| 1 | /* util.c |
| 2 | * |
| 3 | * Copyright (c) 1991-2002, Larry Wall |
| 4 | * |
| 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. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * "Very useful, no doubt, that was to Saruman; yet it seems that he was |
| 12 | * not content." --Gandalf |
| 13 | */ |
| 14 | |
| 15 | #include "EXTERN.h" |
| 16 | #define PERL_IN_UTIL_C |
| 17 | #include "perl.h" |
| 18 | |
| 19 | #ifndef PERL_MICRO |
| 20 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
| 21 | #include <signal.h> |
| 22 | #endif |
| 23 | |
| 24 | #ifndef SIG_ERR |
| 25 | # define SIG_ERR ((Sighandler_t) -1) |
| 26 | #endif |
| 27 | #endif |
| 28 | |
| 29 | #ifdef I_SYS_WAIT |
| 30 | # include <sys/wait.h> |
| 31 | #endif |
| 32 | |
| 33 | #ifdef HAS_SELECT |
| 34 | # ifdef I_SYS_SELECT |
| 35 | # include <sys/select.h> |
| 36 | # endif |
| 37 | #endif |
| 38 | |
| 39 | #define FLUSH |
| 40 | |
| 41 | #ifdef LEAKTEST |
| 42 | |
| 43 | long xcount[MAXXCOUNT]; |
| 44 | long lastxcount[MAXXCOUNT]; |
| 45 | long xycount[MAXXCOUNT][MAXYCOUNT]; |
| 46 | long lastxycount[MAXXCOUNT][MAXYCOUNT]; |
| 47 | |
| 48 | #endif |
| 49 | |
| 50 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
| 51 | # define FD_CLOEXEC 1 /* NeXT needs this */ |
| 52 | #endif |
| 53 | |
| 54 | /* NOTE: Do not call the next three routines directly. Use the macros |
| 55 | * in handy.h, so that we can easily redefine everything to do tracking of |
| 56 | * allocated hunks back to the original New to track down any memory leaks. |
| 57 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
| 58 | */ |
| 59 | |
| 60 | /* paranoid version of system's malloc() */ |
| 61 | |
| 62 | Malloc_t |
| 63 | Perl_safesysmalloc(MEM_SIZE size) |
| 64 | { |
| 65 | dTHX; |
| 66 | Malloc_t ptr; |
| 67 | #ifdef HAS_64K_LIMIT |
| 68 | if (size > 0xffff) { |
| 69 | PerlIO_printf(Perl_error_log, |
| 70 | "Allocation too large: %lx\n", size) FLUSH; |
| 71 | my_exit(1); |
| 72 | } |
| 73 | #endif /* HAS_64K_LIMIT */ |
| 74 | #ifdef DEBUGGING |
| 75 | if ((long)size < 0) |
| 76 | Perl_croak_nocontext("panic: malloc"); |
| 77 | #endif |
| 78 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
| 79 | PERL_ALLOC_CHECK(ptr); |
| 80 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
| 81 | if (ptr != Nullch) |
| 82 | return ptr; |
| 83 | else if (PL_nomemok) |
| 84 | return Nullch; |
| 85 | else { |
| 86 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
| 87 | my_exit(1); |
| 88 | return Nullch; |
| 89 | } |
| 90 | /*NOTREACHED*/ |
| 91 | } |
| 92 | |
| 93 | /* paranoid version of system's realloc() */ |
| 94 | |
| 95 | Malloc_t |
| 96 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
| 97 | { |
| 98 | dTHX; |
| 99 | Malloc_t ptr; |
| 100 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
| 101 | Malloc_t PerlMem_realloc(); |
| 102 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
| 103 | |
| 104 | #ifdef HAS_64K_LIMIT |
| 105 | if (size > 0xffff) { |
| 106 | PerlIO_printf(Perl_error_log, |
| 107 | "Reallocation too large: %lx\n", size) FLUSH; |
| 108 | my_exit(1); |
| 109 | } |
| 110 | #endif /* HAS_64K_LIMIT */ |
| 111 | if (!size) { |
| 112 | safesysfree(where); |
| 113 | return NULL; |
| 114 | } |
| 115 | |
| 116 | if (!where) |
| 117 | return safesysmalloc(size); |
| 118 | #ifdef DEBUGGING |
| 119 | if ((long)size < 0) |
| 120 | Perl_croak_nocontext("panic: realloc"); |
| 121 | #endif |
| 122 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
| 123 | PERL_ALLOC_CHECK(ptr); |
| 124 | |
| 125 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
| 126 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
| 127 | |
| 128 | if (ptr != Nullch) |
| 129 | return ptr; |
| 130 | else if (PL_nomemok) |
| 131 | return Nullch; |
| 132 | else { |
| 133 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
| 134 | my_exit(1); |
| 135 | return Nullch; |
| 136 | } |
| 137 | /*NOTREACHED*/ |
| 138 | } |
| 139 | |
| 140 | /* safe version of system's free() */ |
| 141 | |
| 142 | Free_t |
| 143 | Perl_safesysfree(Malloc_t where) |
| 144 | { |
| 145 | #ifdef PERL_IMPLICIT_SYS |
| 146 | dTHX; |
| 147 | #endif |
| 148 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
| 149 | if (where) { |
| 150 | /*SUPPRESS 701*/ |
| 151 | PerlMem_free(where); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | /* safe version of system's calloc() */ |
| 156 | |
| 157 | Malloc_t |
| 158 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
| 159 | { |
| 160 | dTHX; |
| 161 | Malloc_t ptr; |
| 162 | |
| 163 | #ifdef HAS_64K_LIMIT |
| 164 | if (size * count > 0xffff) { |
| 165 | PerlIO_printf(Perl_error_log, |
| 166 | "Allocation too large: %lx\n", size * count) FLUSH; |
| 167 | my_exit(1); |
| 168 | } |
| 169 | #endif /* HAS_64K_LIMIT */ |
| 170 | #ifdef DEBUGGING |
| 171 | if ((long)size < 0 || (long)count < 0) |
| 172 | Perl_croak_nocontext("panic: calloc"); |
| 173 | #endif |
| 174 | size *= count; |
| 175 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
| 176 | PERL_ALLOC_CHECK(ptr); |
| 177 | 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)); |
| 178 | if (ptr != Nullch) { |
| 179 | memset((void*)ptr, 0, size); |
| 180 | return ptr; |
| 181 | } |
| 182 | else if (PL_nomemok) |
| 183 | return Nullch; |
| 184 | else { |
| 185 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
| 186 | my_exit(1); |
| 187 | return Nullch; |
| 188 | } |
| 189 | /*NOTREACHED*/ |
| 190 | } |
| 191 | |
| 192 | #ifdef LEAKTEST |
| 193 | |
| 194 | struct mem_test_strut { |
| 195 | union { |
| 196 | long type; |
| 197 | char c[2]; |
| 198 | } u; |
| 199 | long size; |
| 200 | }; |
| 201 | |
| 202 | # define ALIGN sizeof(struct mem_test_strut) |
| 203 | |
| 204 | # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size) |
| 205 | # define typeof_chunk(ch) \ |
| 206 | (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100) |
| 207 | # define set_typeof_chunk(ch,t) \ |
| 208 | (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100) |
| 209 | #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \ |
| 210 | ? MAXYCOUNT - 1 \ |
| 211 | : ( (size) > 40 \ |
| 212 | ? ((size) - 1)/8 + 5 \ |
| 213 | : ((size) - 1)/4)) |
| 214 | |
| 215 | Malloc_t |
| 216 | Perl_safexmalloc(I32 x, MEM_SIZE size) |
| 217 | { |
| 218 | register char* where = (char*)safemalloc(size + ALIGN); |
| 219 | |
| 220 | xcount[x] += size; |
| 221 | xycount[x][SIZE_TO_Y(size)]++; |
| 222 | set_typeof_chunk(where, x); |
| 223 | sizeof_chunk(where) = size; |
| 224 | return (Malloc_t)(where + ALIGN); |
| 225 | } |
| 226 | |
| 227 | Malloc_t |
| 228 | Perl_safexrealloc(Malloc_t wh, MEM_SIZE size) |
| 229 | { |
| 230 | char *where = (char*)wh; |
| 231 | |
| 232 | if (!wh) |
| 233 | return safexmalloc(0,size); |
| 234 | |
| 235 | { |
| 236 | MEM_SIZE old = sizeof_chunk(where - ALIGN); |
| 237 | int t = typeof_chunk(where - ALIGN); |
| 238 | register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN); |
| 239 | |
| 240 | xycount[t][SIZE_TO_Y(old)]--; |
| 241 | xycount[t][SIZE_TO_Y(size)]++; |
| 242 | xcount[t] += size - old; |
| 243 | sizeof_chunk(new) = size; |
| 244 | return (Malloc_t)(new + ALIGN); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | void |
| 249 | Perl_safexfree(Malloc_t wh) |
| 250 | { |
| 251 | I32 x; |
| 252 | char *where = (char*)wh; |
| 253 | MEM_SIZE size; |
| 254 | |
| 255 | if (!where) |
| 256 | return; |
| 257 | where -= ALIGN; |
| 258 | size = sizeof_chunk(where); |
| 259 | x = where[0] + 100 * where[1]; |
| 260 | xcount[x] -= size; |
| 261 | xycount[x][SIZE_TO_Y(size)]--; |
| 262 | safefree(where); |
| 263 | } |
| 264 | |
| 265 | Malloc_t |
| 266 | Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size) |
| 267 | { |
| 268 | register char * where = (char*)safexmalloc(x, size * count + ALIGN); |
| 269 | xcount[x] += size; |
| 270 | xycount[x][SIZE_TO_Y(size)]++; |
| 271 | memset((void*)(where + ALIGN), 0, size * count); |
| 272 | set_typeof_chunk(where, x); |
| 273 | sizeof_chunk(where) = size; |
| 274 | return (Malloc_t)(where + ALIGN); |
| 275 | } |
| 276 | |
| 277 | STATIC void |
| 278 | S_xstat(pTHX_ int flag) |
| 279 | { |
| 280 | register I32 i, j, total = 0; |
| 281 | I32 subtot[MAXYCOUNT]; |
| 282 | |
| 283 | for (j = 0; j < MAXYCOUNT; j++) { |
| 284 | subtot[j] = 0; |
| 285 | } |
| 286 | |
| 287 | 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); |
| 288 | for (i = 0; i < MAXXCOUNT; i++) { |
| 289 | total += xcount[i]; |
| 290 | for (j = 0; j < MAXYCOUNT; j++) { |
| 291 | subtot[j] += xycount[i][j]; |
| 292 | } |
| 293 | if (flag == 0 |
| 294 | ? xcount[i] /* Have something */ |
| 295 | : (flag == 2 |
| 296 | ? xcount[i] != lastxcount[i] /* Changed */ |
| 297 | : xcount[i] > lastxcount[i])) { /* Growed */ |
| 298 | PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100, |
| 299 | flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]); |
| 300 | lastxcount[i] = xcount[i]; |
| 301 | for (j = 0; j < MAXYCOUNT; j++) { |
| 302 | if ( flag == 0 |
| 303 | ? xycount[i][j] /* Have something */ |
| 304 | : (flag == 2 |
| 305 | ? xycount[i][j] != lastxycount[i][j] /* Changed */ |
| 306 | : xycount[i][j] > lastxycount[i][j])) { /* Growed */ |
| 307 | PerlIO_printf(Perl_debug_log,"%3ld ", |
| 308 | flag == 2 |
| 309 | ? xycount[i][j] - lastxycount[i][j] |
| 310 | : xycount[i][j]); |
| 311 | lastxycount[i][j] = xycount[i][j]; |
| 312 | } else { |
| 313 | PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]); |
| 314 | } |
| 315 | } |
| 316 | PerlIO_printf(Perl_debug_log, "\n"); |
| 317 | } |
| 318 | } |
| 319 | if (flag != 2) { |
| 320 | PerlIO_printf(Perl_debug_log, "Total %7ld ", total); |
| 321 | for (j = 0; j < MAXYCOUNT; j++) { |
| 322 | if (subtot[j]) { |
| 323 | PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]); |
| 324 | } else { |
| 325 | PerlIO_printf(Perl_debug_log, " . "); |
| 326 | } |
| 327 | } |
| 328 | PerlIO_printf(Perl_debug_log, "\n"); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | #endif /* LEAKTEST */ |
| 333 | |
| 334 | /* These must be defined when not using Perl's malloc for binary |
| 335 | * compatibility */ |
| 336 | |
| 337 | #ifndef MYMALLOC |
| 338 | |
| 339 | Malloc_t Perl_malloc (MEM_SIZE nbytes) |
| 340 | { |
| 341 | dTHXs; |
| 342 | return PerlMem_malloc(nbytes); |
| 343 | } |
| 344 | |
| 345 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) |
| 346 | { |
| 347 | dTHXs; |
| 348 | return PerlMem_calloc(elements, size); |
| 349 | } |
| 350 | |
| 351 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) |
| 352 | { |
| 353 | dTHXs; |
| 354 | return PerlMem_realloc(where, nbytes); |
| 355 | } |
| 356 | |
| 357 | Free_t Perl_mfree (Malloc_t where) |
| 358 | { |
| 359 | dTHXs; |
| 360 | PerlMem_free(where); |
| 361 | } |
| 362 | |
| 363 | #endif |
| 364 | |
| 365 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
| 366 | |
| 367 | char * |
| 368 | Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen) |
| 369 | { |
| 370 | register I32 tolen; |
| 371 | for (tolen = 0; from < fromend; from++, tolen++) { |
| 372 | if (*from == '\\') { |
| 373 | if (from[1] == delim) |
| 374 | from++; |
| 375 | else { |
| 376 | if (to < toend) |
| 377 | *to++ = *from; |
| 378 | tolen++; |
| 379 | from++; |
| 380 | } |
| 381 | } |
| 382 | else if (*from == delim) |
| 383 | break; |
| 384 | if (to < toend) |
| 385 | *to++ = *from; |
| 386 | } |
| 387 | if (to < toend) |
| 388 | *to = '\0'; |
| 389 | *retlen = tolen; |
| 390 | return from; |
| 391 | } |
| 392 | |
| 393 | /* return ptr to little string in big string, NULL if not found */ |
| 394 | /* This routine was donated by Corey Satten. */ |
| 395 | |
| 396 | char * |
| 397 | Perl_instr(pTHX_ register const char *big, register const char *little) |
| 398 | { |
| 399 | register const char *s, *x; |
| 400 | register I32 first; |
| 401 | |
| 402 | if (!little) |
| 403 | return (char*)big; |
| 404 | first = *little++; |
| 405 | if (!first) |
| 406 | return (char*)big; |
| 407 | while (*big) { |
| 408 | if (*big++ != first) |
| 409 | continue; |
| 410 | for (x=big,s=little; *s; /**/ ) { |
| 411 | if (!*x) |
| 412 | return Nullch; |
| 413 | if (*s++ != *x++) { |
| 414 | s--; |
| 415 | break; |
| 416 | } |
| 417 | } |
| 418 | if (!*s) |
| 419 | return (char*)(big-1); |
| 420 | } |
| 421 | return Nullch; |
| 422 | } |
| 423 | |
| 424 | /* same as instr but allow embedded nulls */ |
| 425 | |
| 426 | char * |
| 427 | Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend) |
| 428 | { |
| 429 | register const char *s, *x; |
| 430 | register I32 first = *little; |
| 431 | register const char *littleend = lend; |
| 432 | |
| 433 | if (!first && little >= littleend) |
| 434 | return (char*)big; |
| 435 | if (bigend - big < littleend - little) |
| 436 | return Nullch; |
| 437 | bigend -= littleend - little++; |
| 438 | while (big <= bigend) { |
| 439 | if (*big++ != first) |
| 440 | continue; |
| 441 | for (x=big,s=little; s < littleend; /**/ ) { |
| 442 | if (*s++ != *x++) { |
| 443 | s--; |
| 444 | break; |
| 445 | } |
| 446 | } |
| 447 | if (s >= littleend) |
| 448 | return (char*)(big-1); |
| 449 | } |
| 450 | return Nullch; |
| 451 | } |
| 452 | |
| 453 | /* reverse of the above--find last substring */ |
| 454 | |
| 455 | char * |
| 456 | Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend) |
| 457 | { |
| 458 | register const char *bigbeg; |
| 459 | register const char *s, *x; |
| 460 | register I32 first = *little; |
| 461 | register const char *littleend = lend; |
| 462 | |
| 463 | if (!first && little >= littleend) |
| 464 | return (char*)bigend; |
| 465 | bigbeg = big; |
| 466 | big = bigend - (littleend - little++); |
| 467 | while (big >= bigbeg) { |
| 468 | if (*big-- != first) |
| 469 | continue; |
| 470 | for (x=big+2,s=little; s < littleend; /**/ ) { |
| 471 | if (*s++ != *x++) { |
| 472 | s--; |
| 473 | break; |
| 474 | } |
| 475 | } |
| 476 | if (s >= littleend) |
| 477 | return (char*)(big+1); |
| 478 | } |
| 479 | return Nullch; |
| 480 | } |
| 481 | |
| 482 | #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/ |
| 483 | |
| 484 | /* As a space optimization, we do not compile tables for strings of length |
| 485 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are |
| 486 | special-cased in fbm_instr(). |
| 487 | |
| 488 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ |
| 489 | |
| 490 | /* |
| 491 | =head1 Miscellaneous Functions |
| 492 | |
| 493 | =for apidoc fbm_compile |
| 494 | |
| 495 | Analyses the string in order to make fast searches on it using fbm_instr() |
| 496 | -- the Boyer-Moore algorithm. |
| 497 | |
| 498 | =cut |
| 499 | */ |
| 500 | |
| 501 | void |
| 502 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
| 503 | { |
| 504 | register U8 *s; |
| 505 | register U8 *table; |
| 506 | register U32 i; |
| 507 | STRLEN len; |
| 508 | I32 rarest = 0; |
| 509 | U32 frequency = 256; |
| 510 | |
| 511 | if (flags & FBMcf_TAIL) |
| 512 | sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */ |
| 513 | s = (U8*)SvPV_force(sv, len); |
| 514 | (void)SvUPGRADE(sv, SVt_PVBM); |
| 515 | if (len == 0) /* TAIL might be on a zero-length string. */ |
| 516 | return; |
| 517 | if (len > 2) { |
| 518 | U8 mlen; |
| 519 | unsigned char *sb; |
| 520 | |
| 521 | if (len > 255) |
| 522 | mlen = 255; |
| 523 | else |
| 524 | mlen = (U8)len; |
| 525 | Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET); |
| 526 | table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET); |
| 527 | s = table - 1 - FBM_TABLE_OFFSET; /* last char */ |
| 528 | memset((void*)table, mlen, 256); |
| 529 | table[-1] = (U8)flags; |
| 530 | i = 0; |
| 531 | sb = s - mlen + 1; /* first char (maybe) */ |
| 532 | while (s >= sb) { |
| 533 | if (table[*s] == mlen) |
| 534 | table[*s] = (U8)i; |
| 535 | s--, i++; |
| 536 | } |
| 537 | } |
| 538 | sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */ |
| 539 | SvVALID_on(sv); |
| 540 | |
| 541 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
| 542 | for (i = 0; i < len; i++) { |
| 543 | if (PL_freq[s[i]] < frequency) { |
| 544 | rarest = i; |
| 545 | frequency = PL_freq[s[i]]; |
| 546 | } |
| 547 | } |
| 548 | BmRARE(sv) = s[rarest]; |
| 549 | BmPREVIOUS(sv) = rarest; |
| 550 | BmUSEFUL(sv) = 100; /* Initial value */ |
| 551 | if (flags & FBMcf_TAIL) |
| 552 | SvTAIL_on(sv); |
| 553 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n", |
| 554 | BmRARE(sv),BmPREVIOUS(sv))); |
| 555 | } |
| 556 | |
| 557 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
| 558 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
| 559 | if multiline */ |
| 560 | |
| 561 | /* |
| 562 | =for apidoc fbm_instr |
| 563 | |
| 564 | Returns the location of the SV in the string delimited by C<str> and |
| 565 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> |
| 566 | does not have to be fbm_compiled, but the search will not be as fast |
| 567 | then. |
| 568 | |
| 569 | =cut |
| 570 | */ |
| 571 | |
| 572 | char * |
| 573 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
| 574 | { |
| 575 | register unsigned char *s; |
| 576 | STRLEN l; |
| 577 | register unsigned char *little = (unsigned char *)SvPV(littlestr,l); |
| 578 | register STRLEN littlelen = l; |
| 579 | register I32 multiline = flags & FBMrf_MULTILINE; |
| 580 | |
| 581 | if (bigend - big < littlelen) { |
| 582 | if ( SvTAIL(littlestr) |
| 583 | && (bigend - big == littlelen - 1) |
| 584 | && (littlelen == 1 |
| 585 | || (*big == *little && |
| 586 | memEQ((char *)big, (char *)little, littlelen - 1)))) |
| 587 | return (char*)big; |
| 588 | return Nullch; |
| 589 | } |
| 590 | |
| 591 | if (littlelen <= 2) { /* Special-cased */ |
| 592 | |
| 593 | if (littlelen == 1) { |
| 594 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ |
| 595 | /* Know that bigend != big. */ |
| 596 | if (bigend[-1] == '\n') |
| 597 | return (char *)(bigend - 1); |
| 598 | return (char *) bigend; |
| 599 | } |
| 600 | s = big; |
| 601 | while (s < bigend) { |
| 602 | if (*s == *little) |
| 603 | return (char *)s; |
| 604 | s++; |
| 605 | } |
| 606 | if (SvTAIL(littlestr)) |
| 607 | return (char *) bigend; |
| 608 | return Nullch; |
| 609 | } |
| 610 | if (!littlelen) |
| 611 | return (char*)big; /* Cannot be SvTAIL! */ |
| 612 | |
| 613 | /* littlelen is 2 */ |
| 614 | if (SvTAIL(littlestr) && !multiline) { |
| 615 | if (bigend[-1] == '\n' && bigend[-2] == *little) |
| 616 | return (char*)bigend - 2; |
| 617 | if (bigend[-1] == *little) |
| 618 | return (char*)bigend - 1; |
| 619 | return Nullch; |
| 620 | } |
| 621 | { |
| 622 | /* This should be better than FBM if c1 == c2, and almost |
| 623 | as good otherwise: maybe better since we do less indirection. |
| 624 | And we save a lot of memory by caching no table. */ |
| 625 | register unsigned char c1 = little[0]; |
| 626 | register unsigned char c2 = little[1]; |
| 627 | |
| 628 | s = big + 1; |
| 629 | bigend--; |
| 630 | if (c1 != c2) { |
| 631 | while (s <= bigend) { |
| 632 | if (s[0] == c2) { |
| 633 | if (s[-1] == c1) |
| 634 | return (char*)s - 1; |
| 635 | s += 2; |
| 636 | continue; |
| 637 | } |
| 638 | next_chars: |
| 639 | if (s[0] == c1) { |
| 640 | if (s == bigend) |
| 641 | goto check_1char_anchor; |
| 642 | if (s[1] == c2) |
| 643 | return (char*)s; |
| 644 | else { |
| 645 | s++; |
| 646 | goto next_chars; |
| 647 | } |
| 648 | } |
| 649 | else |
| 650 | s += 2; |
| 651 | } |
| 652 | goto check_1char_anchor; |
| 653 | } |
| 654 | /* Now c1 == c2 */ |
| 655 | while (s <= bigend) { |
| 656 | if (s[0] == c1) { |
| 657 | if (s[-1] == c1) |
| 658 | return (char*)s - 1; |
| 659 | if (s == bigend) |
| 660 | goto check_1char_anchor; |
| 661 | if (s[1] == c1) |
| 662 | return (char*)s; |
| 663 | s += 3; |
| 664 | } |
| 665 | else |
| 666 | s += 2; |
| 667 | } |
| 668 | } |
| 669 | check_1char_anchor: /* One char and anchor! */ |
| 670 | if (SvTAIL(littlestr) && (*bigend == *little)) |
| 671 | return (char *)bigend; /* bigend is already decremented. */ |
| 672 | return Nullch; |
| 673 | } |
| 674 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
| 675 | s = bigend - littlelen; |
| 676 | if (s >= big && bigend[-1] == '\n' && *s == *little |
| 677 | /* Automatically of length > 2 */ |
| 678 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) |
| 679 | { |
| 680 | return (char*)s; /* how sweet it is */ |
| 681 | } |
| 682 | if (s[1] == *little |
| 683 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) |
| 684 | { |
| 685 | return (char*)s + 1; /* how sweet it is */ |
| 686 | } |
| 687 | return Nullch; |
| 688 | } |
| 689 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
| 690 | char *b = ninstr((char*)big,(char*)bigend, |
| 691 | (char*)little, (char*)little + littlelen); |
| 692 | |
| 693 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ |
| 694 | /* Chop \n from littlestr: */ |
| 695 | s = bigend - littlelen + 1; |
| 696 | if (*s == *little |
| 697 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) |
| 698 | { |
| 699 | return (char*)s; |
| 700 | } |
| 701 | return Nullch; |
| 702 | } |
| 703 | return b; |
| 704 | } |
| 705 | |
| 706 | { /* Do actual FBM. */ |
| 707 | register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; |
| 708 | register unsigned char *oldlittle; |
| 709 | |
| 710 | if (littlelen > bigend - big) |
| 711 | return Nullch; |
| 712 | --littlelen; /* Last char found by table lookup */ |
| 713 | |
| 714 | s = big + littlelen; |
| 715 | little += littlelen; /* last char */ |
| 716 | oldlittle = little; |
| 717 | if (s < bigend) { |
| 718 | register I32 tmp; |
| 719 | |
| 720 | top2: |
| 721 | /*SUPPRESS 560*/ |
| 722 | if ((tmp = table[*s])) { |
| 723 | if ((s += tmp) < bigend) |
| 724 | goto top2; |
| 725 | goto check_end; |
| 726 | } |
| 727 | else { /* less expensive than calling strncmp() */ |
| 728 | register unsigned char *olds = s; |
| 729 | |
| 730 | tmp = littlelen; |
| 731 | |
| 732 | while (tmp--) { |
| 733 | if (*--s == *--little) |
| 734 | continue; |
| 735 | s = olds + 1; /* here we pay the price for failure */ |
| 736 | little = oldlittle; |
| 737 | if (s < bigend) /* fake up continue to outer loop */ |
| 738 | goto top2; |
| 739 | goto check_end; |
| 740 | } |
| 741 | return (char *)s; |
| 742 | } |
| 743 | } |
| 744 | check_end: |
| 745 | if ( s == bigend && (table[-1] & FBMcf_TAIL) |
| 746 | && memEQ((char *)(bigend - littlelen), |
| 747 | (char *)(oldlittle - littlelen), littlelen) ) |
| 748 | return (char*)bigend - littlelen; |
| 749 | return Nullch; |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | /* start_shift, end_shift are positive quantities which give offsets |
| 754 | of ends of some substring of bigstr. |
| 755 | If `last' we want the last occurence. |
| 756 | old_posp is the way of communication between consequent calls if |
| 757 | the next call needs to find the . |
| 758 | The initial *old_posp should be -1. |
| 759 | |
| 760 | Note that we take into account SvTAIL, so one can get extra |
| 761 | optimizations if _ALL flag is set. |
| 762 | */ |
| 763 | |
| 764 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
| 765 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
| 766 | is not supported yet. */ |
| 767 | |
| 768 | char * |
| 769 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
| 770 | { |
| 771 | register unsigned char *s, *x; |
| 772 | register unsigned char *big; |
| 773 | register I32 pos; |
| 774 | register I32 previous; |
| 775 | register I32 first; |
| 776 | register unsigned char *little; |
| 777 | register I32 stop_pos; |
| 778 | register unsigned char *littleend; |
| 779 | I32 found = 0; |
| 780 | |
| 781 | if (*old_posp == -1 |
| 782 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
| 783 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
| 784 | cant_find: |
| 785 | if ( BmRARE(littlestr) == '\n' |
| 786 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
| 787 | little = (unsigned char *)(SvPVX(littlestr)); |
| 788 | littleend = little + SvCUR(littlestr); |
| 789 | first = *little++; |
| 790 | goto check_tail; |
| 791 | } |
| 792 | return Nullch; |
| 793 | } |
| 794 | |
| 795 | little = (unsigned char *)(SvPVX(littlestr)); |
| 796 | littleend = little + SvCUR(littlestr); |
| 797 | first = *little++; |
| 798 | /* The value of pos we can start at: */ |
| 799 | previous = BmPREVIOUS(littlestr); |
| 800 | big = (unsigned char *)(SvPVX(bigstr)); |
| 801 | /* The value of pos we can stop at: */ |
| 802 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); |
| 803 | if (previous + start_shift > stop_pos) { |
| 804 | /* |
| 805 | stop_pos does not include SvTAIL in the count, so this check is incorrect |
| 806 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 |
| 807 | */ |
| 808 | #if 0 |
| 809 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
| 810 | goto check_tail; |
| 811 | #endif |
| 812 | return Nullch; |
| 813 | } |
| 814 | while (pos < previous + start_shift) { |
| 815 | if (!(pos += PL_screamnext[pos])) |
| 816 | goto cant_find; |
| 817 | } |
| 818 | big -= previous; |
| 819 | do { |
| 820 | if (pos >= stop_pos) break; |
| 821 | if (big[pos] != first) |
| 822 | continue; |
| 823 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
| 824 | if (*s++ != *x++) { |
| 825 | s--; |
| 826 | break; |
| 827 | } |
| 828 | } |
| 829 | if (s == littleend) { |
| 830 | *old_posp = pos; |
| 831 | if (!last) return (char *)(big+pos); |
| 832 | found = 1; |
| 833 | } |
| 834 | } while ( pos += PL_screamnext[pos] ); |
| 835 | if (last && found) |
| 836 | return (char *)(big+(*old_posp)); |
| 837 | check_tail: |
| 838 | if (!SvTAIL(littlestr) || (end_shift > 0)) |
| 839 | return Nullch; |
| 840 | /* Ignore the trailing "\n". This code is not microoptimized */ |
| 841 | big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr)); |
| 842 | stop_pos = littleend - little; /* Actual littlestr len */ |
| 843 | if (stop_pos == 0) |
| 844 | return (char*)big; |
| 845 | big -= stop_pos; |
| 846 | if (*big == first |
| 847 | && ((stop_pos == 1) || |
| 848 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) |
| 849 | return (char*)big; |
| 850 | return Nullch; |
| 851 | } |
| 852 | |
| 853 | I32 |
| 854 | Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len) |
| 855 | { |
| 856 | register U8 *a = (U8 *)s1; |
| 857 | register U8 *b = (U8 *)s2; |
| 858 | while (len--) { |
| 859 | if (*a != *b && *a != PL_fold[*b]) |
| 860 | return 1; |
| 861 | a++,b++; |
| 862 | } |
| 863 | return 0; |
| 864 | } |
| 865 | |
| 866 | I32 |
| 867 | Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len) |
| 868 | { |
| 869 | register U8 *a = (U8 *)s1; |
| 870 | register U8 *b = (U8 *)s2; |
| 871 | while (len--) { |
| 872 | if (*a != *b && *a != PL_fold_locale[*b]) |
| 873 | return 1; |
| 874 | a++,b++; |
| 875 | } |
| 876 | return 0; |
| 877 | } |
| 878 | |
| 879 | /* copy a string to a safe spot */ |
| 880 | |
| 881 | /* |
| 882 | =head1 Memory Management |
| 883 | |
| 884 | =for apidoc savepv |
| 885 | |
| 886 | Copy a string to a safe spot. This does not use an SV. |
| 887 | |
| 888 | =cut |
| 889 | */ |
| 890 | |
| 891 | char * |
| 892 | Perl_savepv(pTHX_ const char *sv) |
| 893 | { |
| 894 | register char *newaddr = Nullch; |
| 895 | if (sv) { |
| 896 | New(902,newaddr,strlen(sv)+1,char); |
| 897 | (void)strcpy(newaddr,sv); |
| 898 | } |
| 899 | return newaddr; |
| 900 | } |
| 901 | |
| 902 | /* same thing but with a known length */ |
| 903 | |
| 904 | /* |
| 905 | =for apidoc savepvn |
| 906 | |
| 907 | Copy a string to a safe spot. The C<len> indicates number of bytes to |
| 908 | copy. If pointer is NULL allocate space for a string of size specified. |
| 909 | This does not use an SV. |
| 910 | |
| 911 | =cut |
| 912 | */ |
| 913 | |
| 914 | char * |
| 915 | Perl_savepvn(pTHX_ const char *sv, register I32 len) |
| 916 | { |
| 917 | register char *newaddr; |
| 918 | |
| 919 | New(903,newaddr,len+1,char); |
| 920 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
| 921 | if (sv) { |
| 922 | Copy(sv,newaddr,len,char); /* might not be null terminated */ |
| 923 | newaddr[len] = '\0'; /* is now */ |
| 924 | } |
| 925 | else { |
| 926 | Zero(newaddr,len+1,char); |
| 927 | } |
| 928 | return newaddr; |
| 929 | } |
| 930 | |
| 931 | /* |
| 932 | =for apidoc savesharedpv |
| 933 | |
| 934 | Copy a string to a safe spot in memory shared between threads. |
| 935 | This does not use an SV. |
| 936 | |
| 937 | =cut |
| 938 | */ |
| 939 | char * |
| 940 | Perl_savesharedpv(pTHX_ const char *sv) |
| 941 | { |
| 942 | register char *newaddr = Nullch; |
| 943 | if (sv) { |
| 944 | newaddr = PerlMemShared_malloc(strlen(sv)+1); |
| 945 | (void)strcpy(newaddr,sv); |
| 946 | } |
| 947 | return newaddr; |
| 948 | } |
| 949 | |
| 950 | |
| 951 | |
| 952 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
| 953 | |
| 954 | STATIC SV * |
| 955 | S_mess_alloc(pTHX) |
| 956 | { |
| 957 | SV *sv; |
| 958 | XPVMG *any; |
| 959 | |
| 960 | if (!PL_dirty) |
| 961 | return sv_2mortal(newSVpvn("",0)); |
| 962 | |
| 963 | if (PL_mess_sv) |
| 964 | return PL_mess_sv; |
| 965 | |
| 966 | /* Create as PVMG now, to avoid any upgrading later */ |
| 967 | New(905, sv, 1, SV); |
| 968 | Newz(905, any, 1, XPVMG); |
| 969 | SvFLAGS(sv) = SVt_PVMG; |
| 970 | SvANY(sv) = (void*)any; |
| 971 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ |
| 972 | PL_mess_sv = sv; |
| 973 | return sv; |
| 974 | } |
| 975 | |
| 976 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 977 | char * |
| 978 | Perl_form_nocontext(const char* pat, ...) |
| 979 | { |
| 980 | dTHX; |
| 981 | char *retval; |
| 982 | va_list args; |
| 983 | va_start(args, pat); |
| 984 | retval = vform(pat, &args); |
| 985 | va_end(args); |
| 986 | return retval; |
| 987 | } |
| 988 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 989 | |
| 990 | /* |
| 991 | =head1 Miscellaneous Functions |
| 992 | =for apidoc form |
| 993 | |
| 994 | Takes a sprintf-style format pattern and conventional |
| 995 | (non-SV) arguments and returns the formatted string. |
| 996 | |
| 997 | (char *) Perl_form(pTHX_ const char* pat, ...) |
| 998 | |
| 999 | can be used any place a string (char *) is required: |
| 1000 | |
| 1001 | char * s = Perl_form("%d.%d",major,minor); |
| 1002 | |
| 1003 | Uses a single private buffer so if you want to format several strings you |
| 1004 | must explicitly copy the earlier strings away (and free the copies when you |
| 1005 | are done). |
| 1006 | |
| 1007 | =cut |
| 1008 | */ |
| 1009 | |
| 1010 | char * |
| 1011 | Perl_form(pTHX_ const char* pat, ...) |
| 1012 | { |
| 1013 | char *retval; |
| 1014 | va_list args; |
| 1015 | va_start(args, pat); |
| 1016 | retval = vform(pat, &args); |
| 1017 | va_end(args); |
| 1018 | return retval; |
| 1019 | } |
| 1020 | |
| 1021 | char * |
| 1022 | Perl_vform(pTHX_ const char *pat, va_list *args) |
| 1023 | { |
| 1024 | SV *sv = mess_alloc(); |
| 1025 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
| 1026 | return SvPVX(sv); |
| 1027 | } |
| 1028 | |
| 1029 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1030 | SV * |
| 1031 | Perl_mess_nocontext(const char *pat, ...) |
| 1032 | { |
| 1033 | dTHX; |
| 1034 | SV *retval; |
| 1035 | va_list args; |
| 1036 | va_start(args, pat); |
| 1037 | retval = vmess(pat, &args); |
| 1038 | va_end(args); |
| 1039 | return retval; |
| 1040 | } |
| 1041 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1042 | |
| 1043 | SV * |
| 1044 | Perl_mess(pTHX_ const char *pat, ...) |
| 1045 | { |
| 1046 | SV *retval; |
| 1047 | va_list args; |
| 1048 | va_start(args, pat); |
| 1049 | retval = vmess(pat, &args); |
| 1050 | va_end(args); |
| 1051 | return retval; |
| 1052 | } |
| 1053 | |
| 1054 | STATIC COP* |
| 1055 | S_closest_cop(pTHX_ COP *cop, OP *o) |
| 1056 | { |
| 1057 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ |
| 1058 | |
| 1059 | if (!o || o == PL_op) return cop; |
| 1060 | |
| 1061 | if (o->op_flags & OPf_KIDS) { |
| 1062 | OP *kid; |
| 1063 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) |
| 1064 | { |
| 1065 | COP *new_cop; |
| 1066 | |
| 1067 | /* If the OP_NEXTSTATE has been optimised away we can still use it |
| 1068 | * the get the file and line number. */ |
| 1069 | |
| 1070 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) |
| 1071 | cop = (COP *)kid; |
| 1072 | |
| 1073 | /* Keep searching, and return when we've found something. */ |
| 1074 | |
| 1075 | new_cop = closest_cop(cop, kid); |
| 1076 | if (new_cop) return new_cop; |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | /* Nothing found. */ |
| 1081 | |
| 1082 | return 0; |
| 1083 | } |
| 1084 | |
| 1085 | SV * |
| 1086 | Perl_vmess(pTHX_ const char *pat, va_list *args) |
| 1087 | { |
| 1088 | SV *sv = mess_alloc(); |
| 1089 | static char dgd[] = " during global destruction.\n"; |
| 1090 | COP *cop; |
| 1091 | |
| 1092 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
| 1093 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
| 1094 | |
| 1095 | /* |
| 1096 | * Try and find the file and line for PL_op. This will usually be |
| 1097 | * PL_curcop, but it might be a cop that has been optimised away. We |
| 1098 | * can try to find such a cop by searching through the optree starting |
| 1099 | * from the sibling of PL_curcop. |
| 1100 | */ |
| 1101 | |
| 1102 | cop = closest_cop(PL_curcop, PL_curcop->op_sibling); |
| 1103 | if (!cop) cop = PL_curcop; |
| 1104 | |
| 1105 | if (CopLINE(cop)) |
| 1106 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
| 1107 | OutCopFILE(cop), (IV)CopLINE(cop)); |
| 1108 | if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) { |
| 1109 | bool line_mode = (RsSIMPLE(PL_rs) && |
| 1110 | SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n'); |
| 1111 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
| 1112 | PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv), |
| 1113 | line_mode ? "line" : "chunk", |
| 1114 | (IV)IoLINES(GvIOp(PL_last_in_gv))); |
| 1115 | } |
| 1116 | #ifdef USE_5005THREADS |
| 1117 | if (thr->tid) |
| 1118 | Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid); |
| 1119 | #endif |
| 1120 | sv_catpv(sv, PL_dirty ? dgd : ".\n"); |
| 1121 | } |
| 1122 | return sv; |
| 1123 | } |
| 1124 | |
| 1125 | OP * |
| 1126 | Perl_vdie(pTHX_ const char* pat, va_list *args) |
| 1127 | { |
| 1128 | char *message; |
| 1129 | int was_in_eval = PL_in_eval; |
| 1130 | HV *stash; |
| 1131 | GV *gv; |
| 1132 | CV *cv; |
| 1133 | SV *msv; |
| 1134 | STRLEN msglen; |
| 1135 | |
| 1136 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 1137 | "%p: die: curstack = %p, mainstack = %p\n", |
| 1138 | thr, PL_curstack, PL_mainstack)); |
| 1139 | |
| 1140 | if (pat) { |
| 1141 | msv = vmess(pat, args); |
| 1142 | if (PL_errors && SvCUR(PL_errors)) { |
| 1143 | sv_catsv(PL_errors, msv); |
| 1144 | message = SvPV(PL_errors, msglen); |
| 1145 | SvCUR_set(PL_errors, 0); |
| 1146 | } |
| 1147 | else |
| 1148 | message = SvPV(msv,msglen); |
| 1149 | } |
| 1150 | else { |
| 1151 | message = Nullch; |
| 1152 | msglen = 0; |
| 1153 | } |
| 1154 | |
| 1155 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 1156 | "%p: die: message = %s\ndiehook = %p\n", |
| 1157 | thr, message, PL_diehook)); |
| 1158 | if (PL_diehook) { |
| 1159 | /* sv_2cv might call Perl_croak() */ |
| 1160 | SV *olddiehook = PL_diehook; |
| 1161 | ENTER; |
| 1162 | SAVESPTR(PL_diehook); |
| 1163 | PL_diehook = Nullsv; |
| 1164 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
| 1165 | LEAVE; |
| 1166 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1167 | dSP; |
| 1168 | SV *msg; |
| 1169 | |
| 1170 | ENTER; |
| 1171 | save_re_context(); |
| 1172 | if (message) { |
| 1173 | msg = newSVpvn(message, msglen); |
| 1174 | SvREADONLY_on(msg); |
| 1175 | SAVEFREESV(msg); |
| 1176 | } |
| 1177 | else { |
| 1178 | msg = ERRSV; |
| 1179 | } |
| 1180 | |
| 1181 | PUSHSTACKi(PERLSI_DIEHOOK); |
| 1182 | PUSHMARK(SP); |
| 1183 | XPUSHs(msg); |
| 1184 | PUTBACK; |
| 1185 | call_sv((SV*)cv, G_DISCARD); |
| 1186 | POPSTACK; |
| 1187 | LEAVE; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | PL_restartop = die_where(message, msglen); |
| 1192 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 1193 | "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n", |
| 1194 | thr, PL_restartop, was_in_eval, PL_top_env)); |
| 1195 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
| 1196 | JMPENV_JUMP(3); |
| 1197 | return PL_restartop; |
| 1198 | } |
| 1199 | |
| 1200 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1201 | OP * |
| 1202 | Perl_die_nocontext(const char* pat, ...) |
| 1203 | { |
| 1204 | dTHX; |
| 1205 | OP *o; |
| 1206 | va_list args; |
| 1207 | va_start(args, pat); |
| 1208 | o = vdie(pat, &args); |
| 1209 | va_end(args); |
| 1210 | return o; |
| 1211 | } |
| 1212 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1213 | |
| 1214 | OP * |
| 1215 | Perl_die(pTHX_ const char* pat, ...) |
| 1216 | { |
| 1217 | OP *o; |
| 1218 | va_list args; |
| 1219 | va_start(args, pat); |
| 1220 | o = vdie(pat, &args); |
| 1221 | va_end(args); |
| 1222 | return o; |
| 1223 | } |
| 1224 | |
| 1225 | void |
| 1226 | Perl_vcroak(pTHX_ const char* pat, va_list *args) |
| 1227 | { |
| 1228 | char *message; |
| 1229 | HV *stash; |
| 1230 | GV *gv; |
| 1231 | CV *cv; |
| 1232 | SV *msv; |
| 1233 | STRLEN msglen; |
| 1234 | |
| 1235 | if (pat) { |
| 1236 | msv = vmess(pat, args); |
| 1237 | if (PL_errors && SvCUR(PL_errors)) { |
| 1238 | sv_catsv(PL_errors, msv); |
| 1239 | message = SvPV(PL_errors, msglen); |
| 1240 | SvCUR_set(PL_errors, 0); |
| 1241 | } |
| 1242 | else |
| 1243 | message = SvPV(msv,msglen); |
| 1244 | } |
| 1245 | else { |
| 1246 | message = Nullch; |
| 1247 | msglen = 0; |
| 1248 | } |
| 1249 | |
| 1250 | DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", |
| 1251 | PTR2UV(thr), message)); |
| 1252 | |
| 1253 | if (PL_diehook) { |
| 1254 | /* sv_2cv might call Perl_croak() */ |
| 1255 | SV *olddiehook = PL_diehook; |
| 1256 | ENTER; |
| 1257 | SAVESPTR(PL_diehook); |
| 1258 | PL_diehook = Nullsv; |
| 1259 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
| 1260 | LEAVE; |
| 1261 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1262 | dSP; |
| 1263 | SV *msg; |
| 1264 | |
| 1265 | ENTER; |
| 1266 | save_re_context(); |
| 1267 | if (message) { |
| 1268 | msg = newSVpvn(message, msglen); |
| 1269 | SvREADONLY_on(msg); |
| 1270 | SAVEFREESV(msg); |
| 1271 | } |
| 1272 | else { |
| 1273 | msg = ERRSV; |
| 1274 | } |
| 1275 | |
| 1276 | PUSHSTACKi(PERLSI_DIEHOOK); |
| 1277 | PUSHMARK(SP); |
| 1278 | XPUSHs(msg); |
| 1279 | PUTBACK; |
| 1280 | call_sv((SV*)cv, G_DISCARD); |
| 1281 | POPSTACK; |
| 1282 | LEAVE; |
| 1283 | } |
| 1284 | } |
| 1285 | if (PL_in_eval) { |
| 1286 | PL_restartop = die_where(message, msglen); |
| 1287 | JMPENV_JUMP(3); |
| 1288 | } |
| 1289 | else if (!message) |
| 1290 | message = SvPVx(ERRSV, msglen); |
| 1291 | |
| 1292 | { |
| 1293 | #ifdef USE_SFIO |
| 1294 | /* SFIO can really mess with your errno */ |
| 1295 | int e = errno; |
| 1296 | #endif |
| 1297 | PerlIO *serr = Perl_error_log; |
| 1298 | |
| 1299 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
| 1300 | (void)PerlIO_flush(serr); |
| 1301 | #ifdef USE_SFIO |
| 1302 | errno = e; |
| 1303 | #endif |
| 1304 | } |
| 1305 | my_failure_exit(); |
| 1306 | } |
| 1307 | |
| 1308 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1309 | void |
| 1310 | Perl_croak_nocontext(const char *pat, ...) |
| 1311 | { |
| 1312 | dTHX; |
| 1313 | va_list args; |
| 1314 | va_start(args, pat); |
| 1315 | vcroak(pat, &args); |
| 1316 | /* NOTREACHED */ |
| 1317 | va_end(args); |
| 1318 | } |
| 1319 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1320 | |
| 1321 | /* |
| 1322 | =head1 Warning and Dieing |
| 1323 | |
| 1324 | =for apidoc croak |
| 1325 | |
| 1326 | This is the XSUB-writer's interface to Perl's C<die> function. |
| 1327 | Normally use this function the same way you use the C C<printf> |
| 1328 | function. See C<warn>. |
| 1329 | |
| 1330 | If you want to throw an exception object, assign the object to |
| 1331 | C<$@> and then pass C<Nullch> to croak(): |
| 1332 | |
| 1333 | errsv = get_sv("@", TRUE); |
| 1334 | sv_setsv(errsv, exception_object); |
| 1335 | croak(Nullch); |
| 1336 | |
| 1337 | =cut |
| 1338 | */ |
| 1339 | |
| 1340 | void |
| 1341 | Perl_croak(pTHX_ const char *pat, ...) |
| 1342 | { |
| 1343 | va_list args; |
| 1344 | va_start(args, pat); |
| 1345 | vcroak(pat, &args); |
| 1346 | /* NOTREACHED */ |
| 1347 | va_end(args); |
| 1348 | } |
| 1349 | |
| 1350 | void |
| 1351 | Perl_vwarn(pTHX_ const char* pat, va_list *args) |
| 1352 | { |
| 1353 | char *message; |
| 1354 | HV *stash; |
| 1355 | GV *gv; |
| 1356 | CV *cv; |
| 1357 | SV *msv; |
| 1358 | STRLEN msglen; |
| 1359 | IO *io; |
| 1360 | MAGIC *mg; |
| 1361 | |
| 1362 | msv = vmess(pat, args); |
| 1363 | message = SvPV(msv, msglen); |
| 1364 | |
| 1365 | if (PL_warnhook) { |
| 1366 | /* sv_2cv might call Perl_warn() */ |
| 1367 | SV *oldwarnhook = PL_warnhook; |
| 1368 | ENTER; |
| 1369 | SAVESPTR(PL_warnhook); |
| 1370 | PL_warnhook = Nullsv; |
| 1371 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
| 1372 | LEAVE; |
| 1373 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1374 | dSP; |
| 1375 | SV *msg; |
| 1376 | |
| 1377 | ENTER; |
| 1378 | save_re_context(); |
| 1379 | msg = newSVpvn(message, msglen); |
| 1380 | SvREADONLY_on(msg); |
| 1381 | SAVEFREESV(msg); |
| 1382 | |
| 1383 | PUSHSTACKi(PERLSI_WARNHOOK); |
| 1384 | PUSHMARK(SP); |
| 1385 | XPUSHs(msg); |
| 1386 | PUTBACK; |
| 1387 | call_sv((SV*)cv, G_DISCARD); |
| 1388 | POPSTACK; |
| 1389 | LEAVE; |
| 1390 | return; |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | /* if STDERR is tied, use it instead */ |
| 1395 | if (PL_stderrgv && (io = GvIOp(PL_stderrgv)) |
| 1396 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
| 1397 | dSP; ENTER; |
| 1398 | PUSHMARK(SP); |
| 1399 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
| 1400 | XPUSHs(sv_2mortal(newSVpvn(message, msglen))); |
| 1401 | PUTBACK; |
| 1402 | call_method("PRINT", G_SCALAR); |
| 1403 | LEAVE; |
| 1404 | return; |
| 1405 | } |
| 1406 | |
| 1407 | { |
| 1408 | PerlIO *serr = Perl_error_log; |
| 1409 | |
| 1410 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
| 1411 | #ifdef LEAKTEST |
| 1412 | DEBUG_L(*message == '!' |
| 1413 | ? (xstat(message[1]=='!' |
| 1414 | ? (message[2]=='!' ? 2 : 1) |
| 1415 | : 0) |
| 1416 | , 0) |
| 1417 | : 0); |
| 1418 | #endif |
| 1419 | (void)PerlIO_flush(serr); |
| 1420 | } |
| 1421 | } |
| 1422 | |
| 1423 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1424 | void |
| 1425 | Perl_warn_nocontext(const char *pat, ...) |
| 1426 | { |
| 1427 | dTHX; |
| 1428 | va_list args; |
| 1429 | va_start(args, pat); |
| 1430 | vwarn(pat, &args); |
| 1431 | va_end(args); |
| 1432 | } |
| 1433 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1434 | |
| 1435 | /* |
| 1436 | =for apidoc warn |
| 1437 | |
| 1438 | This is the XSUB-writer's interface to Perl's C<warn> function. Use this |
| 1439 | function the same way you use the C C<printf> function. See |
| 1440 | C<croak>. |
| 1441 | |
| 1442 | =cut |
| 1443 | */ |
| 1444 | |
| 1445 | void |
| 1446 | Perl_warn(pTHX_ const char *pat, ...) |
| 1447 | { |
| 1448 | va_list args; |
| 1449 | va_start(args, pat); |
| 1450 | vwarn(pat, &args); |
| 1451 | va_end(args); |
| 1452 | } |
| 1453 | |
| 1454 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1455 | void |
| 1456 | Perl_warner_nocontext(U32 err, const char *pat, ...) |
| 1457 | { |
| 1458 | dTHX; |
| 1459 | va_list args; |
| 1460 | va_start(args, pat); |
| 1461 | vwarner(err, pat, &args); |
| 1462 | va_end(args); |
| 1463 | } |
| 1464 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1465 | |
| 1466 | void |
| 1467 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
| 1468 | { |
| 1469 | va_list args; |
| 1470 | va_start(args, pat); |
| 1471 | vwarner(err, pat, &args); |
| 1472 | va_end(args); |
| 1473 | } |
| 1474 | |
| 1475 | void |
| 1476 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) |
| 1477 | { |
| 1478 | char *message; |
| 1479 | HV *stash; |
| 1480 | GV *gv; |
| 1481 | CV *cv; |
| 1482 | SV *msv; |
| 1483 | STRLEN msglen; |
| 1484 | |
| 1485 | msv = vmess(pat, args); |
| 1486 | message = SvPV(msv, msglen); |
| 1487 | |
| 1488 | if (ckDEAD(err)) { |
| 1489 | #ifdef USE_5005THREADS |
| 1490 | DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message)); |
| 1491 | #endif /* USE_5005THREADS */ |
| 1492 | if (PL_diehook) { |
| 1493 | /* sv_2cv might call Perl_croak() */ |
| 1494 | SV *olddiehook = PL_diehook; |
| 1495 | ENTER; |
| 1496 | SAVESPTR(PL_diehook); |
| 1497 | PL_diehook = Nullsv; |
| 1498 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
| 1499 | LEAVE; |
| 1500 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1501 | dSP; |
| 1502 | SV *msg; |
| 1503 | |
| 1504 | ENTER; |
| 1505 | save_re_context(); |
| 1506 | msg = newSVpvn(message, msglen); |
| 1507 | SvREADONLY_on(msg); |
| 1508 | SAVEFREESV(msg); |
| 1509 | |
| 1510 | PUSHSTACKi(PERLSI_DIEHOOK); |
| 1511 | PUSHMARK(sp); |
| 1512 | XPUSHs(msg); |
| 1513 | PUTBACK; |
| 1514 | call_sv((SV*)cv, G_DISCARD); |
| 1515 | POPSTACK; |
| 1516 | LEAVE; |
| 1517 | } |
| 1518 | } |
| 1519 | if (PL_in_eval) { |
| 1520 | PL_restartop = die_where(message, msglen); |
| 1521 | JMPENV_JUMP(3); |
| 1522 | } |
| 1523 | { |
| 1524 | PerlIO *serr = Perl_error_log; |
| 1525 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
| 1526 | (void)PerlIO_flush(serr); |
| 1527 | } |
| 1528 | my_failure_exit(); |
| 1529 | |
| 1530 | } |
| 1531 | else { |
| 1532 | if (PL_warnhook) { |
| 1533 | /* sv_2cv might call Perl_warn() */ |
| 1534 | SV *oldwarnhook = PL_warnhook; |
| 1535 | ENTER; |
| 1536 | SAVESPTR(PL_warnhook); |
| 1537 | PL_warnhook = Nullsv; |
| 1538 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
| 1539 | LEAVE; |
| 1540 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1541 | dSP; |
| 1542 | SV *msg; |
| 1543 | |
| 1544 | ENTER; |
| 1545 | save_re_context(); |
| 1546 | msg = newSVpvn(message, msglen); |
| 1547 | SvREADONLY_on(msg); |
| 1548 | SAVEFREESV(msg); |
| 1549 | |
| 1550 | PUSHSTACKi(PERLSI_WARNHOOK); |
| 1551 | PUSHMARK(sp); |
| 1552 | XPUSHs(msg); |
| 1553 | PUTBACK; |
| 1554 | call_sv((SV*)cv, G_DISCARD); |
| 1555 | POPSTACK; |
| 1556 | LEAVE; |
| 1557 | return; |
| 1558 | } |
| 1559 | } |
| 1560 | { |
| 1561 | PerlIO *serr = Perl_error_log; |
| 1562 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
| 1563 | #ifdef LEAKTEST |
| 1564 | DEBUG_L(*message == '!' |
| 1565 | ? (xstat(message[1]=='!' |
| 1566 | ? (message[2]=='!' ? 2 : 1) |
| 1567 | : 0) |
| 1568 | , 0) |
| 1569 | : 0); |
| 1570 | #endif |
| 1571 | (void)PerlIO_flush(serr); |
| 1572 | } |
| 1573 | } |
| 1574 | } |
| 1575 | |
| 1576 | /* since we've already done strlen() for both nam and val |
| 1577 | * we can use that info to make things faster than |
| 1578 | * sprintf(s, "%s=%s", nam, val) |
| 1579 | */ |
| 1580 | #define my_setenv_format(s, nam, nlen, val, vlen) \ |
| 1581 | Copy(nam, s, nlen, char); \ |
| 1582 | *(s+nlen) = '='; \ |
| 1583 | Copy(val, s+(nlen+1), vlen, char); \ |
| 1584 | *(s+(nlen+1+vlen)) = '\0' |
| 1585 | |
| 1586 | #ifdef USE_ENVIRON_ARRAY |
| 1587 | /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */ |
| 1588 | #if !defined(WIN32) && !defined(NETWARE) |
| 1589 | void |
| 1590 | Perl_my_setenv(pTHX_ char *nam, char *val) |
| 1591 | { |
| 1592 | #ifndef PERL_USE_SAFE_PUTENV |
| 1593 | /* most putenv()s leak, so we manipulate environ directly */ |
| 1594 | register I32 i=setenv_getix(nam); /* where does it go? */ |
| 1595 | int nlen, vlen; |
| 1596 | |
| 1597 | if (environ == PL_origenviron) { /* need we copy environment? */ |
| 1598 | I32 j; |
| 1599 | I32 max; |
| 1600 | char **tmpenv; |
| 1601 | |
| 1602 | /*SUPPRESS 530*/ |
| 1603 | for (max = i; environ[max]; max++) ; |
| 1604 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
| 1605 | for (j=0; j<max; j++) { /* copy environment */ |
| 1606 | int len = strlen(environ[j]); |
| 1607 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); |
| 1608 | Copy(environ[j], tmpenv[j], len+1, char); |
| 1609 | } |
| 1610 | tmpenv[max] = Nullch; |
| 1611 | environ = tmpenv; /* tell exec where it is now */ |
| 1612 | } |
| 1613 | if (!val) { |
| 1614 | safesysfree(environ[i]); |
| 1615 | while (environ[i]) { |
| 1616 | environ[i] = environ[i+1]; |
| 1617 | i++; |
| 1618 | } |
| 1619 | return; |
| 1620 | } |
| 1621 | if (!environ[i]) { /* does not exist yet */ |
| 1622 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
| 1623 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
| 1624 | } |
| 1625 | else |
| 1626 | safesysfree(environ[i]); |
| 1627 | nlen = strlen(nam); |
| 1628 | vlen = strlen(val); |
| 1629 | |
| 1630 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); |
| 1631 | /* all that work just for this */ |
| 1632 | my_setenv_format(environ[i], nam, nlen, val, vlen); |
| 1633 | |
| 1634 | #else /* PERL_USE_SAFE_PUTENV */ |
| 1635 | # if defined(__CYGWIN__) |
| 1636 | setenv(nam, val, 1); |
| 1637 | # else |
| 1638 | char *new_env; |
| 1639 | int nlen = strlen(nam), vlen; |
| 1640 | if (!val) { |
| 1641 | val = ""; |
| 1642 | } |
| 1643 | vlen = strlen(val); |
| 1644 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); |
| 1645 | /* all that work just for this */ |
| 1646 | my_setenv_format(new_env, nam, nlen, val, vlen); |
| 1647 | (void)putenv(new_env); |
| 1648 | # endif /* __CYGWIN__ */ |
| 1649 | #endif /* PERL_USE_SAFE_PUTENV */ |
| 1650 | } |
| 1651 | |
| 1652 | #else /* WIN32 || NETWARE */ |
| 1653 | |
| 1654 | void |
| 1655 | Perl_my_setenv(pTHX_ char *nam,char *val) |
| 1656 | { |
| 1657 | register char *envstr; |
| 1658 | int nlen = strlen(nam), vlen; |
| 1659 | |
| 1660 | if (!val) { |
| 1661 | val = ""; |
| 1662 | } |
| 1663 | vlen = strlen(val); |
| 1664 | New(904, envstr, nlen+vlen+2, char); |
| 1665 | my_setenv_format(envstr, nam, nlen, val, vlen); |
| 1666 | (void)PerlEnv_putenv(envstr); |
| 1667 | Safefree(envstr); |
| 1668 | } |
| 1669 | |
| 1670 | #endif /* WIN32 || NETWARE */ |
| 1671 | |
| 1672 | I32 |
| 1673 | Perl_setenv_getix(pTHX_ char *nam) |
| 1674 | { |
| 1675 | register I32 i, len = strlen(nam); |
| 1676 | |
| 1677 | for (i = 0; environ[i]; i++) { |
| 1678 | if ( |
| 1679 | #ifdef WIN32 |
| 1680 | strnicmp(environ[i],nam,len) == 0 |
| 1681 | #else |
| 1682 | strnEQ(environ[i],nam,len) |
| 1683 | #endif |
| 1684 | && environ[i][len] == '=') |
| 1685 | break; /* strnEQ must come first to avoid */ |
| 1686 | } /* potential SEGV's */ |
| 1687 | return i; |
| 1688 | } |
| 1689 | |
| 1690 | #endif /* !VMS && !EPOC*/ |
| 1691 | |
| 1692 | #ifdef UNLINK_ALL_VERSIONS |
| 1693 | I32 |
| 1694 | Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ |
| 1695 | { |
| 1696 | I32 i; |
| 1697 | |
| 1698 | for (i = 0; PerlLIO_unlink(f) >= 0; i++) ; |
| 1699 | return i ? 0 : -1; |
| 1700 | } |
| 1701 | #endif |
| 1702 | |
| 1703 | /* this is a drop-in replacement for bcopy() */ |
| 1704 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
| 1705 | char * |
| 1706 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
| 1707 | { |
| 1708 | char *retval = to; |
| 1709 | |
| 1710 | if (from - to >= 0) { |
| 1711 | while (len--) |
| 1712 | *to++ = *from++; |
| 1713 | } |
| 1714 | else { |
| 1715 | to += len; |
| 1716 | from += len; |
| 1717 | while (len--) |
| 1718 | *(--to) = *(--from); |
| 1719 | } |
| 1720 | return retval; |
| 1721 | } |
| 1722 | #endif |
| 1723 | |
| 1724 | /* this is a drop-in replacement for memset() */ |
| 1725 | #ifndef HAS_MEMSET |
| 1726 | void * |
| 1727 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
| 1728 | { |
| 1729 | char *retval = loc; |
| 1730 | |
| 1731 | while (len--) |
| 1732 | *loc++ = ch; |
| 1733 | return retval; |
| 1734 | } |
| 1735 | #endif |
| 1736 | |
| 1737 | /* this is a drop-in replacement for bzero() */ |
| 1738 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
| 1739 | char * |
| 1740 | Perl_my_bzero(register char *loc, register I32 len) |
| 1741 | { |
| 1742 | char *retval = loc; |
| 1743 | |
| 1744 | while (len--) |
| 1745 | *loc++ = 0; |
| 1746 | return retval; |
| 1747 | } |
| 1748 | #endif |
| 1749 | |
| 1750 | /* this is a drop-in replacement for memcmp() */ |
| 1751 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
| 1752 | I32 |
| 1753 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
| 1754 | { |
| 1755 | register U8 *a = (U8 *)s1; |
| 1756 | register U8 *b = (U8 *)s2; |
| 1757 | register I32 tmp; |
| 1758 | |
| 1759 | while (len--) { |
| 1760 | if (tmp = *a++ - *b++) |
| 1761 | return tmp; |
| 1762 | } |
| 1763 | return 0; |
| 1764 | } |
| 1765 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
| 1766 | |
| 1767 | #ifndef HAS_VPRINTF |
| 1768 | |
| 1769 | #ifdef USE_CHAR_VSPRINTF |
| 1770 | char * |
| 1771 | #else |
| 1772 | int |
| 1773 | #endif |
| 1774 | vsprintf(char *dest, const char *pat, char *args) |
| 1775 | { |
| 1776 | FILE fakebuf; |
| 1777 | |
| 1778 | fakebuf._ptr = dest; |
| 1779 | fakebuf._cnt = 32767; |
| 1780 | #ifndef _IOSTRG |
| 1781 | #define _IOSTRG 0 |
| 1782 | #endif |
| 1783 | fakebuf._flag = _IOWRT|_IOSTRG; |
| 1784 | _doprnt(pat, args, &fakebuf); /* what a kludge */ |
| 1785 | (void)putc('\0', &fakebuf); |
| 1786 | #ifdef USE_CHAR_VSPRINTF |
| 1787 | return(dest); |
| 1788 | #else |
| 1789 | return 0; /* perl doesn't use return value */ |
| 1790 | #endif |
| 1791 | } |
| 1792 | |
| 1793 | #endif /* HAS_VPRINTF */ |
| 1794 | |
| 1795 | #ifdef MYSWAP |
| 1796 | #if BYTEORDER != 0x4321 |
| 1797 | short |
| 1798 | Perl_my_swap(pTHX_ short s) |
| 1799 | { |
| 1800 | #if (BYTEORDER & 1) == 0 |
| 1801 | short result; |
| 1802 | |
| 1803 | result = ((s & 255) << 8) + ((s >> 8) & 255); |
| 1804 | return result; |
| 1805 | #else |
| 1806 | return s; |
| 1807 | #endif |
| 1808 | } |
| 1809 | |
| 1810 | long |
| 1811 | Perl_my_htonl(pTHX_ long l) |
| 1812 | { |
| 1813 | union { |
| 1814 | long result; |
| 1815 | char c[sizeof(long)]; |
| 1816 | } u; |
| 1817 | |
| 1818 | #if BYTEORDER == 0x1234 |
| 1819 | u.c[0] = (l >> 24) & 255; |
| 1820 | u.c[1] = (l >> 16) & 255; |
| 1821 | u.c[2] = (l >> 8) & 255; |
| 1822 | u.c[3] = l & 255; |
| 1823 | return u.result; |
| 1824 | #else |
| 1825 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
| 1826 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
| 1827 | #else |
| 1828 | register I32 o; |
| 1829 | register I32 s; |
| 1830 | |
| 1831 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
| 1832 | u.c[o & 0xf] = (l >> s) & 255; |
| 1833 | } |
| 1834 | return u.result; |
| 1835 | #endif |
| 1836 | #endif |
| 1837 | } |
| 1838 | |
| 1839 | long |
| 1840 | Perl_my_ntohl(pTHX_ long l) |
| 1841 | { |
| 1842 | union { |
| 1843 | long l; |
| 1844 | char c[sizeof(long)]; |
| 1845 | } u; |
| 1846 | |
| 1847 | #if BYTEORDER == 0x1234 |
| 1848 | u.c[0] = (l >> 24) & 255; |
| 1849 | u.c[1] = (l >> 16) & 255; |
| 1850 | u.c[2] = (l >> 8) & 255; |
| 1851 | u.c[3] = l & 255; |
| 1852 | return u.l; |
| 1853 | #else |
| 1854 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
| 1855 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
| 1856 | #else |
| 1857 | register I32 o; |
| 1858 | register I32 s; |
| 1859 | |
| 1860 | u.l = l; |
| 1861 | l = 0; |
| 1862 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
| 1863 | l |= (u.c[o & 0xf] & 255) << s; |
| 1864 | } |
| 1865 | return l; |
| 1866 | #endif |
| 1867 | #endif |
| 1868 | } |
| 1869 | |
| 1870 | #endif /* BYTEORDER != 0x4321 */ |
| 1871 | #endif /* MYSWAP */ |
| 1872 | |
| 1873 | /* |
| 1874 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. |
| 1875 | * If these functions are defined, |
| 1876 | * the BYTEORDER is neither 0x1234 nor 0x4321. |
| 1877 | * However, this is not assumed. |
| 1878 | * -DWS |
| 1879 | */ |
| 1880 | |
| 1881 | #define HTOV(name,type) \ |
| 1882 | type \ |
| 1883 | name (register type n) \ |
| 1884 | { \ |
| 1885 | union { \ |
| 1886 | type value; \ |
| 1887 | char c[sizeof(type)]; \ |
| 1888 | } u; \ |
| 1889 | register I32 i; \ |
| 1890 | register I32 s; \ |
| 1891 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
| 1892 | u.c[i] = (n >> s) & 0xFF; \ |
| 1893 | } \ |
| 1894 | return u.value; \ |
| 1895 | } |
| 1896 | |
| 1897 | #define VTOH(name,type) \ |
| 1898 | type \ |
| 1899 | name (register type n) \ |
| 1900 | { \ |
| 1901 | union { \ |
| 1902 | type value; \ |
| 1903 | char c[sizeof(type)]; \ |
| 1904 | } u; \ |
| 1905 | register I32 i; \ |
| 1906 | register I32 s; \ |
| 1907 | u.value = n; \ |
| 1908 | n = 0; \ |
| 1909 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
| 1910 | n += (u.c[i] & 0xFF) << s; \ |
| 1911 | } \ |
| 1912 | return n; \ |
| 1913 | } |
| 1914 | |
| 1915 | #if defined(HAS_HTOVS) && !defined(htovs) |
| 1916 | HTOV(htovs,short) |
| 1917 | #endif |
| 1918 | #if defined(HAS_HTOVL) && !defined(htovl) |
| 1919 | HTOV(htovl,long) |
| 1920 | #endif |
| 1921 | #if defined(HAS_VTOHS) && !defined(vtohs) |
| 1922 | VTOH(vtohs,short) |
| 1923 | #endif |
| 1924 | #if defined(HAS_VTOHL) && !defined(vtohl) |
| 1925 | VTOH(vtohl,long) |
| 1926 | #endif |
| 1927 | |
| 1928 | PerlIO * |
| 1929 | Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) |
| 1930 | { |
| 1931 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE) |
| 1932 | int p[2]; |
| 1933 | register I32 This, that; |
| 1934 | register Pid_t pid; |
| 1935 | SV *sv; |
| 1936 | I32 did_pipes = 0; |
| 1937 | int pp[2]; |
| 1938 | |
| 1939 | PERL_FLUSHALL_FOR_CHILD; |
| 1940 | This = (*mode == 'w'); |
| 1941 | that = !This; |
| 1942 | if (PL_tainting) { |
| 1943 | taint_env(); |
| 1944 | taint_proper("Insecure %s%s", "EXEC"); |
| 1945 | } |
| 1946 | if (PerlProc_pipe(p) < 0) |
| 1947 | return Nullfp; |
| 1948 | /* Try for another pipe pair for error return */ |
| 1949 | if (PerlProc_pipe(pp) >= 0) |
| 1950 | did_pipes = 1; |
| 1951 | while ((pid = PerlProc_fork()) < 0) { |
| 1952 | if (errno != EAGAIN) { |
| 1953 | PerlLIO_close(p[This]); |
| 1954 | if (did_pipes) { |
| 1955 | PerlLIO_close(pp[0]); |
| 1956 | PerlLIO_close(pp[1]); |
| 1957 | } |
| 1958 | return Nullfp; |
| 1959 | } |
| 1960 | sleep(5); |
| 1961 | } |
| 1962 | if (pid == 0) { |
| 1963 | /* Child */ |
| 1964 | #undef THIS |
| 1965 | #undef THAT |
| 1966 | #define THIS that |
| 1967 | #define THAT This |
| 1968 | /* Close parent's end of _the_ pipe */ |
| 1969 | PerlLIO_close(p[THAT]); |
| 1970 | /* Close parent's end of error status pipe (if any) */ |
| 1971 | if (did_pipes) { |
| 1972 | PerlLIO_close(pp[0]); |
| 1973 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 1974 | /* Close error pipe automatically if exec works */ |
| 1975 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); |
| 1976 | #endif |
| 1977 | } |
| 1978 | /* Now dup our end of _the_ pipe to right position */ |
| 1979 | if (p[THIS] != (*mode == 'r')) { |
| 1980 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
| 1981 | PerlLIO_close(p[THIS]); |
| 1982 | } |
| 1983 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
| 1984 | /* No automatic close - do it by hand */ |
| 1985 | # ifndef NOFILE |
| 1986 | # define NOFILE 20 |
| 1987 | # endif |
| 1988 | { |
| 1989 | int fd; |
| 1990 | |
| 1991 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { |
| 1992 | if (fd != pp[1]) |
| 1993 | PerlLIO_close(fd); |
| 1994 | } |
| 1995 | } |
| 1996 | #endif |
| 1997 | do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes); |
| 1998 | PerlProc__exit(1); |
| 1999 | #undef THIS |
| 2000 | #undef THAT |
| 2001 | } |
| 2002 | /* Parent */ |
| 2003 | do_execfree(); /* free any memory malloced by child on fork */ |
| 2004 | /* Close child's end of pipe */ |
| 2005 | PerlLIO_close(p[that]); |
| 2006 | if (did_pipes) |
| 2007 | PerlLIO_close(pp[1]); |
| 2008 | /* Keep the lower of the two fd numbers */ |
| 2009 | if (p[that] < p[This]) { |
| 2010 | PerlLIO_dup2(p[This], p[that]); |
| 2011 | PerlLIO_close(p[This]); |
| 2012 | p[This] = p[that]; |
| 2013 | } |
| 2014 | LOCK_FDPID_MUTEX; |
| 2015 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
| 2016 | UNLOCK_FDPID_MUTEX; |
| 2017 | (void)SvUPGRADE(sv,SVt_IV); |
| 2018 | SvIVX(sv) = pid; |
| 2019 | PL_forkprocess = pid; |
| 2020 | /* If we managed to get status pipe check for exec fail */ |
| 2021 | if (did_pipes && pid > 0) { |
| 2022 | int errkid; |
| 2023 | int n = 0, n1; |
| 2024 | |
| 2025 | while (n < sizeof(int)) { |
| 2026 | n1 = PerlLIO_read(pp[0], |
| 2027 | (void*)(((char*)&errkid)+n), |
| 2028 | (sizeof(int)) - n); |
| 2029 | if (n1 <= 0) |
| 2030 | break; |
| 2031 | n += n1; |
| 2032 | } |
| 2033 | PerlLIO_close(pp[0]); |
| 2034 | did_pipes = 0; |
| 2035 | if (n) { /* Error */ |
| 2036 | int pid2, status; |
| 2037 | PerlLIO_close(p[This]); |
| 2038 | if (n != sizeof(int)) |
| 2039 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
| 2040 | do { |
| 2041 | pid2 = wait4pid(pid, &status, 0); |
| 2042 | } while (pid2 == -1 && errno == EINTR); |
| 2043 | errno = errkid; /* Propagate errno from kid */ |
| 2044 | return Nullfp; |
| 2045 | } |
| 2046 | } |
| 2047 | if (did_pipes) |
| 2048 | PerlLIO_close(pp[0]); |
| 2049 | return PerlIO_fdopen(p[This], mode); |
| 2050 | #else |
| 2051 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
| 2052 | return (PerlIO *) NULL; |
| 2053 | #endif |
| 2054 | } |
| 2055 | |
| 2056 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
| 2057 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
| 2058 | PerlIO * |
| 2059 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
| 2060 | { |
| 2061 | int p[2]; |
| 2062 | register I32 This, that; |
| 2063 | register Pid_t pid; |
| 2064 | SV *sv; |
| 2065 | I32 doexec = strNE(cmd,"-"); |
| 2066 | I32 did_pipes = 0; |
| 2067 | int pp[2]; |
| 2068 | |
| 2069 | PERL_FLUSHALL_FOR_CHILD; |
| 2070 | #ifdef OS2 |
| 2071 | if (doexec) { |
| 2072 | return my_syspopen(aTHX_ cmd,mode); |
| 2073 | } |
| 2074 | #endif |
| 2075 | This = (*mode == 'w'); |
| 2076 | that = !This; |
| 2077 | if (doexec && PL_tainting) { |
| 2078 | taint_env(); |
| 2079 | taint_proper("Insecure %s%s", "EXEC"); |
| 2080 | } |
| 2081 | if (PerlProc_pipe(p) < 0) |
| 2082 | return Nullfp; |
| 2083 | if (doexec && PerlProc_pipe(pp) >= 0) |
| 2084 | did_pipes = 1; |
| 2085 | while ((pid = PerlProc_fork()) < 0) { |
| 2086 | if (errno != EAGAIN) { |
| 2087 | PerlLIO_close(p[This]); |
| 2088 | if (did_pipes) { |
| 2089 | PerlLIO_close(pp[0]); |
| 2090 | PerlLIO_close(pp[1]); |
| 2091 | } |
| 2092 | if (!doexec) |
| 2093 | Perl_croak(aTHX_ "Can't fork"); |
| 2094 | return Nullfp; |
| 2095 | } |
| 2096 | sleep(5); |
| 2097 | } |
| 2098 | if (pid == 0) { |
| 2099 | GV* tmpgv; |
| 2100 | |
| 2101 | #undef THIS |
| 2102 | #undef THAT |
| 2103 | #define THIS that |
| 2104 | #define THAT This |
| 2105 | PerlLIO_close(p[THAT]); |
| 2106 | if (did_pipes) { |
| 2107 | PerlLIO_close(pp[0]); |
| 2108 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2109 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); |
| 2110 | #endif |
| 2111 | } |
| 2112 | if (p[THIS] != (*mode == 'r')) { |
| 2113 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
| 2114 | PerlLIO_close(p[THIS]); |
| 2115 | } |
| 2116 | #ifndef OS2 |
| 2117 | if (doexec) { |
| 2118 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
| 2119 | int fd; |
| 2120 | |
| 2121 | #ifndef NOFILE |
| 2122 | #define NOFILE 20 |
| 2123 | #endif |
| 2124 | { |
| 2125 | int fd; |
| 2126 | |
| 2127 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) |
| 2128 | if (fd != pp[1]) |
| 2129 | PerlLIO_close(fd); |
| 2130 | } |
| 2131 | #endif |
| 2132 | /* may or may not use the shell */ |
| 2133 | do_exec3(cmd, pp[1], did_pipes); |
| 2134 | PerlProc__exit(1); |
| 2135 | } |
| 2136 | #endif /* defined OS2 */ |
| 2137 | /*SUPPRESS 560*/ |
| 2138 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) { |
| 2139 | SvREADONLY_off(GvSV(tmpgv)); |
| 2140 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
| 2141 | SvREADONLY_on(GvSV(tmpgv)); |
| 2142 | } |
| 2143 | PL_forkprocess = 0; |
| 2144 | hv_clear(PL_pidstatus); /* we have no children */ |
| 2145 | return Nullfp; |
| 2146 | #undef THIS |
| 2147 | #undef THAT |
| 2148 | } |
| 2149 | do_execfree(); /* free any memory malloced by child on fork */ |
| 2150 | PerlLIO_close(p[that]); |
| 2151 | if (did_pipes) |
| 2152 | PerlLIO_close(pp[1]); |
| 2153 | if (p[that] < p[This]) { |
| 2154 | PerlLIO_dup2(p[This], p[that]); |
| 2155 | PerlLIO_close(p[This]); |
| 2156 | p[This] = p[that]; |
| 2157 | } |
| 2158 | LOCK_FDPID_MUTEX; |
| 2159 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
| 2160 | UNLOCK_FDPID_MUTEX; |
| 2161 | (void)SvUPGRADE(sv,SVt_IV); |
| 2162 | SvIVX(sv) = pid; |
| 2163 | PL_forkprocess = pid; |
| 2164 | if (did_pipes && pid > 0) { |
| 2165 | int errkid; |
| 2166 | int n = 0, n1; |
| 2167 | |
| 2168 | while (n < sizeof(int)) { |
| 2169 | n1 = PerlLIO_read(pp[0], |
| 2170 | (void*)(((char*)&errkid)+n), |
| 2171 | (sizeof(int)) - n); |
| 2172 | if (n1 <= 0) |
| 2173 | break; |
| 2174 | n += n1; |
| 2175 | } |
| 2176 | PerlLIO_close(pp[0]); |
| 2177 | did_pipes = 0; |
| 2178 | if (n) { /* Error */ |
| 2179 | int pid2, status; |
| 2180 | PerlLIO_close(p[This]); |
| 2181 | if (n != sizeof(int)) |
| 2182 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
| 2183 | do { |
| 2184 | pid2 = wait4pid(pid, &status, 0); |
| 2185 | } while (pid2 == -1 && errno == EINTR); |
| 2186 | errno = errkid; /* Propagate errno from kid */ |
| 2187 | return Nullfp; |
| 2188 | } |
| 2189 | } |
| 2190 | if (did_pipes) |
| 2191 | PerlLIO_close(pp[0]); |
| 2192 | return PerlIO_fdopen(p[This], mode); |
| 2193 | } |
| 2194 | #else |
| 2195 | #if defined(atarist) |
| 2196 | FILE *popen(); |
| 2197 | PerlIO * |
| 2198 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
| 2199 | { |
| 2200 | PERL_FLUSHALL_FOR_CHILD; |
| 2201 | /* Call system's popen() to get a FILE *, then import it. |
| 2202 | used 0 for 2nd parameter to PerlIO_importFILE; |
| 2203 | apparently not used |
| 2204 | */ |
| 2205 | return PerlIO_importFILE(popen(cmd, mode), 0); |
| 2206 | } |
| 2207 | #else |
| 2208 | #if defined(DJGPP) |
| 2209 | FILE *djgpp_popen(); |
| 2210 | PerlIO * |
| 2211 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
| 2212 | { |
| 2213 | PERL_FLUSHALL_FOR_CHILD; |
| 2214 | /* Call system's popen() to get a FILE *, then import it. |
| 2215 | used 0 for 2nd parameter to PerlIO_importFILE; |
| 2216 | apparently not used |
| 2217 | */ |
| 2218 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); |
| 2219 | } |
| 2220 | #endif |
| 2221 | #endif |
| 2222 | |
| 2223 | #endif /* !DOSISH */ |
| 2224 | |
| 2225 | /* this is called in parent before the fork() */ |
| 2226 | void |
| 2227 | Perl_atfork_lock(void) |
| 2228 | { |
| 2229 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 2230 | /* locks must be held in locking order (if any) */ |
| 2231 | # ifdef MYMALLOC |
| 2232 | MUTEX_LOCK(&PL_malloc_mutex); |
| 2233 | # endif |
| 2234 | OP_REFCNT_LOCK; |
| 2235 | #endif |
| 2236 | } |
| 2237 | |
| 2238 | /* this is called in both parent and child after the fork() */ |
| 2239 | void |
| 2240 | Perl_atfork_unlock(void) |
| 2241 | { |
| 2242 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 2243 | /* locks must be released in same order as in atfork_lock() */ |
| 2244 | # ifdef MYMALLOC |
| 2245 | MUTEX_UNLOCK(&PL_malloc_mutex); |
| 2246 | # endif |
| 2247 | OP_REFCNT_UNLOCK; |
| 2248 | #endif |
| 2249 | } |
| 2250 | |
| 2251 | Pid_t |
| 2252 | Perl_my_fork(void) |
| 2253 | { |
| 2254 | #if defined(HAS_FORK) |
| 2255 | Pid_t pid; |
| 2256 | #if (defined(USE_5005THREADS) || defined(USE_ITHREADS)) && !defined(HAS_PTHREAD_ATFORK) |
| 2257 | atfork_lock(); |
| 2258 | pid = fork(); |
| 2259 | atfork_unlock(); |
| 2260 | #else |
| 2261 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() |
| 2262 | * handlers elsewhere in the code */ |
| 2263 | pid = fork(); |
| 2264 | #endif |
| 2265 | return pid; |
| 2266 | #else |
| 2267 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ |
| 2268 | Perl_croak_nocontext("fork() not available"); |
| 2269 | return 0; |
| 2270 | #endif /* HAS_FORK */ |
| 2271 | } |
| 2272 | |
| 2273 | #ifdef DUMP_FDS |
| 2274 | void |
| 2275 | Perl_dump_fds(pTHX_ char *s) |
| 2276 | { |
| 2277 | int fd; |
| 2278 | struct stat tmpstatbuf; |
| 2279 | |
| 2280 | PerlIO_printf(Perl_debug_log,"%s", s); |
| 2281 | for (fd = 0; fd < 32; fd++) { |
| 2282 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
| 2283 | PerlIO_printf(Perl_debug_log," %d",fd); |
| 2284 | } |
| 2285 | PerlIO_printf(Perl_debug_log,"\n"); |
| 2286 | } |
| 2287 | #endif /* DUMP_FDS */ |
| 2288 | |
| 2289 | #ifndef HAS_DUP2 |
| 2290 | int |
| 2291 | dup2(int oldfd, int newfd) |
| 2292 | { |
| 2293 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
| 2294 | if (oldfd == newfd) |
| 2295 | return oldfd; |
| 2296 | PerlLIO_close(newfd); |
| 2297 | return fcntl(oldfd, F_DUPFD, newfd); |
| 2298 | #else |
| 2299 | #define DUP2_MAX_FDS 256 |
| 2300 | int fdtmp[DUP2_MAX_FDS]; |
| 2301 | I32 fdx = 0; |
| 2302 | int fd; |
| 2303 | |
| 2304 | if (oldfd == newfd) |
| 2305 | return oldfd; |
| 2306 | PerlLIO_close(newfd); |
| 2307 | /* good enough for low fd's... */ |
| 2308 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
| 2309 | if (fdx >= DUP2_MAX_FDS) { |
| 2310 | PerlLIO_close(fd); |
| 2311 | fd = -1; |
| 2312 | break; |
| 2313 | } |
| 2314 | fdtmp[fdx++] = fd; |
| 2315 | } |
| 2316 | while (fdx > 0) |
| 2317 | PerlLIO_close(fdtmp[--fdx]); |
| 2318 | return fd; |
| 2319 | #endif |
| 2320 | } |
| 2321 | #endif |
| 2322 | |
| 2323 | #ifndef PERL_MICRO |
| 2324 | #ifdef HAS_SIGACTION |
| 2325 | |
| 2326 | Sighandler_t |
| 2327 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
| 2328 | { |
| 2329 | struct sigaction act, oact; |
| 2330 | |
| 2331 | act.sa_handler = handler; |
| 2332 | sigemptyset(&act.sa_mask); |
| 2333 | act.sa_flags = 0; |
| 2334 | #ifdef SA_RESTART |
| 2335 | #if defined(PERL_OLD_SIGNALS) |
| 2336 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
| 2337 | #endif |
| 2338 | #endif |
| 2339 | #ifdef SA_NOCLDWAIT |
| 2340 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
| 2341 | act.sa_flags |= SA_NOCLDWAIT; |
| 2342 | #endif |
| 2343 | if (sigaction(signo, &act, &oact) == -1) |
| 2344 | return SIG_ERR; |
| 2345 | else |
| 2346 | return oact.sa_handler; |
| 2347 | } |
| 2348 | |
| 2349 | Sighandler_t |
| 2350 | Perl_rsignal_state(pTHX_ int signo) |
| 2351 | { |
| 2352 | struct sigaction oact; |
| 2353 | |
| 2354 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) |
| 2355 | return SIG_ERR; |
| 2356 | else |
| 2357 | return oact.sa_handler; |
| 2358 | } |
| 2359 | |
| 2360 | int |
| 2361 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
| 2362 | { |
| 2363 | struct sigaction act; |
| 2364 | |
| 2365 | act.sa_handler = handler; |
| 2366 | sigemptyset(&act.sa_mask); |
| 2367 | act.sa_flags = 0; |
| 2368 | #ifdef SA_RESTART |
| 2369 | #if defined(PERL_OLD_SIGNALS) |
| 2370 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
| 2371 | #endif |
| 2372 | #endif |
| 2373 | #ifdef SA_NOCLDWAIT |
| 2374 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
| 2375 | act.sa_flags |= SA_NOCLDWAIT; |
| 2376 | #endif |
| 2377 | return sigaction(signo, &act, save); |
| 2378 | } |
| 2379 | |
| 2380 | int |
| 2381 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
| 2382 | { |
| 2383 | return sigaction(signo, save, (struct sigaction *)NULL); |
| 2384 | } |
| 2385 | |
| 2386 | #else /* !HAS_SIGACTION */ |
| 2387 | |
| 2388 | Sighandler_t |
| 2389 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
| 2390 | { |
| 2391 | return PerlProc_signal(signo, handler); |
| 2392 | } |
| 2393 | |
| 2394 | static int sig_trapped; /* XXX signals are process-wide anyway, so we |
| 2395 | ignore the implications of this for threading */ |
| 2396 | |
| 2397 | static |
| 2398 | Signal_t |
| 2399 | sig_trap(int signo) |
| 2400 | { |
| 2401 | sig_trapped++; |
| 2402 | } |
| 2403 | |
| 2404 | Sighandler_t |
| 2405 | Perl_rsignal_state(pTHX_ int signo) |
| 2406 | { |
| 2407 | Sighandler_t oldsig; |
| 2408 | |
| 2409 | sig_trapped = 0; |
| 2410 | oldsig = PerlProc_signal(signo, sig_trap); |
| 2411 | PerlProc_signal(signo, oldsig); |
| 2412 | if (sig_trapped) |
| 2413 | PerlProc_kill(PerlProc_getpid(), signo); |
| 2414 | return oldsig; |
| 2415 | } |
| 2416 | |
| 2417 | int |
| 2418 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
| 2419 | { |
| 2420 | *save = PerlProc_signal(signo, handler); |
| 2421 | return (*save == SIG_ERR) ? -1 : 0; |
| 2422 | } |
| 2423 | |
| 2424 | int |
| 2425 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
| 2426 | { |
| 2427 | return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0; |
| 2428 | } |
| 2429 | |
| 2430 | #endif /* !HAS_SIGACTION */ |
| 2431 | #endif /* !PERL_MICRO */ |
| 2432 | |
| 2433 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
| 2434 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
| 2435 | I32 |
| 2436 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 2437 | { |
| 2438 | Sigsave_t hstat, istat, qstat; |
| 2439 | int status; |
| 2440 | SV **svp; |
| 2441 | Pid_t pid; |
| 2442 | Pid_t pid2; |
| 2443 | bool close_failed; |
| 2444 | int saved_errno = 0; |
| 2445 | #ifdef VMS |
| 2446 | int saved_vaxc_errno; |
| 2447 | #endif |
| 2448 | #ifdef WIN32 |
| 2449 | int saved_win32_errno; |
| 2450 | #endif |
| 2451 | |
| 2452 | LOCK_FDPID_MUTEX; |
| 2453 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
| 2454 | UNLOCK_FDPID_MUTEX; |
| 2455 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
| 2456 | SvREFCNT_dec(*svp); |
| 2457 | *svp = &PL_sv_undef; |
| 2458 | #ifdef OS2 |
| 2459 | if (pid == -1) { /* Opened by popen. */ |
| 2460 | return my_syspclose(ptr); |
| 2461 | } |
| 2462 | #endif |
| 2463 | if ((close_failed = (PerlIO_close(ptr) == EOF))) { |
| 2464 | saved_errno = errno; |
| 2465 | #ifdef VMS |
| 2466 | saved_vaxc_errno = vaxc$errno; |
| 2467 | #endif |
| 2468 | #ifdef WIN32 |
| 2469 | saved_win32_errno = GetLastError(); |
| 2470 | #endif |
| 2471 | } |
| 2472 | #ifdef UTS |
| 2473 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
| 2474 | #endif |
| 2475 | #ifndef PERL_MICRO |
| 2476 | rsignal_save(SIGHUP, SIG_IGN, &hstat); |
| 2477 | rsignal_save(SIGINT, SIG_IGN, &istat); |
| 2478 | rsignal_save(SIGQUIT, SIG_IGN, &qstat); |
| 2479 | #endif |
| 2480 | do { |
| 2481 | pid2 = wait4pid(pid, &status, 0); |
| 2482 | } while (pid2 == -1 && errno == EINTR); |
| 2483 | #ifndef PERL_MICRO |
| 2484 | rsignal_restore(SIGHUP, &hstat); |
| 2485 | rsignal_restore(SIGINT, &istat); |
| 2486 | rsignal_restore(SIGQUIT, &qstat); |
| 2487 | #endif |
| 2488 | if (close_failed) { |
| 2489 | SETERRNO(saved_errno, saved_vaxc_errno); |
| 2490 | return -1; |
| 2491 | } |
| 2492 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
| 2493 | } |
| 2494 | #endif /* !DOSISH */ |
| 2495 | |
| 2496 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL) |
| 2497 | I32 |
| 2498 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
| 2499 | { |
| 2500 | I32 result; |
| 2501 | if (!pid) |
| 2502 | return -1; |
| 2503 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) |
| 2504 | { |
| 2505 | SV *sv; |
| 2506 | SV** svp; |
| 2507 | char spid[TYPE_CHARS(int)]; |
| 2508 | |
| 2509 | if (pid > 0) { |
| 2510 | sprintf(spid, "%"IVdf, (IV)pid); |
| 2511 | svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); |
| 2512 | if (svp && *svp != &PL_sv_undef) { |
| 2513 | *statusp = SvIVX(*svp); |
| 2514 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); |
| 2515 | return pid; |
| 2516 | } |
| 2517 | } |
| 2518 | else { |
| 2519 | HE *entry; |
| 2520 | |
| 2521 | hv_iterinit(PL_pidstatus); |
| 2522 | if ((entry = hv_iternext(PL_pidstatus))) { |
| 2523 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
| 2524 | sv = hv_iterval(PL_pidstatus,entry); |
| 2525 | *statusp = SvIVX(sv); |
| 2526 | sprintf(spid, "%"IVdf, (IV)pid); |
| 2527 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); |
| 2528 | return pid; |
| 2529 | } |
| 2530 | } |
| 2531 | } |
| 2532 | #endif |
| 2533 | #ifdef HAS_WAITPID |
| 2534 | # ifdef HAS_WAITPID_RUNTIME |
| 2535 | if (!HAS_WAITPID_RUNTIME) |
| 2536 | goto hard_way; |
| 2537 | # endif |
| 2538 | result = PerlProc_waitpid(pid,statusp,flags); |
| 2539 | goto finish; |
| 2540 | #endif |
| 2541 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) |
| 2542 | result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
| 2543 | goto finish; |
| 2544 | #endif |
| 2545 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) |
| 2546 | hard_way: |
| 2547 | { |
| 2548 | if (flags) |
| 2549 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
| 2550 | else { |
| 2551 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
| 2552 | pidgone(result,*statusp); |
| 2553 | if (result < 0) |
| 2554 | *statusp = -1; |
| 2555 | } |
| 2556 | } |
| 2557 | #endif |
| 2558 | finish: |
| 2559 | if (result < 0 && errno == EINTR) { |
| 2560 | PERL_ASYNC_CHECK(); |
| 2561 | } |
| 2562 | return result; |
| 2563 | } |
| 2564 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
| 2565 | |
| 2566 | void |
| 2567 | /*SUPPRESS 590*/ |
| 2568 | Perl_pidgone(pTHX_ Pid_t pid, int status) |
| 2569 | { |
| 2570 | register SV *sv; |
| 2571 | char spid[TYPE_CHARS(int)]; |
| 2572 | |
| 2573 | sprintf(spid, "%"IVdf, (IV)pid); |
| 2574 | sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); |
| 2575 | (void)SvUPGRADE(sv,SVt_IV); |
| 2576 | SvIVX(sv) = status; |
| 2577 | return; |
| 2578 | } |
| 2579 | |
| 2580 | #if defined(atarist) || defined(OS2) |
| 2581 | int pclose(); |
| 2582 | #ifdef HAS_FORK |
| 2583 | int /* Cannot prototype with I32 |
| 2584 | in os2ish.h. */ |
| 2585 | my_syspclose(PerlIO *ptr) |
| 2586 | #else |
| 2587 | I32 |
| 2588 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 2589 | #endif |
| 2590 | { |
| 2591 | /* Needs work for PerlIO ! */ |
| 2592 | FILE *f = PerlIO_findFILE(ptr); |
| 2593 | I32 result = pclose(f); |
| 2594 | PerlIO_releaseFILE(ptr,f); |
| 2595 | return result; |
| 2596 | } |
| 2597 | #endif |
| 2598 | |
| 2599 | #if defined(DJGPP) |
| 2600 | int djgpp_pclose(); |
| 2601 | I32 |
| 2602 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 2603 | { |
| 2604 | /* Needs work for PerlIO ! */ |
| 2605 | FILE *f = PerlIO_findFILE(ptr); |
| 2606 | I32 result = djgpp_pclose(f); |
| 2607 | result = (result << 8) & 0xff00; |
| 2608 | PerlIO_releaseFILE(ptr,f); |
| 2609 | return result; |
| 2610 | } |
| 2611 | #endif |
| 2612 | |
| 2613 | void |
| 2614 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
| 2615 | { |
| 2616 | register I32 todo; |
| 2617 | register const char *frombase = from; |
| 2618 | |
| 2619 | if (len == 1) { |
| 2620 | register const char c = *from; |
| 2621 | while (count-- > 0) |
| 2622 | *to++ = c; |
| 2623 | return; |
| 2624 | } |
| 2625 | while (count-- > 0) { |
| 2626 | for (todo = len; todo > 0; todo--) { |
| 2627 | *to++ = *from++; |
| 2628 | } |
| 2629 | from = frombase; |
| 2630 | } |
| 2631 | } |
| 2632 | |
| 2633 | #ifndef HAS_RENAME |
| 2634 | I32 |
| 2635 | Perl_same_dirent(pTHX_ char *a, char *b) |
| 2636 | { |
| 2637 | char *fa = strrchr(a,'/'); |
| 2638 | char *fb = strrchr(b,'/'); |
| 2639 | struct stat tmpstatbuf1; |
| 2640 | struct stat tmpstatbuf2; |
| 2641 | SV *tmpsv = sv_newmortal(); |
| 2642 | |
| 2643 | if (fa) |
| 2644 | fa++; |
| 2645 | else |
| 2646 | fa = a; |
| 2647 | if (fb) |
| 2648 | fb++; |
| 2649 | else |
| 2650 | fb = b; |
| 2651 | if (strNE(a,b)) |
| 2652 | return FALSE; |
| 2653 | if (fa == a) |
| 2654 | sv_setpv(tmpsv, "."); |
| 2655 | else |
| 2656 | sv_setpvn(tmpsv, a, fa - a); |
| 2657 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0) |
| 2658 | return FALSE; |
| 2659 | if (fb == b) |
| 2660 | sv_setpv(tmpsv, "."); |
| 2661 | else |
| 2662 | sv_setpvn(tmpsv, b, fb - b); |
| 2663 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0) |
| 2664 | return FALSE; |
| 2665 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && |
| 2666 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; |
| 2667 | } |
| 2668 | #endif /* !HAS_RENAME */ |
| 2669 | |
| 2670 | char* |
| 2671 | Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags) |
| 2672 | { |
| 2673 | char *xfound = Nullch; |
| 2674 | char *xfailed = Nullch; |
| 2675 | char tmpbuf[MAXPATHLEN]; |
| 2676 | register char *s; |
| 2677 | I32 len = 0; |
| 2678 | int retval; |
| 2679 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) |
| 2680 | # define SEARCH_EXTS ".bat", ".cmd", NULL |
| 2681 | # define MAX_EXT_LEN 4 |
| 2682 | #endif |
| 2683 | #ifdef OS2 |
| 2684 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL |
| 2685 | # define MAX_EXT_LEN 4 |
| 2686 | #endif |
| 2687 | #ifdef VMS |
| 2688 | # define SEARCH_EXTS ".pl", ".com", NULL |
| 2689 | # define MAX_EXT_LEN 4 |
| 2690 | #endif |
| 2691 | /* additional extensions to try in each dir if scriptname not found */ |
| 2692 | #ifdef SEARCH_EXTS |
| 2693 | char *exts[] = { SEARCH_EXTS }; |
| 2694 | char **ext = search_ext ? search_ext : exts; |
| 2695 | int extidx = 0, i = 0; |
| 2696 | char *curext = Nullch; |
| 2697 | #else |
| 2698 | # define MAX_EXT_LEN 0 |
| 2699 | #endif |
| 2700 | |
| 2701 | /* |
| 2702 | * If dosearch is true and if scriptname does not contain path |
| 2703 | * delimiters, search the PATH for scriptname. |
| 2704 | * |
| 2705 | * If SEARCH_EXTS is also defined, will look for each |
| 2706 | * scriptname{SEARCH_EXTS} whenever scriptname is not found |
| 2707 | * while searching the PATH. |
| 2708 | * |
| 2709 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search |
| 2710 | * proceeds as follows: |
| 2711 | * If DOSISH or VMSISH: |
| 2712 | * + look for ./scriptname{,.foo,.bar} |
| 2713 | * + search the PATH for scriptname{,.foo,.bar} |
| 2714 | * |
| 2715 | * If !DOSISH: |
| 2716 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note |
| 2717 | * this will not look in '.' if it's not in the PATH) |
| 2718 | */ |
| 2719 | tmpbuf[0] = '\0'; |
| 2720 | |
| 2721 | #ifdef VMS |
| 2722 | # ifdef ALWAYS_DEFTYPES |
| 2723 | len = strlen(scriptname); |
| 2724 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { |
| 2725 | int hasdir, idx = 0, deftypes = 1; |
| 2726 | bool seen_dot = 1; |
| 2727 | |
| 2728 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; |
| 2729 | # else |
| 2730 | if (dosearch) { |
| 2731 | int hasdir, idx = 0, deftypes = 1; |
| 2732 | bool seen_dot = 1; |
| 2733 | |
| 2734 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; |
| 2735 | # endif |
| 2736 | /* The first time through, just add SEARCH_EXTS to whatever we |
| 2737 | * already have, so we can check for default file types. */ |
| 2738 | while (deftypes || |
| 2739 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
| 2740 | { |
| 2741 | if (deftypes) { |
| 2742 | deftypes = 0; |
| 2743 | *tmpbuf = '\0'; |
| 2744 | } |
| 2745 | if ((strlen(tmpbuf) + strlen(scriptname) |
| 2746 | + MAX_EXT_LEN) >= sizeof tmpbuf) |
| 2747 | continue; /* don't search dir with too-long name */ |
| 2748 | strcat(tmpbuf, scriptname); |
| 2749 | #else /* !VMS */ |
| 2750 | |
| 2751 | #ifdef DOSISH |
| 2752 | if (strEQ(scriptname, "-")) |
| 2753 | dosearch = 0; |
| 2754 | if (dosearch) { /* Look in '.' first. */ |
| 2755 | char *cur = scriptname; |
| 2756 | #ifdef SEARCH_EXTS |
| 2757 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ |
| 2758 | while (ext[i]) |
| 2759 | if (strEQ(ext[i++],curext)) { |
| 2760 | extidx = -1; /* already has an ext */ |
| 2761 | break; |
| 2762 | } |
| 2763 | do { |
| 2764 | #endif |
| 2765 | DEBUG_p(PerlIO_printf(Perl_debug_log, |
| 2766 | "Looking for %s\n",cur)); |
| 2767 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
| 2768 | && !S_ISDIR(PL_statbuf.st_mode)) { |
| 2769 | dosearch = 0; |
| 2770 | scriptname = cur; |
| 2771 | #ifdef SEARCH_EXTS |
| 2772 | break; |
| 2773 | #endif |
| 2774 | } |
| 2775 | #ifdef SEARCH_EXTS |
| 2776 | if (cur == scriptname) { |
| 2777 | len = strlen(scriptname); |
| 2778 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
| 2779 | break; |
| 2780 | cur = strcpy(tmpbuf, scriptname); |
| 2781 | } |
| 2782 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ |
| 2783 | && strcpy(tmpbuf+len, ext[extidx++])); |
| 2784 | #endif |
| 2785 | } |
| 2786 | #endif |
| 2787 | |
| 2788 | #ifdef MACOS_TRADITIONAL |
| 2789 | if (dosearch && !strchr(scriptname, ':') && |
| 2790 | (s = PerlEnv_getenv("Commands"))) |
| 2791 | #else |
| 2792 | if (dosearch && !strchr(scriptname, '/') |
| 2793 | #ifdef DOSISH |
| 2794 | && !strchr(scriptname, '\\') |
| 2795 | #endif |
| 2796 | && (s = PerlEnv_getenv("PATH"))) |
| 2797 | #endif |
| 2798 | { |
| 2799 | bool seen_dot = 0; |
| 2800 | |
| 2801 | PL_bufend = s + strlen(s); |
| 2802 | while (s < PL_bufend) { |
| 2803 | #ifdef MACOS_TRADITIONAL |
| 2804 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
| 2805 | ',', |
| 2806 | &len); |
| 2807 | #else |
| 2808 | #if defined(atarist) || defined(DOSISH) |
| 2809 | for (len = 0; *s |
| 2810 | # ifdef atarist |
| 2811 | && *s != ',' |
| 2812 | # endif |
| 2813 | && *s != ';'; len++, s++) { |
| 2814 | if (len < sizeof tmpbuf) |
| 2815 | tmpbuf[len] = *s; |
| 2816 | } |
| 2817 | if (len < sizeof tmpbuf) |
| 2818 | tmpbuf[len] = '\0'; |
| 2819 | #else /* ! (atarist || DOSISH) */ |
| 2820 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
| 2821 | ':', |
| 2822 | &len); |
| 2823 | #endif /* ! (atarist || DOSISH) */ |
| 2824 | #endif /* MACOS_TRADITIONAL */ |
| 2825 | if (s < PL_bufend) |
| 2826 | s++; |
| 2827 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
| 2828 | continue; /* don't search dir with too-long name */ |
| 2829 | #ifdef MACOS_TRADITIONAL |
| 2830 | if (len && tmpbuf[len - 1] != ':') |
| 2831 | tmpbuf[len++] = ':'; |
| 2832 | #else |
| 2833 | if (len |
| 2834 | #if defined(atarist) || defined(__MINT__) || defined(DOSISH) |
| 2835 | && tmpbuf[len - 1] != '/' |
| 2836 | && tmpbuf[len - 1] != '\\' |
| 2837 | #endif |
| 2838 | ) |
| 2839 | tmpbuf[len++] = '/'; |
| 2840 | if (len == 2 && tmpbuf[0] == '.') |
| 2841 | seen_dot = 1; |
| 2842 | #endif |
| 2843 | (void)strcpy(tmpbuf + len, scriptname); |
| 2844 | #endif /* !VMS */ |
| 2845 | |
| 2846 | #ifdef SEARCH_EXTS |
| 2847 | len = strlen(tmpbuf); |
| 2848 | if (extidx > 0) /* reset after previous loop */ |
| 2849 | extidx = 0; |
| 2850 | do { |
| 2851 | #endif |
| 2852 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
| 2853 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
| 2854 | if (S_ISDIR(PL_statbuf.st_mode)) { |
| 2855 | retval = -1; |
| 2856 | } |
| 2857 | #ifdef SEARCH_EXTS |
| 2858 | } while ( retval < 0 /* not there */ |
| 2859 | && extidx>=0 && ext[extidx] /* try an extension? */ |
| 2860 | && strcpy(tmpbuf+len, ext[extidx++]) |
| 2861 | ); |
| 2862 | #endif |
| 2863 | if (retval < 0) |
| 2864 | continue; |
| 2865 | if (S_ISREG(PL_statbuf.st_mode) |
| 2866 | && cando(S_IRUSR,TRUE,&PL_statbuf) |
| 2867 | #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL) |
| 2868 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
| 2869 | #endif |
| 2870 | ) |
| 2871 | { |
| 2872 | xfound = tmpbuf; /* bingo! */ |
| 2873 | break; |
| 2874 | } |
| 2875 | if (!xfailed) |
| 2876 | xfailed = savepv(tmpbuf); |
| 2877 | } |
| 2878 | #ifndef DOSISH |
| 2879 | if (!xfound && !seen_dot && !xfailed && |
| 2880 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
| 2881 | || S_ISDIR(PL_statbuf.st_mode))) |
| 2882 | #endif |
| 2883 | seen_dot = 1; /* Disable message. */ |
| 2884 | if (!xfound) { |
| 2885 | if (flags & 1) { /* do or die? */ |
| 2886 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
| 2887 | (xfailed ? "execute" : "find"), |
| 2888 | (xfailed ? xfailed : scriptname), |
| 2889 | (xfailed ? "" : " on PATH"), |
| 2890 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); |
| 2891 | } |
| 2892 | scriptname = Nullch; |
| 2893 | } |
| 2894 | if (xfailed) |
| 2895 | Safefree(xfailed); |
| 2896 | scriptname = xfound; |
| 2897 | } |
| 2898 | return (scriptname ? savepv(scriptname) : Nullch); |
| 2899 | } |
| 2900 | |
| 2901 | #ifndef PERL_GET_CONTEXT_DEFINED |
| 2902 | |
| 2903 | void * |
| 2904 | Perl_get_context(void) |
| 2905 | { |
| 2906 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 2907 | # ifdef OLD_PTHREADS_API |
| 2908 | pthread_addr_t t; |
| 2909 | if (pthread_getspecific(PL_thr_key, &t)) |
| 2910 | Perl_croak_nocontext("panic: pthread_getspecific"); |
| 2911 | return (void*)t; |
| 2912 | # else |
| 2913 | # ifdef I_MACH_CTHREADS |
| 2914 | return (void*)cthread_data(cthread_self()); |
| 2915 | # else |
| 2916 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
| 2917 | # endif |
| 2918 | # endif |
| 2919 | #else |
| 2920 | return (void*)NULL; |
| 2921 | #endif |
| 2922 | } |
| 2923 | |
| 2924 | void |
| 2925 | Perl_set_context(void *t) |
| 2926 | { |
| 2927 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 2928 | # ifdef I_MACH_CTHREADS |
| 2929 | cthread_set_data(cthread_self(), t); |
| 2930 | # else |
| 2931 | if (pthread_setspecific(PL_thr_key, t)) |
| 2932 | Perl_croak_nocontext("panic: pthread_setspecific"); |
| 2933 | # endif |
| 2934 | #endif |
| 2935 | } |
| 2936 | |
| 2937 | #endif /* !PERL_GET_CONTEXT_DEFINED */ |
| 2938 | |
| 2939 | #ifdef USE_5005THREADS |
| 2940 | |
| 2941 | #ifdef FAKE_THREADS |
| 2942 | /* Very simplistic scheduler for now */ |
| 2943 | void |
| 2944 | schedule(void) |
| 2945 | { |
| 2946 | thr = thr->i.next_run; |
| 2947 | } |
| 2948 | |
| 2949 | void |
| 2950 | Perl_cond_init(pTHX_ perl_cond *cp) |
| 2951 | { |
| 2952 | *cp = 0; |
| 2953 | } |
| 2954 | |
| 2955 | void |
| 2956 | Perl_cond_signal(pTHX_ perl_cond *cp) |
| 2957 | { |
| 2958 | perl_os_thread t; |
| 2959 | perl_cond cond = *cp; |
| 2960 | |
| 2961 | if (!cond) |
| 2962 | return; |
| 2963 | t = cond->thread; |
| 2964 | /* Insert t in the runnable queue just ahead of us */ |
| 2965 | t->i.next_run = thr->i.next_run; |
| 2966 | thr->i.next_run->i.prev_run = t; |
| 2967 | t->i.prev_run = thr; |
| 2968 | thr->i.next_run = t; |
| 2969 | thr->i.wait_queue = 0; |
| 2970 | /* Remove from the wait queue */ |
| 2971 | *cp = cond->next; |
| 2972 | Safefree(cond); |
| 2973 | } |
| 2974 | |
| 2975 | void |
| 2976 | Perl_cond_broadcast(pTHX_ perl_cond *cp) |
| 2977 | { |
| 2978 | perl_os_thread t; |
| 2979 | perl_cond cond, cond_next; |
| 2980 | |
| 2981 | for (cond = *cp; cond; cond = cond_next) { |
| 2982 | t = cond->thread; |
| 2983 | /* Insert t in the runnable queue just ahead of us */ |
| 2984 | t->i.next_run = thr->i.next_run; |
| 2985 | thr->i.next_run->i.prev_run = t; |
| 2986 | t->i.prev_run = thr; |
| 2987 | thr->i.next_run = t; |
| 2988 | thr->i.wait_queue = 0; |
| 2989 | /* Remove from the wait queue */ |
| 2990 | cond_next = cond->next; |
| 2991 | Safefree(cond); |
| 2992 | } |
| 2993 | *cp = 0; |
| 2994 | } |
| 2995 | |
| 2996 | void |
| 2997 | Perl_cond_wait(pTHX_ perl_cond *cp) |
| 2998 | { |
| 2999 | perl_cond cond; |
| 3000 | |
| 3001 | if (thr->i.next_run == thr) |
| 3002 | Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread"); |
| 3003 | |
| 3004 | New(666, cond, 1, struct perl_wait_queue); |
| 3005 | cond->thread = thr; |
| 3006 | cond->next = *cp; |
| 3007 | *cp = cond; |
| 3008 | thr->i.wait_queue = cond; |
| 3009 | /* Remove ourselves from runnable queue */ |
| 3010 | thr->i.next_run->i.prev_run = thr->i.prev_run; |
| 3011 | thr->i.prev_run->i.next_run = thr->i.next_run; |
| 3012 | } |
| 3013 | #endif /* FAKE_THREADS */ |
| 3014 | |
| 3015 | MAGIC * |
| 3016 | Perl_condpair_magic(pTHX_ SV *sv) |
| 3017 | { |
| 3018 | MAGIC *mg; |
| 3019 | |
| 3020 | (void)SvUPGRADE(sv, SVt_PVMG); |
| 3021 | mg = mg_find(sv, PERL_MAGIC_mutex); |
| 3022 | if (!mg) { |
| 3023 | condpair_t *cp; |
| 3024 | |
| 3025 | New(53, cp, 1, condpair_t); |
| 3026 | MUTEX_INIT(&cp->mutex); |
| 3027 | COND_INIT(&cp->owner_cond); |
| 3028 | COND_INIT(&cp->cond); |
| 3029 | cp->owner = 0; |
| 3030 | LOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
| 3031 | mg = mg_find(sv, PERL_MAGIC_mutex); |
| 3032 | if (mg) { |
| 3033 | /* someone else beat us to initialising it */ |
| 3034 | UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
| 3035 | MUTEX_DESTROY(&cp->mutex); |
| 3036 | COND_DESTROY(&cp->owner_cond); |
| 3037 | COND_DESTROY(&cp->cond); |
| 3038 | Safefree(cp); |
| 3039 | } |
| 3040 | else { |
| 3041 | sv_magic(sv, Nullsv, PERL_MAGIC_mutex, 0, 0); |
| 3042 | mg = SvMAGIC(sv); |
| 3043 | mg->mg_ptr = (char *)cp; |
| 3044 | mg->mg_len = sizeof(cp); |
| 3045 | UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */ |
| 3046 | DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log, |
| 3047 | "%p: condpair_magic %p\n", thr, sv))); |
| 3048 | } |
| 3049 | } |
| 3050 | return mg; |
| 3051 | } |
| 3052 | |
| 3053 | SV * |
| 3054 | Perl_sv_lock(pTHX_ SV *osv) |
| 3055 | { |
| 3056 | MAGIC *mg; |
| 3057 | SV *sv = osv; |
| 3058 | |
| 3059 | LOCK_SV_LOCK_MUTEX; |
| 3060 | if (SvROK(sv)) { |
| 3061 | sv = SvRV(sv); |
| 3062 | } |
| 3063 | |
| 3064 | mg = condpair_magic(sv); |
| 3065 | MUTEX_LOCK(MgMUTEXP(mg)); |
| 3066 | if (MgOWNER(mg) == thr) |
| 3067 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 3068 | else { |
| 3069 | while (MgOWNER(mg)) |
| 3070 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
| 3071 | MgOWNER(mg) = thr; |
| 3072 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 3073 | "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n", |
| 3074 | PTR2UV(thr), PTR2UV(sv))); |
| 3075 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 3076 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
| 3077 | } |
| 3078 | UNLOCK_SV_LOCK_MUTEX; |
| 3079 | return sv; |
| 3080 | } |
| 3081 | |
| 3082 | /* |
| 3083 | * Make a new perl thread structure using t as a prototype. Some of the |
| 3084 | * fields for the new thread are copied from the prototype thread, t, |
| 3085 | * so t should not be running in perl at the time this function is |
| 3086 | * called. The use by ext/Thread/Thread.xs in core perl (where t is the |
| 3087 | * thread calling new_struct_thread) clearly satisfies this constraint. |
| 3088 | */ |
| 3089 | struct perl_thread * |
| 3090 | Perl_new_struct_thread(pTHX_ struct perl_thread *t) |
| 3091 | { |
| 3092 | #if !defined(PERL_IMPLICIT_CONTEXT) |
| 3093 | struct perl_thread *thr; |
| 3094 | #endif |
| 3095 | SV *sv; |
| 3096 | SV **svp; |
| 3097 | I32 i; |
| 3098 | |
| 3099 | sv = newSVpvn("", 0); |
| 3100 | SvGROW(sv, sizeof(struct perl_thread) + 1); |
| 3101 | SvCUR_set(sv, sizeof(struct perl_thread)); |
| 3102 | thr = (Thread) SvPVX(sv); |
| 3103 | #ifdef DEBUGGING |
| 3104 | memset(thr, 0xab, sizeof(struct perl_thread)); |
| 3105 | PL_markstack = 0; |
| 3106 | PL_scopestack = 0; |
| 3107 | PL_savestack = 0; |
| 3108 | PL_retstack = 0; |
| 3109 | PL_dirty = 0; |
| 3110 | PL_localizing = 0; |
| 3111 | Zero(&PL_hv_fetch_ent_mh, 1, HE); |
| 3112 | PL_efloatbuf = (char*)NULL; |
| 3113 | PL_efloatsize = 0; |
| 3114 | #else |
| 3115 | Zero(thr, 1, struct perl_thread); |
| 3116 | #endif |
| 3117 | |
| 3118 | thr->oursv = sv; |
| 3119 | init_stacks(); |
| 3120 | |
| 3121 | PL_curcop = &PL_compiling; |
| 3122 | thr->interp = t->interp; |
| 3123 | thr->cvcache = newHV(); |
| 3124 | thr->threadsv = newAV(); |
| 3125 | thr->specific = newAV(); |
| 3126 | thr->errsv = newSVpvn("", 0); |
| 3127 | thr->flags = THRf_R_JOINABLE; |
| 3128 | thr->thr_done = 0; |
| 3129 | MUTEX_INIT(&thr->mutex); |
| 3130 | |
| 3131 | JMPENV_BOOTSTRAP; |
| 3132 | |
| 3133 | PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */ |
| 3134 | PL_restartop = 0; |
| 3135 | |
| 3136 | PL_statname = NEWSV(66,0); |
| 3137 | PL_errors = newSVpvn("", 0); |
| 3138 | PL_maxscream = -1; |
| 3139 | PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp); |
| 3140 | PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags); |
| 3141 | PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start); |
| 3142 | PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string); |
| 3143 | PL_regfree = MEMBER_TO_FPTR(Perl_pregfree); |
| 3144 | PL_regindent = 0; |
| 3145 | PL_reginterp_cnt = 0; |
| 3146 | PL_lastscream = Nullsv; |
| 3147 | PL_screamfirst = 0; |
| 3148 | PL_screamnext = 0; |
| 3149 | PL_reg_start_tmp = 0; |
| 3150 | PL_reg_start_tmpl = 0; |
| 3151 | PL_reg_poscache = Nullch; |
| 3152 | |
| 3153 | PL_peepp = MEMBER_TO_FPTR(Perl_peep); |
| 3154 | |
| 3155 | /* parent thread's data needs to be locked while we make copy */ |
| 3156 | MUTEX_LOCK(&t->mutex); |
| 3157 | |
| 3158 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
| 3159 | PL_protect = t->Tprotect; |
| 3160 | #endif |
| 3161 | |
| 3162 | PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */ |
| 3163 | PL_defstash = t->Tdefstash; /* XXX maybe these should */ |
| 3164 | PL_curstash = t->Tcurstash; /* always be set to main? */ |
| 3165 | |
| 3166 | PL_tainted = t->Ttainted; |
| 3167 | PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */ |
| 3168 | PL_rs = newSVsv(t->Trs); |
| 3169 | PL_last_in_gv = Nullgv; |
| 3170 | PL_ofs_sv = t->Tofs_sv ? SvREFCNT_inc(PL_ofs_sv) : Nullsv; |
| 3171 | PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv); |
| 3172 | PL_chopset = t->Tchopset; |
| 3173 | PL_bodytarget = newSVsv(t->Tbodytarget); |
| 3174 | PL_toptarget = newSVsv(t->Ttoptarget); |
| 3175 | if (t->Tformtarget == t->Ttoptarget) |
| 3176 | PL_formtarget = PL_toptarget; |
| 3177 | else |
| 3178 | PL_formtarget = PL_bodytarget; |
| 3179 | |
| 3180 | /* Initialise all per-thread SVs that the template thread used */ |
| 3181 | svp = AvARRAY(t->threadsv); |
| 3182 | for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) { |
| 3183 | if (*svp && *svp != &PL_sv_undef) { |
| 3184 | SV *sv = newSVsv(*svp); |
| 3185 | av_store(thr->threadsv, i, sv); |
| 3186 | sv_magic(sv, 0, PERL_MAGIC_sv, &PL_threadsv_names[i], 1); |
| 3187 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 3188 | "new_struct_thread: copied threadsv %"IVdf" %p->%p\n", |
| 3189 | (IV)i, t, thr)); |
| 3190 | } |
| 3191 | } |
| 3192 | thr->threadsvp = AvARRAY(thr->threadsv); |
| 3193 | |
| 3194 | MUTEX_LOCK(&PL_threads_mutex); |
| 3195 | PL_nthreads++; |
| 3196 | thr->tid = ++PL_threadnum; |
| 3197 | thr->next = t->next; |
| 3198 | thr->prev = t; |
| 3199 | t->next = thr; |
| 3200 | thr->next->prev = thr; |
| 3201 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 3202 | |
| 3203 | /* done copying parent's state */ |
| 3204 | MUTEX_UNLOCK(&t->mutex); |
| 3205 | |
| 3206 | #ifdef HAVE_THREAD_INTERN |
| 3207 | Perl_init_thread_intern(thr); |
| 3208 | #endif /* HAVE_THREAD_INTERN */ |
| 3209 | return thr; |
| 3210 | } |
| 3211 | #endif /* USE_5005THREADS */ |
| 3212 | |
| 3213 | #ifdef PERL_GLOBAL_STRUCT |
| 3214 | struct perl_vars * |
| 3215 | Perl_GetVars(pTHX) |
| 3216 | { |
| 3217 | return &PL_Vars; |
| 3218 | } |
| 3219 | #endif |
| 3220 | |
| 3221 | char ** |
| 3222 | Perl_get_op_names(pTHX) |
| 3223 | { |
| 3224 | return PL_op_name; |
| 3225 | } |
| 3226 | |
| 3227 | char ** |
| 3228 | Perl_get_op_descs(pTHX) |
| 3229 | { |
| 3230 | return PL_op_desc; |
| 3231 | } |
| 3232 | |
| 3233 | char * |
| 3234 | Perl_get_no_modify(pTHX) |
| 3235 | { |
| 3236 | return (char*)PL_no_modify; |
| 3237 | } |
| 3238 | |
| 3239 | U32 * |
| 3240 | Perl_get_opargs(pTHX) |
| 3241 | { |
| 3242 | return PL_opargs; |
| 3243 | } |
| 3244 | |
| 3245 | PPADDR_t* |
| 3246 | Perl_get_ppaddr(pTHX) |
| 3247 | { |
| 3248 | return (PPADDR_t*)PL_ppaddr; |
| 3249 | } |
| 3250 | |
| 3251 | #ifndef HAS_GETENV_LEN |
| 3252 | char * |
| 3253 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
| 3254 | { |
| 3255 | char *env_trans = PerlEnv_getenv(env_elem); |
| 3256 | if (env_trans) |
| 3257 | *len = strlen(env_trans); |
| 3258 | return env_trans; |
| 3259 | } |
| 3260 | #endif |
| 3261 | |
| 3262 | |
| 3263 | MGVTBL* |
| 3264 | Perl_get_vtbl(pTHX_ int vtbl_id) |
| 3265 | { |
| 3266 | MGVTBL* result = Null(MGVTBL*); |
| 3267 | |
| 3268 | switch(vtbl_id) { |
| 3269 | case want_vtbl_sv: |
| 3270 | result = &PL_vtbl_sv; |
| 3271 | break; |
| 3272 | case want_vtbl_env: |
| 3273 | result = &PL_vtbl_env; |
| 3274 | break; |
| 3275 | case want_vtbl_envelem: |
| 3276 | result = &PL_vtbl_envelem; |
| 3277 | break; |
| 3278 | case want_vtbl_sig: |
| 3279 | result = &PL_vtbl_sig; |
| 3280 | break; |
| 3281 | case want_vtbl_sigelem: |
| 3282 | result = &PL_vtbl_sigelem; |
| 3283 | break; |
| 3284 | case want_vtbl_pack: |
| 3285 | result = &PL_vtbl_pack; |
| 3286 | break; |
| 3287 | case want_vtbl_packelem: |
| 3288 | result = &PL_vtbl_packelem; |
| 3289 | break; |
| 3290 | case want_vtbl_dbline: |
| 3291 | result = &PL_vtbl_dbline; |
| 3292 | break; |
| 3293 | case want_vtbl_isa: |
| 3294 | result = &PL_vtbl_isa; |
| 3295 | break; |
| 3296 | case want_vtbl_isaelem: |
| 3297 | result = &PL_vtbl_isaelem; |
| 3298 | break; |
| 3299 | case want_vtbl_arylen: |
| 3300 | result = &PL_vtbl_arylen; |
| 3301 | break; |
| 3302 | case want_vtbl_glob: |
| 3303 | result = &PL_vtbl_glob; |
| 3304 | break; |
| 3305 | case want_vtbl_mglob: |
| 3306 | result = &PL_vtbl_mglob; |
| 3307 | break; |
| 3308 | case want_vtbl_nkeys: |
| 3309 | result = &PL_vtbl_nkeys; |
| 3310 | break; |
| 3311 | case want_vtbl_taint: |
| 3312 | result = &PL_vtbl_taint; |
| 3313 | break; |
| 3314 | case want_vtbl_substr: |
| 3315 | result = &PL_vtbl_substr; |
| 3316 | break; |
| 3317 | case want_vtbl_vec: |
| 3318 | result = &PL_vtbl_vec; |
| 3319 | break; |
| 3320 | case want_vtbl_pos: |
| 3321 | result = &PL_vtbl_pos; |
| 3322 | break; |
| 3323 | case want_vtbl_bm: |
| 3324 | result = &PL_vtbl_bm; |
| 3325 | break; |
| 3326 | case want_vtbl_fm: |
| 3327 | result = &PL_vtbl_fm; |
| 3328 | break; |
| 3329 | case want_vtbl_uvar: |
| 3330 | result = &PL_vtbl_uvar; |
| 3331 | break; |
| 3332 | #ifdef USE_5005THREADS |
| 3333 | case want_vtbl_mutex: |
| 3334 | result = &PL_vtbl_mutex; |
| 3335 | break; |
| 3336 | #endif |
| 3337 | case want_vtbl_defelem: |
| 3338 | result = &PL_vtbl_defelem; |
| 3339 | break; |
| 3340 | case want_vtbl_regexp: |
| 3341 | result = &PL_vtbl_regexp; |
| 3342 | break; |
| 3343 | case want_vtbl_regdata: |
| 3344 | result = &PL_vtbl_regdata; |
| 3345 | break; |
| 3346 | case want_vtbl_regdatum: |
| 3347 | result = &PL_vtbl_regdatum; |
| 3348 | break; |
| 3349 | #ifdef USE_LOCALE_COLLATE |
| 3350 | case want_vtbl_collxfrm: |
| 3351 | result = &PL_vtbl_collxfrm; |
| 3352 | break; |
| 3353 | #endif |
| 3354 | case want_vtbl_amagic: |
| 3355 | result = &PL_vtbl_amagic; |
| 3356 | break; |
| 3357 | case want_vtbl_amagicelem: |
| 3358 | result = &PL_vtbl_amagicelem; |
| 3359 | break; |
| 3360 | case want_vtbl_backref: |
| 3361 | result = &PL_vtbl_backref; |
| 3362 | break; |
| 3363 | } |
| 3364 | return result; |
| 3365 | } |
| 3366 | |
| 3367 | I32 |
| 3368 | Perl_my_fflush_all(pTHX) |
| 3369 | { |
| 3370 | #if defined(FFLUSH_NULL) |
| 3371 | return PerlIO_flush(NULL); |
| 3372 | #else |
| 3373 | # if defined(HAS__FWALK) |
| 3374 | /* undocumented, unprototyped, but very useful BSDism */ |
| 3375 | extern void _fwalk(int (*)(FILE *)); |
| 3376 | _fwalk(&fflush); |
| 3377 | return 0; |
| 3378 | # else |
| 3379 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
| 3380 | long open_max = -1; |
| 3381 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
| 3382 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
| 3383 | # else |
| 3384 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
| 3385 | open_max = sysconf(_SC_OPEN_MAX); |
| 3386 | # else |
| 3387 | # ifdef FOPEN_MAX |
| 3388 | open_max = FOPEN_MAX; |
| 3389 | # else |
| 3390 | # ifdef OPEN_MAX |
| 3391 | open_max = OPEN_MAX; |
| 3392 | # else |
| 3393 | # ifdef _NFILE |
| 3394 | open_max = _NFILE; |
| 3395 | # endif |
| 3396 | # endif |
| 3397 | # endif |
| 3398 | # endif |
| 3399 | # endif |
| 3400 | if (open_max > 0) { |
| 3401 | long i; |
| 3402 | for (i = 0; i < open_max; i++) |
| 3403 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
| 3404 | STDIO_STREAM_ARRAY[i]._file < open_max && |
| 3405 | STDIO_STREAM_ARRAY[i]._flag) |
| 3406 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); |
| 3407 | return 0; |
| 3408 | } |
| 3409 | # endif |
| 3410 | SETERRNO(EBADF,RMS$_IFI); |
| 3411 | return EOF; |
| 3412 | # endif |
| 3413 | #endif |
| 3414 | } |
| 3415 | |
| 3416 | void |
| 3417 | Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op) |
| 3418 | { |
| 3419 | char *vile; |
| 3420 | I32 warn_type; |
| 3421 | char *func = |
| 3422 | op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
| 3423 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ |
| 3424 | PL_op_desc[op]; |
| 3425 | char *pars = OP_IS_FILETEST(op) ? "" : "()"; |
| 3426 | char *type = OP_IS_SOCKET(op) || |
| 3427 | (gv && io && IoTYPE(io) == IoTYPE_SOCKET) ? |
| 3428 | "socket" : "filehandle"; |
| 3429 | char *name = NULL; |
| 3430 | |
| 3431 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { |
| 3432 | vile = "closed"; |
| 3433 | warn_type = WARN_CLOSED; |
| 3434 | } |
| 3435 | else { |
| 3436 | vile = "unopened"; |
| 3437 | warn_type = WARN_UNOPENED; |
| 3438 | } |
| 3439 | |
| 3440 | if (gv && isGV(gv)) { |
| 3441 | SV *sv = sv_newmortal(); |
| 3442 | gv_efullname4(sv, gv, Nullch, FALSE); |
| 3443 | name = SvPVX(sv); |
| 3444 | } |
| 3445 | |
| 3446 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
| 3447 | if (name && *name) |
| 3448 | Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for %sput", |
| 3449 | name, |
| 3450 | (op == OP_phoney_INPUT_ONLY ? "in" : "out")); |
| 3451 | else |
| 3452 | Perl_warner(aTHX_ WARN_IO, "Filehandle opened only for %sput", |
| 3453 | (op == OP_phoney_INPUT_ONLY ? "in" : "out")); |
| 3454 | } else if (name && *name) { |
| 3455 | Perl_warner(aTHX_ warn_type, |
| 3456 | "%s%s on %s %s %s", func, pars, vile, type, name); |
| 3457 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) |
| 3458 | Perl_warner(aTHX_ warn_type, |
| 3459 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", |
| 3460 | func, pars, name); |
| 3461 | } |
| 3462 | else { |
| 3463 | Perl_warner(aTHX_ warn_type, |
| 3464 | "%s%s on %s %s", func, pars, vile, type); |
| 3465 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) |
| 3466 | Perl_warner(aTHX_ warn_type, |
| 3467 | "\t(Are you trying to call %s%s on dirhandle?)\n", |
| 3468 | func, pars); |
| 3469 | } |
| 3470 | } |
| 3471 | |
| 3472 | #ifdef EBCDIC |
| 3473 | /* in ASCII order, not that it matters */ |
| 3474 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; |
| 3475 | |
| 3476 | int |
| 3477 | Perl_ebcdic_control(pTHX_ int ch) |
| 3478 | { |
| 3479 | if (ch > 'a') { |
| 3480 | char *ctlp; |
| 3481 | |
| 3482 | if (islower(ch)) |
| 3483 | ch = toupper(ch); |
| 3484 | |
| 3485 | if ((ctlp = strchr(controllablechars, ch)) == 0) { |
| 3486 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); |
| 3487 | } |
| 3488 | |
| 3489 | if (ctlp == controllablechars) |
| 3490 | return('\177'); /* DEL */ |
| 3491 | else |
| 3492 | return((unsigned char)(ctlp - controllablechars - 1)); |
| 3493 | } else { /* Want uncontrol */ |
| 3494 | if (ch == '\177' || ch == -1) |
| 3495 | return('?'); |
| 3496 | else if (ch == '\157') |
| 3497 | return('\177'); |
| 3498 | else if (ch == '\174') |
| 3499 | return('\000'); |
| 3500 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ |
| 3501 | return('\036'); |
| 3502 | else if (ch == '\155') |
| 3503 | return('\037'); |
| 3504 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) |
| 3505 | return(controllablechars[ch+1]); |
| 3506 | else |
| 3507 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); |
| 3508 | } |
| 3509 | } |
| 3510 | #endif |
| 3511 | |
| 3512 | /* XXX struct tm on some systems (SunOS4/BSD) contains extra (non POSIX) |
| 3513 | * fields for which we don't have Configure support yet: |
| 3514 | * char *tm_zone; -- abbreviation of timezone name |
| 3515 | * long tm_gmtoff; -- offset from GMT in seconds |
| 3516 | * To workaround core dumps from the uninitialised tm_zone we get the |
| 3517 | * system to give us a reasonable struct to copy. This fix means that |
| 3518 | * strftime uses the tm_zone and tm_gmtoff values returned by |
| 3519 | * localtime(time()). That should give the desired result most of the |
| 3520 | * time. But probably not always! |
| 3521 | * |
| 3522 | * This is a temporary workaround to be removed once Configure |
| 3523 | * support is added and NETaa14816 is considered in full. |
| 3524 | * It does not address tzname aspects of NETaa14816. |
| 3525 | */ |
| 3526 | #ifdef HAS_GNULIBC |
| 3527 | # ifndef STRUCT_TM_HASZONE |
| 3528 | # define STRUCT_TM_HASZONE |
| 3529 | # endif |
| 3530 | #endif |
| 3531 | |
| 3532 | void |
| 3533 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
| 3534 | { |
| 3535 | #ifdef STRUCT_TM_HASZONE |
| 3536 | Time_t now; |
| 3537 | (void)time(&now); |
| 3538 | Copy(localtime(&now), ptm, 1, struct tm); |
| 3539 | #endif |
| 3540 | } |
| 3541 | |
| 3542 | /* |
| 3543 | * mini_mktime - normalise struct tm values without the localtime() |
| 3544 | * semantics (and overhead) of mktime(). |
| 3545 | */ |
| 3546 | void |
| 3547 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
| 3548 | { |
| 3549 | int yearday; |
| 3550 | int secs; |
| 3551 | int month, mday, year, jday; |
| 3552 | int odd_cent, odd_year; |
| 3553 | |
| 3554 | #define DAYS_PER_YEAR 365 |
| 3555 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) |
| 3556 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) |
| 3557 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) |
| 3558 | #define SECS_PER_HOUR (60*60) |
| 3559 | #define SECS_PER_DAY (24*SECS_PER_HOUR) |
| 3560 | /* parentheses deliberately absent on these two, otherwise they don't work */ |
| 3561 | #define MONTH_TO_DAYS 153/5 |
| 3562 | #define DAYS_TO_MONTH 5/153 |
| 3563 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ |
| 3564 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) |
| 3565 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ |
| 3566 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ |
| 3567 | |
| 3568 | /* |
| 3569 | * Year/day algorithm notes: |
| 3570 | * |
| 3571 | * With a suitable offset for numeric value of the month, one can find |
| 3572 | * an offset into the year by considering months to have 30.6 (153/5) days, |
| 3573 | * using integer arithmetic (i.e., with truncation). To avoid too much |
| 3574 | * messing about with leap days, we consider January and February to be |
| 3575 | * the 13th and 14th month of the previous year. After that transformation, |
| 3576 | * we need the month index we use to be high by 1 from 'normal human' usage, |
| 3577 | * so the month index values we use run from 4 through 15. |
| 3578 | * |
| 3579 | * Given that, and the rules for the Gregorian calendar (leap years are those |
| 3580 | * divisible by 4 unless also divisible by 100, when they must be divisible |
| 3581 | * by 400 instead), we can simply calculate the number of days since some |
| 3582 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, |
| 3583 | * the days we derive from our month index, and adding in the day of the |
| 3584 | * month. The value used here is not adjusted for the actual origin which |
| 3585 | * it normally would use (1 January A.D. 1), since we're not exposing it. |
| 3586 | * We're only building the value so we can turn around and get the |
| 3587 | * normalised values for the year, month, day-of-month, and day-of-year. |
| 3588 | * |
| 3589 | * For going backward, we need to bias the value we're using so that we find |
| 3590 | * the right year value. (Basically, we don't want the contribution of |
| 3591 | * March 1st to the number to apply while deriving the year). Having done |
| 3592 | * that, we 'count up' the contribution to the year number by accounting for |
| 3593 | * full quadracenturies (400-year periods) with their extra leap days, plus |
| 3594 | * the contribution from full centuries (to avoid counting in the lost leap |
| 3595 | * days), plus the contribution from full quad-years (to count in the normal |
| 3596 | * leap days), plus the leftover contribution from any non-leap years. |
| 3597 | * At this point, if we were working with an actual leap day, we'll have 0 |
| 3598 | * days left over. This is also true for March 1st, however. So, we have |
| 3599 | * to special-case that result, and (earlier) keep track of the 'odd' |
| 3600 | * century and year contributions. If we got 4 extra centuries in a qcent, |
| 3601 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. |
| 3602 | * Otherwise, we add back in the earlier bias we removed (the 123 from |
| 3603 | * figuring in March 1st), find the month index (integer division by 30.6), |
| 3604 | * and the remainder is the day-of-month. We then have to convert back to |
| 3605 | * 'real' months (including fixing January and February from being 14/15 in |
| 3606 | * the previous year to being in the proper year). After that, to get |
| 3607 | * tm_yday, we work with the normalised year and get a new yearday value for |
| 3608 | * January 1st, which we subtract from the yearday value we had earlier, |
| 3609 | * representing the date we've re-built. This is done from January 1 |
| 3610 | * because tm_yday is 0-origin. |
| 3611 | * |
| 3612 | * Since POSIX time routines are only guaranteed to work for times since the |
| 3613 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm |
| 3614 | * applies Gregorian calendar rules even to dates before the 16th century |
| 3615 | * doesn't bother me. Besides, you'd need cultural context for a given |
| 3616 | * date to know whether it was Julian or Gregorian calendar, and that's |
| 3617 | * outside the scope for this routine. Since we convert back based on the |
| 3618 | * same rules we used to build the yearday, you'll only get strange results |
| 3619 | * for input which needed normalising, or for the 'odd' century years which |
| 3620 | * were leap years in the Julian calander but not in the Gregorian one. |
| 3621 | * I can live with that. |
| 3622 | * |
| 3623 | * This algorithm also fails to handle years before A.D. 1 gracefully, but |
| 3624 | * that's still outside the scope for POSIX time manipulation, so I don't |
| 3625 | * care. |
| 3626 | */ |
| 3627 | |
| 3628 | year = 1900 + ptm->tm_year; |
| 3629 | month = ptm->tm_mon; |
| 3630 | mday = ptm->tm_mday; |
| 3631 | /* allow given yday with no month & mday to dominate the result */ |
| 3632 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { |
| 3633 | month = 0; |
| 3634 | mday = 0; |
| 3635 | jday = 1 + ptm->tm_yday; |
| 3636 | } |
| 3637 | else { |
| 3638 | jday = 0; |
| 3639 | } |
| 3640 | if (month >= 2) |
| 3641 | month+=2; |
| 3642 | else |
| 3643 | month+=14, year--; |
| 3644 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; |
| 3645 | yearday += month*MONTH_TO_DAYS + mday + jday; |
| 3646 | /* |
| 3647 | * Note that we don't know when leap-seconds were or will be, |
| 3648 | * so we have to trust the user if we get something which looks |
| 3649 | * like a sensible leap-second. Wild values for seconds will |
| 3650 | * be rationalised, however. |
| 3651 | */ |
| 3652 | if ((unsigned) ptm->tm_sec <= 60) { |
| 3653 | secs = 0; |
| 3654 | } |
| 3655 | else { |
| 3656 | secs = ptm->tm_sec; |
| 3657 | ptm->tm_sec = 0; |
| 3658 | } |
| 3659 | secs += 60 * ptm->tm_min; |
| 3660 | secs += SECS_PER_HOUR * ptm->tm_hour; |
| 3661 | if (secs < 0) { |
| 3662 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { |
| 3663 | /* got negative remainder, but need positive time */ |
| 3664 | /* back off an extra day to compensate */ |
| 3665 | yearday += (secs/SECS_PER_DAY)-1; |
| 3666 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); |
| 3667 | } |
| 3668 | else { |
| 3669 | yearday += (secs/SECS_PER_DAY); |
| 3670 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); |
| 3671 | } |
| 3672 | } |
| 3673 | else if (secs >= SECS_PER_DAY) { |
| 3674 | yearday += (secs/SECS_PER_DAY); |
| 3675 | secs %= SECS_PER_DAY; |
| 3676 | } |
| 3677 | ptm->tm_hour = secs/SECS_PER_HOUR; |
| 3678 | secs %= SECS_PER_HOUR; |
| 3679 | ptm->tm_min = secs/60; |
| 3680 | secs %= 60; |
| 3681 | ptm->tm_sec += secs; |
| 3682 | /* done with time of day effects */ |
| 3683 | /* |
| 3684 | * The algorithm for yearday has (so far) left it high by 428. |
| 3685 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to |
| 3686 | * bias it by 123 while trying to figure out what year it |
| 3687 | * really represents. Even with this tweak, the reverse |
| 3688 | * translation fails for years before A.D. 0001. |
| 3689 | * It would still fail for Feb 29, but we catch that one below. |
| 3690 | */ |
| 3691 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ |
| 3692 | yearday -= YEAR_ADJUST; |
| 3693 | year = (yearday / DAYS_PER_QCENT) * 400; |
| 3694 | yearday %= DAYS_PER_QCENT; |
| 3695 | odd_cent = yearday / DAYS_PER_CENT; |
| 3696 | year += odd_cent * 100; |
| 3697 | yearday %= DAYS_PER_CENT; |
| 3698 | year += (yearday / DAYS_PER_QYEAR) * 4; |
| 3699 | yearday %= DAYS_PER_QYEAR; |
| 3700 | odd_year = yearday / DAYS_PER_YEAR; |
| 3701 | year += odd_year; |
| 3702 | yearday %= DAYS_PER_YEAR; |
| 3703 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ |
| 3704 | month = 1; |
| 3705 | yearday = 29; |
| 3706 | } |
| 3707 | else { |
| 3708 | yearday += YEAR_ADJUST; /* recover March 1st crock */ |
| 3709 | month = yearday*DAYS_TO_MONTH; |
| 3710 | yearday -= month*MONTH_TO_DAYS; |
| 3711 | /* recover other leap-year adjustment */ |
| 3712 | if (month > 13) { |
| 3713 | month-=14; |
| 3714 | year++; |
| 3715 | } |
| 3716 | else { |
| 3717 | month-=2; |
| 3718 | } |
| 3719 | } |
| 3720 | ptm->tm_year = year - 1900; |
| 3721 | if (yearday) { |
| 3722 | ptm->tm_mday = yearday; |
| 3723 | ptm->tm_mon = month; |
| 3724 | } |
| 3725 | else { |
| 3726 | ptm->tm_mday = 31; |
| 3727 | ptm->tm_mon = month - 1; |
| 3728 | } |
| 3729 | /* re-build yearday based on Jan 1 to get tm_yday */ |
| 3730 | year--; |
| 3731 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; |
| 3732 | yearday += 14*MONTH_TO_DAYS + 1; |
| 3733 | ptm->tm_yday = jday - yearday; |
| 3734 | /* fix tm_wday if not overridden by caller */ |
| 3735 | if ((unsigned)ptm->tm_wday > 6) |
| 3736 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; |
| 3737 | } |
| 3738 | |
| 3739 | char * |
| 3740 | Perl_my_strftime(pTHX_ char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
| 3741 | { |
| 3742 | #ifdef HAS_STRFTIME |
| 3743 | char *buf; |
| 3744 | int buflen; |
| 3745 | struct tm mytm; |
| 3746 | int len; |
| 3747 | |
| 3748 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ |
| 3749 | mytm.tm_sec = sec; |
| 3750 | mytm.tm_min = min; |
| 3751 | mytm.tm_hour = hour; |
| 3752 | mytm.tm_mday = mday; |
| 3753 | mytm.tm_mon = mon; |
| 3754 | mytm.tm_year = year; |
| 3755 | mytm.tm_wday = wday; |
| 3756 | mytm.tm_yday = yday; |
| 3757 | mytm.tm_isdst = isdst; |
| 3758 | mini_mktime(&mytm); |
| 3759 | buflen = 64; |
| 3760 | New(0, buf, buflen, char); |
| 3761 | len = strftime(buf, buflen, fmt, &mytm); |
| 3762 | /* |
| 3763 | ** The following is needed to handle to the situation where |
| 3764 | ** tmpbuf overflows. Basically we want to allocate a buffer |
| 3765 | ** and try repeatedly. The reason why it is so complicated |
| 3766 | ** is that getting a return value of 0 from strftime can indicate |
| 3767 | ** one of the following: |
| 3768 | ** 1. buffer overflowed, |
| 3769 | ** 2. illegal conversion specifier, or |
| 3770 | ** 3. the format string specifies nothing to be returned(not |
| 3771 | ** an error). This could be because format is an empty string |
| 3772 | ** or it specifies %p that yields an empty string in some locale. |
| 3773 | ** If there is a better way to make it portable, go ahead by |
| 3774 | ** all means. |
| 3775 | */ |
| 3776 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) |
| 3777 | return buf; |
| 3778 | else { |
| 3779 | /* Possibly buf overflowed - try again with a bigger buf */ |
| 3780 | int fmtlen = strlen(fmt); |
| 3781 | int bufsize = fmtlen + buflen; |
| 3782 | |
| 3783 | New(0, buf, bufsize, char); |
| 3784 | while (buf) { |
| 3785 | buflen = strftime(buf, bufsize, fmt, &mytm); |
| 3786 | if (buflen > 0 && buflen < bufsize) |
| 3787 | break; |
| 3788 | /* heuristic to prevent out-of-memory errors */ |
| 3789 | if (bufsize > 100*fmtlen) { |
| 3790 | Safefree(buf); |
| 3791 | buf = NULL; |
| 3792 | break; |
| 3793 | } |
| 3794 | bufsize *= 2; |
| 3795 | Renew(buf, bufsize, char); |
| 3796 | } |
| 3797 | return buf; |
| 3798 | } |
| 3799 | #else |
| 3800 | Perl_croak(aTHX_ "panic: no strftime"); |
| 3801 | #endif |
| 3802 | } |
| 3803 | |
| 3804 | |
| 3805 | #define SV_CWD_RETURN_UNDEF \ |
| 3806 | sv_setsv(sv, &PL_sv_undef); \ |
| 3807 | return FALSE |
| 3808 | |
| 3809 | #define SV_CWD_ISDOT(dp) \ |
| 3810 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ |
| 3811 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
| 3812 | |
| 3813 | /* |
| 3814 | =head1 Miscellaneous Functions |
| 3815 | |
| 3816 | =for apidoc getcwd_sv |
| 3817 | |
| 3818 | Fill the sv with current working directory |
| 3819 | |
| 3820 | =cut |
| 3821 | */ |
| 3822 | |
| 3823 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. |
| 3824 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer |
| 3825 | * getcwd(3) if available |
| 3826 | * Comments from the orignal: |
| 3827 | * This is a faster version of getcwd. It's also more dangerous |
| 3828 | * because you might chdir out of a directory that you can't chdir |
| 3829 | * back into. */ |
| 3830 | |
| 3831 | int |
| 3832 | Perl_getcwd_sv(pTHX_ register SV *sv) |
| 3833 | { |
| 3834 | #ifndef PERL_MICRO |
| 3835 | |
| 3836 | #ifndef INCOMPLETE_TAINTS |
| 3837 | SvTAINTED_on(sv); |
| 3838 | #endif |
| 3839 | |
| 3840 | #ifdef HAS_GETCWD |
| 3841 | { |
| 3842 | char buf[MAXPATHLEN]; |
| 3843 | |
| 3844 | /* Some getcwd()s automatically allocate a buffer of the given |
| 3845 | * size from the heap if they are given a NULL buffer pointer. |
| 3846 | * The problem is that this behaviour is not portable. */ |
| 3847 | if (getcwd(buf, sizeof(buf) - 1)) { |
| 3848 | STRLEN len = strlen(buf); |
| 3849 | sv_setpvn(sv, buf, len); |
| 3850 | return TRUE; |
| 3851 | } |
| 3852 | else { |
| 3853 | sv_setsv(sv, &PL_sv_undef); |
| 3854 | return FALSE; |
| 3855 | } |
| 3856 | } |
| 3857 | |
| 3858 | #else |
| 3859 | |
| 3860 | struct stat statbuf; |
| 3861 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
| 3862 | int namelen, pathlen=0; |
| 3863 | DIR *dir; |
| 3864 | Direntry_t *dp; |
| 3865 | |
| 3866 | (void)SvUPGRADE(sv, SVt_PV); |
| 3867 | |
| 3868 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
| 3869 | SV_CWD_RETURN_UNDEF; |
| 3870 | } |
| 3871 | |
| 3872 | orig_cdev = statbuf.st_dev; |
| 3873 | orig_cino = statbuf.st_ino; |
| 3874 | cdev = orig_cdev; |
| 3875 | cino = orig_cino; |
| 3876 | |
| 3877 | for (;;) { |
| 3878 | odev = cdev; |
| 3879 | oino = cino; |
| 3880 | |
| 3881 | if (PerlDir_chdir("..") < 0) { |
| 3882 | SV_CWD_RETURN_UNDEF; |
| 3883 | } |
| 3884 | if (PerlLIO_stat(".", &statbuf) < 0) { |
| 3885 | SV_CWD_RETURN_UNDEF; |
| 3886 | } |
| 3887 | |
| 3888 | cdev = statbuf.st_dev; |
| 3889 | cino = statbuf.st_ino; |
| 3890 | |
| 3891 | if (odev == cdev && oino == cino) { |
| 3892 | break; |
| 3893 | } |
| 3894 | if (!(dir = PerlDir_open("."))) { |
| 3895 | SV_CWD_RETURN_UNDEF; |
| 3896 | } |
| 3897 | |
| 3898 | while ((dp = PerlDir_read(dir)) != NULL) { |
| 3899 | #ifdef DIRNAMLEN |
| 3900 | namelen = dp->d_namlen; |
| 3901 | #else |
| 3902 | namelen = strlen(dp->d_name); |
| 3903 | #endif |
| 3904 | /* skip . and .. */ |
| 3905 | if (SV_CWD_ISDOT(dp)) { |
| 3906 | continue; |
| 3907 | } |
| 3908 | |
| 3909 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { |
| 3910 | SV_CWD_RETURN_UNDEF; |
| 3911 | } |
| 3912 | |
| 3913 | tdev = statbuf.st_dev; |
| 3914 | tino = statbuf.st_ino; |
| 3915 | if (tino == oino && tdev == odev) { |
| 3916 | break; |
| 3917 | } |
| 3918 | } |
| 3919 | |
| 3920 | if (!dp) { |
| 3921 | SV_CWD_RETURN_UNDEF; |
| 3922 | } |
| 3923 | |
| 3924 | if (pathlen + namelen + 1 >= MAXPATHLEN) { |
| 3925 | SV_CWD_RETURN_UNDEF; |
| 3926 | } |
| 3927 | |
| 3928 | SvGROW(sv, pathlen + namelen + 1); |
| 3929 | |
| 3930 | if (pathlen) { |
| 3931 | /* shift down */ |
| 3932 | Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char); |
| 3933 | } |
| 3934 | |
| 3935 | /* prepend current directory to the front */ |
| 3936 | *SvPVX(sv) = '/'; |
| 3937 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); |
| 3938 | pathlen += (namelen + 1); |
| 3939 | |
| 3940 | #ifdef VOID_CLOSEDIR |
| 3941 | PerlDir_close(dir); |
| 3942 | #else |
| 3943 | if (PerlDir_close(dir) < 0) { |
| 3944 | SV_CWD_RETURN_UNDEF; |
| 3945 | } |
| 3946 | #endif |
| 3947 | } |
| 3948 | |
| 3949 | if (pathlen) { |
| 3950 | SvCUR_set(sv, pathlen); |
| 3951 | *SvEND(sv) = '\0'; |
| 3952 | SvPOK_only(sv); |
| 3953 | |
| 3954 | if (PerlDir_chdir(SvPVX(sv)) < 0) { |
| 3955 | SV_CWD_RETURN_UNDEF; |
| 3956 | } |
| 3957 | } |
| 3958 | if (PerlLIO_stat(".", &statbuf) < 0) { |
| 3959 | SV_CWD_RETURN_UNDEF; |
| 3960 | } |
| 3961 | |
| 3962 | cdev = statbuf.st_dev; |
| 3963 | cino = statbuf.st_ino; |
| 3964 | |
| 3965 | if (cdev != orig_cdev || cino != orig_cino) { |
| 3966 | Perl_croak(aTHX_ "Unstable directory path, " |
| 3967 | "current directory changed unexpectedly"); |
| 3968 | } |
| 3969 | #endif |
| 3970 | |
| 3971 | return TRUE; |
| 3972 | #else |
| 3973 | return FALSE; |
| 3974 | #endif |
| 3975 | } |
| 3976 | |
| 3977 | /* |
| 3978 | =head1 SV Manipulation Functions |
| 3979 | |
| 3980 | =for apidoc new_vstring |
| 3981 | |
| 3982 | Returns a pointer to the next character after the parsed |
| 3983 | vstring, as well as updating the passed in sv. |
| 3984 | |
| 3985 | Function must be called like |
| 3986 | |
| 3987 | sv = NEWSV(92,5); |
| 3988 | s = new_vstring(s,sv); |
| 3989 | |
| 3990 | The sv must already be large enough to store the vstring |
| 3991 | passed in. |
| 3992 | |
| 3993 | =cut |
| 3994 | */ |
| 3995 | |
| 3996 | char * |
| 3997 | Perl_new_vstring(pTHX_ char *s, SV *sv) |
| 3998 | { |
| 3999 | char *pos = s; |
| 4000 | if (*pos == 'v') pos++; /* get past 'v' */ |
| 4001 | while (isDIGIT(*pos) || *pos == '_') |
| 4002 | pos++; |
| 4003 | if (!isALPHA(*pos)) { |
| 4004 | UV rev; |
| 4005 | U8 tmpbuf[UTF8_MAXLEN+1]; |
| 4006 | U8 *tmpend; |
| 4007 | |
| 4008 | if (*s == 'v') s++; /* get past 'v' */ |
| 4009 | |
| 4010 | sv_setpvn(sv, "", 0); |
| 4011 | |
| 4012 | for (;;) { |
| 4013 | rev = 0; |
| 4014 | { |
| 4015 | /* this is atoi() that tolerates underscores */ |
| 4016 | char *end = pos; |
| 4017 | UV mult = 1; |
| 4018 | if ( *(s-1) == '_') { |
| 4019 | mult = 10; |
| 4020 | } |
| 4021 | while (--end >= s) { |
| 4022 | UV orev; |
| 4023 | orev = rev; |
| 4024 | rev += (*end - '0') * mult; |
| 4025 | mult *= 10; |
| 4026 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) |
| 4027 | Perl_warner(aTHX_ WARN_OVERFLOW, |
| 4028 | "Integer overflow in decimal number"); |
| 4029 | } |
| 4030 | } |
| 4031 | #ifdef EBCDIC |
| 4032 | if (rev > 0x7FFFFFFF) |
| 4033 | Perl_croak(aTHX "In EBCDIC the v-string components cannot exceed 2147483647"); |
| 4034 | #endif |
| 4035 | /* Append native character for the rev point */ |
| 4036 | tmpend = uvchr_to_utf8(tmpbuf, rev); |
| 4037 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
| 4038 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) |
| 4039 | SvUTF8_on(sv); |
| 4040 | if ( (*pos == '.' || *pos == '_') && isDIGIT(pos[1])) |
| 4041 | s = ++pos; |
| 4042 | else { |
| 4043 | s = pos; |
| 4044 | break; |
| 4045 | } |
| 4046 | while (isDIGIT(*pos) ) |
| 4047 | pos++; |
| 4048 | } |
| 4049 | SvPOK_on(sv); |
| 4050 | SvREADONLY_on(sv); |
| 4051 | } |
| 4052 | return s; |
| 4053 | } |
| 4054 | |
| 4055 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) |
| 4056 | # define EMULATE_SOCKETPAIR_UDP |
| 4057 | #endif |
| 4058 | |
| 4059 | #ifdef EMULATE_SOCKETPAIR_UDP |
| 4060 | static int |
| 4061 | S_socketpair_udp (int fd[2]) { |
| 4062 | dTHX; |
| 4063 | /* Fake a datagram socketpair using UDP to localhost. */ |
| 4064 | int sockets[2] = {-1, -1}; |
| 4065 | struct sockaddr_in addresses[2]; |
| 4066 | int i; |
| 4067 | Sock_size_t size = sizeof (struct sockaddr_in); |
| 4068 | unsigned short port; |
| 4069 | int got; |
| 4070 | |
| 4071 | memset (&addresses, 0, sizeof (addresses)); |
| 4072 | i = 1; |
| 4073 | do { |
| 4074 | sockets[i] = PerlSock_socket (AF_INET, SOCK_DGRAM, PF_INET); |
| 4075 | if (sockets[i] == -1) |
| 4076 | goto tidy_up_and_fail; |
| 4077 | |
| 4078 | addresses[i].sin_family = AF_INET; |
| 4079 | addresses[i].sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
| 4080 | addresses[i].sin_port = 0; /* kernel choses port. */ |
| 4081 | if (PerlSock_bind (sockets[i], (struct sockaddr *) &addresses[i], |
| 4082 | sizeof (struct sockaddr_in)) |
| 4083 | == -1) |
| 4084 | goto tidy_up_and_fail; |
| 4085 | } while (i--); |
| 4086 | |
| 4087 | /* Now have 2 UDP sockets. Find out which port each is connected to, and |
| 4088 | for each connect the other socket to it. */ |
| 4089 | i = 1; |
| 4090 | do { |
| 4091 | if (PerlSock_getsockname (sockets[i], (struct sockaddr *) &addresses[i], &size) |
| 4092 | == -1) |
| 4093 | goto tidy_up_and_fail; |
| 4094 | if (size != sizeof (struct sockaddr_in)) |
| 4095 | goto abort_tidy_up_and_fail; |
| 4096 | /* !1 is 0, !0 is 1 */ |
| 4097 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], |
| 4098 | sizeof (struct sockaddr_in)) == -1) |
| 4099 | goto tidy_up_and_fail; |
| 4100 | } while (i--); |
| 4101 | |
| 4102 | /* Now we have 2 sockets connected to each other. I don't trust some other |
| 4103 | process not to have already sent a packet to us (by random) so send |
| 4104 | a packet from each to the other. */ |
| 4105 | i = 1; |
| 4106 | do { |
| 4107 | /* I'm going to send my own port number. As a short. |
| 4108 | (Who knows if someone somewhere has sin_port as a bitfield and needs |
| 4109 | this routine. (I'm assuming crays have socketpair)) */ |
| 4110 | port = addresses[i].sin_port; |
| 4111 | got = PerlLIO_write (sockets[i], &port, sizeof(port)); |
| 4112 | if (got != sizeof(port)) { |
| 4113 | if (got == -1) |
| 4114 | goto tidy_up_and_fail; |
| 4115 | goto abort_tidy_up_and_fail; |
| 4116 | } |
| 4117 | } while (i--); |
| 4118 | |
| 4119 | /* Packets sent. I don't trust them to have arrived though. |
| 4120 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking |
| 4121 | connect to localhost will use a second kernel thread. In 2.6 the |
| 4122 | first thread running the connect() returns before the second completes, |
| 4123 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() |
| 4124 | returns 0. Poor programs have tripped up. One poor program's authors' |
| 4125 | had a 50-1 reverse stock split. Not sure how connected these were.) |
| 4126 | So I don't trust someone not to have an unpredictable UDP stack. |
| 4127 | */ |
| 4128 | |
| 4129 | { |
| 4130 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
| 4131 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; |
| 4132 | fd_set rset; |
| 4133 | |
| 4134 | FD_ZERO (&rset); |
| 4135 | FD_SET (sockets[0], &rset); |
| 4136 | FD_SET (sockets[1], &rset); |
| 4137 | |
| 4138 | got = PerlSock_select (max + 1, &rset, NULL, NULL, &waitfor); |
| 4139 | if (got != 2 || !FD_ISSET (sockets[0], &rset) |
| 4140 | || !FD_ISSET (sockets[1], &rset)) { |
| 4141 | /* I hope this is portable and appropriate. */ |
| 4142 | if (got == -1) |
| 4143 | goto tidy_up_and_fail; |
| 4144 | goto abort_tidy_up_and_fail; |
| 4145 | } |
| 4146 | } |
| 4147 | |
| 4148 | /* And the paranoia department even now doesn't trust it to have arrive |
| 4149 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ |
| 4150 | { |
| 4151 | struct sockaddr_in readfrom; |
| 4152 | unsigned short buffer[2]; |
| 4153 | |
| 4154 | i = 1; |
| 4155 | do { |
| 4156 | #ifdef MSG_DONTWAIT |
| 4157 | got = PerlSock_recvfrom (sockets[i], (char *) &buffer, sizeof(buffer), |
| 4158 | MSG_DONTWAIT, |
| 4159 | (struct sockaddr *) &readfrom, &size); |
| 4160 | #else |
| 4161 | got = PerlSock_recvfrom (sockets[i], (char *) &buffer, sizeof(buffer), |
| 4162 | 0, |
| 4163 | (struct sockaddr *) &readfrom, &size); |
| 4164 | #endif |
| 4165 | |
| 4166 | if (got == -1) |
| 4167 | goto tidy_up_and_fail; |
| 4168 | if (got != sizeof(port) |
| 4169 | || size != sizeof (struct sockaddr_in) |
| 4170 | /* Check other socket sent us its port. */ |
| 4171 | || buffer[0] != (unsigned short) addresses[!i].sin_port |
| 4172 | /* Check kernel says we got the datagram from that socket. */ |
| 4173 | || readfrom.sin_family != addresses[!i].sin_family |
| 4174 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr |
| 4175 | || readfrom.sin_port != addresses[!i].sin_port) |
| 4176 | goto abort_tidy_up_and_fail; |
| 4177 | } while (i--); |
| 4178 | } |
| 4179 | /* My caller (my_socketpair) has validated that this is non-NULL */ |
| 4180 | fd[0] = sockets[0]; |
| 4181 | fd[1] = sockets[1]; |
| 4182 | /* I hereby declare this connection open. May God bless all who cross |
| 4183 | her. */ |
| 4184 | return 0; |
| 4185 | |
| 4186 | abort_tidy_up_and_fail: |
| 4187 | errno = ECONNABORTED; |
| 4188 | tidy_up_and_fail: |
| 4189 | { |
| 4190 | int save_errno = errno; |
| 4191 | if (sockets[0] != -1) |
| 4192 | PerlLIO_close (sockets[0]); |
| 4193 | if (sockets[1] != -1) |
| 4194 | PerlLIO_close (sockets[1]); |
| 4195 | errno = save_errno; |
| 4196 | return -1; |
| 4197 | } |
| 4198 | } |
| 4199 | |
| 4200 | int |
| 4201 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { |
| 4202 | /* Stevens says that family must be AF_LOCAL, protocol 0. |
| 4203 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
| 4204 | dTHX; |
| 4205 | int listener = -1; |
| 4206 | int connector = -1; |
| 4207 | int acceptor = -1; |
| 4208 | struct sockaddr_in listen_addr; |
| 4209 | struct sockaddr_in connect_addr; |
| 4210 | Sock_size_t size; |
| 4211 | |
| 4212 | if (protocol |
| 4213 | #ifdef AF_UNIX |
| 4214 | || family != AF_UNIX |
| 4215 | #endif |
| 4216 | ) { |
| 4217 | errno = EAFNOSUPPORT; |
| 4218 | return -1; |
| 4219 | } |
| 4220 | if (!fd) { |
| 4221 | errno = EINVAL; |
| 4222 | return -1; |
| 4223 | } |
| 4224 | |
| 4225 | #ifdef EMULATE_SOCKETPAIR_UDP |
| 4226 | if (type == SOCK_DGRAM) |
| 4227 | return S_socketpair_udp (fd); |
| 4228 | #endif |
| 4229 | |
| 4230 | listener = PerlSock_socket (AF_INET, type, 0); |
| 4231 | if (listener == -1) |
| 4232 | return -1; |
| 4233 | memset (&listen_addr, 0, sizeof (listen_addr)); |
| 4234 | listen_addr.sin_family = AF_INET; |
| 4235 | listen_addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
| 4236 | listen_addr.sin_port = 0; /* kernel choses port. */ |
| 4237 | if (PerlSock_bind (listener, (struct sockaddr *) &listen_addr, sizeof (listen_addr)) |
| 4238 | == -1) |
| 4239 | goto tidy_up_and_fail; |
| 4240 | if (PerlSock_listen(listener, 1) == -1) |
| 4241 | goto tidy_up_and_fail; |
| 4242 | |
| 4243 | connector = PerlSock_socket (AF_INET, type, 0); |
| 4244 | if (connector == -1) |
| 4245 | goto tidy_up_and_fail; |
| 4246 | /* We want to find out the port number to connect to. */ |
| 4247 | size = sizeof (connect_addr); |
| 4248 | if (PerlSock_getsockname (listener, (struct sockaddr *) &connect_addr, &size) == -1) |
| 4249 | goto tidy_up_and_fail; |
| 4250 | if (size != sizeof (connect_addr)) |
| 4251 | goto abort_tidy_up_and_fail; |
| 4252 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
| 4253 | sizeof (connect_addr)) == -1) |
| 4254 | goto tidy_up_and_fail; |
| 4255 | |
| 4256 | size = sizeof (listen_addr); |
| 4257 | acceptor = PerlSock_accept (listener, (struct sockaddr *) &listen_addr, &size); |
| 4258 | if (acceptor == -1) |
| 4259 | goto tidy_up_and_fail; |
| 4260 | if (size != sizeof (listen_addr)) |
| 4261 | goto abort_tidy_up_and_fail; |
| 4262 | PerlLIO_close (listener); |
| 4263 | /* Now check we are talking to ourself by matching port and host on the |
| 4264 | two sockets. */ |
| 4265 | if (PerlSock_getsockname (connector, (struct sockaddr *) &connect_addr, &size) == -1) |
| 4266 | goto tidy_up_and_fail; |
| 4267 | if (size != sizeof (connect_addr) |
| 4268 | || listen_addr.sin_family != connect_addr.sin_family |
| 4269 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr |
| 4270 | || listen_addr.sin_port != connect_addr.sin_port) { |
| 4271 | goto abort_tidy_up_and_fail; |
| 4272 | } |
| 4273 | fd[0] = connector; |
| 4274 | fd[1] = acceptor; |
| 4275 | return 0; |
| 4276 | |
| 4277 | abort_tidy_up_and_fail: |
| 4278 | errno = ECONNABORTED; /* I hope this is portable and appropriate. */ |
| 4279 | tidy_up_and_fail: |
| 4280 | { |
| 4281 | int save_errno = errno; |
| 4282 | if (listener != -1) |
| 4283 | PerlLIO_close (listener); |
| 4284 | if (connector != -1) |
| 4285 | PerlLIO_close (connector); |
| 4286 | if (acceptor != -1) |
| 4287 | PerlLIO_close (acceptor); |
| 4288 | errno = save_errno; |
| 4289 | return -1; |
| 4290 | } |
| 4291 | } |
| 4292 | #endif /* !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) */ |
| 4293 | #ifdef HAS_SOCKETPAIR |
| 4294 | /* In any case have a stub so that there's code corresponding |
| 4295 | * to the my_socketpair in global.sym. */ |
| 4296 | int |
| 4297 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { |
| 4298 | return socketpair(family, type, protocol, fd); |
| 4299 | } |
| 4300 | #endif |
| 4301 | |
| 4302 | /* |
| 4303 | |
| 4304 | =for apidoc sv_nosharing |
| 4305 | |
| 4306 | Dummy routine which "shares" an SV when there is no sharing module present. |
| 4307 | Exists to avoid test for a NULL function pointer and because it could potentially warn under |
| 4308 | some level of strict-ness. |
| 4309 | |
| 4310 | =cut |
| 4311 | */ |
| 4312 | |
| 4313 | void |
| 4314 | Perl_sv_nosharing(pTHX_ SV *sv) |
| 4315 | { |
| 4316 | } |
| 4317 | |
| 4318 | /* |
| 4319 | =for apidoc sv_nolocking |
| 4320 | |
| 4321 | Dummy routine which "locks" an SV when there is no locking module present. |
| 4322 | Exists to avoid test for a NULL function pointer and because it could potentially warn under |
| 4323 | some level of strict-ness. |
| 4324 | |
| 4325 | =cut |
| 4326 | */ |
| 4327 | |
| 4328 | void |
| 4329 | Perl_sv_nolocking(pTHX_ SV *sv) |
| 4330 | { |
| 4331 | } |
| 4332 | |
| 4333 | |
| 4334 | /* |
| 4335 | =for apidoc sv_nounlocking |
| 4336 | |
| 4337 | Dummy routine which "unlocks" an SV when there is no locking module present. |
| 4338 | Exists to avoid test for a NULL function pointer and because it could potentially warn under |
| 4339 | some level of strict-ness. |
| 4340 | |
| 4341 | =cut |
| 4342 | */ |
| 4343 | |
| 4344 | void |
| 4345 | Perl_sv_nounlocking(pTHX_ SV *sv) |
| 4346 | { |
| 4347 | } |
| 4348 | |
| 4349 | /* |
| 4350 | =for apidoc memcmp_byte_utf8 |
| 4351 | |
| 4352 | Similar to memcmp(), but the first string is with bytes, the second |
| 4353 | with utf8. Takes into account that the lengths may be different. |
| 4354 | |
| 4355 | =cut |
| 4356 | */ |
| 4357 | |
| 4358 | int |
| 4359 | Perl_memcmp_byte_utf8(pTHX_ char *sb, STRLEN lbyte, char *su, STRLEN lutf) |
| 4360 | { |
| 4361 | U8 *sbyte = (U8*)sb; |
| 4362 | U8 *sutf = (U8*)su; |
| 4363 | U8 *ebyte = sbyte + lbyte; |
| 4364 | U8 *eutf = sutf + lutf; |
| 4365 | |
| 4366 | while (sbyte < ebyte) { |
| 4367 | if (sutf >= eutf) |
| 4368 | return 1; /* utf one shorter */ |
| 4369 | if (NATIVE_IS_INVARIANT(*sbyte)) { |
| 4370 | if (*sbyte != *sutf) |
| 4371 | return *sbyte - *sutf; |
| 4372 | sbyte++; sutf++; /* CONTINUE */ |
| 4373 | } else if ((*sutf & UTF_CONTINUATION_MASK) == |
| 4374 | (*sbyte >> UTF_ACCUMULATION_SHIFT)) { |
| 4375 | if ((sutf[1] & UTF_CONTINUATION_MASK) != |
| 4376 | (*sbyte & UTF_CONTINUATION_MASK)) |
| 4377 | return (*sbyte & UTF_CONTINUATION_MASK) - |
| 4378 | (*sutf & UTF_CONTINUATION_MASK); |
| 4379 | sbyte++, sutf += 2; /* CONTINUE */ |
| 4380 | } else |
| 4381 | return (*sbyte >> UTF_ACCUMULATION_SHIFT) - |
| 4382 | (*sutf & UTF_CONTINUATION_MASK); |
| 4383 | } |
| 4384 | if (sutf >= eutf) |
| 4385 | return 0; |
| 4386 | return -1; /* byte one shorter */ |
| 4387 | } |