *sv = mess_alloc();
1482 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1483 return SvPVX(sv);
46fc3d4c 1484}
a687059c 1485
5a844595
GS		 1486#if defined(PERL_IMPLICIT_CONTEXT)
1487SV *
1488Perl_mess_nocontext(const char *pat, ...)
1489{
1490 dTHX;
1491 SV *retval;
1492 va_list args;
1493 va_start(args, pat);
1494 retval = vmess(pat, &args);
1495 va_end(args);
1496 return retval;
1497}
1498#endif /* PERL_IMPLICIT_CONTEXT */
1499
06bf62c7 1500SV *
5a844595
GS		 1501Perl_mess(pTHX_ const char *pat, ...)
1502{
1503 SV *retval;
1504 va_list args;
1505 va_start(args, pat);
1506 retval = vmess(pat, &args);
1507 va_end(args);
1508 return retval;
1509}
1510
1511SV *
1512Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1513{
e72dc28c 1514 SV *sv = mess_alloc();
46fc3d4c 1515 static char dgd[] = " during global destruction.\n";
1516
fc36a67e 1517 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1518 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
57843af0 1519 if (CopLINE(PL_curcop))
ed094faf
GS		 1520 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1521 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1522 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1523 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1524 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1525 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6 1526 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
a1d180c4 1527 line_mode ? "line" : "chunk",
cf2093f6 1528 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1529 }
9efbc0eb 1530#ifdef USE_THREADS
e8e6f333
GS		 1531 if (thr->tid)
1532 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1533#endif
515f54a1 1534 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1535 }
06bf62c7 1536 return sv;
a687059c
LW		 1537}
1538
c5be433b
GS		 1539OP *
1540Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1541{
36477c24 1542 char *message;
3280af22 1543 int was_in_eval = PL_in_eval;
36477c24 1544 HV *stash;
1545 GV *gv;
1546 CV *cv;
06bf62c7
GS		 1547 SV *msv;
1548 STRLEN msglen;
36477c24 1549
bf49b057 1550 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1551 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1552 thr, PL_curstack, PL_mainstack));
36477c24 1553
06bf62c7 1554 if (pat) {
5a844595
GS		 1555 msv = vmess(pat, args);
1556 if (PL_errors && SvCUR(PL_errors)) {
1557 sv_catsv(PL_errors, msv);
1558 message = SvPV(PL_errors, msglen);
1559 SvCUR_set(PL_errors, 0);
1560 }
1561 else
1562 message = SvPV(msv,msglen);
06bf62c7
GS		 1563 }
1564 else {
1565 message = Nullch;
0f79a09d 1566 msglen = 0;
06bf62c7 1567 }
36477c24 1568
bf49b057 1569 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1570 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1571 thr, message, PL_diehook));
3280af22 1572 if (PL_diehook) {
cea2e8a9 1573 /* sv_2cv might call Perl_croak() */
3280af22 1574 SV *olddiehook = PL_diehook;
1738f5c4 1575 ENTER;
3280af22
NIS		 1576 SAVESPTR(PL_diehook);
1577 PL_diehook = Nullsv;
1738f5c4
CS		 1578 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1579 LEAVE;
1580 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1581 dSP;
774d564b 1582 SV *msg;
1583
1584 ENTER;
3a1f2dc9 1585 save_re_context();
79cb57f6 1586 if (message) {
06bf62c7 1587 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1588 SvREADONLY_on(msg);
1589 SAVEFREESV(msg);
1590 }
1591 else {
1592 msg = ERRSV;
1593 }
1738f5c4 1594
e788e7d3 1595 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1596 PUSHMARK(SP);
1738f5c4
CS		 1597 XPUSHs(msg);
1598 PUTBACK;
0cdb2077 1599 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1600 POPSTACK;
774d564b 1601 LEAVE;
1738f5c4 1602 }
36477c24 1603 }
1604
06bf62c7 1605 PL_restartop = die_where(message, msglen);
bf49b057 1606 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1607 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1608 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1609 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1610 JMPENV_JUMP(3);
3280af22 1611 return PL_restartop;
36477c24 1612}
1613
c5be433b 1614#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1615OP *
1616Perl_die_nocontext(const char* pat, ...)
a687059c 1617{
cea2e8a9
GS		 1618 dTHX;
1619 OP *o;
a687059c 1620 va_list args;
cea2e8a9 1621 va_start(args, pat);
c5be433b 1622 o = vdie(pat, &args);
cea2e8a9
GS		 1623 va_end(args);
1624 return o;
1625}
c5be433b 1626#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1627
1628OP *
1629Perl_die(pTHX_ const char* pat, ...)
1630{
1631 OP *o;
1632 va_list args;
1633 va_start(args, pat);
c5be433b 1634 o = vdie(pat, &args);
cea2e8a9
GS		 1635 va_end(args);
1636 return o;
1637}
1638
c5be433b
GS		 1639void
1640Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9 1641{
de3bb511 1642 char *message;
748a9306
LW		 1643 HV *stash;
1644 GV *gv;
1645 CV *cv;
06bf62c7
GS		 1646 SV *msv;
1647 STRLEN msglen;
a687059c 1648
9983fa3c
GS		 1649 if (pat) {
1650 msv = vmess(pat, args);
1651 if (PL_errors && SvCUR(PL_errors)) {
1652 sv_catsv(PL_errors, msv);
1653 message = SvPV(PL_errors, msglen);
1654 SvCUR_set(PL_errors, 0);
1655 }
1656 else
1657 message = SvPV(msv,msglen);
1658 }
1659 else {
1660 message = Nullch;
1661 msglen = 0;
5a844595 1662 }
5a844595 1663
b900a521
JH		 1664 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1665 PTR2UV(thr), message));
5a844595 1666
3280af22 1667 if (PL_diehook) {
cea2e8a9 1668 /* sv_2cv might call Perl_croak() */
3280af22 1669 SV *olddiehook = PL_diehook;
1738f5c4 1670 ENTER;
3280af22
NIS		 1671 SAVESPTR(PL_diehook);
1672 PL_diehook = Nullsv;
20cec16a 1673 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1674 LEAVE;
1675 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1676 dSP;
774d564b 1677 SV *msg;
1678
1679 ENTER;
3a1f2dc9 1680 save_re_context();
9983fa3c
GS		 1681 if (message) {
1682 msg = newSVpvn(message, msglen);
1683 SvREADONLY_on(msg);
1684 SAVEFREESV(msg);
1685 }
1686 else {
1687 msg = ERRSV;
1688 }
20cec16a 1689
e788e7d3 1690 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1691 PUSHMARK(SP);
1738f5c4 1692 XPUSHs(msg);
20cec16a 1693 PUTBACK;
864dbfa3 1694 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1695 POPSTACK;
774d564b 1696 LEAVE;
20cec16a 1697 }
748a9306 1698 }
3280af22 1699 if (PL_in_eval) {
06bf62c7 1700 PL_restartop = die_where(message, msglen);
6224f72b 1701 JMPENV_JUMP(3);
a0d0e21e 1702 }
d175a3f0
GS		 1703 {
1704#ifdef USE_SFIO
1705 /* SFIO can really mess with your errno */
1706 int e = errno;
1707#endif
bf49b057
GS		 1708 PerlIO *serr = Perl_error_log;
1709
1710 PerlIO_write(serr, message, msglen);
1711 (void)PerlIO_flush(serr);
d175a3f0
GS		 1712#ifdef USE_SFIO
1713 errno = e;
1714#endif
1715 }
f86702cc 1716 my_failure_exit();
a687059c
LW		 1717}
1718
c5be433b 1719#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1720void
cea2e8a9 1721Perl_croak_nocontext(const char *pat, ...)
a687059c 1722{
cea2e8a9 1723 dTHX;
a687059c 1724 va_list args;
cea2e8a9 1725 va_start(args, pat);
c5be433b 1726 vcroak(pat, &args);
cea2e8a9
GS		 1727 /* NOTREACHED */
1728 va_end(args);
1729}
1730#endif /* PERL_IMPLICIT_CONTEXT */
1731
954c1994
GS		 1732/*
1733=for apidoc croak
1734
9983fa3c
GS		 1735This is the XSUB-writer's interface to Perl's C<die> function.
1736Normally use this function the same way you use the C C<printf>
1737function. See C<warn>.
1738
1739If you want to throw an exception object, assign the object to
1740C<$@> and then pass C<Nullch> to croak():
1741
1742 errsv = get_sv("@", TRUE);
1743 sv_setsv(errsv, exception_object);
1744 croak(Nullch);
954c1994
GS		 1745
1746=cut
1747*/
1748
cea2e8a9
GS		 1749void
1750Perl_croak(pTHX_ const char *pat, ...)
1751{
1752 va_list args;
1753 va_start(args, pat);
c5be433b 1754 vcroak(pat, &args);
cea2e8a9
GS		 1755 /* NOTREACHED */
1756 va_end(args);
1757}
1758
c5be433b
GS		 1759void
1760Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1761{
de3bb511 1762 char *message;
748a9306
LW		 1763 HV *stash;
1764 GV *gv;
1765 CV *cv;
06bf62c7
GS		 1766 SV *msv;
1767 STRLEN msglen;
a687059c 1768
5a844595 1769 msv = vmess(pat, args);
06bf62c7 1770 message = SvPV(msv, msglen);
a687059c 1771
3280af22 1772 if (PL_warnhook) {
cea2e8a9 1773 /* sv_2cv might call Perl_warn() */
3280af22 1774 SV *oldwarnhook = PL_warnhook;
1738f5c4 1775 ENTER;
3280af22
NIS		 1776 SAVESPTR(PL_warnhook);
1777 PL_warnhook = Nullsv;
20cec16a 1778 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1779 LEAVE;
1780 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1781 dSP;
774d564b 1782 SV *msg;
1783
1784 ENTER;
3a1f2dc9 1785 save_re_context();
06bf62c7 1786 msg = newSVpvn(message, msglen);
774d564b 1787 SvREADONLY_on(msg);
1788 SAVEFREESV(msg);
1789
e788e7d3 1790 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1791 PUSHMARK(SP);
774d564b 1792 XPUSHs(msg);
20cec16a 1793 PUTBACK;
864dbfa3 1794 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1795 POPSTACK;
774d564b 1796 LEAVE;
20cec16a 1797 return;
1798 }
748a9306 1799 }
bf49b057
GS		 1800 {
1801 PerlIO *serr = Perl_error_log;
1802
1803 PerlIO_write(serr, message, msglen);
a687059c 1804#ifdef LEAKTEST
a1d180c4 1805 DEBUG_L(*message == '!'
bf49b057
GS		 1806 ? (xstat(message[1]=='!'
1807 ? (message[2]=='!' ? 2 : 1)
1808 : 0)
1809 , 0)
1810 : 0);
a687059c 1811#endif
bf49b057
GS		 1812 (void)PerlIO_flush(serr);
1813 }
a687059c 1814}
8d063cd8 1815
c5be433b 1816#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1817void
1818Perl_warn_nocontext(const char *pat, ...)
1819{
1820 dTHX;
1821 va_list args;
1822 va_start(args, pat);
c5be433b 1823 vwarn(pat, &args);
cea2e8a9
GS		 1824 va_end(args);
1825}
1826#endif /* PERL_IMPLICIT_CONTEXT */
1827
954c1994
GS		 1828/*
1829=for apidoc warn
1830
1831This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1832function the same way you use the C C<printf> function. See
1833C<croak>.
1834
1835=cut
1836*/
1837
cea2e8a9
GS		 1838void
1839Perl_warn(pTHX_ const char *pat, ...)
1840{
1841 va_list args;
1842 va_start(args, pat);
c5be433b 1843 vwarn(pat, &args);
cea2e8a9
GS		 1844 va_end(args);
1845}
1846
c5be433b
GS		 1847#if defined(PERL_IMPLICIT_CONTEXT)
1848void
1849Perl_warner_nocontext(U32 err, const char *pat, ...)
1850{
1851 dTHX;
1852 va_list args;
1853 va_start(args, pat);
1854 vwarner(err, pat, &args);
1855 va_end(args);
1856}
1857#endif /* PERL_IMPLICIT_CONTEXT */
1858
599cee73 1859void
864dbfa3 1860Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1861{
1862 va_list args;
c5be433b
GS		 1863 va_start(args, pat);
1864 vwarner(err, pat, &args);
1865 va_end(args);
1866}
1867
1868void
1869Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1870{
599cee73
PM		 1871 char *message;
1872 HV *stash;
1873 GV *gv;
1874 CV *cv;
06bf62c7
GS		 1875 SV *msv;
1876 STRLEN msglen;
599cee73 1877
5a844595 1878 msv = vmess(pat, args);
06bf62c7 1879 message = SvPV(msv, msglen);
599cee73
PM		 1880
1881 if (ckDEAD(err)) {
1882#ifdef USE_THREADS
b900a521 1883 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1884#endif /* USE_THREADS */
1885 if (PL_diehook) {
cea2e8a9 1886 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1887 SV *olddiehook = PL_diehook;
1888 ENTER;
1889 SAVESPTR(PL_diehook);
1890 PL_diehook = Nullsv;
1891 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1892 LEAVE;
1893 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1894 dSP;
1895 SV *msg;
a1d180c4 1896
599cee73 1897 ENTER;
3a1f2dc9 1898 save_re_context();
06bf62c7 1899 msg = newSVpvn(message, msglen);
599cee73
PM		 1900 SvREADONLY_on(msg);
1901 SAVEFREESV(msg);
a1d180c4 1902
3a1f2dc9 1903 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1904 PUSHMARK(sp);
1905 XPUSHs(msg);
1906 PUTBACK;
864dbfa3 1907 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1908 POPSTACK;
599cee73
PM		 1909 LEAVE;
1910 }
1911 }
1912 if (PL_in_eval) {
06bf62c7 1913 PL_restartop = die_where(message, msglen);
599cee73
PM		 1914 JMPENV_JUMP(3);
1915 }
bf49b057
GS		 1916 {
1917 PerlIO *serr = Perl_error_log;
1918 PerlIO_write(serr, message, msglen);
1919 (void)PerlIO_flush(serr);
1920 }
599cee73
PM		 1921 my_failure_exit();
1922
1923 }
1924 else {
1925 if (PL_warnhook) {
cea2e8a9 1926 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1927 SV *oldwarnhook = PL_warnhook;
1928 ENTER;
1929 SAVESPTR(PL_warnhook);
1930 PL_warnhook = Nullsv;
1931 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1932 LEAVE;
599cee73
PM		 1933 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1934 dSP;
1935 SV *msg;
a1d180c4 1936
599cee73 1937 ENTER;
3a1f2dc9 1938 save_re_context();
06bf62c7 1939 msg = newSVpvn(message, msglen);
599cee73
PM		 1940 SvREADONLY_on(msg);
1941 SAVEFREESV(msg);
a1d180c4 1942
3a1f2dc9 1943 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1944 PUSHMARK(sp);
1945 XPUSHs(msg);
1946 PUTBACK;
864dbfa3 1947 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1948 POPSTACK;
599cee73
PM		 1949 LEAVE;
1950 return;
1951 }
1952 }
bf49b057
GS		 1953 {
1954 PerlIO *serr = Perl_error_log;
1955 PerlIO_write(serr, message, msglen);
599cee73 1956#ifdef LEAKTEST
a1d180c4 1957 DEBUG_L(*message == '!'
06247ec9
JH		 1958 ? (xstat(message[1]=='!'
1959 ? (message[2]=='!' ? 2 : 1)
1960 : 0)
1961 , 0)
1962 : 0);
599cee73 1963#endif
bf49b057
GS		 1964 (void)PerlIO_flush(serr);
1965 }
599cee73
PM		 1966 }
1967}
1968
13b6e58c
JH		 1969#ifdef USE_ENVIRON_ARRAY
1970 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
47dafe4d 1971#if !defined(WIN32)
8d063cd8 1972void
864dbfa3 1973Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1974{
f2517201
GS		 1975#ifndef PERL_USE_SAFE_PUTENV
1976 /* most putenv()s leak, so we manipulate environ directly */
79072805 1977 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1978
3280af22 1979 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1980 I32 j;
1981 I32 max;
fe14fcc3
LW		 1982 char **tmpenv;
1983
de3bb511 1984 /*SUPPRESS 530*/
fe14fcc3 1985 for (max = i; environ[max]; max++) ;
f2517201
GS		 1986 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1987 for (j=0; j<max; j++) { /* copy environment */
1988 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1989 strcpy(tmpenv[j], environ[j]);
1990 }
fe14fcc3
LW		 1991 tmpenv[max] = Nullch;
1992 environ = tmpenv; /* tell exec where it is now */
1993 }
a687059c 1994 if (!val) {
f2517201 1995 safesysfree(environ[i]);
a687059c
LW		 1996 while (environ[i]) {
1997 environ[i] = environ[i+1];
1998 i++;
1999 }
2000 return;
2001 }
8d063cd8 2002 if (!environ[i]) { /* does not exist yet */
f2517201 2003 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 2004 environ[i+1] = Nullch; /* make sure it's null terminated */
2005 }
fe14fcc3 2006 else
f2517201
GS		 2007 safesysfree(environ[i]);
2008 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
2009
a687059c 2010 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 2011
2012#else /* PERL_USE_SAFE_PUTENV */
47dafe4d
EF		 2013# if defined(__CYGWIN__)
2014 setenv(nam, val, 1);
2015# else
f2517201
GS		 2016 char *new_env;
2017
2018 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 2019 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201 2020 (void)putenv(new_env);
47dafe4d 2021# endif /* __CYGWIN__ */
f2517201 2022#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 2023}
2024
47dafe4d 2025#else /* WIN32 */
68dc0745 2026
2027void
864dbfa3 2028Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2029{
3e3baf6d
TB		 2030
2031#ifdef USE_WIN32_RTL_ENV
2032
68dc0745 2033 register char *envstr;
2034 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 2035 STRLEN vallen;
2036 char *oldstr = environ[setenv_getix(nam)];
2037
2038 /* putenv() has totally broken semantics in both the Borland
2039 * and Microsoft CRTLs. They either store the passed pointer in
2040 * the environment without making a copy, or make a copy and don't
2041 * free it. And on top of that, they dont free() old entries that
2042 * are being replaced/deleted. This means the caller must
2043 * free any old entries somehow, or we end up with a memory
2044 * leak every time my_setenv() is called. One might think
2045 * one could directly manipulate environ[], like the UNIX code
2046 * above, but direct changes to environ are not allowed when
2047 * calling putenv(), since the RTLs maintain an internal
2048 * *copy* of environ[]. Bad, bad, *bad* stink.
2049 * GSAR 97-06-07
2050 */
68dc0745 2051
3e3baf6d
TB		 2052 if (!val) {
2053 if (!oldstr)
2054 return;
2055 val = "";
2056 vallen = 0;
2057 }
2058 else
2059 vallen = strlen(val);
f2517201 2060 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2061 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2062 (void)PerlEnv_putenv(envstr);
3e3baf6d 2063 if (oldstr)
f2517201 2064 safesysfree(oldstr);
3e3baf6d 2065#ifdef _MSC_VER
f2517201 2066 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2067#endif
2068
2069#else /* !USE_WIN32_RTL_ENV */
2070
ac5c734f
GS		 2071 register char *envstr;
2072 STRLEN len = strlen(nam) + 3;
2073 if (!val) {
2074 val = "";
2075 }
2076 len += strlen(val);
2077 New(904, envstr, len, char);
2078 (void)sprintf(envstr,"%s=%s",nam,val);
2079 (void)PerlEnv_putenv(envstr);
2080 Safefree(envstr);
3e3baf6d
TB		 2081
2082#endif
2083}
2084
2085#endif /* WIN32 */
2086
2087I32
864dbfa3 2088Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2089{
2090 register I32 i, len = strlen(nam);
2091
2092 for (i = 0; environ[i]; i++) {
2093 if (
2094#ifdef WIN32
2095 strnicmp(environ[i],nam,len) == 0
2096#else
2097 strnEQ(environ[i],nam,len)
2098#endif
2099 && environ[i][len] == '=')
2100 break; /* strnEQ must come first to avoid */
2101 } /* potential SEGV's */
2102 return i;
68dc0745 2103}
2104
ed79a026 2105#endif /* !VMS && !EPOC*/
378cc40b 2106
16d20bd9 2107#ifdef UNLINK_ALL_VERSIONS
79072805 2108I32
864dbfa3 2109Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2110{
79072805 2111 I32 i;
378cc40b 2112
6ad3d225 2113 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2114 return i ? 0 : -1;
2115}
2116#endif
2117
7a3f2258 2118/* this is a drop-in replacement for bcopy() */
85e6fe83 2119#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2120char *
7a3f2258 2121Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2122{
2123 char *retval = to;
2124
7c0587c8
LW		 2125 if (from - to >= 0) {
2126 while (len--)
2127 *to++ = *from++;
2128 }
2129 else {
2130 to += len;
2131 from += len;
2132 while (len--)
faf8582f 2133 *(--to) = *(--from);
7c0587c8 2134 }
378cc40b
LW		 2135 return retval;
2136}
ffed7fef 2137#endif
378cc40b 2138
7a3f2258 2139/* this is a drop-in replacement for memset() */
fc36a67e 2140#ifndef HAS_MEMSET
2141void *
7a3f2258 2142Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2143{
2144 char *retval = loc;
2145
2146 while (len--)
2147 *loc++ = ch;
2148 return retval;
2149}
2150#endif
2151
7a3f2258 2152/* this is a drop-in replacement for bzero() */
7c0587c8 2153#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2154char *
7a3f2258 2155Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2156{
2157 char *retval = loc;
2158
2159 while (len--)
2160 *loc++ = 0;
2161 return retval;
2162}
2163#endif
7c0587c8 2164
7a3f2258 2165/* this is a drop-in replacement for memcmp() */
36477c24 2166#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2167I32
7a3f2258 2168Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2169{
36477c24 2170 register U8 *a = (U8 *)s1;
2171 register U8 *b = (U8 *)s2;
79072805 2172 register I32 tmp;
7c0587c8
LW		 2173
2174 while (len--) {
36477c24 2175 if (tmp = *a++ - *b++)
7c0587c8
LW		 2176 return tmp;
2177 }
2178 return 0;
2179}
36477c24 2180#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2181
fe14fcc3 2182#ifndef HAS_VPRINTF
a687059c 2183
85e6fe83 2184#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2185char *
2186#else
2187int
2188#endif
08105a92 2189vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2190{
2191 FILE fakebuf;
2192
2193 fakebuf._ptr = dest;
2194 fakebuf._cnt = 32767;
35c8bce7
LW		 2195#ifndef _IOSTRG
2196#define _IOSTRG 0
2197#endif
a687059c
LW		 2198 fakebuf._flag = _IOWRT|_IOSTRG;
2199 _doprnt(pat, args, &fakebuf); /* what a kludge */
2200 (void)putc('\0', &fakebuf);
85e6fe83 2201#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2202 return(dest);
2203#else
2204 return 0; /* perl doesn't use return value */
2205#endif
2206}
2207
fe14fcc3 2208#endif /* HAS_VPRINTF */
a687059c
LW		 2209
2210#ifdef MYSWAP
ffed7fef 2211#if BYTEORDER != 0x4321
a687059c 2212short
864dbfa3 2213Perl_my_swap(pTHX_ short s)
a687059c
LW		 2214{
2215#if (BYTEORDER & 1) == 0
2216 short result;
2217
2218 result = ((s & 255) << 8) + ((s >> 8) & 255);
2219 return result;
2220#else
2221 return s;
2222#endif
2223}
2224
2225long
864dbfa3 2226Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2227{
2228 union {
2229 long result;
ffed7fef 2230 char c[sizeof(long)];
a687059c
LW		 2231 } u;
2232
ffed7fef 2233#if BYTEORDER == 0x1234
a687059c
LW		 2234 u.c[0] = (l >> 24) & 255;
2235 u.c[1] = (l >> 16) & 255;
2236 u.c[2] = (l >> 8) & 255;
2237 u.c[3] = l & 255;
2238 return u.result;
2239#else
ffed7fef 2240#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2241 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2242#else
79072805
LW		 2243 register I32 o;
2244 register I32 s;
a687059c 2245
ffed7fef
LW		 2246 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2247 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2248 }
2249 return u.result;
2250#endif
2251#endif
2252}
2253
2254long
864dbfa3 2255Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2256{
2257 union {
2258 long l;
ffed7fef 2259 char c[sizeof(long)];
a687059c
LW		 2260 } u;
2261
ffed7fef 2262#if BYTEORDER == 0x1234
a687059c
LW		 2263 u.c[0] = (l >> 24) & 255;
2264 u.c[1] = (l >> 16) & 255;
2265 u.c[2] = (l >> 8) & 255;
2266 u.c[3] = l & 255;
2267 return u.l;
2268#else
ffed7fef 2269#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2270 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2271#else
79072805
LW		 2272 register I32 o;
2273 register I32 s;
a687059c
LW		 2274
2275 u.l = l;
2276 l = 0;
ffed7fef
LW		 2277 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2278 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2279 }
2280 return l;
2281#endif
2282#endif
2283}
2284
ffed7fef 2285#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2286#endif /* MYSWAP */
2287
2288/*
2289 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2290 * If these functions are defined,
2291 * the BYTEORDER is neither 0x1234 nor 0x4321.
2292 * However, this is not assumed.
2293 * -DWS
2294 */
2295
2296#define HTOV(name,type) \
2297 type \
ba106d47 2298 name (register type n) \
988174c1
LW		 2299 { \
2300 union { \
2301 type value; \
2302 char c[sizeof(type)]; \
2303 } u; \
79072805
LW		 2304 register I32 i; \
2305 register I32 s; \
988174c1
LW		 2306 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2307 u.c[i] = (n >> s) & 0xFF; \
2308 } \
2309 return u.value; \
2310 }
2311
2312#define VTOH(name,type) \
2313 type \
ba106d47 2314 name (register type n) \
988174c1
LW		 2315 { \
2316 union { \
2317 type value; \
2318 char c[sizeof(type)]; \
2319 } u; \
79072805
LW		 2320 register I32 i; \
2321 register I32 s; \
988174c1
LW		 2322 u.value = n; \
2323 n = 0; \
2324 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2325 n += (u.c[i] & 0xFF) << s; \
2326 } \
2327 return n; \
2328 }
2329
2330#if defined(HAS_HTOVS) && !defined(htovs)
2331HTOV(htovs,short)
2332#endif
2333#if defined(HAS_HTOVL) && !defined(htovl)
2334HTOV(htovl,long)
2335#endif
2336#if defined(HAS_VTOHS) && !defined(vtohs)
2337VTOH(vtohs,short)
2338#endif
2339#if defined(HAS_VTOHL) && !defined(vtohl)
2340VTOH(vtohl,long)
2341#endif
a687059c 2342
5f05dabc 2343 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2344#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2345PerlIO *
864dbfa3 2346Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2347{
2348 int p[2];
8ac85365 2349 register I32 This, that;
d8a83dd3 2350 register Pid_t pid;
79072805 2351 SV *sv;
1738f5c4 2352 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2353 I32 did_pipes = 0;
2354 int pp[2];
a687059c 2355
45bc9206 2356 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2357#ifdef OS2
2358 if (doexec) {
23da6c43 2359 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7 2360 }
a1d180c4 2361#endif
8ac85365
NIS		 2362 This = (*mode == 'w');
2363 that = !This;
3280af22 2364 if (doexec && PL_tainting) {
bbce6d69 2365 taint_env();
2366 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2367 }
c2267164
IZ		 2368 if (PerlProc_pipe(p) < 0)
2369 return Nullfp;
e446cec8
IZ		 2370 if (doexec && PerlProc_pipe(pp) >= 0)
2371 did_pipes = 1;
a687059c
LW		 2372 while ((pid = (doexec?vfork():fork())) < 0) {
2373 if (errno != EAGAIN) {
6ad3d225 2374 PerlLIO_close(p[This]);
e446cec8
IZ		 2375 if (did_pipes) {
2376 PerlLIO_close(pp[0]);
2377 PerlLIO_close(pp[1]);
2378 }
a687059c 2379 if (!doexec)
cea2e8a9 2380 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2381 return Nullfp;
2382 }
2383 sleep(5);
2384 }
2385 if (pid == 0) {
79072805
LW		 2386 GV* tmpgv;
2387
30ac6d9b
GS		 2388#undef THIS
2389#undef THAT
a687059c 2390#define THIS that
8ac85365 2391#define THAT This
6ad3d225 2392 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2393 if (did_pipes) {
2394 PerlLIO_close(pp[0]);
2395#if defined(HAS_FCNTL) && defined(F_SETFD)
2396 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2397#endif
2398 }
a687059c 2399 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2400 PerlLIO_dup2(p[THIS], *mode == 'r');
2401 PerlLIO_close(p[THIS]);
a687059c 2402 }
4435c477 2403#ifndef OS2
a687059c 2404 if (doexec) {
a0d0e21e 2405#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2406 int fd;
2407
2408#ifndef NOFILE
2409#define NOFILE 20
2410#endif
6b88bc9c 2411 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2412 if (fd != pp[1])
2413 PerlLIO_close(fd);
ae986130 2414#endif
e446cec8 2415 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2416 PerlProc__exit(1);
a687059c 2417 }
4435c477 2418#endif /* defined OS2 */
de3bb511 2419 /*SUPPRESS 560*/
155aba94 2420 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2421 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2422 PL_forkprocess = 0;
2423 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2424 return Nullfp;
2425#undef THIS
2426#undef THAT
2427 }
62b28dd9 2428 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2429 PerlLIO_close(p[that]);
e446cec8
IZ		 2430 if (did_pipes)
2431 PerlLIO_close(pp[1]);
8ac85365 2432 if (p[that] < p[This]) {
6ad3d225
GS		 2433 PerlLIO_dup2(p[This], p[that]);
2434 PerlLIO_close(p[This]);
8ac85365 2435 p[This] = p[that];
62b28dd9 2436 }
4755096e 2437 LOCK_FDPID_MUTEX;
3280af22 2438 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2439 UNLOCK_FDPID_MUTEX;
a0d0e21e 2440 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2441 SvIVX(sv) = pid;
3280af22 2442 PL_forkprocess = pid;
e446cec8
IZ		 2443 if (did_pipes && pid > 0) {
2444 int errkid;
2445 int n = 0, n1;
2446
2447 while (n < sizeof(int)) {
2448 n1 = PerlLIO_read(pp[0],
2449 (void*)(((char*)&errkid)+n),
2450 (sizeof(int)) - n);
2451 if (n1 <= 0)
2452 break;
2453 n += n1;
2454 }
2f96c702
IZ		 2455 PerlLIO_close(pp[0]);
2456 did_pipes = 0;
e446cec8 2457 if (n) { /* Error */
faa466a7 2458 int pid2, status;
e446cec8 2459 if (n != sizeof(int))
cea2e8a9 2460 Perl_croak(aTHX_ "panic: kid popen errno read");
faa466a7
RG		 2461 do {
2462 pid2 = wait4pid(pid, &status, 0);
2463 } while (pid2 == -1 && errno == EINTR);
e446cec8
IZ		 2464 errno = errkid; /* Propagate errno from kid */
2465 return Nullfp;
2466 }
2467 }
2468 if (did_pipes)
2469 PerlLIO_close(pp[0]);
8ac85365 2470 return PerlIO_fdopen(p[This], mode);
a687059c 2471}
7c0587c8 2472#else
55497cff 2473#if defined(atarist) || defined(DJGPP)
7c0587c8 2474FILE *popen();
760ac839 2475PerlIO *
864dbfa3 2476Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2477{
45bc9206 2478 PERL_FLUSHALL_FOR_CHILD;
a1d180c4
NIS		 2479 /* Call system's popen() to get a FILE *, then import it.
2480 used 0 for 2nd parameter to PerlIO_importFILE;
2481 apparently not used
2482 */
2483 return PerlIO_importFILE(popen(cmd, mode), 0);
7c0587c8
LW		 2484}
2485#endif
2486
2487#endif /* !DOSISH */
a687059c 2488
748a9306 2489#ifdef DUMP_FDS
35ff7856 2490void
864dbfa3 2491Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2492{
2493 int fd;
2494 struct stat tmpstatbuf;
2495
bf49b057 2496 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2497 for (fd = 0; fd < 32; fd++) {
6ad3d225 2498 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2499 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2500 }
bf49b057 2501 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2502}
35ff7856 2503#endif /* DUMP_FDS */
ae986130 2504
fe14fcc3 2505#ifndef HAS_DUP2
fec02dd3 2506int
ba106d47 2507dup2(int oldfd, int newfd)
a687059c 2508{
a0d0e21e 2509#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2510 if (oldfd == newfd)
2511 return oldfd;
6ad3d225 2512 PerlLIO_close(newfd);
fec02dd3 2513 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2514#else
fc36a67e 2515#define DUP2_MAX_FDS 256
2516 int fdtmp[DUP2_MAX_FDS];
79072805 2517 I32 fdx = 0;
ae986130
LW		 2518 int fd;
2519
fe14fcc3 2520 if (oldfd == newfd)
fec02dd3 2521 return oldfd;
6ad3d225 2522 PerlLIO_close(newfd);
fc36a67e 2523 /* good enough for low fd's... */
6ad3d225 2524 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2525 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2526 PerlLIO_close(fd);
fc36a67e 2527 fd = -1;
2528 break;
2529 }
ae986130 2530 fdtmp[fdx++] = fd;
fc36a67e 2531 }
ae986130 2532 while (fdx > 0)
6ad3d225 2533 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2534 return fd;
62b28dd9 2535#endif
a687059c
LW		 2536}
2537#endif
2538
64ca3a65 2539#ifndef PERL_MICRO
ff68c719 2540#ifdef HAS_SIGACTION
2541
2542Sighandler_t
864dbfa3 2543Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2544{
2545 struct sigaction act, oact;
2546
2547 act.sa_handler = handler;
2548 sigemptyset(&act.sa_mask);
2549 act.sa_flags = 0;
2550#ifdef SA_RESTART
2551 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2552#endif
85264bed
CS		 2553#ifdef SA_NOCLDWAIT
2554 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2555 act.sa_flags |= SA_NOCLDWAIT;
2556#endif
ff68c719 2557 if (sigaction(signo, &act, &oact) == -1)
36477c24 2558 return SIG_ERR;
ff68c719 2559 else
36477c24 2560 return oact.sa_handler;
ff68c719 2561}
2562
2563Sighandler_t
864dbfa3 2564Perl_rsignal_state(pTHX_ int signo)
ff68c719 2565{
2566 struct sigaction oact;
2567
2568 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2569 return SIG_ERR;
2570 else
2571 return oact.sa_handler;
2572}
2573
2574int
864dbfa3 2575Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2576{
2577 struct sigaction act;
2578
2579 act.sa_handler = handler;
2580 sigemptyset(&act.sa_mask);
2581 act.sa_flags = 0;
2582#ifdef SA_RESTART
2583 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2584#endif
85264bed
CS		 2585#ifdef SA_NOCLDWAIT
2586 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2587 act.sa_flags |= SA_NOCLDWAIT;
2588#endif
ff68c719 2589 return sigaction(signo, &act, save);
2590}
2591
2592int
864dbfa3 2593Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2594{
2595 return sigaction(signo, save, (struct sigaction *)NULL);
2596}
2597
2598#else /* !HAS_SIGACTION */
2599
2600Sighandler_t
864dbfa3 2601Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2602{
6ad3d225 2603 return PerlProc_signal(signo, handler);
ff68c719 2604}
2605
2606static int sig_trapped;
2607
2608static
2609Signal_t
4e35701f 2610sig_trap(int signo)
ff68c719 2611{
2612 sig_trapped++;
2613}
2614
2615Sighandler_t
864dbfa3 2616Perl_rsignal_state(pTHX_ int signo)
ff68c719 2617{
2618 Sighandler_t oldsig;
2619
2620 sig_trapped = 0;
6ad3d225
GS		 2621 oldsig = PerlProc_signal(signo, sig_trap);
2622 PerlProc_signal(signo, oldsig);
ff68c719 2623 if (sig_trapped)
7766f137 2624 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2625 return oldsig;
2626}
2627
2628int
864dbfa3 2629Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2630{
6ad3d225 2631 *save = PerlProc_signal(signo, handler);
ff68c719 2632 return (*save == SIG_ERR) ? -1 : 0;
2633}
2634
2635int
864dbfa3 2636Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2637{
6ad3d225 2638 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2639}
2640
2641#endif /* !HAS_SIGACTION */
64ca3a65 2642#endif /* !PERL_MICRO */
ff68c719 2643
5f05dabc 2644 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2645#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2646I32
864dbfa3 2647Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2648{
ff68c719 2649 Sigsave_t hstat, istat, qstat;
a687059c 2650 int status;
a0d0e21e 2651 SV **svp;
d8a83dd3
JH		 2652 Pid_t pid;
2653 Pid_t pid2;
03136e13
CS		 2654 bool close_failed;
2655 int saved_errno;
2656#ifdef VMS
2657 int saved_vaxc_errno;
2658#endif
22fae026
TM		 2659#ifdef WIN32
2660 int saved_win32_errno;
2661#endif
a687059c 2662
4755096e 2663 LOCK_FDPID_MUTEX;
3280af22 2664 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2665 UNLOCK_FDPID_MUTEX;
245f541b 2666 pid = SvIVX(*svp);
a0d0e21e 2667 SvREFCNT_dec(*svp);
3280af22 2668 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2669#ifdef OS2
2670 if (pid == -1) { /* Opened by popen. */
2671 return my_syspclose(ptr);
2672 }
a1d180c4 2673#endif
03136e13
CS		 2674 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2675 saved_errno = errno;
2676#ifdef VMS
2677 saved_vaxc_errno = vaxc$errno;
2678#endif
22fae026
TM		 2679#ifdef WIN32
2680 saved_win32_errno = GetLastError();
2681#endif
03136e13 2682 }
7c0587c8 2683#ifdef UTS
6ad3d225 2684 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2685#endif
64ca3a65 2686#ifndef PERL_MICRO
ff68c719 2687 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2688 rsignal_save(SIGINT, SIG_IGN, &istat);
2689 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2690#endif
748a9306 2691 do {
1d3434b8
GS		 2692 pid2 = wait4pid(pid, &status, 0);
2693 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2694#ifndef PERL_MICRO
ff68c719 2695 rsignal_restore(SIGHUP, &hstat);
2696 rsignal_restore(SIGINT, &istat);
2697 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2698#endif
03136e13
CS		 2699 if (close_failed) {
2700 SETERRNO(saved_errno, saved_vaxc_errno);
2701 return -1;
2702 }
1d3434b8 2703 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2704}
4633a7c4
LW		 2705#endif /* !DOSISH */
2706
cd39f2b6 2707#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2708I32
d8a83dd3 2709Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2710{
79072805
LW		 2711 SV *sv;
2712 SV** svp;
fc36a67e 2713 char spid[TYPE_CHARS(int)];
20188a90
LW		 2714
2715 if (!pid)
2716 return -1;
68a29c53 2717#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2718 if (pid > 0) {
7b0972df 2719 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2720 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2721 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2722 *statusp = SvIVX(*svp);
3280af22 2723 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2724 return pid;
2725 }
2726 }
2727 else {
79072805 2728 HE *entry;
20188a90 2729
3280af22 2730 hv_iterinit(PL_pidstatus);
155aba94 2731 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2732 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2733 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2734 *statusp = SvIVX(sv);
7b0972df 2735 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2736 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2737 return pid;
2738 }
2739 }
68a29c53 2740#endif
79072805 2741#ifdef HAS_WAITPID
367f3c24
IZ		 2742# ifdef HAS_WAITPID_RUNTIME
2743 if (!HAS_WAITPID_RUNTIME)
2744 goto hard_way;
2745# endif
f55ee38a 2746 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2747#endif
2748#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2749 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2750#endif
2751#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2752 hard_way:
a0d0e21e
LW		 2753 {
2754 I32 result;
2755 if (flags)
cea2e8a9 2756 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2757 else {
76e3520e 2758 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2759 pidgone(result,*statusp);
2760 if (result < 0)
2761 *statusp = -1;
2762 }
2763 return result;
a687059c
LW		 2764 }
2765#endif
a687059c 2766}
2d7a9237 2767#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2768
7c0587c8 2769void
de3bb511 2770/*SUPPRESS 590*/
d8a83dd3 2771Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2772{
79072805 2773 register SV *sv;
fc36a67e 2774 char spid[TYPE_CHARS(int)];
a687059c 2775
7b0972df 2776 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2777 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2778 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2779 SvIVX(sv) = status;
20188a90 2780 return;
a687059c
LW		 2781}
2782
55497cff 2783#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2784int pclose();
ddcf38b7
IZ		 2785#ifdef HAS_FORK
2786int /* Cannot prototype with I32
2787 in os2ish.h. */
ba106d47 2788my_syspclose(PerlIO *ptr)
ddcf38b7 2789#else
79072805 2790I32
864dbfa3 2791Perl_my_pclose(pTHX_ PerlIO *ptr)
a1d180c4 2792#endif
a687059c 2793{
760ac839
LW		 2794 /* Needs work for PerlIO ! */
2795 FILE *f = PerlIO_findFILE(ptr);
2796 I32 result = pclose(f);
933fea7f
GS		 2797#if defined(DJGPP)
2798 result = (result << 8) & 0xff00;
2799#endif
760ac839
LW		 2800 PerlIO_releaseFILE(ptr,f);
2801 return result;
a687059c 2802}
7c0587c8 2803#endif
9f68db38
LW		 2804
2805void
864dbfa3 2806Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2807{
79072805 2808 register I32 todo;
08105a92 2809 register const char *frombase = from;
9f68db38
LW		 2810
2811 if (len == 1) {
08105a92 2812 register const char c = *from;
9f68db38 2813 while (count-- > 0)
5926133d 2814 *to++ = c;
9f68db38
LW		 2815 return;
2816 }
2817 while (count-- > 0) {
2818 for (todo = len; todo > 0; todo--) {
2819 *to++ = *from++;
2820 }
2821 from = frombase;
2822 }
2823}
0f85fab0 2824
463ee0b2 2825U32
65202027 2826Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2827{
2828 long along;
2829
27e2fb84 2830#if CASTFLAGS & 2
34de22dd
LW		 2831# define BIGDOUBLE 2147483648.0
2832 if (f >= BIGDOUBLE)
2833 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2834#endif
0f85fab0
LW		 2835 if (f >= 0.0)
2836 return (unsigned long)f;
2837 along = (long)f;
2838 return (unsigned long)along;
2839}
ed6116ce 2840# undef BIGDOUBLE
5d94fbed 2841
5d94fbed
AD		 2842/* Unfortunately, on some systems the cast_uv() function doesn't
2843 work with the system-supplied definition of ULONG_MAX. The
2844 comparison (f >= ULONG_MAX) always comes out true. It must be a
2845 problem with the compiler constant folding.
2846
2847 In any case, this workaround should be fine on any two's complement
2848 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2849 ccflags.
2850 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2851*/
1eb770ff 2852
2853/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2854 of LONG_(MIN/MAX).
2855 -- Kenneth Albanowski <kjahds@kjahds.com>
a1d180c4 2856*/
1eb770ff 2857
20cec16a 2858#ifndef MY_UV_MAX
2859# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2860#endif
2861
ed6116ce 2862I32
65202027 2863Perl_cast_i32(pTHX_ NV f)
ed6116ce 2864{
20cec16a 2865 if (f >= I32_MAX)
2866 return (I32) I32_MAX;
2867 if (f <= I32_MIN)
2868 return (I32) I32_MIN;
ed6116ce
LW		 2869 return (I32) f;
2870}
a0d0e21e
LW		 2871
2872IV
65202027 2873Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2874{
25da4f38
IZ		 2875 if (f >= IV_MAX) {
2876 UV uv;
2877
65202027 2878 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2879 return (IV) UV_MAX;
2880 uv = (UV) f;
2881 return (IV)uv;
2882 }
20cec16a 2883 if (f <= IV_MIN)
2884 return (IV) IV_MIN;
a0d0e21e
LW		 2885 return (IV) f;
2886}
5d94fbed
AD		 2887
2888UV
65202027 2889Perl_cast_uv(pTHX_ NV f)
5d94fbed 2890{
20cec16a 2891 if (f >= MY_UV_MAX)
2892 return (UV) MY_UV_MAX;
25da4f38
IZ		 2893 if (f < 0) {
2894 IV iv;
2895
2896 if (f < IV_MIN)
2897 return (UV)IV_MIN;
2898 iv = (IV) f;
2899 return (UV) iv;
2900 }
5d94fbed
AD		 2901 return (UV) f;
2902}
2903
fe14fcc3 2904#ifndef HAS_RENAME
79072805 2905I32
864dbfa3 2906Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2907{
93a17b20
LW		 2908 char *fa = strrchr(a,'/');
2909 char *fb = strrchr(b,'/');
62b28dd9
LW		 2910 struct stat tmpstatbuf1;
2911 struct stat tmpstatbuf2;
46fc3d4c 2912 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2913
2914 if (fa)
2915 fa++;
2916 else
2917 fa = a;
2918 if (fb)
2919 fb++;
2920 else
2921 fb = b;
2922 if (strNE(a,b))
2923 return FALSE;
2924 if (fa == a)
46fc3d4c 2925 sv_setpv(tmpsv, ".");
62b28dd9 2926 else
46fc3d4c 2927 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2928 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2929 return FALSE;
2930 if (fb == b)
46fc3d4c 2931 sv_setpv(tmpsv, ".");
62b28dd9 2932 else
46fc3d4c 2933 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2934 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2935 return FALSE;
2936 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2937 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2938}
fe14fcc3
LW		 2939#endif /* !HAS_RENAME */
2940
9e24b6e2 2941NV
ba210ebe 2942Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
4f19785b
WSI		 2943{
2944 register char *s = start;
9e24b6e2
JH		 2945 register NV rnv = 0.0;
2946 register UV ruv = 0;
252aa082 2947 register bool seenb = FALSE;
9e24b6e2 2948 register bool overflowed = FALSE;
252aa082
JH		 2949
2950 for (; len-- && *s; s++) {
2951 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2952 if (*s == '_' && len && *retlen
2953 && (s[1] == '0' || s[1] == '1'))
2954 {
2955 --len;
2956 ++s;
2957 }
2958 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2959 /* Disallow 0bbb0b0bbb... */
2960 seenb = TRUE;
252aa082
JH		 2961 continue;
2962 }
2963 else {
627300f0
JH		 2964 if (ckWARN(WARN_DIGIT))
2965 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2966 "Illegal binary digit '%c' ignored", *s);
2967 break;
2968 }
9e24b6e2
JH		 2969 }
2970 if (!overflowed) {
2971 register UV xuv = ruv << 1;
2972
2973 if ((xuv >> 1) != ruv) {
9e24b6e2
JH		 2974 overflowed = TRUE;
2975 rnv = (NV) ruv;
627300f0
JH		 2976 if (ckWARN_d(WARN_OVERFLOW))
2977 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2978 "Integer overflow in binary number");
b21ed0a9
GS		 2979 }
2980 else
9e24b6e2
JH		 2981 ruv = xuv | (*s - '0');
2982 }
2983 if (overflowed) {
2984 rnv *= 2;
2985 /* If an NV has not enough bits in its mantissa to
2986 * represent an UV this summing of small low-order numbers
2987 * is a waste of time (because the NV cannot preserve
2988 * the low-order bits anyway): we could just remember when
2989 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2990 * right amount. */
9e24b6e2 2991 rnv += (*s - '0');
f248d071 2992 }
4f19785b 2993 }
9e24b6e2
JH		 2994 if (!overflowed)
2995 rnv = (NV) ruv;
893fe2c2 2996 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2997#if UVSIZE > 4
893fe2c2
JH		 2998 || (!overflowed && ruv > 0xffffffff )
2999#endif
a1d180c4 3000 ) {
627300f0
JH		 3001 if (ckWARN(WARN_PORTABLE))
3002 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3003 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 3004 }
3005 *retlen = s - start;
9e24b6e2 3006 return rnv;
4f19785b 3007}
9e24b6e2
JH		 3008
3009NV
ba210ebe 3010Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3011{
3012 register char *s = start;
9e24b6e2
JH		 3013 register NV rnv = 0.0;
3014 register UV ruv = 0;
3015 register bool overflowed = FALSE;
252aa082
JH		 3016
3017 for (; len-- && *s; s++) {
3018 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 3019 if (*s == '_' && len && *retlen
3020 && (s[1] >= '0' && s[1] <= '7'))
3021 {
3022 --len;
3023 ++s;
3024 }
252aa082 3025 else {
f84f607d
JH		 3026 /* Allow \octal to work the DWIM way (that is, stop scanning
3027 * as soon as non-octal characters are seen, complain only iff
3028 * someone seems to want to use the digits eight and nine). */
252aa082 3029 if (*s == '8' || *s == '9') {
627300f0
JH		 3030 if (ckWARN(WARN_DIGIT))
3031 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 3032 "Illegal octal digit '%c' ignored", *s);
3033 }
3034 break;
3035 }
55497cff 3036 }
9e24b6e2 3037 if (!overflowed) {
893fe2c2 3038 register UV xuv = ruv << 3;
9e24b6e2
JH		 3039
3040 if ((xuv >> 3) != ruv) {
9e24b6e2
JH		 3041 overflowed = TRUE;
3042 rnv = (NV) ruv;
627300f0
JH		 3043 if (ckWARN_d(WARN_OVERFLOW))
3044 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3045 "Integer overflow in octal number");
b21ed0a9
GS		 3046 }
3047 else
9e24b6e2
JH		 3048 ruv = xuv | (*s - '0');
3049 }
3050 if (overflowed) {
3051 rnv *= 8.0;
3052 /* If an NV has not enough bits in its mantissa to
3053 * represent an UV this summing of small low-order numbers
3054 * is a waste of time (because the NV cannot preserve
3055 * the low-order bits anyway): we could just remember when
3056 * did we overflow and in the end just multiply rnv by the
3057 * right amount of 8-tuples. */
3058 rnv += (NV)(*s - '0');
3059 }
fe14fcc3 3060 }
9e24b6e2
JH		 3061 if (!overflowed)
3062 rnv = (NV) ruv;
893fe2c2 3063 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3064#if UVSIZE > 4
893fe2c2
JH		 3065 || (!overflowed && ruv > 0xffffffff )
3066#endif
3067 ) {
627300f0
JH		 3068 if (ckWARN(WARN_PORTABLE))
3069 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3070 "Octal number > 037777777777 non-portable");
d008e5eb 3071 }
fe14fcc3 3072 *retlen = s - start;
9e24b6e2 3073 return rnv;
fe14fcc3
LW		 3074}
3075
9e24b6e2 3076NV
ba210ebe 3077Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3078{
3079 register char *s = start;
9e24b6e2
JH		 3080 register NV rnv = 0.0;
3081 register UV ruv = 0;
9e24b6e2 3082 register bool overflowed = FALSE;
9e24b6e2 3083 char *hexdigit;
fe14fcc3 3084
cfd3e6cc
JH		 3085 if (len > 2) {
3086 if (s[0] == 'x') {
3087 s++;
3088 len--;
3089 }
3090 else if (len > 3 && s[0] == '0' && s[1] == 'x') {
3091 s+=2;
3092 len-=2;
3093 }
3094 }
3095
9e24b6e2
JH		 3096 for (; len-- && *s; s++) {
3097 hexdigit = strchr((char *) PL_hexdigit, *s);
3098 if (!hexdigit) {
b21ed0a9
GS		 3099 if (*s == '_' && len && *retlen && s[1]
3100 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3101 {
3102 --len;
3103 ++s;
3104 }
a0ed51b3 3105 else {
627300f0
JH		 3106 if (ckWARN(WARN_DIGIT))
3107 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3108 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3109 break;
3110 }
3111 }
9e24b6e2
JH		 3112 if (!overflowed) {
3113 register UV xuv = ruv << 4;
3114
3115 if ((xuv >> 4) != ruv) {
9e24b6e2
JH		 3116 overflowed = TRUE;
3117 rnv = (NV) ruv;
627300f0
JH		 3118 if (ckWARN_d(WARN_OVERFLOW))
3119 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3120 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3121 }
3122 else
9e24b6e2
JH		 3123 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3124 }
3125 if (overflowed) {
3126 rnv *= 16.0;
3127 /* If an NV has not enough bits in its mantissa to
3128 * represent an UV this summing of small low-order numbers
3129 * is a waste of time (because the NV cannot preserve
3130 * the low-order bits anyway): we could just remember when
3131 * did we overflow and in the end just multiply rnv by the
3132 * right amount of 16-tuples. */
3133 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3134 }
6ff81951 3135 }
9e24b6e2
JH		 3136 if (!overflowed)
3137 rnv = (NV) ruv;
893fe2c2 3138 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3139#if UVSIZE > 4
893fe2c2
JH		 3140 || (!overflowed && ruv > 0xffffffff )
3141#endif
a1d180c4 3142 ) {
627300f0
JH		 3143 if (ckWARN(WARN_PORTABLE))
3144 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3145 "Hexadecimal number > 0xffffffff non-portable");
3146 }
fe14fcc3 3147 *retlen = s - start;
9e24b6e2 3148 return rnv;
fe14fcc3 3149}
760ac839 3150
491527d0 3151char*
864dbfa3 3152Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0 3153{
491527d0
GS		 3154 char *xfound = Nullch;
3155 char *xfailed = Nullch;
0f31cffe 3156 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3157 register char *s;
3158 I32 len;
3159 int retval;
3160#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3161# define SEARCH_EXTS ".bat", ".cmd", NULL
3162# define MAX_EXT_LEN 4
3163#endif
3164#ifdef OS2
3165# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3166# define MAX_EXT_LEN 4
3167#endif
3168#ifdef VMS
3169# define SEARCH_EXTS ".pl", ".com", NULL
3170# define MAX_EXT_LEN 4
3171#endif
3172 /* additional extensions to try in each dir if scriptname not found */
3173#ifdef SEARCH_EXTS
3174 char *exts[] = { SEARCH_EXTS };
3175 char **ext = search_ext ? search_ext : exts;
3176 int extidx = 0, i = 0;
3177 char *curext = Nullch;
3178#else
3179# define MAX_EXT_LEN 0
3180#endif
3181
3182 /*
3183 * If dosearch is true and if scriptname does not contain path
3184 * delimiters, search the PATH for scriptname.
3185 *
3186 * If SEARCH_EXTS is also defined, will look for each
3187 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3188 * while searching the PATH.
3189 *
3190 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3191 * proceeds as follows:
3192 * If DOSISH or VMSISH:
3193 * + look for ./scriptname{,.foo,.bar}
3194 * + search the PATH for scriptname{,.foo,.bar}
3195 *
3196 * If !DOSISH:
3197 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3198 * this will not look in '.' if it's not in the PATH)
3199 */
84486fc6 3200 tmpbuf[0] = '\0';
491527d0
GS		 3201
3202#ifdef VMS
3203# ifdef ALWAYS_DEFTYPES
3204 len = strlen(scriptname);
3205 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3206 int hasdir, idx = 0, deftypes = 1;
3207 bool seen_dot = 1;
3208
3209 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3210# else
3211 if (dosearch) {
3212 int hasdir, idx = 0, deftypes = 1;
3213 bool seen_dot = 1;
3214
3215 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3216# endif
3217 /* The first time through, just add SEARCH_EXTS to whatever we
3218 * already have, so we can check for default file types. */
3219 while (deftypes ||
84486fc6 3220 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3221 {
3222 if (deftypes) {
3223 deftypes = 0;
84486fc6 3224 *tmpbuf = '\0';
491527d0 3225 }
84486fc6
GS		 3226 if ((strlen(tmpbuf) + strlen(scriptname)
3227 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3228 continue; /* don't search dir with too-long name */
84486fc6 3229 strcat(tmpbuf, scriptname);
491527d0
GS		 3230#else /* !VMS */
3231
3232#ifdef DOSISH
3233 if (strEQ(scriptname, "-"))
3234 dosearch = 0;
3235 if (dosearch) { /* Look in '.' first. */
3236 char *cur = scriptname;
3237#ifdef SEARCH_EXTS
3238 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3239 while (ext[i])
3240 if (strEQ(ext[i++],curext)) {
3241 extidx = -1; /* already has an ext */
3242 break;
3243 }
3244 do {
3245#endif
3246 DEBUG_p(PerlIO_printf(Perl_debug_log,
3247 "Looking for %s\n",cur));
017f25f1
IZ		 3248 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3249 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3250 dosearch = 0;
3251 scriptname = cur;
3252#ifdef SEARCH_EXTS
3253 break;
3254#endif
3255 }
3256#ifdef SEARCH_EXTS
3257 if (cur == scriptname) {
3258 len = strlen(scriptname);
84486fc6 3259 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3260 break;
84486fc6 3261 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3262 }
3263 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3264 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3265#endif
3266 }
3267#endif
3268
cd39f2b6
JH		 3269#ifdef MACOS_TRADITIONAL
3270 if (dosearch && !strchr(scriptname, ':') &&
3271 (s = PerlEnv_getenv("Commands")))
3272#else
491527d0
GS		 3273 if (dosearch && !strchr(scriptname, '/')
3274#ifdef DOSISH
3275 && !strchr(scriptname, '\\')
3276#endif
cd39f2b6
JH		 3277 && (s = PerlEnv_getenv("PATH")))
3278#endif
3279 {
491527d0
GS		 3280 bool seen_dot = 0;
3281
3280af22
NIS		 3282 PL_bufend = s + strlen(s);
3283 while (s < PL_bufend) {
cd39f2b6
JH		 3284#ifdef MACOS_TRADITIONAL
3285 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3286 ',',
3287 &len);
3288#else
491527d0
GS		 3289#if defined(atarist) || defined(DOSISH)
3290 for (len = 0; *s
3291# ifdef atarist
3292 && *s != ','
3293# endif
3294 && *s != ';'; len++, s++) {
84486fc6
GS		 3295 if (len < sizeof tmpbuf)
3296 tmpbuf[len] = *s;
491527d0 3297 }
84486fc6
GS		 3298 if (len < sizeof tmpbuf)
3299 tmpbuf[len] = '\0';
491527d0 3300#else /* ! (atarist || DOSISH) */
3280af22 3301 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3302 ':',
3303 &len);
3304#endif /* ! (atarist || DOSISH) */
cd39f2b6 3305#endif /* MACOS_TRADITIONAL */
3280af22 3306 if (s < PL_bufend)
491527d0 3307 s++;
84486fc6 3308 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3309 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3310#ifdef MACOS_TRADITIONAL
3311 if (len && tmpbuf[len - 1] != ':')
3312 tmpbuf[len++] = ':';
3313#else
491527d0 3314 if (len
61ae2fbf 3315#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3316 && tmpbuf[len - 1] != '/'
3317 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3318#endif
3319 )
84486fc6
GS		 3320 tmpbuf[len++] = '/';
3321 if (len == 2 && tmpbuf[0] == '.')
491527d0 3322 seen_dot = 1;
cd39f2b6 3323#endif
84486fc6 3324 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3325#endif /* !VMS */
3326
3327#ifdef SEARCH_EXTS
84486fc6 3328 len = strlen(tmpbuf);
491527d0
GS		 3329 if (extidx > 0) /* reset after previous loop */
3330 extidx = 0;
3331 do {
3332#endif
84486fc6 3333 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3334 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3335 if (S_ISDIR(PL_statbuf.st_mode)) {
3336 retval = -1;
3337 }
491527d0
GS		 3338#ifdef SEARCH_EXTS
3339 } while ( retval < 0 /* not there */
3340 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3341 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3342 );
3343#endif
3344 if (retval < 0)
3345 continue;
3280af22
NIS		 3346 if (S_ISREG(PL_statbuf.st_mode)
3347 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3348#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3349 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3350#endif
3351 )
3352 {
84486fc6 3353 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3354 break;
3355 }
3356 if (!xfailed)
84486fc6 3357 xfailed = savepv(tmpbuf);
491527d0
GS		 3358 }
3359#ifndef DOSISH
017f25f1 3360 if (!xfound && !seen_dot && !xfailed &&
a1d180c4 3361 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
017f25f1 3362 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3363#endif
3364 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3365 if (!xfound) {
3366 if (flags & 1) { /* do or die? */
cea2e8a9 3367 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3368 (xfailed ? "execute" : "find"),
3369 (xfailed ? xfailed : scriptname),
3370 (xfailed ? "" : " on PATH"),
3371 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3372 }
3373 scriptname = Nullch;
3374 }
491527d0
GS		 3375 if (xfailed)
3376 Safefree(xfailed);
3377 scriptname = xfound;
3378 }
9ccb31f9 3379 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3380}
3381
ba869deb
GS		 3382#ifndef PERL_GET_CONTEXT_DEFINED
3383
3384void *
3385Perl_get_context(void)
3386{
3387#if defined(USE_THREADS) || defined(USE_ITHREADS)
3388# ifdef OLD_PTHREADS_API
3389 pthread_addr_t t;
3390 if (pthread_getspecific(PL_thr_key, &t))
3391 Perl_croak_nocontext("panic: pthread_getspecific");
3392 return (void*)t;
3393# else
c44d3fdb
GS		 3394# ifdef I_MACH_CTHREADS
3395 return (void*)cthread_data(cthread_self());
3396# else
ba869deb
GS		 3397 return (void*)pthread_getspecific(PL_thr_key);
3398# endif
c44d3fdb 3399# endif
ba869deb
GS		 3400#else
3401 return (void*)NULL;
3402#endif
3403}
3404
3405void
3406Perl_set_context(void *t)
3407{
3408#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3409# ifdef I_MACH_CTHREADS
3410 cthread_set_data(cthread_self(), t);
3411# else
ba869deb
GS		 3412 if (pthread_setspecific(PL_thr_key, t))
3413 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3414# endif
ba869deb
GS		 3415#endif
3416}
3417
3418#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3419
11343788 3420#ifdef USE_THREADS
ba869deb 3421
12ca11f6
MB		 3422#ifdef FAKE_THREADS
3423/* Very simplistic scheduler for now */
3424void
3425schedule(void)
3426{
c7848ba1 3427 thr = thr->i.next_run;
12ca11f6
MB		 3428}
3429
3430void
864dbfa3 3431Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3432{
3433 *cp = 0;
3434}
3435
3436void
864dbfa3 3437Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3438{
51dd5992 3439 perl_os_thread t;
12ca11f6 3440 perl_cond cond = *cp;
a1d180c4 3441
12ca11f6
MB		 3442 if (!cond)
3443 return;
3444 t = cond->thread;
3445 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3446 t->i.next_run = thr->i.next_run;
3447 thr->i.next_run->i.prev_run = t;
3448 t->i.prev_run = thr;
3449 thr->i.next_run = t;
3450 thr->i.wait_queue = 0;
12ca11f6
MB		 3451 /* Remove from the wait queue */
3452 *cp = cond->next;
3453 Safefree(cond);
3454}
3455
3456void
864dbfa3 3457Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3458{
51dd5992 3459 perl_os_thread t;
12ca11f6 3460 perl_cond cond, cond_next;
a1d180c4 3461
12ca11f6
MB		 3462 for (cond = *cp; cond; cond = cond_next) {
3463 t = cond->thread;
3464 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3465 t->i.next_run = thr->i.next_run;
3466 thr->i.next_run->i.prev_run = t;
3467 t->i.prev_run = thr;
3468 thr->i.next_run = t;
3469 thr->i.wait_queue = 0;
12ca11f6
MB		 3470 /* Remove from the wait queue */
3471 cond_next = cond->next;
3472 Safefree(cond);
3473 }
3474 *cp = 0;
3475}
3476
3477void
864dbfa3 3478Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3479{
3480 perl_cond cond;
3481
c7848ba1 3482 if (thr->i.next_run == thr)
cea2e8a9 3483 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
a1d180c4 3484
0f15f207 3485 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3486 cond->thread = thr;
3487 cond->next = *cp;
3488 *cp = cond;
c7848ba1 3489 thr->i.wait_queue = cond;
12ca11f6 3490 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3491 thr->i.next_run->i.prev_run = thr->i.prev_run;
3492 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3493}
3494#endif /* FAKE_THREADS */
3495
f93b4edd 3496MAGIC *
864dbfa3 3497Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3498{
3499 MAGIC *mg;
a1d180c4 3500
f93b4edd
MB		 3501 SvUPGRADE(sv, SVt_PVMG);
3502 mg = mg_find(sv, 'm');
3503 if (!mg) {
3504 condpair_t *cp;
3505
3506 New(53, cp, 1, condpair_t);
3507 MUTEX_INIT(&cp->mutex);
3508 COND_INIT(&cp->owner_cond);
3509 COND_INIT(&cp->cond);
3510 cp->owner = 0;
1feb2720 3511 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3512 mg = mg_find(sv, 'm');
3513 if (mg) {
3514 /* someone else beat us to initialising it */
1feb2720 3515 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3516 MUTEX_DESTROY(&cp->mutex);
3517 COND_DESTROY(&cp->owner_cond);
3518 COND_DESTROY(&cp->cond);
3519 Safefree(cp);
3520 }
3521 else {
3522 sv_magic(sv, Nullsv, 'm', 0, 0);
3523 mg = SvMAGIC(sv);
3524 mg->mg_ptr = (char *)cp;
565764a8 3525 mg->mg_len = sizeof(cp);
1feb2720 3526 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3527 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3528 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3529 }
3530 }
3531 return mg;
3532}
a863c7d1 3533
3d35f11b 3534SV *
4755096e 3535Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS		 3536{
3537 MAGIC *mg;
3538 SV *sv = osv;
3539
631cfb58 3540 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS		 3541 if (SvROK(sv)) {
3542 sv = SvRV(sv);
3d35f11b
GS		 3543 }
3544
3545 mg = condpair_magic(sv);
3546 MUTEX_LOCK(MgMUTEXP(mg));
3547 if (MgOWNER(mg) == thr)
3548 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3549 else {
3d35f11b
GS		 3550 while (MgOWNER(mg))
3551 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3552 MgOWNER(mg) = thr;
4755096e
GS		 3553 DEBUG_S(PerlIO_printf(Perl_debug_log,
3554 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS		 3555 PTR2UV(thr), PTR2UV(sv));)
3556 MUTEX_UNLOCK(MgMUTEXP(mg));
3557 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3558 }
631cfb58 3559 UNLOCK_SV_LOCK_MUTEX;
4755096e 3560 return sv;
3d35f11b
GS		 3561}
3562
a863c7d1 3563/*
199100c8
MB		 3564 * Make a new perl thread structure using t as a prototype. Some of the
3565 * fields for the new thread are copied from the prototype thread, t,
3566 * so t should not be running in perl at the time this function is
3567 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3568 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3569 */
52e1cb5e 3570struct perl_thread *
864dbfa3 3571Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3572{
c5be433b 3573#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3574 struct perl_thread *thr;
cea2e8a9 3575#endif
a863c7d1 3576 SV *sv;
199100c8
MB		 3577 SV **svp;
3578 I32 i;
3579
79cb57f6 3580 sv = newSVpvn("", 0);
52e1cb5e
JH		 3581 SvGROW(sv, sizeof(struct perl_thread) + 1);
3582 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3583 thr = (Thread) SvPVX(sv);
949ced2d 3584#ifdef DEBUGGING
52e1cb5e 3585 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3586 PL_markstack = 0;
3587 PL_scopestack = 0;
3588 PL_savestack = 0;
3589 PL_retstack = 0;
3590 PL_dirty = 0;
3591 PL_localizing = 0;
949ced2d 3592 Zero(&PL_hv_fetch_ent_mh, 1, HE);
d0e9ca0c
HS		 3593 PL_efloatbuf = (char*)NULL;
3594 PL_efloatsize = 0;
949ced2d
GS		 3595#else
3596 Zero(thr, 1, struct perl_thread);
3597#endif
199100c8
MB		 3598
3599 thr->oursv = sv;
cea2e8a9 3600 init_stacks();
a863c7d1 3601
533c011a 3602 PL_curcop = &PL_compiling;
c5be433b 3603 thr->interp = t->interp;
199100c8 3604 thr->cvcache = newHV();
54b9620d 3605 thr->threadsv = newAV();
a863c7d1 3606 thr->specific = newAV();
79cb57f6 3607 thr->errsv = newSVpvn("", 0);
a863c7d1 3608 thr->flags = THRf_R_JOINABLE;
8dcd6f7b 3609 thr->thr_done = 0;
a863c7d1 3610 MUTEX_INIT(&thr->mutex);
199100c8 3611
5c831c24 3612 JMPENV_BOOTSTRAP;
533c011a 3613
6dc8a9e4 3614 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
533c011a
NIS		 3615 PL_restartop = 0;
3616
b099ddc0 3617 PL_statname = NEWSV(66,0);
5a844595 3618 PL_errors = newSVpvn("", 0);
b099ddc0 3619 PL_maxscream = -1;
0b94c7bb
GS		 3620 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3621 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3622 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3623 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3624 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3625 PL_regindent = 0;
3626 PL_reginterp_cnt = 0;
3627 PL_lastscream = Nullsv;
3628 PL_screamfirst = 0;
3629 PL_screamnext = 0;
3630 PL_reg_start_tmp = 0;
3631 PL_reg_start_tmpl = 0;
14ed4b74 3632 PL_reg_poscache = Nullch;
b099ddc0
GS		 3633
3634 /* parent thread's data needs to be locked while we make copy */
3635 MUTEX_LOCK(&t->mutex);
3636
14dd3ad8 3637#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3638 PL_protect = t->Tprotect;
14dd3ad8 3639#endif
312caa8e 3640
b099ddc0
GS		 3641 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3642 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3643 PL_curstash = t->Tcurstash; /* always be set to main? */
3644
6b88bc9c 3645 PL_tainted = t->Ttainted;
84fee439
NIS		 3646 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3647 PL_nrs = newSVsv(t->Tnrs);
3648 PL_rs = SvREFCNT_inc(PL_nrs);
3649 PL_last_in_gv = Nullgv;
7889fe52 3650 PL_ofs_sv = SvREFCNT_inc(PL_ofs_sv);
84fee439
NIS		 3651 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3652 PL_chopset = t->Tchopset;
84fee439
NIS		 3653 PL_bodytarget = newSVsv(t->Tbodytarget);
3654 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3655 if (t->Tformtarget == t->Ttoptarget)
3656 PL_formtarget = PL_toptarget;
3657 else
3658 PL_formtarget = PL_bodytarget;
533c011a 3659
54b9620d
MB		 3660 /* Initialise all per-thread SVs that the template thread used */
3661 svp = AvARRAY(t->threadsv);
93965878 3662 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3663 if (*svp && *svp != &PL_sv_undef) {
199100c8 3664 SV *sv = newSVsv(*svp);
54b9620d 3665 av_store(thr->threadsv, i, sv);
533c011a 3666 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3667 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3668 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3669 (IV)i, t, thr));
199100c8 3670 }
a1d180c4 3671 }
940cb80d 3672 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3673
533c011a
NIS		 3674 MUTEX_LOCK(&PL_threads_mutex);
3675 PL_nthreads++;
3676 thr->tid = ++PL_threadnum;
199100c8
MB		 3677 thr->next = t->next;
3678 thr->prev = t;
3679 t->next = thr;
3680 thr->next->prev = thr;
533c011a 3681 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3682
b099ddc0
GS		 3683 /* done copying parent's state */
3684 MUTEX_UNLOCK(&t->mutex);
3685
a863c7d1 3686#ifdef HAVE_THREAD_INTERN
4f63d024 3687 Perl_init_thread_intern(thr);
a863c7d1 3688#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3689 return thr;
3690}
11343788 3691#endif /* USE_THREADS */
760ac839 3692
4d46a988 3693#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3694/*
3695 * This hack is to force load of "huge" support from libm.a
a1d180c4 3696 * So it is in perl for (say) POSIX to use.
760ac839
LW		 3697 * Needed for SunOS with Sun's 'acc' for example.
3698 */
a1d180c4 3699NV
8ac85365 3700Perl_huge(void)
760ac839 3701{
4d46a988
JH		 3702# if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3703 return HUGE_VALL;
3704# endif
3705 return HUGE_VAL;
760ac839
LW		 3706}
3707#endif
4e35701f 3708
22239a37
NIS		 3709#ifdef PERL_GLOBAL_STRUCT
3710struct perl_vars *
864dbfa3 3711Perl_GetVars(pTHX)
22239a37 3712{
533c011a 3713 return &PL_Vars;
22239a37 3714}
31fb1209
NIS		 3715#endif
3716
3717char **
864dbfa3 3718Perl_get_op_names(pTHX)
31fb1209 3719{
22c35a8c 3720 return PL_op_name;
31fb1209
NIS		 3721}
3722
3723char **
864dbfa3 3724Perl_get_op_descs(pTHX)
31fb1209 3725{
22c35a8c 3726 return PL_op_desc;
31fb1209 3727}
9e6b2b00
GS		 3728
3729char *
864dbfa3 3730Perl_get_no_modify(pTHX)
9e6b2b00 3731{
22c35a8c 3732 return (char*)PL_no_modify;
9e6b2b00
GS		 3733}
3734
3735U32 *
864dbfa3 3736Perl_get_opargs(pTHX)
9e6b2b00 3737{
22c35a8c 3738 return PL_opargs;
9e6b2b00 3739}
51aa15f3 3740
0cb96387
GS		 3741PPADDR_t*
3742Perl_get_ppaddr(pTHX)
3743{
12ae5dfc 3744 return (PPADDR_t*)PL_ppaddr;
0cb96387
GS		 3745}
3746
a6c40364
GS		 3747#ifndef HAS_GETENV_LEN
3748char *
bf4acbe4 3749Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
a6c40364
GS		 3750{
3751 char *env_trans = PerlEnv_getenv(env_elem);
3752 if (env_trans)
3753 *len = strlen(env_trans);
3754 return env_trans;
f675dbe5
CB		 3755}
3756#endif
3757
dc9e4912
GS		 3758
3759MGVTBL*
864dbfa3 3760Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3761{
3762 MGVTBL* result = Null(MGVTBL*);
3763
3764 switch(vtbl_id) {
3765 case want_vtbl_sv:
3766 result = &PL_vtbl_sv;
3767 break;
3768 case want_vtbl_env:
3769 result = &PL_vtbl_env;
3770 break;
3771 case want_vtbl_envelem:
3772 result = &PL_vtbl_envelem;
3773 break;
3774 case want_vtbl_sig:
3775 result = &PL_vtbl_sig;
3776 break;
3777 case want_vtbl_sigelem:
3778 result = &PL_vtbl_sigelem;
3779 break;
3780 case want_vtbl_pack:
3781 result = &PL_vtbl_pack;
3782 break;
3783 case want_vtbl_packelem:
3784 result = &PL_vtbl_packelem;
3785 break;
3786 case want_vtbl_dbline:
3787 result = &PL_vtbl_dbline;
3788 break;
3789 case want_vtbl_isa:
3790 result = &PL_vtbl_isa;
3791 break;
3792 case want_vtbl_isaelem:
3793 result = &PL_vtbl_isaelem;
3794 break;
3795 case want_vtbl_arylen:
3796 result = &PL_vtbl_arylen;
3797 break;
3798 case want_vtbl_glob:
3799 result = &PL_vtbl_glob;
3800 break;
3801 case want_vtbl_mglob:
3802 result = &PL_vtbl_mglob;
3803 break;
3804 case want_vtbl_nkeys:
3805 result = &PL_vtbl_nkeys;
3806 break;
3807 case want_vtbl_taint:
3808 result = &PL_vtbl_taint;
3809 break;
3810 case want_vtbl_substr:
3811 result = &PL_vtbl_substr;
3812 break;
3813 case want_vtbl_vec:
3814 result = &PL_vtbl_vec;
3815 break;
3816 case want_vtbl_pos:
3817 result = &PL_vtbl_pos;
3818 break;
3819 case want_vtbl_bm:
3820 result = &PL_vtbl_bm;
3821 break;
3822 case want_vtbl_fm:
3823 result = &PL_vtbl_fm;
3824 break;
3825 case want_vtbl_uvar:
3826 result = &PL_vtbl_uvar;
3827 break;
3828#ifdef USE_THREADS
3829 case want_vtbl_mutex:
3830 result = &PL_vtbl_mutex;
3831 break;
3832#endif
3833 case want_vtbl_defelem:
3834 result = &PL_vtbl_defelem;
3835 break;
3836 case want_vtbl_regexp:
3837 result = &PL_vtbl_regexp;
3838 break;
3839 case want_vtbl_regdata:
3840 result = &PL_vtbl_regdata;
3841 break;
3842 case want_vtbl_regdatum:
3843 result = &PL_vtbl_regdatum;
3844 break;
3c90161d 3845#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3846 case want_vtbl_collxfrm:
3847 result = &PL_vtbl_collxfrm;
3848 break;
3c90161d 3849#endif
dc9e4912
GS		 3850 case want_vtbl_amagic:
3851 result = &PL_vtbl_amagic;
3852 break;
3853 case want_vtbl_amagicelem:
3854 result = &PL_vtbl_amagicelem;
3855 break;
810b8aa5
GS		 3856 case want_vtbl_backref:
3857 result = &PL_vtbl_backref;
3858 break;
dc9e4912
GS		 3859 }
3860 return result;
3861}
3862
767df6a1 3863I32
864dbfa3 3864Perl_my_fflush_all(pTHX)
767df6a1 3865{
74cac757 3866#if defined(FFLUSH_NULL)
ce720889 3867 return PerlIO_flush(NULL);
767df6a1 3868#else
74cac757
JH		 3869# if defined(HAS__FWALK)
3870 /* undocumented, unprototyped, but very useful BSDism */
3871 extern void _fwalk(int (*)(FILE *));
3872 _fwalk(&fflush);
3873 return 0;
3874# else
767df6a1 3875 long open_max = -1;
74cac757
JH		 3876# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3877# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
d2201af2 3878 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
74cac757
JH		 3879# else
3880# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
767df6a1 3881 open_max = sysconf(_SC_OPEN_MAX);
767df6a1 3882# else
74cac757
JH		 3883# ifdef FOPEN_MAX
3884 open_max = FOPEN_MAX;
767df6a1 3885# else
74cac757
JH		 3886# ifdef OPEN_MAX
3887 open_max = OPEN_MAX;
3888# else
3889# ifdef _NFILE
d2201af2 3890 open_max = _NFILE;
74cac757 3891# endif
767df6a1
JH		 3892# endif
3893# endif
3894# endif
74cac757 3895# endif
767df6a1
JH		 3896 if (open_max > 0) {
3897 long i;
3898 for (i = 0; i < open_max; i++)
d2201af2
AD		 3899 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3900 STDIO_STREAM_ARRAY[i]._file < open_max &&
3901 STDIO_STREAM_ARRAY[i]._flag)
3902 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3903 return 0;
3904 }
74cac757 3905# endif
767df6a1
JH		 3906 SETERRNO(EBADF,RMS$_IFI);
3907 return EOF;
74cac757 3908# endif
767df6a1
JH		 3909#endif
3910}
097ee67d 3911
65202027 3912NV
69282e91
GS		 3913Perl_my_atof(pTHX_ const char* s)
3914{
ebd4816b 3915 NV x = 0.0;
097ee67d 3916#ifdef USE_LOCALE_NUMERIC
d43ce814 3917 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
ebd4816b 3918 NV y;
097ee67d 3919
ebd4816b 3920 Perl_atof2(s, x);
097ee67d 3921 SET_NUMERIC_STANDARD();
ebd4816b 3922 Perl_atof2(s, y);
097ee67d
JH		 3923 SET_NUMERIC_LOCAL();
3924 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3925 return y;
65202027
DS		 3926 }
3927 else
ebd4816b 3928 Perl_atof2(s, x);
097ee67d 3929#else
ebd4816b 3930 Perl_atof2(s, x);
097ee67d 3931#endif
ebd4816b 3932 return x;
097ee67d 3933}
69282e91
GS		 3934
3935void
bc37a18f
RG		 3936Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3937{
9c0fcd4f 3938 char *vile;
4e34385f 3939 I32 warn_type;
bc37a18f 3940 char *func =
66fc2fa5
JH		 3941 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3942 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
bc37a18f
RG		 3943 PL_op_desc[op];
3944 char *pars = OP_IS_FILETEST(op) ? "" : "()";
50952442 3945 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
2dd78f96 3946 "socket" : "filehandle";
9c0fcd4f 3947 char *name = NULL;
bc37a18f 3948
50952442 3949 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
9c0fcd4f 3950 vile = "closed";
4e34385f 3951 warn_type = WARN_CLOSED;
2dd78f96
JH		 3952 }
3953 else {
9c0fcd4f 3954 vile = "unopened";
4e34385f 3955 warn_type = WARN_UNOPENED;
9c0fcd4f 3956 }
bc37a18f 3957
66fc2fa5
JH		 3958 if (gv && isGV(gv)) {
3959 SV *sv = sv_newmortal();
3960 gv_efullname4(sv, gv, Nullch, FALSE);
3961 name = SvPVX(sv);
3962 }
3963
4c80c0b2
NC		 3964 if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {
3965 if (name && *name)
3966 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for %sput",
7889fe52 3967 name,
4c80c0b2
NC		 3968 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3969 else
3970 Perl_warner(aTHX_ WARN_IO, "Filehandle opened only for %sput",
3971 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3972 } else if (name && *name) {
4e34385f 3973 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3974 "%s%s on %s %s %s", func, pars, vile, type, name);
3e11456d 3975 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3976 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3977 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3978 func, pars, name);
2dd78f96
JH		 3979 }
3980 else {
4e34385f 3981 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3982 "%s%s on %s %s", func, pars, vile, type);
3e11456d 3983 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3984 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3985 "\t(Are you trying to call %s%s on dirhandle?)\n",
3986 func, pars);
3987 }
69282e91 3988}
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