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[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
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13/*
14=head1 Per-Interpreter Variables
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
ba05a734 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
115ff745
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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)
54PERLVAR(I, tmps_max, SSize_t)
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55
56PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
907b3e23 57
115ff745 58PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
907b3e23 59 remembering */
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60PERLVAR(I, markstack_ptr, I32 *)
61PERLVAR(I, markstack_max, I32 *)
907b3e23 62
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63PERLVARI(I, sawalias, bool, FALSE) /* must enable common-vars
64 pessimisation */
65
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66#ifdef PERL_HASH_RANDOMIZE_KEYS
67#ifdef USE_PERL_PERTURB_KEYS
68PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
69#endif
0e0ab621 70PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
6a5b4183 71#endif
19bc2726 72PERLVAR(I, strtab, HV *) /* shared string table */
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73/* prog counter for the currently executing OP_MULTIDEREF Used to signal
74 * to S_find_uninit_var() where we are */
75PERLVAR(I, multideref_pc, UNOP_AUX_item *)
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76
77/* Fields used by magic variables such as $@, $/ and so on */
78PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
79
80PERLVAR(I, tainting, bool) /* doing taint checks */
81PERLVAR(I, tainted, bool) /* using variables controlled by $< */
82PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
83PERLVAR(I, localizing, U8) /* are we processing a local() list? */
84PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
3f44dc81 85PERLVAR(I, defgv, GV *) /* the *_ glob */
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86/*
87
88=for apidoc mn|bool|PL_dowarn
89
90The C variable which corresponds to Perl's $^W warning variable.
91
92=cut
93*/
94
95PERLVAR(I, dowarn, U8)
96
97#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
98# define PERL___I -1
99#else
100# define PERL___I 1
101#endif
102PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
103#undef PERL___I
104
105
106/* Stashes */
107PERLVAR(I, defstash, HV *) /* main symbol table */
108PERLVAR(I, curstash, HV *) /* symbol table for current package */
109
110PERLVAR(I, curcop, COP *)
111PERLVAR(I, curstack, AV *) /* THE STACK */
112PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
113PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
114 happening */
115
116/* memory management */
117PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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118
119PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
120PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
121
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122/* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
123PERLVARI(I, reg_curpm, PMOP*, NULL)
124
19bc2726 125/* the currently active slab in a chain of slabs of regmatch states,
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126 * and the currently active state within that slab. This stack of states
127 * is shared amongst re-entrant calls to the regex engine */
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128
129PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
130PERLVAR(I, regmatch_state, regmatch_state *)
131
132PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
133
134/*
135=for apidoc Amn|SV|PL_sv_undef
136This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
137
138=for apidoc Amn|SV|PL_sv_no
139This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
140C<&PL_sv_no>.
141
142=for apidoc Amn|SV|PL_sv_yes
143This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
144C<&PL_sv_yes>.
145
146=cut
147*/
148
149PERLVAR(I, sv_undef, SV)
150PERLVAR(I, sv_no, SV)
151PERLVAR(I, sv_yes, SV)
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152PERLVAR(I, padname_undef, PADNAME)
153PERLVAR(I, padname_const, PADNAME)
115ff745 154PERLVAR(I, Sv, SV *) /* used to hold temporary values */
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155
156PERLVAR(I, parser, yy_parser *) /* current parser state */
157
158PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
159
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160
161/*
162=for apidoc Amn|STRLEN|PL_na
163
164A convenience variable which is typically used with C<SvPV> when one
165doesn't care about the length of the string. It is usually more efficient
166to either declare a local variable and use that instead or to use the
167C<SvPV_nolen> macro.
168
169=cut
170*/
171
115ff745 172PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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173 Not Applicable */
174
175/* stat stuff */
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176PERLVAR(I, statbuf, Stat_t)
177PERLVAR(I, statcache, Stat_t) /* _ */
178PERLVAR(I, statgv, GV *)
179PERLVARI(I, statname, SV *, NULL)
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180
181#ifdef HAS_TIMES
0516fbdf 182/* Will be removed soon after v5.21.10. See RT #121351 */
115ff745 183PERLVAR(I, timesbuf, struct tms)
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184#endif
185
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186/*
187=for apidoc mn|SV*|PL_rs
188
189The input record separator - C<$/> in Perl space.
190
191=for apidoc mn|GV*|PL_last_in_gv
192
154e47c8 193The GV which was last used for a filehandle input operation. (C<< <FH> >>)
907b3e23 194
e23d9e2f 195=for apidoc mn|GV*|PL_ofsgv
907b3e23 196
e23d9e2f 197The glob containing the output field separator - C<*,> in Perl space.
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198
199=cut
200*/
201
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202PERLVAR(I, rs, SV *) /* input record separator $/ */
203PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
204PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
205PERLVAR(I, defoutgv, GV *) /* default FH for output */
206PERLVARI(I, chopset, const char *, " \n-") /* $: */
207PERLVAR(I, formtarget, SV *)
208PERLVAR(I, bodytarget, SV *)
209PERLVAR(I, toptarget, SV *)
907b3e23 210
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211
212PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
213PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
907b3e23 214
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215PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
216PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
217PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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218
219/* statics "owned" by various functions */
115ff745 220PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 221
115ff745 222PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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223
224/* sort stuff */
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225PERLVAR(I, sortcop, OP *) /* user defined sort routine */
226PERLVAR(I, sortstash, HV *) /* which is in some package or other */
227PERLVAR(I, firstgv, GV *) /* $a */
228PERLVAR(I, secondgv, GV *) /* $b */
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229
230/* float buffer */
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231PERLVAR(I, efloatbuf, char *)
232PERLVAR(I, efloatsize, STRLEN)
907b3e23 233
115ff745 234PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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235 indentation level */
236
e914d9bb 237PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 238
115ff745 239PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
31f05a37 240PERLVAR(I, in_utf8_CTYPE_locale, bool)
780fcc9f 241PERLVAR(I, warn_locale, SV *)
907b3e23 242
87c1d905 243PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
907b3e23 244
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245/*
246=for apidoc Amn|peep_t|PL_peepp
247
248Pointer to the per-subroutine peephole optimiser. This is a function
249that gets called at the end of compilation of a Perl subroutine (or
250equivalently independent piece of Perl code) to perform fixups of
251some ops and to perform small-scale optimisations. The function is
252called once for each subroutine that is compiled, and is passed, as sole
253parameter, a pointer to the op that is the entry point to the subroutine.
254It modifies the op tree in place.
255
256The peephole optimiser should never be completely replaced. Rather,
257add code to it by wrapping the existing optimiser. The basic way to do
258this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
259If the new code wishes to operate on ops throughout the subroutine's
260structure, rather than just at the top level, it is likely to be more
261convenient to wrap the L</PL_rpeepp> hook.
262
263=cut
264*/
265
115ff745 266PERLVARI(I, peepp, peep_t, Perl_peep)
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267
268/*
269=for apidoc Amn|peep_t|PL_rpeepp
270
271Pointer to the recursive peephole optimiser. This is a function
272that gets called at the end of compilation of a Perl subroutine (or
273equivalently independent piece of Perl code) to perform fixups of some
274ops and to perform small-scale optimisations. The function is called
275once for each chain of ops linked through their C<op_next> fields;
276it is recursively called to handle each side chain. It is passed, as
277sole parameter, a pointer to the op that is at the head of the chain.
278It modifies the op tree in place.
279
280The peephole optimiser should never be completely replaced. Rather,
281add code to it by wrapping the existing optimiser. The basic way to do
282this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
283If the new code wishes to operate only on ops at a subroutine's top level,
284rather than throughout the structure, it is likely to be more convenient
285to wrap the L</PL_peepp> hook.
286
287=cut
288*/
289
115ff745 290PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 291
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292/*
293=for apidoc Amn|Perl_ophook_t|PL_opfreehook
294
295When 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.
296This allows extensions to free any extra attribute they have locally attached to an OP.
297It is also assured to first fire for the parent OP and then for its kids.
298
299When 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.
300
301=cut
302*/
303
115ff745 304PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 305
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306PERLVARI(I, watchaddr, char **, 0)
307PERLVAR(I, watchok, char *)
907b3e23 308
115ff745 309PERLVAR(I, perldb, U32)
d95e864f 310
115ff745 311PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 312
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313PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
314
49f531da 315/* pseudo environmental stuff */
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316PERLVAR(I, origargc, int)
317PERLVAR(I, origargv, char **)
318PERLVAR(I, envgv, GV *)
319PERLVAR(I, incgv, GV *)
320PERLVAR(I, hintgv, GV *)
321PERLVAR(I, origfilename, char *)
9a189793 322PERLVARI(I, xsubfilename, const char *, NULL)
115ff745
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323PERLVAR(I, diehook, SV *)
324PERLVAR(I, warnhook, SV *)
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325
326/* switches */
115ff745 327PERLVAR(I, patchlevel, SV *)
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328PERLVAR(I, localpatches, const char * const *)
329PERLVARI(I, splitstr, const char *, " ")
330
331PERLVAR(I, minus_c, bool)
332PERLVAR(I, minus_n, bool)
333PERLVAR(I, minus_p, bool)
334PERLVAR(I, minus_l, bool)
335PERLVAR(I, minus_a, bool)
336PERLVAR(I, minus_F, bool)
337PERLVAR(I, doswitches, bool)
338PERLVAR(I, minus_E, bool)
954c1994 339
115ff745
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340PERLVAR(I, inplace, char *)
341PERLVAR(I, e_script, SV *)
49f531da 342
115ff745 343PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 344
115ff745 345PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 346 /* top fd to pass to subprocesses */
115ff745 347PERLVAR(I, statusvalue, I32) /* $? */
49f531da 348#ifdef VMS
115ff745 349PERLVAR(I, statusvalue_vms, U32)
e5218da5 350#else
115ff745 351PERLVAR(I, statusvalue_posix, I32)
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352#endif
353
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354PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
355PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 356
49f531da 357/* shortcuts to various I/O objects */
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358PERLVAR(I, stdingv, GV *) /* *STDIN */
359PERLVAR(I, stderrgv, GV *) /* *STDERR */
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360PERLVAR(I, argvgv, GV *) /* *ARGV */
361PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
362PERLVAR(I, argvout_stack, AV *)
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363
364/* shortcuts to regexp stuff */
115ff745 365PERLVAR(I, replgv, GV *) /* *^R */
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366
367/* shortcuts to misc objects */
115ff745 368PERLVAR(I, errgv, GV *) /* *@ */
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369
370/* shortcuts to debugging objects */
115ff745
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371PERLVAR(I, DBgv, GV *) /* *DB::DB */
372PERLVAR(I, DBline, GV *) /* *DB::line */
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373
374/*
2eb25c99 375=for apidoc mn|GV *|PL_DBsub
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376When Perl is run in debugging mode, with the B<-d> switch, this GV contains
377the SV which holds the name of the sub being debugged. This is the C
378variable which corresponds to Perl's $DB::sub variable. See
379C<PL_DBsingle>.
380
2eb25c99 381=for apidoc mn|SV *|PL_DBsingle
954c1994 382When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 383boolean which indicates whether subs are being single-stepped.
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384Single-stepping is automatically turned on after every step. This is the C
385variable which corresponds to Perl's $DB::single variable. See
386C<PL_DBsub>.
387
2eb25c99 388=for apidoc mn|SV *|PL_DBtrace
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389Trace variable used when Perl is run in debugging mode, with the B<-d>
390switch. This is the C variable which corresponds to Perl's $DB::trace
391variable. See C<PL_DBsingle>.
392
393=cut
394*/
395
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396PERLVAR(I, DBsub, GV *) /* *DB::sub */
397PERLVAR(I, DBsingle, SV *) /* $DB::single */
398PERLVAR(I, DBtrace, SV *) /* $DB::trace */
399PERLVAR(I, DBsignal, SV *) /* $DB::signal */
400PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
49f531da 401
a6d69523
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402PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
403
49f531da 404/* symbol tables */
115ff745
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405PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
406PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
407PERLVAR(I, curstname, SV *) /* name of current package */
408PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
409PERLVAR(I, endav, AV *) /* names of END subroutines */
410PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
411PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
412PERLVAR(I, initav, AV *) /* names of INIT subroutines */
49f531da 413
49f531da 414/* subprocess state */
115ff745 415PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
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416
417/* internal state */
115ff745 418PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 419
49f531da 420/* current interpreter roots */
115ff745
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421PERLVAR(I, main_cv, CV *)
422PERLVAR(I, main_root, OP *)
423PERLVAR(I, main_start, OP *)
424PERLVAR(I, eval_root, OP *)
425PERLVAR(I, eval_start, OP *)
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426
427/* runtime control stuff */
115ff745 428PERLVARI(I, curcopdb, COP *, NULL)
49f531da 429
115ff745
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430PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
431PERLVAR(I, lastfd, int) /* what to preserve mode on */
432PERLVAR(I, oldname, char *) /* what to preserve mode on */
433PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
434PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
00accf8d
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435/* Elements in this array have ';' appended and are injected as a single line
436 into the tokeniser. You can't put any (literal) newlines into any program
437 you stuff in into this array, as the point where it's injected is expecting
438 a single physical line. */
115ff745
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439PERLVAR(I, preambleav, AV *)
440PERLVAR(I, mess_sv, SV *)
441PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
19bc2726 442
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443/* funky return mechanisms */
444PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
445
71eebe1e 446/* statics moved here for shared library purposes */
115ff745
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447PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
448PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
449PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
450PERLVARI(I, laststype, U16, OP_STAT)
19bc2726 451
115ff745 452PERLVARI(I, laststatval, int, -1)
d4cce5f1 453
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454PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
455 assignment? */
456
4b556e6c 457/* interpreter atexit processing */
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458PERLVARI(I, exitlistlen, I32, 0) /* length of same */
459PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 460 /* list of exit functions */
954c1994
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461
462/*
463=for apidoc Amn|HV*|PL_modglobal
464
7889fe52 465C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 466extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
467In a pinch, it can also be used as a symbol table for extensions
468to share data among each other. It is a good idea to use keys
954c1994
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469prefixed by the package name of the extension that owns the data.
470
471=cut
472*/
473
115ff745 474PERLVAR(I, modglobal, HV *) /* per-interp module data */
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475
476/* these used to be in global before 5.004_68 */
115ff745 477PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 478
115ff745 479PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 480
115ff745 481PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb 482PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
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483PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
484PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
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485
486#ifdef HAVE_INTERP_INTERN
115ff745 487PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 488 /* platform internals */
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489#endif
490
7fae4e64 491/* more statics moved here */
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492PERLVAR(I, DBcv, CV *) /* from perl.c */
493PERLVARI(I, generation, int, 100) /* from op.c */
56953603 494
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495PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
496
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497PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
498PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
499PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
500PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 501
19bc2726 502
985213f2
AB
503PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
504PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
505PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
506PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 507PERLVARI(I, an, U32, 0) /* malloc sequence number */
be2b6a89 508
79968a97
NC
509/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
510PERLVARI(I, breakable_sub_gen, U32, 0)
511
be2b6a89
DM
512#ifdef DEBUGGING
513 /* exercise wrap-around */
514 #define PERL_COP_SEQMAX (U32_MAX-50)
515#else
516 #define PERL_COP_SEQMAX 0
517#endif
115ff745 518PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
be2b6a89
DM
519#undef PERL_COP_SEQMAX
520
115ff745
NC
521PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
522PERLVAR(I, origalen, U32)
523PERLVAR(I, origenviron, char **)
ca0c25f6 524#ifdef PERL_USES_PL_PIDSTATUS
115ff745 525PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 526#endif
115ff745 527PERLVAR(I, osname, char *) /* operating system */
5c728af0 528
115ff745 529PERLVAR(I, sighandlerp, Sighandler_t)
0672f40e 530
115ff745 531PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 532
79968a97
NC
533PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
534
115ff745 535PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
9f7da6d5 536
115ff745 537PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 538
115ff745 539PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 540
115ff745
NC
541PERLVAR(I, subline, I32) /* line this subroutine began on */
542PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
d95e864f 543
115ff745 544PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
8ce2f624
FC
545PERLVAR(I, padix, I32) /* lowest unused index - 1
546 in current "register" pad */
b54c5e14 547PERLVAR(I, constpadix, I32) /* lowest unused for constants */
d95e864f 548
115ff745 549PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
0672f40e 550
0672f40e 551#ifdef USE_LOCALE_COLLATE
115ff745
NC
552PERLVAR(I, collation_name, char *) /* Name of current collation */
553PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
554PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
555PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
556PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 557 /* Assume simple collation */
0672f40e
GS
558#endif /* USE_LOCALE_COLLATE */
559
19bc2726
DM
560#ifdef PERL_SAWAMPERSAND
561PERLVAR(I, sawampersand, U8) /* must save all match strings */
9f7da6d5 562#endif
95ca8690 563
19bc2726 564PERLVAR(I, unsafe, bool)
87c1d905 565PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
19bc2726 566
79968a97
NC
567/* current phase the interpreter is in
568 for ordering this structure to remove holes, we're assuming that this is 4
569 bytes. */
570PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
571
572PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
573
574/* This value may be set when embedding for full cleanup */
575/* 0=none, 1=full, 2=full with checks */
576/* mod_perl is special, and also assigns a meaning -1 */
577PERLVARI(I, perl_destruct_level, signed char, 0)
9f7da6d5 578
0672f40e
GS
579#ifdef USE_LOCALE_NUMERIC
580
7738054c 581PERLVARI(I, numeric_standard, int, TRUE)
0672f40e 582 /* Assume simple numerics */
115ff745 583PERLVARI(I, numeric_local, bool, TRUE)
0672f40e 584 /* Assume local numerics */
115ff745
NC
585PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
586PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 587
0672f40e
GS
588#endif /* !USE_LOCALE_NUMERIC */
589
a3e1f3a6 590/* Unicode inversion lists */
a3e1f3a6 591PERLVAR(I, Latin1, SV *)
892d8259 592PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
a3e1f3a6 593PERLVAR(I, AboveLatin1, SV *)
e0a1ff7a 594PERLVAR(I, InBitmap, SV *)
a3e1f3a6 595
26faadbd 596PERLVAR(I, NonL1NonFinalFold, SV *)
9d53c457 597PERLVAR(I, HasMultiCharFold, SV *)
26faadbd 598
a3e1f3a6 599/* utf8 character class swashes */
115ff745 600PERLVAR(I, utf8_mark, SV *)
115ff745
NC
601PERLVAR(I, utf8_toupper, SV *)
602PERLVAR(I, utf8_totitle, SV *)
603PERLVAR(I, utf8_tolower, SV *)
604PERLVAR(I, utf8_tofold, SV *)
bde9e88d
KW
605PERLVAR(I, utf8_charname_begin, SV *)
606PERLVAR(I, utf8_charname_continue, SV *)
30f9bdb0 607
63c61c3f 608PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
30f9bdb0 609PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
cac6e0ca 610PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
64935bc6 611PERLVAR(I, GCB_invlist, SV *)
06ae2722 612PERLVAR(I, SB_invlist, SV *)
ae3bb8ea 613PERLVAR(I, WB_invlist, SV *)
cac6e0ca 614
115ff745
NC
615PERLVAR(I, last_swash_hv, HV *)
616PERLVAR(I, last_swash_tmps, U8 *)
617PERLVAR(I, last_swash_slen, STRLEN)
6c2f1a55 618PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
45d91b83 619PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
d95e864f
NC
620
621#ifdef FCRYPT
115ff745 622PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
79968a97
NC
623#else
624/* One byte hole in the interpreter structure. */
d95e864f
NC
625#endif
626
115ff745 627PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
e6b4660c 628PERLVAR(I, srand_called, bool)
12fbd33b 629
c4a30c8c
NC
630/* Array of signal handlers, indexed by signal number, through which the C
631 signal handler dispatches. */
115ff745 632PERLVAR(I, psig_ptr, SV **)
c4a30c8c 633/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
634 argument to a signal handler. Only one block of memory is allocated for
635 both psig_name and psig_ptr. */
115ff745 636PERLVAR(I, psig_name, SV **)
1d7c1841 637
c5be433b 638#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
639PERLVAR(I, Mem, struct IPerlMem *)
640PERLVAR(I, MemShared, struct IPerlMem *)
641PERLVAR(I, MemParse, struct IPerlMem *)
642PERLVAR(I, Env, struct IPerlEnv *)
643PERLVAR(I, StdIO, struct IPerlStdIO *)
644PERLVAR(I, LIO, struct IPerlLIO *)
645PERLVAR(I, Dir, struct IPerlDir *)
646PERLVAR(I, Sock, struct IPerlSock *)
647PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 648#endif
1d7c1841 649
115ff745
NC
650PERLVAR(I, ptr_table, PTR_TBL_t *)
651PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 652
115ff745 653PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 654
d95e864f 655
1fcf4c12 656#if defined(USE_ITHREADS)
115ff745 657PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 658 regex_padav */
115ff745 659PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 660 values in op_pmoffset of pmop.
402d2eb1
NC
661 Entry 0 is an SV whose PV is a
662 "packed" list of IVs listing
e6853197 663 the now-free slots in the array */
d4d03940
FC
664PERLVAR(I, stashpad, HV **) /* for CopSTASH */
665PERLVARI(I, stashpadmax, PADOFFSET, 64)
666PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
667#endif
668
ea68fd67 669#ifdef USE_REENTRANT_API
115ff745 670PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
671#endif
672
115ff745
NC
673PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
674PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 675
a1ea730d 676#ifdef PERLIO_LAYERS
115ff745
NC
677PERLVARI(I, perlio, PerlIOl *, NULL)
678PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
679PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
680#endif
681
3e669301
KW
682PERLVARI(I, encoding, SV *, NULL) /* $^ENCODING */
683PERLVARI(I, lex_encoding, SV *, NULL) /* encoding pragma */
0a378802 684
115ff745
NC
685PERLVAR(I, utf8_idstart, SV *)
686PERLVAR(I, utf8_idcont, SV *)
687PERLVAR(I, utf8_xidstart, SV *)
b6912c02 688PERLVAR(I, utf8_perl_idstart, SV *)
eba68aa0 689PERLVAR(I, utf8_perl_idcont, SV *)
115ff745 690PERLVAR(I, utf8_xidcont, SV *)
82686b01 691
115ff745 692PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
147f47de 693
115ff745
NC
694PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
695PERLVARI(I, unitcheckav_save, AV *, NULL)
696 /* save UNITCHECK{}s when compiling */
ece599bd 697
115ff745 698PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 699
15a5279a 700/* Hooks to shared SVs and locks. */
115ff745
NC
701PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
702PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
d0647d4e
NC
703#ifdef NO_MATHOMS
704# define PERL_UNLOCK_HOOK Perl_sv_nosharing
705#else
706/* This reference ensures that the mathoms are linked with perl */
707# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
708#endif
115ff745 709PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 710
115ff745 711PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 712
9e08d3a4 713/* Can shared object be destroyed */
115ff745 714PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 715
01d65469 716#ifndef PERL_MICRO
115ff745 717PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 718#endif
92f022bb 719
115ff745 720PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 721
9e08d3a4
NC
722/* Register of known Method Resolution Orders.
723 What this actually points to is an implementation detail (it may change to
724 a structure incorporating a reference count - use mro_get_from_name to
725 retrieve a C<struct mro_alg *> */
115ff745 726PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
727
728/* Compile-time block start/end hooks */
115ff745 729PERLVAR(I, blockhooks, AV *)
9e08d3a4
NC
730
731/* Everything that folds to a given character, for case insensitivity regex
732 * matching */
115ff745 733PERLVARI(I, utf8_foldclosures, HV *, NULL)
9e08d3a4
NC
734
735/* List of characters that participate in folds (except marks, etc in
736 * multi-char folds) */
115ff745 737PERLVARI(I, utf8_foldable, SV *, NULL)
9e08d3a4 738
115ff745 739PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 740
19bc2726
DM
741PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
742
743/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
744 present always, as -DDEBUGGING must be binary compatible with non. */
745PERLVARI(I, scopestack_name, const char * *, NULL)
746
747PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
748
d67594ff
FC
749/* Hook for File::Glob */
750PERLVARI(I, globhook, globhook_t, NULL)
751
b4db5868
FC
752PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
753
0516fbdf 754/* The last unconditional member of the interpreter structure when 5.21.10 was
ffee3ff6
NC
755 released. The offset of the end of this is baked into a global variable in
756 any shared perl library which will allow a sanity test in future perl
757 releases. */
d399cf59 758#define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
ffee3ff6 759
f16dd614 760#ifdef PERL_IMPLICIT_CONTEXT
115ff745 761PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 762PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
ba6d381e 763# ifdef PERL_GLOBAL_STRUCT_PRIVATE
115ff745 764PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
ba6d381e 765# endif
f16dd614
DM
766#endif
767
7cb608b5
NC
768#ifdef PERL_TRACK_MEMPOOL
769/* For use with the memory debugging code in util.c */
115ff745 770PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
7cb608b5
NC
771#endif
772
ba6d381e
NC
773#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
774/* File descriptor to talk to the child which dumps scalars. */
115ff745 775PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
776#endif
777
ba6d381e 778
d7a2c63c 779#ifdef DEBUG_LEAKING_SCALARS
115ff745 780PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
781#endif
782
a38ab475
RZ
783PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
784
75d476e2
SM
785#ifdef PERL_TRACE_OPS
786PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
787 If PERL_TRACE_OPS is enabled, we'll dump
788 a summary count of all ops executed in the
789 program at perl_destruct time. For
790 profiling/debugging only. Works only if
791 DEBUGGING is enabled, too. */
792#endif
793
3be8f094
TC
794PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
795
157b3822
NC
796/* If you are adding a U8 or U16, check to see if there are 'Space' comments
797 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
798
799/* Within a stable branch, new variables must be added to the very end, before
800 * this comment, for binary compatibility (the offsets of the old members must
801 * not change).
b83cd129 802 * (Don't forget to add your variable also to perl_clone()!)
e3acbfda 803 * XSUB.h provides wrapper functions via perlapi.h that make this
b83cd129
JH
804 * irrelevant, but not all code may be expected to #include XSUB.h.
805 */