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 PERLVARI(I, sawalias, bool, FALSE) /* must enable common-vars
66 #ifdef PERL_HASH_RANDOMIZE_KEYS
67 #ifdef USE_PERL_PERTURB_KEYS
68 PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
70 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
72 PERLVAR(I, strtab, HV *) /* shared string table */
73 /* prog counter for the currently executing OP_MULTIDEREF Used to signal
74 * to S_find_uninit_var() where we are */
75 PERLVAR(I, multideref_pc, UNOP_AUX_item *)
77 /* Fields used by magic variables such as $@, $/ and so on */
78 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
80 PERLVAR(I, tainting, bool) /* doing taint checks */
81 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
82 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
83 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
84 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
85 PERLVAR(I, defgv, GV *) /* the *_ glob */
88 =for apidoc mn|bool|PL_dowarn
90 The C variable which corresponds to Perl's $^W warning variable.
95 PERLVAR(I, dowarn, U8)
97 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
102 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
107 PERLVAR(I, defstash, HV *) /* main symbol table */
108 PERLVAR(I, curstash, HV *) /* symbol table for current package */
110 PERLVAR(I, curcop, COP *)
111 PERLVAR(I, curstack, AV *) /* THE STACK */
112 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
113 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
116 /* memory management */
117 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
119 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
120 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
122 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
123 PERLVARI(I, reg_curpm, PMOP*, NULL)
125 /* the currently active slab in a chain of slabs of regmatch states,
126 * and the currently active state within that slab. This stack of states
127 * is shared amongst re-entrant calls to the regex engine */
129 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
130 PERLVAR(I, regmatch_state, regmatch_state *)
132 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
135 =for apidoc Amn|SV|PL_sv_undef
136 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
138 =for apidoc Amn|SV|PL_sv_no
139 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
142 =for apidoc Amn|SV|PL_sv_yes
143 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
149 PERLVAR(I, sv_undef, SV)
150 PERLVAR(I, sv_no, SV)
151 PERLVAR(I, sv_yes, SV)
152 PERLVAR(I, padname_undef, PADNAME)
153 PERLVAR(I, padname_const, PADNAME)
154 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
156 PERLVAR(I, parser, yy_parser *) /* current parser state */
158 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
162 =for apidoc Amn|STRLEN|PL_na
164 A convenience variable which is typically used with C<SvPV> when one
165 doesn't care about the length of the string. It is usually more efficient
166 to either declare a local variable and use that instead or to use the
172 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
176 PERLVAR(I, statbuf, Stat_t)
177 PERLVAR(I, statcache, Stat_t) /* _ */
178 PERLVAR(I, statgv, GV *)
179 PERLVARI(I, statname, SV *, NULL)
182 /* Will be removed soon after v5.23.2. See RT #121351 */
183 PERLVAR(I, timesbuf, struct tms)
187 =for apidoc mn|SV*|PL_rs
189 The input record separator - C<$/> in Perl space.
191 =for apidoc mn|GV*|PL_last_in_gv
193 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
195 =for apidoc mn|GV*|PL_ofsgv
197 The glob containing the output field separator - C<*,> in Perl space.
202 PERLVAR(I, rs, SV *) /* input record separator $/ */
203 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
204 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
205 PERLVAR(I, defoutgv, GV *) /* default FH for output */
206 PERLVARI(I, chopset, const char *, " \n-") /* $: */
207 PERLVAR(I, formtarget, SV *)
208 PERLVAR(I, bodytarget, SV *)
209 PERLVAR(I, toptarget, SV *)
212 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
213 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
215 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
216 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
217 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
219 /* statics "owned" by various functions */
220 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
222 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
225 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
226 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
227 PERLVAR(I, firstgv, GV *) /* $a */
228 PERLVAR(I, secondgv, GV *) /* $b */
231 PERLVAR(I, efloatbuf, char *)
232 PERLVAR(I, efloatsize, STRLEN)
234 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
237 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
239 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
240 PERLVAR(I, in_utf8_CTYPE_locale, bool)
241 #ifdef USE_LOCALE_CTYPE
242 PERLVAR(I, warn_locale, SV *)
245 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
248 =for apidoc Amn|peep_t|PL_peepp
250 Pointer to the per-subroutine peephole optimiser. This is a function
251 that gets called at the end of compilation of a Perl subroutine (or
252 equivalently independent piece of Perl code) to perform fixups of
253 some ops and to perform small-scale optimisations. The function is
254 called once for each subroutine that is compiled, and is passed, as sole
255 parameter, a pointer to the op that is the entry point to the subroutine.
256 It modifies the op tree in place.
258 The peephole optimiser should never be completely replaced. Rather,
259 add code to it by wrapping the existing optimiser. The basic way to do
260 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
261 If the new code wishes to operate on ops throughout the subroutine's
262 structure, rather than just at the top level, it is likely to be more
263 convenient to wrap the L</PL_rpeepp> hook.
268 PERLVARI(I, peepp, peep_t, Perl_peep)
271 =for apidoc Amn|peep_t|PL_rpeepp
273 Pointer to the recursive peephole optimiser. This is a function
274 that gets called at the end of compilation of a Perl subroutine (or
275 equivalently independent piece of Perl code) to perform fixups of some
276 ops and to perform small-scale optimisations. The function is called
277 once for each chain of ops linked through their C<op_next> fields;
278 it is recursively called to handle each side chain. It is passed, as
279 sole parameter, a pointer to the op that is at the head of the chain.
280 It modifies the op tree in place.
282 The peephole optimiser should never be completely replaced. Rather,
283 add code to it by wrapping the existing optimiser. The basic way to do
284 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
285 If the new code wishes to operate only on ops at a subroutine's top level,
286 rather than throughout the structure, it is likely to be more convenient
287 to wrap the L</PL_peepp> hook.
292 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
295 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
297 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.
298 This allows extensions to free any extra attribute they have locally attached to an OP.
299 It is also assured to first fire for the parent OP and then for its kids.
301 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.
306 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
308 PERLVARI(I, watchaddr, char **, 0)
309 PERLVAR(I, watchok, char *)
311 PERLVAR(I, perldb, U32)
313 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
315 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
317 /* pseudo environmental stuff */
318 PERLVAR(I, origargc, int)
319 PERLVAR(I, origargv, char **)
320 PERLVAR(I, envgv, GV *)
321 PERLVAR(I, incgv, GV *)
322 PERLVAR(I, hintgv, GV *)
323 PERLVAR(I, origfilename, char *)
324 PERLVARI(I, xsubfilename, const char *, NULL)
325 PERLVAR(I, diehook, SV *)
326 PERLVAR(I, warnhook, SV *)
329 PERLVAR(I, patchlevel, SV *)
330 PERLVAR(I, localpatches, const char * const *)
331 PERLVARI(I, splitstr, const char *, " ")
333 PERLVAR(I, minus_c, bool)
334 PERLVAR(I, minus_n, bool)
335 PERLVAR(I, minus_p, bool)
336 PERLVAR(I, minus_l, bool)
337 PERLVAR(I, minus_a, bool)
338 PERLVAR(I, minus_F, bool)
339 PERLVAR(I, doswitches, bool)
340 PERLVAR(I, minus_E, bool)
342 PERLVAR(I, inplace, char *)
343 PERLVAR(I, e_script, SV *)
345 PERLVAR(I, basetime, Time_t) /* $^T */
347 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
348 /* top fd to pass to subprocesses */
349 PERLVAR(I, statusvalue, I32) /* $? */
351 PERLVAR(I, statusvalue_vms, U32)
353 PERLVAR(I, statusvalue_posix, I32)
356 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
357 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
359 /* shortcuts to various I/O objects */
360 PERLVAR(I, stdingv, GV *) /* *STDIN */
361 PERLVAR(I, stderrgv, GV *) /* *STDERR */
362 PERLVAR(I, argvgv, GV *) /* *ARGV */
363 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
364 PERLVAR(I, argvout_stack, AV *)
366 /* shortcuts to regexp stuff */
367 PERLVAR(I, replgv, GV *) /* *^R */
369 /* shortcuts to misc objects */
370 PERLVAR(I, errgv, GV *) /* *@ */
372 /* shortcuts to debugging objects */
373 PERLVAR(I, DBgv, GV *) /* *DB::DB */
374 PERLVAR(I, DBline, GV *) /* *DB::line */
377 =for apidoc mn|GV *|PL_DBsub
378 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
379 the SV which holds the name of the sub being debugged. This is the C
380 variable which corresponds to Perl's $DB::sub variable. See
383 =for apidoc mn|SV *|PL_DBsingle
384 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
385 boolean which indicates whether subs are being single-stepped.
386 Single-stepping is automatically turned on after every step. This is the C
387 variable which corresponds to Perl's $DB::single variable. See
390 =for apidoc mn|SV *|PL_DBtrace
391 Trace variable used when Perl is run in debugging mode, with the B<-d>
392 switch. This is the C variable which corresponds to Perl's $DB::trace
393 variable. See C<PL_DBsingle>.
398 PERLVAR(I, DBsub, GV *) /* *DB::sub */
399 PERLVAR(I, DBsingle, SV *) /* $DB::single */
400 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
401 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
402 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
404 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
407 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
408 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
409 PERLVAR(I, curstname, SV *) /* name of current package */
410 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
411 PERLVAR(I, endav, AV *) /* names of END subroutines */
412 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
413 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
414 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
416 /* subprocess state */
417 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
420 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
422 /* current interpreter roots */
423 PERLVAR(I, main_cv, CV *)
424 PERLVAR(I, main_root, OP *)
425 PERLVAR(I, main_start, OP *)
426 PERLVAR(I, eval_root, OP *)
427 PERLVAR(I, eval_start, OP *)
429 /* runtime control stuff */
430 PERLVARI(I, curcopdb, COP *, NULL)
432 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
433 PERLVAR(I, lastfd, int) /* what to preserve mode on */
434 PERLVAR(I, oldname, char *) /* what to preserve mode on */
435 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
436 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
437 /* Elements in this array have ';' appended and are injected as a single line
438 into the tokeniser. You can't put any (literal) newlines into any program
439 you stuff in into this array, as the point where it's injected is expecting
440 a single physical line. */
441 PERLVAR(I, preambleav, AV *)
442 PERLVAR(I, mess_sv, SV *)
443 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
445 /* funky return mechanisms */
446 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
448 /* statics moved here for shared library purposes */
449 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
450 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
451 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
452 PERLVARI(I, laststype, U16, OP_STAT)
454 PERLVARI(I, laststatval, int, -1)
456 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
459 /* interpreter atexit processing */
460 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
461 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
462 /* list of exit functions */
465 =for apidoc Amn|HV*|PL_modglobal
467 C<PL_modglobal> is a general purpose, interpreter global HV for use by
468 extensions that need to keep information on a per-interpreter basis.
469 In a pinch, it can also be used as a symbol table for extensions
470 to share data among each other. It is a good idea to use keys
471 prefixed by the package name of the extension that owns the data.
476 PERLVAR(I, modglobal, HV *) /* per-interp module data */
478 /* these used to be in global before 5.004_68 */
479 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
481 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
483 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
484 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
485 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
486 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
488 #ifdef HAVE_INTERP_INTERN
489 PERLVAR(I, sys_intern, struct interp_intern)
490 /* platform internals */
493 /* more statics moved here */
494 PERLVAR(I, DBcv, CV *) /* from perl.c */
495 PERLVARI(I, generation, int, 100) /* from op.c */
497 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
499 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
500 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
501 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
502 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
505 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
506 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
507 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
508 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
509 PERLVARI(I, an, U32, 0) /* malloc sequence number */
511 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
512 PERLVARI(I, breakable_sub_gen, U32, 0)
515 /* exercise wrap-around */
516 #define PERL_COP_SEQMAX (U32_MAX-50)
518 #define PERL_COP_SEQMAX 0
520 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
521 #undef PERL_COP_SEQMAX
523 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
524 PERLVAR(I, origalen, U32)
525 PERLVAR(I, origenviron, char **)
526 #ifdef PERL_USES_PL_PIDSTATUS
527 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
529 PERLVAR(I, osname, char *) /* operating system */
531 PERLVAR(I, sighandlerp, Sighandler_t)
533 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
535 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
537 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
539 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
541 PERLVAR(I, subname, SV *) /* name of current subroutine */
543 PERLVAR(I, subline, I32) /* line this subroutine began on */
544 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
546 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
547 PERLVAR(I, padix, I32) /* lowest unused index - 1
548 in current "register" pad */
549 PERLVAR(I, constpadix, I32) /* lowest unused for constants */
551 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
553 #ifdef USE_LOCALE_COLLATE
554 PERLVAR(I, collation_name, char *) /* Name of current collation */
555 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
556 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
557 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
558 PERLVARI(I, collation_standard, bool, TRUE)
559 /* Assume simple collation */
560 #endif /* USE_LOCALE_COLLATE */
562 #ifdef PERL_SAWAMPERSAND
563 PERLVAR(I, sawampersand, U8) /* must save all match strings */
566 PERLVAR(I, unsafe, bool)
567 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
569 /* current phase the interpreter is in
570 for ordering this structure to remove holes, we're assuming that this is 4
572 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
574 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
576 /* This value may be set when embedding for full cleanup */
577 /* 0=none, 1=full, 2=full with checks */
578 /* mod_perl is special, and also assigns a meaning -1 */
579 PERLVARI(I, perl_destruct_level, signed char, 0)
581 #ifdef USE_LOCALE_NUMERIC
583 PERLVARI(I, numeric_standard, int, TRUE)
584 /* Assume simple numerics */
585 PERLVARI(I, numeric_local, bool, TRUE)
586 /* Assume local numerics */
587 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
588 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
590 #endif /* !USE_LOCALE_NUMERIC */
592 /* Unicode inversion lists */
593 PERLVAR(I, Latin1, SV *)
594 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
595 PERLVAR(I, AboveLatin1, SV *)
596 PERLVAR(I, InBitmap, SV *)
598 PERLVAR(I, NonL1NonFinalFold, SV *)
599 PERLVAR(I, HasMultiCharFold, SV *)
601 /* utf8 character class swashes */
602 PERLVAR(I, utf8_mark, SV *)
603 PERLVAR(I, utf8_toupper, SV *)
604 PERLVAR(I, utf8_totitle, SV *)
605 PERLVAR(I, utf8_tolower, SV *)
606 PERLVAR(I, utf8_tofold, SV *)
607 PERLVAR(I, utf8_charname_begin, SV *)
608 PERLVAR(I, utf8_charname_continue, SV *)
610 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
611 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
612 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
613 PERLVAR(I, GCB_invlist, SV *)
614 PERLVAR(I, SB_invlist, SV *)
615 PERLVAR(I, WB_invlist, SV *)
617 PERLVAR(I, last_swash_hv, HV *)
618 PERLVAR(I, last_swash_tmps, U8 *)
619 PERLVAR(I, last_swash_slen, STRLEN)
620 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
621 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
624 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
626 /* One byte hole in the interpreter structure. */
629 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
630 PERLVAR(I, srand_called, bool)
632 /* Array of signal handlers, indexed by signal number, through which the C
633 signal handler dispatches. */
634 PERLVAR(I, psig_ptr, SV **)
635 /* Array of names of signals, indexed by signal number, for (re)use as the first
636 argument to a signal handler. Only one block of memory is allocated for
637 both psig_name and psig_ptr. */
638 PERLVAR(I, psig_name, SV **)
640 #if defined(PERL_IMPLICIT_SYS)
641 PERLVAR(I, Mem, struct IPerlMem *)
642 PERLVAR(I, MemShared, struct IPerlMem *)
643 PERLVAR(I, MemParse, struct IPerlMem *)
644 PERLVAR(I, Env, struct IPerlEnv *)
645 PERLVAR(I, StdIO, struct IPerlStdIO *)
646 PERLVAR(I, LIO, struct IPerlLIO *)
647 PERLVAR(I, Dir, struct IPerlDir *)
648 PERLVAR(I, Sock, struct IPerlSock *)
649 PERLVAR(I, Proc, struct IPerlProc *)
652 PERLVAR(I, ptr_table, PTR_TBL_t *)
653 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
655 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
658 #if defined(USE_ITHREADS)
659 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
661 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
662 values in op_pmoffset of pmop.
663 Entry 0 is an SV whose PV is a
664 "packed" list of IVs listing
665 the now-free slots in the array */
666 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
667 PERLVARI(I, stashpadmax, PADOFFSET, 64)
668 PERLVARI(I, stashpadix, PADOFFSET, 0)
671 #ifdef USE_REENTRANT_API
672 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
675 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
676 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
679 PERLVARI(I, perlio, PerlIOl *, NULL)
680 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
681 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
684 PERLVARI(I, encoding, SV *, NULL) /* $^ENCODING */
685 PERLVARI(I, lex_encoding, SV *, NULL) /* encoding pragma */
687 PERLVAR(I, utf8_idstart, SV *)
688 PERLVAR(I, utf8_idcont, SV *)
689 PERLVAR(I, utf8_xidstart, SV *)
690 PERLVAR(I, utf8_perl_idstart, SV *)
691 PERLVAR(I, utf8_perl_idcont, SV *)
692 PERLVAR(I, utf8_xidcont, SV *)
694 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
696 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
697 PERLVARI(I, unitcheckav_save, AV *, NULL)
698 /* save UNITCHECK{}s when compiling */
700 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
702 /* Hooks to shared SVs and locks. */
703 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
704 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
706 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
708 /* This reference ensures that the mathoms are linked with perl */
709 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
711 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
713 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
715 /* Can shared object be destroyed */
716 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
719 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
722 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
724 /* Register of known Method Resolution Orders.
725 What this actually points to is an implementation detail (it may change to
726 a structure incorporating a reference count - use mro_get_from_name to
727 retrieve a C<struct mro_alg *> */
728 PERLVAR(I, registered_mros, HV *)
730 /* Compile-time block start/end hooks */
731 PERLVAR(I, blockhooks, AV *)
733 /* Everything that folds to a given character, for case insensitivity regex
735 PERLVARI(I, utf8_foldclosures, HV *, NULL)
737 /* List of characters that participate in folds (except marks, etc in
738 * multi-char folds) */
739 PERLVARI(I, utf8_foldable, SV *, NULL)
741 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
743 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
745 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
746 present always, as -DDEBUGGING must be binary compatible with non. */
747 PERLVARI(I, scopestack_name, const char * *, NULL)
749 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
751 /* Hook for File::Glob */
752 PERLVARI(I, globhook, globhook_t, NULL)
754 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
756 /* The last unconditional member of the interpreter structure when 5.23.2 was
757 released. The offset of the end of this is baked into a global variable in
758 any shared perl library which will allow a sanity test in future perl
760 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
762 #ifdef PERL_IMPLICIT_CONTEXT
763 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
764 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
765 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
766 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
770 #ifdef PERL_TRACK_MEMPOOL
771 /* For use with the memory debugging code in util.c */
772 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
775 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
776 /* File descriptor to talk to the child which dumps scalars. */
777 PERLVARI(I, dumper_fd, int, -1)
781 #ifdef DEBUG_LEAKING_SCALARS
782 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
785 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
787 #ifdef PERL_TRACE_OPS
788 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
789 If PERL_TRACE_OPS is enabled, we'll dump
790 a summary count of all ops executed in the
791 program at perl_destruct time. For
792 profiling/debugging only. Works only if
793 DEBUGGING is enabled, too. */
796 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
798 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
799 * above on where there are gaps which currently will be structure padding. */
801 /* Within a stable branch, new variables must be added to the very end, before
802 * this comment, for binary compatibility (the offsets of the old members must
804 * (Don't forget to add your variable also to perl_clone()!)
805 * XSUB.h provides wrapper functions via perlapi.h that make this
806 * irrelevant, but not all code may be expected to #include XSUB.h.