3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 * 2006, 2007, 2008 by Larry Wall and others
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.
14 =head1 Per-Interpreter Variables
17 /* These variables are per-interpreter in threaded/multiplicity builds,
20 * Don't forget to re-run regen/embed.pl to propagate changes! */
22 /* New variables must be added to the very end for binary compatibility. */
24 /* Don't forget to add your variable also to perl_clone()! (in sv.c) */
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.
31 * When building without MULTIPLICITY, these variables will be truly global.
33 * Important ones in the first cache line (if alignment is done right) */
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) */
39 PERLVAR(I, stack_base, SV **)
40 PERLVAR(I, stack_max, SV **)
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)
47 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
48 PERLVAR(I, scopestack_ix, I32)
49 PERLVAR(I, scopestack_max, I32)
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)
56 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
58 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
60 PERLVAR(I, markstack_ptr, I32 *)
61 PERLVAR(I, markstack_max, I32 *)
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 */
67 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
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 *)
74 /* Fields used by magic variables such as $@, $/ and so on */
75 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
77 PERLVAR(I, tainting, bool) /* doing taint checks */
78 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
80 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
81 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
82 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
83 * flag; then various places such as av_store() skip mg_set(ary) if this
84 * flag is set, and various magic vtable methods set flags like
85 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
86 * control returns to pp_push or whatever, it sees if any of those flags
87 * have been set, and if so finally calls mg_set().
89 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
90 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
91 * in hot code like pp_push.
93 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
95 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
96 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
97 PERLVAR(I, defgv, GV *) /* the *_ glob */
100 =for apidoc mn|bool|PL_dowarn
102 The C variable which corresponds to Perl's C<$^W> warning variable.
107 PERLVAR(I, dowarn, U8)
109 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
114 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
119 PERLVAR(I, defstash, HV *) /* main symbol table */
120 PERLVAR(I, curstash, HV *) /* symbol table for current package */
122 PERLVAR(I, curcop, COP *)
123 PERLVAR(I, curstack, AV *) /* THE STACK */
124 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
125 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
128 /* memory management */
129 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
131 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
132 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
134 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
135 PERLVARI(I, reg_curpm, PMOP*, NULL)
137 /* the currently active slab in a chain of slabs of regmatch states,
138 * and the currently active state within that slab. This stack of states
139 * is shared amongst re-entrant calls to the regex engine */
141 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
142 PERLVAR(I, regmatch_state, regmatch_state *)
144 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
147 =for apidoc Amn|SV|PL_sv_undef
148 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
150 =for apidoc Amn|SV|PL_sv_no
151 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
154 =for apidoc Amn|SV|PL_sv_yes
155 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
161 PERLVAR(I, sv_undef, SV)
162 PERLVAR(I, sv_no, SV)
163 PERLVAR(I, sv_yes, SV)
164 PERLVAR(I, padname_undef, PADNAME)
165 PERLVAR(I, padname_const, PADNAME)
166 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
168 PERLVAR(I, parser, yy_parser *) /* current parser state */
170 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
174 =for apidoc Amn|STRLEN|PL_na
176 A convenience variable which is typically used with C<SvPV> when one
177 doesn't care about the length of the string. It is usually more efficient
178 to either declare a local variable and use that instead or to use the
184 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
188 PERLVAR(I, statbuf, Stat_t)
189 PERLVAR(I, statcache, Stat_t) /* _ */
190 PERLVAR(I, statgv, GV *)
191 PERLVARI(I, statname, SV *, NULL)
194 /* Will be removed soon after v5.23.4. See RT #121351 */
195 PERLVAR(I, timesbuf, struct tms)
199 =for apidoc mn|SV*|PL_rs
201 The input record separator - C<$/> in Perl space.
203 =for apidoc mn|GV*|PL_last_in_gv
205 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
207 =for apidoc mn|GV*|PL_ofsgv
209 The glob containing the output field separator - C<*,> in Perl space.
214 PERLVAR(I, rs, SV *) /* input record separator $/ */
215 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
216 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
217 PERLVAR(I, defoutgv, GV *) /* default FH for output */
218 PERLVARI(I, chopset, const char *, " \n-") /* $: */
219 PERLVAR(I, formtarget, SV *)
220 PERLVAR(I, bodytarget, SV *)
221 PERLVAR(I, toptarget, SV *)
224 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
225 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
227 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
228 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
229 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
231 /* statics "owned" by various functions */
232 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
234 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
237 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
238 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
239 PERLVAR(I, firstgv, GV *) /* $a */
240 PERLVAR(I, secondgv, GV *) /* $b */
243 PERLVAR(I, efloatbuf, char *)
244 PERLVAR(I, efloatsize, STRLEN)
246 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
249 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
251 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
252 PERLVAR(I, in_utf8_CTYPE_locale, bool)
253 #ifdef USE_LOCALE_CTYPE
254 PERLVAR(I, warn_locale, SV *)
257 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
260 =for apidoc Amn|peep_t|PL_peepp
262 Pointer to the per-subroutine 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
265 some ops and to perform small-scale optimisations. The function is
266 called once for each subroutine that is compiled, and is passed, as sole
267 parameter, a pointer to the op that is the entry point to the subroutine.
268 It modifies the op tree in place.
270 The peephole optimiser should never be completely replaced. Rather,
271 add code to it by wrapping the existing optimiser. The basic way to do
272 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
273 If the new code wishes to operate on ops throughout the subroutine's
274 structure, rather than just at the top level, it is likely to be more
275 convenient to wrap the L</PL_rpeepp> hook.
280 PERLVARI(I, peepp, peep_t, Perl_peep)
283 =for apidoc Amn|peep_t|PL_rpeepp
285 Pointer to the recursive peephole optimiser. This is a function
286 that gets called at the end of compilation of a Perl subroutine (or
287 equivalently independent piece of Perl code) to perform fixups of some
288 ops and to perform small-scale optimisations. The function is called
289 once for each chain of ops linked through their C<op_next> fields;
290 it is recursively called to handle each side chain. It is passed, as
291 sole parameter, a pointer to the op that is at the head of the chain.
292 It modifies the op tree in place.
294 The peephole optimiser should never be completely replaced. Rather,
295 add code to it by wrapping the existing optimiser. The basic way to do
296 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
297 If the new code wishes to operate only on ops at a subroutine's top level,
298 rather than throughout the structure, it is likely to be more convenient
299 to wrap the L</PL_peepp> hook.
304 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
307 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
309 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.
310 This allows extensions to free any extra attribute they have locally attached to an OP.
311 It is also assured to first fire for the parent OP and then for its kids.
313 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.
318 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
320 PERLVARI(I, watchaddr, char **, 0)
321 PERLVAR(I, watchok, char *)
323 PERLVAR(I, perldb, U32)
325 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
327 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
329 /* pseudo environmental stuff */
330 PERLVAR(I, origargc, int)
331 PERLVAR(I, origargv, char **)
332 PERLVAR(I, envgv, GV *)
333 PERLVAR(I, incgv, GV *)
334 PERLVAR(I, hintgv, GV *)
335 PERLVAR(I, origfilename, char *)
336 PERLVARI(I, xsubfilename, const char *, NULL)
337 PERLVAR(I, diehook, SV *)
338 PERLVAR(I, warnhook, SV *)
341 PERLVAR(I, patchlevel, SV *)
342 PERLVAR(I, localpatches, const char * const *)
343 PERLVARI(I, splitstr, const char *, " ")
345 PERLVAR(I, minus_c, bool)
346 PERLVAR(I, minus_n, bool)
347 PERLVAR(I, minus_p, bool)
348 PERLVAR(I, minus_l, bool)
349 PERLVAR(I, minus_a, bool)
350 PERLVAR(I, minus_F, bool)
351 PERLVAR(I, doswitches, bool)
352 PERLVAR(I, minus_E, bool)
354 PERLVAR(I, inplace, char *)
355 PERLVAR(I, e_script, SV *)
357 PERLVAR(I, basetime, Time_t) /* $^T */
359 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
360 /* top fd to pass to subprocesses */
361 PERLVAR(I, statusvalue, I32) /* $? */
363 PERLVAR(I, statusvalue_vms, U32)
365 PERLVAR(I, statusvalue_posix, I32)
368 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
369 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
371 /* shortcuts to various I/O objects */
372 PERLVAR(I, stdingv, GV *) /* *STDIN */
373 PERLVAR(I, stderrgv, GV *) /* *STDERR */
374 PERLVAR(I, argvgv, GV *) /* *ARGV */
375 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
376 PERLVAR(I, argvout_stack, AV *)
378 /* shortcuts to regexp stuff */
379 PERLVAR(I, replgv, GV *) /* *^R */
381 /* shortcuts to misc objects */
382 PERLVAR(I, errgv, GV *) /* *@ */
384 /* shortcuts to debugging objects */
385 PERLVAR(I, DBgv, GV *) /* *DB::DB */
386 PERLVAR(I, DBline, GV *) /* *DB::line */
389 =for apidoc mn|GV *|PL_DBsub
390 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
391 the SV which holds the name of the sub being debugged. This is the C
392 variable which corresponds to Perl's $DB::sub variable. See
395 =for apidoc mn|SV *|PL_DBsingle
396 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
397 boolean which indicates whether subs are being single-stepped.
398 Single-stepping is automatically turned on after every step. This is the C
399 variable which corresponds to Perl's $DB::single variable. See
402 =for apidoc mn|SV *|PL_DBtrace
403 Trace variable used when Perl is run in debugging mode, with the B<-d>
404 switch. This is the C variable which corresponds to Perl's $DB::trace
405 variable. See C<L</PL_DBsingle>>.
410 PERLVAR(I, DBsub, GV *) /* *DB::sub */
411 PERLVAR(I, DBsingle, SV *) /* $DB::single */
412 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
413 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
414 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
416 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
419 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
420 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
421 PERLVAR(I, curstname, SV *) /* name of current package */
422 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
423 PERLVAR(I, endav, AV *) /* names of END subroutines */
424 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
425 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
426 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
428 /* subprocess state */
429 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
432 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
434 /* current interpreter roots */
435 PERLVAR(I, main_cv, CV *)
436 PERLVAR(I, main_root, OP *)
437 PERLVAR(I, main_start, OP *)
438 PERLVAR(I, eval_root, OP *)
439 PERLVAR(I, eval_start, OP *)
441 /* runtime control stuff */
442 PERLVARI(I, curcopdb, COP *, NULL)
444 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
445 PERLVAR(I, lastfd, int) /* what to preserve mode on */
446 PERLVAR(I, oldname, char *) /* what to preserve mode on */
447 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
448 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
449 /* Elements in this array have ';' appended and are injected as a single line
450 into the tokeniser. You can't put any (literal) newlines into any program
451 you stuff in into this array, as the point where it's injected is expecting
452 a single physical line. */
453 PERLVAR(I, preambleav, AV *)
454 PERLVAR(I, mess_sv, SV *)
455 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
457 /* funky return mechanisms */
458 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
460 /* statics moved here for shared library purposes */
461 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
462 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
463 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
464 PERLVARI(I, laststype, U16, OP_STAT)
466 PERLVARI(I, laststatval, int, -1)
468 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
471 /* interpreter atexit processing */
472 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
473 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
474 /* list of exit functions */
477 =for apidoc Amn|HV*|PL_modglobal
479 C<PL_modglobal> is a general purpose, interpreter global HV for use by
480 extensions that need to keep information on a per-interpreter basis.
481 In a pinch, it can also be used as a symbol table for extensions
482 to share data among each other. It is a good idea to use keys
483 prefixed by the package name of the extension that owns the data.
488 PERLVAR(I, modglobal, HV *) /* per-interp module data */
490 /* these used to be in global before 5.004_68 */
491 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
493 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
495 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
496 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
497 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
498 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
500 #ifdef HAVE_INTERP_INTERN
501 PERLVAR(I, sys_intern, struct interp_intern)
502 /* platform internals */
505 /* more statics moved here */
506 PERLVAR(I, DBcv, CV *) /* from perl.c */
507 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
508 compile-time common elem detection */
510 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
512 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
513 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
514 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
515 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
518 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
519 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
520 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
521 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
522 PERLVARI(I, an, U32, 0) /* malloc sequence number */
524 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
525 PERLVARI(I, breakable_sub_gen, U32, 0)
528 /* exercise wrap-around */
529 #define PERL_COP_SEQMAX (U32_MAX-50)
531 #define PERL_COP_SEQMAX 0
533 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
534 #undef PERL_COP_SEQMAX
536 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
537 PERLVAR(I, origalen, U32)
538 PERLVAR(I, origenviron, char **)
539 #ifdef PERL_USES_PL_PIDSTATUS
540 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
542 PERLVAR(I, osname, char *) /* operating system */
544 PERLVAR(I, sighandlerp, Sighandler_t)
546 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
548 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
550 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
552 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
554 PERLVAR(I, subname, SV *) /* name of current subroutine */
556 PERLVAR(I, subline, I32) /* line this subroutine began on */
557 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
559 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
560 PERLVAR(I, padix, I32) /* lowest unused index - 1
561 in current "register" pad */
562 PERLVAR(I, constpadix, I32) /* lowest unused for constants */
564 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
566 #ifdef USE_LOCALE_COLLATE
567 PERLVAR(I, collation_name, char *) /* Name of current collation */
568 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
569 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
570 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
571 PERLVARI(I, collation_standard, bool, TRUE)
572 /* Assume simple collation */
573 #endif /* USE_LOCALE_COLLATE */
575 #ifdef PERL_SAWAMPERSAND
576 PERLVAR(I, sawampersand, U8) /* must save all match strings */
579 PERLVAR(I, unsafe, bool)
580 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
582 /* current phase the interpreter is in
583 for ordering this structure to remove holes, we're assuming that this is 4
585 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
587 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
589 /* This value may be set when embedding for full cleanup */
590 /* 0=none, 1=full, 2=full with checks */
591 /* mod_perl is special, and also assigns a meaning -1 */
592 PERLVARI(I, perl_destruct_level, signed char, 0)
594 #ifdef USE_LOCALE_NUMERIC
596 PERLVARI(I, numeric_standard, int, TRUE)
597 /* Assume simple numerics */
598 PERLVARI(I, numeric_local, bool, TRUE)
599 /* Assume local numerics */
600 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
601 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
603 #endif /* !USE_LOCALE_NUMERIC */
605 /* Unicode inversion lists */
606 PERLVAR(I, Latin1, SV *)
607 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
608 PERLVAR(I, AboveLatin1, SV *)
609 PERLVAR(I, InBitmap, SV *)
611 PERLVAR(I, NonL1NonFinalFold, SV *)
612 PERLVAR(I, HasMultiCharFold, SV *)
614 /* utf8 character class swashes */
615 PERLVAR(I, utf8_mark, SV *)
616 PERLVAR(I, utf8_toupper, SV *)
617 PERLVAR(I, utf8_totitle, SV *)
618 PERLVAR(I, utf8_tolower, SV *)
619 PERLVAR(I, utf8_tofold, SV *)
620 PERLVAR(I, utf8_charname_begin, SV *)
621 PERLVAR(I, utf8_charname_continue, SV *)
623 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
624 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
625 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
626 PERLVAR(I, GCB_invlist, SV *)
627 PERLVAR(I, SB_invlist, SV *)
628 PERLVAR(I, WB_invlist, SV *)
630 PERLVAR(I, last_swash_hv, HV *)
631 PERLVAR(I, last_swash_tmps, U8 *)
632 PERLVAR(I, last_swash_slen, STRLEN)
633 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
634 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
637 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
639 /* One byte hole in the interpreter structure. */
642 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
643 PERLVAR(I, srand_called, bool)
645 /* Array of signal handlers, indexed by signal number, through which the C
646 signal handler dispatches. */
647 PERLVAR(I, psig_ptr, SV **)
648 /* Array of names of signals, indexed by signal number, for (re)use as the first
649 argument to a signal handler. Only one block of memory is allocated for
650 both psig_name and psig_ptr. */
651 PERLVAR(I, psig_name, SV **)
653 #if defined(PERL_IMPLICIT_SYS)
654 PERLVAR(I, Mem, struct IPerlMem *)
655 PERLVAR(I, MemShared, struct IPerlMem *)
656 PERLVAR(I, MemParse, struct IPerlMem *)
657 PERLVAR(I, Env, struct IPerlEnv *)
658 PERLVAR(I, StdIO, struct IPerlStdIO *)
659 PERLVAR(I, LIO, struct IPerlLIO *)
660 PERLVAR(I, Dir, struct IPerlDir *)
661 PERLVAR(I, Sock, struct IPerlSock *)
662 PERLVAR(I, Proc, struct IPerlProc *)
665 PERLVAR(I, ptr_table, PTR_TBL_t *)
666 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
668 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
671 #if defined(USE_ITHREADS)
672 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
674 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
675 values in op_pmoffset of pmop.
676 Entry 0 is an SV whose PV is a
677 "packed" list of IVs listing
678 the now-free slots in the array */
679 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
680 PERLVARI(I, stashpadmax, PADOFFSET, 64)
681 PERLVARI(I, stashpadix, PADOFFSET, 0)
684 #ifdef USE_REENTRANT_API
685 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
688 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
689 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
692 PERLVARI(I, perlio, PerlIOl *, NULL)
693 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
694 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
697 PERLVARI(I, encoding, SV *, NULL) /* $^ENCODING */
698 PERLVARI(I, lex_encoding, SV *, NULL) /* encoding pragma */
700 PERLVAR(I, utf8_idstart, SV *)
701 PERLVAR(I, utf8_idcont, SV *)
702 PERLVAR(I, utf8_xidstart, SV *)
703 PERLVAR(I, utf8_perl_idstart, SV *)
704 PERLVAR(I, utf8_perl_idcont, SV *)
705 PERLVAR(I, utf8_xidcont, SV *)
707 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
709 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
710 PERLVARI(I, unitcheckav_save, AV *, NULL)
711 /* save UNITCHECK{}s when compiling */
713 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
715 /* Hooks to shared SVs and locks. */
716 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
717 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
719 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
721 /* This reference ensures that the mathoms are linked with perl */
722 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
724 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
726 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
728 /* Can shared object be destroyed */
729 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
732 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
735 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
737 /* Register of known Method Resolution Orders.
738 What this actually points to is an implementation detail (it may change to
739 a structure incorporating a reference count - use mro_get_from_name to
740 retrieve a C<struct mro_alg *> */
741 PERLVAR(I, registered_mros, HV *)
743 /* Compile-time block start/end hooks */
744 PERLVAR(I, blockhooks, AV *)
746 /* Everything that folds to a given character, for case insensitivity regex
748 PERLVARI(I, utf8_foldclosures, HV *, NULL)
750 /* List of characters that participate in folds (except marks, etc in
751 * multi-char folds) */
752 PERLVARI(I, utf8_foldable, SV *, NULL)
754 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
756 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
758 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
759 present always, as -DDEBUGGING must be binary compatible with non. */
760 PERLVARI(I, scopestack_name, const char * *, NULL)
762 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
764 /* Hook for File::Glob */
765 PERLVARI(I, globhook, globhook_t, NULL)
767 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
769 /* The last unconditional member of the interpreter structure when 5.23.4 was
770 released. The offset of the end of this is baked into a global variable in
771 any shared perl library which will allow a sanity test in future perl
773 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
775 #ifdef PERL_IMPLICIT_CONTEXT
776 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
777 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
778 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
779 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
783 #ifdef PERL_TRACK_MEMPOOL
784 /* For use with the memory debugging code in util.c */
785 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
788 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
789 /* File descriptor to talk to the child which dumps scalars. */
790 PERLVARI(I, dumper_fd, int, -1)
794 #ifdef DEBUG_LEAKING_SCALARS
795 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
798 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
800 #ifdef PERL_TRACE_OPS
801 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
802 If PERL_TRACE_OPS is enabled, we'll dump
803 a summary count of all ops executed in the
804 program at perl_destruct time. For
805 profiling/debugging only. Works only if
806 DEBUGGING is enabled, too. */
809 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
811 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
812 * above on where there are gaps which currently will be structure padding. */
814 /* Within a stable branch, new variables must be added to the very end, before
815 * this comment, for binary compatibility (the offsets of the old members must
817 * (Don't forget to add your variable also to perl_clone()!)
818 * XSUB.h provides wrapper functions via perlapi.h that make this
819 * irrelevant, but not all code may be expected to #include XSUB.h.