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 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 PERLVAR(Iscopestack_ix, I32)
47 PERLVAR(Iscopestack_max,I32)
49 PERLVAR(Isavestack, ANY *) /* items that need to be restored when
50 LEAVEing scopes we've ENTERed */
51 PERLVAR(Isavestack_ix, I32)
52 PERLVAR(Isavestack_max, I32)
54 PERLVAR(Itmps_stack, SV **) /* mortals we've made */
55 PERLVARI(Itmps_ix, I32, -1)
56 PERLVARI(Itmps_floor, I32, -1)
57 PERLVAR(Itmps_max, I32)
58 PERLVAR(Imodcount, I32) /* how much mod()ification in
61 PERLVAR(Imarkstack, I32 *) /* stack_sp locations we're
63 PERLVAR(Imarkstack_ptr, I32 *)
64 PERLVAR(Imarkstack_max, I32 *)
66 PERLVAR(ISv, SV *) /* used to hold temporary values */
67 PERLVAR(IXpv, XPV *) /* used to hold temporary values */
70 =for apidoc Amn|STRLEN|PL_na
72 A convenience variable which is typically used with C<SvPV> when one
73 doesn't care about the length of the string. It is usually more efficient
74 to either declare a local variable and use that instead or to use the
80 PERLVAR(Ina, STRLEN) /* for use in SvPV when length is
84 PERLVAR(Istatbuf, Stat_t)
85 PERLVAR(Istatcache, Stat_t) /* _ */
86 PERLVAR(Istatgv, GV *)
87 PERLVARI(Istatname, SV *, NULL)
90 PERLVAR(Itimesbuf, struct tms)
93 /* Fields used by magic variables such as $@, $/ and so on */
94 PERLVAR(Icurpm, PMOP *) /* what to do \ interps in REs from */
97 =for apidoc mn|SV*|PL_rs
99 The input record separator - C<$/> in Perl space.
101 =for apidoc mn|GV*|PL_last_in_gv
103 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
105 =for apidoc mn|GV*|PL_ofsgv
107 The glob containing the output field separator - C<*,> in Perl space.
112 PERLVAR(Irs, SV *) /* input record separator $/ */
113 PERLVAR(Ilast_in_gv, GV *) /* GV used in last <FH> */
114 PERLVAR(Iofsgv, GV *) /* GV of output field separator *, */
115 PERLVAR(Idefoutgv, GV *) /* default FH for output */
116 PERLVARI(Ichopset, const char *, " \n-") /* $: */
117 PERLVAR(Iformtarget, SV *)
118 PERLVAR(Ibodytarget, SV *)
119 PERLVAR(Itoptarget, SV *)
122 PERLVAR(Idefstash, HV *) /* main symbol table */
123 PERLVAR(Icurstash, HV *) /* symbol table for current package */
125 PERLVAR(Irestartop, OP *) /* propagating an error from croak? */
126 PERLVAR(Icurcop, COP *)
127 PERLVAR(Icurstack, AV *) /* THE STACK */
128 PERLVAR(Icurstackinfo, PERL_SI *) /* current stack + context */
129 PERLVAR(Imainstack, AV *) /* the stack when nothing funny is
132 PERLVAR(Itop_env, JMPENV *) /* ptr to current sigjmp environment */
133 PERLVAR(Istart_env, JMPENV) /* empty startup sigjmp environment */
134 PERLVARI(Ierrors, SV *, NULL) /* outstanding queued errors */
136 /* statics "owned" by various functions */
137 PERLVAR(Ihv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
139 PERLVAR(Ilastgotoprobe, OP*) /* from pp_ctl.c */
142 PERLVAR(Isortcop, OP *) /* user defined sort routine */
143 PERLVAR(Isortstash, HV *) /* which is in some package or other */
144 PERLVAR(Ifirstgv, GV *) /* $a */
145 PERLVAR(Isecondgv, GV *) /* $b */
148 PERLVAR(Iefloatbuf, char *)
149 PERLVAR(Iefloatsize, STRLEN)
153 PERLVAR(Iscreamfirst, I32 *)
154 PERLVAR(Iscreamnext, I32 *)
155 PERLVAR(Ilastscream, SV *)
157 PERLVAR(Ireg_state, struct re_save_state)
159 PERLVAR(Iregdummy, regnode) /* from regcomp.c */
161 PERLVARI(Idumpindent, U16, 4) /* number of blanks per dump
165 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
166 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
168 PERLVARA(Icolors,6, char *) /* from regcomp.c */
170 PERLVARI(Ipeepp, peep_t, MEMBER_TO_FPTR(Perl_peep))
171 /* Pointer to peephole optimizer */
174 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
176 When non-C<NULL>, the function pointed by this variable will be called each time an OP is freed with the corresponding OP as the argument.
177 This allows extensions to free any extra attribute they have locally attached to an OP.
178 It is also assured to first fire for the parent OP and then for its kids.
180 When you replace this variable, it is considered a good practice to store the possibly previously installed hook and that you recall it inside your own.
185 PERLVARI(Iopfreehook, Perl_ophook_t, 0) /* op_free() hook */
187 PERLVARI(Imaxscream, I32, -1)
188 PERLVARI(Ireginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
189 PERLVARI(Iwatchaddr, char **, 0)
190 PERLVAR(Iwatchok, char *)
192 /* the currently active slab in a chain of slabs of regmatch states,
193 * and the currently active state within that slab */
195 PERLVARI(Iregmatch_slab, regmatch_slab *, NULL)
196 PERLVAR(Iregmatch_state, regmatch_state *)
198 /* Put anything new that is pointer aligned here. */
200 PERLVAR(Idelaymagic, U16) /* ($<,$>) = ... */
201 PERLVAR(Ilocalizing, U8) /* are we processing a local() list? */
202 PERLVAR(Icolorset, bool) /* from regcomp.c */
203 PERLVARI(Idirty, bool, FALSE) /* in the middle of tearing things
205 PERLVAR(Iin_eval, U8) /* trap "fatal" errors? */
206 PERLVAR(Itainted, bool) /* using variables controlled by $< */
208 /* This value may be set when embedding for full cleanup */
209 /* 0=none, 1=full, 2=full with checks */
210 /* mod_perl is special, and also assigns a meaning -1 */
211 PERLVARI(Iperl_destruct_level, signed char, 0)
213 PERLVAR(Iperldb, U32)
215 /* pseudo environmental stuff */
216 PERLVAR(Iorigargc, int)
217 PERLVAR(Iorigargv, char **)
218 PERLVAR(Ienvgv, GV *)
219 PERLVAR(Iincgv, GV *)
220 PERLVAR(Ihintgv, GV *)
221 PERLVAR(Iorigfilename, char *)
222 PERLVAR(Idiehook, SV *)
223 PERLVAR(Iwarnhook, SV *)
226 PERLVAR(Ipatchlevel, SV *)
227 PERLVAR(Ilocalpatches, const char * const *)
228 PERLVARI(Isplitstr, const char *, " ")
230 PERLVAR(Iminus_c, bool)
231 PERLVAR(Iminus_n, bool)
232 PERLVAR(Iminus_p, bool)
233 PERLVAR(Iminus_l, bool)
234 PERLVAR(Iminus_a, bool)
235 PERLVAR(Iminus_F, bool)
236 PERLVAR(Idoswitches, bool)
237 PERLVAR(Iminus_E, bool)
241 =for apidoc mn|bool|PL_dowarn
243 The C variable which corresponds to Perl's $^W warning variable.
249 PERLVAR(Idoextract, bool)
250 PERLVAR(Isawampersand, bool) /* must save all match strings */
251 PERLVAR(Iunsafe, bool)
252 PERLVAR(Iexit_flags, U8) /* was exit() unexpected, etc. */
253 PERLVAR(Isrand_called, bool)
254 /* Part of internal state, but makes the 16th 1 byte variable in a row. */
255 PERLVAR(Itainting, bool) /* doing taint checks */
257 PERLVAR(Iinplace, char *)
258 PERLVAR(Ie_script, SV *)
260 /* magical thingies */
261 PERLVAR(Ibasetime, Time_t) /* $^T */
262 PERLVAR(Iformfeed, SV *) /* $^L */
265 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
266 /* top fd to pass to subprocesses */
267 PERLVAR(Istatusvalue, I32) /* $? */
269 PERLVAR(Istatusvalue_vms,U32)
271 PERLVAR(Istatusvalue_posix,I32)
274 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
275 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
277 /* shortcuts to various I/O objects */
278 PERLVAR(Istdingv, GV *)
279 PERLVAR(Istderrgv, GV *)
280 PERLVAR(Idefgv, GV *)
281 PERLVAR(Iargvgv, GV *)
282 PERLVAR(Iargvoutgv, GV *)
283 PERLVAR(Iargvout_stack, AV *)
285 /* shortcuts to regexp stuff */
286 PERLVAR(Ireplgv, GV *)
288 /* shortcuts to misc objects */
289 PERLVAR(Ierrgv, GV *)
291 /* shortcuts to debugging objects */
293 PERLVAR(IDBline, GV *)
296 =for apidoc mn|GV *|PL_DBsub
297 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
298 the SV which holds the name of the sub being debugged. This is the C
299 variable which corresponds to Perl's $DB::sub variable. See
302 =for apidoc mn|SV *|PL_DBsingle
303 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
304 boolean which indicates whether subs are being single-stepped.
305 Single-stepping is automatically turned on after every step. This is the C
306 variable which corresponds to Perl's $DB::single variable. See
309 =for apidoc mn|SV *|PL_DBtrace
310 Trace variable used when Perl is run in debugging mode, with the B<-d>
311 switch. This is the C variable which corresponds to Perl's $DB::trace
312 variable. See C<PL_DBsingle>.
317 PERLVAR(IDBsub, GV *)
318 PERLVAR(IDBsingle, SV *)
319 PERLVAR(IDBtrace, SV *)
320 PERLVAR(IDBsignal, SV *)
321 PERLVAR(Idbargs, AV *) /* args to call listed by caller function */
324 PERLVAR(Idebstash, HV *) /* symbol table for perldb package */
325 PERLVAR(Iglobalstash, HV *) /* global keyword overrides imported here */
326 PERLVAR(Icurstname, SV *) /* name of current package */
327 PERLVAR(Ibeginav, AV *) /* names of BEGIN subroutines */
328 PERLVAR(Iendav, AV *) /* names of END subroutines */
329 PERLVAR(Iunitcheckav, AV *) /* names of UNITCHECK subroutines */
330 PERLVAR(Icheckav, AV *) /* names of CHECK subroutines */
331 PERLVAR(Iinitav, AV *) /* names of INIT subroutines */
332 PERLVAR(Istrtab, HV *) /* shared string table */
333 PERLVARI(Isub_generation,U32,1) /* incr to invalidate method cache */
335 /* funky return mechanisms */
336 PERLVAR(Iforkprocess, int) /* so do_open |- can return proc# */
338 /* memory management */
339 PERLVAR(Isv_count, I32) /* how many SV* are currently allocated */
340 PERLVAR(Isv_objcount, I32) /* how many objects are currently allocated */
341 PERLVAR(Isv_root, SV*) /* storage for SVs belonging to interp */
342 PERLVAR(Isv_arenaroot, SV*) /* list of areas for garbage collection */
344 /* subprocess state */
345 PERLVAR(Ifdpid, AV *) /* keep fd-to-pid mappings for my_popen */
348 PERLVARI(Iop_mask, char *, NULL) /* masked operations for safe evals */
350 /* current interpreter roots */
351 PERLVAR(Imain_cv, CV *)
352 PERLVAR(Imain_root, OP *)
353 PERLVAR(Imain_start, OP *)
354 PERLVAR(Ieval_root, OP *)
355 PERLVAR(Ieval_start, OP *)
357 /* runtime control stuff */
358 PERLVARI(Icurcopdb, COP *, NULL)
360 PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
361 PERLVAR(Ilastfd, int) /* what to preserve mode on */
362 PERLVAR(Ioldname, char *) /* what to preserve mode on */
363 PERLVAR(IArgv, const char **) /* stuff to free from do_aexec, vfork safe */
364 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
365 /* Elements in this array have ';' appended and are injected as a single line
366 into the tokeniser. You can't put any (literal) newlines into any program
367 you stuff in into this array, as the point where it's injected is expecting
368 a single physical line. */
369 PERLVAR(Ipreambleav, AV *)
370 PERLVAR(Imess_sv, SV *)
371 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
372 /* statics moved here for shared library purposes */
373 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
374 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
375 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
376 PERLVARI(Ilaststype, U16, OP_STAT)
377 PERLVARI(Ilaststatval, int, -1)
379 /* interpreter atexit processing */
380 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
381 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
382 /* list of exit functions */
385 =for apidoc Amn|HV*|PL_modglobal
387 C<PL_modglobal> is a general purpose, interpreter global HV for use by
388 extensions that need to keep information on a per-interpreter basis.
389 In a pinch, it can also be used as a symbol table for extensions
390 to share data among each other. It is a good idea to use keys
391 prefixed by the package name of the extension that owns the data.
396 PERLVAR(Imodglobal, HV *) /* per-interp module data */
398 /* these used to be in global before 5.004_68 */
399 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
401 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
403 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
404 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
405 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
406 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
407 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
409 #ifdef HAVE_INTERP_INTERN
410 PERLVAR(Isys_intern, struct interp_intern)
411 /* platform internals */
414 /* more statics moved here */
415 PERLVAR(IDBcv, CV *) /* from perl.c */
416 PERLVARI(Igeneration, int, 100) /* from op.c */
418 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
419 PERLVARI(Iin_clean_all, bool, FALSE) /* from sv.c */
420 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
421 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
423 PERLVAR(Iuid, Uid_t) /* current real user id */
424 PERLVAR(Ieuid, Uid_t) /* current effective user id */
425 PERLVAR(Igid, Gid_t) /* current real group id */
426 PERLVAR(Iegid, Gid_t) /* current effective group id */
427 PERLVARI(Ian, U32, 0) /* malloc sequence number */
428 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
429 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
430 PERLVAR(Iorigalen, U32)
431 PERLVAR(Iorigenviron, char **)
432 #ifdef PERL_USES_PL_PIDSTATUS
433 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
435 PERLVAR(Iosname, char *) /* operating system */
437 PERLVAR(Isighandlerp, Sighandler_t)
439 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
441 PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
442 PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
444 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
446 PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
449 =for apidoc Amn|SV|PL_sv_undef
450 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
452 =for apidoc Amn|SV|PL_sv_no
453 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
456 =for apidoc Amn|SV|PL_sv_yes
457 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
463 PERLVAR(Isv_undef, SV)
467 PERLVAR(Isubname, SV *) /* name of current subroutine */
469 PERLVAR(Isubline, I32) /* line this subroutine began on */
470 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
472 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
473 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
475 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
477 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
479 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
481 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
482 PERLVARI(Ibreakable_sub_gen, U32, 0)
484 PERLVARI(Iamagic_generation, long, 0)
486 #ifdef USE_LOCALE_COLLATE
487 PERLVAR(Icollation_name,char *) /* Name of current collation */
488 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
489 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
490 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
491 PERLVARI(Icollation_standard, bool, TRUE)
492 /* Assume simple collation */
493 #endif /* USE_LOCALE_COLLATE */
496 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
501 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
505 #ifdef USE_LOCALE_NUMERIC
507 PERLVARI(Inumeric_standard, bool, TRUE)
508 /* Assume simple numerics */
509 PERLVARI(Inumeric_local, bool, TRUE)
510 /* Assume local numerics */
511 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
512 #endif /* !USE_LOCALE_NUMERIC */
514 /* utf8 character classes */
515 PERLVAR(Iutf8_alnum, SV *)
516 PERLVAR(Iutf8_ascii, SV *)
517 PERLVAR(Iutf8_alpha, SV *)
518 PERLVAR(Iutf8_space, SV *)
519 PERLVAR(Iutf8_cntrl, SV *)
520 PERLVAR(Iutf8_graph, SV *)
521 PERLVAR(Iutf8_digit, SV *)
522 PERLVAR(Iutf8_upper, SV *)
523 PERLVAR(Iutf8_lower, SV *)
524 PERLVAR(Iutf8_print, SV *)
525 PERLVAR(Iutf8_punct, SV *)
526 PERLVAR(Iutf8_xdigit, SV *)
527 PERLVAR(Iutf8_mark, SV *)
528 PERLVAR(Iutf8_toupper, SV *)
529 PERLVAR(Iutf8_totitle, SV *)
530 PERLVAR(Iutf8_tolower, SV *)
531 PERLVAR(Iutf8_tofold, SV *)
532 PERLVAR(Ilast_swash_hv, HV *)
533 PERLVAR(Ilast_swash_tmps, U8 *)
534 PERLVAR(Ilast_swash_slen, STRLEN)
535 PERLVARA(Ilast_swash_key,10, U8)
536 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
539 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
542 PERLVAR(Ipad_reset_pending, bool) /* reset pad on next attempted alloc */
544 PERLVARI(Iglob_index, int, 0)
547 PERLVAR(Iparser, yy_parser *) /* current parser state */
549 /* Array of signal handlers, indexed by signal number, through which the C
550 signal handler dispatches. */
551 PERLVAR(Ipsig_ptr, SV**)
552 /* Array of names of signals, indexed by signal number, for (re)use as the first
553 argument to a signal handler. Only one block of memory is allocated for
554 both psig_name and psig_ptr. */
555 PERLVAR(Ipsig_name, SV**)
557 #if defined(PERL_IMPLICIT_SYS)
558 PERLVAR(IMem, struct IPerlMem*)
559 PERLVAR(IMemShared, struct IPerlMem*)
560 PERLVAR(IMemParse, struct IPerlMem*)
561 PERLVAR(IEnv, struct IPerlEnv*)
562 PERLVAR(IStdIO, struct IPerlStdIO*)
563 PERLVAR(ILIO, struct IPerlLIO*)
564 PERLVAR(IDir, struct IPerlDir*)
565 PERLVAR(ISock, struct IPerlSock*)
566 PERLVAR(IProc, struct IPerlProc*)
569 PERLVAR(Iptr_table, PTR_TBL_t*)
570 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
572 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
575 #ifdef USE_LOCALE_NUMERIC
577 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
581 #if defined(USE_ITHREADS)
582 PERLVAR(Iregex_pad, SV**) /* Shortcut into the array of
584 PERLVAR(Iregex_padav, AV*) /* All regex objects, indexed via the
585 values in op_pmoffset of pmop.
586 Entry 0 is an SV whose PV is a
587 "packed" list of IVs listing
588 the now-free slots in the array */
591 #ifdef USE_REENTRANT_API
592 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
595 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
596 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
599 PERLVARI(Iperlio, PerlIO *,NULL)
600 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
601 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
604 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
606 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
608 PERLVAR(Iutf8_idstart, SV *)
609 PERLVAR(Iutf8_idcont, SV *)
611 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
613 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
614 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
616 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
618 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
620 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
622 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
624 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
626 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
628 /* Hooks to shared SVs and locks. */
629 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
630 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
632 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
634 /* This reference ensures that the mathoms are linked with perl */
635 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
637 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
639 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
641 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
643 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
645 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
647 /* The last unconditional member of the interpreter structure when 5.10.0 was
648 released. The offset of the end of this is baked into a global variable in
649 any shared perl library which will allow a sanity test in future perl
651 #define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
653 #ifdef PERL_IMPLICIT_CONTEXT
654 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
655 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
656 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
657 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
661 #ifdef PERL_TRACK_MEMPOOL
662 /* For use with the memory debugging code in util.c */
663 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
666 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
667 /* File descriptor to talk to the child which dumps scalars. */
668 PERLVARI(Idumper_fd, int, -1)
671 /* Stores the PPID */
672 #ifdef THREADS_HAVE_PIDS
673 PERLVARI(Ippid, IV, 0)
677 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
678 /* (MAD = Misc Attribute Decoration) */
679 PERLVARI(Ixmlfp, PerlIO *,NULL)
682 #ifdef PL_OP_SLAB_ALLOC
683 PERLVAR(IOpPtr,I32 **)
684 PERLVARI(IOpSpace,I32,0)
685 PERLVAR(IOpSlab,I32 *)
688 #ifdef PERL_DEBUG_READONLY_OPS
689 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
690 PERLVARI(Islab_count, U32, 0) /* Size of the array */
693 /* Can shared object be destroyed */
694 PERLVARI(Idestroyhook, destroyable_proc_t, MEMBER_TO_FPTR(Perl_sv_destroyable))
696 #ifdef DEBUG_LEAKING_SCALARS
697 PERLVARI(Isv_serial, U32, 0) /* SV serial number, used in sv.c */
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(Iregistered_mros, HV *)
706 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
707 * above on where there are gaps which currently will be structure padding. */
709 /* Within a stable branch, new variables must be added to the very end, before
710 * this comment, for binary compatibility (the offsets of the old members must
712 * (Don't forget to add your variable also to perl_clone()!)
713 * XSUB.h provides wrapper functions via perlapi.h that make this
714 * irrelevant, but not all code may be expected to #include XSUB.h.