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.
12 =head1 Per-Interpreter Variables
15 /* These variables are per-interpreter in threaded/multiplicity builds,
18 * Don't forget to re-run regen/embed.pl to propagate changes! */
20 /* New variables must be added to the very end for binary compatibility.
21 * XSUB.h provides wrapper functions via perlapi.h that make this
22 * irrelevant, but not all code may be expected to #include XSUB.h. */
24 /* Don't forget to add your variable also to perl_clone()! */
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 */
167 PERLVARI(I, rehash_seed_set, bool, FALSE) /* 582 hash initialized? */
169 PERLVARA(I, colors,6, char *) /* from regcomp.c */
172 =for apidoc Amn|peep_t|PL_peepp
174 Pointer to the per-subroutine peephole optimiser. This is a function
175 that gets called at the end of compilation of a Perl subroutine (or
176 equivalently independent piece of Perl code) to perform fixups of
177 some ops and to perform small-scale optimisations. The function is
178 called once for each subroutine that is compiled, and is passed, as sole
179 parameter, a pointer to the op that is the entry point to the subroutine.
180 It modifies the op tree in place.
182 The peephole optimiser should never be completely replaced. Rather,
183 add code to it by wrapping the existing optimiser. The basic way to do
184 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
185 If the new code wishes to operate on ops throughout the subroutine's
186 structure, rather than just at the top level, it is likely to be more
187 convenient to wrap the L</PL_rpeepp> hook.
192 PERLVARI(I, peepp, peep_t, Perl_peep)
195 =for apidoc Amn|peep_t|PL_rpeepp
197 Pointer to the recursive peephole optimiser. This is a function
198 that gets called at the end of compilation of a Perl subroutine (or
199 equivalently independent piece of Perl code) to perform fixups of some
200 ops and to perform small-scale optimisations. The function is called
201 once for each chain of ops linked through their C<op_next> fields;
202 it is recursively called to handle each side chain. It is passed, as
203 sole parameter, a pointer to the op that is at the head of the chain.
204 It modifies the op tree in place.
206 The peephole optimiser should never be completely replaced. Rather,
207 add code to it by wrapping the existing optimiser. The basic way to do
208 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
209 If the new code wishes to operate only on ops at a subroutine's top level,
210 rather than throughout the structure, it is likely to be more convenient
211 to wrap the L</PL_peepp> hook.
216 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
219 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
221 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.
222 This allows extensions to free any extra attribute they have locally attached to an OP.
223 It is also assured to first fire for the parent OP and then for its kids.
225 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.
230 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
233 PERLVARI(I, reginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
234 PERLVARI(I, watchaddr, char **, 0)
235 PERLVAR(I, watchok, char *)
237 /* the currently active slab in a chain of slabs of regmatch states,
238 * and the currently active state within that slab */
240 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
241 PERLVAR(I, regmatch_state, regmatch_state *)
243 /* Put anything new that is pointer aligned here. */
245 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
246 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
247 PERLVAR(I, colorset, bool) /* from regcomp.c */
248 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
249 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
250 PERLVAR(I, tainting, bool) /* doing taint checks */
252 /* This value may be set when embedding for full cleanup */
253 /* 0=none, 1=full, 2=full with checks */
254 /* mod_perl is special, and also assigns a meaning -1 */
255 PERLVARI(I, perl_destruct_level, signed char, 0)
257 /* current phase the interpreter is in */
258 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
260 PERLVAR(I, perldb, U32)
262 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
264 /* pseudo environmental stuff */
265 PERLVAR(I, origargc, int)
266 PERLVAR(I, origargv, char **)
267 PERLVAR(I, envgv, GV *)
268 PERLVAR(I, incgv, GV *)
269 PERLVAR(I, hintgv, GV *)
270 PERLVAR(I, origfilename, char *)
271 PERLVAR(I, diehook, SV *)
272 PERLVAR(I, warnhook, SV *)
275 PERLVAR(I, patchlevel, SV *)
276 PERLVAR(I, apiversion, SV *)
277 PERLVAR(I, localpatches, const char * const *)
278 PERLVARI(I, splitstr, const char *, " ")
280 PERLVAR(I, minus_c, bool)
281 PERLVAR(I, minus_n, bool)
282 PERLVAR(I, minus_p, bool)
283 PERLVAR(I, minus_l, bool)
284 PERLVAR(I, minus_a, bool)
285 PERLVAR(I, minus_F, bool)
286 PERLVAR(I, doswitches, bool)
287 PERLVAR(I, minus_E, bool)
291 =for apidoc mn|bool|PL_dowarn
293 The C variable which corresponds to Perl's $^W warning variable.
298 PERLVAR(I, dowarn, U8)
299 PERLVAR(I, sawampersand, bool) /* must save all match strings */
300 PERLVAR(I, unsafe, bool)
301 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
302 PERLVAR(I, srand_called, bool)
303 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
304 /* Space for a U16 */
305 PERLVAR(I, inplace, char *)
306 PERLVAR(I, e_script, SV *)
308 /* magical thingies */
309 PERLVAR(I, basetime, Time_t) /* $^T */
310 PERLVAR(I, formfeed, SV *) /* $^L */
313 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
314 /* top fd to pass to subprocesses */
315 PERLVAR(I, statusvalue, I32) /* $? */
317 PERLVAR(I, statusvalue_vms, U32)
319 PERLVAR(I, statusvalue_posix, I32)
322 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
323 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
325 /* shortcuts to various I/O objects */
326 PERLVAR(I, stdingv, GV *) /* *STDIN */
327 PERLVAR(I, stderrgv, GV *) /* *STDERR */
328 PERLVAR(I, defgv, GV *)
329 PERLVAR(I, argvgv, GV *) /* *ARGV */
330 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
331 PERLVAR(I, argvout_stack, AV *)
333 /* shortcuts to regexp stuff */
334 PERLVAR(I, replgv, GV *) /* *^R */
336 /* shortcuts to misc objects */
337 PERLVAR(I, errgv, GV *) /* *@ */
339 /* shortcuts to debugging objects */
340 PERLVAR(I, DBgv, GV *) /* *DB::DB */
341 PERLVAR(I, DBline, GV *) /* *DB::line */
344 =for apidoc mn|GV *|PL_DBsub
345 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
346 the SV which holds the name of the sub being debugged. This is the C
347 variable which corresponds to Perl's $DB::sub variable. See
350 =for apidoc mn|SV *|PL_DBsingle
351 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
352 boolean which indicates whether subs are being single-stepped.
353 Single-stepping is automatically turned on after every step. This is the C
354 variable which corresponds to Perl's $DB::single variable. See
357 =for apidoc mn|SV *|PL_DBtrace
358 Trace variable used when Perl is run in debugging mode, with the B<-d>
359 switch. This is the C variable which corresponds to Perl's $DB::trace
360 variable. See C<PL_DBsingle>.
365 PERLVAR(I, DBsub, GV *) /* *DB::sub */
366 PERLVAR(I, DBsingle, SV *) /* $DB::single */
367 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
368 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
369 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
372 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
373 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
374 PERLVAR(I, curstname, SV *) /* name of current package */
375 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
376 PERLVAR(I, endav, AV *) /* names of END subroutines */
377 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
378 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
379 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
380 PERLVAR(I, strtab, HV *) /* shared string table */
381 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
383 /* funky return mechanisms */
384 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
386 /* memory management */
387 PERLVAR(I, sv_count, I32) /* how many SV* are currently allocated */
388 PERLVAR(I, sv_objcount, I32) /* how many objects are currently allocated */
389 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
390 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
392 /* subprocess state */
393 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
396 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
398 /* current interpreter roots */
399 PERLVAR(I, main_cv, CV *)
400 PERLVAR(I, main_root, OP *)
401 PERLVAR(I, main_start, OP *)
402 PERLVAR(I, eval_root, OP *)
403 PERLVAR(I, eval_start, OP *)
405 /* runtime control stuff */
406 PERLVARI(I, curcopdb, COP *, NULL)
408 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
409 PERLVAR(I, lastfd, int) /* what to preserve mode on */
410 PERLVAR(I, oldname, char *) /* what to preserve mode on */
411 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
412 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
413 /* Elements in this array have ';' appended and are injected as a single line
414 into the tokeniser. You can't put any (literal) newlines into any program
415 you stuff in into this array, as the point where it's injected is expecting
416 a single physical line. */
417 PERLVAR(I, preambleav, AV *)
418 PERLVAR(I, mess_sv, SV *)
419 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
420 /* statics moved here for shared library purposes */
421 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
422 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
423 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
424 PERLVARI(I, laststype, U16, OP_STAT)
425 PERLVARI(I, laststatval, int, -1)
427 /* interpreter atexit processing */
428 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
429 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
430 /* list of exit functions */
433 =for apidoc Amn|HV*|PL_modglobal
435 C<PL_modglobal> is a general purpose, interpreter global HV for use by
436 extensions that need to keep information on a per-interpreter basis.
437 In a pinch, it can also be used as a symbol table for extensions
438 to share data among each other. It is a good idea to use keys
439 prefixed by the package name of the extension that owns the data.
444 PERLVAR(I, modglobal, HV *) /* per-interp module data */
446 /* these used to be in global before 5.004_68 */
447 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
449 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
451 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
452 PERLVAR(I, comppad, AV *) /* storage for lexically scoped temporaries */
453 PERLVAR(I, comppad_name, AV *) /* variable names for "my" variables */
454 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
455 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
457 #ifdef HAVE_INTERP_INTERN
458 PERLVAR(I, sys_intern, struct interp_intern)
459 /* platform internals */
462 /* more statics moved here */
463 PERLVAR(I, DBcv, CV *) /* from perl.c */
464 PERLVARI(I, generation, int, 100) /* from op.c */
466 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
467 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
468 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
469 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
471 PERLVAR(I, uid, Uid_t) /* current real user id */
472 PERLVAR(I, euid, Uid_t) /* current effective user id */
473 PERLVAR(I, gid, Gid_t) /* current real group id */
474 PERLVAR(I, egid, Gid_t) /* current effective group id */
475 PERLVARI(I, an, U32, 0) /* malloc sequence number */
478 /* exercise wrap-around */
479 #define PERL_COP_SEQMAX (U32_MAX-50)
481 #define PERL_COP_SEQMAX 0
483 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
484 #undef PERL_COP_SEQMAX
486 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
487 PERLVAR(I, origalen, U32)
488 PERLVAR(I, origenviron, char **)
489 #ifdef PERL_USES_PL_PIDSTATUS
490 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
492 PERLVAR(I, osname, char *) /* operating system */
494 PERLVAR(I, sighandlerp, Sighandler_t)
496 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
498 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
500 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
502 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
505 =for apidoc Amn|SV|PL_sv_undef
506 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
508 =for apidoc Amn|SV|PL_sv_no
509 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
512 =for apidoc Amn|SV|PL_sv_yes
513 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
519 PERLVAR(I, sv_undef, SV)
520 PERLVAR(I, sv_no, SV)
521 PERLVAR(I, sv_yes, SV)
523 PERLVAR(I, subname, SV *) /* name of current subroutine */
525 PERLVAR(I, subline, I32) /* line this subroutine began on */
526 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
528 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
529 PERLVAR(I, padix, I32) /* max used index in current "register" pad */
531 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
533 PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
535 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
537 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
538 PERLVARI(I, breakable_sub_gen, U32, 0)
540 PERLVARI(I, amagic_generation, long, 0)
542 #ifdef USE_LOCALE_COLLATE
543 PERLVAR(I, collation_name, char *) /* Name of current collation */
544 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
545 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
546 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
547 PERLVARI(I, collation_standard, bool, TRUE)
548 /* Assume simple collation */
549 #endif /* USE_LOCALE_COLLATE */
552 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
557 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
561 #ifdef USE_LOCALE_NUMERIC
563 PERLVARI(I, numeric_standard, bool, TRUE)
564 /* Assume simple numerics */
565 PERLVARI(I, numeric_local, bool, TRUE)
566 /* Assume local numerics */
567 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
568 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
570 #endif /* !USE_LOCALE_NUMERIC */
572 /* utf8 character classes */
573 PERLVAR(I, utf8_alnum, SV *)
574 PERLVAR(I, utf8_ascii, SV *)
575 PERLVAR(I, utf8_alpha, SV *)
576 PERLVAR(I, utf8_space, SV *)
577 PERLVAR(I, utf8_perl_space, SV *)
578 PERLVAR(I, utf8_perl_word, SV *)
579 PERLVAR(I, utf8_posix_digit, SV *)
580 PERLVAR(I, utf8_cntrl, SV *)
581 PERLVAR(I, utf8_graph, SV *)
582 PERLVAR(I, utf8_digit, SV *)
583 PERLVAR(I, utf8_upper, SV *)
584 PERLVAR(I, utf8_lower, SV *)
585 PERLVAR(I, utf8_print, SV *)
586 PERLVAR(I, utf8_punct, SV *)
587 PERLVAR(I, utf8_xdigit, SV *)
588 PERLVAR(I, utf8_mark, SV *)
589 PERLVAR(I, utf8_X_begin, SV *)
590 PERLVAR(I, utf8_X_extend, SV *)
591 PERLVAR(I, utf8_X_prepend, SV *)
592 PERLVAR(I, utf8_X_non_hangul, SV *)
593 PERLVAR(I, utf8_X_L, SV *)
594 PERLVAR(I, utf8_X_LV, SV *)
595 PERLVAR(I, utf8_X_LVT, SV *)
596 PERLVAR(I, utf8_X_T, SV *)
597 PERLVAR(I, utf8_X_V, SV *)
598 PERLVAR(I, utf8_X_LV_LVT_V, SV *)
599 PERLVAR(I, utf8_toupper, SV *)
600 PERLVAR(I, utf8_totitle, SV *)
601 PERLVAR(I, utf8_tolower, SV *)
602 PERLVAR(I, utf8_tofold, SV *)
603 PERLVAR(I, last_swash_hv, HV *)
604 PERLVAR(I, last_swash_tmps, U8 *)
605 PERLVAR(I, last_swash_slen, STRLEN)
606 PERLVARA(I, last_swash_key,10, U8)
607 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-10 */
610 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
613 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
615 PERLVARI(I, glob_index, int, 0)
618 PERLVAR(I, parser, yy_parser *) /* current parser state */
620 /* Array of signal handlers, indexed by signal number, through which the C
621 signal handler dispatches. */
622 PERLVAR(I, psig_ptr, SV **)
623 /* Array of names of signals, indexed by signal number, for (re)use as the first
624 argument to a signal handler. Only one block of memory is allocated for
625 both psig_name and psig_ptr. */
626 PERLVAR(I, psig_name, SV **)
628 #if defined(PERL_IMPLICIT_SYS)
629 PERLVAR(I, Mem, struct IPerlMem *)
630 PERLVAR(I, MemShared, struct IPerlMem *)
631 PERLVAR(I, MemParse, struct IPerlMem *)
632 PERLVAR(I, Env, struct IPerlEnv *)
633 PERLVAR(I, StdIO, struct IPerlStdIO *)
634 PERLVAR(I, LIO, struct IPerlLIO *)
635 PERLVAR(I, Dir, struct IPerlDir *)
636 PERLVAR(I, Sock, struct IPerlSock *)
637 PERLVAR(I, Proc, struct IPerlProc *)
640 PERLVAR(I, ptr_table, PTR_TBL_t *)
641 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
643 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
646 #if defined(USE_ITHREADS)
647 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
649 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
650 values in op_pmoffset of pmop.
651 Entry 0 is an SV whose PV is a
652 "packed" list of IVs listing
653 the now-free slots in the array */
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, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
673 PERLVAR(I, utf8_idstart, SV *)
674 PERLVAR(I, utf8_idcont, SV *)
675 PERLVAR(I, utf8_xidstart, 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 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
688 /* Hooks to shared SVs and locks. */
689 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
690 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
692 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
694 /* This reference ensures that the mathoms are linked with perl */
695 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
697 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
699 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
701 /* Can shared object be destroyed */
702 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
705 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
708 PERLVARI(I, hash_seed, UV, 0) /* Hash initializer */
710 PERLVARI(I, rehash_seed, UV, 0) /* 582 hash initializer */
712 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
714 /* Register of known Method Resolution Orders.
715 What this actually points to is an implementation detail (it may change to
716 a structure incorporating a reference count - use mro_get_from_name to
717 retrieve a C<struct mro_alg *> */
718 PERLVAR(I, registered_mros, HV *)
720 /* Compile-time block start/end hooks */
721 PERLVAR(I, blockhooks, AV *)
723 /* Everything that folds to a given character, for case insensitivity regex
725 PERLVARI(I, utf8_foldclosures, HV *, NULL)
727 /* List of characters that participate in folds (except marks, etc in
728 * multi-char folds) */
729 PERLVARI(I, utf8_foldable, SV *, NULL)
731 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
733 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
735 /* The last unconditional member of the interpreter structure when 5.10.0 was
736 released. The offset of the end of this is baked into a global variable in
737 any shared perl library which will allow a sanity test in future perl
739 #define PERL_LAST_5_16_0_INTERP_MEMBER Ireentrant_retint
741 #ifdef PERL_IMPLICIT_CONTEXT
742 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
743 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
744 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
745 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
749 #ifdef PERL_TRACK_MEMPOOL
750 /* For use with the memory debugging code in util.c */
751 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
754 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
755 /* File descriptor to talk to the child which dumps scalars. */
756 PERLVARI(I, dumper_fd, int, -1)
759 /* Stores the PPID */
760 #ifdef THREADS_HAVE_PIDS
761 PERLVARI(I, ppid, IV, 0)
765 PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
766 /* (MAD = Misc Attribute Decoration) */
767 PERLVARI(I, xmlfp, PerlIO *, NULL)
770 #ifdef PL_OP_SLAB_ALLOC
771 PERLVAR(I, OpPtr, I32 **)
772 PERLVARI(I, OpSpace, I32, 0)
773 PERLVAR(I, OpSlab, I32 *)
776 #ifdef PERL_DEBUG_READONLY_OPS
777 PERLVARI(I, slabs, I32**, NULL) /* Array of slabs that have been allocated */
778 PERLVARI(I, slab_count, U32, 0) /* Size of the array */
781 #ifdef DEBUG_LEAKING_SCALARS
782 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
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.