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[perl5.git] / util.c
CommitLineData
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;
662#endif /* USE_LOCALE_CTYPE */
663#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 664 if (! (curcoll =
665 setlocale(LC_COLLATE,
666 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 667 ? "" : Nullch)))
668 setlocale_failure = TRUE;
669#endif /* USE_LOCALE_COLLATE */
670#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 671 if (! (curnum =
672 setlocale(LC_NUMERIC,
673 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 674 ? "" : Nullch)))
675 setlocale_failure = TRUE;
676#endif /* USE_LOCALE_NUMERIC */
677 }
678
0644c9cb 679#endif /* LC_ALL */
02b32252 680
0644c9cb 681#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 682
0644c9cb 683#ifdef LC_ALL
bbce6d69 684 if (! setlocale(LC_ALL, ""))
685 setlocale_failure = TRUE;
0644c9cb 686#endif /* LC_ALL */
bbce6d69 687
0644c9cb 688 if (!setlocale_failure) {
36477c24 689#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 690 if (! (curctype = setlocale(LC_CTYPE, "")))
691 setlocale_failure = TRUE;
36477c24 692#endif /* USE_LOCALE_CTYPE */
693#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 694 if (! (curcoll = setlocale(LC_COLLATE, "")))
695 setlocale_failure = TRUE;
36477c24 696#endif /* USE_LOCALE_COLLATE */
697#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 698 if (! (curnum = setlocale(LC_NUMERIC, "")))
699 setlocale_failure = TRUE;
36477c24 700#endif /* USE_LOCALE_NUMERIC */
0644c9cb 701 }
02b32252 702
5f05dabc 703 if (setlocale_failure) {
704 char *p;
705 bool locwarn = (printwarn > 1 ||
155aba94
GS		 706 (printwarn &&
707 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 708
5f05dabc 709 if (locwarn) {
710#ifdef LC_ALL
711
bf49b057 712 PerlIO_printf(Perl_error_log,
5f05dabc 713 "perl: warning: Setting locale failed.\n");
714
715#else /* !LC_ALL */
716
bf49b057 717 PerlIO_printf(Perl_error_log,
bbce6d69 718 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 719#ifdef USE_LOCALE_CTYPE
bbce6d69 720 if (! curctype)
bf49b057 721 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 722#endif /* USE_LOCALE_CTYPE */
723#ifdef USE_LOCALE_COLLATE
bbce6d69 724 if (! curcoll)
bf49b057 725 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 726#endif /* USE_LOCALE_COLLATE */
727#ifdef USE_LOCALE_NUMERIC
bbce6d69 728 if (! curnum)
bf49b057 729 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 730#endif /* USE_LOCALE_NUMERIC */
bf49b057 731 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 732
5f05dabc 733#endif /* LC_ALL */
734
bf49b057 735 PerlIO_printf(Perl_error_log,
bbce6d69 736 "perl: warning: Please check that your locale settings:\n");
ef7eada9 737
3aeabbed 738#ifdef __GLIBC__
bf49b057 739 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 740 "\tLANGUAGE = %c%s%c,\n",
741 language ? '"' : '(',
742 language ? language : "unset",
743 language ? '"' : ')');
744#endif
745
bf49b057 746 PerlIO_printf(Perl_error_log,
bbce6d69 747 "\tLC_ALL = %c%s%c,\n",
748 lc_all ? '"' : '(',
749 lc_all ? lc_all : "unset",
750 lc_all ? '"' : ')');
5f05dabc 751
752 {
753 char **e;
754 for (e = environ; *e; e++) {
755 if (strnEQ(*e, "LC_", 3)
756 && strnNE(*e, "LC_ALL=", 7)
757 && (p = strchr(*e, '=')))
bf49b057 758 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 759 (int)(p - *e), *e, p + 1);
5f05dabc 760 }
761 }
762
bf49b057 763 PerlIO_printf(Perl_error_log,
bbce6d69 764 "\tLANG = %c%s%c\n",
5f05dabc 765 lang ? '"' : '(',
bbce6d69 766 lang ? lang : "unset",
767 lang ? '"' : ')');
ef7eada9 768
bf49b057 769 PerlIO_printf(Perl_error_log,
bbce6d69 770 " are supported and installed on your system.\n");
5f05dabc 771 }
ef7eada9 772
5f05dabc 773#ifdef LC_ALL
774
775 if (setlocale(LC_ALL, "C")) {
776 if (locwarn)
bf49b057 777 PerlIO_printf(Perl_error_log,
5f05dabc 778 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 779 ok = 0;
ef7eada9 780 }
5f05dabc 781 else {
782 if (locwarn)
bf49b057 783 PerlIO_printf(Perl_error_log,
5f05dabc 784 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
785 ok = -1;
786 }
bbce6d69 787
5f05dabc 788#else /* ! LC_ALL */
789
790 if (0
36477c24 791#ifdef USE_LOCALE_CTYPE
5f05dabc 792 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 793#endif /* USE_LOCALE_CTYPE */
794#ifdef USE_LOCALE_COLLATE
5f05dabc 795 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 796#endif /* USE_LOCALE_COLLATE */
797#ifdef USE_LOCALE_NUMERIC
5f05dabc 798 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 799#endif /* USE_LOCALE_NUMERIC */
5f05dabc 800 )
801 {
802 if (locwarn)
bf49b057 803 PerlIO_printf(Perl_error_log,
5f05dabc 804 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
805 ok = -1;
bbce6d69 806 }
5f05dabc 807
bbce6d69 808#endif /* ! LC_ALL */
5f05dabc 809
810#ifdef USE_LOCALE_CTYPE
811 curctype = setlocale(LC_CTYPE, Nullch);
812#endif /* USE_LOCALE_CTYPE */
813#ifdef USE_LOCALE_COLLATE
814 curcoll = setlocale(LC_COLLATE, Nullch);
815#endif /* USE_LOCALE_COLLATE */
816#ifdef USE_LOCALE_NUMERIC
817 curnum = setlocale(LC_NUMERIC, Nullch);
818#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 819 }
820
36477c24 821#ifdef USE_LOCALE_CTYPE
864dbfa3 822 new_ctype(curctype);
36477c24 823#endif /* USE_LOCALE_CTYPE */
bbce6d69 824
36477c24 825#ifdef USE_LOCALE_COLLATE
864dbfa3 826 new_collate(curcoll);
36477c24 827#endif /* USE_LOCALE_COLLATE */
bbce6d69 828
36477c24 829#ifdef USE_LOCALE_NUMERIC
864dbfa3 830 new_numeric(curnum);
36477c24 831#endif /* USE_LOCALE_NUMERIC */
ef7eada9 832
36477c24 833#endif /* USE_LOCALE */
ef7eada9 834
f0c5b223
TB		 835 return ok;
836}
837
bbce6d69 838/* Backwards compatibility. */
839int
864dbfa3 840Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 841{
864dbfa3 842 return init_i18nl10n(printwarn);
bbce6d69 843}
ef7eada9 844
36477c24 845#ifdef USE_LOCALE_COLLATE
ef7eada9 846
bbce6d69 847/*
848 * mem_collxfrm() is a bit like strxfrm() but with two important
849 * differences. First, it handles embedded NULs. Second, it allocates
850 * a bit more memory than needed for the transformed data itself.
851 * The real transformed data begins at offset sizeof(collationix).
852 * Please see sv_collxfrm() to see how this is used.
853 */
854char *
864dbfa3 855Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 856{
857 char *xbuf;
76e3520e 858 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 859
860 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
861 /* the +1 is for the terminating NUL. */
862
3280af22 863 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 864 New(171, xbuf, xAlloc, char);
bbce6d69 865 if (! xbuf)
866 goto bad;
867
3280af22
NIS		 868 *(U32*)xbuf = PL_collation_ix;
869 xout = sizeof(PL_collation_ix);
bbce6d69 870 for (xin = 0; xin < len; ) {
871 SSize_t xused;
872
873 for (;;) {
76e3520e 874 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 875 if (xused == -1)
876 goto bad;
76e3520e 877 if (xused < xAlloc - xout)
bbce6d69 878 break;
76e3520e
GS		 879 xAlloc = (2 * xAlloc) + 1;
880 Renew(xbuf, xAlloc, char);
bbce6d69 881 if (! xbuf)
882 goto bad;
883 }
ef7eada9 884
bbce6d69 885 xin += strlen(s + xin) + 1;
886 xout += xused;
887
888 /* Embedded NULs are understood but silently skipped
889 * because they make no sense in locale collation. */
890 }
ef7eada9 891
bbce6d69 892 xbuf[xout] = '\0';
3280af22 893 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 894 return xbuf;
895
896 bad:
897 Safefree(xbuf);
898 *xlen = 0;
899 return NULL;
ef7eada9
JH		 900}
901
36477c24 902#endif /* USE_LOCALE_COLLATE */
bbce6d69 903
cf93c79d
IZ		 904#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
905
906/* As a space optimization, we do not compile tables for strings of length
907 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
908 special-cased in fbm_instr().
909
910 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
911
954c1994
GS		 912/*
913=for apidoc fbm_compile
914
915Analyses the string in order to make fast searches on it using fbm_instr()
916-- the Boyer-Moore algorithm.
917
918=cut
919*/
920
378cc40b 921void
7506f9c3 922Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 923{
942e002e
GS		 924 register U8 *s;
925 register U8 *table;
79072805 926 register U32 i;
0b71040e 927 STRLEN len;
79072805
LW		 928 I32 rarest = 0;
929 U32 frequency = 256;
930
cf93c79d
IZ		 931 if (flags & FBMcf_TAIL)
932 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 933 s = (U8*)SvPV_force(sv, len);
07f14f54 934 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 935 if (len == 0) /* TAIL might be on on a zero-length string. */
936 return;
02128f11 937 if (len > 2) {
7506f9c3 938 U8 mlen;
cf93c79d
IZ		 939 unsigned char *sb;
940
7506f9c3 941 if (len > 255)
cf93c79d 942 mlen = 255;
7506f9c3
GS		 943 else
944 mlen = (U8)len;
945 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 946 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 947 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
948 memset((void*)table, mlen, 256);
949 table[-1] = (U8)flags;
02128f11 950 i = 0;
7506f9c3 951 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 952 while (s >= sb) {
953 if (table[*s] == mlen)
7506f9c3 954 table[*s] = (U8)i;
cf93c79d
IZ		 955 s--, i++;
956 }
378cc40b 957 }
bbce6d69 958 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 959 SvVALID_on(sv);
378cc40b 960
463ee0b2 961 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 962 for (i = 0; i < len; i++) {
22c35a8c 963 if (PL_freq[s[i]] < frequency) {
bbce6d69 964 rarest = i;
22c35a8c 965 frequency = PL_freq[s[i]];
378cc40b
LW		 966 }
967 }
79072805
LW		 968 BmRARE(sv) = s[rarest];
969 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 970 BmUSEFUL(sv) = 100; /* Initial value */
971 if (flags & FBMcf_TAIL)
972 SvTAIL_on(sv);
7506f9c3
GS		 973 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
974 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 975}
976
cf93c79d
IZ		 977/* If SvTAIL(littlestr), it has a fake '\n' at end. */
978/* If SvTAIL is actually due to \Z or \z, this gives false positives
979 if multiline */
980
954c1994
GS		 981/*
982=for apidoc fbm_instr
983
984Returns the location of the SV in the string delimited by C<str> and
985C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
986does not have to be fbm_compiled, but the search will not be as fast
987then.
988
989=cut
990*/
991
378cc40b 992char *
864dbfa3 993Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 994{
a687059c 995 register unsigned char *s;
cf93c79d
IZ		 996 STRLEN l;
997 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
998 register STRLEN littlelen = l;
999 register I32 multiline = flags & FBMrf_MULTILINE;
1000
1001 if (bigend - big < littlelen) {
cf93c79d
IZ		 1002 if ( SvTAIL(littlestr)
1003 && (bigend - big == littlelen - 1)
1004 && (littlelen == 1
12ae5dfc
JH		 1005 || (*big == *little &&
1006 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1007 return (char*)big;
1008 return Nullch;
1009 }
378cc40b 1010
cf93c79d 1011 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1012
1013 if (littlelen == 1) {
1014 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1015 /* Know that bigend != big. */
1016 if (bigend[-1] == '\n')
1017 return (char *)(bigend - 1);
1018 return (char *) bigend;
1019 }
1020 s = big;
1021 while (s < bigend) {
1022 if (*s == *little)
1023 return (char *)s;
1024 s++;
1025 }
1026 if (SvTAIL(littlestr))
1027 return (char *) bigend;
1028 return Nullch;
1029 }
1030 if (!littlelen)
1031 return (char*)big; /* Cannot be SvTAIL! */
1032
1033 /* littlelen is 2 */
1034 if (SvTAIL(littlestr) && !multiline) {
1035 if (bigend[-1] == '\n' && bigend[-2] == *little)
1036 return (char*)bigend - 2;
1037 if (bigend[-1] == *little)
1038 return (char*)bigend - 1;
1039 return Nullch;
1040 }
1041 {
1042 /* This should be better than FBM if c1 == c2, and almost
1043 as good otherwise: maybe better since we do less indirection.
1044 And we save a lot of memory by caching no table. */
1045 register unsigned char c1 = little[0];
1046 register unsigned char c2 = little[1];
1047
1048 s = big + 1;
1049 bigend--;
1050 if (c1 != c2) {
1051 while (s <= bigend) {
1052 if (s[0] == c2) {
1053 if (s[-1] == c1)
1054 return (char*)s - 1;
1055 s += 2;
1056 continue;
3fe6f2dc 1057 }
cf93c79d
IZ		 1058 next_chars:
1059 if (s[0] == c1) {
1060 if (s == bigend)
1061 goto check_1char_anchor;
1062 if (s[1] == c2)
1063 return (char*)s;
1064 else {
1065 s++;
1066 goto next_chars;
1067 }
1068 }
1069 else
1070 s += 2;
1071 }
1072 goto check_1char_anchor;
1073 }
1074 /* Now c1 == c2 */
1075 while (s <= bigend) {
1076 if (s[0] == c1) {
1077 if (s[-1] == c1)
1078 return (char*)s - 1;
1079 if (s == bigend)
1080 goto check_1char_anchor;
1081 if (s[1] == c1)
1082 return (char*)s;
1083 s += 3;
02128f11 1084 }
c277df42 1085 else
cf93c79d 1086 s += 2;
c277df42 1087 }
c277df42 1088 }
cf93c79d
IZ		 1089 check_1char_anchor: /* One char and anchor! */
1090 if (SvTAIL(littlestr) && (*bigend == *little))
1091 return (char *)bigend; /* bigend is already decremented. */
1092 return Nullch;
d48672a2 1093 }
cf93c79d 1094 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1095 s = bigend - littlelen;
7506f9c3 1096 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1097 /* Automatically of length > 2 */
1098 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1099 {
bbce6d69 1100 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1101 }
1102 if (s[1] == *little
1103 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1104 {
cf93c79d 1105 return (char*)s + 1; /* how sweet it is */
7506f9c3 1106 }
02128f11
IZ		 1107 return Nullch;
1108 }
cf93c79d
IZ		 1109 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1110 char *b = ninstr((char*)big,(char*)bigend,
1111 (char*)little, (char*)little + littlelen);
1112
1113 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1114 /* Chop \n from littlestr: */
1115 s = bigend - littlelen + 1;
7506f9c3
GS		 1116 if (*s == *little
1117 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1118 {
3fe6f2dc 1119 return (char*)s;
7506f9c3 1120 }
cf93c79d 1121 return Nullch;
a687059c 1122 }
cf93c79d 1123 return b;
a687059c 1124 }
cf93c79d
IZ		 1125
1126 { /* Do actual FBM. */
1127 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1128 register unsigned char *oldlittle;
1129
1130 if (littlelen > bigend - big)
1131 return Nullch;
1132 --littlelen; /* Last char found by table lookup */
1133
1134 s = big + littlelen;
1135 little += littlelen; /* last char */
1136 oldlittle = little;
1137 if (s < bigend) {
1138 register I32 tmp;
1139
1140 top2:
1141 /*SUPPRESS 560*/
7506f9c3 1142 if ((tmp = table[*s])) {
62b28dd9 1143#ifdef POINTERRIGOR
cf93c79d
IZ		 1144 if (bigend - s > tmp) {
1145 s += tmp;
1146 goto top2;
1147 }
bbce6d69 1148 s += tmp;
62b28dd9 1149#else
cf93c79d 1150 if ((s += tmp) < bigend)
62b28dd9 1151 goto top2;
cf93c79d
IZ		 1152#endif
1153 goto check_end;
1154 }
1155 else { /* less expensive than calling strncmp() */
1156 register unsigned char *olds = s;
1157
1158 tmp = littlelen;
1159
1160 while (tmp--) {
1161 if (*--s == *--little)
1162 continue;
cf93c79d
IZ		 1163 s = olds + 1; /* here we pay the price for failure */
1164 little = oldlittle;
1165 if (s < bigend) /* fake up continue to outer loop */
1166 goto top2;
1167 goto check_end;
1168 }
1169 return (char *)s;
a687059c 1170 }
378cc40b 1171 }
cf93c79d
IZ		 1172 check_end:
1173 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1174 && memEQ((char *)(bigend - littlelen),
1175 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1176 return (char*)bigend - littlelen;
1177 return Nullch;
378cc40b 1178 }
378cc40b
LW		 1179}
1180
c277df42
IZ		 1181/* start_shift, end_shift are positive quantities which give offsets
1182 of ends of some substring of bigstr.
1183 If `last' we want the last occurence.
1184 old_posp is the way of communication between consequent calls if
1185 the next call needs to find the .
1186 The initial *old_posp should be -1.
cf93c79d
IZ		 1187
1188 Note that we take into account SvTAIL, so one can get extra
1189 optimizations if _ALL flag is set.
c277df42
IZ		 1190 */
1191
cf93c79d
IZ		 1192/* If SvTAIL is actually due to \Z or \z, this gives false positives
1193 if PL_multiline. In fact if !PL_multiline the autoritative answer
1194 is not supported yet. */
1195
378cc40b 1196char *
864dbfa3 1197Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1198{
5c0ca799 1199 dTHR;
a687059c
LW		 1200 register unsigned char *s, *x;
1201 register unsigned char *big;
79072805
LW		 1202 register I32 pos;
1203 register I32 previous;
1204 register I32 first;
a687059c 1205 register unsigned char *little;
c277df42 1206 register I32 stop_pos;
a687059c 1207 register unsigned char *littleend;
c277df42 1208 I32 found = 0;
378cc40b 1209
c277df42 1210 if (*old_posp == -1
3280af22 1211 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1212 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1213 cant_find:
1214 if ( BmRARE(littlestr) == '\n'
1215 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1216 little = (unsigned char *)(SvPVX(littlestr));
1217 littleend = little + SvCUR(littlestr);
1218 first = *little++;
1219 goto check_tail;
1220 }
378cc40b 1221 return Nullch;
cf93c79d
IZ		 1222 }
1223
463ee0b2 1224 little = (unsigned char *)(SvPVX(littlestr));
79072805 1225 littleend = little + SvCUR(littlestr);
378cc40b 1226 first = *little++;
c277df42 1227 /* The value of pos we can start at: */
79072805 1228 previous = BmPREVIOUS(littlestr);
463ee0b2 1229 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1230 /* The value of pos we can stop at: */
1231 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1232 if (previous + start_shift > stop_pos) {
1233 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1234 goto check_tail;
1235 return Nullch;
1236 }
c277df42 1237 while (pos < previous + start_shift) {
3280af22 1238 if (!(pos += PL_screamnext[pos]))
cf93c79d 1239 goto cant_find;
378cc40b 1240 }
de3bb511 1241#ifdef POINTERRIGOR
bbce6d69 1242 do {
ef64f398 1243 if (pos >= stop_pos) break;
bbce6d69 1244 if (big[pos-previous] != first)
1245 continue;
1246 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1247 if (*s++ != *x++) {
1248 s--;
1249 break;
de3bb511 1250 }
bbce6d69 1251 }
c277df42
IZ		 1252 if (s == littleend) {
1253 *old_posp = pos;
1254 if (!last) return (char *)(big+pos-previous);
1255 found = 1;
1256 }
6b88bc9c 1257 } while ( pos += PL_screamnext[pos] );
c277df42 1258 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1259#else /* !POINTERRIGOR */
1260 big -= previous;
bbce6d69 1261 do {
ef64f398 1262 if (pos >= stop_pos) break;
bbce6d69 1263 if (big[pos] != first)
1264 continue;
1265 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1266 if (*s++ != *x++) {
1267 s--;
1268 break;
378cc40b 1269 }
bbce6d69 1270 }
c277df42
IZ		 1271 if (s == littleend) {
1272 *old_posp = pos;
1273 if (!last) return (char *)(big+pos);
1274 found = 1;
1275 }
3280af22 1276 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1277 if (last && found)
1278 return (char *)(big+(*old_posp));
de3bb511 1279#endif /* POINTERRIGOR */
cf93c79d
IZ		 1280 check_tail:
1281 if (!SvTAIL(littlestr) || (end_shift > 0))
1282 return Nullch;
1283 /* Ignore the trailing "\n". This code is not microoptimized */
1284 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1285 stop_pos = littleend - little; /* Actual littlestr len */
1286 if (stop_pos == 0)
1287 return (char*)big;
1288 big -= stop_pos;
1289 if (*big == first
12ae5dfc
JH		 1290 && ((stop_pos == 1) ||
1291 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1292 return (char*)big;
1293 return Nullch;
8d063cd8
LW		 1294}
1295
79072805 1296I32
864dbfa3 1297Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1298{
bbce6d69 1299 register U8 *a = (U8 *)s1;
1300 register U8 *b = (U8 *)s2;
79072805 1301 while (len--) {
22c35a8c 1302 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1303 return 1;
1304 a++,b++;
1305 }
1306 return 0;
1307}
1308
1309I32
864dbfa3 1310Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1311{
1312 register U8 *a = (U8 *)s1;
1313 register U8 *b = (U8 *)s2;
1314 while (len--) {
22c35a8c 1315 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1316 return 1;
1317 a++,b++;
79072805
LW		 1318 }
1319 return 0;
1320}
1321
8d063cd8
LW		 1322/* copy a string to a safe spot */
1323
954c1994
GS		 1324/*
1325=for apidoc savepv
1326
1327Copy a string to a safe spot. This does not use an SV.
1328
1329=cut
1330*/
1331
8d063cd8 1332char *
864dbfa3 1333Perl_savepv(pTHX_ const char *sv)
8d063cd8 1334{
a687059c 1335 register char *newaddr;
8d063cd8 1336
79072805
LW		 1337 New(902,newaddr,strlen(sv)+1,char);
1338 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1339 return newaddr;
1340}
1341
a687059c
LW		 1342/* same thing but with a known length */
1343
954c1994
GS		 1344/*
1345=for apidoc savepvn
1346
1347Copy a string to a safe spot. The C<len> indicates number of bytes to
1348copy. This does not use an SV.
1349
1350=cut
1351*/
1352
a687059c 1353char *
864dbfa3 1354Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1355{
1356 register char *newaddr;
1357
1358 New(903,newaddr,len+1,char);
79072805 1359 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1360 newaddr[len] = '\0'; /* is now */
1361 return newaddr;
1362}
1363
cea2e8a9 1364/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1365
76e3520e 1366STATIC SV *
cea2e8a9 1367S_mess_alloc(pTHX)
fc36a67e 1368{
e72dc28c 1369 dTHR;
fc36a67e 1370 SV *sv;
1371 XPVMG *any;
1372
e72dc28c
GS		 1373 if (!PL_dirty)
1374 return sv_2mortal(newSVpvn("",0));
1375
0372dbb6
GS		 1376 if (PL_mess_sv)
1377 return PL_mess_sv;
1378
fc36a67e 1379 /* Create as PVMG now, to avoid any upgrading later */
1380 New(905, sv, 1, SV);
1381 Newz(905, any, 1, XPVMG);
1382 SvFLAGS(sv) = SVt_PVMG;
1383 SvANY(sv) = (void*)any;
1384 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1385 PL_mess_sv = sv;
fc36a67e 1386 return sv;
1387}
1388
c5be433b 1389#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1390char *
1391Perl_form_nocontext(const char* pat, ...)
1392{
1393 dTHX;
c5be433b 1394 char *retval;
cea2e8a9
GS		 1395 va_list args;
1396 va_start(args, pat);
c5be433b 1397 retval = vform(pat, &args);
cea2e8a9 1398 va_end(args);
c5be433b 1399 return retval;
cea2e8a9 1400}
c5be433b 1401#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1402
8990e307 1403char *
864dbfa3 1404Perl_form(pTHX_ const char* pat, ...)
8990e307 1405{
c5be433b 1406 char *retval;
46fc3d4c 1407 va_list args;
46fc3d4c 1408 va_start(args, pat);
c5be433b 1409 retval = vform(pat, &args);
46fc3d4c 1410 va_end(args);
c5be433b
GS		 1411 return retval;
1412}
1413
1414char *
1415Perl_vform(pTHX_ const char *pat, va_list *args)
1416{
1417 SV *sv = mess_alloc();
1418 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1419 return SvPVX(sv);
46fc3d4c 1420}
a687059c 1421
5a844595
GS		 1422#if defined(PERL_IMPLICIT_CONTEXT)
1423SV *
1424Perl_mess_nocontext(const char *pat, ...)
1425{
1426 dTHX;
1427 SV *retval;
1428 va_list args;
1429 va_start(args, pat);
1430 retval = vmess(pat, &args);
1431 va_end(args);
1432 return retval;
1433}
1434#endif /* PERL_IMPLICIT_CONTEXT */
1435
06bf62c7 1436SV *
5a844595
GS		 1437Perl_mess(pTHX_ const char *pat, ...)
1438{
1439 SV *retval;
1440 va_list args;
1441 va_start(args, pat);
1442 retval = vmess(pat, &args);
1443 va_end(args);
1444 return retval;
1445}
1446
1447SV *
1448Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1449{
e72dc28c 1450 SV *sv = mess_alloc();
46fc3d4c 1451 static char dgd[] = " during global destruction.\n";
1452
fc36a67e 1453 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1454 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1455 dTHR;
57843af0 1456 if (CopLINE(PL_curcop))
ed094faf
GS		 1457 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1458 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1459 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1460 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1461 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1462 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1463 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1464 line_mode ? "line" : "chunk",
1465 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1466 }
9efbc0eb 1467#ifdef USE_THREADS
e8e6f333
GS		 1468 if (thr->tid)
1469 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1470#endif
515f54a1 1471 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1472 }
06bf62c7 1473 return sv;
a687059c
LW		 1474}
1475
c5be433b
GS		 1476OP *
1477Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1478{
5dc0d613 1479 dTHR;
36477c24 1480 char *message;
3280af22 1481 int was_in_eval = PL_in_eval;
36477c24 1482 HV *stash;
1483 GV *gv;
1484 CV *cv;
06bf62c7
GS		 1485 SV *msv;
1486 STRLEN msglen;
36477c24 1487
bf49b057 1488 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1489 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1490 thr, PL_curstack, PL_mainstack));
36477c24 1491
06bf62c7 1492 if (pat) {
5a844595
GS		 1493 msv = vmess(pat, args);
1494 if (PL_errors && SvCUR(PL_errors)) {
1495 sv_catsv(PL_errors, msv);
1496 message = SvPV(PL_errors, msglen);
1497 SvCUR_set(PL_errors, 0);
1498 }
1499 else
1500 message = SvPV(msv,msglen);
06bf62c7
GS		 1501 }
1502 else {
1503 message = Nullch;
0f79a09d 1504 msglen = 0;
06bf62c7 1505 }
36477c24 1506
bf49b057 1507 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1508 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1509 thr, message, PL_diehook));
3280af22 1510 if (PL_diehook) {
cea2e8a9 1511 /* sv_2cv might call Perl_croak() */
3280af22 1512 SV *olddiehook = PL_diehook;
1738f5c4 1513 ENTER;
3280af22
NIS		 1514 SAVESPTR(PL_diehook);
1515 PL_diehook = Nullsv;
1738f5c4
CS		 1516 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1517 LEAVE;
1518 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1519 dSP;
774d564b 1520 SV *msg;
1521
1522 ENTER;
3a1f2dc9 1523 save_re_context();
79cb57f6 1524 if (message) {
06bf62c7 1525 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1526 SvREADONLY_on(msg);
1527 SAVEFREESV(msg);
1528 }
1529 else {
1530 msg = ERRSV;
1531 }
1738f5c4 1532
e788e7d3 1533 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1534 PUSHMARK(SP);
1738f5c4
CS		 1535 XPUSHs(msg);
1536 PUTBACK;
0cdb2077 1537 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1538 POPSTACK;
774d564b 1539 LEAVE;
1738f5c4 1540 }
36477c24 1541 }
1542
06bf62c7 1543 PL_restartop = die_where(message, msglen);
bf49b057 1544 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1545 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1546 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1547 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1548 JMPENV_JUMP(3);
3280af22 1549 return PL_restartop;
36477c24 1550}
1551
c5be433b 1552#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1553OP *
1554Perl_die_nocontext(const char* pat, ...)
a687059c 1555{
cea2e8a9
GS		 1556 dTHX;
1557 OP *o;
a687059c 1558 va_list args;
cea2e8a9 1559 va_start(args, pat);
c5be433b 1560 o = vdie(pat, &args);
cea2e8a9
GS		 1561 va_end(args);
1562 return o;
1563}
c5be433b 1564#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1565
1566OP *
1567Perl_die(pTHX_ const char* pat, ...)
1568{
1569 OP *o;
1570 va_list args;
1571 va_start(args, pat);
c5be433b 1572 o = vdie(pat, &args);
cea2e8a9
GS		 1573 va_end(args);
1574 return o;
1575}
1576
c5be433b
GS		 1577void
1578Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1579{
1580 dTHR;
de3bb511 1581 char *message;
748a9306
LW		 1582 HV *stash;
1583 GV *gv;
1584 CV *cv;
06bf62c7
GS		 1585 SV *msv;
1586 STRLEN msglen;
a687059c 1587
9983fa3c
GS		 1588 if (pat) {
1589 msv = vmess(pat, args);
1590 if (PL_errors && SvCUR(PL_errors)) {
1591 sv_catsv(PL_errors, msv);
1592 message = SvPV(PL_errors, msglen);
1593 SvCUR_set(PL_errors, 0);
1594 }
1595 else
1596 message = SvPV(msv,msglen);
1597 }
1598 else {
1599 message = Nullch;
1600 msglen = 0;
5a844595 1601 }
5a844595 1602
b900a521
JH		 1603 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1604 PTR2UV(thr), message));
5a844595 1605
3280af22 1606 if (PL_diehook) {
cea2e8a9 1607 /* sv_2cv might call Perl_croak() */
3280af22 1608 SV *olddiehook = PL_diehook;
1738f5c4 1609 ENTER;
3280af22
NIS		 1610 SAVESPTR(PL_diehook);
1611 PL_diehook = Nullsv;
20cec16a 1612 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1613 LEAVE;
1614 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1615 dSP;
774d564b 1616 SV *msg;
1617
1618 ENTER;
3a1f2dc9 1619 save_re_context();
9983fa3c
GS		 1620 if (message) {
1621 msg = newSVpvn(message, msglen);
1622 SvREADONLY_on(msg);
1623 SAVEFREESV(msg);
1624 }
1625 else {
1626 msg = ERRSV;
1627 }
20cec16a 1628
e788e7d3 1629 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1630 PUSHMARK(SP);
1738f5c4 1631 XPUSHs(msg);
20cec16a 1632 PUTBACK;
864dbfa3 1633 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1634 POPSTACK;
774d564b 1635 LEAVE;
20cec16a 1636 }
748a9306 1637 }
3280af22 1638 if (PL_in_eval) {
06bf62c7 1639 PL_restartop = die_where(message, msglen);
6224f72b 1640 JMPENV_JUMP(3);
a0d0e21e 1641 }
d175a3f0
GS		 1642 {
1643#ifdef USE_SFIO
1644 /* SFIO can really mess with your errno */
1645 int e = errno;
1646#endif
bf49b057
GS		 1647 PerlIO *serr = Perl_error_log;
1648
1649 PerlIO_write(serr, message, msglen);
1650 (void)PerlIO_flush(serr);
d175a3f0
GS		 1651#ifdef USE_SFIO
1652 errno = e;
1653#endif
1654 }
f86702cc 1655 my_failure_exit();
a687059c
LW		 1656}
1657
c5be433b 1658#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1659void
cea2e8a9 1660Perl_croak_nocontext(const char *pat, ...)
a687059c 1661{
cea2e8a9 1662 dTHX;
a687059c 1663 va_list args;
cea2e8a9 1664 va_start(args, pat);
c5be433b 1665 vcroak(pat, &args);
cea2e8a9
GS		 1666 /* NOTREACHED */
1667 va_end(args);
1668}
1669#endif /* PERL_IMPLICIT_CONTEXT */
1670
954c1994
GS		 1671/*
1672=for apidoc croak
1673
9983fa3c
GS		 1674This is the XSUB-writer's interface to Perl's C<die> function.
1675Normally use this function the same way you use the C C<printf>
1676function. See C<warn>.
1677
1678If you want to throw an exception object, assign the object to
1679C<$@> and then pass C<Nullch> to croak():
1680
1681 errsv = get_sv("@", TRUE);
1682 sv_setsv(errsv, exception_object);
1683 croak(Nullch);
954c1994
GS		 1684
1685=cut
1686*/
1687
cea2e8a9
GS		 1688void
1689Perl_croak(pTHX_ const char *pat, ...)
1690{
1691 va_list args;
1692 va_start(args, pat);
c5be433b 1693 vcroak(pat, &args);
cea2e8a9
GS		 1694 /* NOTREACHED */
1695 va_end(args);
1696}
1697
c5be433b
GS		 1698void
1699Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1700{
de3bb511 1701 char *message;
748a9306
LW		 1702 HV *stash;
1703 GV *gv;
1704 CV *cv;
06bf62c7
GS		 1705 SV *msv;
1706 STRLEN msglen;
a687059c 1707
5a844595 1708 msv = vmess(pat, args);
06bf62c7 1709 message = SvPV(msv, msglen);
a687059c 1710
3280af22 1711 if (PL_warnhook) {
cea2e8a9 1712 /* sv_2cv might call Perl_warn() */
11343788 1713 dTHR;
3280af22 1714 SV *oldwarnhook = PL_warnhook;
1738f5c4 1715 ENTER;
3280af22
NIS		 1716 SAVESPTR(PL_warnhook);
1717 PL_warnhook = Nullsv;
20cec16a 1718 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1719 LEAVE;
1720 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1721 dSP;
774d564b 1722 SV *msg;
1723
1724 ENTER;
3a1f2dc9 1725 save_re_context();
06bf62c7 1726 msg = newSVpvn(message, msglen);
774d564b 1727 SvREADONLY_on(msg);
1728 SAVEFREESV(msg);
1729
e788e7d3 1730 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1731 PUSHMARK(SP);
774d564b 1732 XPUSHs(msg);
20cec16a 1733 PUTBACK;
864dbfa3 1734 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1735 POPSTACK;
774d564b 1736 LEAVE;
20cec16a 1737 return;
1738 }
748a9306 1739 }
bf49b057
GS		 1740 {
1741 PerlIO *serr = Perl_error_log;
1742
1743 PerlIO_write(serr, message, msglen);
a687059c 1744#ifdef LEAKTEST
bf49b057
GS		 1745 DEBUG_L(*message == '!'
1746 ? (xstat(message[1]=='!'
1747 ? (message[2]=='!' ? 2 : 1)
1748 : 0)
1749 , 0)
1750 : 0);
a687059c 1751#endif
bf49b057
GS		 1752 (void)PerlIO_flush(serr);
1753 }
a687059c 1754}
8d063cd8 1755
c5be433b 1756#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1757void
1758Perl_warn_nocontext(const char *pat, ...)
1759{
1760 dTHX;
1761 va_list args;
1762 va_start(args, pat);
c5be433b 1763 vwarn(pat, &args);
cea2e8a9
GS		 1764 va_end(args);
1765}
1766#endif /* PERL_IMPLICIT_CONTEXT */
1767
954c1994
GS		 1768/*
1769=for apidoc warn
1770
1771This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1772function the same way you use the C C<printf> function. See
1773C<croak>.
1774
1775=cut
1776*/
1777
cea2e8a9
GS		 1778void
1779Perl_warn(pTHX_ const char *pat, ...)
1780{
1781 va_list args;
1782 va_start(args, pat);
c5be433b 1783 vwarn(pat, &args);
cea2e8a9
GS		 1784 va_end(args);
1785}
1786
c5be433b
GS		 1787#if defined(PERL_IMPLICIT_CONTEXT)
1788void
1789Perl_warner_nocontext(U32 err, const char *pat, ...)
1790{
1791 dTHX;
1792 va_list args;
1793 va_start(args, pat);
1794 vwarner(err, pat, &args);
1795 va_end(args);
1796}
1797#endif /* PERL_IMPLICIT_CONTEXT */
1798
599cee73 1799void
864dbfa3 1800Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1801{
1802 va_list args;
c5be433b
GS		 1803 va_start(args, pat);
1804 vwarner(err, pat, &args);
1805 va_end(args);
1806}
1807
1808void
1809Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1810{
1811 dTHR;
599cee73
PM		 1812 char *message;
1813 HV *stash;
1814 GV *gv;
1815 CV *cv;
06bf62c7
GS		 1816 SV *msv;
1817 STRLEN msglen;
599cee73 1818
5a844595 1819 msv = vmess(pat, args);
06bf62c7 1820 message = SvPV(msv, msglen);
599cee73
PM		 1821
1822 if (ckDEAD(err)) {
1823#ifdef USE_THREADS
b900a521 1824 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1825#endif /* USE_THREADS */
1826 if (PL_diehook) {
cea2e8a9 1827 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1828 SV *olddiehook = PL_diehook;
1829 ENTER;
1830 SAVESPTR(PL_diehook);
1831 PL_diehook = Nullsv;
1832 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1833 LEAVE;
1834 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1835 dSP;
1836 SV *msg;
1837
1838 ENTER;
3a1f2dc9 1839 save_re_context();
06bf62c7 1840 msg = newSVpvn(message, msglen);
599cee73
PM		 1841 SvREADONLY_on(msg);
1842 SAVEFREESV(msg);
1843
3a1f2dc9 1844 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1845 PUSHMARK(sp);
1846 XPUSHs(msg);
1847 PUTBACK;
864dbfa3 1848 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1849 POPSTACK;
599cee73
PM		 1850 LEAVE;
1851 }
1852 }
1853 if (PL_in_eval) {
06bf62c7 1854 PL_restartop = die_where(message, msglen);
599cee73
PM		 1855 JMPENV_JUMP(3);
1856 }
bf49b057
GS		 1857 {
1858 PerlIO *serr = Perl_error_log;
1859 PerlIO_write(serr, message, msglen);
1860 (void)PerlIO_flush(serr);
1861 }
599cee73
PM		 1862 my_failure_exit();
1863
1864 }
1865 else {
1866 if (PL_warnhook) {
cea2e8a9 1867 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1868 dTHR;
1869 SV *oldwarnhook = PL_warnhook;
1870 ENTER;
1871 SAVESPTR(PL_warnhook);
1872 PL_warnhook = Nullsv;
1873 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1874 LEAVE;
599cee73
PM		 1875 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1876 dSP;
1877 SV *msg;
1878
1879 ENTER;
3a1f2dc9 1880 save_re_context();
06bf62c7 1881 msg = newSVpvn(message, msglen);
599cee73
PM		 1882 SvREADONLY_on(msg);
1883 SAVEFREESV(msg);
1884
3a1f2dc9 1885 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1886 PUSHMARK(sp);
1887 XPUSHs(msg);
1888 PUTBACK;
864dbfa3 1889 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1890 POPSTACK;
599cee73
PM		 1891 LEAVE;
1892 return;
1893 }
1894 }
bf49b057
GS		 1895 {
1896 PerlIO *serr = Perl_error_log;
1897 PerlIO_write(serr, message, msglen);
599cee73 1898#ifdef LEAKTEST
06247ec9
JH		 1899 DEBUG_L(*message == '!'
1900 ? (xstat(message[1]=='!'
1901 ? (message[2]=='!' ? 2 : 1)
1902 : 0)
1903 , 0)
1904 : 0);
599cee73 1905#endif
bf49b057
GS		 1906 (void)PerlIO_flush(serr);
1907 }
599cee73
PM		 1908 }
1909}
1910
a0d0e21e 1911#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1912#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1913void
864dbfa3 1914Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1915{
f2517201
GS		 1916#ifndef PERL_USE_SAFE_PUTENV
1917 /* most putenv()s leak, so we manipulate environ directly */
79072805 1918 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1919
3280af22 1920 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1921 I32 j;
1922 I32 max;
fe14fcc3
LW		 1923 char **tmpenv;
1924
de3bb511 1925 /*SUPPRESS 530*/
fe14fcc3 1926 for (max = i; environ[max]; max++) ;
f2517201
GS		 1927 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1928 for (j=0; j<max; j++) { /* copy environment */
1929 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1930 strcpy(tmpenv[j], environ[j]);
1931 }
fe14fcc3
LW		 1932 tmpenv[max] = Nullch;
1933 environ = tmpenv; /* tell exec where it is now */
1934 }
a687059c 1935 if (!val) {
f2517201 1936 safesysfree(environ[i]);
a687059c
LW		 1937 while (environ[i]) {
1938 environ[i] = environ[i+1];
1939 i++;
1940 }
1941 return;
1942 }
8d063cd8 1943 if (!environ[i]) { /* does not exist yet */
f2517201 1944 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1945 environ[i+1] = Nullch; /* make sure it's null terminated */
1946 }
fe14fcc3 1947 else
f2517201
GS		 1948 safesysfree(environ[i]);
1949 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1950
a687059c 1951 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1952
1953#else /* PERL_USE_SAFE_PUTENV */
1954 char *new_env;
1955
1956 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1957 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1958 (void)putenv(new_env);
1959#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1960}
1961
d308986b
GS		 1962#else /* WIN32 || __CYGWIN__ */
1963#if defined(__CYGWIN__)
1cab015a
EF		 1964/*
1965 * Save environ of perl.exe, currently Cygwin links in separate environ's
1966 * for each exe/dll. Probably should be a member of impure_ptr.
1967 */
1968static char ***Perl_main_environ;
1969
1970EXTERN_C void
1971Perl_my_setenv_init(char ***penviron)
1972{
1973 Perl_main_environ = penviron;
1974}
1975
1976void
0a9fdc5d 1977Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 1978{
1979 /* You can not directly manipulate the environ[] array because
1980 * the routines do some additional work that syncs the Cygwin
1981 * environment with the Windows environment.
1982 */
1983 char *oldstr = environ[setenv_getix(nam)];
1984
1985 if (!val) {
1986 if (!oldstr)
1987 return;
1988 unsetenv(nam);
d702ae42 1989 safesysfree(oldstr);
1cab015a
EF		 1990 return;
1991 }
1992 setenv(nam, val, 1);
1993 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1994 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1995 safesysfree(oldstr);
1cab015a 1996}
3e3baf6d 1997#else /* if WIN32 */
68dc0745 1998
1999void
864dbfa3 2000Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2001{
3e3baf6d
TB		 2002
2003#ifdef USE_WIN32_RTL_ENV
2004
68dc0745 2005 register char *envstr;
2006 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 2007 STRLEN vallen;
2008 char *oldstr = environ[setenv_getix(nam)];
2009
2010 /* putenv() has totally broken semantics in both the Borland
2011 * and Microsoft CRTLs. They either store the passed pointer in
2012 * the environment without making a copy, or make a copy and don't
2013 * free it. And on top of that, they dont free() old entries that
2014 * are being replaced/deleted. This means the caller must
2015 * free any old entries somehow, or we end up with a memory
2016 * leak every time my_setenv() is called. One might think
2017 * one could directly manipulate environ[], like the UNIX code
2018 * above, but direct changes to environ are not allowed when
2019 * calling putenv(), since the RTLs maintain an internal
2020 * *copy* of environ[]. Bad, bad, *bad* stink.
2021 * GSAR 97-06-07
2022 */
68dc0745 2023
3e3baf6d
TB		 2024 if (!val) {
2025 if (!oldstr)
2026 return;
2027 val = "";
2028 vallen = 0;
2029 }
2030 else
2031 vallen = strlen(val);
f2517201 2032 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2033 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2034 (void)PerlEnv_putenv(envstr);
3e3baf6d 2035 if (oldstr)
f2517201 2036 safesysfree(oldstr);
3e3baf6d 2037#ifdef _MSC_VER
f2517201 2038 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2039#endif
2040
2041#else /* !USE_WIN32_RTL_ENV */
2042
ac5c734f
GS		 2043 register char *envstr;
2044 STRLEN len = strlen(nam) + 3;
2045 if (!val) {
2046 val = "";
2047 }
2048 len += strlen(val);
2049 New(904, envstr, len, char);
2050 (void)sprintf(envstr,"%s=%s",nam,val);
2051 (void)PerlEnv_putenv(envstr);
2052 Safefree(envstr);
3e3baf6d
TB		 2053
2054#endif
2055}
2056
2057#endif /* WIN32 */
1cab015a 2058#endif
3e3baf6d
TB		 2059
2060I32
864dbfa3 2061Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2062{
2063 register I32 i, len = strlen(nam);
2064
2065 for (i = 0; environ[i]; i++) {
2066 if (
2067#ifdef WIN32
2068 strnicmp(environ[i],nam,len) == 0
2069#else
2070 strnEQ(environ[i],nam,len)
2071#endif
2072 && environ[i][len] == '=')
2073 break; /* strnEQ must come first to avoid */
2074 } /* potential SEGV's */
2075 return i;
68dc0745 2076}
2077
a0d0e21e 2078#endif /* !VMS */
378cc40b 2079
16d20bd9 2080#ifdef UNLINK_ALL_VERSIONS
79072805 2081I32
864dbfa3 2082Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2083{
79072805 2084 I32 i;
378cc40b 2085
6ad3d225 2086 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2087 return i ? 0 : -1;
2088}
2089#endif
2090
7a3f2258 2091/* this is a drop-in replacement for bcopy() */
85e6fe83 2092#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2093char *
7a3f2258 2094Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2095{
2096 char *retval = to;
2097
7c0587c8
LW		 2098 if (from - to >= 0) {
2099 while (len--)
2100 *to++ = *from++;
2101 }
2102 else {
2103 to += len;
2104 from += len;
2105 while (len--)
faf8582f 2106 *(--to) = *(--from);
7c0587c8 2107 }
378cc40b
LW		 2108 return retval;
2109}
ffed7fef 2110#endif
378cc40b 2111
7a3f2258 2112/* this is a drop-in replacement for memset() */
fc36a67e 2113#ifndef HAS_MEMSET
2114void *
7a3f2258 2115Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2116{
2117 char *retval = loc;
2118
2119 while (len--)
2120 *loc++ = ch;
2121 return retval;
2122}
2123#endif
2124
7a3f2258 2125/* this is a drop-in replacement for bzero() */
7c0587c8 2126#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2127char *
7a3f2258 2128Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2129{
2130 char *retval = loc;
2131
2132 while (len--)
2133 *loc++ = 0;
2134 return retval;
2135}
2136#endif
7c0587c8 2137
7a3f2258 2138/* this is a drop-in replacement for memcmp() */
36477c24 2139#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2140I32
7a3f2258 2141Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2142{
36477c24 2143 register U8 *a = (U8 *)s1;
2144 register U8 *b = (U8 *)s2;
79072805 2145 register I32 tmp;
7c0587c8
LW		 2146
2147 while (len--) {
36477c24 2148 if (tmp = *a++ - *b++)
7c0587c8
LW		 2149 return tmp;
2150 }
2151 return 0;
2152}
36477c24 2153#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2154
fe14fcc3 2155#ifndef HAS_VPRINTF
a687059c 2156
85e6fe83 2157#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2158char *
2159#else
2160int
2161#endif
08105a92 2162vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2163{
2164 FILE fakebuf;
2165
2166 fakebuf._ptr = dest;
2167 fakebuf._cnt = 32767;
35c8bce7
LW		 2168#ifndef _IOSTRG
2169#define _IOSTRG 0
2170#endif
a687059c
LW		 2171 fakebuf._flag = _IOWRT|_IOSTRG;
2172 _doprnt(pat, args, &fakebuf); /* what a kludge */
2173 (void)putc('\0', &fakebuf);
85e6fe83 2174#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2175 return(dest);
2176#else
2177 return 0; /* perl doesn't use return value */
2178#endif
2179}
2180
fe14fcc3 2181#endif /* HAS_VPRINTF */
a687059c
LW		 2182
2183#ifdef MYSWAP
ffed7fef 2184#if BYTEORDER != 0x4321
a687059c 2185short
864dbfa3 2186Perl_my_swap(pTHX_ short s)
a687059c
LW		 2187{
2188#if (BYTEORDER & 1) == 0
2189 short result;
2190
2191 result = ((s & 255) << 8) + ((s >> 8) & 255);
2192 return result;
2193#else
2194 return s;
2195#endif
2196}
2197
2198long
864dbfa3 2199Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2200{
2201 union {
2202 long result;
ffed7fef 2203 char c[sizeof(long)];
a687059c
LW		 2204 } u;
2205
ffed7fef 2206#if BYTEORDER == 0x1234
a687059c
LW		 2207 u.c[0] = (l >> 24) & 255;
2208 u.c[1] = (l >> 16) & 255;
2209 u.c[2] = (l >> 8) & 255;
2210 u.c[3] = l & 255;
2211 return u.result;
2212#else
ffed7fef 2213#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2214 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2215#else
79072805
LW		 2216 register I32 o;
2217 register I32 s;
a687059c 2218
ffed7fef
LW		 2219 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2220 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2221 }
2222 return u.result;
2223#endif
2224#endif
2225}
2226
2227long
864dbfa3 2228Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2229{
2230 union {
2231 long l;
ffed7fef 2232 char c[sizeof(long)];
a687059c
LW		 2233 } u;
2234
ffed7fef 2235#if BYTEORDER == 0x1234
a687059c
LW		 2236 u.c[0] = (l >> 24) & 255;
2237 u.c[1] = (l >> 16) & 255;
2238 u.c[2] = (l >> 8) & 255;
2239 u.c[3] = l & 255;
2240 return u.l;
2241#else
ffed7fef 2242#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2243 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2244#else
79072805
LW		 2245 register I32 o;
2246 register I32 s;
a687059c
LW		 2247
2248 u.l = l;
2249 l = 0;
ffed7fef
LW		 2250 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2251 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2252 }
2253 return l;
2254#endif
2255#endif
2256}
2257
ffed7fef 2258#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2259#endif /* MYSWAP */
2260
2261/*
2262 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2263 * If these functions are defined,
2264 * the BYTEORDER is neither 0x1234 nor 0x4321.
2265 * However, this is not assumed.
2266 * -DWS
2267 */
2268
2269#define HTOV(name,type) \
2270 type \
ba106d47 2271 name (register type n) \
988174c1
LW		 2272 { \
2273 union { \
2274 type value; \
2275 char c[sizeof(type)]; \
2276 } u; \
79072805
LW		 2277 register I32 i; \
2278 register I32 s; \
988174c1
LW		 2279 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2280 u.c[i] = (n >> s) & 0xFF; \
2281 } \
2282 return u.value; \
2283 }
2284
2285#define VTOH(name,type) \
2286 type \
ba106d47 2287 name (register type n) \
988174c1
LW		 2288 { \
2289 union { \
2290 type value; \
2291 char c[sizeof(type)]; \
2292 } u; \
79072805
LW		 2293 register I32 i; \
2294 register I32 s; \
988174c1
LW		 2295 u.value = n; \
2296 n = 0; \
2297 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2298 n += (u.c[i] & 0xFF) << s; \
2299 } \
2300 return n; \
2301 }
2302
2303#if defined(HAS_HTOVS) && !defined(htovs)
2304HTOV(htovs,short)
2305#endif
2306#if defined(HAS_HTOVL) && !defined(htovl)
2307HTOV(htovl,long)
2308#endif
2309#if defined(HAS_VTOHS) && !defined(vtohs)
2310VTOH(vtohs,short)
2311#endif
2312#if defined(HAS_VTOHL) && !defined(vtohl)
2313VTOH(vtohl,long)
2314#endif
a687059c 2315
5f05dabc 2316 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2317#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2318PerlIO *
864dbfa3 2319Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2320{
2321 int p[2];
8ac85365 2322 register I32 This, that;
d8a83dd3 2323 register Pid_t pid;
79072805 2324 SV *sv;
1738f5c4 2325 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2326 I32 did_pipes = 0;
2327 int pp[2];
a687059c 2328
45bc9206 2329 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2330#ifdef OS2
2331 if (doexec) {
23da6c43 2332 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7
IZ		 2333 }
2334#endif
8ac85365
NIS		 2335 This = (*mode == 'w');
2336 that = !This;
3280af22 2337 if (doexec && PL_tainting) {
bbce6d69 2338 taint_env();
2339 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2340 }
c2267164
IZ		 2341 if (PerlProc_pipe(p) < 0)
2342 return Nullfp;
e446cec8
IZ		 2343 if (doexec && PerlProc_pipe(pp) >= 0)
2344 did_pipes = 1;
a687059c
LW		 2345 while ((pid = (doexec?vfork():fork())) < 0) {
2346 if (errno != EAGAIN) {
6ad3d225 2347 PerlLIO_close(p[This]);
e446cec8
IZ		 2348 if (did_pipes) {
2349 PerlLIO_close(pp[0]);
2350 PerlLIO_close(pp[1]);
2351 }
a687059c 2352 if (!doexec)
cea2e8a9 2353 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2354 return Nullfp;
2355 }
2356 sleep(5);
2357 }
2358 if (pid == 0) {
79072805
LW		 2359 GV* tmpgv;
2360
30ac6d9b
GS		 2361#undef THIS
2362#undef THAT
a687059c 2363#define THIS that
8ac85365 2364#define THAT This
6ad3d225 2365 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2366 if (did_pipes) {
2367 PerlLIO_close(pp[0]);
2368#if defined(HAS_FCNTL) && defined(F_SETFD)
2369 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2370#endif
2371 }
a687059c 2372 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2373 PerlLIO_dup2(p[THIS], *mode == 'r');
2374 PerlLIO_close(p[THIS]);
a687059c 2375 }
4435c477 2376#ifndef OS2
a687059c 2377 if (doexec) {
a0d0e21e 2378#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2379 int fd;
2380
2381#ifndef NOFILE
2382#define NOFILE 20
2383#endif
6b88bc9c 2384 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2385 if (fd != pp[1])
2386 PerlLIO_close(fd);
ae986130 2387#endif
e446cec8 2388 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2389 PerlProc__exit(1);
a687059c 2390 }
4435c477 2391#endif /* defined OS2 */
de3bb511 2392 /*SUPPRESS 560*/
155aba94 2393 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2394 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2395 PL_forkprocess = 0;
2396 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2397 return Nullfp;
2398#undef THIS
2399#undef THAT
2400 }
62b28dd9 2401 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2402 PerlLIO_close(p[that]);
e446cec8
IZ		 2403 if (did_pipes)
2404 PerlLIO_close(pp[1]);
8ac85365 2405 if (p[that] < p[This]) {
6ad3d225
GS		 2406 PerlLIO_dup2(p[This], p[that]);
2407 PerlLIO_close(p[This]);
8ac85365 2408 p[This] = p[that];
62b28dd9 2409 }
4755096e 2410 LOCK_FDPID_MUTEX;
3280af22 2411 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2412 UNLOCK_FDPID_MUTEX;
a0d0e21e 2413 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2414 SvIVX(sv) = pid;
3280af22 2415 PL_forkprocess = pid;
e446cec8
IZ		 2416 if (did_pipes && pid > 0) {
2417 int errkid;
2418 int n = 0, n1;
2419
2420 while (n < sizeof(int)) {
2421 n1 = PerlLIO_read(pp[0],
2422 (void*)(((char*)&errkid)+n),
2423 (sizeof(int)) - n);
2424 if (n1 <= 0)
2425 break;
2426 n += n1;
2427 }
2f96c702
IZ		 2428 PerlLIO_close(pp[0]);
2429 did_pipes = 0;
e446cec8
IZ		 2430 if (n) { /* Error */
2431 if (n != sizeof(int))
cea2e8a9 2432 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2433 errno = errkid; /* Propagate errno from kid */
2434 return Nullfp;
2435 }
2436 }
2437 if (did_pipes)
2438 PerlLIO_close(pp[0]);
8ac85365 2439 return PerlIO_fdopen(p[This], mode);
a687059c 2440}
7c0587c8 2441#else
55497cff 2442#if defined(atarist) || defined(DJGPP)
7c0587c8 2443FILE *popen();
760ac839 2444PerlIO *
864dbfa3 2445Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2446{
760ac839 2447 /* Needs work for PerlIO ! */
55497cff 2448 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2449 PERL_FLUSHALL_FOR_CHILD;
55497cff 2450 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2451}
2452#endif
2453
2454#endif /* !DOSISH */
a687059c 2455
748a9306 2456#ifdef DUMP_FDS
35ff7856 2457void
864dbfa3 2458Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2459{
2460 int fd;
2461 struct stat tmpstatbuf;
2462
bf49b057 2463 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2464 for (fd = 0; fd < 32; fd++) {
6ad3d225 2465 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2466 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2467 }
bf49b057 2468 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2469}
35ff7856 2470#endif /* DUMP_FDS */
ae986130 2471
fe14fcc3 2472#ifndef HAS_DUP2
fec02dd3 2473int
ba106d47 2474dup2(int oldfd, int newfd)
a687059c 2475{
a0d0e21e 2476#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2477 if (oldfd == newfd)
2478 return oldfd;
6ad3d225 2479 PerlLIO_close(newfd);
fec02dd3 2480 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2481#else
fc36a67e 2482#define DUP2_MAX_FDS 256
2483 int fdtmp[DUP2_MAX_FDS];
79072805 2484 I32 fdx = 0;
ae986130
LW		 2485 int fd;
2486
fe14fcc3 2487 if (oldfd == newfd)
fec02dd3 2488 return oldfd;
6ad3d225 2489 PerlLIO_close(newfd);
fc36a67e 2490 /* good enough for low fd's... */
6ad3d225 2491 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2492 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2493 PerlLIO_close(fd);
fc36a67e 2494 fd = -1;
2495 break;
2496 }
ae986130 2497 fdtmp[fdx++] = fd;
fc36a67e 2498 }
ae986130 2499 while (fdx > 0)
6ad3d225 2500 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2501 return fd;
62b28dd9 2502#endif
a687059c
LW		 2503}
2504#endif
2505
64ca3a65 2506#ifndef PERL_MICRO
ff68c719 2507#ifdef HAS_SIGACTION
2508
2509Sighandler_t
864dbfa3 2510Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2511{
2512 struct sigaction act, oact;
2513
2514 act.sa_handler = handler;
2515 sigemptyset(&act.sa_mask);
2516 act.sa_flags = 0;
2517#ifdef SA_RESTART
2518 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2519#endif
85264bed
CS		 2520#ifdef SA_NOCLDWAIT
2521 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2522 act.sa_flags |= SA_NOCLDWAIT;
2523#endif
ff68c719 2524 if (sigaction(signo, &act, &oact) == -1)
36477c24 2525 return SIG_ERR;
ff68c719 2526 else
36477c24 2527 return oact.sa_handler;
ff68c719 2528}
2529
2530Sighandler_t
864dbfa3 2531Perl_rsignal_state(pTHX_ int signo)
ff68c719 2532{
2533 struct sigaction oact;
2534
2535 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2536 return SIG_ERR;
2537 else
2538 return oact.sa_handler;
2539}
2540
2541int
864dbfa3 2542Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2543{
2544 struct sigaction act;
2545
2546 act.sa_handler = handler;
2547 sigemptyset(&act.sa_mask);
2548 act.sa_flags = 0;
2549#ifdef SA_RESTART
2550 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2551#endif
85264bed
CS		 2552#ifdef SA_NOCLDWAIT
2553 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2554 act.sa_flags |= SA_NOCLDWAIT;
2555#endif
ff68c719 2556 return sigaction(signo, &act, save);
2557}
2558
2559int
864dbfa3 2560Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2561{
2562 return sigaction(signo, save, (struct sigaction *)NULL);
2563}
2564
2565#else /* !HAS_SIGACTION */
2566
2567Sighandler_t
864dbfa3 2568Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2569{
6ad3d225 2570 return PerlProc_signal(signo, handler);
ff68c719 2571}
2572
2573static int sig_trapped;
2574
2575static
2576Signal_t
4e35701f 2577sig_trap(int signo)
ff68c719 2578{
2579 sig_trapped++;
2580}
2581
2582Sighandler_t
864dbfa3 2583Perl_rsignal_state(pTHX_ int signo)
ff68c719 2584{
2585 Sighandler_t oldsig;
2586
2587 sig_trapped = 0;
6ad3d225
GS		 2588 oldsig = PerlProc_signal(signo, sig_trap);
2589 PerlProc_signal(signo, oldsig);
ff68c719 2590 if (sig_trapped)
7766f137 2591 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2592 return oldsig;
2593}
2594
2595int
864dbfa3 2596Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2597{
6ad3d225 2598 *save = PerlProc_signal(signo, handler);
ff68c719 2599 return (*save == SIG_ERR) ? -1 : 0;
2600}
2601
2602int
864dbfa3 2603Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2604{
6ad3d225 2605 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2606}
2607
2608#endif /* !HAS_SIGACTION */
64ca3a65 2609#endif /* !PERL_MICRO */
ff68c719 2610
5f05dabc 2611 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2612#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2613I32
864dbfa3 2614Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2615{
ff68c719 2616 Sigsave_t hstat, istat, qstat;
a687059c 2617 int status;
a0d0e21e 2618 SV **svp;
d8a83dd3
JH		 2619 Pid_t pid;
2620 Pid_t pid2;
03136e13
CS		 2621 bool close_failed;
2622 int saved_errno;
2623#ifdef VMS
2624 int saved_vaxc_errno;
2625#endif
22fae026
TM		 2626#ifdef WIN32
2627 int saved_win32_errno;
2628#endif
a687059c 2629
4755096e 2630 LOCK_FDPID_MUTEX;
3280af22 2631 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2632 UNLOCK_FDPID_MUTEX;
d8a83dd3 2633 pid = SvIVX(*svp);
a0d0e21e 2634 SvREFCNT_dec(*svp);
3280af22 2635 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2636#ifdef OS2
2637 if (pid == -1) { /* Opened by popen. */
2638 return my_syspclose(ptr);
2639 }
2640#endif
03136e13
CS		 2641 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2642 saved_errno = errno;
2643#ifdef VMS
2644 saved_vaxc_errno = vaxc$errno;
2645#endif
22fae026
TM		 2646#ifdef WIN32
2647 saved_win32_errno = GetLastError();
2648#endif
03136e13 2649 }
7c0587c8 2650#ifdef UTS
6ad3d225 2651 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2652#endif
64ca3a65 2653#ifndef PERL_MICRO
ff68c719 2654 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2655 rsignal_save(SIGINT, SIG_IGN, &istat);
2656 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2657#endif
748a9306 2658 do {
1d3434b8
GS		 2659 pid2 = wait4pid(pid, &status, 0);
2660 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2661#ifndef PERL_MICRO
ff68c719 2662 rsignal_restore(SIGHUP, &hstat);
2663 rsignal_restore(SIGINT, &istat);
2664 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2665#endif
03136e13
CS		 2666 if (close_failed) {
2667 SETERRNO(saved_errno, saved_vaxc_errno);
2668 return -1;
2669 }
1d3434b8 2670 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2671}
4633a7c4
LW		 2672#endif /* !DOSISH */
2673
cd39f2b6 2674#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2675I32
d8a83dd3 2676Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2677{
79072805
LW		 2678 SV *sv;
2679 SV** svp;
fc36a67e 2680 char spid[TYPE_CHARS(int)];
20188a90
LW		 2681
2682 if (!pid)
2683 return -1;
68a29c53 2684#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2685 if (pid > 0) {
7b0972df 2686 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2687 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2688 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2689 *statusp = SvIVX(*svp);
3280af22 2690 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2691 return pid;
2692 }
2693 }
2694 else {
79072805 2695 HE *entry;
20188a90 2696
3280af22 2697 hv_iterinit(PL_pidstatus);
155aba94 2698 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2699 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2700 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2701 *statusp = SvIVX(sv);
7b0972df 2702 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2703 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2704 return pid;
2705 }
2706 }
68a29c53 2707#endif
79072805 2708#ifdef HAS_WAITPID
367f3c24
IZ		 2709# ifdef HAS_WAITPID_RUNTIME
2710 if (!HAS_WAITPID_RUNTIME)
2711 goto hard_way;
2712# endif
f55ee38a 2713 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2714#endif
2715#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2716 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2717#endif
2718#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2719 hard_way:
a0d0e21e
LW		 2720 {
2721 I32 result;
2722 if (flags)
cea2e8a9 2723 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2724 else {
76e3520e 2725 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2726 pidgone(result,*statusp);
2727 if (result < 0)
2728 *statusp = -1;
2729 }
2730 return result;
a687059c
LW		 2731 }
2732#endif
a687059c 2733}
2d7a9237 2734#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2735
7c0587c8 2736void
de3bb511 2737/*SUPPRESS 590*/
d8a83dd3 2738Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2739{
79072805 2740 register SV *sv;
fc36a67e 2741 char spid[TYPE_CHARS(int)];
a687059c 2742
7b0972df 2743 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2744 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2745 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2746 SvIVX(sv) = status;
20188a90 2747 return;
a687059c
LW		 2748}
2749
55497cff 2750#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2751int pclose();
ddcf38b7
IZ		 2752#ifdef HAS_FORK
2753int /* Cannot prototype with I32
2754 in os2ish.h. */
ba106d47 2755my_syspclose(PerlIO *ptr)
ddcf38b7 2756#else
79072805 2757I32
864dbfa3 2758Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2759#endif
a687059c 2760{
760ac839
LW		 2761 /* Needs work for PerlIO ! */
2762 FILE *f = PerlIO_findFILE(ptr);
2763 I32 result = pclose(f);
933fea7f
GS		 2764#if defined(DJGPP)
2765 result = (result << 8) & 0xff00;
2766#endif
760ac839
LW		 2767 PerlIO_releaseFILE(ptr,f);
2768 return result;
a687059c 2769}
7c0587c8 2770#endif
9f68db38
LW		 2771
2772void
864dbfa3 2773Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2774{
79072805 2775 register I32 todo;
08105a92 2776 register const char *frombase = from;
9f68db38
LW		 2777
2778 if (len == 1) {
08105a92 2779 register const char c = *from;
9f68db38 2780 while (count-- > 0)
5926133d 2781 *to++ = c;
9f68db38
LW		 2782 return;
2783 }
2784 while (count-- > 0) {
2785 for (todo = len; todo > 0; todo--) {
2786 *to++ = *from++;
2787 }
2788 from = frombase;
2789 }
2790}
0f85fab0 2791
463ee0b2 2792U32
65202027 2793Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2794{
2795 long along;
2796
27e2fb84 2797#if CASTFLAGS & 2
34de22dd
LW		 2798# define BIGDOUBLE 2147483648.0
2799 if (f >= BIGDOUBLE)
2800 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2801#endif
0f85fab0
LW		 2802 if (f >= 0.0)
2803 return (unsigned long)f;
2804 along = (long)f;
2805 return (unsigned long)along;
2806}
ed6116ce 2807# undef BIGDOUBLE
5d94fbed 2808
5d94fbed
AD		 2809/* Unfortunately, on some systems the cast_uv() function doesn't
2810 work with the system-supplied definition of ULONG_MAX. The
2811 comparison (f >= ULONG_MAX) always comes out true. It must be a
2812 problem with the compiler constant folding.
2813
2814 In any case, this workaround should be fine on any two's complement
2815 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2816 ccflags.
2817 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2818*/
1eb770ff 2819
2820/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2821 of LONG_(MIN/MAX).
2822 -- Kenneth Albanowski <kjahds@kjahds.com>
2823*/
2824
20cec16a 2825#ifndef MY_UV_MAX
2826# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2827#endif
2828
ed6116ce 2829I32
65202027 2830Perl_cast_i32(pTHX_ NV f)
ed6116ce 2831{
20cec16a 2832 if (f >= I32_MAX)
2833 return (I32) I32_MAX;
2834 if (f <= I32_MIN)
2835 return (I32) I32_MIN;
ed6116ce
LW		 2836 return (I32) f;
2837}
a0d0e21e
LW		 2838
2839IV
65202027 2840Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2841{
25da4f38
IZ		 2842 if (f >= IV_MAX) {
2843 UV uv;
2844
65202027 2845 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2846 return (IV) UV_MAX;
2847 uv = (UV) f;
2848 return (IV)uv;
2849 }
20cec16a 2850 if (f <= IV_MIN)
2851 return (IV) IV_MIN;
a0d0e21e
LW		 2852 return (IV) f;
2853}
5d94fbed
AD		 2854
2855UV
65202027 2856Perl_cast_uv(pTHX_ NV f)
5d94fbed 2857{
20cec16a 2858 if (f >= MY_UV_MAX)
2859 return (UV) MY_UV_MAX;
25da4f38
IZ		 2860 if (f < 0) {
2861 IV iv;
2862
2863 if (f < IV_MIN)
2864 return (UV)IV_MIN;
2865 iv = (IV) f;
2866 return (UV) iv;
2867 }
5d94fbed
AD		 2868 return (UV) f;
2869}
2870
fe14fcc3 2871#ifndef HAS_RENAME
79072805 2872I32
864dbfa3 2873Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2874{
93a17b20
LW		 2875 char *fa = strrchr(a,'/');
2876 char *fb = strrchr(b,'/');
62b28dd9
LW		 2877 struct stat tmpstatbuf1;
2878 struct stat tmpstatbuf2;
46fc3d4c 2879 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2880
2881 if (fa)
2882 fa++;
2883 else
2884 fa = a;
2885 if (fb)
2886 fb++;
2887 else
2888 fb = b;
2889 if (strNE(a,b))
2890 return FALSE;
2891 if (fa == a)
46fc3d4c 2892 sv_setpv(tmpsv, ".");
62b28dd9 2893 else
46fc3d4c 2894 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2895 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2896 return FALSE;
2897 if (fb == b)
46fc3d4c 2898 sv_setpv(tmpsv, ".");
62b28dd9 2899 else
46fc3d4c 2900 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2901 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2902 return FALSE;
2903 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2904 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2905}
fe14fcc3
LW		 2906#endif /* !HAS_RENAME */
2907
9e24b6e2 2908NV
864dbfa3 2909Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2910{
2911 register char *s = start;
9e24b6e2
JH		 2912 register NV rnv = 0.0;
2913 register UV ruv = 0;
252aa082 2914 register bool seenb = FALSE;
9e24b6e2 2915 register bool overflowed = FALSE;
252aa082
JH		 2916
2917 for (; len-- && *s; s++) {
2918 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2919 if (*s == '_' && len && *retlen
2920 && (s[1] == '0' || s[1] == '1'))
2921 {
2922 --len;
2923 ++s;
2924 }
2925 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2926 /* Disallow 0bbb0b0bbb... */
2927 seenb = TRUE;
252aa082
JH		 2928 continue;
2929 }
2930 else {
2931 dTHR;
627300f0
JH		 2932 if (ckWARN(WARN_DIGIT))
2933 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2934 "Illegal binary digit '%c' ignored", *s);
2935 break;
2936 }
9e24b6e2
JH		 2937 }
2938 if (!overflowed) {
2939 register UV xuv = ruv << 1;
2940
2941 if ((xuv >> 1) != ruv) {
2942 dTHR;
2943 overflowed = TRUE;
2944 rnv = (NV) ruv;
627300f0
JH		 2945 if (ckWARN_d(WARN_OVERFLOW))
2946 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2947 "Integer overflow in binary number");
b21ed0a9
GS		 2948 }
2949 else
9e24b6e2
JH		 2950 ruv = xuv | (*s - '0');
2951 }
2952 if (overflowed) {
2953 rnv *= 2;
2954 /* If an NV has not enough bits in its mantissa to
2955 * represent an UV this summing of small low-order numbers
2956 * is a waste of time (because the NV cannot preserve
2957 * the low-order bits anyway): we could just remember when
2958 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2959 * right amount. */
9e24b6e2 2960 rnv += (*s - '0');
f248d071 2961 }
4f19785b 2962 }
9e24b6e2
JH		 2963 if (!overflowed)
2964 rnv = (NV) ruv;
893fe2c2 2965 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2966#if UVSIZE > 4
893fe2c2
JH		 2967 || (!overflowed && ruv > 0xffffffff )
2968#endif
2969 ) {
252aa082 2970 dTHR;
627300f0
JH		 2971 if (ckWARN(WARN_PORTABLE))
2972 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2973 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2974 }
2975 *retlen = s - start;
9e24b6e2 2976 return rnv;
4f19785b 2977}
9e24b6e2
JH		 2978
2979NV
864dbfa3 2980Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2981{
2982 register char *s = start;
9e24b6e2
JH		 2983 register NV rnv = 0.0;
2984 register UV ruv = 0;
2985 register bool overflowed = FALSE;
252aa082
JH		 2986
2987 for (; len-- && *s; s++) {
2988 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 2989 if (*s == '_' && len && *retlen
2990 && (s[1] >= '0' && s[1] <= '7'))
2991 {
2992 --len;
2993 ++s;
2994 }
252aa082 2995 else {
f84f607d
JH		 2996 /* Allow \octal to work the DWIM way (that is, stop scanning
2997 * as soon as non-octal characters are seen, complain only iff
2998 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2999 if (*s == '8' || *s == '9') {
3000 dTHR;
627300f0
JH		 3001 if (ckWARN(WARN_DIGIT))
3002 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 3003 "Illegal octal digit '%c' ignored", *s);
3004 }
3005 break;
3006 }
55497cff 3007 }
9e24b6e2 3008 if (!overflowed) {
893fe2c2 3009 register UV xuv = ruv << 3;
9e24b6e2
JH		 3010
3011 if ((xuv >> 3) != ruv) {
3012 dTHR;
3013 overflowed = TRUE;
3014 rnv = (NV) ruv;
627300f0
JH		 3015 if (ckWARN_d(WARN_OVERFLOW))
3016 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3017 "Integer overflow in octal number");
b21ed0a9
GS		 3018 }
3019 else
9e24b6e2
JH		 3020 ruv = xuv | (*s - '0');
3021 }
3022 if (overflowed) {
3023 rnv *= 8.0;
3024 /* If an NV has not enough bits in its mantissa to
3025 * represent an UV this summing of small low-order numbers
3026 * is a waste of time (because the NV cannot preserve
3027 * the low-order bits anyway): we could just remember when
3028 * did we overflow and in the end just multiply rnv by the
3029 * right amount of 8-tuples. */
3030 rnv += (NV)(*s - '0');
3031 }
fe14fcc3 3032 }
9e24b6e2
JH		 3033 if (!overflowed)
3034 rnv = (NV) ruv;
893fe2c2 3035 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3036#if UVSIZE > 4
893fe2c2
JH		 3037 || (!overflowed && ruv > 0xffffffff )
3038#endif
3039 ) {
d008e5eb 3040 dTHR;
627300f0
JH		 3041 if (ckWARN(WARN_PORTABLE))
3042 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3043 "Octal number > 037777777777 non-portable");
d008e5eb 3044 }
fe14fcc3 3045 *retlen = s - start;
9e24b6e2 3046 return rnv;
fe14fcc3
LW		 3047}
3048
9e24b6e2 3049NV
864dbfa3 3050Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3051{
3052 register char *s = start;
9e24b6e2
JH		 3053 register NV rnv = 0.0;
3054 register UV ruv = 0;
252aa082 3055 register bool seenx = FALSE;
9e24b6e2 3056 register bool overflowed = FALSE;
9e24b6e2 3057 char *hexdigit;
fe14fcc3 3058
9e24b6e2
JH		 3059 for (; len-- && *s; s++) {
3060 hexdigit = strchr((char *) PL_hexdigit, *s);
3061 if (!hexdigit) {
b21ed0a9
GS		 3062 if (*s == '_' && len && *retlen && s[1]
3063 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3064 {
3065 --len;
3066 ++s;
3067 }
3068 else if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3069 /* Disallow 0xxx0x0xxx... */
3070 seenx = TRUE;
252aa082
JH		 3071 continue;
3072 }
a0ed51b3 3073 else {
d008e5eb 3074 dTHR;
627300f0
JH		 3075 if (ckWARN(WARN_DIGIT))
3076 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3077 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3078 break;
3079 }
3080 }
9e24b6e2
JH		 3081 if (!overflowed) {
3082 register UV xuv = ruv << 4;
3083
3084 if ((xuv >> 4) != ruv) {
3085 dTHR;
3086 overflowed = TRUE;
3087 rnv = (NV) ruv;
627300f0
JH		 3088 if (ckWARN_d(WARN_OVERFLOW))
3089 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3090 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3091 }
3092 else
9e24b6e2
JH		 3093 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3094 }
3095 if (overflowed) {
3096 rnv *= 16.0;
3097 /* If an NV has not enough bits in its mantissa to
3098 * represent an UV this summing of small low-order numbers
3099 * is a waste of time (because the NV cannot preserve
3100 * the low-order bits anyway): we could just remember when
3101 * did we overflow and in the end just multiply rnv by the
3102 * right amount of 16-tuples. */
3103 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3104 }
6ff81951 3105 }
9e24b6e2
JH		 3106 if (!overflowed)
3107 rnv = (NV) ruv;
893fe2c2 3108 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3109#if UVSIZE > 4
893fe2c2
JH		 3110 || (!overflowed && ruv > 0xffffffff )
3111#endif
3112 ) {
252aa082 3113 dTHR;
627300f0
JH		 3114 if (ckWARN(WARN_PORTABLE))
3115 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3116 "Hexadecimal number > 0xffffffff non-portable");
3117 }
fe14fcc3 3118 *retlen = s - start;
9e24b6e2 3119 return rnv;
fe14fcc3 3120}
760ac839 3121
491527d0 3122char*
864dbfa3 3123Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3124{
3125 dTHR;
3126 char *xfound = Nullch;
3127 char *xfailed = Nullch;
0f31cffe 3128 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3129 register char *s;
3130 I32 len;
3131 int retval;
3132#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3133# define SEARCH_EXTS ".bat", ".cmd", NULL
3134# define MAX_EXT_LEN 4
3135#endif
3136#ifdef OS2
3137# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3138# define MAX_EXT_LEN 4
3139#endif
3140#ifdef VMS
3141# define SEARCH_EXTS ".pl", ".com", NULL
3142# define MAX_EXT_LEN 4
3143#endif
3144 /* additional extensions to try in each dir if scriptname not found */
3145#ifdef SEARCH_EXTS
3146 char *exts[] = { SEARCH_EXTS };
3147 char **ext = search_ext ? search_ext : exts;
3148 int extidx = 0, i = 0;
3149 char *curext = Nullch;
3150#else
3151# define MAX_EXT_LEN 0
3152#endif
3153
3154 /*
3155 * If dosearch is true and if scriptname does not contain path
3156 * delimiters, search the PATH for scriptname.
3157 *
3158 * If SEARCH_EXTS is also defined, will look for each
3159 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3160 * while searching the PATH.
3161 *
3162 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3163 * proceeds as follows:
3164 * If DOSISH or VMSISH:
3165 * + look for ./scriptname{,.foo,.bar}
3166 * + search the PATH for scriptname{,.foo,.bar}
3167 *
3168 * If !DOSISH:
3169 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3170 * this will not look in '.' if it's not in the PATH)
3171 */
84486fc6 3172 tmpbuf[0] = '\0';
491527d0
GS		 3173
3174#ifdef VMS
3175# ifdef ALWAYS_DEFTYPES
3176 len = strlen(scriptname);
3177 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3178 int hasdir, idx = 0, deftypes = 1;
3179 bool seen_dot = 1;
3180
3181 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3182# else
3183 if (dosearch) {
3184 int hasdir, idx = 0, deftypes = 1;
3185 bool seen_dot = 1;
3186
3187 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3188# endif
3189 /* The first time through, just add SEARCH_EXTS to whatever we
3190 * already have, so we can check for default file types. */
3191 while (deftypes ||
84486fc6 3192 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3193 {
3194 if (deftypes) {
3195 deftypes = 0;
84486fc6 3196 *tmpbuf = '\0';
491527d0 3197 }
84486fc6
GS		 3198 if ((strlen(tmpbuf) + strlen(scriptname)
3199 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3200 continue; /* don't search dir with too-long name */
84486fc6 3201 strcat(tmpbuf, scriptname);
491527d0
GS		 3202#else /* !VMS */
3203
3204#ifdef DOSISH
3205 if (strEQ(scriptname, "-"))
3206 dosearch = 0;
3207 if (dosearch) { /* Look in '.' first. */
3208 char *cur = scriptname;
3209#ifdef SEARCH_EXTS
3210 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3211 while (ext[i])
3212 if (strEQ(ext[i++],curext)) {
3213 extidx = -1; /* already has an ext */
3214 break;
3215 }
3216 do {
3217#endif
3218 DEBUG_p(PerlIO_printf(Perl_debug_log,
3219 "Looking for %s\n",cur));
017f25f1
IZ		 3220 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3221 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3222 dosearch = 0;
3223 scriptname = cur;
3224#ifdef SEARCH_EXTS
3225 break;
3226#endif
3227 }
3228#ifdef SEARCH_EXTS
3229 if (cur == scriptname) {
3230 len = strlen(scriptname);
84486fc6 3231 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3232 break;
84486fc6 3233 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3234 }
3235 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3236 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3237#endif
3238 }
3239#endif
3240
cd39f2b6
JH		 3241#ifdef MACOS_TRADITIONAL
3242 if (dosearch && !strchr(scriptname, ':') &&
3243 (s = PerlEnv_getenv("Commands")))
3244#else
491527d0
GS		 3245 if (dosearch && !strchr(scriptname, '/')
3246#ifdef DOSISH
3247 && !strchr(scriptname, '\\')
3248#endif
cd39f2b6
JH		 3249 && (s = PerlEnv_getenv("PATH")))
3250#endif
3251 {
491527d0
GS		 3252 bool seen_dot = 0;
3253
3280af22
NIS		 3254 PL_bufend = s + strlen(s);
3255 while (s < PL_bufend) {
cd39f2b6
JH		 3256#ifdef MACOS_TRADITIONAL
3257 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3258 ',',
3259 &len);
3260#else
491527d0
GS		 3261#if defined(atarist) || defined(DOSISH)
3262 for (len = 0; *s
3263# ifdef atarist
3264 && *s != ','
3265# endif
3266 && *s != ';'; len++, s++) {
84486fc6
GS		 3267 if (len < sizeof tmpbuf)
3268 tmpbuf[len] = *s;
491527d0 3269 }
84486fc6
GS		 3270 if (len < sizeof tmpbuf)
3271 tmpbuf[len] = '\0';
491527d0 3272#else /* ! (atarist || DOSISH) */
3280af22 3273 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3274 ':',
3275 &len);
3276#endif /* ! (atarist || DOSISH) */
cd39f2b6 3277#endif /* MACOS_TRADITIONAL */
3280af22 3278 if (s < PL_bufend)
491527d0 3279 s++;
84486fc6 3280 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3281 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3282#ifdef MACOS_TRADITIONAL
3283 if (len && tmpbuf[len - 1] != ':')
3284 tmpbuf[len++] = ':';
3285#else
491527d0 3286 if (len
61ae2fbf 3287#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3288 && tmpbuf[len - 1] != '/'
3289 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3290#endif
3291 )
84486fc6
GS		 3292 tmpbuf[len++] = '/';
3293 if (len == 2 && tmpbuf[0] == '.')
491527d0 3294 seen_dot = 1;
cd39f2b6 3295#endif
84486fc6 3296 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3297#endif /* !VMS */
3298
3299#ifdef SEARCH_EXTS
84486fc6 3300 len = strlen(tmpbuf);
491527d0
GS		 3301 if (extidx > 0) /* reset after previous loop */
3302 extidx = 0;
3303 do {
3304#endif
84486fc6 3305 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3306 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3307 if (S_ISDIR(PL_statbuf.st_mode)) {
3308 retval = -1;
3309 }
491527d0
GS		 3310#ifdef SEARCH_EXTS
3311 } while ( retval < 0 /* not there */
3312 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3313 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3314 );
3315#endif
3316 if (retval < 0)
3317 continue;
3280af22
NIS		 3318 if (S_ISREG(PL_statbuf.st_mode)
3319 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3320#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3321 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3322#endif
3323 )
3324 {
84486fc6 3325 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3326 break;
3327 }
3328 if (!xfailed)
84486fc6 3329 xfailed = savepv(tmpbuf);
491527d0
GS		 3330 }
3331#ifndef DOSISH
017f25f1
IZ		 3332 if (!xfound && !seen_dot && !xfailed &&
3333 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3334 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3335#endif
3336 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3337 if (!xfound) {
3338 if (flags & 1) { /* do or die? */
cea2e8a9 3339 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3340 (xfailed ? "execute" : "find"),
3341 (xfailed ? xfailed : scriptname),
3342 (xfailed ? "" : " on PATH"),
3343 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3344 }
3345 scriptname = Nullch;
3346 }
491527d0
GS		 3347 if (xfailed)
3348 Safefree(xfailed);
3349 scriptname = xfound;
3350 }
9ccb31f9 3351 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3352}
3353
ba869deb
GS		 3354#ifndef PERL_GET_CONTEXT_DEFINED
3355
3356void *
3357Perl_get_context(void)
3358{
3359#if defined(USE_THREADS) || defined(USE_ITHREADS)
3360# ifdef OLD_PTHREADS_API
3361 pthread_addr_t t;
3362 if (pthread_getspecific(PL_thr_key, &t))
3363 Perl_croak_nocontext("panic: pthread_getspecific");
3364 return (void*)t;
3365# else
c44d3fdb
GS		 3366# ifdef I_MACH_CTHREADS
3367 return (void*)cthread_data(cthread_self());
3368# else
ba869deb
GS		 3369 return (void*)pthread_getspecific(PL_thr_key);
3370# endif
c44d3fdb 3371# endif
ba869deb
GS		 3372#else
3373 return (void*)NULL;
3374#endif
3375}
3376
3377void
3378Perl_set_context(void *t)
3379{
3380#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3381# ifdef I_MACH_CTHREADS
3382 cthread_set_data(cthread_self(), t);
3383# else
ba869deb
GS		 3384 if (pthread_setspecific(PL_thr_key, t))
3385 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3386# endif
ba869deb
GS		 3387#endif
3388}
3389
3390#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3391
11343788 3392#ifdef USE_THREADS
ba869deb 3393
12ca11f6
MB		 3394#ifdef FAKE_THREADS
3395/* Very simplistic scheduler for now */
3396void
3397schedule(void)
3398{
c7848ba1 3399 thr = thr->i.next_run;
12ca11f6
MB		 3400}
3401
3402void
864dbfa3 3403Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3404{
3405 *cp = 0;
3406}
3407
3408void
864dbfa3 3409Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3410{
51dd5992 3411 perl_os_thread t;
12ca11f6
MB		 3412 perl_cond cond = *cp;
3413
3414 if (!cond)
3415 return;
3416 t = cond->thread;
3417 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3418 t->i.next_run = thr->i.next_run;
3419 thr->i.next_run->i.prev_run = t;
3420 t->i.prev_run = thr;
3421 thr->i.next_run = t;
3422 thr->i.wait_queue = 0;
12ca11f6
MB		 3423 /* Remove from the wait queue */
3424 *cp = cond->next;
3425 Safefree(cond);
3426}
3427
3428void
864dbfa3 3429Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3430{
51dd5992 3431 perl_os_thread t;
12ca11f6
MB		 3432 perl_cond cond, cond_next;
3433
3434 for (cond = *cp; cond; cond = cond_next) {
3435 t = cond->thread;
3436 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3437 t->i.next_run = thr->i.next_run;
3438 thr->i.next_run->i.prev_run = t;
3439 t->i.prev_run = thr;
3440 thr->i.next_run = t;
3441 thr->i.wait_queue = 0;
12ca11f6
MB		 3442 /* Remove from the wait queue */
3443 cond_next = cond->next;
3444 Safefree(cond);
3445 }
3446 *cp = 0;
3447}
3448
3449void
864dbfa3 3450Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3451{
3452 perl_cond cond;
3453
c7848ba1 3454 if (thr->i.next_run == thr)
cea2e8a9 3455 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3456
0f15f207 3457 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3458 cond->thread = thr;
3459 cond->next = *cp;
3460 *cp = cond;
c7848ba1 3461 thr->i.wait_queue = cond;
12ca11f6 3462 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3463 thr->i.next_run->i.prev_run = thr->i.prev_run;
3464 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3465}
3466#endif /* FAKE_THREADS */
3467
f93b4edd 3468MAGIC *
864dbfa3 3469Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3470{
3471 MAGIC *mg;
3472
3473 SvUPGRADE(sv, SVt_PVMG);
3474 mg = mg_find(sv, 'm');
3475 if (!mg) {
3476 condpair_t *cp;
3477
3478 New(53, cp, 1, condpair_t);
3479 MUTEX_INIT(&cp->mutex);
3480 COND_INIT(&cp->owner_cond);
3481 COND_INIT(&cp->cond);
3482 cp->owner = 0;
1feb2720 3483 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3484 mg = mg_find(sv, 'm');
3485 if (mg) {
3486 /* someone else beat us to initialising it */
1feb2720 3487 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3488 MUTEX_DESTROY(&cp->mutex);
3489 COND_DESTROY(&cp->owner_cond);
3490 COND_DESTROY(&cp->cond);
3491 Safefree(cp);
3492 }
3493 else {
3494 sv_magic(sv, Nullsv, 'm', 0, 0);
3495 mg = SvMAGIC(sv);
3496 mg->mg_ptr = (char *)cp;
565764a8 3497 mg->mg_len = sizeof(cp);
1feb2720 3498 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3499 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3500 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3501 }
3502 }
3503 return mg;
3504}
a863c7d1 3505
3d35f11b 3506SV *
4755096e 3507Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS		 3508{
3509 MAGIC *mg;
3510 SV *sv = osv;
3511
631cfb58 3512 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS		 3513 if (SvROK(sv)) {
3514 sv = SvRV(sv);
3d35f11b
GS		 3515 }
3516
3517 mg = condpair_magic(sv);
3518 MUTEX_LOCK(MgMUTEXP(mg));
3519 if (MgOWNER(mg) == thr)
3520 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3521 else {
3d35f11b
GS		 3522 while (MgOWNER(mg))
3523 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3524 MgOWNER(mg) = thr;
4755096e
GS		 3525 DEBUG_S(PerlIO_printf(Perl_debug_log,
3526 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS		 3527 PTR2UV(thr), PTR2UV(sv));)
3528 MUTEX_UNLOCK(MgMUTEXP(mg));
3529 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3530 }
631cfb58 3531 UNLOCK_SV_LOCK_MUTEX;
4755096e 3532 return sv;
3d35f11b
GS		 3533}
3534
a863c7d1 3535/*
199100c8
MB		 3536 * Make a new perl thread structure using t as a prototype. Some of the
3537 * fields for the new thread are copied from the prototype thread, t,
3538 * so t should not be running in perl at the time this function is
3539 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3540 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3541 */
52e1cb5e 3542struct perl_thread *
864dbfa3 3543Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3544{
c5be433b 3545#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3546 struct perl_thread *thr;
cea2e8a9 3547#endif
a863c7d1 3548 SV *sv;
199100c8
MB		 3549 SV **svp;
3550 I32 i;
3551
79cb57f6 3552 sv = newSVpvn("", 0);
52e1cb5e
JH		 3553 SvGROW(sv, sizeof(struct perl_thread) + 1);
3554 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3555 thr = (Thread) SvPVX(sv);
949ced2d 3556#ifdef DEBUGGING
52e1cb5e 3557 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3558 PL_markstack = 0;
3559 PL_scopestack = 0;
3560 PL_savestack = 0;
3561 PL_retstack = 0;
3562 PL_dirty = 0;
3563 PL_localizing = 0;
949ced2d
GS		 3564 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3565#else
3566 Zero(thr, 1, struct perl_thread);
3567#endif
199100c8
MB		 3568
3569 thr->oursv = sv;
cea2e8a9 3570 init_stacks();
a863c7d1 3571
533c011a 3572 PL_curcop = &PL_compiling;
c5be433b 3573 thr->interp = t->interp;
199100c8 3574 thr->cvcache = newHV();
54b9620d 3575 thr->threadsv = newAV();
a863c7d1 3576 thr->specific = newAV();
79cb57f6 3577 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3578 thr->flags = THRf_R_JOINABLE;
3579 MUTEX_INIT(&thr->mutex);
199100c8 3580
5c831c24 3581 JMPENV_BOOTSTRAP;
533c011a 3582
faef0170 3583 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3584 PL_restartop = 0;
3585
b099ddc0 3586 PL_statname = NEWSV(66,0);
5a844595 3587 PL_errors = newSVpvn("", 0);
b099ddc0 3588 PL_maxscream = -1;
0b94c7bb
GS		 3589 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3590 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3591 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3592 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3593 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3594 PL_regindent = 0;
3595 PL_reginterp_cnt = 0;
3596 PL_lastscream = Nullsv;
3597 PL_screamfirst = 0;
3598 PL_screamnext = 0;
3599 PL_reg_start_tmp = 0;
3600 PL_reg_start_tmpl = 0;
14ed4b74 3601 PL_reg_poscache = Nullch;
b099ddc0
GS		 3602
3603 /* parent thread's data needs to be locked while we make copy */
3604 MUTEX_LOCK(&t->mutex);
3605
14dd3ad8 3606#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3607 PL_protect = t->Tprotect;
14dd3ad8 3608#endif
312caa8e 3609
b099ddc0
GS		 3610 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3611 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3612 PL_curstash = t->Tcurstash; /* always be set to main? */
3613
6b88bc9c 3614 PL_tainted = t->Ttainted;
84fee439
NIS		 3615 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3616 PL_nrs = newSVsv(t->Tnrs);
3617 PL_rs = SvREFCNT_inc(PL_nrs);
3618 PL_last_in_gv = Nullgv;
3619 PL_ofslen = t->Tofslen;
3620 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3621 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3622 PL_chopset = t->Tchopset;
84fee439
NIS		 3623 PL_bodytarget = newSVsv(t->Tbodytarget);
3624 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3625 if (t->Tformtarget == t->Ttoptarget)
3626 PL_formtarget = PL_toptarget;
3627 else
3628 PL_formtarget = PL_bodytarget;
533c011a 3629
54b9620d
MB		 3630 /* Initialise all per-thread SVs that the template thread used */
3631 svp = AvARRAY(t->threadsv);
93965878 3632 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3633 if (*svp && *svp != &PL_sv_undef) {
199100c8 3634 SV *sv = newSVsv(*svp);
54b9620d 3635 av_store(thr->threadsv, i, sv);
533c011a 3636 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3637 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3638 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3639 (IV)i, t, thr));
199100c8
MB		 3640 }
3641 }
940cb80d 3642 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3643
533c011a
NIS		 3644 MUTEX_LOCK(&PL_threads_mutex);
3645 PL_nthreads++;
3646 thr->tid = ++PL_threadnum;
199100c8
MB		 3647 thr->next = t->next;
3648 thr->prev = t;
3649 t->next = thr;
3650 thr->next->prev = thr;
533c011a 3651 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3652
b099ddc0
GS		 3653 /* done copying parent's state */
3654 MUTEX_UNLOCK(&t->mutex);
3655
a863c7d1 3656#ifdef HAVE_THREAD_INTERN
4f63d024 3657 Perl_init_thread_intern(thr);
a863c7d1 3658#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3659 return thr;
3660}
11343788 3661#endif /* USE_THREADS */
760ac839 3662
4d46a988 3663#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3664/*
3665 * This hack is to force load of "huge" support from libm.a
3666 * So it is in perl for (say) POSIX to use.
3667 * Needed for SunOS with Sun's 'acc' for example.
3668 */
65202027 3669NV
8ac85365 3670Perl_huge(void)
760ac839 3671{
4d46a988
JH		 3672# if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3673 return HUGE_VALL;
3674# endif
3675 return HUGE_VAL;
760ac839
LW		 3676}
3677#endif
4e35701f 3678
22239a37
NIS		 3679#ifdef PERL_GLOBAL_STRUCT
3680struct perl_vars *
864dbfa3 3681Perl_GetVars(pTHX)
22239a37 3682{
533c011a 3683 return &PL_Vars;
22239a37 3684}
31fb1209
NIS		 3685#endif
3686
3687char **
864dbfa3 3688Perl_get_op_names(pTHX)
31fb1209 3689{
22c35a8c 3690 return PL_op_name;
31fb1209
NIS		 3691}
3692
3693char **
864dbfa3 3694Perl_get_op_descs(pTHX)
31fb1209 3695{
22c35a8c 3696 return PL_op_desc;
31fb1209 3697}
9e6b2b00
GS		 3698
3699char *
864dbfa3 3700Perl_get_no_modify(pTHX)
9e6b2b00 3701{
22c35a8c 3702 return (char*)PL_no_modify;
9e6b2b00
GS		 3703}
3704
3705U32 *
864dbfa3 3706Perl_get_opargs(pTHX)
9e6b2b00 3707{
22c35a8c 3708 return PL_opargs;
9e6b2b00 3709}
51aa15f3 3710
0cb96387
GS		 3711PPADDR_t*
3712Perl_get_ppaddr(pTHX)
3713{
12ae5dfc 3714 return (PPADDR_t*)PL_ppaddr;
0cb96387
GS		 3715}
3716
a6c40364
GS		 3717#ifndef HAS_GETENV_LEN
3718char *
bf4acbe4 3719Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
a6c40364
GS		 3720{
3721 char *env_trans = PerlEnv_getenv(env_elem);
3722 if (env_trans)
3723 *len = strlen(env_trans);
3724 return env_trans;
f675dbe5
CB		 3725}
3726#endif
3727
dc9e4912
GS		 3728
3729MGVTBL*
864dbfa3 3730Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3731{
3732 MGVTBL* result = Null(MGVTBL*);
3733
3734 switch(vtbl_id) {
3735 case want_vtbl_sv:
3736 result = &PL_vtbl_sv;
3737 break;
3738 case want_vtbl_env:
3739 result = &PL_vtbl_env;
3740 break;
3741 case want_vtbl_envelem:
3742 result = &PL_vtbl_envelem;
3743 break;
3744 case want_vtbl_sig:
3745 result = &PL_vtbl_sig;
3746 break;
3747 case want_vtbl_sigelem:
3748 result = &PL_vtbl_sigelem;
3749 break;
3750 case want_vtbl_pack:
3751 result = &PL_vtbl_pack;
3752 break;
3753 case want_vtbl_packelem:
3754 result = &PL_vtbl_packelem;
3755 break;
3756 case want_vtbl_dbline:
3757 result = &PL_vtbl_dbline;
3758 break;
3759 case want_vtbl_isa:
3760 result = &PL_vtbl_isa;
3761 break;
3762 case want_vtbl_isaelem:
3763 result = &PL_vtbl_isaelem;
3764 break;
3765 case want_vtbl_arylen:
3766 result = &PL_vtbl_arylen;
3767 break;
3768 case want_vtbl_glob:
3769 result = &PL_vtbl_glob;
3770 break;
3771 case want_vtbl_mglob:
3772 result = &PL_vtbl_mglob;
3773 break;
3774 case want_vtbl_nkeys:
3775 result = &PL_vtbl_nkeys;
3776 break;
3777 case want_vtbl_taint:
3778 result = &PL_vtbl_taint;
3779 break;
3780 case want_vtbl_substr:
3781 result = &PL_vtbl_substr;
3782 break;
3783 case want_vtbl_vec:
3784 result = &PL_vtbl_vec;
3785 break;
3786 case want_vtbl_pos:
3787 result = &PL_vtbl_pos;
3788 break;
3789 case want_vtbl_bm:
3790 result = &PL_vtbl_bm;
3791 break;
3792 case want_vtbl_fm:
3793 result = &PL_vtbl_fm;
3794 break;
3795 case want_vtbl_uvar:
3796 result = &PL_vtbl_uvar;
3797 break;
3798#ifdef USE_THREADS
3799 case want_vtbl_mutex:
3800 result = &PL_vtbl_mutex;
3801 break;
3802#endif
3803 case want_vtbl_defelem:
3804 result = &PL_vtbl_defelem;
3805 break;
3806 case want_vtbl_regexp:
3807 result = &PL_vtbl_regexp;
3808 break;
3809 case want_vtbl_regdata:
3810 result = &PL_vtbl_regdata;
3811 break;
3812 case want_vtbl_regdatum:
3813 result = &PL_vtbl_regdatum;
3814 break;
3c90161d 3815#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3816 case want_vtbl_collxfrm:
3817 result = &PL_vtbl_collxfrm;
3818 break;
3c90161d 3819#endif
dc9e4912
GS		 3820 case want_vtbl_amagic:
3821 result = &PL_vtbl_amagic;
3822 break;
3823 case want_vtbl_amagicelem:
3824 result = &PL_vtbl_amagicelem;
3825 break;
810b8aa5
GS		 3826 case want_vtbl_backref:
3827 result = &PL_vtbl_backref;
3828 break;
dc9e4912
GS		 3829 }
3830 return result;
3831}
3832
767df6a1 3833I32
864dbfa3 3834Perl_my_fflush_all(pTHX)
767df6a1
JH		 3835{
3836#ifdef FFLUSH_NULL
ce720889 3837 return PerlIO_flush(NULL);
767df6a1
JH		 3838#else
3839 long open_max = -1;
ed39a0f2 3840# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3841# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3842 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3843# else
767df6a1
JH		 3844# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3845 open_max = sysconf(_SC_OPEN_MAX);
3846# else
3847# ifdef FOPEN_MAX
d2201af2 3848 open_max = FOPEN_MAX;
767df6a1
JH		 3849# else
3850# ifdef OPEN_MAX
d2201af2 3851 open_max = OPEN_MAX;
767df6a1
JH		 3852# else
3853# ifdef _NFILE
d2201af2 3854 open_max = _NFILE;
767df6a1
JH		 3855# endif
3856# endif
3857# endif
3858# endif
d2201af2 3859# endif
767df6a1
JH		 3860 if (open_max > 0) {
3861 long i;
3862 for (i = 0; i < open_max; i++)
d2201af2
AD		 3863 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3864 STDIO_STREAM_ARRAY[i]._file < open_max &&
3865 STDIO_STREAM_ARRAY[i]._flag)
3866 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3867 return 0;
3868 }
3869# endif
3870 SETERRNO(EBADF,RMS$_IFI);
3871 return EOF;
3872#endif
3873}
097ee67d 3874
65202027 3875NV
69282e91
GS		 3876Perl_my_atof(pTHX_ const char* s)
3877{
097ee67d 3878#ifdef USE_LOCALE_NUMERIC
d43ce814 3879 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3880 NV x, y;
097ee67d 3881
65202027 3882 x = Perl_atof(s);
097ee67d 3883 SET_NUMERIC_STANDARD();
65202027 3884 y = Perl_atof(s);
097ee67d
JH		 3885 SET_NUMERIC_LOCAL();
3886 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3887 return y;
3888 return x;
65202027
DS		 3889 }
3890 else
3891 return Perl_atof(s);
097ee67d 3892#else
65202027 3893 return Perl_atof(s);
097ee67d
JH		 3894#endif
3895}
69282e91
GS		 3896
3897void
bc37a18f
RG		 3898Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3899{
9c0fcd4f 3900 char *vile;
4e34385f 3901 I32 warn_type;
bc37a18f 3902 char *func =
66fc2fa5
JH		 3903 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3904 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
bc37a18f
RG		 3905 PL_op_desc[op];
3906 char *pars = OP_IS_FILETEST(op) ? "" : "()";
50952442 3907 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
2dd78f96 3908 "socket" : "filehandle";
9c0fcd4f 3909 char *name = NULL;
bc37a18f 3910
50952442 3911 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
9c0fcd4f 3912 vile = "closed";
4e34385f 3913 warn_type = WARN_CLOSED;
2dd78f96
JH		 3914 }
3915 else {
9c0fcd4f 3916 vile = "unopened";
4e34385f 3917 warn_type = WARN_UNOPENED;
9c0fcd4f 3918 }
bc37a18f 3919
66fc2fa5
JH		 3920 if (gv && isGV(gv)) {
3921 SV *sv = sv_newmortal();
3922 gv_efullname4(sv, gv, Nullch, FALSE);
3923 name = SvPVX(sv);
3924 }
3925
2dd78f96 3926 if (name && *name) {
4e34385f 3927 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3928 "%s%s on %s %s %s", func, pars, vile, type, name);
3e11456d 3929 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3930 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3931 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3932 func, pars, name);
2dd78f96
JH		 3933 }
3934 else {
4e34385f 3935 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3936 "%s%s on %s %s", func, pars, vile, type);
3e11456d 3937 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3938 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3939 "\t(Are you trying to call %s%s on dirhandle?)\n",
3940 func, pars);
3941 }
69282e91 3942}
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