3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 * 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
14 =head1 Per-Interpreter Variables
17 /* These variables are per-interpreter in threaded/multiplicity builds,
20 * Don't forget to re-run regen/embed.pl to propagate changes! */
22 /* New variables must be added to the very end for binary compatibility. */
24 /* Don't forget to add your variable also to perl_clone()! (in sv.c) */
26 /* The 'I' prefix is only needed for vars that need appropriate #defines
27 * generated when built with or without MULTIPLICITY. It is also used
28 * to generate the appropriate export list for win32. If the variable
29 * needs to be initialized, use PERLVARI.
31 * When building without MULTIPLICITY, these variables will be truly global.
33 * Important ones in the first cache line (if alignment is done right) */
35 PERLVAR(I, stack_sp, SV **) /* top of the stack */
36 PERLVAR(I, op, OP *) /* currently executing op */
37 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
39 PERLVAR(I, stack_base, SV **)
40 PERLVAR(I, stack_max, SV **)
42 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
43 LEAVEing scopes we've ENTERed */
44 PERLVAR(I, savestack_ix, I32)
45 PERLVAR(I, savestack_max, I32)
47 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
48 PERLVAR(I, scopestack_ix, I32)
49 PERLVAR(I, scopestack_max, I32)
51 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
52 PERLVARI(I, tmps_ix, SSize_t, -1)
53 PERLVARI(I, tmps_floor, SSize_t, -1)
54 PERLVAR(I, tmps_max, SSize_t)
56 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
58 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
60 PERLVAR(I, markstack_ptr, I32 *)
61 PERLVAR(I, markstack_max, I32 *)
63 #ifdef PERL_HASH_RANDOMIZE_KEYS
64 #ifdef USE_PERL_PERTURB_KEYS
65 PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
67 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
69 PERLVAR(I, strtab, HV *) /* shared string table */
71 /* Fields used by magic variables such as $@, $/ and so on */
72 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
74 PERLVAR(I, tainting, bool) /* doing taint checks */
75 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
76 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
77 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
78 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
81 =for apidoc mn|bool|PL_dowarn
83 The C variable which corresponds to Perl's $^W warning variable.
88 PERLVAR(I, dowarn, U8)
90 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
95 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
100 PERLVAR(I, defstash, HV *) /* main symbol table */
101 PERLVAR(I, curstash, HV *) /* symbol table for current package */
103 PERLVAR(I, curcop, COP *)
104 PERLVAR(I, curstack, AV *) /* THE STACK */
105 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
106 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
109 /* memory management */
110 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
111 PERLVAR(I, sv_objcount, IV) /* DEPRECATED AND UNMAINTAINED.
112 * Will be removed in Perl 5.20.
113 * Used to be: how many objects are currently allocated. */
115 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
116 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
118 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
119 PERLVARI(I, reg_curpm, PMOP*, NULL)
121 /* the currently active slab in a chain of slabs of regmatch states,
122 * and the currently active state within that slab. This stack of states
123 * is shared amongst re-entrant calls to the regex engine */
125 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
126 PERLVAR(I, regmatch_state, regmatch_state *)
128 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
131 =for apidoc Amn|SV|PL_sv_undef
132 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
134 =for apidoc Amn|SV|PL_sv_no
135 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
138 =for apidoc Amn|SV|PL_sv_yes
139 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
145 PERLVAR(I, sv_undef, SV)
146 PERLVAR(I, sv_no, SV)
147 PERLVAR(I, sv_yes, SV)
148 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
150 PERLVAR(I, parser, yy_parser *) /* current parser state */
152 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
156 =for apidoc Amn|STRLEN|PL_na
158 A convenience variable which is typically used with C<SvPV> when one
159 doesn't care about the length of the string. It is usually more efficient
160 to either declare a local variable and use that instead or to use the
166 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
170 PERLVAR(I, statbuf, Stat_t)
171 PERLVAR(I, statcache, Stat_t) /* _ */
172 PERLVAR(I, statgv, GV *)
173 PERLVARI(I, statname, SV *, NULL)
176 PERLVAR(I, timesbuf, struct tms)
180 =for apidoc mn|SV*|PL_rs
182 The input record separator - C<$/> in Perl space.
184 =for apidoc mn|GV*|PL_last_in_gv
186 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
188 =for apidoc mn|GV*|PL_ofsgv
190 The glob containing the output field separator - C<*,> in Perl space.
195 PERLVAR(I, rs, SV *) /* input record separator $/ */
196 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
197 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
198 PERLVAR(I, defoutgv, GV *) /* default FH for output */
199 PERLVARI(I, chopset, const char *, " \n-") /* $: */
200 PERLVAR(I, formtarget, SV *)
201 PERLVAR(I, bodytarget, SV *)
202 PERLVAR(I, toptarget, SV *)
205 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
206 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
208 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
209 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
210 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
212 /* statics "owned" by various functions */
213 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
215 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
218 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
219 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
220 PERLVAR(I, firstgv, GV *) /* $a */
221 PERLVAR(I, secondgv, GV *) /* $b */
224 PERLVAR(I, efloatbuf, char *)
225 PERLVAR(I, efloatsize, STRLEN)
227 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
230 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
232 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
234 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
237 =for apidoc Amn|peep_t|PL_peepp
239 Pointer to the per-subroutine peephole optimiser. This is a function
240 that gets called at the end of compilation of a Perl subroutine (or
241 equivalently independent piece of Perl code) to perform fixups of
242 some ops and to perform small-scale optimisations. The function is
243 called once for each subroutine that is compiled, and is passed, as sole
244 parameter, a pointer to the op that is the entry point to the subroutine.
245 It modifies the op tree in place.
247 The peephole optimiser should never be completely replaced. Rather,
248 add code to it by wrapping the existing optimiser. The basic way to do
249 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
250 If the new code wishes to operate on ops throughout the subroutine's
251 structure, rather than just at the top level, it is likely to be more
252 convenient to wrap the L</PL_rpeepp> hook.
257 PERLVARI(I, peepp, peep_t, Perl_peep)
260 =for apidoc Amn|peep_t|PL_rpeepp
262 Pointer to the recursive peephole optimiser. This is a function
263 that gets called at the end of compilation of a Perl subroutine (or
264 equivalently independent piece of Perl code) to perform fixups of some
265 ops and to perform small-scale optimisations. The function is called
266 once for each chain of ops linked through their C<op_next> fields;
267 it is recursively called to handle each side chain. It is passed, as
268 sole parameter, a pointer to the op that is at the head of the chain.
269 It modifies the op tree in place.
271 The peephole optimiser should never be completely replaced. Rather,
272 add code to it by wrapping the existing optimiser. The basic way to do
273 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
274 If the new code wishes to operate only on ops at a subroutine's top level,
275 rather than throughout the structure, it is likely to be more convenient
276 to wrap the L</PL_peepp> hook.
281 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
284 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
286 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.
287 This allows extensions to free any extra attribute they have locally attached to an OP.
288 It is also assured to first fire for the parent OP and then for its kids.
290 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.
295 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
297 PERLVARI(I, watchaddr, char **, 0)
298 PERLVAR(I, watchok, char *)
300 PERLVAR(I, perldb, U32)
302 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
304 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
306 /* pseudo environmental stuff */
307 PERLVAR(I, origargc, int)
308 PERLVAR(I, origargv, char **)
309 PERLVAR(I, envgv, GV *)
310 PERLVAR(I, incgv, GV *)
311 PERLVAR(I, hintgv, GV *)
312 PERLVAR(I, origfilename, char *)
313 PERLVAR(I, diehook, SV *)
314 PERLVAR(I, warnhook, SV *)
317 PERLVAR(I, patchlevel, SV *)
318 PERLVAR(I, apiversion, SV *)
319 PERLVAR(I, localpatches, const char * const *)
320 PERLVARI(I, splitstr, const char *, " ")
322 PERLVAR(I, minus_c, bool)
323 PERLVAR(I, minus_n, bool)
324 PERLVAR(I, minus_p, bool)
325 PERLVAR(I, minus_l, bool)
326 PERLVAR(I, minus_a, bool)
327 PERLVAR(I, minus_F, bool)
328 PERLVAR(I, doswitches, bool)
329 PERLVAR(I, minus_E, bool)
331 PERLVAR(I, inplace, char *)
332 PERLVAR(I, e_script, SV *)
334 PERLVAR(I, basetime, Time_t) /* $^T */
336 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
337 /* top fd to pass to subprocesses */
338 PERLVAR(I, statusvalue, I32) /* $? */
340 PERLVAR(I, statusvalue_vms, U32)
342 PERLVAR(I, statusvalue_posix, I32)
345 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
346 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
348 /* shortcuts to various I/O objects */
349 PERLVAR(I, stdingv, GV *) /* *STDIN */
350 PERLVAR(I, stderrgv, GV *) /* *STDERR */
351 PERLVAR(I, defgv, GV *)
352 PERLVAR(I, argvgv, GV *) /* *ARGV */
353 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
354 PERLVAR(I, argvout_stack, AV *)
356 /* shortcuts to regexp stuff */
357 PERLVAR(I, replgv, GV *) /* *^R */
359 /* shortcuts to misc objects */
360 PERLVAR(I, errgv, GV *) /* *@ */
362 /* shortcuts to debugging objects */
363 PERLVAR(I, DBgv, GV *) /* *DB::DB */
364 PERLVAR(I, DBline, GV *) /* *DB::line */
367 =for apidoc mn|GV *|PL_DBsub
368 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
369 the SV which holds the name of the sub being debugged. This is the C
370 variable which corresponds to Perl's $DB::sub variable. See
373 =for apidoc mn|SV *|PL_DBsingle
374 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
375 boolean which indicates whether subs are being single-stepped.
376 Single-stepping is automatically turned on after every step. This is the C
377 variable which corresponds to Perl's $DB::single variable. See
380 =for apidoc mn|SV *|PL_DBtrace
381 Trace variable used when Perl is run in debugging mode, with the B<-d>
382 switch. This is the C variable which corresponds to Perl's $DB::trace
383 variable. See C<PL_DBsingle>.
388 PERLVAR(I, DBsub, GV *) /* *DB::sub */
389 PERLVAR(I, DBsingle, SV *) /* $DB::single */
390 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
391 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
392 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
395 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
396 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
397 PERLVAR(I, curstname, SV *) /* name of current package */
398 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
399 PERLVAR(I, endav, AV *) /* names of END subroutines */
400 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
401 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
402 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
404 /* subprocess state */
405 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
408 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
410 /* current interpreter roots */
411 PERLVAR(I, main_cv, CV *)
412 PERLVAR(I, main_root, OP *)
413 PERLVAR(I, main_start, OP *)
414 PERLVAR(I, eval_root, OP *)
415 PERLVAR(I, eval_start, OP *)
417 /* runtime control stuff */
418 PERLVARI(I, curcopdb, COP *, NULL)
420 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
421 PERLVAR(I, lastfd, int) /* what to preserve mode on */
422 PERLVAR(I, oldname, char *) /* what to preserve mode on */
423 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
424 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
425 /* Elements in this array have ';' appended and are injected as a single line
426 into the tokeniser. You can't put any (literal) newlines into any program
427 you stuff in into this array, as the point where it's injected is expecting
428 a single physical line. */
429 PERLVAR(I, preambleav, AV *)
430 PERLVAR(I, mess_sv, SV *)
431 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
433 /* funky return mechanisms */
434 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
436 /* statics moved here for shared library purposes */
437 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
438 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
439 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
440 PERLVARI(I, laststype, U16, OP_STAT)
442 PERLVARI(I, laststatval, int, -1)
444 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
447 /* interpreter atexit processing */
448 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
449 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
450 /* list of exit functions */
453 =for apidoc Amn|HV*|PL_modglobal
455 C<PL_modglobal> is a general purpose, interpreter global HV for use by
456 extensions that need to keep information on a per-interpreter basis.
457 In a pinch, it can also be used as a symbol table for extensions
458 to share data among each other. It is a good idea to use keys
459 prefixed by the package name of the extension that owns the data.
464 PERLVAR(I, modglobal, HV *) /* per-interp module data */
466 /* these used to be in global before 5.004_68 */
467 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
469 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
471 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
472 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
473 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
474 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
476 #ifdef HAVE_INTERP_INTERN
477 PERLVAR(I, sys_intern, struct interp_intern)
478 /* platform internals */
481 /* more statics moved here */
482 PERLVAR(I, DBcv, CV *) /* from perl.c */
483 PERLVARI(I, generation, int, 100) /* from op.c */
485 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
487 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
488 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
489 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
490 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
493 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
494 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
495 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
496 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
497 PERLVARI(I, an, U32, 0) /* malloc sequence number */
499 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
500 PERLVARI(I, breakable_sub_gen, U32, 0)
503 /* exercise wrap-around */
504 #define PERL_COP_SEQMAX (U32_MAX-50)
506 #define PERL_COP_SEQMAX 0
508 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
509 #undef PERL_COP_SEQMAX
511 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
512 PERLVAR(I, origalen, U32)
513 PERLVAR(I, origenviron, char **)
514 #ifdef PERL_USES_PL_PIDSTATUS
515 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
517 PERLVAR(I, osname, char *) /* operating system */
519 PERLVAR(I, sighandlerp, Sighandler_t)
521 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
523 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
525 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
527 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
529 PERLVAR(I, subname, SV *) /* name of current subroutine */
531 PERLVAR(I, subline, I32) /* line this subroutine began on */
532 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
534 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
535 PERLVAR(I, padix, I32) /* max used index in current "register" pad */
537 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
539 #ifdef USE_LOCALE_COLLATE
540 PERLVAR(I, collation_name, char *) /* Name of current collation */
541 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
542 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
543 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
544 PERLVARI(I, collation_standard, bool, TRUE)
545 /* Assume simple collation */
546 #endif /* USE_LOCALE_COLLATE */
548 #ifdef PERL_SAWAMPERSAND
549 PERLVAR(I, sawampersand, U8) /* must save all match strings */
552 PERLVAR(I, unsafe, bool)
553 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
555 /* current phase the interpreter is in
556 for ordering this structure to remove holes, we're assuming that this is 4
558 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
560 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
562 /* This value may be set when embedding for full cleanup */
563 /* 0=none, 1=full, 2=full with checks */
564 /* mod_perl is special, and also assigns a meaning -1 */
565 PERLVARI(I, perl_destruct_level, signed char, 0)
567 #ifdef USE_LOCALE_NUMERIC
569 PERLVARI(I, numeric_standard, bool, TRUE)
570 /* Assume simple numerics */
571 PERLVARI(I, numeric_local, bool, TRUE)
572 /* Assume local numerics */
573 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
574 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
576 #endif /* !USE_LOCALE_NUMERIC */
578 /* Unicode inversion lists */
579 PERLVAR(I, Latin1, SV *)
580 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
581 PERLVAR(I, AboveLatin1, SV *)
583 PERLVAR(I, NonL1NonFinalFold, SV *)
584 PERLVAR(I, HasMultiCharFold, SV *)
586 /* utf8 character class swashes */
587 PERLVAR(I, utf8_mark, SV *)
588 PERLVAR(I, utf8_X_regular_begin, SV *)
589 PERLVAR(I, utf8_X_extend, SV *)
590 PERLVAR(I, utf8_toupper, SV *)
591 PERLVAR(I, utf8_totitle, SV *)
592 PERLVAR(I, utf8_tolower, SV *)
593 PERLVAR(I, utf8_tofold, SV *)
594 PERLVAR(I, utf8_charname_begin, SV *)
595 PERLVAR(I, utf8_charname_continue, SV *)
597 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
598 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
599 PERLVARA(I, L1Posix_ptrs, POSIX_CC_COUNT, SV *)
600 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
602 PERLVAR(I, last_swash_hv, HV *)
603 PERLVAR(I, last_swash_tmps, U8 *)
604 PERLVAR(I, last_swash_slen, STRLEN)
605 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
606 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
609 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
611 /* One byte hole in the interpreter structure. */
614 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
615 PERLVAR(I, srand_called, bool)
617 /* Array of signal handlers, indexed by signal number, through which the C
618 signal handler dispatches. */
619 PERLVAR(I, psig_ptr, SV **)
620 /* Array of names of signals, indexed by signal number, for (re)use as the first
621 argument to a signal handler. Only one block of memory is allocated for
622 both psig_name and psig_ptr. */
623 PERLVAR(I, psig_name, SV **)
625 #if defined(PERL_IMPLICIT_SYS)
626 PERLVAR(I, Mem, struct IPerlMem *)
627 PERLVAR(I, MemShared, struct IPerlMem *)
628 PERLVAR(I, MemParse, struct IPerlMem *)
629 PERLVAR(I, Env, struct IPerlEnv *)
630 PERLVAR(I, StdIO, struct IPerlStdIO *)
631 PERLVAR(I, LIO, struct IPerlLIO *)
632 PERLVAR(I, Dir, struct IPerlDir *)
633 PERLVAR(I, Sock, struct IPerlSock *)
634 PERLVAR(I, Proc, struct IPerlProc *)
637 PERLVAR(I, ptr_table, PTR_TBL_t *)
638 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
640 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
643 #if defined(USE_ITHREADS)
644 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
646 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
647 values in op_pmoffset of pmop.
648 Entry 0 is an SV whose PV is a
649 "packed" list of IVs listing
650 the now-free slots in the array */
651 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
652 PERLVARI(I, stashpadmax, PADOFFSET, 64)
653 PERLVARI(I, stashpadix, PADOFFSET, 0)
656 #ifdef USE_REENTRANT_API
657 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
660 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
661 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
664 PERLVARI(I, perlio, PerlIOl *, NULL)
665 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
666 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
669 PERLVARI(I, encoding, SV *, NULL) /* character encoding */
671 PERLVAR(I, utf8_idstart, SV *)
672 PERLVAR(I, utf8_idcont, SV *)
673 PERLVAR(I, utf8_xidstart, SV *)
674 PERLVAR(I, utf8_perl_idstart, SV *)
675 PERLVAR(I, utf8_perl_idcont, SV *)
676 PERLVAR(I, utf8_xidcont, SV *)
678 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
680 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
681 PERLVARI(I, unitcheckav_save, AV *, NULL)
682 /* save UNITCHECK{}s when compiling */
684 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
686 /* Hooks to shared SVs and locks. */
687 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
688 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
690 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
692 /* This reference ensures that the mathoms are linked with perl */
693 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
695 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
697 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
699 /* Can shared object be destroyed */
700 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
703 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
706 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
708 /* Register of known Method Resolution Orders.
709 What this actually points to is an implementation detail (it may change to
710 a structure incorporating a reference count - use mro_get_from_name to
711 retrieve a C<struct mro_alg *> */
712 PERLVAR(I, registered_mros, HV *)
714 /* Compile-time block start/end hooks */
715 PERLVAR(I, blockhooks, AV *)
717 /* Everything that folds to a given character, for case insensitivity regex
719 PERLVARI(I, utf8_foldclosures, HV *, NULL)
721 /* List of characters that participate in folds (except marks, etc in
722 * multi-char folds) */
723 PERLVARI(I, utf8_foldable, SV *, NULL)
725 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
727 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
729 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
730 present always, as -DDEBUGGING must be binary compatible with non. */
731 PERLVARI(I, scopestack_name, const char * *, NULL)
733 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
735 /* Hook for File::Glob */
736 PERLVARI(I, globhook, globhook_t, NULL)
738 /* The last unconditional member of the interpreter structure when 5.19.5 was
739 released. The offset of the end of this is baked into a global variable in
740 any shared perl library which will allow a sanity test in future perl
742 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
744 #ifdef PERL_IMPLICIT_CONTEXT
745 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
746 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
747 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
748 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
752 #ifdef PERL_TRACK_MEMPOOL
753 /* For use with the memory debugging code in util.c */
754 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
757 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
758 /* File descriptor to talk to the child which dumps scalars. */
759 PERLVARI(I, dumper_fd, int, -1)
763 PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
764 /* (MAD = Misc Attribute Decoration) */
765 PERLVARI(I, xmlfp, PerlIO *, NULL)
768 #ifdef DEBUG_LEAKING_SCALARS
769 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
772 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
774 #ifdef PERL_TRACE_OPS
775 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
776 If PERL_TRACE_OPS is enabled, we'll dump
777 a summary count of all ops executed in the
778 program at perl_destruct time. For
779 profiling/debugging only. Works only if
780 DEBUGGING is enabled, too. */
783 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
785 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
786 * above on where there are gaps which currently will be structure padding. */
788 /* Within a stable branch, new variables must be added to the very end, before
789 * this comment, for binary compatibility (the offsets of the old members must
791 * (Don't forget to add your variable also to perl_clone()!)
792 * XSUB.h provides wrapper functions via perlapi.h that make this
793 * irrelevant, but not all code may be expected to #include XSUB.h.