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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 */
907b3e23 36#ifdef OP_IN_REGISTER
115ff745 37PERLVAR(I, opsave, OP *)
907b3e23 38#else
115ff745 39PERLVAR(I, op, OP *) /* currently executing op */
907b3e23 40#endif
115ff745 41PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
907b3e23 42
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43PERLVAR(I, stack_base, SV **)
44PERLVAR(I, stack_max, SV **)
907b3e23 45
115ff745 46PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
f2b88940 47/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
2d8edfd1 48 present always, as -DDEBUGGING must be binary compatible with non. */
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49PERLVARI(I, scopestack_name, const char * *, NULL)
50PERLVAR(I, scopestack_ix, I32)
51PERLVAR(I, scopestack_max, I32)
907b3e23 52
115ff745 53PERLVAR(I, savestack, ANY *) /* items that need to be restored when
907b3e23 54 LEAVEing scopes we've ENTERed */
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55PERLVAR(I, savestack_ix, I32)
56PERLVAR(I, savestack_max, I32)
57
58PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
59PERLVARI(I, tmps_ix, I32, -1)
60PERLVARI(I, tmps_floor, I32, -1)
61PERLVAR(I, tmps_max, I32)
62PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
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63 assignment? */
64
115ff745 65PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
907b3e23 66 remembering */
115ff745
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67PERLVAR(I, markstack_ptr, I32 *)
68PERLVAR(I, markstack_max, I32 *)
907b3e23 69
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70PERLVAR(I, Sv, SV *) /* used to hold temporary values */
71PERLVAR(I, Xpv, XPV *) /* used to hold temporary values */
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72
73/*
74=for apidoc Amn|STRLEN|PL_na
75
76A convenience variable which is typically used with C<SvPV> when one
77doesn't care about the length of the string. It is usually more efficient
78to either declare a local variable and use that instead or to use the
79C<SvPV_nolen> macro.
80
81=cut
82*/
83
115ff745 84PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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85 Not Applicable */
86
87/* stat stuff */
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88PERLVAR(I, statbuf, Stat_t)
89PERLVAR(I, statcache, Stat_t) /* _ */
90PERLVAR(I, statgv, GV *)
91PERLVARI(I, statname, SV *, NULL)
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92
93#ifdef HAS_TIMES
115ff745 94PERLVAR(I, timesbuf, struct tms)
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95#endif
96
97/* Fields used by magic variables such as $@, $/ and so on */
115ff745 98PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
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99
100/*
101=for apidoc mn|SV*|PL_rs
102
103The input record separator - C<$/> in Perl space.
104
105=for apidoc mn|GV*|PL_last_in_gv
106
107The GV which was last used for a filehandle input operation. (C<< <FH> >>)
108
e23d9e2f 109=for apidoc mn|GV*|PL_ofsgv
907b3e23 110
e23d9e2f 111The glob containing the output field separator - C<*,> in Perl space.
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112
113=cut
114*/
115
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116PERLVAR(I, rs, SV *) /* input record separator $/ */
117PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
118PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
119PERLVAR(I, defoutgv, GV *) /* default FH for output */
120PERLVARI(I, chopset, const char *, " \n-") /* $: */
121PERLVAR(I, formtarget, SV *)
122PERLVAR(I, bodytarget, SV *)
123PERLVAR(I, toptarget, SV *)
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124
125/* Stashes */
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126PERLVAR(I, defstash, HV *) /* main symbol table */
127PERLVAR(I, curstash, HV *) /* symbol table for current package */
128
129PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
130PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
131PERLVAR(I, curcop, COP *)
132PERLVAR(I, curstack, AV *) /* THE STACK */
133PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
134PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
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135 happening */
136
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137PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
138PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
139PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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140
141/* statics "owned" by various functions */
115ff745 142PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 143
115ff745 144PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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145
146/* sort stuff */
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147PERLVAR(I, sortcop, OP *) /* user defined sort routine */
148PERLVAR(I, sortstash, HV *) /* which is in some package or other */
149PERLVAR(I, firstgv, GV *) /* $a */
150PERLVAR(I, secondgv, GV *) /* $b */
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151
152/* float buffer */
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153PERLVAR(I, efloatbuf, char *)
154PERLVAR(I, efloatsize, STRLEN)
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155
156/* regex stuff */
157
115ff745 158PERLVAR(I, reg_state, struct re_save_state)
907b3e23 159
115ff745 160PERLVAR(I, regdummy, regnode) /* from regcomp.c */
907b3e23 161
115ff745 162PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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163 indentation level */
164
e914d9bb 165PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 166
115ff745 167PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
907b3e23 168
115ff745 169PERLVARA(I, colors,6, char *) /* from regcomp.c */
907b3e23 170
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171/*
172=for apidoc Amn|peep_t|PL_peepp
173
174Pointer to the per-subroutine peephole optimiser. This is a function
175that gets called at the end of compilation of a Perl subroutine (or
176equivalently independent piece of Perl code) to perform fixups of
177some ops and to perform small-scale optimisations. The function is
178called once for each subroutine that is compiled, and is passed, as sole
179parameter, a pointer to the op that is the entry point to the subroutine.
180It modifies the op tree in place.
181
182The peephole optimiser should never be completely replaced. Rather,
183add code to it by wrapping the existing optimiser. The basic way to do
184this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
185If the new code wishes to operate on ops throughout the subroutine's
186structure, rather than just at the top level, it is likely to be more
187convenient to wrap the L</PL_rpeepp> hook.
188
189=cut
190*/
191
115ff745 192PERLVARI(I, peepp, peep_t, Perl_peep)
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193
194/*
195=for apidoc Amn|peep_t|PL_rpeepp
196
197Pointer to the recursive peephole optimiser. This is a function
198that gets called at the end of compilation of a Perl subroutine (or
199equivalently independent piece of Perl code) to perform fixups of some
200ops and to perform small-scale optimisations. The function is called
201once for each chain of ops linked through their C<op_next> fields;
202it is recursively called to handle each side chain. It is passed, as
203sole parameter, a pointer to the op that is at the head of the chain.
204It modifies the op tree in place.
205
206The peephole optimiser should never be completely replaced. Rather,
207add code to it by wrapping the existing optimiser. The basic way to do
208this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
209If the new code wishes to operate only on ops at a subroutine's top level,
210rather than throughout the structure, it is likely to be more convenient
211to wrap the L</PL_peepp> hook.
212
213=cut
214*/
215
115ff745 216PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 217
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218/*
219=for apidoc Amn|Perl_ophook_t|PL_opfreehook
220
221When 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.
222This allows extensions to free any extra attribute they have locally attached to an OP.
223It is also assured to first fire for the parent OP and then for its kids.
224
225When 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.
226
227=cut
228*/
229
115ff745 230PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 231
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232PERLVARI(I, watchaddr, char **, 0)
233PERLVAR(I, watchok, char *)
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234
235/* the currently active slab in a chain of slabs of regmatch states,
236 * and the currently active state within that slab */
237
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238PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
239PERLVAR(I, regmatch_state, regmatch_state *)
907b3e23 240
907b3e23 241/* Put anything new that is pointer aligned here. */
d95e864f 242
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243PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
244PERLVAR(I, localizing, U8) /* are we processing a local() list? */
245PERLVAR(I, colorset, bool) /* from regcomp.c */
246PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
247PERLVAR(I, tainted, bool) /* using variables controlled by $< */
248PERLVAR(I, tainting, bool) /* doing taint checks */
9ebf26ad 249
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250/* This value may be set when embedding for full cleanup */
251/* 0=none, 1=full, 2=full with checks */
801627e8 252/* mod_perl is special, and also assigns a meaning -1 */
115ff745 253PERLVARI(I, perl_destruct_level, signed char, 0)
d95e864f 254
30b0736d 255/* current phase the interpreter is in */
115ff745 256PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
30b0736d 257
115ff745 258PERLVAR(I, perldb, U32)
d95e864f 259
115ff745 260PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 261
49f531da 262/* pseudo environmental stuff */
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263PERLVAR(I, origargc, int)
264PERLVAR(I, origargv, char **)
265PERLVAR(I, envgv, GV *)
266PERLVAR(I, incgv, GV *)
267PERLVAR(I, hintgv, GV *)
268PERLVAR(I, origfilename, char *)
269PERLVAR(I, diehook, SV *)
270PERLVAR(I, warnhook, SV *)
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271
272/* switches */
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273PERLVAR(I, patchlevel, SV *)
274PERLVAR(I, apiversion, SV *)
275PERLVAR(I, localpatches, const char * const *)
276PERLVARI(I, splitstr, const char *, " ")
277
278PERLVAR(I, minus_c, bool)
279PERLVAR(I, minus_n, bool)
280PERLVAR(I, minus_p, bool)
281PERLVAR(I, minus_l, bool)
282PERLVAR(I, minus_a, bool)
283PERLVAR(I, minus_F, bool)
284PERLVAR(I, doswitches, bool)
285PERLVAR(I, minus_E, bool)
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286
287/*
ccfc67b7 288
2eb25c99 289=for apidoc mn|bool|PL_dowarn
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290
291The C variable which corresponds to Perl's $^W warning variable.
292
293=cut
294*/
295
115ff745 296PERLVAR(I, dowarn, U8)
1a904fc8 297#ifdef PERL_SAWAMPERSAND
d3b97530 298PERLVAR(I, sawampersand, U8) /* must save all match strings */
1a904fc8 299#endif
115ff745 300PERLVAR(I, unsafe, bool)
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301
302/* Space for U16 (or U8 if PERL_SAWAMPERSAND is defined) */
303
304PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
e6b4660c 305
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306PERLVAR(I, inplace, char *)
307PERLVAR(I, e_script, SV *)
49f531da 308
115ff745 309PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 310
115ff745 311PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 312 /* top fd to pass to subprocesses */
115ff745 313PERLVAR(I, statusvalue, I32) /* $? */
49f531da 314#ifdef VMS
115ff745 315PERLVAR(I, statusvalue_vms, U32)
e5218da5 316#else
115ff745 317PERLVAR(I, statusvalue_posix, I32)
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318#endif
319
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320PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
321PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 322
49f531da 323/* shortcuts to various I/O objects */
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324PERLVAR(I, stdingv, GV *) /* *STDIN */
325PERLVAR(I, stderrgv, GV *) /* *STDERR */
326PERLVAR(I, defgv, GV *)
327PERLVAR(I, argvgv, GV *) /* *ARGV */
328PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
329PERLVAR(I, argvout_stack, AV *)
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330
331/* shortcuts to regexp stuff */
115ff745 332PERLVAR(I, replgv, GV *) /* *^R */
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333
334/* shortcuts to misc objects */
115ff745 335PERLVAR(I, errgv, GV *) /* *@ */
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336
337/* shortcuts to debugging objects */
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338PERLVAR(I, DBgv, GV *) /* *DB::DB */
339PERLVAR(I, DBline, GV *) /* *DB::line */
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340
341/*
2eb25c99 342=for apidoc mn|GV *|PL_DBsub
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343When Perl is run in debugging mode, with the B<-d> switch, this GV contains
344the SV which holds the name of the sub being debugged. This is the C
345variable which corresponds to Perl's $DB::sub variable. See
346C<PL_DBsingle>.
347
2eb25c99 348=for apidoc mn|SV *|PL_DBsingle
954c1994 349When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 350boolean which indicates whether subs are being single-stepped.
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351Single-stepping is automatically turned on after every step. This is the C
352variable which corresponds to Perl's $DB::single variable. See
353C<PL_DBsub>.
354
2eb25c99 355=for apidoc mn|SV *|PL_DBtrace
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356Trace variable used when Perl is run in debugging mode, with the B<-d>
357switch. This is the C variable which corresponds to Perl's $DB::trace
358variable. See C<PL_DBsingle>.
359
360=cut
361*/
362
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363PERLVAR(I, DBsub, GV *) /* *DB::sub */
364PERLVAR(I, DBsingle, SV *) /* $DB::single */
365PERLVAR(I, DBtrace, SV *) /* $DB::trace */
366PERLVAR(I, DBsignal, SV *) /* $DB::signal */
367PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
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368
369/* symbol tables */
115ff745
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370PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
371PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
372PERLVAR(I, curstname, SV *) /* name of current package */
373PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
374PERLVAR(I, endav, AV *) /* names of END subroutines */
375PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
376PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
377PERLVAR(I, initav, AV *) /* names of INIT subroutines */
378PERLVAR(I, strtab, HV *) /* shared string table */
379PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
49f531da 380
9f7da6d5 381/* funky return mechanisms */
115ff745 382PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
9f7da6d5 383
49f531da 384/* memory management */
2d8edfd1 385PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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386PERLVAR(I, sv_objcount, IV) /* DEPRECATED AND UNMAINTAINED.
387 * Will be removed in Perl 5.20.
388 * Used to be: how many objects are currently allocated. */
115ff745
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389PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
390PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
49f531da 391
49f531da 392/* subprocess state */
115ff745 393PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
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394
395/* internal state */
115ff745 396PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 397
49f531da 398/* current interpreter roots */
115ff745
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399PERLVAR(I, main_cv, CV *)
400PERLVAR(I, main_root, OP *)
401PERLVAR(I, main_start, OP *)
402PERLVAR(I, eval_root, OP *)
403PERLVAR(I, eval_start, OP *)
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404
405/* runtime control stuff */
115ff745 406PERLVARI(I, curcopdb, COP *, NULL)
49f531da 407
115ff745
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408PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
409PERLVAR(I, lastfd, int) /* what to preserve mode on */
410PERLVAR(I, oldname, char *) /* what to preserve mode on */
411PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
412PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
00accf8d
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413/* Elements in this array have ';' appended and are injected as a single line
414 into the tokeniser. You can't put any (literal) newlines into any program
415 you stuff in into this array, as the point where it's injected is expecting
416 a single physical line. */
115ff745
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417PERLVAR(I, preambleav, AV *)
418PERLVAR(I, mess_sv, SV *)
419PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
71eebe1e 420/* statics moved here for shared library purposes */
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421PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
422PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
423PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
424PERLVARI(I, laststype, U16, OP_STAT)
425PERLVARI(I, laststatval, int, -1)
d4cce5f1 426
4b556e6c 427/* interpreter atexit processing */
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428PERLVARI(I, exitlistlen, I32, 0) /* length of same */
429PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 430 /* list of exit functions */
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431
432/*
433=for apidoc Amn|HV*|PL_modglobal
434
7889fe52 435C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 436extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
437In a pinch, it can also be used as a symbol table for extensions
438to share data among each other. It is a good idea to use keys
954c1994
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439prefixed by the package name of the extension that owns the data.
440
441=cut
442*/
443
115ff745 444PERLVAR(I, modglobal, HV *) /* per-interp module data */
cb68f92d
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445
446/* these used to be in global before 5.004_68 */
115ff745 447PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 448
115ff745 449PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 450
115ff745 451PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb
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452PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
453PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
115ff745
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454PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
455PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
4b556e6c
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456
457#ifdef HAVE_INTERP_INTERN
115ff745 458PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 459 /* platform internals */
4b556e6c
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460#endif
461
7fae4e64 462/* more statics moved here */
115ff745
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463PERLVAR(I, DBcv, CV *) /* from perl.c */
464PERLVARI(I, generation, int, 100) /* from op.c */
56953603 465
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466PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
467PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
468PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
469PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 470
985213f2
AB
471PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
472PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
473PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
474PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 475PERLVARI(I, an, U32, 0) /* malloc sequence number */
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476
477#ifdef DEBUGGING
478 /* exercise wrap-around */
479 #define PERL_COP_SEQMAX (U32_MAX-50)
480#else
481 #define PERL_COP_SEQMAX 0
482#endif
115ff745 483PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
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484#undef PERL_COP_SEQMAX
485
115ff745
NC
486PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
487PERLVAR(I, origalen, U32)
488PERLVAR(I, origenviron, char **)
ca0c25f6 489#ifdef PERL_USES_PL_PIDSTATUS
115ff745 490PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 491#endif
115ff745 492PERLVAR(I, osname, char *) /* operating system */
5c728af0 493
115ff745 494PERLVAR(I, sighandlerp, Sighandler_t)
0672f40e 495
115ff745 496PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 497
115ff745 498PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
0672f40e 499
115ff745 500PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
9f7da6d5 501
115ff745 502PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 503
954c1994
GS
504/*
505=for apidoc Amn|SV|PL_sv_undef
506This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
507
508=for apidoc Amn|SV|PL_sv_no
509This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
510C<&PL_sv_no>.
511
512=for apidoc Amn|SV|PL_sv_yes
513This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
514C<&PL_sv_yes>.
515
516=cut
517*/
518
115ff745
NC
519PERLVAR(I, sv_undef, SV)
520PERLVAR(I, sv_no, SV)
521PERLVAR(I, sv_yes, SV)
0672f40e 522
115ff745 523PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 524
115ff745
NC
525PERLVAR(I, subline, I32) /* line this subroutine began on */
526PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
d95e864f 527
115ff745
NC
528PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
529PERLVAR(I, padix, I32) /* max used index in current "register" pad */
d95e864f 530
115ff745 531PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
0672f40e 532
115ff745 533PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
0672f40e 534
115ff745 535PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
0672f40e 536
f0cb02e3 537/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
115ff745 538PERLVARI(I, breakable_sub_gen, U32, 0)
f0cb02e3 539
0672f40e 540#ifdef USE_LOCALE_COLLATE
115ff745
NC
541PERLVAR(I, collation_name, char *) /* Name of current collation */
542PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
543PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
544PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
545PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 546 /* Assume simple collation */
0672f40e
GS
547#endif /* USE_LOCALE_COLLATE */
548
9f7da6d5 549
edd11d75 550#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
95ca8690 551# define PERL___I -1
9f7da6d5 552#else
7cd91da4 553# define PERL___I 1
9f7da6d5 554#endif
115ff745 555PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
95ca8690
DM
556#undef PERL___I
557
9f7da6d5 558
0672f40e
GS
559#ifdef USE_LOCALE_NUMERIC
560
115ff745 561PERLVARI(I, numeric_standard, bool, TRUE)
0672f40e 562 /* Assume simple numerics */
115ff745 563PERLVARI(I, numeric_local, bool, TRUE)
0672f40e 564 /* Assume local numerics */
115ff745
NC
565PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
566PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 567
0672f40e
GS
568#endif /* !USE_LOCALE_NUMERIC */
569
a3e1f3a6
KW
570/* Unicode inversion lists */
571PERLVAR(I, ASCII, SV *)
572PERLVAR(I, Latin1, SV *)
573PERLVAR(I, AboveLatin1, SV *)
574
26faadbd 575PERLVAR(I, NonL1NonFinalFold, SV *)
9d53c457 576PERLVAR(I, HasMultiCharFold, SV *)
26faadbd 577
a3e1f3a6 578/* utf8 character class swashes */
115ff745 579PERLVAR(I, utf8_mark, SV *)
27d4fc33 580PERLVAR(I, utf8_X_regular_begin, SV *)
115ff745 581PERLVAR(I, utf8_X_extend, SV *)
115ff745
NC
582PERLVAR(I, utf8_toupper, SV *)
583PERLVAR(I, utf8_totitle, SV *)
584PERLVAR(I, utf8_tolower, SV *)
585PERLVAR(I, utf8_tofold, SV *)
bde9e88d
KW
586PERLVAR(I, utf8_charname_begin, SV *)
587PERLVAR(I, utf8_charname_continue, SV *)
30f9bdb0 588
63c61c3f 589PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
30f9bdb0 590PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
86f72d56 591PERLVARA(I, L1Posix_ptrs, POSIX_CC_COUNT, SV *)
cac6e0ca
KW
592PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
593
115ff745
NC
594PERLVAR(I, last_swash_hv, HV *)
595PERLVAR(I, last_swash_tmps, U8 *)
596PERLVAR(I, last_swash_slen, STRLEN)
6c2f1a55 597PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
45d91b83 598PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
d95e864f
NC
599
600#ifdef FCRYPT
115ff745 601PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
d95e864f
NC
602#endif
603
115ff745 604PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
e6b4660c
NC
605PERLVAR(I, srand_called, bool)
606PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
0672f40e 607
115ff745 608PERLVAR(I, parser, yy_parser *) /* current parser state */
12fbd33b 609
c4a30c8c
NC
610/* Array of signal handlers, indexed by signal number, through which the C
611 signal handler dispatches. */
115ff745 612PERLVAR(I, psig_ptr, SV **)
c4a30c8c 613/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
614 argument to a signal handler. Only one block of memory is allocated for
615 both psig_name and psig_ptr. */
115ff745 616PERLVAR(I, psig_name, SV **)
1d7c1841 617
c5be433b 618#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
619PERLVAR(I, Mem, struct IPerlMem *)
620PERLVAR(I, MemShared, struct IPerlMem *)
621PERLVAR(I, MemParse, struct IPerlMem *)
622PERLVAR(I, Env, struct IPerlEnv *)
623PERLVAR(I, StdIO, struct IPerlStdIO *)
624PERLVAR(I, LIO, struct IPerlLIO *)
625PERLVAR(I, Dir, struct IPerlDir *)
626PERLVAR(I, Sock, struct IPerlSock *)
627PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 628#endif
1d7c1841 629
115ff745
NC
630PERLVAR(I, ptr_table, PTR_TBL_t *)
631PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 632
115ff745 633PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 634
d95e864f 635
1fcf4c12 636#if defined(USE_ITHREADS)
115ff745 637PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 638 regex_padav */
115ff745 639PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 640 values in op_pmoffset of pmop.
402d2eb1
NC
641 Entry 0 is an SV whose PV is a
642 "packed" list of IVs listing
e6853197 643 the now-free slots in the array */
d4d03940
FC
644PERLVAR(I, stashpad, HV **) /* for CopSTASH */
645PERLVARI(I, stashpadmax, PADOFFSET, 64)
646PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
647#endif
648
ea68fd67 649#ifdef USE_REENTRANT_API
115ff745 650PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
651#endif
652
115ff745
NC
653PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
654PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 655
a1ea730d 656#ifdef PERLIO_LAYERS
115ff745
NC
657PERLVARI(I, perlio, PerlIOl *, NULL)
658PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
659PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
660#endif
661
115ff745 662PERLVARI(I, encoding, SV *, NULL) /* character encoding */
0a378802 663
115ff745 664PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
ce333219 665
115ff745
NC
666PERLVAR(I, utf8_idstart, SV *)
667PERLVAR(I, utf8_idcont, SV *)
668PERLVAR(I, utf8_xidstart, SV *)
b6912c02 669PERLVAR(I, utf8_perl_idstart, SV *)
eba68aa0 670PERLVAR(I, utf8_perl_idcont, SV *)
115ff745 671PERLVAR(I, utf8_xidcont, SV *)
82686b01 672
115ff745 673PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
147f47de 674
115ff745
NC
675PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
676PERLVARI(I, unitcheckav_save, AV *, NULL)
677 /* save UNITCHECK{}s when compiling */
ece599bd 678
115ff745 679PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 680
115ff745 681PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
9f7da6d5 682
15a5279a 683/* Hooks to shared SVs and locks. */
115ff745
NC
684PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
685PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
d0647d4e
NC
686#ifdef NO_MATHOMS
687# define PERL_UNLOCK_HOOK Perl_sv_nosharing
688#else
689/* This reference ensures that the mathoms are linked with perl */
690# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
691#endif
115ff745 692PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 693
115ff745 694PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 695
9e08d3a4 696/* Can shared object be destroyed */
115ff745 697PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 698
01d65469 699#ifndef PERL_MICRO
115ff745 700PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 701#endif
92f022bb 702
115ff745 703PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 704
9e08d3a4
NC
705/* Register of known Method Resolution Orders.
706 What this actually points to is an implementation detail (it may change to
707 a structure incorporating a reference count - use mro_get_from_name to
708 retrieve a C<struct mro_alg *> */
115ff745 709PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
710
711/* Compile-time block start/end hooks */
115ff745 712PERLVAR(I, blockhooks, AV *)
9e08d3a4
NC
713
714/* Everything that folds to a given character, for case insensitivity regex
715 * matching */
115ff745 716PERLVARI(I, utf8_foldclosures, HV *, NULL)
9e08d3a4
NC
717
718/* List of characters that participate in folds (except marks, etc in
719 * multi-char folds) */
115ff745 720PERLVARI(I, utf8_foldable, SV *, NULL)
9e08d3a4 721
115ff745 722PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 723
d67594ff
FC
724/* Hook for File::Glob */
725PERLVARI(I, globhook, globhook_t, NULL)
726
d399cf59 727/* The last unconditional member of the interpreter structure when 5.18.0 was
ffee3ff6
NC
728 released. The offset of the end of this is baked into a global variable in
729 any shared perl library which will allow a sanity test in future perl
730 releases. */
d399cf59 731#define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
ffee3ff6 732
f16dd614 733#ifdef PERL_IMPLICIT_CONTEXT
115ff745 734PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 735PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
ba6d381e 736# ifdef PERL_GLOBAL_STRUCT_PRIVATE
115ff745 737PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
ba6d381e 738# endif
f16dd614
DM
739#endif
740
7cb608b5
NC
741#ifdef PERL_TRACK_MEMPOOL
742/* For use with the memory debugging code in util.c */
115ff745 743PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
7cb608b5
NC
744#endif
745
ba6d381e
NC
746#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
747/* File descriptor to talk to the child which dumps scalars. */
115ff745 748PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
749#endif
750
ba6d381e 751#ifdef PERL_MAD
115ff745 752PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
ba6d381e 753 /* (MAD = Misc Attribute Decoration) */
115ff745 754PERLVARI(I, xmlfp, PerlIO *, NULL)
ba6d381e
NC
755#endif
756
d7a2c63c 757#ifdef DEBUG_LEAKING_SCALARS
115ff745 758PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
759#endif
760
157b3822
NC
761/* If you are adding a U8 or U16, check to see if there are 'Space' comments
762 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
763
764/* Within a stable branch, new variables must be added to the very end, before
765 * this comment, for binary compatibility (the offsets of the old members must
766 * not change).
b83cd129 767 * (Don't forget to add your variable also to perl_clone()!)
e3acbfda 768 * XSUB.h provides wrapper functions via perlapi.h that make this
b83cd129
JH
769 * irrelevant, but not all code may be expected to #include XSUB.h.
770 */