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) /* first unalloced slot in tmps stack */
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 */
76 PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
78 PERLVAR(I, tainting, bool) /* doing taint checks */
79 PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
81 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
94 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
96 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
97 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
98 PERLVAR(I, defgv, GV *) /* the *_ glob */
101 =for apidoc mn|U8|PL_dowarn
103 The C variable that roughly corresponds to Perl's C<$^W> warning variable.
104 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
105 collection of flag bits.
110 PERLVAR(I, dowarn, U8)
112 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
117 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
122 PERLVAR(I, defstash, HV *) /* main symbol table */
123 PERLVAR(I, curstash, HV *) /* symbol table for current package */
125 PERLVAR(I, curcop, COP *)
126 PERLVAR(I, curstack, AV *) /* THE STACK */
127 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
128 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
131 /* memory management */
132 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
134 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
135 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
137 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
138 PERLVARI(I, reg_curpm, PMOP*, NULL)
140 /* the currently active slab in a chain of slabs of regmatch states,
141 * and the currently active state within that slab. This stack of states
142 * is shared amongst re-entrant calls to the regex engine */
144 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
145 PERLVAR(I, regmatch_state, regmatch_state *)
147 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
150 =for apidoc Amn|SV|PL_sv_undef
151 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
153 =for apidoc Amn|SV|PL_sv_no
154 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
157 =for apidoc Amn|SV|PL_sv_yes
158 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
161 =for apidoc Amn|SV|PL_sv_zero
162 This readonly SV has a zero numeric value and a C<"0"> string value. It's
163 similar to C<L</PL_sv_no>> except for its string value. Can be used as a
164 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
165 C<&PL_sv_zero>. Introduced in 5.28.
171 PERLVAR(I, sv_yes, SV)
172 PERLVAR(I, sv_undef, SV)
173 PERLVAR(I, sv_no, SV)
174 PERLVAR(I, sv_zero, SV)
176 /* store the immortals as an array to ensure they are contiguous in
177 * memory: makes SvIMMORTAL_INTERP(sv) possible */
178 PERLVARA(I, sv_immortals, 4, SV)
181 PERLVAR(I, padname_undef, PADNAME)
182 PERLVAR(I, padname_const, PADNAME)
183 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
185 PERLVAR(I, parser, yy_parser *) /* current parser state */
187 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
191 =for apidoc Amn|STRLEN|PL_na
193 A convenience variable which is typically used with C<SvPV> when one
194 doesn't care about the length of the string. It is usually more efficient
195 to either declare a local variable and use that instead or to use the
201 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
205 PERLVAR(I, statcache, Stat_t) /* _ */
206 PERLVAR(I, statgv, GV *)
207 PERLVARI(I, statname, SV *, NULL)
210 =for apidoc mn|SV*|PL_rs
212 The input record separator - C<$/> in Perl space.
214 =for apidoc mn|GV*|PL_last_in_gv
216 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
218 =for apidoc mn|GV*|PL_ofsgv
220 The glob containing the output field separator - C<*,> in Perl space.
225 PERLVAR(I, rs, SV *) /* input record separator $/ */
226 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
227 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
228 PERLVAR(I, defoutgv, GV *) /* default FH for output */
229 PERLVARI(I, chopset, const char *, " \n-") /* $: */
230 PERLVAR(I, formtarget, SV *)
231 PERLVAR(I, bodytarget, SV *)
232 PERLVAR(I, toptarget, SV *)
235 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
236 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
238 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
239 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
240 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
242 /* statics "owned" by various functions */
243 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
245 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
248 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
249 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
250 PERLVAR(I, firstgv, GV *) /* $a */
251 PERLVAR(I, secondgv, GV *) /* $b */
254 PERLVAR(I, efloatbuf, char *)
255 PERLVAR(I, efloatsize, STRLEN)
257 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
260 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
262 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
263 PERLVAR(I, in_utf8_CTYPE_locale, bool)
264 PERLVAR(I, in_utf8_COLLATE_locale, bool)
265 PERLVARA(I, locale_utf8ness, 256, char)
267 #ifdef USE_LOCALE_CTYPE
268 PERLVAR(I, warn_locale, SV *)
271 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
274 =for apidoc Amn|peep_t|PL_peepp
276 Pointer to the per-subroutine peephole optimiser. This is a function
277 that gets called at the end of compilation of a Perl subroutine (or
278 equivalently independent piece of Perl code) to perform fixups of
279 some ops and to perform small-scale optimisations. The function is
280 called once for each subroutine that is compiled, and is passed, as sole
281 parameter, a pointer to the op that is the entry point to the subroutine.
282 It modifies the op tree in place.
284 The peephole optimiser should never be completely replaced. Rather,
285 add code to it by wrapping the existing optimiser. The basic way to do
286 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
287 If the new code wishes to operate on ops throughout the subroutine's
288 structure, rather than just at the top level, it is likely to be more
289 convenient to wrap the L</PL_rpeepp> hook.
294 PERLVARI(I, peepp, peep_t, Perl_peep)
297 =for apidoc Amn|peep_t|PL_rpeepp
299 Pointer to the recursive peephole optimiser. This is a function
300 that gets called at the end of compilation of a Perl subroutine (or
301 equivalently independent piece of Perl code) to perform fixups of some
302 ops and to perform small-scale optimisations. The function is called
303 once for each chain of ops linked through their C<op_next> fields;
304 it is recursively called to handle each side chain. It is passed, as
305 sole parameter, a pointer to the op that is at the head of the chain.
306 It modifies the op tree in place.
308 The peephole optimiser should never be completely replaced. Rather,
309 add code to it by wrapping the existing optimiser. The basic way to do
310 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
311 If the new code wishes to operate only on ops at a subroutine's top level,
312 rather than throughout the structure, it is likely to be more convenient
313 to wrap the L</PL_peepp> hook.
318 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
321 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
323 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.
324 This allows extensions to free any extra attribute they have locally attached to an OP.
325 It is also assured to first fire for the parent OP and then for its kids.
327 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.
332 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
334 PERLVARI(I, watchaddr, char **, 0)
335 PERLVAR(I, watchok, char *)
337 PERLVAR(I, perldb, U32)
339 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
341 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
343 /* pseudo environmental stuff */
344 PERLVAR(I, origargc, int)
345 PERLVAR(I, origargv, char **)
346 PERLVAR(I, envgv, GV *)
347 PERLVAR(I, incgv, GV *)
348 PERLVAR(I, hintgv, GV *)
349 PERLVAR(I, origfilename, char *)
350 PERLVARI(I, xsubfilename, const char *, NULL)
351 PERLVAR(I, diehook, SV *)
352 PERLVAR(I, warnhook, SV *)
355 PERLVAR(I, patchlevel, SV *)
356 PERLVAR(I, localpatches, const char * const *)
357 PERLVARI(I, splitstr, const char *, " ")
359 PERLVAR(I, minus_c, bool)
360 PERLVAR(I, minus_n, bool)
361 PERLVAR(I, minus_p, bool)
362 PERLVAR(I, minus_l, bool)
363 PERLVAR(I, minus_a, bool)
364 PERLVAR(I, minus_F, bool)
365 PERLVAR(I, doswitches, bool)
366 PERLVAR(I, minus_E, bool)
368 PERLVAR(I, inplace, char *)
369 PERLVAR(I, e_script, SV *)
371 PERLVAR(I, basetime, Time_t) /* $^T */
373 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
374 /* top fd to pass to subprocesses */
375 PERLVAR(I, statusvalue, I32) /* $? */
377 PERLVAR(I, statusvalue_vms, U32)
379 PERLVAR(I, statusvalue_posix, I32)
382 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
383 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
385 /* shortcuts to various I/O objects */
386 PERLVAR(I, stdingv, GV *) /* *STDIN */
387 PERLVAR(I, stderrgv, GV *) /* *STDERR */
388 PERLVAR(I, argvgv, GV *) /* *ARGV */
389 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
390 PERLVAR(I, argvout_stack, AV *)
392 /* shortcuts to regexp stuff */
393 PERLVAR(I, replgv, GV *) /* *^R */
395 /* shortcuts to misc objects */
396 PERLVAR(I, errgv, GV *) /* *@ */
398 /* shortcuts to debugging objects */
399 PERLVAR(I, DBgv, GV *) /* *DB::DB */
400 PERLVAR(I, DBline, GV *) /* *DB::line */
403 =for apidoc mn|GV *|PL_DBsub
404 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
405 the SV which holds the name of the sub being debugged. This is the C
406 variable which corresponds to Perl's $DB::sub variable. See
409 =for apidoc mn|SV *|PL_DBsingle
410 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
411 boolean which indicates whether subs are being single-stepped.
412 Single-stepping is automatically turned on after every step. This is the C
413 variable which corresponds to Perl's $DB::single variable. See
416 =for apidoc mn|SV *|PL_DBtrace
417 Trace variable used when Perl is run in debugging mode, with the B<-d>
418 switch. This is the C variable which corresponds to Perl's $DB::trace
419 variable. See C<L</PL_DBsingle>>.
424 PERLVAR(I, DBsub, GV *) /* *DB::sub */
425 PERLVAR(I, DBsingle, SV *) /* $DB::single */
426 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
427 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
428 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
430 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
433 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
434 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
435 PERLVAR(I, curstname, SV *) /* name of current package */
436 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
437 PERLVAR(I, endav, AV *) /* names of END subroutines */
438 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
439 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
440 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
442 /* subprocess state */
443 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
446 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
448 /* current interpreter roots */
449 PERLVAR(I, main_cv, CV *)
450 PERLVAR(I, main_root, OP *)
451 PERLVAR(I, main_start, OP *)
452 PERLVAR(I, eval_root, OP *)
453 PERLVAR(I, eval_start, OP *)
455 /* runtime control stuff */
456 PERLVARI(I, curcopdb, COP *, NULL)
458 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
459 PERLVAR(I, lastfd, int) /* what to preserve mode on */
460 PERLVAR(I, oldname, char *) /* what to preserve mode on */
461 /* Elements in this array have ';' appended and are injected as a single line
462 into the tokeniser. You can't put any (literal) newlines into any program
463 you stuff in into this array, as the point where it's injected is expecting
464 a single physical line. */
465 PERLVAR(I, preambleav, AV *)
466 PERLVAR(I, mess_sv, SV *)
467 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
469 /* funky return mechanisms */
470 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
472 /* statics moved here for shared library purposes */
473 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
474 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
475 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
476 PERLVARI(I, laststype, U16, OP_STAT)
478 PERLVARI(I, laststatval, int, -1)
480 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
483 /* interpreter atexit processing */
484 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
485 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
486 /* list of exit functions */
489 =for apidoc Amn|HV*|PL_modglobal
491 C<PL_modglobal> is a general purpose, interpreter global HV for use by
492 extensions that need to keep information on a per-interpreter basis.
493 In a pinch, it can also be used as a symbol table for extensions
494 to share data among each other. It is a good idea to use keys
495 prefixed by the package name of the extension that owns the data.
500 PERLVAR(I, modglobal, HV *) /* per-interp module data */
502 /* these used to be in global before 5.004_68 */
503 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
505 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
507 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
508 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
509 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
510 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
512 #ifdef HAVE_INTERP_INTERN
513 PERLVAR(I, sys_intern, struct interp_intern)
514 /* platform internals */
517 /* more statics moved here */
518 PERLVAR(I, DBcv, CV *) /* from perl.c */
519 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
520 compile-time common elem detection */
522 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
524 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
525 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
526 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
527 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
530 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
531 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
532 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
533 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
534 PERLVARI(I, an, U32, 0) /* malloc sequence number */
536 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
537 PERLVARI(I, breakable_sub_gen, U32, 0)
540 /* exercise wrap-around */
541 #define PERL_COP_SEQMAX (U32_MAX-50)
543 #define PERL_COP_SEQMAX 0
545 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
546 #undef PERL_COP_SEQMAX
548 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
549 PERLVAR(I, origalen, U32)
550 PERLVAR(I, origenviron, char **)
551 #ifdef PERL_USES_PL_PIDSTATUS
552 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
554 PERLVAR(I, osname, char *) /* operating system */
556 PERLVAR(I, sighandlerp, Sighandler_t)
558 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
560 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
562 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
564 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
566 PERLVAR(I, subname, SV *) /* name of current subroutine */
568 PERLVAR(I, subline, I32) /* line this subroutine began on */
569 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
571 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
572 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
573 in current "register" pad */
574 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
576 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
578 #ifdef USE_LOCALE_COLLATE
579 PERLVAR(I, collation_name, char *) /* Name of current collation */
580 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
581 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
582 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
583 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
584 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
585 /* Assume until proven otherwise that it works */
586 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
587 PERLVARI(I, collation_standard, bool, TRUE)
588 /* Assume simple collation */
589 #endif /* USE_LOCALE_COLLATE */
591 PERLVARI(I, langinfo_buf, char *, NULL)
592 PERLVARI(I, langinfo_bufsize, Size_t, 0)
594 #ifdef PERL_SAWAMPERSAND
595 PERLVAR(I, sawampersand, U8) /* must save all match strings */
598 PERLVAR(I, unsafe, bool)
599 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
601 /* current phase the interpreter is in
602 for ordering this structure to remove holes, we're assuming that this is 4
604 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
606 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
608 /* This value may be set when embedding for full cleanup */
609 /* 0=none, 1=full, 2=full with checks */
610 /* mod_perl is special, and also assigns a meaning -1 */
611 PERLVARI(I, perl_destruct_level, signed char, 0)
613 #ifdef USE_LOCALE_NUMERIC
615 PERLVARI(I, numeric_standard, int, TRUE)
616 /* Assume C locale numerics */
617 PERLVARI(I, numeric_underlying, bool, TRUE)
618 /* Assume underlying locale numerics */
619 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
620 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
621 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
623 #endif /* !USE_LOCALE_NUMERIC */
625 /* Unicode inversion lists */
626 PERLVAR(I, Latin1, SV *)
627 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
628 PERLVAR(I, AboveLatin1, SV *)
629 PERLVAR(I, InBitmap, SV *)
631 PERLVAR(I, NonL1NonFinalFold, SV *)
632 PERLVAR(I, HasMultiCharFold, SV *)
634 /* utf8 character class swashes */
635 PERLVAR(I, utf8_mark, SV *)
636 PERLVAR(I, utf8_toupper, SV *)
637 PERLVAR(I, utf8_totitle, SV *)
638 PERLVAR(I, utf8_tolower, SV *)
639 PERLVAR(I, utf8_tofold, SV *)
640 PERLVAR(I, utf8_charname_begin, SV *)
641 PERLVAR(I, utf8_charname_continue, SV *)
643 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
644 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
645 PERLVAR(I, GCB_invlist, SV *)
646 PERLVAR(I, LB_invlist, SV *)
647 PERLVAR(I, SB_invlist, SV *)
648 PERLVAR(I, SCX_invlist, SV *)
649 PERLVAR(I, WB_invlist, SV *)
650 PERLVAR(I, Assigned_invlist, SV *)
651 PERLVAR(I, seen_deprecated_macro, HV *)
653 PERLVAR(I, last_swash_hv, HV *)
654 PERLVAR(I, last_swash_tmps, U8 *)
655 PERLVAR(I, last_swash_slen, STRLEN)
656 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
657 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
660 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
662 /* One byte hole in the interpreter structure. */
665 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
666 PERLVAR(I, srand_called, bool)
668 /* Array of signal handlers, indexed by signal number, through which the C
669 signal handler dispatches. */
670 PERLVAR(I, psig_ptr, SV **)
671 /* Array of names of signals, indexed by signal number, for (re)use as the first
672 argument to a signal handler. Only one block of memory is allocated for
673 both psig_name and psig_ptr. */
674 PERLVAR(I, psig_name, SV **)
676 #if defined(PERL_IMPLICIT_SYS)
677 PERLVAR(I, Mem, struct IPerlMem *)
678 PERLVAR(I, MemShared, struct IPerlMem *)
679 PERLVAR(I, MemParse, struct IPerlMem *)
680 PERLVAR(I, Env, struct IPerlEnv *)
681 PERLVAR(I, StdIO, struct IPerlStdIO *)
682 PERLVAR(I, LIO, struct IPerlLIO *)
683 PERLVAR(I, Dir, struct IPerlDir *)
684 PERLVAR(I, Sock, struct IPerlSock *)
685 PERLVAR(I, Proc, struct IPerlProc *)
688 PERLVAR(I, ptr_table, PTR_TBL_t *)
689 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
691 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
694 #if defined(USE_ITHREADS)
695 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
697 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
698 values in op_pmoffset of pmop.
699 Entry 0 is an SV whose PV is a
700 "packed" list of IVs listing
701 the now-free slots in the array */
702 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
703 PERLVARI(I, stashpadmax, PADOFFSET, 64)
704 PERLVARI(I, stashpadix, PADOFFSET, 0)
707 #ifdef USE_REENTRANT_API
708 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
711 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
712 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
715 PERLVARI(I, perlio, PerlIOl *, NULL)
716 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
717 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
720 PERLVAR(I, utf8_idstart, SV *)
721 PERLVAR(I, utf8_idcont, SV *)
722 PERLVAR(I, utf8_xidstart, SV *)
723 PERLVAR(I, utf8_perl_idstart, SV *)
724 PERLVAR(I, utf8_perl_idcont, SV *)
725 PERLVAR(I, utf8_xidcont, SV *)
727 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
729 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
730 PERLVARI(I, unitcheckav_save, AV *, NULL)
731 /* save UNITCHECK{}s when compiling */
733 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
735 /* Hooks to shared SVs and locks. */
736 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
737 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
739 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
741 /* This reference ensures that the mathoms are linked with perl */
742 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
744 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
746 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
748 /* Can shared object be destroyed */
749 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
752 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
755 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
757 /* Register of known Method Resolution Orders.
758 What this actually points to is an implementation detail (it may change to
759 a structure incorporating a reference count - use mro_get_from_name to
760 retrieve a C<struct mro_alg *> */
761 PERLVAR(I, registered_mros, HV *)
763 /* Compile-time block start/end hooks */
764 PERLVAR(I, blockhooks, AV *)
766 /* Everything that folds to a given character, for case insensitivity regex
768 PERLVARI(I, utf8_foldclosures, HV *, NULL)
770 /* List of characters that participate in folds (except marks, etc in
771 * multi-char folds) */
772 PERLVARI(I, utf8_foldable, SV *, NULL)
774 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
776 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
778 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
779 present always, as -DDEBUGGING must be binary compatible with non. */
780 PERLVARI(I, scopestack_name, const char * *, NULL)
782 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
784 /* Hook for File::Glob */
785 PERLVARI(I, globhook, globhook_t, NULL)
787 /* The last unconditional member of the interpreter structure when 5.18.0 was
788 released. The offset of the end of this is baked into a global variable in
789 any shared perl library which will allow a sanity test in future perl
791 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
793 #ifdef PERL_IMPLICIT_CONTEXT
794 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
795 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
796 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
797 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
801 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
802 /* For use with the memory debugging code in util.c. This is used only in
803 * DEBUGGING builds (as long as the relevant structure is defined), but
804 * defining it in non-debug builds too means that we retain binary
805 * compatibility between otherwise-compatible plain and debug builds. */
806 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
809 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
810 /* File descriptor to talk to the child which dumps scalars. */
811 PERLVARI(I, dumper_fd, int, -1)
815 #ifdef DEBUG_LEAKING_SCALARS
816 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
819 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
821 #ifdef PERL_TRACE_OPS
822 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
823 If PERL_TRACE_OPS is enabled, we'll dump
824 a summary count of all ops executed in the
825 program at perl_destruct time. For
826 profiling/debugging only. Works only if
827 DEBUGGING is enabled, too. */
830 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
832 PERLVARI(I, dump_re_max_len, STRLEN, 60)
834 /* For internal uses of randomness, this ensures the sequence of
835 * random numbers returned by rand() isn't modified by perl's internal
837 * This is important if the user has called srand() with a seed.
840 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
842 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
843 * above on where there are gaps which currently will be structure padding. */
845 /* Within a stable branch, new variables must be added to the very end, before
846 * this comment, for binary compatibility (the offsets of the old members must
848 * (Don't forget to add your variable also to perl_clone()!)
849 * XSUB.h provides wrapper functions via perlapi.h that make this
850 * irrelevant, but not all code may be expected to #include XSUB.h.