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.
30 * When building without MULTIPLICITY, these variables will be truly global.
32 * Important ones in the first cache line (if alignment is done right) */
34 PERLVAR(Istack_sp, SV **) /* top of the stack */
36 PERLVAR(Iopsave, OP *)
38 PERLVAR(Iop, OP *) /* currently executing op */
40 PERLVAR(Icurpad, SV **) /* active pad (lexicals+tmps) */
42 PERLVAR(Istack_base, SV **)
43 PERLVAR(Istack_max, SV **)
45 PERLVAR(Iscopestack, I32 *) /* scopes we've ENTERed */
46 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
47 present always, as -DDEUBGGING must be binary compatible with non. */
48 PERLVARI(Iscopestack_name, const char * *, NULL)
49 PERLVAR(Iscopestack_ix, I32)
50 PERLVAR(Iscopestack_max,I32)
52 PERLVAR(Isavestack, ANY *) /* items that need to be restored when
53 LEAVEing scopes we've ENTERed */
54 PERLVAR(Isavestack_ix, I32)
55 PERLVAR(Isavestack_max, I32)
57 PERLVAR(Itmps_stack, SV **) /* mortals we've made */
58 PERLVARI(Itmps_ix, I32, -1)
59 PERLVARI(Itmps_floor, I32, -1)
60 PERLVAR(Itmps_max, I32)
61 PERLVAR(Imodcount, I32) /* how much op_lvalue()ification in
64 PERLVAR(Imarkstack, I32 *) /* stack_sp locations we're
66 PERLVAR(Imarkstack_ptr, I32 *)
67 PERLVAR(Imarkstack_max, I32 *)
69 PERLVAR(ISv, SV *) /* used to hold temporary values */
70 PERLVAR(IXpv, XPV *) /* used to hold temporary values */
73 =for apidoc Amn|STRLEN|PL_na
75 A convenience variable which is typically used with C<SvPV> when one
76 doesn't care about the length of the string. It is usually more efficient
77 to either declare a local variable and use that instead or to use the
83 PERLVAR(Ina, STRLEN) /* for use in SvPV when length is
87 PERLVAR(Istatbuf, Stat_t)
88 PERLVAR(Istatcache, Stat_t) /* _ */
89 PERLVAR(Istatgv, GV *)
90 PERLVARI(Istatname, SV *, NULL)
93 PERLVAR(Itimesbuf, struct tms)
96 /* Fields used by magic variables such as $@, $/ and so on */
97 PERLVAR(Icurpm, PMOP *) /* what to do \ interps in REs from */
100 =for apidoc mn|SV*|PL_rs
102 The input record separator - C<$/> in Perl space.
104 =for apidoc mn|GV*|PL_last_in_gv
106 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
108 =for apidoc mn|GV*|PL_ofsgv
110 The glob containing the output field separator - C<*,> in Perl space.
115 PERLVAR(Irs, SV *) /* input record separator $/ */
116 PERLVAR(Ilast_in_gv, GV *) /* GV used in last <FH> */
117 PERLVAR(Iofsgv, GV *) /* GV of output field separator *, */
118 PERLVAR(Idefoutgv, GV *) /* default FH for output */
119 PERLVARI(Ichopset, const char *, " \n-") /* $: */
120 PERLVAR(Iformtarget, SV *)
121 PERLVAR(Ibodytarget, SV *)
122 PERLVAR(Itoptarget, SV *)
125 PERLVAR(Idefstash, HV *) /* main symbol table */
126 PERLVAR(Icurstash, HV *) /* symbol table for current package */
128 PERLVAR(Irestartop, OP *) /* propagating an error from croak? */
129 PERLVAR(Irestartjmpenv, JMPENV *) /* target frame for longjmp in die */
130 PERLVAR(Icurcop, COP *)
131 PERLVAR(Icurstack, AV *) /* THE STACK */
132 PERLVAR(Icurstackinfo, PERL_SI *) /* current stack + context */
133 PERLVAR(Imainstack, AV *) /* the stack when nothing funny is
136 PERLVAR(Itop_env, JMPENV *) /* ptr to current sigjmp environment */
137 PERLVAR(Istart_env, JMPENV) /* empty startup sigjmp environment */
138 PERLVARI(Ierrors, SV *, NULL) /* outstanding queued errors */
140 /* statics "owned" by various functions */
141 PERLVAR(Ihv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
143 PERLVAR(Ilastgotoprobe, OP*) /* from pp_ctl.c */
146 PERLVAR(Isortcop, OP *) /* user defined sort routine */
147 PERLVAR(Isortstash, HV *) /* which is in some package or other */
148 PERLVAR(Ifirstgv, GV *) /* $a */
149 PERLVAR(Isecondgv, GV *) /* $b */
152 PERLVAR(Iefloatbuf, char *)
153 PERLVAR(Iefloatsize, STRLEN)
157 PERLVAR(Iscreamfirst, I32 *)
158 PERLVAR(Iscreamnext, I32 *)
159 PERLVAR(Ilastscream, SV *)
161 PERLVAR(Ireg_state, struct re_save_state)
163 PERLVAR(Iregdummy, regnode) /* from regcomp.c */
165 PERLVARI(Idumpindent, U16, 4) /* number of blanks per dump
169 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
170 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
172 PERLVARA(Icolors,6, char *) /* from regcomp.c */
175 =for apidoc Amn|peep_t|PL_peepp
177 Pointer to the per-subroutine peephole optimiser. This is a function
178 that gets called at the end of compilation of a Perl subroutine (or
179 equivalently independent piece of Perl code) to perform fixups of
180 some ops and to perform small-scale optimisations. The function is
181 called once for each subroutine that is compiled, and is passed, as sole
182 parameter, a pointer to the op that is the entry point to the subroutine.
183 It modifies the op tree in place.
185 The peephole optimiser should never be completely replaced. Rather,
186 add code to it by wrapping the existing optimiser. The basic way to do
187 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
188 If the new code wishes to operate on ops throughout the subroutine's
189 structure, rather than just at the top level, it is likely to be more
190 convenient to wrap the L</PL_rpeepp> hook.
195 PERLVARI(Ipeepp, peep_t, Perl_peep)
198 =for apidoc Amn|peep_t|PL_rpeepp
200 Pointer to the recursive peephole optimiser. This is a function
201 that gets called at the end of compilation of a Perl subroutine (or
202 equivalently independent piece of Perl code) to perform fixups of some
203 ops and to perform small-scale optimisations. The function is called
204 once for each chain of ops linked through their C<op_next> fields;
205 it is recursively called to handle each side chain. It is passed, as
206 sole parameter, a pointer to the op that is at the head of the chain.
207 It modifies the op tree in place.
209 The peephole optimiser should never be completely replaced. Rather,
210 add code to it by wrapping the existing optimiser. The basic way to do
211 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
212 If the new code wishes to operate only on ops at a subroutine's top level,
213 rather than throughout the structure, it is likely to be more convenient
214 to wrap the L</PL_peepp> hook.
219 PERLVARI(Irpeepp, peep_t, Perl_rpeep)
222 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
224 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.
225 This allows extensions to free any extra attribute they have locally attached to an OP.
226 It is also assured to first fire for the parent OP and then for its kids.
228 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.
233 PERLVARI(Iopfreehook, Perl_ophook_t, 0) /* op_free() hook */
235 PERLVARI(Imaxscream, I32, -1)
236 PERLVARI(Ireginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
237 PERLVARI(Iwatchaddr, char **, 0)
238 PERLVAR(Iwatchok, char *)
240 /* the currently active slab in a chain of slabs of regmatch states,
241 * and the currently active state within that slab */
243 PERLVARI(Iregmatch_slab, regmatch_slab *, NULL)
244 PERLVAR(Iregmatch_state, regmatch_state *)
246 /* Put anything new that is pointer aligned here. */
248 PERLVAR(Idelaymagic, U16) /* ($<,$>) = ... */
249 PERLVAR(Ilocalizing, U8) /* are we processing a local() list? */
250 PERLVAR(Icolorset, bool) /* from regcomp.c */
251 PERLVAR(Iin_eval, U8) /* trap "fatal" errors? */
252 PERLVAR(Itainted, bool) /* using variables controlled by $< */
254 /* current phase the interpreter is in */
255 PERLVARI(Iphase, enum perl_phase, PERL_PHASE_CONSTRUCT)
257 /* This value may be set when embedding for full cleanup */
258 /* 0=none, 1=full, 2=full with checks */
259 /* mod_perl is special, and also assigns a meaning -1 */
260 PERLVARI(Iperl_destruct_level, signed char, 0)
262 PERLVAR(Iperldb, U32)
264 /* pseudo environmental stuff */
265 PERLVAR(Iorigargc, int)
266 PERLVAR(Iorigargv, char **)
267 PERLVAR(Ienvgv, GV *)
268 PERLVAR(Iincgv, GV *)
269 PERLVAR(Ihintgv, GV *)
270 PERLVAR(Iorigfilename, char *)
271 PERLVAR(Idiehook, SV *)
272 PERLVAR(Iwarnhook, SV *)
275 PERLVAR(Ipatchlevel, SV *)
276 PERLVAR(Iapiversion, SV *)
277 PERLVAR(Ilocalpatches, const char * const *)
278 PERLVARI(Isplitstr, const char *, " ")
280 PERLVAR(Iminus_c, bool)
281 PERLVAR(Iminus_n, bool)
282 PERLVAR(Iminus_p, bool)
283 PERLVAR(Iminus_l, bool)
284 PERLVAR(Iminus_a, bool)
285 PERLVAR(Iminus_F, bool)
286 PERLVAR(Idoswitches, bool)
287 PERLVAR(Iminus_E, bool)
291 =for apidoc mn|bool|PL_dowarn
293 The C variable which corresponds to Perl's $^W warning variable.
300 PERLVAR(Isawampersand, bool) /* must save all match strings */
301 PERLVAR(Iunsafe, bool)
302 PERLVAR(Iexit_flags, U8) /* was exit() unexpected, etc. */
303 PERLVAR(Isrand_called, bool)
304 /* Part of internal state, but makes the 16th 1 byte variable in a row. */
305 PERLVAR(Itainting, bool) /* doing taint checks */
306 PERLVARI(Iin_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
307 PERLVAR(Iinplace, char *)
308 PERLVAR(Ie_script, SV *)
310 /* magical thingies */
311 PERLVAR(Ibasetime, Time_t) /* $^T */
312 PERLVAR(Iformfeed, SV *) /* $^L */
315 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
316 /* top fd to pass to subprocesses */
317 PERLVAR(Istatusvalue, I32) /* $? */
319 PERLVAR(Istatusvalue_vms,U32)
321 PERLVAR(Istatusvalue_posix,I32)
324 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
325 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
327 /* shortcuts to various I/O objects */
328 PERLVAR(Istdingv, GV *) /* *STDIN */
329 PERLVAR(Istderrgv, GV *) /* *STDERR */
330 PERLVAR(Idefgv, GV *)
331 PERLVAR(Iargvgv, GV *) /* *ARGV */
332 PERLVAR(Iargvoutgv, GV *) /* *ARGVOUT */
333 PERLVAR(Iargvout_stack, AV *)
335 /* shortcuts to regexp stuff */
336 PERLVAR(Ireplgv, GV *) /* *^R */
338 /* shortcuts to misc objects */
339 PERLVAR(Ierrgv, GV *) /* *@ */
341 /* shortcuts to debugging objects */
342 PERLVAR(IDBgv, GV *) /* *DB::DB */
343 PERLVAR(IDBline, GV *) /* *DB::line */
346 =for apidoc mn|GV *|PL_DBsub
347 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
348 the SV which holds the name of the sub being debugged. This is the C
349 variable which corresponds to Perl's $DB::sub variable. See
352 =for apidoc mn|SV *|PL_DBsingle
353 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
354 boolean which indicates whether subs are being single-stepped.
355 Single-stepping is automatically turned on after every step. This is the C
356 variable which corresponds to Perl's $DB::single variable. See
359 =for apidoc mn|SV *|PL_DBtrace
360 Trace variable used when Perl is run in debugging mode, with the B<-d>
361 switch. This is the C variable which corresponds to Perl's $DB::trace
362 variable. See C<PL_DBsingle>.
367 PERLVAR(IDBsub, GV *) /* *DB::sub */
368 PERLVAR(IDBsingle, SV *) /* $DB::single */
369 PERLVAR(IDBtrace, SV *) /* $DB::trace */
370 PERLVAR(IDBsignal, SV *) /* $DB::signal */
371 PERLVAR(Idbargs, AV *) /* args to call listed by caller function */
374 PERLVAR(Idebstash, HV *) /* symbol table for perldb package */
375 PERLVAR(Iglobalstash, HV *) /* global keyword overrides imported here */
376 PERLVAR(Icurstname, SV *) /* name of current package */
377 PERLVAR(Ibeginav, AV *) /* names of BEGIN subroutines */
378 PERLVAR(Iendav, AV *) /* names of END subroutines */
379 PERLVAR(Iunitcheckav, AV *) /* names of UNITCHECK subroutines */
380 PERLVAR(Icheckav, AV *) /* names of CHECK subroutines */
381 PERLVAR(Iinitav, AV *) /* names of INIT subroutines */
382 PERLVAR(Istrtab, HV *) /* shared string table */
383 PERLVARI(Isub_generation,U32,1) /* incr to invalidate method cache */
385 /* funky return mechanisms */
386 PERLVAR(Iforkprocess, int) /* so do_open |- can return proc# */
388 /* memory management */
389 PERLVAR(Isv_count, I32) /* how many SV* are currently allocated */
390 PERLVAR(Isv_objcount, I32) /* how many objects are currently allocated */
391 PERLVAR(Isv_root, SV*) /* storage for SVs belonging to interp */
392 PERLVAR(Isv_arenaroot, SV*) /* list of areas for garbage collection */
394 /* subprocess state */
395 PERLVAR(Ifdpid, AV *) /* keep fd-to-pid mappings for my_popen */
398 PERLVARI(Iop_mask, char *, NULL) /* masked operations for safe evals */
400 /* current interpreter roots */
401 PERLVAR(Imain_cv, CV *)
402 PERLVAR(Imain_root, OP *)
403 PERLVAR(Imain_start, OP *)
404 PERLVAR(Ieval_root, OP *)
405 PERLVAR(Ieval_start, OP *)
407 /* runtime control stuff */
408 PERLVARI(Icurcopdb, COP *, NULL)
410 PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
411 PERLVAR(Ilastfd, int) /* what to preserve mode on */
412 PERLVAR(Ioldname, char *) /* what to preserve mode on */
413 PERLVAR(IArgv, const char **) /* stuff to free from do_aexec, vfork safe */
414 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
415 /* Elements in this array have ';' appended and are injected as a single line
416 into the tokeniser. You can't put any (literal) newlines into any program
417 you stuff in into this array, as the point where it's injected is expecting
418 a single physical line. */
419 PERLVAR(Ipreambleav, AV *)
420 PERLVAR(Imess_sv, SV *)
421 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
422 /* statics moved here for shared library purposes */
423 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
424 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
425 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
426 PERLVARI(Ilaststype, U16, OP_STAT)
427 PERLVARI(Ilaststatval, int, -1)
429 /* interpreter atexit processing */
430 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
431 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
432 /* list of exit functions */
435 =for apidoc Amn|HV*|PL_modglobal
437 C<PL_modglobal> is a general purpose, interpreter global HV for use by
438 extensions that need to keep information on a per-interpreter basis.
439 In a pinch, it can also be used as a symbol table for extensions
440 to share data among each other. It is a good idea to use keys
441 prefixed by the package name of the extension that owns the data.
446 PERLVAR(Imodglobal, HV *) /* per-interp module data */
448 /* these used to be in global before 5.004_68 */
449 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
451 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
453 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
454 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
455 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
456 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
457 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
459 #ifdef HAVE_INTERP_INTERN
460 PERLVAR(Isys_intern, struct interp_intern)
461 /* platform internals */
464 /* more statics moved here */
465 PERLVAR(IDBcv, CV *) /* from perl.c */
466 PERLVARI(Igeneration, int, 100) /* from op.c */
468 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
469 PERLVARI(Iin_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
470 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
471 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
473 PERLVAR(Iuid, Uid_t) /* current real user id */
474 PERLVAR(Ieuid, Uid_t) /* current effective user id */
475 PERLVAR(Igid, Gid_t) /* current real group id */
476 PERLVAR(Iegid, Gid_t) /* current effective group id */
477 PERLVARI(Ian, U32, 0) /* malloc sequence number */
478 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
479 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
480 PERLVAR(Iorigalen, U32)
481 PERLVAR(Iorigenviron, char **)
482 #ifdef PERL_USES_PL_PIDSTATUS
483 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
485 PERLVAR(Iosname, char *) /* operating system */
487 PERLVAR(Isighandlerp, Sighandler_t)
489 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
491 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
493 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
495 PERLVARI(Irunops, runops_proc_t, RUNOPS_DEFAULT)
498 =for apidoc Amn|SV|PL_sv_undef
499 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
501 =for apidoc Amn|SV|PL_sv_no
502 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
505 =for apidoc Amn|SV|PL_sv_yes
506 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
512 PERLVAR(Isv_undef, SV)
516 PERLVAR(Isubname, SV *) /* name of current subroutine */
518 PERLVAR(Isubline, I32) /* line this subroutine began on */
519 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
521 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
522 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
524 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
526 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
528 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
530 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
531 PERLVARI(Ibreakable_sub_gen, U32, 0)
533 PERLVARI(Iamagic_generation, long, 0)
535 #ifdef USE_LOCALE_COLLATE
536 PERLVAR(Icollation_name,char *) /* Name of current collation */
537 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
538 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
539 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
540 PERLVARI(Icollation_standard, bool, TRUE)
541 /* Assume simple collation */
542 #endif /* USE_LOCALE_COLLATE */
545 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
550 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
554 #ifdef USE_LOCALE_NUMERIC
556 PERLVARI(Inumeric_standard, bool, TRUE)
557 /* Assume simple numerics */
558 PERLVARI(Inumeric_local, bool, TRUE)
559 /* Assume local numerics */
560 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
561 #endif /* !USE_LOCALE_NUMERIC */
563 /* utf8 character classes */
564 PERLVAR(Iutf8_alnum, SV *)
565 PERLVAR(Iutf8_ascii, SV *)
566 PERLVAR(Iutf8_alpha, SV *)
567 PERLVAR(Iutf8_space, SV *)
568 PERLVAR(Iutf8_perl_space, SV *)
569 PERLVAR(Iutf8_perl_word, SV *)
570 PERLVAR(Iutf8_posix_digit, SV *)
571 PERLVAR(Iutf8_cntrl, SV *)
572 PERLVAR(Iutf8_graph, SV *)
573 PERLVAR(Iutf8_digit, SV *)
574 PERLVAR(Iutf8_upper, SV *)
575 PERLVAR(Iutf8_lower, SV *)
576 PERLVAR(Iutf8_print, SV *)
577 PERLVAR(Iutf8_punct, SV *)
578 PERLVAR(Iutf8_xdigit, SV *)
579 PERLVAR(Iutf8_mark, SV *)
580 PERLVAR(Iutf8_X_begin, SV *)
581 PERLVAR(Iutf8_X_extend, SV *)
582 PERLVAR(Iutf8_X_prepend, SV *)
583 PERLVAR(Iutf8_X_non_hangul, SV *)
584 PERLVAR(Iutf8_X_L, SV *)
585 PERLVAR(Iutf8_X_LV, SV *)
586 PERLVAR(Iutf8_X_LVT, SV *)
587 PERLVAR(Iutf8_X_T, SV *)
588 PERLVAR(Iutf8_X_V, SV *)
589 PERLVAR(Iutf8_X_LV_LVT_V, SV *)
590 PERLVAR(Iutf8_toupper, SV *)
591 PERLVAR(Iutf8_totitle, SV *)
592 PERLVAR(Iutf8_tolower, SV *)
593 PERLVAR(Iutf8_tofold, SV *)
594 PERLVAR(Ilast_swash_hv, HV *)
595 PERLVAR(Ilast_swash_tmps, U8 *)
596 PERLVAR(Ilast_swash_slen, STRLEN)
597 PERLVARA(Ilast_swash_key,10, U8)
598 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
601 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
604 PERLVAR(Ipad_reset_pending, bool) /* reset pad on next attempted alloc */
606 PERLVARI(Iglob_index, int, 0)
609 PERLVAR(Iparser, yy_parser *) /* current parser state */
611 /* Array of signal handlers, indexed by signal number, through which the C
612 signal handler dispatches. */
613 PERLVAR(Ipsig_ptr, SV**)
614 /* Array of names of signals, indexed by signal number, for (re)use as the first
615 argument to a signal handler. Only one block of memory is allocated for
616 both psig_name and psig_ptr. */
617 PERLVAR(Ipsig_name, SV**)
619 #if defined(PERL_IMPLICIT_SYS)
620 PERLVAR(IMem, struct IPerlMem*)
621 PERLVAR(IMemShared, struct IPerlMem*)
622 PERLVAR(IMemParse, struct IPerlMem*)
623 PERLVAR(IEnv, struct IPerlEnv*)
624 PERLVAR(IStdIO, struct IPerlStdIO*)
625 PERLVAR(ILIO, struct IPerlLIO*)
626 PERLVAR(IDir, struct IPerlDir*)
627 PERLVAR(ISock, struct IPerlSock*)
628 PERLVAR(IProc, struct IPerlProc*)
631 PERLVAR(Iptr_table, PTR_TBL_t*)
632 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
634 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
637 #ifdef USE_LOCALE_NUMERIC
639 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
643 #if defined(USE_ITHREADS)
644 PERLVAR(Iregex_pad, SV**) /* Shortcut into the array of
646 PERLVAR(Iregex_padav, AV*) /* All regex objects, indexed via the
647 values in op_pmoffset of pmop.
648 Entry 0 is an SV whose PV is a
649 "packed" list of IVs listing
650 the now-free slots in the array */
653 #ifdef USE_REENTRANT_API
654 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
657 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
658 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
661 PERLVARI(Iperlio, PerlIOl *,NULL)
662 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
663 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
666 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
668 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
670 PERLVAR(Iutf8_idstart, SV *)
671 PERLVAR(Iutf8_idcont, SV *)
673 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
675 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
676 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
678 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
680 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
682 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
684 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
686 /* Hooks to shared SVs and locks. */
687 PERLVARI(Isharehook, share_proc_t, Perl_sv_nosharing)
688 PERLVARI(Ilockhook, share_proc_t, Perl_sv_nosharing)
690 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
692 /* This reference ensures that the mathoms are linked with perl */
693 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
695 PERLVARI(Iunlockhook, share_proc_t, PERL_UNLOCK_HOOK)
697 PERLVARI(Ithreadhook, thrhook_proc_t, Perl_nothreadhook)
699 PERLVARI(Isignalhook, despatch_signals_proc_t, Perl_despatch_signals)
701 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
703 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
705 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
707 /* The last unconditional member of the interpreter structure when 5.10.0 was
708 released. The offset of the end of this is baked into a global variable in
709 any shared perl library which will allow a sanity test in future perl
711 #define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
713 #ifdef PERL_IMPLICIT_CONTEXT
714 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
715 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
716 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
717 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
721 #ifdef PERL_TRACK_MEMPOOL
722 /* For use with the memory debugging code in util.c */
723 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
726 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
727 /* File descriptor to talk to the child which dumps scalars. */
728 PERLVARI(Idumper_fd, int, -1)
731 /* Stores the PPID */
732 #ifdef THREADS_HAVE_PIDS
733 PERLVARI(Ippid, IV, 0)
737 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
738 /* (MAD = Misc Attribute Decoration) */
739 PERLVARI(Ixmlfp, PerlIO *,NULL)
742 #ifdef PL_OP_SLAB_ALLOC
743 PERLVAR(IOpPtr,I32 **)
744 PERLVARI(IOpSpace,I32,0)
745 PERLVAR(IOpSlab,I32 *)
748 #ifdef PERL_DEBUG_READONLY_OPS
749 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
750 PERLVARI(Islab_count, U32, 0) /* Size of the array */
753 /* Can shared object be destroyed */
754 PERLVARI(Idestroyhook, destroyable_proc_t, Perl_sv_destroyable)
756 #ifdef DEBUG_LEAKING_SCALARS
757 PERLVARI(Isv_serial, U32, 0) /* SV serial number, used in sv.c */
760 /* Register of known Method Resolution Orders.
761 What this actually points to is an implementation detail (it may change to
762 a structure incorporating a reference count - use mro_get_from_name to
763 retrieve a C<struct mro_alg *> */
764 PERLVAR(Iregistered_mros, HV *)
766 /* Compile-time block start/end hooks */
767 PERLVAR(Iblockhooks, AV *)
770 /* Everything that folds to a character, for case insensitivity regex matching */
771 PERLVARI(Iutf8_foldclosures, HV *, NULL)
773 PERLVAR(Icustom_ops, HV *) /* custom op registrations */
775 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
776 * above on where there are gaps which currently will be structure padding. */
778 /* Within a stable branch, new variables must be added to the very end, before
779 * this comment, for binary compatibility (the offsets of the old members must
781 * (Don't forget to add your variable also to perl_clone()!)
782 * XSUB.h provides wrapper functions via perlapi.h that make this
783 * irrelevant, but not all code may be expected to #include XSUB.h.