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)
207 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
208 PERLVAR(I, parser, yy_parser *) /* current parser state */
210 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
214 =for apidoc Amn|STRLEN|PL_na
216 A convenience variable which is typically used with C<SvPV> when one
217 doesn't care about the length of the string. It is usually more efficient
218 to either declare a local variable and use that instead or to use the
224 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
228 PERLVAR(I, statcache, Stat_t) /* _ */
229 PERLVAR(I, statgv, GV *)
230 PERLVARI(I, statname, SV *, NULL)
233 =for apidoc mn|SV*|PL_rs
235 The input record separator - C<$/> in Perl space.
237 =for apidoc mn|GV*|PL_last_in_gv
239 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
241 =for apidoc mn|GV*|PL_ofsgv
243 The glob containing the output field separator - C<*,> in Perl space.
248 PERLVAR(I, rs, SV *) /* input record separator $/ */
249 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
250 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
251 PERLVAR(I, defoutgv, GV *) /* default FH for output */
252 PERLVARI(I, chopset, const char *, " \n-") /* $: */
253 PERLVAR(I, formtarget, SV *)
254 PERLVAR(I, bodytarget, SV *)
255 PERLVAR(I, toptarget, SV *)
258 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
259 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
261 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
262 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
263 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
265 /* statics "owned" by various functions */
266 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
268 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
271 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
272 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
273 PERLVAR(I, firstgv, GV *) /* $a */
274 PERLVAR(I, secondgv, GV *) /* $b */
277 PERLVAR(I, efloatbuf, char *)
278 PERLVAR(I, efloatsize, STRLEN)
280 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
284 =for apidoc Amn|U8|PL_exit_flags
286 Contains flags controlling perl's behaviour on exit():
290 =item * C<PERL_EXIT_DESTRUCT_END>
292 If set, END blocks are executed when the interpreter is destroyed.
293 This is normally set by perl itself after the interpreter is
296 =item * C<PERL_EXIT_ABORT>
298 Call C<abort()> on exit. This is used internally by perl itself to
299 abort if exit is called while processing exit.
301 =item * C<PERL_EXIT_WARN>
305 =item * C<PERL_EXIT_EXPECTED>
307 Set by the L<perlfunc/exit> operator.
311 =for apidoc Amnh||PERL_EXIT_EXPECTED
312 =for apidoc Amnh||PERL_EXIT_ABORT
313 =for apidoc Amnh||PERL_EXIT_DESTRUCT_END
314 =for apidoc Amnh||PERL_EXIT_WARN
319 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
321 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
322 PERLVAR(I, in_utf8_CTYPE_locale, bool)
323 PERLVAR(I, in_utf8_COLLATE_locale, bool)
324 PERLVAR(I, in_utf8_turkic_locale, bool)
325 #if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
326 PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
328 PERLVARA(I, locale_utf8ness, 256, char)
330 #ifdef USE_LOCALE_CTYPE
331 PERLVAR(I, warn_locale, SV *)
334 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
337 =for apidoc Amn|peep_t|PL_peepp
339 Pointer to the per-subroutine peephole optimiser. This is a function
340 that gets called at the end of compilation of a Perl subroutine (or
341 equivalently independent piece of Perl code) to perform fixups of
342 some ops and to perform small-scale optimisations. The function is
343 called once for each subroutine that is compiled, and is passed, as sole
344 parameter, a pointer to the op that is the entry point to the subroutine.
345 It modifies the op tree in place.
347 The peephole optimiser should never be completely replaced. Rather,
348 add code to it by wrapping the existing optimiser. The basic way to do
349 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
350 If the new code wishes to operate on ops throughout the subroutine's
351 structure, rather than just at the top level, it is likely to be more
352 convenient to wrap the L</PL_rpeepp> hook.
357 PERLVARI(I, peepp, peep_t, Perl_peep)
360 =for apidoc Amn|peep_t|PL_rpeepp
362 Pointer to the recursive peephole optimiser. This is a function
363 that gets called at the end of compilation of a Perl subroutine (or
364 equivalently independent piece of Perl code) to perform fixups of some
365 ops and to perform small-scale optimisations. The function is called
366 once for each chain of ops linked through their C<op_next> fields;
367 it is recursively called to handle each side chain. It is passed, as
368 sole parameter, a pointer to the op that is at the head of the chain.
369 It modifies the op tree in place.
371 The peephole optimiser should never be completely replaced. Rather,
372 add code to it by wrapping the existing optimiser. The basic way to do
373 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
374 If the new code wishes to operate only on ops at a subroutine's top level,
375 rather than throughout the structure, it is likely to be more convenient
376 to wrap the L</PL_peepp> hook.
381 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
384 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
386 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.
387 This allows extensions to free any extra attribute they have locally attached to an OP.
388 It is also assured to first fire for the parent OP and then for its kids.
390 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.
395 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
397 PERLVARI(I, watchaddr, char **, 0)
398 PERLVAR(I, watchok, char *)
400 PERLVAR(I, perldb, U32)
402 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
404 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
406 /* pseudo environmental stuff */
407 PERLVAR(I, origargc, int)
408 PERLVAR(I, origargv, char **)
409 PERLVAR(I, envgv, GV *)
410 PERLVAR(I, incgv, GV *)
411 PERLVAR(I, hintgv, GV *)
412 PERLVAR(I, origfilename, char *)
413 PERLVARI(I, xsubfilename, const char *, NULL)
414 PERLVAR(I, diehook, SV *)
415 PERLVAR(I, warnhook, SV *)
418 PERLVAR(I, patchlevel, SV *)
419 PERLVAR(I, localpatches, const char * const *)
420 PERLVARI(I, splitstr, const char *, " ")
422 PERLVAR(I, minus_c, bool)
423 PERLVAR(I, minus_n, bool)
424 PERLVAR(I, minus_p, bool)
425 PERLVAR(I, minus_l, bool)
426 PERLVAR(I, minus_a, bool)
427 PERLVAR(I, minus_F, bool)
428 PERLVAR(I, doswitches, bool)
429 PERLVAR(I, minus_E, bool)
431 PERLVAR(I, inplace, char *)
432 PERLVAR(I, e_script, SV *)
434 PERLVAR(I, basetime, Time_t) /* $^T */
436 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
437 /* top fd to pass to subprocesses */
438 PERLVAR(I, statusvalue, I32) /* $? */
440 PERLVAR(I, statusvalue_vms, U32)
442 PERLVAR(I, statusvalue_posix, I32)
445 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
446 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
448 /* shortcuts to various I/O objects */
449 PERLVAR(I, stdingv, GV *) /* *STDIN */
450 PERLVAR(I, stderrgv, GV *) /* *STDERR */
451 PERLVAR(I, argvgv, GV *) /* *ARGV */
452 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
453 PERLVAR(I, argvout_stack, AV *)
455 /* shortcuts to regexp stuff */
456 PERLVAR(I, replgv, GV *) /* *^R */
458 /* shortcuts to misc objects */
459 PERLVAR(I, errgv, GV *) /* *@ */
461 /* shortcuts to debugging objects */
462 PERLVAR(I, DBgv, GV *) /* *DB::DB */
463 PERLVAR(I, DBline, GV *) /* *DB::line */
466 =for apidoc mn|GV *|PL_DBsub
467 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
468 the SV which holds the name of the sub being debugged. This is the C
469 variable which corresponds to Perl's $DB::sub variable. See
472 =for apidoc mn|SV *|PL_DBsingle
473 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
474 boolean which indicates whether subs are being single-stepped.
475 Single-stepping is automatically turned on after every step. This is the C
476 variable which corresponds to Perl's $DB::single variable. See
479 =for apidoc mn|SV *|PL_DBtrace
480 Trace variable used when Perl is run in debugging mode, with the B<-d>
481 switch. This is the C variable which corresponds to Perl's $DB::trace
482 variable. See C<L</PL_DBsingle>>.
487 PERLVAR(I, DBsub, GV *) /* *DB::sub */
488 PERLVAR(I, DBsingle, SV *) /* $DB::single */
489 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
490 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
491 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
493 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
496 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
497 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
498 PERLVAR(I, curstname, SV *) /* name of current package */
499 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
500 PERLVAR(I, endav, AV *) /* names of END subroutines */
501 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
502 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
503 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
505 /* subprocess state */
506 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
509 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
511 /* current interpreter roots */
512 PERLVAR(I, main_cv, CV *)
513 PERLVAR(I, main_root, OP *)
514 PERLVAR(I, main_start, OP *)
515 PERLVAR(I, eval_root, OP *)
516 PERLVAR(I, eval_start, OP *)
518 /* runtime control stuff */
519 PERLVARI(I, curcopdb, COP *, NULL)
521 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
522 PERLVAR(I, lastfd, int) /* what to preserve mode on */
523 PERLVAR(I, oldname, char *) /* what to preserve mode on */
524 /* Elements in this array have ';' appended and are injected as a single line
525 into the tokeniser. You can't put any (literal) newlines into any program
526 you stuff in into this array, as the point where it's injected is expecting
527 a single physical line. */
528 PERLVAR(I, preambleav, AV *)
529 PERLVAR(I, mess_sv, SV *)
530 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
532 /* funky return mechanisms */
533 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
535 /* statics moved here for shared library purposes */
536 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
537 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
538 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
539 PERLVARI(I, laststype, U16, OP_STAT)
541 PERLVARI(I, laststatval, int, -1)
543 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
546 /* interpreter atexit processing */
547 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
548 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
549 /* list of exit functions */
552 =for apidoc Amn|HV*|PL_modglobal
554 C<PL_modglobal> is a general purpose, interpreter global HV for use by
555 extensions that need to keep information on a per-interpreter basis.
556 In a pinch, it can also be used as a symbol table for extensions
557 to share data among each other. It is a good idea to use keys
558 prefixed by the package name of the extension that owns the data.
563 PERLVAR(I, modglobal, HV *) /* per-interp module data */
565 /* these used to be in global before 5.004_68 */
566 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
568 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
570 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
571 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
572 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
573 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
575 #ifdef HAVE_INTERP_INTERN
576 PERLVAR(I, sys_intern, struct interp_intern)
577 /* platform internals */
580 /* more statics moved here */
581 PERLVAR(I, DBcv, CV *) /* from perl.c */
582 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
583 compile-time common elem detection */
585 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
587 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
588 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
589 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
590 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
593 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
594 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
595 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
596 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
597 PERLVARI(I, an, U32, 0) /* malloc sequence number */
599 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
600 PERLVARI(I, breakable_sub_gen, U32, 0)
603 /* exercise wrap-around */
604 #define PERL_COP_SEQMAX (U32_MAX-50)
606 #define PERL_COP_SEQMAX 0
608 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
609 #undef PERL_COP_SEQMAX
611 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
612 PERLVAR(I, origalen, U32)
613 PERLVAR(I, origenviron, char **)
614 #ifdef PERL_USES_PL_PIDSTATUS
615 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
617 PERLVAR(I, osname, char *) /* operating system */
619 PERLVAR(I, sighandlerp, Sighandler_t)
620 /* these two are provided only to solve library linkage issues; they
621 * should not be hooked by user code */
622 PERLVAR(I, sighandler1p, Sighandler1_t)
623 PERLVAR(I, sighandler3p, Sighandler3_t)
625 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
627 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
629 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
632 =for apidoc Amn|runops_proc_t|PL_runops
634 See L<perlguts/Pluggable runops>.
639 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
641 PERLVAR(I, subname, SV *) /* name of current subroutine */
643 PERLVAR(I, subline, I32) /* line this subroutine began on */
644 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
646 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
647 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
648 in current "register" pad */
649 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
651 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
653 #if defined(USE_POSIX_2008_LOCALE) \
654 && defined(USE_THREAD_SAFE_LOCALE) \
655 && ! defined(HAS_QUERYLOCALE)
657 PERLVARA(I, curlocales, 12, char *)
660 #ifdef USE_LOCALE_COLLATE
662 PERLVAR(I, collation_name, char *) /* Name of current collation */
663 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
664 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
665 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
666 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
667 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
668 /* Assume until proven otherwise that it works */
669 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
670 PERLVARI(I, collation_standard, bool, TRUE)
671 /* Assume simple collation */
672 #endif /* USE_LOCALE_COLLATE */
674 PERLVARI(I, langinfo_buf, char *, NULL)
675 PERLVARI(I, langinfo_bufsize, Size_t, 0)
676 PERLVARI(I, setlocale_buf, char *, NULL)
677 PERLVARI(I, setlocale_bufsize, Size_t, 0)
679 #ifdef PERL_SAWAMPERSAND
680 PERLVAR(I, sawampersand, U8) /* must save all match strings */
683 /* current phase the interpreter is in
684 for ordering this structure to remove holes, we're assuming that this is 4
686 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
688 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
690 PERLVAR(I, unsafe, bool)
691 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
694 =for apidoc Amn|signed char|PL_perl_destruct_level
696 This value may be set when embedding for full cleanup.
706 =item * 2 or greater - full with checks.
710 If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
711 value of C<PL_perl_destruct_level> its value is used instead.
715 /* mod_perl is special, and also assigns a meaning -1 */
716 PERLVARI(I, perl_destruct_level, signed char, 0)
718 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
720 PERLVAR(I, srand_called, bool)
722 #ifdef USE_LOCALE_NUMERIC
724 PERLVARI(I, numeric_underlying, bool, TRUE)
725 /* Assume underlying locale numerics */
726 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
728 PERLVARI(I, numeric_standard, int, TRUE)
729 /* Assume C locale numerics */
730 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
731 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
733 # ifdef HAS_POSIX_2008_LOCALE
735 PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
738 #endif /* !USE_LOCALE_NUMERIC */
740 /* Array of signal handlers, indexed by signal number, through which the C
741 signal handler dispatches. */
742 PERLVAR(I, psig_ptr, SV **)
743 /* Array of names of signals, indexed by signal number, for (re)use as the first
744 argument to a signal handler. Only one block of memory is allocated for
745 both psig_name and psig_ptr. */
746 PERLVAR(I, psig_name, SV **)
748 #if defined(PERL_IMPLICIT_SYS)
749 PERLVAR(I, Mem, struct IPerlMem *)
750 PERLVAR(I, MemShared, struct IPerlMem *)
751 PERLVAR(I, MemParse, struct IPerlMem *)
752 PERLVAR(I, Env, struct IPerlEnv *)
753 PERLVAR(I, StdIO, struct IPerlStdIO *)
754 PERLVAR(I, LIO, struct IPerlLIO *)
755 PERLVAR(I, Dir, struct IPerlDir *)
756 PERLVAR(I, Sock, struct IPerlSock *)
757 PERLVAR(I, Proc, struct IPerlProc *)
760 PERLVAR(I, ptr_table, PTR_TBL_t *)
761 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
763 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
766 #if defined(USE_ITHREADS)
767 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
769 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
770 values in op_pmoffset of pmop.
771 Entry 0 is an SV whose PV is a
772 "packed" list of IVs listing
773 the now-free slots in the array */
774 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
775 PERLVARI(I, stashpadmax, PADOFFSET, 64)
776 PERLVARI(I, stashpadix, PADOFFSET, 0)
779 #ifdef USE_REENTRANT_API
780 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
783 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
784 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
787 PERLVARI(I, perlio, PerlIOl *, NULL)
788 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
789 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
792 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
793 PERLVARI(I, unitcheckav_save, AV *, NULL)
794 /* save UNITCHECK{}s when compiling */
796 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
798 /* Hooks to shared SVs and locks. */
799 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
800 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
802 GCC_DIAG_IGNORE(-Wdeprecated-declarations)
804 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
806 /* This reference ensures that the mathoms are linked with perl */
807 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
809 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
813 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
815 /* Can shared object be destroyed */
816 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
819 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
822 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
824 /* Register of known Method Resolution Orders.
825 What this actually points to is an implementation detail (it may change to
826 a structure incorporating a reference count - use mro_get_from_name to
827 retrieve a C<struct mro_alg *> */
828 PERLVAR(I, registered_mros, HV *)
830 /* Compile-time block start/end hooks */
831 PERLVAR(I, blockhooks, AV *)
833 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
835 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
837 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
838 present always, as -DDEBUGGING must be binary compatible with non. */
839 PERLVARI(I, scopestack_name, const char * *, NULL)
841 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
843 /* Hook for File::Glob */
844 PERLVARI(I, globhook, globhook_t, NULL)
846 /* The last unconditional member of the interpreter structure when 5.18.0 was
847 released. The offset of the end of this is baked into a global variable in
848 any shared perl library which will allow a sanity test in future perl
850 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
852 #ifdef PERL_IMPLICIT_CONTEXT
853 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
854 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
857 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
858 /* For use with the memory debugging code in util.c. This is used only in
859 * DEBUGGING builds (as long as the relevant structure is defined), but
860 * defining it in non-debug builds too means that we retain binary
861 * compatibility between otherwise-compatible plain and debug builds. */
862 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
865 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
866 /* File descriptor to talk to the child which dumps scalars. */
867 PERLVARI(I, dumper_fd, int, -1)
871 #ifdef DEBUG_LEAKING_SCALARS
872 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
875 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
877 #ifdef PERL_TRACE_OPS
878 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
879 If PERL_TRACE_OPS is enabled, we'll dump
880 a summary count of all ops executed in the
881 program at perl_destruct time. For
882 profiling/debugging only. Works only if
883 DEBUGGING is enabled, too. */
886 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
888 PERLVARI(I, dump_re_max_len, STRLEN, 60)
890 /* For internal uses of randomness, this ensures the sequence of
891 * random numbers returned by rand() isn't modified by perl's internal
893 * This is important if the user has called srand() with a seed.
896 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
898 PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
900 PERLVAR(I, AboveLatin1, SV *)
901 PERLVAR(I, Assigned_invlist, SV *)
902 PERLVAR(I, GCB_invlist, SV *)
903 PERLVAR(I, HasMultiCharFold, SV *)
904 PERLVAR(I, InMultiCharFold, SV *)
905 PERLVAR(I, Latin1, SV *)
906 PERLVAR(I, LB_invlist, SV *)
907 PERLVAR(I, SB_invlist, SV *)
908 PERLVAR(I, SCX_invlist, SV *)
909 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
911 /* List of characters that participate in any fold defined by Unicode */
912 PERLVAR(I, in_some_fold, SV *)
914 /* Everything that folds to a given character, for case insensitivity regex
916 PERLVAR(I, utf8_foldclosures, SV *)
918 PERLVAR(I, utf8_idcont, SV *)
919 PERLVAR(I, utf8_idstart, SV *)
920 PERLVAR(I, utf8_perl_idcont, SV *)
921 PERLVAR(I, utf8_perl_idstart, SV *)
922 PERLVAR(I, utf8_xidcont, SV *)
923 PERLVAR(I, utf8_xidstart, SV *)
924 PERLVAR(I, WB_invlist, SV *)
925 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
926 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
927 PERLVAR(I, utf8_toupper, SV *)
928 PERLVAR(I, utf8_totitle, SV *)
929 PERLVAR(I, utf8_tolower, SV *)
930 PERLVAR(I, utf8_tofold, SV *)
931 PERLVAR(I, utf8_tosimplefold, SV *)
932 PERLVAR(I, utf8_charname_begin, SV *)
933 PERLVAR(I, utf8_charname_continue, SV *)
934 PERLVAR(I, utf8_mark, SV *)
935 PERLVARI(I, InBitmap, SV *, NULL)
936 PERLVAR(I, CCC_non0_non230, SV *)
937 PERLVAR(I, Private_Use, SV *)
940 PERLVAR(I, mbrlen_ps, mbstate_t)
943 PERLVAR(I, mbrtowc_ps, mbstate_t)
946 PERLVAR(I, wcrtomb_ps, mbstate_t)
949 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
950 * above on where there are gaps which currently will be structure padding. */
952 /* Within a stable branch, new variables must be added to the very end, before
953 * this comment, for binary compatibility (the offsets of the old members must
955 * (Don't forget to add your variable also to perl_clone()!)