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[perl5.git] / util.c
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a0d0e21e 1/* util.c
a687059c 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
64ca3a65 19#ifndef PERL_MICRO
e1dfb34b 20#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 21#include <signal.h>
62b28dd9 22#endif
a687059c 23
36477c24 24#ifndef SIG_ERR
25# define SIG_ERR ((Sighandler_t) -1)
26#endif
64ca3a65 27#endif
36477c24 28
bd4080b3 29/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 30#ifdef I_UNISTD
8990e307
LW		 31# include <unistd.h>
32#endif
33
a687059c
LW		 34#ifdef I_VFORK
35# include <vfork.h>
36#endif
37
94b6baf5
AD		 38/* Put this after #includes because fork and vfork prototypes may
39 conflict.
40*/
41#ifndef HAS_VFORK
42# define vfork fork
43#endif
44
ff68c719 45#ifdef I_SYS_WAIT
46# include <sys/wait.h>
47#endif
48
097ee67d
JH		 49#ifdef I_LOCALE
50# include <locale.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e 55#ifdef LEAKTEST
a0d0e21e 56
8c52afec
IZ		 57long xcount[MAXXCOUNT];
58long lastxcount[MAXXCOUNT];
59long xycount[MAXXCOUNT][MAXYCOUNT];
60long lastxycount[MAXXCOUNT][MAXYCOUNT];
61
a0d0e21e 62#endif
a863c7d1 63
16cebae2
GS		 64#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
65# define FD_CLOEXEC 1 /* NeXT needs this */
66#endif
67
f2517201 68/* paranoid version of system's malloc() */
8d063cd8 69
a687059c
LW		 70/* NOTE: Do not call the next three routines directly. Use the macros
71 * in handy.h, so that we can easily redefine everything to do tracking of
72 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 73 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 74 */
75
bd4080b3 76Malloc_t
4f63d024 77Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 78{
54aff467 79 dTHX;
bd4080b3 80 Malloc_t ptr;
55497cff 81#ifdef HAS_64K_LIMIT
62b28dd9 82 if (size > 0xffff) {
bf49b057 83 PerlIO_printf(Perl_error_log,
16cebae2 84 "Allocation too large: %lx\n", size) FLUSH;
54aff467 85 my_exit(1);
62b28dd9 86 }
55497cff 87#endif /* HAS_64K_LIMIT */
34de22dd
LW		 88#ifdef DEBUGGING
89 if ((long)size < 0)
4f63d024 90 Perl_croak_nocontext("panic: malloc");
34de22dd 91#endif
12ae5dfc 92 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 93 PERL_ALLOC_CHECK(ptr);
97835f67 94 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 95 if (ptr != Nullch)
96 return ptr;
3280af22 97 else if (PL_nomemok)
7c0587c8 98 return Nullch;
8d063cd8 99 else {
bf49b057 100 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 101 my_exit(1);
4e35701f 102 return Nullch;
8d063cd8
LW		 103 }
104 /*NOTREACHED*/
105}
106
f2517201 107/* paranoid version of system's realloc() */
8d063cd8 108
bd4080b3 109Malloc_t
4f63d024 110Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 111{
54aff467 112 dTHX;
bd4080b3 113 Malloc_t ptr;
9a34ef1d 114#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 115 Malloc_t PerlMem_realloc();
ecfc5424 116#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 117
55497cff 118#ifdef HAS_64K_LIMIT
5f05dabc 119 if (size > 0xffff) {
bf49b057 120 PerlIO_printf(Perl_error_log,
5f05dabc 121 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 122 my_exit(1);
5f05dabc 123 }
55497cff 124#endif /* HAS_64K_LIMIT */
7614df0c 125 if (!size) {
f2517201 126 safesysfree(where);
7614df0c
JD		 127 return NULL;
128 }
129
378cc40b 130 if (!where)
f2517201 131 return safesysmalloc(size);
34de22dd
LW		 132#ifdef DEBUGGING
133 if ((long)size < 0)
4f63d024 134 Perl_croak_nocontext("panic: realloc");
34de22dd 135#endif
12ae5dfc 136 ptr = (Malloc_t)PerlMem_realloc(where,size);
da927450 137 PERL_ALLOC_CHECK(ptr);
cd39f2b6 138
97835f67
JH		 139 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
140 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 141
8d063cd8
LW		 142 if (ptr != Nullch)
143 return ptr;
3280af22 144 else if (PL_nomemok)
7c0587c8 145 return Nullch;
8d063cd8 146 else {
bf49b057 147 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 148 my_exit(1);
4e35701f 149 return Nullch;
8d063cd8
LW		 150 }
151 /*NOTREACHED*/
152}
153
f2517201 154/* safe version of system's free() */
8d063cd8 155
54310121 156Free_t
4f63d024 157Perl_safesysfree(Malloc_t where)
8d063cd8 158{
155aba94 159#ifdef PERL_IMPLICIT_SYS
54aff467 160 dTHX;
155aba94 161#endif
97835f67 162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 163 if (where) {
de3bb511 164 /*SUPPRESS 701*/
6ad3d225 165 PerlMem_free(where);
378cc40b 166 }
8d063cd8
LW		 167}
168
f2517201 169/* safe version of system's calloc() */
1050c9ca 170
bd4080b3 171Malloc_t
4f63d024 172Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 173{
54aff467 174 dTHX;
bd4080b3 175 Malloc_t ptr;
1050c9ca 176
55497cff 177#ifdef HAS_64K_LIMIT
5f05dabc 178 if (size * count > 0xffff) {
bf49b057 179 PerlIO_printf(Perl_error_log,
5f05dabc 180 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 181 my_exit(1);
5f05dabc 182 }
55497cff 183#endif /* HAS_64K_LIMIT */
1050c9ca 184#ifdef DEBUGGING
185 if ((long)size < 0 || (long)count < 0)
4f63d024 186 Perl_croak_nocontext("panic: calloc");
1050c9ca 187#endif
0b7c1c42 188 size *= count;
12ae5dfc 189 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 190 PERL_ALLOC_CHECK(ptr);
97835f67 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca 192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca 197 return Nullch;
198 else {
bf49b057 199 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 200 my_exit(1);
4e35701f 201 return Nullch;
1050c9ca 202 }
203 /*NOTREACHED*/
204}
205
a687059c
LW		 206#ifdef LEAKTEST
207
8c52afec
IZ		 208struct mem_test_strut {
209 union {
210 long type;
211 char c[2];
212 } u;
213 long size;
214};
215
216# define ALIGN sizeof(struct mem_test_strut)
217
218# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219# define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221# define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? MAXYCOUNT - 1 \
225 : ( (size) > 40 \
226 ? ((size) - 1)/8 + 5 \
227 : ((size) - 1)/4))
8d063cd8 228
bd4080b3 229Malloc_t
4f63d024 230Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 231{
8c52afec 232 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 233
8c52afec
IZ		 234 xcount[x] += size;
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
8d063cd8 239}
8d063cd8 240
bd4080b3 241Malloc_t
4f63d024 242Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 243{
8c52afec
IZ		 244 char *where = (char*)wh;
245
246 if (!wh)
247 return safexmalloc(0,size);
248
249 {
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
253
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
259 }
a687059c
LW		 260}
261
262void
4f63d024 263Perl_safexfree(Malloc_t wh)
a687059c 264{
79072805 265 I32 x;
8c52afec
IZ		 266 char *where = (char*)wh;
267 MEM_SIZE size;
268
a687059c
LW		 269 if (!where)
270 return;
271 where -= ALIGN;
8c52afec 272 size = sizeof_chunk(where);
a687059c 273 x = where[0] + 100 * where[1];
8c52afec
IZ		 274 xcount[x] -= size;
275 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 276 safefree(where);
277}
278
bd4080b3 279Malloc_t
4f63d024 280Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 281{
8c52afec
IZ		 282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
283 xcount[x] += size;
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
1050c9ca 289}
290
864dbfa3 291STATIC void
cea2e8a9 292S_xstat(pTHX_ int flag)
8d063cd8 293{
8c52afec
IZ		 294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
8d063cd8 296
8c52afec
IZ		 297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] = 0;
299 }
300
bf49b057 301 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 302 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 303 total += xcount[i];
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
306 }
307 if (flag == 0
308 ? xcount[i] /* Have something */
309 : (flag == 2
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 312 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 314 lastxcount[i] = xcount[i];
8c52afec
IZ		 315 for (j = 0; j < MAXYCOUNT; j++) {
316 if ( flag == 0
317 ? xycount[i][j] /* Have something */
318 : (flag == 2
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 321 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ		 322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
bf49b057 327 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 328 }
329 }
bf49b057 330 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 331 }
332 }
333 if (flag != 2) {
bf49b057 334 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
bf49b057 337 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 338 } else {
bf49b057 339 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 340 }
8d063cd8 341 }
bf49b057 342 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 343 }
8d063cd8 344}
a687059c
LW		 345
346#endif /* LEAKTEST */
8d063cd8
LW		 347
348/* copy a string up to some (non-backslashed) delimiter, if any */
349
350char *
864dbfa3 351Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 352{
fc36a67e 353 register I32 tolen;
354 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 355 if (*from == '\\') {
356 if (from[1] == delim)
357 from++;
fc36a67e 358 else {
359 if (to < toend)
360 *to++ = *from;
361 tolen++;
362 from++;
363 }
378cc40b 364 }
bedebaa5 365 else if (*from == delim)
8d063cd8 366 break;
fc36a67e 367 if (to < toend)
368 *to++ = *from;
8d063cd8 369 }
bedebaa5
CS		 370 if (to < toend)
371 *to = '\0';
fc36a67e 372 *retlen = tolen;
8d063cd8
LW		 373 return from;
374}
375
376/* return ptr to little string in big string, NULL if not found */
378cc40b 377/* This routine was donated by Corey Satten. */
8d063cd8
LW		 378
379char *
864dbfa3 380Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 381{
08105a92 382 register const char *s, *x;
79072805 383 register I32 first;
378cc40b 384
a687059c 385 if (!little)
08105a92 386 return (char*)big;
a687059c 387 first = *little++;
378cc40b 388 if (!first)
08105a92 389 return (char*)big;
378cc40b
LW		 390 while (*big) {
391 if (*big++ != first)
392 continue;
393 for (x=big,s=little; *s; /**/ ) {
394 if (!*x)
395 return Nullch;
396 if (*s++ != *x++) {
397 s--;
398 break;
399 }
400 }
401 if (!*s)
08105a92 402 return (char*)(big-1);
378cc40b
LW		 403 }
404 return Nullch;
405}
8d063cd8 406
a687059c
LW		 407/* same as instr but allow embedded nulls */
408
409char *
864dbfa3 410Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 411{
08105a92 412 register const char *s, *x;
79072805 413 register I32 first = *little;
08105a92 414 register const char *littleend = lend;
378cc40b 415
a0d0e21e 416 if (!first && little >= littleend)
08105a92 417 return (char*)big;
de3bb511
LW		 418 if (bigend - big < littleend - little)
419 return Nullch;
a687059c
LW		 420 bigend -= littleend - little++;
421 while (big <= bigend) {
422 if (*big++ != first)
423 continue;
424 for (x=big,s=little; s < littleend; /**/ ) {
425 if (*s++ != *x++) {
426 s--;
427 break;
428 }
429 }
430 if (s >= littleend)
08105a92 431 return (char*)(big-1);
378cc40b 432 }
a687059c
LW		 433 return Nullch;
434}
435
436/* reverse of the above--find last substring */
437
438char *
864dbfa3 439Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 440{
08105a92
GS		 441 register const char *bigbeg;
442 register const char *s, *x;
79072805 443 register I32 first = *little;
08105a92 444 register const char *littleend = lend;
a687059c 445
a0d0e21e 446 if (!first && little >= littleend)
08105a92 447 return (char*)bigend;
a687059c
LW		 448 bigbeg = big;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
451 if (*big-- != first)
452 continue;
453 for (x=big+2,s=little; s < littleend; /**/ ) {
454 if (*s++ != *x++) {
455 s--;
456 break;
457 }
458 }
459 if (s >= littleend)
08105a92 460 return (char*)(big+1);
378cc40b 461 }
a687059c 462 return Nullch;
378cc40b 463}
a687059c 464
bbce6d69 465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
864dbfa3 469Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 470{
36477c24 471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69 475 for (i = 0; i < 256; i++) {
476 if (isUPPER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 478 else if (isLOWER_LC(i))
22c35a8c 479 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 480 else
22c35a8c 481 PL_fold_locale[i] = i;
bbce6d69 482 }
bbce6d69 483
36477c24 484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69 486
487/*
488 * Set up for a new collation locale.
489 */
490void
864dbfa3 491Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 492{
36477c24 493#ifdef USE_LOCALE_COLLATE
494
bbce6d69 495 if (! newcoll) {
3280af22
NIS		 496 if (PL_collation_name) {
497 ++PL_collation_ix;
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
bbce6d69 503 }
504 return;
505 }
506
3280af22
NIS		 507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
508 ++PL_collation_ix;
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 512
bbce6d69 513 {
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516#define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
521 if (mult < 1)
cea2e8a9 522 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
bbce6d69 525 }
bbce6d69 526 }
bbce6d69 527
36477c24 528#endif /* USE_LOCALE_COLLATE */
529}
bbce6d69 530
097ee67d 531void
51371543 532Perl_set_numeric_radix(pTHX)
097ee67d
JH		 533{
534#ifdef USE_LOCALE_NUMERIC
535# ifdef HAS_LOCALECONV
536 struct lconv* lc;
537
538 lc = localeconv();
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
544 else
545 PL_numeric_radix = 0;
546# endif /* HAS_LOCALECONV */
097ee67d
JH		 547#endif /* USE_LOCALE_NUMERIC */
548}
549
bbce6d69 550/*
551 * Set up for a new numeric locale.
552 */
553void
864dbfa3 554Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 555{
36477c24 556#ifdef USE_LOCALE_NUMERIC
557
bbce6d69 558 if (! newnum) {
3280af22
NIS		 559 if (PL_numeric_name) {
560 Safefree(PL_numeric_name);
561 PL_numeric_name = NULL;
562 PL_numeric_standard = TRUE;
563 PL_numeric_local = TRUE;
bbce6d69 564 }
565 return;
566 }
567
3280af22
NIS		 568 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
569 Safefree(PL_numeric_name);
570 PL_numeric_name = savepv(newnum);
571 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
572 PL_numeric_local = TRUE;
51371543 573 set_numeric_radix();
bbce6d69 574 }
36477c24 575
576#endif /* USE_LOCALE_NUMERIC */
bbce6d69 577}
578
579void
864dbfa3 580Perl_set_numeric_standard(pTHX)
bbce6d69 581{
5f05dabc 582#ifdef USE_LOCALE_NUMERIC
583
3280af22 584 if (! PL_numeric_standard) {
bbce6d69 585 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 586 PL_numeric_standard = TRUE;
587 PL_numeric_local = FALSE;
bbce6d69 588 }
5f05dabc 589
590#endif /* USE_LOCALE_NUMERIC */
bbce6d69 591}
592
593void
864dbfa3 594Perl_set_numeric_local(pTHX)
bbce6d69 595{
5f05dabc 596#ifdef USE_LOCALE_NUMERIC
597
3280af22
NIS		 598 if (! PL_numeric_local) {
599 setlocale(LC_NUMERIC, PL_numeric_name);
600 PL_numeric_standard = FALSE;
601 PL_numeric_local = TRUE;
51371543 602 set_numeric_radix();
bbce6d69 603 }
bbce6d69 604
36477c24 605#endif /* USE_LOCALE_NUMERIC */
5f05dabc 606}
36477c24 607
36477c24 608/*
609 * Initialize locale awareness.
610 */
f0c5b223 611int
864dbfa3 612Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 613{
614 int ok = 1;
615 /* returns
616 * 1 = set ok or not applicable,
617 * 0 = fallback to C locale,
618 * -1 = fallback to C locale failed
619 */
bbce6d69 620
36477c24 621#ifdef USE_LOCALE
bbce6d69 622
36477c24 623#ifdef USE_LOCALE_CTYPE
bbce6d69 624 char *curctype = NULL;
36477c24 625#endif /* USE_LOCALE_CTYPE */
626#ifdef USE_LOCALE_COLLATE
bbce6d69 627 char *curcoll = NULL;
36477c24 628#endif /* USE_LOCALE_COLLATE */
629#ifdef USE_LOCALE_NUMERIC
bbce6d69 630 char *curnum = NULL;
36477c24 631#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 632#ifdef __GLIBC__
633 char *language = PerlEnv_getenv("LANGUAGE");
634#endif
76e3520e
GS		 635 char *lc_all = PerlEnv_getenv("LC_ALL");
636 char *lang = PerlEnv_getenv("LANG");
bbce6d69 637 bool setlocale_failure = FALSE;
f0c5b223 638
02b32252
CS		 639#ifdef LOCALE_ENVIRON_REQUIRED
640
641 /*
642 * Ultrix setlocale(..., "") fails if there are no environment
643 * variables from which to get a locale name.
644 */
645
646 bool done = FALSE;
647
648#ifdef LC_ALL
649 if (lang) {
650 if (setlocale(LC_ALL, ""))
651 done = TRUE;
652 else
653 setlocale_failure = TRUE;
654 }
0644c9cb 655 if (!setlocale_failure) {
02b32252 656#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 657 if (! (curctype =
658 setlocale(LC_CTYPE,
659 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 660 ? "" : Nullch)))
661 setlocale_failure = TRUE;
f4182098
AB		 662 else
663 curctype = savepv(curctype);
02b32252
CS		 664#endif /* USE_LOCALE_CTYPE */
665#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 666 if (! (curcoll =
667 setlocale(LC_COLLATE,
668 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 669 ? "" : Nullch)))
670 setlocale_failure = TRUE;
f4182098
AB		 671 else
672 curcoll = savepv(curcoll);
02b32252
CS		 673#endif /* USE_LOCALE_COLLATE */
674#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 675 if (! (curnum =
676 setlocale(LC_NUMERIC,
677 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 678 ? "" : Nullch)))
679 setlocale_failure = TRUE;
f4182098
AB		 680 else
681 curnum = savepv(curnum);
02b32252
CS		 682#endif /* USE_LOCALE_NUMERIC */
683 }
684
0644c9cb 685#endif /* LC_ALL */
02b32252 686
0644c9cb 687#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 688
0644c9cb 689#ifdef LC_ALL
bbce6d69 690 if (! setlocale(LC_ALL, ""))
691 setlocale_failure = TRUE;
0644c9cb 692#endif /* LC_ALL */
bbce6d69 693
0644c9cb 694 if (!setlocale_failure) {
36477c24 695#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 696 if (! (curctype = setlocale(LC_CTYPE, "")))
697 setlocale_failure = TRUE;
f4182098
AB		 698 else
699 curctype = savepv(curctype);
36477c24 700#endif /* USE_LOCALE_CTYPE */
701#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 702 if (! (curcoll = setlocale(LC_COLLATE, "")))
703 setlocale_failure = TRUE;
f4182098
AB		 704 else
705 curcoll = savepv(curcoll);
36477c24 706#endif /* USE_LOCALE_COLLATE */
707#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 708 if (! (curnum = setlocale(LC_NUMERIC, "")))
709 setlocale_failure = TRUE;
f4182098
AB		 710 else
711 curnum = savepv(curnum);
36477c24 712#endif /* USE_LOCALE_NUMERIC */
0644c9cb 713 }
02b32252 714
5f05dabc 715 if (setlocale_failure) {
716 char *p;
717 bool locwarn = (printwarn > 1 ||
155aba94
GS		 718 (printwarn &&
719 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 720
5f05dabc 721 if (locwarn) {
722#ifdef LC_ALL
723
bf49b057 724 PerlIO_printf(Perl_error_log,
5f05dabc 725 "perl: warning: Setting locale failed.\n");
726
727#else /* !LC_ALL */
728
bf49b057 729 PerlIO_printf(Perl_error_log,
bbce6d69 730 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 731#ifdef USE_LOCALE_CTYPE
bbce6d69 732 if (! curctype)
bf49b057 733 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 734#endif /* USE_LOCALE_CTYPE */
735#ifdef USE_LOCALE_COLLATE
bbce6d69 736 if (! curcoll)
bf49b057 737 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 738#endif /* USE_LOCALE_COLLATE */
739#ifdef USE_LOCALE_NUMERIC
bbce6d69 740 if (! curnum)
bf49b057 741 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 742#endif /* USE_LOCALE_NUMERIC */
bf49b057 743 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 744
5f05dabc 745#endif /* LC_ALL */
746
bf49b057 747 PerlIO_printf(Perl_error_log,
bbce6d69 748 "perl: warning: Please check that your locale settings:\n");
ef7eada9 749
3aeabbed 750#ifdef __GLIBC__
bf49b057 751 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 752 "\tLANGUAGE = %c%s%c,\n",
753 language ? '"' : '(',
754 language ? language : "unset",
755 language ? '"' : ')');
756#endif
757
bf49b057 758 PerlIO_printf(Perl_error_log,
bbce6d69 759 "\tLC_ALL = %c%s%c,\n",
760 lc_all ? '"' : '(',
761 lc_all ? lc_all : "unset",
762 lc_all ? '"' : ')');
5f05dabc 763
764 {
765 char **e;
766 for (e = environ; *e; e++) {
767 if (strnEQ(*e, "LC_", 3)
768 && strnNE(*e, "LC_ALL=", 7)
769 && (p = strchr(*e, '=')))
bf49b057 770 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 771 (int)(p - *e), *e, p + 1);
5f05dabc 772 }
773 }
774
bf49b057 775 PerlIO_printf(Perl_error_log,
bbce6d69 776 "\tLANG = %c%s%c\n",
5f05dabc 777 lang ? '"' : '(',
bbce6d69 778 lang ? lang : "unset",
779 lang ? '"' : ')');
ef7eada9 780
bf49b057 781 PerlIO_printf(Perl_error_log,
bbce6d69 782 " are supported and installed on your system.\n");
5f05dabc 783 }
ef7eada9 784
5f05dabc 785#ifdef LC_ALL
786
787 if (setlocale(LC_ALL, "C")) {
788 if (locwarn)
bf49b057 789 PerlIO_printf(Perl_error_log,
5f05dabc 790 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 791 ok = 0;
ef7eada9 792 }
5f05dabc 793 else {
794 if (locwarn)
bf49b057 795 PerlIO_printf(Perl_error_log,
5f05dabc 796 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
797 ok = -1;
798 }
bbce6d69 799
5f05dabc 800#else /* ! LC_ALL */
801
802 if (0
36477c24 803#ifdef USE_LOCALE_CTYPE
5f05dabc 804 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 805#endif /* USE_LOCALE_CTYPE */
806#ifdef USE_LOCALE_COLLATE
5f05dabc 807 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 808#endif /* USE_LOCALE_COLLATE */
809#ifdef USE_LOCALE_NUMERIC
5f05dabc 810 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 811#endif /* USE_LOCALE_NUMERIC */
5f05dabc 812 )
813 {
814 if (locwarn)
bf49b057 815 PerlIO_printf(Perl_error_log,
5f05dabc 816 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
817 ok = -1;
bbce6d69 818 }
5f05dabc 819
bbce6d69 820#endif /* ! LC_ALL */
5f05dabc 821
822#ifdef USE_LOCALE_CTYPE
f4182098 823 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc 824#endif /* USE_LOCALE_CTYPE */
825#ifdef USE_LOCALE_COLLATE
f4182098 826 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc 827#endif /* USE_LOCALE_COLLATE */
828#ifdef USE_LOCALE_NUMERIC
f4182098 829 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 830#endif /* USE_LOCALE_NUMERIC */
ef7eada9 831 }
f4182098 832 else {
ef7eada9 833
36477c24 834#ifdef USE_LOCALE_CTYPE
864dbfa3 835 new_ctype(curctype);
36477c24 836#endif /* USE_LOCALE_CTYPE */
bbce6d69 837
36477c24 838#ifdef USE_LOCALE_COLLATE
864dbfa3 839 new_collate(curcoll);
36477c24 840#endif /* USE_LOCALE_COLLATE */
bbce6d69 841
36477c24 842#ifdef USE_LOCALE_NUMERIC
864dbfa3 843 new_numeric(curnum);
36477c24 844#endif /* USE_LOCALE_NUMERIC */
f4182098 845 }
ef7eada9 846
36477c24 847#endif /* USE_LOCALE */
ef7eada9 848
f4182098
AB		 849#ifdef USE_LOCALE_CTYPE
850 if (curctype != NULL)
851 Safefree(curctype);
852#endif /* USE_LOCALE_CTYPE */
853#ifdef USE_LOCALE_COLLATE
854 if (curcoll != NULL)
855 Safefree(curcoll);
856#endif /* USE_LOCALE_COLLATE */
857#ifdef USE_LOCALE_NUMERIC
858 if (curnum != NULL)
859 Safefree(curnum);
860#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB		 861 return ok;
862}
863
bbce6d69 864/* Backwards compatibility. */
865int
864dbfa3 866Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 867{
864dbfa3 868 return init_i18nl10n(printwarn);
bbce6d69 869}
ef7eada9 870
36477c24 871#ifdef USE_LOCALE_COLLATE
ef7eada9 872
bbce6d69 873/*
874 * mem_collxfrm() is a bit like strxfrm() but with two important
875 * differences. First, it handles embedded NULs. Second, it allocates
876 * a bit more memory than needed for the transformed data itself.
877 * The real transformed data begins at offset sizeof(collationix).
878 * Please see sv_collxfrm() to see how this is used.
879 */
880char *
864dbfa3 881Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 882{
883 char *xbuf;
76e3520e 884 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 885
886 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
887 /* the +1 is for the terminating NUL. */
888
3280af22 889 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 890 New(171, xbuf, xAlloc, char);
bbce6d69 891 if (! xbuf)
892 goto bad;
893
3280af22
NIS		 894 *(U32*)xbuf = PL_collation_ix;
895 xout = sizeof(PL_collation_ix);
bbce6d69 896 for (xin = 0; xin < len; ) {
897 SSize_t xused;
898
899 for (;;) {
76e3520e 900 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 901 if (xused == -1)
902 goto bad;
76e3520e 903 if (xused < xAlloc - xout)
bbce6d69 904 break;
76e3520e
GS		 905 xAlloc = (2 * xAlloc) + 1;
906 Renew(xbuf, xAlloc, char);
bbce6d69 907 if (! xbuf)
908 goto bad;
909 }
ef7eada9 910
bbce6d69 911 xin += strlen(s + xin) + 1;
912 xout += xused;
913
914 /* Embedded NULs are understood but silently skipped
915 * because they make no sense in locale collation. */
916 }
ef7eada9 917
bbce6d69 918 xbuf[xout] = '\0';
3280af22 919 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 920 return xbuf;
921
922 bad:
923 Safefree(xbuf);
924 *xlen = 0;
925 return NULL;
ef7eada9
JH		 926}
927
36477c24 928#endif /* USE_LOCALE_COLLATE */
bbce6d69 929
cf93c79d
IZ		 930#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
931
932/* As a space optimization, we do not compile tables for strings of length
933 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
934 special-cased in fbm_instr().
935
936 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
937
954c1994
GS		 938/*
939=for apidoc fbm_compile
940
941Analyses the string in order to make fast searches on it using fbm_instr()
942-- the Boyer-Moore algorithm.
943
944=cut
945*/
946
378cc40b 947void
7506f9c3 948Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 949{
942e002e
GS		 950 register U8 *s;
951 register U8 *table;
79072805 952 register U32 i;
0b71040e 953 STRLEN len;
79072805
LW		 954 I32 rarest = 0;
955 U32 frequency = 256;
956
cf93c79d
IZ		 957 if (flags & FBMcf_TAIL)
958 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 959 s = (U8*)SvPV_force(sv, len);
07f14f54 960 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 961 if (len == 0) /* TAIL might be on on a zero-length string. */
962 return;
02128f11 963 if (len > 2) {
7506f9c3 964 U8 mlen;
cf93c79d
IZ		 965 unsigned char *sb;
966
7506f9c3 967 if (len > 255)
cf93c79d 968 mlen = 255;
7506f9c3
GS		 969 else
970 mlen = (U8)len;
971 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 972 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 973 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
974 memset((void*)table, mlen, 256);
975 table[-1] = (U8)flags;
02128f11 976 i = 0;
7506f9c3 977 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 978 while (s >= sb) {
979 if (table[*s] == mlen)
7506f9c3 980 table[*s] = (U8)i;
cf93c79d
IZ		 981 s--, i++;
982 }
378cc40b 983 }
bbce6d69 984 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 985 SvVALID_on(sv);
378cc40b 986
463ee0b2 987 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 988 for (i = 0; i < len; i++) {
22c35a8c 989 if (PL_freq[s[i]] < frequency) {
bbce6d69 990 rarest = i;
22c35a8c 991 frequency = PL_freq[s[i]];
378cc40b
LW		 992 }
993 }
79072805
LW		 994 BmRARE(sv) = s[rarest];
995 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 996 BmUSEFUL(sv) = 100; /* Initial value */
997 if (flags & FBMcf_TAIL)
998 SvTAIL_on(sv);
7506f9c3
GS		 999 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1000 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 1001}
1002
cf93c79d
IZ		 1003/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1004/* If SvTAIL is actually due to \Z or \z, this gives false positives
1005 if multiline */
1006
954c1994
GS		 1007/*
1008=for apidoc fbm_instr
1009
1010Returns the location of the SV in the string delimited by C<str> and
1011C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1012does not have to be fbm_compiled, but the search will not be as fast
1013then.
1014
1015=cut
1016*/
1017
378cc40b 1018char *
864dbfa3 1019Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1020{
a687059c 1021 register unsigned char *s;
cf93c79d
IZ		 1022 STRLEN l;
1023 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1024 register STRLEN littlelen = l;
1025 register I32 multiline = flags & FBMrf_MULTILINE;
1026
1027 if (bigend - big < littlelen) {
cf93c79d
IZ		 1028 if ( SvTAIL(littlestr)
1029 && (bigend - big == littlelen - 1)
1030 && (littlelen == 1
12ae5dfc
JH		 1031 || (*big == *little &&
1032 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1033 return (char*)big;
1034 return Nullch;
1035 }
378cc40b 1036
cf93c79d 1037 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1038
1039 if (littlelen == 1) {
1040 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1041 /* Know that bigend != big. */
1042 if (bigend[-1] == '\n')
1043 return (char *)(bigend - 1);
1044 return (char *) bigend;
1045 }
1046 s = big;
1047 while (s < bigend) {
1048 if (*s == *little)
1049 return (char *)s;
1050 s++;
1051 }
1052 if (SvTAIL(littlestr))
1053 return (char *) bigend;
1054 return Nullch;
1055 }
1056 if (!littlelen)
1057 return (char*)big; /* Cannot be SvTAIL! */
1058
1059 /* littlelen is 2 */
1060 if (SvTAIL(littlestr) && !multiline) {
1061 if (bigend[-1] == '\n' && bigend[-2] == *little)
1062 return (char*)bigend - 2;
1063 if (bigend[-1] == *little)
1064 return (char*)bigend - 1;
1065 return Nullch;
1066 }
1067 {
1068 /* This should be better than FBM if c1 == c2, and almost
1069 as good otherwise: maybe better since we do less indirection.
1070 And we save a lot of memory by caching no table. */
1071 register unsigned char c1 = little[0];
1072 register unsigned char c2 = little[1];
1073
1074 s = big + 1;
1075 bigend--;
1076 if (c1 != c2) {
1077 while (s <= bigend) {
1078 if (s[0] == c2) {
1079 if (s[-1] == c1)
1080 return (char*)s - 1;
1081 s += 2;
1082 continue;
3fe6f2dc 1083 }
cf93c79d
IZ		 1084 next_chars:
1085 if (s[0] == c1) {
1086 if (s == bigend)
1087 goto check_1char_anchor;
1088 if (s[1] == c2)
1089 return (char*)s;
1090 else {
1091 s++;
1092 goto next_chars;
1093 }
1094 }
1095 else
1096 s += 2;
1097 }
1098 goto check_1char_anchor;
1099 }
1100 /* Now c1 == c2 */
1101 while (s <= bigend) {
1102 if (s[0] == c1) {
1103 if (s[-1] == c1)
1104 return (char*)s - 1;
1105 if (s == bigend)
1106 goto check_1char_anchor;
1107 if (s[1] == c1)
1108 return (char*)s;
1109 s += 3;
02128f11 1110 }
c277df42 1111 else
cf93c79d 1112 s += 2;
c277df42 1113 }
c277df42 1114 }
cf93c79d
IZ		 1115 check_1char_anchor: /* One char and anchor! */
1116 if (SvTAIL(littlestr) && (*bigend == *little))
1117 return (char *)bigend; /* bigend is already decremented. */
1118 return Nullch;
d48672a2 1119 }
cf93c79d 1120 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1121 s = bigend - littlelen;
7506f9c3 1122 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1123 /* Automatically of length > 2 */
1124 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1125 {
bbce6d69 1126 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1127 }
1128 if (s[1] == *little
1129 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1130 {
cf93c79d 1131 return (char*)s + 1; /* how sweet it is */
7506f9c3 1132 }
02128f11
IZ		 1133 return Nullch;
1134 }
cf93c79d
IZ		 1135 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1136 char *b = ninstr((char*)big,(char*)bigend,
1137 (char*)little, (char*)little + littlelen);
1138
1139 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1140 /* Chop \n from littlestr: */
1141 s = bigend - littlelen + 1;
7506f9c3
GS		 1142 if (*s == *little
1143 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1144 {
3fe6f2dc 1145 return (char*)s;
7506f9c3 1146 }
cf93c79d 1147 return Nullch;
a687059c 1148 }
cf93c79d 1149 return b;
a687059c 1150 }
cf93c79d
IZ		 1151
1152 { /* Do actual FBM. */
1153 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1154 register unsigned char *oldlittle;
1155
1156 if (littlelen > bigend - big)
1157 return Nullch;
1158 --littlelen; /* Last char found by table lookup */
1159
1160 s = big + littlelen;
1161 little += littlelen; /* last char */
1162 oldlittle = little;
1163 if (s < bigend) {
1164 register I32 tmp;
1165
1166 top2:
1167 /*SUPPRESS 560*/
7506f9c3 1168 if ((tmp = table[*s])) {
62b28dd9 1169#ifdef POINTERRIGOR
cf93c79d
IZ		 1170 if (bigend - s > tmp) {
1171 s += tmp;
1172 goto top2;
1173 }
bbce6d69 1174 s += tmp;
62b28dd9 1175#else
cf93c79d 1176 if ((s += tmp) < bigend)
62b28dd9 1177 goto top2;
cf93c79d
IZ		 1178#endif
1179 goto check_end;
1180 }
1181 else { /* less expensive than calling strncmp() */
1182 register unsigned char *olds = s;
1183
1184 tmp = littlelen;
1185
1186 while (tmp--) {
1187 if (*--s == *--little)
1188 continue;
cf93c79d
IZ		 1189 s = olds + 1; /* here we pay the price for failure */
1190 little = oldlittle;
1191 if (s < bigend) /* fake up continue to outer loop */
1192 goto top2;
1193 goto check_end;
1194 }
1195 return (char *)s;
a687059c 1196 }
378cc40b 1197 }
cf93c79d
IZ		 1198 check_end:
1199 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1200 && memEQ((char *)(bigend - littlelen),
1201 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1202 return (char*)bigend - littlelen;
1203 return Nullch;
378cc40b 1204 }
378cc40b
LW		 1205}
1206
c277df42
IZ		 1207/* start_shift, end_shift are positive quantities which give offsets
1208 of ends of some substring of bigstr.
1209 If `last' we want the last occurence.
1210 old_posp is the way of communication between consequent calls if
1211 the next call needs to find the .
1212 The initial *old_posp should be -1.
cf93c79d
IZ		 1213
1214 Note that we take into account SvTAIL, so one can get extra
1215 optimizations if _ALL flag is set.
c277df42
IZ		 1216 */
1217
cf93c79d
IZ		 1218/* If SvTAIL is actually due to \Z or \z, this gives false positives
1219 if PL_multiline. In fact if !PL_multiline the autoritative answer
1220 is not supported yet. */
1221
378cc40b 1222char *
864dbfa3 1223Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1224{
5c0ca799 1225 dTHR;
a687059c
LW		 1226 register unsigned char *s, *x;
1227 register unsigned char *big;
79072805
LW		 1228 register I32 pos;
1229 register I32 previous;
1230 register I32 first;
a687059c 1231 register unsigned char *little;
c277df42 1232 register I32 stop_pos;
a687059c 1233 register unsigned char *littleend;
c277df42 1234 I32 found = 0;
378cc40b 1235
c277df42 1236 if (*old_posp == -1
3280af22 1237 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1238 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1239 cant_find:
1240 if ( BmRARE(littlestr) == '\n'
1241 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1242 little = (unsigned char *)(SvPVX(littlestr));
1243 littleend = little + SvCUR(littlestr);
1244 first = *little++;
1245 goto check_tail;
1246 }
378cc40b 1247 return Nullch;
cf93c79d
IZ		 1248 }
1249
463ee0b2 1250 little = (unsigned char *)(SvPVX(littlestr));
79072805 1251 littleend = little + SvCUR(littlestr);
378cc40b 1252 first = *little++;
c277df42 1253 /* The value of pos we can start at: */
79072805 1254 previous = BmPREVIOUS(littlestr);
463ee0b2 1255 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1256 /* The value of pos we can stop at: */
1257 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1258 if (previous + start_shift > stop_pos) {
1259 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1260 goto check_tail;
1261 return Nullch;
1262 }
c277df42 1263 while (pos < previous + start_shift) {
3280af22 1264 if (!(pos += PL_screamnext[pos]))
cf93c79d 1265 goto cant_find;
378cc40b 1266 }
de3bb511 1267#ifdef POINTERRIGOR
bbce6d69 1268 do {
ef64f398 1269 if (pos >= stop_pos) break;
bbce6d69 1270 if (big[pos-previous] != first)
1271 continue;
1272 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1273 if (*s++ != *x++) {
1274 s--;
1275 break;
de3bb511 1276 }
bbce6d69 1277 }
c277df42
IZ		 1278 if (s == littleend) {
1279 *old_posp = pos;
1280 if (!last) return (char *)(big+pos-previous);
1281 found = 1;
1282 }
6b88bc9c 1283 } while ( pos += PL_screamnext[pos] );
c277df42 1284 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1285#else /* !POINTERRIGOR */
1286 big -= previous;
bbce6d69 1287 do {
ef64f398 1288 if (pos >= stop_pos) break;
bbce6d69 1289 if (big[pos] != first)
1290 continue;
1291 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1292 if (*s++ != *x++) {
1293 s--;
1294 break;
378cc40b 1295 }
bbce6d69 1296 }
c277df42
IZ		 1297 if (s == littleend) {
1298 *old_posp = pos;
1299 if (!last) return (char *)(big+pos);
1300 found = 1;
1301 }
3280af22 1302 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1303 if (last && found)
1304 return (char *)(big+(*old_posp));
de3bb511 1305#endif /* POINTERRIGOR */
cf93c79d
IZ		 1306 check_tail:
1307 if (!SvTAIL(littlestr) || (end_shift > 0))
1308 return Nullch;
1309 /* Ignore the trailing "\n". This code is not microoptimized */
1310 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1311 stop_pos = littleend - little; /* Actual littlestr len */
1312 if (stop_pos == 0)
1313 return (char*)big;
1314 big -= stop_pos;
1315 if (*big == first
12ae5dfc
JH		 1316 && ((stop_pos == 1) ||
1317 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1318 return (char*)big;
1319 return Nullch;
8d063cd8
LW		 1320}
1321
79072805 1322I32
864dbfa3 1323Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1324{
bbce6d69 1325 register U8 *a = (U8 *)s1;
1326 register U8 *b = (U8 *)s2;
79072805 1327 while (len--) {
22c35a8c 1328 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1329 return 1;
1330 a++,b++;
1331 }
1332 return 0;
1333}
1334
1335I32
864dbfa3 1336Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1337{
1338 register U8 *a = (U8 *)s1;
1339 register U8 *b = (U8 *)s2;
1340 while (len--) {
22c35a8c 1341 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1342 return 1;
1343 a++,b++;
79072805
LW		 1344 }
1345 return 0;
1346}
1347
8d063cd8
LW		 1348/* copy a string to a safe spot */
1349
954c1994
GS		 1350/*
1351=for apidoc savepv
1352
1353Copy a string to a safe spot. This does not use an SV.
1354
1355=cut
1356*/
1357
8d063cd8 1358char *
864dbfa3 1359Perl_savepv(pTHX_ const char *sv)
8d063cd8 1360{
a687059c 1361 register char *newaddr;
8d063cd8 1362
79072805
LW		 1363 New(902,newaddr,strlen(sv)+1,char);
1364 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1365 return newaddr;
1366}
1367
a687059c
LW		 1368/* same thing but with a known length */
1369
954c1994
GS		 1370/*
1371=for apidoc savepvn
1372
1373Copy a string to a safe spot. The C<len> indicates number of bytes to
1374copy. This does not use an SV.
1375
1376=cut
1377*/
1378
a687059c 1379char *
864dbfa3 1380Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1381{
1382 register char *newaddr;
1383
1384 New(903,newaddr,len+1,char);
79072805 1385 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1386 newaddr[len] = '\0'; /* is now */
1387 return newaddr;
1388}
1389
cea2e8a9 1390/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1391
76e3520e 1392STATIC SV *
cea2e8a9 1393S_mess_alloc(pTHX)
fc36a67e 1394{
e72dc28c 1395 dTHR;
fc36a67e 1396 SV *sv;
1397 XPVMG *any;
1398
e72dc28c
GS		 1399 if (!PL_dirty)
1400 return sv_2mortal(newSVpvn("",0));
1401
0372dbb6
GS		 1402 if (PL_mess_sv)
1403 return PL_mess_sv;
1404
fc36a67e 1405 /* Create as PVMG now, to avoid any upgrading later */
1406 New(905, sv, 1, SV);
1407 Newz(905, any, 1, XPVMG);
1408 SvFLAGS(sv) = SVt_PVMG;
1409 SvANY(sv) = (void*)any;
1410 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1411 PL_mess_sv = sv;
fc36a67e 1412 return sv;
1413}
1414
c5be433b 1415#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1416char *
1417Perl_form_nocontext(const char* pat, ...)
1418{
1419 dTHX;
c5be433b 1420 char *retval;
cea2e8a9
GS		 1421 va_list args;
1422 va_start(args, pat);
c5be433b 1423 retval = vform(pat, &args);
cea2e8a9 1424 va_end(args);
c5be433b 1425 return retval;
cea2e8a9 1426}
c5be433b 1427#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1428
8990e307 1429char *
864dbfa3 1430Perl_form(pTHX_ const char* pat, ...)
8990e307 1431{
c5be433b 1432 char *retval;
46fc3d4c 1433 va_list args;
46fc3d4c 1434 va_start(args, pat);
c5be433b 1435 retval = vform(pat, &args);
46fc3d4c 1436 va_end(args);
c5be433b
GS		 1437 return retval;
1438}
1439
1440char *
1441Perl_vform(pTHX_ const char *pat, va_list *args)
1442{
1443 SV *sv = mess_alloc();
1444 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1445 return SvPVX(sv);
46fc3d4c 1446}
a687059c 1447
5a844595
GS		 1448#if defined(PERL_IMPLICIT_CONTEXT)
1449SV *
1450Perl_mess_nocontext(const char *pat, ...)
1451{
1452 dTHX;
1453 SV *retval;
1454 va_list args;
1455 va_start(args, pat);
1456 retval = vmess(pat, &args);
1457 va_end(args);
1458 return retval;
1459}
1460#endif /* PERL_IMPLICIT_CONTEXT */
1461
06bf62c7 1462SV *
5a844595
GS		 1463Perl_mess(pTHX_ const char *pat, ...)
1464{
1465 SV *retval;
1466 va_list args;
1467 va_start(args, pat);
1468 retval = vmess(pat, &args);
1469 va_end(args);
1470 return retval;
1471}
1472
1473SV *
1474Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1475{
e72dc28c 1476 SV *sv = mess_alloc();
46fc3d4c 1477 static char dgd[] = " during global destruction.\n";
1478
fc36a67e 1479 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1480 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1481 dTHR;
57843af0 1482 if (CopLINE(PL_curcop))
ed094faf
GS		 1483 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1484 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1485 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1486 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1487 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1488 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1489 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1490 line_mode ? "line" : "chunk",
1491 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1492 }
9efbc0eb 1493#ifdef USE_THREADS
e8e6f333
GS		 1494 if (thr->tid)
1495 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1496#endif
515f54a1 1497 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1498 }
06bf62c7 1499 return sv;
a687059c
LW		 1500}
1501
c5be433b
GS		 1502OP *
1503Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1504{
5dc0d613 1505 dTHR;
36477c24 1506 char *message;
3280af22 1507 int was_in_eval = PL_in_eval;
36477c24 1508 HV *stash;
1509 GV *gv;
1510 CV *cv;
06bf62c7
GS		 1511 SV *msv;
1512 STRLEN msglen;
36477c24 1513
bf49b057 1514 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1515 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1516 thr, PL_curstack, PL_mainstack));
36477c24 1517
06bf62c7 1518 if (pat) {
5a844595
GS		 1519 msv = vmess(pat, args);
1520 if (PL_errors && SvCUR(PL_errors)) {
1521 sv_catsv(PL_errors, msv);
1522 message = SvPV(PL_errors, msglen);
1523 SvCUR_set(PL_errors, 0);
1524 }
1525 else
1526 message = SvPV(msv,msglen);
06bf62c7
GS		 1527 }
1528 else {
1529 message = Nullch;
0f79a09d 1530 msglen = 0;
06bf62c7 1531 }
36477c24 1532
bf49b057 1533 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1534 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1535 thr, message, PL_diehook));
3280af22 1536 if (PL_diehook) {
cea2e8a9 1537 /* sv_2cv might call Perl_croak() */
3280af22 1538 SV *olddiehook = PL_diehook;
1738f5c4 1539 ENTER;
3280af22
NIS		 1540 SAVESPTR(PL_diehook);
1541 PL_diehook = Nullsv;
1738f5c4
CS		 1542 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1543 LEAVE;
1544 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1545 dSP;
774d564b 1546 SV *msg;
1547
1548 ENTER;
3a1f2dc9 1549 save_re_context();
79cb57f6 1550 if (message) {
06bf62c7 1551 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1552 SvREADONLY_on(msg);
1553 SAVEFREESV(msg);
1554 }
1555 else {
1556 msg = ERRSV;
1557 }
1738f5c4 1558
e788e7d3 1559 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1560 PUSHMARK(SP);
1738f5c4
CS		 1561 XPUSHs(msg);
1562 PUTBACK;
0cdb2077 1563 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1564 POPSTACK;
774d564b 1565 LEAVE;
1738f5c4 1566 }
36477c24 1567 }
1568
06bf62c7 1569 PL_restartop = die_where(message, msglen);
bf49b057 1570 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1571 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1572 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1573 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1574 JMPENV_JUMP(3);
3280af22 1575 return PL_restartop;
36477c24 1576}
1577
c5be433b 1578#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1579OP *
1580Perl_die_nocontext(const char* pat, ...)
a687059c 1581{
cea2e8a9
GS		 1582 dTHX;
1583 OP *o;
a687059c 1584 va_list args;
cea2e8a9 1585 va_start(args, pat);
c5be433b 1586 o = vdie(pat, &args);
cea2e8a9
GS		 1587 va_end(args);
1588 return o;
1589}
c5be433b 1590#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1591
1592OP *
1593Perl_die(pTHX_ const char* pat, ...)
1594{
1595 OP *o;
1596 va_list args;
1597 va_start(args, pat);
c5be433b 1598 o = vdie(pat, &args);
cea2e8a9
GS		 1599 va_end(args);
1600 return o;
1601}
1602
c5be433b
GS		 1603void
1604Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1605{
1606 dTHR;
de3bb511 1607 char *message;
748a9306
LW		 1608 HV *stash;
1609 GV *gv;
1610 CV *cv;
06bf62c7
GS		 1611 SV *msv;
1612 STRLEN msglen;
a687059c 1613
9983fa3c
GS		 1614 if (pat) {
1615 msv = vmess(pat, args);
1616 if (PL_errors && SvCUR(PL_errors)) {
1617 sv_catsv(PL_errors, msv);
1618 message = SvPV(PL_errors, msglen);
1619 SvCUR_set(PL_errors, 0);
1620 }
1621 else
1622 message = SvPV(msv,msglen);
1623 }
1624 else {
1625 message = Nullch;
1626 msglen = 0;
5a844595 1627 }
5a844595 1628
b900a521
JH		 1629 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1630 PTR2UV(thr), message));
5a844595 1631
3280af22 1632 if (PL_diehook) {
cea2e8a9 1633 /* sv_2cv might call Perl_croak() */
3280af22 1634 SV *olddiehook = PL_diehook;
1738f5c4 1635 ENTER;
3280af22
NIS		 1636 SAVESPTR(PL_diehook);
1637 PL_diehook = Nullsv;
20cec16a 1638 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1639 LEAVE;
1640 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1641 dSP;
774d564b 1642 SV *msg;
1643
1644 ENTER;
3a1f2dc9 1645 save_re_context();
9983fa3c
GS		 1646 if (message) {
1647 msg = newSVpvn(message, msglen);
1648 SvREADONLY_on(msg);
1649 SAVEFREESV(msg);
1650 }
1651 else {
1652 msg = ERRSV;
1653 }
20cec16a 1654
e788e7d3 1655 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1656 PUSHMARK(SP);
1738f5c4 1657 XPUSHs(msg);
20cec16a 1658 PUTBACK;
864dbfa3 1659 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1660 POPSTACK;
774d564b 1661 LEAVE;
20cec16a 1662 }
748a9306 1663 }
3280af22 1664 if (PL_in_eval) {
06bf62c7 1665 PL_restartop = die_where(message, msglen);
6224f72b 1666 JMPENV_JUMP(3);
a0d0e21e 1667 }
d175a3f0
GS		 1668 {
1669#ifdef USE_SFIO
1670 /* SFIO can really mess with your errno */
1671 int e = errno;
1672#endif
bf49b057
GS		 1673 PerlIO *serr = Perl_error_log;
1674
1675 PerlIO_write(serr, message, msglen);
1676 (void)PerlIO_flush(serr);
d175a3f0
GS		 1677#ifdef USE_SFIO
1678 errno = e;
1679#endif
1680 }
f86702cc 1681 my_failure_exit();
a687059c
LW		 1682}
1683
c5be433b 1684#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1685void
cea2e8a9 1686Perl_croak_nocontext(const char *pat, ...)
a687059c 1687{
cea2e8a9 1688 dTHX;
a687059c 1689 va_list args;
cea2e8a9 1690 va_start(args, pat);
c5be433b 1691 vcroak(pat, &args);
cea2e8a9
GS		 1692 /* NOTREACHED */
1693 va_end(args);
1694}
1695#endif /* PERL_IMPLICIT_CONTEXT */
1696
954c1994
GS		 1697/*
1698=for apidoc croak
1699
9983fa3c
GS		 1700This is the XSUB-writer's interface to Perl's C<die> function.
1701Normally use this function the same way you use the C C<printf>
1702function. See C<warn>.
1703
1704If you want to throw an exception object, assign the object to
1705C<$@> and then pass C<Nullch> to croak():
1706
1707 errsv = get_sv("@", TRUE);
1708 sv_setsv(errsv, exception_object);
1709 croak(Nullch);
954c1994
GS		 1710
1711=cut
1712*/
1713
cea2e8a9
GS		 1714void
1715Perl_croak(pTHX_ const char *pat, ...)
1716{
1717 va_list args;
1718 va_start(args, pat);
c5be433b 1719 vcroak(pat, &args);
cea2e8a9
GS		 1720 /* NOTREACHED */
1721 va_end(args);
1722}
1723
c5be433b
GS		 1724void
1725Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1726{
de3bb511 1727 char *message;
748a9306
LW		 1728 HV *stash;
1729 GV *gv;
1730 CV *cv;
06bf62c7
GS		 1731 SV *msv;
1732 STRLEN msglen;
a687059c 1733
5a844595 1734 msv = vmess(pat, args);
06bf62c7 1735 message = SvPV(msv, msglen);
a687059c 1736
3280af22 1737 if (PL_warnhook) {
cea2e8a9 1738 /* sv_2cv might call Perl_warn() */
11343788 1739 dTHR;
3280af22 1740 SV *oldwarnhook = PL_warnhook;
1738f5c4 1741 ENTER;
3280af22
NIS		 1742 SAVESPTR(PL_warnhook);
1743 PL_warnhook = Nullsv;
20cec16a 1744 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1745 LEAVE;
1746 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1747 dSP;
774d564b 1748 SV *msg;
1749
1750 ENTER;
3a1f2dc9 1751 save_re_context();
06bf62c7 1752 msg = newSVpvn(message, msglen);
774d564b 1753 SvREADONLY_on(msg);
1754 SAVEFREESV(msg);
1755
e788e7d3 1756 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1757 PUSHMARK(SP);
774d564b 1758 XPUSHs(msg);
20cec16a 1759 PUTBACK;
864dbfa3 1760 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1761 POPSTACK;
774d564b 1762 LEAVE;
20cec16a 1763 return;
1764 }
748a9306 1765 }
bf49b057
GS		 1766 {
1767 PerlIO *serr = Perl_error_log;
1768
1769 PerlIO_write(serr, message, msglen);
a687059c 1770#ifdef LEAKTEST
bf49b057
GS		 1771 DEBUG_L(*message == '!'
1772 ? (xstat(message[1]=='!'
1773 ? (message[2]=='!' ? 2 : 1)
1774 : 0)
1775 , 0)
1776 : 0);
a687059c 1777#endif
bf49b057
GS		 1778 (void)PerlIO_flush(serr);
1779 }
a687059c 1780}
8d063cd8 1781
c5be433b 1782#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1783void
1784Perl_warn_nocontext(const char *pat, ...)
1785{
1786 dTHX;
1787 va_list args;
1788 va_start(args, pat);
c5be433b 1789 vwarn(pat, &args);
cea2e8a9
GS		 1790 va_end(args);
1791}
1792#endif /* PERL_IMPLICIT_CONTEXT */
1793
954c1994
GS		 1794/*
1795=for apidoc warn
1796
1797This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1798function the same way you use the C C<printf> function. See
1799C<croak>.
1800
1801=cut
1802*/
1803
cea2e8a9
GS		 1804void
1805Perl_warn(pTHX_ const char *pat, ...)
1806{
1807 va_list args;
1808 va_start(args, pat);
c5be433b 1809 vwarn(pat, &args);
cea2e8a9
GS		 1810 va_end(args);
1811}
1812
c5be433b
GS		 1813#if defined(PERL_IMPLICIT_CONTEXT)
1814void
1815Perl_warner_nocontext(U32 err, const char *pat, ...)
1816{
1817 dTHX;
1818 va_list args;
1819 va_start(args, pat);
1820 vwarner(err, pat, &args);
1821 va_end(args);
1822}
1823#endif /* PERL_IMPLICIT_CONTEXT */
1824
599cee73 1825void
864dbfa3 1826Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1827{
1828 va_list args;
c5be433b
GS		 1829 va_start(args, pat);
1830 vwarner(err, pat, &args);
1831 va_end(args);
1832}
1833
1834void
1835Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1836{
1837 dTHR;
599cee73
PM		 1838 char *message;
1839 HV *stash;
1840 GV *gv;
1841 CV *cv;
06bf62c7
GS		 1842 SV *msv;
1843 STRLEN msglen;
599cee73 1844
5a844595 1845 msv = vmess(pat, args);
06bf62c7 1846 message = SvPV(msv, msglen);
599cee73
PM		 1847
1848 if (ckDEAD(err)) {
1849#ifdef USE_THREADS
b900a521 1850 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1851#endif /* USE_THREADS */
1852 if (PL_diehook) {
cea2e8a9 1853 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1854 SV *olddiehook = PL_diehook;
1855 ENTER;
1856 SAVESPTR(PL_diehook);
1857 PL_diehook = Nullsv;
1858 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1859 LEAVE;
1860 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1861 dSP;
1862 SV *msg;
1863
1864 ENTER;
3a1f2dc9 1865 save_re_context();
06bf62c7 1866 msg = newSVpvn(message, msglen);
599cee73
PM		 1867 SvREADONLY_on(msg);
1868 SAVEFREESV(msg);
1869
3a1f2dc9 1870 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1871 PUSHMARK(sp);
1872 XPUSHs(msg);
1873 PUTBACK;
864dbfa3 1874 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1875 POPSTACK;
599cee73
PM		 1876 LEAVE;
1877 }
1878 }
1879 if (PL_in_eval) {
06bf62c7 1880 PL_restartop = die_where(message, msglen);
599cee73
PM		 1881 JMPENV_JUMP(3);
1882 }
bf49b057
GS		 1883 {
1884 PerlIO *serr = Perl_error_log;
1885 PerlIO_write(serr, message, msglen);
1886 (void)PerlIO_flush(serr);
1887 }
599cee73
PM		 1888 my_failure_exit();
1889
1890 }
1891 else {
1892 if (PL_warnhook) {
cea2e8a9 1893 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1894 dTHR;
1895 SV *oldwarnhook = PL_warnhook;
1896 ENTER;
1897 SAVESPTR(PL_warnhook);
1898 PL_warnhook = Nullsv;
1899 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1900 LEAVE;
599cee73
PM		 1901 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1902 dSP;
1903 SV *msg;
1904
1905 ENTER;
3a1f2dc9 1906 save_re_context();
06bf62c7 1907 msg = newSVpvn(message, msglen);
599cee73
PM		 1908 SvREADONLY_on(msg);
1909 SAVEFREESV(msg);
1910
3a1f2dc9 1911 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1912 PUSHMARK(sp);
1913 XPUSHs(msg);
1914 PUTBACK;
864dbfa3 1915 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1916 POPSTACK;
599cee73
PM		 1917 LEAVE;
1918 return;
1919 }
1920 }
bf49b057
GS		 1921 {
1922 PerlIO *serr = Perl_error_log;
1923 PerlIO_write(serr, message, msglen);
599cee73 1924#ifdef LEAKTEST
06247ec9
JH		 1925 DEBUG_L(*message == '!'
1926 ? (xstat(message[1]=='!'
1927 ? (message[2]=='!' ? 2 : 1)
1928 : 0)
1929 , 0)
1930 : 0);
599cee73 1931#endif
bf49b057
GS		 1932 (void)PerlIO_flush(serr);
1933 }
599cee73
PM		 1934 }
1935}
1936
a0d0e21e 1937#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1938#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1939void
864dbfa3 1940Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1941{
f2517201
GS		 1942#ifndef PERL_USE_SAFE_PUTENV
1943 /* most putenv()s leak, so we manipulate environ directly */
79072805 1944 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1945
3280af22 1946 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1947 I32 j;
1948 I32 max;
fe14fcc3
LW		 1949 char **tmpenv;
1950
de3bb511 1951 /*SUPPRESS 530*/
fe14fcc3 1952 for (max = i; environ[max]; max++) ;
f2517201
GS		 1953 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1954 for (j=0; j<max; j++) { /* copy environment */
1955 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1956 strcpy(tmpenv[j], environ[j]);
1957 }
fe14fcc3
LW		 1958 tmpenv[max] = Nullch;
1959 environ = tmpenv; /* tell exec where it is now */
1960 }
a687059c 1961 if (!val) {
f2517201 1962 safesysfree(environ[i]);
a687059c
LW		 1963 while (environ[i]) {
1964 environ[i] = environ[i+1];
1965 i++;
1966 }
1967 return;
1968 }
8d063cd8 1969 if (!environ[i]) { /* does not exist yet */
f2517201 1970 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1971 environ[i+1] = Nullch; /* make sure it's null terminated */
1972 }
fe14fcc3 1973 else
f2517201
GS		 1974 safesysfree(environ[i]);
1975 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1976
a687059c 1977 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1978
1979#else /* PERL_USE_SAFE_PUTENV */
1980 char *new_env;
1981
1982 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1983 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1984 (void)putenv(new_env);
1985#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1986}
1987
d308986b
GS		 1988#else /* WIN32 || __CYGWIN__ */
1989#if defined(__CYGWIN__)
1cab015a
EF		 1990/*
1991 * Save environ of perl.exe, currently Cygwin links in separate environ's
1992 * for each exe/dll. Probably should be a member of impure_ptr.
1993 */
1994static char ***Perl_main_environ;
1995
1996EXTERN_C void
1997Perl_my_setenv_init(char ***penviron)
1998{
1999 Perl_main_environ = penviron;
2000}
2001
2002void
0a9fdc5d 2003Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 2004{
2005 /* You can not directly manipulate the environ[] array because
2006 * the routines do some additional work that syncs the Cygwin
2007 * environment with the Windows environment.
2008 */
2009 char *oldstr = environ[setenv_getix(nam)];
2010
2011 if (!val) {
2012 if (!oldstr)
2013 return;
2014 unsetenv(nam);
d702ae42 2015 safesysfree(oldstr);
1cab015a
EF		 2016 return;
2017 }
2018 setenv(nam, val, 1);
2019 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
2020 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 2021 safesysfree(oldstr);
1cab015a 2022}
3e3baf6d 2023#else /* if WIN32 */
68dc0745 2024
2025void
864dbfa3 2026Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2027{
3e3baf6d
TB		 2028
2029#ifdef USE_WIN32_RTL_ENV
2030
68dc0745 2031 register char *envstr;
2032 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 2033 STRLEN vallen;
2034 char *oldstr = environ[setenv_getix(nam)];
2035
2036 /* putenv() has totally broken semantics in both the Borland
2037 * and Microsoft CRTLs. They either store the passed pointer in
2038 * the environment without making a copy, or make a copy and don't
2039 * free it. And on top of that, they dont free() old entries that
2040 * are being replaced/deleted. This means the caller must
2041 * free any old entries somehow, or we end up with a memory
2042 * leak every time my_setenv() is called. One might think
2043 * one could directly manipulate environ[], like the UNIX code
2044 * above, but direct changes to environ are not allowed when
2045 * calling putenv(), since the RTLs maintain an internal
2046 * *copy* of environ[]. Bad, bad, *bad* stink.
2047 * GSAR 97-06-07
2048 */
68dc0745 2049
3e3baf6d
TB		 2050 if (!val) {
2051 if (!oldstr)
2052 return;
2053 val = "";
2054 vallen = 0;
2055 }
2056 else
2057 vallen = strlen(val);
f2517201 2058 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2059 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2060 (void)PerlEnv_putenv(envstr);
3e3baf6d 2061 if (oldstr)
f2517201 2062 safesysfree(oldstr);
3e3baf6d 2063#ifdef _MSC_VER
f2517201 2064 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2065#endif
2066
2067#else /* !USE_WIN32_RTL_ENV */
2068
ac5c734f
GS		 2069 register char *envstr;
2070 STRLEN len = strlen(nam) + 3;
2071 if (!val) {
2072 val = "";
2073 }
2074 len += strlen(val);
2075 New(904, envstr, len, char);
2076 (void)sprintf(envstr,"%s=%s",nam,val);
2077 (void)PerlEnv_putenv(envstr);
2078 Safefree(envstr);
3e3baf6d
TB		 2079
2080#endif
2081}
2082
2083#endif /* WIN32 */
1cab015a 2084#endif
3e3baf6d
TB		 2085
2086I32
864dbfa3 2087Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2088{
2089 register I32 i, len = strlen(nam);
2090
2091 for (i = 0; environ[i]; i++) {
2092 if (
2093#ifdef WIN32
2094 strnicmp(environ[i],nam,len) == 0
2095#else
2096 strnEQ(environ[i],nam,len)
2097#endif
2098 && environ[i][len] == '=')
2099 break; /* strnEQ must come first to avoid */
2100 } /* potential SEGV's */
2101 return i;
68dc0745 2102}
2103
a0d0e21e 2104#endif /* !VMS */
378cc40b 2105
16d20bd9 2106#ifdef UNLINK_ALL_VERSIONS
79072805 2107I32
864dbfa3 2108Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2109{
79072805 2110 I32 i;
378cc40b 2111
6ad3d225 2112 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2113 return i ? 0 : -1;
2114}
2115#endif
2116
7a3f2258 2117/* this is a drop-in replacement for bcopy() */
85e6fe83 2118#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2119char *
7a3f2258 2120Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2121{
2122 char *retval = to;
2123
7c0587c8
LW		 2124 if (from - to >= 0) {
2125 while (len--)
2126 *to++ = *from++;
2127 }
2128 else {
2129 to += len;
2130 from += len;
2131 while (len--)
faf8582f 2132 *(--to) = *(--from);
7c0587c8 2133 }
378cc40b
LW		 2134 return retval;
2135}
ffed7fef 2136#endif
378cc40b 2137
7a3f2258 2138/* this is a drop-in replacement for memset() */
fc36a67e 2139#ifndef HAS_MEMSET
2140void *
7a3f2258 2141Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2142{
2143 char *retval = loc;
2144
2145 while (len--)
2146 *loc++ = ch;
2147 return retval;
2148}
2149#endif
2150
7a3f2258 2151/* this is a drop-in replacement for bzero() */
7c0587c8 2152#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2153char *
7a3f2258 2154Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2155{
2156 char *retval = loc;
2157
2158 while (len--)
2159 *loc++ = 0;
2160 return retval;
2161}
2162#endif
7c0587c8 2163
7a3f2258 2164/* this is a drop-in replacement for memcmp() */
36477c24 2165#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2166I32
7a3f2258 2167Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2168{
36477c24 2169 register U8 *a = (U8 *)s1;
2170 register U8 *b = (U8 *)s2;
79072805 2171 register I32 tmp;
7c0587c8
LW		 2172
2173 while (len--) {
36477c24 2174 if (tmp = *a++ - *b++)
7c0587c8
LW		 2175 return tmp;
2176 }
2177 return 0;
2178}
36477c24 2179#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2180
fe14fcc3 2181#ifndef HAS_VPRINTF
a687059c 2182
85e6fe83 2183#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2184char *
2185#else
2186int
2187#endif
08105a92 2188vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2189{
2190 FILE fakebuf;
2191
2192 fakebuf._ptr = dest;
2193 fakebuf._cnt = 32767;
35c8bce7
LW		 2194#ifndef _IOSTRG
2195#define _IOSTRG 0
2196#endif
a687059c
LW		 2197 fakebuf._flag = _IOWRT|_IOSTRG;
2198 _doprnt(pat, args, &fakebuf); /* what a kludge */
2199 (void)putc('\0', &fakebuf);
85e6fe83 2200#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2201 return(dest);
2202#else
2203 return 0; /* perl doesn't use return value */
2204#endif
2205}
2206
fe14fcc3 2207#endif /* HAS_VPRINTF */
a687059c
LW		 2208
2209#ifdef MYSWAP
ffed7fef 2210#if BYTEORDER != 0x4321
a687059c 2211short
864dbfa3 2212Perl_my_swap(pTHX_ short s)
a687059c
LW		 2213{
2214#if (BYTEORDER & 1) == 0
2215 short result;
2216
2217 result = ((s & 255) << 8) + ((s >> 8) & 255);
2218 return result;
2219#else
2220 return s;
2221#endif
2222}
2223
2224long
864dbfa3 2225Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2226{
2227 union {
2228 long result;
ffed7fef 2229 char c[sizeof(long)];
a687059c
LW		 2230 } u;
2231
ffed7fef 2232#if BYTEORDER == 0x1234
a687059c
LW		 2233 u.c[0] = (l >> 24) & 255;
2234 u.c[1] = (l >> 16) & 255;
2235 u.c[2] = (l >> 8) & 255;
2236 u.c[3] = l & 255;
2237 return u.result;
2238#else
ffed7fef 2239#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2240 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2241#else
79072805
LW		 2242 register I32 o;
2243 register I32 s;
a687059c 2244
ffed7fef
LW		 2245 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2246 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2247 }
2248 return u.result;
2249#endif
2250#endif
2251}
2252
2253long
864dbfa3 2254Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2255{
2256 union {
2257 long l;
ffed7fef 2258 char c[sizeof(long)];
a687059c
LW		 2259 } u;
2260
ffed7fef 2261#if BYTEORDER == 0x1234
a687059c
LW		 2262 u.c[0] = (l >> 24) & 255;
2263 u.c[1] = (l >> 16) & 255;
2264 u.c[2] = (l >> 8) & 255;
2265 u.c[3] = l & 255;
2266 return u.l;
2267#else
ffed7fef 2268#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2269 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2270#else
79072805
LW		 2271 register I32 o;
2272 register I32 s;
a687059c
LW		 2273
2274 u.l = l;
2275 l = 0;
ffed7fef
LW		 2276 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2277 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2278 }
2279 return l;
2280#endif
2281#endif
2282}
2283
ffed7fef 2284#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2285#endif /* MYSWAP */
2286
2287/*
2288 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2289 * If these functions are defined,
2290 * the BYTEORDER is neither 0x1234 nor 0x4321.
2291 * However, this is not assumed.
2292 * -DWS
2293 */
2294
2295#define HTOV(name,type) \
2296 type \
ba106d47 2297 name (register type n) \
988174c1
LW		 2298 { \
2299 union { \
2300 type value; \
2301 char c[sizeof(type)]; \
2302 } u; \
79072805
LW		 2303 register I32 i; \
2304 register I32 s; \
988174c1
LW		 2305 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2306 u.c[i] = (n >> s) & 0xFF; \
2307 } \
2308 return u.value; \
2309 }
2310
2311#define VTOH(name,type) \
2312 type \
ba106d47 2313 name (register type n) \
988174c1
LW		 2314 { \
2315 union { \
2316 type value; \
2317 char c[sizeof(type)]; \
2318 } u; \
79072805
LW		 2319 register I32 i; \
2320 register I32 s; \
988174c1
LW		 2321 u.value = n; \
2322 n = 0; \
2323 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2324 n += (u.c[i] & 0xFF) << s; \
2325 } \
2326 return n; \
2327 }
2328
2329#if defined(HAS_HTOVS) && !defined(htovs)
2330HTOV(htovs,short)
2331#endif
2332#if defined(HAS_HTOVL) && !defined(htovl)
2333HTOV(htovl,long)
2334#endif
2335#if defined(HAS_VTOHS) && !defined(vtohs)
2336VTOH(vtohs,short)
2337#endif
2338#if defined(HAS_VTOHL) && !defined(vtohl)
2339VTOH(vtohl,long)
2340#endif
a687059c 2341
5f05dabc 2342 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2343#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2344PerlIO *
864dbfa3 2345Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2346{
2347 int p[2];
8ac85365 2348 register I32 This, that;
d8a83dd3 2349 register Pid_t pid;
79072805 2350 SV *sv;
1738f5c4 2351 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2352 I32 did_pipes = 0;
2353 int pp[2];
a687059c 2354
45bc9206 2355 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2356#ifdef OS2
2357 if (doexec) {
23da6c43 2358 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2359 }
2360#endif
8ac85365
NIS		 2361 This = (*mode == 'w');
2362 that = !This;
3280af22 2363 if (doexec && PL_tainting) {
bbce6d69 2364 taint_env();
2365 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2366 }
c2267164
IZ		 2367 if (PerlProc_pipe(p) < 0)
2368 return Nullfp;
e446cec8
IZ		 2369 if (doexec && PerlProc_pipe(pp) >= 0)
2370 did_pipes = 1;
a687059c
LW		 2371 while ((pid = (doexec?vfork():fork())) < 0) {
2372 if (errno != EAGAIN) {
6ad3d225 2373 PerlLIO_close(p[This]);
e446cec8
IZ		 2374 if (did_pipes) {
2375 PerlLIO_close(pp[0]);
2376 PerlLIO_close(pp[1]);
2377 }
a687059c 2378 if (!doexec)
cea2e8a9 2379 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2380 return Nullfp;
2381 }
2382 sleep(5);
2383 }
2384 if (pid == 0) {
79072805
LW		 2385 GV* tmpgv;
2386
30ac6d9b
GS		 2387#undef THIS
2388#undef THAT
a687059c 2389#define THIS that
8ac85365 2390#define THAT This
6ad3d225 2391 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2392 if (did_pipes) {
2393 PerlLIO_close(pp[0]);
2394#if defined(HAS_FCNTL) && defined(F_SETFD)
2395 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2396#endif
2397 }
a687059c 2398 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2399 PerlLIO_dup2(p[THIS], *mode == 'r');
2400 PerlLIO_close(p[THIS]);
a687059c 2401 }
4435c477 2402#ifndef OS2
a687059c 2403 if (doexec) {
a0d0e21e 2404#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2405 int fd;
2406
2407#ifndef NOFILE
2408#define NOFILE 20
2409#endif
6b88bc9c 2410 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2411 if (fd != pp[1])
2412 PerlLIO_close(fd);
ae986130 2413#endif
e446cec8 2414 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2415 PerlProc__exit(1);
a687059c 2416 }
4435c477 2417#endif /* defined OS2 */
de3bb511 2418 /*SUPPRESS 560*/
155aba94 2419 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2420 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2421 PL_forkprocess = 0;
2422 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2423 return Nullfp;
2424#undef THIS
2425#undef THAT
2426 }
62b28dd9 2427 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2428 PerlLIO_close(p[that]);
e446cec8
IZ		 2429 if (did_pipes)
2430 PerlLIO_close(pp[1]);
8ac85365 2431 if (p[that] < p[This]) {
6ad3d225
GS		 2432 PerlLIO_dup2(p[This], p[that]);
2433 PerlLIO_close(p[This]);
8ac85365 2434 p[This] = p[that];
62b28dd9 2435 }
4755096e 2436 LOCK_FDPID_MUTEX;
3280af22 2437 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2438 UNLOCK_FDPID_MUTEX;
a0d0e21e 2439 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2440 SvIVX(sv) = pid;
3280af22 2441 PL_forkprocess = pid;
e446cec8
IZ		 2442 if (did_pipes && pid > 0) {
2443 int errkid;
2444 int n = 0, n1;
2445
2446 while (n < sizeof(int)) {
2447 n1 = PerlLIO_read(pp[0],
2448 (void*)(((char*)&errkid)+n),
2449 (sizeof(int)) - n);
2450 if (n1 <= 0)
2451 break;
2452 n += n1;
2453 }
2f96c702
IZ		 2454 PerlLIO_close(pp[0]);
2455 did_pipes = 0;
e446cec8
IZ		 2456 if (n) { /* Error */
2457 if (n != sizeof(int))
cea2e8a9 2458 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2459 errno = errkid; /* Propagate errno from kid */
2460 return Nullfp;
2461 }
2462 }
2463 if (did_pipes)
2464 PerlLIO_close(pp[0]);
8ac85365 2465 return PerlIO_fdopen(p[This], mode);
a687059c 2466}
7c0587c8 2467#else
55497cff 2468#if defined(atarist) || defined(DJGPP)
7c0587c8 2469FILE *popen();
760ac839 2470PerlIO *
864dbfa3 2471Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2472{
760ac839 2473 /* Needs work for PerlIO ! */
55497cff 2474 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2475 PERL_FLUSHALL_FOR_CHILD;
55497cff 2476 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2477}
2478#endif
2479
2480#endif /* !DOSISH */
a687059c 2481
748a9306 2482#ifdef DUMP_FDS
35ff7856 2483void
864dbfa3 2484Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2485{
2486 int fd;
2487 struct stat tmpstatbuf;
2488
bf49b057 2489 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2490 for (fd = 0; fd < 32; fd++) {
6ad3d225 2491 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2492 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2493 }
bf49b057 2494 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2495}
35ff7856 2496#endif /* DUMP_FDS */
ae986130 2497
fe14fcc3 2498#ifndef HAS_DUP2
fec02dd3 2499int
ba106d47 2500dup2(int oldfd, int newfd)
a687059c 2501{
a0d0e21e 2502#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2503 if (oldfd == newfd)
2504 return oldfd;
6ad3d225 2505 PerlLIO_close(newfd);
fec02dd3 2506 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2507#else
fc36a67e 2508#define DUP2_MAX_FDS 256
2509 int fdtmp[DUP2_MAX_FDS];
79072805 2510 I32 fdx = 0;
ae986130
LW		 2511 int fd;
2512
fe14fcc3 2513 if (oldfd == newfd)
fec02dd3 2514 return oldfd;
6ad3d225 2515 PerlLIO_close(newfd);
fc36a67e 2516 /* good enough for low fd's... */
6ad3d225 2517 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2518 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2519 PerlLIO_close(fd);
fc36a67e 2520 fd = -1;
2521 break;
2522 }
ae986130 2523 fdtmp[fdx++] = fd;
fc36a67e 2524 }
ae986130 2525 while (fdx > 0)
6ad3d225 2526 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2527 return fd;
62b28dd9 2528#endif
a687059c
LW		 2529}
2530#endif
2531
64ca3a65 2532#ifndef PERL_MICRO
ff68c719 2533#ifdef HAS_SIGACTION
2534
2535Sighandler_t
864dbfa3 2536Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2537{
2538 struct sigaction act, oact;
2539
2540 act.sa_handler = handler;
2541 sigemptyset(&act.sa_mask);
2542 act.sa_flags = 0;
2543#ifdef SA_RESTART
2544 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2545#endif
85264bed
CS		 2546#ifdef SA_NOCLDWAIT
2547 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2548 act.sa_flags |= SA_NOCLDWAIT;
2549#endif
ff68c719 2550 if (sigaction(signo, &act, &oact) == -1)
36477c24 2551 return SIG_ERR;
ff68c719 2552 else
36477c24 2553 return oact.sa_handler;
ff68c719 2554}
2555
2556Sighandler_t
864dbfa3 2557Perl_rsignal_state(pTHX_ int signo)
ff68c719 2558{
2559 struct sigaction oact;
2560
2561 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2562 return SIG_ERR;
2563 else
2564 return oact.sa_handler;
2565}
2566
2567int
864dbfa3 2568Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2569{
2570 struct sigaction act;
2571
2572 act.sa_handler = handler;
2573 sigemptyset(&act.sa_mask);
2574 act.sa_flags = 0;
2575#ifdef SA_RESTART
2576 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2577#endif
85264bed
CS		 2578#ifdef SA_NOCLDWAIT
2579 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2580 act.sa_flags |= SA_NOCLDWAIT;
2581#endif
ff68c719 2582 return sigaction(signo, &act, save);
2583}
2584
2585int
864dbfa3 2586Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2587{
2588 return sigaction(signo, save, (struct sigaction *)NULL);
2589}
2590
2591#else /* !HAS_SIGACTION */
2592
2593Sighandler_t
864dbfa3 2594Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2595{
6ad3d225 2596 return PerlProc_signal(signo, handler);
ff68c719 2597}
2598
2599static int sig_trapped;
2600
2601static
2602Signal_t
4e35701f 2603sig_trap(int signo)
ff68c719 2604{
2605 sig_trapped++;
2606}
2607
2608Sighandler_t
864dbfa3 2609Perl_rsignal_state(pTHX_ int signo)
ff68c719 2610{
2611 Sighandler_t oldsig;
2612
2613 sig_trapped = 0;
6ad3d225
GS		 2614 oldsig = PerlProc_signal(signo, sig_trap);
2615 PerlProc_signal(signo, oldsig);
ff68c719 2616 if (sig_trapped)
7766f137 2617 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2618 return oldsig;
2619}
2620
2621int
864dbfa3 2622Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2623{
6ad3d225 2624 *save = PerlProc_signal(signo, handler);
ff68c719 2625 return (*save == SIG_ERR) ? -1 : 0;
2626}
2627
2628int
864dbfa3 2629Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2630{
6ad3d225 2631 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2632}
2633
2634#endif /* !HAS_SIGACTION */
64ca3a65 2635#endif /* !PERL_MICRO */
ff68c719 2636
5f05dabc 2637 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2638#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2639I32
864dbfa3 2640Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2641{
ff68c719 2642 Sigsave_t hstat, istat, qstat;
a687059c 2643 int status;
a0d0e21e 2644 SV **svp;
d8a83dd3
JH		 2645 Pid_t pid;
2646 Pid_t pid2;
03136e13
CS		 2647 bool close_failed;
2648 int saved_errno;
2649#ifdef VMS
2650 int saved_vaxc_errno;
2651#endif
22fae026
TM		 2652#ifdef WIN32
2653 int saved_win32_errno;
2654#endif
a687059c 2655
4755096e 2656 LOCK_FDPID_MUTEX;
3280af22 2657 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2658 UNLOCK_FDPID_MUTEX;
d8a83dd3 2659 pid = SvIVX(*svp);
a0d0e21e 2660 SvREFCNT_dec(*svp);
3280af22 2661 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2662#ifdef OS2
2663 if (pid == -1) { /* Opened by popen. */
2664 return my_syspclose(ptr);
2665 }
2666#endif
03136e13
CS		 2667 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2668 saved_errno = errno;
2669#ifdef VMS
2670 saved_vaxc_errno = vaxc$errno;
2671#endif
22fae026
TM		 2672#ifdef WIN32
2673 saved_win32_errno = GetLastError();
2674#endif
03136e13 2675 }
7c0587c8 2676#ifdef UTS
6ad3d225 2677 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2678#endif
64ca3a65 2679#ifndef PERL_MICRO
ff68c719 2680 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2681 rsignal_save(SIGINT, SIG_IGN, &istat);
2682 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2683#endif
748a9306 2684 do {
1d3434b8
GS		 2685 pid2 = wait4pid(pid, &status, 0);
2686 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2687#ifndef PERL_MICRO
ff68c719 2688 rsignal_restore(SIGHUP, &hstat);
2689 rsignal_restore(SIGINT, &istat);
2690 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2691#endif
03136e13
CS		 2692 if (close_failed) {
2693 SETERRNO(saved_errno, saved_vaxc_errno);
2694 return -1;
2695 }
1d3434b8 2696 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2697}
4633a7c4
LW		 2698#endif /* !DOSISH */
2699
cd39f2b6 2700#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2701I32
d8a83dd3 2702Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2703{
79072805
LW		 2704 SV *sv;
2705 SV** svp;
fc36a67e 2706 char spid[TYPE_CHARS(int)];
20188a90
LW		 2707
2708 if (!pid)
2709 return -1;
68a29c53 2710#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2711 if (pid > 0) {
7b0972df 2712 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2713 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2714 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2715 *statusp = SvIVX(*svp);
3280af22 2716 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2717 return pid;
2718 }
2719 }
2720 else {
79072805 2721 HE *entry;
20188a90 2722
3280af22 2723 hv_iterinit(PL_pidstatus);
155aba94 2724 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2725 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2726 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2727 *statusp = SvIVX(sv);
7b0972df 2728 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2729 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2730 return pid;
2731 }
2732 }
68a29c53 2733#endif
79072805 2734#ifdef HAS_WAITPID
367f3c24
IZ		 2735# ifdef HAS_WAITPID_RUNTIME
2736 if (!HAS_WAITPID_RUNTIME)
2737 goto hard_way;
2738# endif
f55ee38a 2739 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2740#endif
2741#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2742 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2743#endif
2744#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2745 hard_way:
a0d0e21e
LW		 2746 {
2747 I32 result;
2748 if (flags)
cea2e8a9 2749 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2750 else {
76e3520e 2751 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2752 pidgone(result,*statusp);
2753 if (result < 0)
2754 *statusp = -1;
2755 }
2756 return result;
a687059c
LW		 2757 }
2758#endif
a687059c 2759}
2d7a9237 2760#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2761
7c0587c8 2762void
de3bb511 2763/*SUPPRESS 590*/
d8a83dd3 2764Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2765{
79072805 2766 register SV *sv;
fc36a67e 2767 char spid[TYPE_CHARS(int)];
a687059c 2768
7b0972df 2769 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2770 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2771 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2772 SvIVX(sv) = status;
20188a90 2773 return;
a687059c
LW		 2774}
2775
55497cff 2776#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2777int pclose();
ddcf38b7
IZ		 2778#ifdef HAS_FORK
2779int /* Cannot prototype with I32
2780 in os2ish.h. */
ba106d47 2781my_syspclose(PerlIO *ptr)
ddcf38b7 2782#else
79072805 2783I32
864dbfa3 2784Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2785#endif
a687059c 2786{
760ac839
LW		 2787 /* Needs work for PerlIO ! */
2788 FILE *f = PerlIO_findFILE(ptr);
2789 I32 result = pclose(f);
933fea7f
GS		 2790#if defined(DJGPP)
2791 result = (result << 8) & 0xff00;
2792#endif
760ac839
LW		 2793 PerlIO_releaseFILE(ptr,f);
2794 return result;
a687059c 2795}
7c0587c8 2796#endif
9f68db38
LW		 2797
2798void
864dbfa3 2799Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2800{
79072805 2801 register I32 todo;
08105a92 2802 register const char *frombase = from;
9f68db38
LW		 2803
2804 if (len == 1) {
08105a92 2805 register const char c = *from;
9f68db38 2806 while (count-- > 0)
5926133d 2807 *to++ = c;
9f68db38
LW		 2808 return;
2809 }
2810 while (count-- > 0) {
2811 for (todo = len; todo > 0; todo--) {
2812 *to++ = *from++;
2813 }
2814 from = frombase;
2815 }
2816}
0f85fab0 2817
463ee0b2 2818U32
65202027 2819Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2820{
2821 long along;
2822
27e2fb84 2823#if CASTFLAGS & 2
34de22dd
LW		 2824# define BIGDOUBLE 2147483648.0
2825 if (f >= BIGDOUBLE)
2826 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2827#endif
0f85fab0
LW		 2828 if (f >= 0.0)
2829 return (unsigned long)f;
2830 along = (long)f;
2831 return (unsigned long)along;
2832}
ed6116ce 2833# undef BIGDOUBLE
5d94fbed 2834
5d94fbed
AD		 2835/* Unfortunately, on some systems the cast_uv() function doesn't
2836 work with the system-supplied definition of ULONG_MAX. The
2837 comparison (f >= ULONG_MAX) always comes out true. It must be a
2838 problem with the compiler constant folding.
2839
2840 In any case, this workaround should be fine on any two's complement
2841 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2842 ccflags.
2843 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2844*/
1eb770ff 2845
2846/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2847 of LONG_(MIN/MAX).
2848 -- Kenneth Albanowski <kjahds@kjahds.com>
2849*/
2850
20cec16a 2851#ifndef MY_UV_MAX
2852# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2853#endif
2854
ed6116ce 2855I32
65202027 2856Perl_cast_i32(pTHX_ NV f)
ed6116ce 2857{
20cec16a 2858 if (f >= I32_MAX)
2859 return (I32) I32_MAX;
2860 if (f <= I32_MIN)
2861 return (I32) I32_MIN;
ed6116ce
LW		 2862 return (I32) f;
2863}
a0d0e21e
LW		 2864
2865IV
65202027 2866Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2867{
25da4f38
IZ		 2868 if (f >= IV_MAX) {
2869 UV uv;
2870
65202027 2871 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2872 return (IV) UV_MAX;
2873 uv = (UV) f;
2874 return (IV)uv;
2875 }
20cec16a 2876 if (f <= IV_MIN)
2877 return (IV) IV_MIN;
a0d0e21e
LW		 2878 return (IV) f;
2879}
5d94fbed
AD		 2880
2881UV
65202027 2882Perl_cast_uv(pTHX_ NV f)
5d94fbed 2883{
20cec16a 2884 if (f >= MY_UV_MAX)
2885 return (UV) MY_UV_MAX;
25da4f38
IZ		 2886 if (f < 0) {
2887 IV iv;
2888
2889 if (f < IV_MIN)
2890 return (UV)IV_MIN;
2891 iv = (IV) f;
2892 return (UV) iv;
2893 }
5d94fbed
AD		 2894 return (UV) f;
2895}
2896
fe14fcc3 2897#ifndef HAS_RENAME
79072805 2898I32
864dbfa3 2899Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2900{
93a17b20
LW		 2901 char *fa = strrchr(a,'/');
2902 char *fb = strrchr(b,'/');
62b28dd9
LW		 2903 struct stat tmpstatbuf1;
2904 struct stat tmpstatbuf2;
46fc3d4c 2905 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2906
2907 if (fa)
2908 fa++;
2909 else
2910 fa = a;
2911 if (fb)
2912 fb++;
2913 else
2914 fb = b;
2915 if (strNE(a,b))
2916 return FALSE;
2917 if (fa == a)
46fc3d4c 2918 sv_setpv(tmpsv, ".");
62b28dd9 2919 else
46fc3d4c 2920 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2921 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2922 return FALSE;
2923 if (fb == b)
46fc3d4c 2924 sv_setpv(tmpsv, ".");
62b28dd9 2925 else
46fc3d4c 2926 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2927 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2928 return FALSE;
2929 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2930 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2931}
fe14fcc3
LW		 2932#endif /* !HAS_RENAME */
2933
9e24b6e2 2934NV
864dbfa3 2935Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2936{
2937 register char *s = start;
9e24b6e2
JH		 2938 register NV rnv = 0.0;
2939 register UV ruv = 0;
252aa082 2940 register bool seenb = FALSE;
9e24b6e2 2941 register bool overflowed = FALSE;
252aa082
JH		 2942
2943 for (; len-- && *s; s++) {
2944 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2945 if (*s == '_' && len && *retlen
2946 && (s[1] == '0' || s[1] == '1'))
2947 {
2948 --len;
2949 ++s;
2950 }
2951 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2952 /* Disallow 0bbb0b0bbb... */
2953 seenb = TRUE;
252aa082
JH		 2954 continue;
2955 }
2956 else {
2957 dTHR;
627300f0
JH		 2958 if (ckWARN(WARN_DIGIT))
2959 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2960 "Illegal binary digit '%c' ignored", *s);
2961 break;
2962 }
9e24b6e2
JH		 2963 }
2964 if (!overflowed) {
2965 register UV xuv = ruv << 1;
2966
2967 if ((xuv >> 1) != ruv) {
2968 dTHR;
2969 overflowed = TRUE;
2970 rnv = (NV) ruv;
627300f0
JH		 2971 if (ckWARN_d(WARN_OVERFLOW))
2972 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2973 "Integer overflow in binary number");
b21ed0a9
GS		 2974 }
2975 else
9e24b6e2
JH		 2976 ruv = xuv | (*s - '0');
2977 }
2978 if (overflowed) {
2979 rnv *= 2;
2980 /* If an NV has not enough bits in its mantissa to
2981 * represent an UV this summing of small low-order numbers
2982 * is a waste of time (because the NV cannot preserve
2983 * the low-order bits anyway): we could just remember when
2984 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2985 * right amount. */
9e24b6e2 2986 rnv += (*s - '0');
f248d071 2987 }
4f19785b 2988 }
9e24b6e2
JH		 2989 if (!overflowed)
2990 rnv = (NV) ruv;
893fe2c2 2991 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2992#if UVSIZE > 4
893fe2c2
JH		 2993 || (!overflowed && ruv > 0xffffffff )
2994#endif
2995 ) {
252aa082 2996 dTHR;
627300f0
JH		 2997 if (ckWARN(WARN_PORTABLE))
2998 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2999 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 3000 }
3001 *retlen = s - start;
9e24b6e2 3002 return rnv;
4f19785b 3003}
9e24b6e2
JH		 3004
3005NV
864dbfa3 3006Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3007{
3008 register char *s = start;
9e24b6e2
JH		 3009 register NV rnv = 0.0;
3010 register UV ruv = 0;
3011 register bool overflowed = FALSE;
252aa082
JH		 3012
3013 for (; len-- && *s; s++) {
3014 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 3015 if (*s == '_' && len && *retlen
3016 && (s[1] >= '0' && s[1] <= '7'))
3017 {
3018 --len;
3019 ++s;
3020 }
252aa082 3021 else {
f84f607d
JH		 3022 /* Allow \octal to work the DWIM way (that is, stop scanning
3023 * as soon as non-octal characters are seen, complain only iff
3024 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 3025 if (*s == '8' || *s == '9') {
3026 dTHR;
627300f0
JH		 3027 if (ckWARN(WARN_DIGIT))
3028 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 3029 "Illegal octal digit '%c' ignored", *s);
3030 }
3031 break;
3032 }
55497cff 3033 }
9e24b6e2 3034 if (!overflowed) {
893fe2c2 3035 register UV xuv = ruv << 3;
9e24b6e2
JH		 3036
3037 if ((xuv >> 3) != ruv) {
3038 dTHR;
3039 overflowed = TRUE;
3040 rnv = (NV) ruv;
627300f0
JH		 3041 if (ckWARN_d(WARN_OVERFLOW))
3042 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3043 "Integer overflow in octal number");
b21ed0a9
GS		 3044 }
3045 else
9e24b6e2
JH		 3046 ruv = xuv | (*s - '0');
3047 }
3048 if (overflowed) {
3049 rnv *= 8.0;
3050 /* If an NV has not enough bits in its mantissa to
3051 * represent an UV this summing of small low-order numbers
3052 * is a waste of time (because the NV cannot preserve
3053 * the low-order bits anyway): we could just remember when
3054 * did we overflow and in the end just multiply rnv by the
3055 * right amount of 8-tuples. */
3056 rnv += (NV)(*s - '0');
3057 }
fe14fcc3 3058 }
9e24b6e2
JH		 3059 if (!overflowed)
3060 rnv = (NV) ruv;
893fe2c2 3061 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3062#if UVSIZE > 4
893fe2c2
JH		 3063 || (!overflowed && ruv > 0xffffffff )
3064#endif
3065 ) {
d008e5eb 3066 dTHR;
627300f0
JH		 3067 if (ckWARN(WARN_PORTABLE))
3068 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3069 "Octal number > 037777777777 non-portable");
d008e5eb 3070 }
fe14fcc3 3071 *retlen = s - start;
9e24b6e2 3072 return rnv;
fe14fcc3
LW		 3073}
3074
9e24b6e2 3075NV
864dbfa3 3076Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3077{
3078 register char *s = start;
9e24b6e2
JH		 3079 register NV rnv = 0.0;
3080 register UV ruv = 0;
252aa082 3081 register bool seenx = FALSE;
9e24b6e2 3082 register bool overflowed = FALSE;
9e24b6e2 3083 char *hexdigit;
fe14fcc3 3084
9e24b6e2
JH		 3085 for (; len-- && *s; s++) {
3086 hexdigit = strchr((char *) PL_hexdigit, *s);
3087 if (!hexdigit) {
b21ed0a9
GS		 3088 if (*s == '_' && len && *retlen && s[1]
3089 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3090 {
3091 --len;
3092 ++s;
3093 }
3094 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3095 /* Disallow 0xxx0x0xxx... */
3096 seenx = TRUE;
252aa082
JH		 3097 continue;
3098 }
a0ed51b3 3099 else {
d008e5eb 3100 dTHR;
627300f0
JH		 3101 if (ckWARN(WARN_DIGIT))
3102 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3103 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3104 break;
3105 }
3106 }
9e24b6e2
JH		 3107 if (!overflowed) {
3108 register UV xuv = ruv << 4;
3109
3110 if ((xuv >> 4) != ruv) {
3111 dTHR;
3112 overflowed = TRUE;
3113 rnv = (NV) ruv;
627300f0
JH		 3114 if (ckWARN_d(WARN_OVERFLOW))
3115 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3116 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3117 }
3118 else
9e24b6e2
JH		 3119 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3120 }
3121 if (overflowed) {
3122 rnv *= 16.0;
3123 /* If an NV has not enough bits in its mantissa to
3124 * represent an UV this summing of small low-order numbers
3125 * is a waste of time (because the NV cannot preserve
3126 * the low-order bits anyway): we could just remember when
3127 * did we overflow and in the end just multiply rnv by the
3128 * right amount of 16-tuples. */
3129 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3130 }
6ff81951 3131 }
9e24b6e2
JH		 3132 if (!overflowed)
3133 rnv = (NV) ruv;
893fe2c2 3134 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3135#if UVSIZE > 4
893fe2c2
JH		 3136 || (!overflowed && ruv > 0xffffffff )
3137#endif
3138 ) {
252aa082 3139 dTHR;
627300f0
JH		 3140 if (ckWARN(WARN_PORTABLE))
3141 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3142 "Hexadecimal number > 0xffffffff non-portable");
3143 }
fe14fcc3 3144 *retlen = s - start;
9e24b6e2 3145 return rnv;
fe14fcc3 3146}
760ac839 3147
491527d0 3148char*
864dbfa3 3149Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3150{
3151 dTHR;
3152 char *xfound = Nullch;
3153 char *xfailed = Nullch;
0f31cffe 3154 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3155 register char *s;
3156 I32 len;
3157 int retval;
3158#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3159# define SEARCH_EXTS ".bat", ".cmd", NULL
3160# define MAX_EXT_LEN 4
3161#endif
3162#ifdef OS2
3163# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3164# define MAX_EXT_LEN 4
3165#endif
3166#ifdef VMS
3167# define SEARCH_EXTS ".pl", ".com", NULL
3168# define MAX_EXT_LEN 4
3169#endif
3170 /* additional extensions to try in each dir if scriptname not found */
3171#ifdef SEARCH_EXTS
3172 char *exts[] = { SEARCH_EXTS };
3173 char **ext = search_ext ? search_ext : exts;
3174 int extidx = 0, i = 0;
3175 char *curext = Nullch;
3176#else
3177# define MAX_EXT_LEN 0
3178#endif
3179
3180 /*
3181 * If dosearch is true and if scriptname does not contain path
3182 * delimiters, search the PATH for scriptname.
3183 *
3184 * If SEARCH_EXTS is also defined, will look for each
3185 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3186 * while searching the PATH.
3187 *
3188 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3189 * proceeds as follows:
3190 * If DOSISH or VMSISH:
3191 * + look for ./scriptname{,.foo,.bar}
3192 * + search the PATH for scriptname{,.foo,.bar}
3193 *
3194 * If !DOSISH:
3195 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3196 * this will not look in '.' if it's not in the PATH)
3197 */
84486fc6 3198 tmpbuf[0] = '\0';
491527d0
GS		 3199
3200#ifdef VMS
3201# ifdef ALWAYS_DEFTYPES
3202 len = strlen(scriptname);
3203 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3204 int hasdir, idx = 0, deftypes = 1;
3205 bool seen_dot = 1;
3206
3207 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3208# else
3209 if (dosearch) {
3210 int hasdir, idx = 0, deftypes = 1;
3211 bool seen_dot = 1;
3212
3213 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3214# endif
3215 /* The first time through, just add SEARCH_EXTS to whatever we
3216 * already have, so we can check for default file types. */
3217 while (deftypes ||
84486fc6 3218 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3219 {
3220 if (deftypes) {
3221 deftypes = 0;
84486fc6 3222 *tmpbuf = '\0';
491527d0 3223 }
84486fc6
GS		 3224 if ((strlen(tmpbuf) + strlen(scriptname)
3225 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3226 continue; /* don't search dir with too-long name */
84486fc6 3227 strcat(tmpbuf, scriptname);
491527d0
GS		 3228#else /* !VMS */
3229
3230#ifdef DOSISH
3231 if (strEQ(scriptname, "-"))
3232 dosearch = 0;
3233 if (dosearch) { /* Look in '.' first. */
3234 char *cur = scriptname;
3235#ifdef SEARCH_EXTS
3236 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3237 while (ext[i])
3238 if (strEQ(ext[i++],curext)) {
3239 extidx = -1; /* already has an ext */
3240 break;
3241 }
3242 do {
3243#endif
3244 DEBUG_p(PerlIO_printf(Perl_debug_log,
3245 "Looking for %s\n",cur));
017f25f1
IZ		 3246 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3247 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3248 dosearch = 0;
3249 scriptname = cur;
3250#ifdef SEARCH_EXTS
3251 break;
3252#endif
3253 }
3254#ifdef SEARCH_EXTS
3255 if (cur == scriptname) {
3256 len = strlen(scriptname);
84486fc6 3257 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3258 break;
84486fc6 3259 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3260 }
3261 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3262 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3263#endif
3264 }
3265#endif
3266
cd39f2b6
JH		 3267#ifdef MACOS_TRADITIONAL
3268 if (dosearch && !strchr(scriptname, ':') &&
3269 (s = PerlEnv_getenv("Commands")))
3270#else
491527d0
GS		 3271 if (dosearch && !strchr(scriptname, '/')
3272#ifdef DOSISH
3273 && !strchr(scriptname, '\\')
3274#endif
cd39f2b6
JH		 3275 && (s = PerlEnv_getenv("PATH")))
3276#endif
3277 {
491527d0
GS		 3278 bool seen_dot = 0;
3279
3280af22
NIS		 3280 PL_bufend = s + strlen(s);
3281 while (s < PL_bufend) {
cd39f2b6
JH		 3282#ifdef MACOS_TRADITIONAL
3283 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3284 ',',
3285 &len);
3286#else
491527d0
GS		 3287#if defined(atarist) || defined(DOSISH)
3288 for (len = 0; *s
3289# ifdef atarist
3290 && *s != ','
3291# endif
3292 && *s != ';'; len++, s++) {
84486fc6
GS		 3293 if (len < sizeof tmpbuf)
3294 tmpbuf[len] = *s;
491527d0 3295 }
84486fc6
GS		 3296 if (len < sizeof tmpbuf)
3297 tmpbuf[len] = '\0';
491527d0 3298#else /* ! (atarist || DOSISH) */
3280af22 3299 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3300 ':',
3301 &len);
3302#endif /* ! (atarist || DOSISH) */
cd39f2b6 3303#endif /* MACOS_TRADITIONAL */
3280af22 3304 if (s < PL_bufend)
491527d0 3305 s++;
84486fc6 3306 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3307 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3308#ifdef MACOS_TRADITIONAL
3309 if (len && tmpbuf[len - 1] != ':')
3310 tmpbuf[len++] = ':';
3311#else
491527d0 3312 if (len
61ae2fbf 3313#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3314 && tmpbuf[len - 1] != '/'
3315 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3316#endif
3317 )
84486fc6
GS		 3318 tmpbuf[len++] = '/';
3319 if (len == 2 && tmpbuf[0] == '.')
491527d0 3320 seen_dot = 1;
cd39f2b6 3321#endif
84486fc6 3322 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3323#endif /* !VMS */
3324
3325#ifdef SEARCH_EXTS
84486fc6 3326 len = strlen(tmpbuf);
491527d0
GS		 3327 if (extidx > 0) /* reset after previous loop */
3328 extidx = 0;
3329 do {
3330#endif
84486fc6 3331 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3332 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3333 if (S_ISDIR(PL_statbuf.st_mode)) {
3334 retval = -1;
3335 }
491527d0
GS		 3336#ifdef SEARCH_EXTS
3337 } while ( retval < 0 /* not there */
3338 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3339 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3340 );
3341#endif
3342 if (retval < 0)
3343 continue;
3280af22
NIS		 3344 if (S_ISREG(PL_statbuf.st_mode)
3345 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3346#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3347 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3348#endif
3349 )
3350 {
84486fc6 3351 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3352 break;
3353 }
3354 if (!xfailed)
84486fc6 3355 xfailed = savepv(tmpbuf);
491527d0
GS		 3356 }
3357#ifndef DOSISH
017f25f1
IZ		 3358 if (!xfound && !seen_dot && !xfailed &&
3359 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3360 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3361#endif
3362 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3363 if (!xfound) {
3364 if (flags & 1) { /* do or die? */
cea2e8a9 3365 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3366 (xfailed ? "execute" : "find"),
3367 (xfailed ? xfailed : scriptname),
3368 (xfailed ? "" : " on PATH"),
3369 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3370 }
3371 scriptname = Nullch;
3372 }
491527d0
GS		 3373 if (xfailed)
3374 Safefree(xfailed);
3375 scriptname = xfound;
3376 }
9ccb31f9 3377 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3378}
3379
ba869deb
GS		 3380#ifndef PERL_GET_CONTEXT_DEFINED
3381
3382void *
3383Perl_get_context(void)
3384{
3385#if defined(USE_THREADS) || defined(USE_ITHREADS)
3386# ifdef OLD_PTHREADS_API
3387 pthread_addr_t t;
3388 if (pthread_getspecific(PL_thr_key, &t))
3389 Perl_croak_nocontext("panic: pthread_getspecific");
3390 return (void*)t;
3391# else
c44d3fdb
GS		 3392# ifdef I_MACH_CTHREADS
3393 return (void*)cthread_data(cthread_self());
3394# else
ba869deb
GS		 3395 return (void*)pthread_getspecific(PL_thr_key);
3396# endif
c44d3fdb 3397# endif
ba869deb
GS		 3398#else
3399 return (void*)NULL;
3400#endif
3401}
3402
3403void
3404Perl_set_context(void *t)
3405{
3406#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3407# ifdef I_MACH_CTHREADS
3408 cthread_set_data(cthread_self(), t);
3409# else
ba869deb
GS		 3410 if (pthread_setspecific(PL_thr_key, t))
3411 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3412# endif
ba869deb
GS		 3413#endif
3414}
3415
3416#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3417
11343788 3418#ifdef USE_THREADS
ba869deb 3419
12ca11f6
MB		 3420#ifdef FAKE_THREADS
3421/* Very simplistic scheduler for now */
3422void
3423schedule(void)
3424{
c7848ba1 3425 thr = thr->i.next_run;
12ca11f6
MB		 3426}
3427
3428void
864dbfa3 3429Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3430{
3431 *cp = 0;
3432}
3433
3434void
864dbfa3 3435Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3436{
51dd5992 3437 perl_os_thread t;
12ca11f6
MB		 3438 perl_cond cond = *cp;
3439
3440 if (!cond)
3441 return;
3442 t = cond->thread;
3443 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3444 t->i.next_run = thr->i.next_run;
3445 thr->i.next_run->i.prev_run = t;
3446 t->i.prev_run = thr;
3447 thr->i.next_run = t;
3448 thr->i.wait_queue = 0;
12ca11f6
MB		 3449 /* Remove from the wait queue */
3450 *cp = cond->next;
3451 Safefree(cond);
3452}
3453
3454void
864dbfa3 3455Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3456{
51dd5992 3457 perl_os_thread t;
12ca11f6
MB		 3458 perl_cond cond, cond_next;
3459
3460 for (cond = *cp; cond; cond = cond_next) {
3461 t = cond->thread;
3462 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3463 t->i.next_run = thr->i.next_run;
3464 thr->i.next_run->i.prev_run = t;
3465 t->i.prev_run = thr;
3466 thr->i.next_run = t;
3467 thr->i.wait_queue = 0;
12ca11f6
MB		 3468 /* Remove from the wait queue */
3469 cond_next = cond->next;
3470 Safefree(cond);
3471 }
3472 *cp = 0;
3473}
3474
3475void
864dbfa3 3476Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3477{
3478 perl_cond cond;
3479
c7848ba1 3480 if (thr->i.next_run == thr)
cea2e8a9 3481 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3482
0f15f207 3483 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3484 cond->thread = thr;
3485 cond->next = *cp;
3486 *cp = cond;
c7848ba1 3487 thr->i.wait_queue = cond;
12ca11f6 3488 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3489 thr->i.next_run->i.prev_run = thr->i.prev_run;
3490 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3491}
3492#endif /* FAKE_THREADS */
3493
f93b4edd 3494MAGIC *
864dbfa3 3495Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3496{
3497 MAGIC *mg;
3498
3499 SvUPGRADE(sv, SVt_PVMG);
3500 mg = mg_find(sv, 'm');
3501 if (!mg) {
3502 condpair_t *cp;
3503
3504 New(53, cp, 1, condpair_t);
3505 MUTEX_INIT(&cp->mutex);
3506 COND_INIT(&cp->owner_cond);
3507 COND_INIT(&cp->cond);
3508 cp->owner = 0;
1feb2720 3509 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3510 mg = mg_find(sv, 'm');
3511 if (mg) {
3512 /* someone else beat us to initialising it */
1feb2720 3513 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3514 MUTEX_DESTROY(&cp->mutex);
3515 COND_DESTROY(&cp->owner_cond);
3516 COND_DESTROY(&cp->cond);
3517 Safefree(cp);
3518 }
3519 else {
3520 sv_magic(sv, Nullsv, 'm', 0, 0);
3521 mg = SvMAGIC(sv);
3522 mg->mg_ptr = (char *)cp;
565764a8 3523 mg->mg_len = sizeof(cp);
1feb2720 3524 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3525 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3526 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3527 }
3528 }
3529 return mg;
3530}
a863c7d1 3531
3d35f11b 3532SV *
4755096e 3533Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS		 3534{
3535 MAGIC *mg;
3536 SV *sv = osv;
3537
631cfb58 3538 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS		 3539 if (SvROK(sv)) {
3540 sv = SvRV(sv);
3d35f11b
GS		 3541 }
3542
3543 mg = condpair_magic(sv);
3544 MUTEX_LOCK(MgMUTEXP(mg));
3545 if (MgOWNER(mg) == thr)
3546 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3547 else {
3d35f11b
GS		 3548 while (MgOWNER(mg))
3549 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3550 MgOWNER(mg) = thr;
4755096e
GS		 3551 DEBUG_S(PerlIO_printf(Perl_debug_log,
3552 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS		 3553 PTR2UV(thr), PTR2UV(sv));)
3554 MUTEX_UNLOCK(MgMUTEXP(mg));
3555 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3556 }
631cfb58 3557 UNLOCK_SV_LOCK_MUTEX;
4755096e 3558 return sv;
3d35f11b
GS		 3559}
3560
a863c7d1 3561/*
199100c8
MB		 3562 * Make a new perl thread structure using t as a prototype. Some of the
3563 * fields for the new thread are copied from the prototype thread, t,
3564 * so t should not be running in perl at the time this function is
3565 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3566 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3567 */
52e1cb5e 3568struct perl_thread *
864dbfa3 3569Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3570{
c5be433b 3571#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3572 struct perl_thread *thr;
cea2e8a9 3573#endif
a863c7d1 3574 SV *sv;
199100c8
MB		 3575 SV **svp;
3576 I32 i;
3577
79cb57f6 3578 sv = newSVpvn("", 0);
52e1cb5e
JH		 3579 SvGROW(sv, sizeof(struct perl_thread) + 1);
3580 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3581 thr = (Thread) SvPVX(sv);
949ced2d 3582#ifdef DEBUGGING
52e1cb5e 3583 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3584 PL_markstack = 0;
3585 PL_scopestack = 0;
3586 PL_savestack = 0;
3587 PL_retstack = 0;
3588 PL_dirty = 0;
3589 PL_localizing = 0;
949ced2d
GS		 3590 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3591#else
3592 Zero(thr, 1, struct perl_thread);
3593#endif
199100c8
MB		 3594
3595 thr->oursv = sv;
cea2e8a9 3596 init_stacks();
a863c7d1 3597
533c011a 3598 PL_curcop = &PL_compiling;
c5be433b 3599 thr->interp = t->interp;
199100c8 3600 thr->cvcache = newHV();
54b9620d 3601 thr->threadsv = newAV();
a863c7d1 3602 thr->specific = newAV();
79cb57f6 3603 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3604 thr->flags = THRf_R_JOINABLE;
3605 MUTEX_INIT(&thr->mutex);
199100c8 3606
5c831c24 3607 JMPENV_BOOTSTRAP;
533c011a 3608
6dc8a9e4 3609 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
533c011a
NIS		 3610 PL_restartop = 0;
3611
b099ddc0 3612 PL_statname = NEWSV(66,0);
5a844595 3613 PL_errors = newSVpvn("", 0);
b099ddc0 3614 PL_maxscream = -1;
0b94c7bb
GS		 3615 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3616 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3617 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3618 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3619 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3620 PL_regindent = 0;
3621 PL_reginterp_cnt = 0;
3622 PL_lastscream = Nullsv;
3623 PL_screamfirst = 0;
3624 PL_screamnext = 0;
3625 PL_reg_start_tmp = 0;
3626 PL_reg_start_tmpl = 0;
14ed4b74 3627 PL_reg_poscache = Nullch;
b099ddc0
GS		 3628
3629 /* parent thread's data needs to be locked while we make copy */
3630 MUTEX_LOCK(&t->mutex);
3631
14dd3ad8 3632#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3633 PL_protect = t->Tprotect;
14dd3ad8 3634#endif
312caa8e 3635
b099ddc0
GS		 3636 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3637 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3638 PL_curstash = t->Tcurstash; /* always be set to main? */
3639
6b88bc9c 3640 PL_tainted = t->Ttainted;
84fee439
NIS		 3641 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3642 PL_nrs = newSVsv(t->Tnrs);
3643 PL_rs = SvREFCNT_inc(PL_nrs);
3644 PL_last_in_gv = Nullgv;
3645 PL_ofslen = t->Tofslen;
3646 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3647 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3648 PL_chopset = t->Tchopset;
84fee439
NIS		 3649 PL_bodytarget = newSVsv(t->Tbodytarget);
3650 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3651 if (t->Tformtarget == t->Ttoptarget)
3652 PL_formtarget = PL_toptarget;
3653 else
3654 PL_formtarget = PL_bodytarget;
533c011a 3655
54b9620d
MB		 3656 /* Initialise all per-thread SVs that the template thread used */
3657 svp = AvARRAY(t->threadsv);
93965878 3658 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3659 if (*svp && *svp != &PL_sv_undef) {
199100c8 3660 SV *sv = newSVsv(*svp);
54b9620d 3661 av_store(thr->threadsv, i, sv);
533c011a 3662 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3663 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3664 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3665 (IV)i, t, thr));
199100c8
MB		 3666 }
3667 }
940cb80d 3668 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3669
533c011a
NIS		 3670 MUTEX_LOCK(&PL_threads_mutex);
3671 PL_nthreads++;
3672 thr->tid = ++PL_threadnum;
199100c8
MB		 3673 thr->next = t->next;
3674 thr->prev = t;
3675 t->next = thr;
3676 thr->next->prev = thr;
533c011a 3677 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3678
b099ddc0
GS		 3679 /* done copying parent's state */
3680 MUTEX_UNLOCK(&t->mutex);
3681
a863c7d1 3682#ifdef HAVE_THREAD_INTERN
4f63d024 3683 Perl_init_thread_intern(thr);
a863c7d1 3684#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3685 return thr;
3686}
11343788 3687#endif /* USE_THREADS */
760ac839 3688
4d46a988 3689#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3690/*
3691 * This hack is to force load of "huge" support from libm.a
3692 * So it is in perl for (say) POSIX to use.
3693 * Needed for SunOS with Sun's 'acc' for example.
3694 */
65202027 3695NV
8ac85365 3696Perl_huge(void)
760ac839 3697{
4d46a988
JH		 3698# if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3699 return HUGE_VALL;
3700# endif
3701 return HUGE_VAL;
760ac839
LW		 3702}
3703#endif
4e35701f 3704
22239a37
NIS		 3705#ifdef PERL_GLOBAL_STRUCT
3706struct perl_vars *
864dbfa3 3707Perl_GetVars(pTHX)
22239a37 3708{
533c011a 3709 return &PL_Vars;
22239a37 3710}
31fb1209
NIS		 3711#endif
3712
3713char **
864dbfa3 3714Perl_get_op_names(pTHX)
31fb1209 3715{
22c35a8c 3716 return PL_op_name;
31fb1209
NIS		 3717}
3718
3719char **
864dbfa3 3720Perl_get_op_descs(pTHX)
31fb1209 3721{
22c35a8c 3722 return PL_op_desc;
31fb1209 3723}
9e6b2b00
GS		 3724
3725char *
864dbfa3 3726Perl_get_no_modify(pTHX)
9e6b2b00 3727{
22c35a8c 3728 return (char*)PL_no_modify;
9e6b2b00
GS		 3729}
3730
3731U32 *
864dbfa3 3732Perl_get_opargs(pTHX)
9e6b2b00 3733{
22c35a8c 3734 return PL_opargs;
9e6b2b00 3735}
51aa15f3 3736
0cb96387
GS		 3737PPADDR_t*
3738Perl_get_ppaddr(pTHX)
3739{
12ae5dfc 3740 return (PPADDR_t*)PL_ppaddr;
0cb96387
GS		 3741}
3742
a6c40364
GS		 3743#ifndef HAS_GETENV_LEN
3744char *
bf4acbe4 3745Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
a6c40364
GS		 3746{
3747 char *env_trans = PerlEnv_getenv(env_elem);
3748 if (env_trans)
3749 *len = strlen(env_trans);
3750 return env_trans;
f675dbe5
CB		 3751}
3752#endif
3753
dc9e4912
GS		 3754
3755MGVTBL*
864dbfa3 3756Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3757{
3758 MGVTBL* result = Null(MGVTBL*);
3759
3760 switch(vtbl_id) {
3761 case want_vtbl_sv:
3762 result = &PL_vtbl_sv;
3763 break;
3764 case want_vtbl_env:
3765 result = &PL_vtbl_env;
3766 break;
3767 case want_vtbl_envelem:
3768 result = &PL_vtbl_envelem;
3769 break;
3770 case want_vtbl_sig:
3771 result = &PL_vtbl_sig;
3772 break;
3773 case want_vtbl_sigelem:
3774 result = &PL_vtbl_sigelem;
3775 break;
3776 case want_vtbl_pack:
3777 result = &PL_vtbl_pack;
3778 break;
3779 case want_vtbl_packelem:
3780 result = &PL_vtbl_packelem;
3781 break;
3782 case want_vtbl_dbline:
3783 result = &PL_vtbl_dbline;
3784 break;
3785 case want_vtbl_isa:
3786 result = &PL_vtbl_isa;
3787 break;
3788 case want_vtbl_isaelem:
3789 result = &PL_vtbl_isaelem;
3790 break;
3791 case want_vtbl_arylen:
3792 result = &PL_vtbl_arylen;
3793 break;
3794 case want_vtbl_glob:
3795 result = &PL_vtbl_glob;
3796 break;
3797 case want_vtbl_mglob:
3798 result = &PL_vtbl_mglob;
3799 break;
3800 case want_vtbl_nkeys:
3801 result = &PL_vtbl_nkeys;
3802 break;
3803 case want_vtbl_taint:
3804 result = &PL_vtbl_taint;
3805 break;
3806 case want_vtbl_substr:
3807 result = &PL_vtbl_substr;
3808 break;
3809 case want_vtbl_vec:
3810 result = &PL_vtbl_vec;
3811 break;
3812 case want_vtbl_pos:
3813 result = &PL_vtbl_pos;
3814 break;
3815 case want_vtbl_bm:
3816 result = &PL_vtbl_bm;
3817 break;
3818 case want_vtbl_fm:
3819 result = &PL_vtbl_fm;
3820 break;
3821 case want_vtbl_uvar:
3822 result = &PL_vtbl_uvar;
3823 break;
3824#ifdef USE_THREADS
3825 case want_vtbl_mutex:
3826 result = &PL_vtbl_mutex;
3827 break;
3828#endif
3829 case want_vtbl_defelem:
3830 result = &PL_vtbl_defelem;
3831 break;
3832 case want_vtbl_regexp:
3833 result = &PL_vtbl_regexp;
3834 break;
3835 case want_vtbl_regdata:
3836 result = &PL_vtbl_regdata;
3837 break;
3838 case want_vtbl_regdatum:
3839 result = &PL_vtbl_regdatum;
3840 break;
3c90161d 3841#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3842 case want_vtbl_collxfrm:
3843 result = &PL_vtbl_collxfrm;
3844 break;
3c90161d 3845#endif
dc9e4912
GS		 3846 case want_vtbl_amagic:
3847 result = &PL_vtbl_amagic;
3848 break;
3849 case want_vtbl_amagicelem:
3850 result = &PL_vtbl_amagicelem;
3851 break;
810b8aa5
GS		 3852 case want_vtbl_backref:
3853 result = &PL_vtbl_backref;
3854 break;
dc9e4912
GS		 3855 }
3856 return result;
3857}
3858
767df6a1 3859I32
864dbfa3 3860Perl_my_fflush_all(pTHX)
767df6a1
JH		 3861{
3862#ifdef FFLUSH_NULL
ce720889 3863 return PerlIO_flush(NULL);
767df6a1
JH		 3864#else
3865 long open_max = -1;
ed39a0f2 3866# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3867# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3868 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3869# else
767df6a1
JH		 3870# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3871 open_max = sysconf(_SC_OPEN_MAX);
3872# else
3873# ifdef FOPEN_MAX
d2201af2 3874 open_max = FOPEN_MAX;
767df6a1
JH		 3875# else
3876# ifdef OPEN_MAX
d2201af2 3877 open_max = OPEN_MAX;
767df6a1
JH		 3878# else
3879# ifdef _NFILE
d2201af2 3880 open_max = _NFILE;
767df6a1
JH		 3881# endif
3882# endif
3883# endif
3884# endif
d2201af2 3885# endif
767df6a1
JH		 3886 if (open_max > 0) {
3887 long i;
3888 for (i = 0; i < open_max; i++)
d2201af2
AD		 3889 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3890 STDIO_STREAM_ARRAY[i]._file < open_max &&
3891 STDIO_STREAM_ARRAY[i]._flag)
3892 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3893 return 0;
3894 }
3895# endif
3896 SETERRNO(EBADF,RMS$_IFI);
3897 return EOF;
3898#endif
3899}
097ee67d 3900
65202027 3901NV
69282e91
GS		 3902Perl_my_atof(pTHX_ const char* s)
3903{
ebd4816b 3904 NV x = 0.0;
097ee67d 3905#ifdef USE_LOCALE_NUMERIC
d43ce814 3906 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
ebd4816b 3907 NV y;
097ee67d 3908
ebd4816b 3909 Perl_atof2(s, x);
097ee67d 3910 SET_NUMERIC_STANDARD();
ebd4816b 3911 Perl_atof2(s, y);
097ee67d
JH		 3912 SET_NUMERIC_LOCAL();
3913 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3914 return y;
65202027
DS		 3915 }
3916 else
ebd4816b 3917 Perl_atof2(s, x);
097ee67d 3918#else
ebd4816b 3919 Perl_atof2(s, x);
097ee67d 3920#endif
ebd4816b 3921 return x;
097ee67d 3922}
69282e91
GS		 3923
3924void
bc37a18f
RG		 3925Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3926{
9c0fcd4f 3927 char *vile;
4e34385f 3928 I32 warn_type;
bc37a18f 3929 char *func =
66fc2fa5
JH		 3930 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3931 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
bc37a18f
RG		 3932 PL_op_desc[op];
3933 char *pars = OP_IS_FILETEST(op) ? "" : "()";
50952442 3934 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
2dd78f96 3935 "socket" : "filehandle";
9c0fcd4f 3936 char *name = NULL;
bc37a18f 3937
50952442 3938 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
9c0fcd4f 3939 vile = "closed";
4e34385f 3940 warn_type = WARN_CLOSED;
2dd78f96
JH		 3941 }
3942 else {
9c0fcd4f 3943 vile = "unopened";
4e34385f 3944 warn_type = WARN_UNOPENED;
9c0fcd4f 3945 }
bc37a18f 3946
66fc2fa5
JH		 3947 if (gv && isGV(gv)) {
3948 SV *sv = sv_newmortal();
3949 gv_efullname4(sv, gv, Nullch, FALSE);
3950 name = SvPVX(sv);
3951 }
3952
2dd78f96 3953 if (name && *name) {
4e34385f 3954 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3955 "%s%s on %s %s %s", func, pars, vile, type, name);
3e11456d 3956 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3957 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3958 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3959 func, pars, name);
2dd78f96
JH		 3960 }
3961 else {
4e34385f 3962 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3963 "%s%s on %s %s", func, pars, vile, type);
3e11456d 3964 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3965 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3966 "\t(Are you trying to call %s%s on dirhandle?)\n",
3967 func, pars);
3968 }
69282e91 3969}
Unnamed repository; edit this file 'description' to name the repository.