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Re: BUG -> [19990526.004] perl5.005_57 error in util.c on sun4-solaris2.6
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, 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 *
08105a92 388instr(register const char *big, register const char *little)
378cc40b 389{
08105a92 390 register const char *s, *x;
79072805 391 register I32 first;
378cc40b 392
a687059c 393 if (!little)
08105a92 394 return (char*)big;
a687059c 395 first = *little++;
378cc40b 396 if (!first)
08105a92 397 return (char*)big;
378cc40b
LW
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)
08105a92 410 return (char*)(big-1);
378cc40b
LW
411 }
412 return Nullch;
413}
8d063cd8 414
a687059c
LW
415/* same as instr but allow embedded nulls */
416
417char *
08105a92 418ninstr(register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 419{
08105a92 420 register const char *s, *x;
79072805 421 register I32 first = *little;
08105a92 422 register const char *littleend = lend;
378cc40b 423
a0d0e21e 424 if (!first && little >= littleend)
08105a92 425 return (char*)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)
08105a92 439 return (char*)(big-1);
378cc40b 440 }
a687059c
LW
441 return Nullch;
442}
443
444/* reverse of the above--find last substring */
445
446char *
08105a92 447rninstr(register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 448{
08105a92
GS
449 register const char *bigbeg;
450 register const char *s, *x;
79072805 451 register I32 first = *little;
08105a92 452 register const char *littleend = lend;
a687059c 453
a0d0e21e 454 if (!first && little >= littleend)
08105a92 455 return (char*)bigend;
a687059c
LW
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)
08105a92 468 return (char*)(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
08105a92 477perl_new_ctype(const 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
08105a92 499perl_new_collate(const 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
08105a92 543perl_new_numeric(const 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
cf93c79d
IZ
892#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
893
894/* As a space optimization, we do not compile tables for strings of length
895 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
896 special-cased in fbm_instr().
897
898 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
899
378cc40b 900void
2779dcf1 901fbm_compile(SV *sv, U32 flags /* not used yet */)
378cc40b 902{
942e002e
GS
903 register U8 *s;
904 register U8 *table;
79072805 905 register U32 i;
0b71040e 906 STRLEN len;
79072805
LW
907 I32 rarest = 0;
908 U32 frequency = 256;
909
cf93c79d
IZ
910 if (flags & FBMcf_TAIL)
911 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 912 s = (U8*)SvPV_force(sv, len);
07f14f54 913 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
914 if (len == 0) /* TAIL might be on on a zero-length string. */
915 return;
02128f11 916 if (len > 2) {
cf93c79d
IZ
917 I32 mlen = len;
918 unsigned char *sb;
919
920 if (mlen > 255)
921 mlen = 255;
922 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
923 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
924 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
02128f11 925 for (i = 0; i < 256; i++) {
cf93c79d 926 table[i] = mlen;
02128f11 927 }
cf93c79d 928 table[-1] = flags; /* Not used yet */
02128f11 929 i = 0;
cf93c79d
IZ
930 sb = s - mlen;
931 while (s >= sb) {
932 if (table[*s] == mlen)
933 table[*s] = i;
934 s--, i++;
935 }
378cc40b 936 }
bbce6d69 937 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 938 SvVALID_on(sv);
378cc40b 939
463ee0b2 940 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 941 for (i = 0; i < len; i++) {
22c35a8c 942 if (PL_freq[s[i]] < frequency) {
bbce6d69 943 rarest = i;
22c35a8c 944 frequency = PL_freq[s[i]];
378cc40b
LW
945 }
946 }
79072805
LW
947 BmRARE(sv) = s[rarest];
948 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
949 BmUSEFUL(sv) = 100; /* Initial value */
950 if (flags & FBMcf_TAIL)
951 SvTAIL_on(sv);
760ac839 952 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
953}
954
cf93c79d
IZ
955/* If SvTAIL(littlestr), it has a fake '\n' at end. */
956/* If SvTAIL is actually due to \Z or \z, this gives false positives
957 if multiline */
958
378cc40b 959char *
411d5715 960fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 961{
a687059c 962 register unsigned char *s;
cf93c79d
IZ
963 STRLEN l;
964 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
965 register STRLEN littlelen = l;
966 register I32 multiline = flags & FBMrf_MULTILINE;
967
968 if (bigend - big < littlelen) {
969 check_tail:
970 if ( SvTAIL(littlestr)
971 && (bigend - big == littlelen - 1)
972 && (littlelen == 1
973 || *big == *little && memEQ(big, little, littlelen - 1)))
974 return (char*)big;
975 return Nullch;
976 }
378cc40b 977
cf93c79d
IZ
978 if (littlelen <= 2) { /* Special-cased */
979 register char c;
980
981 if (littlelen == 1) {
982 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
983 /* Know that bigend != big. */
984 if (bigend[-1] == '\n')
985 return (char *)(bigend - 1);
986 return (char *) bigend;
987 }
988 s = big;
989 while (s < bigend) {
990 if (*s == *little)
991 return (char *)s;
992 s++;
993 }
994 if (SvTAIL(littlestr))
995 return (char *) bigend;
996 return Nullch;
997 }
998 if (!littlelen)
999 return (char*)big; /* Cannot be SvTAIL! */
1000
1001 /* littlelen is 2 */
1002 if (SvTAIL(littlestr) && !multiline) {
1003 if (bigend[-1] == '\n' && bigend[-2] == *little)
1004 return (char*)bigend - 2;
1005 if (bigend[-1] == *little)
1006 return (char*)bigend - 1;
1007 return Nullch;
1008 }
1009 {
1010 /* This should be better than FBM if c1 == c2, and almost
1011 as good otherwise: maybe better since we do less indirection.
1012 And we save a lot of memory by caching no table. */
1013 register unsigned char c1 = little[0];
1014 register unsigned char c2 = little[1];
1015
1016 s = big + 1;
1017 bigend--;
1018 if (c1 != c2) {
1019 while (s <= bigend) {
1020 if (s[0] == c2) {
1021 if (s[-1] == c1)
1022 return (char*)s - 1;
1023 s += 2;
1024 continue;
3fe6f2dc 1025 }
cf93c79d
IZ
1026 next_chars:
1027 if (s[0] == c1) {
1028 if (s == bigend)
1029 goto check_1char_anchor;
1030 if (s[1] == c2)
1031 return (char*)s;
1032 else {
1033 s++;
1034 goto next_chars;
1035 }
1036 }
1037 else
1038 s += 2;
1039 }
1040 goto check_1char_anchor;
1041 }
1042 /* Now c1 == c2 */
1043 while (s <= bigend) {
1044 if (s[0] == c1) {
1045 if (s[-1] == c1)
1046 return (char*)s - 1;
1047 if (s == bigend)
1048 goto check_1char_anchor;
1049 if (s[1] == c1)
1050 return (char*)s;
1051 s += 3;
02128f11 1052 }
c277df42 1053 else
cf93c79d 1054 s += 2;
c277df42 1055 }
c277df42 1056 }
cf93c79d
IZ
1057 check_1char_anchor: /* One char and anchor! */
1058 if (SvTAIL(littlestr) && (*bigend == *little))
1059 return (char *)bigend; /* bigend is already decremented. */
1060 return Nullch;
d48672a2 1061 }
cf93c79d 1062 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1063 s = bigend - littlelen;
cf93c79d 1064 if (s >= big
02128f11 1065 && bigend[-1] == '\n'
cf93c79d
IZ
1066 && *s == *little
1067 /* Automatically of length > 2 */
1068 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
bbce6d69 1069 return (char*)s; /* how sweet it is */
cf93c79d
IZ
1070 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1071 littlelen - 2))
1072 return (char*)s + 1; /* how sweet it is */
02128f11
IZ
1073 return Nullch;
1074 }
cf93c79d
IZ
1075 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1076 char *b = ninstr((char*)big,(char*)bigend,
1077 (char*)little, (char*)little + littlelen);
1078
1079 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1080 /* Chop \n from littlestr: */
1081 s = bigend - littlelen + 1;
1082 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1083 littlelen - 2))
3fe6f2dc 1084 return (char*)s;
cf93c79d 1085 return Nullch;
a687059c 1086 }
cf93c79d 1087 return b;
a687059c 1088 }
cf93c79d
IZ
1089
1090 { /* Do actual FBM. */
1091 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1092 register unsigned char *oldlittle;
1093
1094 if (littlelen > bigend - big)
1095 return Nullch;
1096 --littlelen; /* Last char found by table lookup */
1097
1098 s = big + littlelen;
1099 little += littlelen; /* last char */
1100 oldlittle = little;
1101 if (s < bigend) {
1102 register I32 tmp;
1103
1104 top2:
1105 /*SUPPRESS 560*/
1106 if (tmp = table[*s]) {
62b28dd9 1107#ifdef POINTERRIGOR
cf93c79d
IZ
1108 if (bigend - s > tmp) {
1109 s += tmp;
1110 goto top2;
1111 }
bbce6d69 1112 s += tmp;
62b28dd9 1113#else
cf93c79d 1114 if ((s += tmp) < bigend)
62b28dd9 1115 goto top2;
cf93c79d
IZ
1116#endif
1117 goto check_end;
1118 }
1119 else { /* less expensive than calling strncmp() */
1120 register unsigned char *olds = s;
1121
1122 tmp = littlelen;
1123
1124 while (tmp--) {
1125 if (*--s == *--little)
1126 continue;
1127 differ:
1128 s = olds + 1; /* here we pay the price for failure */
1129 little = oldlittle;
1130 if (s < bigend) /* fake up continue to outer loop */
1131 goto top2;
1132 goto check_end;
1133 }
1134 return (char *)s;
a687059c 1135 }
378cc40b 1136 }
cf93c79d
IZ
1137 check_end:
1138 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1139 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1140 return (char*)bigend - littlelen;
1141 return Nullch;
378cc40b 1142 }
378cc40b
LW
1143}
1144
c277df42
IZ
1145/* start_shift, end_shift are positive quantities which give offsets
1146 of ends of some substring of bigstr.
1147 If `last' we want the last occurence.
1148 old_posp is the way of communication between consequent calls if
1149 the next call needs to find the .
1150 The initial *old_posp should be -1.
cf93c79d
IZ
1151
1152 Note that we take into account SvTAIL, so one can get extra
1153 optimizations if _ALL flag is set.
c277df42
IZ
1154 */
1155
cf93c79d
IZ
1156/* If SvTAIL is actually due to \Z or \z, this gives false positives
1157 if PL_multiline. In fact if !PL_multiline the autoritative answer
1158 is not supported yet. */
1159
378cc40b 1160char *
c277df42 1161screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1162{
5c0ca799 1163 dTHR;
a687059c
LW
1164 register unsigned char *s, *x;
1165 register unsigned char *big;
79072805
LW
1166 register I32 pos;
1167 register I32 previous;
1168 register I32 first;
a687059c 1169 register unsigned char *little;
c277df42 1170 register I32 stop_pos;
a687059c 1171 register unsigned char *littleend;
c277df42 1172 I32 found = 0;
378cc40b 1173
c277df42 1174 if (*old_posp == -1
3280af22 1175 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1176 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1177 cant_find:
1178 if ( BmRARE(littlestr) == '\n'
1179 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1180 little = (unsigned char *)(SvPVX(littlestr));
1181 littleend = little + SvCUR(littlestr);
1182 first = *little++;
1183 goto check_tail;
1184 }
378cc40b 1185 return Nullch;
cf93c79d
IZ
1186 }
1187
463ee0b2 1188 little = (unsigned char *)(SvPVX(littlestr));
79072805 1189 littleend = little + SvCUR(littlestr);
378cc40b 1190 first = *little++;
c277df42 1191 /* The value of pos we can start at: */
79072805 1192 previous = BmPREVIOUS(littlestr);
463ee0b2 1193 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1194 /* The value of pos we can stop at: */
1195 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1196 if (previous + start_shift > stop_pos) {
1197 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1198 goto check_tail;
1199 return Nullch;
1200 }
c277df42 1201 while (pos < previous + start_shift) {
3280af22 1202 if (!(pos += PL_screamnext[pos]))
cf93c79d 1203 goto cant_find;
378cc40b 1204 }
de3bb511 1205#ifdef POINTERRIGOR
bbce6d69 1206 do {
ef64f398 1207 if (pos >= stop_pos) break;
bbce6d69
PP
1208 if (big[pos-previous] != first)
1209 continue;
1210 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1211 if (*s++ != *x++) {
1212 s--;
1213 break;
de3bb511 1214 }
bbce6d69 1215 }
c277df42
IZ
1216 if (s == littleend) {
1217 *old_posp = pos;
1218 if (!last) return (char *)(big+pos-previous);
1219 found = 1;
1220 }
6b88bc9c 1221 } while ( pos += PL_screamnext[pos] );
c277df42 1222 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1223#else /* !POINTERRIGOR */
1224 big -= previous;
bbce6d69 1225 do {
ef64f398 1226 if (pos >= stop_pos) break;
bbce6d69
PP
1227 if (big[pos] != first)
1228 continue;
1229 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1230 if (*s++ != *x++) {
1231 s--;
1232 break;
378cc40b 1233 }
bbce6d69 1234 }
c277df42
IZ
1235 if (s == littleend) {
1236 *old_posp = pos;
1237 if (!last) return (char *)(big+pos);
1238 found = 1;
1239 }
3280af22 1240 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1241 if (last && found)
1242 return (char *)(big+(*old_posp));
de3bb511 1243#endif /* POINTERRIGOR */
cf93c79d
IZ
1244 check_tail:
1245 if (!SvTAIL(littlestr) || (end_shift > 0))
1246 return Nullch;
1247 /* Ignore the trailing "\n". This code is not microoptimized */
1248 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1249 stop_pos = littleend - little; /* Actual littlestr len */
1250 if (stop_pos == 0)
1251 return (char*)big;
1252 big -= stop_pos;
1253 if (*big == first
1254 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1255 return (char*)big;
1256 return Nullch;
8d063cd8
LW
1257}
1258
79072805 1259I32
08105a92 1260ibcmp(const char *s1, const char *s2, register I32 len)
79072805 1261{
bbce6d69
PP
1262 register U8 *a = (U8 *)s1;
1263 register U8 *b = (U8 *)s2;
79072805 1264 while (len--) {
22c35a8c 1265 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1266 return 1;
1267 a++,b++;
1268 }
1269 return 0;
1270}
1271
1272I32
08105a92 1273ibcmp_locale(const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1274{
1275 register U8 *a = (U8 *)s1;
1276 register U8 *b = (U8 *)s2;
1277 while (len--) {
22c35a8c 1278 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1279 return 1;
1280 a++,b++;
79072805
LW
1281 }
1282 return 0;
1283}
1284
8d063cd8
LW
1285/* copy a string to a safe spot */
1286
1287char *
08105a92 1288savepv(const char *sv)
8d063cd8 1289{
a687059c 1290 register char *newaddr;
8d063cd8 1291
79072805
LW
1292 New(902,newaddr,strlen(sv)+1,char);
1293 (void)strcpy(newaddr,sv);
8d063cd8
LW
1294 return newaddr;
1295}
1296
a687059c
LW
1297/* same thing but with a known length */
1298
1299char *
08105a92 1300savepvn(const char *sv, register I32 len)
a687059c
LW
1301{
1302 register char *newaddr;
1303
1304 New(903,newaddr,len+1,char);
79072805 1305 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1306 newaddr[len] = '\0'; /* is now */
1307 return newaddr;
1308}
1309
fc36a67e
PP
1310/* the SV for form() and mess() is not kept in an arena */
1311
76e3520e 1312STATIC SV *
8ac85365 1313mess_alloc(void)
fc36a67e 1314{
e72dc28c 1315 dTHR;
fc36a67e
PP
1316 SV *sv;
1317 XPVMG *any;
1318
e72dc28c
GS
1319 if (!PL_dirty)
1320 return sv_2mortal(newSVpvn("",0));
1321
0372dbb6
GS
1322 if (PL_mess_sv)
1323 return PL_mess_sv;
1324
fc36a67e
PP
1325 /* Create as PVMG now, to avoid any upgrading later */
1326 New(905, sv, 1, SV);
1327 Newz(905, any, 1, XPVMG);
1328 SvFLAGS(sv) = SVt_PVMG;
1329 SvANY(sv) = (void*)any;
1330 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1331 PL_mess_sv = sv;
fc36a67e
PP
1332 return sv;
1333}
1334
8990e307 1335char *
46fc3d4c 1336form(const char* pat, ...)
8990e307 1337{
e72dc28c 1338 SV *sv = mess_alloc();
46fc3d4c 1339 va_list args;
46fc3d4c 1340 va_start(args, pat);
e72dc28c 1341 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1342 va_end(args);
e72dc28c 1343 return SvPVX(sv);
46fc3d4c 1344}
a687059c 1345
06bf62c7 1346SV *
8ac85365 1347mess(const char *pat, va_list *args)
46fc3d4c 1348{
e72dc28c 1349 SV *sv = mess_alloc();
46fc3d4c
PP
1350 static char dgd[] = " during global destruction.\n";
1351
fc36a67e 1352 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1353 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1354 dTHR;
515f54a1
GS
1355 if (PL_curcop->cop_line)
1356 sv_catpvf(sv, " at %_ line %ld",
1357 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1358 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1359 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1360 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
515f54a1
GS
1361 sv_catpvf(sv, ", <%s> %s %ld",
1362 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1363 line_mode ? "line" : "chunk",
1364 (long)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1365 }
515f54a1 1366 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1367 }
06bf62c7 1368 return sv;
a687059c
LW
1369}
1370
36477c24 1371OP *
71be2cbc 1372die(const char* pat, ...)
36477c24 1373{
5dc0d613 1374 dTHR;
36477c24
PP
1375 va_list args;
1376 char *message;
3280af22 1377 int was_in_eval = PL_in_eval;
36477c24
PP
1378 HV *stash;
1379 GV *gv;
1380 CV *cv;
06bf62c7
GS
1381 SV *msv;
1382 STRLEN msglen;
36477c24 1383
8b73bbec 1384 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1385 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1386 thr, PL_curstack, PL_mainstack));
36477c24 1387
36477c24 1388 va_start(args, pat);
06bf62c7
GS
1389 if (pat) {
1390 msv = mess(pat, &args);
1391 message = SvPV(msv,msglen);
1392 }
1393 else {
1394 message = Nullch;
1395 }
36477c24
PP
1396 va_end(args);
1397
8b73bbec 1398 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1399 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1400 thr, message, PL_diehook));
3280af22 1401 if (PL_diehook) {
1738f5c4 1402 /* sv_2cv might call croak() */
3280af22 1403 SV *olddiehook = PL_diehook;
1738f5c4 1404 ENTER;
3280af22
NIS
1405 SAVESPTR(PL_diehook);
1406 PL_diehook = Nullsv;
1738f5c4
CS
1407 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1408 LEAVE;
1409 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1410 dSP;
774d564b
PP
1411 SV *msg;
1412
1413 ENTER;
79cb57f6 1414 if (message) {
06bf62c7 1415 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1416 SvREADONLY_on(msg);
1417 SAVEFREESV(msg);
1418 }
1419 else {
1420 msg = ERRSV;
1421 }
1738f5c4 1422
e788e7d3 1423 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1424 PUSHMARK(SP);
1738f5c4
CS
1425 XPUSHs(msg);
1426 PUTBACK;
1427 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1428 POPSTACK;
774d564b 1429 LEAVE;
1738f5c4 1430 }
36477c24
PP
1431 }
1432
06bf62c7 1433 PL_restartop = die_where(message, msglen);
8b73bbec 1434 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1435 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1436 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1437 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1438 JMPENV_JUMP(3);
3280af22 1439 return PL_restartop;
36477c24
PP
1440}
1441
79072805 1442void
71be2cbc 1443croak(const char* pat, ...)
a687059c 1444{
11343788 1445 dTHR;
a687059c 1446 va_list args;
de3bb511 1447 char *message;
748a9306
LW
1448 HV *stash;
1449 GV *gv;
1450 CV *cv;
06bf62c7
GS
1451 SV *msv;
1452 STRLEN msglen;
a687059c 1453
8990e307 1454 va_start(args, pat);
06bf62c7
GS
1455 msv = mess(pat, &args);
1456 message = SvPV(msv,msglen);
a687059c 1457 va_end(args);
8b73bbec 1458 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1459 if (PL_diehook) {
1738f5c4 1460 /* sv_2cv might call croak() */
3280af22 1461 SV *olddiehook = PL_diehook;
1738f5c4 1462 ENTER;
3280af22
NIS
1463 SAVESPTR(PL_diehook);
1464 PL_diehook = Nullsv;
20cec16a 1465 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1466 LEAVE;
1467 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1468 dSP;
774d564b
PP
1469 SV *msg;
1470
1471 ENTER;
06bf62c7 1472 msg = newSVpvn(message, msglen);
774d564b
PP
1473 SvREADONLY_on(msg);
1474 SAVEFREESV(msg);
20cec16a 1475
e788e7d3 1476 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1477 PUSHMARK(SP);
1738f5c4 1478 XPUSHs(msg);
20cec16a
PP
1479 PUTBACK;
1480 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1481 POPSTACK;
774d564b 1482 LEAVE;
20cec16a 1483 }
748a9306 1484 }
3280af22 1485 if (PL_in_eval) {
06bf62c7 1486 PL_restartop = die_where(message, msglen);
6224f72b 1487 JMPENV_JUMP(3);
a0d0e21e 1488 }
d175a3f0
GS
1489 {
1490#ifdef USE_SFIO
1491 /* SFIO can really mess with your errno */
1492 int e = errno;
1493#endif
06bf62c7 1494 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS
1495 (void)PerlIO_flush(PerlIO_stderr());
1496#ifdef USE_SFIO
1497 errno = e;
1498#endif
1499 }
f86702cc 1500 my_failure_exit();
a687059c
LW
1501}
1502
8990e307 1503void
71be2cbc 1504warn(const char* pat,...)
a687059c
LW
1505{
1506 va_list args;
de3bb511 1507 char *message;
748a9306
LW
1508 HV *stash;
1509 GV *gv;
1510 CV *cv;
06bf62c7
GS
1511 SV *msv;
1512 STRLEN msglen;
a687059c 1513
8990e307 1514 va_start(args, pat);
06bf62c7
GS
1515 msv = mess(pat, &args);
1516 message = SvPV(msv, msglen);
a687059c
LW
1517 va_end(args);
1518
3280af22 1519 if (PL_warnhook) {
1738f5c4 1520 /* sv_2cv might call warn() */
11343788 1521 dTHR;
3280af22 1522 SV *oldwarnhook = PL_warnhook;
1738f5c4 1523 ENTER;
3280af22
NIS
1524 SAVESPTR(PL_warnhook);
1525 PL_warnhook = Nullsv;
20cec16a 1526 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1527 LEAVE;
1528 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1529 dSP;
774d564b
PP
1530 SV *msg;
1531
1532 ENTER;
06bf62c7 1533 msg = newSVpvn(message, msglen);
774d564b
PP
1534 SvREADONLY_on(msg);
1535 SAVEFREESV(msg);
1536
e788e7d3 1537 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1538 PUSHMARK(SP);
774d564b 1539 XPUSHs(msg);
20cec16a
PP
1540 PUTBACK;
1541 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1542 POPSTACK;
774d564b 1543 LEAVE;
20cec16a
PP
1544 return;
1545 }
748a9306 1546 }
06bf62c7 1547 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1548#ifdef LEAKTEST
8c52afec
IZ
1549 DEBUG_L(*message == '!'
1550 ? (xstat(message[1]=='!'
1551 ? (message[2]=='!' ? 2 : 1)
1552 : 0)
1553 , 0)
1554 : 0);
a687059c 1555#endif
20cec16a 1556 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1557}
8d063cd8 1558
599cee73
PM
1559void
1560warner(U32 err, const char* pat,...)
1561{
d008e5eb 1562 dTHR;
599cee73
PM
1563 va_list args;
1564 char *message;
1565 HV *stash;
1566 GV *gv;
1567 CV *cv;
06bf62c7
GS
1568 SV *msv;
1569 STRLEN msglen;
599cee73
PM
1570
1571 va_start(args, pat);
06bf62c7
GS
1572 msv = mess(pat, &args);
1573 message = SvPV(msv, msglen);
599cee73
PM
1574 va_end(args);
1575
1576 if (ckDEAD(err)) {
1577#ifdef USE_THREADS
d008e5eb 1578 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1579#endif /* USE_THREADS */
1580 if (PL_diehook) {
1581 /* sv_2cv might call croak() */
1582 SV *olddiehook = PL_diehook;
1583 ENTER;
1584 SAVESPTR(PL_diehook);
1585 PL_diehook = Nullsv;
1586 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1587 LEAVE;
1588 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1589 dSP;
1590 SV *msg;
1591
1592 ENTER;
06bf62c7 1593 msg = newSVpvn(message, msglen);
599cee73
PM
1594 SvREADONLY_on(msg);
1595 SAVEFREESV(msg);
1596
1597 PUSHMARK(sp);
1598 XPUSHs(msg);
1599 PUTBACK;
1600 perl_call_sv((SV*)cv, G_DISCARD);
1601
1602 LEAVE;
1603 }
1604 }
1605 if (PL_in_eval) {
06bf62c7 1606 PL_restartop = die_where(message, msglen);
599cee73
PM
1607 JMPENV_JUMP(3);
1608 }
06bf62c7 1609 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1610 (void)PerlIO_flush(PerlIO_stderr());
1611 my_failure_exit();
1612
1613 }
1614 else {
1615 if (PL_warnhook) {
1616 /* sv_2cv might call warn() */
1617 dTHR;
1618 SV *oldwarnhook = PL_warnhook;
1619 ENTER;
1620 SAVESPTR(PL_warnhook);
1621 PL_warnhook = Nullsv;
1622 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1623 LEAVE;
1624 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1625 dSP;
1626 SV *msg;
1627
1628 ENTER;
06bf62c7 1629 msg = newSVpvn(message, msglen);
599cee73
PM
1630 SvREADONLY_on(msg);
1631 SAVEFREESV(msg);
1632
1633 PUSHMARK(sp);
1634 XPUSHs(msg);
1635 PUTBACK;
1636 perl_call_sv((SV*)cv, G_DISCARD);
1637
1638 LEAVE;
1639 return;
1640 }
1641 }
06bf62c7 1642 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1643#ifdef LEAKTEST
1644 DEBUG_L(xstat());
1645#endif
1646 (void)PerlIO_flush(PerlIO_stderr());
1647 }
1648}
1649
a0d0e21e 1650#ifndef VMS /* VMS' my_setenv() is in VMS.c */
f89d6eaa 1651#if !defined(WIN32) && !defined(CYGWIN32)
8d063cd8 1652void
8ac85365 1653my_setenv(char *nam, char *val)
8d063cd8 1654{
f2517201
GS
1655#ifndef PERL_USE_SAFE_PUTENV
1656 /* most putenv()s leak, so we manipulate environ directly */
79072805 1657 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1658
3280af22 1659 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1660 I32 j;
1661 I32 max;
fe14fcc3
LW
1662 char **tmpenv;
1663
de3bb511 1664 /*SUPPRESS 530*/
fe14fcc3 1665 for (max = i; environ[max]; max++) ;
f2517201
GS
1666 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1667 for (j=0; j<max; j++) { /* copy environment */
1668 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1669 strcpy(tmpenv[j], environ[j]);
1670 }
fe14fcc3
LW
1671 tmpenv[max] = Nullch;
1672 environ = tmpenv; /* tell exec where it is now */
1673 }
a687059c 1674 if (!val) {
f2517201 1675 safesysfree(environ[i]);
a687059c
LW
1676 while (environ[i]) {
1677 environ[i] = environ[i+1];
1678 i++;
1679 }
1680 return;
1681 }
8d063cd8 1682 if (!environ[i]) { /* does not exist yet */
f2517201 1683 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1684 environ[i+1] = Nullch; /* make sure it's null terminated */
1685 }
fe14fcc3 1686 else
f2517201
GS
1687 safesysfree(environ[i]);
1688 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1689
62b28dd9 1690#ifndef MSDOS
a687059c 1691 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1692#else
1693 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1694 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1695 * some utilities and applications may break because they only look
1696 * for upper case strings. (Fixed strupr() bug here.)]
1697 */
1698 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1699 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1700#endif /* MSDOS */
f2517201
GS
1701
1702#else /* PERL_USE_SAFE_PUTENV */
1703 char *new_env;
1704
1705 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1706#ifndef MSDOS
1707 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1708#else
1709 strcpy(new_env,nam); strupr(new_env);
1710 (void)sprintf(new_env + strlen(nam),"=%s",val);
1711#endif
1712 (void)putenv(new_env);
1713#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1714}
1715
3e3baf6d 1716#else /* if WIN32 */
68dc0745
PP
1717
1718void
4e35701f 1719my_setenv(char *nam,char *val)
68dc0745 1720{
3e3baf6d
TB
1721
1722#ifdef USE_WIN32_RTL_ENV
1723
68dc0745
PP
1724 register char *envstr;
1725 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1726 STRLEN vallen;
1727 char *oldstr = environ[setenv_getix(nam)];
1728
1729 /* putenv() has totally broken semantics in both the Borland
1730 * and Microsoft CRTLs. They either store the passed pointer in
1731 * the environment without making a copy, or make a copy and don't
1732 * free it. And on top of that, they dont free() old entries that
1733 * are being replaced/deleted. This means the caller must
1734 * free any old entries somehow, or we end up with a memory
1735 * leak every time my_setenv() is called. One might think
1736 * one could directly manipulate environ[], like the UNIX code
1737 * above, but direct changes to environ are not allowed when
1738 * calling putenv(), since the RTLs maintain an internal
1739 * *copy* of environ[]. Bad, bad, *bad* stink.
1740 * GSAR 97-06-07
1741 */
68dc0745 1742
3e3baf6d
TB
1743 if (!val) {
1744 if (!oldstr)
1745 return;
1746 val = "";
1747 vallen = 0;
1748 }
1749 else
1750 vallen = strlen(val);
f2517201 1751 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1752 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1753 (void)PerlEnv_putenv(envstr);
3e3baf6d 1754 if (oldstr)
f2517201 1755 safesysfree(oldstr);
3e3baf6d 1756#ifdef _MSC_VER
f2517201 1757 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1758#endif
1759
1760#else /* !USE_WIN32_RTL_ENV */
1761
ac5c734f
GS
1762 register char *envstr;
1763 STRLEN len = strlen(nam) + 3;
1764 if (!val) {
1765 val = "";
1766 }
1767 len += strlen(val);
1768 New(904, envstr, len, char);
1769 (void)sprintf(envstr,"%s=%s",nam,val);
1770 (void)PerlEnv_putenv(envstr);
1771 Safefree(envstr);
3e3baf6d
TB
1772
1773#endif
1774}
1775
1776#endif /* WIN32 */
1777
1778I32
8ac85365 1779setenv_getix(char *nam)
3e3baf6d
TB
1780{
1781 register I32 i, len = strlen(nam);
1782
1783 for (i = 0; environ[i]; i++) {
1784 if (
1785#ifdef WIN32
1786 strnicmp(environ[i],nam,len) == 0
1787#else
1788 strnEQ(environ[i],nam,len)
1789#endif
1790 && environ[i][len] == '=')
1791 break; /* strnEQ must come first to avoid */
1792 } /* potential SEGV's */
1793 return i;
68dc0745
PP
1794}
1795
a0d0e21e 1796#endif /* !VMS */
378cc40b 1797
16d20bd9 1798#ifdef UNLINK_ALL_VERSIONS
79072805 1799I32
378cc40b
LW
1800unlnk(f) /* unlink all versions of a file */
1801char *f;
1802{
79072805 1803 I32 i;
378cc40b 1804
6ad3d225 1805 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1806 return i ? 0 : -1;
1807}
1808#endif
1809
85e6fe83 1810#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1811char *
08105a92 1812my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW
1813{
1814 char *retval = to;
1815
7c0587c8
LW
1816 if (from - to >= 0) {
1817 while (len--)
1818 *to++ = *from++;
1819 }
1820 else {
1821 to += len;
1822 from += len;
1823 while (len--)
faf8582f 1824 *(--to) = *(--from);
7c0587c8 1825 }
378cc40b
LW
1826 return retval;
1827}
ffed7fef 1828#endif
378cc40b 1829
fc36a67e
PP
1830#ifndef HAS_MEMSET
1831void *
08105a92 1832my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
1833{
1834 char *retval = loc;
1835
1836 while (len--)
1837 *loc++ = ch;
1838 return retval;
1839}
1840#endif
1841
7c0587c8 1842#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1843char *
08105a92 1844my_bzero(register char *loc, register I32 len)
378cc40b
LW
1845{
1846 char *retval = loc;
1847
1848 while (len--)
1849 *loc++ = 0;
1850 return retval;
1851}
1852#endif
7c0587c8 1853
36477c24 1854#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1855I32
08105a92 1856my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 1857{
36477c24
PP
1858 register U8 *a = (U8 *)s1;
1859 register U8 *b = (U8 *)s2;
79072805 1860 register I32 tmp;
7c0587c8
LW
1861
1862 while (len--) {
36477c24 1863 if (tmp = *a++ - *b++)
7c0587c8
LW
1864 return tmp;
1865 }
1866 return 0;
1867}
36477c24 1868#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1869
fe14fcc3 1870#ifndef HAS_VPRINTF
a687059c 1871
85e6fe83 1872#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1873char *
1874#else
1875int
1876#endif
08105a92 1877vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
1878{
1879 FILE fakebuf;
1880
1881 fakebuf._ptr = dest;
1882 fakebuf._cnt = 32767;
35c8bce7
LW
1883#ifndef _IOSTRG
1884#define _IOSTRG 0
1885#endif
a687059c
LW
1886 fakebuf._flag = _IOWRT|_IOSTRG;
1887 _doprnt(pat, args, &fakebuf); /* what a kludge */
1888 (void)putc('\0', &fakebuf);
85e6fe83 1889#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1890 return(dest);
1891#else
1892 return 0; /* perl doesn't use return value */
1893#endif
1894}
1895
fe14fcc3 1896#endif /* HAS_VPRINTF */
a687059c
LW
1897
1898#ifdef MYSWAP
ffed7fef 1899#if BYTEORDER != 0x4321
a687059c 1900short
748a9306 1901my_swap(short s)
a687059c
LW
1902{
1903#if (BYTEORDER & 1) == 0
1904 short result;
1905
1906 result = ((s & 255) << 8) + ((s >> 8) & 255);
1907 return result;
1908#else
1909 return s;
1910#endif
1911}
1912
1913long
748a9306 1914my_htonl(long l)
a687059c
LW
1915{
1916 union {
1917 long result;
ffed7fef 1918 char c[sizeof(long)];
a687059c
LW
1919 } u;
1920
ffed7fef 1921#if BYTEORDER == 0x1234
a687059c
LW
1922 u.c[0] = (l >> 24) & 255;
1923 u.c[1] = (l >> 16) & 255;
1924 u.c[2] = (l >> 8) & 255;
1925 u.c[3] = l & 255;
1926 return u.result;
1927#else
ffed7fef 1928#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1929 croak("Unknown BYTEORDER\n");
a687059c 1930#else
79072805
LW
1931 register I32 o;
1932 register I32 s;
a687059c 1933
ffed7fef
LW
1934 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1935 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1936 }
1937 return u.result;
1938#endif
1939#endif
1940}
1941
1942long
748a9306 1943my_ntohl(long l)
a687059c
LW
1944{
1945 union {
1946 long l;
ffed7fef 1947 char c[sizeof(long)];
a687059c
LW
1948 } u;
1949
ffed7fef 1950#if BYTEORDER == 0x1234
a687059c
LW
1951 u.c[0] = (l >> 24) & 255;
1952 u.c[1] = (l >> 16) & 255;
1953 u.c[2] = (l >> 8) & 255;
1954 u.c[3] = l & 255;
1955 return u.l;
1956#else
ffed7fef 1957#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1958 croak("Unknown BYTEORDER\n");
a687059c 1959#else
79072805
LW
1960 register I32 o;
1961 register I32 s;
a687059c
LW
1962
1963 u.l = l;
1964 l = 0;
ffed7fef
LW
1965 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1966 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1967 }
1968 return l;
1969#endif
1970#endif
1971}
1972
ffed7fef 1973#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1974#endif /* MYSWAP */
1975
1976/*
1977 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1978 * If these functions are defined,
1979 * the BYTEORDER is neither 0x1234 nor 0x4321.
1980 * However, this is not assumed.
1981 * -DWS
1982 */
1983
1984#define HTOV(name,type) \
1985 type \
1986 name (n) \
1987 register type n; \
1988 { \
1989 union { \
1990 type value; \
1991 char c[sizeof(type)]; \
1992 } u; \
79072805
LW
1993 register I32 i; \
1994 register I32 s; \
988174c1
LW
1995 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1996 u.c[i] = (n >> s) & 0xFF; \
1997 } \
1998 return u.value; \
1999 }
2000
2001#define VTOH(name,type) \
2002 type \
2003 name (n) \
2004 register type n; \
2005 { \
2006 union { \
2007 type value; \
2008 char c[sizeof(type)]; \
2009 } u; \
79072805
LW
2010 register I32 i; \
2011 register I32 s; \
988174c1
LW
2012 u.value = n; \
2013 n = 0; \
2014 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2015 n += (u.c[i] & 0xFF) << s; \
2016 } \
2017 return n; \
2018 }
2019
2020#if defined(HAS_HTOVS) && !defined(htovs)
2021HTOV(htovs,short)
2022#endif
2023#if defined(HAS_HTOVL) && !defined(htovl)
2024HTOV(htovl,long)
2025#endif
2026#if defined(HAS_VTOHS) && !defined(vtohs)
2027VTOH(vtohs,short)
2028#endif
2029#if defined(HAS_VTOHL) && !defined(vtohl)
2030VTOH(vtohl,long)
2031#endif
a687059c 2032
5f05dabc 2033 /* VMS' my_popen() is in VMS.c, same with OS/2. */
092bebab 2034#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
760ac839 2035PerlIO *
8ac85365 2036my_popen(char *cmd, char *mode)
a687059c
LW
2037{
2038 int p[2];
8ac85365 2039 register I32 This, that;
79072805
LW
2040 register I32 pid;
2041 SV *sv;
1738f5c4 2042 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2043 I32 did_pipes = 0;
2044 int pp[2];
a687059c 2045
45bc9206 2046 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2047#ifdef OS2
2048 if (doexec) {
2049 return my_syspopen(cmd,mode);
2050 }
2051#endif
8ac85365
NIS
2052 This = (*mode == 'w');
2053 that = !This;
3280af22 2054 if (doexec && PL_tainting) {
bbce6d69
PP
2055 taint_env();
2056 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2057 }
c2267164
IZ
2058 if (PerlProc_pipe(p) < 0)
2059 return Nullfp;
e446cec8
IZ
2060 if (doexec && PerlProc_pipe(pp) >= 0)
2061 did_pipes = 1;
a687059c
LW
2062 while ((pid = (doexec?vfork():fork())) < 0) {
2063 if (errno != EAGAIN) {
6ad3d225 2064 PerlLIO_close(p[This]);
e446cec8
IZ
2065 if (did_pipes) {
2066 PerlLIO_close(pp[0]);
2067 PerlLIO_close(pp[1]);
2068 }
a687059c 2069 if (!doexec)
463ee0b2 2070 croak("Can't fork");
a687059c
LW
2071 return Nullfp;
2072 }
2073 sleep(5);
2074 }
2075 if (pid == 0) {
79072805
LW
2076 GV* tmpgv;
2077
30ac6d9b
GS
2078#undef THIS
2079#undef THAT
a687059c 2080#define THIS that
8ac85365 2081#define THAT This
6ad3d225 2082 PerlLIO_close(p[THAT]);
e446cec8
IZ
2083 if (did_pipes) {
2084 PerlLIO_close(pp[0]);
2085#if defined(HAS_FCNTL) && defined(F_SETFD)
2086 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2087#endif
2088 }
a687059c 2089 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2090 PerlLIO_dup2(p[THIS], *mode == 'r');
2091 PerlLIO_close(p[THIS]);
a687059c
LW
2092 }
2093 if (doexec) {
a0d0e21e 2094#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2095 int fd;
2096
2097#ifndef NOFILE
2098#define NOFILE 20
2099#endif
6b88bc9c 2100 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2101 if (fd != pp[1])
2102 PerlLIO_close(fd);
ae986130 2103#endif
e446cec8 2104 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2105 PerlProc__exit(1);
a687059c 2106 }
de3bb511 2107 /*SUPPRESS 560*/
85e6fe83 2108 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2109 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS
2110 PL_forkprocess = 0;
2111 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2112 return Nullfp;
2113#undef THIS
2114#undef THAT
2115 }
62b28dd9 2116 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2117 PerlLIO_close(p[that]);
e446cec8
IZ
2118 if (did_pipes)
2119 PerlLIO_close(pp[1]);
8ac85365 2120 if (p[that] < p[This]) {
6ad3d225
GS
2121 PerlLIO_dup2(p[This], p[that]);
2122 PerlLIO_close(p[This]);
8ac85365 2123 p[This] = p[that];
62b28dd9 2124 }
3280af22 2125 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2126 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2127 SvIVX(sv) = pid;
3280af22 2128 PL_forkprocess = pid;
e446cec8
IZ
2129 if (did_pipes && pid > 0) {
2130 int errkid;
2131 int n = 0, n1;
2132
2133 while (n < sizeof(int)) {
2134 n1 = PerlLIO_read(pp[0],
2135 (void*)(((char*)&errkid)+n),
2136 (sizeof(int)) - n);
2137 if (n1 <= 0)
2138 break;
2139 n += n1;
2140 }
2141 if (n) { /* Error */
2142 if (n != sizeof(int))
2143 croak("panic: kid popen errno read");
2144 PerlLIO_close(pp[0]);
2145 errno = errkid; /* Propagate errno from kid */
2146 return Nullfp;
2147 }
2148 }
2149 if (did_pipes)
2150 PerlLIO_close(pp[0]);
8ac85365 2151 return PerlIO_fdopen(p[This], mode);
a687059c 2152}
7c0587c8 2153#else
55497cff 2154#if defined(atarist) || defined(DJGPP)
7c0587c8 2155FILE *popen();
760ac839 2156PerlIO *
45bc9206 2157my_popen(char *cmd, char *mode)
7c0587c8 2158{
760ac839 2159 /* Needs work for PerlIO ! */
55497cff 2160 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2161 PERL_FLUSHALL_FOR_CHILD;
55497cff 2162 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2163}
2164#endif
2165
2166#endif /* !DOSISH */
a687059c 2167
748a9306 2168#ifdef DUMP_FDS
35ff7856
GS
2169void
2170dump_fds(char *s)
ae986130
LW
2171{
2172 int fd;
2173 struct stat tmpstatbuf;
2174
760ac839 2175 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2176 for (fd = 0; fd < 32; fd++) {
6ad3d225 2177 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2178 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2179 }
760ac839 2180 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2181}
35ff7856 2182#endif /* DUMP_FDS */
ae986130 2183
fe14fcc3 2184#ifndef HAS_DUP2
fec02dd3 2185int
a687059c
LW
2186dup2(oldfd,newfd)
2187int oldfd;
2188int newfd;
2189{
a0d0e21e 2190#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2191 if (oldfd == newfd)
2192 return oldfd;
6ad3d225 2193 PerlLIO_close(newfd);
fec02dd3 2194 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2195#else
fc36a67e
PP
2196#define DUP2_MAX_FDS 256
2197 int fdtmp[DUP2_MAX_FDS];
79072805 2198 I32 fdx = 0;
ae986130
LW
2199 int fd;
2200
fe14fcc3 2201 if (oldfd == newfd)
fec02dd3 2202 return oldfd;
6ad3d225 2203 PerlLIO_close(newfd);
fc36a67e 2204 /* good enough for low fd's... */
6ad3d225 2205 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2206 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2207 PerlLIO_close(fd);
fc36a67e
PP
2208 fd = -1;
2209 break;
2210 }
ae986130 2211 fdtmp[fdx++] = fd;
fc36a67e 2212 }
ae986130 2213 while (fdx > 0)
6ad3d225 2214 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2215 return fd;
62b28dd9 2216#endif
a687059c
LW
2217}
2218#endif
2219
ff68c719
PP
2220
2221#ifdef HAS_SIGACTION
2222
2223Sighandler_t
8ac85365 2224rsignal(int signo, Sighandler_t handler)
ff68c719
PP
2225{
2226 struct sigaction act, oact;
2227
2228 act.sa_handler = handler;
2229 sigemptyset(&act.sa_mask);
2230 act.sa_flags = 0;
2231#ifdef SA_RESTART
2232 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2233#endif
85264bed
CS
2234#ifdef SA_NOCLDWAIT
2235 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2236 act.sa_flags |= SA_NOCLDWAIT;
2237#endif
ff68c719 2238 if (sigaction(signo, &act, &oact) == -1)
36477c24 2239 return SIG_ERR;
ff68c719 2240 else
36477c24 2241 return oact.sa_handler;
ff68c719
PP
2242}
2243
2244Sighandler_t
8ac85365 2245rsignal_state(int signo)
ff68c719
PP
2246{
2247 struct sigaction oact;
2248
2249 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2250 return SIG_ERR;
2251 else
2252 return oact.sa_handler;
2253}
2254
2255int
8ac85365 2256rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2257{
2258 struct sigaction act;
2259
2260 act.sa_handler = handler;
2261 sigemptyset(&act.sa_mask);
2262 act.sa_flags = 0;
2263#ifdef SA_RESTART
2264 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2265#endif
85264bed
CS
2266#ifdef SA_NOCLDWAIT
2267 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2268 act.sa_flags |= SA_NOCLDWAIT;
2269#endif
ff68c719
PP
2270 return sigaction(signo, &act, save);
2271}
2272
2273int
8ac85365 2274rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
2275{
2276 return sigaction(signo, save, (struct sigaction *)NULL);
2277}
2278
2279#else /* !HAS_SIGACTION */
2280
2281Sighandler_t
4e35701f 2282rsignal(int signo, Sighandler_t handler)
ff68c719 2283{
6ad3d225 2284 return PerlProc_signal(signo, handler);
ff68c719
PP
2285}
2286
2287static int sig_trapped;
2288
2289static
2290Signal_t
4e35701f 2291sig_trap(int signo)
ff68c719
PP
2292{
2293 sig_trapped++;
2294}
2295
2296Sighandler_t
4e35701f 2297rsignal_state(int signo)
ff68c719
PP
2298{
2299 Sighandler_t oldsig;
2300
2301 sig_trapped = 0;
6ad3d225
GS
2302 oldsig = PerlProc_signal(signo, sig_trap);
2303 PerlProc_signal(signo, oldsig);
ff68c719 2304 if (sig_trapped)
6ad3d225 2305 PerlProc_kill(getpid(), signo);
ff68c719
PP
2306 return oldsig;
2307}
2308
2309int
4e35701f 2310rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2311{
6ad3d225 2312 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2313 return (*save == SIG_ERR) ? -1 : 0;
2314}
2315
2316int
4e35701f 2317rsignal_restore(int signo, Sigsave_t *save)
ff68c719 2318{
6ad3d225 2319 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2320}
2321
2322#endif /* !HAS_SIGACTION */
2323
5f05dabc 2324 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
092bebab 2325#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
79072805 2326I32
6acef3b7 2327my_pclose(PerlIO *ptr)
a687059c 2328{
ff68c719 2329 Sigsave_t hstat, istat, qstat;
a687059c 2330 int status;
a0d0e21e 2331 SV **svp;
20188a90 2332 int pid;
1d3434b8 2333 int pid2;
03136e13
CS
2334 bool close_failed;
2335 int saved_errno;
2336#ifdef VMS
2337 int saved_vaxc_errno;
2338#endif
22fae026
TM
2339#ifdef WIN32
2340 int saved_win32_errno;
2341#endif
a687059c 2342
3280af22 2343 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2344 pid = (int)SvIVX(*svp);
a0d0e21e 2345 SvREFCNT_dec(*svp);
3280af22 2346 *svp = &PL_sv_undef;
ddcf38b7
IZ
2347#ifdef OS2
2348 if (pid == -1) { /* Opened by popen. */
2349 return my_syspclose(ptr);
2350 }
2351#endif
03136e13
CS
2352 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2353 saved_errno = errno;
2354#ifdef VMS
2355 saved_vaxc_errno = vaxc$errno;
2356#endif
22fae026
TM
2357#ifdef WIN32
2358 saved_win32_errno = GetLastError();
2359#endif
03136e13 2360 }
7c0587c8 2361#ifdef UTS
6ad3d225 2362 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2363#endif
ff68c719
PP
2364 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2365 rsignal_save(SIGINT, SIG_IGN, &istat);
2366 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2367 do {
1d3434b8
GS
2368 pid2 = wait4pid(pid, &status, 0);
2369 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2370 rsignal_restore(SIGHUP, &hstat);
2371 rsignal_restore(SIGINT, &istat);
2372 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2373 if (close_failed) {
2374 SETERRNO(saved_errno, saved_vaxc_errno);
2375 return -1;
2376 }
1d3434b8 2377 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2378}
4633a7c4
LW
2379#endif /* !DOSISH */
2380
8736538c 2381#if !defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(CYGWIN32)
79072805 2382I32
8ac85365 2383wait4pid(int pid, int *statusp, int flags)
20188a90 2384{
79072805
LW
2385 SV *sv;
2386 SV** svp;
fc36a67e 2387 char spid[TYPE_CHARS(int)];
20188a90
LW
2388
2389 if (!pid)
2390 return -1;
20188a90
LW
2391 if (pid > 0) {
2392 sprintf(spid, "%d", pid);
3280af22
NIS
2393 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2394 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2395 *statusp = SvIVX(*svp);
3280af22 2396 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2397 return pid;
2398 }
2399 }
2400 else {
79072805 2401 HE *entry;
20188a90 2402
3280af22
NIS
2403 hv_iterinit(PL_pidstatus);
2404 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2405 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2406 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2407 *statusp = SvIVX(sv);
20188a90 2408 sprintf(spid, "%d", pid);
3280af22 2409 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2410 return pid;
2411 }
2412 }
79072805 2413#ifdef HAS_WAITPID
367f3c24
IZ
2414# ifdef HAS_WAITPID_RUNTIME
2415 if (!HAS_WAITPID_RUNTIME)
2416 goto hard_way;
2417# endif
f55ee38a 2418 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2419#endif
2420#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2421 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2422#endif
2423#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2424 hard_way:
a0d0e21e
LW
2425 {
2426 I32 result;
2427 if (flags)
2428 croak("Can't do waitpid with flags");
2429 else {
76e3520e 2430 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2431 pidgone(result,*statusp);
2432 if (result < 0)
2433 *statusp = -1;
2434 }
2435 return result;
a687059c
LW
2436 }
2437#endif
a687059c 2438}
2d7a9237 2439#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2440
7c0587c8 2441void
de3bb511 2442/*SUPPRESS 590*/
8ac85365 2443pidgone(int pid, int status)
a687059c 2444{
79072805 2445 register SV *sv;
fc36a67e 2446 char spid[TYPE_CHARS(int)];
a687059c 2447
20188a90 2448 sprintf(spid, "%d", pid);
3280af22 2449 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2450 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2451 SvIVX(sv) = status;
20188a90 2452 return;
a687059c
LW
2453}
2454
55497cff 2455#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2456int pclose();
ddcf38b7
IZ
2457#ifdef HAS_FORK
2458int /* Cannot prototype with I32
2459 in os2ish.h. */
2460my_syspclose(ptr)
2461#else
79072805
LW
2462I32
2463my_pclose(ptr)
ddcf38b7 2464#endif
760ac839 2465PerlIO *ptr;
a687059c 2466{
760ac839
LW
2467 /* Needs work for PerlIO ! */
2468 FILE *f = PerlIO_findFILE(ptr);
2469 I32 result = pclose(f);
2470 PerlIO_releaseFILE(ptr,f);
2471 return result;
a687059c 2472}
7c0587c8 2473#endif
9f68db38
LW
2474
2475void
08105a92 2476repeatcpy(register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2477{
79072805 2478 register I32 todo;
08105a92 2479 register const char *frombase = from;
9f68db38
LW
2480
2481 if (len == 1) {
08105a92 2482 register const char c = *from;
9f68db38 2483 while (count-- > 0)
5926133d 2484 *to++ = c;
9f68db38
LW
2485 return;
2486 }
2487 while (count-- > 0) {
2488 for (todo = len; todo > 0; todo--) {
2489 *to++ = *from++;
2490 }
2491 from = frombase;
2492 }
2493}
0f85fab0 2494
463ee0b2 2495U32
22c35a8c 2496cast_ulong(double f)
0f85fab0
LW
2497{
2498 long along;
2499
27e2fb84 2500#if CASTFLAGS & 2
34de22dd
LW
2501# define BIGDOUBLE 2147483648.0
2502 if (f >= BIGDOUBLE)
2503 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2504#endif
0f85fab0
LW
2505 if (f >= 0.0)
2506 return (unsigned long)f;
2507 along = (long)f;
2508 return (unsigned long)along;
2509}
ed6116ce 2510# undef BIGDOUBLE
5d94fbed 2511
5d94fbed
AD
2512/* Unfortunately, on some systems the cast_uv() function doesn't
2513 work with the system-supplied definition of ULONG_MAX. The
2514 comparison (f >= ULONG_MAX) always comes out true. It must be a
2515 problem with the compiler constant folding.
2516
2517 In any case, this workaround should be fine on any two's complement
2518 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2519 ccflags.
2520 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2521*/
1eb770ff
PP
2522
2523/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2524 of LONG_(MIN/MAX).
2525 -- Kenneth Albanowski <kjahds@kjahds.com>
2526*/
2527
20cec16a
PP
2528#ifndef MY_UV_MAX
2529# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2530#endif
2531
ed6116ce 2532I32
22c35a8c 2533cast_i32(double f)
ed6116ce 2534{
20cec16a
PP
2535 if (f >= I32_MAX)
2536 return (I32) I32_MAX;
2537 if (f <= I32_MIN)
2538 return (I32) I32_MIN;
ed6116ce
LW
2539 return (I32) f;
2540}
a0d0e21e
LW
2541
2542IV
22c35a8c 2543cast_iv(double f)
a0d0e21e 2544{
25da4f38
IZ
2545 if (f >= IV_MAX) {
2546 UV uv;
2547
2548 if (f >= (double)UV_MAX)
2549 return (IV) UV_MAX;
2550 uv = (UV) f;
2551 return (IV)uv;
2552 }
20cec16a
PP
2553 if (f <= IV_MIN)
2554 return (IV) IV_MIN;
a0d0e21e
LW
2555 return (IV) f;
2556}
5d94fbed
AD
2557
2558UV
22c35a8c 2559cast_uv(double f)
5d94fbed 2560{
20cec16a
PP
2561 if (f >= MY_UV_MAX)
2562 return (UV) MY_UV_MAX;
25da4f38
IZ
2563 if (f < 0) {
2564 IV iv;
2565
2566 if (f < IV_MIN)
2567 return (UV)IV_MIN;
2568 iv = (IV) f;
2569 return (UV) iv;
2570 }
5d94fbed
AD
2571 return (UV) f;
2572}
2573
fe14fcc3 2574#ifndef HAS_RENAME
79072805 2575I32
22c35a8c 2576same_dirent(char *a, char *b)
62b28dd9 2577{
93a17b20
LW
2578 char *fa = strrchr(a,'/');
2579 char *fb = strrchr(b,'/');
62b28dd9
LW
2580 struct stat tmpstatbuf1;
2581 struct stat tmpstatbuf2;
46fc3d4c 2582 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2583
2584 if (fa)
2585 fa++;
2586 else
2587 fa = a;
2588 if (fb)
2589 fb++;
2590 else
2591 fb = b;
2592 if (strNE(a,b))
2593 return FALSE;
2594 if (fa == a)
46fc3d4c 2595 sv_setpv(tmpsv, ".");
62b28dd9 2596 else
46fc3d4c 2597 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2598 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2599 return FALSE;
2600 if (fb == b)
46fc3d4c 2601 sv_setpv(tmpsv, ".");
62b28dd9 2602 else
46fc3d4c 2603 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2604 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2605 return FALSE;
2606 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2607 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2608}
fe14fcc3
LW
2609#endif /* !HAS_RENAME */
2610
55497cff 2611UV
4f19785b
WSI
2612scan_bin(char *start, I32 len, I32 *retlen)
2613{
2614 register char *s = start;
2615 register UV retval = 0;
2616 bool overflowed = FALSE;
2617 while (len && *s >= '0' && *s <= '1') {
2618 register UV n = retval << 1;
2619 if (!overflowed && (n >> 1) != retval) {
2620 warn("Integer overflow in binary number");
2621 overflowed = TRUE;
2622 }
2623 retval = n | (*s++ - '0');
2624 len--;
2625 }
6529e8bd 2626 if (len && (*s >= '2' && *s <= '9')) {
4f19785b
WSI
2627 dTHR;
2628 if (ckWARN(WARN_UNSAFE))
399388f4 2629 warner(WARN_UNSAFE, "Illegal binary digit '%c' ignored", *s);
4f19785b
WSI
2630 }
2631 *retlen = s - start;
2632 return retval;
2633}
2634UV
8ac85365 2635scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2636{
2637 register char *s = start;
55497cff
PP
2638 register UV retval = 0;
2639 bool overflowed = FALSE;
fe14fcc3 2640
748a9306 2641 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2642 register UV n = retval << 3;
2643 if (!overflowed && (n >> 3) != retval) {
2644 warn("Integer overflow in octal number");
2645 overflowed = TRUE;
2646 }
2647 retval = n | (*s++ - '0');
748a9306 2648 len--;
fe14fcc3 2649 }
d008e5eb
GS
2650 if (len && (*s == '8' || *s == '9')) {
2651 dTHR;
2652 if (ckWARN(WARN_OCTAL))
399388f4 2653 warner(WARN_OCTAL, "Illegal octal digit '%c' ignored", *s);
d008e5eb 2654 }
fe14fcc3
LW
2655 *retlen = s - start;
2656 return retval;
2657}
2658
71be2cbc 2659UV
8ac85365 2660scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2661{
2662 register char *s = start;
55497cff
PP
2663 register UV retval = 0;
2664 bool overflowed = FALSE;
6ff81951 2665 char *tmp = s;
a0ed51b3 2666 register UV n;
fe14fcc3 2667
a0ed51b3
LW
2668 while (len-- && *s) {
2669 tmp = strchr((char *) PL_hexdigit, *s++);
2670 if (!tmp) {
e3fdf988 2671 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
a0ed51b3
LW
2672 continue;
2673 else {
d008e5eb 2674 dTHR;
a0ed51b3 2675 --s;
599cee73 2676 if (ckWARN(WARN_UNSAFE))
399388f4 2677 warner(WARN_UNSAFE,"Illegal hex digit '%c' ignored", *s);
a0ed51b3
LW
2678 break;
2679 }
2680 }
2681 n = retval << 4;
55497cff
PP
2682 if (!overflowed && (n >> 4) != retval) {
2683 warn("Integer overflow in hex number");
2684 overflowed = TRUE;
2685 }
3280af22 2686 retval = n | ((tmp - PL_hexdigit) & 15);
6ff81951 2687 }
fe14fcc3
LW
2688 *retlen = s - start;
2689 return retval;
2690}
760ac839 2691
491527d0
GS
2692char*
2693find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags)
2694{
2695 dTHR;
2696 char *xfound = Nullch;
2697 char *xfailed = Nullch;
0f31cffe 2698 char tmpbuf[MAXPATHLEN];
491527d0
GS
2699 register char *s;
2700 I32 len;
2701 int retval;
2702#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2703# define SEARCH_EXTS ".bat", ".cmd", NULL
2704# define MAX_EXT_LEN 4
2705#endif
2706#ifdef OS2
2707# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2708# define MAX_EXT_LEN 4
2709#endif
2710#ifdef VMS
2711# define SEARCH_EXTS ".pl", ".com", NULL
2712# define MAX_EXT_LEN 4
2713#endif
2714 /* additional extensions to try in each dir if scriptname not found */
2715#ifdef SEARCH_EXTS
2716 char *exts[] = { SEARCH_EXTS };
2717 char **ext = search_ext ? search_ext : exts;
2718 int extidx = 0, i = 0;
2719 char *curext = Nullch;
2720#else
2721# define MAX_EXT_LEN 0
2722#endif
2723
2724 /*
2725 * If dosearch is true and if scriptname does not contain path
2726 * delimiters, search the PATH for scriptname.
2727 *
2728 * If SEARCH_EXTS is also defined, will look for each
2729 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2730 * while searching the PATH.
2731 *
2732 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2733 * proceeds as follows:
2734 * If DOSISH or VMSISH:
2735 * + look for ./scriptname{,.foo,.bar}
2736 * + search the PATH for scriptname{,.foo,.bar}
2737 *
2738 * If !DOSISH:
2739 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2740 * this will not look in '.' if it's not in the PATH)
2741 */
84486fc6 2742 tmpbuf[0] = '\0';
491527d0
GS
2743
2744#ifdef VMS
2745# ifdef ALWAYS_DEFTYPES
2746 len = strlen(scriptname);
2747 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2748 int hasdir, idx = 0, deftypes = 1;
2749 bool seen_dot = 1;
2750
2751 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2752# else
2753 if (dosearch) {
2754 int hasdir, idx = 0, deftypes = 1;
2755 bool seen_dot = 1;
2756
2757 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2758# endif
2759 /* The first time through, just add SEARCH_EXTS to whatever we
2760 * already have, so we can check for default file types. */
2761 while (deftypes ||
84486fc6 2762 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
2763 {
2764 if (deftypes) {
2765 deftypes = 0;
84486fc6 2766 *tmpbuf = '\0';
491527d0 2767 }
84486fc6
GS
2768 if ((strlen(tmpbuf) + strlen(scriptname)
2769 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2770 continue; /* don't search dir with too-long name */
84486fc6 2771 strcat(tmpbuf, scriptname);
491527d0
GS
2772#else /* !VMS */
2773
2774#ifdef DOSISH
2775 if (strEQ(scriptname, "-"))
2776 dosearch = 0;
2777 if (dosearch) { /* Look in '.' first. */
2778 char *cur = scriptname;
2779#ifdef SEARCH_EXTS
2780 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2781 while (ext[i])
2782 if (strEQ(ext[i++],curext)) {
2783 extidx = -1; /* already has an ext */
2784 break;
2785 }
2786 do {
2787#endif
2788 DEBUG_p(PerlIO_printf(Perl_debug_log,
2789 "Looking for %s\n",cur));
017f25f1
IZ
2790 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2791 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
2792 dosearch = 0;
2793 scriptname = cur;
2794#ifdef SEARCH_EXTS
2795 break;
2796#endif
2797 }
2798#ifdef SEARCH_EXTS
2799 if (cur == scriptname) {
2800 len = strlen(scriptname);
84486fc6 2801 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2802 break;
84486fc6 2803 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
2804 }
2805 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2806 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
2807#endif
2808 }
2809#endif
2810
2811 if (dosearch && !strchr(scriptname, '/')
2812#ifdef DOSISH
2813 && !strchr(scriptname, '\\')
2814#endif
2815 && (s = PerlEnv_getenv("PATH"))) {
2816 bool seen_dot = 0;
2817
3280af22
NIS
2818 PL_bufend = s + strlen(s);
2819 while (s < PL_bufend) {
491527d0
GS
2820#if defined(atarist) || defined(DOSISH)
2821 for (len = 0; *s
2822# ifdef atarist
2823 && *s != ','
2824# endif
2825 && *s != ';'; len++, s++) {
84486fc6
GS
2826 if (len < sizeof tmpbuf)
2827 tmpbuf[len] = *s;
491527d0 2828 }
84486fc6
GS
2829 if (len < sizeof tmpbuf)
2830 tmpbuf[len] = '\0';
491527d0 2831#else /* ! (atarist || DOSISH) */
3280af22 2832 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
2833 ':',
2834 &len);
2835#endif /* ! (atarist || DOSISH) */
3280af22 2836 if (s < PL_bufend)
491527d0 2837 s++;
84486fc6 2838 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
2839 continue; /* don't search dir with too-long name */
2840 if (len
61ae2fbf 2841#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
2842 && tmpbuf[len - 1] != '/'
2843 && tmpbuf[len - 1] != '\\'
491527d0
GS
2844#endif
2845 )
84486fc6
GS
2846 tmpbuf[len++] = '/';
2847 if (len == 2 && tmpbuf[0] == '.')
491527d0 2848 seen_dot = 1;
84486fc6 2849 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
2850#endif /* !VMS */
2851
2852#ifdef SEARCH_EXTS
84486fc6 2853 len = strlen(tmpbuf);
491527d0
GS
2854 if (extidx > 0) /* reset after previous loop */
2855 extidx = 0;
2856 do {
2857#endif
84486fc6 2858 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 2859 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
2860 if (S_ISDIR(PL_statbuf.st_mode)) {
2861 retval = -1;
2862 }
491527d0
GS
2863#ifdef SEARCH_EXTS
2864 } while ( retval < 0 /* not there */
2865 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 2866 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
2867 );
2868#endif
2869 if (retval < 0)
2870 continue;
3280af22
NIS
2871 if (S_ISREG(PL_statbuf.st_mode)
2872 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 2873#ifndef DOSISH
3280af22 2874 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
2875#endif
2876 )
2877 {
84486fc6 2878 xfound = tmpbuf; /* bingo! */
491527d0
GS
2879 break;
2880 }
2881 if (!xfailed)
84486fc6 2882 xfailed = savepv(tmpbuf);
491527d0
GS
2883 }
2884#ifndef DOSISH
017f25f1
IZ
2885 if (!xfound && !seen_dot && !xfailed &&
2886 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
2887 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
2888#endif
2889 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
2890 if (!xfound) {
2891 if (flags & 1) { /* do or die? */
2892 croak("Can't %s %s%s%s",
2893 (xfailed ? "execute" : "find"),
2894 (xfailed ? xfailed : scriptname),
2895 (xfailed ? "" : " on PATH"),
2896 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2897 }
2898 scriptname = Nullch;
2899 }
491527d0
GS
2900 if (xfailed)
2901 Safefree(xfailed);
2902 scriptname = xfound;
2903 }
9ccb31f9 2904 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
2905}
2906
2907
11343788 2908#ifdef USE_THREADS
12ca11f6
MB
2909#ifdef FAKE_THREADS
2910/* Very simplistic scheduler for now */
2911void
2912schedule(void)
2913{
c7848ba1 2914 thr = thr->i.next_run;
12ca11f6
MB
2915}
2916
2917void
22c35a8c 2918perl_cond_init(perl_cond *cp)
12ca11f6
MB
2919{
2920 *cp = 0;
2921}
2922
2923void
22c35a8c 2924perl_cond_signal(perl_cond *cp)
12ca11f6 2925{
51dd5992 2926 perl_os_thread t;
12ca11f6
MB
2927 perl_cond cond = *cp;
2928
2929 if (!cond)
2930 return;
2931 t = cond->thread;
2932 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2933 t->i.next_run = thr->i.next_run;
2934 thr->i.next_run->i.prev_run = t;
2935 t->i.prev_run = thr;
2936 thr->i.next_run = t;
2937 thr->i.wait_queue = 0;
12ca11f6
MB
2938 /* Remove from the wait queue */
2939 *cp = cond->next;
2940 Safefree(cond);
2941}
2942
2943void
22c35a8c 2944perl_cond_broadcast(perl_cond *cp)
12ca11f6 2945{
51dd5992 2946 perl_os_thread t;
12ca11f6
MB
2947 perl_cond cond, cond_next;
2948
2949 for (cond = *cp; cond; cond = cond_next) {
2950 t = cond->thread;
2951 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2952 t->i.next_run = thr->i.next_run;
2953 thr->i.next_run->i.prev_run = t;
2954 t->i.prev_run = thr;
2955 thr->i.next_run = t;
2956 thr->i.wait_queue = 0;
12ca11f6
MB
2957 /* Remove from the wait queue */
2958 cond_next = cond->next;
2959 Safefree(cond);
2960 }
2961 *cp = 0;
2962}
2963
2964void
22c35a8c 2965perl_cond_wait(perl_cond *cp)
12ca11f6
MB
2966{
2967 perl_cond cond;
2968
c7848ba1 2969 if (thr->i.next_run == thr)
12ca11f6
MB
2970 croak("panic: perl_cond_wait called by last runnable thread");
2971
0f15f207 2972 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2973 cond->thread = thr;
2974 cond->next = *cp;
2975 *cp = cond;
c7848ba1 2976 thr->i.wait_queue = cond;
12ca11f6 2977 /* Remove ourselves from runnable queue */
c7848ba1
MB
2978 thr->i.next_run->i.prev_run = thr->i.prev_run;
2979 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2980}
2981#endif /* FAKE_THREADS */
2982
0d85d877 2983#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 2984struct perl_thread *
11343788
MB
2985getTHR _((void))
2986{
2987 pthread_addr_t t;
2988
6b88bc9c 2989 if (pthread_getspecific(PL_thr_key, &t))
11343788 2990 croak("panic: pthread_getspecific");
52e1cb5e 2991 return (struct perl_thread *) t;
11343788 2992}
0d85d877 2993#endif
f93b4edd
MB
2994
2995MAGIC *
8ac85365 2996condpair_magic(SV *sv)
f93b4edd
MB
2997{
2998 MAGIC *mg;
2999
3000 SvUPGRADE(sv, SVt_PVMG);
3001 mg = mg_find(sv, 'm');
3002 if (!mg) {
3003 condpair_t *cp;
3004
3005 New(53, cp, 1, condpair_t);
3006 MUTEX_INIT(&cp->mutex);
3007 COND_INIT(&cp->owner_cond);
3008 COND_INIT(&cp->cond);
3009 cp->owner = 0;
28a8573f 3010 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3011 mg = mg_find(sv, 'm');
3012 if (mg) {
3013 /* someone else beat us to initialising it */
28a8573f 3014 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3015 MUTEX_DESTROY(&cp->mutex);
3016 COND_DESTROY(&cp->owner_cond);
3017 COND_DESTROY(&cp->cond);
3018 Safefree(cp);
3019 }
3020 else {
3021 sv_magic(sv, Nullsv, 'm', 0, 0);
3022 mg = SvMAGIC(sv);
3023 mg->mg_ptr = (char *)cp;
565764a8 3024 mg->mg_len = sizeof(cp);
28a8573f 3025 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3026 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3027 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3028 }
3029 }
3030 return mg;
3031}
a863c7d1
MB
3032
3033/*
199100c8
MB
3034 * Make a new perl thread structure using t as a prototype. Some of the
3035 * fields for the new thread are copied from the prototype thread, t,
3036 * so t should not be running in perl at the time this function is
3037 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3038 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3039 */
52e1cb5e
JH
3040struct perl_thread *
3041new_struct_thread(struct perl_thread *t)
a863c7d1 3042{
52e1cb5e 3043 struct perl_thread *thr;
a863c7d1 3044 SV *sv;
199100c8
MB
3045 SV **svp;
3046 I32 i;
3047
79cb57f6 3048 sv = newSVpvn("", 0);
52e1cb5e
JH
3049 SvGROW(sv, sizeof(struct perl_thread) + 1);
3050 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3051 thr = (Thread) SvPVX(sv);
949ced2d 3052#ifdef DEBUGGING
52e1cb5e 3053 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3054 PL_markstack = 0;
3055 PL_scopestack = 0;
3056 PL_savestack = 0;
3057 PL_retstack = 0;
3058 PL_dirty = 0;
3059 PL_localizing = 0;
949ced2d
GS
3060 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3061#else
3062 Zero(thr, 1, struct perl_thread);
3063#endif
199100c8 3064
312caa8e
CS
3065 PL_protect = FUNC_NAME_TO_PTR(default_protect);
3066
199100c8 3067 thr->oursv = sv;
d55594ae 3068 init_stacks(ARGS);
a863c7d1 3069
533c011a 3070 PL_curcop = &PL_compiling;
199100c8 3071 thr->cvcache = newHV();
54b9620d 3072 thr->threadsv = newAV();
a863c7d1 3073 thr->specific = newAV();
79cb57f6 3074 thr->errsv = newSVpvn("", 0);
38a03e6e 3075 thr->errhv = newHV();
a863c7d1
MB
3076 thr->flags = THRf_R_JOINABLE;
3077 MUTEX_INIT(&thr->mutex);
199100c8 3078
d55594ae
GS
3079 /* top_env needs to be non-zero. It points to an area
3080 in which longjmp() stuff is stored, as C callstack
3081 info there at least is thread specific this has to
3082 be per-thread. Otherwise a 'die' in a thread gives
3083 that thread the C stack of last thread to do an eval {}!
3084 See comments in scope.h
3085 Initialize top entry (as in perl.c for main thread)
3086 */
533c011a
NIS
3087 PL_start_env.je_prev = NULL;
3088 PL_start_env.je_ret = -1;
3089 PL_start_env.je_mustcatch = TRUE;
3090 PL_top_env = &PL_start_env;
3091
faef0170 3092 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3093 PL_restartop = 0;
3094
b099ddc0
GS
3095 PL_statname = NEWSV(66,0);
3096 PL_maxscream = -1;
3097 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
3098 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
3099 PL_regindent = 0;
3100 PL_reginterp_cnt = 0;
3101 PL_lastscream = Nullsv;
3102 PL_screamfirst = 0;
3103 PL_screamnext = 0;
3104 PL_reg_start_tmp = 0;
3105 PL_reg_start_tmpl = 0;
3106
3107 /* parent thread's data needs to be locked while we make copy */
3108 MUTEX_LOCK(&t->mutex);
3109
312caa8e
CS
3110 PL_protect = t->Tprotect;
3111
b099ddc0
GS
3112 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3113 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3114 PL_curstash = t->Tcurstash; /* always be set to main? */
3115
6b88bc9c 3116 PL_tainted = t->Ttainted;
84fee439
NIS
3117 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3118 PL_nrs = newSVsv(t->Tnrs);
3119 PL_rs = SvREFCNT_inc(PL_nrs);
3120 PL_last_in_gv = Nullgv;
3121 PL_ofslen = t->Tofslen;
3122 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3123 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3124 PL_chopset = t->Tchopset;
3125 PL_formtarget = newSVsv(t->Tformtarget);
3126 PL_bodytarget = newSVsv(t->Tbodytarget);
3127 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3128
54b9620d
MB
3129 /* Initialise all per-thread SVs that the template thread used */
3130 svp = AvARRAY(t->threadsv);
93965878 3131 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3132 if (*svp && *svp != &PL_sv_undef) {
199100c8 3133 SV *sv = newSVsv(*svp);
54b9620d 3134 av_store(thr->threadsv, i, sv);
533c011a 3135 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3136 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3137 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
3138 }
3139 }
940cb80d 3140 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3141
533c011a
NIS
3142 MUTEX_LOCK(&PL_threads_mutex);
3143 PL_nthreads++;
3144 thr->tid = ++PL_threadnum;
199100c8
MB
3145 thr->next = t->next;
3146 thr->prev = t;
3147 t->next = thr;
3148 thr->next->prev = thr;
533c011a 3149 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3150
b099ddc0
GS
3151 /* done copying parent's state */
3152 MUTEX_UNLOCK(&t->mutex);
3153
a863c7d1
MB
3154#ifdef HAVE_THREAD_INTERN
3155 init_thread_intern(thr);
a863c7d1 3156#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3157 return thr;
3158}
11343788 3159#endif /* USE_THREADS */
760ac839
LW
3160
3161#ifdef HUGE_VAL
3162/*
3163 * This hack is to force load of "huge" support from libm.a
3164 * So it is in perl for (say) POSIX to use.
3165 * Needed for SunOS with Sun's 'acc' for example.
3166 */
3167double
8ac85365 3168Perl_huge(void)
760ac839
LW
3169{
3170 return HUGE_VAL;
3171}
3172#endif
4e35701f 3173
22239a37
NIS
3174#ifdef PERL_GLOBAL_STRUCT
3175struct perl_vars *
3176Perl_GetVars(void)
3177{
533c011a 3178 return &PL_Vars;
22239a37 3179}
31fb1209
NIS
3180#endif
3181
3182char **
3183get_op_names(void)
3184{
22c35a8c 3185 return PL_op_name;
31fb1209
NIS
3186}
3187
3188char **
3189get_op_descs(void)
3190{
22c35a8c 3191 return PL_op_desc;
31fb1209 3192}
9e6b2b00
GS
3193
3194char *
3195get_no_modify(void)
3196{
22c35a8c 3197 return (char*)PL_no_modify;
9e6b2b00
GS
3198}
3199
3200U32 *
3201get_opargs(void)
3202{
22c35a8c 3203 return PL_opargs;
9e6b2b00 3204}
51aa15f3 3205
51aa15f3
GS
3206SV **
3207get_specialsv_list(void)
3208{
3280af22 3209 return PL_specialsv_list;
f55ee38a 3210}
dc9e4912 3211
a6c40364
GS
3212#ifndef HAS_GETENV_LEN
3213char *
3214getenv_len(char *env_elem, unsigned long *len)
3215{
3216 char *env_trans = PerlEnv_getenv(env_elem);
3217 if (env_trans)
3218 *len = strlen(env_trans);
3219 return env_trans;
f675dbe5
CB
3220}
3221#endif
3222
dc9e4912
GS
3223
3224MGVTBL*
3225get_vtbl(int vtbl_id)
3226{
3227 MGVTBL* result = Null(MGVTBL*);
3228
3229 switch(vtbl_id) {
3230 case want_vtbl_sv:
3231 result = &PL_vtbl_sv;
3232 break;
3233 case want_vtbl_env:
3234 result = &PL_vtbl_env;
3235 break;
3236 case want_vtbl_envelem:
3237 result = &PL_vtbl_envelem;
3238 break;
3239 case want_vtbl_sig:
3240 result = &PL_vtbl_sig;
3241 break;
3242 case want_vtbl_sigelem:
3243 result = &PL_vtbl_sigelem;
3244 break;
3245 case want_vtbl_pack:
3246 result = &PL_vtbl_pack;
3247 break;
3248 case want_vtbl_packelem:
3249 result = &PL_vtbl_packelem;
3250 break;
3251 case want_vtbl_dbline:
3252 result = &PL_vtbl_dbline;
3253 break;
3254 case want_vtbl_isa:
3255 result = &PL_vtbl_isa;
3256 break;
3257 case want_vtbl_isaelem:
3258 result = &PL_vtbl_isaelem;
3259 break;
3260 case want_vtbl_arylen:
3261 result = &PL_vtbl_arylen;
3262 break;
3263 case want_vtbl_glob:
3264 result = &PL_vtbl_glob;
3265 break;
3266 case want_vtbl_mglob:
3267 result = &PL_vtbl_mglob;
3268 break;
3269 case want_vtbl_nkeys:
3270 result = &PL_vtbl_nkeys;
3271 break;
3272 case want_vtbl_taint:
3273 result = &PL_vtbl_taint;
3274 break;
3275 case want_vtbl_substr:
3276 result = &PL_vtbl_substr;
3277 break;
3278 case want_vtbl_vec:
3279 result = &PL_vtbl_vec;
3280 break;
3281 case want_vtbl_pos:
3282 result = &PL_vtbl_pos;
3283 break;
3284 case want_vtbl_bm:
3285 result = &PL_vtbl_bm;
3286 break;
3287 case want_vtbl_fm:
3288 result = &PL_vtbl_fm;
3289 break;
3290 case want_vtbl_uvar:
3291 result = &PL_vtbl_uvar;
3292 break;
3293#ifdef USE_THREADS
3294 case want_vtbl_mutex:
3295 result = &PL_vtbl_mutex;
3296 break;
3297#endif
3298 case want_vtbl_defelem:
3299 result = &PL_vtbl_defelem;
3300 break;
3301 case want_vtbl_regexp:
3302 result = &PL_vtbl_regexp;
3303 break;
3304 case want_vtbl_regdata:
3305 result = &PL_vtbl_regdata;
3306 break;
3307 case want_vtbl_regdatum:
3308 result = &PL_vtbl_regdatum;
3309 break;
3c90161d 3310#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3311 case want_vtbl_collxfrm:
3312 result = &PL_vtbl_collxfrm;
3313 break;
3c90161d 3314#endif
dc9e4912
GS
3315 case want_vtbl_amagic:
3316 result = &PL_vtbl_amagic;
3317 break;
3318 case want_vtbl_amagicelem:
3319 result = &PL_vtbl_amagicelem;
3320 break;
810b8aa5
GS
3321 case want_vtbl_backref:
3322 result = &PL_vtbl_backref;
3323 break;
dc9e4912
GS
3324 }
3325 return result;
3326}
3327
767df6a1
JH
3328I32
3329my_fflush_all(void)
3330{
3331#ifdef FFLUSH_NULL
ce720889 3332 return PerlIO_flush(NULL);
767df6a1
JH
3333#else
3334 long open_max = -1;
ed39a0f2 3335# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
767df6a1
JH
3336# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3337 open_max = sysconf(_SC_OPEN_MAX);
3338# else
3339# ifdef FOPEN_MAX
3340# open_max = FOPEN_MAX;
3341# else
3342# ifdef OPEN_MAX
3343# open_max = OPEN_MAX;
3344# else
3345# ifdef _NFILE
3346# open_max = _NFILE;
3347# endif
3348# endif
3349# endif
3350# endif
3351 if (open_max > 0) {
3352 long i;
3353 for (i = 0; i < open_max; i++)
ce720889 3354 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH
3355 return 0;
3356 }
3357# endif
3358 SETERRNO(EBADF,RMS$_IFI);
3359 return EOF;
3360#endif
3361}