This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Various updates and fixes to some of the SysV IPC ops and their tests
[perl5.git] / intrpvar.h
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1/* intrpvar.h
2 *
3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
1129b882 4 * 2006, 2007, 2008 by Larry Wall and others
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5 *
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.
8 *
9 */
10
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11#include "handy.h"
12
907b3e23 13/*
70b05c7c 14=for apidoc_section Per-Interpreter Variables
907b3e23 15*/
49f531da 16
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17/* These variables are per-interpreter in threaded/multiplicity builds,
18 * global otherwise.
19
d7cb65f2 20 * Don't forget to re-run regen/embed.pl to propagate changes! */
cb68f92d 21
ab686ae8 22/* New variables must be added to the very end for binary compatibility. */
6537fe72 23
b8393ac7 24/* DON'T FORGET to add your variable also to perl_clone()! (in sv.c) */
02506efe 25
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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
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28 * to generate the appropriate export list for win32. If the variable
29 * needs to be initialized, use PERLVARI.
cb68f92d 30 *
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31 * When building without MULTIPLICITY, these variables will be truly global.
32 *
33 * Important ones in the first cache line (if alignment is done right) */
34
115ff745 35PERLVAR(I, stack_sp, SV **) /* top of the stack */
115ff745 36PERLVAR(I, op, OP *) /* currently executing op */
115ff745 37PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
907b3e23 38
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39PERLVAR(I, stack_base, SV **)
40PERLVAR(I, stack_max, SV **)
907b3e23 41
115ff745 42PERLVAR(I, savestack, ANY *) /* items that need to be restored when
907b3e23 43 LEAVEing scopes we've ENTERed */
115ff745
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44PERLVAR(I, savestack_ix, I32)
45PERLVAR(I, savestack_max, I32)
46
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47PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
48PERLVAR(I, scopestack_ix, I32)
49PERLVAR(I, scopestack_max, I32)
50
115ff745 51PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
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52PERLVARI(I, tmps_ix, SSize_t, -1)
53PERLVARI(I, tmps_floor, SSize_t, -1)
ba367634 54PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */
19bc2726 55
115ff745 56PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
907b3e23 57 remembering */
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58PERLVAR(I, markstack_ptr, I32 *)
59PERLVAR(I, markstack_max, I32 *)
907b3e23 60
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61PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
62
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63#ifdef PERL_HASH_RANDOMIZE_KEYS
64#ifdef USE_PERL_PERTURB_KEYS
65PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
66#endif
0e0ab621 67PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
6a5b4183 68#endif
19bc2726 69PERLVAR(I, strtab, HV *) /* shared string table */
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70/* prog counter for the currently executing OP_MULTIDEREF Used to signal
71 * to S_find_uninit_var() where we are */
72PERLVAR(I, multideref_pc, UNOP_AUX_item *)
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73
74/* Fields used by magic variables such as $@, $/ and so on */
75PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
5585e758 76PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
19bc2726 77
bc2f1ca1 78PERLVAR(I, tainting, bool) /* ? doing taint checks */
d48c660d 79PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
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80
81/* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
89 *
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
93 */
19bc2726 94PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
a68090fe 95
1172c104 96/*
b5282d7c 97=for apidoc mn|U8|PL_dowarn
19bc2726 98
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99The C variable that roughly corresponds to Perl's C<$^W> warning variable.
100However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
101collection of flag bits.
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102
103=cut
104*/
105
106PERLVAR(I, dowarn, U8)
107
108#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
109# define PERL___I -1
110#else
111# define PERL___I 1
112#endif
113PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
114#undef PERL___I
115
c07b34e4 116/*
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117=for apidoc Amn|GV *|PL_defgv
118
119The GV representing C<*_>. Useful for access to C<$_>.
120
121=cut
122*/
123
124PERLVAR(I, localizing, U8) /* are we processing a local() list? */
125PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
126PERLVAR(I, defgv, GV *) /* the *_ glob */
127
128/*
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129=for apidoc Amn|HV*|PL_curstash
130
131The stash for the package code will be compiled into.
132
133=cut
134*/
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135
136/* Stashes */
137PERLVAR(I, defstash, HV *) /* main symbol table */
138PERLVAR(I, curstash, HV *) /* symbol table for current package */
139
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140/*
141=for apidoc Amn|COP*|PL_curcop
142
143The currently active COP (control op) roughly representing the current
144statement in the source.
145
146=cut
147*/
148
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149PERLVAR(I, curcop, COP *)
150PERLVAR(I, curstack, AV *) /* THE STACK */
151PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
152PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
153 happening */
154
155/* memory management */
156PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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157
158PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
159PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
160
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161/* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
162PERLVARI(I, reg_curpm, PMOP*, NULL)
163
19bc2726 164/* the currently active slab in a chain of slabs of regmatch states,
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165 * and the currently active state within that slab. This stack of states
166 * is shared amongst re-entrant calls to the regex engine */
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167
168PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
169PERLVAR(I, regmatch_state, regmatch_state *)
170
171PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
172
173/*
174=for apidoc Amn|SV|PL_sv_undef
175This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
176
177=for apidoc Amn|SV|PL_sv_no
fbe13c60 178This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
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179C<&PL_sv_no>.
180
181=for apidoc Amn|SV|PL_sv_yes
fbe13c60 182This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
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183C<&PL_sv_yes>.
184
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185=for apidoc Amn|SV|PL_sv_zero
186This readonly SV has a zero numeric value and a C<"0"> string value. It's
187similar to C<L</PL_sv_no>> except for its string value. Can be used as a
188cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
189C<&PL_sv_zero>. Introduced in 5.28.
190
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191=cut
192*/
193
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194#ifdef MULTIPLICITY
195PERLVAR(I, sv_yes, SV)
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196PERLVAR(I, sv_undef, SV)
197PERLVAR(I, sv_no, SV)
5a6c2837 198PERLVAR(I, sv_zero, SV)
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199#else
200/* store the immortals as an array to ensure they are contiguous in
201 * memory: makes SvIMMORTAL_INTERP(sv) possible */
202PERLVARA(I, sv_immortals, 4, SV)
203#endif
5a6c2837 204
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205PERLVAR(I, padname_undef, PADNAME)
206PERLVAR(I, padname_const, PADNAME)
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207
208/*
209=for apidoc Cmn||PL_Sv
210
211A scratch pad SV for whatever temporary use you need. Chiefly used as a
212fallback by macros on platforms where L<perlapi/PERL_USE_GCC_BRACE_GROUPS>> is
213unavailable, and which would otherwise would evaluate their SV parameter more
214than once.
215
216=cut
217*/
218PERLVAR(I, Sv, SV *)
219
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220PERLVAR(I, parser, yy_parser *) /* current parser state */
221
222PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
223
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224
225/*
226=for apidoc Amn|STRLEN|PL_na
227
228A convenience variable which is typically used with C<SvPV> when one
229doesn't care about the length of the string. It is usually more efficient
230to either declare a local variable and use that instead or to use the
231C<SvPV_nolen> macro.
232
233=cut
234*/
235
115ff745 236PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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237 Not Applicable */
238
239/* stat stuff */
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240PERLVAR(I, statcache, Stat_t) /* _ */
241PERLVAR(I, statgv, GV *)
242PERLVARI(I, statname, SV *, NULL)
907b3e23 243
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244/*
245=for apidoc mn|SV*|PL_rs
246
247The input record separator - C<$/> in Perl space.
248
249=for apidoc mn|GV*|PL_last_in_gv
250
154e47c8 251The GV which was last used for a filehandle input operation. (C<< <FH> >>)
907b3e23 252
e23d9e2f 253=for apidoc mn|GV*|PL_ofsgv
907b3e23 254
e23d9e2f 255The glob containing the output field separator - C<*,> in Perl space.
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256
257=cut
258*/
259
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260PERLVAR(I, rs, SV *) /* input record separator $/ */
261PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
262PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
263PERLVAR(I, defoutgv, GV *) /* default FH for output */
264PERLVARI(I, chopset, const char *, " \n-") /* $: */
265PERLVAR(I, formtarget, SV *)
266PERLVAR(I, bodytarget, SV *)
267PERLVAR(I, toptarget, SV *)
907b3e23 268
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269
270PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
271PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
907b3e23 272
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273PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
274PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
275PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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276
277/* statics "owned" by various functions */
115ff745 278PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 279
115ff745 280PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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281
282/* sort stuff */
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283PERLVAR(I, sortcop, OP *) /* user defined sort routine */
284PERLVAR(I, sortstash, HV *) /* which is in some package or other */
285PERLVAR(I, firstgv, GV *) /* $a */
286PERLVAR(I, secondgv, GV *) /* $b */
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287
288/* float buffer */
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289PERLVAR(I, efloatbuf, char *)
290PERLVAR(I, efloatsize, STRLEN)
907b3e23 291
115ff745 292PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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293 indentation level */
294
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295/*
296=for apidoc Amn|U8|PL_exit_flags
297
298Contains flags controlling perl's behaviour on exit():
299
300=over
301
302=item * C<PERL_EXIT_DESTRUCT_END>
303
304If set, END blocks are executed when the interpreter is destroyed.
305This is normally set by perl itself after the interpreter is
306constructed.
307
308=item * C<PERL_EXIT_ABORT>
309
310Call C<abort()> on exit. This is used internally by perl itself to
311abort if exit is called while processing exit.
312
313=item * C<PERL_EXIT_WARN>
314
315Warn on exit.
316
317=item * C<PERL_EXIT_EXPECTED>
318
319Set by the L<perlfunc/exit> operator.
320
321=back
322
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323=for apidoc Amnh||PERL_EXIT_EXPECTED
324=for apidoc Amnh||PERL_EXIT_ABORT
325=for apidoc Amnh||PERL_EXIT_DESTRUCT_END
326=for apidoc Amnh||PERL_EXIT_WARN
327
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328=cut
329*/
330
e914d9bb 331PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 332
115ff745 333PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
31f05a37 334PERLVAR(I, in_utf8_CTYPE_locale, bool)
165a1c52 335PERLVAR(I, in_utf8_COLLATE_locale, bool)
b8df1494 336PERLVAR(I, in_utf8_turkic_locale, bool)
bffa51e2 337#if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
49d7d366 338PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
bffa51e2 339#endif
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340PERLVARA(I, locale_utf8ness, 256, char)
341
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342#ifdef USE_LOCALE_CTYPE
343 PERLVAR(I, warn_locale, SV *)
344#endif
907b3e23 345
87c1d905 346PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
907b3e23 347
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348/*
349=for apidoc Amn|peep_t|PL_peepp
350
351Pointer to the per-subroutine peephole optimiser. This is a function
352that gets called at the end of compilation of a Perl subroutine (or
353equivalently independent piece of Perl code) to perform fixups of
354some ops and to perform small-scale optimisations. The function is
355called once for each subroutine that is compiled, and is passed, as sole
356parameter, a pointer to the op that is the entry point to the subroutine.
357It modifies the op tree in place.
358
359The peephole optimiser should never be completely replaced. Rather,
360add code to it by wrapping the existing optimiser. The basic way to do
361this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
362If the new code wishes to operate on ops throughout the subroutine's
363structure, rather than just at the top level, it is likely to be more
364convenient to wrap the L</PL_rpeepp> hook.
365
366=cut
367*/
368
115ff745 369PERLVARI(I, peepp, peep_t, Perl_peep)
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370
371/*
372=for apidoc Amn|peep_t|PL_rpeepp
373
374Pointer to the recursive peephole optimiser. This is a function
375that gets called at the end of compilation of a Perl subroutine (or
376equivalently independent piece of Perl code) to perform fixups of some
377ops and to perform small-scale optimisations. The function is called
378once for each chain of ops linked through their C<op_next> fields;
379it is recursively called to handle each side chain. It is passed, as
380sole parameter, a pointer to the op that is at the head of the chain.
381It modifies the op tree in place.
382
383The peephole optimiser should never be completely replaced. Rather,
384add code to it by wrapping the existing optimiser. The basic way to do
385this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
386If the new code wishes to operate only on ops at a subroutine's top level,
387rather than throughout the structure, it is likely to be more convenient
388to wrap the L</PL_peepp> hook.
389
390=cut
391*/
392
115ff745 393PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 394
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395/*
396=for apidoc Amn|Perl_ophook_t|PL_opfreehook
397
398When 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.
399This allows extensions to free any extra attribute they have locally attached to an OP.
400It is also assured to first fire for the parent OP and then for its kids.
401
402When 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.
403
404=cut
405*/
406
115ff745 407PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 408
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409PERLVARI(I, watchaddr, char **, 0)
410PERLVAR(I, watchok, char *)
907b3e23 411
115ff745 412PERLVAR(I, perldb, U32)
d95e864f 413
115ff745 414PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 415
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416PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
417
49f531da 418/* pseudo environmental stuff */
115ff745
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419PERLVAR(I, origargc, int)
420PERLVAR(I, origargv, char **)
421PERLVAR(I, envgv, GV *)
422PERLVAR(I, incgv, GV *)
423PERLVAR(I, hintgv, GV *)
424PERLVAR(I, origfilename, char *)
9a189793 425PERLVARI(I, xsubfilename, const char *, NULL)
115ff745
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426PERLVAR(I, diehook, SV *)
427PERLVAR(I, warnhook, SV *)
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428
429/* switches */
115ff745 430PERLVAR(I, patchlevel, SV *)
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431PERLVAR(I, localpatches, const char * const *)
432PERLVARI(I, splitstr, const char *, " ")
433
434PERLVAR(I, minus_c, bool)
435PERLVAR(I, minus_n, bool)
436PERLVAR(I, minus_p, bool)
437PERLVAR(I, minus_l, bool)
438PERLVAR(I, minus_a, bool)
439PERLVAR(I, minus_F, bool)
440PERLVAR(I, doswitches, bool)
441PERLVAR(I, minus_E, bool)
954c1994 442
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443PERLVAR(I, inplace, char *)
444PERLVAR(I, e_script, SV *)
49f531da 445
115ff745 446PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 447
115ff745 448PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 449 /* top fd to pass to subprocesses */
115ff745 450PERLVAR(I, statusvalue, I32) /* $? */
49f531da 451#ifdef VMS
115ff745 452PERLVAR(I, statusvalue_vms, U32)
e5218da5 453#else
115ff745 454PERLVAR(I, statusvalue_posix, I32)
49f531da
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455#endif
456
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457PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
458PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 459
49f531da 460/* shortcuts to various I/O objects */
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461PERLVAR(I, stdingv, GV *) /* *STDIN */
462PERLVAR(I, stderrgv, GV *) /* *STDERR */
115ff745
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463PERLVAR(I, argvgv, GV *) /* *ARGV */
464PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
465PERLVAR(I, argvout_stack, AV *)
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466
467/* shortcuts to regexp stuff */
115ff745 468PERLVAR(I, replgv, GV *) /* *^R */
49f531da
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469
470/* shortcuts to misc objects */
115ff745 471PERLVAR(I, errgv, GV *) /* *@ */
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472
473/* shortcuts to debugging objects */
115ff745
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474PERLVAR(I, DBgv, GV *) /* *DB::DB */
475PERLVAR(I, DBline, GV *) /* *DB::line */
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476
477/*
2eb25c99 478=for apidoc mn|GV *|PL_DBsub
954c1994
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479When Perl is run in debugging mode, with the B<-d> switch, this GV contains
480the SV which holds the name of the sub being debugged. This is the C
481variable which corresponds to Perl's $DB::sub variable. See
fbe13c60 482C<L</PL_DBsingle>>.
954c1994 483
2eb25c99 484=for apidoc mn|SV *|PL_DBsingle
954c1994 485When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 486boolean which indicates whether subs are being single-stepped.
954c1994
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487Single-stepping is automatically turned on after every step. This is the C
488variable which corresponds to Perl's $DB::single variable. See
fbe13c60 489C<L</PL_DBsub>>.
954c1994 490
2eb25c99 491=for apidoc mn|SV *|PL_DBtrace
954c1994
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492Trace variable used when Perl is run in debugging mode, with the B<-d>
493switch. This is the C variable which corresponds to Perl's $DB::trace
fbe13c60 494variable. See C<L</PL_DBsingle>>.
954c1994
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495
496=cut
497*/
498
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499PERLVAR(I, DBsub, GV *) /* *DB::sub */
500PERLVAR(I, DBsingle, SV *) /* $DB::single */
501PERLVAR(I, DBtrace, SV *) /* $DB::trace */
502PERLVAR(I, DBsignal, SV *) /* $DB::signal */
503PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
49f531da 504
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505PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
506
49f531da 507/* symbol tables */
115ff745
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508PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
509PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
510PERLVAR(I, curstname, SV *) /* name of current package */
511PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
512PERLVAR(I, endav, AV *) /* names of END subroutines */
513PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
514PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
515PERLVAR(I, initav, AV *) /* names of INIT subroutines */
49f531da 516
49f531da 517/* subprocess state */
115ff745 518PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
49f531da
NIS
519
520/* internal state */
115ff745 521PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 522
49f531da 523/* current interpreter roots */
115ff745
NC
524PERLVAR(I, main_cv, CV *)
525PERLVAR(I, main_root, OP *)
526PERLVAR(I, main_start, OP *)
527PERLVAR(I, eval_root, OP *)
528PERLVAR(I, eval_start, OP *)
49f531da
NIS
529
530/* runtime control stuff */
115ff745 531PERLVARI(I, curcopdb, COP *, NULL)
49f531da 532
115ff745
NC
533PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
534PERLVAR(I, lastfd, int) /* what to preserve mode on */
535PERLVAR(I, oldname, char *) /* what to preserve mode on */
00accf8d
NC
536/* Elements in this array have ';' appended and are injected as a single line
537 into the tokeniser. You can't put any (literal) newlines into any program
538 you stuff in into this array, as the point where it's injected is expecting
539 a single physical line. */
115ff745
NC
540PERLVAR(I, preambleav, AV *)
541PERLVAR(I, mess_sv, SV *)
542PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
19bc2726 543
79968a97
NC
544/* funky return mechanisms */
545PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
546
71eebe1e 547/* statics moved here for shared library purposes */
115ff745
NC
548PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
549PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
550PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
551PERLVARI(I, laststype, U16, OP_STAT)
19bc2726 552
115ff745 553PERLVARI(I, laststatval, int, -1)
d4cce5f1 554
19bc2726
DM
555PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
556 assignment? */
557
4b556e6c 558/* interpreter atexit processing */
115ff745
NC
559PERLVARI(I, exitlistlen, I32, 0) /* length of same */
560PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 561 /* list of exit functions */
954c1994
GS
562
563/*
564=for apidoc Amn|HV*|PL_modglobal
565
7889fe52 566C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 567extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
568In a pinch, it can also be used as a symbol table for extensions
569to share data among each other. It is a good idea to use keys
954c1994
GS
570prefixed by the package name of the extension that owns the data.
571
572=cut
573*/
574
115ff745 575PERLVAR(I, modglobal, HV *) /* per-interp module data */
cb68f92d
GS
576
577/* these used to be in global before 5.004_68 */
115ff745 578PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 579
115ff745 580PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 581
115ff745 582PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb 583PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
d12be05d
DM
584PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
585PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
4b556e6c
JD
586
587#ifdef HAVE_INTERP_INTERN
115ff745 588PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 589 /* platform internals */
4b556e6c
JD
590#endif
591
7fae4e64 592/* more statics moved here */
115ff745 593PERLVAR(I, DBcv, CV *) /* from perl.c */
75010704
DM
594PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
595 compile-time common elem detection */
56953603 596
19bc2726
DM
597PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
598
115ff745
NC
599PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
600PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
601PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
602PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 603
19bc2726 604
985213f2
AB
605PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
606PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
607PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
608PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 609PERLVARI(I, an, U32, 0) /* malloc sequence number */
be2b6a89 610
79968a97
NC
611/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
612PERLVARI(I, breakable_sub_gen, U32, 0)
613
be2b6a89
DM
614#ifdef DEBUGGING
615 /* exercise wrap-around */
616 #define PERL_COP_SEQMAX (U32_MAX-50)
617#else
618 #define PERL_COP_SEQMAX 0
619#endif
115ff745 620PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
be2b6a89
DM
621#undef PERL_COP_SEQMAX
622
115ff745
NC
623PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
624PERLVAR(I, origalen, U32)
625PERLVAR(I, origenviron, char **)
ca0c25f6 626#ifdef PERL_USES_PL_PIDSTATUS
115ff745 627PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 628#endif
115ff745 629PERLVAR(I, osname, char *) /* operating system */
5c728af0 630
dc37125b
DM
631PERLVAR(I, sighandlerp, Sighandler_t)
632/* these two are provided only to solve library linkage issues; they
633 * should not be hooked by user code */
634PERLVAR(I, sighandler1p, Sighandler1_t)
635PERLVAR(I, sighandler3p, Sighandler3_t)
0672f40e 636
115ff745 637PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 638
8162b70e 639PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
79968a97 640
e897f2d7 641PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
9f7da6d5 642
115ff745 643PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 644
115ff745 645PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 646
115ff745 647PERLVAR(I, subline, I32) /* line this subroutine began on */
d12be05d 648PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
d95e864f 649
d12be05d
DM
650PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
651PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
8ce2f624 652 in current "register" pad */
d12be05d 653PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
d95e864f 654
d12be05d 655PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
0672f40e 656
e9bc6d6b
KW
657#if defined(USE_POSIX_2008_LOCALE) \
658 && defined(USE_THREAD_SAFE_LOCALE) \
659 && ! defined(HAS_QUERYLOCALE)
660
661PERLVARA(I, curlocales, 12, char *)
662
663#endif
0672f40e 664#ifdef USE_LOCALE_COLLATE
e9bc6d6b 665
115ff745
NC
666PERLVAR(I, collation_name, char *) /* Name of current collation */
667PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
668PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
669PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
f28f4d2a 670PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
c664130f
KW
671PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
672 /* Assume until proven otherwise that it works */
a4a439fb 673PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
115ff745 674PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 675 /* Assume simple collation */
0672f40e
GS
676#endif /* USE_LOCALE_COLLATE */
677
f7416781
KW
678PERLVARI(I, langinfo_buf, char *, NULL)
679PERLVARI(I, langinfo_bufsize, Size_t, 0)
9aac5db8
KW
680PERLVARI(I, setlocale_buf, char *, NULL)
681PERLVARI(I, setlocale_bufsize, Size_t, 0)
f7416781 682
19bc2726
DM
683#ifdef PERL_SAWAMPERSAND
684PERLVAR(I, sawampersand, U8) /* must save all match strings */
9f7da6d5 685#endif
95ca8690 686
79968a97
NC
687/* current phase the interpreter is in
688 for ordering this structure to remove holes, we're assuming that this is 4
689 bytes. */
690PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
691
692PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
693
63251dfc
RL
694PERLVAR(I, unsafe, bool)
695PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
696
daf9aebe
TC
697/*
698=for apidoc Amn|signed char|PL_perl_destruct_level
699
700This value may be set when embedding for full cleanup.
701
702Possible values:
703
704=over
705
706=item * 0 - none
707
708=item * 1 - full
709
710=item * 2 or greater - full with checks.
711
712=back
713
714If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
715value of C<PL_perl_destruct_level> its value is used instead.
716
717=cut
718*/
79968a97
NC
719/* mod_perl is special, and also assigns a meaning -1 */
720PERLVARI(I, perl_destruct_level, signed char, 0)
9f7da6d5 721
63251dfc
RL
722PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
723
724PERLVAR(I, srand_called, bool)
725
0672f40e
GS
726#ifdef USE_LOCALE_NUMERIC
727
892e6465
KW
728PERLVARI(I, numeric_underlying, bool, TRUE)
729 /* Assume underlying locale numerics */
4c68b815 730PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
63251dfc
RL
731
732PERLVARI(I, numeric_standard, int, TRUE)
733 /* Assume C locale numerics */
115ff745
NC
734PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
735PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 736
7e5377f7 737# ifdef HAS_POSIX_2008_LOCALE
e1aa2579
KW
738
739PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
740
741# endif
0672f40e
GS
742#endif /* !USE_LOCALE_NUMERIC */
743
c4a30c8c
NC
744/* Array of signal handlers, indexed by signal number, through which the C
745 signal handler dispatches. */
115ff745 746PERLVAR(I, psig_ptr, SV **)
c4a30c8c 747/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
748 argument to a signal handler. Only one block of memory is allocated for
749 both psig_name and psig_ptr. */
115ff745 750PERLVAR(I, psig_name, SV **)
1d7c1841 751
c5be433b 752#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
753PERLVAR(I, Mem, struct IPerlMem *)
754PERLVAR(I, MemShared, struct IPerlMem *)
755PERLVAR(I, MemParse, struct IPerlMem *)
756PERLVAR(I, Env, struct IPerlEnv *)
757PERLVAR(I, StdIO, struct IPerlStdIO *)
758PERLVAR(I, LIO, struct IPerlLIO *)
759PERLVAR(I, Dir, struct IPerlDir *)
760PERLVAR(I, Sock, struct IPerlSock *)
761PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 762#endif
1d7c1841 763
115ff745
NC
764PERLVAR(I, ptr_table, PTR_TBL_t *)
765PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 766
115ff745 767PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 768
d95e864f 769
1fcf4c12 770#if defined(USE_ITHREADS)
115ff745 771PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 772 regex_padav */
115ff745 773PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 774 values in op_pmoffset of pmop.
402d2eb1
NC
775 Entry 0 is an SV whose PV is a
776 "packed" list of IVs listing
e6853197 777 the now-free slots in the array */
d4d03940
FC
778PERLVAR(I, stashpad, HV **) /* for CopSTASH */
779PERLVARI(I, stashpadmax, PADOFFSET, 64)
780PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
781#endif
782
ea68fd67 783#ifdef USE_REENTRANT_API
115ff745 784PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
785#endif
786
115ff745
NC
787PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
788PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 789
a1ea730d 790#ifdef PERLIO_LAYERS
115ff745
NC
791PERLVARI(I, perlio, PerlIOl *, NULL)
792PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
793PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
794#endif
795
115ff745
NC
796PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
797PERLVARI(I, unitcheckav_save, AV *, NULL)
798 /* save UNITCHECK{}s when compiling */
ece599bd 799
115ff745 800PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 801
15a5279a 802/* Hooks to shared SVs and locks. */
115ff745
NC
803PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
804PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
238965b4
KW
805
806GCC_DIAG_IGNORE(-Wdeprecated-declarations)
d0647d4e
NC
807#ifdef NO_MATHOMS
808# define PERL_UNLOCK_HOOK Perl_sv_nosharing
809#else
810/* This reference ensures that the mathoms are linked with perl */
811# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
812#endif
115ff745 813PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 814
238965b4
KW
815GCC_DIAG_RESTORE
816
115ff745 817PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 818
9e08d3a4 819/* Can shared object be destroyed */
115ff745 820PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 821
01d65469 822#ifndef PERL_MICRO
115ff745 823PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 824#endif
92f022bb 825
115ff745 826PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 827
9e08d3a4
NC
828/* Register of known Method Resolution Orders.
829 What this actually points to is an implementation detail (it may change to
830 a structure incorporating a reference count - use mro_get_from_name to
831 retrieve a C<struct mro_alg *> */
115ff745 832PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
833
834/* Compile-time block start/end hooks */
115ff745 835PERLVAR(I, blockhooks, AV *)
9e08d3a4 836
115ff745 837PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 838
19bc2726
DM
839PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
840
841/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
842 present always, as -DDEBUGGING must be binary compatible with non. */
843PERLVARI(I, scopestack_name, const char * *, NULL)
844
845PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
846
d67594ff
FC
847/* Hook for File::Glob */
848PERLVARI(I, globhook, globhook_t, NULL)
849
0f60372e 850#if defined(MULTIPLICITY)
436227c7 851/* The last unconditional member of the interpreter structure when 5.18.0 was
ffee3ff6
NC
852 released. The offset of the end of this is baked into a global variable in
853 any shared perl library which will allow a sanity test in future perl
854 releases. */
0f60372e
KW
855# define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
856#endif
ffee3ff6 857
f16dd614 858#ifdef PERL_IMPLICIT_CONTEXT
115ff745 859PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 860PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
f16dd614
DM
861#endif
862
0419d978 863#if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
5ca5a628 864/* For use with the memory debugging code in util.c. This is used only in
0419d978
AC
865 * DEBUGGING builds (as long as the relevant structure is defined), but
866 * defining it in non-debug builds too means that we retain binary
867 * compatibility between otherwise-compatible plain and debug builds. */
115ff745 868PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
0419d978 869#endif
7cb608b5 870
ba6d381e
NC
871#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
872/* File descriptor to talk to the child which dumps scalars. */
115ff745 873PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
874#endif
875
ba6d381e 876
d7a2c63c 877#ifdef DEBUG_LEAKING_SCALARS
115ff745 878PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
879#endif
880
a38ab475
RZ
881PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
882
75d476e2
SM
883#ifdef PERL_TRACE_OPS
884PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
885 If PERL_TRACE_OPS is enabled, we'll dump
886 a summary count of all ops executed in the
887 program at perl_destruct time. For
888 profiling/debugging only. Works only if
889 DEBUGGING is enabled, too. */
890#endif
891
3be8f094
TC
892PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
893
eecd4d11 894PERLVARI(I, dump_re_max_len, STRLEN, 60)
2bfbbbaf 895
f26b33bd
TC
896/* For internal uses of randomness, this ensures the sequence of
897 * random numbers returned by rand() isn't modified by perl's internal
898 * use of randomness.
899 * This is important if the user has called srand() with a seed.
900 */
901
902PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
903
8c90d3a9
KW
904PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
905
a8def808
KW
906PERLVAR(I, AboveLatin1, SV *)
907PERLVAR(I, Assigned_invlist, SV *)
908PERLVAR(I, GCB_invlist, SV *)
909PERLVAR(I, HasMultiCharFold, SV *)
910PERLVAR(I, InMultiCharFold, SV *)
911PERLVAR(I, Latin1, SV *)
912PERLVAR(I, LB_invlist, SV *)
913PERLVAR(I, SB_invlist, SV *)
914PERLVAR(I, SCX_invlist, SV *)
915PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
916
917/* List of characters that participate in any fold defined by Unicode */
918PERLVAR(I, in_some_fold, SV *)
919
668d1998
KW
920/* Everything that folds to a given character, for case insensitivity regex
921 * matching */
922PERLVAR(I, utf8_foldclosures, SV *)
923
a8def808
KW
924PERLVAR(I, utf8_idcont, SV *)
925PERLVAR(I, utf8_idstart, SV *)
926PERLVAR(I, utf8_perl_idcont, SV *)
927PERLVAR(I, utf8_perl_idstart, SV *)
928PERLVAR(I, utf8_xidcont, SV *)
929PERLVAR(I, utf8_xidstart, SV *)
930PERLVAR(I, WB_invlist, SV *)
931PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
932PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
933PERLVAR(I, utf8_toupper, SV *)
934PERLVAR(I, utf8_totitle, SV *)
935PERLVAR(I, utf8_tolower, SV *)
936PERLVAR(I, utf8_tofold, SV *)
937PERLVAR(I, utf8_tosimplefold, SV *)
938PERLVAR(I, utf8_charname_begin, SV *)
939PERLVAR(I, utf8_charname_continue, SV *)
940PERLVAR(I, utf8_mark, SV *)
941PERLVARI(I, InBitmap, SV *, NULL)
942PERLVAR(I, CCC_non0_non230, SV *)
943PERLVAR(I, Private_Use, SV *)
944
d2c9cb53
KW
945#ifdef HAS_MBRLEN
946PERLVAR(I, mbrlen_ps, mbstate_t)
947#endif
5a6637f0
KW
948#ifdef HAS_MBRTOWC
949PERLVAR(I, mbrtowc_ps, mbstate_t)
950#endif
951#ifdef HAS_WCRTOMB
952PERLVAR(I, wcrtomb_ps, mbstate_t)
953#endif
d2c9cb53 954
157b3822
NC
955/* If you are adding a U8 or U16, check to see if there are 'Space' comments
956 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
957
958/* Within a stable branch, new variables must be added to the very end, before
959 * this comment, for binary compatibility (the offsets of the old members must
960 * not change).
b83cd129 961 * (Don't forget to add your variable also to perl_clone()!)
b83cd129 962 */