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make safesysmalloc() etc., always available; safemalloc() et al are
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, 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"
8d063cd8 16#include "perl.h"
62b28dd9 17
e1dfb34b 18#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 19#include <signal.h>
62b28dd9 20#endif
a687059c 21
36477c24
PP
22#ifndef SIG_ERR
23# define SIG_ERR ((Sighandler_t) -1)
24#endif
25
bd4080b3 26/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 27#ifdef I_UNISTD
8990e307
LW
28# include <unistd.h>
29#endif
30
a687059c
LW
31#ifdef I_VFORK
32# include <vfork.h>
33#endif
34
94b6baf5
AD
35/* Put this after #includes because fork and vfork prototypes may
36 conflict.
37*/
38#ifndef HAS_VFORK
39# define vfork fork
40#endif
41
fe14fcc3
LW
42#ifdef I_FCNTL
43# include <fcntl.h>
44#endif
45#ifdef I_SYS_FILE
46# include <sys/file.h>
47#endif
48
ff68c719
PP
49#ifdef I_SYS_WAIT
50# include <sys/wait.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e 55#ifdef LEAKTEST
a0d0e21e 56
8c52afec
IZ
57static void xstat _((int));
58long xcount[MAXXCOUNT];
59long lastxcount[MAXXCOUNT];
60long xycount[MAXXCOUNT][MAXYCOUNT];
61long lastxycount[MAXXCOUNT][MAXYCOUNT];
62
a0d0e21e 63#endif
a863c7d1 64
f2517201 65/* paranoid version of system's malloc() */
8d063cd8 66
a687059c
LW
67/* NOTE: Do not call the next three routines directly. Use the macros
68 * in handy.h, so that we can easily redefine everything to do tracking of
69 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 70 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
71 */
72
bd4080b3 73Malloc_t
f2517201 74safesysmalloc(MEM_SIZE size)
8d063cd8 75{
bd4080b3 76 Malloc_t ptr;
55497cff 77#ifdef HAS_64K_LIMIT
62b28dd9 78 if (size > 0xffff) {
760ac839 79 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW
83#ifdef DEBUGGING
84 if ((long)size < 0)
463ee0b2 85 croak("panic: malloc");
34de22dd 86#endif
6ad3d225 87 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 88#if !(defined(I286) || defined(atarist))
3280af22 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 90#else
6b88bc9c 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW
92#endif
93 if (ptr != Nullch)
94 return ptr;
3280af22 95 else if (PL_nomemok)
7c0587c8 96 return Nullch;
8d063cd8 97 else {
22c35a8c 98 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
79072805 99 my_exit(1);
4e35701f 100 return Nullch;
8d063cd8
LW
101 }
102 /*NOTREACHED*/
103}
104
f2517201 105/* paranoid version of system's realloc() */
8d063cd8 106
bd4080b3 107Malloc_t
f2517201 108safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 109{
bd4080b3 110 Malloc_t ptr;
ecfc5424 111#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 112 Malloc_t PerlMem_realloc();
ecfc5424 113#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 114
55497cff 115#ifdef HAS_64K_LIMIT
5f05dabc
PP
116 if (size > 0xffff) {
117 PerlIO_printf(PerlIO_stderr(),
118 "Reallocation too large: %lx\n", size) FLUSH;
119 my_exit(1);
120 }
55497cff 121#endif /* HAS_64K_LIMIT */
7614df0c 122 if (!size) {
f2517201 123 safesysfree(where);
7614df0c
JD
124 return NULL;
125 }
126
378cc40b 127 if (!where)
f2517201 128 return safesysmalloc(size);
34de22dd
LW
129#ifdef DEBUGGING
130 if ((long)size < 0)
463ee0b2 131 croak("panic: realloc");
34de22dd 132#endif
7614df0c 133 ptr = PerlMem_realloc(where,size);
79072805
LW
134
135#if !(defined(I286) || defined(atarist))
136 DEBUG_m( {
3280af22
NIS
137 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
138 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805
LW
139 } )
140#else
141 DEBUG_m( {
6b88bc9c
GS
142 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++);
143 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805 144 } )
8d063cd8 145#endif
79072805 146
8d063cd8
LW
147 if (ptr != Nullch)
148 return ptr;
3280af22 149 else if (PL_nomemok)
7c0587c8 150 return Nullch;
8d063cd8 151 else {
22c35a8c 152 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
79072805 153 my_exit(1);
4e35701f 154 return Nullch;
8d063cd8
LW
155 }
156 /*NOTREACHED*/
157}
158
f2517201 159/* safe version of system's free() */
8d063cd8 160
54310121 161Free_t
f2517201 162safesysfree(Malloc_t where)
8d063cd8 163{
79072805 164#if !(defined(I286) || defined(atarist))
3280af22 165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
79072805 166#else
6b88bc9c 167 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
8d063cd8 168#endif
378cc40b 169 if (where) {
de3bb511 170 /*SUPPRESS 701*/
6ad3d225 171 PerlMem_free(where);
378cc40b 172 }
8d063cd8
LW
173}
174
f2517201 175/* safe version of system's calloc() */
1050c9ca 176
bd4080b3 177Malloc_t
f2517201 178safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 179{
bd4080b3 180 Malloc_t ptr;
1050c9ca 181
55497cff 182#ifdef HAS_64K_LIMIT
5f05dabc
PP
183 if (size * count > 0xffff) {
184 PerlIO_printf(PerlIO_stderr(),
185 "Allocation too large: %lx\n", size * count) FLUSH;
186 my_exit(1);
187 }
55497cff 188#endif /* HAS_64K_LIMIT */
1050c9ca
PP
189#ifdef DEBUGGING
190 if ((long)size < 0 || (long)count < 0)
191 croak("panic: calloc");
192#endif
0b7c1c42 193 size *= count;
6ad3d225 194 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 195#if !(defined(I286) || defined(atarist))
3280af22 196 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 197#else
6b88bc9c 198 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 199#endif
1050c9ca
PP
200 if (ptr != Nullch) {
201 memset((void*)ptr, 0, size);
202 return ptr;
203 }
3280af22 204 else if (PL_nomemok)
1050c9ca
PP
205 return Nullch;
206 else {
22c35a8c 207 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
1050c9ca 208 my_exit(1);
4e35701f 209 return Nullch;
1050c9ca
PP
210 }
211 /*NOTREACHED*/
212}
213
a687059c
LW
214#ifdef LEAKTEST
215
8c52afec
IZ
216struct mem_test_strut {
217 union {
218 long type;
219 char c[2];
220 } u;
221 long size;
222};
223
224# define ALIGN sizeof(struct mem_test_strut)
225
226# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
227# define typeof_chunk(ch) \
228 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
229# define set_typeof_chunk(ch,t) \
230 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
231#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
232 ? MAXYCOUNT - 1 \
233 : ( (size) > 40 \
234 ? ((size) - 1)/8 + 5 \
235 : ((size) - 1)/4))
8d063cd8 236
bd4080b3 237Malloc_t
f0f333f4 238safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 239{
8c52afec 240 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 241
8c52afec
IZ
242 xcount[x] += size;
243 xycount[x][SIZE_TO_Y(size)]++;
244 set_typeof_chunk(where, x);
245 sizeof_chunk(where) = size;
246 return (Malloc_t)(where + ALIGN);
8d063cd8 247}
8d063cd8 248
bd4080b3 249Malloc_t
8c52afec 250safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 251{
8c52afec
IZ
252 char *where = (char*)wh;
253
254 if (!wh)
255 return safexmalloc(0,size);
256
257 {
258 MEM_SIZE old = sizeof_chunk(where - ALIGN);
259 int t = typeof_chunk(where - ALIGN);
260 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
261
262 xycount[t][SIZE_TO_Y(old)]--;
263 xycount[t][SIZE_TO_Y(size)]++;
264 xcount[t] += size - old;
265 sizeof_chunk(new) = size;
266 return (Malloc_t)(new + ALIGN);
267 }
a687059c
LW
268}
269
270void
8c52afec 271safexfree(Malloc_t wh)
a687059c 272{
79072805 273 I32 x;
8c52afec
IZ
274 char *where = (char*)wh;
275 MEM_SIZE size;
276
a687059c
LW
277 if (!where)
278 return;
279 where -= ALIGN;
8c52afec 280 size = sizeof_chunk(where);
a687059c 281 x = where[0] + 100 * where[1];
8c52afec
IZ
282 xcount[x] -= size;
283 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
284 safefree(where);
285}
286
bd4080b3 287Malloc_t
f0f333f4 288safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 289{
8c52afec
IZ
290 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
291 xcount[x] += size;
292 xycount[x][SIZE_TO_Y(size)]++;
293 memset((void*)(where + ALIGN), 0, size * count);
294 set_typeof_chunk(where, x);
295 sizeof_chunk(where) = size;
296 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
297}
298
7c0587c8 299static void
8c52afec 300xstat(int flag)
8d063cd8 301{
8c52afec
IZ
302 register I32 i, j, total = 0;
303 I32 subtot[MAXYCOUNT];
8d063cd8 304
8c52afec
IZ
305 for (j = 0; j < MAXYCOUNT; j++) {
306 subtot[j] = 0;
307 }
308
309 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 310 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
311 total += xcount[i];
312 for (j = 0; j < MAXYCOUNT; j++) {
313 subtot[j] += xycount[i][j];
314 }
315 if (flag == 0
316 ? xcount[i] /* Have something */
317 : (flag == 2
318 ? xcount[i] != lastxcount[i] /* Changed */
319 : xcount[i] > lastxcount[i])) { /* Growed */
320 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
321 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 322 lastxcount[i] = xcount[i];
8c52afec
IZ
323 for (j = 0; j < MAXYCOUNT; j++) {
324 if ( flag == 0
325 ? xycount[i][j] /* Have something */
326 : (flag == 2
327 ? xycount[i][j] != lastxycount[i][j] /* Changed */
328 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
329 PerlIO_printf(PerlIO_stderr(),"%3ld ",
330 flag == 2
331 ? xycount[i][j] - lastxycount[i][j]
332 : xycount[i][j]);
333 lastxycount[i][j] = xycount[i][j];
334 } else {
335 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
336 }
337 }
338 PerlIO_printf(PerlIO_stderr(), "\n");
339 }
340 }
341 if (flag != 2) {
342 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
343 for (j = 0; j < MAXYCOUNT; j++) {
344 if (subtot[j]) {
345 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
346 } else {
347 PerlIO_printf(PerlIO_stderr(), " . ");
348 }
8d063cd8 349 }
8c52afec 350 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 351 }
8d063cd8 352}
a687059c
LW
353
354#endif /* LEAKTEST */
8d063cd8
LW
355
356/* copy a string up to some (non-backslashed) delimiter, if any */
357
358char *
8ac85365 359delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 360{
fc36a67e
PP
361 register I32 tolen;
362 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
363 if (*from == '\\') {
364 if (from[1] == delim)
365 from++;
fc36a67e
PP
366 else {
367 if (to < toend)
368 *to++ = *from;
369 tolen++;
370 from++;
371 }
378cc40b 372 }
bedebaa5 373 else if (*from == delim)
8d063cd8 374 break;
fc36a67e
PP
375 if (to < toend)
376 *to++ = *from;
8d063cd8 377 }
bedebaa5
CS
378 if (to < toend)
379 *to = '\0';
fc36a67e 380 *retlen = tolen;
8d063cd8
LW
381 return from;
382}
383
384/* return ptr to little string in big string, NULL if not found */
378cc40b 385/* This routine was donated by Corey Satten. */
8d063cd8
LW
386
387char *
8ac85365 388instr(register char *big, register char *little)
378cc40b
LW
389{
390 register char *s, *x;
79072805 391 register I32 first;
378cc40b 392
a687059c
LW
393 if (!little)
394 return big;
395 first = *little++;
378cc40b
LW
396 if (!first)
397 return big;
398 while (*big) {
399 if (*big++ != first)
400 continue;
401 for (x=big,s=little; *s; /**/ ) {
402 if (!*x)
403 return Nullch;
404 if (*s++ != *x++) {
405 s--;
406 break;
407 }
408 }
409 if (!*s)
410 return big-1;
411 }
412 return Nullch;
413}
8d063cd8 414
a687059c
LW
415/* same as instr but allow embedded nulls */
416
417char *
8ac85365 418ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 419{
a687059c 420 register char *s, *x;
79072805 421 register I32 first = *little;
a687059c 422 register char *littleend = lend;
378cc40b 423
a0d0e21e 424 if (!first && little >= littleend)
a687059c 425 return big;
de3bb511
LW
426 if (bigend - big < littleend - little)
427 return Nullch;
a687059c
LW
428 bigend -= littleend - little++;
429 while (big <= bigend) {
430 if (*big++ != first)
431 continue;
432 for (x=big,s=little; s < littleend; /**/ ) {
433 if (*s++ != *x++) {
434 s--;
435 break;
436 }
437 }
438 if (s >= littleend)
439 return big-1;
378cc40b 440 }
a687059c
LW
441 return Nullch;
442}
443
444/* reverse of the above--find last substring */
445
446char *
8ac85365 447rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
448{
449 register char *bigbeg;
450 register char *s, *x;
79072805 451 register I32 first = *little;
a687059c
LW
452 register char *littleend = lend;
453
a0d0e21e 454 if (!first && little >= littleend)
a687059c
LW
455 return bigend;
456 bigbeg = big;
457 big = bigend - (littleend - little++);
458 while (big >= bigbeg) {
459 if (*big-- != first)
460 continue;
461 for (x=big+2,s=little; s < littleend; /**/ ) {
462 if (*s++ != *x++) {
463 s--;
464 break;
465 }
466 }
467 if (s >= littleend)
468 return big+1;
378cc40b 469 }
a687059c 470 return Nullch;
378cc40b 471}
a687059c 472
bbce6d69
PP
473/*
474 * Set up for a new ctype locale.
475 */
55497cff 476void
8ac85365 477perl_new_ctype(char *newctype)
ef7eada9 478{
36477c24
PP
479#ifdef USE_LOCALE_CTYPE
480
bbce6d69 481 int i;
ef7eada9 482
bbce6d69
PP
483 for (i = 0; i < 256; i++) {
484 if (isUPPER_LC(i))
22c35a8c 485 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 486 else if (isLOWER_LC(i))
22c35a8c 487 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 488 else
22c35a8c 489 PL_fold_locale[i] = i;
bbce6d69 490 }
bbce6d69 491
36477c24
PP
492#endif /* USE_LOCALE_CTYPE */
493}
bbce6d69
PP
494
495/*
496 * Set up for a new collation locale.
497 */
498void
8ac85365 499perl_new_collate(char *newcoll)
bbce6d69 500{
36477c24
PP
501#ifdef USE_LOCALE_COLLATE
502
bbce6d69 503 if (! newcoll) {
3280af22
NIS
504 if (PL_collation_name) {
505 ++PL_collation_ix;
506 Safefree(PL_collation_name);
507 PL_collation_name = NULL;
508 PL_collation_standard = TRUE;
509 PL_collxfrm_base = 0;
510 PL_collxfrm_mult = 2;
bbce6d69
PP
511 }
512 return;
513 }
514
3280af22
NIS
515 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
516 ++PL_collation_ix;
517 Safefree(PL_collation_name);
518 PL_collation_name = savepv(newcoll);
519 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 520
bbce6d69
PP
521 {
522 /* 2: at most so many chars ('a', 'b'). */
523 /* 50: surely no system expands a char more. */
524#define XFRMBUFSIZE (2 * 50)
525 char xbuf[XFRMBUFSIZE];
526 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
527 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
528 SSize_t mult = fb - fa;
529 if (mult < 1)
530 croak("strxfrm() gets absurd");
3280af22
NIS
531 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
532 PL_collxfrm_mult = mult;
bbce6d69 533 }
bbce6d69 534 }
bbce6d69 535
36477c24
PP
536#endif /* USE_LOCALE_COLLATE */
537}
bbce6d69
PP
538
539/*
540 * Set up for a new numeric locale.
541 */
542void
8ac85365 543perl_new_numeric(char *newnum)
bbce6d69 544{
36477c24
PP
545#ifdef USE_LOCALE_NUMERIC
546
bbce6d69 547 if (! newnum) {
3280af22
NIS
548 if (PL_numeric_name) {
549 Safefree(PL_numeric_name);
550 PL_numeric_name = NULL;
551 PL_numeric_standard = TRUE;
552 PL_numeric_local = TRUE;
bbce6d69
PP
553 }
554 return;
555 }
556
3280af22
NIS
557 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
558 Safefree(PL_numeric_name);
559 PL_numeric_name = savepv(newnum);
560 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
561 PL_numeric_local = TRUE;
bbce6d69 562 }
36477c24
PP
563
564#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
565}
566
567void
8ac85365 568perl_set_numeric_standard(void)
bbce6d69 569{
5f05dabc
PP
570#ifdef USE_LOCALE_NUMERIC
571
3280af22 572 if (! PL_numeric_standard) {
bbce6d69 573 setlocale(LC_NUMERIC, "C");
3280af22
NIS
574 PL_numeric_standard = TRUE;
575 PL_numeric_local = FALSE;
bbce6d69 576 }
5f05dabc
PP
577
578#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
579}
580
581void
8ac85365 582perl_set_numeric_local(void)
bbce6d69 583{
5f05dabc
PP
584#ifdef USE_LOCALE_NUMERIC
585
3280af22
NIS
586 if (! PL_numeric_local) {
587 setlocale(LC_NUMERIC, PL_numeric_name);
588 PL_numeric_standard = FALSE;
589 PL_numeric_local = TRUE;
bbce6d69 590 }
bbce6d69 591
36477c24 592#endif /* USE_LOCALE_NUMERIC */
5f05dabc 593}
36477c24 594
bbce6d69 595
36477c24
PP
596/*
597 * Initialize locale awareness.
598 */
f0c5b223 599int
8ac85365 600perl_init_i18nl10n(int printwarn)
f0c5b223
TB
601{
602 int ok = 1;
603 /* returns
604 * 1 = set ok or not applicable,
605 * 0 = fallback to C locale,
606 * -1 = fallback to C locale failed
607 */
bbce6d69 608
36477c24 609#ifdef USE_LOCALE
bbce6d69 610
36477c24 611#ifdef USE_LOCALE_CTYPE
bbce6d69 612 char *curctype = NULL;
36477c24
PP
613#endif /* USE_LOCALE_CTYPE */
614#ifdef USE_LOCALE_COLLATE
bbce6d69 615 char *curcoll = NULL;
36477c24
PP
616#endif /* USE_LOCALE_COLLATE */
617#ifdef USE_LOCALE_NUMERIC
bbce6d69 618 char *curnum = NULL;
36477c24 619#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
620#ifdef __GLIBC__
621 char *language = PerlEnv_getenv("LANGUAGE");
622#endif
76e3520e
GS
623 char *lc_all = PerlEnv_getenv("LC_ALL");
624 char *lang = PerlEnv_getenv("LANG");
bbce6d69 625 bool setlocale_failure = FALSE;
f0c5b223 626
02b32252
CS
627#ifdef LOCALE_ENVIRON_REQUIRED
628
629 /*
630 * Ultrix setlocale(..., "") fails if there are no environment
631 * variables from which to get a locale name.
632 */
633
634 bool done = FALSE;
635
636#ifdef LC_ALL
637 if (lang) {
638 if (setlocale(LC_ALL, ""))
639 done = TRUE;
640 else
641 setlocale_failure = TRUE;
642 }
0644c9cb 643 if (!setlocale_failure) {
02b32252 644#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
645 if (! (curctype =
646 setlocale(LC_CTYPE,
647 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
648 ? "" : Nullch)))
649 setlocale_failure = TRUE;
650#endif /* USE_LOCALE_CTYPE */
651#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
652 if (! (curcoll =
653 setlocale(LC_COLLATE,
654 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
655 ? "" : Nullch)))
656 setlocale_failure = TRUE;
657#endif /* USE_LOCALE_COLLATE */
658#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
659 if (! (curnum =
660 setlocale(LC_NUMERIC,
661 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_NUMERIC */
665 }
666
0644c9cb 667#endif /* LC_ALL */
02b32252 668
0644c9cb 669#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 670
0644c9cb 671#ifdef LC_ALL
bbce6d69
PP
672 if (! setlocale(LC_ALL, ""))
673 setlocale_failure = TRUE;
0644c9cb 674#endif /* LC_ALL */
bbce6d69 675
0644c9cb 676 if (!setlocale_failure) {
36477c24 677#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
678 if (! (curctype = setlocale(LC_CTYPE, "")))
679 setlocale_failure = TRUE;
36477c24
PP
680#endif /* USE_LOCALE_CTYPE */
681#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
682 if (! (curcoll = setlocale(LC_COLLATE, "")))
683 setlocale_failure = TRUE;
36477c24
PP
684#endif /* USE_LOCALE_COLLATE */
685#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
686 if (! (curnum = setlocale(LC_NUMERIC, "")))
687 setlocale_failure = TRUE;
36477c24 688#endif /* USE_LOCALE_NUMERIC */
0644c9cb 689 }
02b32252 690
5f05dabc
PP
691 if (setlocale_failure) {
692 char *p;
693 bool locwarn = (printwarn > 1 ||
694 printwarn &&
76e3520e 695 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 696
5f05dabc
PP
697 if (locwarn) {
698#ifdef LC_ALL
699
700 PerlIO_printf(PerlIO_stderr(),
701 "perl: warning: Setting locale failed.\n");
702
703#else /* !LC_ALL */
704
ef7eada9 705 PerlIO_printf(PerlIO_stderr(),
bbce6d69 706 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 707#ifdef USE_LOCALE_CTYPE
bbce6d69 708 if (! curctype)
5f05dabc 709 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
710#endif /* USE_LOCALE_CTYPE */
711#ifdef USE_LOCALE_COLLATE
bbce6d69 712 if (! curcoll)
5f05dabc 713 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
714#endif /* USE_LOCALE_COLLATE */
715#ifdef USE_LOCALE_NUMERIC
bbce6d69 716 if (! curnum)
5f05dabc 717 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 718#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
719 PerlIO_printf(PerlIO_stderr(), "\n");
720
5f05dabc
PP
721#endif /* LC_ALL */
722
760ac839 723 PerlIO_printf(PerlIO_stderr(),
bbce6d69 724 "perl: warning: Please check that your locale settings:\n");
ef7eada9 725
3aeabbed
JH
726#ifdef __GLIBC__
727 PerlIO_printf(PerlIO_stderr(),
728 "\tLANGUAGE = %c%s%c,\n",
729 language ? '"' : '(',
730 language ? language : "unset",
731 language ? '"' : ')');
732#endif
733
ef7eada9 734 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
735 "\tLC_ALL = %c%s%c,\n",
736 lc_all ? '"' : '(',
737 lc_all ? lc_all : "unset",
738 lc_all ? '"' : ')');
5f05dabc
PP
739
740 {
741 char **e;
742 for (e = environ; *e; e++) {
743 if (strnEQ(*e, "LC_", 3)
744 && strnNE(*e, "LC_ALL=", 7)
745 && (p = strchr(*e, '=')))
746 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 747 (int)(p - *e), *e, p + 1);
5f05dabc
PP
748 }
749 }
750
ef7eada9 751 PerlIO_printf(PerlIO_stderr(),
bbce6d69 752 "\tLANG = %c%s%c\n",
5f05dabc 753 lang ? '"' : '(',
bbce6d69
PP
754 lang ? lang : "unset",
755 lang ? '"' : ')');
ef7eada9 756
bbce6d69
PP
757 PerlIO_printf(PerlIO_stderr(),
758 " are supported and installed on your system.\n");
5f05dabc 759 }
ef7eada9 760
5f05dabc
PP
761#ifdef LC_ALL
762
763 if (setlocale(LC_ALL, "C")) {
764 if (locwarn)
765 PerlIO_printf(PerlIO_stderr(),
766 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 767 ok = 0;
ef7eada9 768 }
5f05dabc
PP
769 else {
770 if (locwarn)
771 PerlIO_printf(PerlIO_stderr(),
772 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
773 ok = -1;
774 }
bbce6d69 775
5f05dabc
PP
776#else /* ! LC_ALL */
777
778 if (0
36477c24 779#ifdef USE_LOCALE_CTYPE
5f05dabc 780 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
781#endif /* USE_LOCALE_CTYPE */
782#ifdef USE_LOCALE_COLLATE
5f05dabc 783 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
784#endif /* USE_LOCALE_COLLATE */
785#ifdef USE_LOCALE_NUMERIC
5f05dabc 786 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 787#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
788 )
789 {
790 if (locwarn)
bbce6d69 791 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
792 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
793 ok = -1;
bbce6d69 794 }
5f05dabc 795
bbce6d69 796#endif /* ! LC_ALL */
5f05dabc
PP
797
798#ifdef USE_LOCALE_CTYPE
799 curctype = setlocale(LC_CTYPE, Nullch);
800#endif /* USE_LOCALE_CTYPE */
801#ifdef USE_LOCALE_COLLATE
802 curcoll = setlocale(LC_COLLATE, Nullch);
803#endif /* USE_LOCALE_COLLATE */
804#ifdef USE_LOCALE_NUMERIC
805 curnum = setlocale(LC_NUMERIC, Nullch);
806#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
807 }
808
36477c24 809#ifdef USE_LOCALE_CTYPE
bbce6d69 810 perl_new_ctype(curctype);
36477c24 811#endif /* USE_LOCALE_CTYPE */
bbce6d69 812
36477c24 813#ifdef USE_LOCALE_COLLATE
bbce6d69 814 perl_new_collate(curcoll);
36477c24 815#endif /* USE_LOCALE_COLLATE */
bbce6d69 816
36477c24 817#ifdef USE_LOCALE_NUMERIC
bbce6d69 818 perl_new_numeric(curnum);
36477c24 819#endif /* USE_LOCALE_NUMERIC */
ef7eada9 820
36477c24 821#endif /* USE_LOCALE */
ef7eada9 822
f0c5b223
TB
823 return ok;
824}
825
bbce6d69
PP
826/* Backwards compatibility. */
827int
8ac85365 828perl_init_i18nl14n(int printwarn)
bbce6d69 829{
5f05dabc 830 return perl_init_i18nl10n(printwarn);
bbce6d69 831}
ef7eada9 832
36477c24 833#ifdef USE_LOCALE_COLLATE
ef7eada9 834
bbce6d69
PP
835/*
836 * mem_collxfrm() is a bit like strxfrm() but with two important
837 * differences. First, it handles embedded NULs. Second, it allocates
838 * a bit more memory than needed for the transformed data itself.
839 * The real transformed data begins at offset sizeof(collationix).
840 * Please see sv_collxfrm() to see how this is used.
841 */
842char *
8ac85365 843mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
844{
845 char *xbuf;
76e3520e 846 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
847
848 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
849 /* the +1 is for the terminating NUL. */
850
3280af22 851 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 852 New(171, xbuf, xAlloc, char);
bbce6d69
PP
853 if (! xbuf)
854 goto bad;
855
3280af22
NIS
856 *(U32*)xbuf = PL_collation_ix;
857 xout = sizeof(PL_collation_ix);
bbce6d69
PP
858 for (xin = 0; xin < len; ) {
859 SSize_t xused;
860
861 for (;;) {
76e3520e 862 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
863 if (xused == -1)
864 goto bad;
76e3520e 865 if (xused < xAlloc - xout)
bbce6d69 866 break;
76e3520e
GS
867 xAlloc = (2 * xAlloc) + 1;
868 Renew(xbuf, xAlloc, char);
bbce6d69
PP
869 if (! xbuf)
870 goto bad;
871 }
ef7eada9 872
bbce6d69
PP
873 xin += strlen(s + xin) + 1;
874 xout += xused;
875
876 /* Embedded NULs are understood but silently skipped
877 * because they make no sense in locale collation. */
878 }
ef7eada9 879
bbce6d69 880 xbuf[xout] = '\0';
3280af22 881 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
882 return xbuf;
883
884 bad:
885 Safefree(xbuf);
886 *xlen = 0;
887 return NULL;
ef7eada9
JH
888}
889
36477c24 890#endif /* USE_LOCALE_COLLATE */
bbce6d69 891
378cc40b 892void
2779dcf1 893fbm_compile(SV *sv, U32 flags /* not used yet */)
378cc40b 894{
942e002e
GS
895 register U8 *s;
896 register U8 *table;
79072805 897 register U32 i;
0b71040e 898 STRLEN len;
79072805
LW
899 I32 rarest = 0;
900 U32 frequency = 256;
901
942e002e 902 s = (U8*)SvPV_force(sv, len);
07f14f54 903 (void)SvUPGRADE(sv, SVt_PVBM);
c277df42 904 if (len > 255 || len == 0) /* TAIL might be on on a zero-length string. */
748a9306 905 return; /* can't have offsets that big */
02128f11
IZ
906 if (len > 2) {
907 Sv_Grow(sv,len + 258);
908 table = (unsigned char*)(SvPVX(sv) + len + 1);
909 s = table - 2;
910 for (i = 0; i < 256; i++) {
911 table[i] = len;
912 }
913 i = 0;
914 while (s >= (unsigned char*)(SvPVX(sv)))
915 {
916 if (table[*s] == len)
917 table[*s] = i;
918 s--,i++;
919 }
378cc40b 920 }
bbce6d69 921 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 922 SvVALID_on(sv);
378cc40b 923
463ee0b2 924 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 925 for (i = 0; i < len; i++) {
22c35a8c 926 if (PL_freq[s[i]] < frequency) {
bbce6d69 927 rarest = i;
22c35a8c 928 frequency = PL_freq[s[i]];
378cc40b
LW
929 }
930 }
79072805
LW
931 BmRARE(sv) = s[rarest];
932 BmPREVIOUS(sv) = rarest;
760ac839 933 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
934}
935
378cc40b 936char *
411d5715 937fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 938{
a687059c 939 register unsigned char *s;
79072805
LW
940 register I32 tmp;
941 register I32 littlelen;
a687059c
LW
942 register unsigned char *little;
943 register unsigned char *table;
944 register unsigned char *olds;
945 register unsigned char *oldlittle;
378cc40b 946
79072805 947 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
948 STRLEN len;
949 char *l = SvPV(littlestr,len);
c277df42 950 if (!len) {
02128f11
IZ
951 if (SvTAIL(littlestr)) { /* Can be only 0-len constant
952 substr => we can ignore SvVALID */
3280af22 953 if (PL_multiline) {
02128f11 954 char *t = "\n";
3fe6f2dc
MB
955 if ((s = (unsigned char*)ninstr((char*)big, (char*)bigend,
956 t, t + len))) {
957 return (char*)s;
958 }
02128f11 959 }
c277df42 960 if (bigend > big && bigend[-1] == '\n')
161b471a 961 return (char *)(bigend - 1);
c277df42 962 else
161b471a 963 return (char *) bigend;
c277df42 964 }
d48672a2 965 return (char*)big;
c277df42 966 }
a0d0e21e 967 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 968 }
378cc40b 969
79072805 970 littlelen = SvCUR(littlestr);
3280af22 971 if (SvTAIL(littlestr) && !PL_multiline) { /* tail anchored? */
0f85fab0
LW
972 if (littlelen > bigend - big)
973 return Nullch;
463ee0b2 974 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 975 s = bigend - littlelen;
02128f11
IZ
976 if (s > big
977 && bigend[-1] == '\n'
978 && s[-1] == *little && memEQ((char*)s - 1,(char*)little,littlelen))
979 return (char*)s - 1; /* how sweet it is */
980 else if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 981 return (char*)s; /* how sweet it is */
02128f11
IZ
982 return Nullch;
983 }
984 if (littlelen <= 2) {
985 unsigned char c1 = (unsigned char)SvPVX(littlestr)[0];
986 unsigned char c2 = (unsigned char)SvPVX(littlestr)[1];
987 /* This may do extra comparisons if littlelen == 2, but this
988 should be hidden in the noise since we do less indirection. */
989
990 s = big;
991 bigend -= littlelen;
992 while (s <= bigend) {
993 if (s[0] == c1
994 && (littlelen == 1 || s[1] == c2)
995 && (!SvTAIL(littlestr)
996 || s == bigend
997 || s[littlelen] == '\n')) /* Automatically multiline */
3fe6f2dc
MB
998 {
999 return (char*)s;
1000 }
02128f11 1001 s++;
a687059c 1002 }
bbce6d69 1003 return Nullch;
a687059c 1004 }
463ee0b2 1005 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
1006 if (--littlelen >= bigend - big)
1007 return Nullch;
1008 s = big + littlelen;
a687059c 1009 oldlittle = little = table - 2;
bbce6d69
PP
1010 if (s < bigend) {
1011 top2:
1012 /*SUPPRESS 560*/
1013 if (tmp = table[*s]) {
62b28dd9 1014#ifdef POINTERRIGOR
bbce6d69
PP
1015 if (bigend - s > tmp) {
1016 s += tmp;
1017 goto top2;
1018 }
62b28dd9 1019#else
bbce6d69
PP
1020 if ((s += tmp) < bigend)
1021 goto top2;
62b28dd9 1022#endif
bbce6d69 1023 return Nullch;
a687059c 1024 }
bbce6d69
PP
1025 else {
1026 tmp = littlelen; /* less expensive than calling strncmp() */
1027 olds = s;
1028 while (tmp--) {
1029 if (*--s == *--little)
1030 continue;
c277df42 1031 differ:
bbce6d69
PP
1032 s = olds + 1; /* here we pay the price for failure */
1033 little = oldlittle;
1034 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 1035 goto top2;
62b28dd9 1036 return Nullch;
a687059c 1037 }
c277df42
IZ
1038 if (SvTAIL(littlestr) /* automatically multiline */
1039 && olds + 1 != bigend
1040 && olds[1] != '\n')
1041 goto differ;
bbce6d69 1042 return (char *)s;
378cc40b
LW
1043 }
1044 }
1045 return Nullch;
1046}
1047
c277df42
IZ
1048/* start_shift, end_shift are positive quantities which give offsets
1049 of ends of some substring of bigstr.
1050 If `last' we want the last occurence.
1051 old_posp is the way of communication between consequent calls if
1052 the next call needs to find the .
1053 The initial *old_posp should be -1.
1054 Note that we do not take into account SvTAIL, so it may give wrong
1055 positives if _ALL flag is set.
1056 */
1057
378cc40b 1058char *
c277df42 1059screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1060{
5c0ca799 1061 dTHR;
a687059c
LW
1062 register unsigned char *s, *x;
1063 register unsigned char *big;
79072805
LW
1064 register I32 pos;
1065 register I32 previous;
1066 register I32 first;
a687059c 1067 register unsigned char *little;
c277df42 1068 register I32 stop_pos;
a687059c 1069 register unsigned char *littleend;
c277df42 1070 I32 found = 0;
378cc40b 1071
c277df42 1072 if (*old_posp == -1
3280af22
NIS
1073 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1074 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0))
378cc40b 1075 return Nullch;
463ee0b2 1076 little = (unsigned char *)(SvPVX(littlestr));
79072805 1077 littleend = little + SvCUR(littlestr);
378cc40b 1078 first = *little++;
c277df42 1079 /* The value of pos we can start at: */
79072805 1080 previous = BmPREVIOUS(littlestr);
463ee0b2 1081 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1082 /* The value of pos we can stop at: */
1083 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1084 if (previous + start_shift > stop_pos) return Nullch;
1085 while (pos < previous + start_shift) {
3280af22 1086 if (!(pos += PL_screamnext[pos]))
378cc40b
LW
1087 return Nullch;
1088 }
de3bb511 1089#ifdef POINTERRIGOR
bbce6d69 1090 do {
ef64f398 1091 if (pos >= stop_pos) break;
bbce6d69
PP
1092 if (big[pos-previous] != first)
1093 continue;
1094 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1095 if (*s++ != *x++) {
1096 s--;
1097 break;
de3bb511 1098 }
bbce6d69 1099 }
c277df42
IZ
1100 if (s == littleend) {
1101 *old_posp = pos;
1102 if (!last) return (char *)(big+pos-previous);
1103 found = 1;
1104 }
6b88bc9c 1105 } while ( pos += PL_screamnext[pos] );
c277df42 1106 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1107#else /* !POINTERRIGOR */
1108 big -= previous;
bbce6d69 1109 do {
ef64f398 1110 if (pos >= stop_pos) break;
bbce6d69
PP
1111 if (big[pos] != first)
1112 continue;
1113 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1114 if (*s++ != *x++) {
1115 s--;
1116 break;
378cc40b 1117 }
bbce6d69 1118 }
c277df42
IZ
1119 if (s == littleend) {
1120 *old_posp = pos;
1121 if (!last) return (char *)(big+pos);
1122 found = 1;
1123 }
3280af22 1124 } while ( pos += PL_screamnext[pos] );
c277df42 1125 return (last && found) ? (char *)(big+(*old_posp)) : Nullch;
de3bb511 1126#endif /* POINTERRIGOR */
8d063cd8
LW
1127}
1128
79072805 1129I32
8ac85365 1130ibcmp(char *s1, char *s2, register I32 len)
79072805 1131{
bbce6d69
PP
1132 register U8 *a = (U8 *)s1;
1133 register U8 *b = (U8 *)s2;
79072805 1134 while (len--) {
22c35a8c 1135 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1136 return 1;
1137 a++,b++;
1138 }
1139 return 0;
1140}
1141
1142I32
8ac85365 1143ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
1144{
1145 register U8 *a = (U8 *)s1;
1146 register U8 *b = (U8 *)s2;
1147 while (len--) {
22c35a8c 1148 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1149 return 1;
1150 a++,b++;
79072805
LW
1151 }
1152 return 0;
1153}
1154
8d063cd8
LW
1155/* copy a string to a safe spot */
1156
1157char *
8ac85365 1158savepv(char *sv)
8d063cd8 1159{
a687059c 1160 register char *newaddr;
8d063cd8 1161
79072805
LW
1162 New(902,newaddr,strlen(sv)+1,char);
1163 (void)strcpy(newaddr,sv);
8d063cd8
LW
1164 return newaddr;
1165}
1166
a687059c
LW
1167/* same thing but with a known length */
1168
1169char *
8ac85365 1170savepvn(char *sv, register I32 len)
a687059c
LW
1171{
1172 register char *newaddr;
1173
1174 New(903,newaddr,len+1,char);
79072805 1175 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1176 newaddr[len] = '\0'; /* is now */
1177 return newaddr;
1178}
1179
fc36a67e
PP
1180/* the SV for form() and mess() is not kept in an arena */
1181
76e3520e 1182STATIC SV *
8ac85365 1183mess_alloc(void)
fc36a67e 1184{
e72dc28c 1185 dTHR;
fc36a67e
PP
1186 SV *sv;
1187 XPVMG *any;
1188
e72dc28c
GS
1189 if (!PL_dirty)
1190 return sv_2mortal(newSVpvn("",0));
1191
0372dbb6
GS
1192 if (PL_mess_sv)
1193 return PL_mess_sv;
1194
fc36a67e
PP
1195 /* Create as PVMG now, to avoid any upgrading later */
1196 New(905, sv, 1, SV);
1197 Newz(905, any, 1, XPVMG);
1198 SvFLAGS(sv) = SVt_PVMG;
1199 SvANY(sv) = (void*)any;
1200 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1201 PL_mess_sv = sv;
fc36a67e
PP
1202 return sv;
1203}
1204
8990e307 1205char *
46fc3d4c 1206form(const char* pat, ...)
8990e307 1207{
e72dc28c 1208 SV *sv = mess_alloc();
46fc3d4c 1209 va_list args;
46fc3d4c 1210 va_start(args, pat);
e72dc28c 1211 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1212 va_end(args);
e72dc28c 1213 return SvPVX(sv);
46fc3d4c 1214}
a687059c 1215
46fc3d4c 1216char *
8ac85365 1217mess(const char *pat, va_list *args)
46fc3d4c 1218{
e72dc28c 1219 SV *sv = mess_alloc();
46fc3d4c
PP
1220 static char dgd[] = " during global destruction.\n";
1221
fc36a67e 1222 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1223 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1224 dTHR;
3280af22 1225 if (PL_dirty)
46fc3d4c 1226 sv_catpv(sv, dgd);
2304df62 1227 else {
3280af22 1228 if (PL_curcop->cop_line)
fc36a67e 1229 sv_catpvf(sv, " at %_ line %ld",
3280af22
NIS
1230 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1231 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1232 bool line_mode = (RsSIMPLE(PL_rs) &&
1233 SvLEN(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
46fc3d4c 1234 sv_catpvf(sv, ", <%s> %s %ld",
3280af22 1235 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
46fc3d4c 1236 line_mode ? "line" : "chunk",
3280af22 1237 (long)IoLINES(GvIOp(PL_last_in_gv)));
2304df62 1238 }
46fc3d4c 1239 sv_catpv(sv, ".\n");
a687059c 1240 }
a687059c 1241 }
46fc3d4c 1242 return SvPVX(sv);
a687059c
LW
1243}
1244
36477c24 1245OP *
71be2cbc 1246die(const char* pat, ...)
36477c24 1247{
5dc0d613 1248 dTHR;
36477c24
PP
1249 va_list args;
1250 char *message;
3280af22 1251 int was_in_eval = PL_in_eval;
36477c24
PP
1252 HV *stash;
1253 GV *gv;
1254 CV *cv;
1255
8b73bbec 1256 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1257 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1258 thr, PL_curstack, PL_mainstack));
36477c24 1259
36477c24 1260 va_start(args, pat);
4e6ea2c3 1261 message = pat ? mess(pat, &args) : Nullch;
36477c24
PP
1262 va_end(args);
1263
8b73bbec 1264 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1265 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1266 thr, message, PL_diehook));
3280af22 1267 if (PL_diehook) {
1738f5c4 1268 /* sv_2cv might call croak() */
3280af22 1269 SV *olddiehook = PL_diehook;
1738f5c4 1270 ENTER;
3280af22
NIS
1271 SAVESPTR(PL_diehook);
1272 PL_diehook = Nullsv;
1738f5c4
CS
1273 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1274 LEAVE;
1275 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1276 dSP;
774d564b
PP
1277 SV *msg;
1278
1279 ENTER;
4e6ea2c3
GS
1280 if(message) {
1281 msg = newSVpv(message, 0);
1282 SvREADONLY_on(msg);
1283 SAVEFREESV(msg);
1284 }
1285 else {
1286 msg = ERRSV;
1287 }
1738f5c4 1288
e788e7d3 1289 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1290 PUSHMARK(SP);
1738f5c4
CS
1291 XPUSHs(msg);
1292 PUTBACK;
1293 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1294 POPSTACK;
774d564b 1295 LEAVE;
1738f5c4 1296 }
36477c24
PP
1297 }
1298
3280af22 1299 PL_restartop = die_where(message);
8b73bbec 1300 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1301 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1302 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1303 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1304 JMPENV_JUMP(3);
3280af22 1305 return PL_restartop;
36477c24
PP
1306}
1307
79072805 1308void
71be2cbc 1309croak(const char* pat, ...)
a687059c 1310{
11343788 1311 dTHR;
a687059c 1312 va_list args;
de3bb511 1313 char *message;
748a9306
LW
1314 HV *stash;
1315 GV *gv;
1316 CV *cv;
a687059c 1317
8990e307 1318 va_start(args, pat);
2304df62 1319 message = mess(pat, &args);
a687059c 1320 va_end(args);
8b73bbec 1321 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1322 if (PL_diehook) {
1738f5c4 1323 /* sv_2cv might call croak() */
3280af22 1324 SV *olddiehook = PL_diehook;
1738f5c4 1325 ENTER;
3280af22
NIS
1326 SAVESPTR(PL_diehook);
1327 PL_diehook = Nullsv;
20cec16a 1328 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1329 LEAVE;
1330 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1331 dSP;
774d564b
PP
1332 SV *msg;
1333
1334 ENTER;
1335 msg = newSVpv(message, 0);
1336 SvREADONLY_on(msg);
1337 SAVEFREESV(msg);
20cec16a 1338
e788e7d3 1339 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1340 PUSHMARK(SP);
1738f5c4 1341 XPUSHs(msg);
20cec16a
PP
1342 PUTBACK;
1343 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1344 POPSTACK;
774d564b 1345 LEAVE;
20cec16a 1346 }
748a9306 1347 }
3280af22
NIS
1348 if (PL_in_eval) {
1349 PL_restartop = die_where(message);
6224f72b 1350 JMPENV_JUMP(3);
a0d0e21e 1351 }
760ac839
LW
1352 PerlIO_puts(PerlIO_stderr(),message);
1353 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1354 my_failure_exit();
a687059c
LW
1355}
1356
8990e307 1357void
71be2cbc 1358warn(const char* pat,...)
a687059c
LW
1359{
1360 va_list args;
de3bb511 1361 char *message;
748a9306
LW
1362 HV *stash;
1363 GV *gv;
1364 CV *cv;
a687059c 1365
8990e307 1366 va_start(args, pat);
2304df62 1367 message = mess(pat, &args);
a687059c
LW
1368 va_end(args);
1369
3280af22 1370 if (PL_warnhook) {
1738f5c4 1371 /* sv_2cv might call warn() */
11343788 1372 dTHR;
3280af22 1373 SV *oldwarnhook = PL_warnhook;
1738f5c4 1374 ENTER;
3280af22
NIS
1375 SAVESPTR(PL_warnhook);
1376 PL_warnhook = Nullsv;
20cec16a 1377 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1378 LEAVE;
1379 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1380 dSP;
774d564b
PP
1381 SV *msg;
1382
1383 ENTER;
1384 msg = newSVpv(message, 0);
1385 SvREADONLY_on(msg);
1386 SAVEFREESV(msg);
1387
e788e7d3 1388 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1389 PUSHMARK(SP);
774d564b 1390 XPUSHs(msg);
20cec16a
PP
1391 PUTBACK;
1392 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1393 POPSTACK;
774d564b 1394 LEAVE;
20cec16a
PP
1395 return;
1396 }
748a9306 1397 }
20cec16a 1398 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1399#ifdef LEAKTEST
8c52afec
IZ
1400 DEBUG_L(*message == '!'
1401 ? (xstat(message[1]=='!'
1402 ? (message[2]=='!' ? 2 : 1)
1403 : 0)
1404 , 0)
1405 : 0);
a687059c 1406#endif
20cec16a 1407 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1408}
8d063cd8 1409
599cee73
PM
1410void
1411warner(U32 err, const char* pat,...)
1412{
d008e5eb 1413 dTHR;
599cee73
PM
1414 va_list args;
1415 char *message;
1416 HV *stash;
1417 GV *gv;
1418 CV *cv;
1419
1420 va_start(args, pat);
1421 message = mess(pat, &args);
1422 va_end(args);
1423
1424 if (ckDEAD(err)) {
1425#ifdef USE_THREADS
d008e5eb 1426 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1427#endif /* USE_THREADS */
1428 if (PL_diehook) {
1429 /* sv_2cv might call croak() */
1430 SV *olddiehook = PL_diehook;
1431 ENTER;
1432 SAVESPTR(PL_diehook);
1433 PL_diehook = Nullsv;
1434 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1435 LEAVE;
1436 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1437 dSP;
1438 SV *msg;
1439
1440 ENTER;
1441 msg = newSVpv(message, 0);
1442 SvREADONLY_on(msg);
1443 SAVEFREESV(msg);
1444
1445 PUSHMARK(sp);
1446 XPUSHs(msg);
1447 PUTBACK;
1448 perl_call_sv((SV*)cv, G_DISCARD);
1449
1450 LEAVE;
1451 }
1452 }
1453 if (PL_in_eval) {
1454 PL_restartop = die_where(message);
1455 JMPENV_JUMP(3);
1456 }
1457 PerlIO_puts(PerlIO_stderr(),message);
1458 (void)PerlIO_flush(PerlIO_stderr());
1459 my_failure_exit();
1460
1461 }
1462 else {
1463 if (PL_warnhook) {
1464 /* sv_2cv might call warn() */
1465 dTHR;
1466 SV *oldwarnhook = PL_warnhook;
1467 ENTER;
1468 SAVESPTR(PL_warnhook);
1469 PL_warnhook = Nullsv;
1470 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1471 LEAVE;
1472 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1473 dSP;
1474 SV *msg;
1475
1476 ENTER;
1477 msg = newSVpv(message, 0);
1478 SvREADONLY_on(msg);
1479 SAVEFREESV(msg);
1480
1481 PUSHMARK(sp);
1482 XPUSHs(msg);
1483 PUTBACK;
1484 perl_call_sv((SV*)cv, G_DISCARD);
1485
1486 LEAVE;
1487 return;
1488 }
1489 }
1490 PerlIO_puts(PerlIO_stderr(),message);
1491#ifdef LEAKTEST
1492 DEBUG_L(xstat());
1493#endif
1494 (void)PerlIO_flush(PerlIO_stderr());
1495 }
1496}
1497
a0d0e21e 1498#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1499#ifndef WIN32
8d063cd8 1500void
8ac85365 1501my_setenv(char *nam, char *val)
8d063cd8 1502{
f2517201
GS
1503#ifndef PERL_USE_SAFE_PUTENV
1504 /* most putenv()s leak, so we manipulate environ directly */
79072805 1505 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1506
3280af22 1507 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1508 I32 j;
1509 I32 max;
fe14fcc3
LW
1510 char **tmpenv;
1511
de3bb511 1512 /*SUPPRESS 530*/
fe14fcc3 1513 for (max = i; environ[max]; max++) ;
f2517201
GS
1514 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1515 for (j=0; j<max; j++) { /* copy environment */
1516 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1517 strcpy(tmpenv[j], environ[j]);
1518 }
fe14fcc3
LW
1519 tmpenv[max] = Nullch;
1520 environ = tmpenv; /* tell exec where it is now */
1521 }
a687059c 1522 if (!val) {
f2517201 1523 safesysfree(environ[i]);
a687059c
LW
1524 while (environ[i]) {
1525 environ[i] = environ[i+1];
1526 i++;
1527 }
1528 return;
1529 }
8d063cd8 1530 if (!environ[i]) { /* does not exist yet */
f2517201 1531 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1532 environ[i+1] = Nullch; /* make sure it's null terminated */
1533 }
fe14fcc3 1534 else
f2517201
GS
1535 safesysfree(environ[i]);
1536 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1537
62b28dd9 1538#ifndef MSDOS
a687059c 1539 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1540#else
1541 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1542 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1543 * some utilities and applications may break because they only look
1544 * for upper case strings. (Fixed strupr() bug here.)]
1545 */
1546 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1547 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1548#endif /* MSDOS */
f2517201
GS
1549
1550#else /* PERL_USE_SAFE_PUTENV */
1551 char *new_env;
1552
1553 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1554#ifndef MSDOS
1555 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1556#else
1557 strcpy(new_env,nam); strupr(new_env);
1558 (void)sprintf(new_env + strlen(nam),"=%s",val);
1559#endif
1560 (void)putenv(new_env);
1561#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1562}
1563
3e3baf6d 1564#else /* if WIN32 */
68dc0745
PP
1565
1566void
4e35701f 1567my_setenv(char *nam,char *val)
68dc0745 1568{
3e3baf6d
TB
1569
1570#ifdef USE_WIN32_RTL_ENV
1571
68dc0745
PP
1572 register char *envstr;
1573 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1574 STRLEN vallen;
1575 char *oldstr = environ[setenv_getix(nam)];
1576
1577 /* putenv() has totally broken semantics in both the Borland
1578 * and Microsoft CRTLs. They either store the passed pointer in
1579 * the environment without making a copy, or make a copy and don't
1580 * free it. And on top of that, they dont free() old entries that
1581 * are being replaced/deleted. This means the caller must
1582 * free any old entries somehow, or we end up with a memory
1583 * leak every time my_setenv() is called. One might think
1584 * one could directly manipulate environ[], like the UNIX code
1585 * above, but direct changes to environ are not allowed when
1586 * calling putenv(), since the RTLs maintain an internal
1587 * *copy* of environ[]. Bad, bad, *bad* stink.
1588 * GSAR 97-06-07
1589 */
68dc0745 1590
3e3baf6d
TB
1591 if (!val) {
1592 if (!oldstr)
1593 return;
1594 val = "";
1595 vallen = 0;
1596 }
1597 else
1598 vallen = strlen(val);
f2517201 1599 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1600 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1601 (void)PerlEnv_putenv(envstr);
3e3baf6d 1602 if (oldstr)
f2517201 1603 safesysfree(oldstr);
3e3baf6d 1604#ifdef _MSC_VER
f2517201 1605 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1606#endif
1607
1608#else /* !USE_WIN32_RTL_ENV */
1609
1610 /* The sane way to deal with the environment.
1611 * Has these advantages over putenv() & co.:
1612 * * enables us to store a truly empty value in the
1613 * environment (like in UNIX).
1614 * * we don't have to deal with RTL globals, bugs and leaks.
1615 * * Much faster.
1616 * Why you may want to enable USE_WIN32_RTL_ENV:
1617 * * environ[] and RTL functions will not reflect changes,
1618 * which might be an issue if extensions want to access
1619 * the env. via RTL. This cuts both ways, since RTL will
1620 * not see changes made by extensions that call the Win32
1621 * functions directly, either.
1622 * GSAR 97-06-07
1623 */
1624 SetEnvironmentVariable(nam,val);
1625
1626#endif
1627}
1628
1629#endif /* WIN32 */
1630
1631I32
8ac85365 1632setenv_getix(char *nam)
3e3baf6d
TB
1633{
1634 register I32 i, len = strlen(nam);
1635
1636 for (i = 0; environ[i]; i++) {
1637 if (
1638#ifdef WIN32
1639 strnicmp(environ[i],nam,len) == 0
1640#else
1641 strnEQ(environ[i],nam,len)
1642#endif
1643 && environ[i][len] == '=')
1644 break; /* strnEQ must come first to avoid */
1645 } /* potential SEGV's */
1646 return i;
68dc0745
PP
1647}
1648
a0d0e21e 1649#endif /* !VMS */
378cc40b 1650
16d20bd9 1651#ifdef UNLINK_ALL_VERSIONS
79072805 1652I32
378cc40b
LW
1653unlnk(f) /* unlink all versions of a file */
1654char *f;
1655{
79072805 1656 I32 i;
378cc40b 1657
6ad3d225 1658 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1659 return i ? 0 : -1;
1660}
1661#endif
1662
85e6fe83 1663#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1664char *
4e35701f 1665my_bcopy(register char *from,register char *to,register I32 len)
378cc40b
LW
1666{
1667 char *retval = to;
1668
7c0587c8
LW
1669 if (from - to >= 0) {
1670 while (len--)
1671 *to++ = *from++;
1672 }
1673 else {
1674 to += len;
1675 from += len;
1676 while (len--)
faf8582f 1677 *(--to) = *(--from);
7c0587c8 1678 }
378cc40b
LW
1679 return retval;
1680}
ffed7fef 1681#endif
378cc40b 1682
fc36a67e
PP
1683#ifndef HAS_MEMSET
1684void *
1685my_memset(loc,ch,len)
1686register char *loc;
1687register I32 ch;
1688register I32 len;
1689{
1690 char *retval = loc;
1691
1692 while (len--)
1693 *loc++ = ch;
1694 return retval;
1695}
1696#endif
1697
7c0587c8 1698#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1699char *
7c0587c8 1700my_bzero(loc,len)
378cc40b 1701register char *loc;
79072805 1702register I32 len;
378cc40b
LW
1703{
1704 char *retval = loc;
1705
1706 while (len--)
1707 *loc++ = 0;
1708 return retval;
1709}
1710#endif
7c0587c8 1711
36477c24 1712#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1713I32
7c0587c8 1714my_memcmp(s1,s2,len)
36477c24
PP
1715char *s1;
1716char *s2;
79072805 1717register I32 len;
7c0587c8 1718{
36477c24
PP
1719 register U8 *a = (U8 *)s1;
1720 register U8 *b = (U8 *)s2;
79072805 1721 register I32 tmp;
7c0587c8
LW
1722
1723 while (len--) {
36477c24 1724 if (tmp = *a++ - *b++)
7c0587c8
LW
1725 return tmp;
1726 }
1727 return 0;
1728}
36477c24 1729#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1730
fe14fcc3 1731#ifndef HAS_VPRINTF
a687059c 1732
85e6fe83 1733#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1734char *
1735#else
1736int
1737#endif
1738vsprintf(dest, pat, args)
71be2cbc
PP
1739char *dest;
1740const char *pat;
1741char *args;
a687059c
LW
1742{
1743 FILE fakebuf;
1744
1745 fakebuf._ptr = dest;
1746 fakebuf._cnt = 32767;
35c8bce7
LW
1747#ifndef _IOSTRG
1748#define _IOSTRG 0
1749#endif
a687059c
LW
1750 fakebuf._flag = _IOWRT|_IOSTRG;
1751 _doprnt(pat, args, &fakebuf); /* what a kludge */
1752 (void)putc('\0', &fakebuf);
85e6fe83 1753#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1754 return(dest);
1755#else
1756 return 0; /* perl doesn't use return value */
1757#endif
1758}
1759
fe14fcc3 1760#endif /* HAS_VPRINTF */
a687059c
LW
1761
1762#ifdef MYSWAP
ffed7fef 1763#if BYTEORDER != 0x4321
a687059c 1764short
748a9306 1765my_swap(short s)
a687059c
LW
1766{
1767#if (BYTEORDER & 1) == 0
1768 short result;
1769
1770 result = ((s & 255) << 8) + ((s >> 8) & 255);
1771 return result;
1772#else
1773 return s;
1774#endif
1775}
1776
1777long
748a9306 1778my_htonl(long l)
a687059c
LW
1779{
1780 union {
1781 long result;
ffed7fef 1782 char c[sizeof(long)];
a687059c
LW
1783 } u;
1784
ffed7fef 1785#if BYTEORDER == 0x1234
a687059c
LW
1786 u.c[0] = (l >> 24) & 255;
1787 u.c[1] = (l >> 16) & 255;
1788 u.c[2] = (l >> 8) & 255;
1789 u.c[3] = l & 255;
1790 return u.result;
1791#else
ffed7fef 1792#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1793 croak("Unknown BYTEORDER\n");
a687059c 1794#else
79072805
LW
1795 register I32 o;
1796 register I32 s;
a687059c 1797
ffed7fef
LW
1798 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1799 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1800 }
1801 return u.result;
1802#endif
1803#endif
1804}
1805
1806long
748a9306 1807my_ntohl(long l)
a687059c
LW
1808{
1809 union {
1810 long l;
ffed7fef 1811 char c[sizeof(long)];
a687059c
LW
1812 } u;
1813
ffed7fef 1814#if BYTEORDER == 0x1234
a687059c
LW
1815 u.c[0] = (l >> 24) & 255;
1816 u.c[1] = (l >> 16) & 255;
1817 u.c[2] = (l >> 8) & 255;
1818 u.c[3] = l & 255;
1819 return u.l;
1820#else
ffed7fef 1821#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1822 croak("Unknown BYTEORDER\n");
a687059c 1823#else
79072805
LW
1824 register I32 o;
1825 register I32 s;
a687059c
LW
1826
1827 u.l = l;
1828 l = 0;
ffed7fef
LW
1829 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1830 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1831 }
1832 return l;
1833#endif
1834#endif
1835}
1836
ffed7fef 1837#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1838#endif /* MYSWAP */
1839
1840/*
1841 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1842 * If these functions are defined,
1843 * the BYTEORDER is neither 0x1234 nor 0x4321.
1844 * However, this is not assumed.
1845 * -DWS
1846 */
1847
1848#define HTOV(name,type) \
1849 type \
1850 name (n) \
1851 register type n; \
1852 { \
1853 union { \
1854 type value; \
1855 char c[sizeof(type)]; \
1856 } u; \
79072805
LW
1857 register I32 i; \
1858 register I32 s; \
988174c1
LW
1859 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1860 u.c[i] = (n >> s) & 0xFF; \
1861 } \
1862 return u.value; \
1863 }
1864
1865#define VTOH(name,type) \
1866 type \
1867 name (n) \
1868 register type n; \
1869 { \
1870 union { \
1871 type value; \
1872 char c[sizeof(type)]; \
1873 } u; \
79072805
LW
1874 register I32 i; \
1875 register I32 s; \
988174c1
LW
1876 u.value = n; \
1877 n = 0; \
1878 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1879 n += (u.c[i] & 0xFF) << s; \
1880 } \
1881 return n; \
1882 }
1883
1884#if defined(HAS_HTOVS) && !defined(htovs)
1885HTOV(htovs,short)
1886#endif
1887#if defined(HAS_HTOVL) && !defined(htovl)
1888HTOV(htovl,long)
1889#endif
1890#if defined(HAS_VTOHS) && !defined(vtohs)
1891VTOH(vtohs,short)
1892#endif
1893#if defined(HAS_VTOHL) && !defined(vtohl)
1894VTOH(vtohl,long)
1895#endif
a687059c 1896
5f05dabc 1897 /* VMS' my_popen() is in VMS.c, same with OS/2. */
092bebab 1898#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
760ac839 1899PerlIO *
8ac85365 1900my_popen(char *cmd, char *mode)
a687059c
LW
1901{
1902 int p[2];
8ac85365 1903 register I32 This, that;
79072805
LW
1904 register I32 pid;
1905 SV *sv;
1738f5c4 1906 I32 doexec = strNE(cmd,"-");
a687059c 1907
ddcf38b7
IZ
1908#ifdef OS2
1909 if (doexec) {
1910 return my_syspopen(cmd,mode);
1911 }
1912#endif
8ac85365
NIS
1913 This = (*mode == 'w');
1914 that = !This;
3280af22 1915 if (doexec && PL_tainting) {
bbce6d69
PP
1916 taint_env();
1917 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1918 }
c2267164
IZ
1919 if (PerlProc_pipe(p) < 0)
1920 return Nullfp;
a687059c
LW
1921 while ((pid = (doexec?vfork():fork())) < 0) {
1922 if (errno != EAGAIN) {
6ad3d225 1923 PerlLIO_close(p[This]);
a687059c 1924 if (!doexec)
463ee0b2 1925 croak("Can't fork");
a687059c
LW
1926 return Nullfp;
1927 }
1928 sleep(5);
1929 }
1930 if (pid == 0) {
79072805
LW
1931 GV* tmpgv;
1932
30ac6d9b
GS
1933#undef THIS
1934#undef THAT
a687059c 1935#define THIS that
8ac85365 1936#define THAT This
6ad3d225 1937 PerlLIO_close(p[THAT]);
a687059c 1938 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
1939 PerlLIO_dup2(p[THIS], *mode == 'r');
1940 PerlLIO_close(p[THIS]);
a687059c
LW
1941 }
1942 if (doexec) {
a0d0e21e 1943#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1944 int fd;
1945
1946#ifndef NOFILE
1947#define NOFILE 20
1948#endif
6b88bc9c 1949 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
6ad3d225 1950 PerlLIO_close(fd);
ae986130 1951#endif
a687059c 1952 do_exec(cmd); /* may or may not use the shell */
6ad3d225 1953 PerlProc__exit(1);
a687059c 1954 }
de3bb511 1955 /*SUPPRESS 560*/
85e6fe83 1956 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1957 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS
1958 PL_forkprocess = 0;
1959 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
1960 return Nullfp;
1961#undef THIS
1962#undef THAT
1963 }
62b28dd9 1964 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 1965 PerlLIO_close(p[that]);
8ac85365 1966 if (p[that] < p[This]) {
6ad3d225
GS
1967 PerlLIO_dup2(p[This], p[that]);
1968 PerlLIO_close(p[This]);
8ac85365 1969 p[This] = p[that];
62b28dd9 1970 }
3280af22 1971 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 1972 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1973 SvIVX(sv) = pid;
3280af22 1974 PL_forkprocess = pid;
8ac85365 1975 return PerlIO_fdopen(p[This], mode);
a687059c 1976}
7c0587c8 1977#else
55497cff 1978#if defined(atarist) || defined(DJGPP)
7c0587c8 1979FILE *popen();
760ac839 1980PerlIO *
79072805 1981my_popen(cmd,mode)
7c0587c8
LW
1982char *cmd;
1983char *mode;
1984{
760ac839 1985 /* Needs work for PerlIO ! */
55497cff
PP
1986 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1987 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1988}
1989#endif
1990
1991#endif /* !DOSISH */
a687059c 1992
748a9306 1993#ifdef DUMP_FDS
35ff7856
GS
1994void
1995dump_fds(char *s)
ae986130
LW
1996{
1997 int fd;
1998 struct stat tmpstatbuf;
1999
760ac839 2000 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2001 for (fd = 0; fd < 32; fd++) {
6ad3d225 2002 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2003 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2004 }
760ac839 2005 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2006}
35ff7856 2007#endif /* DUMP_FDS */
ae986130 2008
fe14fcc3 2009#ifndef HAS_DUP2
fec02dd3 2010int
a687059c
LW
2011dup2(oldfd,newfd)
2012int oldfd;
2013int newfd;
2014{
a0d0e21e 2015#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2016 if (oldfd == newfd)
2017 return oldfd;
6ad3d225 2018 PerlLIO_close(newfd);
fec02dd3 2019 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2020#else
fc36a67e
PP
2021#define DUP2_MAX_FDS 256
2022 int fdtmp[DUP2_MAX_FDS];
79072805 2023 I32 fdx = 0;
ae986130
LW
2024 int fd;
2025
fe14fcc3 2026 if (oldfd == newfd)
fec02dd3 2027 return oldfd;
6ad3d225 2028 PerlLIO_close(newfd);
fc36a67e 2029 /* good enough for low fd's... */
6ad3d225 2030 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2031 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2032 PerlLIO_close(fd);
fc36a67e
PP
2033 fd = -1;
2034 break;
2035 }
ae986130 2036 fdtmp[fdx++] = fd;
fc36a67e 2037 }
ae986130 2038 while (fdx > 0)
6ad3d225 2039 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2040 return fd;
62b28dd9 2041#endif
a687059c
LW
2042}
2043#endif
2044
ff68c719
PP
2045
2046#ifdef HAS_SIGACTION
2047
2048Sighandler_t
8ac85365 2049rsignal(int signo, Sighandler_t handler)
ff68c719
PP
2050{
2051 struct sigaction act, oact;
2052
2053 act.sa_handler = handler;
2054 sigemptyset(&act.sa_mask);
2055 act.sa_flags = 0;
2056#ifdef SA_RESTART
2057 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2058#endif
85264bed
CS
2059#ifdef SA_NOCLDWAIT
2060 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2061 act.sa_flags |= SA_NOCLDWAIT;
2062#endif
ff68c719 2063 if (sigaction(signo, &act, &oact) == -1)
36477c24 2064 return SIG_ERR;
ff68c719 2065 else
36477c24 2066 return oact.sa_handler;
ff68c719
PP
2067}
2068
2069Sighandler_t
8ac85365 2070rsignal_state(int signo)
ff68c719
PP
2071{
2072 struct sigaction oact;
2073
2074 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2075 return SIG_ERR;
2076 else
2077 return oact.sa_handler;
2078}
2079
2080int
8ac85365 2081rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2082{
2083 struct sigaction act;
2084
2085 act.sa_handler = handler;
2086 sigemptyset(&act.sa_mask);
2087 act.sa_flags = 0;
2088#ifdef SA_RESTART
2089 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2090#endif
85264bed
CS
2091#ifdef SA_NOCLDWAIT
2092 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2093 act.sa_flags |= SA_NOCLDWAIT;
2094#endif
ff68c719
PP
2095 return sigaction(signo, &act, save);
2096}
2097
2098int
8ac85365 2099rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
2100{
2101 return sigaction(signo, save, (struct sigaction *)NULL);
2102}
2103
2104#else /* !HAS_SIGACTION */
2105
2106Sighandler_t
4e35701f 2107rsignal(int signo, Sighandler_t handler)
ff68c719 2108{
6ad3d225 2109 return PerlProc_signal(signo, handler);
ff68c719
PP
2110}
2111
2112static int sig_trapped;
2113
2114static
2115Signal_t
4e35701f 2116sig_trap(int signo)
ff68c719
PP
2117{
2118 sig_trapped++;
2119}
2120
2121Sighandler_t
4e35701f 2122rsignal_state(int signo)
ff68c719
PP
2123{
2124 Sighandler_t oldsig;
2125
2126 sig_trapped = 0;
6ad3d225
GS
2127 oldsig = PerlProc_signal(signo, sig_trap);
2128 PerlProc_signal(signo, oldsig);
ff68c719 2129 if (sig_trapped)
6ad3d225 2130 PerlProc_kill(getpid(), signo);
ff68c719
PP
2131 return oldsig;
2132}
2133
2134int
4e35701f 2135rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2136{
6ad3d225 2137 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2138 return (*save == SIG_ERR) ? -1 : 0;
2139}
2140
2141int
4e35701f 2142rsignal_restore(int signo, Sigsave_t *save)
ff68c719 2143{
6ad3d225 2144 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2145}
2146
2147#endif /* !HAS_SIGACTION */
2148
5f05dabc 2149 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
092bebab 2150#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
79072805 2151I32
6acef3b7 2152my_pclose(PerlIO *ptr)
a687059c 2153{
ff68c719 2154 Sigsave_t hstat, istat, qstat;
a687059c 2155 int status;
a0d0e21e 2156 SV **svp;
20188a90 2157 int pid;
1d3434b8 2158 int pid2;
03136e13
CS
2159 bool close_failed;
2160 int saved_errno;
2161#ifdef VMS
2162 int saved_vaxc_errno;
2163#endif
22fae026
TM
2164#ifdef WIN32
2165 int saved_win32_errno;
2166#endif
a687059c 2167
3280af22 2168 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2169 pid = (int)SvIVX(*svp);
a0d0e21e 2170 SvREFCNT_dec(*svp);
3280af22 2171 *svp = &PL_sv_undef;
ddcf38b7
IZ
2172#ifdef OS2
2173 if (pid == -1) { /* Opened by popen. */
2174 return my_syspclose(ptr);
2175 }
2176#endif
03136e13
CS
2177 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2178 saved_errno = errno;
2179#ifdef VMS
2180 saved_vaxc_errno = vaxc$errno;
2181#endif
22fae026
TM
2182#ifdef WIN32
2183 saved_win32_errno = GetLastError();
2184#endif
03136e13 2185 }
7c0587c8 2186#ifdef UTS
6ad3d225 2187 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2188#endif
ff68c719
PP
2189 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2190 rsignal_save(SIGINT, SIG_IGN, &istat);
2191 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2192 do {
1d3434b8
GS
2193 pid2 = wait4pid(pid, &status, 0);
2194 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2195 rsignal_restore(SIGHUP, &hstat);
2196 rsignal_restore(SIGINT, &istat);
2197 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2198 if (close_failed) {
2199 SETERRNO(saved_errno, saved_vaxc_errno);
2200 return -1;
2201 }
1d3434b8 2202 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2203}
4633a7c4
LW
2204#endif /* !DOSISH */
2205
2d7a9237 2206#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2207I32
8ac85365 2208wait4pid(int pid, int *statusp, int flags)
20188a90 2209{
79072805
LW
2210 SV *sv;
2211 SV** svp;
fc36a67e 2212 char spid[TYPE_CHARS(int)];
20188a90
LW
2213
2214 if (!pid)
2215 return -1;
20188a90
LW
2216 if (pid > 0) {
2217 sprintf(spid, "%d", pid);
3280af22
NIS
2218 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2219 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2220 *statusp = SvIVX(*svp);
3280af22 2221 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2222 return pid;
2223 }
2224 }
2225 else {
79072805 2226 HE *entry;
20188a90 2227
3280af22
NIS
2228 hv_iterinit(PL_pidstatus);
2229 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2230 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2231 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2232 *statusp = SvIVX(sv);
20188a90 2233 sprintf(spid, "%d", pid);
3280af22 2234 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2235 return pid;
2236 }
2237 }
79072805 2238#ifdef HAS_WAITPID
367f3c24
IZ
2239# ifdef HAS_WAITPID_RUNTIME
2240 if (!HAS_WAITPID_RUNTIME)
2241 goto hard_way;
2242# endif
f55ee38a 2243 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2244#endif
2245#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2246 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2247#endif
2248#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2249 hard_way:
a0d0e21e
LW
2250 {
2251 I32 result;
2252 if (flags)
2253 croak("Can't do waitpid with flags");
2254 else {
76e3520e 2255 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2256 pidgone(result,*statusp);
2257 if (result < 0)
2258 *statusp = -1;
2259 }
2260 return result;
a687059c
LW
2261 }
2262#endif
a687059c 2263}
2d7a9237 2264#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2265
7c0587c8 2266void
de3bb511 2267/*SUPPRESS 590*/
8ac85365 2268pidgone(int pid, int status)
a687059c 2269{
79072805 2270 register SV *sv;
fc36a67e 2271 char spid[TYPE_CHARS(int)];
a687059c 2272
20188a90 2273 sprintf(spid, "%d", pid);
3280af22 2274 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2275 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2276 SvIVX(sv) = status;
20188a90 2277 return;
a687059c
LW
2278}
2279
55497cff 2280#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2281int pclose();
ddcf38b7
IZ
2282#ifdef HAS_FORK
2283int /* Cannot prototype with I32
2284 in os2ish.h. */
2285my_syspclose(ptr)
2286#else
79072805
LW
2287I32
2288my_pclose(ptr)
ddcf38b7 2289#endif
760ac839 2290PerlIO *ptr;
a687059c 2291{
760ac839
LW
2292 /* Needs work for PerlIO ! */
2293 FILE *f = PerlIO_findFILE(ptr);
2294 I32 result = pclose(f);
2295 PerlIO_releaseFILE(ptr,f);
2296 return result;
a687059c 2297}
7c0587c8 2298#endif
9f68db38
LW
2299
2300void
8ac85365 2301repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2302{
79072805 2303 register I32 todo;
9f68db38
LW
2304 register char *frombase = from;
2305
2306 if (len == 1) {
5926133d 2307 register char c = *from;
9f68db38 2308 while (count-- > 0)
5926133d 2309 *to++ = c;
9f68db38
LW
2310 return;
2311 }
2312 while (count-- > 0) {
2313 for (todo = len; todo > 0; todo--) {
2314 *to++ = *from++;
2315 }
2316 from = frombase;
2317 }
2318}
0f85fab0 2319
463ee0b2 2320U32
22c35a8c 2321cast_ulong(double f)
0f85fab0
LW
2322{
2323 long along;
2324
27e2fb84 2325#if CASTFLAGS & 2
34de22dd
LW
2326# define BIGDOUBLE 2147483648.0
2327 if (f >= BIGDOUBLE)
2328 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2329#endif
0f85fab0
LW
2330 if (f >= 0.0)
2331 return (unsigned long)f;
2332 along = (long)f;
2333 return (unsigned long)along;
2334}
ed6116ce 2335# undef BIGDOUBLE
5d94fbed 2336
5d94fbed
AD
2337/* Unfortunately, on some systems the cast_uv() function doesn't
2338 work with the system-supplied definition of ULONG_MAX. The
2339 comparison (f >= ULONG_MAX) always comes out true. It must be a
2340 problem with the compiler constant folding.
2341
2342 In any case, this workaround should be fine on any two's complement
2343 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2344 ccflags.
2345 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2346*/
1eb770ff
PP
2347
2348/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2349 of LONG_(MIN/MAX).
2350 -- Kenneth Albanowski <kjahds@kjahds.com>
2351*/
2352
20cec16a
PP
2353#ifndef MY_UV_MAX
2354# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2355#endif
2356
ed6116ce 2357I32
22c35a8c 2358cast_i32(double f)
ed6116ce 2359{
20cec16a
PP
2360 if (f >= I32_MAX)
2361 return (I32) I32_MAX;
2362 if (f <= I32_MIN)
2363 return (I32) I32_MIN;
ed6116ce
LW
2364 return (I32) f;
2365}
a0d0e21e
LW
2366
2367IV
22c35a8c 2368cast_iv(double f)
a0d0e21e 2369{
20cec16a
PP
2370 if (f >= IV_MAX)
2371 return (IV) IV_MAX;
2372 if (f <= IV_MIN)
2373 return (IV) IV_MIN;
a0d0e21e
LW
2374 return (IV) f;
2375}
5d94fbed
AD
2376
2377UV
22c35a8c 2378cast_uv(double f)
5d94fbed 2379{
20cec16a
PP
2380 if (f >= MY_UV_MAX)
2381 return (UV) MY_UV_MAX;
5d94fbed
AD
2382 return (UV) f;
2383}
2384
fe14fcc3 2385#ifndef HAS_RENAME
79072805 2386I32
22c35a8c 2387same_dirent(char *a, char *b)
62b28dd9 2388{
93a17b20
LW
2389 char *fa = strrchr(a,'/');
2390 char *fb = strrchr(b,'/');
62b28dd9
LW
2391 struct stat tmpstatbuf1;
2392 struct stat tmpstatbuf2;
46fc3d4c 2393 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2394
2395 if (fa)
2396 fa++;
2397 else
2398 fa = a;
2399 if (fb)
2400 fb++;
2401 else
2402 fb = b;
2403 if (strNE(a,b))
2404 return FALSE;
2405 if (fa == a)
46fc3d4c 2406 sv_setpv(tmpsv, ".");
62b28dd9 2407 else
46fc3d4c 2408 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2409 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2410 return FALSE;
2411 if (fb == b)
46fc3d4c 2412 sv_setpv(tmpsv, ".");
62b28dd9 2413 else
46fc3d4c 2414 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2415 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2416 return FALSE;
2417 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2418 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2419}
fe14fcc3
LW
2420#endif /* !HAS_RENAME */
2421
55497cff 2422UV
4f19785b
WSI
2423scan_bin(char *start, I32 len, I32 *retlen)
2424{
2425 register char *s = start;
2426 register UV retval = 0;
2427 bool overflowed = FALSE;
2428 while (len && *s >= '0' && *s <= '1') {
2429 register UV n = retval << 1;
2430 if (!overflowed && (n >> 1) != retval) {
2431 warn("Integer overflow in binary number");
2432 overflowed = TRUE;
2433 }
2434 retval = n | (*s++ - '0');
2435 len--;
2436 }
2437 if (len && (*s >= '2' || *s <= '9')) {
2438 dTHR;
2439 if (ckWARN(WARN_UNSAFE))
2440 warner(WARN_UNSAFE, "Illegal binary digit ignored");
2441 }
2442 *retlen = s - start;
2443 return retval;
2444}
2445UV
8ac85365 2446scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2447{
2448 register char *s = start;
55497cff
PP
2449 register UV retval = 0;
2450 bool overflowed = FALSE;
fe14fcc3 2451
748a9306 2452 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2453 register UV n = retval << 3;
2454 if (!overflowed && (n >> 3) != retval) {
2455 warn("Integer overflow in octal number");
2456 overflowed = TRUE;
2457 }
2458 retval = n | (*s++ - '0');
748a9306 2459 len--;
fe14fcc3 2460 }
d008e5eb
GS
2461 if (len && (*s == '8' || *s == '9')) {
2462 dTHR;
2463 if (ckWARN(WARN_OCTAL))
2464 warner(WARN_OCTAL, "Illegal octal digit ignored");
2465 }
fe14fcc3
LW
2466 *retlen = s - start;
2467 return retval;
2468}
2469
71be2cbc 2470UV
8ac85365 2471scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2472{
2473 register char *s = start;
55497cff
PP
2474 register UV retval = 0;
2475 bool overflowed = FALSE;
6ff81951 2476 char *tmp = s;
a0ed51b3 2477 register UV n;
fe14fcc3 2478
a0ed51b3
LW
2479 while (len-- && *s) {
2480 tmp = strchr((char *) PL_hexdigit, *s++);
2481 if (!tmp) {
e3fdf988 2482 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
a0ed51b3
LW
2483 continue;
2484 else {
d008e5eb 2485 dTHR;
a0ed51b3 2486 --s;
599cee73
PM
2487 if (ckWARN(WARN_UNSAFE))
2488 warner(WARN_UNSAFE,"Illegal hex digit ignored");
a0ed51b3
LW
2489 break;
2490 }
2491 }
2492 n = retval << 4;
55497cff
PP
2493 if (!overflowed && (n >> 4) != retval) {
2494 warn("Integer overflow in hex number");
2495 overflowed = TRUE;
2496 }
3280af22 2497 retval = n | ((tmp - PL_hexdigit) & 15);
6ff81951 2498 }
fe14fcc3
LW
2499 *retlen = s - start;
2500 return retval;
2501}
760ac839 2502
491527d0
GS
2503char*
2504find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags)
2505{
2506 dTHR;
2507 char *xfound = Nullch;
2508 char *xfailed = Nullch;
0f31cffe 2509 char tmpbuf[MAXPATHLEN];
491527d0
GS
2510 register char *s;
2511 I32 len;
2512 int retval;
2513#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2514# define SEARCH_EXTS ".bat", ".cmd", NULL
2515# define MAX_EXT_LEN 4
2516#endif
2517#ifdef OS2
2518# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2519# define MAX_EXT_LEN 4
2520#endif
2521#ifdef VMS
2522# define SEARCH_EXTS ".pl", ".com", NULL
2523# define MAX_EXT_LEN 4
2524#endif
2525 /* additional extensions to try in each dir if scriptname not found */
2526#ifdef SEARCH_EXTS
2527 char *exts[] = { SEARCH_EXTS };
2528 char **ext = search_ext ? search_ext : exts;
2529 int extidx = 0, i = 0;
2530 char *curext = Nullch;
2531#else
2532# define MAX_EXT_LEN 0
2533#endif
2534
2535 /*
2536 * If dosearch is true and if scriptname does not contain path
2537 * delimiters, search the PATH for scriptname.
2538 *
2539 * If SEARCH_EXTS is also defined, will look for each
2540 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2541 * while searching the PATH.
2542 *
2543 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2544 * proceeds as follows:
2545 * If DOSISH or VMSISH:
2546 * + look for ./scriptname{,.foo,.bar}
2547 * + search the PATH for scriptname{,.foo,.bar}
2548 *
2549 * If !DOSISH:
2550 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2551 * this will not look in '.' if it's not in the PATH)
2552 */
84486fc6 2553 tmpbuf[0] = '\0';
491527d0
GS
2554
2555#ifdef VMS
2556# ifdef ALWAYS_DEFTYPES
2557 len = strlen(scriptname);
2558 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2559 int hasdir, idx = 0, deftypes = 1;
2560 bool seen_dot = 1;
2561
2562 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2563# else
2564 if (dosearch) {
2565 int hasdir, idx = 0, deftypes = 1;
2566 bool seen_dot = 1;
2567
2568 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2569# endif
2570 /* The first time through, just add SEARCH_EXTS to whatever we
2571 * already have, so we can check for default file types. */
2572 while (deftypes ||
84486fc6 2573 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
2574 {
2575 if (deftypes) {
2576 deftypes = 0;
84486fc6 2577 *tmpbuf = '\0';
491527d0 2578 }
84486fc6
GS
2579 if ((strlen(tmpbuf) + strlen(scriptname)
2580 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2581 continue; /* don't search dir with too-long name */
84486fc6 2582 strcat(tmpbuf, scriptname);
491527d0
GS
2583#else /* !VMS */
2584
2585#ifdef DOSISH
2586 if (strEQ(scriptname, "-"))
2587 dosearch = 0;
2588 if (dosearch) { /* Look in '.' first. */
2589 char *cur = scriptname;
2590#ifdef SEARCH_EXTS
2591 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2592 while (ext[i])
2593 if (strEQ(ext[i++],curext)) {
2594 extidx = -1; /* already has an ext */
2595 break;
2596 }
2597 do {
2598#endif
2599 DEBUG_p(PerlIO_printf(Perl_debug_log,
2600 "Looking for %s\n",cur));
017f25f1
IZ
2601 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2602 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
2603 dosearch = 0;
2604 scriptname = cur;
2605#ifdef SEARCH_EXTS
2606 break;
2607#endif
2608 }
2609#ifdef SEARCH_EXTS
2610 if (cur == scriptname) {
2611 len = strlen(scriptname);
84486fc6 2612 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2613 break;
84486fc6 2614 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
2615 }
2616 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2617 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
2618#endif
2619 }
2620#endif
2621
2622 if (dosearch && !strchr(scriptname, '/')
2623#ifdef DOSISH
2624 && !strchr(scriptname, '\\')
2625#endif
2626 && (s = PerlEnv_getenv("PATH"))) {
2627 bool seen_dot = 0;
2628
3280af22
NIS
2629 PL_bufend = s + strlen(s);
2630 while (s < PL_bufend) {
491527d0
GS
2631#if defined(atarist) || defined(DOSISH)
2632 for (len = 0; *s
2633# ifdef atarist
2634 && *s != ','
2635# endif
2636 && *s != ';'; len++, s++) {
84486fc6
GS
2637 if (len < sizeof tmpbuf)
2638 tmpbuf[len] = *s;
491527d0 2639 }
84486fc6
GS
2640 if (len < sizeof tmpbuf)
2641 tmpbuf[len] = '\0';
491527d0 2642#else /* ! (atarist || DOSISH) */
3280af22 2643 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
2644 ':',
2645 &len);
2646#endif /* ! (atarist || DOSISH) */
3280af22 2647 if (s < PL_bufend)
491527d0 2648 s++;
84486fc6 2649 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
2650 continue; /* don't search dir with too-long name */
2651 if (len
61ae2fbf 2652#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
2653 && tmpbuf[len - 1] != '/'
2654 && tmpbuf[len - 1] != '\\'
491527d0
GS
2655#endif
2656 )
84486fc6
GS
2657 tmpbuf[len++] = '/';
2658 if (len == 2 && tmpbuf[0] == '.')
491527d0 2659 seen_dot = 1;
84486fc6 2660 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
2661#endif /* !VMS */
2662
2663#ifdef SEARCH_EXTS
84486fc6 2664 len = strlen(tmpbuf);
491527d0
GS
2665 if (extidx > 0) /* reset after previous loop */
2666 extidx = 0;
2667 do {
2668#endif
84486fc6 2669 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 2670 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
2671 if (S_ISDIR(PL_statbuf.st_mode)) {
2672 retval = -1;
2673 }
491527d0
GS
2674#ifdef SEARCH_EXTS
2675 } while ( retval < 0 /* not there */
2676 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 2677 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
2678 );
2679#endif
2680 if (retval < 0)
2681 continue;
3280af22
NIS
2682 if (S_ISREG(PL_statbuf.st_mode)
2683 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 2684#ifndef DOSISH
3280af22 2685 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
2686#endif
2687 )
2688 {
84486fc6 2689 xfound = tmpbuf; /* bingo! */
491527d0
GS
2690 break;
2691 }
2692 if (!xfailed)
84486fc6 2693 xfailed = savepv(tmpbuf);
491527d0
GS
2694 }
2695#ifndef DOSISH
017f25f1
IZ
2696 if (!xfound && !seen_dot && !xfailed &&
2697 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
2698 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
2699#endif
2700 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
2701 if (!xfound) {
2702 if (flags & 1) { /* do or die? */
2703 croak("Can't %s %s%s%s",
2704 (xfailed ? "execute" : "find"),
2705 (xfailed ? xfailed : scriptname),
2706 (xfailed ? "" : " on PATH"),
2707 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2708 }
2709 scriptname = Nullch;
2710 }
491527d0
GS
2711 if (xfailed)
2712 Safefree(xfailed);
2713 scriptname = xfound;
2714 }
9ccb31f9 2715 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
2716}
2717
2718
11343788 2719#ifdef USE_THREADS
12ca11f6
MB
2720#ifdef FAKE_THREADS
2721/* Very simplistic scheduler for now */
2722void
2723schedule(void)
2724{
c7848ba1 2725 thr = thr->i.next_run;
12ca11f6
MB
2726}
2727
2728void
22c35a8c 2729perl_cond_init(perl_cond *cp)
12ca11f6
MB
2730{
2731 *cp = 0;
2732}
2733
2734void
22c35a8c 2735perl_cond_signal(perl_cond *cp)
12ca11f6 2736{
51dd5992 2737 perl_os_thread t;
12ca11f6
MB
2738 perl_cond cond = *cp;
2739
2740 if (!cond)
2741 return;
2742 t = cond->thread;
2743 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2744 t->i.next_run = thr->i.next_run;
2745 thr->i.next_run->i.prev_run = t;
2746 t->i.prev_run = thr;
2747 thr->i.next_run = t;
2748 thr->i.wait_queue = 0;
12ca11f6
MB
2749 /* Remove from the wait queue */
2750 *cp = cond->next;
2751 Safefree(cond);
2752}
2753
2754void
22c35a8c 2755perl_cond_broadcast(perl_cond *cp)
12ca11f6 2756{
51dd5992 2757 perl_os_thread t;
12ca11f6
MB
2758 perl_cond cond, cond_next;
2759
2760 for (cond = *cp; cond; cond = cond_next) {
2761 t = cond->thread;
2762 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2763 t->i.next_run = thr->i.next_run;
2764 thr->i.next_run->i.prev_run = t;
2765 t->i.prev_run = thr;
2766 thr->i.next_run = t;
2767 thr->i.wait_queue = 0;
12ca11f6
MB
2768 /* Remove from the wait queue */
2769 cond_next = cond->next;
2770 Safefree(cond);
2771 }
2772 *cp = 0;
2773}
2774
2775void
22c35a8c 2776perl_cond_wait(perl_cond *cp)
12ca11f6
MB
2777{
2778 perl_cond cond;
2779
c7848ba1 2780 if (thr->i.next_run == thr)
12ca11f6
MB
2781 croak("panic: perl_cond_wait called by last runnable thread");
2782
0f15f207 2783 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2784 cond->thread = thr;
2785 cond->next = *cp;
2786 *cp = cond;
c7848ba1 2787 thr->i.wait_queue = cond;
12ca11f6 2788 /* Remove ourselves from runnable queue */
c7848ba1
MB
2789 thr->i.next_run->i.prev_run = thr->i.prev_run;
2790 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2791}
2792#endif /* FAKE_THREADS */
2793
0d85d877 2794#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 2795struct perl_thread *
11343788
MB
2796getTHR _((void))
2797{
2798 pthread_addr_t t;
2799
6b88bc9c 2800 if (pthread_getspecific(PL_thr_key, &t))
11343788 2801 croak("panic: pthread_getspecific");
52e1cb5e 2802 return (struct perl_thread *) t;
11343788 2803}
0d85d877 2804#endif
f93b4edd
MB
2805
2806MAGIC *
8ac85365 2807condpair_magic(SV *sv)
f93b4edd
MB
2808{
2809 MAGIC *mg;
2810
2811 SvUPGRADE(sv, SVt_PVMG);
2812 mg = mg_find(sv, 'm');
2813 if (!mg) {
2814 condpair_t *cp;
2815
2816 New(53, cp, 1, condpair_t);
2817 MUTEX_INIT(&cp->mutex);
2818 COND_INIT(&cp->owner_cond);
2819 COND_INIT(&cp->cond);
2820 cp->owner = 0;
940cb80d 2821 LOCK_SV_MUTEX;
f93b4edd
MB
2822 mg = mg_find(sv, 'm');
2823 if (mg) {
2824 /* someone else beat us to initialising it */
940cb80d 2825 UNLOCK_SV_MUTEX;
f93b4edd
MB
2826 MUTEX_DESTROY(&cp->mutex);
2827 COND_DESTROY(&cp->owner_cond);
2828 COND_DESTROY(&cp->cond);
2829 Safefree(cp);
2830 }
2831 else {
2832 sv_magic(sv, Nullsv, 'm', 0, 0);
2833 mg = SvMAGIC(sv);
2834 mg->mg_ptr = (char *)cp;
565764a8 2835 mg->mg_len = sizeof(cp);
940cb80d 2836 UNLOCK_SV_MUTEX;
8b73bbec 2837 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2838 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2839 }
2840 }
2841 return mg;
2842}
a863c7d1
MB
2843
2844/*
199100c8
MB
2845 * Make a new perl thread structure using t as a prototype. Some of the
2846 * fields for the new thread are copied from the prototype thread, t,
2847 * so t should not be running in perl at the time this function is
2848 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2849 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 2850 */
52e1cb5e
JH
2851struct perl_thread *
2852new_struct_thread(struct perl_thread *t)
a863c7d1 2853{
52e1cb5e 2854 struct perl_thread *thr;
a863c7d1 2855 SV *sv;
199100c8
MB
2856 SV **svp;
2857 I32 i;
2858
2859 sv = newSVpv("", 0);
52e1cb5e
JH
2860 SvGROW(sv, sizeof(struct perl_thread) + 1);
2861 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 2862 thr = (Thread) SvPVX(sv);
949ced2d 2863#ifdef DEBUGGING
52e1cb5e 2864 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
2865 PL_markstack = 0;
2866 PL_scopestack = 0;
2867 PL_savestack = 0;
2868 PL_retstack = 0;
2869 PL_dirty = 0;
2870 PL_localizing = 0;
949ced2d
GS
2871 Zero(&PL_hv_fetch_ent_mh, 1, HE);
2872#else
2873 Zero(thr, 1, struct perl_thread);
2874#endif
199100c8
MB
2875
2876 thr->oursv = sv;
d55594ae 2877 init_stacks(ARGS);
a863c7d1 2878
533c011a 2879 PL_curcop = &PL_compiling;
199100c8 2880 thr->cvcache = newHV();
54b9620d 2881 thr->threadsv = newAV();
a863c7d1 2882 thr->specific = newAV();
38a03e6e
MB
2883 thr->errsv = newSVpv("", 0);
2884 thr->errhv = newHV();
a863c7d1
MB
2885 thr->flags = THRf_R_JOINABLE;
2886 MUTEX_INIT(&thr->mutex);
199100c8 2887
d55594ae
GS
2888 /* top_env needs to be non-zero. It points to an area
2889 in which longjmp() stuff is stored, as C callstack
2890 info there at least is thread specific this has to
2891 be per-thread. Otherwise a 'die' in a thread gives
2892 that thread the C stack of last thread to do an eval {}!
2893 See comments in scope.h
2894 Initialize top entry (as in perl.c for main thread)
2895 */
533c011a
NIS
2896 PL_start_env.je_prev = NULL;
2897 PL_start_env.je_ret = -1;
2898 PL_start_env.je_mustcatch = TRUE;
2899 PL_top_env = &PL_start_env;
2900
2901 PL_in_eval = FALSE;
2902 PL_restartop = 0;
2903
b099ddc0
GS
2904 PL_statname = NEWSV(66,0);
2905 PL_maxscream = -1;
2906 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2907 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2908 PL_regindent = 0;
2909 PL_reginterp_cnt = 0;
2910 PL_lastscream = Nullsv;
2911 PL_screamfirst = 0;
2912 PL_screamnext = 0;
2913 PL_reg_start_tmp = 0;
2914 PL_reg_start_tmpl = 0;
2915
2916 /* parent thread's data needs to be locked while we make copy */
2917 MUTEX_LOCK(&t->mutex);
2918
2919 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
2920 PL_defstash = t->Tdefstash; /* XXX maybe these should */
2921 PL_curstash = t->Tcurstash; /* always be set to main? */
2922
6b88bc9c 2923 PL_tainted = t->Ttainted;
84fee439
NIS
2924 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
2925 PL_nrs = newSVsv(t->Tnrs);
2926 PL_rs = SvREFCNT_inc(PL_nrs);
2927 PL_last_in_gv = Nullgv;
2928 PL_ofslen = t->Tofslen;
2929 PL_ofs = savepvn(t->Tofs, PL_ofslen);
2930 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2931 PL_chopset = t->Tchopset;
2932 PL_formtarget = newSVsv(t->Tformtarget);
2933 PL_bodytarget = newSVsv(t->Tbodytarget);
2934 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 2935
54b9620d
MB
2936 /* Initialise all per-thread SVs that the template thread used */
2937 svp = AvARRAY(t->threadsv);
93965878 2938 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 2939 if (*svp && *svp != &PL_sv_undef) {
199100c8 2940 SV *sv = newSVsv(*svp);
54b9620d 2941 av_store(thr->threadsv, i, sv);
533c011a 2942 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 2943 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 2944 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
2945 }
2946 }
940cb80d 2947 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 2948
533c011a
NIS
2949 MUTEX_LOCK(&PL_threads_mutex);
2950 PL_nthreads++;
2951 thr->tid = ++PL_threadnum;
199100c8
MB
2952 thr->next = t->next;
2953 thr->prev = t;
2954 t->next = thr;
2955 thr->next->prev = thr;
533c011a 2956 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 2957
b099ddc0
GS
2958 /* done copying parent's state */
2959 MUTEX_UNLOCK(&t->mutex);
2960
a863c7d1
MB
2961#ifdef HAVE_THREAD_INTERN
2962 init_thread_intern(thr);
a863c7d1 2963#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2964 return thr;
2965}
11343788 2966#endif /* USE_THREADS */
760ac839
LW
2967
2968#ifdef HUGE_VAL
2969/*
2970 * This hack is to force load of "huge" support from libm.a
2971 * So it is in perl for (say) POSIX to use.
2972 * Needed for SunOS with Sun's 'acc' for example.
2973 */
2974double
8ac85365 2975Perl_huge(void)
760ac839
LW
2976{
2977 return HUGE_VAL;
2978}
2979#endif
4e35701f 2980
22239a37
NIS
2981#ifdef PERL_GLOBAL_STRUCT
2982struct perl_vars *
2983Perl_GetVars(void)
2984{
533c011a 2985 return &PL_Vars;
22239a37 2986}
31fb1209
NIS
2987#endif
2988
2989char **
2990get_op_names(void)
2991{
22c35a8c 2992 return PL_op_name;
31fb1209
NIS
2993}
2994
2995char **
2996get_op_descs(void)
2997{
22c35a8c 2998 return PL_op_desc;
31fb1209 2999}
9e6b2b00
GS
3000
3001char *
3002get_no_modify(void)
3003{
22c35a8c 3004 return (char*)PL_no_modify;
9e6b2b00
GS
3005}
3006
3007U32 *
3008get_opargs(void)
3009{
22c35a8c 3010 return PL_opargs;
9e6b2b00 3011}
51aa15f3 3012
51aa15f3
GS
3013SV **
3014get_specialsv_list(void)
3015{
3280af22 3016 return PL_specialsv_list;
f55ee38a 3017}
dc9e4912
GS
3018
3019
3020MGVTBL*
3021get_vtbl(int vtbl_id)
3022{
3023 MGVTBL* result = Null(MGVTBL*);
3024
3025 switch(vtbl_id) {
3026 case want_vtbl_sv:
3027 result = &PL_vtbl_sv;
3028 break;
3029 case want_vtbl_env:
3030 result = &PL_vtbl_env;
3031 break;
3032 case want_vtbl_envelem:
3033 result = &PL_vtbl_envelem;
3034 break;
3035 case want_vtbl_sig:
3036 result = &PL_vtbl_sig;
3037 break;
3038 case want_vtbl_sigelem:
3039 result = &PL_vtbl_sigelem;
3040 break;
3041 case want_vtbl_pack:
3042 result = &PL_vtbl_pack;
3043 break;
3044 case want_vtbl_packelem:
3045 result = &PL_vtbl_packelem;
3046 break;
3047 case want_vtbl_dbline:
3048 result = &PL_vtbl_dbline;
3049 break;
3050 case want_vtbl_isa:
3051 result = &PL_vtbl_isa;
3052 break;
3053 case want_vtbl_isaelem:
3054 result = &PL_vtbl_isaelem;
3055 break;
3056 case want_vtbl_arylen:
3057 result = &PL_vtbl_arylen;
3058 break;
3059 case want_vtbl_glob:
3060 result = &PL_vtbl_glob;
3061 break;
3062 case want_vtbl_mglob:
3063 result = &PL_vtbl_mglob;
3064 break;
3065 case want_vtbl_nkeys:
3066 result = &PL_vtbl_nkeys;
3067 break;
3068 case want_vtbl_taint:
3069 result = &PL_vtbl_taint;
3070 break;
3071 case want_vtbl_substr:
3072 result = &PL_vtbl_substr;
3073 break;
3074 case want_vtbl_vec:
3075 result = &PL_vtbl_vec;
3076 break;
3077 case want_vtbl_pos:
3078 result = &PL_vtbl_pos;
3079 break;
3080 case want_vtbl_bm:
3081 result = &PL_vtbl_bm;
3082 break;
3083 case want_vtbl_fm:
3084 result = &PL_vtbl_fm;
3085 break;
3086 case want_vtbl_uvar:
3087 result = &PL_vtbl_uvar;
3088 break;
3089#ifdef USE_THREADS
3090 case want_vtbl_mutex:
3091 result = &PL_vtbl_mutex;
3092 break;
3093#endif
3094 case want_vtbl_defelem:
3095 result = &PL_vtbl_defelem;
3096 break;
3097 case want_vtbl_regexp:
3098 result = &PL_vtbl_regexp;
3099 break;
3100 case want_vtbl_regdata:
3101 result = &PL_vtbl_regdata;
3102 break;
3103 case want_vtbl_regdatum:
3104 result = &PL_vtbl_regdatum;
3105 break;
3c90161d 3106#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3107 case want_vtbl_collxfrm:
3108 result = &PL_vtbl_collxfrm;
3109 break;
3c90161d 3110#endif
dc9e4912
GS
3111 case want_vtbl_amagic:
3112 result = &PL_vtbl_amagic;
3113 break;
3114 case want_vtbl_amagicelem:
3115 result = &PL_vtbl_amagicelem;
3116 break;
3117 }
3118 return result;
3119}
3120