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 *) /* $b */
148 PERLVAR(Iefloatbuf, char *)
149 PERLVAR(Iefloatsize, STRLEN)
153 PERLVAR(Iscreamfirst, I32 *)
154 PERLVAR(Iscreamnext, I32 *)
155 PERLVAR(Ilastscream, SV *)
157 PERLVAR(Ireg_state, struct re_save_state)
159 PERLVAR(Iregdummy, regnode) /* from regcomp.c */
161 PERLVARI(Idumpindent, U16, 4) /* number of blanks per dump
165 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
166 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
168 PERLVARA(Icolors,6, char *) /* from regcomp.c */
170 PERLVARI(Ipeepp, peep_t, MEMBER_TO_FPTR(Perl_peep))
171 /* Pointer to peephole optimizer */
173 PERLVARI(Imaxscream, I32, -1)
174 PERLVARI(Ireginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
175 PERLVARI(Iwatchaddr, char **, 0)
176 PERLVAR(Iwatchok, char *)
178 /* the currently active slab in a chain of slabs of regmatch states,
179 * and the currently active state within that slab */
181 PERLVARI(Iregmatch_slab, regmatch_slab *, NULL)
182 PERLVAR(Iregmatch_state, regmatch_state *)
184 /* Put anything new that is pointer aligned here. */
186 PERLVAR(Idelaymagic, U16) /* ($<,$>) = ... */
187 PERLVAR(Ilocalizing, U8) /* are we processing a local() list? */
188 PERLVAR(Icolorset, bool) /* from regcomp.c */
189 PERLVARI(Idirty, bool, FALSE) /* in the middle of tearing things
191 PERLVAR(Iin_eval, U8) /* trap "fatal" errors? */
192 PERLVAR(Itainted, bool) /* using variables controlled by $< */
194 /* This value may be set when embedding for full cleanup */
195 /* 0=none, 1=full, 2=full with checks */
196 /* mod_perl is special, and also assigns a meaning -1 */
197 PERLVARI(Iperl_destruct_level, signed char, 0)
199 PERLVAR(Iperldb, U32)
201 /* pseudo environmental stuff */
202 PERLVAR(Iorigargc, int)
203 PERLVAR(Iorigargv, char **)
204 PERLVAR(Ienvgv, GV *)
205 PERLVAR(Iincgv, GV *)
206 PERLVAR(Ihintgv, GV *)
207 PERLVAR(Iorigfilename, char *)
208 PERLVAR(Idiehook, SV *)
209 PERLVAR(Iwarnhook, SV *)
212 PERLVAR(Ipatchlevel, SV *)
213 PERLVAR(Ilocalpatches, const char * const *)
214 PERLVARI(Isplitstr, const char *, " ")
216 PERLVAR(Iminus_c, bool)
217 PERLVAR(Iminus_n, bool)
218 PERLVAR(Iminus_p, bool)
219 PERLVAR(Iminus_l, bool)
220 PERLVAR(Iminus_a, bool)
221 PERLVAR(Iminus_F, bool)
222 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 */
243 PERLVAR(Iinplace, char *)
244 PERLVAR(Ie_script, SV *)
246 /* magical thingies */
247 PERLVAR(Ibasetime, Time_t) /* $^T */
248 PERLVAR(Iformfeed, SV *) /* $^L */
251 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
252 /* top fd to pass to subprocesses */
253 PERLVAR(Istatusvalue, I32) /* $? */
255 PERLVAR(Istatusvalue_vms,U32)
257 PERLVAR(Istatusvalue_posix,I32)
260 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
261 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
263 /* shortcuts to various I/O objects */
264 PERLVAR(Istdingv, GV *)
265 PERLVAR(Istderrgv, GV *)
266 PERLVAR(Idefgv, GV *)
267 PERLVAR(Iargvgv, GV *)
268 PERLVAR(Iargvoutgv, GV *)
269 PERLVAR(Iargvout_stack, AV *)
271 /* shortcuts to regexp stuff */
272 PERLVAR(Ireplgv, GV *)
274 /* shortcuts to misc objects */
275 PERLVAR(Ierrgv, GV *)
277 /* shortcuts to debugging objects */
279 PERLVAR(IDBline, GV *)
282 =for apidoc mn|GV *|PL_DBsub
283 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
284 the SV which holds the name of the sub being debugged. This is the C
285 variable which corresponds to Perl's $DB::sub variable. See
288 =for apidoc mn|SV *|PL_DBsingle
289 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
290 boolean which indicates whether subs are being single-stepped.
291 Single-stepping is automatically turned on after every step. This is the C
292 variable which corresponds to Perl's $DB::single variable. See
295 =for apidoc mn|SV *|PL_DBtrace
296 Trace variable used when Perl is run in debugging mode, with the B<-d>
297 switch. This is the C variable which corresponds to Perl's $DB::trace
298 variable. See C<PL_DBsingle>.
303 PERLVAR(IDBsub, GV *)
304 PERLVAR(IDBsingle, SV *)
305 PERLVAR(IDBtrace, SV *)
306 PERLVAR(IDBsignal, SV *)
307 PERLVAR(Idbargs, AV *) /* args to call listed by caller function */
310 PERLVAR(Idebstash, HV *) /* symbol table for perldb package */
311 PERLVAR(Iglobalstash, HV *) /* global keyword overrides imported here */
312 PERLVAR(Icurstname, SV *) /* name of current package */
313 PERLVAR(Ibeginav, AV *) /* names of BEGIN subroutines */
314 PERLVAR(Iendav, AV *) /* names of END subroutines */
315 PERLVAR(Iunitcheckav, AV *) /* names of UNITCHECK subroutines */
316 PERLVAR(Icheckav, AV *) /* names of CHECK subroutines */
317 PERLVAR(Iinitav, AV *) /* names of INIT subroutines */
318 PERLVAR(Istrtab, HV *) /* shared string table */
319 PERLVARI(Isub_generation,U32,1) /* incr to invalidate method cache */
321 /* funky return mechanisms */
322 PERLVAR(Iforkprocess, int) /* so do_open |- can return proc# */
324 /* memory management */
325 PERLVAR(Isv_count, I32) /* how many SV* are currently allocated */
326 PERLVAR(Isv_objcount, I32) /* how many objects are currently allocated */
327 PERLVAR(Isv_root, SV*) /* storage for SVs belonging to interp */
328 PERLVAR(Isv_arenaroot, SV*) /* list of areas for garbage collection */
330 /* subprocess state */
331 PERLVAR(Ifdpid, AV *) /* keep fd-to-pid mappings for my_popen */
334 PERLVARI(Iop_mask, char *, NULL) /* masked operations for safe evals */
336 /* current interpreter roots */
337 PERLVAR(Imain_cv, CV *)
338 PERLVAR(Imain_root, OP *)
339 PERLVAR(Imain_start, OP *)
340 PERLVAR(Ieval_root, OP *)
341 PERLVAR(Ieval_start, OP *)
343 /* runtime control stuff */
344 PERLVARI(Icurcopdb, COP *, NULL)
346 PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
347 PERLVAR(Ilastfd, int) /* what to preserve mode on */
348 PERLVAR(Ioldname, char *) /* what to preserve mode on */
349 PERLVAR(IArgv, const char **) /* stuff to free from do_aexec, vfork safe */
350 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
351 /* Elements in this array have ';' appended and are injected as a single line
352 into the tokeniser. You can't put any (literal) newlines into any program
353 you stuff in into this array, as the point where it's injected is expecting
354 a single physical line. */
355 PERLVAR(Ipreambleav, AV *)
356 PERLVAR(Imess_sv, SV *)
357 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
358 /* statics moved here for shared library purposes */
359 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
360 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
361 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
362 PERLVARI(Ilaststype, U16, OP_STAT)
363 PERLVARI(Ilaststatval, int, -1)
365 /* interpreter atexit processing */
366 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
367 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
368 /* list of exit functions */
371 =for apidoc Amn|HV*|PL_modglobal
373 C<PL_modglobal> is a general purpose, interpreter global HV for use by
374 extensions that need to keep information on a per-interpreter basis.
375 In a pinch, it can also be used as a symbol table for extensions
376 to share data among each other. It is a good idea to use keys
377 prefixed by the package name of the extension that owns the data.
382 PERLVAR(Imodglobal, HV *) /* per-interp module data */
384 /* these used to be in global before 5.004_68 */
385 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
387 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
389 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
390 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
391 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
392 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
393 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
395 #ifdef HAVE_INTERP_INTERN
396 PERLVAR(Isys_intern, struct interp_intern)
397 /* platform internals */
400 /* more statics moved here */
401 PERLVAR(IDBcv, CV *) /* from perl.c */
402 PERLVARI(Igeneration, int, 100) /* from op.c */
404 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
405 PERLVARI(Iin_clean_all, bool, FALSE) /* from sv.c */
406 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
407 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
409 PERLVAR(Iuid, Uid_t) /* current real user id */
410 PERLVAR(Ieuid, Uid_t) /* current effective user id */
411 PERLVAR(Igid, Gid_t) /* current real group id */
412 PERLVAR(Iegid, Gid_t) /* current effective group id */
413 PERLVARI(Ian, U32, 0) /* malloc sequence number */
414 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
415 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
416 PERLVAR(Iorigalen, U32)
417 PERLVAR(Iorigenviron, char **)
418 #ifdef PERL_USES_PL_PIDSTATUS
419 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
421 PERLVAR(Iosname, char *) /* operating system */
423 PERLVAR(Isighandlerp, Sighandler_t)
425 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
427 PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
428 PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
430 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
432 PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
435 =for apidoc Amn|SV|PL_sv_undef
436 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
438 =for apidoc Amn|SV|PL_sv_no
439 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
442 =for apidoc Amn|SV|PL_sv_yes
443 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
449 PERLVAR(Isv_undef, SV)
453 PERLVAR(Isubname, SV *) /* name of current subroutine */
455 PERLVAR(Isubline, I32) /* line this subroutine began on */
456 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
458 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
459 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
461 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
462 PERLVAR(Ipad_reset_pending, I32) /* reset pad on next attempted alloc */
464 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
466 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
468 PERLVARI(Iamagic_generation, long, 0)
470 #ifdef USE_LOCALE_COLLATE
471 PERLVAR(Icollation_name,char *) /* Name of current collation */
472 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
473 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
474 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
475 PERLVARI(Icollation_standard, bool, TRUE)
476 /* Assume simple collation */
477 #endif /* USE_LOCALE_COLLATE */
480 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
485 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
489 #ifdef USE_LOCALE_NUMERIC
491 PERLVARI(Inumeric_standard, bool, TRUE)
492 /* Assume simple numerics */
493 PERLVARI(Inumeric_local, bool, TRUE)
494 /* Assume local numerics */
495 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
496 #endif /* !USE_LOCALE_NUMERIC */
498 /* utf8 character classes */
499 PERLVAR(Iutf8_alnum, SV *)
500 PERLVAR(Iutf8_alnumc, SV *)
501 PERLVAR(Iutf8_ascii, SV *)
502 PERLVAR(Iutf8_alpha, SV *)
503 PERLVAR(Iutf8_space, SV *)
504 PERLVAR(Iutf8_cntrl, SV *)
505 PERLVAR(Iutf8_graph, SV *)
506 PERLVAR(Iutf8_digit, SV *)
507 PERLVAR(Iutf8_upper, SV *)
508 PERLVAR(Iutf8_lower, SV *)
509 PERLVAR(Iutf8_print, SV *)
510 PERLVAR(Iutf8_punct, SV *)
511 PERLVAR(Iutf8_xdigit, SV *)
512 PERLVAR(Iutf8_mark, SV *)
513 PERLVAR(Iutf8_toupper, SV *)
514 PERLVAR(Iutf8_totitle, SV *)
515 PERLVAR(Iutf8_tolower, SV *)
516 PERLVAR(Iutf8_tofold, SV *)
517 PERLVAR(Ilast_swash_hv, HV *)
518 PERLVAR(Ilast_swash_tmps, U8 *)
519 PERLVAR(Ilast_swash_slen, STRLEN)
520 PERLVARA(Ilast_swash_key,10, U8)
521 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
524 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
527 PERLVARI(Iglob_index, int, 0)
530 PERLVAR(Iparser, yy_parser *) /* current parser state */
532 PERLVAR(Ibitcount, char *)
534 PERLVAR(Ipsig_ptr, SV**)
535 PERLVAR(Ipsig_name, SV**)
537 #if defined(PERL_IMPLICIT_SYS)
538 PERLVAR(IMem, struct IPerlMem*)
539 PERLVAR(IMemShared, struct IPerlMem*)
540 PERLVAR(IMemParse, struct IPerlMem*)
541 PERLVAR(IEnv, struct IPerlEnv*)
542 PERLVAR(IStdIO, struct IPerlStdIO*)
543 PERLVAR(ILIO, struct IPerlLIO*)
544 PERLVAR(IDir, struct IPerlDir*)
545 PERLVAR(ISock, struct IPerlSock*)
546 PERLVAR(IProc, struct IPerlProc*)
549 PERLVAR(Iptr_table, PTR_TBL_t*)
550 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
552 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
555 #ifdef USE_LOCALE_NUMERIC
557 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
561 #if defined(USE_ITHREADS)
562 PERLVAR(Iregex_pad, SV**) /* Shortcut into the array of
564 PERLVAR(Iregex_padav, AV*) /* All regex objects, indexed via the
565 values in op_pmoffset of pmop.
566 Entry 0 is an SV whose PV is a
567 "packed" list of IVs listing
568 the now-free slots in the array */
571 #ifdef USE_REENTRANT_API
572 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
575 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
576 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
579 PERLVARI(Iperlio, PerlIO *,NULL)
580 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
581 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
584 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
586 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
588 PERLVAR(Iutf8_idstart, SV *)
589 PERLVAR(Iutf8_idcont, SV *)
591 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
593 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
594 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
596 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
598 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
600 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
602 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
604 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
606 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
608 /* Hooks to shared SVs and locks. */
609 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
610 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
612 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
614 /* This reference ensures that the mathoms are linked with perl */
615 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
617 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
619 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
621 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
623 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
625 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
627 /* The last unconditional member of the interpreter structure when 5.10.0 was
628 released. The offset of the end of this is baked into a global variable in
629 any shared perl library which will allow a sanity test in future perl
631 #define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
633 #ifdef PERL_IMPLICIT_CONTEXT
634 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
635 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
636 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
637 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
641 #ifdef PERL_TRACK_MEMPOOL
642 /* For use with the memory debugging code in util.c */
643 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
646 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
647 /* File descriptor to talk to the child which dumps scalars. */
648 PERLVARI(Idumper_fd, int, -1)
651 /* Stores the PPID */
652 #ifdef THREADS_HAVE_PIDS
653 PERLVARI(Ippid, IV, 0)
657 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
658 /* (MAD = Misc Attribute Decoration) */
659 PERLVARI(Ixmlfp, PerlIO *,NULL)
662 #ifdef PL_OP_SLAB_ALLOC
663 PERLVAR(IOpPtr,I32 **)
664 PERLVARI(IOpSpace,I32,0)
665 PERLVAR(IOpSlab,I32 *)
668 #ifdef PERL_DEBUG_READONLY_OPS
669 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
670 PERLVARI(Islab_count, U32, 0) /* Size of the array */
673 /* Can shared object be destroyed */
674 PERLVARI(Idestroyhook, destroyable_proc_t, MEMBER_TO_FPTR(Perl_sv_destroyable))
676 #ifdef DEBUG_LEAKING_SCALARS
677 PERLVARI(Isv_serial, U32, 0) /* SV serial number, used in sv.c */
680 PERLVARI(Ibreakable_sub_generation, U32, 0)
682 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
683 * above on where there are gaps which currently will be structure padding. */
685 /* Within a stable branch, new variables must be added to the very end, before
686 * this comment, for binary compatibility (the offsets of the old members must
688 * (Don't forget to add your variable also to perl_clone()!)
689 * XSUB.h provides wrapper functions via perlapi.h that make this
690 * irrelevant, but not all code may be expected to #include XSUB.h.