3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 * 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
14 =head1 Per-Interpreter Variables
17 /* These variables are per-interpreter in threaded/multiplicity builds,
20 * Don't forget to re-run regen/embed.pl to propagate changes! */
22 /* New variables must be added to the very end for binary compatibility. */
24 /* Don't forget to add your variable also to perl_clone()! (in sv.c) */
26 /* The 'I' prefix is only needed for vars that need appropriate #defines
27 * generated when built with or without MULTIPLICITY. It is also used
28 * to generate the appropriate export list for win32. If the variable
29 * needs to be initialized, use PERLVARI.
31 * When building without MULTIPLICITY, these variables will be truly global.
33 * Important ones in the first cache line (if alignment is done right) */
35 PERLVAR(I, stack_sp, SV **) /* top of the stack */
37 PERLVAR(I, opsave, OP *)
39 PERLVAR(I, op, OP *) /* currently executing op */
41 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
43 PERLVAR(I, stack_base, SV **)
44 PERLVAR(I, stack_max, SV **)
46 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
47 LEAVEing scopes we've ENTERed */
48 PERLVAR(I, savestack_ix, I32)
49 PERLVAR(I, savestack_max, I32)
51 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
52 PERLVAR(I, scopestack_ix, I32)
53 PERLVAR(I, scopestack_max, I32)
55 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
56 PERLVARI(I, tmps_ix, I32, -1)
57 PERLVARI(I, tmps_floor, I32, -1)
58 PERLVAR(I, tmps_max, I32)
60 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
62 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
64 PERLVAR(I, markstack_ptr, I32 *)
65 PERLVAR(I, markstack_max, I32 *)
67 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
68 PERLVAR(I, strtab, HV *) /* shared string table */
70 /* Fields used by magic variables such as $@, $/ and so on */
71 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
73 PERLVAR(I, tainting, bool) /* doing taint checks */
74 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
75 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
76 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
77 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
80 =for apidoc mn|bool|PL_dowarn
82 The C variable which corresponds to Perl's $^W warning variable.
87 PERLVAR(I, dowarn, U8)
89 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
94 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
99 PERLVAR(I, defstash, HV *) /* main symbol table */
100 PERLVAR(I, curstash, HV *) /* symbol table for current package */
102 PERLVAR(I, curcop, COP *)
103 PERLVAR(I, curstack, AV *) /* THE STACK */
104 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
105 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
108 /* memory management */
109 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
110 PERLVAR(I, sv_objcount, IV) /* DEPRECATED AND UNMAINTAINED.
111 * Will be removed in Perl 5.20.
112 * Used to be: how many objects are currently allocated. */
114 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
115 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
117 PERLVAR(I, reg_state, struct re_save_state)
119 /* the currently active slab in a chain of slabs of regmatch states,
120 * and the currently active state within that slab */
122 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
123 PERLVAR(I, regmatch_state, regmatch_state *)
125 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
128 =for apidoc Amn|SV|PL_sv_undef
129 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
131 =for apidoc Amn|SV|PL_sv_no
132 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
135 =for apidoc Amn|SV|PL_sv_yes
136 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
142 PERLVAR(I, sv_undef, SV)
143 PERLVAR(I, sv_no, SV)
144 PERLVAR(I, sv_yes, SV)
145 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
147 PERLVAR(I, parser, yy_parser *) /* current parser state */
149 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
153 =for apidoc Amn|STRLEN|PL_na
155 A convenience variable which is typically used with C<SvPV> when one
156 doesn't care about the length of the string. It is usually more efficient
157 to either declare a local variable and use that instead or to use the
163 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
167 PERLVAR(I, statbuf, Stat_t)
168 PERLVAR(I, statcache, Stat_t) /* _ */
169 PERLVAR(I, statgv, GV *)
170 PERLVARI(I, statname, SV *, NULL)
173 PERLVAR(I, timesbuf, struct tms)
177 =for apidoc mn|SV*|PL_rs
179 The input record separator - C<$/> in Perl space.
181 =for apidoc mn|GV*|PL_last_in_gv
183 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
185 =for apidoc mn|GV*|PL_ofsgv
187 The glob containing the output field separator - C<*,> in Perl space.
192 PERLVAR(I, rs, SV *) /* input record separator $/ */
193 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
194 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
195 PERLVAR(I, defoutgv, GV *) /* default FH for output */
196 PERLVARI(I, chopset, const char *, " \n-") /* $: */
197 PERLVAR(I, formtarget, SV *)
198 PERLVAR(I, bodytarget, SV *)
199 PERLVAR(I, toptarget, SV *)
202 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
203 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
205 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
206 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
207 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
209 /* statics "owned" by various functions */
210 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
212 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
215 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
216 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
217 PERLVAR(I, firstgv, GV *) /* $a */
218 PERLVAR(I, secondgv, GV *) /* $b */
221 PERLVAR(I, efloatbuf, char *)
222 PERLVAR(I, efloatsize, STRLEN)
224 PERLVAR(I, regdummy, regnode) /* from regcomp.c */
226 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
229 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
231 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
233 PERLVARA(I, colors,6, char *) /* from regcomp.c */
236 =for apidoc Amn|peep_t|PL_peepp
238 Pointer to the per-subroutine peephole optimiser. This is a function
239 that gets called at the end of compilation of a Perl subroutine (or
240 equivalently independent piece of Perl code) to perform fixups of
241 some ops and to perform small-scale optimisations. The function is
242 called once for each subroutine that is compiled, and is passed, as sole
243 parameter, a pointer to the op that is the entry point to the subroutine.
244 It modifies the op tree in place.
246 The peephole optimiser should never be completely replaced. Rather,
247 add code to it by wrapping the existing optimiser. The basic way to do
248 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
249 If the new code wishes to operate on ops throughout the subroutine's
250 structure, rather than just at the top level, it is likely to be more
251 convenient to wrap the L</PL_rpeepp> hook.
256 PERLVARI(I, peepp, peep_t, Perl_peep)
259 =for apidoc Amn|peep_t|PL_rpeepp
261 Pointer to the recursive peephole optimiser. This is a function
262 that gets called at the end of compilation of a Perl subroutine (or
263 equivalently independent piece of Perl code) to perform fixups of some
264 ops and to perform small-scale optimisations. The function is called
265 once for each chain of ops linked through their C<op_next> fields;
266 it is recursively called to handle each side chain. It is passed, as
267 sole parameter, a pointer to the op that is at the head of the chain.
268 It modifies the op tree in place.
270 The peephole optimiser should never be completely replaced. Rather,
271 add code to it by wrapping the existing optimiser. The basic way to do
272 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
273 If the new code wishes to operate only on ops at a subroutine's top level,
274 rather than throughout the structure, it is likely to be more convenient
275 to wrap the L</PL_peepp> hook.
280 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
283 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
285 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.
286 This allows extensions to free any extra attribute they have locally attached to an OP.
287 It is also assured to first fire for the parent OP and then for its kids.
289 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.
294 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
296 PERLVARI(I, watchaddr, char **, 0)
297 PERLVAR(I, watchok, char *)
299 PERLVAR(I, perldb, U32)
301 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
303 /* pseudo environmental stuff */
304 PERLVAR(I, origargc, int)
305 PERLVAR(I, origargv, char **)
306 PERLVAR(I, envgv, GV *)
307 PERLVAR(I, incgv, GV *)
308 PERLVAR(I, hintgv, GV *)
309 PERLVAR(I, origfilename, char *)
310 PERLVAR(I, diehook, SV *)
311 PERLVAR(I, warnhook, SV *)
314 PERLVAR(I, patchlevel, SV *)
315 PERLVAR(I, apiversion, SV *)
316 PERLVAR(I, localpatches, const char * const *)
317 PERLVARI(I, splitstr, const char *, " ")
319 PERLVAR(I, minus_c, bool)
320 PERLVAR(I, minus_n, bool)
321 PERLVAR(I, minus_p, bool)
322 PERLVAR(I, minus_l, bool)
323 PERLVAR(I, minus_a, bool)
324 PERLVAR(I, minus_F, bool)
325 PERLVAR(I, doswitches, bool)
326 PERLVAR(I, minus_E, bool)
328 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
330 PERLVAR(I, inplace, char *)
331 PERLVAR(I, e_script, SV *)
333 PERLVAR(I, basetime, Time_t) /* $^T */
335 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
336 /* top fd to pass to subprocesses */
337 PERLVAR(I, statusvalue, I32) /* $? */
339 PERLVAR(I, statusvalue_vms, U32)
341 PERLVAR(I, statusvalue_posix, I32)
344 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
345 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
347 /* shortcuts to various I/O objects */
348 PERLVAR(I, stdingv, GV *) /* *STDIN */
349 PERLVAR(I, stderrgv, GV *) /* *STDERR */
350 PERLVAR(I, defgv, GV *)
351 PERLVAR(I, argvgv, GV *) /* *ARGV */
352 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
353 PERLVAR(I, argvout_stack, AV *)
355 /* shortcuts to regexp stuff */
356 PERLVAR(I, replgv, GV *) /* *^R */
358 /* shortcuts to misc objects */
359 PERLVAR(I, errgv, GV *) /* *@ */
361 /* shortcuts to debugging objects */
362 PERLVAR(I, DBgv, GV *) /* *DB::DB */
363 PERLVAR(I, DBline, GV *) /* *DB::line */
366 =for apidoc mn|GV *|PL_DBsub
367 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
368 the SV which holds the name of the sub being debugged. This is the C
369 variable which corresponds to Perl's $DB::sub variable. See
372 =for apidoc mn|SV *|PL_DBsingle
373 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
374 boolean which indicates whether subs are being single-stepped.
375 Single-stepping is automatically turned on after every step. This is the C
376 variable which corresponds to Perl's $DB::single variable. See
379 =for apidoc mn|SV *|PL_DBtrace
380 Trace variable used when Perl is run in debugging mode, with the B<-d>
381 switch. This is the C variable which corresponds to Perl's $DB::trace
382 variable. See C<PL_DBsingle>.
387 PERLVAR(I, DBsub, GV *) /* *DB::sub */
388 PERLVAR(I, DBsingle, SV *) /* $DB::single */
389 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
390 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
391 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
394 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
395 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
396 PERLVAR(I, curstname, SV *) /* name of current package */
397 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
398 PERLVAR(I, endav, AV *) /* names of END subroutines */
399 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
400 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
401 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
403 /* funky return mechanisms */
404 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
406 /* subprocess state */
407 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
410 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
412 /* current interpreter roots */
413 PERLVAR(I, main_cv, CV *)
414 PERLVAR(I, main_root, OP *)
415 PERLVAR(I, main_start, OP *)
416 PERLVAR(I, eval_root, OP *)
417 PERLVAR(I, eval_start, OP *)
419 /* runtime control stuff */
420 PERLVARI(I, curcopdb, COP *, NULL)
422 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
423 PERLVAR(I, lastfd, int) /* what to preserve mode on */
424 PERLVAR(I, oldname, char *) /* what to preserve mode on */
425 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
426 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
427 /* Elements in this array have ';' appended and are injected as a single line
428 into the tokeniser. You can't put any (literal) newlines into any program
429 you stuff in into this array, as the point where it's injected is expecting
430 a single physical line. */
431 PERLVAR(I, preambleav, AV *)
432 PERLVAR(I, mess_sv, SV *)
433 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
435 /* statics moved here for shared library purposes */
436 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
437 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
438 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
439 PERLVARI(I, laststype, U16, OP_STAT)
441 PERLVARI(I, laststatval, int, -1)
443 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
446 /* interpreter atexit processing */
447 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
448 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
449 /* list of exit functions */
452 =for apidoc Amn|HV*|PL_modglobal
454 C<PL_modglobal> is a general purpose, interpreter global HV for use by
455 extensions that need to keep information on a per-interpreter basis.
456 In a pinch, it can also be used as a symbol table for extensions
457 to share data among each other. It is a good idea to use keys
458 prefixed by the package name of the extension that owns the data.
463 PERLVAR(I, modglobal, HV *) /* per-interp module data */
465 /* these used to be in global before 5.004_68 */
466 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
468 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
470 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
471 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
472 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
473 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
475 #ifdef HAVE_INTERP_INTERN
476 PERLVAR(I, sys_intern, struct interp_intern)
477 /* platform internals */
480 /* more statics moved here */
481 PERLVAR(I, DBcv, CV *) /* from perl.c */
482 PERLVARI(I, generation, int, 100) /* from op.c */
484 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
486 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
487 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
488 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
489 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
492 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
493 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
494 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
495 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
496 PERLVARI(I, an, U32, 0) /* malloc sequence number */
499 /* exercise wrap-around */
500 #define PERL_COP_SEQMAX (U32_MAX-50)
502 #define PERL_COP_SEQMAX 0
504 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
505 #undef PERL_COP_SEQMAX
507 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
508 PERLVAR(I, origalen, U32)
509 PERLVAR(I, origenviron, char **)
510 #ifdef PERL_USES_PL_PIDSTATUS
511 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
513 PERLVAR(I, osname, char *) /* operating system */
515 PERLVAR(I, sighandlerp, Sighandler_t)
517 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
519 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
521 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
523 PERLVAR(I, subname, SV *) /* name of current subroutine */
525 PERLVAR(I, subline, I32) /* line this subroutine began on */
526 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
528 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
529 PERLVAR(I, padix, I32) /* max used index in current "register" pad */
531 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
533 PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
535 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
537 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
538 PERLVARI(I, breakable_sub_gen, U32, 0)
540 #ifdef USE_LOCALE_COLLATE
541 PERLVAR(I, collation_name, char *) /* Name of current collation */
542 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
543 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
544 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
545 PERLVARI(I, collation_standard, bool, TRUE)
546 /* Assume simple collation */
547 #endif /* USE_LOCALE_COLLATE */
549 #ifdef PERL_SAWAMPERSAND
550 PERLVAR(I, sawampersand, U8) /* must save all match strings */
553 PERLVAR(I, unsafe, bool)
554 PERLVAR(I, colorset, bool) /* from regcomp.c */
556 /* SPARE 2/3 bytes depending on PERL_SAWAMPERSAND */
558 #ifdef USE_LOCALE_NUMERIC
560 PERLVARI(I, numeric_standard, bool, TRUE)
561 /* Assume simple numerics */
562 PERLVARI(I, numeric_local, bool, TRUE)
563 /* Assume local numerics */
564 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
565 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
567 #endif /* !USE_LOCALE_NUMERIC */
569 /* Unicode inversion lists */
570 PERLVAR(I, ASCII, SV *)
571 PERLVAR(I, Latin1, SV *)
572 PERLVAR(I, AboveLatin1, SV *)
574 PERLVAR(I, NonL1NonFinalFold, SV *)
575 PERLVAR(I, HasMultiCharFold, SV *)
577 /* utf8 character class swashes */
578 PERLVAR(I, utf8_mark, SV *)
579 PERLVAR(I, utf8_X_regular_begin, SV *)
580 PERLVAR(I, utf8_X_extend, SV *)
581 PERLVAR(I, utf8_toupper, SV *)
582 PERLVAR(I, utf8_totitle, SV *)
583 PERLVAR(I, utf8_tolower, SV *)
584 PERLVAR(I, utf8_tofold, SV *)
585 PERLVAR(I, utf8_charname_begin, SV *)
586 PERLVAR(I, utf8_charname_continue, SV *)
588 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
589 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
590 PERLVARA(I, L1Posix_ptrs, POSIX_CC_COUNT, SV *)
591 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
593 PERLVAR(I, last_swash_hv, HV *)
594 PERLVAR(I, last_swash_tmps, U8 *)
595 PERLVAR(I, last_swash_slen, STRLEN)
596 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
597 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
600 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
603 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
604 PERLVAR(I, srand_called, bool)
605 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
607 /* This value may be set when embedding for full cleanup */
608 /* 0=none, 1=full, 2=full with checks */
609 /* mod_perl is special, and also assigns a meaning -1 */
610 PERLVARI(I, perl_destruct_level, signed char, 0)
612 /* current phase the interpreter is in */
613 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
615 /* Array of signal handlers, indexed by signal number, through which the C
616 signal handler dispatches. */
617 PERLVAR(I, psig_ptr, SV **)
618 /* Array of names of signals, indexed by signal number, for (re)use as the first
619 argument to a signal handler. Only one block of memory is allocated for
620 both psig_name and psig_ptr. */
621 PERLVAR(I, psig_name, SV **)
623 #if defined(PERL_IMPLICIT_SYS)
624 PERLVAR(I, Mem, struct IPerlMem *)
625 PERLVAR(I, MemShared, struct IPerlMem *)
626 PERLVAR(I, MemParse, struct IPerlMem *)
627 PERLVAR(I, Env, struct IPerlEnv *)
628 PERLVAR(I, StdIO, struct IPerlStdIO *)
629 PERLVAR(I, LIO, struct IPerlLIO *)
630 PERLVAR(I, Dir, struct IPerlDir *)
631 PERLVAR(I, Sock, struct IPerlSock *)
632 PERLVAR(I, Proc, struct IPerlProc *)
635 PERLVAR(I, ptr_table, PTR_TBL_t *)
636 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
638 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
641 #if defined(USE_ITHREADS)
642 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
644 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
645 values in op_pmoffset of pmop.
646 Entry 0 is an SV whose PV is a
647 "packed" list of IVs listing
648 the now-free slots in the array */
649 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
650 PERLVARI(I, stashpadmax, PADOFFSET, 64)
651 PERLVARI(I, stashpadix, PADOFFSET, 0)
654 #ifdef USE_REENTRANT_API
655 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
658 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
659 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
662 PERLVARI(I, perlio, PerlIOl *, NULL)
663 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
664 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
667 PERLVARI(I, encoding, SV *, NULL) /* character encoding */
669 PERLVAR(I, utf8_idstart, SV *)
670 PERLVAR(I, utf8_idcont, SV *)
671 PERLVAR(I, utf8_xidstart, SV *)
672 PERLVAR(I, utf8_perl_idstart, SV *)
673 PERLVAR(I, utf8_perl_idcont, SV *)
674 PERLVAR(I, utf8_xidcont, SV *)
676 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
678 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
679 PERLVARI(I, unitcheckav_save, AV *, NULL)
680 /* save UNITCHECK{}s when compiling */
682 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
684 /* Hooks to shared SVs and locks. */
685 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
686 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
688 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
690 /* This reference ensures that the mathoms are linked with perl */
691 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
693 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
695 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
697 /* Can shared object be destroyed */
698 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
701 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
704 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
706 /* Register of known Method Resolution Orders.
707 What this actually points to is an implementation detail (it may change to
708 a structure incorporating a reference count - use mro_get_from_name to
709 retrieve a C<struct mro_alg *> */
710 PERLVAR(I, registered_mros, HV *)
712 /* Compile-time block start/end hooks */
713 PERLVAR(I, blockhooks, AV *)
715 /* Everything that folds to a given character, for case insensitivity regex
717 PERLVARI(I, utf8_foldclosures, HV *, NULL)
719 /* List of characters that participate in folds (except marks, etc in
720 * multi-char folds) */
721 PERLVARI(I, utf8_foldable, SV *, NULL)
723 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
725 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
727 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
728 present always, as -DDEBUGGING must be binary compatible with non. */
729 PERLVARI(I, scopestack_name, const char * *, NULL)
731 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
733 /* Hook for File::Glob */
734 PERLVARI(I, globhook, globhook_t, NULL)
736 /* The last unconditional member of the interpreter structure when 5.18.0 was
737 released. The offset of the end of this is baked into a global variable in
738 any shared perl library which will allow a sanity test in future perl
740 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
742 #ifdef PERL_IMPLICIT_CONTEXT
743 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
744 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
745 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
746 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
750 #ifdef PERL_TRACK_MEMPOOL
751 /* For use with the memory debugging code in util.c */
752 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
755 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
756 /* File descriptor to talk to the child which dumps scalars. */
757 PERLVARI(I, dumper_fd, int, -1)
761 PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
762 /* (MAD = Misc Attribute Decoration) */
763 PERLVARI(I, xmlfp, PerlIO *, NULL)
766 #ifdef DEBUG_LEAKING_SCALARS
767 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
770 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
771 * above on where there are gaps which currently will be structure padding. */
773 /* Within a stable branch, new variables must be added to the very end, before
774 * this comment, for binary compatibility (the offsets of the old members must
776 * (Don't forget to add your variable also to perl_clone()!)
777 * XSUB.h provides wrapper functions via perlapi.h that make this
778 * irrelevant, but not all code may be expected to #include XSUB.h.