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 =for apidoc_section 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 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
58 PERLVAR(I, markstack_ptr, I32 *)
59 PERLVAR(I, markstack_max, I32 *)
61 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
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 $< */
81 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
94 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
97 =for apidoc mn|U8|PL_dowarn
99 The C variable that roughly corresponds to Perl's C<$^W> warning variable.
100 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
101 collection of flag bits.
106 PERLVAR(I, dowarn, U8)
108 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
113 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
117 =for apidoc Amn|GV *|PL_defgv
119 The GV representing C<*_>. Useful for access to C<$_>.
124 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
125 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
126 PERLVAR(I, defgv, GV *) /* the *_ glob */
129 =for apidoc Amn|HV*|PL_curstash
131 The stash for the package code will be compiled into.
137 PERLVAR(I, defstash, HV *) /* main symbol table */
138 PERLVAR(I, curstash, HV *) /* symbol table for current package */
141 =for apidoc Amn|COP*|PL_curcop
143 The currently active COP (control op) roughly representing the current
144 statement in the source.
149 PERLVAR(I, curcop, COP *)
150 PERLVAR(I, curstack, AV *) /* THE STACK */
151 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
152 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
155 /* memory management */
156 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
158 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
159 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
161 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
162 PERLVARI(I, reg_curpm, PMOP*, NULL)
164 /* the currently active slab in a chain of slabs of regmatch states,
165 * and the currently active state within that slab. This stack of states
166 * is shared amongst re-entrant calls to the regex engine */
168 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
169 PERLVAR(I, regmatch_state, regmatch_state *)
171 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
174 =for apidoc Amn|SV|PL_sv_undef
175 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
177 =for apidoc Amn|SV|PL_sv_no
178 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
181 =for apidoc Amn|SV|PL_sv_yes
182 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
185 =for apidoc Amn|SV|PL_sv_zero
186 This readonly SV has a zero numeric value and a C<"0"> string value. It's
187 similar to C<L</PL_sv_no>> except for its string value. Can be used as a
188 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
189 C<&PL_sv_zero>. Introduced in 5.28.
195 PERLVAR(I, sv_yes, SV)
196 PERLVAR(I, sv_undef, SV)
197 PERLVAR(I, sv_no, SV)
198 PERLVAR(I, sv_zero, SV)
200 /* store the immortals as an array to ensure they are contiguous in
201 * memory: makes SvIMMORTAL_INTERP(sv) possible */
202 PERLVARA(I, sv_immortals, 4, SV)
205 PERLVAR(I, padname_undef, PADNAME)
206 PERLVAR(I, padname_const, PADNAME)
209 =for apidoc Cmn||PL_Sv
211 A scratch pad SV for whatever temporary use you need. Chiefly used as a
212 fallback by macros on platforms where L<perlapi/PERL_USE_GCC_BRACE_GROUPS>> is
213 unavailable, and which would otherwise would evaluate their SV parameter more
220 PERLVAR(I, parser, yy_parser *) /* current parser state */
222 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
226 =for apidoc Amn|STRLEN|PL_na
228 A convenience variable which is typically used with C<SvPV> when one
229 doesn't care about the length of the string. It is usually more efficient
230 to either declare a local variable and use that instead or to use the
236 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
240 PERLVAR(I, statcache, Stat_t) /* _ */
241 PERLVAR(I, statgv, GV *)
242 PERLVARI(I, statname, SV *, NULL)
245 =for apidoc mn|SV*|PL_rs
247 The input record separator - C<$/> in Perl space.
249 =for apidoc mn|GV*|PL_last_in_gv
251 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
253 =for apidoc mn|GV*|PL_ofsgv
255 The glob containing the output field separator - C<*,> in Perl space.
260 PERLVAR(I, rs, SV *) /* input record separator $/ */
261 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
262 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
263 PERLVAR(I, defoutgv, GV *) /* default FH for output */
264 PERLVARI(I, chopset, const char *, " \n-") /* $: */
265 PERLVAR(I, formtarget, SV *)
266 PERLVAR(I, bodytarget, SV *)
267 PERLVAR(I, toptarget, SV *)
270 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
271 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
273 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
274 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
275 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
277 /* statics "owned" by various functions */
278 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
280 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
283 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
284 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
285 PERLVAR(I, firstgv, GV *) /* $a */
286 PERLVAR(I, secondgv, GV *) /* $b */
289 PERLVAR(I, efloatbuf, char *)
290 PERLVAR(I, efloatsize, STRLEN)
292 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
296 =for apidoc Amn|U8|PL_exit_flags
298 Contains flags controlling perl's behaviour on exit():
302 =item * C<PERL_EXIT_DESTRUCT_END>
304 If set, END blocks are executed when the interpreter is destroyed.
305 This is normally set by perl itself after the interpreter is
308 =item * C<PERL_EXIT_ABORT>
310 Call C<abort()> on exit. This is used internally by perl itself to
311 abort if exit is called while processing exit.
313 =item * C<PERL_EXIT_WARN>
317 =item * C<PERL_EXIT_EXPECTED>
319 Set by the L<perlfunc/exit> operator.
323 =for apidoc Amnh||PERL_EXIT_EXPECTED
324 =for apidoc Amnh||PERL_EXIT_ABORT
325 =for apidoc Amnh||PERL_EXIT_DESTRUCT_END
326 =for apidoc Amnh||PERL_EXIT_WARN
331 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
333 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
334 PERLVAR(I, in_utf8_CTYPE_locale, bool)
335 PERLVAR(I, in_utf8_COLLATE_locale, bool)
336 PERLVAR(I, in_utf8_turkic_locale, bool)
337 #if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
338 PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
340 PERLVARA(I, locale_utf8ness, 256, char)
342 #ifdef USE_LOCALE_CTYPE
343 PERLVAR(I, warn_locale, SV *)
346 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
349 =for apidoc Amn|peep_t|PL_peepp
351 Pointer to the per-subroutine peephole optimiser. This is a function
352 that gets called at the end of compilation of a Perl subroutine (or
353 equivalently independent piece of Perl code) to perform fixups of
354 some ops and to perform small-scale optimisations. The function is
355 called once for each subroutine that is compiled, and is passed, as sole
356 parameter, a pointer to the op that is the entry point to the subroutine.
357 It modifies the op tree in place.
359 The peephole optimiser should never be completely replaced. Rather,
360 add code to it by wrapping the existing optimiser. The basic way to do
361 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
362 If the new code wishes to operate on ops throughout the subroutine's
363 structure, rather than just at the top level, it is likely to be more
364 convenient to wrap the L</PL_rpeepp> hook.
369 PERLVARI(I, peepp, peep_t, Perl_peep)
372 =for apidoc Amn|peep_t|PL_rpeepp
374 Pointer to the recursive peephole optimiser. This is a function
375 that gets called at the end of compilation of a Perl subroutine (or
376 equivalently independent piece of Perl code) to perform fixups of some
377 ops and to perform small-scale optimisations. The function is called
378 once for each chain of ops linked through their C<op_next> fields;
379 it is recursively called to handle each side chain. It is passed, as
380 sole parameter, a pointer to the op that is at the head of the chain.
381 It modifies the op tree in place.
383 The peephole optimiser should never be completely replaced. Rather,
384 add code to it by wrapping the existing optimiser. The basic way to do
385 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
386 If the new code wishes to operate only on ops at a subroutine's top level,
387 rather than throughout the structure, it is likely to be more convenient
388 to wrap the L</PL_peepp> hook.
393 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
396 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
398 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.
399 This allows extensions to free any extra attribute they have locally attached to an OP.
400 It is also assured to first fire for the parent OP and then for its kids.
402 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.
407 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
409 PERLVARI(I, watchaddr, char **, 0)
410 PERLVAR(I, watchok, char *)
412 PERLVAR(I, perldb, U32)
414 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
416 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
418 /* pseudo environmental stuff */
419 PERLVAR(I, origargc, int)
420 PERLVAR(I, origargv, char **)
421 PERLVAR(I, envgv, GV *)
422 PERLVAR(I, incgv, GV *)
423 PERLVAR(I, hintgv, GV *)
424 PERLVAR(I, origfilename, char *)
425 PERLVARI(I, xsubfilename, const char *, NULL)
426 PERLVAR(I, diehook, SV *)
427 PERLVAR(I, warnhook, SV *)
430 PERLVAR(I, patchlevel, SV *)
431 PERLVAR(I, localpatches, const char * const *)
432 PERLVARI(I, splitstr, const char *, " ")
434 PERLVAR(I, minus_c, bool)
435 PERLVAR(I, minus_n, bool)
436 PERLVAR(I, minus_p, bool)
437 PERLVAR(I, minus_l, bool)
438 PERLVAR(I, minus_a, bool)
439 PERLVAR(I, minus_F, bool)
440 PERLVAR(I, doswitches, bool)
441 PERLVAR(I, minus_E, bool)
443 PERLVAR(I, inplace, char *)
444 PERLVAR(I, e_script, SV *)
446 PERLVAR(I, basetime, Time_t) /* $^T */
448 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
449 /* top fd to pass to subprocesses */
450 PERLVAR(I, statusvalue, I32) /* $? */
452 PERLVAR(I, statusvalue_vms, U32)
454 PERLVAR(I, statusvalue_posix, I32)
457 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
458 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
460 /* shortcuts to various I/O objects */
461 PERLVAR(I, stdingv, GV *) /* *STDIN */
462 PERLVAR(I, stderrgv, GV *) /* *STDERR */
463 PERLVAR(I, argvgv, GV *) /* *ARGV */
464 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
465 PERLVAR(I, argvout_stack, AV *)
467 /* shortcuts to regexp stuff */
468 PERLVAR(I, replgv, GV *) /* *^R */
470 /* shortcuts to misc objects */
471 PERLVAR(I, errgv, GV *) /* *@ */
473 /* shortcuts to debugging objects */
474 PERLVAR(I, DBgv, GV *) /* *DB::DB */
475 PERLVAR(I, DBline, GV *) /* *DB::line */
478 =for apidoc mn|GV *|PL_DBsub
479 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
480 the SV which holds the name of the sub being debugged. This is the C
481 variable which corresponds to Perl's $DB::sub variable. See
484 =for apidoc mn|SV *|PL_DBsingle
485 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
486 boolean which indicates whether subs are being single-stepped.
487 Single-stepping is automatically turned on after every step. This is the C
488 variable which corresponds to Perl's $DB::single variable. See
491 =for apidoc mn|SV *|PL_DBtrace
492 Trace variable used when Perl is run in debugging mode, with the B<-d>
493 switch. This is the C variable which corresponds to Perl's $DB::trace
494 variable. See C<L</PL_DBsingle>>.
499 PERLVAR(I, DBsub, GV *) /* *DB::sub */
500 PERLVAR(I, DBsingle, SV *) /* $DB::single */
501 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
502 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
503 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
505 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
508 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
509 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
510 PERLVAR(I, curstname, SV *) /* name of current package */
511 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
512 PERLVAR(I, endav, AV *) /* names of END subroutines */
513 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
514 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
515 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
517 /* subprocess state */
518 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
521 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
523 /* current interpreter roots */
524 PERLVAR(I, main_cv, CV *)
525 PERLVAR(I, main_root, OP *)
526 PERLVAR(I, main_start, OP *)
527 PERLVAR(I, eval_root, OP *)
528 PERLVAR(I, eval_start, OP *)
530 /* runtime control stuff */
531 PERLVARI(I, curcopdb, COP *, NULL)
533 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
534 PERLVAR(I, lastfd, int) /* what to preserve mode on */
535 PERLVAR(I, oldname, char *) /* what to preserve mode on */
536 /* Elements in this array have ';' appended and are injected as a single line
537 into the tokeniser. You can't put any (literal) newlines into any program
538 you stuff in into this array, as the point where it's injected is expecting
539 a single physical line. */
540 PERLVAR(I, preambleav, AV *)
541 PERLVAR(I, mess_sv, SV *)
542 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
544 /* funky return mechanisms */
545 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
547 /* statics moved here for shared library purposes */
548 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
549 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
550 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
551 PERLVARI(I, laststype, U16, OP_STAT)
553 PERLVARI(I, laststatval, int, -1)
555 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
558 /* interpreter atexit processing */
559 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
560 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
561 /* list of exit functions */
564 =for apidoc Amn|HV*|PL_modglobal
566 C<PL_modglobal> is a general purpose, interpreter global HV for use by
567 extensions that need to keep information on a per-interpreter basis.
568 In a pinch, it can also be used as a symbol table for extensions
569 to share data among each other. It is a good idea to use keys
570 prefixed by the package name of the extension that owns the data.
575 PERLVAR(I, modglobal, HV *) /* per-interp module data */
577 /* these used to be in global before 5.004_68 */
578 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
580 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
582 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
583 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
584 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
585 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
587 #ifdef HAVE_INTERP_INTERN
588 PERLVAR(I, sys_intern, struct interp_intern)
589 /* platform internals */
592 /* more statics moved here */
593 PERLVAR(I, DBcv, CV *) /* from perl.c */
594 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
595 compile-time common elem detection */
597 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
599 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
600 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
601 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
602 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
605 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
606 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
607 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
608 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
609 PERLVARI(I, an, U32, 0) /* malloc sequence number */
611 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
612 PERLVARI(I, breakable_sub_gen, U32, 0)
615 /* exercise wrap-around */
616 #define PERL_COP_SEQMAX (U32_MAX-50)
618 #define PERL_COP_SEQMAX 0
620 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
621 #undef PERL_COP_SEQMAX
623 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
624 PERLVAR(I, origalen, U32)
625 PERLVAR(I, origenviron, char **)
626 #ifdef PERL_USES_PL_PIDSTATUS
627 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
629 PERLVAR(I, osname, char *) /* operating system */
631 PERLVAR(I, sighandlerp, Sighandler_t)
632 /* these two are provided only to solve library linkage issues; they
633 * should not be hooked by user code */
634 PERLVAR(I, sighandler1p, Sighandler1_t)
635 PERLVAR(I, sighandler3p, Sighandler3_t)
637 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
639 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
641 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
643 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
645 PERLVAR(I, subname, SV *) /* name of current subroutine */
647 PERLVAR(I, subline, I32) /* line this subroutine began on */
648 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
650 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
651 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
652 in current "register" pad */
653 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
655 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
657 #if defined(USE_POSIX_2008_LOCALE) \
658 && defined(USE_THREAD_SAFE_LOCALE) \
659 && ! defined(HAS_QUERYLOCALE)
661 PERLVARA(I, curlocales, 12, char *)
664 #ifdef USE_LOCALE_COLLATE
666 PERLVAR(I, collation_name, char *) /* Name of current collation */
667 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
668 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
669 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
670 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
671 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
672 /* Assume until proven otherwise that it works */
673 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
674 PERLVARI(I, collation_standard, bool, TRUE)
675 /* Assume simple collation */
676 #endif /* USE_LOCALE_COLLATE */
678 PERLVARI(I, langinfo_buf, char *, NULL)
679 PERLVARI(I, langinfo_bufsize, Size_t, 0)
680 PERLVARI(I, setlocale_buf, char *, NULL)
681 PERLVARI(I, setlocale_bufsize, Size_t, 0)
683 #ifdef PERL_SAWAMPERSAND
684 PERLVAR(I, sawampersand, U8) /* must save all match strings */
687 /* current phase the interpreter is in
688 for ordering this structure to remove holes, we're assuming that this is 4
690 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
692 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
694 PERLVAR(I, unsafe, bool)
695 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
698 =for apidoc Amn|signed char|PL_perl_destruct_level
700 This value may be set when embedding for full cleanup.
710 =item * 2 or greater - full with checks.
714 If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
715 value of C<PL_perl_destruct_level> its value is used instead.
719 /* mod_perl is special, and also assigns a meaning -1 */
720 PERLVARI(I, perl_destruct_level, signed char, 0)
722 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
724 PERLVAR(I, srand_called, bool)
726 #ifdef USE_LOCALE_NUMERIC
728 PERLVARI(I, numeric_underlying, bool, TRUE)
729 /* Assume underlying locale numerics */
730 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
732 PERLVARI(I, numeric_standard, int, TRUE)
733 /* Assume C locale numerics */
734 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
735 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
737 # ifdef HAS_POSIX_2008_LOCALE
739 PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
742 #endif /* !USE_LOCALE_NUMERIC */
744 /* Array of signal handlers, indexed by signal number, through which the C
745 signal handler dispatches. */
746 PERLVAR(I, psig_ptr, SV **)
747 /* Array of names of signals, indexed by signal number, for (re)use as the first
748 argument to a signal handler. Only one block of memory is allocated for
749 both psig_name and psig_ptr. */
750 PERLVAR(I, psig_name, SV **)
752 #if defined(PERL_IMPLICIT_SYS)
753 PERLVAR(I, Mem, struct IPerlMem *)
754 PERLVAR(I, MemShared, struct IPerlMem *)
755 PERLVAR(I, MemParse, struct IPerlMem *)
756 PERLVAR(I, Env, struct IPerlEnv *)
757 PERLVAR(I, StdIO, struct IPerlStdIO *)
758 PERLVAR(I, LIO, struct IPerlLIO *)
759 PERLVAR(I, Dir, struct IPerlDir *)
760 PERLVAR(I, Sock, struct IPerlSock *)
761 PERLVAR(I, Proc, struct IPerlProc *)
764 PERLVAR(I, ptr_table, PTR_TBL_t *)
765 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
767 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
770 #if defined(USE_ITHREADS)
771 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
773 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
774 values in op_pmoffset of pmop.
775 Entry 0 is an SV whose PV is a
776 "packed" list of IVs listing
777 the now-free slots in the array */
778 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
779 PERLVARI(I, stashpadmax, PADOFFSET, 64)
780 PERLVARI(I, stashpadix, PADOFFSET, 0)
783 #ifdef USE_REENTRANT_API
784 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
787 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
788 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
791 PERLVARI(I, perlio, PerlIOl *, NULL)
792 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
793 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
796 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
797 PERLVARI(I, unitcheckav_save, AV *, NULL)
798 /* save UNITCHECK{}s when compiling */
800 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
802 /* Hooks to shared SVs and locks. */
803 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
804 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
806 GCC_DIAG_IGNORE(-Wdeprecated-declarations)
808 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
810 /* This reference ensures that the mathoms are linked with perl */
811 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
813 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
817 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
819 /* Can shared object be destroyed */
820 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
823 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
826 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
828 /* Register of known Method Resolution Orders.
829 What this actually points to is an implementation detail (it may change to
830 a structure incorporating a reference count - use mro_get_from_name to
831 retrieve a C<struct mro_alg *> */
832 PERLVAR(I, registered_mros, HV *)
834 /* Compile-time block start/end hooks */
835 PERLVAR(I, blockhooks, AV *)
837 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
839 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
841 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
842 present always, as -DDEBUGGING must be binary compatible with non. */
843 PERLVARI(I, scopestack_name, const char * *, NULL)
845 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
847 /* Hook for File::Glob */
848 PERLVARI(I, globhook, globhook_t, NULL)
850 #if defined(MULTIPLICITY)
851 /* The last unconditional member of the interpreter structure when 5.18.0 was
852 released. The offset of the end of this is baked into a global variable in
853 any shared perl library which will allow a sanity test in future perl
855 # define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
858 #ifdef PERL_IMPLICIT_CONTEXT
859 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
860 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
863 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
864 /* For use with the memory debugging code in util.c. This is used only in
865 * DEBUGGING builds (as long as the relevant structure is defined), but
866 * defining it in non-debug builds too means that we retain binary
867 * compatibility between otherwise-compatible plain and debug builds. */
868 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
871 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
872 /* File descriptor to talk to the child which dumps scalars. */
873 PERLVARI(I, dumper_fd, int, -1)
877 #ifdef DEBUG_LEAKING_SCALARS
878 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
881 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
883 #ifdef PERL_TRACE_OPS
884 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
885 If PERL_TRACE_OPS is enabled, we'll dump
886 a summary count of all ops executed in the
887 program at perl_destruct time. For
888 profiling/debugging only. Works only if
889 DEBUGGING is enabled, too. */
892 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
894 PERLVARI(I, dump_re_max_len, STRLEN, 60)
896 /* For internal uses of randomness, this ensures the sequence of
897 * random numbers returned by rand() isn't modified by perl's internal
899 * This is important if the user has called srand() with a seed.
902 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
904 PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
906 PERLVAR(I, AboveLatin1, SV *)
907 PERLVAR(I, Assigned_invlist, SV *)
908 PERLVAR(I, GCB_invlist, SV *)
909 PERLVAR(I, HasMultiCharFold, SV *)
910 PERLVAR(I, InMultiCharFold, SV *)
911 PERLVAR(I, Latin1, SV *)
912 PERLVAR(I, LB_invlist, SV *)
913 PERLVAR(I, SB_invlist, SV *)
914 PERLVAR(I, SCX_invlist, SV *)
915 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
917 /* List of characters that participate in any fold defined by Unicode */
918 PERLVAR(I, in_some_fold, SV *)
920 /* Everything that folds to a given character, for case insensitivity regex
922 PERLVAR(I, utf8_foldclosures, SV *)
924 PERLVAR(I, utf8_idcont, SV *)
925 PERLVAR(I, utf8_idstart, SV *)
926 PERLVAR(I, utf8_perl_idcont, SV *)
927 PERLVAR(I, utf8_perl_idstart, SV *)
928 PERLVAR(I, utf8_xidcont, SV *)
929 PERLVAR(I, utf8_xidstart, SV *)
930 PERLVAR(I, WB_invlist, SV *)
931 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
932 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
933 PERLVAR(I, utf8_toupper, SV *)
934 PERLVAR(I, utf8_totitle, SV *)
935 PERLVAR(I, utf8_tolower, SV *)
936 PERLVAR(I, utf8_tofold, SV *)
937 PERLVAR(I, utf8_tosimplefold, SV *)
938 PERLVAR(I, utf8_charname_begin, SV *)
939 PERLVAR(I, utf8_charname_continue, SV *)
940 PERLVAR(I, utf8_mark, SV *)
941 PERLVARI(I, InBitmap, SV *, NULL)
942 PERLVAR(I, CCC_non0_non230, SV *)
943 PERLVAR(I, Private_Use, SV *)
946 PERLVAR(I, mbrlen_ps, mbstate_t)
949 PERLVAR(I, mbrtowc_ps, mbstate_t)
952 PERLVAR(I, wcrtomb_ps, mbstate_t)
955 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
956 * above on where there are gaps which currently will be structure padding. */
958 /* Within a stable branch, new variables must be added to the very end, before
959 * this comment, for binary compatibility (the offsets of the old members must
961 * (Don't forget to add your variable also to perl_clone()!)