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 $1 et al are visible */
138 PERLVARI(I, reg_curpm, PMOP*, NULL)
140 /* the currently active slab in a chain of slabs of regmatch states,
141 * and the currently active state within that slab. This stack of states
142 * is shared amongst re-entrant calls to the regex engine */
144 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
145 PERLVAR(I, regmatch_state, regmatch_state *)
147 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
150 =for apidoc Amn|SV|PL_sv_undef
151 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
153 =for apidoc Amn|SV|PL_sv_no
154 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
157 =for apidoc Amn|SV|PL_sv_yes
158 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
164 PERLVAR(I, sv_undef, SV)
165 PERLVAR(I, sv_no, SV)
166 PERLVAR(I, sv_yes, SV)
167 PERLVAR(I, padname_undef, PADNAME)
168 PERLVAR(I, padname_const, PADNAME)
169 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
171 PERLVAR(I, parser, yy_parser *) /* current parser state */
173 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
177 =for apidoc Amn|STRLEN|PL_na
179 A convenience variable which is typically used with C<SvPV> when one
180 doesn't care about the length of the string. It is usually more efficient
181 to either declare a local variable and use that instead or to use the
187 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
191 PERLVAR(I, statbuf, Stat_t)
192 PERLVAR(I, statcache, Stat_t) /* _ */
193 PERLVAR(I, statgv, GV *)
194 PERLVARI(I, statname, SV *, NULL)
197 =for apidoc mn|SV*|PL_rs
199 The input record separator - C<$/> in Perl space.
201 =for apidoc mn|GV*|PL_last_in_gv
203 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
205 =for apidoc mn|GV*|PL_ofsgv
207 The glob containing the output field separator - C<*,> in Perl space.
212 PERLVAR(I, rs, SV *) /* input record separator $/ */
213 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
214 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
215 PERLVAR(I, defoutgv, GV *) /* default FH for output */
216 PERLVARI(I, chopset, const char *, " \n-") /* $: */
217 PERLVAR(I, formtarget, SV *)
218 PERLVAR(I, bodytarget, SV *)
219 PERLVAR(I, toptarget, SV *)
222 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
223 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
225 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
226 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
227 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
229 /* statics "owned" by various functions */
230 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
232 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
235 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
236 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
237 PERLVAR(I, firstgv, GV *) /* $a */
238 PERLVAR(I, secondgv, GV *) /* $b */
241 PERLVAR(I, efloatbuf, char *)
242 PERLVAR(I, efloatsize, STRLEN)
244 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
247 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
249 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
250 PERLVAR(I, in_utf8_CTYPE_locale, bool)
251 PERLVAR(I, in_utf8_COLLATE_locale, bool)
252 #ifdef USE_LOCALE_CTYPE
253 PERLVAR(I, warn_locale, SV *)
256 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
259 =for apidoc Amn|peep_t|PL_peepp
261 Pointer to the per-subroutine 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
264 some ops and to perform small-scale optimisations. The function is
265 called once for each subroutine that is compiled, and is passed, as sole
266 parameter, a pointer to the op that is the entry point to the subroutine.
267 It modifies the op tree in place.
269 The peephole optimiser should never be completely replaced. Rather,
270 add code to it by wrapping the existing optimiser. The basic way to do
271 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
272 If the new code wishes to operate on ops throughout the subroutine's
273 structure, rather than just at the top level, it is likely to be more
274 convenient to wrap the L</PL_rpeepp> hook.
279 PERLVARI(I, peepp, peep_t, Perl_peep)
282 =for apidoc Amn|peep_t|PL_rpeepp
284 Pointer to the recursive peephole optimiser. This is a function
285 that gets called at the end of compilation of a Perl subroutine (or
286 equivalently independent piece of Perl code) to perform fixups of some
287 ops and to perform small-scale optimisations. The function is called
288 once for each chain of ops linked through their C<op_next> fields;
289 it is recursively called to handle each side chain. It is passed, as
290 sole parameter, a pointer to the op that is at the head of the chain.
291 It modifies the op tree in place.
293 The peephole optimiser should never be completely replaced. Rather,
294 add code to it by wrapping the existing optimiser. The basic way to do
295 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
296 If the new code wishes to operate only on ops at a subroutine's top level,
297 rather than throughout the structure, it is likely to be more convenient
298 to wrap the L</PL_peepp> hook.
303 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
306 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
308 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.
309 This allows extensions to free any extra attribute they have locally attached to an OP.
310 It is also assured to first fire for the parent OP and then for its kids.
312 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.
317 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
319 PERLVARI(I, watchaddr, char **, 0)
320 PERLVAR(I, watchok, char *)
322 PERLVAR(I, perldb, U32)
324 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
326 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
328 /* pseudo environmental stuff */
329 PERLVAR(I, origargc, int)
330 PERLVAR(I, origargv, char **)
331 PERLVAR(I, envgv, GV *)
332 PERLVAR(I, incgv, GV *)
333 PERLVAR(I, hintgv, GV *)
334 PERLVAR(I, origfilename, char *)
335 PERLVARI(I, xsubfilename, const char *, NULL)
336 PERLVAR(I, diehook, SV *)
337 PERLVAR(I, warnhook, SV *)
340 PERLVAR(I, patchlevel, SV *)
341 PERLVAR(I, localpatches, const char * const *)
342 PERLVARI(I, splitstr, const char *, " ")
344 PERLVAR(I, minus_c, bool)
345 PERLVAR(I, minus_n, bool)
346 PERLVAR(I, minus_p, bool)
347 PERLVAR(I, minus_l, bool)
348 PERLVAR(I, minus_a, bool)
349 PERLVAR(I, minus_F, bool)
350 PERLVAR(I, doswitches, bool)
351 PERLVAR(I, minus_E, bool)
353 PERLVAR(I, inplace, char *)
354 PERLVAR(I, e_script, SV *)
356 PERLVAR(I, basetime, Time_t) /* $^T */
358 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
359 /* top fd to pass to subprocesses */
360 PERLVAR(I, statusvalue, I32) /* $? */
362 PERLVAR(I, statusvalue_vms, U32)
364 PERLVAR(I, statusvalue_posix, I32)
367 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
368 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
370 /* shortcuts to various I/O objects */
371 PERLVAR(I, stdingv, GV *) /* *STDIN */
372 PERLVAR(I, stderrgv, GV *) /* *STDERR */
373 PERLVAR(I, argvgv, GV *) /* *ARGV */
374 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
375 PERLVAR(I, argvout_stack, AV *)
377 /* shortcuts to regexp stuff */
378 PERLVAR(I, replgv, GV *) /* *^R */
380 /* shortcuts to misc objects */
381 PERLVAR(I, errgv, GV *) /* *@ */
383 /* shortcuts to debugging objects */
384 PERLVAR(I, DBgv, GV *) /* *DB::DB */
385 PERLVAR(I, DBline, GV *) /* *DB::line */
388 =for apidoc mn|GV *|PL_DBsub
389 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
390 the SV which holds the name of the sub being debugged. This is the C
391 variable which corresponds to Perl's $DB::sub variable. See
394 =for apidoc mn|SV *|PL_DBsingle
395 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
396 boolean which indicates whether subs are being single-stepped.
397 Single-stepping is automatically turned on after every step. This is the C
398 variable which corresponds to Perl's $DB::single variable. See
401 =for apidoc mn|SV *|PL_DBtrace
402 Trace variable used when Perl is run in debugging mode, with the B<-d>
403 switch. This is the C variable which corresponds to Perl's $DB::trace
404 variable. See C<L</PL_DBsingle>>.
409 PERLVAR(I, DBsub, GV *) /* *DB::sub */
410 PERLVAR(I, DBsingle, SV *) /* $DB::single */
411 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
412 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
413 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
415 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
418 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
419 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
420 PERLVAR(I, curstname, SV *) /* name of current package */
421 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
422 PERLVAR(I, endav, AV *) /* names of END subroutines */
423 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
424 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
425 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
427 /* subprocess state */
428 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
431 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
433 /* current interpreter roots */
434 PERLVAR(I, main_cv, CV *)
435 PERLVAR(I, main_root, OP *)
436 PERLVAR(I, main_start, OP *)
437 PERLVAR(I, eval_root, OP *)
438 PERLVAR(I, eval_start, OP *)
440 /* runtime control stuff */
441 PERLVARI(I, curcopdb, COP *, NULL)
443 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
444 PERLVAR(I, lastfd, int) /* what to preserve mode on */
445 PERLVAR(I, oldname, char *) /* what to preserve mode on */
446 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
447 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
448 /* Elements in this array have ';' appended and are injected as a single line
449 into the tokeniser. You can't put any (literal) newlines into any program
450 you stuff in into this array, as the point where it's injected is expecting
451 a single physical line. */
452 PERLVAR(I, preambleav, AV *)
453 PERLVAR(I, mess_sv, SV *)
454 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
456 /* funky return mechanisms */
457 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
459 /* statics moved here for shared library purposes */
460 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
461 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
462 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
463 PERLVARI(I, laststype, U16, OP_STAT)
465 PERLVARI(I, laststatval, int, -1)
467 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
470 /* interpreter atexit processing */
471 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
472 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
473 /* list of exit functions */
476 =for apidoc Amn|HV*|PL_modglobal
478 C<PL_modglobal> is a general purpose, interpreter global HV for use by
479 extensions that need to keep information on a per-interpreter basis.
480 In a pinch, it can also be used as a symbol table for extensions
481 to share data among each other. It is a good idea to use keys
482 prefixed by the package name of the extension that owns the data.
487 PERLVAR(I, modglobal, HV *) /* per-interp module data */
489 /* these used to be in global before 5.004_68 */
490 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
492 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
494 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
495 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
496 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
497 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
499 #ifdef HAVE_INTERP_INTERN
500 PERLVAR(I, sys_intern, struct interp_intern)
501 /* platform internals */
504 /* more statics moved here */
505 PERLVAR(I, DBcv, CV *) /* from perl.c */
506 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
507 compile-time common elem detection */
509 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
511 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
512 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
513 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
514 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
517 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
518 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
519 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
520 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
521 PERLVARI(I, an, U32, 0) /* malloc sequence number */
523 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
524 PERLVARI(I, breakable_sub_gen, U32, 0)
527 /* exercise wrap-around */
528 #define PERL_COP_SEQMAX (U32_MAX-50)
530 #define PERL_COP_SEQMAX 0
532 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
533 #undef PERL_COP_SEQMAX
535 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
536 PERLVAR(I, origalen, U32)
537 PERLVAR(I, origenviron, char **)
538 #ifdef PERL_USES_PL_PIDSTATUS
539 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
541 PERLVAR(I, osname, char *) /* operating system */
543 PERLVAR(I, sighandlerp, Sighandler_t)
545 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
547 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
549 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
551 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
553 PERLVAR(I, subname, SV *) /* name of current subroutine */
555 PERLVAR(I, subline, I32) /* line this subroutine began on */
556 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
558 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
559 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
560 in current "register" pad */
561 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
563 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
565 #ifdef USE_LOCALE_COLLATE
566 PERLVAR(I, collation_name, char *) /* Name of current collation */
567 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
568 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
569 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
570 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
571 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
572 /* Assume until proven otherwise that it works */
573 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
574 PERLVARI(I, collation_standard, bool, TRUE)
575 /* Assume simple collation */
576 #endif /* USE_LOCALE_COLLATE */
578 #ifdef PERL_SAWAMPERSAND
579 PERLVAR(I, sawampersand, U8) /* must save all match strings */
582 PERLVAR(I, unsafe, bool)
583 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
585 /* current phase the interpreter is in
586 for ordering this structure to remove holes, we're assuming that this is 4
588 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
590 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
592 /* This value may be set when embedding for full cleanup */
593 /* 0=none, 1=full, 2=full with checks */
594 /* mod_perl is special, and also assigns a meaning -1 */
595 PERLVARI(I, perl_destruct_level, signed char, 0)
597 #ifdef USE_LOCALE_NUMERIC
599 PERLVARI(I, numeric_standard, int, TRUE)
600 /* Assume simple numerics */
601 PERLVARI(I, numeric_local, bool, TRUE)
602 /* Assume local numerics */
603 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
604 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
606 #endif /* !USE_LOCALE_NUMERIC */
608 /* Unicode inversion lists */
609 PERLVAR(I, Latin1, SV *)
610 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
611 PERLVAR(I, AboveLatin1, SV *)
612 PERLVAR(I, InBitmap, SV *)
614 PERLVAR(I, NonL1NonFinalFold, SV *)
615 PERLVAR(I, HasMultiCharFold, SV *)
617 /* utf8 character class swashes */
618 PERLVAR(I, utf8_mark, SV *)
619 PERLVAR(I, utf8_toupper, SV *)
620 PERLVAR(I, utf8_totitle, SV *)
621 PERLVAR(I, utf8_tolower, SV *)
622 PERLVAR(I, utf8_tofold, SV *)
623 PERLVAR(I, utf8_charname_begin, SV *)
624 PERLVAR(I, utf8_charname_continue, SV *)
626 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
627 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
628 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
629 PERLVAR(I, GCB_invlist, SV *)
630 PERLVAR(I, LB_invlist, SV *)
631 PERLVAR(I, SB_invlist, SV *)
632 PERLVAR(I, WB_invlist, SV *)
633 PERLVAR(I, Assigned_invlist, SV *)
634 PERLVAR(I, seen_deprecated_macro, HV *)
636 PERLVAR(I, last_swash_hv, HV *)
637 PERLVAR(I, last_swash_tmps, U8 *)
638 PERLVAR(I, last_swash_slen, STRLEN)
639 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
640 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
643 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
645 /* One byte hole in the interpreter structure. */
648 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
649 PERLVAR(I, srand_called, bool)
651 /* Array of signal handlers, indexed by signal number, through which the C
652 signal handler dispatches. */
653 PERLVAR(I, psig_ptr, SV **)
654 /* Array of names of signals, indexed by signal number, for (re)use as the first
655 argument to a signal handler. Only one block of memory is allocated for
656 both psig_name and psig_ptr. */
657 PERLVAR(I, psig_name, SV **)
659 #if defined(PERL_IMPLICIT_SYS)
660 PERLVAR(I, Mem, struct IPerlMem *)
661 PERLVAR(I, MemShared, struct IPerlMem *)
662 PERLVAR(I, MemParse, struct IPerlMem *)
663 PERLVAR(I, Env, struct IPerlEnv *)
664 PERLVAR(I, StdIO, struct IPerlStdIO *)
665 PERLVAR(I, LIO, struct IPerlLIO *)
666 PERLVAR(I, Dir, struct IPerlDir *)
667 PERLVAR(I, Sock, struct IPerlSock *)
668 PERLVAR(I, Proc, struct IPerlProc *)
671 PERLVAR(I, ptr_table, PTR_TBL_t *)
672 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
674 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
677 #if defined(USE_ITHREADS)
678 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
680 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
681 values in op_pmoffset of pmop.
682 Entry 0 is an SV whose PV is a
683 "packed" list of IVs listing
684 the now-free slots in the array */
685 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
686 PERLVARI(I, stashpadmax, PADOFFSET, 64)
687 PERLVARI(I, stashpadix, PADOFFSET, 0)
690 #ifdef USE_REENTRANT_API
691 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
694 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
695 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
698 PERLVARI(I, perlio, PerlIOl *, NULL)
699 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
700 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
703 PERLVAR(I, utf8_idstart, SV *)
704 PERLVAR(I, utf8_idcont, SV *)
705 PERLVAR(I, utf8_xidstart, SV *)
706 PERLVAR(I, utf8_perl_idstart, SV *)
707 PERLVAR(I, utf8_perl_idcont, SV *)
708 PERLVAR(I, utf8_xidcont, SV *)
710 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
712 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
713 PERLVARI(I, unitcheckav_save, AV *, NULL)
714 /* save UNITCHECK{}s when compiling */
716 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
718 /* Hooks to shared SVs and locks. */
719 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
720 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
722 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
724 /* This reference ensures that the mathoms are linked with perl */
725 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
727 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
729 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
731 /* Can shared object be destroyed */
732 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
735 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
738 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
740 /* Register of known Method Resolution Orders.
741 What this actually points to is an implementation detail (it may change to
742 a structure incorporating a reference count - use mro_get_from_name to
743 retrieve a C<struct mro_alg *> */
744 PERLVAR(I, registered_mros, HV *)
746 /* Compile-time block start/end hooks */
747 PERLVAR(I, blockhooks, AV *)
749 /* Everything that folds to a given character, for case insensitivity regex
751 PERLVARI(I, utf8_foldclosures, HV *, NULL)
753 /* List of characters that participate in folds (except marks, etc in
754 * multi-char folds) */
755 PERLVARI(I, utf8_foldable, SV *, NULL)
757 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
759 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
761 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
762 present always, as -DDEBUGGING must be binary compatible with non. */
763 PERLVARI(I, scopestack_name, const char * *, NULL)
765 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
767 /* Hook for File::Glob */
768 PERLVARI(I, globhook, globhook_t, NULL)
770 /* The last unconditional member of the interpreter structure when 5.18.0 was
771 released. The offset of the end of this is baked into a global variable in
772 any shared perl library which will allow a sanity test in future perl
774 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
776 #ifdef PERL_IMPLICIT_CONTEXT
777 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
778 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
779 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
780 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
784 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
785 /* For use with the memory debugging code in util.c. This is used only in
786 * DEBUGGING builds (as long as the relevant structure is defined), but
787 * defining it in non-debug builds too means that we retain binary
788 * compatibility between otherwise-compatible plain and debug builds. */
789 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
792 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
793 /* File descriptor to talk to the child which dumps scalars. */
794 PERLVARI(I, dumper_fd, int, -1)
798 #ifdef DEBUG_LEAKING_SCALARS
799 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
802 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
804 #ifdef PERL_TRACE_OPS
805 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
806 If PERL_TRACE_OPS is enabled, we'll dump
807 a summary count of all ops executed in the
808 program at perl_destruct time. For
809 profiling/debugging only. Works only if
810 DEBUGGING is enabled, too. */
813 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
815 PERLVARI(I, dump_re_max_len, STRLEN, 0)
817 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
818 * above on where there are gaps which currently will be structure padding. */
820 /* Within a stable branch, new variables must be added to the very end, before
821 * this comment, for binary compatibility (the offsets of the old members must
823 * (Don't forget to add your variable also to perl_clone()!)
824 * XSUB.h provides wrapper functions via perlapi.h that make this
825 * irrelevant, but not all code may be expected to #include XSUB.h.