TYPEMAP
int64_t		T_IV
pid_t		T_IV
const char *	T_PV

glibtop *	O_OBJECT

OUTPUT
# The Perl object is blessed into 'CLASS', which should be a
# char* having the name of the package for the blessing.
O_OBJECT
	sv_setref_pv ($arg, CLASS, (void*)$var);

INPUT
O_OBJECT
	if (sv_isobject($arg) && (SvTYPE(SvRV($arg)) == SVt_PVMG))
		$var = ($type)SvIV((SV*)SvRV($arg));
	else {
		warn (\"${Package}::$func_name() -- \"
		      \"$var is not a blessed SV reference\");
		XSRETURN_UNDEF;
	}