3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
5 * by Larry Wall and others
7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
13 =head1 Per-Interpreter Variables
16 /* These variables are per-interpreter in threaded/multiplicity builds,
19 * Don't forget to re-run embed.pl to propagate changes! */
21 /* New variables must be added to the very end for binary compatibility.
22 * XSUB.h provides wrapper functions via perlapi.h that make this
23 * irrelevant, but not all code may be expected to #include XSUB.h. */
25 /* Don't forget to add your variable also to perl_clone()! */
27 /* The 'I' prefix is only needed for vars that need appropriate #defines
28 * generated when built with or without MULTIPLICITY. It is also used
29 * to generate the appropriate export list for win32.
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(Istack_sp, SV **) /* top of the stack */
37 PERLVAR(Iopsave, OP *)
39 PERLVAR(Iop, OP *) /* currently executing op */
41 PERLVAR(Icurpad, SV **) /* active pad (lexicals+tmps) */
43 PERLVAR(Istack_base, SV **)
44 PERLVAR(Istack_max, SV **)
46 PERLVAR(Iscopestack, I32 *) /* scopes we've ENTERed */
47 PERLVAR(Iscopestack_ix, I32)
48 PERLVAR(Iscopestack_max,I32)
50 PERLVAR(Isavestack, ANY *) /* items that need to be restored when
51 LEAVEing scopes we've ENTERed */
52 PERLVAR(Isavestack_ix, I32)
53 PERLVAR(Isavestack_max, I32)
55 PERLVAR(Itmps_stack, SV **) /* mortals we've made */
56 PERLVARI(Itmps_ix, I32, -1)
57 PERLVARI(Itmps_floor, I32, -1)
58 PERLVAR(Itmps_max, I32)
59 PERLVAR(Imodcount, I32) /* how much mod()ification in
62 PERLVAR(Imarkstack, I32 *) /* stack_sp locations we're
64 PERLVAR(Imarkstack_ptr, I32 *)
65 PERLVAR(Imarkstack_max, I32 *)
67 PERLVAR(ISv, SV *) /* used to hold temporary values */
68 PERLVAR(IXpv, XPV *) /* used to hold temporary values */
71 =for apidoc Amn|STRLEN|PL_na
73 A convenience variable which is typically used with C<SvPV> when one
74 doesn't care about the length of the string. It is usually more efficient
75 to either declare a local variable and use that instead or to use the
81 PERLVAR(Ina, STRLEN) /* for use in SvPV when length is
85 PERLVAR(Istatbuf, Stat_t)
86 PERLVAR(Istatcache, Stat_t) /* _ */
87 PERLVAR(Istatgv, GV *)
88 PERLVARI(Istatname, SV *, NULL)
91 PERLVAR(Itimesbuf, struct tms)
94 /* Fields used by magic variables such as $@, $/ and so on */
95 PERLVAR(Icurpm, PMOP *) /* what to do \ interps in REs from */
98 =for apidoc mn|SV*|PL_rs
100 The input record separator - C<$/> in Perl space.
102 =for apidoc mn|GV*|PL_last_in_gv
104 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
106 =for apidoc mn|SV*|PL_ofs_sv
108 The output field separator - C<$,> in Perl space.
113 PERLVAR(Irs, SV *) /* input record separator $/ */
114 PERLVAR(Ilast_in_gv, GV *) /* GV used in last <FH> */
115 PERLVAR(Iofs_sv, SV *) /* output field separator $, */
116 PERLVAR(Idefoutgv, GV *) /* default FH for output */
117 PERLVARI(Ichopset, const char *, " \n-") /* $: */
118 PERLVAR(Iformtarget, SV *)
119 PERLVAR(Ibodytarget, SV *)
120 PERLVAR(Itoptarget, SV *)
123 PERLVAR(Idefstash, HV *) /* main symbol table */
124 PERLVAR(Icurstash, HV *) /* symbol table for current package */
126 PERLVAR(Irestartop, OP *) /* propagating an error from croak? */
127 PERLVAR(Icurcop, COP * VOL)
128 PERLVAR(Icurstack, AV *) /* THE STACK */
129 PERLVAR(Icurstackinfo, PERL_SI *) /* current stack + context */
130 PERLVAR(Imainstack, AV *) /* the stack when nothing funny is
133 PERLVAR(Itop_env, JMPENV *) /* ptr to current sigjmp environment */
134 PERLVAR(Istart_env, JMPENV) /* empty startup sigjmp environment */
135 PERLVARI(Ierrors, SV *, NULL) /* outstanding queued errors */
137 /* statics "owned" by various functions */
138 PERLVAR(Ihv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
140 PERLVAR(Ilastgotoprobe, OP*) /* from pp_ctl.c */
143 PERLVAR(Isortcop, OP *) /* user defined sort routine */
144 PERLVAR(Isortstash, HV *) /* which is in some package or other */
145 PERLVAR(Ifirstgv, GV *) /* $a */
146 PERLVAR(Isecondgv, GV *) /* $b */
149 PERLVAR(Iefloatbuf, char *)
150 PERLVAR(Iefloatsize, STRLEN)
154 PERLVAR(Iscreamfirst, I32 *)
155 PERLVAR(Iscreamnext, I32 *)
156 PERLVAR(Ilastscream, SV *)
158 PERLVAR(Ireg_state, struct re_save_state)
160 PERLVAR(Iregdummy, regnode) /* from regcomp.c */
162 PERLVARI(Idumpindent, U16, 4) /* number of blanks per dump
165 /* Space for U16 here without increasing the structure size */
167 PERLVARA(Icolors,6, char *) /* from regcomp.c */
169 PERLVARI(Ipeepp, peep_t, MEMBER_TO_FPTR(Perl_peep))
170 /* Pointer to peephole optimizer */
172 PERLVARI(Imaxscream, I32, -1)
173 PERLVARI(Ireginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
174 PERLVARI(Iwatchaddr, char **, 0)
175 PERLVAR(Iwatchok, char *)
177 /* the currently active slab in a chain of slabs of regmatch states,
178 * and the currently active state within that slab */
180 PERLVARI(Iregmatch_slab, regmatch_slab *, NULL)
181 PERLVAR(Iregmatch_state, regmatch_state *)
183 /* Put anything new that is pointer aligned here. */
185 PERLVAR(Idelaymagic, U16) /* ($<,$>) = ... */
186 PERLVAR(Ilocalizing, U8) /* are we processing a local() list? */
187 PERLVAR(Icolorset, bool) /* from regcomp.c */
188 PERLVARI(Idirty, bool, FALSE) /* in the middle of tearing things
190 PERLVAR(Iin_eval, VOL U8) /* trap "fatal" errors? */
191 PERLVAR(Itainted, bool) /* using variables controlled by $< */
193 /* This value may be set when embedding for full cleanup */
194 /* 0=none, 1=full, 2=full with checks */
195 PERLVARI(Iperl_destruct_level, U8, 0)
197 PERLVAR(Iperldb, U32)
199 /* pseudo environmental stuff */
200 PERLVAR(Iorigargc, int)
201 PERLVAR(Iorigargv, char **)
202 PERLVAR(Ienvgv, GV *)
203 PERLVAR(Iincgv, GV *)
204 PERLVAR(Ihintgv, GV *)
205 PERLVAR(Iorigfilename, char *)
206 PERLVAR(Idiehook, SV *)
207 PERLVAR(Iwarnhook, SV *)
210 PERLVAR(Ipatchlevel, SV *)
211 PERLVAR(Ilocalpatches, const char * const *)
212 PERLVARI(Isplitstr, const char *, " ")
214 PERLVAR(Iminus_c, bool)
215 PERLVAR(Ipreprocess, bool)
216 PERLVAR(Iminus_n, bool)
217 PERLVAR(Iminus_p, bool)
218 PERLVAR(Iminus_l, bool)
219 PERLVAR(Iminus_a, bool)
220 PERLVAR(Iminus_F, bool)
221 PERLVAR(Idoswitches, bool)
223 PERLVAR(Iminus_E, bool)
227 =for apidoc mn|bool|PL_dowarn
229 The C variable which corresponds to Perl's $^W warning variable.
235 PERLVAR(Idoextract, bool)
236 PERLVAR(Isawampersand, bool) /* must save all match strings */
237 PERLVAR(Iunsafe, bool)
238 PERLVAR(Iexit_flags, U8) /* was exit() unexpected, etc. */
239 PERLVAR(Isrand_called, bool)
240 /* Part of internal state, but makes the 16th 1 byte variable in a row. */
241 PERLVAR(Itainting, bool) /* doing taint checks */
242 PERLVAR(Iinplace, char *)
243 PERLVAR(Ie_script, SV *)
245 /* magical thingies */
246 PERLVAR(Ibasetime, Time_t) /* $^T */
247 PERLVAR(Iformfeed, SV *) /* $^L */
250 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
251 /* top fd to pass to subprocesses */
252 PERLVAR(Istatusvalue, I32) /* $? */
254 PERLVAR(Istatusvalue_vms,U32)
256 PERLVAR(Istatusvalue_posix,I32)
260 PERLVARI(Icshlen, I32, 0)
261 PERLVARI(Icshname, const char *, CSH)
264 /* shortcuts to various I/O objects */
265 PERLVAR(Istdingv, GV *)
266 PERLVAR(Istderrgv, GV *)
267 PERLVAR(Idefgv, GV *)
268 PERLVAR(Iargvgv, GV *)
269 PERLVAR(Iargvoutgv, GV *)
270 PERLVAR(Iargvout_stack, AV *)
272 /* shortcuts to regexp stuff */
273 PERLVAR(Ireplgv, GV *)
275 /* shortcuts to misc objects */
276 PERLVAR(Ierrgv, GV *)
278 /* shortcuts to debugging objects */
280 PERLVAR(IDBline, GV *)
283 =for apidoc mn|GV *|PL_DBsub
284 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
285 the SV which holds the name of the sub being debugged. This is the C
286 variable which corresponds to Perl's $DB::sub variable. See
289 =for apidoc mn|SV *|PL_DBsingle
290 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
291 boolean which indicates whether subs are being single-stepped.
292 Single-stepping is automatically turned on after every step. This is the C
293 variable which corresponds to Perl's $DB::single variable. See
296 =for apidoc mn|SV *|PL_DBtrace
297 Trace variable used when Perl is run in debugging mode, with the B<-d>
298 switch. This is the C variable which corresponds to Perl's $DB::trace
299 variable. See C<PL_DBsingle>.
304 PERLVAR(IDBsub, GV *)
305 PERLVAR(IDBsingle, SV *)
306 PERLVAR(IDBtrace, SV *)
307 PERLVAR(IDBsignal, SV *)
308 PERLVAR(Idbargs, AV *) /* args to call listed by caller function */
311 PERLVAR(Idebstash, HV *) /* symbol table for perldb package */
312 PERLVAR(Iglobalstash, HV *) /* global keyword overrides imported here */
313 PERLVAR(Icurstname, SV *) /* name of current package */
314 PERLVAR(Ibeginav, AV *) /* names of BEGIN subroutines */
315 PERLVAR(Iendav, AV *) /* names of END subroutines */
316 PERLVAR(Iunitcheckav, AV *) /* names of UNITCHECK subroutines */
317 PERLVAR(Icheckav, AV *) /* names of CHECK subroutines */
318 PERLVAR(Iinitav, AV *) /* names of INIT subroutines */
319 PERLVAR(Istrtab, HV *) /* shared string table */
320 PERLVARI(Isub_generation,U32,1) /* incr to invalidate method cache */
322 /* funky return mechanisms */
323 PERLVAR(Iforkprocess, int) /* so do_open |- can return proc# */
325 /* memory management */
326 PERLVAR(Isv_count, I32) /* how many SV* are currently allocated */
327 PERLVAR(Isv_objcount, I32) /* how many objects are currently allocated */
328 PERLVAR(Isv_root, SV*) /* storage for SVs belonging to interp */
329 PERLVAR(Isv_arenaroot, SV*) /* list of areas for garbage collection */
331 /* subprocess state */
332 PERLVAR(Ifdpid, AV *) /* keep fd-to-pid mappings for my_popen */
335 PERLVARI(Iop_mask, char *, NULL) /* masked operations for safe evals */
337 /* current interpreter roots */
338 PERLVAR(Imain_cv, CV *)
339 PERLVAR(Imain_root, OP *)
340 PERLVAR(Imain_start, OP *)
341 PERLVAR(Ieval_root, OP *)
342 PERLVAR(Ieval_start, OP *)
344 /* runtime control stuff */
345 PERLVARI(Icurcopdb, COP *, NULL)
347 PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
348 PERLVAR(Ilastfd, int) /* what to preserve mode on */
349 PERLVAR(Ioldname, char *) /* what to preserve mode on */
350 PERLVAR(IArgv, char **) /* stuff to free from do_aexec, vfork safe */
351 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
352 PERLVAR(Ipreambleav, AV *)
353 PERLVAR(Imess_sv, SV *)
354 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
355 /* statics moved here for shared library purposes */
356 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
357 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
358 PERLVARI(Ilaststype, U16, OP_STAT)
359 PERLVARI(Ilaststatval, int, -1)
361 /* interpreter atexit processing */
362 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
363 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
364 /* list of exit functions */
367 =for apidoc Amn|HV*|PL_modglobal
369 C<PL_modglobal> is a general purpose, interpreter global HV for use by
370 extensions that need to keep information on a per-interpreter basis.
371 In a pinch, it can also be used as a symbol table for extensions
372 to share data among each other. It is a good idea to use keys
373 prefixed by the package name of the extension that owns the data.
378 PERLVAR(Imodglobal, HV *) /* per-interp module data */
380 /* these used to be in global before 5.004_68 */
381 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
383 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
385 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
386 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
387 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
388 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
389 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
391 #ifdef HAVE_INTERP_INTERN
392 PERLVAR(Isys_intern, struct interp_intern)
393 /* platform internals */
396 /* more statics moved here */
397 PERLVAR(IDBcv, CV *) /* from perl.c */
398 PERLVARI(Igeneration, int, 100) /* from op.c */
400 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
401 PERLVARI(Iin_clean_all, bool, FALSE) /* from sv.c */
402 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
403 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
405 PERLVAR(Iuid, Uid_t) /* current real user id */
406 PERLVAR(Ieuid, Uid_t) /* current effective user id */
407 PERLVAR(Igid, Gid_t) /* current real group id */
408 PERLVAR(Iegid, Gid_t) /* current effective group id */
409 PERLVARI(Ian, U32, 0) /* malloc sequence number */
410 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
411 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
412 PERLVAR(Iorigalen, U32)
413 PERLVAR(Iorigenviron, char **)
414 #ifdef PERL_USES_PL_PIDSTATUS
415 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
417 PERLVAR(Iosname, char *) /* operating system */
419 PERLVAR(Isighandlerp, Sighandler_t)
421 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
423 PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
424 PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
426 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
428 PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
431 =for apidoc Amn|SV|PL_sv_undef
432 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
434 =for apidoc Amn|SV|PL_sv_no
435 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
438 =for apidoc Amn|SV|PL_sv_yes
439 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
445 PERLVAR(Isv_undef, SV)
449 PERLVAR(Isubname, SV *) /* name of current subroutine */
451 PERLVAR(Isubline, I32) /* line this subroutine began on */
452 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
454 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
455 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
457 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
458 PERLVAR(Ipad_reset_pending, I32) /* reset pad on next attempted alloc */
460 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
462 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
464 PERLVARI(Iamagic_generation, long, 0)
466 #ifdef USE_LOCALE_COLLATE
467 PERLVAR(Icollation_name,char *) /* Name of current collation */
468 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
469 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
470 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
471 PERLVARI(Icollation_standard, bool, TRUE)
472 /* Assume simple collation */
473 #endif /* USE_LOCALE_COLLATE */
476 #ifdef PERL_UTF8_CACHE_ASSERT
481 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
485 #ifdef USE_LOCALE_NUMERIC
487 PERLVARI(Inumeric_standard, bool, TRUE)
488 /* Assume simple numerics */
489 PERLVARI(Inumeric_local, bool, TRUE)
490 /* Assume local numerics */
491 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
492 #endif /* !USE_LOCALE_NUMERIC */
494 /* utf8 character classes */
495 PERLVAR(Iutf8_alnum, SV *)
496 PERLVAR(Iutf8_alnumc, SV *)
497 PERLVAR(Iutf8_ascii, SV *)
498 PERLVAR(Iutf8_alpha, SV *)
499 PERLVAR(Iutf8_space, SV *)
500 PERLVAR(Iutf8_cntrl, SV *)
501 PERLVAR(Iutf8_graph, SV *)
502 PERLVAR(Iutf8_digit, SV *)
503 PERLVAR(Iutf8_upper, SV *)
504 PERLVAR(Iutf8_lower, SV *)
505 PERLVAR(Iutf8_print, SV *)
506 PERLVAR(Iutf8_punct, SV *)
507 PERLVAR(Iutf8_xdigit, SV *)
508 PERLVAR(Iutf8_mark, SV *)
509 PERLVAR(Iutf8_toupper, SV *)
510 PERLVAR(Iutf8_totitle, SV *)
511 PERLVAR(Iutf8_tolower, SV *)
512 PERLVAR(Iutf8_tofold, SV *)
513 PERLVAR(Ilast_swash_hv, HV *)
514 PERLVAR(Ilast_swash_tmps, U8 *)
515 PERLVAR(Ilast_swash_slen, STRLEN)
516 PERLVARA(Ilast_swash_key,10, U8)
517 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
520 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
523 PERLVARI(Iglob_index, int, 0)
526 PERLVAR(Iparser, yy_parser *) /* current parser state */
528 PERLVAR(Ibitcount, char *)
530 PERLVAR(Ipsig_ptr, SV**)
531 PERLVAR(Ipsig_name, SV**)
533 #if defined(PERL_IMPLICIT_SYS)
534 PERLVAR(IMem, struct IPerlMem*)
535 PERLVAR(IMemShared, struct IPerlMem*)
536 PERLVAR(IMemParse, struct IPerlMem*)
537 PERLVAR(IEnv, struct IPerlEnv*)
538 PERLVAR(IStdIO, struct IPerlStdIO*)
539 PERLVAR(ILIO, struct IPerlLIO*)
540 PERLVAR(IDir, struct IPerlDir*)
541 PERLVAR(ISock, struct IPerlSock*)
542 PERLVAR(IProc, struct IPerlProc*)
545 PERLVAR(Iptr_table, PTR_TBL_t*)
546 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
548 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
550 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
551 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
554 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
555 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
556 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
558 #ifdef USE_LOCALE_NUMERIC
560 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
564 #if defined(USE_ITHREADS)
565 PERLVAR(Iregex_pad, SV**) /* All regex objects */
566 PERLVAR(Iregex_padav, AV*) /* All regex objects */
570 #ifdef USE_REENTRANT_API
571 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
576 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
577 /* (MAD = Misc Attribute Decoration) */
578 PERLVARI(Ixmlfp, PerlIO *,NULL)
581 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
582 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
585 PERLVARI(Iperlio, PerlIO *,NULL)
586 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
587 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
590 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
592 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
594 #ifdef PL_OP_SLAB_ALLOC
595 PERLVAR(IOpPtr,I32 **)
596 PERLVARI(IOpSpace,I32,0)
597 PERLVAR(IOpSlab,I32 *)
600 PERLVAR(Iutf8_idstart, SV *)
601 PERLVAR(Iutf8_idcont, SV *)
603 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
605 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
606 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
608 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
610 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
612 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
614 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
616 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
618 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
620 /* Hooks to shared SVs and locks. */
621 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
622 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
624 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
626 /* This reference ensures that the mathoms are linked with perl */
627 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
629 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
631 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
633 /* Stores the PPID */
634 #ifdef THREADS_HAVE_PIDS
635 PERLVARI(Ippid, IV, 0)
638 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
640 PERLVAR(IDBassertion, SV *)
642 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
644 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
645 /* File descriptor to talk to the child which dumps scalars. */
646 PERLVARI(Idumper_fd, int, -1)
649 #ifdef PERL_IMPLICIT_CONTEXT
650 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
651 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
652 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
653 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
657 #ifdef PERL_TRACK_MEMPOOL
658 /* For use with the memory debugging code in util.c */
659 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
662 #ifdef PERL_DEBUG_READONLY_OPS
663 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
664 PERLVARI(Islab_count, U32, 0) /* Size of the array */
667 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
669 /* If you are adding a U8 or U16, see the 'Space' comments above on where
670 * there are gaps which currently will be structure padding. */
672 /* Within a stable branch, new variables must be added to the very end, before
673 * this comment, for binary compatibility (the offsets of the old members must
675 * (Don't forget to add your variable also to perl_clone()!)
676 * XSUB.h provides wrapper functions via perlapi.h that make this
677 * irrelevant, but not all code may be expected to #include XSUB.h.