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 $1 et al are visible */
123 PERLVARI(I, reg_curpm, PMOP*, NULL)
125 /* the currently active slab in a chain of slabs of regmatch states,
126 * and the currently active state within that slab. This stack of states
127 * is shared amongst re-entrant calls to the regex engine */
129 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
130 PERLVAR(I, regmatch_state, regmatch_state *)
132 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
135 =for apidoc Amn|SV|PL_sv_undef
136 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
138 =for apidoc Amn|SV|PL_sv_no
139 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
142 =for apidoc Amn|SV|PL_sv_yes
143 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
149 PERLVAR(I, sv_undef, SV)
150 PERLVAR(I, sv_no, SV)
151 PERLVAR(I, sv_yes, SV)
152 PERLVAR(I, padname_undef, PADNAME)
153 PERLVAR(I, padname_const, PADNAME)
154 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
156 PERLVAR(I, parser, yy_parser *) /* current parser state */
158 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
162 =for apidoc Amn|STRLEN|PL_na
164 A convenience variable which is typically used with C<SvPV> when one
165 doesn't care about the length of the string. It is usually more efficient
166 to either declare a local variable and use that instead or to use the
172 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
176 PERLVAR(I, statbuf, Stat_t)
177 PERLVAR(I, statcache, Stat_t) /* _ */
178 PERLVAR(I, statgv, GV *)
179 PERLVARI(I, statname, SV *, NULL)
182 /* Will be removed soon after v5.21.7. See RT #121351 */
183 PERLVAR(I, timesbuf, struct tms)
187 =for apidoc mn|SV*|PL_rs
189 The input record separator - C<$/> 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)
242 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
245 =for apidoc Amn|peep_t|PL_peepp
247 Pointer to the per-subroutine peephole optimiser. This is a function
248 that gets called at the end of compilation of a Perl subroutine (or
249 equivalently independent piece of Perl code) to perform fixups of
250 some ops and to perform small-scale optimisations. The function is
251 called once for each subroutine that is compiled, and is passed, as sole
252 parameter, a pointer to the op that is the entry point to the subroutine.
253 It modifies the op tree in place.
255 The peephole optimiser should never be completely replaced. Rather,
256 add code to it by wrapping the existing optimiser. The basic way to do
257 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
258 If the new code wishes to operate on ops throughout the subroutine's
259 structure, rather than just at the top level, it is likely to be more
260 convenient to wrap the L</PL_rpeepp> hook.
265 PERLVARI(I, peepp, peep_t, Perl_peep)
268 =for apidoc Amn|peep_t|PL_rpeepp
270 Pointer to the recursive peephole optimiser. This is a function
271 that gets called at the end of compilation of a Perl subroutine (or
272 equivalently independent piece of Perl code) to perform fixups of some
273 ops and to perform small-scale optimisations. The function is called
274 once for each chain of ops linked through their C<op_next> fields;
275 it is recursively called to handle each side chain. It is passed, as
276 sole parameter, a pointer to the op that is at the head of the chain.
277 It modifies the op tree in place.
279 The peephole optimiser should never be completely replaced. Rather,
280 add code to it by wrapping the existing optimiser. The basic way to do
281 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
282 If the new code wishes to operate only on ops at a subroutine's top level,
283 rather than throughout the structure, it is likely to be more convenient
284 to wrap the L</PL_peepp> hook.
289 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
292 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
294 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.
295 This allows extensions to free any extra attribute they have locally attached to an OP.
296 It is also assured to first fire for the parent OP and then for its kids.
298 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.
303 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
305 PERLVARI(I, watchaddr, char **, 0)
306 PERLVAR(I, watchok, char *)
308 PERLVAR(I, perldb, U32)
310 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
312 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
314 /* pseudo environmental stuff */
315 PERLVAR(I, origargc, int)
316 PERLVAR(I, origargv, char **)
317 PERLVAR(I, envgv, GV *)
318 PERLVAR(I, incgv, GV *)
319 PERLVAR(I, hintgv, GV *)
320 PERLVAR(I, origfilename, char *)
321 PERLVARI(I, xsubfilename, const char *, NULL)
322 PERLVAR(I, diehook, SV *)
323 PERLVAR(I, warnhook, SV *)
326 PERLVAR(I, patchlevel, SV *)
327 PERLVAR(I, localpatches, const char * const *)
328 PERLVARI(I, splitstr, const char *, " ")
330 PERLVAR(I, minus_c, bool)
331 PERLVAR(I, minus_n, bool)
332 PERLVAR(I, minus_p, bool)
333 PERLVAR(I, minus_l, bool)
334 PERLVAR(I, minus_a, bool)
335 PERLVAR(I, minus_F, bool)
336 PERLVAR(I, doswitches, bool)
337 PERLVAR(I, minus_E, bool)
339 PERLVAR(I, inplace, char *)
340 PERLVAR(I, e_script, SV *)
342 PERLVAR(I, basetime, Time_t) /* $^T */
344 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
345 /* top fd to pass to subprocesses */
346 PERLVAR(I, statusvalue, I32) /* $? */
348 PERLVAR(I, statusvalue_vms, U32)
350 PERLVAR(I, statusvalue_posix, I32)
353 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
354 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
356 /* shortcuts to various I/O objects */
357 PERLVAR(I, stdingv, GV *) /* *STDIN */
358 PERLVAR(I, stderrgv, GV *) /* *STDERR */
359 PERLVAR(I, argvgv, GV *) /* *ARGV */
360 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
361 PERLVAR(I, argvout_stack, AV *)
363 /* shortcuts to regexp stuff */
364 PERLVAR(I, replgv, GV *) /* *^R */
366 /* shortcuts to misc objects */
367 PERLVAR(I, errgv, GV *) /* *@ */
369 /* shortcuts to debugging objects */
370 PERLVAR(I, DBgv, GV *) /* *DB::DB */
371 PERLVAR(I, DBline, GV *) /* *DB::line */
374 =for apidoc mn|GV *|PL_DBsub
375 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
376 the SV which holds the name of the sub being debugged. This is the C
377 variable which corresponds to Perl's $DB::sub variable. See
380 =for apidoc mn|SV *|PL_DBsingle
381 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
382 boolean which indicates whether subs are being single-stepped.
383 Single-stepping is automatically turned on after every step. This is the C
384 variable which corresponds to Perl's $DB::single variable. See
387 =for apidoc mn|SV *|PL_DBtrace
388 Trace variable used when Perl is run in debugging mode, with the B<-d>
389 switch. This is the C variable which corresponds to Perl's $DB::trace
390 variable. See C<PL_DBsingle>.
395 PERLVAR(I, DBsub, GV *) /* *DB::sub */
396 PERLVAR(I, DBsingle, SV *) /* $DB::single */
397 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
398 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
399 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
401 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
404 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
405 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
406 PERLVAR(I, curstname, SV *) /* name of current package */
407 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
408 PERLVAR(I, endav, AV *) /* names of END subroutines */
409 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
410 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
411 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
413 /* subprocess state */
414 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
417 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
419 /* current interpreter roots */
420 PERLVAR(I, main_cv, CV *)
421 PERLVAR(I, main_root, OP *)
422 PERLVAR(I, main_start, OP *)
423 PERLVAR(I, eval_root, OP *)
424 PERLVAR(I, eval_start, OP *)
426 /* runtime control stuff */
427 PERLVARI(I, curcopdb, COP *, NULL)
429 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
430 PERLVAR(I, lastfd, int) /* what to preserve mode on */
431 PERLVAR(I, oldname, char *) /* what to preserve mode on */
432 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
433 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
434 /* Elements in this array have ';' appended and are injected as a single line
435 into the tokeniser. You can't put any (literal) newlines into any program
436 you stuff in into this array, as the point where it's injected is expecting
437 a single physical line. */
438 PERLVAR(I, preambleav, AV *)
439 PERLVAR(I, mess_sv, SV *)
440 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
442 /* funky return mechanisms */
443 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
445 /* statics moved here for shared library purposes */
446 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
447 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
448 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
449 PERLVARI(I, laststype, U16, OP_STAT)
451 PERLVARI(I, laststatval, int, -1)
453 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
456 /* interpreter atexit processing */
457 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
458 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
459 /* list of exit functions */
462 =for apidoc Amn|HV*|PL_modglobal
464 C<PL_modglobal> is a general purpose, interpreter global HV for use by
465 extensions that need to keep information on a per-interpreter basis.
466 In a pinch, it can also be used as a symbol table for extensions
467 to share data among each other. It is a good idea to use keys
468 prefixed by the package name of the extension that owns the data.
473 PERLVAR(I, modglobal, HV *) /* per-interp module data */
475 /* these used to be in global before 5.004_68 */
476 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
478 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
480 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
481 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
482 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
483 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
485 #ifdef HAVE_INTERP_INTERN
486 PERLVAR(I, sys_intern, struct interp_intern)
487 /* platform internals */
490 /* more statics moved here */
491 PERLVAR(I, DBcv, CV *) /* from perl.c */
492 PERLVARI(I, generation, int, 100) /* from op.c */
494 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
496 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
497 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
498 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
499 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
502 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
503 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
504 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
505 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
506 PERLVARI(I, an, U32, 0) /* malloc sequence number */
508 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
509 PERLVARI(I, breakable_sub_gen, U32, 0)
512 /* exercise wrap-around */
513 #define PERL_COP_SEQMAX (U32_MAX-50)
515 #define PERL_COP_SEQMAX 0
517 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
518 #undef PERL_COP_SEQMAX
520 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
521 PERLVAR(I, origalen, U32)
522 PERLVAR(I, origenviron, char **)
523 #ifdef PERL_USES_PL_PIDSTATUS
524 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
526 PERLVAR(I, osname, char *) /* operating system */
528 PERLVAR(I, sighandlerp, Sighandler_t)
530 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
532 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
534 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
536 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
538 PERLVAR(I, subname, SV *) /* name of current subroutine */
540 PERLVAR(I, subline, I32) /* line this subroutine began on */
541 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
543 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
544 PERLVAR(I, padix, I32) /* lowest unused index - 1
545 in current "register" pad */
546 PERLVAR(I, constpadix, I32) /* lowest unused for constants */
548 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
550 #ifdef USE_LOCALE_COLLATE
551 PERLVAR(I, collation_name, char *) /* Name of current collation */
552 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
553 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
554 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
555 PERLVARI(I, collation_standard, bool, TRUE)
556 /* Assume simple collation */
557 #endif /* USE_LOCALE_COLLATE */
559 #ifdef PERL_SAWAMPERSAND
560 PERLVAR(I, sawampersand, U8) /* must save all match strings */
563 PERLVAR(I, unsafe, bool)
564 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
566 /* current phase the interpreter is in
567 for ordering this structure to remove holes, we're assuming that this is 4
569 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
571 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
573 /* This value may be set when embedding for full cleanup */
574 /* 0=none, 1=full, 2=full with checks */
575 /* mod_perl is special, and also assigns a meaning -1 */
576 PERLVARI(I, perl_destruct_level, signed char, 0)
578 #ifdef USE_LOCALE_NUMERIC
580 PERLVARI(I, numeric_standard, int, TRUE)
581 /* Assume simple numerics */
582 PERLVARI(I, numeric_local, bool, TRUE)
583 /* Assume local numerics */
584 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
585 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
587 #endif /* !USE_LOCALE_NUMERIC */
589 /* Unicode inversion lists */
590 PERLVAR(I, Latin1, SV *)
591 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
592 PERLVAR(I, AboveLatin1, SV *)
593 PERLVAR(I, InBitmap, SV *)
595 PERLVAR(I, NonL1NonFinalFold, SV *)
596 PERLVAR(I, HasMultiCharFold, SV *)
598 /* utf8 character class swashes */
599 PERLVAR(I, utf8_mark, SV *)
600 PERLVAR(I, utf8_X_regular_begin, SV *)
601 PERLVAR(I, utf8_X_extend, SV *)
602 PERLVAR(I, utf8_toupper, SV *)
603 PERLVAR(I, utf8_totitle, SV *)
604 PERLVAR(I, utf8_tolower, SV *)
605 PERLVAR(I, utf8_tofold, SV *)
606 PERLVAR(I, utf8_charname_begin, SV *)
607 PERLVAR(I, utf8_charname_continue, SV *)
609 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
610 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
611 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
613 PERLVAR(I, last_swash_hv, HV *)
614 PERLVAR(I, last_swash_tmps, U8 *)
615 PERLVAR(I, last_swash_slen, STRLEN)
616 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
617 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
620 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
622 /* One byte hole in the interpreter structure. */
625 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
626 PERLVAR(I, srand_called, bool)
628 /* Array of signal handlers, indexed by signal number, through which the C
629 signal handler dispatches. */
630 PERLVAR(I, psig_ptr, SV **)
631 /* Array of names of signals, indexed by signal number, for (re)use as the first
632 argument to a signal handler. Only one block of memory is allocated for
633 both psig_name and psig_ptr. */
634 PERLVAR(I, psig_name, SV **)
636 #if defined(PERL_IMPLICIT_SYS)
637 PERLVAR(I, Mem, struct IPerlMem *)
638 PERLVAR(I, MemShared, struct IPerlMem *)
639 PERLVAR(I, MemParse, struct IPerlMem *)
640 PERLVAR(I, Env, struct IPerlEnv *)
641 PERLVAR(I, StdIO, struct IPerlStdIO *)
642 PERLVAR(I, LIO, struct IPerlLIO *)
643 PERLVAR(I, Dir, struct IPerlDir *)
644 PERLVAR(I, Sock, struct IPerlSock *)
645 PERLVAR(I, Proc, struct IPerlProc *)
648 PERLVAR(I, ptr_table, PTR_TBL_t *)
649 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
651 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
654 #if defined(USE_ITHREADS)
655 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
657 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
658 values in op_pmoffset of pmop.
659 Entry 0 is an SV whose PV is a
660 "packed" list of IVs listing
661 the now-free slots in the array */
662 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
663 PERLVARI(I, stashpadmax, PADOFFSET, 64)
664 PERLVARI(I, stashpadix, PADOFFSET, 0)
667 #ifdef USE_REENTRANT_API
668 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
671 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
672 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
675 PERLVARI(I, perlio, PerlIOl *, NULL)
676 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
677 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
680 PERLVARI(I, encoding, SV *, NULL) /* $^ENCODING */
681 PERLVARI(I, lex_encoding, SV *, NULL) /* encoding pragma */
683 PERLVAR(I, utf8_idstart, SV *)
684 PERLVAR(I, utf8_idcont, SV *)
685 PERLVAR(I, utf8_xidstart, SV *)
686 PERLVAR(I, utf8_perl_idstart, SV *)
687 PERLVAR(I, utf8_perl_idcont, SV *)
688 PERLVAR(I, utf8_xidcont, SV *)
690 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
692 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
693 PERLVARI(I, unitcheckav_save, AV *, NULL)
694 /* save UNITCHECK{}s when compiling */
696 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
698 /* Hooks to shared SVs and locks. */
699 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
700 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
702 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
704 /* This reference ensures that the mathoms are linked with perl */
705 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
707 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
709 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
711 /* Can shared object be destroyed */
712 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
715 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
718 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
720 /* Register of known Method Resolution Orders.
721 What this actually points to is an implementation detail (it may change to
722 a structure incorporating a reference count - use mro_get_from_name to
723 retrieve a C<struct mro_alg *> */
724 PERLVAR(I, registered_mros, HV *)
726 /* Compile-time block start/end hooks */
727 PERLVAR(I, blockhooks, AV *)
729 /* Everything that folds to a given character, for case insensitivity regex
731 PERLVARI(I, utf8_foldclosures, HV *, NULL)
733 /* List of characters that participate in folds (except marks, etc in
734 * multi-char folds) */
735 PERLVARI(I, utf8_foldable, SV *, NULL)
737 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
739 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
741 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
742 present always, as -DDEBUGGING must be binary compatible with non. */
743 PERLVARI(I, scopestack_name, const char * *, NULL)
745 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
747 /* Hook for File::Glob */
748 PERLVARI(I, globhook, globhook_t, NULL)
750 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
752 /* The last unconditional member of the interpreter structure when 5.21.7 was
753 released. The offset of the end of this is baked into a global variable in
754 any shared perl library which will allow a sanity test in future perl
756 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
758 #ifdef PERL_IMPLICIT_CONTEXT
759 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
760 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
761 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
762 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
766 #ifdef PERL_TRACK_MEMPOOL
767 /* For use with the memory debugging code in util.c */
768 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
771 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
772 /* File descriptor to talk to the child which dumps scalars. */
773 PERLVARI(I, dumper_fd, int, -1)
777 #ifdef DEBUG_LEAKING_SCALARS
778 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
781 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
783 #ifdef PERL_TRACE_OPS
784 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
785 If PERL_TRACE_OPS is enabled, we'll dump
786 a summary count of all ops executed in the
787 program at perl_destruct time. For
788 profiling/debugging only. Works only if
789 DEBUGGING is enabled, too. */
792 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
794 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
795 * above on where there are gaps which currently will be structure padding. */
797 /* Within a stable branch, new variables must be added to the very end, before
798 * this comment, for binary compatibility (the offsets of the old members must
800 * (Don't forget to add your variable also to perl_clone()!)
801 * XSUB.h provides wrapper functions via perlapi.h that make this
802 * irrelevant, but not all code may be expected to #include XSUB.h.