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perlapi: Remove per-thread section; move to real scns
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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/* These variables are per-interpreter in threaded/multiplicity builds,
14 * global otherwise.
15
d7cb65f2 16 * Don't forget to re-run regen/embed.pl to propagate changes! */
cb68f92d 17
ab686ae8 18/* New variables must be added to the very end for binary compatibility. */
6537fe72 19
b8393ac7 20/* DON'T FORGET to add your variable also to perl_clone()! (in sv.c) */
02506efe 21
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22/* The 'I' prefix is only needed for vars that need appropriate #defines
23 * generated when built with or without MULTIPLICITY. It is also used
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24 * to generate the appropriate export list for win32. If the variable
25 * needs to be initialized, use PERLVARI.
cb68f92d 26 *
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27 * When building without MULTIPLICITY, these variables will be truly global.
28 *
29 * Important ones in the first cache line (if alignment is done right) */
30
115ff745 31PERLVAR(I, stack_sp, SV **) /* top of the stack */
115ff745 32PERLVAR(I, op, OP *) /* currently executing op */
115ff745 33PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
907b3e23 34
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35PERLVAR(I, stack_base, SV **)
36PERLVAR(I, stack_max, SV **)
907b3e23 37
115ff745 38PERLVAR(I, savestack, ANY *) /* items that need to be restored when
907b3e23 39 LEAVEing scopes we've ENTERed */
115ff745
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40PERLVAR(I, savestack_ix, I32)
41PERLVAR(I, savestack_max, I32)
42
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43PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
44PERLVAR(I, scopestack_ix, I32)
45PERLVAR(I, scopestack_max, I32)
46
115ff745 47PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
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48PERLVARI(I, tmps_ix, SSize_t, -1)
49PERLVARI(I, tmps_floor, SSize_t, -1)
ba367634 50PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */
19bc2726 51
115ff745 52PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
907b3e23 53 remembering */
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54PERLVAR(I, markstack_ptr, I32 *)
55PERLVAR(I, markstack_max, I32 *)
907b3e23 56
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57PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
58
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59#ifdef PERL_HASH_RANDOMIZE_KEYS
60#ifdef USE_PERL_PERTURB_KEYS
61PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
62#endif
0e0ab621 63PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
6a5b4183 64#endif
19bc2726 65PERLVAR(I, strtab, HV *) /* shared string table */
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66/* prog counter for the currently executing OP_MULTIDEREF Used to signal
67 * to S_find_uninit_var() where we are */
68PERLVAR(I, multideref_pc, UNOP_AUX_item *)
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69
70/* Fields used by magic variables such as $@, $/ and so on */
71PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
5585e758 72PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
19bc2726 73
bc2f1ca1 74PERLVAR(I, tainting, bool) /* ? doing taint checks */
d48c660d 75PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
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76
77/* PL_delaymagic is currently used for two purposes: to assure simultaneous
78 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
79 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
80 * flag; then various places such as av_store() skip mg_set(ary) if this
81 * flag is set, and various magic vtable methods set flags like
82 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
83 * control returns to pp_push or whatever, it sees if any of those flags
84 * have been set, and if so finally calls mg_set().
85 *
86 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
87 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
88 * in hot code like pp_push.
89 */
19bc2726 90PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
a68090fe 91
1172c104 92/*
168f9cb8 93=for apidoc_section $warning
b5282d7c 94=for apidoc mn|U8|PL_dowarn
19bc2726 95
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96The C variable that roughly corresponds to Perl's C<$^W> warning variable.
97However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
98collection of flag bits.
19bc2726 99
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100On threaded perls, each thread has an independent copy of this variable;
101each initialized at creation time with the current value of the creating
102thread's copy.
103
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104=cut
105*/
106
107PERLVAR(I, dowarn, U8)
108
109#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
110# define PERL___I -1
111#else
112# define PERL___I 1
113#endif
114PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
115#undef PERL___I
116
c07b34e4 117/*
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118=for apidoc Amn|GV *|PL_defgv
119
120The GV representing C<*_>. Useful for access to C<$_>.
121
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122On threaded perls, each thread has an independent copy of this variable;
123each initialized at creation time with the current value of the creating
124thread's copy.
125
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126=cut
127*/
128
129PERLVAR(I, localizing, U8) /* are we processing a local() list? */
130PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
131PERLVAR(I, defgv, GV *) /* the *_ glob */
132
133/*
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134=for apidoc Amn|HV*|PL_curstash
135
136The stash for the package code will be compiled into.
137
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138On threaded perls, each thread has an independent copy of this variable;
139each initialized at creation time with the current value of the creating
140thread's copy.
141
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142=cut
143*/
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144
145/* Stashes */
146PERLVAR(I, defstash, HV *) /* main symbol table */
147PERLVAR(I, curstash, HV *) /* symbol table for current package */
148
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149/*
150=for apidoc Amn|COP*|PL_curcop
151
152The currently active COP (control op) roughly representing the current
153statement in the source.
154
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155On threaded perls, each thread has an independent copy of this variable;
156each initialized at creation time with the current value of the creating
157thread's copy.
158
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159=cut
160*/
161
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162PERLVAR(I, curcop, COP *)
163PERLVAR(I, curstack, AV *) /* THE STACK */
164PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
165PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
166 happening */
167
168/* memory management */
169PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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170
171PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
172PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
173
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174/* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
175PERLVARI(I, reg_curpm, PMOP*, NULL)
176
19bc2726 177/* the currently active slab in a chain of slabs of regmatch states,
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178 * and the currently active state within that slab. This stack of states
179 * is shared amongst re-entrant calls to the regex engine */
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180
181PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
182PERLVAR(I, regmatch_state, regmatch_state *)
183
184PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
185
186/*
36f453d1 187=for apidoc_section $SV
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188=for apidoc Amn|SV|PL_sv_undef
189This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
190
191=for apidoc Amn|SV|PL_sv_no
fbe13c60 192This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
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193C<&PL_sv_no>.
194
195=for apidoc Amn|SV|PL_sv_yes
fbe13c60 196This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
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197C<&PL_sv_yes>.
198
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199=for apidoc Amn|SV|PL_sv_zero
200This readonly SV has a zero numeric value and a C<"0"> string value. It's
201similar to C<L</PL_sv_no>> except for its string value. Can be used as a
202cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
203C<&PL_sv_zero>. Introduced in 5.28.
204
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205=cut
206*/
207
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208#ifdef MULTIPLICITY
209PERLVAR(I, sv_yes, SV)
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210PERLVAR(I, sv_undef, SV)
211PERLVAR(I, sv_no, SV)
5a6c2837 212PERLVAR(I, sv_zero, SV)
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213#else
214/* store the immortals as an array to ensure they are contiguous in
215 * memory: makes SvIMMORTAL_INTERP(sv) possible */
216PERLVARA(I, sv_immortals, 4, SV)
217#endif
5a6c2837 218
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219PERLVAR(I, padname_undef, PADNAME)
220PERLVAR(I, padname_const, PADNAME)
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221
222/*
223=for apidoc Cmn||PL_Sv
224
225A scratch pad SV for whatever temporary use you need. Chiefly used as a
226fallback by macros on platforms where L<perlapi/PERL_USE_GCC_BRACE_GROUPS>> is
227unavailable, and which would otherwise would evaluate their SV parameter more
228than once.
229
230=cut
231*/
232PERLVAR(I, Sv, SV *)
233
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234PERLVAR(I, parser, yy_parser *) /* current parser state */
235
236PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
237
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238
239/*
240=for apidoc Amn|STRLEN|PL_na
241
242A convenience variable which is typically used with C<SvPV> when one
243doesn't care about the length of the string. It is usually more efficient
244to either declare a local variable and use that instead or to use the
245C<SvPV_nolen> macro.
246
247=cut
248*/
249
115ff745 250PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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251 Not Applicable */
252
253/* stat stuff */
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254PERLVAR(I, statcache, Stat_t) /* _ */
255PERLVAR(I, statgv, GV *)
256PERLVARI(I, statname, SV *, NULL)
907b3e23 257
907b3e23 258/*
36f453d1 259=for apidoc_section $io
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260=for apidoc mn|SV*|PL_rs
261
262The input record separator - C<$/> in Perl space.
263
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264On threaded perls, each thread has an independent copy of this variable;
265each initialized at creation time with the current value of the creating
266thread's copy.
267
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268=for apidoc mn|GV*|PL_last_in_gv
269
154e47c8 270The GV which was last used for a filehandle input operation. (C<< <FH> >>)
907b3e23 271
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272On threaded perls, each thread has an independent copy of this variable;
273each initialized at creation time with the current value of the creating
274thread's copy.
275
e23d9e2f 276=for apidoc mn|GV*|PL_ofsgv
907b3e23 277
e23d9e2f 278The glob containing the output field separator - C<*,> in Perl space.
907b3e23 279
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280On threaded perls, each thread has an independent copy of this variable;
281each initialized at creation time with the current value of the creating
282thread's copy.
283
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284=cut
285*/
286
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287PERLVAR(I, rs, SV *) /* input record separator $/ */
288PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
289PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
290PERLVAR(I, defoutgv, GV *) /* default FH for output */
291PERLVARI(I, chopset, const char *, " \n-") /* $: */
292PERLVAR(I, formtarget, SV *)
293PERLVAR(I, bodytarget, SV *)
294PERLVAR(I, toptarget, SV *)
907b3e23 295
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296
297PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
298PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
907b3e23 299
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300PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
301PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
302PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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303
304/* statics "owned" by various functions */
115ff745 305PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 306
115ff745 307PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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308
309/* sort stuff */
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310PERLVAR(I, sortcop, OP *) /* user defined sort routine */
311PERLVAR(I, sortstash, HV *) /* which is in some package or other */
312PERLVAR(I, firstgv, GV *) /* $a */
313PERLVAR(I, secondgv, GV *) /* $b */
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314
315/* float buffer */
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316PERLVAR(I, efloatbuf, char *)
317PERLVAR(I, efloatsize, STRLEN)
907b3e23 318
115ff745 319PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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320 indentation level */
321
7b93aae2 322/*
36f453d1 323=for apidoc_section $embedding
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324=for apidoc Amn|U8|PL_exit_flags
325
326Contains flags controlling perl's behaviour on exit():
327
328=over
329
330=item * C<PERL_EXIT_DESTRUCT_END>
331
332If set, END blocks are executed when the interpreter is destroyed.
333This is normally set by perl itself after the interpreter is
334constructed.
335
336=item * C<PERL_EXIT_ABORT>
337
338Call C<abort()> on exit. This is used internally by perl itself to
339abort if exit is called while processing exit.
340
341=item * C<PERL_EXIT_WARN>
342
343Warn on exit.
344
345=item * C<PERL_EXIT_EXPECTED>
346
347Set by the L<perlfunc/exit> operator.
348
349=back
350
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351=for apidoc Amnh||PERL_EXIT_EXPECTED
352=for apidoc Amnh||PERL_EXIT_ABORT
353=for apidoc Amnh||PERL_EXIT_DESTRUCT_END
354=for apidoc Amnh||PERL_EXIT_WARN
355
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356On threaded perls, each thread has an independent copy of this variable;
357each initialized at creation time with the current value of the creating
358thread's copy.
359
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360=cut
361*/
362
e914d9bb 363PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 364
115ff745 365PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
31f05a37 366PERLVAR(I, in_utf8_CTYPE_locale, bool)
165a1c52 367PERLVAR(I, in_utf8_COLLATE_locale, bool)
b8df1494 368PERLVAR(I, in_utf8_turkic_locale, bool)
bffa51e2 369#if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
49d7d366 370PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
bffa51e2 371#endif
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KW
372PERLVARA(I, locale_utf8ness, 256, char)
373
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374#ifdef USE_LOCALE_CTYPE
375 PERLVAR(I, warn_locale, SV *)
376#endif
907b3e23 377
87c1d905 378PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
907b3e23 379
9ea12537 380/*
36f453d1 381=for apidoc_section $optree_construction
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382=for apidoc Amn|peep_t|PL_peepp
383
384Pointer to the per-subroutine peephole optimiser. This is a function
385that gets called at the end of compilation of a Perl subroutine (or
386equivalently independent piece of Perl code) to perform fixups of
387some ops and to perform small-scale optimisations. The function is
388called once for each subroutine that is compiled, and is passed, as sole
389parameter, a pointer to the op that is the entry point to the subroutine.
390It modifies the op tree in place.
391
392The peephole optimiser should never be completely replaced. Rather,
393add code to it by wrapping the existing optimiser. The basic way to do
394this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
395If the new code wishes to operate on ops throughout the subroutine's
396structure, rather than just at the top level, it is likely to be more
397convenient to wrap the L</PL_rpeepp> hook.
398
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399On threaded perls, each thread has an independent copy of this variable;
400each initialized at creation time with the current value of the creating
401thread's copy.
402
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403=cut
404*/
405
115ff745 406PERLVARI(I, peepp, peep_t, Perl_peep)
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407
408/*
409=for apidoc Amn|peep_t|PL_rpeepp
410
411Pointer to the recursive peephole optimiser. This is a function
412that gets called at the end of compilation of a Perl subroutine (or
413equivalently independent piece of Perl code) to perform fixups of some
414ops and to perform small-scale optimisations. The function is called
415once for each chain of ops linked through their C<op_next> fields;
416it is recursively called to handle each side chain. It is passed, as
417sole parameter, a pointer to the op that is at the head of the chain.
418It modifies the op tree in place.
419
420The peephole optimiser should never be completely replaced. Rather,
421add code to it by wrapping the existing optimiser. The basic way to do
422this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
423If the new code wishes to operate only on ops at a subroutine's top level,
424rather than throughout the structure, it is likely to be more convenient
425to wrap the L</PL_peepp> hook.
426
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427On threaded perls, each thread has an independent copy of this variable;
428each initialized at creation time with the current value of the creating
429thread's copy.
430
9ea12537
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431=cut
432*/
433
115ff745 434PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 435
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436/*
437=for apidoc Amn|Perl_ophook_t|PL_opfreehook
438
439When 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.
440This allows extensions to free any extra attribute they have locally attached to an OP.
441It is also assured to first fire for the parent OP and then for its kids.
442
443When 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.
444
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445On threaded perls, each thread has an independent copy of this variable;
446each initialized at creation time with the current value of the creating
447thread's copy.
448
2f175318
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449=cut
450*/
451
115ff745 452PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 453
115ff745
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454PERLVARI(I, watchaddr, char **, 0)
455PERLVAR(I, watchok, char *)
907b3e23 456
115ff745 457PERLVAR(I, perldb, U32)
d95e864f 458
115ff745 459PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 460
79968a97
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461PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
462
49f531da 463/* pseudo environmental stuff */
115ff745
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464PERLVAR(I, origargc, int)
465PERLVAR(I, origargv, char **)
466PERLVAR(I, envgv, GV *)
467PERLVAR(I, incgv, GV *)
468PERLVAR(I, hintgv, GV *)
469PERLVAR(I, origfilename, char *)
9a189793 470PERLVARI(I, xsubfilename, const char *, NULL)
115ff745
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471PERLVAR(I, diehook, SV *)
472PERLVAR(I, warnhook, SV *)
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473
474/* switches */
115ff745 475PERLVAR(I, patchlevel, SV *)
115ff745
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476PERLVAR(I, localpatches, const char * const *)
477PERLVARI(I, splitstr, const char *, " ")
478
479PERLVAR(I, minus_c, bool)
480PERLVAR(I, minus_n, bool)
481PERLVAR(I, minus_p, bool)
482PERLVAR(I, minus_l, bool)
483PERLVAR(I, minus_a, bool)
484PERLVAR(I, minus_F, bool)
485PERLVAR(I, doswitches, bool)
486PERLVAR(I, minus_E, bool)
954c1994 487
115ff745
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488PERLVAR(I, inplace, char *)
489PERLVAR(I, e_script, SV *)
49f531da 490
115ff745 491PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 492
115ff745 493PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 494 /* top fd to pass to subprocesses */
115ff745 495PERLVAR(I, statusvalue, I32) /* $? */
49f531da 496#ifdef VMS
115ff745 497PERLVAR(I, statusvalue_vms, U32)
e5218da5 498#else
115ff745 499PERLVAR(I, statusvalue_posix, I32)
49f531da
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500#endif
501
115ff745
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502PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
503PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 504
49f531da 505/* shortcuts to various I/O objects */
115ff745
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506PERLVAR(I, stdingv, GV *) /* *STDIN */
507PERLVAR(I, stderrgv, GV *) /* *STDERR */
115ff745
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508PERLVAR(I, argvgv, GV *) /* *ARGV */
509PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
510PERLVAR(I, argvout_stack, AV *)
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511
512/* shortcuts to regexp stuff */
115ff745 513PERLVAR(I, replgv, GV *) /* *^R */
49f531da
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514
515/* shortcuts to misc objects */
115ff745 516PERLVAR(I, errgv, GV *) /* *@ */
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517
518/* shortcuts to debugging objects */
115ff745
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519PERLVAR(I, DBgv, GV *) /* *DB::DB */
520PERLVAR(I, DBline, GV *) /* *DB::line */
954c1994
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521
522/*
36f453d1 523=for apidoc_section $debugging
2eb25c99 524=for apidoc mn|GV *|PL_DBsub
954c1994
GS
525When Perl is run in debugging mode, with the B<-d> switch, this GV contains
526the SV which holds the name of the sub being debugged. This is the C
527variable which corresponds to Perl's $DB::sub variable. See
fbe13c60 528C<L</PL_DBsingle>>.
954c1994 529
36f453d1
KW
530On threaded perls, each thread has an independent copy of this variable;
531each initialized at creation time with the current value of the creating
532thread's copy.
533
2eb25c99 534=for apidoc mn|SV *|PL_DBsingle
954c1994 535When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 536boolean which indicates whether subs are being single-stepped.
954c1994
GS
537Single-stepping is automatically turned on after every step. This is the C
538variable which corresponds to Perl's $DB::single variable. See
fbe13c60 539C<L</PL_DBsub>>.
954c1994 540
36f453d1
KW
541On threaded perls, each thread has an independent copy of this variable;
542each initialized at creation time with the current value of the creating
543thread's copy.
544
2eb25c99 545=for apidoc mn|SV *|PL_DBtrace
954c1994
GS
546Trace variable used when Perl is run in debugging mode, with the B<-d>
547switch. This is the C variable which corresponds to Perl's $DB::trace
fbe13c60 548variable. See C<L</PL_DBsingle>>.
954c1994 549
36f453d1
KW
550On threaded perls, each thread has an independent copy of this variable;
551each initialized at creation time with the current value of the creating
552thread's copy.
553
954c1994
GS
554=cut
555*/
556
115ff745
NC
557PERLVAR(I, DBsub, GV *) /* *DB::sub */
558PERLVAR(I, DBsingle, SV *) /* $DB::single */
559PERLVAR(I, DBtrace, SV *) /* $DB::trace */
560PERLVAR(I, DBsignal, SV *) /* $DB::signal */
561PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
49f531da 562
a6d69523
TC
563PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
564
49f531da 565/* symbol tables */
115ff745
NC
566PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
567PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
568PERLVAR(I, curstname, SV *) /* name of current package */
569PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
570PERLVAR(I, endav, AV *) /* names of END subroutines */
571PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
572PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
573PERLVAR(I, initav, AV *) /* names of INIT subroutines */
49f531da 574
49f531da 575/* subprocess state */
115ff745 576PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
49f531da
NIS
577
578/* internal state */
115ff745 579PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 580
49f531da 581/* current interpreter roots */
115ff745
NC
582PERLVAR(I, main_cv, CV *)
583PERLVAR(I, main_root, OP *)
584PERLVAR(I, main_start, OP *)
585PERLVAR(I, eval_root, OP *)
586PERLVAR(I, eval_start, OP *)
49f531da
NIS
587
588/* runtime control stuff */
115ff745 589PERLVARI(I, curcopdb, COP *, NULL)
49f531da 590
115ff745
NC
591PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
592PERLVAR(I, lastfd, int) /* what to preserve mode on */
593PERLVAR(I, oldname, char *) /* what to preserve mode on */
00accf8d
NC
594/* Elements in this array have ';' appended and are injected as a single line
595 into the tokeniser. You can't put any (literal) newlines into any program
596 you stuff in into this array, as the point where it's injected is expecting
597 a single physical line. */
115ff745
NC
598PERLVAR(I, preambleav, AV *)
599PERLVAR(I, mess_sv, SV *)
600PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
19bc2726 601
79968a97
NC
602/* funky return mechanisms */
603PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
604
71eebe1e 605/* statics moved here for shared library purposes */
115ff745
NC
606PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
607PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
608PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
609PERLVARI(I, laststype, U16, OP_STAT)
19bc2726 610
115ff745 611PERLVARI(I, laststatval, int, -1)
d4cce5f1 612
19bc2726
DM
613PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
614 assignment? */
615
4b556e6c 616/* interpreter atexit processing */
115ff745
NC
617PERLVARI(I, exitlistlen, I32, 0) /* length of same */
618PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 619 /* list of exit functions */
954c1994
GS
620
621/*
36f453d1 622=for apidoc_section $HV
954c1994
GS
623=for apidoc Amn|HV*|PL_modglobal
624
7889fe52 625C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 626extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
627In a pinch, it can also be used as a symbol table for extensions
628to share data among each other. It is a good idea to use keys
954c1994
GS
629prefixed by the package name of the extension that owns the data.
630
36f453d1
KW
631On threaded perls, each thread has an independent copy of this variable;
632each initialized at creation time with the current value of the creating
633thread's copy.
634
954c1994
GS
635=cut
636*/
637
115ff745 638PERLVAR(I, modglobal, HV *) /* per-interp module data */
cb68f92d
GS
639
640/* these used to be in global before 5.004_68 */
115ff745 641PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 642
115ff745 643PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 644
115ff745 645PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb 646PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
d12be05d
DM
647PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
648PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
4b556e6c
JD
649
650#ifdef HAVE_INTERP_INTERN
115ff745 651PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 652 /* platform internals */
4b556e6c
JD
653#endif
654
7fae4e64 655/* more statics moved here */
115ff745 656PERLVAR(I, DBcv, CV *) /* from perl.c */
75010704
DM
657PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
658 compile-time common elem detection */
56953603 659
19bc2726
DM
660PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
661
115ff745
NC
662PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
663PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
664PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
665PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 666
19bc2726 667
985213f2
AB
668PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
669PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
670PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
671PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 672PERLVARI(I, an, U32, 0) /* malloc sequence number */
be2b6a89 673
79968a97
NC
674/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
675PERLVARI(I, breakable_sub_gen, U32, 0)
676
be2b6a89
DM
677#ifdef DEBUGGING
678 /* exercise wrap-around */
679 #define PERL_COP_SEQMAX (U32_MAX-50)
680#else
681 #define PERL_COP_SEQMAX 0
682#endif
115ff745 683PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
be2b6a89
DM
684#undef PERL_COP_SEQMAX
685
115ff745
NC
686PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
687PERLVAR(I, origalen, U32)
688PERLVAR(I, origenviron, char **)
ca0c25f6 689#ifdef PERL_USES_PL_PIDSTATUS
115ff745 690PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 691#endif
115ff745 692PERLVAR(I, osname, char *) /* operating system */
5c728af0 693
dc37125b
DM
694PERLVAR(I, sighandlerp, Sighandler_t)
695/* these two are provided only to solve library linkage issues; they
696 * should not be hooked by user code */
697PERLVAR(I, sighandler1p, Sighandler1_t)
698PERLVAR(I, sighandler3p, Sighandler3_t)
0672f40e 699
115ff745 700PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 701
8162b70e 702PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
79968a97 703
e897f2d7 704PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
9f7da6d5 705
115ff745 706PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 707
115ff745 708PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 709
115ff745 710PERLVAR(I, subline, I32) /* line this subroutine began on */
d12be05d 711PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
d95e864f 712
d12be05d
DM
713PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
714PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
8ce2f624 715 in current "register" pad */
d12be05d 716PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
d95e864f 717
d12be05d 718PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
0672f40e 719
e9bc6d6b
KW
720#if defined(USE_POSIX_2008_LOCALE) \
721 && defined(USE_THREAD_SAFE_LOCALE) \
722 && ! defined(HAS_QUERYLOCALE)
723
724PERLVARA(I, curlocales, 12, char *)
725
726#endif
0672f40e 727#ifdef USE_LOCALE_COLLATE
e9bc6d6b 728
115ff745
NC
729PERLVAR(I, collation_name, char *) /* Name of current collation */
730PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
731PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
732PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
f28f4d2a 733PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
c664130f
KW
734PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
735 /* Assume until proven otherwise that it works */
a4a439fb 736PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
115ff745 737PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 738 /* Assume simple collation */
0672f40e
GS
739#endif /* USE_LOCALE_COLLATE */
740
f7416781
KW
741PERLVARI(I, langinfo_buf, char *, NULL)
742PERLVARI(I, langinfo_bufsize, Size_t, 0)
9aac5db8
KW
743PERLVARI(I, setlocale_buf, char *, NULL)
744PERLVARI(I, setlocale_bufsize, Size_t, 0)
f7416781 745
19bc2726
DM
746#ifdef PERL_SAWAMPERSAND
747PERLVAR(I, sawampersand, U8) /* must save all match strings */
9f7da6d5 748#endif
95ca8690 749
79968a97
NC
750/* current phase the interpreter is in
751 for ordering this structure to remove holes, we're assuming that this is 4
752 bytes. */
753PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
754
755PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
756
63251dfc
RL
757PERLVAR(I, unsafe, bool)
758PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
759
daf9aebe 760/*
36f453d1 761=for apidoc_section $embedding
daf9aebe
TC
762=for apidoc Amn|signed char|PL_perl_destruct_level
763
764This value may be set when embedding for full cleanup.
765
766Possible values:
767
768=over
769
770=item * 0 - none
771
772=item * 1 - full
773
774=item * 2 or greater - full with checks.
775
776=back
777
778If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
779value of C<PL_perl_destruct_level> its value is used instead.
780
36f453d1
KW
781On threaded perls, each thread has an independent copy of this variable;
782each initialized at creation time with the current value of the creating
783thread's copy.
784
daf9aebe
TC
785=cut
786*/
79968a97
NC
787/* mod_perl is special, and also assigns a meaning -1 */
788PERLVARI(I, perl_destruct_level, signed char, 0)
9f7da6d5 789
63251dfc
RL
790PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
791
792PERLVAR(I, srand_called, bool)
793
0672f40e
GS
794#ifdef USE_LOCALE_NUMERIC
795
892e6465
KW
796PERLVARI(I, numeric_underlying, bool, TRUE)
797 /* Assume underlying locale numerics */
4c68b815 798PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
63251dfc
RL
799
800PERLVARI(I, numeric_standard, int, TRUE)
801 /* Assume C locale numerics */
115ff745
NC
802PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
803PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 804
7e5377f7 805# ifdef HAS_POSIX_2008_LOCALE
e1aa2579
KW
806
807PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
808
809# endif
0672f40e
GS
810#endif /* !USE_LOCALE_NUMERIC */
811
c4a30c8c
NC
812/* Array of signal handlers, indexed by signal number, through which the C
813 signal handler dispatches. */
115ff745 814PERLVAR(I, psig_ptr, SV **)
c4a30c8c 815/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
816 argument to a signal handler. Only one block of memory is allocated for
817 both psig_name and psig_ptr. */
115ff745 818PERLVAR(I, psig_name, SV **)
1d7c1841 819
c5be433b 820#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
821PERLVAR(I, Mem, struct IPerlMem *)
822PERLVAR(I, MemShared, struct IPerlMem *)
823PERLVAR(I, MemParse, struct IPerlMem *)
824PERLVAR(I, Env, struct IPerlEnv *)
825PERLVAR(I, StdIO, struct IPerlStdIO *)
826PERLVAR(I, LIO, struct IPerlLIO *)
827PERLVAR(I, Dir, struct IPerlDir *)
828PERLVAR(I, Sock, struct IPerlSock *)
829PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 830#endif
1d7c1841 831
115ff745
NC
832PERLVAR(I, ptr_table, PTR_TBL_t *)
833PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 834
115ff745 835PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 836
d95e864f 837
1fcf4c12 838#if defined(USE_ITHREADS)
115ff745 839PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 840 regex_padav */
115ff745 841PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 842 values in op_pmoffset of pmop.
402d2eb1
NC
843 Entry 0 is an SV whose PV is a
844 "packed" list of IVs listing
e6853197 845 the now-free slots in the array */
d4d03940
FC
846PERLVAR(I, stashpad, HV **) /* for CopSTASH */
847PERLVARI(I, stashpadmax, PADOFFSET, 64)
848PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
849#endif
850
ea68fd67 851#ifdef USE_REENTRANT_API
115ff745 852PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
853#endif
854
115ff745
NC
855PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
856PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 857
a1ea730d 858#ifdef PERLIO_LAYERS
115ff745
NC
859PERLVARI(I, perlio, PerlIOl *, NULL)
860PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
861PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
862#endif
863
115ff745
NC
864PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
865PERLVARI(I, unitcheckav_save, AV *, NULL)
866 /* save UNITCHECK{}s when compiling */
ece599bd 867
115ff745 868PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 869
15a5279a 870/* Hooks to shared SVs and locks. */
115ff745
NC
871PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
872PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
238965b4
KW
873
874GCC_DIAG_IGNORE(-Wdeprecated-declarations)
d0647d4e
NC
875#ifdef NO_MATHOMS
876# define PERL_UNLOCK_HOOK Perl_sv_nosharing
877#else
878/* This reference ensures that the mathoms are linked with perl */
879# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
880#endif
115ff745 881PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 882
238965b4
KW
883GCC_DIAG_RESTORE
884
115ff745 885PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 886
9e08d3a4 887/* Can shared object be destroyed */
115ff745 888PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 889
01d65469 890#ifndef PERL_MICRO
115ff745 891PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 892#endif
92f022bb 893
115ff745 894PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 895
9e08d3a4
NC
896/* Register of known Method Resolution Orders.
897 What this actually points to is an implementation detail (it may change to
898 a structure incorporating a reference count - use mro_get_from_name to
899 retrieve a C<struct mro_alg *> */
115ff745 900PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
901
902/* Compile-time block start/end hooks */
115ff745 903PERLVAR(I, blockhooks, AV *)
9e08d3a4 904
115ff745 905PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 906
19bc2726
DM
907PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
908
909/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
910 present always, as -DDEBUGGING must be binary compatible with non. */
911PERLVARI(I, scopestack_name, const char * *, NULL)
912
913PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
914
d67594ff
FC
915/* Hook for File::Glob */
916PERLVARI(I, globhook, globhook_t, NULL)
917
0f60372e 918#if defined(MULTIPLICITY)
436227c7 919/* The last unconditional member of the interpreter structure when 5.18.0 was
ffee3ff6
NC
920 released. The offset of the end of this is baked into a global variable in
921 any shared perl library which will allow a sanity test in future perl
922 releases. */
0f60372e
KW
923# define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
924#endif
ffee3ff6 925
f16dd614 926#ifdef PERL_IMPLICIT_CONTEXT
115ff745 927PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 928PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
f16dd614
DM
929#endif
930
0419d978 931#if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
5ca5a628 932/* For use with the memory debugging code in util.c. This is used only in
0419d978
AC
933 * DEBUGGING builds (as long as the relevant structure is defined), but
934 * defining it in non-debug builds too means that we retain binary
935 * compatibility between otherwise-compatible plain and debug builds. */
115ff745 936PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
0419d978 937#endif
7cb608b5 938
ba6d381e
NC
939#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
940/* File descriptor to talk to the child which dumps scalars. */
115ff745 941PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
942#endif
943
ba6d381e 944
d7a2c63c 945#ifdef DEBUG_LEAKING_SCALARS
115ff745 946PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
947#endif
948
a38ab475
RZ
949PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
950
75d476e2
SM
951#ifdef PERL_TRACE_OPS
952PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
953 If PERL_TRACE_OPS is enabled, we'll dump
954 a summary count of all ops executed in the
955 program at perl_destruct time. For
956 profiling/debugging only. Works only if
957 DEBUGGING is enabled, too. */
958#endif
959
3be8f094
TC
960PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
961
eecd4d11 962PERLVARI(I, dump_re_max_len, STRLEN, 60)
2bfbbbaf 963
f26b33bd
TC
964/* For internal uses of randomness, this ensures the sequence of
965 * random numbers returned by rand() isn't modified by perl's internal
966 * use of randomness.
967 * This is important if the user has called srand() with a seed.
968 */
969
970PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
971
8c90d3a9
KW
972PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
973
a8def808
KW
974PERLVAR(I, AboveLatin1, SV *)
975PERLVAR(I, Assigned_invlist, SV *)
976PERLVAR(I, GCB_invlist, SV *)
977PERLVAR(I, HasMultiCharFold, SV *)
978PERLVAR(I, InMultiCharFold, SV *)
979PERLVAR(I, Latin1, SV *)
980PERLVAR(I, LB_invlist, SV *)
981PERLVAR(I, SB_invlist, SV *)
982PERLVAR(I, SCX_invlist, SV *)
983PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
984
985/* List of characters that participate in any fold defined by Unicode */
986PERLVAR(I, in_some_fold, SV *)
987
668d1998
KW
988/* Everything that folds to a given character, for case insensitivity regex
989 * matching */
990PERLVAR(I, utf8_foldclosures, SV *)
991
a8def808
KW
992PERLVAR(I, utf8_idcont, SV *)
993PERLVAR(I, utf8_idstart, SV *)
994PERLVAR(I, utf8_perl_idcont, SV *)
995PERLVAR(I, utf8_perl_idstart, SV *)
996PERLVAR(I, utf8_xidcont, SV *)
997PERLVAR(I, utf8_xidstart, SV *)
998PERLVAR(I, WB_invlist, SV *)
999PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
1000PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
1001PERLVAR(I, utf8_toupper, SV *)
1002PERLVAR(I, utf8_totitle, SV *)
1003PERLVAR(I, utf8_tolower, SV *)
1004PERLVAR(I, utf8_tofold, SV *)
1005PERLVAR(I, utf8_tosimplefold, SV *)
1006PERLVAR(I, utf8_charname_begin, SV *)
1007PERLVAR(I, utf8_charname_continue, SV *)
1008PERLVAR(I, utf8_mark, SV *)
1009PERLVARI(I, InBitmap, SV *, NULL)
1010PERLVAR(I, CCC_non0_non230, SV *)
1011PERLVAR(I, Private_Use, SV *)
1012
d2c9cb53
KW
1013#ifdef HAS_MBRLEN
1014PERLVAR(I, mbrlen_ps, mbstate_t)
1015#endif
5a6637f0
KW
1016#ifdef HAS_MBRTOWC
1017PERLVAR(I, mbrtowc_ps, mbstate_t)
1018#endif
1019#ifdef HAS_WCRTOMB
1020PERLVAR(I, wcrtomb_ps, mbstate_t)
1021#endif
d2c9cb53 1022
157b3822
NC
1023/* If you are adding a U8 or U16, check to see if there are 'Space' comments
1024 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
1025
1026/* Within a stable branch, new variables must be added to the very end, before
1027 * this comment, for binary compatibility (the offsets of the old members must
1028 * not change).
b83cd129 1029 * (Don't forget to add your variable also to perl_clone()!)
b83cd129 1030 */