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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
11/*
12=head1 Per-Interpreter Variables
13*/
49f531da 14
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15/* These variables are per-interpreter in threaded/multiplicity builds,
16 * global otherwise.
17
d7cb65f2 18 * Don't forget to re-run regen/embed.pl to propagate changes! */
cb68f92d 19
ab686ae8 20/* New variables must be added to the very end for binary compatibility. */
6537fe72 21
ba05a734 22/* Don't forget to add your variable also to perl_clone()! (in sv.c) */
02506efe 23
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24/* The 'I' prefix is only needed for vars that need appropriate #defines
25 * generated when built with or without MULTIPLICITY. It is also used
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26 * to generate the appropriate export list for win32. If the variable
27 * needs to be initialized, use PERLVARI.
cb68f92d 28 *
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29 * When building without MULTIPLICITY, these variables will be truly global.
30 *
31 * Important ones in the first cache line (if alignment is done right) */
32
115ff745 33PERLVAR(I, stack_sp, SV **) /* top of the stack */
907b3e23 34#ifdef OP_IN_REGISTER
115ff745 35PERLVAR(I, opsave, OP *)
907b3e23 36#else
115ff745 37PERLVAR(I, op, OP *) /* currently executing op */
907b3e23 38#endif
115ff745 39PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
907b3e23 40
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41PERLVAR(I, stack_base, SV **)
42PERLVAR(I, stack_max, SV **)
907b3e23 43
115ff745 44PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
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45/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
46 present always, as -DDEUBGGING must be binary compatible with non. */
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47PERLVARI(I, scopestack_name, const char * *, NULL)
48PERLVAR(I, scopestack_ix, I32)
49PERLVAR(I, scopestack_max, I32)
907b3e23 50
115ff745 51PERLVAR(I, savestack, ANY *) /* items that need to be restored when
907b3e23 52 LEAVEing scopes we've ENTERed */
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53PERLVAR(I, savestack_ix, I32)
54PERLVAR(I, savestack_max, I32)
55
56PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
57PERLVARI(I, tmps_ix, I32, -1)
58PERLVARI(I, tmps_floor, I32, -1)
59PERLVAR(I, tmps_max, I32)
60PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
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61 assignment? */
62
115ff745 63PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
907b3e23 64 remembering */
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65PERLVAR(I, markstack_ptr, I32 *)
66PERLVAR(I, markstack_max, I32 *)
907b3e23 67
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68PERLVAR(I, Sv, SV *) /* used to hold temporary values */
69PERLVAR(I, Xpv, XPV *) /* used to hold temporary values */
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70
71/*
72=for apidoc Amn|STRLEN|PL_na
73
74A convenience variable which is typically used with C<SvPV> when one
75doesn't care about the length of the string. It is usually more efficient
76to either declare a local variable and use that instead or to use the
77C<SvPV_nolen> macro.
78
79=cut
80*/
81
115ff745 82PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
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83 Not Applicable */
84
85/* stat stuff */
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86PERLVAR(I, statbuf, Stat_t)
87PERLVAR(I, statcache, Stat_t) /* _ */
88PERLVAR(I, statgv, GV *)
89PERLVARI(I, statname, SV *, NULL)
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90
91#ifdef HAS_TIMES
115ff745 92PERLVAR(I, timesbuf, struct tms)
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93#endif
94
95/* Fields used by magic variables such as $@, $/ and so on */
115ff745 96PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
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97
98/*
99=for apidoc mn|SV*|PL_rs
100
101The input record separator - C<$/> in Perl space.
102
103=for apidoc mn|GV*|PL_last_in_gv
104
105The GV which was last used for a filehandle input operation. (C<< <FH> >>)
106
e23d9e2f 107=for apidoc mn|GV*|PL_ofsgv
907b3e23 108
e23d9e2f 109The glob containing the output field separator - C<*,> in Perl space.
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110
111=cut
112*/
113
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114PERLVAR(I, rs, SV *) /* input record separator $/ */
115PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
116PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
117PERLVAR(I, defoutgv, GV *) /* default FH for output */
118PERLVARI(I, chopset, const char *, " \n-") /* $: */
119PERLVAR(I, formtarget, SV *)
120PERLVAR(I, bodytarget, SV *)
121PERLVAR(I, toptarget, SV *)
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122
123/* Stashes */
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124PERLVAR(I, defstash, HV *) /* main symbol table */
125PERLVAR(I, curstash, HV *) /* symbol table for current package */
126
127PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
128PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
129PERLVAR(I, curcop, COP *)
130PERLVAR(I, curstack, AV *) /* THE STACK */
131PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
132PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
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133 happening */
134
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135PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
136PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
137PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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138
139/* statics "owned" by various functions */
115ff745 140PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 141
115ff745 142PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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143
144/* sort stuff */
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145PERLVAR(I, sortcop, OP *) /* user defined sort routine */
146PERLVAR(I, sortstash, HV *) /* which is in some package or other */
147PERLVAR(I, firstgv, GV *) /* $a */
148PERLVAR(I, secondgv, GV *) /* $b */
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149
150/* float buffer */
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151PERLVAR(I, efloatbuf, char *)
152PERLVAR(I, efloatsize, STRLEN)
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153
154/* regex stuff */
155
115ff745 156PERLVAR(I, reg_state, struct re_save_state)
907b3e23 157
115ff745 158PERLVAR(I, regdummy, regnode) /* from regcomp.c */
907b3e23 159
115ff745 160PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
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161 indentation level */
162
157b3822 163
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164PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
165PERLVARI(I, rehash_seed_set, bool, FALSE) /* 582 hash initialized? */
907b3e23 166
115ff745 167PERLVARA(I, colors,6, char *) /* from regcomp.c */
907b3e23 168
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169/*
170=for apidoc Amn|peep_t|PL_peepp
171
172Pointer to the per-subroutine peephole optimiser. This is a function
173that gets called at the end of compilation of a Perl subroutine (or
174equivalently independent piece of Perl code) to perform fixups of
175some ops and to perform small-scale optimisations. The function is
176called once for each subroutine that is compiled, and is passed, as sole
177parameter, a pointer to the op that is the entry point to the subroutine.
178It modifies the op tree in place.
179
180The peephole optimiser should never be completely replaced. Rather,
181add code to it by wrapping the existing optimiser. The basic way to do
182this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
183If the new code wishes to operate on ops throughout the subroutine's
184structure, rather than just at the top level, it is likely to be more
185convenient to wrap the L</PL_rpeepp> hook.
186
187=cut
188*/
189
115ff745 190PERLVARI(I, peepp, peep_t, Perl_peep)
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191
192/*
193=for apidoc Amn|peep_t|PL_rpeepp
194
195Pointer to the recursive peephole optimiser. This is a function
196that gets called at the end of compilation of a Perl subroutine (or
197equivalently independent piece of Perl code) to perform fixups of some
198ops and to perform small-scale optimisations. The function is called
199once for each chain of ops linked through their C<op_next> fields;
200it is recursively called to handle each side chain. It is passed, as
201sole parameter, a pointer to the op that is at the head of the chain.
202It modifies the op tree in place.
203
204The peephole optimiser should never be completely replaced. Rather,
205add code to it by wrapping the existing optimiser. The basic way to do
206this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
207If the new code wishes to operate only on ops at a subroutine's top level,
208rather than throughout the structure, it is likely to be more convenient
209to wrap the L</PL_peepp> hook.
210
211=cut
212*/
213
115ff745 214PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 215
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216/*
217=for apidoc Amn|Perl_ophook_t|PL_opfreehook
218
219When 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.
220This allows extensions to free any extra attribute they have locally attached to an OP.
221It is also assured to first fire for the parent OP and then for its kids.
222
223When 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.
224
225=cut
226*/
227
115ff745 228PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 229
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230PERLVARI(I, watchaddr, char **, 0)
231PERLVAR(I, watchok, char *)
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232
233/* the currently active slab in a chain of slabs of regmatch states,
234 * and the currently active state within that slab */
235
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236PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
237PERLVAR(I, regmatch_state, regmatch_state *)
907b3e23 238
907b3e23 239/* Put anything new that is pointer aligned here. */
d95e864f 240
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241PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
242PERLVAR(I, localizing, U8) /* are we processing a local() list? */
243PERLVAR(I, colorset, bool) /* from regcomp.c */
244PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
245PERLVAR(I, tainted, bool) /* using variables controlled by $< */
246PERLVAR(I, tainting, bool) /* doing taint checks */
9ebf26ad 247
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248/* This value may be set when embedding for full cleanup */
249/* 0=none, 1=full, 2=full with checks */
801627e8 250/* mod_perl is special, and also assigns a meaning -1 */
115ff745 251PERLVARI(I, perl_destruct_level, signed char, 0)
d95e864f 252
30b0736d 253/* current phase the interpreter is in */
115ff745 254PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
30b0736d 255
115ff745 256PERLVAR(I, perldb, U32)
d95e864f 257
115ff745 258PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 259
49f531da 260/* pseudo environmental stuff */
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261PERLVAR(I, origargc, int)
262PERLVAR(I, origargv, char **)
263PERLVAR(I, envgv, GV *)
264PERLVAR(I, incgv, GV *)
265PERLVAR(I, hintgv, GV *)
266PERLVAR(I, origfilename, char *)
267PERLVAR(I, diehook, SV *)
268PERLVAR(I, warnhook, SV *)
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269
270/* switches */
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271PERLVAR(I, patchlevel, SV *)
272PERLVAR(I, apiversion, SV *)
273PERLVAR(I, localpatches, const char * const *)
274PERLVARI(I, splitstr, const char *, " ")
275
276PERLVAR(I, minus_c, bool)
277PERLVAR(I, minus_n, bool)
278PERLVAR(I, minus_p, bool)
279PERLVAR(I, minus_l, bool)
280PERLVAR(I, minus_a, bool)
281PERLVAR(I, minus_F, bool)
282PERLVAR(I, doswitches, bool)
283PERLVAR(I, minus_E, bool)
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284
285/*
ccfc67b7 286
2eb25c99 287=for apidoc mn|bool|PL_dowarn
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288
289The C variable which corresponds to Perl's $^W warning variable.
290
291=cut
292*/
293
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294PERLVAR(I, dowarn, U8)
295PERLVAR(I, sawampersand, bool) /* must save all match strings */
296PERLVAR(I, unsafe, bool)
297PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
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298
299PERLVARI(I, reginterp_cnt, I32, 0) /* Whether "Regexp" was interpolated. */
300
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301PERLVAR(I, inplace, char *)
302PERLVAR(I, e_script, SV *)
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303
304/* magical thingies */
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305PERLVAR(I, basetime, Time_t) /* $^T */
306PERLVAR(I, formfeed, SV *) /* $^L */
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307
308
115ff745 309PERLVARI(I, maxsysfd, I32, MAXSYSFD)
cb68f92d 310 /* top fd to pass to subprocesses */
115ff745 311PERLVAR(I, statusvalue, I32) /* $? */
49f531da 312#ifdef VMS
115ff745 313PERLVAR(I, statusvalue_vms, U32)
e5218da5 314#else
115ff745 315PERLVAR(I, statusvalue_posix, I32)
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316#endif
317
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318PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
319PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 320
49f531da 321/* shortcuts to various I/O objects */
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322PERLVAR(I, stdingv, GV *) /* *STDIN */
323PERLVAR(I, stderrgv, GV *) /* *STDERR */
324PERLVAR(I, defgv, GV *)
325PERLVAR(I, argvgv, GV *) /* *ARGV */
326PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
327PERLVAR(I, argvout_stack, AV *)
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328
329/* shortcuts to regexp stuff */
115ff745 330PERLVAR(I, replgv, GV *) /* *^R */
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331
332/* shortcuts to misc objects */
115ff745 333PERLVAR(I, errgv, GV *) /* *@ */
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334
335/* shortcuts to debugging objects */
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336PERLVAR(I, DBgv, GV *) /* *DB::DB */
337PERLVAR(I, DBline, GV *) /* *DB::line */
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338
339/*
2eb25c99 340=for apidoc mn|GV *|PL_DBsub
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341When Perl is run in debugging mode, with the B<-d> switch, this GV contains
342the SV which holds the name of the sub being debugged. This is the C
343variable which corresponds to Perl's $DB::sub variable. See
344C<PL_DBsingle>.
345
2eb25c99 346=for apidoc mn|SV *|PL_DBsingle
954c1994 347When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 348boolean which indicates whether subs are being single-stepped.
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349Single-stepping is automatically turned on after every step. This is the C
350variable which corresponds to Perl's $DB::single variable. See
351C<PL_DBsub>.
352
2eb25c99 353=for apidoc mn|SV *|PL_DBtrace
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354Trace variable used when Perl is run in debugging mode, with the B<-d>
355switch. This is the C variable which corresponds to Perl's $DB::trace
356variable. See C<PL_DBsingle>.
357
358=cut
359*/
360
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361PERLVAR(I, DBsub, GV *) /* *DB::sub */
362PERLVAR(I, DBsingle, SV *) /* $DB::single */
363PERLVAR(I, DBtrace, SV *) /* $DB::trace */
364PERLVAR(I, DBsignal, SV *) /* $DB::signal */
365PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
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366
367/* symbol tables */
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368PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
369PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
370PERLVAR(I, curstname, SV *) /* name of current package */
371PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
372PERLVAR(I, endav, AV *) /* names of END subroutines */
373PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
374PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
375PERLVAR(I, initav, AV *) /* names of INIT subroutines */
376PERLVAR(I, strtab, HV *) /* shared string table */
377PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
49f531da 378
9f7da6d5 379/* funky return mechanisms */
115ff745 380PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
9f7da6d5 381
49f531da 382/* memory management */
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383PERLVAR(I, sv_count, I32) /* how many SV* are currently allocated */
384PERLVAR(I, sv_objcount, I32) /* how many objects are currently allocated */
385PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
386PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
49f531da 387
49f531da 388/* subprocess state */
115ff745 389PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
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390
391/* internal state */
115ff745 392PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 393
49f531da 394/* current interpreter roots */
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395PERLVAR(I, main_cv, CV *)
396PERLVAR(I, main_root, OP *)
397PERLVAR(I, main_start, OP *)
398PERLVAR(I, eval_root, OP *)
399PERLVAR(I, eval_start, OP *)
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400
401/* runtime control stuff */
115ff745 402PERLVARI(I, curcopdb, COP *, NULL)
49f531da 403
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404PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
405PERLVAR(I, lastfd, int) /* what to preserve mode on */
406PERLVAR(I, oldname, char *) /* what to preserve mode on */
407PERLVAR(I, Argv, const char **) /* stuff to free from do_aexec, vfork safe */
408PERLVAR(I, Cmd, char *) /* stuff to free from do_aexec, vfork safe */
00accf8d
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409/* Elements in this array have ';' appended and are injected as a single line
410 into the tokeniser. You can't put any (literal) newlines into any program
411 you stuff in into this array, as the point where it's injected is expecting
412 a single physical line. */
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413PERLVAR(I, preambleav, AV *)
414PERLVAR(I, mess_sv, SV *)
415PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
71eebe1e 416/* statics moved here for shared library purposes */
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417PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
418PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
419PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
420PERLVARI(I, laststype, U16, OP_STAT)
421PERLVARI(I, laststatval, int, -1)
d4cce5f1 422
4b556e6c 423/* interpreter atexit processing */
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424PERLVARI(I, exitlistlen, I32, 0) /* length of same */
425PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
cb68f92d 426 /* list of exit functions */
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427
428/*
429=for apidoc Amn|HV*|PL_modglobal
430
7889fe52 431C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 432extensions that need to keep information on a per-interpreter basis.
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433In a pinch, it can also be used as a symbol table for extensions
434to share data among each other. It is a good idea to use keys
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435prefixed by the package name of the extension that owns the data.
436
437=cut
438*/
439
115ff745 440PERLVAR(I, modglobal, HV *) /* per-interp module data */
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441
442/* these used to be in global before 5.004_68 */
115ff745 443PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 444
115ff745 445PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 446
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447PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
448PERLVAR(I, comppad, AV *) /* storage for lexically scoped temporaries */
449PERLVAR(I, comppad_name, AV *) /* variable names for "my" variables */
450PERLVAR(I, comppad_name_fill, I32) /* last "introduced" variable offset */
451PERLVAR(I, comppad_name_floor, I32) /* start of vars in innermost block */
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452
453#ifdef HAVE_INTERP_INTERN
115ff745 454PERLVAR(I, sys_intern, struct interp_intern)
cb68f92d 455 /* platform internals */
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456#endif
457
7fae4e64 458/* more statics moved here */
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459PERLVAR(I, DBcv, CV *) /* from perl.c */
460PERLVARI(I, generation, int, 100) /* from op.c */
56953603 461
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462PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
463PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
464PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
465PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 466
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467PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
468PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
469PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
470PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 471PERLVARI(I, an, U32, 0) /* malloc sequence number */
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472
473#ifdef DEBUGGING
474 /* exercise wrap-around */
475 #define PERL_COP_SEQMAX (U32_MAX-50)
476#else
477 #define PERL_COP_SEQMAX 0
478#endif
115ff745 479PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
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480#undef PERL_COP_SEQMAX
481
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482PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
483PERLVAR(I, origalen, U32)
484PERLVAR(I, origenviron, char **)
ca0c25f6 485#ifdef PERL_USES_PL_PIDSTATUS
115ff745 486PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 487#endif
115ff745 488PERLVAR(I, osname, char *) /* operating system */
5c728af0 489
115ff745 490PERLVAR(I, sighandlerp, Sighandler_t)
0672f40e 491
115ff745 492PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 493
115ff745 494PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
0672f40e 495
115ff745 496PERLVARI(I, maxo, int, MAXO) /* maximum number of ops */
9f7da6d5 497
115ff745 498PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 499
954c1994
GS
500/*
501=for apidoc Amn|SV|PL_sv_undef
502This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
503
504=for apidoc Amn|SV|PL_sv_no
505This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
506C<&PL_sv_no>.
507
508=for apidoc Amn|SV|PL_sv_yes
509This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
510C<&PL_sv_yes>.
511
512=cut
513*/
514
115ff745
NC
515PERLVAR(I, sv_undef, SV)
516PERLVAR(I, sv_no, SV)
517PERLVAR(I, sv_yes, SV)
0672f40e 518
115ff745 519PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 520
115ff745
NC
521PERLVAR(I, subline, I32) /* line this subroutine began on */
522PERLVAR(I, min_intro_pending, I32) /* start of vars to introduce */
d95e864f 523
115ff745
NC
524PERLVAR(I, max_intro_pending, I32) /* end of vars to introduce */
525PERLVAR(I, padix, I32) /* max used index in current "register" pad */
d95e864f 526
115ff745 527PERLVAR(I, padix_floor, I32) /* how low may inner block reset padix */
0672f40e 528
115ff745 529PERLVAR(I, hints, U32) /* pragma-tic compile-time flags */
0672f40e 530
115ff745 531PERLVAR(I, debug, VOL U32) /* flags given to -D switch */
0672f40e 532
f0cb02e3 533/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
115ff745 534PERLVARI(I, breakable_sub_gen, U32, 0)
f0cb02e3 535
115ff745 536PERLVARI(I, amagic_generation, long, 0)
0672f40e
GS
537
538#ifdef USE_LOCALE_COLLATE
115ff745
NC
539PERLVAR(I, collation_name, char *) /* Name of current collation */
540PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
541PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
542PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
543PERLVARI(I, collation_standard, bool, TRUE)
9f7da6d5 544 /* Assume simple collation */
0672f40e
GS
545#endif /* USE_LOCALE_COLLATE */
546
9f7da6d5 547
edd11d75 548#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
95ca8690 549# define PERL___I -1
9f7da6d5 550#else
7cd91da4 551# define PERL___I 1
9f7da6d5 552#endif
115ff745 553PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
95ca8690
DM
554#undef PERL___I
555
9f7da6d5 556
0672f40e
GS
557#ifdef USE_LOCALE_NUMERIC
558
115ff745 559PERLVARI(I, numeric_standard, bool, TRUE)
0672f40e 560 /* Assume simple numerics */
115ff745 561PERLVARI(I, numeric_local, bool, TRUE)
0672f40e 562 /* Assume local numerics */
115ff745
NC
563PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
564PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 565
0672f40e
GS
566#endif /* !USE_LOCALE_NUMERIC */
567
a3e1f3a6
KW
568/* Unicode inversion lists */
569PERLVAR(I, ASCII, SV *)
570PERLVAR(I, Latin1, SV *)
571PERLVAR(I, AboveLatin1, SV *)
572
3f427fd9
KW
573PERLVAR(I, PerlSpace, SV *)
574PERLVAR(I, XPerlSpace, SV *)
575
576PERLVAR(I, L1PosixAlnum,SV *)
577PERLVAR(I, PosixAlnum, SV *)
578
579PERLVAR(I, L1PosixAlpha,SV *)
580PERLVAR(I, PosixAlpha, SV *)
581
582PERLVAR(I, PosixBlank, SV *)
583PERLVAR(I, XPosixBlank, SV *)
584
dab0c3e7
KW
585PERLVAR(I, L1Cased, SV *)
586
3f427fd9
KW
587PERLVAR(I, PosixCntrl, SV *)
588PERLVAR(I, XPosixCntrl, SV *)
589
590PERLVAR(I, PosixDigit, SV *)
591
592PERLVAR(I, L1PosixGraph,SV *)
593PERLVAR(I, PosixGraph, SV *)
594
3f427fd9
KW
595PERLVAR(I, L1PosixLower,SV *)
596PERLVAR(I, PosixLower, SV *)
597
598PERLVAR(I, L1PosixPrint,SV *)
599PERLVAR(I, PosixPrint, SV *)
600
601PERLVAR(I, L1PosixPunct,SV *)
602PERLVAR(I, PosixPunct, SV *)
603
604PERLVAR(I, PosixSpace, SV *)
605PERLVAR(I, XPosixSpace, SV *)
606
607PERLVAR(I, L1PosixUpper,SV *)
608PERLVAR(I, PosixUpper, SV *)
609
610PERLVAR(I, L1PosixWord, SV *)
611PERLVAR(I, PosixWord, SV *)
612
613PERLVAR(I, PosixXDigit, SV *)
614PERLVAR(I, XPosixXDigit, SV *)
615
616PERLVAR(I, VertSpace, SV *)
617
a3e1f3a6 618/* utf8 character class swashes */
115ff745 619PERLVAR(I, utf8_alnum, SV *)
115ff745
NC
620PERLVAR(I, utf8_alpha, SV *)
621PERLVAR(I, utf8_space, SV *)
115ff745
NC
622PERLVAR(I, utf8_graph, SV *)
623PERLVAR(I, utf8_digit, SV *)
624PERLVAR(I, utf8_upper, SV *)
625PERLVAR(I, utf8_lower, SV *)
626PERLVAR(I, utf8_print, SV *)
627PERLVAR(I, utf8_punct, SV *)
628PERLVAR(I, utf8_xdigit, SV *)
629PERLVAR(I, utf8_mark, SV *)
630PERLVAR(I, utf8_X_begin, SV *)
631PERLVAR(I, utf8_X_extend, SV *)
632PERLVAR(I, utf8_X_prepend, SV *)
633PERLVAR(I, utf8_X_non_hangul, SV *)
634PERLVAR(I, utf8_X_L, SV *)
635PERLVAR(I, utf8_X_LV, SV *)
636PERLVAR(I, utf8_X_LVT, SV *)
637PERLVAR(I, utf8_X_T, SV *)
638PERLVAR(I, utf8_X_V, SV *)
639PERLVAR(I, utf8_X_LV_LVT_V, SV *)
640PERLVAR(I, utf8_toupper, SV *)
641PERLVAR(I, utf8_totitle, SV *)
642PERLVAR(I, utf8_tolower, SV *)
643PERLVAR(I, utf8_tofold, SV *)
2e2b2571 644PERLVAR(I, utf8_quotemeta, SV *)
115ff745
NC
645PERLVAR(I, last_swash_hv, HV *)
646PERLVAR(I, last_swash_tmps, U8 *)
647PERLVAR(I, last_swash_slen, STRLEN)
45d91b83
KW
648PERLVARA(I, last_swash_key,12, U8)
649PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
d95e864f
NC
650
651#ifdef FCRYPT
115ff745 652PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
d95e864f
NC
653#endif
654
115ff745 655PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
e6b4660c
NC
656PERLVAR(I, srand_called, bool)
657PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
0672f40e 658
115ff745 659PERLVAR(I, parser, yy_parser *) /* current parser state */
12fbd33b 660
c4a30c8c
NC
661/* Array of signal handlers, indexed by signal number, through which the C
662 signal handler dispatches. */
115ff745 663PERLVAR(I, psig_ptr, SV **)
c4a30c8c 664/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
665 argument to a signal handler. Only one block of memory is allocated for
666 both psig_name and psig_ptr. */
115ff745 667PERLVAR(I, psig_name, SV **)
1d7c1841 668
c5be433b 669#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
670PERLVAR(I, Mem, struct IPerlMem *)
671PERLVAR(I, MemShared, struct IPerlMem *)
672PERLVAR(I, MemParse, struct IPerlMem *)
673PERLVAR(I, Env, struct IPerlEnv *)
674PERLVAR(I, StdIO, struct IPerlStdIO *)
675PERLVAR(I, LIO, struct IPerlLIO *)
676PERLVAR(I, Dir, struct IPerlDir *)
677PERLVAR(I, Sock, struct IPerlSock *)
678PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 679#endif
1d7c1841 680
115ff745
NC
681PERLVAR(I, ptr_table, PTR_TBL_t *)
682PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 683
115ff745 684PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 685
d95e864f 686
1fcf4c12 687#if defined(USE_ITHREADS)
115ff745 688PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
e6853197 689 regex_padav */
115ff745 690PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
e6853197 691 values in op_pmoffset of pmop.
402d2eb1
NC
692 Entry 0 is an SV whose PV is a
693 "packed" list of IVs listing
e6853197 694 the now-free slots in the array */
1fcf4c12
AB
695#endif
696
ea68fd67 697#ifdef USE_REENTRANT_API
115ff745 698PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
699#endif
700
115ff745
NC
701PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
702PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 703
a1ea730d 704#ifdef PERLIO_LAYERS
115ff745
NC
705PERLVARI(I, perlio, PerlIOl *, NULL)
706PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
707PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
708#endif
709
115ff745 710PERLVARI(I, encoding, SV *, NULL) /* character encoding */
0a378802 711
115ff745 712PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
ce333219 713
115ff745
NC
714PERLVAR(I, utf8_idstart, SV *)
715PERLVAR(I, utf8_idcont, SV *)
716PERLVAR(I, utf8_xidstart, SV *)
b6912c02 717PERLVAR(I, utf8_perl_idstart, SV *)
115ff745 718PERLVAR(I, utf8_xidcont, SV *)
82686b01 719
115ff745 720PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
147f47de 721
115ff745
NC
722PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
723PERLVARI(I, unitcheckav_save, AV *, NULL)
724 /* save UNITCHECK{}s when compiling */
ece599bd 725
115ff745 726PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 727
115ff745 728PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
9f7da6d5 729
15a5279a 730/* Hooks to shared SVs and locks. */
115ff745
NC
731PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
732PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
d0647d4e
NC
733#ifdef NO_MATHOMS
734# define PERL_UNLOCK_HOOK Perl_sv_nosharing
735#else
736/* This reference ensures that the mathoms are linked with perl */
737# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
738#endif
115ff745 739PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 740
115ff745 741PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 742
9e08d3a4 743/* Can shared object be destroyed */
115ff745 744PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 745
01d65469 746#ifndef PERL_MICRO
115ff745 747PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 748#endif
92f022bb 749
115ff745 750PERLVARI(I, hash_seed, UV, 0) /* Hash initializer */
504f80c1 751
115ff745 752PERLVARI(I, rehash_seed, UV, 0) /* 582 hash initializer */
4b5190b5 753
115ff745 754PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 755
9e08d3a4
NC
756/* Register of known Method Resolution Orders.
757 What this actually points to is an implementation detail (it may change to
758 a structure incorporating a reference count - use mro_get_from_name to
759 retrieve a C<struct mro_alg *> */
115ff745 760PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
761
762/* Compile-time block start/end hooks */
115ff745 763PERLVAR(I, blockhooks, AV *)
9e08d3a4
NC
764
765/* Everything that folds to a given character, for case insensitivity regex
766 * matching */
115ff745 767PERLVARI(I, utf8_foldclosures, HV *, NULL)
9e08d3a4
NC
768
769/* List of characters that participate in folds (except marks, etc in
770 * multi-char folds) */
115ff745 771PERLVARI(I, utf8_foldable, SV *, NULL)
9e08d3a4 772
115ff745 773PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 774
d67594ff
FC
775/* Hook for File::Glob */
776PERLVARI(I, globhook, globhook_t, NULL)
777
e6b4660c 778PERLVARI(I, glob_index, int, 0)
115ff745 779PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
30b0736d 780
ffee3ff6
NC
781/* The last unconditional member of the interpreter structure when 5.10.0 was
782 released. The offset of the end of this is baked into a global variable in
783 any shared perl library which will allow a sanity test in future perl
784 releases. */
30b0736d 785#define PERL_LAST_5_16_0_INTERP_MEMBER Ireentrant_retint
ffee3ff6 786
f16dd614 787#ifdef PERL_IMPLICIT_CONTEXT
115ff745 788PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 789PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
ba6d381e 790# ifdef PERL_GLOBAL_STRUCT_PRIVATE
115ff745 791PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
ba6d381e 792# endif
f16dd614
DM
793#endif
794
7cb608b5
NC
795#ifdef PERL_TRACK_MEMPOOL
796/* For use with the memory debugging code in util.c */
115ff745 797PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
7cb608b5
NC
798#endif
799
ba6d381e
NC
800#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
801/* File descriptor to talk to the child which dumps scalars. */
115ff745 802PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
803#endif
804
ba6d381e 805#ifdef PERL_MAD
115ff745 806PERLVARI(I, madskills, bool, FALSE) /* preserve all syntactic info */
ba6d381e 807 /* (MAD = Misc Attribute Decoration) */
115ff745 808PERLVARI(I, xmlfp, PerlIO *, NULL)
ba6d381e
NC
809#endif
810
811#ifdef PL_OP_SLAB_ALLOC
115ff745
NC
812PERLVAR(I, OpPtr, I32 **)
813PERLVARI(I, OpSpace, I32, 0)
814PERLVAR(I, OpSlab, I32 *)
ba6d381e
NC
815#endif
816
f1fac472 817#ifdef PERL_DEBUG_READONLY_OPS
115ff745
NC
818PERLVARI(I, slabs, I32**, NULL) /* Array of slabs that have been allocated */
819PERLVARI(I, slab_count, U32, 0) /* Size of the array */
f1fac472
NC
820#endif
821
d7a2c63c 822#ifdef DEBUG_LEAKING_SCALARS
115ff745 823PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
824#endif
825
157b3822
NC
826/* If you are adding a U8 or U16, check to see if there are 'Space' comments
827 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
828
829/* Within a stable branch, new variables must be added to the very end, before
830 * this comment, for binary compatibility (the offsets of the old members must
831 * not change).
b83cd129 832 * (Don't forget to add your variable also to perl_clone()!)
e3acbfda 833 * XSUB.h provides wrapper functions via perlapi.h that make this
b83cd129
JH
834 * irrelevant, but not all code may be expected to #include XSUB.h.
835 */