Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 | 7 | * |
8d063cd8 | 8 | */ |
a0d0e21e LW |
9 | |
10 | /* | |
11 | * "Very useful, no doubt, that was to Saruman; yet it seems that he was | |
12 | * not content." --Gandalf | |
13 | */ | |
8d063cd8 | 14 | |
8d063cd8 | 15 | #include "EXTERN.h" |
864dbfa3 | 16 | #define PERL_IN_UTIL_C |
8d063cd8 | 17 | #include "perl.h" |
62b28dd9 | 18 | |
64ca3a65 | 19 | #ifndef PERL_MICRO |
e1dfb34b | 20 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 21 | #include <signal.h> |
62b28dd9 | 22 | #endif |
a687059c | 23 | |
36477c24 | 24 | #ifndef SIG_ERR |
25 | # define SIG_ERR ((Sighandler_t) -1) | |
26 | #endif | |
64ca3a65 | 27 | #endif |
36477c24 | 28 | |
a687059c LW |
29 | #ifdef I_VFORK |
30 | # include <vfork.h> | |
31 | #endif | |
32 | ||
94b6baf5 AD |
33 | /* Put this after #includes because fork and vfork prototypes may |
34 | conflict. | |
35 | */ | |
36 | #ifndef HAS_VFORK | |
37 | # define vfork fork | |
38 | #endif | |
39 | ||
ff68c719 | 40 | #ifdef I_SYS_WAIT |
41 | # include <sys/wait.h> | |
42 | #endif | |
43 | ||
8d063cd8 | 44 | #define FLUSH |
8d063cd8 | 45 | |
a0d0e21e | 46 | #ifdef LEAKTEST |
a0d0e21e | 47 | |
8c52afec IZ |
48 | long xcount[MAXXCOUNT]; |
49 | long lastxcount[MAXXCOUNT]; | |
50 | long xycount[MAXXCOUNT][MAXYCOUNT]; | |
51 | long lastxycount[MAXXCOUNT][MAXYCOUNT]; | |
52 | ||
a0d0e21e | 53 | #endif |
a863c7d1 | 54 | |
16cebae2 GS |
55 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
56 | # define FD_CLOEXEC 1 /* NeXT needs this */ | |
57 | #endif | |
58 | ||
a687059c LW |
59 | /* NOTE: Do not call the next three routines directly. Use the macros |
60 | * in handy.h, so that we can easily redefine everything to do tracking of | |
61 | * allocated hunks back to the original New to track down any memory leaks. | |
20cec16a | 62 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
a687059c LW |
63 | */ |
64 | ||
26fa51c3 AMS |
65 | /* paranoid version of system's malloc() */ |
66 | ||
bd4080b3 | 67 | Malloc_t |
4f63d024 | 68 | Perl_safesysmalloc(MEM_SIZE size) |
8d063cd8 | 69 | { |
54aff467 | 70 | dTHX; |
bd4080b3 | 71 | Malloc_t ptr; |
55497cff | 72 | #ifdef HAS_64K_LIMIT |
62b28dd9 | 73 | if (size > 0xffff) { |
bf49b057 | 74 | PerlIO_printf(Perl_error_log, |
16cebae2 | 75 | "Allocation too large: %lx\n", size) FLUSH; |
54aff467 | 76 | my_exit(1); |
62b28dd9 | 77 | } |
55497cff | 78 | #endif /* HAS_64K_LIMIT */ |
34de22dd LW |
79 | #ifdef DEBUGGING |
80 | if ((long)size < 0) | |
4f63d024 | 81 | Perl_croak_nocontext("panic: malloc"); |
34de22dd | 82 | #endif |
12ae5dfc | 83 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 84 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 85 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
8d063cd8 LW |
86 | if (ptr != Nullch) |
87 | return ptr; | |
3280af22 | 88 | else if (PL_nomemok) |
7c0587c8 | 89 | return Nullch; |
8d063cd8 | 90 | else { |
bf49b057 | 91 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 92 | my_exit(1); |
4e35701f | 93 | return Nullch; |
8d063cd8 LW |
94 | } |
95 | /*NOTREACHED*/ | |
96 | } | |
97 | ||
f2517201 | 98 | /* paranoid version of system's realloc() */ |
8d063cd8 | 99 | |
bd4080b3 | 100 | Malloc_t |
4f63d024 | 101 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
8d063cd8 | 102 | { |
54aff467 | 103 | dTHX; |
bd4080b3 | 104 | Malloc_t ptr; |
9a34ef1d | 105 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
6ad3d225 | 106 | Malloc_t PerlMem_realloc(); |
ecfc5424 | 107 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
8d063cd8 | 108 | |
a1d180c4 | 109 | #ifdef HAS_64K_LIMIT |
5f05dabc | 110 | if (size > 0xffff) { |
bf49b057 | 111 | PerlIO_printf(Perl_error_log, |
5f05dabc | 112 | "Reallocation too large: %lx\n", size) FLUSH; |
54aff467 | 113 | my_exit(1); |
5f05dabc | 114 | } |
55497cff | 115 | #endif /* HAS_64K_LIMIT */ |
7614df0c | 116 | if (!size) { |
f2517201 | 117 | safesysfree(where); |
7614df0c JD |
118 | return NULL; |
119 | } | |
120 | ||
378cc40b | 121 | if (!where) |
f2517201 | 122 | return safesysmalloc(size); |
34de22dd LW |
123 | #ifdef DEBUGGING |
124 | if ((long)size < 0) | |
4f63d024 | 125 | Perl_croak_nocontext("panic: realloc"); |
34de22dd | 126 | #endif |
12ae5dfc | 127 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
da927450 | 128 | PERL_ALLOC_CHECK(ptr); |
a1d180c4 | 129 | |
97835f67 JH |
130 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
131 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); | |
79072805 | 132 | |
8d063cd8 LW |
133 | if (ptr != Nullch) |
134 | return ptr; | |
3280af22 | 135 | else if (PL_nomemok) |
7c0587c8 | 136 | return Nullch; |
8d063cd8 | 137 | else { |
bf49b057 | 138 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 139 | my_exit(1); |
4e35701f | 140 | return Nullch; |
8d063cd8 LW |
141 | } |
142 | /*NOTREACHED*/ | |
143 | } | |
144 | ||
f2517201 | 145 | /* safe version of system's free() */ |
8d063cd8 | 146 | |
54310121 | 147 | Free_t |
4f63d024 | 148 | Perl_safesysfree(Malloc_t where) |
8d063cd8 | 149 | { |
155aba94 | 150 | #ifdef PERL_IMPLICIT_SYS |
54aff467 | 151 | dTHX; |
155aba94 | 152 | #endif |
97835f67 | 153 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 154 | if (where) { |
de3bb511 | 155 | /*SUPPRESS 701*/ |
6ad3d225 | 156 | PerlMem_free(where); |
378cc40b | 157 | } |
8d063cd8 LW |
158 | } |
159 | ||
f2517201 | 160 | /* safe version of system's calloc() */ |
1050c9ca | 161 | |
bd4080b3 | 162 | Malloc_t |
4f63d024 | 163 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 164 | { |
54aff467 | 165 | dTHX; |
bd4080b3 | 166 | Malloc_t ptr; |
1050c9ca | 167 | |
55497cff | 168 | #ifdef HAS_64K_LIMIT |
5f05dabc | 169 | if (size * count > 0xffff) { |
bf49b057 | 170 | PerlIO_printf(Perl_error_log, |
5f05dabc | 171 | "Allocation too large: %lx\n", size * count) FLUSH; |
54aff467 | 172 | my_exit(1); |
5f05dabc | 173 | } |
55497cff | 174 | #endif /* HAS_64K_LIMIT */ |
1050c9ca | 175 | #ifdef DEBUGGING |
176 | if ((long)size < 0 || (long)count < 0) | |
4f63d024 | 177 | Perl_croak_nocontext("panic: calloc"); |
1050c9ca | 178 | #endif |
0b7c1c42 | 179 | size *= count; |
12ae5dfc | 180 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 181 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 182 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size)); |
1050c9ca | 183 | if (ptr != Nullch) { |
184 | memset((void*)ptr, 0, size); | |
185 | return ptr; | |
186 | } | |
3280af22 | 187 | else if (PL_nomemok) |
1050c9ca | 188 | return Nullch; |
189 | else { | |
bf49b057 | 190 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 191 | my_exit(1); |
4e35701f | 192 | return Nullch; |
1050c9ca | 193 | } |
194 | /*NOTREACHED*/ | |
195 | } | |
196 | ||
a687059c LW |
197 | #ifdef LEAKTEST |
198 | ||
8c52afec IZ |
199 | struct mem_test_strut { |
200 | union { | |
201 | long type; | |
202 | char c[2]; | |
203 | } u; | |
204 | long size; | |
205 | }; | |
206 | ||
207 | # define ALIGN sizeof(struct mem_test_strut) | |
208 | ||
209 | # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size) | |
210 | # define typeof_chunk(ch) \ | |
211 | (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100) | |
212 | # define set_typeof_chunk(ch,t) \ | |
213 | (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100) | |
214 | #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \ | |
215 | ? MAXYCOUNT - 1 \ | |
216 | : ( (size) > 40 \ | |
217 | ? ((size) - 1)/8 + 5 \ | |
218 | : ((size) - 1)/4)) | |
8d063cd8 | 219 | |
bd4080b3 | 220 | Malloc_t |
4f63d024 | 221 | Perl_safexmalloc(I32 x, MEM_SIZE size) |
8d063cd8 | 222 | { |
8c52afec | 223 | register char* where = (char*)safemalloc(size + ALIGN); |
8d063cd8 | 224 | |
8c52afec IZ |
225 | xcount[x] += size; |
226 | xycount[x][SIZE_TO_Y(size)]++; | |
227 | set_typeof_chunk(where, x); | |
228 | sizeof_chunk(where) = size; | |
229 | return (Malloc_t)(where + ALIGN); | |
8d063cd8 | 230 | } |
8d063cd8 | 231 | |
bd4080b3 | 232 | Malloc_t |
4f63d024 | 233 | Perl_safexrealloc(Malloc_t wh, MEM_SIZE size) |
a687059c | 234 | { |
8c52afec IZ |
235 | char *where = (char*)wh; |
236 | ||
237 | if (!wh) | |
238 | return safexmalloc(0,size); | |
a1d180c4 | 239 | |
8c52afec IZ |
240 | { |
241 | MEM_SIZE old = sizeof_chunk(where - ALIGN); | |
242 | int t = typeof_chunk(where - ALIGN); | |
243 | register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN); | |
a1d180c4 | 244 | |
8c52afec IZ |
245 | xycount[t][SIZE_TO_Y(old)]--; |
246 | xycount[t][SIZE_TO_Y(size)]++; | |
247 | xcount[t] += size - old; | |
248 | sizeof_chunk(new) = size; | |
249 | return (Malloc_t)(new + ALIGN); | |
250 | } | |
a687059c LW |
251 | } |
252 | ||
253 | void | |
4f63d024 | 254 | Perl_safexfree(Malloc_t wh) |
a687059c | 255 | { |
79072805 | 256 | I32 x; |
8c52afec IZ |
257 | char *where = (char*)wh; |
258 | MEM_SIZE size; | |
a1d180c4 | 259 | |
a687059c LW |
260 | if (!where) |
261 | return; | |
262 | where -= ALIGN; | |
8c52afec | 263 | size = sizeof_chunk(where); |
a687059c | 264 | x = where[0] + 100 * where[1]; |
8c52afec IZ |
265 | xcount[x] -= size; |
266 | xycount[x][SIZE_TO_Y(size)]--; | |
a687059c LW |
267 | safefree(where); |
268 | } | |
269 | ||
bd4080b3 | 270 | Malloc_t |
4f63d024 | 271 | Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 272 | { |
8c52afec IZ |
273 | register char * where = (char*)safexmalloc(x, size * count + ALIGN); |
274 | xcount[x] += size; | |
275 | xycount[x][SIZE_TO_Y(size)]++; | |
276 | memset((void*)(where + ALIGN), 0, size * count); | |
277 | set_typeof_chunk(where, x); | |
278 | sizeof_chunk(where) = size; | |
279 | return (Malloc_t)(where + ALIGN); | |
1050c9ca | 280 | } |
281 | ||
864dbfa3 | 282 | STATIC void |
cea2e8a9 | 283 | S_xstat(pTHX_ int flag) |
8d063cd8 | 284 | { |
8c52afec IZ |
285 | register I32 i, j, total = 0; |
286 | I32 subtot[MAXYCOUNT]; | |
8d063cd8 | 287 | |
8c52afec IZ |
288 | for (j = 0; j < MAXYCOUNT; j++) { |
289 | subtot[j] = 0; | |
290 | } | |
a1d180c4 | 291 | |
bf49b057 | 292 | PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total); |
a687059c | 293 | for (i = 0; i < MAXXCOUNT; i++) { |
8c52afec IZ |
294 | total += xcount[i]; |
295 | for (j = 0; j < MAXYCOUNT; j++) { | |
296 | subtot[j] += xycount[i][j]; | |
297 | } | |
298 | if (flag == 0 | |
299 | ? xcount[i] /* Have something */ | |
a1d180c4 | 300 | : (flag == 2 |
8c52afec IZ |
301 | ? xcount[i] != lastxcount[i] /* Changed */ |
302 | : xcount[i] > lastxcount[i])) { /* Growed */ | |
a1d180c4 | 303 | PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100, |
8c52afec | 304 | flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]); |
a687059c | 305 | lastxcount[i] = xcount[i]; |
8c52afec | 306 | for (j = 0; j < MAXYCOUNT; j++) { |
a1d180c4 | 307 | if ( flag == 0 |
8c52afec | 308 | ? xycount[i][j] /* Have something */ |
a1d180c4 | 309 | : (flag == 2 |
8c52afec IZ |
310 | ? xycount[i][j] != lastxycount[i][j] /* Changed */ |
311 | : xycount[i][j] > lastxycount[i][j])) { /* Growed */ | |
a1d180c4 NIS |
312 | PerlIO_printf(Perl_debug_log,"%3ld ", |
313 | flag == 2 | |
314 | ? xycount[i][j] - lastxycount[i][j] | |
8c52afec IZ |
315 | : xycount[i][j]); |
316 | lastxycount[i][j] = xycount[i][j]; | |
317 | } else { | |
bf49b057 | 318 | PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]); |
8c52afec IZ |
319 | } |
320 | } | |
bf49b057 | 321 | PerlIO_printf(Perl_debug_log, "\n"); |
8c52afec IZ |
322 | } |
323 | } | |
324 | if (flag != 2) { | |
bf49b057 | 325 | PerlIO_printf(Perl_debug_log, "Total %7ld ", total); |
8c52afec IZ |
326 | for (j = 0; j < MAXYCOUNT; j++) { |
327 | if (subtot[j]) { | |
bf49b057 | 328 | PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]); |
8c52afec | 329 | } else { |
bf49b057 | 330 | PerlIO_printf(Perl_debug_log, " . "); |
8c52afec | 331 | } |
8d063cd8 | 332 | } |
bf49b057 | 333 | PerlIO_printf(Perl_debug_log, "\n"); |
8d063cd8 | 334 | } |
8d063cd8 | 335 | } |
a687059c LW |
336 | |
337 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
338 | |
339 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
340 | ||
341 | char * | |
864dbfa3 | 342 | Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen) |
8d063cd8 | 343 | { |
fc36a67e | 344 | register I32 tolen; |
345 | for (tolen = 0; from < fromend; from++, tolen++) { | |
378cc40b LW |
346 | if (*from == '\\') { |
347 | if (from[1] == delim) | |
348 | from++; | |
fc36a67e | 349 | else { |
350 | if (to < toend) | |
351 | *to++ = *from; | |
352 | tolen++; | |
353 | from++; | |
354 | } | |
378cc40b | 355 | } |
bedebaa5 | 356 | else if (*from == delim) |
8d063cd8 | 357 | break; |
fc36a67e | 358 | if (to < toend) |
359 | *to++ = *from; | |
8d063cd8 | 360 | } |
bedebaa5 CS |
361 | if (to < toend) |
362 | *to = '\0'; | |
fc36a67e | 363 | *retlen = tolen; |
8d063cd8 LW |
364 | return from; |
365 | } | |
366 | ||
367 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 368 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
369 | |
370 | char * | |
864dbfa3 | 371 | Perl_instr(pTHX_ register const char *big, register const char *little) |
378cc40b | 372 | { |
08105a92 | 373 | register const char *s, *x; |
79072805 | 374 | register I32 first; |
378cc40b | 375 | |
a687059c | 376 | if (!little) |
08105a92 | 377 | return (char*)big; |
a687059c | 378 | first = *little++; |
378cc40b | 379 | if (!first) |
08105a92 | 380 | return (char*)big; |
378cc40b LW |
381 | while (*big) { |
382 | if (*big++ != first) | |
383 | continue; | |
384 | for (x=big,s=little; *s; /**/ ) { | |
385 | if (!*x) | |
386 | return Nullch; | |
387 | if (*s++ != *x++) { | |
388 | s--; | |
389 | break; | |
390 | } | |
391 | } | |
392 | if (!*s) | |
08105a92 | 393 | return (char*)(big-1); |
378cc40b LW |
394 | } |
395 | return Nullch; | |
396 | } | |
8d063cd8 | 397 | |
a687059c LW |
398 | /* same as instr but allow embedded nulls */ |
399 | ||
400 | char * | |
864dbfa3 | 401 | Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend) |
8d063cd8 | 402 | { |
08105a92 | 403 | register const char *s, *x; |
79072805 | 404 | register I32 first = *little; |
08105a92 | 405 | register const char *littleend = lend; |
378cc40b | 406 | |
a0d0e21e | 407 | if (!first && little >= littleend) |
08105a92 | 408 | return (char*)big; |
de3bb511 LW |
409 | if (bigend - big < littleend - little) |
410 | return Nullch; | |
a687059c LW |
411 | bigend -= littleend - little++; |
412 | while (big <= bigend) { | |
413 | if (*big++ != first) | |
414 | continue; | |
415 | for (x=big,s=little; s < littleend; /**/ ) { | |
416 | if (*s++ != *x++) { | |
417 | s--; | |
418 | break; | |
419 | } | |
420 | } | |
421 | if (s >= littleend) | |
08105a92 | 422 | return (char*)(big-1); |
378cc40b | 423 | } |
a687059c LW |
424 | return Nullch; |
425 | } | |
426 | ||
427 | /* reverse of the above--find last substring */ | |
428 | ||
429 | char * | |
864dbfa3 | 430 | Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 431 | { |
08105a92 GS |
432 | register const char *bigbeg; |
433 | register const char *s, *x; | |
79072805 | 434 | register I32 first = *little; |
08105a92 | 435 | register const char *littleend = lend; |
a687059c | 436 | |
a0d0e21e | 437 | if (!first && little >= littleend) |
08105a92 | 438 | return (char*)bigend; |
a687059c LW |
439 | bigbeg = big; |
440 | big = bigend - (littleend - little++); | |
441 | while (big >= bigbeg) { | |
442 | if (*big-- != first) | |
443 | continue; | |
444 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
445 | if (*s++ != *x++) { | |
446 | s--; | |
447 | break; | |
448 | } | |
449 | } | |
450 | if (s >= littleend) | |
08105a92 | 451 | return (char*)(big+1); |
378cc40b | 452 | } |
a687059c | 453 | return Nullch; |
378cc40b | 454 | } |
a687059c | 455 | |
cf93c79d IZ |
456 | #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/ |
457 | ||
458 | /* As a space optimization, we do not compile tables for strings of length | |
459 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
460 | special-cased in fbm_instr(). | |
461 | ||
462 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
463 | ||
954c1994 GS |
464 | /* |
465 | =for apidoc fbm_compile | |
466 | ||
467 | Analyses the string in order to make fast searches on it using fbm_instr() | |
468 | -- the Boyer-Moore algorithm. | |
469 | ||
470 | =cut | |
471 | */ | |
472 | ||
378cc40b | 473 | void |
7506f9c3 | 474 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 475 | { |
942e002e GS |
476 | register U8 *s; |
477 | register U8 *table; | |
79072805 | 478 | register U32 i; |
0b71040e | 479 | STRLEN len; |
79072805 LW |
480 | I32 rarest = 0; |
481 | U32 frequency = 256; | |
482 | ||
cf93c79d IZ |
483 | if (flags & FBMcf_TAIL) |
484 | sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */ | |
942e002e | 485 | s = (U8*)SvPV_force(sv, len); |
07f14f54 | 486 | (void)SvUPGRADE(sv, SVt_PVBM); |
cf93c79d IZ |
487 | if (len == 0) /* TAIL might be on on a zero-length string. */ |
488 | return; | |
02128f11 | 489 | if (len > 2) { |
7506f9c3 | 490 | U8 mlen; |
cf93c79d IZ |
491 | unsigned char *sb; |
492 | ||
7506f9c3 | 493 | if (len > 255) |
cf93c79d | 494 | mlen = 255; |
7506f9c3 GS |
495 | else |
496 | mlen = (U8)len; | |
497 | Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET); | |
cf93c79d | 498 | table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET); |
7506f9c3 GS |
499 | s = table - 1 - FBM_TABLE_OFFSET; /* last char */ |
500 | memset((void*)table, mlen, 256); | |
501 | table[-1] = (U8)flags; | |
02128f11 | 502 | i = 0; |
7506f9c3 | 503 | sb = s - mlen + 1; /* first char (maybe) */ |
cf93c79d IZ |
504 | while (s >= sb) { |
505 | if (table[*s] == mlen) | |
7506f9c3 | 506 | table[*s] = (U8)i; |
cf93c79d IZ |
507 | s--, i++; |
508 | } | |
378cc40b | 509 | } |
14befaf4 | 510 | sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */ |
79072805 | 511 | SvVALID_on(sv); |
378cc40b | 512 | |
463ee0b2 | 513 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
bbce6d69 | 514 | for (i = 0; i < len; i++) { |
22c35a8c | 515 | if (PL_freq[s[i]] < frequency) { |
bbce6d69 | 516 | rarest = i; |
22c35a8c | 517 | frequency = PL_freq[s[i]]; |
378cc40b LW |
518 | } |
519 | } | |
79072805 LW |
520 | BmRARE(sv) = s[rarest]; |
521 | BmPREVIOUS(sv) = rarest; | |
cf93c79d IZ |
522 | BmUSEFUL(sv) = 100; /* Initial value */ |
523 | if (flags & FBMcf_TAIL) | |
524 | SvTAIL_on(sv); | |
7506f9c3 GS |
525 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n", |
526 | BmRARE(sv),BmPREVIOUS(sv))); | |
378cc40b LW |
527 | } |
528 | ||
cf93c79d IZ |
529 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
530 | /* If SvTAIL is actually due to \Z or \z, this gives false positives | |
531 | if multiline */ | |
532 | ||
954c1994 GS |
533 | /* |
534 | =for apidoc fbm_instr | |
535 | ||
536 | Returns the location of the SV in the string delimited by C<str> and | |
537 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
538 | does not have to be fbm_compiled, but the search will not be as fast | |
539 | then. | |
540 | ||
541 | =cut | |
542 | */ | |
543 | ||
378cc40b | 544 | char * |
864dbfa3 | 545 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 546 | { |
a687059c | 547 | register unsigned char *s; |
cf93c79d IZ |
548 | STRLEN l; |
549 | register unsigned char *little = (unsigned char *)SvPV(littlestr,l); | |
550 | register STRLEN littlelen = l; | |
551 | register I32 multiline = flags & FBMrf_MULTILINE; | |
552 | ||
553 | if (bigend - big < littlelen) { | |
a1d180c4 | 554 | if ( SvTAIL(littlestr) |
cf93c79d | 555 | && (bigend - big == littlelen - 1) |
a1d180c4 | 556 | && (littlelen == 1 |
12ae5dfc JH |
557 | || (*big == *little && |
558 | memEQ((char *)big, (char *)little, littlelen - 1)))) | |
cf93c79d IZ |
559 | return (char*)big; |
560 | return Nullch; | |
561 | } | |
378cc40b | 562 | |
cf93c79d | 563 | if (littlelen <= 2) { /* Special-cased */ |
cf93c79d IZ |
564 | |
565 | if (littlelen == 1) { | |
566 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ | |
567 | /* Know that bigend != big. */ | |
568 | if (bigend[-1] == '\n') | |
569 | return (char *)(bigend - 1); | |
570 | return (char *) bigend; | |
571 | } | |
572 | s = big; | |
573 | while (s < bigend) { | |
574 | if (*s == *little) | |
575 | return (char *)s; | |
576 | s++; | |
577 | } | |
578 | if (SvTAIL(littlestr)) | |
579 | return (char *) bigend; | |
580 | return Nullch; | |
581 | } | |
582 | if (!littlelen) | |
583 | return (char*)big; /* Cannot be SvTAIL! */ | |
584 | ||
585 | /* littlelen is 2 */ | |
586 | if (SvTAIL(littlestr) && !multiline) { | |
587 | if (bigend[-1] == '\n' && bigend[-2] == *little) | |
588 | return (char*)bigend - 2; | |
589 | if (bigend[-1] == *little) | |
590 | return (char*)bigend - 1; | |
591 | return Nullch; | |
592 | } | |
593 | { | |
594 | /* This should be better than FBM if c1 == c2, and almost | |
595 | as good otherwise: maybe better since we do less indirection. | |
596 | And we save a lot of memory by caching no table. */ | |
597 | register unsigned char c1 = little[0]; | |
598 | register unsigned char c2 = little[1]; | |
599 | ||
600 | s = big + 1; | |
601 | bigend--; | |
602 | if (c1 != c2) { | |
603 | while (s <= bigend) { | |
604 | if (s[0] == c2) { | |
605 | if (s[-1] == c1) | |
606 | return (char*)s - 1; | |
607 | s += 2; | |
608 | continue; | |
3fe6f2dc | 609 | } |
cf93c79d IZ |
610 | next_chars: |
611 | if (s[0] == c1) { | |
612 | if (s == bigend) | |
613 | goto check_1char_anchor; | |
614 | if (s[1] == c2) | |
615 | return (char*)s; | |
616 | else { | |
617 | s++; | |
618 | goto next_chars; | |
619 | } | |
620 | } | |
621 | else | |
622 | s += 2; | |
623 | } | |
624 | goto check_1char_anchor; | |
625 | } | |
626 | /* Now c1 == c2 */ | |
627 | while (s <= bigend) { | |
628 | if (s[0] == c1) { | |
629 | if (s[-1] == c1) | |
630 | return (char*)s - 1; | |
631 | if (s == bigend) | |
632 | goto check_1char_anchor; | |
633 | if (s[1] == c1) | |
634 | return (char*)s; | |
635 | s += 3; | |
02128f11 | 636 | } |
c277df42 | 637 | else |
cf93c79d | 638 | s += 2; |
c277df42 | 639 | } |
c277df42 | 640 | } |
cf93c79d IZ |
641 | check_1char_anchor: /* One char and anchor! */ |
642 | if (SvTAIL(littlestr) && (*bigend == *little)) | |
643 | return (char *)bigend; /* bigend is already decremented. */ | |
644 | return Nullch; | |
d48672a2 | 645 | } |
cf93c79d | 646 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
bbce6d69 | 647 | s = bigend - littlelen; |
a1d180c4 | 648 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
649 | /* Automatically of length > 2 */ |
650 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 651 | { |
bbce6d69 | 652 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
653 | } |
654 | if (s[1] == *little | |
655 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
656 | { | |
cf93c79d | 657 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 658 | } |
02128f11 IZ |
659 | return Nullch; |
660 | } | |
cf93c79d IZ |
661 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
662 | char *b = ninstr((char*)big,(char*)bigend, | |
663 | (char*)little, (char*)little + littlelen); | |
664 | ||
665 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ | |
666 | /* Chop \n from littlestr: */ | |
667 | s = bigend - littlelen + 1; | |
7506f9c3 GS |
668 | if (*s == *little |
669 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
670 | { | |
3fe6f2dc | 671 | return (char*)s; |
7506f9c3 | 672 | } |
cf93c79d | 673 | return Nullch; |
a687059c | 674 | } |
cf93c79d | 675 | return b; |
a687059c | 676 | } |
a1d180c4 | 677 | |
cf93c79d IZ |
678 | { /* Do actual FBM. */ |
679 | register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; | |
680 | register unsigned char *oldlittle; | |
681 | ||
682 | if (littlelen > bigend - big) | |
683 | return Nullch; | |
684 | --littlelen; /* Last char found by table lookup */ | |
685 | ||
686 | s = big + littlelen; | |
687 | little += littlelen; /* last char */ | |
688 | oldlittle = little; | |
689 | if (s < bigend) { | |
690 | register I32 tmp; | |
691 | ||
692 | top2: | |
693 | /*SUPPRESS 560*/ | |
7506f9c3 | 694 | if ((tmp = table[*s])) { |
cf93c79d | 695 | if ((s += tmp) < bigend) |
62b28dd9 | 696 | goto top2; |
cf93c79d IZ |
697 | goto check_end; |
698 | } | |
699 | else { /* less expensive than calling strncmp() */ | |
700 | register unsigned char *olds = s; | |
701 | ||
702 | tmp = littlelen; | |
703 | ||
704 | while (tmp--) { | |
705 | if (*--s == *--little) | |
706 | continue; | |
cf93c79d IZ |
707 | s = olds + 1; /* here we pay the price for failure */ |
708 | little = oldlittle; | |
709 | if (s < bigend) /* fake up continue to outer loop */ | |
710 | goto top2; | |
711 | goto check_end; | |
712 | } | |
713 | return (char *)s; | |
a687059c | 714 | } |
378cc40b | 715 | } |
cf93c79d IZ |
716 | check_end: |
717 | if ( s == bigend && (table[-1] & FBMcf_TAIL) | |
12ae5dfc JH |
718 | && memEQ((char *)(bigend - littlelen), |
719 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d IZ |
720 | return (char*)bigend - littlelen; |
721 | return Nullch; | |
378cc40b | 722 | } |
378cc40b LW |
723 | } |
724 | ||
c277df42 IZ |
725 | /* start_shift, end_shift are positive quantities which give offsets |
726 | of ends of some substring of bigstr. | |
727 | If `last' we want the last occurence. | |
728 | old_posp is the way of communication between consequent calls if | |
a1d180c4 | 729 | the next call needs to find the . |
c277df42 | 730 | The initial *old_posp should be -1. |
cf93c79d IZ |
731 | |
732 | Note that we take into account SvTAIL, so one can get extra | |
733 | optimizations if _ALL flag is set. | |
c277df42 IZ |
734 | */ |
735 | ||
cf93c79d | 736 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
26fa51c3 | 737 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
cf93c79d IZ |
738 | is not supported yet. */ |
739 | ||
378cc40b | 740 | char * |
864dbfa3 | 741 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
378cc40b | 742 | { |
a687059c LW |
743 | register unsigned char *s, *x; |
744 | register unsigned char *big; | |
79072805 LW |
745 | register I32 pos; |
746 | register I32 previous; | |
747 | register I32 first; | |
a687059c | 748 | register unsigned char *little; |
c277df42 | 749 | register I32 stop_pos; |
a687059c | 750 | register unsigned char *littleend; |
c277df42 | 751 | I32 found = 0; |
378cc40b | 752 | |
c277df42 | 753 | if (*old_posp == -1 |
3280af22 | 754 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
cf93c79d IZ |
755 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
756 | cant_find: | |
a1d180c4 | 757 | if ( BmRARE(littlestr) == '\n' |
cf93c79d IZ |
758 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
759 | little = (unsigned char *)(SvPVX(littlestr)); | |
760 | littleend = little + SvCUR(littlestr); | |
761 | first = *little++; | |
762 | goto check_tail; | |
763 | } | |
378cc40b | 764 | return Nullch; |
cf93c79d IZ |
765 | } |
766 | ||
463ee0b2 | 767 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 | 768 | littleend = little + SvCUR(littlestr); |
378cc40b | 769 | first = *little++; |
c277df42 | 770 | /* The value of pos we can start at: */ |
79072805 | 771 | previous = BmPREVIOUS(littlestr); |
463ee0b2 | 772 | big = (unsigned char *)(SvPVX(bigstr)); |
c277df42 IZ |
773 | /* The value of pos we can stop at: */ |
774 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); | |
cf93c79d | 775 | if (previous + start_shift > stop_pos) { |
0fe87f7c HS |
776 | /* |
777 | stop_pos does not include SvTAIL in the count, so this check is incorrect | |
778 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 | |
779 | */ | |
780 | #if 0 | |
cf93c79d IZ |
781 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
782 | goto check_tail; | |
0fe87f7c | 783 | #endif |
cf93c79d IZ |
784 | return Nullch; |
785 | } | |
c277df42 | 786 | while (pos < previous + start_shift) { |
3280af22 | 787 | if (!(pos += PL_screamnext[pos])) |
cf93c79d | 788 | goto cant_find; |
378cc40b | 789 | } |
de3bb511 | 790 | big -= previous; |
bbce6d69 | 791 | do { |
ef64f398 | 792 | if (pos >= stop_pos) break; |
bbce6d69 | 793 | if (big[pos] != first) |
794 | continue; | |
795 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
bbce6d69 | 796 | if (*s++ != *x++) { |
797 | s--; | |
798 | break; | |
378cc40b | 799 | } |
bbce6d69 | 800 | } |
c277df42 IZ |
801 | if (s == littleend) { |
802 | *old_posp = pos; | |
803 | if (!last) return (char *)(big+pos); | |
804 | found = 1; | |
805 | } | |
3280af22 | 806 | } while ( pos += PL_screamnext[pos] ); |
a1d180c4 | 807 | if (last && found) |
cf93c79d | 808 | return (char *)(big+(*old_posp)); |
cf93c79d IZ |
809 | check_tail: |
810 | if (!SvTAIL(littlestr) || (end_shift > 0)) | |
811 | return Nullch; | |
812 | /* Ignore the trailing "\n". This code is not microoptimized */ | |
813 | big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr)); | |
814 | stop_pos = littleend - little; /* Actual littlestr len */ | |
815 | if (stop_pos == 0) | |
816 | return (char*)big; | |
817 | big -= stop_pos; | |
818 | if (*big == first | |
12ae5dfc JH |
819 | && ((stop_pos == 1) || |
820 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) | |
cf93c79d IZ |
821 | return (char*)big; |
822 | return Nullch; | |
8d063cd8 LW |
823 | } |
824 | ||
79072805 | 825 | I32 |
864dbfa3 | 826 | Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len) |
79072805 | 827 | { |
bbce6d69 | 828 | register U8 *a = (U8 *)s1; |
829 | register U8 *b = (U8 *)s2; | |
79072805 | 830 | while (len--) { |
22c35a8c | 831 | if (*a != *b && *a != PL_fold[*b]) |
bbce6d69 | 832 | return 1; |
833 | a++,b++; | |
834 | } | |
835 | return 0; | |
836 | } | |
837 | ||
838 | I32 | |
864dbfa3 | 839 | Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len) |
bbce6d69 | 840 | { |
841 | register U8 *a = (U8 *)s1; | |
842 | register U8 *b = (U8 *)s2; | |
843 | while (len--) { | |
22c35a8c | 844 | if (*a != *b && *a != PL_fold_locale[*b]) |
bbce6d69 | 845 | return 1; |
846 | a++,b++; | |
79072805 LW |
847 | } |
848 | return 0; | |
849 | } | |
850 | ||
8d063cd8 LW |
851 | /* copy a string to a safe spot */ |
852 | ||
954c1994 GS |
853 | /* |
854 | =for apidoc savepv | |
855 | ||
856 | Copy a string to a safe spot. This does not use an SV. | |
857 | ||
858 | =cut | |
859 | */ | |
860 | ||
8d063cd8 | 861 | char * |
864dbfa3 | 862 | Perl_savepv(pTHX_ const char *sv) |
8d063cd8 | 863 | { |
a687059c | 864 | register char *newaddr; |
8d063cd8 | 865 | |
79072805 LW |
866 | New(902,newaddr,strlen(sv)+1,char); |
867 | (void)strcpy(newaddr,sv); | |
8d063cd8 LW |
868 | return newaddr; |
869 | } | |
870 | ||
a687059c LW |
871 | /* same thing but with a known length */ |
872 | ||
954c1994 GS |
873 | /* |
874 | =for apidoc savepvn | |
875 | ||
876 | Copy a string to a safe spot. The C<len> indicates number of bytes to | |
877 | copy. This does not use an SV. | |
878 | ||
879 | =cut | |
880 | */ | |
881 | ||
a687059c | 882 | char * |
864dbfa3 | 883 | Perl_savepvn(pTHX_ const char *sv, register I32 len) |
a687059c LW |
884 | { |
885 | register char *newaddr; | |
886 | ||
887 | New(903,newaddr,len+1,char); | |
79072805 | 888 | Copy(sv,newaddr,len,char); /* might not be null terminated */ |
a687059c LW |
889 | newaddr[len] = '\0'; /* is now */ |
890 | return newaddr; | |
891 | } | |
892 | ||
cea2e8a9 | 893 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 894 | |
76e3520e | 895 | STATIC SV * |
cea2e8a9 | 896 | S_mess_alloc(pTHX) |
fc36a67e | 897 | { |
898 | SV *sv; | |
899 | XPVMG *any; | |
900 | ||
e72dc28c GS |
901 | if (!PL_dirty) |
902 | return sv_2mortal(newSVpvn("",0)); | |
903 | ||
0372dbb6 GS |
904 | if (PL_mess_sv) |
905 | return PL_mess_sv; | |
906 | ||
fc36a67e | 907 | /* Create as PVMG now, to avoid any upgrading later */ |
908 | New(905, sv, 1, SV); | |
909 | Newz(905, any, 1, XPVMG); | |
910 | SvFLAGS(sv) = SVt_PVMG; | |
911 | SvANY(sv) = (void*)any; | |
912 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ | |
e72dc28c | 913 | PL_mess_sv = sv; |
fc36a67e | 914 | return sv; |
915 | } | |
916 | ||
c5be433b | 917 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
918 | char * |
919 | Perl_form_nocontext(const char* pat, ...) | |
920 | { | |
921 | dTHX; | |
c5be433b | 922 | char *retval; |
cea2e8a9 GS |
923 | va_list args; |
924 | va_start(args, pat); | |
c5be433b | 925 | retval = vform(pat, &args); |
cea2e8a9 | 926 | va_end(args); |
c5be433b | 927 | return retval; |
cea2e8a9 | 928 | } |
c5be433b | 929 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 930 | |
8990e307 | 931 | char * |
864dbfa3 | 932 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 933 | { |
c5be433b | 934 | char *retval; |
46fc3d4c | 935 | va_list args; |
46fc3d4c | 936 | va_start(args, pat); |
c5be433b | 937 | retval = vform(pat, &args); |
46fc3d4c | 938 | va_end(args); |
c5be433b GS |
939 | return retval; |
940 | } | |
941 | ||
942 | char * | |
943 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
944 | { | |
945 | SV *sv = mess_alloc(); | |
946 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
e72dc28c | 947 | return SvPVX(sv); |
46fc3d4c | 948 | } |
a687059c | 949 | |
5a844595 GS |
950 | #if defined(PERL_IMPLICIT_CONTEXT) |
951 | SV * | |
952 | Perl_mess_nocontext(const char *pat, ...) | |
953 | { | |
954 | dTHX; | |
955 | SV *retval; | |
956 | va_list args; | |
957 | va_start(args, pat); | |
958 | retval = vmess(pat, &args); | |
959 | va_end(args); | |
960 | return retval; | |
961 | } | |
962 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
963 | ||
06bf62c7 | 964 | SV * |
5a844595 GS |
965 | Perl_mess(pTHX_ const char *pat, ...) |
966 | { | |
967 | SV *retval; | |
968 | va_list args; | |
969 | va_start(args, pat); | |
970 | retval = vmess(pat, &args); | |
971 | va_end(args); | |
972 | return retval; | |
973 | } | |
974 | ||
975 | SV * | |
976 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
46fc3d4c | 977 | { |
e72dc28c | 978 | SV *sv = mess_alloc(); |
46fc3d4c | 979 | static char dgd[] = " during global destruction.\n"; |
980 | ||
fc36a67e | 981 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
46fc3d4c | 982 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
57843af0 | 983 | if (CopLINE(PL_curcop)) |
ed094faf GS |
984 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
985 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
515f54a1 GS |
986 | if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) { |
987 | bool line_mode = (RsSIMPLE(PL_rs) && | |
7c1e0849 | 988 | SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n'); |
57def98f | 989 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
cf2093f6 | 990 | PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv), |
a1d180c4 | 991 | line_mode ? "line" : "chunk", |
cf2093f6 | 992 | (IV)IoLINES(GvIOp(PL_last_in_gv))); |
a687059c | 993 | } |
9efbc0eb | 994 | #ifdef USE_THREADS |
e8e6f333 GS |
995 | if (thr->tid) |
996 | Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid); | |
9efbc0eb | 997 | #endif |
515f54a1 | 998 | sv_catpv(sv, PL_dirty ? dgd : ".\n"); |
a687059c | 999 | } |
06bf62c7 | 1000 | return sv; |
a687059c LW |
1001 | } |
1002 | ||
c5be433b GS |
1003 | OP * |
1004 | Perl_vdie(pTHX_ const char* pat, va_list *args) | |
36477c24 | 1005 | { |
36477c24 | 1006 | char *message; |
3280af22 | 1007 | int was_in_eval = PL_in_eval; |
36477c24 | 1008 | HV *stash; |
1009 | GV *gv; | |
1010 | CV *cv; | |
06bf62c7 GS |
1011 | SV *msv; |
1012 | STRLEN msglen; | |
36477c24 | 1013 | |
bf49b057 | 1014 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 1015 | "%p: die: curstack = %p, mainstack = %p\n", |
533c011a | 1016 | thr, PL_curstack, PL_mainstack)); |
36477c24 | 1017 | |
06bf62c7 | 1018 | if (pat) { |
5a844595 GS |
1019 | msv = vmess(pat, args); |
1020 | if (PL_errors && SvCUR(PL_errors)) { | |
1021 | sv_catsv(PL_errors, msv); | |
1022 | message = SvPV(PL_errors, msglen); | |
1023 | SvCUR_set(PL_errors, 0); | |
1024 | } | |
1025 | else | |
1026 | message = SvPV(msv,msglen); | |
06bf62c7 GS |
1027 | } |
1028 | else { | |
1029 | message = Nullch; | |
0f79a09d | 1030 | msglen = 0; |
06bf62c7 | 1031 | } |
36477c24 | 1032 | |
bf49b057 | 1033 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 1034 | "%p: die: message = %s\ndiehook = %p\n", |
533c011a | 1035 | thr, message, PL_diehook)); |
3280af22 | 1036 | if (PL_diehook) { |
cea2e8a9 | 1037 | /* sv_2cv might call Perl_croak() */ |
3280af22 | 1038 | SV *olddiehook = PL_diehook; |
1738f5c4 | 1039 | ENTER; |
3280af22 NIS |
1040 | SAVESPTR(PL_diehook); |
1041 | PL_diehook = Nullsv; | |
1738f5c4 CS |
1042 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
1043 | LEAVE; | |
1044 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1045 | dSP; | |
774d564b | 1046 | SV *msg; |
1047 | ||
1048 | ENTER; | |
3a1f2dc9 | 1049 | save_re_context(); |
79cb57f6 | 1050 | if (message) { |
06bf62c7 | 1051 | msg = newSVpvn(message, msglen); |
4e6ea2c3 GS |
1052 | SvREADONLY_on(msg); |
1053 | SAVEFREESV(msg); | |
1054 | } | |
1055 | else { | |
1056 | msg = ERRSV; | |
1057 | } | |
1738f5c4 | 1058 | |
e788e7d3 | 1059 | PUSHSTACKi(PERLSI_DIEHOOK); |
924508f0 | 1060 | PUSHMARK(SP); |
1738f5c4 CS |
1061 | XPUSHs(msg); |
1062 | PUTBACK; | |
0cdb2077 | 1063 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1064 | POPSTACK; |
774d564b | 1065 | LEAVE; |
1738f5c4 | 1066 | } |
36477c24 | 1067 | } |
1068 | ||
06bf62c7 | 1069 | PL_restartop = die_where(message, msglen); |
bf49b057 | 1070 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
7c06b590 | 1071 | "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n", |
533c011a | 1072 | thr, PL_restartop, was_in_eval, PL_top_env)); |
3280af22 | 1073 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
6224f72b | 1074 | JMPENV_JUMP(3); |
3280af22 | 1075 | return PL_restartop; |
36477c24 | 1076 | } |
1077 | ||
c5be433b | 1078 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1079 | OP * |
1080 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1081 | { |
cea2e8a9 GS |
1082 | dTHX; |
1083 | OP *o; | |
a687059c | 1084 | va_list args; |
cea2e8a9 | 1085 | va_start(args, pat); |
c5be433b | 1086 | o = vdie(pat, &args); |
cea2e8a9 GS |
1087 | va_end(args); |
1088 | return o; | |
1089 | } | |
c5be433b | 1090 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 GS |
1091 | |
1092 | OP * | |
1093 | Perl_die(pTHX_ const char* pat, ...) | |
1094 | { | |
1095 | OP *o; | |
1096 | va_list args; | |
1097 | va_start(args, pat); | |
c5be433b | 1098 | o = vdie(pat, &args); |
cea2e8a9 GS |
1099 | va_end(args); |
1100 | return o; | |
1101 | } | |
1102 | ||
c5be433b GS |
1103 | void |
1104 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1105 | { |
de3bb511 | 1106 | char *message; |
748a9306 LW |
1107 | HV *stash; |
1108 | GV *gv; | |
1109 | CV *cv; | |
06bf62c7 GS |
1110 | SV *msv; |
1111 | STRLEN msglen; | |
a687059c | 1112 | |
9983fa3c GS |
1113 | if (pat) { |
1114 | msv = vmess(pat, args); | |
1115 | if (PL_errors && SvCUR(PL_errors)) { | |
1116 | sv_catsv(PL_errors, msv); | |
1117 | message = SvPV(PL_errors, msglen); | |
1118 | SvCUR_set(PL_errors, 0); | |
1119 | } | |
1120 | else | |
1121 | message = SvPV(msv,msglen); | |
1122 | } | |
1123 | else { | |
1124 | message = Nullch; | |
1125 | msglen = 0; | |
5a844595 | 1126 | } |
5a844595 | 1127 | |
b900a521 JH |
1128 | DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", |
1129 | PTR2UV(thr), message)); | |
5a844595 | 1130 | |
3280af22 | 1131 | if (PL_diehook) { |
cea2e8a9 | 1132 | /* sv_2cv might call Perl_croak() */ |
3280af22 | 1133 | SV *olddiehook = PL_diehook; |
1738f5c4 | 1134 | ENTER; |
3280af22 NIS |
1135 | SAVESPTR(PL_diehook); |
1136 | PL_diehook = Nullsv; | |
20cec16a | 1137 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
1738f5c4 CS |
1138 | LEAVE; |
1139 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1140 | dSP; |
774d564b | 1141 | SV *msg; |
1142 | ||
1143 | ENTER; | |
3a1f2dc9 | 1144 | save_re_context(); |
9983fa3c GS |
1145 | if (message) { |
1146 | msg = newSVpvn(message, msglen); | |
1147 | SvREADONLY_on(msg); | |
1148 | SAVEFREESV(msg); | |
1149 | } | |
1150 | else { | |
1151 | msg = ERRSV; | |
1152 | } | |
20cec16a | 1153 | |
e788e7d3 | 1154 | PUSHSTACKi(PERLSI_DIEHOOK); |
924508f0 | 1155 | PUSHMARK(SP); |
1738f5c4 | 1156 | XPUSHs(msg); |
20cec16a | 1157 | PUTBACK; |
864dbfa3 | 1158 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1159 | POPSTACK; |
774d564b | 1160 | LEAVE; |
20cec16a | 1161 | } |
748a9306 | 1162 | } |
3280af22 | 1163 | if (PL_in_eval) { |
06bf62c7 | 1164 | PL_restartop = die_where(message, msglen); |
6224f72b | 1165 | JMPENV_JUMP(3); |
a0d0e21e | 1166 | } |
d175a3f0 GS |
1167 | { |
1168 | #ifdef USE_SFIO | |
1169 | /* SFIO can really mess with your errno */ | |
1170 | int e = errno; | |
1171 | #endif | |
bf49b057 GS |
1172 | PerlIO *serr = Perl_error_log; |
1173 | ||
1174 | PerlIO_write(serr, message, msglen); | |
1175 | (void)PerlIO_flush(serr); | |
d175a3f0 GS |
1176 | #ifdef USE_SFIO |
1177 | errno = e; | |
1178 | #endif | |
1179 | } | |
f86702cc | 1180 | my_failure_exit(); |
a687059c LW |
1181 | } |
1182 | ||
c5be433b | 1183 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1184 | void |
cea2e8a9 | 1185 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1186 | { |
cea2e8a9 | 1187 | dTHX; |
a687059c | 1188 | va_list args; |
cea2e8a9 | 1189 | va_start(args, pat); |
c5be433b | 1190 | vcroak(pat, &args); |
cea2e8a9 GS |
1191 | /* NOTREACHED */ |
1192 | va_end(args); | |
1193 | } | |
1194 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1195 | ||
954c1994 GS |
1196 | /* |
1197 | =for apidoc croak | |
1198 | ||
9983fa3c GS |
1199 | This is the XSUB-writer's interface to Perl's C<die> function. |
1200 | Normally use this function the same way you use the C C<printf> | |
1201 | function. See C<warn>. | |
1202 | ||
1203 | If you want to throw an exception object, assign the object to | |
1204 | C<$@> and then pass C<Nullch> to croak(): | |
1205 | ||
1206 | errsv = get_sv("@", TRUE); | |
1207 | sv_setsv(errsv, exception_object); | |
1208 | croak(Nullch); | |
954c1994 GS |
1209 | |
1210 | =cut | |
1211 | */ | |
1212 | ||
cea2e8a9 GS |
1213 | void |
1214 | Perl_croak(pTHX_ const char *pat, ...) | |
1215 | { | |
1216 | va_list args; | |
1217 | va_start(args, pat); | |
c5be433b | 1218 | vcroak(pat, &args); |
cea2e8a9 GS |
1219 | /* NOTREACHED */ |
1220 | va_end(args); | |
1221 | } | |
1222 | ||
c5be433b GS |
1223 | void |
1224 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1225 | { |
de3bb511 | 1226 | char *message; |
748a9306 LW |
1227 | HV *stash; |
1228 | GV *gv; | |
1229 | CV *cv; | |
06bf62c7 GS |
1230 | SV *msv; |
1231 | STRLEN msglen; | |
a687059c | 1232 | |
5a844595 | 1233 | msv = vmess(pat, args); |
06bf62c7 | 1234 | message = SvPV(msv, msglen); |
a687059c | 1235 | |
3280af22 | 1236 | if (PL_warnhook) { |
cea2e8a9 | 1237 | /* sv_2cv might call Perl_warn() */ |
3280af22 | 1238 | SV *oldwarnhook = PL_warnhook; |
1738f5c4 | 1239 | ENTER; |
3280af22 NIS |
1240 | SAVESPTR(PL_warnhook); |
1241 | PL_warnhook = Nullsv; | |
20cec16a | 1242 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
1738f5c4 CS |
1243 | LEAVE; |
1244 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1245 | dSP; |
774d564b | 1246 | SV *msg; |
1247 | ||
1248 | ENTER; | |
3a1f2dc9 | 1249 | save_re_context(); |
06bf62c7 | 1250 | msg = newSVpvn(message, msglen); |
774d564b | 1251 | SvREADONLY_on(msg); |
1252 | SAVEFREESV(msg); | |
1253 | ||
e788e7d3 | 1254 | PUSHSTACKi(PERLSI_WARNHOOK); |
924508f0 | 1255 | PUSHMARK(SP); |
774d564b | 1256 | XPUSHs(msg); |
20cec16a | 1257 | PUTBACK; |
864dbfa3 | 1258 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1259 | POPSTACK; |
774d564b | 1260 | LEAVE; |
20cec16a | 1261 | return; |
1262 | } | |
748a9306 | 1263 | } |
bf49b057 GS |
1264 | { |
1265 | PerlIO *serr = Perl_error_log; | |
1266 | ||
1267 | PerlIO_write(serr, message, msglen); | |
a687059c | 1268 | #ifdef LEAKTEST |
a1d180c4 | 1269 | DEBUG_L(*message == '!' |
bf49b057 GS |
1270 | ? (xstat(message[1]=='!' |
1271 | ? (message[2]=='!' ? 2 : 1) | |
1272 | : 0) | |
1273 | , 0) | |
1274 | : 0); | |
a687059c | 1275 | #endif |
bf49b057 GS |
1276 | (void)PerlIO_flush(serr); |
1277 | } | |
a687059c | 1278 | } |
8d063cd8 | 1279 | |
c5be433b | 1280 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1281 | void |
1282 | Perl_warn_nocontext(const char *pat, ...) | |
1283 | { | |
1284 | dTHX; | |
1285 | va_list args; | |
1286 | va_start(args, pat); | |
c5be433b | 1287 | vwarn(pat, &args); |
cea2e8a9 GS |
1288 | va_end(args); |
1289 | } | |
1290 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1291 | ||
954c1994 GS |
1292 | /* |
1293 | =for apidoc warn | |
1294 | ||
1295 | This is the XSUB-writer's interface to Perl's C<warn> function. Use this | |
1296 | function the same way you use the C C<printf> function. See | |
1297 | C<croak>. | |
1298 | ||
1299 | =cut | |
1300 | */ | |
1301 | ||
cea2e8a9 GS |
1302 | void |
1303 | Perl_warn(pTHX_ const char *pat, ...) | |
1304 | { | |
1305 | va_list args; | |
1306 | va_start(args, pat); | |
c5be433b | 1307 | vwarn(pat, &args); |
cea2e8a9 GS |
1308 | va_end(args); |
1309 | } | |
1310 | ||
c5be433b GS |
1311 | #if defined(PERL_IMPLICIT_CONTEXT) |
1312 | void | |
1313 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1314 | { | |
1315 | dTHX; | |
1316 | va_list args; | |
1317 | va_start(args, pat); | |
1318 | vwarner(err, pat, &args); | |
1319 | va_end(args); | |
1320 | } | |
1321 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1322 | ||
599cee73 | 1323 | void |
864dbfa3 | 1324 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1325 | { |
1326 | va_list args; | |
c5be433b GS |
1327 | va_start(args, pat); |
1328 | vwarner(err, pat, &args); | |
1329 | va_end(args); | |
1330 | } | |
1331 | ||
1332 | void | |
1333 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1334 | { | |
599cee73 PM |
1335 | char *message; |
1336 | HV *stash; | |
1337 | GV *gv; | |
1338 | CV *cv; | |
06bf62c7 GS |
1339 | SV *msv; |
1340 | STRLEN msglen; | |
599cee73 | 1341 | |
5a844595 | 1342 | msv = vmess(pat, args); |
06bf62c7 | 1343 | message = SvPV(msv, msglen); |
599cee73 PM |
1344 | |
1345 | if (ckDEAD(err)) { | |
1346 | #ifdef USE_THREADS | |
b900a521 | 1347 | DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message)); |
599cee73 PM |
1348 | #endif /* USE_THREADS */ |
1349 | if (PL_diehook) { | |
cea2e8a9 | 1350 | /* sv_2cv might call Perl_croak() */ |
599cee73 PM |
1351 | SV *olddiehook = PL_diehook; |
1352 | ENTER; | |
1353 | SAVESPTR(PL_diehook); | |
1354 | PL_diehook = Nullsv; | |
1355 | cv = sv_2cv(olddiehook, &stash, &gv, 0); | |
1356 | LEAVE; | |
1357 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1358 | dSP; | |
1359 | SV *msg; | |
a1d180c4 | 1360 | |
599cee73 | 1361 | ENTER; |
3a1f2dc9 | 1362 | save_re_context(); |
06bf62c7 | 1363 | msg = newSVpvn(message, msglen); |
599cee73 PM |
1364 | SvREADONLY_on(msg); |
1365 | SAVEFREESV(msg); | |
a1d180c4 | 1366 | |
3a1f2dc9 | 1367 | PUSHSTACKi(PERLSI_DIEHOOK); |
599cee73 PM |
1368 | PUSHMARK(sp); |
1369 | XPUSHs(msg); | |
1370 | PUTBACK; | |
864dbfa3 | 1371 | call_sv((SV*)cv, G_DISCARD); |
3a1f2dc9 | 1372 | POPSTACK; |
599cee73 PM |
1373 | LEAVE; |
1374 | } | |
1375 | } | |
1376 | if (PL_in_eval) { | |
06bf62c7 | 1377 | PL_restartop = die_where(message, msglen); |
599cee73 PM |
1378 | JMPENV_JUMP(3); |
1379 | } | |
bf49b057 GS |
1380 | { |
1381 | PerlIO *serr = Perl_error_log; | |
1382 | PerlIO_write(serr, message, msglen); | |
1383 | (void)PerlIO_flush(serr); | |
1384 | } | |
599cee73 PM |
1385 | my_failure_exit(); |
1386 | ||
1387 | } | |
1388 | else { | |
1389 | if (PL_warnhook) { | |
cea2e8a9 | 1390 | /* sv_2cv might call Perl_warn() */ |
599cee73 PM |
1391 | SV *oldwarnhook = PL_warnhook; |
1392 | ENTER; | |
1393 | SAVESPTR(PL_warnhook); | |
1394 | PL_warnhook = Nullsv; | |
1395 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); | |
3a1f2dc9 | 1396 | LEAVE; |
599cee73 PM |
1397 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
1398 | dSP; | |
1399 | SV *msg; | |
a1d180c4 | 1400 | |
599cee73 | 1401 | ENTER; |
3a1f2dc9 | 1402 | save_re_context(); |
06bf62c7 | 1403 | msg = newSVpvn(message, msglen); |
599cee73 PM |
1404 | SvREADONLY_on(msg); |
1405 | SAVEFREESV(msg); | |
a1d180c4 | 1406 | |
3a1f2dc9 | 1407 | PUSHSTACKi(PERLSI_WARNHOOK); |
599cee73 PM |
1408 | PUSHMARK(sp); |
1409 | XPUSHs(msg); | |
1410 | PUTBACK; | |
864dbfa3 | 1411 | call_sv((SV*)cv, G_DISCARD); |
3a1f2dc9 | 1412 | POPSTACK; |
599cee73 PM |
1413 | LEAVE; |
1414 | return; | |
1415 | } | |
1416 | } | |
bf49b057 GS |
1417 | { |
1418 | PerlIO *serr = Perl_error_log; | |
1419 | PerlIO_write(serr, message, msglen); | |
599cee73 | 1420 | #ifdef LEAKTEST |
a1d180c4 | 1421 | DEBUG_L(*message == '!' |
06247ec9 JH |
1422 | ? (xstat(message[1]=='!' |
1423 | ? (message[2]=='!' ? 2 : 1) | |
1424 | : 0) | |
1425 | , 0) | |
1426 | : 0); | |
599cee73 | 1427 | #endif |
bf49b057 GS |
1428 | (void)PerlIO_flush(serr); |
1429 | } | |
599cee73 PM |
1430 | } |
1431 | } | |
1432 | ||
13b6e58c JH |
1433 | #ifdef USE_ENVIRON_ARRAY |
1434 | /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */ | |
2986a63f | 1435 | #if !defined(WIN32) && !defined(NETWARE) |
8d063cd8 | 1436 | void |
864dbfa3 | 1437 | Perl_my_setenv(pTHX_ char *nam, char *val) |
8d063cd8 | 1438 | { |
f2517201 GS |
1439 | #ifndef PERL_USE_SAFE_PUTENV |
1440 | /* most putenv()s leak, so we manipulate environ directly */ | |
79072805 | 1441 | register I32 i=setenv_getix(nam); /* where does it go? */ |
8d063cd8 | 1442 | |
3280af22 | 1443 | if (environ == PL_origenviron) { /* need we copy environment? */ |
79072805 LW |
1444 | I32 j; |
1445 | I32 max; | |
fe14fcc3 LW |
1446 | char **tmpenv; |
1447 | ||
de3bb511 | 1448 | /*SUPPRESS 530*/ |
fe14fcc3 | 1449 | for (max = i; environ[max]; max++) ; |
f2517201 GS |
1450 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
1451 | for (j=0; j<max; j++) { /* copy environment */ | |
1452 | tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char)); | |
1453 | strcpy(tmpenv[j], environ[j]); | |
1454 | } | |
fe14fcc3 LW |
1455 | tmpenv[max] = Nullch; |
1456 | environ = tmpenv; /* tell exec where it is now */ | |
1457 | } | |
a687059c | 1458 | if (!val) { |
f2517201 | 1459 | safesysfree(environ[i]); |
a687059c LW |
1460 | while (environ[i]) { |
1461 | environ[i] = environ[i+1]; | |
1462 | i++; | |
1463 | } | |
1464 | return; | |
1465 | } | |
8d063cd8 | 1466 | if (!environ[i]) { /* does not exist yet */ |
f2517201 | 1467 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
8d063cd8 LW |
1468 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1469 | } | |
fe14fcc3 | 1470 | else |
f2517201 GS |
1471 | safesysfree(environ[i]); |
1472 | environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char)); | |
1473 | ||
a687059c | 1474 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
f2517201 GS |
1475 | |
1476 | #else /* PERL_USE_SAFE_PUTENV */ | |
47dafe4d EF |
1477 | # if defined(__CYGWIN__) |
1478 | setenv(nam, val, 1); | |
1479 | # else | |
f2517201 GS |
1480 | char *new_env; |
1481 | ||
1482 | new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char)); | |
f2517201 | 1483 | (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */ |
f2517201 | 1484 | (void)putenv(new_env); |
47dafe4d | 1485 | # endif /* __CYGWIN__ */ |
f2517201 | 1486 | #endif /* PERL_USE_SAFE_PUTENV */ |
8d063cd8 LW |
1487 | } |
1488 | ||
2986a63f | 1489 | #else /* WIN32 || NETWARE */ |
68dc0745 | 1490 | |
1491 | void | |
864dbfa3 | 1492 | Perl_my_setenv(pTHX_ char *nam,char *val) |
68dc0745 | 1493 | { |
ac5c734f GS |
1494 | register char *envstr; |
1495 | STRLEN len = strlen(nam) + 3; | |
1496 | if (!val) { | |
1497 | val = ""; | |
1498 | } | |
1499 | len += strlen(val); | |
1500 | New(904, envstr, len, char); | |
1501 | (void)sprintf(envstr,"%s=%s",nam,val); | |
1502 | (void)PerlEnv_putenv(envstr); | |
1503 | Safefree(envstr); | |
3e3baf6d TB |
1504 | } |
1505 | ||
2986a63f | 1506 | #endif /* WIN32 || NETWARE */ |
3e3baf6d TB |
1507 | |
1508 | I32 | |
864dbfa3 | 1509 | Perl_setenv_getix(pTHX_ char *nam) |
3e3baf6d TB |
1510 | { |
1511 | register I32 i, len = strlen(nam); | |
1512 | ||
1513 | for (i = 0; environ[i]; i++) { | |
1514 | if ( | |
1515 | #ifdef WIN32 | |
1516 | strnicmp(environ[i],nam,len) == 0 | |
1517 | #else | |
1518 | strnEQ(environ[i],nam,len) | |
1519 | #endif | |
1520 | && environ[i][len] == '=') | |
1521 | break; /* strnEQ must come first to avoid */ | |
1522 | } /* potential SEGV's */ | |
1523 | return i; | |
68dc0745 | 1524 | } |
1525 | ||
ed79a026 | 1526 | #endif /* !VMS && !EPOC*/ |
378cc40b | 1527 | |
16d20bd9 | 1528 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 1529 | I32 |
864dbfa3 | 1530 | Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ |
378cc40b | 1531 | { |
79072805 | 1532 | I32 i; |
378cc40b | 1533 | |
6ad3d225 | 1534 | for (i = 0; PerlLIO_unlink(f) >= 0; i++) ; |
378cc40b LW |
1535 | return i ? 0 : -1; |
1536 | } | |
1537 | #endif | |
1538 | ||
7a3f2258 | 1539 | /* this is a drop-in replacement for bcopy() */ |
2253333f | 1540 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
378cc40b | 1541 | char * |
7a3f2258 | 1542 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
378cc40b LW |
1543 | { |
1544 | char *retval = to; | |
1545 | ||
7c0587c8 LW |
1546 | if (from - to >= 0) { |
1547 | while (len--) | |
1548 | *to++ = *from++; | |
1549 | } | |
1550 | else { | |
1551 | to += len; | |
1552 | from += len; | |
1553 | while (len--) | |
faf8582f | 1554 | *(--to) = *(--from); |
7c0587c8 | 1555 | } |
378cc40b LW |
1556 | return retval; |
1557 | } | |
ffed7fef | 1558 | #endif |
378cc40b | 1559 | |
7a3f2258 | 1560 | /* this is a drop-in replacement for memset() */ |
fc36a67e | 1561 | #ifndef HAS_MEMSET |
1562 | void * | |
7a3f2258 | 1563 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
fc36a67e | 1564 | { |
1565 | char *retval = loc; | |
1566 | ||
1567 | while (len--) | |
1568 | *loc++ = ch; | |
1569 | return retval; | |
1570 | } | |
1571 | #endif | |
1572 | ||
7a3f2258 | 1573 | /* this is a drop-in replacement for bzero() */ |
7c0587c8 | 1574 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1575 | char * |
7a3f2258 | 1576 | Perl_my_bzero(register char *loc, register I32 len) |
378cc40b LW |
1577 | { |
1578 | char *retval = loc; | |
1579 | ||
1580 | while (len--) | |
1581 | *loc++ = 0; | |
1582 | return retval; | |
1583 | } | |
1584 | #endif | |
7c0587c8 | 1585 | |
7a3f2258 | 1586 | /* this is a drop-in replacement for memcmp() */ |
36477c24 | 1587 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
79072805 | 1588 | I32 |
7a3f2258 | 1589 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
7c0587c8 | 1590 | { |
36477c24 | 1591 | register U8 *a = (U8 *)s1; |
1592 | register U8 *b = (U8 *)s2; | |
79072805 | 1593 | register I32 tmp; |
7c0587c8 LW |
1594 | |
1595 | while (len--) { | |
36477c24 | 1596 | if (tmp = *a++ - *b++) |
7c0587c8 LW |
1597 | return tmp; |
1598 | } | |
1599 | return 0; | |
1600 | } | |
36477c24 | 1601 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
a687059c | 1602 | |
fe14fcc3 | 1603 | #ifndef HAS_VPRINTF |
a687059c | 1604 | |
85e6fe83 | 1605 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1606 | char * |
1607 | #else | |
1608 | int | |
1609 | #endif | |
08105a92 | 1610 | vsprintf(char *dest, const char *pat, char *args) |
a687059c LW |
1611 | { |
1612 | FILE fakebuf; | |
1613 | ||
1614 | fakebuf._ptr = dest; | |
1615 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1616 | #ifndef _IOSTRG |
1617 | #define _IOSTRG 0 | |
1618 | #endif | |
a687059c LW |
1619 | fakebuf._flag = _IOWRT|_IOSTRG; |
1620 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1621 | (void)putc('\0', &fakebuf); | |
85e6fe83 | 1622 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1623 | return(dest); |
1624 | #else | |
1625 | return 0; /* perl doesn't use return value */ | |
1626 | #endif | |
1627 | } | |
1628 | ||
fe14fcc3 | 1629 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1630 | |
1631 | #ifdef MYSWAP | |
ffed7fef | 1632 | #if BYTEORDER != 0x4321 |
a687059c | 1633 | short |
864dbfa3 | 1634 | Perl_my_swap(pTHX_ short s) |
a687059c LW |
1635 | { |
1636 | #if (BYTEORDER & 1) == 0 | |
1637 | short result; | |
1638 | ||
1639 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1640 | return result; | |
1641 | #else | |
1642 | return s; | |
1643 | #endif | |
1644 | } | |
1645 | ||
1646 | long | |
864dbfa3 | 1647 | Perl_my_htonl(pTHX_ long l) |
a687059c LW |
1648 | { |
1649 | union { | |
1650 | long result; | |
ffed7fef | 1651 | char c[sizeof(long)]; |
a687059c LW |
1652 | } u; |
1653 | ||
ffed7fef | 1654 | #if BYTEORDER == 0x1234 |
a687059c LW |
1655 | u.c[0] = (l >> 24) & 255; |
1656 | u.c[1] = (l >> 16) & 255; | |
1657 | u.c[2] = (l >> 8) & 255; | |
1658 | u.c[3] = l & 255; | |
1659 | return u.result; | |
1660 | #else | |
ffed7fef | 1661 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1662 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1663 | #else |
79072805 LW |
1664 | register I32 o; |
1665 | register I32 s; | |
a687059c | 1666 | |
ffed7fef LW |
1667 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1668 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1669 | } |
1670 | return u.result; | |
1671 | #endif | |
1672 | #endif | |
1673 | } | |
1674 | ||
1675 | long | |
864dbfa3 | 1676 | Perl_my_ntohl(pTHX_ long l) |
a687059c LW |
1677 | { |
1678 | union { | |
1679 | long l; | |
ffed7fef | 1680 | char c[sizeof(long)]; |
a687059c LW |
1681 | } u; |
1682 | ||
ffed7fef | 1683 | #if BYTEORDER == 0x1234 |
a687059c LW |
1684 | u.c[0] = (l >> 24) & 255; |
1685 | u.c[1] = (l >> 16) & 255; | |
1686 | u.c[2] = (l >> 8) & 255; | |
1687 | u.c[3] = l & 255; | |
1688 | return u.l; | |
1689 | #else | |
ffed7fef | 1690 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1691 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1692 | #else |
79072805 LW |
1693 | register I32 o; |
1694 | register I32 s; | |
a687059c LW |
1695 | |
1696 | u.l = l; | |
1697 | l = 0; | |
ffed7fef LW |
1698 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1699 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1700 | } |
1701 | return l; | |
1702 | #endif | |
1703 | #endif | |
1704 | } | |
1705 | ||
ffed7fef | 1706 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1707 | #endif /* MYSWAP */ |
1708 | ||
1709 | /* | |
1710 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1711 | * If these functions are defined, | |
1712 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1713 | * However, this is not assumed. | |
1714 | * -DWS | |
1715 | */ | |
1716 | ||
1717 | #define HTOV(name,type) \ | |
1718 | type \ | |
ba106d47 | 1719 | name (register type n) \ |
988174c1 LW |
1720 | { \ |
1721 | union { \ | |
1722 | type value; \ | |
1723 | char c[sizeof(type)]; \ | |
1724 | } u; \ | |
79072805 LW |
1725 | register I32 i; \ |
1726 | register I32 s; \ | |
988174c1 LW |
1727 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1728 | u.c[i] = (n >> s) & 0xFF; \ | |
1729 | } \ | |
1730 | return u.value; \ | |
1731 | } | |
1732 | ||
1733 | #define VTOH(name,type) \ | |
1734 | type \ | |
ba106d47 | 1735 | name (register type n) \ |
988174c1 LW |
1736 | { \ |
1737 | union { \ | |
1738 | type value; \ | |
1739 | char c[sizeof(type)]; \ | |
1740 | } u; \ | |
79072805 LW |
1741 | register I32 i; \ |
1742 | register I32 s; \ | |
988174c1 LW |
1743 | u.value = n; \ |
1744 | n = 0; \ | |
1745 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1746 | n += (u.c[i] & 0xFF) << s; \ | |
1747 | } \ | |
1748 | return n; \ | |
1749 | } | |
1750 | ||
1751 | #if defined(HAS_HTOVS) && !defined(htovs) | |
1752 | HTOV(htovs,short) | |
1753 | #endif | |
1754 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1755 | HTOV(htovl,long) | |
1756 | #endif | |
1757 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1758 | VTOH(vtohs,short) | |
1759 | #endif | |
1760 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1761 | VTOH(vtohl,long) | |
1762 | #endif | |
a687059c | 1763 | |
4a7d1889 NIS |
1764 | PerlIO * |
1765 | Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) | |
1766 | { | |
2986a63f | 1767 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE) |
1f852d0d NIS |
1768 | int p[2]; |
1769 | register I32 This, that; | |
1770 | register Pid_t pid; | |
1771 | SV *sv; | |
1772 | I32 did_pipes = 0; | |
1773 | int pp[2]; | |
1774 | ||
1775 | PERL_FLUSHALL_FOR_CHILD; | |
1776 | This = (*mode == 'w'); | |
1777 | that = !This; | |
1778 | if (PL_tainting) { | |
1779 | taint_env(); | |
1780 | taint_proper("Insecure %s%s", "EXEC"); | |
1781 | } | |
1782 | if (PerlProc_pipe(p) < 0) | |
1783 | return Nullfp; | |
1784 | /* Try for another pipe pair for error return */ | |
1785 | if (PerlProc_pipe(pp) >= 0) | |
1786 | did_pipes = 1; | |
1787 | while ((pid = vfork()) < 0) { | |
1788 | if (errno != EAGAIN) { | |
1789 | PerlLIO_close(p[This]); | |
1790 | if (did_pipes) { | |
1791 | PerlLIO_close(pp[0]); | |
1792 | PerlLIO_close(pp[1]); | |
1793 | } | |
1794 | return Nullfp; | |
1795 | } | |
1796 | sleep(5); | |
1797 | } | |
1798 | if (pid == 0) { | |
1799 | /* Child */ | |
1f852d0d NIS |
1800 | #undef THIS |
1801 | #undef THAT | |
1802 | #define THIS that | |
1803 | #define THAT This | |
1804 | /* Close parent's end of _the_ pipe */ | |
1805 | PerlLIO_close(p[THAT]); | |
1806 | /* Close parent's end of error status pipe (if any) */ | |
1807 | if (did_pipes) { | |
1808 | PerlLIO_close(pp[0]); | |
1809 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1810 | /* Close error pipe automatically if exec works */ | |
1811 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1812 | #endif | |
1813 | } | |
1814 | /* Now dup our end of _the_ pipe to right position */ | |
1815 | if (p[THIS] != (*mode == 'r')) { | |
1816 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
1817 | PerlLIO_close(p[THIS]); | |
1818 | } | |
1819 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) | |
1820 | /* No automatic close - do it by hand */ | |
b7953727 JH |
1821 | # ifndef NOFILE |
1822 | # define NOFILE 20 | |
1823 | # endif | |
a080fe3d NIS |
1824 | { |
1825 | int fd; | |
1826 | ||
1827 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
1828 | if (fd != pp[1]) | |
1829 | PerlLIO_close(fd); | |
1830 | } | |
1f852d0d NIS |
1831 | } |
1832 | #endif | |
1833 | do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes); | |
1834 | PerlProc__exit(1); | |
1835 | #undef THIS | |
1836 | #undef THAT | |
1837 | } | |
1838 | /* Parent */ | |
1839 | do_execfree(); /* free any memory malloced by child on vfork */ | |
1840 | /* Close child's end of pipe */ | |
1841 | PerlLIO_close(p[that]); | |
1842 | if (did_pipes) | |
1843 | PerlLIO_close(pp[1]); | |
1844 | /* Keep the lower of the two fd numbers */ | |
1845 | if (p[that] < p[This]) { | |
1846 | PerlLIO_dup2(p[This], p[that]); | |
1847 | PerlLIO_close(p[This]); | |
1848 | p[This] = p[that]; | |
1849 | } | |
1850 | LOCK_FDPID_MUTEX; | |
1851 | sv = *av_fetch(PL_fdpid,p[This],TRUE); | |
1852 | UNLOCK_FDPID_MUTEX; | |
1853 | (void)SvUPGRADE(sv,SVt_IV); | |
1854 | SvIVX(sv) = pid; | |
1855 | PL_forkprocess = pid; | |
1856 | /* If we managed to get status pipe check for exec fail */ | |
1857 | if (did_pipes && pid > 0) { | |
1858 | int errkid; | |
1859 | int n = 0, n1; | |
1860 | ||
1861 | while (n < sizeof(int)) { | |
1862 | n1 = PerlLIO_read(pp[0], | |
1863 | (void*)(((char*)&errkid)+n), | |
1864 | (sizeof(int)) - n); | |
1865 | if (n1 <= 0) | |
1866 | break; | |
1867 | n += n1; | |
1868 | } | |
1869 | PerlLIO_close(pp[0]); | |
1870 | did_pipes = 0; | |
1871 | if (n) { /* Error */ | |
1872 | int pid2, status; | |
1873 | if (n != sizeof(int)) | |
1874 | Perl_croak(aTHX_ "panic: kid popen errno read"); | |
1875 | do { | |
1876 | pid2 = wait4pid(pid, &status, 0); | |
1877 | } while (pid2 == -1 && errno == EINTR); | |
1878 | errno = errkid; /* Propagate errno from kid */ | |
1879 | return Nullfp; | |
1880 | } | |
1881 | } | |
1882 | if (did_pipes) | |
1883 | PerlLIO_close(pp[0]); | |
1884 | return PerlIO_fdopen(p[This], mode); | |
1885 | #else | |
4a7d1889 NIS |
1886 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
1887 | return (PerlIO *) NULL; | |
1f852d0d | 1888 | #endif |
4a7d1889 NIS |
1889 | } |
1890 | ||
5f05dabc | 1891 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
cd39f2b6 | 1892 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
760ac839 | 1893 | PerlIO * |
864dbfa3 | 1894 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
a687059c LW |
1895 | { |
1896 | int p[2]; | |
8ac85365 | 1897 | register I32 This, that; |
d8a83dd3 | 1898 | register Pid_t pid; |
79072805 | 1899 | SV *sv; |
1738f5c4 | 1900 | I32 doexec = strNE(cmd,"-"); |
e446cec8 IZ |
1901 | I32 did_pipes = 0; |
1902 | int pp[2]; | |
a687059c | 1903 | |
45bc9206 | 1904 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
1905 | #ifdef OS2 |
1906 | if (doexec) { | |
23da6c43 | 1907 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 1908 | } |
a1d180c4 | 1909 | #endif |
8ac85365 NIS |
1910 | This = (*mode == 'w'); |
1911 | that = !This; | |
3280af22 | 1912 | if (doexec && PL_tainting) { |
bbce6d69 | 1913 | taint_env(); |
1914 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 1915 | } |
c2267164 IZ |
1916 | if (PerlProc_pipe(p) < 0) |
1917 | return Nullfp; | |
e446cec8 IZ |
1918 | if (doexec && PerlProc_pipe(pp) >= 0) |
1919 | did_pipes = 1; | |
a687059c LW |
1920 | while ((pid = (doexec?vfork():fork())) < 0) { |
1921 | if (errno != EAGAIN) { | |
6ad3d225 | 1922 | PerlLIO_close(p[This]); |
e446cec8 IZ |
1923 | if (did_pipes) { |
1924 | PerlLIO_close(pp[0]); | |
1925 | PerlLIO_close(pp[1]); | |
1926 | } | |
a687059c | 1927 | if (!doexec) |
cea2e8a9 | 1928 | Perl_croak(aTHX_ "Can't fork"); |
a687059c LW |
1929 | return Nullfp; |
1930 | } | |
1931 | sleep(5); | |
1932 | } | |
1933 | if (pid == 0) { | |
79072805 LW |
1934 | GV* tmpgv; |
1935 | ||
30ac6d9b GS |
1936 | #undef THIS |
1937 | #undef THAT | |
a687059c | 1938 | #define THIS that |
8ac85365 | 1939 | #define THAT This |
6ad3d225 | 1940 | PerlLIO_close(p[THAT]); |
e446cec8 IZ |
1941 | if (did_pipes) { |
1942 | PerlLIO_close(pp[0]); | |
1943 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1944 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1945 | #endif | |
1946 | } | |
a687059c | 1947 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
1948 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
1949 | PerlLIO_close(p[THIS]); | |
a687059c | 1950 | } |
4435c477 | 1951 | #ifndef OS2 |
a687059c | 1952 | if (doexec) { |
a0d0e21e | 1953 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1954 | int fd; |
1955 | ||
1956 | #ifndef NOFILE | |
1957 | #define NOFILE 20 | |
1958 | #endif | |
a080fe3d NIS |
1959 | { |
1960 | int fd; | |
1961 | ||
1962 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
1963 | if (fd != pp[1]) | |
1964 | PerlLIO_close(fd); | |
1965 | } | |
ae986130 | 1966 | #endif |
a080fe3d NIS |
1967 | /* may or may not use the shell */ |
1968 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 1969 | PerlProc__exit(1); |
a687059c | 1970 | } |
4435c477 | 1971 | #endif /* defined OS2 */ |
de3bb511 | 1972 | /*SUPPRESS 560*/ |
155aba94 | 1973 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) |
7766f137 | 1974 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
3280af22 NIS |
1975 | PL_forkprocess = 0; |
1976 | hv_clear(PL_pidstatus); /* we have no children */ | |
a687059c LW |
1977 | return Nullfp; |
1978 | #undef THIS | |
1979 | #undef THAT | |
1980 | } | |
62b28dd9 | 1981 | do_execfree(); /* free any memory malloced by child on vfork */ |
6ad3d225 | 1982 | PerlLIO_close(p[that]); |
e446cec8 IZ |
1983 | if (did_pipes) |
1984 | PerlLIO_close(pp[1]); | |
8ac85365 | 1985 | if (p[that] < p[This]) { |
6ad3d225 GS |
1986 | PerlLIO_dup2(p[This], p[that]); |
1987 | PerlLIO_close(p[This]); | |
8ac85365 | 1988 | p[This] = p[that]; |
62b28dd9 | 1989 | } |
4755096e | 1990 | LOCK_FDPID_MUTEX; |
3280af22 | 1991 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
4755096e | 1992 | UNLOCK_FDPID_MUTEX; |
a0d0e21e | 1993 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 1994 | SvIVX(sv) = pid; |
3280af22 | 1995 | PL_forkprocess = pid; |
e446cec8 IZ |
1996 | if (did_pipes && pid > 0) { |
1997 | int errkid; | |
1998 | int n = 0, n1; | |
1999 | ||
2000 | while (n < sizeof(int)) { | |
2001 | n1 = PerlLIO_read(pp[0], | |
2002 | (void*)(((char*)&errkid)+n), | |
2003 | (sizeof(int)) - n); | |
2004 | if (n1 <= 0) | |
2005 | break; | |
2006 | n += n1; | |
2007 | } | |
2f96c702 IZ |
2008 | PerlLIO_close(pp[0]); |
2009 | did_pipes = 0; | |
e446cec8 | 2010 | if (n) { /* Error */ |
faa466a7 | 2011 | int pid2, status; |
e446cec8 | 2012 | if (n != sizeof(int)) |
cea2e8a9 | 2013 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
faa466a7 RG |
2014 | do { |
2015 | pid2 = wait4pid(pid, &status, 0); | |
2016 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 IZ |
2017 | errno = errkid; /* Propagate errno from kid */ |
2018 | return Nullfp; | |
2019 | } | |
2020 | } | |
2021 | if (did_pipes) | |
2022 | PerlLIO_close(pp[0]); | |
8ac85365 | 2023 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2024 | } |
7c0587c8 | 2025 | #else |
2b96b0a5 | 2026 | #if defined(atarist) |
7c0587c8 | 2027 | FILE *popen(); |
760ac839 | 2028 | PerlIO * |
864dbfa3 | 2029 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
7c0587c8 | 2030 | { |
45bc9206 | 2031 | PERL_FLUSHALL_FOR_CHILD; |
a1d180c4 NIS |
2032 | /* Call system's popen() to get a FILE *, then import it. |
2033 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2034 | apparently not used | |
2035 | */ | |
2036 | return PerlIO_importFILE(popen(cmd, mode), 0); | |
7c0587c8 | 2037 | } |
2b96b0a5 JH |
2038 | #else |
2039 | #if defined(DJGPP) | |
2040 | FILE *djgpp_popen(); | |
2041 | PerlIO * | |
2042 | Perl_my_popen(pTHX_ char *cmd, char *mode) | |
2043 | { | |
2044 | PERL_FLUSHALL_FOR_CHILD; | |
2045 | /* Call system's popen() to get a FILE *, then import it. | |
2046 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2047 | apparently not used | |
2048 | */ | |
2049 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2050 | } | |
2051 | #endif | |
7c0587c8 LW |
2052 | #endif |
2053 | ||
2054 | #endif /* !DOSISH */ | |
a687059c | 2055 | |
748a9306 | 2056 | #ifdef DUMP_FDS |
35ff7856 | 2057 | void |
864dbfa3 | 2058 | Perl_dump_fds(pTHX_ char *s) |
ae986130 LW |
2059 | { |
2060 | int fd; | |
2061 | struct stat tmpstatbuf; | |
2062 | ||
bf49b057 | 2063 | PerlIO_printf(Perl_debug_log,"%s", s); |
ae986130 | 2064 | for (fd = 0; fd < 32; fd++) { |
6ad3d225 | 2065 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
bf49b057 | 2066 | PerlIO_printf(Perl_debug_log," %d",fd); |
ae986130 | 2067 | } |
bf49b057 | 2068 | PerlIO_printf(Perl_debug_log,"\n"); |
ae986130 | 2069 | } |
35ff7856 | 2070 | #endif /* DUMP_FDS */ |
ae986130 | 2071 | |
fe14fcc3 | 2072 | #ifndef HAS_DUP2 |
fec02dd3 | 2073 | int |
ba106d47 | 2074 | dup2(int oldfd, int newfd) |
a687059c | 2075 | { |
a0d0e21e | 2076 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2077 | if (oldfd == newfd) |
2078 | return oldfd; | |
6ad3d225 | 2079 | PerlLIO_close(newfd); |
fec02dd3 | 2080 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2081 | #else |
fc36a67e | 2082 | #define DUP2_MAX_FDS 256 |
2083 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2084 | I32 fdx = 0; |
ae986130 LW |
2085 | int fd; |
2086 | ||
fe14fcc3 | 2087 | if (oldfd == newfd) |
fec02dd3 | 2088 | return oldfd; |
6ad3d225 | 2089 | PerlLIO_close(newfd); |
fc36a67e | 2090 | /* good enough for low fd's... */ |
6ad3d225 | 2091 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2092 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2093 | PerlLIO_close(fd); |
fc36a67e | 2094 | fd = -1; |
2095 | break; | |
2096 | } | |
ae986130 | 2097 | fdtmp[fdx++] = fd; |
fc36a67e | 2098 | } |
ae986130 | 2099 | while (fdx > 0) |
6ad3d225 | 2100 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2101 | return fd; |
62b28dd9 | 2102 | #endif |
a687059c LW |
2103 | } |
2104 | #endif | |
2105 | ||
64ca3a65 | 2106 | #ifndef PERL_MICRO |
ff68c719 | 2107 | #ifdef HAS_SIGACTION |
2108 | ||
2109 | Sighandler_t | |
864dbfa3 | 2110 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2111 | { |
2112 | struct sigaction act, oact; | |
2113 | ||
2114 | act.sa_handler = handler; | |
2115 | sigemptyset(&act.sa_mask); | |
2116 | act.sa_flags = 0; | |
2117 | #ifdef SA_RESTART | |
0a8e0eff | 2118 | #if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS) |
ff68c719 | 2119 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
2120 | #endif | |
0a8e0eff | 2121 | #endif |
85264bed CS |
2122 | #ifdef SA_NOCLDWAIT |
2123 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) | |
2124 | act.sa_flags |= SA_NOCLDWAIT; | |
2125 | #endif | |
ff68c719 | 2126 | if (sigaction(signo, &act, &oact) == -1) |
36477c24 | 2127 | return SIG_ERR; |
ff68c719 | 2128 | else |
36477c24 | 2129 | return oact.sa_handler; |
ff68c719 | 2130 | } |
2131 | ||
2132 | Sighandler_t | |
864dbfa3 | 2133 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2134 | { |
2135 | struct sigaction oact; | |
2136 | ||
2137 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
2138 | return SIG_ERR; | |
2139 | else | |
2140 | return oact.sa_handler; | |
2141 | } | |
2142 | ||
2143 | int | |
864dbfa3 | 2144 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2145 | { |
2146 | struct sigaction act; | |
2147 | ||
2148 | act.sa_handler = handler; | |
2149 | sigemptyset(&act.sa_mask); | |
2150 | act.sa_flags = 0; | |
2151 | #ifdef SA_RESTART | |
0a8e0eff | 2152 | #if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS) |
ff68c719 | 2153 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
2154 | #endif | |
0a8e0eff | 2155 | #endif |
85264bed CS |
2156 | #ifdef SA_NOCLDWAIT |
2157 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) | |
2158 | act.sa_flags |= SA_NOCLDWAIT; | |
2159 | #endif | |
ff68c719 | 2160 | return sigaction(signo, &act, save); |
2161 | } | |
2162 | ||
2163 | int | |
864dbfa3 | 2164 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2165 | { |
2166 | return sigaction(signo, save, (struct sigaction *)NULL); | |
2167 | } | |
2168 | ||
2169 | #else /* !HAS_SIGACTION */ | |
2170 | ||
2171 | Sighandler_t | |
864dbfa3 | 2172 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2173 | { |
6ad3d225 | 2174 | return PerlProc_signal(signo, handler); |
ff68c719 | 2175 | } |
2176 | ||
2177 | static int sig_trapped; | |
2178 | ||
2179 | static | |
2180 | Signal_t | |
4e35701f | 2181 | sig_trap(int signo) |
ff68c719 | 2182 | { |
2183 | sig_trapped++; | |
2184 | } | |
2185 | ||
2186 | Sighandler_t | |
864dbfa3 | 2187 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2188 | { |
2189 | Sighandler_t oldsig; | |
2190 | ||
2191 | sig_trapped = 0; | |
6ad3d225 GS |
2192 | oldsig = PerlProc_signal(signo, sig_trap); |
2193 | PerlProc_signal(signo, oldsig); | |
ff68c719 | 2194 | if (sig_trapped) |
7766f137 | 2195 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2196 | return oldsig; |
2197 | } | |
2198 | ||
2199 | int | |
864dbfa3 | 2200 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2201 | { |
6ad3d225 | 2202 | *save = PerlProc_signal(signo, handler); |
ff68c719 | 2203 | return (*save == SIG_ERR) ? -1 : 0; |
2204 | } | |
2205 | ||
2206 | int | |
864dbfa3 | 2207 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2208 | { |
6ad3d225 | 2209 | return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0; |
ff68c719 | 2210 | } |
2211 | ||
2212 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2213 | #endif /* !PERL_MICRO */ |
ff68c719 | 2214 | |
5f05dabc | 2215 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
cd39f2b6 | 2216 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
79072805 | 2217 | I32 |
864dbfa3 | 2218 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2219 | { |
ff68c719 | 2220 | Sigsave_t hstat, istat, qstat; |
a687059c | 2221 | int status; |
a0d0e21e | 2222 | SV **svp; |
d8a83dd3 JH |
2223 | Pid_t pid; |
2224 | Pid_t pid2; | |
03136e13 | 2225 | bool close_failed; |
b7953727 | 2226 | int saved_errno = 0; |
03136e13 CS |
2227 | #ifdef VMS |
2228 | int saved_vaxc_errno; | |
2229 | #endif | |
22fae026 TM |
2230 | #ifdef WIN32 |
2231 | int saved_win32_errno; | |
2232 | #endif | |
a687059c | 2233 | |
4755096e | 2234 | LOCK_FDPID_MUTEX; |
3280af22 | 2235 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
4755096e | 2236 | UNLOCK_FDPID_MUTEX; |
25d92023 | 2237 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
a0d0e21e | 2238 | SvREFCNT_dec(*svp); |
3280af22 | 2239 | *svp = &PL_sv_undef; |
ddcf38b7 IZ |
2240 | #ifdef OS2 |
2241 | if (pid == -1) { /* Opened by popen. */ | |
2242 | return my_syspclose(ptr); | |
2243 | } | |
a1d180c4 | 2244 | #endif |
03136e13 CS |
2245 | if ((close_failed = (PerlIO_close(ptr) == EOF))) { |
2246 | saved_errno = errno; | |
2247 | #ifdef VMS | |
2248 | saved_vaxc_errno = vaxc$errno; | |
2249 | #endif | |
22fae026 TM |
2250 | #ifdef WIN32 |
2251 | saved_win32_errno = GetLastError(); | |
2252 | #endif | |
03136e13 | 2253 | } |
7c0587c8 | 2254 | #ifdef UTS |
6ad3d225 | 2255 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
7c0587c8 | 2256 | #endif |
64ca3a65 | 2257 | #ifndef PERL_MICRO |
ff68c719 | 2258 | rsignal_save(SIGHUP, SIG_IGN, &hstat); |
2259 | rsignal_save(SIGINT, SIG_IGN, &istat); | |
2260 | rsignal_save(SIGQUIT, SIG_IGN, &qstat); | |
64ca3a65 | 2261 | #endif |
748a9306 | 2262 | do { |
1d3434b8 GS |
2263 | pid2 = wait4pid(pid, &status, 0); |
2264 | } while (pid2 == -1 && errno == EINTR); | |
64ca3a65 | 2265 | #ifndef PERL_MICRO |
ff68c719 | 2266 | rsignal_restore(SIGHUP, &hstat); |
2267 | rsignal_restore(SIGINT, &istat); | |
2268 | rsignal_restore(SIGQUIT, &qstat); | |
64ca3a65 | 2269 | #endif |
03136e13 CS |
2270 | if (close_failed) { |
2271 | SETERRNO(saved_errno, saved_vaxc_errno); | |
2272 | return -1; | |
2273 | } | |
1d3434b8 | 2274 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
20188a90 | 2275 | } |
4633a7c4 LW |
2276 | #endif /* !DOSISH */ |
2277 | ||
2986a63f | 2278 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL) |
79072805 | 2279 | I32 |
d8a83dd3 | 2280 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2281 | { |
b7953727 JH |
2282 | if (!pid) |
2283 | return -1; | |
2284 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2285 | { | |
79072805 LW |
2286 | SV *sv; |
2287 | SV** svp; | |
fc36a67e | 2288 | char spid[TYPE_CHARS(int)]; |
20188a90 | 2289 | |
20188a90 | 2290 | if (pid > 0) { |
7b0972df | 2291 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 NIS |
2292 | svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); |
2293 | if (svp && *svp != &PL_sv_undef) { | |
463ee0b2 | 2294 | *statusp = SvIVX(*svp); |
3280af22 | 2295 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); |
20188a90 LW |
2296 | return pid; |
2297 | } | |
2298 | } | |
2299 | else { | |
79072805 | 2300 | HE *entry; |
20188a90 | 2301 | |
3280af22 | 2302 | hv_iterinit(PL_pidstatus); |
155aba94 | 2303 | if ((entry = hv_iternext(PL_pidstatus))) { |
a0d0e21e | 2304 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
3280af22 | 2305 | sv = hv_iterval(PL_pidstatus,entry); |
463ee0b2 | 2306 | *statusp = SvIVX(sv); |
7b0972df | 2307 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 | 2308 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); |
20188a90 LW |
2309 | return pid; |
2310 | } | |
b7953727 | 2311 | } |
20188a90 | 2312 | } |
68a29c53 | 2313 | #endif |
79072805 | 2314 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2315 | # ifdef HAS_WAITPID_RUNTIME |
2316 | if (!HAS_WAITPID_RUNTIME) | |
2317 | goto hard_way; | |
2318 | # endif | |
f55ee38a | 2319 | return PerlProc_waitpid(pid,statusp,flags); |
367f3c24 IZ |
2320 | #endif |
2321 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
a0d0e21e | 2322 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
367f3c24 IZ |
2323 | #endif |
2324 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2325 | hard_way: | |
a0d0e21e LW |
2326 | { |
2327 | I32 result; | |
2328 | if (flags) | |
cea2e8a9 | 2329 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2330 | else { |
76e3520e | 2331 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2332 | pidgone(result,*statusp); |
2333 | if (result < 0) | |
2334 | *statusp = -1; | |
2335 | } | |
2336 | return result; | |
a687059c LW |
2337 | } |
2338 | #endif | |
a687059c | 2339 | } |
2986a63f | 2340 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2341 | |
7c0587c8 | 2342 | void |
de3bb511 | 2343 | /*SUPPRESS 590*/ |
d8a83dd3 | 2344 | Perl_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2345 | { |
79072805 | 2346 | register SV *sv; |
fc36a67e | 2347 | char spid[TYPE_CHARS(int)]; |
a687059c | 2348 | |
7b0972df | 2349 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 | 2350 | sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e | 2351 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 2352 | SvIVX(sv) = status; |
20188a90 | 2353 | return; |
a687059c LW |
2354 | } |
2355 | ||
2b96b0a5 | 2356 | #if defined(atarist) || defined(OS2) |
7c0587c8 | 2357 | int pclose(); |
ddcf38b7 IZ |
2358 | #ifdef HAS_FORK |
2359 | int /* Cannot prototype with I32 | |
2360 | in os2ish.h. */ | |
ba106d47 | 2361 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 2362 | #else |
79072805 | 2363 | I32 |
864dbfa3 | 2364 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 2365 | #endif |
a687059c | 2366 | { |
760ac839 LW |
2367 | /* Needs work for PerlIO ! */ |
2368 | FILE *f = PerlIO_findFILE(ptr); | |
2369 | I32 result = pclose(f); | |
2b96b0a5 JH |
2370 | PerlIO_releaseFILE(ptr,f); |
2371 | return result; | |
2372 | } | |
2373 | #endif | |
2374 | ||
933fea7f | 2375 | #if defined(DJGPP) |
2b96b0a5 JH |
2376 | int djgpp_pclose(); |
2377 | I32 | |
2378 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2379 | { | |
2380 | /* Needs work for PerlIO ! */ | |
2381 | FILE *f = PerlIO_findFILE(ptr); | |
2382 | I32 result = djgpp_pclose(f); | |
933fea7f | 2383 | result = (result << 8) & 0xff00; |
760ac839 LW |
2384 | PerlIO_releaseFILE(ptr,f); |
2385 | return result; | |
a687059c | 2386 | } |
7c0587c8 | 2387 | #endif |
9f68db38 LW |
2388 | |
2389 | void | |
864dbfa3 | 2390 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
9f68db38 | 2391 | { |
79072805 | 2392 | register I32 todo; |
08105a92 | 2393 | register const char *frombase = from; |
9f68db38 LW |
2394 | |
2395 | if (len == 1) { | |
08105a92 | 2396 | register const char c = *from; |
9f68db38 | 2397 | while (count-- > 0) |
5926133d | 2398 | *to++ = c; |
9f68db38 LW |
2399 | return; |
2400 | } | |
2401 | while (count-- > 0) { | |
2402 | for (todo = len; todo > 0; todo--) { | |
2403 | *to++ = *from++; | |
2404 | } | |
2405 | from = frombase; | |
2406 | } | |
2407 | } | |
0f85fab0 | 2408 | |
fe14fcc3 | 2409 | #ifndef HAS_RENAME |
79072805 | 2410 | I32 |
864dbfa3 | 2411 | Perl_same_dirent(pTHX_ char *a, char *b) |
62b28dd9 | 2412 | { |
93a17b20 LW |
2413 | char *fa = strrchr(a,'/'); |
2414 | char *fb = strrchr(b,'/'); | |
62b28dd9 LW |
2415 | struct stat tmpstatbuf1; |
2416 | struct stat tmpstatbuf2; | |
46fc3d4c | 2417 | SV *tmpsv = sv_newmortal(); |
62b28dd9 LW |
2418 | |
2419 | if (fa) | |
2420 | fa++; | |
2421 | else | |
2422 | fa = a; | |
2423 | if (fb) | |
2424 | fb++; | |
2425 | else | |
2426 | fb = b; | |
2427 | if (strNE(a,b)) | |
2428 | return FALSE; | |
2429 | if (fa == a) | |
46fc3d4c | 2430 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2431 | else |
46fc3d4c | 2432 | sv_setpvn(tmpsv, a, fa - a); |
c6ed36e1 | 2433 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
2434 | return FALSE; |
2435 | if (fb == b) | |
46fc3d4c | 2436 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2437 | else |
46fc3d4c | 2438 | sv_setpvn(tmpsv, b, fb - b); |
c6ed36e1 | 2439 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
2440 | return FALSE; |
2441 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
2442 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
2443 | } | |
fe14fcc3 LW |
2444 | #endif /* !HAS_RENAME */ |
2445 | ||
491527d0 | 2446 | char* |
864dbfa3 | 2447 | Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags) |
491527d0 | 2448 | { |
491527d0 GS |
2449 | char *xfound = Nullch; |
2450 | char *xfailed = Nullch; | |
0f31cffe | 2451 | char tmpbuf[MAXPATHLEN]; |
491527d0 GS |
2452 | register char *s; |
2453 | I32 len; | |
2454 | int retval; | |
2455 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) | |
2456 | # define SEARCH_EXTS ".bat", ".cmd", NULL | |
2457 | # define MAX_EXT_LEN 4 | |
2458 | #endif | |
2459 | #ifdef OS2 | |
2460 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
2461 | # define MAX_EXT_LEN 4 | |
2462 | #endif | |
2463 | #ifdef VMS | |
2464 | # define SEARCH_EXTS ".pl", ".com", NULL | |
2465 | # define MAX_EXT_LEN 4 | |
2466 | #endif | |
2467 | /* additional extensions to try in each dir if scriptname not found */ | |
2468 | #ifdef SEARCH_EXTS | |
2469 | char *exts[] = { SEARCH_EXTS }; | |
2470 | char **ext = search_ext ? search_ext : exts; | |
2471 | int extidx = 0, i = 0; | |
2472 | char *curext = Nullch; | |
2473 | #else | |
2474 | # define MAX_EXT_LEN 0 | |
2475 | #endif | |
2476 | ||
2477 | /* | |
2478 | * If dosearch is true and if scriptname does not contain path | |
2479 | * delimiters, search the PATH for scriptname. | |
2480 | * | |
2481 | * If SEARCH_EXTS is also defined, will look for each | |
2482 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
2483 | * while searching the PATH. | |
2484 | * | |
2485 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
2486 | * proceeds as follows: | |
2487 | * If DOSISH or VMSISH: | |
2488 | * + look for ./scriptname{,.foo,.bar} | |
2489 | * + search the PATH for scriptname{,.foo,.bar} | |
2490 | * | |
2491 | * If !DOSISH: | |
2492 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
2493 | * this will not look in '.' if it's not in the PATH) | |
2494 | */ | |
84486fc6 | 2495 | tmpbuf[0] = '\0'; |
491527d0 GS |
2496 | |
2497 | #ifdef VMS | |
2498 | # ifdef ALWAYS_DEFTYPES | |
2499 | len = strlen(scriptname); | |
2500 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
2501 | int hasdir, idx = 0, deftypes = 1; | |
2502 | bool seen_dot = 1; | |
2503 | ||
2504 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; | |
2505 | # else | |
2506 | if (dosearch) { | |
2507 | int hasdir, idx = 0, deftypes = 1; | |
2508 | bool seen_dot = 1; | |
2509 | ||
2510 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; | |
2511 | # endif | |
2512 | /* The first time through, just add SEARCH_EXTS to whatever we | |
2513 | * already have, so we can check for default file types. */ | |
2514 | while (deftypes || | |
84486fc6 | 2515 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 GS |
2516 | { |
2517 | if (deftypes) { | |
2518 | deftypes = 0; | |
84486fc6 | 2519 | *tmpbuf = '\0'; |
491527d0 | 2520 | } |
84486fc6 GS |
2521 | if ((strlen(tmpbuf) + strlen(scriptname) |
2522 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 2523 | continue; /* don't search dir with too-long name */ |
84486fc6 | 2524 | strcat(tmpbuf, scriptname); |
491527d0 GS |
2525 | #else /* !VMS */ |
2526 | ||
2527 | #ifdef DOSISH | |
2528 | if (strEQ(scriptname, "-")) | |
2529 | dosearch = 0; | |
2530 | if (dosearch) { /* Look in '.' first. */ | |
2531 | char *cur = scriptname; | |
2532 | #ifdef SEARCH_EXTS | |
2533 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
2534 | while (ext[i]) | |
2535 | if (strEQ(ext[i++],curext)) { | |
2536 | extidx = -1; /* already has an ext */ | |
2537 | break; | |
2538 | } | |
2539 | do { | |
2540 | #endif | |
2541 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
2542 | "Looking for %s\n",cur)); | |
017f25f1 IZ |
2543 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
2544 | && !S_ISDIR(PL_statbuf.st_mode)) { | |
491527d0 GS |
2545 | dosearch = 0; |
2546 | scriptname = cur; | |
2547 | #ifdef SEARCH_EXTS | |
2548 | break; | |
2549 | #endif | |
2550 | } | |
2551 | #ifdef SEARCH_EXTS | |
2552 | if (cur == scriptname) { | |
2553 | len = strlen(scriptname); | |
84486fc6 | 2554 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 2555 | break; |
84486fc6 | 2556 | cur = strcpy(tmpbuf, scriptname); |
491527d0 GS |
2557 | } |
2558 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2559 | && strcpy(tmpbuf+len, ext[extidx++])); |
491527d0 GS |
2560 | #endif |
2561 | } | |
2562 | #endif | |
2563 | ||
cd39f2b6 JH |
2564 | #ifdef MACOS_TRADITIONAL |
2565 | if (dosearch && !strchr(scriptname, ':') && | |
2566 | (s = PerlEnv_getenv("Commands"))) | |
2567 | #else | |
491527d0 GS |
2568 | if (dosearch && !strchr(scriptname, '/') |
2569 | #ifdef DOSISH | |
2570 | && !strchr(scriptname, '\\') | |
2571 | #endif | |
cd39f2b6 JH |
2572 | && (s = PerlEnv_getenv("PATH"))) |
2573 | #endif | |
2574 | { | |
491527d0 GS |
2575 | bool seen_dot = 0; |
2576 | ||
3280af22 NIS |
2577 | PL_bufend = s + strlen(s); |
2578 | while (s < PL_bufend) { | |
cd39f2b6 JH |
2579 | #ifdef MACOS_TRADITIONAL |
2580 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, | |
2581 | ',', | |
2582 | &len); | |
2583 | #else | |
491527d0 GS |
2584 | #if defined(atarist) || defined(DOSISH) |
2585 | for (len = 0; *s | |
2586 | # ifdef atarist | |
2587 | && *s != ',' | |
2588 | # endif | |
2589 | && *s != ';'; len++, s++) { | |
84486fc6 GS |
2590 | if (len < sizeof tmpbuf) |
2591 | tmpbuf[len] = *s; | |
491527d0 | 2592 | } |
84486fc6 GS |
2593 | if (len < sizeof tmpbuf) |
2594 | tmpbuf[len] = '\0'; | |
491527d0 | 2595 | #else /* ! (atarist || DOSISH) */ |
3280af22 | 2596 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
491527d0 GS |
2597 | ':', |
2598 | &len); | |
2599 | #endif /* ! (atarist || DOSISH) */ | |
cd39f2b6 | 2600 | #endif /* MACOS_TRADITIONAL */ |
3280af22 | 2601 | if (s < PL_bufend) |
491527d0 | 2602 | s++; |
84486fc6 | 2603 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 | 2604 | continue; /* don't search dir with too-long name */ |
cd39f2b6 JH |
2605 | #ifdef MACOS_TRADITIONAL |
2606 | if (len && tmpbuf[len - 1] != ':') | |
2607 | tmpbuf[len++] = ':'; | |
2608 | #else | |
491527d0 | 2609 | if (len |
61ae2fbf | 2610 | #if defined(atarist) || defined(__MINT__) || defined(DOSISH) |
84486fc6 GS |
2611 | && tmpbuf[len - 1] != '/' |
2612 | && tmpbuf[len - 1] != '\\' | |
491527d0 GS |
2613 | #endif |
2614 | ) | |
84486fc6 GS |
2615 | tmpbuf[len++] = '/'; |
2616 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 2617 | seen_dot = 1; |
cd39f2b6 | 2618 | #endif |
84486fc6 | 2619 | (void)strcpy(tmpbuf + len, scriptname); |
491527d0 GS |
2620 | #endif /* !VMS */ |
2621 | ||
2622 | #ifdef SEARCH_EXTS | |
84486fc6 | 2623 | len = strlen(tmpbuf); |
491527d0 GS |
2624 | if (extidx > 0) /* reset after previous loop */ |
2625 | extidx = 0; | |
2626 | do { | |
2627 | #endif | |
84486fc6 | 2628 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
3280af22 | 2629 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
017f25f1 IZ |
2630 | if (S_ISDIR(PL_statbuf.st_mode)) { |
2631 | retval = -1; | |
2632 | } | |
491527d0 GS |
2633 | #ifdef SEARCH_EXTS |
2634 | } while ( retval < 0 /* not there */ | |
2635 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2636 | && strcpy(tmpbuf+len, ext[extidx++]) |
491527d0 GS |
2637 | ); |
2638 | #endif | |
2639 | if (retval < 0) | |
2640 | continue; | |
3280af22 NIS |
2641 | if (S_ISREG(PL_statbuf.st_mode) |
2642 | && cando(S_IRUSR,TRUE,&PL_statbuf) | |
73811745 | 2643 | #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL) |
3280af22 | 2644 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
491527d0 GS |
2645 | #endif |
2646 | ) | |
2647 | { | |
84486fc6 | 2648 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
2649 | break; |
2650 | } | |
2651 | if (!xfailed) | |
84486fc6 | 2652 | xfailed = savepv(tmpbuf); |
491527d0 GS |
2653 | } |
2654 | #ifndef DOSISH | |
017f25f1 | 2655 | if (!xfound && !seen_dot && !xfailed && |
a1d180c4 | 2656 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
017f25f1 | 2657 | || S_ISDIR(PL_statbuf.st_mode))) |
491527d0 GS |
2658 | #endif |
2659 | seen_dot = 1; /* Disable message. */ | |
9ccb31f9 GS |
2660 | if (!xfound) { |
2661 | if (flags & 1) { /* do or die? */ | |
cea2e8a9 | 2662 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
2663 | (xfailed ? "execute" : "find"), |
2664 | (xfailed ? xfailed : scriptname), | |
2665 | (xfailed ? "" : " on PATH"), | |
2666 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
2667 | } | |
2668 | scriptname = Nullch; | |
2669 | } | |
491527d0 GS |
2670 | if (xfailed) |
2671 | Safefree(xfailed); | |
2672 | scriptname = xfound; | |
2673 | } | |
9ccb31f9 | 2674 | return (scriptname ? savepv(scriptname) : Nullch); |
491527d0 GS |
2675 | } |
2676 | ||
ba869deb GS |
2677 | #ifndef PERL_GET_CONTEXT_DEFINED |
2678 | ||
2679 | void * | |
2680 | Perl_get_context(void) | |
2681 | { | |
2682 | #if defined(USE_THREADS) || defined(USE_ITHREADS) | |
2683 | # ifdef OLD_PTHREADS_API | |
2684 | pthread_addr_t t; | |
2685 | if (pthread_getspecific(PL_thr_key, &t)) | |
2686 | Perl_croak_nocontext("panic: pthread_getspecific"); | |
2687 | return (void*)t; | |
2688 | # else | |
bce813aa | 2689 | # ifdef I_MACH_CTHREADS |
8b8b35ab | 2690 | return (void*)cthread_data(cthread_self()); |
bce813aa | 2691 | # else |
8b8b35ab JH |
2692 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
2693 | # endif | |
c44d3fdb | 2694 | # endif |
ba869deb GS |
2695 | #else |
2696 | return (void*)NULL; | |
2697 | #endif | |
2698 | } | |
2699 | ||
2700 | void | |
2701 | Perl_set_context(void *t) | |
2702 | { | |
2703 | #if defined(USE_THREADS) || defined(USE_ITHREADS) | |
c44d3fdb GS |
2704 | # ifdef I_MACH_CTHREADS |
2705 | cthread_set_data(cthread_self(), t); | |
2706 | # else | |
ba869deb GS |
2707 | if (pthread_setspecific(PL_thr_key, t)) |
2708 | Perl_croak_nocontext("panic: pthread_setspecific"); | |
c44d3fdb | 2709 | # endif |
ba869deb GS |
2710 | #endif |
2711 | } | |
2712 | ||
2713 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 2714 | |
11343788 | 2715 | #ifdef USE_THREADS |
ba869deb | 2716 | |
12ca11f6 MB |
2717 | #ifdef FAKE_THREADS |
2718 | /* Very simplistic scheduler for now */ | |
2719 | void | |
2720 | schedule(void) | |
2721 | { | |
c7848ba1 | 2722 | thr = thr->i.next_run; |
12ca11f6 MB |
2723 | } |
2724 | ||
2725 | void | |
864dbfa3 | 2726 | Perl_cond_init(pTHX_ perl_cond *cp) |
12ca11f6 MB |
2727 | { |
2728 | *cp = 0; | |
2729 | } | |
2730 | ||
2731 | void | |
864dbfa3 | 2732 | Perl_cond_signal(pTHX_ perl_cond *cp) |
12ca11f6 | 2733 | { |
51dd5992 | 2734 | perl_os_thread t; |
12ca11f6 | 2735 | perl_cond cond = *cp; |
a1d180c4 | 2736 | |
12ca11f6 MB |
2737 | if (!cond) |
2738 | return; | |
2739 | t = cond->thread; | |
2740 | /* Insert t in the runnable queue just ahead of us */ | |
c7848ba1 MB |
2741 | t->i.next_run = thr->i.next_run; |
2742 | thr->i.next_run->i.prev_run = t; | |
2743 | t->i.prev_run = thr; | |
2744 | thr->i.next_run = t; | |
2745 | thr->i.wait_queue = 0; | |
12ca11f6 MB |
2746 | /* Remove from the wait queue */ |
2747 | *cp = cond->next; | |
2748 | Safefree(cond); | |
2749 | } | |
2750 | ||
2751 | void | |
864dbfa3 | 2752 | Perl_cond_broadcast(pTHX_ perl_cond *cp) |
12ca11f6 | 2753 | { |
51dd5992 | 2754 | perl_os_thread t; |
12ca11f6 | 2755 | perl_cond cond, cond_next; |
a1d180c4 | 2756 | |
12ca11f6 MB |
2757 | for (cond = *cp; cond; cond = cond_next) { |
2758 | t = cond->thread; | |
2759 | /* Insert t in the runnable queue just ahead of us */ | |
c7848ba1 MB |
2760 | t->i.next_run = thr->i.next_run; |
2761 | thr->i.next_run->i.prev_run = t; | |
2762 | t->i.prev_run = thr; | |
2763 | thr->i.next_run = t; | |
2764 | thr->i.wait_queue = 0; | |
12ca11f6 MB |
2765 | /* Remove from the wait queue */ |
2766 | cond_next = cond->next; | |
2767 | Safefree(cond); | |
2768 | } | |
2769 | *cp = 0; | |
2770 | } | |
2771 | ||
2772 | void | |
864dbfa3 | 2773 | Perl_cond_wait(pTHX_ perl_cond *cp) |
12ca11f6 MB |
2774 | { |
2775 | perl_cond cond; | |
2776 | ||
c7848ba1 | 2777 | if (thr->i.next_run == thr) |
cea2e8a9 | 2778 | Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread"); |
a1d180c4 | 2779 | |
0f15f207 | 2780 | New(666, cond, 1, struct perl_wait_queue); |
12ca11f6 MB |
2781 | cond->thread = thr; |
2782 | cond->next = *cp; | |
2783 | *cp = cond; | |
c7848ba1 | 2784 | thr->i.wait_queue = cond; |
12ca11f6 | 2785 | /* Remove ourselves from runnable queue */ |
c7848ba1 MB |
2786 | thr->i.next_run->i.prev_run = thr->i.prev_run; |
2787 | thr->i.prev_run->i.next_run = thr->i.next_run; | |
12ca11f6 MB |
2788 | } |
2789 | #endif /* FAKE_THREADS */ | |
2790 | ||
f93b4edd | 2791 | MAGIC * |
864dbfa3 | 2792 | Perl_condpair_magic(pTHX_ SV *sv) |
f93b4edd MB |
2793 | { |
2794 | MAGIC *mg; | |
a1d180c4 | 2795 | |
3e209e71 | 2796 | (void)SvUPGRADE(sv, SVt_PVMG); |
14befaf4 | 2797 | mg = mg_find(sv, PERL_MAGIC_mutex); |
f93b4edd MB |
2798 | if (!mg) { |
2799 | condpair_t *cp; | |
2800 | ||
2801 | New(53, cp, 1, condpair_t); | |
2802 | MUTEX_INIT(&cp->mutex); | |
2803 | COND_INIT(&cp->owner_cond); | |
2804 | COND_INIT(&cp->cond); | |
2805 | cp->owner = 0; | |
1feb2720 | 2806 | LOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
14befaf4 | 2807 | mg = mg_find(sv, PERL_MAGIC_mutex); |
f93b4edd MB |
2808 | if (mg) { |
2809 | /* someone else beat us to initialising it */ | |
1feb2720 | 2810 | UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
f93b4edd MB |
2811 | MUTEX_DESTROY(&cp->mutex); |
2812 | COND_DESTROY(&cp->owner_cond); | |
2813 | COND_DESTROY(&cp->cond); | |
2814 | Safefree(cp); | |
2815 | } | |
2816 | else { | |
14befaf4 | 2817 | sv_magic(sv, Nullsv, PERL_MAGIC_mutex, 0, 0); |
f93b4edd MB |
2818 | mg = SvMAGIC(sv); |
2819 | mg->mg_ptr = (char *)cp; | |
565764a8 | 2820 | mg->mg_len = sizeof(cp); |
1feb2720 | 2821 | UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
bf49b057 | 2822 | DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log, |
a674cc95 | 2823 | "%p: condpair_magic %p\n", thr, sv))); |
f93b4edd MB |
2824 | } |
2825 | } | |
2826 | return mg; | |
2827 | } | |
a863c7d1 | 2828 | |
3d35f11b | 2829 | SV * |
4755096e | 2830 | Perl_sv_lock(pTHX_ SV *osv) |
3d35f11b GS |
2831 | { |
2832 | MAGIC *mg; | |
2833 | SV *sv = osv; | |
2834 | ||
631cfb58 | 2835 | LOCK_SV_LOCK_MUTEX; |
3d35f11b GS |
2836 | if (SvROK(sv)) { |
2837 | sv = SvRV(sv); | |
3d35f11b GS |
2838 | } |
2839 | ||
2840 | mg = condpair_magic(sv); | |
2841 | MUTEX_LOCK(MgMUTEXP(mg)); | |
2842 | if (MgOWNER(mg) == thr) | |
2843 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
4755096e | 2844 | else { |
3d35f11b GS |
2845 | while (MgOWNER(mg)) |
2846 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
2847 | MgOWNER(mg) = thr; | |
4755096e GS |
2848 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
2849 | "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n", | |
a674cc95 | 2850 | PTR2UV(thr), PTR2UV(sv))); |
3d35f11b GS |
2851 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
2852 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); | |
2853 | } | |
631cfb58 | 2854 | UNLOCK_SV_LOCK_MUTEX; |
4755096e | 2855 | return sv; |
3d35f11b GS |
2856 | } |
2857 | ||
a863c7d1 | 2858 | /* |
199100c8 MB |
2859 | * Make a new perl thread structure using t as a prototype. Some of the |
2860 | * fields for the new thread are copied from the prototype thread, t, | |
2861 | * so t should not be running in perl at the time this function is | |
2862 | * called. The use by ext/Thread/Thread.xs in core perl (where t is the | |
2863 | * thread calling new_struct_thread) clearly satisfies this constraint. | |
a863c7d1 | 2864 | */ |
52e1cb5e | 2865 | struct perl_thread * |
864dbfa3 | 2866 | Perl_new_struct_thread(pTHX_ struct perl_thread *t) |
a863c7d1 | 2867 | { |
c5be433b | 2868 | #if !defined(PERL_IMPLICIT_CONTEXT) |
52e1cb5e | 2869 | struct perl_thread *thr; |
cea2e8a9 | 2870 | #endif |
a863c7d1 | 2871 | SV *sv; |
199100c8 MB |
2872 | SV **svp; |
2873 | I32 i; | |
2874 | ||
79cb57f6 | 2875 | sv = newSVpvn("", 0); |
52e1cb5e JH |
2876 | SvGROW(sv, sizeof(struct perl_thread) + 1); |
2877 | SvCUR_set(sv, sizeof(struct perl_thread)); | |
199100c8 | 2878 | thr = (Thread) SvPVX(sv); |
949ced2d | 2879 | #ifdef DEBUGGING |
52e1cb5e | 2880 | memset(thr, 0xab, sizeof(struct perl_thread)); |
533c011a NIS |
2881 | PL_markstack = 0; |
2882 | PL_scopestack = 0; | |
2883 | PL_savestack = 0; | |
2884 | PL_retstack = 0; | |
2885 | PL_dirty = 0; | |
2886 | PL_localizing = 0; | |
949ced2d | 2887 | Zero(&PL_hv_fetch_ent_mh, 1, HE); |
d0e9ca0c HS |
2888 | PL_efloatbuf = (char*)NULL; |
2889 | PL_efloatsize = 0; | |
949ced2d GS |
2890 | #else |
2891 | Zero(thr, 1, struct perl_thread); | |
2892 | #endif | |
199100c8 MB |
2893 | |
2894 | thr->oursv = sv; | |
cea2e8a9 | 2895 | init_stacks(); |
a863c7d1 | 2896 | |
533c011a | 2897 | PL_curcop = &PL_compiling; |
c5be433b | 2898 | thr->interp = t->interp; |
199100c8 | 2899 | thr->cvcache = newHV(); |
54b9620d | 2900 | thr->threadsv = newAV(); |
a863c7d1 | 2901 | thr->specific = newAV(); |
79cb57f6 | 2902 | thr->errsv = newSVpvn("", 0); |
a863c7d1 | 2903 | thr->flags = THRf_R_JOINABLE; |
8dcd6f7b | 2904 | thr->thr_done = 0; |
a863c7d1 | 2905 | MUTEX_INIT(&thr->mutex); |
199100c8 | 2906 | |
5c831c24 | 2907 | JMPENV_BOOTSTRAP; |
533c011a | 2908 | |
6dc8a9e4 | 2909 | PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */ |
533c011a NIS |
2910 | PL_restartop = 0; |
2911 | ||
b099ddc0 | 2912 | PL_statname = NEWSV(66,0); |
5a844595 | 2913 | PL_errors = newSVpvn("", 0); |
b099ddc0 | 2914 | PL_maxscream = -1; |
0b94c7bb GS |
2915 | PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp); |
2916 | PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags); | |
2917 | PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start); | |
2918 | PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string); | |
2919 | PL_regfree = MEMBER_TO_FPTR(Perl_pregfree); | |
b099ddc0 GS |
2920 | PL_regindent = 0; |
2921 | PL_reginterp_cnt = 0; | |
2922 | PL_lastscream = Nullsv; | |
2923 | PL_screamfirst = 0; | |
2924 | PL_screamnext = 0; | |
2925 | PL_reg_start_tmp = 0; | |
2926 | PL_reg_start_tmpl = 0; | |
14ed4b74 | 2927 | PL_reg_poscache = Nullch; |
b099ddc0 GS |
2928 | |
2929 | /* parent thread's data needs to be locked while we make copy */ | |
2930 | MUTEX_LOCK(&t->mutex); | |
2931 | ||
14dd3ad8 | 2932 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
312caa8e | 2933 | PL_protect = t->Tprotect; |
14dd3ad8 | 2934 | #endif |
312caa8e | 2935 | |
b099ddc0 GS |
2936 | PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */ |
2937 | PL_defstash = t->Tdefstash; /* XXX maybe these should */ | |
2938 | PL_curstash = t->Tcurstash; /* always be set to main? */ | |
2939 | ||
6b88bc9c | 2940 | PL_tainted = t->Ttainted; |
84fee439 NIS |
2941 | PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */ |
2942 | PL_nrs = newSVsv(t->Tnrs); | |
7d3de3d5 | 2943 | PL_rs = t->Tnrs ? SvREFCNT_inc(PL_nrs) : Nullsv; |
84fee439 | 2944 | PL_last_in_gv = Nullgv; |
7d3de3d5 | 2945 | PL_ofs_sv = t->Tofs_sv ? SvREFCNT_inc(PL_ofs_sv) : Nullsv; |
84fee439 NIS |
2946 | PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv); |
2947 | PL_chopset = t->Tchopset; | |
84fee439 NIS |
2948 | PL_bodytarget = newSVsv(t->Tbodytarget); |
2949 | PL_toptarget = newSVsv(t->Ttoptarget); | |
5c831c24 GS |
2950 | if (t->Tformtarget == t->Ttoptarget) |
2951 | PL_formtarget = PL_toptarget; | |
2952 | else | |
2953 | PL_formtarget = PL_bodytarget; | |
533c011a | 2954 | |
54b9620d MB |
2955 | /* Initialise all per-thread SVs that the template thread used */ |
2956 | svp = AvARRAY(t->threadsv); | |
93965878 | 2957 | for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) { |
533c011a | 2958 | if (*svp && *svp != &PL_sv_undef) { |
199100c8 | 2959 | SV *sv = newSVsv(*svp); |
54b9620d | 2960 | av_store(thr->threadsv, i, sv); |
14befaf4 | 2961 | sv_magic(sv, 0, PERL_MAGIC_sv, &PL_threadsv_names[i], 1); |
bf49b057 | 2962 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
f1dbda3d JH |
2963 | "new_struct_thread: copied threadsv %"IVdf" %p->%p\n", |
2964 | (IV)i, t, thr)); | |
199100c8 | 2965 | } |
a1d180c4 | 2966 | } |
940cb80d | 2967 | thr->threadsvp = AvARRAY(thr->threadsv); |
199100c8 | 2968 | |
533c011a NIS |
2969 | MUTEX_LOCK(&PL_threads_mutex); |
2970 | PL_nthreads++; | |
2971 | thr->tid = ++PL_threadnum; | |
199100c8 MB |
2972 | thr->next = t->next; |
2973 | thr->prev = t; | |
2974 | t->next = thr; | |
2975 | thr->next->prev = thr; | |
533c011a | 2976 | MUTEX_UNLOCK(&PL_threads_mutex); |
a863c7d1 | 2977 | |
b099ddc0 GS |
2978 | /* done copying parent's state */ |
2979 | MUTEX_UNLOCK(&t->mutex); | |
2980 | ||
a863c7d1 | 2981 | #ifdef HAVE_THREAD_INTERN |
4f63d024 | 2982 | Perl_init_thread_intern(thr); |
a863c7d1 | 2983 | #endif /* HAVE_THREAD_INTERN */ |
a863c7d1 MB |
2984 | return thr; |
2985 | } | |
11343788 | 2986 | #endif /* USE_THREADS */ |
760ac839 | 2987 | |
22239a37 NIS |
2988 | #ifdef PERL_GLOBAL_STRUCT |
2989 | struct perl_vars * | |
864dbfa3 | 2990 | Perl_GetVars(pTHX) |
22239a37 | 2991 | { |
533c011a | 2992 | return &PL_Vars; |
22239a37 | 2993 | } |
31fb1209 NIS |
2994 | #endif |
2995 | ||
2996 | char ** | |
864dbfa3 | 2997 | Perl_get_op_names(pTHX) |
31fb1209 | 2998 | { |
22c35a8c | 2999 | return PL_op_name; |
31fb1209 NIS |
3000 | } |
3001 | ||
3002 | char ** | |
864dbfa3 | 3003 | Perl_get_op_descs(pTHX) |
31fb1209 | 3004 | { |
22c35a8c | 3005 | return PL_op_desc; |
31fb1209 | 3006 | } |
9e6b2b00 GS |
3007 | |
3008 | char * | |
864dbfa3 | 3009 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 3010 | { |
22c35a8c | 3011 | return (char*)PL_no_modify; |
9e6b2b00 GS |
3012 | } |
3013 | ||
3014 | U32 * | |
864dbfa3 | 3015 | Perl_get_opargs(pTHX) |
9e6b2b00 | 3016 | { |
22c35a8c | 3017 | return PL_opargs; |
9e6b2b00 | 3018 | } |
51aa15f3 | 3019 | |
0cb96387 GS |
3020 | PPADDR_t* |
3021 | Perl_get_ppaddr(pTHX) | |
3022 | { | |
12ae5dfc | 3023 | return (PPADDR_t*)PL_ppaddr; |
0cb96387 GS |
3024 | } |
3025 | ||
a6c40364 GS |
3026 | #ifndef HAS_GETENV_LEN |
3027 | char * | |
bf4acbe4 | 3028 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 GS |
3029 | { |
3030 | char *env_trans = PerlEnv_getenv(env_elem); | |
3031 | if (env_trans) | |
3032 | *len = strlen(env_trans); | |
3033 | return env_trans; | |
f675dbe5 CB |
3034 | } |
3035 | #endif | |
3036 | ||
dc9e4912 GS |
3037 | |
3038 | MGVTBL* | |
864dbfa3 | 3039 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 GS |
3040 | { |
3041 | MGVTBL* result = Null(MGVTBL*); | |
3042 | ||
3043 | switch(vtbl_id) { | |
3044 | case want_vtbl_sv: | |
3045 | result = &PL_vtbl_sv; | |
3046 | break; | |
3047 | case want_vtbl_env: | |
3048 | result = &PL_vtbl_env; | |
3049 | break; | |
3050 | case want_vtbl_envelem: | |
3051 | result = &PL_vtbl_envelem; | |
3052 | break; | |
3053 | case want_vtbl_sig: | |
3054 | result = &PL_vtbl_sig; | |
3055 | break; | |
3056 | case want_vtbl_sigelem: | |
3057 | result = &PL_vtbl_sigelem; | |
3058 | break; | |
3059 | case want_vtbl_pack: | |
3060 | result = &PL_vtbl_pack; | |
3061 | break; | |
3062 | case want_vtbl_packelem: | |
3063 | result = &PL_vtbl_packelem; | |
3064 | break; | |
3065 | case want_vtbl_dbline: | |
3066 | result = &PL_vtbl_dbline; | |
3067 | break; | |
3068 | case want_vtbl_isa: | |
3069 | result = &PL_vtbl_isa; | |
3070 | break; | |
3071 | case want_vtbl_isaelem: | |
3072 | result = &PL_vtbl_isaelem; | |
3073 | break; | |
3074 | case want_vtbl_arylen: | |
3075 | result = &PL_vtbl_arylen; | |
3076 | break; | |
3077 | case want_vtbl_glob: | |
3078 | result = &PL_vtbl_glob; | |
3079 | break; | |
3080 | case want_vtbl_mglob: | |
3081 | result = &PL_vtbl_mglob; | |
3082 | break; | |
3083 | case want_vtbl_nkeys: | |
3084 | result = &PL_vtbl_nkeys; | |
3085 | break; | |
3086 | case want_vtbl_taint: | |
3087 | result = &PL_vtbl_taint; | |
3088 | break; | |
3089 | case want_vtbl_substr: | |
3090 | result = &PL_vtbl_substr; | |
3091 | break; | |
3092 | case want_vtbl_vec: | |
3093 | result = &PL_vtbl_vec; | |
3094 | break; | |
3095 | case want_vtbl_pos: | |
3096 | result = &PL_vtbl_pos; | |
3097 | break; | |
3098 | case want_vtbl_bm: | |
3099 | result = &PL_vtbl_bm; | |
3100 | break; | |
3101 | case want_vtbl_fm: | |
3102 | result = &PL_vtbl_fm; | |
3103 | break; | |
3104 | case want_vtbl_uvar: | |
3105 | result = &PL_vtbl_uvar; | |
3106 | break; | |
3107 | #ifdef USE_THREADS | |
3108 | case want_vtbl_mutex: | |
3109 | result = &PL_vtbl_mutex; | |
3110 | break; | |
3111 | #endif | |
3112 | case want_vtbl_defelem: | |
3113 | result = &PL_vtbl_defelem; | |
3114 | break; | |
3115 | case want_vtbl_regexp: | |
3116 | result = &PL_vtbl_regexp; | |
3117 | break; | |
3118 | case want_vtbl_regdata: | |
3119 | result = &PL_vtbl_regdata; | |
3120 | break; | |
3121 | case want_vtbl_regdatum: | |
3122 | result = &PL_vtbl_regdatum; | |
3123 | break; | |
3c90161d | 3124 | #ifdef USE_LOCALE_COLLATE |
dc9e4912 GS |
3125 | case want_vtbl_collxfrm: |
3126 | result = &PL_vtbl_collxfrm; | |
3127 | break; | |
3c90161d | 3128 | #endif |
dc9e4912 GS |
3129 | case want_vtbl_amagic: |
3130 | result = &PL_vtbl_amagic; | |
3131 | break; | |
3132 | case want_vtbl_amagicelem: | |
3133 | result = &PL_vtbl_amagicelem; | |
3134 | break; | |
810b8aa5 GS |
3135 | case want_vtbl_backref: |
3136 | result = &PL_vtbl_backref; | |
3137 | break; | |
dc9e4912 GS |
3138 | } |
3139 | return result; | |
3140 | } | |
3141 | ||
767df6a1 | 3142 | I32 |
864dbfa3 | 3143 | Perl_my_fflush_all(pTHX) |
767df6a1 | 3144 | { |
8fbdfb7c | 3145 | #if defined(FFLUSH_NULL) |
ce720889 | 3146 | return PerlIO_flush(NULL); |
767df6a1 | 3147 | #else |
8fbdfb7c | 3148 | # if defined(HAS__FWALK) |
74cac757 JH |
3149 | /* undocumented, unprototyped, but very useful BSDism */ |
3150 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3151 | _fwalk(&fflush); |
74cac757 | 3152 | return 0; |
8fa7f367 | 3153 | # else |
8fbdfb7c | 3154 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3155 | long open_max = -1; |
8fbdfb7c | 3156 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3157 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8fbdfb7c | 3158 | # else |
8fa7f367 | 3159 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3160 | open_max = sysconf(_SC_OPEN_MAX); |
8fa7f367 JH |
3161 | # else |
3162 | # ifdef FOPEN_MAX | |
74cac757 | 3163 | open_max = FOPEN_MAX; |
8fa7f367 JH |
3164 | # else |
3165 | # ifdef OPEN_MAX | |
74cac757 | 3166 | open_max = OPEN_MAX; |
8fa7f367 JH |
3167 | # else |
3168 | # ifdef _NFILE | |
d2201af2 | 3169 | open_max = _NFILE; |
8fa7f367 JH |
3170 | # endif |
3171 | # endif | |
74cac757 | 3172 | # endif |
767df6a1 JH |
3173 | # endif |
3174 | # endif | |
767df6a1 JH |
3175 | if (open_max > 0) { |
3176 | long i; | |
3177 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3178 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3179 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3180 | STDIO_STREAM_ARRAY[i]._flag) | |
3181 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3182 | return 0; |
3183 | } | |
8fbdfb7c | 3184 | # endif |
767df6a1 JH |
3185 | SETERRNO(EBADF,RMS$_IFI); |
3186 | return EOF; | |
74cac757 | 3187 | # endif |
767df6a1 JH |
3188 | #endif |
3189 | } | |
097ee67d | 3190 | |
69282e91 | 3191 | void |
bc37a18f RG |
3192 | Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op) |
3193 | { | |
9c0fcd4f | 3194 | char *vile; |
4e34385f | 3195 | I32 warn_type; |
bc37a18f | 3196 | char *func = |
66fc2fa5 JH |
3197 | op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
3198 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ | |
bc37a18f RG |
3199 | PL_op_desc[op]; |
3200 | char *pars = OP_IS_FILETEST(op) ? "" : "()"; | |
21865922 JH |
3201 | char *type = OP_IS_SOCKET(op) || |
3202 | (gv && io && IoTYPE(io) == IoTYPE_SOCKET) ? | |
2dd78f96 | 3203 | "socket" : "filehandle"; |
9c0fcd4f | 3204 | char *name = NULL; |
bc37a18f | 3205 | |
21865922 | 3206 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { |
9c0fcd4f | 3207 | vile = "closed"; |
4e34385f | 3208 | warn_type = WARN_CLOSED; |
2dd78f96 JH |
3209 | } |
3210 | else { | |
9c0fcd4f | 3211 | vile = "unopened"; |
4e34385f | 3212 | warn_type = WARN_UNOPENED; |
9c0fcd4f | 3213 | } |
bc37a18f | 3214 | |
66fc2fa5 JH |
3215 | if (gv && isGV(gv)) { |
3216 | SV *sv = sv_newmortal(); | |
3217 | gv_efullname4(sv, gv, Nullch, FALSE); | |
3218 | name = SvPVX(sv); | |
3219 | } | |
3220 | ||
4c80c0b2 NC |
3221 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
3222 | if (name && *name) | |
3223 | Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for %sput", | |
7889fe52 | 3224 | name, |
4c80c0b2 NC |
3225 | (op == OP_phoney_INPUT_ONLY ? "in" : "out")); |
3226 | else | |
3227 | Perl_warner(aTHX_ WARN_IO, "Filehandle opened only for %sput", | |
3228 | (op == OP_phoney_INPUT_ONLY ? "in" : "out")); | |
3229 | } else if (name && *name) { | |
4e34385f | 3230 | Perl_warner(aTHX_ warn_type, |
9c0fcd4f | 3231 | "%s%s on %s %s %s", func, pars, vile, type, name); |
3e11456d | 3232 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) |
4e34385f | 3233 | Perl_warner(aTHX_ warn_type, |
bc37a18f RG |
3234 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", |
3235 | func, pars, name); | |
2dd78f96 JH |
3236 | } |
3237 | else { | |
4e34385f | 3238 | Perl_warner(aTHX_ warn_type, |
9c0fcd4f | 3239 | "%s%s on %s %s", func, pars, vile, type); |
21865922 | 3240 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) |
4e34385f | 3241 | Perl_warner(aTHX_ warn_type, |
bc37a18f RG |
3242 | "\t(Are you trying to call %s%s on dirhandle?)\n", |
3243 | func, pars); | |
3244 | } | |
69282e91 | 3245 | } |
a926ef6b JH |
3246 | |
3247 | #ifdef EBCDIC | |
cbebf344 JH |
3248 | /* in ASCII order, not that it matters */ |
3249 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
3250 | ||
a926ef6b JH |
3251 | int |
3252 | Perl_ebcdic_control(pTHX_ int ch) | |
3253 | { | |
3254 | if (ch > 'a') { | |
3255 | char *ctlp; | |
4a7d1889 | 3256 | |
a926ef6b JH |
3257 | if (islower(ch)) |
3258 | ch = toupper(ch); | |
4a7d1889 | 3259 | |
a926ef6b JH |
3260 | if ((ctlp = strchr(controllablechars, ch)) == 0) { |
3261 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); | |
3262 | } | |
4a7d1889 | 3263 | |
a926ef6b JH |
3264 | if (ctlp == controllablechars) |
3265 | return('\177'); /* DEL */ | |
3266 | else | |
3267 | return((unsigned char)(ctlp - controllablechars - 1)); | |
3268 | } else { /* Want uncontrol */ | |
3269 | if (ch == '\177' || ch == -1) | |
3270 | return('?'); | |
3271 | else if (ch == '\157') | |
3272 | return('\177'); | |
3273 | else if (ch == '\174') | |
3274 | return('\000'); | |
3275 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
3276 | return('\036'); | |
3277 | else if (ch == '\155') | |
3278 | return('\037'); | |
3279 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) | |
3280 | return(controllablechars[ch+1]); | |
3281 | else | |
3282 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); | |
3283 | } | |
3284 | } | |
3285 | #endif | |
e72cf795 | 3286 | |
e72cf795 JH |
3287 | /* XXX struct tm on some systems (SunOS4/BSD) contains extra (non POSIX) |
3288 | * fields for which we don't have Configure support yet: | |
3289 | * char *tm_zone; -- abbreviation of timezone name | |
3290 | * long tm_gmtoff; -- offset from GMT in seconds | |
3291 | * To workaround core dumps from the uninitialised tm_zone we get the | |
3292 | * system to give us a reasonable struct to copy. This fix means that | |
3293 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3294 | * localtime(time()). That should give the desired result most of the | |
3295 | * time. But probably not always! | |
3296 | * | |
3297 | * This is a temporary workaround to be removed once Configure | |
3298 | * support is added and NETaa14816 is considered in full. | |
3299 | * It does not address tzname aspects of NETaa14816. | |
3300 | */ | |
3301 | #ifdef HAS_GNULIBC | |
3302 | # ifndef STRUCT_TM_HASZONE | |
3303 | # define STRUCT_TM_HASZONE | |
3304 | # endif | |
3305 | #endif | |
3306 | ||
3307 | void | |
f1208910 | 3308 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 JH |
3309 | { |
3310 | #ifdef STRUCT_TM_HASZONE | |
3311 | Time_t now; | |
3312 | (void)time(&now); | |
3313 | Copy(localtime(&now), ptm, 1, struct tm); | |
3314 | #endif | |
3315 | } | |
3316 | ||
3317 | /* | |
3318 | * mini_mktime - normalise struct tm values without the localtime() | |
3319 | * semantics (and overhead) of mktime(). | |
3320 | */ | |
3321 | void | |
f1208910 | 3322 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
e72cf795 JH |
3323 | { |
3324 | int yearday; | |
3325 | int secs; | |
3326 | int month, mday, year, jday; | |
3327 | int odd_cent, odd_year; | |
3328 | ||
3329 | #define DAYS_PER_YEAR 365 | |
3330 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3331 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3332 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3333 | #define SECS_PER_HOUR (60*60) | |
3334 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3335 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3336 | #define MONTH_TO_DAYS 153/5 | |
3337 | #define DAYS_TO_MONTH 5/153 | |
3338 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3339 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3340 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3341 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3342 | ||
3343 | /* | |
3344 | * Year/day algorithm notes: | |
3345 | * | |
3346 | * With a suitable offset for numeric value of the month, one can find | |
3347 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3348 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3349 | * messing about with leap days, we consider January and February to be | |
3350 | * the 13th and 14th month of the previous year. After that transformation, | |
3351 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3352 | * so the month index values we use run from 4 through 15. | |
3353 | * | |
3354 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3355 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3356 | * by 400 instead), we can simply calculate the number of days since some | |
3357 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3358 | * the days we derive from our month index, and adding in the day of the | |
3359 | * month. The value used here is not adjusted for the actual origin which | |
3360 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3361 | * We're only building the value so we can turn around and get the | |
3362 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3363 | * | |
3364 | * For going backward, we need to bias the value we're using so that we find | |
3365 | * the right year value. (Basically, we don't want the contribution of | |
3366 | * March 1st to the number to apply while deriving the year). Having done | |
3367 | * that, we 'count up' the contribution to the year number by accounting for | |
3368 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3369 | * the contribution from full centuries (to avoid counting in the lost leap | |
3370 | * days), plus the contribution from full quad-years (to count in the normal | |
3371 | * leap days), plus the leftover contribution from any non-leap years. | |
3372 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3373 | * days left over. This is also true for March 1st, however. So, we have | |
3374 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3375 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3376 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3377 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3378 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3379 | * and the remainder is the day-of-month. We then have to convert back to | |
3380 | * 'real' months (including fixing January and February from being 14/15 in | |
3381 | * the previous year to being in the proper year). After that, to get | |
3382 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3383 | * January 1st, which we subtract from the yearday value we had earlier, | |
3384 | * representing the date we've re-built. This is done from January 1 | |
3385 | * because tm_yday is 0-origin. | |
3386 | * | |
3387 | * Since POSIX time routines are only guaranteed to work for times since the | |
3388 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3389 | * applies Gregorian calendar rules even to dates before the 16th century | |
3390 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3391 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3392 | * outside the scope for this routine. Since we convert back based on the | |
3393 | * same rules we used to build the yearday, you'll only get strange results | |
3394 | * for input which needed normalising, or for the 'odd' century years which | |
3395 | * were leap years in the Julian calander but not in the Gregorian one. | |
3396 | * I can live with that. | |
3397 | * | |
3398 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3399 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3400 | * care. | |
3401 | */ | |
3402 | ||
3403 | year = 1900 + ptm->tm_year; | |
3404 | month = ptm->tm_mon; | |
3405 | mday = ptm->tm_mday; | |
3406 | /* allow given yday with no month & mday to dominate the result */ | |
3407 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { | |
3408 | month = 0; | |
3409 | mday = 0; | |
3410 | jday = 1 + ptm->tm_yday; | |
3411 | } | |
3412 | else { | |
3413 | jday = 0; | |
3414 | } | |
3415 | if (month >= 2) | |
3416 | month+=2; | |
3417 | else | |
3418 | month+=14, year--; | |
3419 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3420 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3421 | /* | |
3422 | * Note that we don't know when leap-seconds were or will be, | |
3423 | * so we have to trust the user if we get something which looks | |
3424 | * like a sensible leap-second. Wild values for seconds will | |
3425 | * be rationalised, however. | |
3426 | */ | |
3427 | if ((unsigned) ptm->tm_sec <= 60) { | |
3428 | secs = 0; | |
3429 | } | |
3430 | else { | |
3431 | secs = ptm->tm_sec; | |
3432 | ptm->tm_sec = 0; | |
3433 | } | |
3434 | secs += 60 * ptm->tm_min; | |
3435 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3436 | if (secs < 0) { | |
3437 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3438 | /* got negative remainder, but need positive time */ | |
3439 | /* back off an extra day to compensate */ | |
3440 | yearday += (secs/SECS_PER_DAY)-1; | |
3441 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3442 | } | |
3443 | else { | |
3444 | yearday += (secs/SECS_PER_DAY); | |
3445 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3446 | } | |
3447 | } | |
3448 | else if (secs >= SECS_PER_DAY) { | |
3449 | yearday += (secs/SECS_PER_DAY); | |
3450 | secs %= SECS_PER_DAY; | |
3451 | } | |
3452 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3453 | secs %= SECS_PER_HOUR; | |
3454 | ptm->tm_min = secs/60; | |
3455 | secs %= 60; | |
3456 | ptm->tm_sec += secs; | |
3457 | /* done with time of day effects */ | |
3458 | /* | |
3459 | * The algorithm for yearday has (so far) left it high by 428. | |
3460 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3461 | * bias it by 123 while trying to figure out what year it | |
3462 | * really represents. Even with this tweak, the reverse | |
3463 | * translation fails for years before A.D. 0001. | |
3464 | * It would still fail for Feb 29, but we catch that one below. | |
3465 | */ | |
3466 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3467 | yearday -= YEAR_ADJUST; | |
3468 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3469 | yearday %= DAYS_PER_QCENT; | |
3470 | odd_cent = yearday / DAYS_PER_CENT; | |
3471 | year += odd_cent * 100; | |
3472 | yearday %= DAYS_PER_CENT; | |
3473 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3474 | yearday %= DAYS_PER_QYEAR; | |
3475 | odd_year = yearday / DAYS_PER_YEAR; | |
3476 | year += odd_year; | |
3477 | yearday %= DAYS_PER_YEAR; | |
3478 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3479 | month = 1; | |
3480 | yearday = 29; | |
3481 | } | |
3482 | else { | |
3483 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3484 | month = yearday*DAYS_TO_MONTH; | |
3485 | yearday -= month*MONTH_TO_DAYS; | |
3486 | /* recover other leap-year adjustment */ | |
3487 | if (month > 13) { | |
3488 | month-=14; | |
3489 | year++; | |
3490 | } | |
3491 | else { | |
3492 | month-=2; | |
3493 | } | |
3494 | } | |
3495 | ptm->tm_year = year - 1900; | |
3496 | if (yearday) { | |
3497 | ptm->tm_mday = yearday; | |
3498 | ptm->tm_mon = month; | |
3499 | } | |
3500 | else { | |
3501 | ptm->tm_mday = 31; | |
3502 | ptm->tm_mon = month - 1; | |
3503 | } | |
3504 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3505 | year--; | |
3506 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3507 | yearday += 14*MONTH_TO_DAYS + 1; | |
3508 | ptm->tm_yday = jday - yearday; | |
3509 | /* fix tm_wday if not overridden by caller */ | |
3510 | if ((unsigned)ptm->tm_wday > 6) | |
3511 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; | |
3512 | } | |
b3c85772 JH |
3513 | |
3514 | char * | |
f1208910 | 3515 | Perl_my_strftime(pTHX_ char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3516 | { |
3517 | #ifdef HAS_STRFTIME | |
3518 | char *buf; | |
3519 | int buflen; | |
3520 | struct tm mytm; | |
3521 | int len; | |
3522 | ||
3523 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ | |
3524 | mytm.tm_sec = sec; | |
3525 | mytm.tm_min = min; | |
3526 | mytm.tm_hour = hour; | |
3527 | mytm.tm_mday = mday; | |
3528 | mytm.tm_mon = mon; | |
3529 | mytm.tm_year = year; | |
3530 | mytm.tm_wday = wday; | |
3531 | mytm.tm_yday = yday; | |
3532 | mytm.tm_isdst = isdst; | |
3533 | mini_mktime(&mytm); | |
3534 | buflen = 64; | |
3535 | New(0, buf, buflen, char); | |
3536 | len = strftime(buf, buflen, fmt, &mytm); | |
3537 | /* | |
877f6a72 | 3538 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3539 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3540 | ** and try repeatedly. The reason why it is so complicated | |
3541 | ** is that getting a return value of 0 from strftime can indicate | |
3542 | ** one of the following: | |
3543 | ** 1. buffer overflowed, | |
3544 | ** 2. illegal conversion specifier, or | |
3545 | ** 3. the format string specifies nothing to be returned(not | |
3546 | ** an error). This could be because format is an empty string | |
3547 | ** or it specifies %p that yields an empty string in some locale. | |
3548 | ** If there is a better way to make it portable, go ahead by | |
3549 | ** all means. | |
3550 | */ | |
3551 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3552 | return buf; | |
3553 | else { | |
3554 | /* Possibly buf overflowed - try again with a bigger buf */ | |
3555 | int fmtlen = strlen(fmt); | |
3556 | int bufsize = fmtlen + buflen; | |
877f6a72 | 3557 | |
b3c85772 JH |
3558 | New(0, buf, bufsize, char); |
3559 | while (buf) { | |
3560 | buflen = strftime(buf, bufsize, fmt, &mytm); | |
3561 | if (buflen > 0 && buflen < bufsize) | |
3562 | break; | |
3563 | /* heuristic to prevent out-of-memory errors */ | |
3564 | if (bufsize > 100*fmtlen) { | |
3565 | Safefree(buf); | |
3566 | buf = NULL; | |
3567 | break; | |
3568 | } | |
3569 | bufsize *= 2; | |
3570 | Renew(buf, bufsize, char); | |
3571 | } | |
3572 | return buf; | |
3573 | } | |
3574 | #else | |
3575 | Perl_croak(aTHX_ "panic: no strftime"); | |
3576 | #endif | |
3577 | } | |
3578 | ||
877f6a72 NIS |
3579 | |
3580 | #define SV_CWD_RETURN_UNDEF \ | |
3581 | sv_setsv(sv, &PL_sv_undef); \ | |
3582 | return FALSE | |
3583 | ||
3584 | #define SV_CWD_ISDOT(dp) \ | |
3585 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3586 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) | |
3587 | ||
3588 | /* | |
89423764 | 3589 | =for apidoc getcwd_sv |
877f6a72 NIS |
3590 | |
3591 | Fill the sv with current working directory | |
3592 | ||
3593 | =cut | |
3594 | */ | |
3595 | ||
3596 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
3597 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
3598 | * getcwd(3) if available | |
3599 | * Comments from the orignal: | |
3600 | * This is a faster version of getcwd. It's also more dangerous | |
3601 | * because you might chdir out of a directory that you can't chdir | |
3602 | * back into. */ | |
3603 | ||
877f6a72 | 3604 | int |
89423764 | 3605 | Perl_getcwd_sv(pTHX_ register SV *sv) |
877f6a72 NIS |
3606 | { |
3607 | #ifndef PERL_MICRO | |
3608 | ||
8f95b30d JH |
3609 | #ifdef HAS_GETCWD |
3610 | { | |
60e110a8 DM |
3611 | char buf[MAXPATHLEN]; |
3612 | ||
3613 | /* Some getcwd()s automatically allocate a buffer of the given | |
3614 | * size from the heap if they are given a NULL buffer pointer. | |
3615 | * The problem is that this behaviour is not portable. */ | |
3616 | if (getcwd(buf, sizeof(buf) - 1)) { | |
3617 | STRLEN len = strlen(buf); | |
3618 | sv_setpvn(sv, buf, len); | |
3619 | return TRUE; | |
3620 | } | |
3621 | else { | |
3622 | sv_setsv(sv, &PL_sv_undef); | |
3623 | return FALSE; | |
3624 | } | |
8f95b30d JH |
3625 | } |
3626 | ||
3627 | #else | |
3628 | ||
877f6a72 NIS |
3629 | struct stat statbuf; |
3630 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; | |
3631 | int namelen, pathlen=0; | |
3632 | DIR *dir; | |
3633 | Direntry_t *dp; | |
877f6a72 NIS |
3634 | |
3635 | (void)SvUPGRADE(sv, SVt_PV); | |
3636 | ||
877f6a72 | 3637 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
a87ab2eb | 3638 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3639 | } |
3640 | ||
3641 | orig_cdev = statbuf.st_dev; | |
3642 | orig_cino = statbuf.st_ino; | |
3643 | cdev = orig_cdev; | |
3644 | cino = orig_cino; | |
3645 | ||
3646 | for (;;) { | |
3647 | odev = cdev; | |
3648 | oino = cino; | |
3649 | ||
3650 | if (PerlDir_chdir("..") < 0) { | |
3651 | SV_CWD_RETURN_UNDEF; | |
3652 | } | |
3653 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3654 | SV_CWD_RETURN_UNDEF; | |
3655 | } | |
3656 | ||
3657 | cdev = statbuf.st_dev; | |
3658 | cino = statbuf.st_ino; | |
3659 | ||
3660 | if (odev == cdev && oino == cino) { | |
3661 | break; | |
3662 | } | |
3663 | if (!(dir = PerlDir_open("."))) { | |
3664 | SV_CWD_RETURN_UNDEF; | |
3665 | } | |
3666 | ||
3667 | while ((dp = PerlDir_read(dir)) != NULL) { | |
3668 | #ifdef DIRNAMLEN | |
3669 | namelen = dp->d_namlen; | |
3670 | #else | |
3671 | namelen = strlen(dp->d_name); | |
3672 | #endif | |
3673 | /* skip . and .. */ | |
a87ab2eb | 3674 | if (SV_CWD_ISDOT(dp)) { |
877f6a72 NIS |
3675 | continue; |
3676 | } | |
3677 | ||
3678 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
3679 | SV_CWD_RETURN_UNDEF; | |
3680 | } | |
3681 | ||
3682 | tdev = statbuf.st_dev; | |
3683 | tino = statbuf.st_ino; | |
3684 | if (tino == oino && tdev == odev) { | |
3685 | break; | |
3686 | } | |
3687 | } | |
3688 | ||
3689 | if (!dp) { | |
3690 | SV_CWD_RETURN_UNDEF; | |
3691 | } | |
3692 | ||
cb5953d6 JH |
3693 | if (pathlen + namelen + 1 >= MAXPATHLEN) { |
3694 | SV_CWD_RETURN_UNDEF; | |
3695 | } | |
3696 | ||
877f6a72 NIS |
3697 | SvGROW(sv, pathlen + namelen + 1); |
3698 | ||
3699 | if (pathlen) { | |
3700 | /* shift down */ | |
3701 | Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char); | |
3702 | } | |
3703 | ||
3704 | /* prepend current directory to the front */ | |
3705 | *SvPVX(sv) = '/'; | |
3706 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
3707 | pathlen += (namelen + 1); | |
3708 | ||
3709 | #ifdef VOID_CLOSEDIR | |
3710 | PerlDir_close(dir); | |
3711 | #else | |
3712 | if (PerlDir_close(dir) < 0) { | |
3713 | SV_CWD_RETURN_UNDEF; | |
3714 | } | |
3715 | #endif | |
3716 | } | |
3717 | ||
60e110a8 DM |
3718 | if (pathlen) { |
3719 | SvCUR_set(sv, pathlen); | |
3720 | *SvEND(sv) = '\0'; | |
3721 | SvPOK_only(sv); | |
877f6a72 | 3722 | |
2a45baea | 3723 | if (PerlDir_chdir(SvPVX(sv)) < 0) { |
60e110a8 DM |
3724 | SV_CWD_RETURN_UNDEF; |
3725 | } | |
877f6a72 NIS |
3726 | } |
3727 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3728 | SV_CWD_RETURN_UNDEF; | |
3729 | } | |
3730 | ||
3731 | cdev = statbuf.st_dev; | |
3732 | cino = statbuf.st_ino; | |
3733 | ||
3734 | if (cdev != orig_cdev || cino != orig_cino) { | |
3735 | Perl_croak(aTHX_ "Unstable directory path, " | |
3736 | "current directory changed unexpectedly"); | |
3737 | } | |
3738 | #endif | |
3739 | ||
3740 | return TRUE; | |
3741 | #else | |
3742 | return FALSE; | |
3743 | #endif | |
3744 | } | |
3745 |