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 /* 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 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 */
554 PERLVAR(Ipsig_pend, int *) /* per-signal "count" of pending */
555 PERLVARI(Isig_pending, int,0) /* Number if highest signal pending */
558 PERLVAR(Itaint_warn, bool) /* taint warns instead of dying */
559 PERLVAR(Iutf8locale, bool) /* utf8 locale detected */
560 PERLVARI(Irehash_seed_set, bool, FALSE) /* 582 hash initialized? */
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**) /* All regex objects */
570 PERLVAR(Iregex_padav, AV*) /* All regex objects */
574 #ifdef USE_REENTRANT_API
575 PERLVAR(Ireentrant_buffer, REENTR*) /* here we store the _r buffers */
580 PERLVARI(Imadskills, bool, FALSE) /* preserve all syntactic info */
581 /* (MAD = Misc Attribute Decoration) */
582 PERLVARI(Ixmlfp, PerlIO *,NULL)
585 PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
586 PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
589 PERLVARI(Iperlio, PerlIO *,NULL)
590 PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
591 PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
594 PERLVARI(Iencoding, SV*, NULL) /* character encoding */
596 PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
598 #ifdef PL_OP_SLAB_ALLOC
599 PERLVAR(IOpPtr,I32 **)
600 PERLVARI(IOpSpace,I32,0)
601 PERLVAR(IOpSlab,I32 *)
604 PERLVAR(Iutf8_idstart, SV *)
605 PERLVAR(Iutf8_idcont, SV *)
607 PERLVAR(Isort_RealCmp, SVCOMPARE_t)
609 PERLVARI(Icheckav_save, AV*, NULL) /* save CHECK{}s when compiling */
610 PERLVARI(Iunitcheckav_save, AV*, NULL) /* save UNITCHECK{}s when compiling */
612 PERLVARI(Iclocktick, long, 0) /* this many times() ticks in a second */
614 PERLVARI(Iin_load_module, int, 0) /* to prevent recursions in PerlIO_find_layer */
616 PERLVAR(Iunicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
618 PERLVAR(Isignals, U32) /* Using which pre-5.8 signals */
620 PERLVAR(Ireentrant_retint, int) /* Integer return value from reentrant functions */
622 PERLVAR(Istashcache, HV *) /* Cache to speed up S_method_common */
624 /* Hooks to shared SVs and locks. */
625 PERLVARI(Isharehook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
626 PERLVARI(Ilockhook, share_proc_t, MEMBER_TO_FPTR(Perl_sv_nosharing))
628 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
630 /* This reference ensures that the mathoms are linked with perl */
631 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
633 PERLVARI(Iunlockhook, share_proc_t, MEMBER_TO_FPTR(PERL_UNLOCK_HOOK))
635 PERLVARI(Ithreadhook, thrhook_proc_t, MEMBER_TO_FPTR(Perl_nothreadhook))
637 /* Stores the PPID */
638 #ifdef THREADS_HAVE_PIDS
639 PERLVARI(Ippid, IV, 0)
642 PERLVARI(Ihash_seed, UV, 0) /* Hash initializer */
644 PERLVAR(IDBassertion, SV *)
646 PERLVARI(Irehash_seed, UV, 0) /* 582 hash initializer */
648 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
649 /* File descriptor to talk to the child which dumps scalars. */
650 PERLVARI(Idumper_fd, int, -1)
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 PERL_DEBUG_READONLY_OPS
667 PERLVARI(Islabs, I32**, NULL) /* Array of slabs that have been allocated */
668 PERLVARI(Islab_count, U32, 0) /* Size of the array */
671 PERLVARI(Iisarev, HV*, NULL) /* Reverse map of @ISA dependencies */
673 /* If you are adding a U8 or U16, see the 'Space' comments above on where
674 * there are gaps which currently will be structure padding. */
676 /* Within a stable branch, new variables must be added to the very end, before
677 * this comment, for binary compatibility (the offsets of the old members must
679 * (Don't forget to add your variable also to perl_clone()!)
680 * XSUB.h provides wrapper functions via perlapi.h that make this
681 * irrelevant, but not all code may be expected to #include XSUB.h.