golden hour

/usr/lib/x86_64-linux-gnu/perl/5.30.0/CORE

File/Folder	Size	Actions
EXTERN.h	1.61 KB
INTERN.h	1.28 KB
XSUB.h	23.83 KB
av.h	3.22 KB
bitcount.h	850 B
charclass_invlists.h	3.92 MB
config.h	159.91 KB
cop.h	39.77 KB
cv.h	12.03 KB
dosish.h	5.33 KB
dquote_inline.h	1.82 KB
ebcdic_tables.h	48.39 KB
embed.h	100.29 KB
embedvar.h	22.92 KB
fakesdio.h	3.13 KB
feature.h	4.93 KB
form.h	1.43 KB
git_version.h	357 B
gv.h	10.46 KB
handy.h	123.57 KB
hv.h	24.95 KB
hv_func.h	10.53 KB
hv_macro.h	2.88 KB
inline.h	67.25 KB
intrpvar.h	28.74 KB
invlist_inline.h	2.91 KB
iperlsys.h	47.62 KB
keywords.h	6.43 KB
l1_char_class_tab.h	123.96 KB
malloc_ctl.h	1.49 KB
metaconfig.h	952 B
mg.h	2.94 KB
mg_data.h	4.9 KB
mg_raw.h	4.27 KB
mg_vtable.h	9.34 KB
mydtrace.h	1.65 KB
nostdio.h	3.31 KB
op.h	35.5 KB
op_reg_common.h	5.77 KB
opcode.h	91.09 KB
opnames.h	8.65 KB
overload.h	3.2 KB
pad.h	16.82 KB
parser.h	6.83 KB
patchlevel-debian.h	5.84 KB
patchlevel.h	5.25 KB
perl.h	263.84 KB
perl_inc_macro.h	6.08 KB
perl_langinfo.h	2.85 KB
perlapi.h	9.93 KB
perlio.h	9.24 KB
perliol.h	13.44 KB
perlsdio.h	527 B
perlvars.h	13 KB
perly.h	4.33 KB
pp.h	28.29 KB
pp_proto.h	11.85 KB
proto.h	252.88 KB
reentr.h	76.62 KB
regcharclass.h	136.87 KB
regcomp.h	47.78 KB
regexp.h	35.77 KB
regnodes.h	37.16 KB
sbox32_hash.h	55.95 KB
scope.h	11.61 KB
stadtx_hash.h	10.23 KB
sv.h	83.43 KB
thread.h	11.81 KB
time64.h	1.55 KB
time64_config.h	2 KB
uconfig.h	159.59 KB
uni_keywords.h	523.04 KB
unicode_constants.h	7.84 KB
unixish.h	5.07 KB
utf8.h	46.47 KB
utfebcdic.h	65.48 KB
util.h	9.78 KB
uudmap.h	904 B
vutil.h	7.81 KB
warnings.h	8.04 KB
zaphod32_hash.h	10.29 KB

Edit: mg.h

/*    mg.h
 *
 *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
 *    2000, 2002, 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.
 *
 */

struct mgvtbl {
    int		(*svt_get)	(pTHX_ SV *sv, MAGIC* mg);
    int		(*svt_set)	(pTHX_ SV *sv, MAGIC* mg);
    U32		(*svt_len)	(pTHX_ SV *sv, MAGIC* mg);
    int		(*svt_clear)(pTHX_ SV *sv, MAGIC* mg);
    int		(*svt_free)	(pTHX_ SV *sv, MAGIC* mg);
    int		(*svt_copy)	(pTHX_ SV *sv, MAGIC* mg,
    					SV *nsv, const char *name, I32 namlen);
    int		(*svt_dup)	(pTHX_ MAGIC *mg, CLONE_PARAMS *param);
    int		(*svt_local)(pTHX_ SV *nsv, MAGIC *mg);
};

struct magic {
    MAGIC*	mg_moremagic;
    MGVTBL*	mg_virtual;	/* pointer to magic functions */
    U16		mg_private;
    char	mg_type;
    U8		mg_flags;
    SSize_t	mg_len;
    SV*		mg_obj;
    char*	mg_ptr;
};

#define MGf_TAINTEDDIR 1        /* PERL_MAGIC_envelem only */
#define MGf_MINMATCH   1        /* PERL_MAGIC_regex_global only */
#define MGf_REQUIRE_GV 1        /* PERL_MAGIC_checkcall only */
#define MGf_REFCOUNTED 2
#define MGf_GSKIP      4	/* skip further GETs until after next SET */
#define MGf_COPY       8	/* has an svt_copy  MGVTBL entry */
#define MGf_DUP     0x10 	/* has an svt_dup   MGVTBL entry */
#define MGf_LOCAL   0x20	/* has an svt_local MGVTBL entry */
#define MGf_BYTES   0x40        /* PERL_MAGIC_regex_global only */
#define MGf_PERSIST    0x80     /* PERL_MAGIC_lvref only */

#define MgTAINTEDDIR(mg)	(mg->mg_flags & MGf_TAINTEDDIR)
#define MgTAINTEDDIR_on(mg)	(mg->mg_flags |= MGf_TAINTEDDIR)
#define MgTAINTEDDIR_off(mg)	(mg->mg_flags &= ~MGf_TAINTEDDIR)

#define MgPV(mg,lp)		((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ?   \
				 SvPV(MUTABLE_SV((mg)->mg_ptr),lp) :	\
				 (mg)->mg_ptr)
#define MgPV_const(mg,lp)	((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
				 SvPV_const(MUTABLE_SV((mg)->mg_ptr),lp) :   \
				 (const char*)(mg)->mg_ptr)
#define MgPV_nolen_const(mg)	(((((int)(mg)->mg_len)) == HEf_SVKEY) ?	\
				 SvPV_nolen_const(MUTABLE_SV((mg)->mg_ptr)) : \
				 (const char*)(mg)->mg_ptr)

#define SvTIED_mg(sv,how) (SvRMAGICAL(sv) ? mg_find((sv),(how)) : NULL)
#define SvTIED_obj(sv,mg) \
    ((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))

#if defined(PERL_CORE) || defined(PERL_EXT)
# define MgBYTEPOS(mg,sv,pv,len) S_MgBYTEPOS(aTHX_ mg,sv,pv,len)
/* assumes get-magic and stringification have already occurred */
# define MgBYTEPOS_set(mg,sv,pv,off) (			 \
    assert_((mg)->mg_type == PERL_MAGIC_regex_global)	  \
    SvPOK(sv) && (!SvGMAGICAL(sv) || sv_only_taint_gmagic(sv))  \
	? (mg)->mg_len = (off), (mg)->mg_flags |= MGf_BYTES \
	: ((mg)->mg_len = DO_UTF8(sv)			     \
	    ? (SSize_t)utf8_length((U8 *)(pv), (U8 *)(pv)+(off)) \
	    : (SSize_t)(off),					  \
	   (mg)->mg_flags &= ~MGf_BYTES))
#endif

#define whichsig(pv) whichsig_pv(pv)

/*
 * ex: set ts=8 sts=4 sw=4 et:
 */