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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
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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 */
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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 */
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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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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 */
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77
78PERLVAR(I, tainting, bool) /* doing taint checks */
d48c660d 79PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
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80
81/* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
89 *
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
93 */
19bc2726 94PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
a68090fe 95
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96PERLVAR(I, localizing, U8) /* are we processing a local() list? */
97PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
3f44dc81 98PERLVAR(I, defgv, GV *) /* the *_ glob */
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99/*
100
b5282d7c 101=for apidoc mn|U8|PL_dowarn
19bc2726 102
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103The C variable that roughly corresponds to Perl's C<$^W> warning variable.
104However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
105collection of flag bits.
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106
107=cut
108*/
109
110PERLVAR(I, dowarn, U8)
111
112#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
113# define PERL___I -1
114#else
115# define PERL___I 1
116#endif
117PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
118#undef PERL___I
119
120
121/* Stashes */
122PERLVAR(I, defstash, HV *) /* main symbol table */
123PERLVAR(I, curstash, HV *) /* symbol table for current package */
124
125PERLVAR(I, curcop, COP *)
126PERLVAR(I, curstack, AV *) /* THE STACK */
127PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
128PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
129 happening */
130
131/* memory management */
132PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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133
134PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
135PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
136
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137/* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
138PERLVARI(I, reg_curpm, PMOP*, NULL)
139
19bc2726 140/* the currently active slab in a chain of slabs of regmatch states,
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141 * and the currently active state within that slab. This stack of states
142 * is shared amongst re-entrant calls to the regex engine */
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143
144PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
145PERLVAR(I, regmatch_state, regmatch_state *)
146
147PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
148
149/*
150=for apidoc Amn|SV|PL_sv_undef
151This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
152
153=for apidoc Amn|SV|PL_sv_no
fbe13c60 154This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
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155C<&PL_sv_no>.
156
157=for apidoc Amn|SV|PL_sv_yes
fbe13c60 158This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
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159C<&PL_sv_yes>.
160
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161=for apidoc Amn|SV|PL_sv_zero
162This readonly SV has a zero numeric value and a C<"0"> string value. It's
163similar to C<L</PL_sv_no>> except for its string value. Can be used as a
164cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
165C<&PL_sv_zero>. Introduced in 5.28.
166
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167=cut
168*/
169
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170#ifdef MULTIPLICITY
171PERLVAR(I, sv_yes, SV)
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172PERLVAR(I, sv_undef, SV)
173PERLVAR(I, sv_no, SV)
5a6c2837 174PERLVAR(I, sv_zero, SV)
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175#else
176/* store the immortals as an array to ensure they are contiguous in
177 * memory: makes SvIMMORTAL_INTERP(sv) possible */
178PERLVARA(I, sv_immortals, 4, SV)
179#endif
5a6c2837 180
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181PERLVAR(I, padname_undef, PADNAME)
182PERLVAR(I, padname_const, PADNAME)
115ff745 183PERLVAR(I, Sv, SV *) /* used to hold temporary values */
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184
185PERLVAR(I, parser, yy_parser *) /* current parser state */
186
187PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
188
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189
190/*
191=for apidoc Amn|STRLEN|PL_na
192
193A convenience variable which is typically used with C<SvPV> when one
194doesn't care about the length of the string. It is usually more efficient
195to either declare a local variable and use that instead or to use the
196C<SvPV_nolen> macro.
197
198=cut
199*/
200
115ff745 201PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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202 Not Applicable */
203
204/* stat stuff */
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205PERLVAR(I, statcache, Stat_t) /* _ */
206PERLVAR(I, statgv, GV *)
207PERLVARI(I, statname, SV *, NULL)
907b3e23 208
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209/*
210=for apidoc mn|SV*|PL_rs
211
212The input record separator - C<$/> in Perl space.
213
214=for apidoc mn|GV*|PL_last_in_gv
215
154e47c8 216The GV which was last used for a filehandle input operation. (C<< <FH> >>)
907b3e23 217
e23d9e2f 218=for apidoc mn|GV*|PL_ofsgv
907b3e23 219
e23d9e2f 220The glob containing the output field separator - C<*,> in Perl space.
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221
222=cut
223*/
224
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225PERLVAR(I, rs, SV *) /* input record separator $/ */
226PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
227PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
228PERLVAR(I, defoutgv, GV *) /* default FH for output */
229PERLVARI(I, chopset, const char *, " \n-") /* $: */
230PERLVAR(I, formtarget, SV *)
231PERLVAR(I, bodytarget, SV *)
232PERLVAR(I, toptarget, SV *)
907b3e23 233
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234
235PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
236PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
907b3e23 237
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238PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
239PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
240PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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241
242/* statics "owned" by various functions */
115ff745 243PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 244
115ff745 245PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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246
247/* sort stuff */
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248PERLVAR(I, sortcop, OP *) /* user defined sort routine */
249PERLVAR(I, sortstash, HV *) /* which is in some package or other */
250PERLVAR(I, firstgv, GV *) /* $a */
251PERLVAR(I, secondgv, GV *) /* $b */
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252
253/* float buffer */
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254PERLVAR(I, efloatbuf, char *)
255PERLVAR(I, efloatsize, STRLEN)
907b3e23 256
115ff745 257PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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258 indentation level */
259
e914d9bb 260PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 261
115ff745 262PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
31f05a37 263PERLVAR(I, in_utf8_CTYPE_locale, bool)
165a1c52 264PERLVAR(I, in_utf8_COLLATE_locale, bool)
49d7d366 265PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
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266PERLVARA(I, locale_utf8ness, 256, char)
267
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268#ifdef USE_LOCALE_CTYPE
269 PERLVAR(I, warn_locale, SV *)
270#endif
907b3e23 271
87c1d905 272PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
907b3e23 273
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274/*
275=for apidoc Amn|peep_t|PL_peepp
276
277Pointer to the per-subroutine peephole optimiser. This is a function
278that gets called at the end of compilation of a Perl subroutine (or
279equivalently independent piece of Perl code) to perform fixups of
280some ops and to perform small-scale optimisations. The function is
281called once for each subroutine that is compiled, and is passed, as sole
282parameter, a pointer to the op that is the entry point to the subroutine.
283It modifies the op tree in place.
284
285The peephole optimiser should never be completely replaced. Rather,
286add code to it by wrapping the existing optimiser. The basic way to do
287this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
288If the new code wishes to operate on ops throughout the subroutine's
289structure, rather than just at the top level, it is likely to be more
290convenient to wrap the L</PL_rpeepp> hook.
291
292=cut
293*/
294
115ff745 295PERLVARI(I, peepp, peep_t, Perl_peep)
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296
297/*
298=for apidoc Amn|peep_t|PL_rpeepp
299
300Pointer to the recursive peephole optimiser. This is a function
301that gets called at the end of compilation of a Perl subroutine (or
302equivalently independent piece of Perl code) to perform fixups of some
303ops and to perform small-scale optimisations. The function is called
304once for each chain of ops linked through their C<op_next> fields;
305it is recursively called to handle each side chain. It is passed, as
306sole parameter, a pointer to the op that is at the head of the chain.
307It modifies the op tree in place.
308
309The peephole optimiser should never be completely replaced. Rather,
310add code to it by wrapping the existing optimiser. The basic way to do
311this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
312If the new code wishes to operate only on ops at a subroutine's top level,
313rather than throughout the structure, it is likely to be more convenient
314to wrap the L</PL_peepp> hook.
315
316=cut
317*/
318
115ff745 319PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 320
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321/*
322=for apidoc Amn|Perl_ophook_t|PL_opfreehook
323
324When 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.
325This allows extensions to free any extra attribute they have locally attached to an OP.
326It is also assured to first fire for the parent OP and then for its kids.
327
328When 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.
329
330=cut
331*/
332
115ff745 333PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 334
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335PERLVARI(I, watchaddr, char **, 0)
336PERLVAR(I, watchok, char *)
907b3e23 337
115ff745 338PERLVAR(I, perldb, U32)
d95e864f 339
115ff745 340PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 341
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342PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
343
49f531da 344/* pseudo environmental stuff */
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345PERLVAR(I, origargc, int)
346PERLVAR(I, origargv, char **)
347PERLVAR(I, envgv, GV *)
348PERLVAR(I, incgv, GV *)
349PERLVAR(I, hintgv, GV *)
350PERLVAR(I, origfilename, char *)
9a189793 351PERLVARI(I, xsubfilename, const char *, NULL)
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352PERLVAR(I, diehook, SV *)
353PERLVAR(I, warnhook, SV *)
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354
355/* switches */
115ff745 356PERLVAR(I, patchlevel, SV *)
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357PERLVAR(I, localpatches, const char * const *)
358PERLVARI(I, splitstr, const char *, " ")
359
360PERLVAR(I, minus_c, bool)
361PERLVAR(I, minus_n, bool)
362PERLVAR(I, minus_p, bool)
363PERLVAR(I, minus_l, bool)
364PERLVAR(I, minus_a, bool)
365PERLVAR(I, minus_F, bool)
366PERLVAR(I, doswitches, bool)
367PERLVAR(I, minus_E, bool)
954c1994 368
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369PERLVAR(I, inplace, char *)
370PERLVAR(I, e_script, SV *)
49f531da 371
115ff745 372PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 373
115ff745 374PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 375 /* top fd to pass to subprocesses */
115ff745 376PERLVAR(I, statusvalue, I32) /* $? */
49f531da 377#ifdef VMS
115ff745 378PERLVAR(I, statusvalue_vms, U32)
e5218da5 379#else
115ff745 380PERLVAR(I, statusvalue_posix, I32)
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381#endif
382
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383PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
384PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 385
49f531da 386/* shortcuts to various I/O objects */
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387PERLVAR(I, stdingv, GV *) /* *STDIN */
388PERLVAR(I, stderrgv, GV *) /* *STDERR */
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389PERLVAR(I, argvgv, GV *) /* *ARGV */
390PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
391PERLVAR(I, argvout_stack, AV *)
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392
393/* shortcuts to regexp stuff */
115ff745 394PERLVAR(I, replgv, GV *) /* *^R */
49f531da
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395
396/* shortcuts to misc objects */
115ff745 397PERLVAR(I, errgv, GV *) /* *@ */
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398
399/* shortcuts to debugging objects */
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400PERLVAR(I, DBgv, GV *) /* *DB::DB */
401PERLVAR(I, DBline, GV *) /* *DB::line */
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402
403/*
2eb25c99 404=for apidoc mn|GV *|PL_DBsub
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405When Perl is run in debugging mode, with the B<-d> switch, this GV contains
406the SV which holds the name of the sub being debugged. This is the C
407variable which corresponds to Perl's $DB::sub variable. See
fbe13c60 408C<L</PL_DBsingle>>.
954c1994 409
2eb25c99 410=for apidoc mn|SV *|PL_DBsingle
954c1994 411When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 412boolean which indicates whether subs are being single-stepped.
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413Single-stepping is automatically turned on after every step. This is the C
414variable which corresponds to Perl's $DB::single variable. See
fbe13c60 415C<L</PL_DBsub>>.
954c1994 416
2eb25c99 417=for apidoc mn|SV *|PL_DBtrace
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418Trace variable used when Perl is run in debugging mode, with the B<-d>
419switch. This is the C variable which corresponds to Perl's $DB::trace
fbe13c60 420variable. See C<L</PL_DBsingle>>.
954c1994
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421
422=cut
423*/
424
115ff745
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425PERLVAR(I, DBsub, GV *) /* *DB::sub */
426PERLVAR(I, DBsingle, SV *) /* $DB::single */
427PERLVAR(I, DBtrace, SV *) /* $DB::trace */
428PERLVAR(I, DBsignal, SV *) /* $DB::signal */
429PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
49f531da 430
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431PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
432
49f531da 433/* symbol tables */
115ff745
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434PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
435PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
436PERLVAR(I, curstname, SV *) /* name of current package */
437PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
438PERLVAR(I, endav, AV *) /* names of END subroutines */
439PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
440PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
441PERLVAR(I, initav, AV *) /* names of INIT subroutines */
49f531da 442
49f531da 443/* subprocess state */
115ff745 444PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
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445
446/* internal state */
115ff745 447PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 448
49f531da 449/* current interpreter roots */
115ff745
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450PERLVAR(I, main_cv, CV *)
451PERLVAR(I, main_root, OP *)
452PERLVAR(I, main_start, OP *)
453PERLVAR(I, eval_root, OP *)
454PERLVAR(I, eval_start, OP *)
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455
456/* runtime control stuff */
115ff745 457PERLVARI(I, curcopdb, COP *, NULL)
49f531da 458
115ff745
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459PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
460PERLVAR(I, lastfd, int) /* what to preserve mode on */
461PERLVAR(I, oldname, char *) /* what to preserve mode on */
00accf8d
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462/* Elements in this array have ';' appended and are injected as a single line
463 into the tokeniser. You can't put any (literal) newlines into any program
464 you stuff in into this array, as the point where it's injected is expecting
465 a single physical line. */
115ff745
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466PERLVAR(I, preambleav, AV *)
467PERLVAR(I, mess_sv, SV *)
468PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
19bc2726 469
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470/* funky return mechanisms */
471PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
472
71eebe1e 473/* statics moved here for shared library purposes */
115ff745
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474PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
475PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
476PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
477PERLVARI(I, laststype, U16, OP_STAT)
19bc2726 478
115ff745 479PERLVARI(I, laststatval, int, -1)
d4cce5f1 480
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481PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
482 assignment? */
483
4b556e6c 484/* interpreter atexit processing */
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485PERLVARI(I, exitlistlen, I32, 0) /* length of same */
486PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 487 /* list of exit functions */
954c1994
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488
489/*
490=for apidoc Amn|HV*|PL_modglobal
491
7889fe52 492C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 493extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
494In a pinch, it can also be used as a symbol table for extensions
495to share data among each other. It is a good idea to use keys
954c1994
GS
496prefixed by the package name of the extension that owns the data.
497
498=cut
499*/
500
115ff745 501PERLVAR(I, modglobal, HV *) /* per-interp module data */
cb68f92d
GS
502
503/* these used to be in global before 5.004_68 */
115ff745 504PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 505
115ff745 506PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 507
115ff745 508PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb 509PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
d12be05d
DM
510PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
511PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
4b556e6c
JD
512
513#ifdef HAVE_INTERP_INTERN
115ff745 514PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 515 /* platform internals */
4b556e6c
JD
516#endif
517
7fae4e64 518/* more statics moved here */
115ff745 519PERLVAR(I, DBcv, CV *) /* from perl.c */
75010704
DM
520PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
521 compile-time common elem detection */
56953603 522
19bc2726
DM
523PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
524
115ff745
NC
525PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
526PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
527PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
528PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 529
19bc2726 530
985213f2
AB
531PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
532PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
533PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
534PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 535PERLVARI(I, an, U32, 0) /* malloc sequence number */
be2b6a89 536
79968a97
NC
537/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
538PERLVARI(I, breakable_sub_gen, U32, 0)
539
be2b6a89
DM
540#ifdef DEBUGGING
541 /* exercise wrap-around */
542 #define PERL_COP_SEQMAX (U32_MAX-50)
543#else
544 #define PERL_COP_SEQMAX 0
545#endif
115ff745 546PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
be2b6a89
DM
547#undef PERL_COP_SEQMAX
548
115ff745
NC
549PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
550PERLVAR(I, origalen, U32)
551PERLVAR(I, origenviron, char **)
ca0c25f6 552#ifdef PERL_USES_PL_PIDSTATUS
115ff745 553PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 554#endif
115ff745 555PERLVAR(I, osname, char *) /* operating system */
5c728af0 556
115ff745 557PERLVAR(I, sighandlerp, Sighandler_t)
0672f40e 558
115ff745 559PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 560
8162b70e 561PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
79968a97 562
e897f2d7 563PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
9f7da6d5 564
115ff745 565PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 566
115ff745 567PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 568
115ff745 569PERLVAR(I, subline, I32) /* line this subroutine began on */
d12be05d 570PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
d95e864f 571
d12be05d
DM
572PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
573PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
8ce2f624 574 in current "register" pad */
d12be05d 575PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
d95e864f 576
d12be05d 577PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
0672f40e 578
0672f40e 579#ifdef USE_LOCALE_COLLATE
115ff745
NC
580PERLVAR(I, collation_name, char *) /* Name of current collation */
581PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
582PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
583PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
f28f4d2a 584PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
c664130f
KW
585PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
586 /* Assume until proven otherwise that it works */
a4a439fb 587PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
115ff745 588PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 589 /* Assume simple collation */
0672f40e
GS
590#endif /* USE_LOCALE_COLLATE */
591
f7416781
KW
592PERLVARI(I, langinfo_buf, char *, NULL)
593PERLVARI(I, langinfo_bufsize, Size_t, 0)
9aac5db8
KW
594PERLVARI(I, setlocale_buf, char *, NULL)
595PERLVARI(I, setlocale_bufsize, Size_t, 0)
f7416781 596
19bc2726
DM
597#ifdef PERL_SAWAMPERSAND
598PERLVAR(I, sawampersand, U8) /* must save all match strings */
9f7da6d5 599#endif
95ca8690 600
19bc2726 601PERLVAR(I, unsafe, bool)
87c1d905 602PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
19bc2726 603
79968a97
NC
604/* current phase the interpreter is in
605 for ordering this structure to remove holes, we're assuming that this is 4
606 bytes. */
607PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
608
609PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
610
611/* This value may be set when embedding for full cleanup */
612/* 0=none, 1=full, 2=full with checks */
613/* mod_perl is special, and also assigns a meaning -1 */
614PERLVARI(I, perl_destruct_level, signed char, 0)
9f7da6d5 615
0672f40e
GS
616#ifdef USE_LOCALE_NUMERIC
617
7738054c 618PERLVARI(I, numeric_standard, int, TRUE)
892e6465
KW
619 /* Assume C locale numerics */
620PERLVARI(I, numeric_underlying, bool, TRUE)
621 /* Assume underlying locale numerics */
4c68b815 622PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
115ff745
NC
623PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
624PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 625
7e5377f7 626# ifdef HAS_POSIX_2008_LOCALE
e1aa2579
KW
627
628PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
629
630# endif
0672f40e
GS
631#endif /* !USE_LOCALE_NUMERIC */
632
a3e1f3a6 633/* Unicode inversion lists */
a3e1f3a6 634PERLVAR(I, Latin1, SV *)
892d8259 635PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
a3e1f3a6 636PERLVAR(I, AboveLatin1, SV *)
e0a1ff7a 637PERLVAR(I, InBitmap, SV *)
a3e1f3a6 638
26faadbd 639PERLVAR(I, NonL1NonFinalFold, SV *)
9d53c457 640PERLVAR(I, HasMultiCharFold, SV *)
26faadbd 641
a3e1f3a6 642/* utf8 character class swashes */
115ff745 643PERLVAR(I, utf8_mark, SV *)
115ff745
NC
644PERLVAR(I, utf8_toupper, SV *)
645PERLVAR(I, utf8_totitle, SV *)
646PERLVAR(I, utf8_tolower, SV *)
647PERLVAR(I, utf8_tofold, SV *)
bde9e88d
KW
648PERLVAR(I, utf8_charname_begin, SV *)
649PERLVAR(I, utf8_charname_continue, SV *)
30f9bdb0 650
63c61c3f 651PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
cac6e0ca 652PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
64935bc6 653PERLVAR(I, GCB_invlist, SV *)
6b659339 654PERLVAR(I, LB_invlist, SV *)
06ae2722 655PERLVAR(I, SB_invlist, SV *)
034602eb 656PERLVAR(I, SCX_invlist, SV *)
ae3bb8ea 657PERLVAR(I, WB_invlist, SV *)
9e7ded3f 658PERLVAR(I, Assigned_invlist, SV *)
34aeb2e9 659PERLVAR(I, seen_deprecated_macro, HV *)
cac6e0ca 660
115ff745
NC
661PERLVAR(I, last_swash_hv, HV *)
662PERLVAR(I, last_swash_tmps, U8 *)
663PERLVAR(I, last_swash_slen, STRLEN)
6c2f1a55 664PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
45d91b83 665PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
d95e864f
NC
666
667#ifdef FCRYPT
115ff745 668PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
79968a97
NC
669#else
670/* One byte hole in the interpreter structure. */
d95e864f
NC
671#endif
672
115ff745 673PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
e6b4660c 674PERLVAR(I, srand_called, bool)
12fbd33b 675
c4a30c8c
NC
676/* Array of signal handlers, indexed by signal number, through which the C
677 signal handler dispatches. */
115ff745 678PERLVAR(I, psig_ptr, SV **)
c4a30c8c 679/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
680 argument to a signal handler. Only one block of memory is allocated for
681 both psig_name and psig_ptr. */
115ff745 682PERLVAR(I, psig_name, SV **)
1d7c1841 683
c5be433b 684#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
685PERLVAR(I, Mem, struct IPerlMem *)
686PERLVAR(I, MemShared, struct IPerlMem *)
687PERLVAR(I, MemParse, struct IPerlMem *)
688PERLVAR(I, Env, struct IPerlEnv *)
689PERLVAR(I, StdIO, struct IPerlStdIO *)
690PERLVAR(I, LIO, struct IPerlLIO *)
691PERLVAR(I, Dir, struct IPerlDir *)
692PERLVAR(I, Sock, struct IPerlSock *)
693PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 694#endif
1d7c1841 695
115ff745
NC
696PERLVAR(I, ptr_table, PTR_TBL_t *)
697PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 698
115ff745 699PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 700
d95e864f 701
1fcf4c12 702#if defined(USE_ITHREADS)
115ff745 703PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 704 regex_padav */
115ff745 705PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 706 values in op_pmoffset of pmop.
402d2eb1
NC
707 Entry 0 is an SV whose PV is a
708 "packed" list of IVs listing
e6853197 709 the now-free slots in the array */
d4d03940
FC
710PERLVAR(I, stashpad, HV **) /* for CopSTASH */
711PERLVARI(I, stashpadmax, PADOFFSET, 64)
712PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
713#endif
714
ea68fd67 715#ifdef USE_REENTRANT_API
115ff745 716PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
717#endif
718
115ff745
NC
719PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
720PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 721
a1ea730d 722#ifdef PERLIO_LAYERS
115ff745
NC
723PERLVARI(I, perlio, PerlIOl *, NULL)
724PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
725PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
726#endif
727
115ff745
NC
728PERLVAR(I, utf8_idstart, SV *)
729PERLVAR(I, utf8_idcont, SV *)
730PERLVAR(I, utf8_xidstart, SV *)
b6912c02 731PERLVAR(I, utf8_perl_idstart, SV *)
eba68aa0 732PERLVAR(I, utf8_perl_idcont, SV *)
115ff745 733PERLVAR(I, utf8_xidcont, SV *)
82686b01 734
115ff745 735PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
147f47de 736
115ff745
NC
737PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
738PERLVARI(I, unitcheckav_save, AV *, NULL)
739 /* save UNITCHECK{}s when compiling */
ece599bd 740
115ff745 741PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 742
15a5279a 743/* Hooks to shared SVs and locks. */
115ff745
NC
744PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
745PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
d0647d4e
NC
746#ifdef NO_MATHOMS
747# define PERL_UNLOCK_HOOK Perl_sv_nosharing
748#else
749/* This reference ensures that the mathoms are linked with perl */
750# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
751#endif
115ff745 752PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 753
115ff745 754PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 755
9e08d3a4 756/* Can shared object be destroyed */
115ff745 757PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 758
01d65469 759#ifndef PERL_MICRO
115ff745 760PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 761#endif
92f022bb 762
115ff745 763PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 764
9e08d3a4
NC
765/* Register of known Method Resolution Orders.
766 What this actually points to is an implementation detail (it may change to
767 a structure incorporating a reference count - use mro_get_from_name to
768 retrieve a C<struct mro_alg *> */
115ff745 769PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
770
771/* Compile-time block start/end hooks */
115ff745 772PERLVAR(I, blockhooks, AV *)
9e08d3a4
NC
773
774/* Everything that folds to a given character, for case insensitivity regex
775 * matching */
115ff745 776PERLVARI(I, utf8_foldclosures, HV *, NULL)
9e08d3a4
NC
777
778/* List of characters that participate in folds (except marks, etc in
779 * multi-char folds) */
115ff745 780PERLVARI(I, utf8_foldable, SV *, NULL)
9e08d3a4 781
115ff745 782PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 783
19bc2726
DM
784PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
785
786/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
787 present always, as -DDEBUGGING must be binary compatible with non. */
788PERLVARI(I, scopestack_name, const char * *, NULL)
789
790PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
791
d67594ff
FC
792/* Hook for File::Glob */
793PERLVARI(I, globhook, globhook_t, NULL)
794
436227c7 795/* The last unconditional member of the interpreter structure when 5.18.0 was
ffee3ff6
NC
796 released. The offset of the end of this is baked into a global variable in
797 any shared perl library which will allow a sanity test in future perl
798 releases. */
d399cf59 799#define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
ffee3ff6 800
f16dd614 801#ifdef PERL_IMPLICIT_CONTEXT
115ff745 802PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 803PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
ba6d381e 804# ifdef PERL_GLOBAL_STRUCT_PRIVATE
115ff745 805PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
ba6d381e 806# endif
f16dd614
DM
807#endif
808
0419d978 809#if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
5ca5a628 810/* For use with the memory debugging code in util.c. This is used only in
0419d978
AC
811 * DEBUGGING builds (as long as the relevant structure is defined), but
812 * defining it in non-debug builds too means that we retain binary
813 * compatibility between otherwise-compatible plain and debug builds. */
115ff745 814PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
0419d978 815#endif
7cb608b5 816
ba6d381e
NC
817#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
818/* File descriptor to talk to the child which dumps scalars. */
115ff745 819PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
820#endif
821
ba6d381e 822
d7a2c63c 823#ifdef DEBUG_LEAKING_SCALARS
115ff745 824PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
825#endif
826
a38ab475
RZ
827PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
828
75d476e2
SM
829#ifdef PERL_TRACE_OPS
830PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
831 If PERL_TRACE_OPS is enabled, we'll dump
832 a summary count of all ops executed in the
833 program at perl_destruct time. For
834 profiling/debugging only. Works only if
835 DEBUGGING is enabled, too. */
836#endif
837
3be8f094
TC
838PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
839
eecd4d11 840PERLVARI(I, dump_re_max_len, STRLEN, 60)
2bfbbbaf 841
f26b33bd
TC
842/* For internal uses of randomness, this ensures the sequence of
843 * random numbers returned by rand() isn't modified by perl's internal
844 * use of randomness.
845 * This is important if the user has called srand() with a seed.
846 */
847
848PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
849
157b3822
NC
850/* If you are adding a U8 or U16, check to see if there are 'Space' comments
851 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
852
853/* Within a stable branch, new variables must be added to the very end, before
854 * this comment, for binary compatibility (the offsets of the old members must
855 * not change).
b83cd129 856 * (Don't forget to add your variable also to perl_clone()!)
e3acbfda 857 * XSUB.h provides wrapper functions via perlapi.h that make this
b83cd129
JH
858 * irrelevant, but not all code may be expected to #include XSUB.h.
859 */