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|SV*|PL_ofs_sv
107 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(Iofs_sv, SV *) /* 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 * VOL)
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, VOL 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(Ipreprocess, bool)
218 PERLVAR(Iminus_n, bool)
219 PERLVAR(Iminus_p, bool)
220 PERLVAR(Iminus_l, bool)
221 PERLVAR(Iminus_a, bool)
222 PERLVAR(Iminus_F, bool)
223 PERLVAR(Idoswitches, bool)
225 PERLVAR(Iminus_E, bool)
229 =for apidoc mn|bool|PL_dowarn
231 The C variable which corresponds to Perl's $^W warning variable.
237 PERLVAR(Idoextract, bool)
238 PERLVAR(Isawampersand, bool) /* must save all match strings */
239 PERLVAR(Iunsafe, bool)
240 PERLVAR(Iexit_flags, U8) /* was exit() unexpected, etc. */
241 PERLVAR(Isrand_called, bool)
242 /* Part of internal state, but makes the 16th 1 byte variable in a row. */
243 PERLVAR(Itainting, bool) /* doing taint checks */
244 PERLVAR(Iinplace, char *)
245 PERLVAR(Ie_script, SV *)
247 /* magical thingies */
248 PERLVAR(Ibasetime, Time_t) /* $^T */
249 PERLVAR(Iformfeed, SV *) /* $^L */
252 PERLVARI(Imaxsysfd, I32, MAXSYSFD)
253 /* top fd to pass to subprocesses */
254 PERLVAR(Istatusvalue, I32) /* $? */
256 PERLVAR(Istatusvalue_vms,U32)
258 PERLVAR(Istatusvalue_posix,I32)
261 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
262 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
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, const char **) /* stuff to free from do_aexec, vfork safe */
351 PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
352 /* Elements in this array have ';' appended and are injected as a single line
353 into the tokeniser. You can't put any (literal) newlines into any program
354 you stuff in into this array, as the point where it's injected is expecting
355 a single physical line. */
356 PERLVAR(Ipreambleav, AV *)
357 PERLVAR(Imess_sv, SV *)
358 PERLVAR(Iors_sv, SV *) /* output record separator $\ */
359 /* statics moved here for shared library purposes */
360 PERLVARI(Igensym, I32, 0) /* next symbol for getsym() to define */
361 PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
362 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
363 PERLVARI(Ilaststype, U16, OP_STAT)
364 PERLVARI(Ilaststatval, int, -1)
366 /* interpreter atexit processing */
367 PERLVARI(Iexitlistlen, I32, 0) /* length of same */
368 PERLVARI(Iexitlist, PerlExitListEntry *, NULL)
369 /* list of exit functions */
372 =for apidoc Amn|HV*|PL_modglobal
374 C<PL_modglobal> is a general purpose, interpreter global HV for use by
375 extensions that need to keep information on a per-interpreter basis.
376 In a pinch, it can also be used as a symbol table for extensions
377 to share data among each other. It is a good idea to use keys
378 prefixed by the package name of the extension that owns the data.
383 PERLVAR(Imodglobal, HV *) /* per-interp module data */
385 /* these used to be in global before 5.004_68 */
386 PERLVARI(Iprofiledata, U32 *, NULL) /* table of ops, counts */
388 PERLVAR(Icompiling, COP) /* compiling/done executing marker */
390 PERLVAR(Icompcv, CV *) /* currently compiling subroutine */
391 PERLVAR(Icomppad, AV *) /* storage for lexically scoped temporaries */
392 PERLVAR(Icomppad_name, AV *) /* variable names for "my" variables */
393 PERLVAR(Icomppad_name_fill, I32) /* last "introduced" variable offset */
394 PERLVAR(Icomppad_name_floor, I32) /* start of vars in innermost block */
396 #ifdef HAVE_INTERP_INTERN
397 PERLVAR(Isys_intern, struct interp_intern)
398 /* platform internals */
401 /* more statics moved here */
402 PERLVAR(IDBcv, CV *) /* from perl.c */
403 PERLVARI(Igeneration, int, 100) /* from op.c */
405 PERLVARI(Iin_clean_objs,bool, FALSE) /* from sv.c */
406 PERLVARI(Iin_clean_all, bool, FALSE) /* from sv.c */
407 PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
408 PERLVARI(Isavebegin, bool, FALSE) /* save BEGINs for compiler */
410 PERLVAR(Iuid, Uid_t) /* current real user id */
411 PERLVAR(Ieuid, Uid_t) /* current effective user id */
412 PERLVAR(Igid, Gid_t) /* current real group id */
413 PERLVAR(Iegid, Gid_t) /* current effective group id */
414 PERLVARI(Ian, U32, 0) /* malloc sequence number */
415 PERLVARI(Icop_seqmax, U32, 0) /* statement sequence number */
416 PERLVARI(Ievalseq, U32, 0) /* eval sequence number */
417 PERLVAR(Iorigalen, U32)
418 PERLVAR(Iorigenviron, char **)
419 #ifdef PERL_USES_PL_PIDSTATUS
420 PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
422 PERLVAR(Iosname, char *) /* operating system */
424 PERLVAR(Isighandlerp, Sighandler_t)
426 PERLVARA(Ibody_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
428 PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
429 PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
431 PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
433 PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
436 =for apidoc Amn|SV|PL_sv_undef
437 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
439 =for apidoc Amn|SV|PL_sv_no
440 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
443 =for apidoc Amn|SV|PL_sv_yes
444 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
450 PERLVAR(Isv_undef, SV)
454 PERLVAR(Isubname, SV *) /* name of current subroutine */
456 PERLVAR(Isubline, I32) /* line this subroutine began on */
457 PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
459 PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
460 PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
462 PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
463 PERLVAR(Ipad_reset_pending, I32) /* reset pad on next attempted alloc */
465 PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
467 PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
469 PERLVARI(Iamagic_generation, long, 0)
471 #ifdef USE_LOCALE_COLLATE
472 PERLVAR(Icollation_name,char *) /* Name of current collation */
473 PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
474 PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
475 PERLVARI(Icollation_ix, U32, 0) /* Collation generation index */
476 PERLVARI(Icollation_standard, bool, TRUE)
477 /* Assume simple collation */
478 #endif /* USE_LOCALE_COLLATE */
481 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
486 PERLVARI(Iutf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
490 #ifdef USE_LOCALE_NUMERIC
492 PERLVARI(Inumeric_standard, bool, TRUE)
493 /* Assume simple numerics */
494 PERLVARI(Inumeric_local, bool, TRUE)
495 /* Assume local numerics */
496 PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
497 #endif /* !USE_LOCALE_NUMERIC */
499 /* utf8 character classes */
500 PERLVAR(Iutf8_alnum, SV *)
501 PERLVAR(Iutf8_alnumc, SV *)
502 PERLVAR(Iutf8_ascii, SV *)
503 PERLVAR(Iutf8_alpha, SV *)
504 PERLVAR(Iutf8_space, SV *)
505 PERLVAR(Iutf8_cntrl, SV *)
506 PERLVAR(Iutf8_graph, SV *)
507 PERLVAR(Iutf8_digit, SV *)
508 PERLVAR(Iutf8_upper, SV *)
509 PERLVAR(Iutf8_lower, SV *)
510 PERLVAR(Iutf8_print, SV *)
511 PERLVAR(Iutf8_punct, SV *)
512 PERLVAR(Iutf8_xdigit, SV *)
513 PERLVAR(Iutf8_mark, SV *)
514 PERLVAR(Iutf8_toupper, SV *)
515 PERLVAR(Iutf8_totitle, SV *)
516 PERLVAR(Iutf8_tolower, SV *)
517 PERLVAR(Iutf8_tofold, SV *)
518 PERLVAR(Ilast_swash_hv, HV *)
519 PERLVAR(Ilast_swash_tmps, U8 *)
520 PERLVAR(Ilast_swash_slen, STRLEN)
521 PERLVARA(Ilast_swash_key,10, U8)
522 PERLVAR(Ilast_swash_klen, U8) /* Only needs to store 0-10 */
525 PERLVARI(Icryptseen, bool, FALSE) /* has fast crypt() been initialized? */
530 PERLVARI(Iglob_index, int, 0)
533 PERLVAR(Iparser, yy_parser *) /* current parser state */
535 PERLVAR(Ibitcount, char *)
537 /* Array of signal handlers, indexed by signal number, through which the C
538 signal handler dispatches. */
539 PERLVAR(Ipsig_ptr, SV**)
540 /* Array of names of signals, indexed by signal number, for (re)use as the first
541 argument to a signal handler. */
542 PERLVAR(Ipsig_name, SV**)
544 #if defined(PERL_IMPLICIT_SYS)
545 PERLVAR(IMem, struct IPerlMem*)
546 PERLVAR(IMemShared, struct IPerlMem*)
547 PERLVAR(IMemParse, struct IPerlMem*)
548 PERLVAR(IEnv, struct IPerlEnv*)
549 PERLVAR(IStdIO, struct IPerlStdIO*)
550 PERLVAR(ILIO, struct IPerlLIO*)
551 PERLVAR(IDir, struct IPerlDir*)
552 PERLVAR(ISock, struct IPerlSock*)
553 PERLVAR(IProc, struct IPerlProc*)
556 PERLVAR(Iptr_table, PTR_TBL_t*)
557 PERLVARI(Ibeginav_save, AV*, NULL) /* save BEGIN{}s when compiling */
559 PERLVAR(Ibody_arenas, void*) /* pointer to list of body-arenas */
562 #ifdef USE_LOCALE_NUMERIC
564 PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
568 #if defined(USE_ITHREADS)
569 PERLVAR(Iregex_pad, SV**) /* Shortcut into the array of
571 PERLVAR(Iregex_padav, AV*) /* All regex objects, indexed via the
572 values in op_pmoffset of pmop.
573 Entry 0 is an array of IVs listing
574 the now-free slots in the array */
577 #ifdef USE_REENTRANT_API
578 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
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 PERLVAR(Iutf8_idstart, SV *)
595 PERLVAR(Iutf8_idcont, SV *)
597 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
599 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
600 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
602 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
604 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
606 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
608 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
610 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
612 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
614 /* Hooks to shared SVs and locks. */
615 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
616 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
618 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
620 /* This reference ensures that the mathoms are linked with perl */
621 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
623 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
625 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
627 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
629 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
631 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
633 /* The last unconditional member of the interpreter structure when 5.10.0 was
634 released. The offset of the end of this is baked into a global variable in
635 any shared perl library which will allow a sanity test in future perl
637 #define PERL_LAST_5_10_0_INTERP_MEMBER Iisarev
639 #ifdef PERL_IMPLICIT_CONTEXT
640 PERLVARI(Imy_cxt_size, int, 0) /* size of PL_my_cxt_list */
641 PERLVARI(Imy_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
642 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
643 PERLVARI(Imy_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
647 #ifdef PERL_TRACK_MEMPOOL
648 /* For use with the memory debugging code in util.c */
649 PERLVAR(Imemory_debug_header, struct perl_memory_debug_header)
652 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
653 /* File descriptor to talk to the child which dumps scalars. */
654 PERLVARI(Idumper_fd, int, -1)
657 /* Stores the PPID */
658 #ifdef THREADS_HAVE_PIDS
659 PERLVARI(Ippid, IV, 0)
663 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
664 /* (MAD = Misc Attribute Decoration) */
665 PERLVARI(Ixmlfp, PerlIO *,NULL)
668 #ifdef PL_OP_SLAB_ALLOC
669 PERLVAR(IOpPtr,I32 **)
670 PERLVARI(IOpSpace,I32,0)
671 PERLVAR(IOpSlab,I32 *)
674 #ifdef PERL_DEBUG_READONLY_OPS
675 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
676 PERLVARI(Islab_count, U32, 0) /* Size of the array */
679 /* Can shared object be destroyed */
680 PERLVARI(Idestroyhook, destroyable_proc_t, MEMBER_TO_FPTR(Perl_sv_destroyable))
682 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
683 PERLVARI(Ibreakable_sub_gen, U32, 0)
685 #ifdef DEBUG_LEAKING_SCALARS
686 PERLVARI(Isv_serial, U32, 0) /* SV serial number, used in sv.c */
689 /* Register of known Method Resolution Orders.
690 What this actually points to is an implementation detail (it may change to
691 a structure incorporating a reference count - use mro_get_from_name to
692 retrieve a C<struct mro_alg *> */
693 PERLVAR(Iregistered_mros, HV *)
695 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
696 * above on where there are gaps which currently will be structure padding. */
698 /* Within a stable branch, new variables must be added to the very end, before
699 * this comment, for binary compatibility (the offsets of the old members must
701 * (Don't forget to add your variable also to perl_clone()!)
702 * XSUB.h provides wrapper functions via perlapi.h that make this
703 * irrelevant, but not all code may be expected to #include XSUB.h.