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 */
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 $< */
79 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
80 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
81 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
82 PERLVAR(I, defgv, GV *) /* the *_ glob */
85 =for apidoc mn|bool|PL_dowarn
87 The C variable which corresponds to Perl's $^W warning variable.
92 PERLVAR(I, dowarn, U8)
94 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
99 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
104 PERLVAR(I, defstash, HV *) /* main symbol table */
105 PERLVAR(I, curstash, HV *) /* symbol table for current package */
107 PERLVAR(I, curcop, COP *)
108 PERLVAR(I, curstack, AV *) /* THE STACK */
109 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
110 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
113 /* memory management */
114 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
116 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
117 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
119 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
120 PERLVARI(I, reg_curpm, PMOP*, NULL)
122 /* the currently active slab in a chain of slabs of regmatch states,
123 * and the currently active state within that slab. This stack of states
124 * is shared amongst re-entrant calls to the regex engine */
126 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
127 PERLVAR(I, regmatch_state, regmatch_state *)
129 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
132 =for apidoc Amn|SV|PL_sv_undef
133 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
135 =for apidoc Amn|SV|PL_sv_no
136 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
139 =for apidoc Amn|SV|PL_sv_yes
140 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
146 PERLVAR(I, sv_undef, SV)
147 PERLVAR(I, sv_no, SV)
148 PERLVAR(I, sv_yes, SV)
149 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
151 PERLVAR(I, parser, yy_parser *) /* current parser state */
153 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
157 =for apidoc Amn|STRLEN|PL_na
159 A convenience variable which is typically used with C<SvPV> when one
160 doesn't care about the length of the string. It is usually more efficient
161 to either declare a local variable and use that instead or to use the
167 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
171 PERLVAR(I, statbuf, Stat_t)
172 PERLVAR(I, statcache, Stat_t) /* _ */
173 PERLVAR(I, statgv, GV *)
174 PERLVARI(I, statname, SV *, NULL)
177 /* Will be removed soon after v5.21.6. See RT #121351 */
178 PERLVAR(I, timesbuf, struct tms)
182 =for apidoc mn|SV*|PL_rs
184 The input record separator - C<$/> in Perl space.
186 =for apidoc mn|GV*|PL_last_in_gv
188 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
190 =for apidoc mn|GV*|PL_ofsgv
192 The glob containing the output field separator - C<*,> in Perl space.
197 PERLVAR(I, rs, SV *) /* input record separator $/ */
198 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
199 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
200 PERLVAR(I, defoutgv, GV *) /* default FH for output */
201 PERLVARI(I, chopset, const char *, " \n-") /* $: */
202 PERLVAR(I, formtarget, SV *)
203 PERLVAR(I, bodytarget, SV *)
204 PERLVAR(I, toptarget, SV *)
207 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
208 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
210 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
211 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
212 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
214 /* statics "owned" by various functions */
215 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
217 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
220 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
221 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
222 PERLVAR(I, firstgv, GV *) /* $a */
223 PERLVAR(I, secondgv, GV *) /* $b */
226 PERLVAR(I, efloatbuf, char *)
227 PERLVAR(I, efloatsize, STRLEN)
229 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
232 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
234 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
235 PERLVAR(I, in_utf8_CTYPE_locale, bool)
237 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
240 =for apidoc Amn|peep_t|PL_peepp
242 Pointer to the per-subroutine peephole optimiser. This is a function
243 that gets called at the end of compilation of a Perl subroutine (or
244 equivalently independent piece of Perl code) to perform fixups of
245 some ops and to perform small-scale optimisations. The function is
246 called once for each subroutine that is compiled, and is passed, as sole
247 parameter, a pointer to the op that is the entry point to the subroutine.
248 It modifies the op tree in place.
250 The peephole optimiser should never be completely replaced. Rather,
251 add code to it by wrapping the existing optimiser. The basic way to do
252 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
253 If the new code wishes to operate on ops throughout the subroutine's
254 structure, rather than just at the top level, it is likely to be more
255 convenient to wrap the L</PL_rpeepp> hook.
260 PERLVARI(I, peepp, peep_t, Perl_peep)
263 =for apidoc Amn|peep_t|PL_rpeepp
265 Pointer to the recursive peephole optimiser. This is a function
266 that gets called at the end of compilation of a Perl subroutine (or
267 equivalently independent piece of Perl code) to perform fixups of some
268 ops and to perform small-scale optimisations. The function is called
269 once for each chain of ops linked through their C<op_next> fields;
270 it is recursively called to handle each side chain. It is passed, as
271 sole parameter, a pointer to the op that is at the head of the chain.
272 It modifies the op tree in place.
274 The peephole optimiser should never be completely replaced. Rather,
275 add code to it by wrapping the existing optimiser. The basic way to do
276 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
277 If the new code wishes to operate only on ops at a subroutine's top level,
278 rather than throughout the structure, it is likely to be more convenient
279 to wrap the L</PL_peepp> hook.
284 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
287 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
289 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.
290 This allows extensions to free any extra attribute they have locally attached to an OP.
291 It is also assured to first fire for the parent OP and then for its kids.
293 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.
298 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
300 PERLVARI(I, watchaddr, char **, 0)
301 PERLVAR(I, watchok, char *)
303 PERLVAR(I, perldb, U32)
305 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
307 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
309 /* pseudo environmental stuff */
310 PERLVAR(I, origargc, int)
311 PERLVAR(I, origargv, char **)
312 PERLVAR(I, envgv, GV *)
313 PERLVAR(I, incgv, GV *)
314 PERLVAR(I, hintgv, GV *)
315 PERLVAR(I, origfilename, char *)
316 PERLVAR(I, diehook, SV *)
317 PERLVAR(I, warnhook, SV *)
320 PERLVAR(I, patchlevel, SV *)
321 PERLVAR(I, localpatches, const char * const *)
322 PERLVARI(I, splitstr, const char *, " ")
324 PERLVAR(I, minus_c, bool)
325 PERLVAR(I, minus_n, bool)
326 PERLVAR(I, minus_p, bool)
327 PERLVAR(I, minus_l, bool)
328 PERLVAR(I, minus_a, bool)
329 PERLVAR(I, minus_F, bool)
330 PERLVAR(I, doswitches, bool)
331 PERLVAR(I, minus_E, bool)
333 PERLVAR(I, inplace, char *)
334 PERLVAR(I, e_script, SV *)
336 PERLVAR(I, basetime, Time_t) /* $^T */
338 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
339 /* top fd to pass to subprocesses */
340 PERLVAR(I, statusvalue, I32) /* $? */
342 PERLVAR(I, statusvalue_vms, U32)
344 PERLVAR(I, statusvalue_posix, I32)
347 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
348 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
350 /* shortcuts to various I/O objects */
351 PERLVAR(I, stdingv, GV *) /* *STDIN */
352 PERLVAR(I, stderrgv, GV *) /* *STDERR */
353 PERLVAR(I, argvgv, GV *) /* *ARGV */
354 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
355 PERLVAR(I, argvout_stack, AV *)
357 /* shortcuts to regexp stuff */
358 PERLVAR(I, replgv, GV *) /* *^R */
360 /* shortcuts to misc objects */
361 PERLVAR(I, errgv, GV *) /* *@ */
363 /* shortcuts to debugging objects */
364 PERLVAR(I, DBgv, GV *) /* *DB::DB */
365 PERLVAR(I, DBline, GV *) /* *DB::line */
368 =for apidoc mn|GV *|PL_DBsub
369 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
370 the SV which holds the name of the sub being debugged. This is the C
371 variable which corresponds to Perl's $DB::sub variable. See
374 =for apidoc mn|SV *|PL_DBsingle
375 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
376 boolean which indicates whether subs are being single-stepped.
377 Single-stepping is automatically turned on after every step. This is the C
378 variable which corresponds to Perl's $DB::single variable. See
381 =for apidoc mn|SV *|PL_DBtrace
382 Trace variable used when Perl is run in debugging mode, with the B<-d>
383 switch. This is the C variable which corresponds to Perl's $DB::trace
384 variable. See C<PL_DBsingle>.
389 PERLVAR(I, DBsub, GV *) /* *DB::sub */
390 PERLVAR(I, DBsingle, SV *) /* $DB::single */
391 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
392 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
393 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
395 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
398 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
399 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
400 PERLVAR(I, curstname, SV *) /* name of current package */
401 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
402 PERLVAR(I, endav, AV *) /* names of END subroutines */
403 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
404 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
405 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
407 /* subprocess state */
408 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
411 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
413 /* current interpreter roots */
414 PERLVAR(I, main_cv, CV *)
415 PERLVAR(I, main_root, OP *)
416 PERLVAR(I, main_start, OP *)
417 PERLVAR(I, eval_root, OP *)
418 PERLVAR(I, eval_start, OP *)
420 /* runtime control stuff */
421 PERLVARI(I, curcopdb, COP *, NULL)
423 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
424 PERLVAR(I, lastfd, int) /* what to preserve mode on */
425 PERLVAR(I, oldname, char *) /* what to preserve mode on */
426 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
427 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
428 /* Elements in this array have ';' appended and are injected as a single line
429 into the tokeniser. You can't put any (literal) newlines into any program
430 you stuff in into this array, as the point where it's injected is expecting
431 a single physical line. */
432 PERLVAR(I, preambleav, AV *)
433 PERLVAR(I, mess_sv, SV *)
434 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
436 /* funky return mechanisms */
437 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
439 /* statics moved here for shared library purposes */
440 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
441 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
442 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
443 PERLVARI(I, laststype, U16, OP_STAT)
445 PERLVARI(I, laststatval, int, -1)
447 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
450 /* interpreter atexit processing */
451 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
452 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
453 /* list of exit functions */
456 =for apidoc Amn|HV*|PL_modglobal
458 C<PL_modglobal> is a general purpose, interpreter global HV for use by
459 extensions that need to keep information on a per-interpreter basis.
460 In a pinch, it can also be used as a symbol table for extensions
461 to share data among each other. It is a good idea to use keys
462 prefixed by the package name of the extension that owns the data.
467 PERLVAR(I, modglobal, HV *) /* per-interp module data */
469 /* these used to be in global before 5.004_68 */
470 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
472 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
474 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
475 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
476 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
477 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
479 #ifdef HAVE_INTERP_INTERN
480 PERLVAR(I, sys_intern, struct interp_intern)
481 /* platform internals */
484 /* more statics moved here */
485 PERLVAR(I, DBcv, CV *) /* from perl.c */
486 PERLVARI(I, generation, int, 100) /* from op.c */
488 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
490 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
491 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
492 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
493 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
496 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
497 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
498 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
499 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
500 PERLVARI(I, an, U32, 0) /* malloc sequence number */
502 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
503 PERLVARI(I, breakable_sub_gen, U32, 0)
506 /* exercise wrap-around */
507 #define PERL_COP_SEQMAX (U32_MAX-50)
509 #define PERL_COP_SEQMAX 0
511 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
512 #undef PERL_COP_SEQMAX
514 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
515 PERLVAR(I, origalen, U32)
516 PERLVAR(I, origenviron, char **)
517 #ifdef PERL_USES_PL_PIDSTATUS
518 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
520 PERLVAR(I, osname, char *) /* operating system */
522 PERLVAR(I, sighandlerp, Sighandler_t)
524 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
526 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
528 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
530 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
532 PERLVAR(I, subname, SV *) /* name of current subroutine */
534 PERLVAR(I, subline, I32) /* line this subroutine began on */
535 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
537 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
538 PERLVAR(I, padix, I32) /* lowest unused index - 1
539 in current "register" pad */
540 PERLVAR(I, constpadix, I32) /* lowest unused for constants */
542 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
544 #ifdef USE_LOCALE_COLLATE
545 PERLVAR(I, collation_name, char *) /* Name of current collation */
546 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
547 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
548 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
549 PERLVARI(I, collation_standard, bool, TRUE)
550 /* Assume simple collation */
551 #endif /* USE_LOCALE_COLLATE */
553 #ifdef PERL_SAWAMPERSAND
554 PERLVAR(I, sawampersand, U8) /* must save all match strings */
557 PERLVAR(I, unsafe, bool)
558 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
560 /* current phase the interpreter is in
561 for ordering this structure to remove holes, we're assuming that this is 4
563 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
565 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
567 /* This value may be set when embedding for full cleanup */
568 /* 0=none, 1=full, 2=full with checks */
569 /* mod_perl is special, and also assigns a meaning -1 */
570 PERLVARI(I, perl_destruct_level, signed char, 0)
572 #ifdef USE_LOCALE_NUMERIC
574 PERLVARI(I, numeric_standard, int, TRUE)
575 /* Assume simple numerics */
576 PERLVARI(I, numeric_local, bool, TRUE)
577 /* Assume local numerics */
578 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
579 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
581 #endif /* !USE_LOCALE_NUMERIC */
583 /* Unicode inversion lists */
584 PERLVAR(I, Latin1, SV *)
585 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
586 PERLVAR(I, AboveLatin1, SV *)
587 PERLVAR(I, InBitmap, SV *)
589 PERLVAR(I, NonL1NonFinalFold, SV *)
590 PERLVAR(I, HasMultiCharFold, SV *)
592 /* utf8 character class swashes */
593 PERLVAR(I, utf8_mark, SV *)
594 PERLVAR(I, utf8_X_regular_begin, SV *)
595 PERLVAR(I, utf8_X_extend, SV *)
596 PERLVAR(I, utf8_toupper, SV *)
597 PERLVAR(I, utf8_totitle, SV *)
598 PERLVAR(I, utf8_tolower, SV *)
599 PERLVAR(I, utf8_tofold, SV *)
600 PERLVAR(I, utf8_charname_begin, SV *)
601 PERLVAR(I, utf8_charname_continue, SV *)
603 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
604 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
605 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
607 PERLVAR(I, last_swash_hv, HV *)
608 PERLVAR(I, last_swash_tmps, U8 *)
609 PERLVAR(I, last_swash_slen, STRLEN)
610 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
611 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
614 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
616 /* One byte hole in the interpreter structure. */
619 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
620 PERLVAR(I, srand_called, bool)
622 /* Array of signal handlers, indexed by signal number, through which the C
623 signal handler dispatches. */
624 PERLVAR(I, psig_ptr, SV **)
625 /* Array of names of signals, indexed by signal number, for (re)use as the first
626 argument to a signal handler. Only one block of memory is allocated for
627 both psig_name and psig_ptr. */
628 PERLVAR(I, psig_name, SV **)
630 #if defined(PERL_IMPLICIT_SYS)
631 PERLVAR(I, Mem, struct IPerlMem *)
632 PERLVAR(I, MemShared, struct IPerlMem *)
633 PERLVAR(I, MemParse, struct IPerlMem *)
634 PERLVAR(I, Env, struct IPerlEnv *)
635 PERLVAR(I, StdIO, struct IPerlStdIO *)
636 PERLVAR(I, LIO, struct IPerlLIO *)
637 PERLVAR(I, Dir, struct IPerlDir *)
638 PERLVAR(I, Sock, struct IPerlSock *)
639 PERLVAR(I, Proc, struct IPerlProc *)
642 PERLVAR(I, ptr_table, PTR_TBL_t *)
643 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
645 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
648 #if defined(USE_ITHREADS)
649 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
651 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
652 values in op_pmoffset of pmop.
653 Entry 0 is an SV whose PV is a
654 "packed" list of IVs listing
655 the now-free slots in the array */
656 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
657 PERLVARI(I, stashpadmax, PADOFFSET, 64)
658 PERLVARI(I, stashpadix, PADOFFSET, 0)
661 #ifdef USE_REENTRANT_API
662 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
665 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
666 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
669 PERLVARI(I, perlio, PerlIOl *, NULL)
670 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
671 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
674 PERLVARI(I, encoding, SV *, NULL) /* character encoding */
676 PERLVAR(I, utf8_idstart, SV *)
677 PERLVAR(I, utf8_idcont, SV *)
678 PERLVAR(I, utf8_xidstart, SV *)
679 PERLVAR(I, utf8_perl_idstart, SV *)
680 PERLVAR(I, utf8_perl_idcont, SV *)
681 PERLVAR(I, utf8_xidcont, SV *)
683 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
685 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
686 PERLVARI(I, unitcheckav_save, AV *, NULL)
687 /* save UNITCHECK{}s when compiling */
689 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
691 /* Hooks to shared SVs and locks. */
692 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
693 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
695 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
697 /* This reference ensures that the mathoms are linked with perl */
698 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
700 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
702 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
704 /* Can shared object be destroyed */
705 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
708 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
711 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
713 /* Register of known Method Resolution Orders.
714 What this actually points to is an implementation detail (it may change to
715 a structure incorporating a reference count - use mro_get_from_name to
716 retrieve a C<struct mro_alg *> */
717 PERLVAR(I, registered_mros, HV *)
719 /* Compile-time block start/end hooks */
720 PERLVAR(I, blockhooks, AV *)
722 /* Everything that folds to a given character, for case insensitivity regex
724 PERLVARI(I, utf8_foldclosures, HV *, NULL)
726 /* List of characters that participate in folds (except marks, etc in
727 * multi-char folds) */
728 PERLVARI(I, utf8_foldable, SV *, NULL)
730 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
732 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
734 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
735 present always, as -DDEBUGGING must be binary compatible with non. */
736 PERLVARI(I, scopestack_name, const char * *, NULL)
738 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
740 /* Hook for File::Glob */
741 PERLVARI(I, globhook, globhook_t, NULL)
743 /* The last unconditional member of the interpreter structure when 5.21.6 was
744 released. The offset of the end of this is baked into a global variable in
745 any shared perl library which will allow a sanity test in future perl
747 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
749 #ifdef PERL_IMPLICIT_CONTEXT
750 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
751 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
752 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
753 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
757 #ifdef PERL_TRACK_MEMPOOL
758 /* For use with the memory debugging code in util.c */
759 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
762 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
763 /* File descriptor to talk to the child which dumps scalars. */
764 PERLVARI(I, dumper_fd, int, -1)
768 #ifdef DEBUG_LEAKING_SCALARS
769 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
772 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
774 #ifdef PERL_TRACE_OPS
775 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
776 If PERL_TRACE_OPS is enabled, we'll dump
777 a summary count of all ops executed in the
778 program at perl_destruct time. For
779 profiling/debugging only. Works only if
780 DEBUGGING is enabled, too. */
783 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
785 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
786 * above on where there are gaps which currently will be structure padding. */
788 /* Within a stable branch, new variables must be added to the very end, before
789 * this comment, for binary compatibility (the offsets of the old members must
791 * (Don't forget to add your variable also to perl_clone()!)
792 * XSUB.h provides wrapper functions via perlapi.h that make this
793 * irrelevant, but not all code may be expected to #include XSUB.h.