| 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) |
| 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 | |
| 71 | /* Fields used by magic variables such as $@, $/ and so on */ |
| 72 | PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */ |
| 73 | |
| 74 | PERLVAR(I, tainting, bool) /* doing taint checks */ |
| 75 | PERLVAR(I, tainted, bool) /* using variables controlled by $< */ |
| 76 | PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */ |
| 77 | PERLVAR(I, localizing, U8) /* are we processing a local() list? */ |
| 78 | PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */ |
| 79 | PERLVAR(I, defgv, GV *) /* the *_ glob */ |
| 80 | /* |
| 81 | |
| 82 | =for apidoc mn|bool|PL_dowarn |
| 83 | |
| 84 | The C variable which corresponds to Perl's $^W warning variable. |
| 85 | |
| 86 | =cut |
| 87 | */ |
| 88 | |
| 89 | PERLVAR(I, dowarn, U8) |
| 90 | |
| 91 | #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING) |
| 92 | # define PERL___I -1 |
| 93 | #else |
| 94 | # define PERL___I 1 |
| 95 | #endif |
| 96 | PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */ |
| 97 | #undef PERL___I |
| 98 | |
| 99 | |
| 100 | /* Stashes */ |
| 101 | PERLVAR(I, defstash, HV *) /* main symbol table */ |
| 102 | PERLVAR(I, curstash, HV *) /* symbol table for current package */ |
| 103 | |
| 104 | PERLVAR(I, curcop, COP *) |
| 105 | PERLVAR(I, curstack, AV *) /* THE STACK */ |
| 106 | PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */ |
| 107 | PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is |
| 108 | happening */ |
| 109 | |
| 110 | /* memory management */ |
| 111 | PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */ |
| 112 | |
| 113 | PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */ |
| 114 | PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */ |
| 115 | |
| 116 | /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */ |
| 117 | PERLVARI(I, reg_curpm, PMOP*, NULL) |
| 118 | |
| 119 | /* the currently active slab in a chain of slabs of regmatch states, |
| 120 | * and the currently active state within that slab. This stack of states |
| 121 | * is shared amongst re-entrant calls to the regex engine */ |
| 122 | |
| 123 | PERLVARI(I, regmatch_slab, regmatch_slab *, NULL) |
| 124 | PERLVAR(I, regmatch_state, regmatch_state *) |
| 125 | |
| 126 | PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */ |
| 127 | |
| 128 | /* |
| 129 | =for apidoc Amn|SV|PL_sv_undef |
| 130 | This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>. |
| 131 | |
| 132 | =for apidoc Amn|SV|PL_sv_no |
| 133 | This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as |
| 134 | C<&PL_sv_no>. |
| 135 | |
| 136 | =for apidoc Amn|SV|PL_sv_yes |
| 137 | This is the C<true> SV. See C<PL_sv_no>. Always refer to this as |
| 138 | C<&PL_sv_yes>. |
| 139 | |
| 140 | =cut |
| 141 | */ |
| 142 | |
| 143 | PERLVAR(I, sv_undef, SV) |
| 144 | PERLVAR(I, sv_no, SV) |
| 145 | PERLVAR(I, sv_yes, SV) |
| 146 | PERLVAR(I, Sv, SV *) /* used to hold temporary values */ |
| 147 | |
| 148 | PERLVAR(I, parser, yy_parser *) /* current parser state */ |
| 149 | |
| 150 | PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */ |
| 151 | |
| 152 | |
| 153 | /* |
| 154 | =for apidoc Amn|STRLEN|PL_na |
| 155 | |
| 156 | A convenience variable which is typically used with C<SvPV> when one |
| 157 | doesn't care about the length of the string. It is usually more efficient |
| 158 | to either declare a local variable and use that instead or to use the |
| 159 | C<SvPV_nolen> macro. |
| 160 | |
| 161 | =cut |
| 162 | */ |
| 163 | |
| 164 | PERLVAR(I, na, STRLEN) /* for use in SvPV when length is |
| 165 | Not Applicable */ |
| 166 | |
| 167 | /* stat stuff */ |
| 168 | PERLVAR(I, statbuf, Stat_t) |
| 169 | PERLVAR(I, statcache, Stat_t) /* _ */ |
| 170 | PERLVAR(I, statgv, GV *) |
| 171 | PERLVARI(I, statname, SV *, NULL) |
| 172 | |
| 173 | #ifdef HAS_TIMES |
| 174 | /* Will be removed soon after v5.21.2. See RT #121351 */ |
| 175 | PERLVAR(I, timesbuf, struct tms) |
| 176 | #endif |
| 177 | |
| 178 | /* |
| 179 | =for apidoc mn|SV*|PL_rs |
| 180 | |
| 181 | The input record separator - C<$/> in Perl space. |
| 182 | |
| 183 | =for apidoc mn|GV*|PL_last_in_gv |
| 184 | |
| 185 | The GV which was last used for a filehandle input operation. (C<< <FH> >>) |
| 186 | |
| 187 | =for apidoc mn|GV*|PL_ofsgv |
| 188 | |
| 189 | The glob containing the output field separator - C<*,> in Perl space. |
| 190 | |
| 191 | =cut |
| 192 | */ |
| 193 | |
| 194 | PERLVAR(I, rs, SV *) /* input record separator $/ */ |
| 195 | PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */ |
| 196 | PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */ |
| 197 | PERLVAR(I, defoutgv, GV *) /* default FH for output */ |
| 198 | PERLVARI(I, chopset, const char *, " \n-") /* $: */ |
| 199 | PERLVAR(I, formtarget, SV *) |
| 200 | PERLVAR(I, bodytarget, SV *) |
| 201 | PERLVAR(I, toptarget, SV *) |
| 202 | |
| 203 | |
| 204 | PERLVAR(I, restartop, OP *) /* propagating an error from croak? */ |
| 205 | PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */ |
| 206 | |
| 207 | PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */ |
| 208 | PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */ |
| 209 | PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */ |
| 210 | |
| 211 | /* statics "owned" by various functions */ |
| 212 | PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */ |
| 213 | |
| 214 | PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */ |
| 215 | |
| 216 | /* sort stuff */ |
| 217 | PERLVAR(I, sortcop, OP *) /* user defined sort routine */ |
| 218 | PERLVAR(I, sortstash, HV *) /* which is in some package or other */ |
| 219 | PERLVAR(I, firstgv, GV *) /* $a */ |
| 220 | PERLVAR(I, secondgv, GV *) /* $b */ |
| 221 | |
| 222 | /* float buffer */ |
| 223 | PERLVAR(I, efloatbuf, char *) |
| 224 | PERLVAR(I, efloatsize, STRLEN) |
| 225 | |
| 226 | PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump |
| 227 | indentation level */ |
| 228 | |
| 229 | PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */ |
| 230 | |
| 231 | PERLVAR(I, utf8locale, bool) /* utf8 locale detected */ |
| 232 | PERLVAR(I, in_utf8_CTYPE_locale, bool) |
| 233 | |
| 234 | PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */ |
| 235 | |
| 236 | /* |
| 237 | =for apidoc Amn|peep_t|PL_peepp |
| 238 | |
| 239 | Pointer to the per-subroutine peephole optimiser. This is a function |
| 240 | that gets called at the end of compilation of a Perl subroutine (or |
| 241 | equivalently independent piece of Perl code) to perform fixups of |
| 242 | some ops and to perform small-scale optimisations. The function is |
| 243 | called once for each subroutine that is compiled, and is passed, as sole |
| 244 | parameter, a pointer to the op that is the entry point to the subroutine. |
| 245 | It modifies the op tree in place. |
| 246 | |
| 247 | The peephole optimiser should never be completely replaced. Rather, |
| 248 | add code to it by wrapping the existing optimiser. The basic way to do |
| 249 | this can be seen in L<perlguts/Compile pass 3: peephole optimization>. |
| 250 | If the new code wishes to operate on ops throughout the subroutine's |
| 251 | structure, rather than just at the top level, it is likely to be more |
| 252 | convenient to wrap the L</PL_rpeepp> hook. |
| 253 | |
| 254 | =cut |
| 255 | */ |
| 256 | |
| 257 | PERLVARI(I, peepp, peep_t, Perl_peep) |
| 258 | |
| 259 | /* |
| 260 | =for apidoc Amn|peep_t|PL_rpeepp |
| 261 | |
| 262 | Pointer to the recursive peephole optimiser. This is a function |
| 263 | that gets called at the end of compilation of a Perl subroutine (or |
| 264 | equivalently independent piece of Perl code) to perform fixups of some |
| 265 | ops and to perform small-scale optimisations. The function is called |
| 266 | once for each chain of ops linked through their C<op_next> fields; |
| 267 | it is recursively called to handle each side chain. It is passed, as |
| 268 | sole parameter, a pointer to the op that is at the head of the chain. |
| 269 | It modifies the op tree in place. |
| 270 | |
| 271 | The peephole optimiser should never be completely replaced. Rather, |
| 272 | add code to it by wrapping the existing optimiser. The basic way to do |
| 273 | this can be seen in L<perlguts/Compile pass 3: peephole optimization>. |
| 274 | If the new code wishes to operate only on ops at a subroutine's top level, |
| 275 | rather than throughout the structure, it is likely to be more convenient |
| 276 | to wrap the L</PL_peepp> hook. |
| 277 | |
| 278 | =cut |
| 279 | */ |
| 280 | |
| 281 | PERLVARI(I, rpeepp, peep_t, Perl_rpeep) |
| 282 | |
| 283 | /* |
| 284 | =for apidoc Amn|Perl_ophook_t|PL_opfreehook |
| 285 | |
| 286 | 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. |
| 287 | This allows extensions to free any extra attribute they have locally attached to an OP. |
| 288 | It is also assured to first fire for the parent OP and then for its kids. |
| 289 | |
| 290 | 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. |
| 291 | |
| 292 | =cut |
| 293 | */ |
| 294 | |
| 295 | PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */ |
| 296 | |
| 297 | PERLVARI(I, watchaddr, char **, 0) |
| 298 | PERLVAR(I, watchok, char *) |
| 299 | |
| 300 | PERLVAR(I, perldb, U32) |
| 301 | |
| 302 | PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */ |
| 303 | |
| 304 | PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */ |
| 305 | |
| 306 | /* pseudo environmental stuff */ |
| 307 | PERLVAR(I, origargc, int) |
| 308 | PERLVAR(I, origargv, char **) |
| 309 | PERLVAR(I, envgv, GV *) |
| 310 | PERLVAR(I, incgv, GV *) |
| 311 | PERLVAR(I, hintgv, GV *) |
| 312 | PERLVAR(I, origfilename, char *) |
| 313 | PERLVAR(I, diehook, SV *) |
| 314 | PERLVAR(I, warnhook, SV *) |
| 315 | |
| 316 | /* switches */ |
| 317 | PERLVAR(I, patchlevel, SV *) |
| 318 | PERLVAR(I, apiversion, SV *) |
| 319 | PERLVAR(I, localpatches, const char * const *) |
| 320 | PERLVARI(I, splitstr, const char *, " ") |
| 321 | |
| 322 | PERLVAR(I, minus_c, bool) |
| 323 | PERLVAR(I, minus_n, bool) |
| 324 | PERLVAR(I, minus_p, bool) |
| 325 | PERLVAR(I, minus_l, bool) |
| 326 | PERLVAR(I, minus_a, bool) |
| 327 | PERLVAR(I, minus_F, bool) |
| 328 | PERLVAR(I, doswitches, bool) |
| 329 | PERLVAR(I, minus_E, bool) |
| 330 | |
| 331 | PERLVAR(I, inplace, char *) |
| 332 | PERLVAR(I, e_script, SV *) |
| 333 | |
| 334 | PERLVAR(I, basetime, Time_t) /* $^T */ |
| 335 | |
| 336 | PERLVARI(I, maxsysfd, I32, MAXSYSFD) |
| 337 | /* top fd to pass to subprocesses */ |
| 338 | PERLVAR(I, statusvalue, I32) /* $? */ |
| 339 | #ifdef VMS |
| 340 | PERLVAR(I, statusvalue_vms, U32) |
| 341 | #else |
| 342 | PERLVAR(I, statusvalue_posix, I32) |
| 343 | #endif |
| 344 | |
| 345 | PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */ |
| 346 | PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */ |
| 347 | |
| 348 | /* shortcuts to various I/O objects */ |
| 349 | PERLVAR(I, stdingv, GV *) /* *STDIN */ |
| 350 | PERLVAR(I, stderrgv, GV *) /* *STDERR */ |
| 351 | PERLVAR(I, argvgv, GV *) /* *ARGV */ |
| 352 | PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */ |
| 353 | PERLVAR(I, argvout_stack, AV *) |
| 354 | |
| 355 | /* shortcuts to regexp stuff */ |
| 356 | PERLVAR(I, replgv, GV *) /* *^R */ |
| 357 | |
| 358 | /* shortcuts to misc objects */ |
| 359 | PERLVAR(I, errgv, GV *) /* *@ */ |
| 360 | |
| 361 | /* shortcuts to debugging objects */ |
| 362 | PERLVAR(I, DBgv, GV *) /* *DB::DB */ |
| 363 | PERLVAR(I, DBline, GV *) /* *DB::line */ |
| 364 | |
| 365 | /* |
| 366 | =for apidoc mn|GV *|PL_DBsub |
| 367 | When Perl is run in debugging mode, with the B<-d> switch, this GV contains |
| 368 | the SV which holds the name of the sub being debugged. This is the C |
| 369 | variable which corresponds to Perl's $DB::sub variable. See |
| 370 | C<PL_DBsingle>. |
| 371 | |
| 372 | =for apidoc mn|SV *|PL_DBsingle |
| 373 | When Perl is run in debugging mode, with the B<-d> switch, this SV is a |
| 374 | boolean which indicates whether subs are being single-stepped. |
| 375 | Single-stepping is automatically turned on after every step. This is the C |
| 376 | variable which corresponds to Perl's $DB::single variable. See |
| 377 | C<PL_DBsub>. |
| 378 | |
| 379 | =for apidoc mn|SV *|PL_DBtrace |
| 380 | Trace variable used when Perl is run in debugging mode, with the B<-d> |
| 381 | switch. This is the C variable which corresponds to Perl's $DB::trace |
| 382 | variable. See C<PL_DBsingle>. |
| 383 | |
| 384 | =cut |
| 385 | */ |
| 386 | |
| 387 | PERLVAR(I, DBsub, GV *) /* *DB::sub */ |
| 388 | PERLVAR(I, DBsingle, SV *) /* $DB::single */ |
| 389 | PERLVAR(I, DBtrace, SV *) /* $DB::trace */ |
| 390 | PERLVAR(I, DBsignal, SV *) /* $DB::signal */ |
| 391 | PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */ |
| 392 | |
| 393 | /* symbol tables */ |
| 394 | PERLVAR(I, debstash, HV *) /* symbol table for perldb package */ |
| 395 | PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */ |
| 396 | PERLVAR(I, curstname, SV *) /* name of current package */ |
| 397 | PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */ |
| 398 | PERLVAR(I, endav, AV *) /* names of END subroutines */ |
| 399 | PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */ |
| 400 | PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */ |
| 401 | PERLVAR(I, initav, AV *) /* names of INIT subroutines */ |
| 402 | |
| 403 | /* subprocess state */ |
| 404 | PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */ |
| 405 | |
| 406 | /* internal state */ |
| 407 | PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */ |
| 408 | |
| 409 | /* current interpreter roots */ |
| 410 | PERLVAR(I, main_cv, CV *) |
| 411 | PERLVAR(I, main_root, OP *) |
| 412 | PERLVAR(I, main_start, OP *) |
| 413 | PERLVAR(I, eval_root, OP *) |
| 414 | PERLVAR(I, eval_start, OP *) |
| 415 | |
| 416 | /* runtime control stuff */ |
| 417 | PERLVARI(I, curcopdb, COP *, NULL) |
| 418 | |
| 419 | PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */ |
| 420 | PERLVAR(I, lastfd, int) /* what to preserve mode on */ |
| 421 | PERLVAR(I, oldname, char *) /* what to preserve mode on */ |
| 422 | PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */ |
| 423 | PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */ |
| 424 | /* Elements in this array have ';' appended and are injected as a single line |
| 425 | into the tokeniser. You can't put any (literal) newlines into any program |
| 426 | you stuff in into this array, as the point where it's injected is expecting |
| 427 | a single physical line. */ |
| 428 | PERLVAR(I, preambleav, AV *) |
| 429 | PERLVAR(I, mess_sv, SV *) |
| 430 | PERLVAR(I, ors_sv, SV *) /* output record separator $\ */ |
| 431 | |
| 432 | /* funky return mechanisms */ |
| 433 | PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */ |
| 434 | |
| 435 | /* statics moved here for shared library purposes */ |
| 436 | PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */ |
| 437 | PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */ |
| 438 | PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */ |
| 439 | PERLVARI(I, laststype, U16, OP_STAT) |
| 440 | |
| 441 | PERLVARI(I, laststatval, int, -1) |
| 442 | |
| 443 | PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in |
| 444 | assignment? */ |
| 445 | |
| 446 | /* interpreter atexit processing */ |
| 447 | PERLVARI(I, exitlistlen, I32, 0) /* length of same */ |
| 448 | PERLVARI(I, exitlist, PerlExitListEntry *, NULL) |
| 449 | /* list of exit functions */ |
| 450 | |
| 451 | /* |
| 452 | =for apidoc Amn|HV*|PL_modglobal |
| 453 | |
| 454 | C<PL_modglobal> is a general purpose, interpreter global HV for use by |
| 455 | extensions that need to keep information on a per-interpreter basis. |
| 456 | In a pinch, it can also be used as a symbol table for extensions |
| 457 | to share data among each other. It is a good idea to use keys |
| 458 | prefixed by the package name of the extension that owns the data. |
| 459 | |
| 460 | =cut |
| 461 | */ |
| 462 | |
| 463 | PERLVAR(I, modglobal, HV *) /* per-interp module data */ |
| 464 | |
| 465 | /* these used to be in global before 5.004_68 */ |
| 466 | PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */ |
| 467 | |
| 468 | PERLVAR(I, compiling, COP) /* compiling/done executing marker */ |
| 469 | |
| 470 | PERLVAR(I, compcv, CV *) /* currently compiling subroutine */ |
| 471 | PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */ |
| 472 | PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */ |
| 473 | PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */ |
| 474 | |
| 475 | #ifdef HAVE_INTERP_INTERN |
| 476 | PERLVAR(I, sys_intern, struct interp_intern) |
| 477 | /* platform internals */ |
| 478 | #endif |
| 479 | |
| 480 | /* more statics moved here */ |
| 481 | PERLVAR(I, DBcv, CV *) /* from perl.c */ |
| 482 | PERLVARI(I, generation, int, 100) /* from op.c */ |
| 483 | |
| 484 | PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */ |
| 485 | |
| 486 | PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */ |
| 487 | PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */ |
| 488 | PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */ |
| 489 | PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */ |
| 490 | |
| 491 | |
| 492 | PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */ |
| 493 | PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */ |
| 494 | PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */ |
| 495 | PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */ |
| 496 | PERLVARI(I, an, U32, 0) /* malloc sequence number */ |
| 497 | |
| 498 | /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */ |
| 499 | PERLVARI(I, breakable_sub_gen, U32, 0) |
| 500 | |
| 501 | #ifdef DEBUGGING |
| 502 | /* exercise wrap-around */ |
| 503 | #define PERL_COP_SEQMAX (U32_MAX-50) |
| 504 | #else |
| 505 | #define PERL_COP_SEQMAX 0 |
| 506 | #endif |
| 507 | PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */ |
| 508 | #undef PERL_COP_SEQMAX |
| 509 | |
| 510 | PERLVARI(I, evalseq, U32, 0) /* eval sequence number */ |
| 511 | PERLVAR(I, origalen, U32) |
| 512 | PERLVAR(I, origenviron, char **) |
| 513 | #ifdef PERL_USES_PL_PIDSTATUS |
| 514 | PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */ |
| 515 | #endif |
| 516 | PERLVAR(I, osname, char *) /* operating system */ |
| 517 | |
| 518 | PERLVAR(I, sighandlerp, Sighandler_t) |
| 519 | |
| 520 | PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */ |
| 521 | |
| 522 | PERLVAR(I, debug, VOL U32) /* flags given to -D switch */ |
| 523 | |
| 524 | PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */ |
| 525 | |
| 526 | PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT) |
| 527 | |
| 528 | PERLVAR(I, subname, SV *) /* name of current subroutine */ |
| 529 | |
| 530 | PERLVAR(I, subline, I32) /* line this subroutine began on */ |
| 531 | PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */ |
| 532 | |
| 533 | PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */ |
| 534 | PERLVAR(I, padix, I32) /* max used index in current "register" pad */ |
| 535 | |
| 536 | PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */ |
| 537 | |
| 538 | #ifdef USE_LOCALE_COLLATE |
| 539 | PERLVAR(I, collation_name, char *) /* Name of current collation */ |
| 540 | PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */ |
| 541 | PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */ |
| 542 | PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */ |
| 543 | PERLVARI(I, collation_standard, bool, TRUE) |
| 544 | /* Assume simple collation */ |
| 545 | #endif /* USE_LOCALE_COLLATE */ |
| 546 | |
| 547 | #ifdef PERL_SAWAMPERSAND |
| 548 | PERLVAR(I, sawampersand, U8) /* must save all match strings */ |
| 549 | #endif |
| 550 | |
| 551 | PERLVAR(I, unsafe, bool) |
| 552 | PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */ |
| 553 | |
| 554 | /* current phase the interpreter is in |
| 555 | for ordering this structure to remove holes, we're assuming that this is 4 |
| 556 | bytes. */ |
| 557 | PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT) |
| 558 | |
| 559 | PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */ |
| 560 | |
| 561 | /* This value may be set when embedding for full cleanup */ |
| 562 | /* 0=none, 1=full, 2=full with checks */ |
| 563 | /* mod_perl is special, and also assigns a meaning -1 */ |
| 564 | PERLVARI(I, perl_destruct_level, signed char, 0) |
| 565 | |
| 566 | #ifdef USE_LOCALE_NUMERIC |
| 567 | |
| 568 | PERLVARI(I, numeric_standard, int, TRUE) |
| 569 | /* Assume simple numerics */ |
| 570 | PERLVARI(I, numeric_local, bool, TRUE) |
| 571 | /* Assume local numerics */ |
| 572 | PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */ |
| 573 | PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */ |
| 574 | |
| 575 | #endif /* !USE_LOCALE_NUMERIC */ |
| 576 | |
| 577 | /* Unicode inversion lists */ |
| 578 | PERLVAR(I, Latin1, SV *) |
| 579 | PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */ |
| 580 | PERLVAR(I, AboveLatin1, SV *) |
| 581 | |
| 582 | PERLVAR(I, NonL1NonFinalFold, SV *) |
| 583 | PERLVAR(I, HasMultiCharFold, SV *) |
| 584 | |
| 585 | /* utf8 character class swashes */ |
| 586 | PERLVAR(I, utf8_mark, SV *) |
| 587 | PERLVAR(I, utf8_X_regular_begin, SV *) |
| 588 | PERLVAR(I, utf8_X_extend, SV *) |
| 589 | PERLVAR(I, utf8_toupper, SV *) |
| 590 | PERLVAR(I, utf8_totitle, SV *) |
| 591 | PERLVAR(I, utf8_tolower, SV *) |
| 592 | PERLVAR(I, utf8_tofold, SV *) |
| 593 | PERLVAR(I, utf8_charname_begin, SV *) |
| 594 | PERLVAR(I, utf8_charname_continue, SV *) |
| 595 | |
| 596 | PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *) |
| 597 | PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *) |
| 598 | PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *) |
| 599 | |
| 600 | PERLVAR(I, last_swash_hv, HV *) |
| 601 | PERLVAR(I, last_swash_tmps, U8 *) |
| 602 | PERLVAR(I, last_swash_slen, STRLEN) |
| 603 | PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8) |
| 604 | PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */ |
| 605 | |
| 606 | #ifdef FCRYPT |
| 607 | PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */ |
| 608 | #else |
| 609 | /* One byte hole in the interpreter structure. */ |
| 610 | #endif |
| 611 | |
| 612 | PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */ |
| 613 | PERLVAR(I, srand_called, bool) |
| 614 | |
| 615 | /* Array of signal handlers, indexed by signal number, through which the C |
| 616 | signal handler dispatches. */ |
| 617 | PERLVAR(I, psig_ptr, SV **) |
| 618 | /* Array of names of signals, indexed by signal number, for (re)use as the first |
| 619 | argument to a signal handler. Only one block of memory is allocated for |
| 620 | both psig_name and psig_ptr. */ |
| 621 | PERLVAR(I, psig_name, SV **) |
| 622 | |
| 623 | #if defined(PERL_IMPLICIT_SYS) |
| 624 | PERLVAR(I, Mem, struct IPerlMem *) |
| 625 | PERLVAR(I, MemShared, struct IPerlMem *) |
| 626 | PERLVAR(I, MemParse, struct IPerlMem *) |
| 627 | PERLVAR(I, Env, struct IPerlEnv *) |
| 628 | PERLVAR(I, StdIO, struct IPerlStdIO *) |
| 629 | PERLVAR(I, LIO, struct IPerlLIO *) |
| 630 | PERLVAR(I, Dir, struct IPerlDir *) |
| 631 | PERLVAR(I, Sock, struct IPerlSock *) |
| 632 | PERLVAR(I, Proc, struct IPerlProc *) |
| 633 | #endif |
| 634 | |
| 635 | PERLVAR(I, ptr_table, PTR_TBL_t *) |
| 636 | PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */ |
| 637 | |
| 638 | PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */ |
| 639 | |
| 640 | |
| 641 | #if defined(USE_ITHREADS) |
| 642 | PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of |
| 643 | regex_padav */ |
| 644 | PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the |
| 645 | values in op_pmoffset of pmop. |
| 646 | Entry 0 is an SV whose PV is a |
| 647 | "packed" list of IVs listing |
| 648 | the now-free slots in the array */ |
| 649 | PERLVAR(I, stashpad, HV **) /* for CopSTASH */ |
| 650 | PERLVARI(I, stashpadmax, PADOFFSET, 64) |
| 651 | PERLVARI(I, stashpadix, PADOFFSET, 0) |
| 652 | #endif |
| 653 | |
| 654 | #ifdef USE_REENTRANT_API |
| 655 | PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */ |
| 656 | #endif |
| 657 | |
| 658 | PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */ |
| 659 | PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */ |
| 660 | |
| 661 | #ifdef PERLIO_LAYERS |
| 662 | PERLVARI(I, perlio, PerlIOl *, NULL) |
| 663 | PERLVARI(I, known_layers, PerlIO_list_t *, NULL) |
| 664 | PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL) |
| 665 | #endif |
| 666 | |
| 667 | PERLVARI(I, encoding, SV *, NULL) /* character encoding */ |
| 668 | |
| 669 | PERLVAR(I, utf8_idstart, SV *) |
| 670 | PERLVAR(I, utf8_idcont, SV *) |
| 671 | PERLVAR(I, utf8_xidstart, SV *) |
| 672 | PERLVAR(I, utf8_perl_idstart, SV *) |
| 673 | PERLVAR(I, utf8_perl_idcont, SV *) |
| 674 | PERLVAR(I, utf8_xidcont, SV *) |
| 675 | |
| 676 | PERLVAR(I, sort_RealCmp, SVCOMPARE_t) |
| 677 | |
| 678 | PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */ |
| 679 | PERLVARI(I, unitcheckav_save, AV *, NULL) |
| 680 | /* save UNITCHECK{}s when compiling */ |
| 681 | |
| 682 | PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */ |
| 683 | |
| 684 | /* Hooks to shared SVs and locks. */ |
| 685 | PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing) |
| 686 | PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing) |
| 687 | #ifdef NO_MATHOMS |
| 688 | # define PERL_UNLOCK_HOOK Perl_sv_nosharing |
| 689 | #else |
| 690 | /* This reference ensures that the mathoms are linked with perl */ |
| 691 | # define PERL_UNLOCK_HOOK Perl_sv_nounlocking |
| 692 | #endif |
| 693 | PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK) |
| 694 | |
| 695 | PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook) |
| 696 | |
| 697 | /* Can shared object be destroyed */ |
| 698 | PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable) |
| 699 | |
| 700 | #ifndef PERL_MICRO |
| 701 | PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals) |
| 702 | #endif |
| 703 | |
| 704 | PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */ |
| 705 | |
| 706 | /* Register of known Method Resolution Orders. |
| 707 | What this actually points to is an implementation detail (it may change to |
| 708 | a structure incorporating a reference count - use mro_get_from_name to |
| 709 | retrieve a C<struct mro_alg *> */ |
| 710 | PERLVAR(I, registered_mros, HV *) |
| 711 | |
| 712 | /* Compile-time block start/end hooks */ |
| 713 | PERLVAR(I, blockhooks, AV *) |
| 714 | |
| 715 | /* Everything that folds to a given character, for case insensitivity regex |
| 716 | * matching */ |
| 717 | PERLVARI(I, utf8_foldclosures, HV *, NULL) |
| 718 | |
| 719 | /* List of characters that participate in folds (except marks, etc in |
| 720 | * multi-char folds) */ |
| 721 | PERLVARI(I, utf8_foldable, SV *, NULL) |
| 722 | |
| 723 | PERLVAR(I, custom_ops, HV *) /* custom op registrations */ |
| 724 | |
| 725 | PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */ |
| 726 | |
| 727 | /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be |
| 728 | present always, as -DDEBUGGING must be binary compatible with non. */ |
| 729 | PERLVARI(I, scopestack_name, const char * *, NULL) |
| 730 | |
| 731 | PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */ |
| 732 | |
| 733 | /* Hook for File::Glob */ |
| 734 | PERLVARI(I, globhook, globhook_t, NULL) |
| 735 | |
| 736 | /* The last unconditional member of the interpreter structure when 5.21.2 was |
| 737 | released. The offset of the end of this is baked into a global variable in |
| 738 | any shared perl library which will allow a sanity test in future perl |
| 739 | releases. */ |
| 740 | #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook |
| 741 | |
| 742 | #ifdef PERL_IMPLICIT_CONTEXT |
| 743 | PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */ |
| 744 | PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */ |
| 745 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
| 746 | PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */ |
| 747 | # endif |
| 748 | #endif |
| 749 | |
| 750 | #ifdef PERL_TRACK_MEMPOOL |
| 751 | /* For use with the memory debugging code in util.c */ |
| 752 | PERLVAR(I, memory_debug_header, struct perl_memory_debug_header) |
| 753 | #endif |
| 754 | |
| 755 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 756 | /* File descriptor to talk to the child which dumps scalars. */ |
| 757 | PERLVARI(I, dumper_fd, int, -1) |
| 758 | #endif |
| 759 | |
| 760 | |
| 761 | #ifdef DEBUG_LEAKING_SCALARS |
| 762 | PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */ |
| 763 | #endif |
| 764 | |
| 765 | PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */ |
| 766 | |
| 767 | #ifdef PERL_TRACE_OPS |
| 768 | PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type. |
| 769 | If PERL_TRACE_OPS is enabled, we'll dump |
| 770 | a summary count of all ops executed in the |
| 771 | program at perl_destruct time. For |
| 772 | profiling/debugging only. Works only if |
| 773 | DEBUGGING is enabled, too. */ |
| 774 | #endif |
| 775 | |
| 776 | PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE) |
| 777 | |
| 778 | /* If you are adding a U8 or U16, check to see if there are 'Space' comments |
| 779 | * above on where there are gaps which currently will be structure padding. */ |
| 780 | |
| 781 | /* Within a stable branch, new variables must be added to the very end, before |
| 782 | * this comment, for binary compatibility (the offsets of the old members must |
| 783 | * not change). |
| 784 | * (Don't forget to add your variable also to perl_clone()!) |
| 785 | * XSUB.h provides wrapper functions via perlapi.h that make this |
| 786 | * irrelevant, but not all code may be expected to #include XSUB.h. |
| 787 | */ |