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 */
77 PERLVAR(I, tainting, bool) /* doing taint checks */
78 PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
80 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
81 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
82 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
83 * flag; then various places such as av_store() skip mg_set(ary) if this
84 * flag is set, and various magic vtable methods set flags like
85 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
86 * control returns to pp_push or whatever, it sees if any of those flags
87 * have been set, and if so finally calls mg_set().
89 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
90 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
91 * in hot code like pp_push.
93 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
95 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
96 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
97 PERLVAR(I, defgv, GV *) /* the *_ glob */
100 =for apidoc mn|bool|PL_dowarn
102 The C variable which corresponds to Perl's C<$^W> warning variable.
107 PERLVAR(I, dowarn, U8)
109 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
114 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
119 PERLVAR(I, defstash, HV *) /* main symbol table */
120 PERLVAR(I, curstash, HV *) /* symbol table for current package */
122 PERLVAR(I, curcop, COP *)
123 PERLVAR(I, curstack, AV *) /* THE STACK */
124 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
125 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
128 /* memory management */
129 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
131 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
132 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
134 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
135 PERLVARI(I, reg_curpm, PMOP*, NULL)
137 /* the currently active slab in a chain of slabs of regmatch states,
138 * and the currently active state within that slab. This stack of states
139 * is shared amongst re-entrant calls to the regex engine */
141 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
142 PERLVAR(I, regmatch_state, regmatch_state *)
144 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
147 =for apidoc Amn|SV|PL_sv_undef
148 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
150 =for apidoc Amn|SV|PL_sv_no
151 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
154 =for apidoc Amn|SV|PL_sv_yes
155 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
161 PERLVAR(I, sv_undef, SV)
162 PERLVAR(I, sv_no, SV)
163 PERLVAR(I, sv_yes, SV)
164 PERLVAR(I, padname_undef, PADNAME)
165 PERLVAR(I, padname_const, PADNAME)
166 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
168 PERLVAR(I, parser, yy_parser *) /* current parser state */
170 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
174 =for apidoc Amn|STRLEN|PL_na
176 A convenience variable which is typically used with C<SvPV> when one
177 doesn't care about the length of the string. It is usually more efficient
178 to either declare a local variable and use that instead or to use the
184 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
188 PERLVAR(I, statbuf, Stat_t)
189 PERLVAR(I, statcache, Stat_t) /* _ */
190 PERLVAR(I, statgv, GV *)
191 PERLVARI(I, statname, SV *, NULL)
194 =for apidoc mn|SV*|PL_rs
196 The input record separator - C<$/> in Perl space.
198 =for apidoc mn|GV*|PL_last_in_gv
200 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
202 =for apidoc mn|GV*|PL_ofsgv
204 The glob containing the output field separator - C<*,> in Perl space.
209 PERLVAR(I, rs, SV *) /* input record separator $/ */
210 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
211 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
212 PERLVAR(I, defoutgv, GV *) /* default FH for output */
213 PERLVARI(I, chopset, const char *, " \n-") /* $: */
214 PERLVAR(I, formtarget, SV *)
215 PERLVAR(I, bodytarget, SV *)
216 PERLVAR(I, toptarget, SV *)
219 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
220 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
222 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
223 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
224 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
226 /* statics "owned" by various functions */
227 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
229 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
232 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
233 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
234 PERLVAR(I, firstgv, GV *) /* $a */
235 PERLVAR(I, secondgv, GV *) /* $b */
238 PERLVAR(I, efloatbuf, char *)
239 PERLVAR(I, efloatsize, STRLEN)
241 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
244 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
246 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
247 PERLVAR(I, in_utf8_CTYPE_locale, bool)
248 PERLVAR(I, in_utf8_COLLATE_locale, bool)
249 #ifdef USE_LOCALE_CTYPE
250 PERLVAR(I, warn_locale, SV *)
253 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
256 =for apidoc Amn|peep_t|PL_peepp
258 Pointer to the per-subroutine peephole optimiser. This is a function
259 that gets called at the end of compilation of a Perl subroutine (or
260 equivalently independent piece of Perl code) to perform fixups of
261 some ops and to perform small-scale optimisations. The function is
262 called once for each subroutine that is compiled, and is passed, as sole
263 parameter, a pointer to the op that is the entry point to the subroutine.
264 It modifies the op tree in place.
266 The peephole optimiser should never be completely replaced. Rather,
267 add code to it by wrapping the existing optimiser. The basic way to do
268 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
269 If the new code wishes to operate on ops throughout the subroutine's
270 structure, rather than just at the top level, it is likely to be more
271 convenient to wrap the L</PL_rpeepp> hook.
276 PERLVARI(I, peepp, peep_t, Perl_peep)
279 =for apidoc Amn|peep_t|PL_rpeepp
281 Pointer to the recursive peephole optimiser. This is a function
282 that gets called at the end of compilation of a Perl subroutine (or
283 equivalently independent piece of Perl code) to perform fixups of some
284 ops and to perform small-scale optimisations. The function is called
285 once for each chain of ops linked through their C<op_next> fields;
286 it is recursively called to handle each side chain. It is passed, as
287 sole parameter, a pointer to the op that is at the head of the chain.
288 It modifies the op tree in place.
290 The peephole optimiser should never be completely replaced. Rather,
291 add code to it by wrapping the existing optimiser. The basic way to do
292 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
293 If the new code wishes to operate only on ops at a subroutine's top level,
294 rather than throughout the structure, it is likely to be more convenient
295 to wrap the L</PL_peepp> hook.
300 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
303 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
305 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.
306 This allows extensions to free any extra attribute they have locally attached to an OP.
307 It is also assured to first fire for the parent OP and then for its kids.
309 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.
314 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
316 PERLVARI(I, watchaddr, char **, 0)
317 PERLVAR(I, watchok, char *)
319 PERLVAR(I, perldb, U32)
321 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
323 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
325 /* pseudo environmental stuff */
326 PERLVAR(I, origargc, int)
327 PERLVAR(I, origargv, char **)
328 PERLVAR(I, envgv, GV *)
329 PERLVAR(I, incgv, GV *)
330 PERLVAR(I, hintgv, GV *)
331 PERLVAR(I, origfilename, char *)
332 PERLVARI(I, xsubfilename, const char *, NULL)
333 PERLVAR(I, diehook, SV *)
334 PERLVAR(I, warnhook, SV *)
337 PERLVAR(I, patchlevel, SV *)
338 PERLVAR(I, localpatches, const char * const *)
339 PERLVARI(I, splitstr, const char *, " ")
341 PERLVAR(I, minus_c, bool)
342 PERLVAR(I, minus_n, bool)
343 PERLVAR(I, minus_p, bool)
344 PERLVAR(I, minus_l, bool)
345 PERLVAR(I, minus_a, bool)
346 PERLVAR(I, minus_F, bool)
347 PERLVAR(I, doswitches, bool)
348 PERLVAR(I, minus_E, bool)
350 PERLVAR(I, inplace, char *)
351 PERLVAR(I, e_script, SV *)
353 PERLVAR(I, basetime, Time_t) /* $^T */
355 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
356 /* top fd to pass to subprocesses */
357 PERLVAR(I, statusvalue, I32) /* $? */
359 PERLVAR(I, statusvalue_vms, U32)
361 PERLVAR(I, statusvalue_posix, I32)
364 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
365 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
367 /* shortcuts to various I/O objects */
368 PERLVAR(I, stdingv, GV *) /* *STDIN */
369 PERLVAR(I, stderrgv, GV *) /* *STDERR */
370 PERLVAR(I, argvgv, GV *) /* *ARGV */
371 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
372 PERLVAR(I, argvout_stack, AV *)
374 /* shortcuts to regexp stuff */
375 PERLVAR(I, replgv, GV *) /* *^R */
377 /* shortcuts to misc objects */
378 PERLVAR(I, errgv, GV *) /* *@ */
380 /* shortcuts to debugging objects */
381 PERLVAR(I, DBgv, GV *) /* *DB::DB */
382 PERLVAR(I, DBline, GV *) /* *DB::line */
385 =for apidoc mn|GV *|PL_DBsub
386 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
387 the SV which holds the name of the sub being debugged. This is the C
388 variable which corresponds to Perl's $DB::sub variable. See
391 =for apidoc mn|SV *|PL_DBsingle
392 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
393 boolean which indicates whether subs are being single-stepped.
394 Single-stepping is automatically turned on after every step. This is the C
395 variable which corresponds to Perl's $DB::single variable. See
398 =for apidoc mn|SV *|PL_DBtrace
399 Trace variable used when Perl is run in debugging mode, with the B<-d>
400 switch. This is the C variable which corresponds to Perl's $DB::trace
401 variable. See C<L</PL_DBsingle>>.
406 PERLVAR(I, DBsub, GV *) /* *DB::sub */
407 PERLVAR(I, DBsingle, SV *) /* $DB::single */
408 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
409 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
410 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
412 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
415 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
416 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
417 PERLVAR(I, curstname, SV *) /* name of current package */
418 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
419 PERLVAR(I, endav, AV *) /* names of END subroutines */
420 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
421 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
422 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
424 /* subprocess state */
425 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
428 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
430 /* current interpreter roots */
431 PERLVAR(I, main_cv, CV *)
432 PERLVAR(I, main_root, OP *)
433 PERLVAR(I, main_start, OP *)
434 PERLVAR(I, eval_root, OP *)
435 PERLVAR(I, eval_start, OP *)
437 /* runtime control stuff */
438 PERLVARI(I, curcopdb, COP *, NULL)
440 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
441 PERLVAR(I, lastfd, int) /* what to preserve mode on */
442 PERLVAR(I, oldname, char *) /* what to preserve mode on */
443 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
444 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
445 /* Elements in this array have ';' appended and are injected as a single line
446 into the tokeniser. You can't put any (literal) newlines into any program
447 you stuff in into this array, as the point where it's injected is expecting
448 a single physical line. */
449 PERLVAR(I, preambleav, AV *)
450 PERLVAR(I, mess_sv, SV *)
451 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
453 /* funky return mechanisms */
454 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
456 /* statics moved here for shared library purposes */
457 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
458 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
459 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
460 PERLVARI(I, laststype, U16, OP_STAT)
462 PERLVARI(I, laststatval, int, -1)
464 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
467 /* interpreter atexit processing */
468 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
469 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
470 /* list of exit functions */
473 =for apidoc Amn|HV*|PL_modglobal
475 C<PL_modglobal> is a general purpose, interpreter global HV for use by
476 extensions that need to keep information on a per-interpreter basis.
477 In a pinch, it can also be used as a symbol table for extensions
478 to share data among each other. It is a good idea to use keys
479 prefixed by the package name of the extension that owns the data.
484 PERLVAR(I, modglobal, HV *) /* per-interp module data */
486 /* these used to be in global before 5.004_68 */
487 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
489 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
491 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
492 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
493 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
494 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
496 #ifdef HAVE_INTERP_INTERN
497 PERLVAR(I, sys_intern, struct interp_intern)
498 /* platform internals */
501 /* more statics moved here */
502 PERLVAR(I, DBcv, CV *) /* from perl.c */
503 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
504 compile-time common elem detection */
506 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
508 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
509 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
510 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
511 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
514 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
515 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
516 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
517 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
518 PERLVARI(I, an, U32, 0) /* malloc sequence number */
520 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
521 PERLVARI(I, breakable_sub_gen, U32, 0)
524 /* exercise wrap-around */
525 #define PERL_COP_SEQMAX (U32_MAX-50)
527 #define PERL_COP_SEQMAX 0
529 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
530 #undef PERL_COP_SEQMAX
532 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
533 PERLVAR(I, origalen, U32)
534 PERLVAR(I, origenviron, char **)
535 #ifdef PERL_USES_PL_PIDSTATUS
536 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
538 PERLVAR(I, osname, char *) /* operating system */
540 PERLVAR(I, sighandlerp, Sighandler_t)
542 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
544 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
546 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
548 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
550 PERLVAR(I, subname, SV *) /* name of current subroutine */
552 PERLVAR(I, subline, I32) /* line this subroutine began on */
553 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
555 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
556 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
557 in current "register" pad */
558 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
560 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
562 #ifdef USE_LOCALE_COLLATE
563 PERLVAR(I, collation_name, char *) /* Name of current collation */
564 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
565 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
566 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
567 PERLVARA(I, strxfrm_min_char, 3, char)
568 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
569 /* Assume until proven otherwise that it works */
570 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
571 PERLVARI(I, collation_standard, bool, TRUE)
572 /* Assume simple collation */
573 #endif /* USE_LOCALE_COLLATE */
575 #ifdef PERL_SAWAMPERSAND
576 PERLVAR(I, sawampersand, U8) /* must save all match strings */
579 PERLVAR(I, unsafe, bool)
580 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
582 /* current phase the interpreter is in
583 for ordering this structure to remove holes, we're assuming that this is 4
585 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
587 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
589 /* This value may be set when embedding for full cleanup */
590 /* 0=none, 1=full, 2=full with checks */
591 /* mod_perl is special, and also assigns a meaning -1 */
592 PERLVARI(I, perl_destruct_level, signed char, 0)
594 #ifdef USE_LOCALE_NUMERIC
596 PERLVARI(I, numeric_standard, int, TRUE)
597 /* Assume simple numerics */
598 PERLVARI(I, numeric_local, bool, TRUE)
599 /* Assume local numerics */
600 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
601 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
603 #endif /* !USE_LOCALE_NUMERIC */
605 /* Unicode inversion lists */
606 PERLVAR(I, Latin1, SV *)
607 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
608 PERLVAR(I, AboveLatin1, SV *)
609 PERLVAR(I, InBitmap, SV *)
611 PERLVAR(I, NonL1NonFinalFold, SV *)
612 PERLVAR(I, HasMultiCharFold, SV *)
614 /* utf8 character class swashes */
615 PERLVAR(I, utf8_mark, SV *)
616 PERLVAR(I, utf8_toupper, SV *)
617 PERLVAR(I, utf8_totitle, SV *)
618 PERLVAR(I, utf8_tolower, SV *)
619 PERLVAR(I, utf8_tofold, SV *)
620 PERLVAR(I, utf8_charname_begin, SV *)
621 PERLVAR(I, utf8_charname_continue, SV *)
623 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
624 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
625 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
626 PERLVAR(I, GCB_invlist, SV *)
627 PERLVAR(I, LB_invlist, SV *)
628 PERLVAR(I, SB_invlist, SV *)
629 PERLVAR(I, WB_invlist, SV *)
631 PERLVAR(I, last_swash_hv, HV *)
632 PERLVAR(I, last_swash_tmps, U8 *)
633 PERLVAR(I, last_swash_slen, STRLEN)
634 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
635 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
638 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
640 /* One byte hole in the interpreter structure. */
643 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
644 PERLVAR(I, srand_called, bool)
646 /* Array of signal handlers, indexed by signal number, through which the C
647 signal handler dispatches. */
648 PERLVAR(I, psig_ptr, SV **)
649 /* Array of names of signals, indexed by signal number, for (re)use as the first
650 argument to a signal handler. Only one block of memory is allocated for
651 both psig_name and psig_ptr. */
652 PERLVAR(I, psig_name, SV **)
654 #if defined(PERL_IMPLICIT_SYS)
655 PERLVAR(I, Mem, struct IPerlMem *)
656 PERLVAR(I, MemShared, struct IPerlMem *)
657 PERLVAR(I, MemParse, struct IPerlMem *)
658 PERLVAR(I, Env, struct IPerlEnv *)
659 PERLVAR(I, StdIO, struct IPerlStdIO *)
660 PERLVAR(I, LIO, struct IPerlLIO *)
661 PERLVAR(I, Dir, struct IPerlDir *)
662 PERLVAR(I, Sock, struct IPerlSock *)
663 PERLVAR(I, Proc, struct IPerlProc *)
666 PERLVAR(I, ptr_table, PTR_TBL_t *)
667 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
669 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
672 #if defined(USE_ITHREADS)
673 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
675 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
676 values in op_pmoffset of pmop.
677 Entry 0 is an SV whose PV is a
678 "packed" list of IVs listing
679 the now-free slots in the array */
680 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
681 PERLVARI(I, stashpadmax, PADOFFSET, 64)
682 PERLVARI(I, stashpadix, PADOFFSET, 0)
685 #ifdef USE_REENTRANT_API
686 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
689 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
690 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
693 PERLVARI(I, perlio, PerlIOl *, NULL)
694 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
695 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
698 PERLVAR(I, utf8_idstart, SV *)
699 PERLVAR(I, utf8_idcont, SV *)
700 PERLVAR(I, utf8_xidstart, SV *)
701 PERLVAR(I, utf8_perl_idstart, SV *)
702 PERLVAR(I, utf8_perl_idcont, SV *)
703 PERLVAR(I, utf8_xidcont, SV *)
705 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
707 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
708 PERLVARI(I, unitcheckav_save, AV *, NULL)
709 /* save UNITCHECK{}s when compiling */
711 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
713 /* Hooks to shared SVs and locks. */
714 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
715 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
717 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
719 /* This reference ensures that the mathoms are linked with perl */
720 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
722 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
724 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
726 /* Can shared object be destroyed */
727 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
730 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
733 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
735 /* Register of known Method Resolution Orders.
736 What this actually points to is an implementation detail (it may change to
737 a structure incorporating a reference count - use mro_get_from_name to
738 retrieve a C<struct mro_alg *> */
739 PERLVAR(I, registered_mros, HV *)
741 /* Compile-time block start/end hooks */
742 PERLVAR(I, blockhooks, AV *)
744 /* Everything that folds to a given character, for case insensitivity regex
746 PERLVARI(I, utf8_foldclosures, HV *, NULL)
748 /* List of characters that participate in folds (except marks, etc in
749 * multi-char folds) */
750 PERLVARI(I, utf8_foldable, SV *, NULL)
752 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
754 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
756 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
757 present always, as -DDEBUGGING must be binary compatible with non. */
758 PERLVARI(I, scopestack_name, const char * *, NULL)
760 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
762 /* Hook for File::Glob */
763 PERLVARI(I, globhook, globhook_t, NULL)
765 /* The last unconditional member of the interpreter structure when 5.18.0 was
766 released. The offset of the end of this is baked into a global variable in
767 any shared perl library which will allow a sanity test in future perl
769 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
771 #ifdef PERL_IMPLICIT_CONTEXT
772 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
773 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
774 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
775 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
779 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
780 /* For use with the memory debugging code in util.c. This is used only in
781 * DEBUGGING builds (as long as the relevant structure is defined), but
782 * defining it in non-debug builds too means that we retain binary
783 * compatibility between otherwise-compatible plain and debug builds. */
784 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
787 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
788 /* File descriptor to talk to the child which dumps scalars. */
789 PERLVARI(I, dumper_fd, int, -1)
793 #ifdef DEBUG_LEAKING_SCALARS
794 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
797 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
799 #ifdef PERL_TRACE_OPS
800 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
801 If PERL_TRACE_OPS is enabled, we'll dump
802 a summary count of all ops executed in the
803 program at perl_destruct time. For
804 profiling/debugging only. Works only if
805 DEBUGGING is enabled, too. */
808 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
810 PERLVARI(I, dump_re_max_len, STRLEN, 0)
812 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
813 * above on where there are gaps which currently will be structure padding. */
815 /* Within a stable branch, new variables must be added to the very end, before
816 * this comment, for binary compatibility (the offsets of the old members must
818 * (Don't forget to add your variable also to perl_clone()!)
819 * XSUB.h provides wrapper functions via perlapi.h that make this
820 * irrelevant, but not all code may be expected to #include XSUB.h.