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) /* first unalloced slot in tmps stack */
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 */
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 $< */
81 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
94 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
96 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
97 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
98 PERLVAR(I, defgv, GV *) /* the *_ glob */
101 =for apidoc mn|U8|PL_dowarn
103 The C variable that roughly corresponds to Perl's C<$^W> warning variable.
104 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
105 collection of flag bits.
110 PERLVAR(I, dowarn, U8)
112 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
117 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
122 PERLVAR(I, defstash, HV *) /* main symbol table */
123 PERLVAR(I, curstash, HV *) /* symbol table for current package */
125 PERLVAR(I, curcop, COP *)
126 PERLVAR(I, curstack, AV *) /* THE STACK */
127 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
128 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
131 /* memory management */
132 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
134 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
135 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
137 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
138 PERLVARI(I, reg_curpm, PMOP*, NULL)
140 /* the currently active slab in a chain of slabs of regmatch states,
141 * and the currently active state within that slab. This stack of states
142 * is shared amongst re-entrant calls to the regex engine */
144 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
145 PERLVAR(I, regmatch_state, regmatch_state *)
147 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
150 =for apidoc Amn|SV|PL_sv_undef
151 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
153 =for apidoc Amn|SV|PL_sv_no
154 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
157 =for apidoc Amn|SV|PL_sv_yes
158 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
161 =for apidoc Amn|SV|PL_sv_zero
162 This readonly SV has a zero numeric value and a C<"0"> string value. It's
163 similar to C<L</PL_sv_no>> except for its string value. Can be used as a
164 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
165 C<&PL_sv_zero>. Introduced in 5.28.
171 PERLVAR(I, sv_yes, SV)
172 PERLVAR(I, sv_undef, SV)
173 PERLVAR(I, sv_no, SV)
174 PERLVAR(I, sv_zero, SV)
176 /* store the immortals as an array to ensure they are contiguous in
177 * memory: makes SvIMMORTAL_INTERP(sv) possible */
178 PERLVARA(I, sv_immortals, 4, SV)
181 PERLVAR(I, padname_undef, PADNAME)
182 PERLVAR(I, padname_const, PADNAME)
183 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
185 PERLVAR(I, parser, yy_parser *) /* current parser state */
187 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
191 =for apidoc Amn|STRLEN|PL_na
193 A convenience variable which is typically used with C<SvPV> when one
194 doesn't care about the length of the string. It is usually more efficient
195 to either declare a local variable and use that instead or to use the
201 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
205 PERLVAR(I, statcache, Stat_t) /* _ */
206 PERLVAR(I, statgv, GV *)
207 PERLVARI(I, statname, SV *, NULL)
210 =for apidoc mn|SV*|PL_rs
212 The input record separator - C<$/> in Perl space.
214 =for apidoc mn|GV*|PL_last_in_gv
216 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
218 =for apidoc mn|GV*|PL_ofsgv
220 The glob containing the output field separator - C<*,> in Perl space.
225 PERLVAR(I, rs, SV *) /* input record separator $/ */
226 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
227 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
228 PERLVAR(I, defoutgv, GV *) /* default FH for output */
229 PERLVARI(I, chopset, const char *, " \n-") /* $: */
230 PERLVAR(I, formtarget, SV *)
231 PERLVAR(I, bodytarget, SV *)
232 PERLVAR(I, toptarget, SV *)
235 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
236 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
238 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
239 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
240 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
242 /* statics "owned" by various functions */
243 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
245 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
248 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
249 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
250 PERLVAR(I, firstgv, GV *) /* $a */
251 PERLVAR(I, secondgv, GV *) /* $b */
254 PERLVAR(I, efloatbuf, char *)
255 PERLVAR(I, efloatsize, STRLEN)
257 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
260 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
262 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
263 PERLVAR(I, in_utf8_CTYPE_locale, bool)
264 PERLVAR(I, in_utf8_COLLATE_locale, bool)
265 PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
266 PERLVARA(I, locale_utf8ness, 256, char)
268 #ifdef USE_LOCALE_CTYPE
269 PERLVAR(I, warn_locale, SV *)
272 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
275 =for apidoc Amn|peep_t|PL_peepp
277 Pointer to the per-subroutine peephole optimiser. This is a function
278 that gets called at the end of compilation of a Perl subroutine (or
279 equivalently independent piece of Perl code) to perform fixups of
280 some ops and to perform small-scale optimisations. The function is
281 called once for each subroutine that is compiled, and is passed, as sole
282 parameter, a pointer to the op that is the entry point to the subroutine.
283 It modifies the op tree in place.
285 The peephole optimiser should never be completely replaced. Rather,
286 add code to it by wrapping the existing optimiser. The basic way to do
287 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
288 If the new code wishes to operate on ops throughout the subroutine's
289 structure, rather than just at the top level, it is likely to be more
290 convenient to wrap the L</PL_rpeepp> hook.
295 PERLVARI(I, peepp, peep_t, Perl_peep)
298 =for apidoc Amn|peep_t|PL_rpeepp
300 Pointer to the recursive peephole optimiser. This is a function
301 that gets called at the end of compilation of a Perl subroutine (or
302 equivalently independent piece of Perl code) to perform fixups of some
303 ops and to perform small-scale optimisations. The function is called
304 once for each chain of ops linked through their C<op_next> fields;
305 it is recursively called to handle each side chain. It is passed, as
306 sole parameter, a pointer to the op that is at the head of the chain.
307 It modifies the op tree in place.
309 The peephole optimiser should never be completely replaced. Rather,
310 add code to it by wrapping the existing optimiser. The basic way to do
311 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
312 If the new code wishes to operate only on ops at a subroutine's top level,
313 rather than throughout the structure, it is likely to be more convenient
314 to wrap the L</PL_peepp> hook.
319 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
322 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
324 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.
325 This allows extensions to free any extra attribute they have locally attached to an OP.
326 It is also assured to first fire for the parent OP and then for its kids.
328 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.
333 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
335 PERLVARI(I, watchaddr, char **, 0)
336 PERLVAR(I, watchok, char *)
338 PERLVAR(I, perldb, U32)
340 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
342 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
344 /* pseudo environmental stuff */
345 PERLVAR(I, origargc, int)
346 PERLVAR(I, origargv, char **)
347 PERLVAR(I, envgv, GV *)
348 PERLVAR(I, incgv, GV *)
349 PERLVAR(I, hintgv, GV *)
350 PERLVAR(I, origfilename, char *)
351 PERLVARI(I, xsubfilename, const char *, NULL)
352 PERLVAR(I, diehook, SV *)
353 PERLVAR(I, warnhook, SV *)
356 PERLVAR(I, patchlevel, SV *)
357 PERLVAR(I, localpatches, const char * const *)
358 PERLVARI(I, splitstr, const char *, " ")
360 PERLVAR(I, minus_c, bool)
361 PERLVAR(I, minus_n, bool)
362 PERLVAR(I, minus_p, bool)
363 PERLVAR(I, minus_l, bool)
364 PERLVAR(I, minus_a, bool)
365 PERLVAR(I, minus_F, bool)
366 PERLVAR(I, doswitches, bool)
367 PERLVAR(I, minus_E, bool)
369 PERLVAR(I, inplace, char *)
370 PERLVAR(I, e_script, SV *)
372 PERLVAR(I, basetime, Time_t) /* $^T */
374 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
375 /* top fd to pass to subprocesses */
376 PERLVAR(I, statusvalue, I32) /* $? */
378 PERLVAR(I, statusvalue_vms, U32)
380 PERLVAR(I, statusvalue_posix, I32)
383 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
384 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
386 /* shortcuts to various I/O objects */
387 PERLVAR(I, stdingv, GV *) /* *STDIN */
388 PERLVAR(I, stderrgv, GV *) /* *STDERR */
389 PERLVAR(I, argvgv, GV *) /* *ARGV */
390 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
391 PERLVAR(I, argvout_stack, AV *)
393 /* shortcuts to regexp stuff */
394 PERLVAR(I, replgv, GV *) /* *^R */
396 /* shortcuts to misc objects */
397 PERLVAR(I, errgv, GV *) /* *@ */
399 /* shortcuts to debugging objects */
400 PERLVAR(I, DBgv, GV *) /* *DB::DB */
401 PERLVAR(I, DBline, GV *) /* *DB::line */
404 =for apidoc mn|GV *|PL_DBsub
405 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
406 the SV which holds the name of the sub being debugged. This is the C
407 variable which corresponds to Perl's $DB::sub variable. See
410 =for apidoc mn|SV *|PL_DBsingle
411 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
412 boolean which indicates whether subs are being single-stepped.
413 Single-stepping is automatically turned on after every step. This is the C
414 variable which corresponds to Perl's $DB::single variable. See
417 =for apidoc mn|SV *|PL_DBtrace
418 Trace variable used when Perl is run in debugging mode, with the B<-d>
419 switch. This is the C variable which corresponds to Perl's $DB::trace
420 variable. See C<L</PL_DBsingle>>.
425 PERLVAR(I, DBsub, GV *) /* *DB::sub */
426 PERLVAR(I, DBsingle, SV *) /* $DB::single */
427 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
428 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
429 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
431 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
434 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
435 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
436 PERLVAR(I, curstname, SV *) /* name of current package */
437 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
438 PERLVAR(I, endav, AV *) /* names of END subroutines */
439 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
440 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
441 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
443 /* subprocess state */
444 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
447 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
449 /* current interpreter roots */
450 PERLVAR(I, main_cv, CV *)
451 PERLVAR(I, main_root, OP *)
452 PERLVAR(I, main_start, OP *)
453 PERLVAR(I, eval_root, OP *)
454 PERLVAR(I, eval_start, OP *)
456 /* runtime control stuff */
457 PERLVARI(I, curcopdb, COP *, NULL)
459 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
460 PERLVAR(I, lastfd, int) /* what to preserve mode on */
461 PERLVAR(I, oldname, char *) /* what to preserve mode on */
462 /* Elements in this array have ';' appended and are injected as a single line
463 into the tokeniser. You can't put any (literal) newlines into any program
464 you stuff in into this array, as the point where it's injected is expecting
465 a single physical line. */
466 PERLVAR(I, preambleav, AV *)
467 PERLVAR(I, mess_sv, SV *)
468 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
470 /* funky return mechanisms */
471 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
473 /* statics moved here for shared library purposes */
474 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
475 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
476 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
477 PERLVARI(I, laststype, U16, OP_STAT)
479 PERLVARI(I, laststatval, int, -1)
481 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
484 /* interpreter atexit processing */
485 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
486 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
487 /* list of exit functions */
490 =for apidoc Amn|HV*|PL_modglobal
492 C<PL_modglobal> is a general purpose, interpreter global HV for use by
493 extensions that need to keep information on a per-interpreter basis.
494 In a pinch, it can also be used as a symbol table for extensions
495 to share data among each other. It is a good idea to use keys
496 prefixed by the package name of the extension that owns the data.
501 PERLVAR(I, modglobal, HV *) /* per-interp module data */
503 /* these used to be in global before 5.004_68 */
504 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
506 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
508 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
509 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
510 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
511 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
513 #ifdef HAVE_INTERP_INTERN
514 PERLVAR(I, sys_intern, struct interp_intern)
515 /* platform internals */
518 /* more statics moved here */
519 PERLVAR(I, DBcv, CV *) /* from perl.c */
520 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
521 compile-time common elem detection */
523 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
525 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
526 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
527 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
528 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
531 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
532 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
533 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
534 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
535 PERLVARI(I, an, U32, 0) /* malloc sequence number */
537 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
538 PERLVARI(I, breakable_sub_gen, U32, 0)
541 /* exercise wrap-around */
542 #define PERL_COP_SEQMAX (U32_MAX-50)
544 #define PERL_COP_SEQMAX 0
546 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
547 #undef PERL_COP_SEQMAX
549 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
550 PERLVAR(I, origalen, U32)
551 PERLVAR(I, origenviron, char **)
552 #ifdef PERL_USES_PL_PIDSTATUS
553 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
555 PERLVAR(I, osname, char *) /* operating system */
557 PERLVAR(I, sighandlerp, Sighandler_t)
559 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
561 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
563 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
565 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
567 PERLVAR(I, subname, SV *) /* name of current subroutine */
569 PERLVAR(I, subline, I32) /* line this subroutine began on */
570 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
572 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
573 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
574 in current "register" pad */
575 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
577 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
579 #if defined(USE_POSIX_2008_LOCALE) \
580 && defined(USE_THREAD_SAFE_LOCALE) \
581 && ! defined(HAS_QUERYLOCALE)
583 PERLVARA(I, curlocales, 12, char *)
586 #ifdef USE_LOCALE_COLLATE
588 PERLVAR(I, collation_name, char *) /* Name of current collation */
589 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
590 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
591 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
592 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
593 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
594 /* Assume until proven otherwise that it works */
595 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
596 PERLVARI(I, collation_standard, bool, TRUE)
597 /* Assume simple collation */
598 #endif /* USE_LOCALE_COLLATE */
600 PERLVARI(I, langinfo_buf, char *, NULL)
601 PERLVARI(I, langinfo_bufsize, Size_t, 0)
602 PERLVARI(I, setlocale_buf, char *, NULL)
603 PERLVARI(I, setlocale_bufsize, Size_t, 0)
605 #ifdef PERL_SAWAMPERSAND
606 PERLVAR(I, sawampersand, U8) /* must save all match strings */
609 PERLVAR(I, unsafe, bool)
610 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
612 /* current phase the interpreter is in
613 for ordering this structure to remove holes, we're assuming that this is 4
615 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
617 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
619 /* This value may be set when embedding for full cleanup */
620 /* 0=none, 1=full, 2=full with checks */
621 /* mod_perl is special, and also assigns a meaning -1 */
622 PERLVARI(I, perl_destruct_level, signed char, 0)
624 #ifdef USE_LOCALE_NUMERIC
626 PERLVARI(I, numeric_standard, int, TRUE)
627 /* Assume C locale numerics */
628 PERLVARI(I, numeric_underlying, bool, TRUE)
629 /* Assume underlying locale numerics */
630 PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
631 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
632 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
634 # ifdef HAS_POSIX_2008_LOCALE
636 PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
639 #endif /* !USE_LOCALE_NUMERIC */
641 /* Unicode inversion lists */
642 PERLVAR(I, Latin1, SV *)
643 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
644 PERLVAR(I, AboveLatin1, SV *)
645 PERLVAR(I, InBitmap, SV *)
647 PERLVAR(I, NonL1NonFinalFold, SV *)
648 PERLVAR(I, HasMultiCharFold, SV *)
650 /* utf8 character class swashes */
651 PERLVAR(I, utf8_mark, SV *)
652 PERLVAR(I, utf8_toupper, SV *)
653 PERLVAR(I, utf8_totitle, SV *)
654 PERLVAR(I, utf8_tolower, SV *)
655 PERLVAR(I, utf8_tofold, SV *)
656 PERLVAR(I, utf8_charname_begin, SV *)
657 PERLVAR(I, utf8_charname_continue, SV *)
659 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
660 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
661 PERLVAR(I, GCB_invlist, SV *)
662 PERLVAR(I, LB_invlist, SV *)
663 PERLVAR(I, SB_invlist, SV *)
664 PERLVAR(I, SCX_invlist, SV *)
665 PERLVAR(I, WB_invlist, SV *)
666 PERLVAR(I, Assigned_invlist, SV *)
667 PERLVAR(I, seen_deprecated_macro, HV *)
669 PERLVAR(I, last_swash_hv, HV *)
670 PERLVAR(I, last_swash_tmps, U8 *)
671 PERLVAR(I, last_swash_slen, STRLEN)
672 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
673 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
676 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
678 /* One byte hole in the interpreter structure. */
681 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
682 PERLVAR(I, srand_called, bool)
684 /* Array of signal handlers, indexed by signal number, through which the C
685 signal handler dispatches. */
686 PERLVAR(I, psig_ptr, SV **)
687 /* Array of names of signals, indexed by signal number, for (re)use as the first
688 argument to a signal handler. Only one block of memory is allocated for
689 both psig_name and psig_ptr. */
690 PERLVAR(I, psig_name, SV **)
692 #if defined(PERL_IMPLICIT_SYS)
693 PERLVAR(I, Mem, struct IPerlMem *)
694 PERLVAR(I, MemShared, struct IPerlMem *)
695 PERLVAR(I, MemParse, struct IPerlMem *)
696 PERLVAR(I, Env, struct IPerlEnv *)
697 PERLVAR(I, StdIO, struct IPerlStdIO *)
698 PERLVAR(I, LIO, struct IPerlLIO *)
699 PERLVAR(I, Dir, struct IPerlDir *)
700 PERLVAR(I, Sock, struct IPerlSock *)
701 PERLVAR(I, Proc, struct IPerlProc *)
704 PERLVAR(I, ptr_table, PTR_TBL_t *)
705 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
707 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
710 #if defined(USE_ITHREADS)
711 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
713 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
714 values in op_pmoffset of pmop.
715 Entry 0 is an SV whose PV is a
716 "packed" list of IVs listing
717 the now-free slots in the array */
718 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
719 PERLVARI(I, stashpadmax, PADOFFSET, 64)
720 PERLVARI(I, stashpadix, PADOFFSET, 0)
723 #ifdef USE_REENTRANT_API
724 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
727 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
728 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
731 PERLVARI(I, perlio, PerlIOl *, NULL)
732 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
733 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
736 PERLVAR(I, utf8_idstart, SV *)
737 PERLVAR(I, utf8_idcont, SV *)
738 PERLVAR(I, utf8_xidstart, SV *)
739 PERLVAR(I, utf8_perl_idstart, SV *)
740 PERLVAR(I, utf8_perl_idcont, SV *)
741 PERLVAR(I, utf8_xidcont, SV *)
743 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
745 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
746 PERLVARI(I, unitcheckav_save, AV *, NULL)
747 /* save UNITCHECK{}s when compiling */
749 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
751 /* Hooks to shared SVs and locks. */
752 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
753 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
755 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
757 /* This reference ensures that the mathoms are linked with perl */
758 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
760 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
762 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
764 /* Can shared object be destroyed */
765 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
768 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
771 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
773 /* Register of known Method Resolution Orders.
774 What this actually points to is an implementation detail (it may change to
775 a structure incorporating a reference count - use mro_get_from_name to
776 retrieve a C<struct mro_alg *> */
777 PERLVAR(I, registered_mros, HV *)
779 /* Compile-time block start/end hooks */
780 PERLVAR(I, blockhooks, AV *)
782 /* Everything that folds to a given character, for case insensitivity regex
784 PERLVARI(I, utf8_foldclosures, HV *, NULL)
786 /* List of characters that participate in folds (except marks, etc in
787 * multi-char folds) */
788 PERLVARI(I, utf8_foldable, SV *, NULL)
790 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
792 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
794 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
795 present always, as -DDEBUGGING must be binary compatible with non. */
796 PERLVARI(I, scopestack_name, const char * *, NULL)
798 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
800 /* Hook for File::Glob */
801 PERLVARI(I, globhook, globhook_t, NULL)
803 /* The last unconditional member of the interpreter structure when 5.18.0 was
804 released. The offset of the end of this is baked into a global variable in
805 any shared perl library which will allow a sanity test in future perl
807 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
809 #ifdef PERL_IMPLICIT_CONTEXT
810 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
811 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
812 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
813 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
817 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
818 /* For use with the memory debugging code in util.c. This is used only in
819 * DEBUGGING builds (as long as the relevant structure is defined), but
820 * defining it in non-debug builds too means that we retain binary
821 * compatibility between otherwise-compatible plain and debug builds. */
822 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
825 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
826 /* File descriptor to talk to the child which dumps scalars. */
827 PERLVARI(I, dumper_fd, int, -1)
831 #ifdef DEBUG_LEAKING_SCALARS
832 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
835 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
837 #ifdef PERL_TRACE_OPS
838 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
839 If PERL_TRACE_OPS is enabled, we'll dump
840 a summary count of all ops executed in the
841 program at perl_destruct time. For
842 profiling/debugging only. Works only if
843 DEBUGGING is enabled, too. */
846 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
848 PERLVARI(I, dump_re_max_len, STRLEN, 60)
850 /* For internal uses of randomness, this ensures the sequence of
851 * random numbers returned by rand() isn't modified by perl's internal
853 * This is important if the user has called srand() with a seed.
856 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
858 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
859 * above on where there are gaps which currently will be structure padding. */
861 /* Within a stable branch, new variables must be added to the very end, before
862 * this comment, for binary compatibility (the offsets of the old members must
864 * (Don't forget to add your variable also to perl_clone()!)
865 * XSUB.h provides wrapper functions via perlapi.h that make this
866 * irrelevant, but not all code may be expected to #include XSUB.h.