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 regen/embed.pl to propagate changes! */
20 /* New variables must be added to the very end for binary compatibility. */
22 /* Don't forget to add your variable also to perl_clone()! */
24 /* The 'I' prefix is only needed for vars that need appropriate #defines
25 * generated when built with or without MULTIPLICITY. It is also used
26 * to generate the appropriate export list for win32. If the variable
27 * needs to be initialized, use PERLVARI.
29 * When building without MULTIPLICITY, these variables will be truly global.
31 * Important ones in the first cache line (if alignment is done right) */
33 PERLVAR(I, stack_sp, SV **) /* top of the stack */
35 PERLVAR(I, opsave, OP *)
37 PERLVAR(I, op, OP *) /* currently executing op */
39 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
41 PERLVAR(I, stack_base, SV **)
42 PERLVAR(I, stack_max, SV **)
44 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
45 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
46 present always, as -DDEUBGGING must be binary compatible with non. */
47 PERLVARI(I, scopestack_name, const char * *, NULL)
48 PERLVAR(I, scopestack_ix, I32)
49 PERLVAR(I, scopestack_max, I32)
51 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
52 LEAVEing scopes we've ENTERed */
53 PERLVAR(I, savestack_ix, I32)
54 PERLVAR(I, savestack_max, I32)
56 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
57 PERLVARI(I, tmps_ix, I32, -1)
58 PERLVARI(I, tmps_floor, I32, -1)
59 PERLVAR(I, tmps_max, I32)
60 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
63 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
65 PERLVAR(I, markstack_ptr, I32 *)
66 PERLVAR(I, markstack_max, I32 *)
68 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
69 PERLVAR(I, Xpv, XPV *) /* used to hold temporary values */
72 =for apidoc Amn|STRLEN|PL_na
74 A convenience variable which is typically used with C<SvPV> when one
75 doesn't care about the length of the string. It is usually more efficient
76 to either declare a local variable and use that instead or to use the
82 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
86 PERLVAR(I, statbuf, Stat_t)
87 PERLVAR(I, statcache, Stat_t) /* _ */
88 PERLVAR(I, statgv, GV *)
89 PERLVARI(I, statname, SV *, NULL)
92 PERLVAR(I, timesbuf, struct tms)
95 /* Fields used by magic variables such as $@, $/ and so on */
96 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
99 =for apidoc mn|SV*|PL_rs
101 The input record separator - C<$/> in Perl space.
103 =for apidoc mn|GV*|PL_last_in_gv
105 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
107 =for apidoc mn|GV*|PL_ofsgv
109 The glob containing the output field separator - C<*,> in Perl space.
114 PERLVAR(I, rs, SV *) /* input record separator $/ */
115 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
116 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
117 PERLVAR(I, defoutgv, GV *) /* default FH for output */
118 PERLVARI(I, chopset, const char *, " \n-") /* $: */
119 PERLVAR(I, formtarget, SV *)
120 PERLVAR(I, bodytarget, SV *)
121 PERLVAR(I, toptarget, SV *)
124 PERLVAR(I, defstash, HV *) /* main symbol table */
125 PERLVAR(I, curstash, HV *) /* symbol table for current package */
127 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
128 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
129 PERLVAR(I, curcop, COP *)
130 PERLVAR(I, curstack, AV *) /* THE STACK */
131 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
132 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
135 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
136 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
137 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
139 /* statics "owned" by various functions */
140 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
142 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
145 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
146 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
147 PERLVAR(I, firstgv, GV *) /* $a */
148 PERLVAR(I, secondgv, GV *) /* $b */
151 PERLVAR(I, efloatbuf, char *)
152 PERLVAR(I, efloatsize, STRLEN)
156 PERLVAR(I, reg_state, struct re_save_state)
158 PERLVAR(I, regdummy, regnode) /* from regcomp.c */
160 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
164 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
165 PERLVARI(I, rehash_seed_set, bool, FALSE) /* 582 hash initialized? */
167 PERLVARA(I, colors,6, char *) /* from regcomp.c */
170 =for apidoc Amn|peep_t|PL_peepp
172 Pointer to the per-subroutine peephole optimiser. This is a function
173 that gets called at the end of compilation of a Perl subroutine (or
174 equivalently independent piece of Perl code) to perform fixups of
175 some ops and to perform small-scale optimisations. The function is
176 called once for each subroutine that is compiled, and is passed, as sole
177 parameter, a pointer to the op that is the entry point to the subroutine.
178 It modifies the op tree in place.
180 The peephole optimiser should never be completely replaced. Rather,
181 add code to it by wrapping the existing optimiser. The basic way to do
182 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
183 If the new code wishes to operate on ops throughout the subroutine's
184 structure, rather than just at the top level, it is likely to be more
185 convenient to wrap the L</PL_rpeepp> hook.
190 PERLVARI(I, peepp, peep_t, Perl_peep)
193 =for apidoc Amn|peep_t|PL_rpeepp
195 Pointer to the recursive peephole optimiser. This is a function
196 that gets called at the end of compilation of a Perl subroutine (or
197 equivalently independent piece of Perl code) to perform fixups of some
198 ops and to perform small-scale optimisations. The function is called
199 once for each chain of ops linked through their C<op_next> fields;
200 it is recursively called to handle each side chain. It is passed, as
201 sole parameter, a pointer to the op that is at the head of the chain.
202 It modifies the op tree in place.
204 The peephole optimiser should never be completely replaced. Rather,
205 add code to it by wrapping the existing optimiser. The basic way to do
206 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
207 If the new code wishes to operate only on ops at a subroutine's top level,
208 rather than throughout the structure, it is likely to be more convenient
209 to wrap the L</PL_peepp> hook.
214 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
217 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
219 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.
220 This allows extensions to free any extra attribute they have locally attached to an OP.
221 It is also assured to first fire for the parent OP and then for its kids.
223 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.
228 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
231 PERLVARI(I, reginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */
232 PERLVARI(I, watchaddr, char **, 0)
233 PERLVAR(I, watchok, char *)
235 /* the currently active slab in a chain of slabs of regmatch states,
236 * and the currently active state within that slab */
238 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
239 PERLVAR(I, regmatch_state, regmatch_state *)
241 /* Put anything new that is pointer aligned here. */
243 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
244 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
245 PERLVAR(I, colorset, bool) /* from regcomp.c */
246 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
247 PERLVAR(I, tainted, bool) /* using variables controlled by $< */
248 PERLVAR(I, tainting, bool) /* doing taint checks */
250 /* This value may be set when embedding for full cleanup */
251 /* 0=none, 1=full, 2=full with checks */
252 /* mod_perl is special, and also assigns a meaning -1 */
253 PERLVARI(I, perl_destruct_level, signed char, 0)
255 /* current phase the interpreter is in */
256 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
258 PERLVAR(I, perldb, U32)
260 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
262 /* pseudo environmental stuff */
263 PERLVAR(I, origargc, int)
264 PERLVAR(I, origargv, char **)
265 PERLVAR(I, envgv, GV *)
266 PERLVAR(I, incgv, GV *)
267 PERLVAR(I, hintgv, GV *)
268 PERLVAR(I, origfilename, char *)
269 PERLVAR(I, diehook, SV *)
270 PERLVAR(I, warnhook, SV *)
273 PERLVAR(I, patchlevel, SV *)
274 PERLVAR(I, apiversion, SV *)
275 PERLVAR(I, localpatches, const char * const *)
276 PERLVARI(I, splitstr, const char *, " ")
278 PERLVAR(I, minus_c, bool)
279 PERLVAR(I, minus_n, bool)
280 PERLVAR(I, minus_p, bool)
281 PERLVAR(I, minus_l, bool)
282 PERLVAR(I, minus_a, bool)
283 PERLVAR(I, minus_F, bool)
284 PERLVAR(I, doswitches, bool)
285 PERLVAR(I, minus_E, bool)
289 =for apidoc mn|bool|PL_dowarn
291 The C variable which corresponds to Perl's $^W warning variable.
296 PERLVAR(I, dowarn, U8)
297 PERLVAR(I, sawampersand, bool) /* must save all match strings */
298 PERLVAR(I, unsafe, bool)
299 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
300 PERLVAR(I, srand_called, bool)
301 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
302 /* Space for a U16 */
303 PERLVAR(I, inplace, char *)
304 PERLVAR(I, e_script, SV *)
306 /* magical thingies */
307 PERLVAR(I, basetime, Time_t) /* $^T */
308 PERLVAR(I, formfeed, SV *) /* $^L */
311 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
312 /* top fd to pass to subprocesses */
313 PERLVAR(I, statusvalue, I32) /* $? */
315 PERLVAR(I, statusvalue_vms, U32)
317 PERLVAR(I, statusvalue_posix, I32)
320 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
321 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
323 /* shortcuts to various I/O objects */
324 PERLVAR(I, stdingv, GV *) /* *STDIN */
325 PERLVAR(I, stderrgv, GV *) /* *STDERR */
326 PERLVAR(I, defgv, GV *)
327 PERLVAR(I, argvgv, GV *) /* *ARGV */
328 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
329 PERLVAR(I, argvout_stack, AV *)
331 /* shortcuts to regexp stuff */
332 PERLVAR(I, replgv, GV *) /* *^R */
334 /* shortcuts to misc objects */
335 PERLVAR(I, errgv, GV *) /* *@ */
337 /* shortcuts to debugging objects */
338 PERLVAR(I, DBgv, GV *) /* *DB::DB */
339 PERLVAR(I, DBline, GV *) /* *DB::line */
342 =for apidoc mn|GV *|PL_DBsub
343 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
344 the SV which holds the name of the sub being debugged. This is the C
345 variable which corresponds to Perl's $DB::sub variable. See
348 =for apidoc mn|SV *|PL_DBsingle
349 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
350 boolean which indicates whether subs are being single-stepped.
351 Single-stepping is automatically turned on after every step. This is the C
352 variable which corresponds to Perl's $DB::single variable. See
355 =for apidoc mn|SV *|PL_DBtrace
356 Trace variable used when Perl is run in debugging mode, with the B<-d>
357 switch. This is the C variable which corresponds to Perl's $DB::trace
358 variable. See C<PL_DBsingle>.
363 PERLVAR(I, DBsub, GV *) /* *DB::sub */
364 PERLVAR(I, DBsingle, SV *) /* $DB::single */
365 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
366 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
367 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
370 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
371 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
372 PERLVAR(I, curstname, SV *) /* name of current package */
373 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
374 PERLVAR(I, endav, AV *) /* names of END subroutines */
375 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
376 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
377 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
378 PERLVAR(I, strtab, HV *) /* shared string table */
379 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
381 /* funky return mechanisms */
382 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
384 /* memory management */
385 PERLVAR(I, sv_count, I32) /* how many SV* are currently allocated */
386 PERLVAR(I, sv_objcount, I32) /* how many objects are currently allocated */
387 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
388 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
390 /* subprocess state */
391 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
394 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
396 /* current interpreter roots */
397 PERLVAR(I, main_cv, CV *)
398 PERLVAR(I, main_root, OP *)
399 PERLVAR(I, main_start, OP *)
400 PERLVAR(I, eval_root, OP *)
401 PERLVAR(I, eval_start, OP *)
403 /* runtime control stuff */
404 PERLVARI(I, curcopdb, COP *, NULL)
406 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
407 PERLVAR(I, lastfd, int) /* what to preserve mode on */
408 PERLVAR(I, oldname, char *) /* what to preserve mode on */
409 PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
410 PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
411 /* Elements in this array have ';' appended and are injected as a single line
412 into the tokeniser. You can't put any (literal) newlines into any program
413 you stuff in into this array, as the point where it's injected is expecting
414 a single physical line. */
415 PERLVAR(I, preambleav, AV *)
416 PERLVAR(I, mess_sv, SV *)
417 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
418 /* statics moved here for shared library purposes */
419 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
420 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
421 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
422 PERLVARI(I, laststype, U16, OP_STAT)
423 PERLVARI(I, laststatval, int, -1)
425 /* interpreter atexit processing */
426 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
427 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
428 /* list of exit functions */
431 =for apidoc Amn|HV*|PL_modglobal
433 C<PL_modglobal> is a general purpose, interpreter global HV for use by
434 extensions that need to keep information on a per-interpreter basis.
435 In a pinch, it can also be used as a symbol table for extensions
436 to share data among each other. It is a good idea to use keys
437 prefixed by the package name of the extension that owns the data.
442 PERLVAR(I, modglobal, HV *) /* per-interp module data */
444 /* these used to be in global before 5.004_68 */
445 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
447 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
449 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
450 PERLVAR(I, comppad, AV *) /* storage for lexically scoped temporaries */
451 PERLVAR(I, comppad_name, AV *) /* variable names for "my" variables */
452 PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
453 PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
455 #ifdef HAVE_INTERP_INTERN
456 PERLVAR(I, sys_intern, struct interp_intern)
457 /* platform internals */
460 /* more statics moved here */
461 PERLVAR(I, DBcv, CV *) /* from perl.c */
462 PERLVARI(I, generation, int, 100) /* from op.c */
464 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
465 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
466 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
467 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
469 PERLVAR(I, uid, Uid_t) /* current real user id */
470 PERLVAR(I, euid, Uid_t) /* current effective user id */
471 PERLVAR(I, gid, Gid_t) /* current real group id */
472 PERLVAR(I, egid, Gid_t) /* current effective group id */
473 PERLVARI(I, an, U32, 0) /* malloc sequence number */
476 /* exercise wrap-around */
477 #define PERL_COP_SEQMAX (U32_MAX-50)
479 #define PERL_COP_SEQMAX 0
481 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
482 #undef PERL_COP_SEQMAX
484 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
485 PERLVAR(I, origalen, U32)
486 PERLVAR(I, origenviron, char **)
487 #ifdef PERL_USES_PL_PIDSTATUS
488 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
490 PERLVAR(I, osname, char *) /* operating system */
492 PERLVAR(I, sighandlerp, Sighandler_t)
494 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
496 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
498 PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
500 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
503 =for apidoc Amn|SV|PL_sv_undef
504 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
506 =for apidoc Amn|SV|PL_sv_no
507 This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
510 =for apidoc Amn|SV|PL_sv_yes
511 This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
517 PERLVAR(I, sv_undef, SV)
518 PERLVAR(I, sv_no, SV)
519 PERLVAR(I, sv_yes, SV)
521 PERLVAR(I, subname, SV *) /* name of current subroutine */
523 PERLVAR(I, subline, I32) /* line this subroutine began on */
524 PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
526 PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
527 PERLVAR(I, padix, I32) /* max used index in current "register" pad */
529 PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
531 PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
533 PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
535 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
536 PERLVARI(I, breakable_sub_gen, U32, 0)
538 PERLVARI(I, amagic_generation, long, 0)
540 #ifdef USE_LOCALE_COLLATE
541 PERLVAR(I, collation_name, char *) /* Name of current collation */
542 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
543 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
544 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
545 PERLVARI(I, collation_standard, bool, TRUE)
546 /* Assume simple collation */
547 #endif /* USE_LOCALE_COLLATE */
550 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
555 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
559 #ifdef USE_LOCALE_NUMERIC
561 PERLVARI(I, numeric_standard, bool, TRUE)
562 /* Assume simple numerics */
563 PERLVARI(I, numeric_local, bool, TRUE)
564 /* Assume local numerics */
565 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
566 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
568 #endif /* !USE_LOCALE_NUMERIC */
570 /* utf8 character classes */
571 PERLVAR(I, utf8_alnum, SV *)
572 PERLVAR(I, utf8_alpha, SV *)
573 PERLVAR(I, utf8_space, SV *)
574 PERLVAR(I, utf8_graph, SV *)
575 PERLVAR(I, utf8_digit, SV *)
576 PERLVAR(I, utf8_upper, SV *)
577 PERLVAR(I, utf8_lower, SV *)
578 PERLVAR(I, utf8_print, SV *)
579 PERLVAR(I, utf8_punct, SV *)
580 PERLVAR(I, utf8_xdigit, SV *)
581 PERLVAR(I, utf8_mark, SV *)
582 PERLVAR(I, utf8_X_begin, SV *)
583 PERLVAR(I, utf8_X_extend, SV *)
584 PERLVAR(I, utf8_X_prepend, SV *)
585 PERLVAR(I, utf8_X_non_hangul, SV *)
586 PERLVAR(I, utf8_X_L, SV *)
587 PERLVAR(I, utf8_X_LV, SV *)
588 PERLVAR(I, utf8_X_LVT, SV *)
589 PERLVAR(I, utf8_X_T, SV *)
590 PERLVAR(I, utf8_X_V, SV *)
591 PERLVAR(I, utf8_X_LV_LVT_V, SV *)
592 PERLVAR(I, utf8_toupper, SV *)
593 PERLVAR(I, utf8_totitle, SV *)
594 PERLVAR(I, utf8_tolower, SV *)
595 PERLVAR(I, utf8_tofold, SV *)
596 PERLVAR(I, last_swash_hv, HV *)
597 PERLVAR(I, last_swash_tmps, U8 *)
598 PERLVAR(I, last_swash_slen, STRLEN)
599 PERLVARA(I, last_swash_key,10, U8)
600 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-10 */
603 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
606 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
608 PERLVARI(I, glob_index, int, 0)
611 PERLVAR(I, parser, yy_parser *) /* current parser state */
613 /* Array of signal handlers, indexed by signal number, through which the C
614 signal handler dispatches. */
615 PERLVAR(I, psig_ptr, SV **)
616 /* Array of names of signals, indexed by signal number, for (re)use as the first
617 argument to a signal handler. Only one block of memory is allocated for
618 both psig_name and psig_ptr. */
619 PERLVAR(I, psig_name, SV **)
621 #if defined(PERL_IMPLICIT_SYS)
622 PERLVAR(I, Mem, struct IPerlMem *)
623 PERLVAR(I, MemShared, struct IPerlMem *)
624 PERLVAR(I, MemParse, struct IPerlMem *)
625 PERLVAR(I, Env, struct IPerlEnv *)
626 PERLVAR(I, StdIO, struct IPerlStdIO *)
627 PERLVAR(I, LIO, struct IPerlLIO *)
628 PERLVAR(I, Dir, struct IPerlDir *)
629 PERLVAR(I, Sock, struct IPerlSock *)
630 PERLVAR(I, Proc, struct IPerlProc *)
633 PERLVAR(I, ptr_table, PTR_TBL_t *)
634 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
636 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
639 #if defined(USE_ITHREADS)
640 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
642 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
643 values in op_pmoffset of pmop.
644 Entry 0 is an SV whose PV is a
645 "packed" list of IVs listing
646 the now-free slots in the array */
649 #ifdef USE_REENTRANT_API
650 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
653 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
654 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
657 PERLVARI(I, perlio, PerlIOl *, NULL)
658 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
659 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
662 PERLVARI(I, encoding, SV *, NULL) /* character encoding */
664 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
666 PERLVAR(I, utf8_idstart, SV *)
667 PERLVAR(I, utf8_idcont, SV *)
668 PERLVAR(I, utf8_xidstart, SV *)
669 PERLVAR(I, utf8_perl_idstart, SV *)
670 PERLVAR(I, utf8_xidcont, SV *)
672 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
674 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
675 PERLVARI(I, unitcheckav_save, AV *, NULL)
676 /* save UNITCHECK{}s when compiling */
678 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
680 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
682 /* Hooks to shared SVs and locks. */
683 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
684 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
686 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
688 /* This reference ensures that the mathoms are linked with perl */
689 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
691 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
693 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
695 /* Can shared object be destroyed */
696 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
699 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
702 PERLVARI(I, hash_seed, UV, 0) /* Hash initializer */
704 PERLVARI(I, rehash_seed, UV, 0) /* 582 hash initializer */
706 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
708 /* Register of known Method Resolution Orders.
709 What this actually points to is an implementation detail (it may change to
710 a structure incorporating a reference count - use mro_get_from_name to
711 retrieve a C<struct mro_alg *> */
712 PERLVAR(I, registered_mros, HV *)
714 /* Compile-time block start/end hooks */
715 PERLVAR(I, blockhooks, AV *)
717 /* Everything that folds to a given character, for case insensitivity regex
719 PERLVARI(I, utf8_foldclosures, HV *, NULL)
721 /* List of characters that participate in folds (except marks, etc in
722 * multi-char folds) */
723 PERLVARI(I, utf8_foldable, SV *, NULL)
725 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
727 /* Hook for File::Glob */
728 PERLVARI(I, globhook, globhook_t, NULL)
730 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
732 /* The last unconditional member of the interpreter structure when 5.10.0 was
733 released. The offset of the end of this is baked into a global variable in
734 any shared perl library which will allow a sanity test in future perl
736 #define PERL_LAST_5_16_0_INTERP_MEMBER Ireentrant_retint
738 #ifdef PERL_IMPLICIT_CONTEXT
739 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
740 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
741 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
742 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
746 #ifdef PERL_TRACK_MEMPOOL
747 /* For use with the memory debugging code in util.c */
748 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
751 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
752 /* File descriptor to talk to the child which dumps scalars. */
753 PERLVARI(I, dumper_fd, int, -1)
756 /* Stores the PPID */
757 #ifdef THREADS_HAVE_PIDS
758 PERLVARI(I, ppid, IV, 0)
762 PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
763 /* (MAD = Misc Attribute Decoration) */
764 PERLVARI(I, xmlfp, PerlIO *, NULL)
767 #ifdef PL_OP_SLAB_ALLOC
768 PERLVAR(I, OpPtr, I32 **)
769 PERLVARI(I, OpSpace, I32, 0)
770 PERLVAR(I, OpSlab, I32 *)
773 #ifdef PERL_DEBUG_READONLY_OPS
774 PERLVARI(I, slabs, I32**, NULL) /* Array of slabs that have been allocated */
775 PERLVARI(I, slab_count, U32, 0) /* Size of the array */
778 #ifdef DEBUG_LEAKING_SCALARS
779 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
782 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
783 * above on where there are gaps which currently will be structure padding. */
785 /* Within a stable branch, new variables must be added to the very end, before
786 * this comment, for binary compatibility (the offsets of the old members must
788 * (Don't forget to add your variable also to perl_clone()!)
789 * XSUB.h provides wrapper functions via perlapi.h that make this
790 * irrelevant, but not all code may be expected to #include XSUB.h.