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.
13 /* These variables are per-interpreter in threaded/multiplicity builds,
16 * Don't forget to re-run regen/embed.pl to propagate changes! */
18 /* New variables must be added to the very end for binary compatibility. */
20 /* DON'T FORGET to add your variable also to perl_clone()! (in sv.c) */
22 /* The 'I' prefix is only needed for vars that need appropriate #defines
23 * generated when built with or without MULTIPLICITY. It is also used
24 * to generate the appropriate export list for win32. If the variable
25 * needs to be initialized, use PERLVARI.
27 * When building without MULTIPLICITY, these variables will be truly global.
29 * Important ones in the first cache line (if alignment is done right) */
31 PERLVAR(I, stack_sp, SV **) /* top of the stack */
32 PERLVAR(I, op, OP *) /* currently executing op */
33 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
35 PERLVAR(I, stack_base, SV **)
36 PERLVAR(I, stack_max, SV **)
38 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
39 LEAVEing scopes we've ENTERed */
40 PERLVAR(I, savestack_ix, I32)
41 PERLVAR(I, savestack_max, I32)
43 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
44 PERLVAR(I, scopestack_ix, I32)
45 PERLVAR(I, scopestack_max, I32)
47 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
48 PERLVARI(I, tmps_ix, SSize_t, -1)
49 PERLVARI(I, tmps_floor, SSize_t, -1)
50 PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */
52 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
54 PERLVAR(I, markstack_ptr, I32 *)
55 PERLVAR(I, markstack_max, I32 *)
57 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
59 #ifdef PERL_HASH_RANDOMIZE_KEYS
60 #ifdef USE_PERL_PERTURB_KEYS
61 PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
63 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
65 PERLVAR(I, strtab, HV *) /* shared string table */
66 /* prog counter for the currently executing OP_MULTIDEREF Used to signal
67 * to S_find_uninit_var() where we are */
68 PERLVAR(I, multideref_pc, UNOP_AUX_item *)
70 /* Fields used by magic variables such as $@, $/ and so on */
71 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
72 PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
74 PERLVAR(I, tainting, bool) /* ? doing taint checks */
75 PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
77 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
78 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
79 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
80 * flag; then various places such as av_store() skip mg_set(ary) if this
81 * flag is set, and various magic vtable methods set flags like
82 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
83 * control returns to pp_push or whatever, it sees if any of those flags
84 * have been set, and if so finally calls mg_set().
86 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
87 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
88 * in hot code like pp_push.
90 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
93 =for apidoc_section $warning
94 =for apidoc mn|U8|PL_dowarn
96 The C variable that roughly corresponds to Perl's C<$^W> warning variable.
97 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
98 collection of flag bits.
100 On threaded perls, each thread has an independent copy of this variable;
101 each initialized at creation time with the current value of the creating
107 PERLVAR(I, dowarn, U8)
109 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
114 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
118 =for apidoc Amn|GV *|PL_defgv
120 The GV representing C<*_>. Useful for access to C<$_>.
122 On threaded perls, each thread has an independent copy of this variable;
123 each initialized at creation time with the current value of the creating
129 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
130 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
131 PERLVAR(I, defgv, GV *) /* the *_ glob */
134 =for apidoc Amn|HV*|PL_curstash
136 The stash for the package code will be compiled into.
138 On threaded perls, each thread has an independent copy of this variable;
139 each initialized at creation time with the current value of the creating
146 PERLVAR(I, defstash, HV *) /* main symbol table */
147 PERLVAR(I, curstash, HV *) /* symbol table for current package */
150 =for apidoc Amn|COP*|PL_curcop
152 The currently active COP (control op) roughly representing the current
153 statement in the source.
155 On threaded perls, each thread has an independent copy of this variable;
156 each initialized at creation time with the current value of the creating
162 PERLVAR(I, curcop, COP *)
163 PERLVAR(I, curstack, AV *) /* THE STACK */
164 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
165 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
168 /* memory management */
169 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
171 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
172 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
174 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
175 PERLVARI(I, reg_curpm, PMOP*, NULL)
177 /* the currently active slab in a chain of slabs of regmatch states,
178 * and the currently active state within that slab. This stack of states
179 * is shared amongst re-entrant calls to the regex engine */
181 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
182 PERLVAR(I, regmatch_state, regmatch_state *)
184 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
187 =for apidoc_section $SV
188 =for apidoc Amn|SV|PL_sv_undef
189 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
191 =for apidoc Amn|SV|PL_sv_no
192 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
195 =for apidoc Amn|SV|PL_sv_yes
196 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
199 =for apidoc Amn|SV|PL_sv_zero
200 This readonly SV has a zero numeric value and a C<"0"> string value. It's
201 similar to C<L</PL_sv_no>> except for its string value. Can be used as a
202 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
203 C<&PL_sv_zero>. Introduced in 5.28.
209 PERLVAR(I, sv_yes, SV)
210 PERLVAR(I, sv_undef, SV)
211 PERLVAR(I, sv_no, SV)
212 PERLVAR(I, sv_zero, SV)
214 /* store the immortals as an array to ensure they are contiguous in
215 * memory: makes SvIMMORTAL_INTERP(sv) possible */
216 PERLVARA(I, sv_immortals, 4, SV)
219 PERLVAR(I, padname_undef, PADNAME)
220 PERLVAR(I, padname_const, PADNAME)
223 =for apidoc Cmn||PL_Sv
225 A scratch pad SV for whatever temporary use you need. Chiefly used as a
226 fallback by macros on platforms where L<perlapi/PERL_USE_GCC_BRACE_GROUPS>> is
227 unavailable, and which would otherwise would evaluate their SV parameter more
234 PERLVAR(I, parser, yy_parser *) /* current parser state */
236 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
240 =for apidoc Amn|STRLEN|PL_na
242 A convenience variable which is typically used with C<SvPV> when one
243 doesn't care about the length of the string. It is usually more efficient
244 to either declare a local variable and use that instead or to use the
250 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
254 PERLVAR(I, statcache, Stat_t) /* _ */
255 PERLVAR(I, statgv, GV *)
256 PERLVARI(I, statname, SV *, NULL)
259 =for apidoc_section $io
260 =for apidoc mn|SV*|PL_rs
262 The input record separator - C<$/> in Perl space.
264 On threaded perls, each thread has an independent copy of this variable;
265 each initialized at creation time with the current value of the creating
268 =for apidoc mn|GV*|PL_last_in_gv
270 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
272 On threaded perls, each thread has an independent copy of this variable;
273 each initialized at creation time with the current value of the creating
276 =for apidoc mn|GV*|PL_ofsgv
278 The glob containing the output field separator - C<*,> in Perl space.
280 On threaded perls, each thread has an independent copy of this variable;
281 each initialized at creation time with the current value of the creating
287 PERLVAR(I, rs, SV *) /* input record separator $/ */
288 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
289 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
290 PERLVAR(I, defoutgv, GV *) /* default FH for output */
291 PERLVARI(I, chopset, const char *, " \n-") /* $: */
292 PERLVAR(I, formtarget, SV *)
293 PERLVAR(I, bodytarget, SV *)
294 PERLVAR(I, toptarget, SV *)
297 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
298 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
300 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
301 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
302 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
304 /* statics "owned" by various functions */
305 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
307 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
310 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
311 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
312 PERLVAR(I, firstgv, GV *) /* $a */
313 PERLVAR(I, secondgv, GV *) /* $b */
316 PERLVAR(I, efloatbuf, char *)
317 PERLVAR(I, efloatsize, STRLEN)
319 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
323 =for apidoc_section $embedding
324 =for apidoc Amn|U8|PL_exit_flags
326 Contains flags controlling perl's behaviour on exit():
330 =item * C<PERL_EXIT_DESTRUCT_END>
332 If set, END blocks are executed when the interpreter is destroyed.
333 This is normally set by perl itself after the interpreter is
336 =item * C<PERL_EXIT_ABORT>
338 Call C<abort()> on exit. This is used internally by perl itself to
339 abort if exit is called while processing exit.
341 =item * C<PERL_EXIT_WARN>
345 =item * C<PERL_EXIT_EXPECTED>
347 Set by the L<perlfunc/exit> operator.
351 =for apidoc Amnh||PERL_EXIT_EXPECTED
352 =for apidoc Amnh||PERL_EXIT_ABORT
353 =for apidoc Amnh||PERL_EXIT_DESTRUCT_END
354 =for apidoc Amnh||PERL_EXIT_WARN
356 On threaded perls, each thread has an independent copy of this variable;
357 each initialized at creation time with the current value of the creating
363 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
365 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
366 PERLVAR(I, in_utf8_CTYPE_locale, bool)
367 PERLVAR(I, in_utf8_COLLATE_locale, bool)
368 PERLVAR(I, in_utf8_turkic_locale, bool)
369 #if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
370 PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
372 PERLVARA(I, locale_utf8ness, 256, char)
374 #ifdef USE_LOCALE_CTYPE
375 PERLVAR(I, warn_locale, SV *)
378 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
381 =for apidoc_section $optree_construction
382 =for apidoc Amn|peep_t|PL_peepp
384 Pointer to the per-subroutine peephole optimiser. This is a function
385 that gets called at the end of compilation of a Perl subroutine (or
386 equivalently independent piece of Perl code) to perform fixups of
387 some ops and to perform small-scale optimisations. The function is
388 called once for each subroutine that is compiled, and is passed, as sole
389 parameter, a pointer to the op that is the entry point to the subroutine.
390 It modifies the op tree in place.
392 The peephole optimiser should never be completely replaced. Rather,
393 add code to it by wrapping the existing optimiser. The basic way to do
394 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
395 If the new code wishes to operate on ops throughout the subroutine's
396 structure, rather than just at the top level, it is likely to be more
397 convenient to wrap the L</PL_rpeepp> hook.
399 On threaded perls, each thread has an independent copy of this variable;
400 each initialized at creation time with the current value of the creating
406 PERLVARI(I, peepp, peep_t, Perl_peep)
409 =for apidoc Amn|peep_t|PL_rpeepp
411 Pointer to the recursive peephole optimiser. This is a function
412 that gets called at the end of compilation of a Perl subroutine (or
413 equivalently independent piece of Perl code) to perform fixups of some
414 ops and to perform small-scale optimisations. The function is called
415 once for each chain of ops linked through their C<op_next> fields;
416 it is recursively called to handle each side chain. It is passed, as
417 sole parameter, a pointer to the op that is at the head of the chain.
418 It modifies the op tree in place.
420 The peephole optimiser should never be completely replaced. Rather,
421 add code to it by wrapping the existing optimiser. The basic way to do
422 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
423 If the new code wishes to operate only on ops at a subroutine's top level,
424 rather than throughout the structure, it is likely to be more convenient
425 to wrap the L</PL_peepp> hook.
427 On threaded perls, each thread has an independent copy of this variable;
428 each initialized at creation time with the current value of the creating
434 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
437 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
439 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.
440 This allows extensions to free any extra attribute they have locally attached to an OP.
441 It is also assured to first fire for the parent OP and then for its kids.
443 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.
445 On threaded perls, each thread has an independent copy of this variable;
446 each initialized at creation time with the current value of the creating
452 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
454 PERLVARI(I, watchaddr, char **, 0)
455 PERLVAR(I, watchok, char *)
457 PERLVAR(I, perldb, U32)
459 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
461 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
463 /* pseudo environmental stuff */
464 PERLVAR(I, origargc, int)
465 PERLVAR(I, origargv, char **)
466 PERLVAR(I, envgv, GV *)
467 PERLVAR(I, incgv, GV *)
468 PERLVAR(I, hintgv, GV *)
469 PERLVAR(I, origfilename, char *)
470 PERLVARI(I, xsubfilename, const char *, NULL)
471 PERLVAR(I, diehook, SV *)
472 PERLVAR(I, warnhook, SV *)
475 PERLVAR(I, patchlevel, SV *)
476 PERLVAR(I, localpatches, const char * const *)
477 PERLVARI(I, splitstr, const char *, " ")
479 PERLVAR(I, minus_c, bool)
480 PERLVAR(I, minus_n, bool)
481 PERLVAR(I, minus_p, bool)
482 PERLVAR(I, minus_l, bool)
483 PERLVAR(I, minus_a, bool)
484 PERLVAR(I, minus_F, bool)
485 PERLVAR(I, doswitches, bool)
486 PERLVAR(I, minus_E, bool)
488 PERLVAR(I, inplace, char *)
489 PERLVAR(I, e_script, SV *)
491 PERLVAR(I, basetime, Time_t) /* $^T */
493 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
494 /* top fd to pass to subprocesses */
495 PERLVAR(I, statusvalue, I32) /* $? */
497 PERLVAR(I, statusvalue_vms, U32)
499 PERLVAR(I, statusvalue_posix, I32)
502 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
503 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
505 /* shortcuts to various I/O objects */
506 PERLVAR(I, stdingv, GV *) /* *STDIN */
507 PERLVAR(I, stderrgv, GV *) /* *STDERR */
508 PERLVAR(I, argvgv, GV *) /* *ARGV */
509 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
510 PERLVAR(I, argvout_stack, AV *)
512 /* shortcuts to regexp stuff */
513 PERLVAR(I, replgv, GV *) /* *^R */
515 /* shortcuts to misc objects */
516 PERLVAR(I, errgv, GV *) /* *@ */
518 /* shortcuts to debugging objects */
519 PERLVAR(I, DBgv, GV *) /* *DB::DB */
520 PERLVAR(I, DBline, GV *) /* *DB::line */
523 =for apidoc_section $debugging
524 =for apidoc mn|GV *|PL_DBsub
525 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
526 the SV which holds the name of the sub being debugged. This is the C
527 variable which corresponds to Perl's $DB::sub variable. See
530 On threaded perls, each thread has an independent copy of this variable;
531 each initialized at creation time with the current value of the creating
534 =for apidoc mn|SV *|PL_DBsingle
535 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
536 boolean which indicates whether subs are being single-stepped.
537 Single-stepping is automatically turned on after every step. This is the C
538 variable which corresponds to Perl's $DB::single variable. See
541 On threaded perls, each thread has an independent copy of this variable;
542 each initialized at creation time with the current value of the creating
545 =for apidoc mn|SV *|PL_DBtrace
546 Trace variable used when Perl is run in debugging mode, with the B<-d>
547 switch. This is the C variable which corresponds to Perl's $DB::trace
548 variable. See C<L</PL_DBsingle>>.
550 On threaded perls, each thread has an independent copy of this variable;
551 each initialized at creation time with the current value of the creating
557 PERLVAR(I, DBsub, GV *) /* *DB::sub */
558 PERLVAR(I, DBsingle, SV *) /* $DB::single */
559 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
560 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
561 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
563 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
566 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
567 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
568 PERLVAR(I, curstname, SV *) /* name of current package */
569 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
570 PERLVAR(I, endav, AV *) /* names of END subroutines */
571 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
572 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
573 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
575 /* subprocess state */
576 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
579 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
581 /* current interpreter roots */
582 PERLVAR(I, main_cv, CV *)
583 PERLVAR(I, main_root, OP *)
584 PERLVAR(I, main_start, OP *)
585 PERLVAR(I, eval_root, OP *)
586 PERLVAR(I, eval_start, OP *)
588 /* runtime control stuff */
589 PERLVARI(I, curcopdb, COP *, NULL)
591 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
592 PERLVAR(I, lastfd, int) /* what to preserve mode on */
593 PERLVAR(I, oldname, char *) /* what to preserve mode on */
594 /* Elements in this array have ';' appended and are injected as a single line
595 into the tokeniser. You can't put any (literal) newlines into any program
596 you stuff in into this array, as the point where it's injected is expecting
597 a single physical line. */
598 PERLVAR(I, preambleav, AV *)
599 PERLVAR(I, mess_sv, SV *)
600 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
602 /* funky return mechanisms */
603 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
605 /* statics moved here for shared library purposes */
606 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
607 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
608 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
609 PERLVARI(I, laststype, U16, OP_STAT)
611 PERLVARI(I, laststatval, int, -1)
613 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
616 /* interpreter atexit processing */
617 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
618 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
619 /* list of exit functions */
622 =for apidoc_section $HV
623 =for apidoc Amn|HV*|PL_modglobal
625 C<PL_modglobal> is a general purpose, interpreter global HV for use by
626 extensions that need to keep information on a per-interpreter basis.
627 In a pinch, it can also be used as a symbol table for extensions
628 to share data among each other. It is a good idea to use keys
629 prefixed by the package name of the extension that owns the data.
631 On threaded perls, each thread has an independent copy of this variable;
632 each initialized at creation time with the current value of the creating
638 PERLVAR(I, modglobal, HV *) /* per-interp module data */
640 /* these used to be in global before 5.004_68 */
641 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
643 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
645 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
646 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
647 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
648 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
650 #ifdef HAVE_INTERP_INTERN
651 PERLVAR(I, sys_intern, struct interp_intern)
652 /* platform internals */
655 /* more statics moved here */
656 PERLVAR(I, DBcv, CV *) /* from perl.c */
657 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
658 compile-time common elem detection */
660 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
662 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
663 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
664 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
665 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
668 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
669 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
670 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
671 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
672 PERLVARI(I, an, U32, 0) /* malloc sequence number */
674 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
675 PERLVARI(I, breakable_sub_gen, U32, 0)
678 /* exercise wrap-around */
679 #define PERL_COP_SEQMAX (U32_MAX-50)
681 #define PERL_COP_SEQMAX 0
683 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
684 #undef PERL_COP_SEQMAX
686 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
687 PERLVAR(I, origalen, U32)
688 PERLVAR(I, origenviron, char **)
689 #ifdef PERL_USES_PL_PIDSTATUS
690 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
692 PERLVAR(I, osname, char *) /* operating system */
694 PERLVAR(I, sighandlerp, Sighandler_t)
695 /* these two are provided only to solve library linkage issues; they
696 * should not be hooked by user code */
697 PERLVAR(I, sighandler1p, Sighandler1_t)
698 PERLVAR(I, sighandler3p, Sighandler3_t)
700 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
702 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
704 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
706 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
708 PERLVAR(I, subname, SV *) /* name of current subroutine */
710 PERLVAR(I, subline, I32) /* line this subroutine began on */
711 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
713 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
714 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
715 in current "register" pad */
716 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
718 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
720 #if defined(USE_POSIX_2008_LOCALE) \
721 && defined(USE_THREAD_SAFE_LOCALE) \
722 && ! defined(HAS_QUERYLOCALE)
724 PERLVARA(I, curlocales, 12, char *)
727 #ifdef USE_LOCALE_COLLATE
729 PERLVAR(I, collation_name, char *) /* Name of current collation */
730 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
731 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
732 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
733 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
734 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
735 /* Assume until proven otherwise that it works */
736 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
737 PERLVARI(I, collation_standard, bool, TRUE)
738 /* Assume simple collation */
739 #endif /* USE_LOCALE_COLLATE */
741 PERLVARI(I, langinfo_buf, char *, NULL)
742 PERLVARI(I, langinfo_bufsize, Size_t, 0)
743 PERLVARI(I, setlocale_buf, char *, NULL)
744 PERLVARI(I, setlocale_bufsize, Size_t, 0)
746 #ifdef PERL_SAWAMPERSAND
747 PERLVAR(I, sawampersand, U8) /* must save all match strings */
750 /* current phase the interpreter is in
751 for ordering this structure to remove holes, we're assuming that this is 4
753 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
755 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
757 PERLVAR(I, unsafe, bool)
758 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
761 =for apidoc_section $embedding
762 =for apidoc Amn|signed char|PL_perl_destruct_level
764 This value may be set when embedding for full cleanup.
774 =item * 2 or greater - full with checks.
778 If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
779 value of C<PL_perl_destruct_level> its value is used instead.
781 On threaded perls, each thread has an independent copy of this variable;
782 each initialized at creation time with the current value of the creating
787 /* mod_perl is special, and also assigns a meaning -1 */
788 PERLVARI(I, perl_destruct_level, signed char, 0)
790 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
792 PERLVAR(I, srand_called, bool)
794 #ifdef USE_LOCALE_NUMERIC
796 PERLVARI(I, numeric_underlying, bool, TRUE)
797 /* Assume underlying locale numerics */
798 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
800 PERLVARI(I, numeric_standard, int, TRUE)
801 /* Assume C locale numerics */
802 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
803 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
805 # ifdef HAS_POSIX_2008_LOCALE
807 PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
810 #endif /* !USE_LOCALE_NUMERIC */
812 /* Array of signal handlers, indexed by signal number, through which the C
813 signal handler dispatches. */
814 PERLVAR(I, psig_ptr, SV **)
815 /* Array of names of signals, indexed by signal number, for (re)use as the first
816 argument to a signal handler. Only one block of memory is allocated for
817 both psig_name and psig_ptr. */
818 PERLVAR(I, psig_name, SV **)
820 #if defined(PERL_IMPLICIT_SYS)
821 PERLVAR(I, Mem, struct IPerlMem *)
822 PERLVAR(I, MemShared, struct IPerlMem *)
823 PERLVAR(I, MemParse, struct IPerlMem *)
824 PERLVAR(I, Env, struct IPerlEnv *)
825 PERLVAR(I, StdIO, struct IPerlStdIO *)
826 PERLVAR(I, LIO, struct IPerlLIO *)
827 PERLVAR(I, Dir, struct IPerlDir *)
828 PERLVAR(I, Sock, struct IPerlSock *)
829 PERLVAR(I, Proc, struct IPerlProc *)
832 PERLVAR(I, ptr_table, PTR_TBL_t *)
833 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
835 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
838 #if defined(USE_ITHREADS)
839 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
841 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
842 values in op_pmoffset of pmop.
843 Entry 0 is an SV whose PV is a
844 "packed" list of IVs listing
845 the now-free slots in the array */
846 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
847 PERLVARI(I, stashpadmax, PADOFFSET, 64)
848 PERLVARI(I, stashpadix, PADOFFSET, 0)
851 #ifdef USE_REENTRANT_API
852 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
855 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
856 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
859 PERLVARI(I, perlio, PerlIOl *, NULL)
860 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
861 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
864 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
865 PERLVARI(I, unitcheckav_save, AV *, NULL)
866 /* save UNITCHECK{}s when compiling */
868 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
870 /* Hooks to shared SVs and locks. */
871 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
872 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
874 GCC_DIAG_IGNORE(-Wdeprecated-declarations)
876 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
878 /* This reference ensures that the mathoms are linked with perl */
879 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
881 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
885 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
887 /* Can shared object be destroyed */
888 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
891 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
894 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
896 /* Register of known Method Resolution Orders.
897 What this actually points to is an implementation detail (it may change to
898 a structure incorporating a reference count - use mro_get_from_name to
899 retrieve a C<struct mro_alg *> */
900 PERLVAR(I, registered_mros, HV *)
902 /* Compile-time block start/end hooks */
903 PERLVAR(I, blockhooks, AV *)
905 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
907 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
909 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
910 present always, as -DDEBUGGING must be binary compatible with non. */
911 PERLVARI(I, scopestack_name, const char * *, NULL)
913 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
915 /* Hook for File::Glob */
916 PERLVARI(I, globhook, globhook_t, NULL)
918 #if defined(MULTIPLICITY)
919 /* The last unconditional member of the interpreter structure when 5.18.0 was
920 released. The offset of the end of this is baked into a global variable in
921 any shared perl library which will allow a sanity test in future perl
923 # define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
926 #ifdef PERL_IMPLICIT_CONTEXT
927 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
928 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
931 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
932 /* For use with the memory debugging code in util.c. This is used only in
933 * DEBUGGING builds (as long as the relevant structure is defined), but
934 * defining it in non-debug builds too means that we retain binary
935 * compatibility between otherwise-compatible plain and debug builds. */
936 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
939 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
940 /* File descriptor to talk to the child which dumps scalars. */
941 PERLVARI(I, dumper_fd, int, -1)
945 #ifdef DEBUG_LEAKING_SCALARS
946 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
949 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
951 #ifdef PERL_TRACE_OPS
952 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
953 If PERL_TRACE_OPS is enabled, we'll dump
954 a summary count of all ops executed in the
955 program at perl_destruct time. For
956 profiling/debugging only. Works only if
957 DEBUGGING is enabled, too. */
960 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
962 PERLVARI(I, dump_re_max_len, STRLEN, 60)
964 /* For internal uses of randomness, this ensures the sequence of
965 * random numbers returned by rand() isn't modified by perl's internal
967 * This is important if the user has called srand() with a seed.
970 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
972 PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
974 PERLVAR(I, AboveLatin1, SV *)
975 PERLVAR(I, Assigned_invlist, SV *)
976 PERLVAR(I, GCB_invlist, SV *)
977 PERLVAR(I, HasMultiCharFold, SV *)
978 PERLVAR(I, InMultiCharFold, SV *)
979 PERLVAR(I, Latin1, SV *)
980 PERLVAR(I, LB_invlist, SV *)
981 PERLVAR(I, SB_invlist, SV *)
982 PERLVAR(I, SCX_invlist, SV *)
983 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
985 /* List of characters that participate in any fold defined by Unicode */
986 PERLVAR(I, in_some_fold, SV *)
988 /* Everything that folds to a given character, for case insensitivity regex
990 PERLVAR(I, utf8_foldclosures, SV *)
992 PERLVAR(I, utf8_idcont, SV *)
993 PERLVAR(I, utf8_idstart, SV *)
994 PERLVAR(I, utf8_perl_idcont, SV *)
995 PERLVAR(I, utf8_perl_idstart, SV *)
996 PERLVAR(I, utf8_xidcont, SV *)
997 PERLVAR(I, utf8_xidstart, SV *)
998 PERLVAR(I, WB_invlist, SV *)
999 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
1000 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
1001 PERLVAR(I, utf8_toupper, SV *)
1002 PERLVAR(I, utf8_totitle, SV *)
1003 PERLVAR(I, utf8_tolower, SV *)
1004 PERLVAR(I, utf8_tofold, SV *)
1005 PERLVAR(I, utf8_tosimplefold, SV *)
1006 PERLVAR(I, utf8_charname_begin, SV *)
1007 PERLVAR(I, utf8_charname_continue, SV *)
1008 PERLVAR(I, utf8_mark, SV *)
1009 PERLVARI(I, InBitmap, SV *, NULL)
1010 PERLVAR(I, CCC_non0_non230, SV *)
1011 PERLVAR(I, Private_Use, SV *)
1014 PERLVAR(I, mbrlen_ps, mbstate_t)
1017 PERLVAR(I, mbrtowc_ps, mbstate_t)
1020 PERLVAR(I, wcrtomb_ps, mbstate_t)
1023 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
1024 * above on where there are gaps which currently will be structure padding. */
1026 /* Within a stable branch, new variables must be added to the very end, before
1027 * this comment, for binary compatibility (the offsets of the old members must
1029 * (Don't forget to add your variable also to perl_clone()!)