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 /* 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 mod()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(Icurcop, COP *)
130 PERLVAR(Icurstack, AV *) /* THE STACK */
131 PERLVAR(Icurstackinfo, PERL_SI *) /* current stack + context */
132 PERLVAR(Imainstack, AV *) /* the stack when nothing funny is
135 PERLVAR(Itop_env, JMPENV *) /* ptr to current sigjmp environment */
136 PERLVAR(Istart_env, JMPENV) /* empty startup sigjmp environment */
137 PERLVARI(Ierrors, SV *, NULL) /* outstanding queued errors */
139 /* statics "owned" by various functions */
140 PERLVAR(Ihv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
142 PERLVAR(Ilastgotoprobe, OP*) /* from pp_ctl.c */
145 PERLVAR(Isortcop, OP *) /* user defined sort routine */
146 PERLVAR(Isortstash, HV *) /* which is in some package or other */
147 PERLVAR(Ifirstgv, GV *) /* $a */
148 PERLVAR(Isecondgv, GV *) /* $b */
151 PERLVAR(Iefloatbuf, char *)
152 PERLVAR(Iefloatsize, STRLEN)
156 PERLVAR(Iscreamfirst, I32 *)
157 PERLVAR(Iscreamnext, I32 *)
158 PERLVAR(Ilastscream, SV *)
160 PERLVAR(Ireg_state, struct re_save_state)
162 PERLVAR(Iregdummy, regnode) /* from regcomp.c */
164 PERLVARI(Idumpindent, U16, 4) /* number of blanks per dump
168 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
169 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
171 PERLVARA(Icolors,6, char *) /* from regcomp.c */
173 PERLVARI(Ipeepp, peep_t, MEMBER_TO_FPTR(Perl_peep))
174 /* Pointer to peephole optimizer */
177 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
179 When non-C<NULL>, the function pointed by this variable will be called each time an OP is freed with the corresponding OP as the argument.
180 This allows extensions to free any extra attribute they have locally attached to an OP.
181 It is also assured to first fire for the parent OP and then for its kids.
183 When you replace this variable, it is considered a good practice to store the possibly previously installed hook and that you recall it inside your own.
188 PERLVARI(Iopfreehook, Perl_ophook_t, 0) /* op_free() hook */
190 PERLVARI(Imaxscream, I32, -1)
191 PERLVARI(Ireginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
192 PERLVARI(Iwatchaddr, char **, 0)
193 PERLVAR(Iwatchok, char *)
195 /* the currently active slab in a chain of slabs of regmatch states,
196 * and the currently active state within that slab */
198 PERLVARI(Iregmatch_slab, regmatch_slab *, NULL)
199 PERLVAR(Iregmatch_state, regmatch_state *)
201 /* Put anything new that is pointer aligned here. */
203 PERLVAR(Idelaymagic, U16) /* ($<,$>) = ... */
204 PERLVAR(Ilocalizing, U8) /* are we processing a local() list? */
205 PERLVAR(Icolorset, bool) /* from regcomp.c */
206 PERLVARI(Idirty, bool, FALSE) /* in the middle of tearing things
208 PERLVAR(Iin_eval, U8) /* trap "fatal" errors? */
209 PERLVAR(Itainted, bool) /* using variables controlled by $< */
211 /* This value may be set when embedding for full cleanup */
212 /* 0=none, 1=full, 2=full with checks */
213 /* mod_perl is special, and also assigns a meaning -1 */
214 PERLVARI(Iperl_destruct_level, signed char, 0)
216 PERLVAR(Iperldb, U32)
218 /* pseudo environmental stuff */
219 PERLVAR(Iorigargc, int)
220 PERLVAR(Iorigargv, char **)
221 PERLVAR(Ienvgv, GV *)
222 PERLVAR(Iincgv, GV *)
223 PERLVAR(Ihintgv, GV *)
224 PERLVAR(Iorigfilename, char *)
225 PERLVAR(Idiehook, SV *)
226 PERLVAR(Iwarnhook, SV *)
229 PERLVAR(Ipatchlevel, SV *)
230 PERLVAR(Ilocalpatches, const char * const *)
231 PERLVARI(Isplitstr, const char *, " ")
233 PERLVAR(Iminus_c, bool)
234 PERLVAR(Iminus_n, bool)
235 PERLVAR(Iminus_p, bool)
236 PERLVAR(Iminus_l, bool)
237 PERLVAR(Iminus_a, bool)
238 PERLVAR(Iminus_F, bool)
239 PERLVAR(Idoswitches, bool)
240 PERLVAR(Iminus_E, bool)
244 =for apidoc mn|bool|PL_dowarn
246 The C variable which corresponds to Perl's $^W warning variable.
252 PERLVAR(Idoextract, bool)
253 PERLVAR(Isawampersand, bool) /* must save all match strings */
254 PERLVAR(Iunsafe, bool)
255 PERLVAR(Iexit_flags, U8) /* was exit() unexpected, etc. */
256 PERLVAR(Isrand_called, bool)
257 /* Part of internal state, but makes the 16th 1 byte variable in a row. */
258 PERLVAR(Itainting, bool) /* doing taint checks */
260 PERLVAR(Iinplace, char *)
261 PERLVAR(Ie_script, SV *)
263 /* magical thingies */
264 PERLVAR(Ibasetime, Time_t) /* $^T */
265 PERLVAR(Iformfeed, SV *) /* $^L */
268 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
269 /* top fd to pass to subprocesses */
270 PERLVAR(Istatusvalue, I32) /* $? */
272 PERLVAR(Istatusvalue_vms,U32)
274 PERLVAR(Istatusvalue_posix,I32)
277 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
278 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
280 /* shortcuts to various I/O objects */
281 PERLVAR(Istdingv, GV *)
282 PERLVAR(Istderrgv, GV *)
283 PERLVAR(Idefgv, GV *)
284 PERLVAR(Iargvgv, GV *)
285 PERLVAR(Iargvoutgv, GV *)
286 PERLVAR(Iargvout_stack, AV *)
288 /* shortcuts to regexp stuff */
289 PERLVAR(Ireplgv, GV *)
291 /* shortcuts to misc objects */
292 PERLVAR(Ierrgv, GV *)
294 /* shortcuts to debugging objects */
296 PERLVAR(IDBline, GV *)
299 =for apidoc mn|GV *|PL_DBsub
300 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
301 the SV which holds the name of the sub being debugged. This is the C
302 variable which corresponds to Perl's $DB::sub variable. See
305 =for apidoc mn|SV *|PL_DBsingle
306 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
307 boolean which indicates whether subs are being single-stepped.
308 Single-stepping is automatically turned on after every step. This is the C
309 variable which corresponds to Perl's $DB::single variable. See
312 =for apidoc mn|SV *|PL_DBtrace
313 Trace variable used when Perl is run in debugging mode, with the B<-d>
314 switch. This is the C variable which corresponds to Perl's $DB::trace
315 variable. See C<PL_DBsingle>.
320 PERLVAR(IDBsub, GV *)
321 PERLVAR(IDBsingle, SV *)
322 PERLVAR(IDBtrace, SV *)
323 PERLVAR(IDBsignal, SV *)
324 PERLVAR(Idbargs, AV *) /* args to call listed by caller function */
327 PERLVAR(Idebstash, HV *) /* symbol table for perldb package */
328 PERLVAR(Iglobalstash, HV *) /* global keyword overrides imported here */
329 PERLVAR(Icurstname, SV *) /* name of current package */
330 PERLVAR(Ibeginav, AV *) /* names of BEGIN subroutines */
331 PERLVAR(Iendav, AV *) /* names of END subroutines */
332 PERLVAR(Iunitcheckav, AV *) /* names of UNITCHECK subroutines */
333 PERLVAR(Icheckav, AV *) /* names of CHECK subroutines */
334 PERLVAR(Iinitav, AV *) /* names of INIT subroutines */
335 PERLVAR(Istrtab, HV *) /* shared string table */
336 PERLVARI(Isub_generation,U32,1) /* incr to invalidate method cache */
338 /* funky return mechanisms */
339 PERLVAR(Iforkprocess, int) /* so do_open |- can return proc# */
341 /* memory management */
342 PERLVAR(Isv_count, I32) /* how many SV* are currently allocated */
343 PERLVAR(Isv_objcount, I32) /* how many objects are currently allocated */
344 PERLVAR(Isv_root, SV*) /* storage for SVs belonging to interp */
345 PERLVAR(Isv_arenaroot, SV*) /* list of areas for garbage collection */
347 /* subprocess state */
348 PERLVAR(Ifdpid, AV *) /* keep fd-to-pid mappings for my_popen */
351 PERLVARI(Iop_mask, char *, NULL) /* masked operations for safe evals */
353 /* current interpreter roots */
354 PERLVAR(Imain_cv, CV *)
355 PERLVAR(Imain_root, OP *)
356 PERLVAR(Imain_start, OP *)
357 PERLVAR(Ieval_root, OP *)
358 PERLVAR(Ieval_start, OP *)
360 /* runtime control stuff */
361 PERLVARI(Icurcopdb, COP *, NULL)
363 PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
364 PERLVAR(Ilastfd, int) /* what to preserve mode on */
365 PERLVAR(Ioldname, char *) /* what to preserve mode on */
366 PERLVAR(IArgv, const char **) /* stuff to free from do_aexec, vfork safe */
367 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
368 /* Elements in this array have ';' appended and are injected as a single line
369 into the tokeniser. You can't put any (literal) newlines into any program
370 you stuff in into this array, as the point where it's injected is expecting
371 a single physical line. */
372 PERLVAR(Ipreambleav, AV *)
373 PERLVAR(Imess_sv, SV *)
374 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
375 /* statics moved here for shared library purposes */
376 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
377 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
378 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
379 PERLVARI(Ilaststype, U16, OP_STAT)
380 PERLVARI(Ilaststatval, int, -1)
382 /* interpreter atexit processing */
383 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
384 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
385 /* list of exit functions */
388 =for apidoc Amn|HV*|PL_modglobal
390 C<PL_modglobal> is a general purpose, interpreter global HV for use by
391 extensions that need to keep information on a per-interpreter basis.
392 In a pinch, it can also be used as a symbol table for extensions
393 to share data among each other. It is a good idea to use keys
394 prefixed by the package name of the extension that owns the data.
399 PERLVAR(Imodglobal, HV *) /* per-interp module data */
401 /* these used to be in global before 5.004_68 */
402 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
404 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
406 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
407 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
408 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
409 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
410 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
412 #ifdef HAVE_INTERP_INTERN
413 PERLVAR(Isys_intern, struct interp_intern)
414 /* platform internals */
417 /* more statics moved here */
418 PERLVAR(IDBcv, CV *) /* from perl.c */
419 PERLVARI(Igeneration, int, 100) /* from op.c */
421 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
422 PERLVARI(Iin_clean_all, bool, FALSE) /* from sv.c */
423 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
424 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
426 PERLVAR(Iuid, Uid_t) /* current real user id */
427 PERLVAR(Ieuid, Uid_t) /* current effective user id */
428 PERLVAR(Igid, Gid_t) /* current real group id */
429 PERLVAR(Iegid, Gid_t) /* current effective group id */
430 PERLVARI(Ian, U32, 0) /* malloc sequence number */
431 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
432 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
433 PERLVAR(Iorigalen, U32)
434 PERLVAR(Iorigenviron, char **)
435 #ifdef PERL_USES_PL_PIDSTATUS
436 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
438 PERLVAR(Iosname, char *) /* operating system */
440 PERLVAR(Isighandlerp, Sighandler_t)
442 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
444 PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
445 PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
447 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
449 PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
452 =for apidoc Amn|SV|PL_sv_undef
453 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
455 =for apidoc Amn|SV|PL_sv_no
456 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
459 =for apidoc Amn|SV|PL_sv_yes
460 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
466 PERLVAR(Isv_undef, SV)
470 PERLVAR(Isubname, SV *) /* name of current subroutine */
472 PERLVAR(Isubline, I32) /* line this subroutine began on */
473 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
475 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
476 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
478 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
480 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
482 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
484 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
485 PERLVARI(Ibreakable_sub_gen, U32, 0)
487 PERLVARI(Iamagic_generation, long, 0)
489 #ifdef USE_LOCALE_COLLATE
490 PERLVAR(Icollation_name,char *) /* Name of current collation */
491 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
492 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
493 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
494 PERLVARI(Icollation_standard, bool, TRUE)
495 /* Assume simple collation */
496 #endif /* USE_LOCALE_COLLATE */
499 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
504 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
508 #ifdef USE_LOCALE_NUMERIC
510 PERLVARI(Inumeric_standard, bool, TRUE)
511 /* Assume simple numerics */
512 PERLVARI(Inumeric_local, bool, TRUE)
513 /* Assume local numerics */
514 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
515 #endif /* !USE_LOCALE_NUMERIC */
517 /* utf8 character classes */
518 PERLVAR(Iutf8_alnum, SV *)
519 PERLVAR(Iutf8_ascii, SV *)
520 PERLVAR(Iutf8_alpha, SV *)
521 PERLVAR(Iutf8_space, SV *)
522 PERLVAR(Iutf8_perl_space, SV *)
523 PERLVAR(Iutf8_perl_word, SV *)
524 PERLVAR(Iutf8_posix_digit, SV *)
525 PERLVAR(Iutf8_cntrl, SV *)
526 PERLVAR(Iutf8_graph, SV *)
527 PERLVAR(Iutf8_digit, SV *)
528 PERLVAR(Iutf8_upper, SV *)
529 PERLVAR(Iutf8_lower, SV *)
530 PERLVAR(Iutf8_print, SV *)
531 PERLVAR(Iutf8_punct, SV *)
532 PERLVAR(Iutf8_xdigit, SV *)
533 PERLVAR(Iutf8_mark, SV *)
534 PERLVAR(Iutf8_X_begin, SV *)
535 PERLVAR(Iutf8_X_extend, SV *)
536 PERLVAR(Iutf8_X_prepend, SV *)
537 PERLVAR(Iutf8_X_non_hangul, SV *)
538 PERLVAR(Iutf8_X_L, SV *)
539 PERLVAR(Iutf8_X_LV, SV *)
540 PERLVAR(Iutf8_X_LVT, SV *)
541 PERLVAR(Iutf8_X_T, SV *)
542 PERLVAR(Iutf8_X_V, SV *)
543 PERLVAR(Iutf8_X_LV_LVT_V, SV *)
544 PERLVAR(Iutf8_toupper, SV *)
545 PERLVAR(Iutf8_totitle, SV *)
546 PERLVAR(Iutf8_tolower, SV *)
547 PERLVAR(Iutf8_tofold, SV *)
548 PERLVAR(Ilast_swash_hv, HV *)
549 PERLVAR(Ilast_swash_tmps, U8 *)
550 PERLVAR(Ilast_swash_slen, STRLEN)
551 PERLVARA(Ilast_swash_key,10, U8)
552 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
555 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
558 PERLVAR(Ipad_reset_pending, bool) /* reset pad on next attempted alloc */
560 PERLVARI(Iglob_index, int, 0)
563 PERLVAR(Iparser, yy_parser *) /* current parser state */
565 /* Array of signal handlers, indexed by signal number, through which the C
566 signal handler dispatches. */
567 PERLVAR(Ipsig_ptr, SV**)
568 /* Array of names of signals, indexed by signal number, for (re)use as the first
569 argument to a signal handler. Only one block of memory is allocated for
570 both psig_name and psig_ptr. */
571 PERLVAR(Ipsig_name, SV**)
573 #if defined(PERL_IMPLICIT_SYS)
574 PERLVAR(IMem, struct IPerlMem*)
575 PERLVAR(IMemShared, struct IPerlMem*)
576 PERLVAR(IMemParse, struct IPerlMem*)
577 PERLVAR(IEnv, struct IPerlEnv*)
578 PERLVAR(IStdIO, struct IPerlStdIO*)
579 PERLVAR(ILIO, struct IPerlLIO*)
580 PERLVAR(IDir, struct IPerlDir*)
581 PERLVAR(ISock, struct IPerlSock*)
582 PERLVAR(IProc, struct IPerlProc*)
585 PERLVAR(Iptr_table, PTR_TBL_t*)
586 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
588 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
591 #ifdef USE_LOCALE_NUMERIC
593 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
597 #if defined(USE_ITHREADS)
598 PERLVAR(Iregex_pad, SV**) /* Shortcut into the array of
600 PERLVAR(Iregex_padav, AV*) /* All regex objects, indexed via the
601 values in op_pmoffset of pmop.
602 Entry 0 is an SV whose PV is a
603 "packed" list of IVs listing
604 the now-free slots in the array */
607 #ifdef USE_REENTRANT_API
608 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
611 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
612 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
615 PERLVARI(Iperlio, PerlIO *,NULL)
616 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
617 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
620 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
622 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
624 PERLVAR(Iutf8_idstart, SV *)
625 PERLVAR(Iutf8_idcont, SV *)
627 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
629 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
630 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
632 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
634 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
636 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
638 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
640 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
642 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
644 /* Hooks to shared SVs and locks. */
645 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
646 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
648 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
650 /* This reference ensures that the mathoms are linked with perl */
651 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
653 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
655 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
657 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
659 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
661 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
663 /* The last unconditional member of the interpreter structure when 5.10.0 was
664 released. The offset of the end of this is baked into a global variable in
665 any shared perl library which will allow a sanity test in future perl
667 #define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
669 #ifdef PERL_IMPLICIT_CONTEXT
670 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
671 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
672 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
673 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
677 #ifdef PERL_TRACK_MEMPOOL
678 /* For use with the memory debugging code in util.c */
679 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
682 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
683 /* File descriptor to talk to the child which dumps scalars. */
684 PERLVARI(Idumper_fd, int, -1)
687 /* Stores the PPID */
688 #ifdef THREADS_HAVE_PIDS
689 PERLVARI(Ippid, IV, 0)
693 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
694 /* (MAD = Misc Attribute Decoration) */
695 PERLVARI(Ixmlfp, PerlIO *,NULL)
698 #ifdef PL_OP_SLAB_ALLOC
699 PERLVAR(IOpPtr,I32 **)
700 PERLVARI(IOpSpace,I32,0)
701 PERLVAR(IOpSlab,I32 *)
704 #ifdef PERL_DEBUG_READONLY_OPS
705 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
706 PERLVARI(Islab_count, U32, 0) /* Size of the array */
709 /* Can shared object be destroyed */
710 PERLVARI(Idestroyhook, destroyable_proc_t, MEMBER_TO_FPTR(Perl_sv_destroyable))
712 #ifdef DEBUG_LEAKING_SCALARS
713 PERLVARI(Isv_serial, U32, 0) /* SV serial number, used in sv.c */
716 /* Register of known Method Resolution Orders.
717 What this actually points to is an implementation detail (it may change to
718 a structure incorporating a reference count - use mro_get_from_name to
719 retrieve a C<struct mro_alg *> */
720 PERLVAR(Iregistered_mros, HV *)
722 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
723 * above on where there are gaps which currently will be structure padding. */
725 /* Within a stable branch, new variables must be added to the very end, before
726 * this comment, for binary compatibility (the offsets of the old members must
728 * (Don't forget to add your variable also to perl_clone()!)
729 * XSUB.h provides wrapper functions via perlapi.h that make this
730 * irrelevant, but not all code may be expected to #include XSUB.h.