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, scopestack, I32 *) /* scopes we've ENTERed */
47 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
48 present always, as -DDEUBGGING must be binary compatible with non. */
49 PERLVARI(I, scopestack_name, const char * *, NULL)
50 PERLVAR(I, scopestack_ix, I32)
51 PERLVAR(I, scopestack_max, I32)
53 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
54 LEAVEing scopes we've ENTERed */
55 PERLVAR(I, savestack_ix, I32)
56 PERLVAR(I, savestack_max, I32)
58 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
59 PERLVARI(I, tmps_ix, I32, -1)
60 PERLVARI(I, tmps_floor, I32, -1)
61 PERLVAR(I, tmps_max, I32)
62 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
65 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
67 PERLVAR(I, markstack_ptr, I32 *)
68 PERLVAR(I, markstack_max, I32 *)
70 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
71 PERLVAR(I, Xpv, XPV *) /* used to hold temporary values */
74 =for apidoc Amn|STRLEN|PL_na
76 A convenience variable which is typically used with C<SvPV> when one
77 doesn't care about the length of the string. It is usually more efficient
78 to either declare a local variable and use that instead or to use the
84 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
88 PERLVAR(I, statbuf, Stat_t)
89 PERLVAR(I, statcache, Stat_t) /* _ */
90 PERLVAR(I, statgv, GV *)
91 PERLVARI(I, statname, SV *, NULL)
94 PERLVAR(I, timesbuf, struct tms)
97 /* Fields used by magic variables such as $@, $/ and so on */
98 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
101 =for apidoc mn|SV*|PL_rs
103 The input record separator - C<$/> in Perl space.
105 =for apidoc mn|GV*|PL_last_in_gv
107 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
109 =for apidoc mn|GV*|PL_ofsgv
111 The glob containing the output field separator - C<*,> in Perl space.
116 PERLVAR(I, rs, SV *) /* input record separator $/ */
117 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
118 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
119 PERLVAR(I, defoutgv, GV *) /* default FH for output */
120 PERLVARI(I, chopset, const char *, " \n-") /* $: */
121 PERLVAR(I, formtarget, SV *)
122 PERLVAR(I, bodytarget, SV *)
123 PERLVAR(I, toptarget, SV *)
126 PERLVAR(I, defstash, HV *) /* main symbol table */
127 PERLVAR(I, curstash, HV *) /* symbol table for current package */
129 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
130 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
131 PERLVAR(I, curcop, COP *)
132 PERLVAR(I, curstack, AV *) /* THE STACK */
133 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
134 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
137 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
138 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
139 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
141 /* statics "owned" by various functions */
142 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
144 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
147 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
148 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
149 PERLVAR(I, firstgv, GV *) /* $a */
150 PERLVAR(I, secondgv, GV *) /* $b */
153 PERLVAR(I, efloatbuf, char *)
154 PERLVAR(I, efloatsize, STRLEN)
158 PERLVAR(I, reg_state, struct re_save_state)
160 PERLVAR(I, regdummy, regnode) /* from regcomp.c */
162 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
166 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
168 PERLVARA(I, colors,6, char *) /* from regcomp.c */
171 =for apidoc Amn|peep_t|PL_peepp
173 Pointer to the per-subroutine peephole optimiser. This is a function
174 that gets called at the end of compilation of a Perl subroutine (or
175 equivalently independent piece of Perl code) to perform fixups of
176 some ops and to perform small-scale optimisations. The function is
177 called once for each subroutine that is compiled, and is passed, as sole
178 parameter, a pointer to the op that is the entry point to the subroutine.
179 It modifies the op tree in place.
181 The peephole optimiser should never be completely replaced. Rather,
182 add code to it by wrapping the existing optimiser. The basic way to do
183 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
184 If the new code wishes to operate on ops throughout the subroutine's
185 structure, rather than just at the top level, it is likely to be more
186 convenient to wrap the L</PL_rpeepp> hook.
191 PERLVARI(I, peepp, peep_t, Perl_peep)
194 =for apidoc Amn|peep_t|PL_rpeepp
196 Pointer to the recursive peephole optimiser. This is a function
197 that gets called at the end of compilation of a Perl subroutine (or
198 equivalently independent piece of Perl code) to perform fixups of some
199 ops and to perform small-scale optimisations. The function is called
200 once for each chain of ops linked through their C<op_next> fields;
201 it is recursively called to handle each side chain. It is passed, as
202 sole parameter, a pointer to the op that is at the head of the chain.
203 It modifies the op tree in place.
205 The peephole optimiser should never be completely replaced. Rather,
206 add code to it by wrapping the existing optimiser. The basic way to do
207 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
208 If the new code wishes to operate only on ops at a subroutine's top level,
209 rather than throughout the structure, it is likely to be more convenient
210 to wrap the L</PL_peepp> hook.
215 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
218 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
220 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.
221 This allows extensions to free any extra attribute they have locally attached to an OP.
222 It is also assured to first fire for the parent OP and then for its kids.
224 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.
229 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
231 PERLVARI(I, watchaddr, char **, 0)
232 PERLVAR(I, watchok, char *)
234 /* the currently active slab in a chain of slabs of regmatch states,
235 * and the currently active state within that slab */
237 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
238 PERLVAR(I, regmatch_state, regmatch_state *)
240 /* Put anything new that is pointer aligned here. */
242 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
243 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
244 PERLVAR(I, colorset, bool) /* from regcomp.c */
245 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
246 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
247 PERLVAR(I, tainting, bool) /* doing taint checks */
249 /* This value may be set when embedding for full cleanup */
250 /* 0=none, 1=full, 2=full with checks */
251 /* mod_perl is special, and also assigns a meaning -1 */
252 PERLVARI(I, perl_destruct_level, signed char, 0)
254 /* current phase the interpreter is in */
255 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
257 PERLVAR(I, perldb, U32)
259 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
261 /* pseudo environmental stuff */
262 PERLVAR(I, origargc, int)
263 PERLVAR(I, origargv, char **)
264 PERLVAR(I, envgv, GV *)
265 PERLVAR(I, incgv, GV *)
266 PERLVAR(I, hintgv, GV *)
267 PERLVAR(I, origfilename, char *)
268 PERLVAR(I, diehook, SV *)
269 PERLVAR(I, warnhook, SV *)
272 PERLVAR(I, patchlevel, SV *)
273 PERLVAR(I, apiversion, SV *)
274 PERLVAR(I, localpatches, const char * const *)
275 PERLVARI(I, splitstr, const char *, " ")
277 PERLVAR(I, minus_c, bool)
278 PERLVAR(I, minus_n, bool)
279 PERLVAR(I, minus_p, bool)
280 PERLVAR(I, minus_l, bool)
281 PERLVAR(I, minus_a, bool)
282 PERLVAR(I, minus_F, bool)
283 PERLVAR(I, doswitches, bool)
284 PERLVAR(I, minus_E, bool)
288 =for apidoc mn|bool|PL_dowarn
290 The C variable which corresponds to Perl's $^W warning variable.
295 PERLVAR(I, dowarn, U8)
296 #ifdef PERL_SAWAMPERSAND
297 PERLVAR(I, sawampersand, U8) /* must save all match strings */
299 PERLVAR(I, unsafe, bool)
300 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
302 PERLVAR(I, inplace, char *)
303 PERLVAR(I, e_script, SV *)
305 PERLVAR(I, basetime, Time_t) /* $^T */
307 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
308 /* top fd to pass to subprocesses */
309 PERLVAR(I, statusvalue, I32) /* $? */
311 PERLVAR(I, statusvalue_vms, U32)
313 PERLVAR(I, statusvalue_posix, I32)
316 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
317 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
319 /* shortcuts to various I/O objects */
320 PERLVAR(I, stdingv, GV *) /* *STDIN */
321 PERLVAR(I, stderrgv, GV *) /* *STDERR */
322 PERLVAR(I, defgv, GV *)
323 PERLVAR(I, argvgv, GV *) /* *ARGV */
324 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
325 PERLVAR(I, argvout_stack, AV *)
327 /* shortcuts to regexp stuff */
328 PERLVAR(I, replgv, GV *) /* *^R */
330 /* shortcuts to misc objects */
331 PERLVAR(I, errgv, GV *) /* *@ */
333 /* shortcuts to debugging objects */
334 PERLVAR(I, DBgv, GV *) /* *DB::DB */
335 PERLVAR(I, DBline, GV *) /* *DB::line */
338 =for apidoc mn|GV *|PL_DBsub
339 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
340 the SV which holds the name of the sub being debugged. This is the C
341 variable which corresponds to Perl's $DB::sub variable. See
344 =for apidoc mn|SV *|PL_DBsingle
345 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
346 boolean which indicates whether subs are being single-stepped.
347 Single-stepping is automatically turned on after every step. This is the C
348 variable which corresponds to Perl's $DB::single variable. See
351 =for apidoc mn|SV *|PL_DBtrace
352 Trace variable used when Perl is run in debugging mode, with the B<-d>
353 switch. This is the C variable which corresponds to Perl's $DB::trace
354 variable. See C<PL_DBsingle>.
359 PERLVAR(I, DBsub, GV *) /* *DB::sub */
360 PERLVAR(I, DBsingle, SV *) /* $DB::single */
361 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
362 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
363 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
366 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
367 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
368 PERLVAR(I, curstname, SV *) /* name of current package */
369 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
370 PERLVAR(I, endav, AV *) /* names of END subroutines */
371 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
372 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
373 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
374 PERLVAR(I, strtab, HV *) /* shared string table */
375 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
377 /* funky return mechanisms */
378 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
380 /* memory management */
381 PERLVAR(I, sv_count, I32) /* how many SV* are currently allocated */
382 PERLVAR(I, sv_objcount, I32) /* how many objects are currently allocated */
383 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
384 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
386 /* subprocess state */
387 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
390 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
392 /* current interpreter roots */
393 PERLVAR(I, main_cv, CV *)
394 PERLVAR(I, main_root, OP *)
395 PERLVAR(I, main_start, OP *)
396 PERLVAR(I, eval_root, OP *)
397 PERLVAR(I, eval_start, OP *)
399 /* runtime control stuff */
400 PERLVARI(I, curcopdb, COP *, NULL)
402 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
403 PERLVAR(I, lastfd, int) /* what to preserve mode on */
404 PERLVAR(I, oldname, char *) /* what to preserve mode on */
405 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
406 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
407 /* Elements in this array have ';' appended and are injected as a single line
408 into the tokeniser. You can't put any (literal) newlines into any program
409 you stuff in into this array, as the point where it's injected is expecting
410 a single physical line. */
411 PERLVAR(I, preambleav, AV *)
412 PERLVAR(I, mess_sv, SV *)
413 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
414 /* statics moved here for shared library purposes */
415 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
416 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
417 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
418 PERLVARI(I, laststype, U16, OP_STAT)
419 PERLVARI(I, laststatval, int, -1)
421 /* interpreter atexit processing */
422 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
423 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
424 /* list of exit functions */
427 =for apidoc Amn|HV*|PL_modglobal
429 C<PL_modglobal> is a general purpose, interpreter global HV for use by
430 extensions that need to keep information on a per-interpreter basis.
431 In a pinch, it can also be used as a symbol table for extensions
432 to share data among each other. It is a good idea to use keys
433 prefixed by the package name of the extension that owns the data.
438 PERLVAR(I, modglobal, HV *) /* per-interp module data */
440 /* these used to be in global before 5.004_68 */
441 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
443 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
445 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
446 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
447 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
448 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
449 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
451 #ifdef HAVE_INTERP_INTERN
452 PERLVAR(I, sys_intern, struct interp_intern)
453 /* platform internals */
456 /* more statics moved here */
457 PERLVAR(I, DBcv, CV *) /* from perl.c */
458 PERLVARI(I, generation, int, 100) /* from op.c */
460 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
461 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
462 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
463 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
465 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
466 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
467 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
468 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
469 PERLVARI(I, an, U32, 0) /* malloc sequence number */
472 /* exercise wrap-around */
473 #define PERL_COP_SEQMAX (U32_MAX-50)
475 #define PERL_COP_SEQMAX 0
477 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
478 #undef PERL_COP_SEQMAX
480 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
481 PERLVAR(I, origalen, U32)
482 PERLVAR(I, origenviron, char **)
483 #ifdef PERL_USES_PL_PIDSTATUS
484 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
486 PERLVAR(I, osname, char *) /* operating system */
488 PERLVAR(I, sighandlerp, Sighandler_t)
490 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
492 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
494 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
496 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
499 =for apidoc Amn|SV|PL_sv_undef
500 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
502 =for apidoc Amn|SV|PL_sv_no
503 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
506 =for apidoc Amn|SV|PL_sv_yes
507 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
513 PERLVAR(I, sv_undef, SV)
514 PERLVAR(I, sv_no, SV)
515 PERLVAR(I, sv_yes, SV)
517 PERLVAR(I, subname, SV *) /* name of current subroutine */
519 PERLVAR(I, subline, I32) /* line this subroutine began on */
520 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
522 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
523 PERLVAR(I, padix, I32) /* max used index in current "register" pad */
525 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
527 PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
529 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
531 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
532 PERLVARI(I, breakable_sub_gen, U32, 0)
534 #ifdef USE_LOCALE_COLLATE
535 PERLVAR(I, collation_name, char *) /* Name of current collation */
536 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
537 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
538 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
539 PERLVARI(I, collation_standard, bool, TRUE)
540 /* Assume simple collation */
541 #endif /* USE_LOCALE_COLLATE */
544 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
549 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
553 #ifdef USE_LOCALE_NUMERIC
555 PERLVARI(I, numeric_standard, bool, TRUE)
556 /* Assume simple numerics */
557 PERLVARI(I, numeric_local, bool, TRUE)
558 /* Assume local numerics */
559 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
560 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
562 #endif /* !USE_LOCALE_NUMERIC */
564 /* Unicode inversion lists */
565 PERLVAR(I, ASCII, SV *)
566 PERLVAR(I, Latin1, SV *)
567 PERLVAR(I, AboveLatin1, SV *)
569 PERLVAR(I, L1Cased, SV *)
571 PERLVAR(I, NonL1NonFinalFold, SV *)
572 PERLVAR(I, HasMultiCharFold, SV *)
574 /* utf8 character class swashes */
575 PERLVAR(I, utf8_mark, SV *)
576 PERLVAR(I, utf8_X_regular_begin, SV *)
577 PERLVAR(I, utf8_X_extend, SV *)
578 PERLVAR(I, utf8_toupper, SV *)
579 PERLVAR(I, utf8_totitle, SV *)
580 PERLVAR(I, utf8_tolower, SV *)
581 PERLVAR(I, utf8_tofold, SV *)
582 PERLVAR(I, utf8_charname_begin, SV *)
583 PERLVAR(I, utf8_charname_continue, SV *)
585 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
586 PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
587 PERLVARA(I, L1Posix_ptrs, POSIX_CC_COUNT, SV *)
588 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
590 PERLVAR(I, last_swash_hv, HV *)
591 PERLVAR(I, last_swash_tmps, U8 *)
592 PERLVAR(I, last_swash_slen, STRLEN)
593 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
594 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
597 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
600 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
601 PERLVAR(I, srand_called, bool)
602 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
604 PERLVAR(I, parser, yy_parser *) /* current parser state */
606 /* Array of signal handlers, indexed by signal number, through which the C
607 signal handler dispatches. */
608 PERLVAR(I, psig_ptr, SV **)
609 /* Array of names of signals, indexed by signal number, for (re)use as the first
610 argument to a signal handler. Only one block of memory is allocated for
611 both psig_name and psig_ptr. */
612 PERLVAR(I, psig_name, SV **)
614 #if defined(PERL_IMPLICIT_SYS)
615 PERLVAR(I, Mem, struct IPerlMem *)
616 PERLVAR(I, MemShared, struct IPerlMem *)
617 PERLVAR(I, MemParse, struct IPerlMem *)
618 PERLVAR(I, Env, struct IPerlEnv *)
619 PERLVAR(I, StdIO, struct IPerlStdIO *)
620 PERLVAR(I, LIO, struct IPerlLIO *)
621 PERLVAR(I, Dir, struct IPerlDir *)
622 PERLVAR(I, Sock, struct IPerlSock *)
623 PERLVAR(I, Proc, struct IPerlProc *)
626 PERLVAR(I, ptr_table, PTR_TBL_t *)
627 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
629 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
632 #if defined(USE_ITHREADS)
633 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
635 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
636 values in op_pmoffset of pmop.
637 Entry 0 is an SV whose PV is a
638 "packed" list of IVs listing
639 the now-free slots in the array */
640 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
641 PERLVARI(I, stashpadmax, PADOFFSET, 64)
642 PERLVARI(I, stashpadix, PADOFFSET, 0)
645 #ifdef USE_REENTRANT_API
646 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
649 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
650 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
653 PERLVARI(I, perlio, PerlIOl *, NULL)
654 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
655 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
658 PERLVARI(I, encoding, SV *, NULL) /* character encoding */
660 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
662 PERLVAR(I, utf8_idstart, SV *)
663 PERLVAR(I, utf8_idcont, SV *)
664 PERLVAR(I, utf8_xidstart, SV *)
665 PERLVAR(I, utf8_perl_idstart, SV *)
666 PERLVAR(I, utf8_xidcont, SV *)
668 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
670 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
671 PERLVARI(I, unitcheckav_save, AV *, NULL)
672 /* save UNITCHECK{}s when compiling */
674 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
676 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
678 /* Hooks to shared SVs and locks. */
679 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
680 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
682 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
684 /* This reference ensures that the mathoms are linked with perl */
685 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
687 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
689 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
691 /* Can shared object be destroyed */
692 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
695 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
698 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
700 /* Register of known Method Resolution Orders.
701 What this actually points to is an implementation detail (it may change to
702 a structure incorporating a reference count - use mro_get_from_name to
703 retrieve a C<struct mro_alg *> */
704 PERLVAR(I, registered_mros, HV *)
706 /* Compile-time block start/end hooks */
707 PERLVAR(I, blockhooks, AV *)
709 /* Everything that folds to a given character, for case insensitivity regex
711 PERLVARI(I, utf8_foldclosures, HV *, NULL)
713 /* List of characters that participate in folds (except marks, etc in
714 * multi-char folds) */
715 PERLVARI(I, utf8_foldable, SV *, NULL)
717 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
719 /* Hook for File::Glob */
720 PERLVARI(I, globhook, globhook_t, NULL)
722 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
724 /* The last unconditional member of the interpreter structure when 5.10.0 was
725 released. The offset of the end of this is baked into a global variable in
726 any shared perl library which will allow a sanity test in future perl
728 #define PERL_LAST_5_16_0_INTERP_MEMBER Ireentrant_retint
730 #ifdef PERL_IMPLICIT_CONTEXT
731 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
732 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
733 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
734 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
738 #ifdef PERL_TRACK_MEMPOOL
739 /* For use with the memory debugging code in util.c */
740 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
743 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
744 /* File descriptor to talk to the child which dumps scalars. */
745 PERLVARI(I, dumper_fd, int, -1)
749 PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
750 /* (MAD = Misc Attribute Decoration) */
751 PERLVARI(I, xmlfp, PerlIO *, NULL)
754 #ifdef DEBUG_LEAKING_SCALARS
755 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
758 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
759 * above on where there are gaps which currently will be structure padding. */
761 /* Within a stable branch, new variables must be added to the very end, before
762 * this comment, for binary compatibility (the offsets of the old members must
764 * (Don't forget to add your variable also to perl_clone()!)
765 * XSUB.h provides wrapper functions via perlapi.h that make this
766 * irrelevant, but not all code may be expected to #include XSUB.h.