1 /* intrpvar.h 2 * 3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 4 * 2006, 2007, 2008 by Larry Wall and others 5 * 6 * You may distribute under the terms of either the GNU General Public 7 * License or the Artistic License, as specified in the README file. 8 * 9 */ 10 11 #include "handy.h" 12 13 /* 14 =head1 Per-Interpreter Variables 15 */ 16 17 /* These variables are per-interpreter in threaded/multiplicity builds, 18 * global otherwise. 19 20 * Don't forget to re-run regen/embed.pl to propagate changes! */ 21 22 /* New variables must be added to the very end for binary compatibility. */ 23 24 /* DON'T FORGET to add your variable also to perl_clone()! (in sv.c) */ 25 26 /* The 'I' prefix is only needed for vars that need appropriate #defines 27 * generated when built with or without MULTIPLICITY. It is also used 28 * to generate the appropriate export list for win32. If the variable 29 * needs to be initialized, use PERLVARI. 30 * 31 * When building without MULTIPLICITY, these variables will be truly global. 32 * 33 * Important ones in the first cache line (if alignment is done right) */ 34 35 PERLVAR(I, stack_sp, SV **) /* top of the stack */ 36 PERLVAR(I, op, OP *) /* currently executing op */ 37 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */ 38 39 PERLVAR(I, stack_base, SV **) 40 PERLVAR(I, stack_max, SV **) 41 42 PERLVAR(I, savestack, ANY *) /* items that need to be restored when 43 LEAVEing scopes we've ENTERed */ 44 PERLVAR(I, savestack_ix, I32) 45 PERLVAR(I, savestack_max, I32) 46 47 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */ 48 PERLVAR(I, scopestack_ix, I32) 49 PERLVAR(I, scopestack_max, I32) 50 51 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */ 52 PERLVARI(I, tmps_ix, SSize_t, -1) 53 PERLVARI(I, tmps_floor, SSize_t, -1) 54 PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */ 55 56 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */ 57 58 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're 59 remembering */ 60 PERLVAR(I, markstack_ptr, I32 *) 61 PERLVAR(I, markstack_max, I32 *) 62 63 #ifdef PERL_HASH_RANDOMIZE_KEYS 64 #ifdef USE_PERL_PERTURB_KEYS 65 PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */ 66 #endif 67 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */ 68 #endif 69 PERLVAR(I, strtab, HV *) /* shared string table */ 70 /* prog counter for the currently executing OP_MULTIDEREF Used to signal 71 * to S_find_uninit_var() where we are */ 72 PERLVAR(I, multideref_pc, UNOP_AUX_item *) 73 74 /* Fields used by magic variables such as $@, $/ and so on */ 75 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */ 76 PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */ 77 78 PERLVAR(I, tainting, bool) /* ? doing taint checks */ 79 PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */ 80 81 /* PL_delaymagic is currently used for two purposes: to assure simultaneous 82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift 83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY 84 * flag; then various places such as av_store() skip mg_set(ary) if this 85 * flag is set, and various magic vtable methods set flags like 86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when 87 * control returns to pp_push or whatever, it sees if any of those flags 88 * have been set, and if so finally calls mg_set(). 89 * 90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH 91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE 92 * in hot code like pp_push. 93 */ 94 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */ 95 96 /* 97 =for apidoc Amn|GV *|PL_defgv 98 99 The GV representing C<*_>. Useful for access to C<$_>. 100 101 =cut 102 */ 103 104 PERLVAR(I, localizing, U8) /* are we processing a local() list? */ 105 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */ 106 PERLVAR(I, defgv, GV *) /* the *_ glob */ 107 /* 108 109 =for apidoc mn|U8|PL_dowarn 110 111 The C variable that roughly corresponds to Perl's C<$^W> warning variable. 112 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a 113 collection of flag bits. 114 115 =cut 116 */ 117 118 PERLVAR(I, dowarn, U8) 119 120 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING) 121 # define PERL___I -1 122 #else 123 # define PERL___I 1 124 #endif 125 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */ 126 #undef PERL___I 127 128 /* 129 =for apidoc Amn|HV*|PL_curstash 130 131 The stash for the package code will be compiled into. 132 133 =cut 134 */ 135 136 /* Stashes */ 137 PERLVAR(I, defstash, HV *) /* main symbol table */ 138 PERLVAR(I, curstash, HV *) /* symbol table for current package */ 139 140 /* 141 =for apidoc Amn|COP*|PL_curcop 142 143 The currently active COP (control op) roughly representing the current 144 statement in the source. 145 146 =cut 147 */ 148 149 PERLVAR(I, curcop, COP *) 150 PERLVAR(I, curstack, AV *) /* THE STACK */ 151 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */ 152 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is 153 happening */ 154 155 /* memory management */ 156 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */ 157 158 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */ 159 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */ 160 161 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */ 162 PERLVARI(I, reg_curpm, PMOP*, NULL) 163 164 /* the currently active slab in a chain of slabs of regmatch states, 165 * and the currently active state within that slab. This stack of states 166 * is shared amongst re-entrant calls to the regex engine */ 167 168 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL) 169 PERLVAR(I, regmatch_state, regmatch_state *) 170 171 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */ 172 173 /* 174 =for apidoc Amn|SV|PL_sv_undef 175 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>. 176 177 =for apidoc Amn|SV|PL_sv_no 178 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as 179 C<&PL_sv_no>. 180 181 =for apidoc Amn|SV|PL_sv_yes 182 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as 183 C<&PL_sv_yes>. 184 185 =for apidoc Amn|SV|PL_sv_zero 186 This readonly SV has a zero numeric value and a C<"0"> string value. It's 187 similar to C<L</PL_sv_no>> except for its string value. Can be used as a 188 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as 189 C<&PL_sv_zero>. Introduced in 5.28. 190 191 =cut 192 */ 193 194 #ifdef MULTIPLICITY 195 PERLVAR(I, sv_yes, SV) 196 PERLVAR(I, sv_undef, SV) 197 PERLVAR(I, sv_no, SV) 198 PERLVAR(I, sv_zero, SV) 199 #else 200 /* store the immortals as an array to ensure they are contiguous in 201 * memory: makes SvIMMORTAL_INTERP(sv) possible */ 202 PERLVARA(I, sv_immortals, 4, SV) 203 #endif 204 205 PERLVAR(I, padname_undef, PADNAME) 206 PERLVAR(I, padname_const, PADNAME) 207 PERLVAR(I, Sv, SV *) /* used to hold temporary values */ 208 PERLVAR(I, parser, yy_parser *) /* current parser state */ 209 210 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */ 211 212 213 /* 214 =for apidoc Amn|STRLEN|PL_na 215 216 A convenience variable which is typically used with C<SvPV> when one 217 doesn't care about the length of the string. It is usually more efficient 218 to either declare a local variable and use that instead or to use the 219 C<SvPV_nolen> macro. 220 221 =cut 222 */ 223 224 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is 225 Not Applicable */ 226 227 /* stat stuff */ 228 PERLVAR(I, statcache, Stat_t) /* _ */ 229 PERLVAR(I, statgv, GV *) 230 PERLVARI(I, statname, SV *, NULL) 231 232 /* 233 =for apidoc mn|SV*|PL_rs 234 235 The input record separator - C<$/> in Perl space. 236 237 =for apidoc mn|GV*|PL_last_in_gv 238 239 The GV which was last used for a filehandle input operation. (C<< <FH> >>) 240 241 =for apidoc mn|GV*|PL_ofsgv 242 243 The glob containing the output field separator - C<*,> in Perl space. 244 245 =cut 246 */ 247 248 PERLVAR(I, rs, SV *) /* input record separator $/ */ 249 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */ 250 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */ 251 PERLVAR(I, defoutgv, GV *) /* default FH for output */ 252 PERLVARI(I, chopset, const char *, " \n-") /* $: */ 253 PERLVAR(I, formtarget, SV *) 254 PERLVAR(I, bodytarget, SV *) 255 PERLVAR(I, toptarget, SV *) 256 257 258 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */ 259 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */ 260 261 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */ 262 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */ 263 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */ 264 265 /* statics "owned" by various functions */ 266 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */ 267 268 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */ 269 270 /* sort stuff */ 271 PERLVAR(I, sortcop, OP *) /* user defined sort routine */ 272 PERLVAR(I, sortstash, HV *) /* which is in some package or other */ 273 PERLVAR(I, firstgv, GV *) /* $a */ 274 PERLVAR(I, secondgv, GV *) /* $b */ 275 276 /* float buffer */ 277 PERLVAR(I, efloatbuf, char *) 278 PERLVAR(I, efloatsize, STRLEN) 279 280 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump 281 indentation level */ 282 283 /* 284 =for apidoc Amn|U8|PL_exit_flags 285 286 Contains flags controlling perl's behaviour on exit(): 287 288 =over 289 290 =item * C<PERL_EXIT_DESTRUCT_END> 291 292 If set, END blocks are executed when the interpreter is destroyed. 293 This is normally set by perl itself after the interpreter is 294 constructed. 295 296 =item * C<PERL_EXIT_ABORT> 297 298 Call C<abort()> on exit. This is used internally by perl itself to 299 abort if exit is called while processing exit. 300 301 =item * C<PERL_EXIT_WARN> 302 303 Warn on exit. 304 305 =item * C<PERL_EXIT_EXPECTED> 306 307 Set by the L<perlfunc/exit> operator. 308 309 =back 310 311 =for apidoc Amnh||PERL_EXIT_EXPECTED 312 =for apidoc Amnh||PERL_EXIT_ABORT 313 =for apidoc Amnh||PERL_EXIT_DESTRUCT_END 314 =for apidoc Amnh||PERL_EXIT_WARN 315 316 =cut 317 */ 318 319 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */ 320 321 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */ 322 PERLVAR(I, in_utf8_CTYPE_locale, bool) 323 PERLVAR(I, in_utf8_COLLATE_locale, bool) 324 PERLVAR(I, in_utf8_turkic_locale, bool) 325 #if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE) 326 PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */ 327 #endif 328 PERLVARA(I, locale_utf8ness, 256, char) 329 330 #ifdef USE_LOCALE_CTYPE 331 PERLVAR(I, warn_locale, SV *) 332 #endif 333 334 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */ 335 336 /* 337 =for apidoc Amn|peep_t|PL_peepp 338 339 Pointer to the per-subroutine peephole optimiser. This is a function 340 that gets called at the end of compilation of a Perl subroutine (or 341 equivalently independent piece of Perl code) to perform fixups of 342 some ops and to perform small-scale optimisations. The function is 343 called once for each subroutine that is compiled, and is passed, as sole 344 parameter, a pointer to the op that is the entry point to the subroutine. 345 It modifies the op tree in place. 346 347 The peephole optimiser should never be completely replaced. Rather, 348 add code to it by wrapping the existing optimiser. The basic way to do 349 this can be seen in L<perlguts/Compile pass 3: peephole optimization>. 350 If the new code wishes to operate on ops throughout the subroutine's 351 structure, rather than just at the top level, it is likely to be more 352 convenient to wrap the L</PL_rpeepp> hook. 353 354 =cut 355 */ 356 357 PERLVARI(I, peepp, peep_t, Perl_peep) 358 359 /* 360 =for apidoc Amn|peep_t|PL_rpeepp 361 362 Pointer to the recursive peephole optimiser. This is a function 363 that gets called at the end of compilation of a Perl subroutine (or 364 equivalently independent piece of Perl code) to perform fixups of some 365 ops and to perform small-scale optimisations. The function is called 366 once for each chain of ops linked through their C<op_next> fields; 367 it is recursively called to handle each side chain. It is passed, as 368 sole parameter, a pointer to the op that is at the head of the chain. 369 It modifies the op tree in place. 370 371 The peephole optimiser should never be completely replaced. Rather, 372 add code to it by wrapping the existing optimiser. The basic way to do 373 this can be seen in L<perlguts/Compile pass 3: peephole optimization>. 374 If the new code wishes to operate only on ops at a subroutine's top level, 375 rather than throughout the structure, it is likely to be more convenient 376 to wrap the L</PL_peepp> hook. 377 378 =cut 379 */ 380 381 PERLVARI(I, rpeepp, peep_t, Perl_rpeep) 382 383 /* 384 =for apidoc Amn|Perl_ophook_t|PL_opfreehook 385 386 When non-C<NULL>, the function pointed by this variable will be called each time an OP is freed with the corresponding OP as the argument. 387 This allows extensions to free any extra attribute they have locally attached to an OP. 388 It is also assured to first fire for the parent OP and then for its kids. 389 390 When you replace this variable, it is considered a good practice to store the possibly previously installed hook and that you recall it inside your own. 391 392 =cut 393 */ 394 395 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */ 396 397 PERLVARI(I, watchaddr, char **, 0) 398 PERLVAR(I, watchok, char *) 399 400 PERLVAR(I, perldb, U32) 401 402 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */ 403 404 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */ 405 406 /* pseudo environmental stuff */ 407 PERLVAR(I, origargc, int) 408 PERLVAR(I, origargv, char **) 409 PERLVAR(I, envgv, GV *) 410 PERLVAR(I, incgv, GV *) 411 PERLVAR(I, hintgv, GV *) 412 PERLVAR(I, origfilename, char *) 413 PERLVARI(I, xsubfilename, const char *, NULL) 414 PERLVAR(I, diehook, SV *) 415 PERLVAR(I, warnhook, SV *) 416 417 /* switches */ 418 PERLVAR(I, patchlevel, SV *) 419 PERLVAR(I, localpatches, const char * const *) 420 PERLVARI(I, splitstr, const char *, " ") 421 422 PERLVAR(I, minus_c, bool) 423 PERLVAR(I, minus_n, bool) 424 PERLVAR(I, minus_p, bool) 425 PERLVAR(I, minus_l, bool) 426 PERLVAR(I, minus_a, bool) 427 PERLVAR(I, minus_F, bool) 428 PERLVAR(I, doswitches, bool) 429 PERLVAR(I, minus_E, bool) 430 431 PERLVAR(I, inplace, char *) 432 PERLVAR(I, e_script, SV *) 433 434 PERLVAR(I, basetime, Time_t) /* $^T */ 435 436 PERLVARI(I, maxsysfd, I32, MAXSYSFD) 437 /* top fd to pass to subprocesses */ 438 PERLVAR(I, statusvalue, I32) /* $? */ 439 #ifdef VMS 440 PERLVAR(I, statusvalue_vms, U32) 441 #else 442 PERLVAR(I, statusvalue_posix, I32) 443 #endif 444 445 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */ 446 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */ 447 448 /* shortcuts to various I/O objects */ 449 PERLVAR(I, stdingv, GV *) /* *STDIN */ 450 PERLVAR(I, stderrgv, GV *) /* *STDERR */ 451 PERLVAR(I, argvgv, GV *) /* *ARGV */ 452 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */ 453 PERLVAR(I, argvout_stack, AV *) 454 455 /* shortcuts to regexp stuff */ 456 PERLVAR(I, replgv, GV *) /* *^R */ 457 458 /* shortcuts to misc objects */ 459 PERLVAR(I, errgv, GV *) /* *@ */ 460 461 /* shortcuts to debugging objects */ 462 PERLVAR(I, DBgv, GV *) /* *DB::DB */ 463 PERLVAR(I, DBline, GV *) /* *DB::line */ 464 465 /* 466 =for apidoc mn|GV *|PL_DBsub 467 When Perl is run in debugging mode, with the B<-d> switch, this GV contains 468 the SV which holds the name of the sub being debugged. This is the C 469 variable which corresponds to Perl's $DB::sub variable. See 470 C<L</PL_DBsingle>>. 471 472 =for apidoc mn|SV *|PL_DBsingle 473 When Perl is run in debugging mode, with the B<-d> switch, this SV is a 474 boolean which indicates whether subs are being single-stepped. 475 Single-stepping is automatically turned on after every step. This is the C 476 variable which corresponds to Perl's $DB::single variable. See 477 C<L</PL_DBsub>>. 478 479 =for apidoc mn|SV *|PL_DBtrace 480 Trace variable used when Perl is run in debugging mode, with the B<-d> 481 switch. This is the C variable which corresponds to Perl's $DB::trace 482 variable. See C<L</PL_DBsingle>>. 483 484 =cut 485 */ 486 487 PERLVAR(I, DBsub, GV *) /* *DB::sub */ 488 PERLVAR(I, DBsingle, SV *) /* $DB::single */ 489 PERLVAR(I, DBtrace, SV *) /* $DB::trace */ 490 PERLVAR(I, DBsignal, SV *) /* $DB::signal */ 491 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */ 492 493 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */ 494 495 /* symbol tables */ 496 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */ 497 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */ 498 PERLVAR(I, curstname, SV *) /* name of current package */ 499 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */ 500 PERLVAR(I, endav, AV *) /* names of END subroutines */ 501 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */ 502 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */ 503 PERLVAR(I, initav, AV *) /* names of INIT subroutines */ 504 505 /* subprocess state */ 506 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */ 507 508 /* internal state */ 509 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */ 510 511 /* current interpreter roots */ 512 PERLVAR(I, main_cv, CV *) 513 PERLVAR(I, main_root, OP *) 514 PERLVAR(I, main_start, OP *) 515 PERLVAR(I, eval_root, OP *) 516 PERLVAR(I, eval_start, OP *) 517 518 /* runtime control stuff */ 519 PERLVARI(I, curcopdb, COP *, NULL) 520 521 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */ 522 PERLVAR(I, lastfd, int) /* what to preserve mode on */ 523 PERLVAR(I, oldname, char *) /* what to preserve mode on */ 524 /* Elements in this array have ';' appended and are injected as a single line 525 into the tokeniser. You can't put any (literal) newlines into any program 526 you stuff in into this array, as the point where it's injected is expecting 527 a single physical line. */ 528 PERLVAR(I, preambleav, AV *) 529 PERLVAR(I, mess_sv, SV *) 530 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */ 531 532 /* funky return mechanisms */ 533 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */ 534 535 /* statics moved here for shared library purposes */ 536 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */ 537 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */ 538 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */ 539 PERLVARI(I, laststype, U16, OP_STAT) 540 541 PERLVARI(I, laststatval, int, -1) 542 543 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in 544 assignment? */ 545 546 /* interpreter atexit processing */ 547 PERLVARI(I, exitlistlen, I32, 0) /* length of same */ 548 PERLVARI(I, exitlist, PerlExitListEntry *, NULL) 549 /* list of exit functions */ 550 551 /* 552 =for apidoc Amn|HV*|PL_modglobal 553 554 C<PL_modglobal> is a general purpose, interpreter global HV for use by 555 extensions that need to keep information on a per-interpreter basis. 556 In a pinch, it can also be used as a symbol table for extensions 557 to share data among each other. It is a good idea to use keys 558 prefixed by the package name of the extension that owns the data. 559 560 =cut 561 */ 562 563 PERLVAR(I, modglobal, HV *) /* per-interp module data */ 564 565 /* these used to be in global before 5.004_68 */ 566 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */ 567 568 PERLVAR(I, compiling, COP) /* compiling/done executing marker */ 569 570 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */ 571 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */ 572 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */ 573 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */ 574 575 #ifdef HAVE_INTERP_INTERN 576 PERLVAR(I, sys_intern, struct interp_intern) 577 /* platform internals */ 578 #endif 579 580 /* more statics moved here */ 581 PERLVAR(I, DBcv, CV *) /* from perl.c */ 582 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN 583 compile-time common elem detection */ 584 585 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */ 586 587 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */ 588 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */ 589 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */ 590 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */ 591 592 593 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */ 594 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */ 595 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */ 596 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */ 597 PERLVARI(I, an, U32, 0) /* malloc sequence number */ 598 599 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */ 600 PERLVARI(I, breakable_sub_gen, U32, 0) 601 602 #ifdef DEBUGGING 603 /* exercise wrap-around */ 604 #define PERL_COP_SEQMAX (U32_MAX-50) 605 #else 606 #define PERL_COP_SEQMAX 0 607 #endif 608 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */ 609 #undef PERL_COP_SEQMAX 610 611 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */ 612 PERLVAR(I, origalen, U32) 613 PERLVAR(I, origenviron, char **) 614 #ifdef PERL_USES_PL_PIDSTATUS 615 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */ 616 #endif 617 PERLVAR(I, osname, char *) /* operating system */ 618 619 PERLVAR(I, sighandlerp, Sighandler_t) 620 /* these two are provided only to solve library linkage issues; they 621 * should not be hooked by user code */ 622 PERLVAR(I, sighandler1p, Sighandler1_t) 623 PERLVAR(I, sighandler3p, Sighandler3_t) 624 625 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */ 626 627 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */ 628 629 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */ 630 631 /* 632 =for apidoc Amn|runops_proc_t|PL_runops 633 634 See L<perlguts/Pluggable runops>. 635 636 =cut 637 */ 638 639 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT) 640 641 PERLVAR(I, subname, SV *) /* name of current subroutine */ 642 643 PERLVAR(I, subline, I32) /* line this subroutine began on */ 644 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */ 645 646 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */ 647 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1 648 in current "register" pad */ 649 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */ 650 651 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */ 652 653 #if defined(USE_POSIX_2008_LOCALE) \ 654 && defined(USE_THREAD_SAFE_LOCALE) \ 655 && ! defined(HAS_QUERYLOCALE) 656 657 PERLVARA(I, curlocales, 12, char *) 658 659 #endif 660 #ifdef USE_LOCALE_COLLATE 661 662 PERLVAR(I, collation_name, char *) /* Name of current collation */ 663 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */ 664 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */ 665 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */ 666 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */ 667 PERLVARI(I, strxfrm_is_behaved, bool, TRUE) 668 /* Assume until proven otherwise that it works */ 669 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */ 670 PERLVARI(I, collation_standard, bool, TRUE) 671 /* Assume simple collation */ 672 #endif /* USE_LOCALE_COLLATE */ 673 674 PERLVARI(I, langinfo_buf, char *, NULL) 675 PERLVARI(I, langinfo_bufsize, Size_t, 0) 676 PERLVARI(I, setlocale_buf, char *, NULL) 677 PERLVARI(I, setlocale_bufsize, Size_t, 0) 678 679 #ifdef PERL_SAWAMPERSAND 680 PERLVAR(I, sawampersand, U8) /* must save all match strings */ 681 #endif 682 683 PERLVAR(I, unsafe, bool) 684 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */ 685 686 /* current phase the interpreter is in 687 for ordering this structure to remove holes, we're assuming that this is 4 688 bytes. */ 689 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT) 690 691 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */ 692 693 /* 694 =for apidoc Amn|signed char|PL_perl_destruct_level 695 696 This value may be set when embedding for full cleanup. 697 698 Possible values: 699 700 =over 701 702 =item * 0 - none 703 704 =item * 1 - full 705 706 =item * 2 or greater - full with checks. 707 708 =back 709 710 If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the 711 value of C<PL_perl_destruct_level> its value is used instead. 712 713 =cut 714 */ 715 /* mod_perl is special, and also assigns a meaning -1 */ 716 PERLVARI(I, perl_destruct_level, signed char, 0) 717 718 #ifdef USE_LOCALE_NUMERIC 719 720 PERLVARI(I, numeric_standard, int, TRUE) 721 /* Assume C locale numerics */ 722 PERLVARI(I, numeric_underlying, bool, TRUE) 723 /* Assume underlying locale numerics */ 724 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE) 725 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */ 726 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */ 727 728 # ifdef HAS_POSIX_2008_LOCALE 729 730 PERLVARI(I, underlying_numeric_obj, locale_t, NULL) 731 732 # endif 733 #endif /* !USE_LOCALE_NUMERIC */ 734 735 #ifdef FCRYPT 736 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */ 737 #else 738 /* One byte hole in the interpreter structure. */ 739 #endif 740 741 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */ 742 PERLVAR(I, srand_called, bool) 743 744 /* Array of signal handlers, indexed by signal number, through which the C 745 signal handler dispatches. */ 746 PERLVAR(I, psig_ptr, SV **) 747 /* Array of names of signals, indexed by signal number, for (re)use as the first 748 argument to a signal handler. Only one block of memory is allocated for 749 both psig_name and psig_ptr. */ 750 PERLVAR(I, psig_name, SV **) 751 752 #if defined(PERL_IMPLICIT_SYS) 753 PERLVAR(I, Mem, struct IPerlMem *) 754 PERLVAR(I, MemShared, struct IPerlMem *) 755 PERLVAR(I, MemParse, struct IPerlMem *) 756 PERLVAR(I, Env, struct IPerlEnv *) 757 PERLVAR(I, StdIO, struct IPerlStdIO *) 758 PERLVAR(I, LIO, struct IPerlLIO *) 759 PERLVAR(I, Dir, struct IPerlDir *) 760 PERLVAR(I, Sock, struct IPerlSock *) 761 PERLVAR(I, Proc, struct IPerlProc *) 762 #endif 763 764 PERLVAR(I, ptr_table, PTR_TBL_t *) 765 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */ 766 767 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */ 768 769 770 #if defined(USE_ITHREADS) 771 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of 772 regex_padav */ 773 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the 774 values in op_pmoffset of pmop. 775 Entry 0 is an SV whose PV is a 776 "packed" list of IVs listing 777 the now-free slots in the array */ 778 PERLVAR(I, stashpad, HV **) /* for CopSTASH */ 779 PERLVARI(I, stashpadmax, PADOFFSET, 64) 780 PERLVARI(I, stashpadix, PADOFFSET, 0) 781 #endif 782 783 #ifdef USE_REENTRANT_API 784 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */ 785 #endif 786 787 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */ 788 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */ 789 790 #ifdef PERLIO_LAYERS 791 PERLVARI(I, perlio, PerlIOl *, NULL) 792 PERLVARI(I, known_layers, PerlIO_list_t *, NULL) 793 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL) 794 #endif 795 796 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */ 797 PERLVARI(I, unitcheckav_save, AV *, NULL) 798 /* save UNITCHECK{}s when compiling */ 799 800 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */ 801 802 /* Hooks to shared SVs and locks. */ 803 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing) 804 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing) 805 806 GCC_DIAG_IGNORE(-Wdeprecated-declarations) 807 #ifdef NO_MATHOMS 808 # define PERL_UNLOCK_HOOK Perl_sv_nosharing 809 #else 810 /* This reference ensures that the mathoms are linked with perl */ 811 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking 812 #endif 813 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK) 814 815 GCC_DIAG_RESTORE 816 817 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook) 818 819 /* Can shared object be destroyed */ 820 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable) 821 822 #ifndef PERL_MICRO 823 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals) 824 #endif 825 826 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */ 827 828 /* Register of known Method Resolution Orders. 829 What this actually points to is an implementation detail (it may change to 830 a structure incorporating a reference count - use mro_get_from_name to 831 retrieve a C<struct mro_alg *> */ 832 PERLVAR(I, registered_mros, HV *) 833 834 /* Compile-time block start/end hooks */ 835 PERLVAR(I, blockhooks, AV *) 836 837 PERLVAR(I, custom_ops, HV *) /* custom op registrations */ 838 839 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */ 840 841 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be 842 present always, as -DDEBUGGING must be binary compatible with non. */ 843 PERLVARI(I, scopestack_name, const char * *, NULL) 844 845 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */ 846 847 /* Hook for File::Glob */ 848 PERLVARI(I, globhook, globhook_t, NULL) 849 850 /* The last unconditional member of the interpreter structure when 5.18.0 was 851 released. The offset of the end of this is baked into a global variable in 852 any shared perl library which will allow a sanity test in future perl 853 releases. */ 854 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook 855 856 #ifdef PERL_IMPLICIT_CONTEXT 857 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */ 858 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */ 859 #endif 860 861 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW) 862 /* For use with the memory debugging code in util.c. This is used only in 863 * DEBUGGING builds (as long as the relevant structure is defined), but 864 * defining it in non-debug builds too means that we retain binary 865 * compatibility between otherwise-compatible plain and debug builds. */ 866 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header) 867 #endif 868 869 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP 870 /* File descriptor to talk to the child which dumps scalars. */ 871 PERLVARI(I, dumper_fd, int, -1) 872 #endif 873 874 875 #ifdef DEBUG_LEAKING_SCALARS 876 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */ 877 #endif 878 879 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */ 880 881 #ifdef PERL_TRACE_OPS 882 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type. 883 If PERL_TRACE_OPS is enabled, we'll dump 884 a summary count of all ops executed in the 885 program at perl_destruct time. For 886 profiling/debugging only. Works only if 887 DEBUGGING is enabled, too. */ 888 #endif 889 890 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE) 891 892 PERLVARI(I, dump_re_max_len, STRLEN, 60) 893 894 /* For internal uses of randomness, this ensures the sequence of 895 * random numbers returned by rand() isn't modified by perl's internal 896 * use of randomness. 897 * This is important if the user has called srand() with a seed. 898 */ 899 900 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE) 901 902 PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char) 903 904 PERLVAR(I, AboveLatin1, SV *) 905 PERLVAR(I, Assigned_invlist, SV *) 906 PERLVAR(I, GCB_invlist, SV *) 907 PERLVAR(I, HasMultiCharFold, SV *) 908 PERLVAR(I, InMultiCharFold, SV *) 909 PERLVAR(I, Latin1, SV *) 910 PERLVAR(I, LB_invlist, SV *) 911 PERLVAR(I, SB_invlist, SV *) 912 PERLVAR(I, SCX_invlist, SV *) 913 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */ 914 915 /* List of characters that participate in any fold defined by Unicode */ 916 PERLVAR(I, in_some_fold, SV *) 917 918 /* Everything that folds to a given character, for case insensitivity regex 919 * matching */ 920 PERLVAR(I, utf8_foldclosures, SV *) 921 922 PERLVAR(I, utf8_idcont, SV *) 923 PERLVAR(I, utf8_idstart, SV *) 924 PERLVAR(I, utf8_perl_idcont, SV *) 925 PERLVAR(I, utf8_perl_idstart, SV *) 926 PERLVAR(I, utf8_xidcont, SV *) 927 PERLVAR(I, utf8_xidstart, SV *) 928 PERLVAR(I, WB_invlist, SV *) 929 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *) 930 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *) 931 PERLVAR(I, utf8_toupper, SV *) 932 PERLVAR(I, utf8_totitle, SV *) 933 PERLVAR(I, utf8_tolower, SV *) 934 PERLVAR(I, utf8_tofold, SV *) 935 PERLVAR(I, utf8_tosimplefold, SV *) 936 PERLVAR(I, utf8_charname_begin, SV *) 937 PERLVAR(I, utf8_charname_continue, SV *) 938 PERLVAR(I, utf8_mark, SV *) 939 PERLVARI(I, InBitmap, SV *, NULL) 940 PERLVAR(I, CCC_non0_non230, SV *) 941 PERLVAR(I, Private_Use, SV *) 942 943 #ifdef HAS_MBRLEN 944 PERLVAR(I, mbrlen_ps, mbstate_t) 945 #endif 946 #ifdef HAS_MBRTOWC 947 PERLVAR(I, mbrtowc_ps, mbstate_t) 948 #endif 949 #ifdef HAS_WCRTOMB 950 PERLVAR(I, wcrtomb_ps, mbstate_t) 951 #endif 952 953 /* If you are adding a U8 or U16, check to see if there are 'Space' comments 954 * above on where there are gaps which currently will be structure padding. */ 955 956 /* Within a stable branch, new variables must be added to the very end, before 957 * this comment, for binary compatibility (the offsets of the old members must 958 * not change). 959 * (Don't forget to add your variable also to perl_clone()!) 960 * XSUB.h provides wrapper functions via perlapi.h that make this 961 * irrelevant, but not all code may be expected to #include XSUB.h. 962 */ 963