summaryrefslogtreecommitdiff
path: root/gnu/usr.bin/perl/intrpvar.h
blob: cc9e46ededd0dabf14a6d1fa29c1198ee2e80efb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
/*   intrpvar.h 
 *
 *    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
 *    2006, 2007, 2008 by Larry Wall and others
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

/*
=head1 Per-Interpreter Variables
*/

/* These variables are per-interpreter in threaded/multiplicity builds,
 * global otherwise.

 * Don't forget to re-run regen/embed.pl to propagate changes! */

/* New variables must be added to the very end for binary compatibility. */

/* Don't forget to add your variable also to perl_clone()! (in sv.c) */

/* The 'I' prefix is only needed for vars that need appropriate #defines
 * generated when built with or without MULTIPLICITY.  It is also used
 * to generate the appropriate export list for win32.  If the variable
 * needs to be initialized, use PERLVARI.
 *
 * When building without MULTIPLICITY, these variables will be truly global.
 *
 * Important ones in the first cache line (if alignment is done right) */

PERLVAR(I, stack_sp,	SV **)		/* top of the stack */
#ifdef OP_IN_REGISTER
PERLVAR(I, opsave,	OP *)
#else
PERLVAR(I, op,		OP *)		/* currently executing op */
#endif
PERLVAR(I, curpad,	SV **)		/* active pad (lexicals+tmps) */

PERLVAR(I, stack_base,	SV **)
PERLVAR(I, stack_max,	SV **)

PERLVAR(I, scopestack,	I32 *)		/* scopes we've ENTERed */
/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
   present always, as -DDEUBGGING must be binary compatible with non.  */
PERLVARI(I, scopestack_name, const char * *, NULL)
PERLVAR(I, scopestack_ix, I32)
PERLVAR(I, scopestack_max, I32)

PERLVAR(I, savestack,	ANY *)		/* items that need to be restored when
					   LEAVEing scopes we've ENTERed */
PERLVAR(I, savestack_ix, I32)
PERLVAR(I, savestack_max, I32)

PERLVAR(I, tmps_stack,	SV **)		/* mortals we've made */
PERLVARI(I, tmps_ix,	I32,	-1)
PERLVARI(I, tmps_floor,	I32,	-1)
PERLVAR(I, tmps_max,	I32)
PERLVAR(I, modcount,	I32)		/* how much op_lvalue()ification in
					   assignment? */

PERLVAR(I, markstack,	I32 *)		/* stack_sp locations we're
					   remembering */
PERLVAR(I, markstack_ptr, I32 *)
PERLVAR(I, markstack_max, I32 *)

PERLVAR(I, Sv,		SV *)		/* used to hold temporary values */
PERLVAR(I, Xpv,		XPV *)		/* used to hold temporary values */

/*
=for apidoc Amn|STRLEN|PL_na

A convenience variable which is typically used with C<SvPV> when one
doesn't care about the length of the string.  It is usually more efficient
to either declare a local variable and use that instead or to use the
C<SvPV_nolen> macro.

=cut
*/

PERLVAR(I, na,		STRLEN)		/* for use in SvPV when length is
					   Not Applicable */

/* stat stuff */
PERLVAR(I, statbuf,	Stat_t)
PERLVAR(I, statcache,	Stat_t)		/* _ */
PERLVAR(I, statgv,	GV *)
PERLVARI(I, statname,	SV *,	NULL)

#ifdef HAS_TIMES
PERLVAR(I, timesbuf,	struct tms)
#endif

/* Fields used by magic variables such as $@, $/ and so on */
PERLVAR(I, curpm,	PMOP *)		/* what to do \ interps in REs from */

/*
=for apidoc mn|SV*|PL_rs

The input record separator - C<$/> in Perl space.

=for apidoc mn|GV*|PL_last_in_gv

The GV which was last used for a filehandle input operation. (C<< <FH> >>)

=for apidoc mn|GV*|PL_ofsgv

The glob containing the output field separator - C<*,> in Perl space.

=cut
*/

PERLVAR(I, rs,		SV *)		/* input record separator $/ */
PERLVAR(I, last_in_gv,	GV *)		/* GV used in last <FH> */
PERLVAR(I, ofsgv,	GV *)		/* GV of output field separator *, */
PERLVAR(I, defoutgv,	GV *)		/* default FH for output */
PERLVARI(I, chopset,	const char *, " \n-")	/* $: */
PERLVAR(I, formtarget,	SV *)
PERLVAR(I, bodytarget,	SV *)
PERLVAR(I, toptarget,	SV *)

/* Stashes */
PERLVAR(I, defstash,	HV *)		/* main symbol table */
PERLVAR(I, curstash,	HV *)		/* symbol table for current package */

PERLVAR(I, restartop,	OP *)		/* propagating an error from croak? */
PERLVAR(I, restartjmpenv, JMPENV *)	/* target frame for longjmp in die */
PERLVAR(I, curcop,	COP *)
PERLVAR(I, curstack,	AV *)		/* THE STACK */
PERLVAR(I, curstackinfo, PERL_SI *)	/* current stack + context */
PERLVAR(I, mainstack,	AV *)		/* the stack when nothing funny is
					   happening */

PERLVAR(I, top_env,	JMPENV *)	/* ptr to current sigjmp environment */
PERLVAR(I, start_env,	JMPENV)		/* empty startup sigjmp environment */
PERLVARI(I, errors,	SV *,	NULL)	/* outstanding queued errors */

/* statics "owned" by various functions */
PERLVAR(I, hv_fetch_ent_mh, HE*)	/* owned by hv_fetch_ent() */

PERLVAR(I, lastgotoprobe, OP*)		/* from pp_ctl.c */

/* sort stuff */
PERLVAR(I, sortcop,	OP *)		/* user defined sort routine */
PERLVAR(I, sortstash,	HV *)		/* which is in some package or other */
PERLVAR(I, firstgv,	GV *)		/* $a */
PERLVAR(I, secondgv,	GV *)		/* $b */

/* float buffer */
PERLVAR(I, efloatbuf,	char *)
PERLVAR(I, efloatsize,	STRLEN)

/* regex stuff */

PERLVAR(I, reg_state,	struct re_save_state)

PERLVAR(I, regdummy,	regnode)	/* from regcomp.c */

PERLVARI(I, dumpindent,	U16,	4)	/* number of blanks per dump
					   indentation level */


PERLVAR(I, utf8locale,	bool)		/* utf8 locale detected */
PERLVARI(I, rehash_seed_set, bool, FALSE)	/* 582 hash initialized? */

PERLVARA(I, colors,6,	char *)		/* from regcomp.c */

/*
=for apidoc Amn|peep_t|PL_peepp

Pointer to the per-subroutine peephole optimiser.  This is a function
that gets called at the end of compilation of a Perl subroutine (or
equivalently independent piece of Perl code) to perform fixups of
some ops and to perform small-scale optimisations.  The function is
called once for each subroutine that is compiled, and is passed, as sole
parameter, a pointer to the op that is the entry point to the subroutine.
It modifies the op tree in place.

The peephole optimiser should never be completely replaced.  Rather,
add code to it by wrapping the existing optimiser.  The basic way to do
this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
If the new code wishes to operate on ops throughout the subroutine's
structure, rather than just at the top level, it is likely to be more
convenient to wrap the L</PL_rpeepp> hook.

=cut
*/

PERLVARI(I, peepp,	peep_t, Perl_peep)

/*
=for apidoc Amn|peep_t|PL_rpeepp

Pointer to the recursive peephole optimiser.  This is a function
that gets called at the end of compilation of a Perl subroutine (or
equivalently independent piece of Perl code) to perform fixups of some
ops and to perform small-scale optimisations.  The function is called
once for each chain of ops linked through their C<op_next> fields;
it is recursively called to handle each side chain.  It is passed, as
sole parameter, a pointer to the op that is at the head of the chain.
It modifies the op tree in place.

The peephole optimiser should never be completely replaced.  Rather,
add code to it by wrapping the existing optimiser.  The basic way to do
this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
If the new code wishes to operate only on ops at a subroutine's top level,
rather than throughout the structure, it is likely to be more convenient
to wrap the L</PL_peepp> hook.

=cut
*/

PERLVARI(I, rpeepp,	peep_t, Perl_rpeep)

/*
=for apidoc Amn|Perl_ophook_t|PL_opfreehook

When 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.
This allows extensions to free any extra attribute they have locally attached to an OP.
It is also assured to first fire for the parent OP and then for its kids.

When 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.

=cut
*/

PERLVARI(I, opfreehook,	Perl_ophook_t, 0) /* op_free() hook */

PERLVARI(I, watchaddr,	char **, 0)
PERLVAR(I, watchok,	char *)

/* the currently active slab in a chain of slabs of regmatch states,
 * and the currently active state within that slab */

PERLVARI(I, regmatch_slab, regmatch_slab *,	NULL)
PERLVAR(I, regmatch_state, regmatch_state *)

/* Put anything new that is pointer aligned here. */

PERLVAR(I, delaymagic,	U16)		/* ($<,$>) = ... */
PERLVAR(I, localizing,	U8)		/* are we processing a local() list? */
PERLVAR(I, colorset,	bool)		/* from regcomp.c */
PERLVAR(I, in_eval,	U8)		/* trap "fatal" errors? */
PERLVAR(I, tainted,	bool)		/* using variables controlled by $< */
PERLVAR(I, tainting,	bool)		/* doing taint checks */

/* This value may be set when embedding for full cleanup  */
/* 0=none, 1=full, 2=full with checks */
/* mod_perl is special, and also assigns a meaning -1 */
PERLVARI(I, perl_destruct_level, signed char,	0)

/* current phase the interpreter is in */
PERLVARI(I, phase,	enum perl_phase, PERL_PHASE_CONSTRUCT)

PERLVAR(I, perldb,	U32)

PERLVAR(I, signals,	U32)	/* Using which pre-5.8 signals */

/* pseudo environmental stuff */
PERLVAR(I, origargc,	int)
PERLVAR(I, origargv,	char **)
PERLVAR(I, envgv,	GV *)
PERLVAR(I, incgv,	GV *)
PERLVAR(I, hintgv,	GV *)
PERLVAR(I, origfilename, char *)
PERLVAR(I, diehook,	SV *)
PERLVAR(I, warnhook,	SV *)

/* switches */
PERLVAR(I, patchlevel,	SV *)
PERLVAR(I, apiversion,	SV *)
PERLVAR(I, localpatches, const char * const *)
PERLVARI(I, splitstr,	const char *, " ")

PERLVAR(I, minus_c,	bool)
PERLVAR(I, minus_n,	bool)
PERLVAR(I, minus_p,	bool)
PERLVAR(I, minus_l,	bool)
PERLVAR(I, minus_a,	bool)
PERLVAR(I, minus_F,	bool)
PERLVAR(I, doswitches,	bool)
PERLVAR(I, minus_E,	bool)

/*

=for apidoc mn|bool|PL_dowarn

The C variable which corresponds to Perl's $^W warning variable.

=cut
*/

PERLVAR(I, dowarn,	U8)
PERLVAR(I, sawampersand, bool)		/* must save all match strings */
PERLVAR(I, unsafe,	bool)
PERLVAR(I, exit_flags,	U8)		/* was exit() unexpected, etc. */

PERLVARI(I, reginterp_cnt, I32,	 0)	/* Whether "Regexp" was interpolated. */

PERLVAR(I, inplace,	char *)
PERLVAR(I, e_script,	SV *)

/* magical thingies */
PERLVAR(I, basetime,	Time_t)		/* $^T */
PERLVAR(I, formfeed,	SV *)		/* $^L */


PERLVARI(I, maxsysfd,	I32,	MAXSYSFD)
					/* top fd to pass to subprocesses */
PERLVAR(I, statusvalue,	I32)		/* $? */
#ifdef VMS
PERLVAR(I, statusvalue_vms, U32)
#else
PERLVAR(I, statusvalue_posix, I32)
#endif

PERLVARI(I, sig_pending, int, 0)	/* Number if highest signal pending */
PERLVAR(I, psig_pend, int *)		/* per-signal "count" of pending */

/* shortcuts to various I/O objects */
PERLVAR(I, stdingv,	GV *)		/*  *STDIN      */
PERLVAR(I, stderrgv,	GV *)		/*  *STDERR     */
PERLVAR(I, defgv,	GV *)
PERLVAR(I, argvgv,	GV *)		/*  *ARGV       */
PERLVAR(I, argvoutgv,	GV *)		/*  *ARGVOUT    */
PERLVAR(I, argvout_stack, AV *)

/* shortcuts to regexp stuff */
PERLVAR(I, replgv,	GV *)		/*  *^R         */

/* shortcuts to misc objects */
PERLVAR(I, errgv,	GV *)		/*  *@          */

/* shortcuts to debugging objects */
PERLVAR(I, DBgv,	GV *)		/*  *DB::DB     */
PERLVAR(I, DBline,	GV *)		/*  *DB::line   */

/*
=for apidoc mn|GV *|PL_DBsub
When Perl is run in debugging mode, with the B<-d> switch, this GV contains
the SV which holds the name of the sub being debugged.  This is the C
variable which corresponds to Perl's $DB::sub variable.  See
C<PL_DBsingle>.

=for apidoc mn|SV *|PL_DBsingle
When Perl is run in debugging mode, with the B<-d> switch, this SV is a
boolean which indicates whether subs are being single-stepped.
Single-stepping is automatically turned on after every step.  This is the C
variable which corresponds to Perl's $DB::single variable.  See
C<PL_DBsub>.

=for apidoc mn|SV *|PL_DBtrace
Trace variable used when Perl is run in debugging mode, with the B<-d>
switch.  This is the C variable which corresponds to Perl's $DB::trace
variable.  See C<PL_DBsingle>.

=cut
*/

PERLVAR(I, DBsub,	GV *)		/*  *DB::sub    */
PERLVAR(I, DBsingle,	SV *)		/*  $DB::single */
PERLVAR(I, DBtrace,	SV *)		/*  $DB::trace  */
PERLVAR(I, DBsignal,	SV *)		/*  $DB::signal */
PERLVAR(I, dbargs,	AV *)		/* args to call listed by caller function */

/* symbol tables */
PERLVAR(I, debstash,	HV *)		/* symbol table for perldb package */
PERLVAR(I, globalstash,	HV *)		/* global keyword overrides imported here */
PERLVAR(I, curstname,	SV *)		/* name of current package */
PERLVAR(I, beginav,	AV *)		/* names of BEGIN subroutines */
PERLVAR(I, endav,	AV *)		/* names of END subroutines */
PERLVAR(I, unitcheckav,	AV *)		/* names of UNITCHECK subroutines */
PERLVAR(I, checkav,	AV *)		/* names of CHECK subroutines */
PERLVAR(I, initav,	AV *)		/* names of INIT subroutines */
PERLVAR(I, strtab,	HV *)		/* shared string table */
PERLVARI(I, sub_generation, U32, 1)	/* incr to invalidate method cache */

/* funky return mechanisms */
PERLVAR(I, forkprocess,	int)		/* so do_open |- can return proc# */

/* memory management */
PERLVAR(I, sv_count,	I32)		/* how many SV* are currently allocated */
PERLVAR(I, sv_objcount,	I32)		/* how many objects are currently allocated */
PERLVAR(I, sv_root,	SV *)		/* storage for SVs belonging to interp */
PERLVAR(I, sv_arenaroot, SV *)		/* list of areas for garbage collection */

/* subprocess state */
PERLVAR(I, fdpid,	AV *)		/* keep fd-to-pid mappings for my_popen */

/* internal state */
PERLVARI(I, op_mask,	char *,	NULL)	/* masked operations for safe evals */

/* current interpreter roots */
PERLVAR(I, main_cv,	CV *)
PERLVAR(I, main_root,	OP *)
PERLVAR(I, main_start,	OP *)
PERLVAR(I, eval_root,	OP *)
PERLVAR(I, eval_start,	OP *)

/* runtime control stuff */
PERLVARI(I, curcopdb,	COP *,	NULL)

PERLVAR(I, filemode,	int)		/* so nextargv() can preserve mode */
PERLVAR(I, lastfd,	int)		/* what to preserve mode on */
PERLVAR(I, oldname,	char *)		/* what to preserve mode on */
PERLVAR(I, Argv,	const char **)	/* stuff to free from do_aexec, vfork safe */
PERLVAR(I, Cmd,		char *)		/* stuff to free from do_aexec, vfork safe */
/* Elements in this array have ';' appended and are injected as a single line
   into the tokeniser. You can't put any (literal) newlines into any program
   you stuff in into this array, as the point where it's injected is expecting
   a single physical line. */
PERLVAR(I, preambleav,	AV *)
PERLVAR(I, mess_sv,	SV *)
PERLVAR(I, ors_sv,	SV *)		/* output record separator $\ */
/* statics moved here for shared library purposes */
PERLVARI(I, gensym,	I32,	0)	/* next symbol for getsym() to define */
PERLVARI(I, cv_has_eval, bool, FALSE)	/* PL_compcv includes an entereval or similar */
PERLVAR(I, taint_warn,	bool)		/* taint warns instead of dying */
PERLVARI(I, laststype,	U16,	OP_STAT)
PERLVARI(I, laststatval, int,	-1)

/* interpreter atexit processing */
PERLVARI(I, exitlistlen, I32, 0)	/* length of same */
PERLVARI(I, exitlist,	PerlExitListEntry *, NULL)
					/* list of exit functions */

/*
=for apidoc Amn|HV*|PL_modglobal

C<PL_modglobal> is a general purpose, interpreter global HV for use by
extensions that need to keep information on a per-interpreter basis.
In a pinch, it can also be used as a symbol table for extensions
to share data among each other.  It is a good idea to use keys
prefixed by the package name of the extension that owns the data.

=cut
*/

PERLVAR(I, modglobal,	HV *)		/* per-interp module data */

/* these used to be in global before 5.004_68 */
PERLVARI(I, profiledata, U32 *,	NULL)	/* table of ops, counts */

PERLVAR(I, compiling,	COP)		/* compiling/done executing marker */

PERLVAR(I, compcv,	CV *)		/* currently compiling subroutine */
PERLVAR(I, comppad,	AV *)		/* storage for lexically scoped temporaries */
PERLVAR(I, comppad_name, AV *)		/* variable names for "my" variables */
PERLVAR(I, comppad_name_fill,	I32)	/* last "introduced" variable offset */
PERLVAR(I, comppad_name_floor,	I32)	/* start of vars in innermost block */

#ifdef HAVE_INTERP_INTERN
PERLVAR(I, sys_intern,	struct interp_intern)
					/* platform internals */
#endif

/* more statics moved here */
PERLVAR(I, DBcv,	CV *)		/* from perl.c */
PERLVARI(I, generation,	int,	100)	/* from op.c */

PERLVARI(I, in_clean_objs,bool,    FALSE)	/* from sv.c */
PERLVARI(I, in_clean_all, bool,    FALSE)	/* ptrs to freed SVs now legal */
PERLVAR(I, nomemok,	bool)		/* let malloc context handle nomem */
PERLVARI(I, savebegin,	bool,	FALSE)	/* save BEGINs for compiler	*/

PERLVAR(I, delaymagic_uid,	Uid_t)	/* current real user id, only for delaymagic */
PERLVAR(I, delaymagic_euid,	Uid_t)	/* current effective user id, only for delaymagic */
PERLVAR(I, delaymagic_gid,	Gid_t)	/* current real group id, only for delaymagic */
PERLVAR(I, delaymagic_egid,	Gid_t)	/* current effective group id, only for delaymagic */
PERLVARI(I, an,		U32,	0)	/* malloc sequence number */

#ifdef DEBUGGING
    /* exercise wrap-around */
    #define PERL_COP_SEQMAX (U32_MAX-50)
#else
    #define PERL_COP_SEQMAX 0
#endif
PERLVARI(I, cop_seqmax,	U32,	PERL_COP_SEQMAX) /* statement sequence number */
#undef PERL_COP_SEQMAX

PERLVARI(I, evalseq,	U32,	0)	/* eval sequence number */
PERLVAR(I, origalen,	U32)
PERLVAR(I, origenviron,	char **)
#ifdef PERL_USES_PL_PIDSTATUS
PERLVAR(I, pidstatus,	HV *)		/* pid-to-status mappings for waitpid */
#endif
PERLVAR(I, osname,	char *)		/* operating system */

PERLVAR(I, sighandlerp,	Sighandler_t)

PERLVARA(I, body_roots,	PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */

PERLVAR(I, unicode, U32)	/* Unicode features: $ENV{PERL_UNICODE} or -C */

PERLVARI(I, maxo,	int,	MAXO)	/* maximum number of ops */

PERLVARI(I, runops,	runops_proc_t, RUNOPS_DEFAULT)

/*
=for apidoc Amn|SV|PL_sv_undef
This is the C<undef> SV.  Always refer to this as C<&PL_sv_undef>.

=for apidoc Amn|SV|PL_sv_no
This is the C<false> SV.  See C<PL_sv_yes>.  Always refer to this as
C<&PL_sv_no>.

=for apidoc Amn|SV|PL_sv_yes
This is the C<true> SV.  See C<PL_sv_no>.  Always refer to this as
C<&PL_sv_yes>.

=cut
*/

PERLVAR(I, sv_undef,	SV)
PERLVAR(I, sv_no,	SV)
PERLVAR(I, sv_yes,	SV)

PERLVAR(I, subname,	SV *)		/* name of current subroutine */

PERLVAR(I, subline,	I32)		/* line this subroutine began on */
PERLVAR(I, min_intro_pending, I32)	/* start of vars to introduce */

PERLVAR(I, max_intro_pending, I32)	/* end of vars to introduce */
PERLVAR(I, padix,	I32)		/* max used index in current "register" pad */

PERLVAR(I, padix_floor,	I32)		/* how low may inner block reset padix */

PERLVAR(I, hints,	U32)		/* pragma-tic compile-time flags */

PERLVAR(I, debug,	VOL U32)	/* flags given to -D switch */

/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen"  */
PERLVARI(I, breakable_sub_gen, U32, 0)

PERLVARI(I, amagic_generation, long, 0)

#ifdef USE_LOCALE_COLLATE
PERLVAR(I, collation_name, char *)	/* Name of current collation */
PERLVAR(I, collxfrm_base, Size_t)	/* Basic overhead in *xfrm() */
PERLVARI(I, collxfrm_mult,Size_t, 2)	/* Expansion factor in *xfrm() */
PERLVARI(I, collation_ix, U32,	0)	/* Collation generation index */
PERLVARI(I, collation_standard, bool, TRUE)
					/* Assume simple collation */
#endif /* USE_LOCALE_COLLATE */


#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
#  define PERL___I -1
#else
#  define PERL___I 1
#endif
PERLVARI(I, utf8cache, I8, PERL___I)	/* Is the utf8 caching code enabled? */
#undef PERL___I


#ifdef USE_LOCALE_NUMERIC

PERLVARI(I, numeric_standard, bool, TRUE)
					/* Assume simple numerics */
PERLVARI(I, numeric_local, bool, TRUE)
					/* Assume local numerics */
PERLVAR(I, numeric_name, char *)	/* Name of current numeric locale */
PERLVAR(I, numeric_radix_sv, SV *)	/* The radix separator if not '.' */

#endif /* !USE_LOCALE_NUMERIC */

/* Unicode inversion lists */
PERLVAR(I, ASCII,	SV *)
PERLVAR(I, Latin1,	SV *)
PERLVAR(I, AboveLatin1,	SV *)

PERLVAR(I, PerlSpace,	SV *)
PERLVAR(I, XPerlSpace,	SV *)

PERLVAR(I, L1PosixAlnum,SV *)
PERLVAR(I, PosixAlnum,	SV *)

PERLVAR(I, L1PosixAlpha,SV *)
PERLVAR(I, PosixAlpha,	SV *)

PERLVAR(I, PosixBlank,	SV *)
PERLVAR(I, XPosixBlank,	SV *)

PERLVAR(I, L1Cased,	SV *)

PERLVAR(I, PosixCntrl,	SV *)
PERLVAR(I, XPosixCntrl,	SV *)

PERLVAR(I, PosixDigit,	SV *)

PERLVAR(I, L1PosixGraph,SV *)
PERLVAR(I, PosixGraph,	SV *)

PERLVAR(I, L1PosixLower,SV *)
PERLVAR(I, PosixLower,	SV *)

PERLVAR(I, L1PosixPrint,SV *)
PERLVAR(I, PosixPrint,	SV *)

PERLVAR(I, L1PosixPunct,SV *)
PERLVAR(I, PosixPunct,	SV *)

PERLVAR(I, PosixSpace,	SV *)
PERLVAR(I, XPosixSpace,	SV *)

PERLVAR(I, L1PosixUpper,SV *)
PERLVAR(I, PosixUpper,	SV *)

PERLVAR(I, L1PosixWord,	SV *)
PERLVAR(I, PosixWord,	SV *)

PERLVAR(I, PosixXDigit,	SV *)
PERLVAR(I, XPosixXDigit, SV *)

PERLVAR(I, VertSpace,   SV *)

/* utf8 character class swashes */
PERLVAR(I, utf8_alnum,	SV *)
PERLVAR(I, utf8_alpha,	SV *)
PERLVAR(I, utf8_space,	SV *)
PERLVAR(I, utf8_graph,	SV *)
PERLVAR(I, utf8_digit,	SV *)
PERLVAR(I, utf8_upper,	SV *)
PERLVAR(I, utf8_lower,	SV *)
PERLVAR(I, utf8_print,	SV *)
PERLVAR(I, utf8_punct,	SV *)
PERLVAR(I, utf8_xdigit,	SV *)
PERLVAR(I, utf8_mark,	SV *)
PERLVAR(I, utf8_X_begin, SV *)
PERLVAR(I, utf8_X_extend, SV *)
PERLVAR(I, utf8_X_prepend, SV *)
PERLVAR(I, utf8_X_non_hangul, SV *)
PERLVAR(I, utf8_X_L,	SV *)
PERLVAR(I, utf8_X_LV,	SV *)
PERLVAR(I, utf8_X_LVT,	SV *)
PERLVAR(I, utf8_X_T,	SV *)
PERLVAR(I, utf8_X_V,	SV *)
PERLVAR(I, utf8_X_LV_LVT_V, SV *)
PERLVAR(I, utf8_toupper, SV *)
PERLVAR(I, utf8_totitle, SV *)
PERLVAR(I, utf8_tolower, SV *)
PERLVAR(I, utf8_tofold,	SV *)
PERLVAR(I, utf8_quotemeta, SV *)
PERLVAR(I, last_swash_hv, HV *)
PERLVAR(I, last_swash_tmps, U8 *)
PERLVAR(I, last_swash_slen, STRLEN)
PERLVARA(I, last_swash_key,12, U8)
PERLVAR(I, last_swash_klen, U8)		/* Only needs to store 0-12  */

#ifdef FCRYPT
PERLVARI(I, cryptseen,	bool,	FALSE)	/* has fast crypt() been initialized? */
#endif

PERLVAR(I, pad_reset_pending, bool)	/* reset pad on next attempted alloc */
PERLVAR(I, srand_called, bool)
PERLVARI(I, in_load_module, bool, FALSE)	/* to prevent recursions in PerlIO_find_layer */

PERLVAR(I, parser,	yy_parser *)	/* current parser state */

/* Array of signal handlers, indexed by signal number, through which the C
   signal handler dispatches.  */
PERLVAR(I, psig_ptr,	SV **)
/* Array of names of signals, indexed by signal number, for (re)use as the first
   argument to a signal handler.   Only one block of memory is allocated for
   both psig_name and psig_ptr.  */
PERLVAR(I, psig_name,	SV **)

#if defined(PERL_IMPLICIT_SYS)
PERLVAR(I, Mem,		struct IPerlMem *)
PERLVAR(I, MemShared,	struct IPerlMem *)
PERLVAR(I, MemParse,	struct IPerlMem *)
PERLVAR(I, Env,		struct IPerlEnv *)
PERLVAR(I, StdIO,	struct IPerlStdIO *)
PERLVAR(I, LIO,		struct IPerlLIO *)
PERLVAR(I, Dir,		struct IPerlDir *)
PERLVAR(I, Sock,	struct IPerlSock *)
PERLVAR(I, Proc,	struct IPerlProc *)
#endif

PERLVAR(I, ptr_table,	PTR_TBL_t *)
PERLVARI(I, beginav_save, AV *, NULL)	/* save BEGIN{}s when compiling */

PERLVAR(I, body_arenas, void *)		/* pointer to list of body-arenas */


#if defined(USE_ITHREADS)
PERLVAR(I, regex_pad,     SV **)	/* Shortcut into the array of
					   regex_padav */
PERLVAR(I, regex_padav,   AV *)		/* All regex objects, indexed via the
					   values in op_pmoffset of pmop.
					   Entry 0 is an SV whose PV is a
					   "packed" list of IVs listing
					   the now-free slots in the array */
#endif

#ifdef USE_REENTRANT_API
PERLVAR(I, reentrant_buffer, REENTR *)	/* here we store the _r buffers */
#endif

PERLVAR(I, custom_op_names, HV *)	/* Names of user defined ops */
PERLVAR(I, custom_op_descs, HV *)	/* Descriptions of user defined ops */

#ifdef PERLIO_LAYERS
PERLVARI(I, perlio,	PerlIOl *, NULL)
PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
#endif

PERLVARI(I, encoding,	SV *,	NULL)	/* character encoding */

PERLVAR(I, debug_pad,	struct perl_debug_pad)	/* always needed because of the re extension */

PERLVAR(I, utf8_idstart, SV *)
PERLVAR(I, utf8_idcont,	SV *)
PERLVAR(I, utf8_xidstart, SV *)
PERLVAR(I, utf8_perl_idstart, SV *)
PERLVAR(I, utf8_xidcont, SV *)

PERLVAR(I, sort_RealCmp, SVCOMPARE_t)

PERLVARI(I, checkav_save, AV *, NULL)	/* save CHECK{}s when compiling */
PERLVARI(I, unitcheckav_save, AV *, NULL)
					/* save UNITCHECK{}s when compiling */

PERLVARI(I, clocktick,	long,	0)	/* this many times() ticks in a second */

PERLVAR(I, stashcache,	HV *)		/* Cache to speed up S_method_common */

/* Hooks to shared SVs and locks. */
PERLVARI(I, sharehook,	share_proc_t, Perl_sv_nosharing)
PERLVARI(I, lockhook,	share_proc_t, Perl_sv_nosharing)
#ifdef NO_MATHOMS
#  define PERL_UNLOCK_HOOK Perl_sv_nosharing
#else
/* This reference ensures that the mathoms are linked with perl */
#  define PERL_UNLOCK_HOOK Perl_sv_nounlocking
#endif
PERLVARI(I, unlockhook,	share_proc_t, PERL_UNLOCK_HOOK)

PERLVARI(I, threadhook,	thrhook_proc_t,	Perl_nothreadhook)

/* Can shared object be destroyed */
PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)

#ifndef PERL_MICRO
PERLVARI(I, signalhook,	despatch_signals_proc_t, Perl_despatch_signals)
#endif

PERLVARI(I, hash_seed,	UV,	0)	/* Hash initializer */

PERLVARI(I, rehash_seed, UV,	0)	/* 582 hash initializer */

PERLVARI(I, isarev, HV *, NULL)		/* Reverse map of @ISA dependencies */

/* Register of known Method Resolution Orders.
   What this actually points to is an implementation detail (it may change to
   a structure incorporating a reference count - use mro_get_from_name to
   retrieve a C<struct mro_alg *>  */
PERLVAR(I, registered_mros, HV *)

/* Compile-time block start/end hooks */
PERLVAR(I, blockhooks,	AV *)

/* Everything that folds to a given character, for case insensitivity regex
 * matching */
PERLVARI(I, utf8_foldclosures, HV *, NULL)

/* List of characters that participate in folds (except marks, etc in
 * multi-char folds) */
PERLVARI(I, utf8_foldable, SV *, NULL)

PERLVAR(I, custom_ops,	HV *)		/* custom op registrations */

/* Hook for File::Glob */
PERLVARI(I, globhook,	globhook_t, NULL)

PERLVARI(I, glob_index,	int,	0)
PERLVAR(I, reentrant_retint, int)	/* Integer return value from reentrant functions */

/* The last unconditional member of the interpreter structure when 5.10.0 was
   released. The offset of the end of this is baked into a global variable in 
   any shared perl library which will allow a sanity test in future perl
   releases.  */
#define PERL_LAST_5_16_0_INTERP_MEMBER	Ireentrant_retint

#ifdef PERL_IMPLICIT_CONTEXT
PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
PERLVARI(I, my_cxt_size, int,	0)	/* size of PL_my_cxt_list */
#  ifdef PERL_GLOBAL_STRUCT_PRIVATE
PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
#  endif
#endif

#ifdef PERL_TRACK_MEMPOOL
/* For use with the memory debugging code in util.c  */
PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
#endif

#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
/* File descriptor to talk to the child which dumps scalars.  */
PERLVARI(I, dumper_fd,	int,	-1)
#endif

#ifdef PERL_MAD
PERLVARI(I, madskills,	bool,	FALSE)	/* preserve all syntactic info */
					/* (MAD = Misc Attribute Decoration) */
PERLVARI(I, xmlfp,	PerlIO *, NULL)
#endif

#ifdef PL_OP_SLAB_ALLOC
PERLVAR(I, OpPtr,	I32 **)
PERLVARI(I, OpSpace,	I32,	0)
PERLVAR(I, OpSlab,	I32 *)
#endif

#ifdef PERL_DEBUG_READONLY_OPS
PERLVARI(I, slabs,	I32**,	NULL)	/* Array of slabs that have been allocated */
PERLVARI(I, slab_count, U32,	0)	/* Size of the array */
#endif

#ifdef DEBUG_LEAKING_SCALARS
PERLVARI(I, sv_serial,	U32,	0)	/* SV serial number, used in sv.c */
#endif

/* If you are adding a U8 or U16, check to see if there are 'Space' comments
 * above on where there are gaps which currently will be structure padding.  */

/* Within a stable branch, new variables must be added to the very end, before
 * this comment, for binary compatibility (the offsets of the old members must
 *  not change).
 * (Don't forget to add your variable also to perl_clone()!)
 * XSUB.h provides wrapper functions via perlapi.h that make this
 * irrelevant, but not all code may be expected to #include XSUB.h.
 */