281 /* the number of keys (including any placeholers) */
282 #define XHvTOTALKEYS(xhv)       ((xhv)->xhv_keys)

289 #define HvKEYS(hv)              HvUSEDKEYS(hv)
290 #define HvUSEDKEYS(hv)          (HvTOTALKEYS(hv) - HvPLACEHOLDERS_get(hv))


293 #define HvPLACEHOLDERS_get(hv)  (SvMAGIC(hv) ? Perl_hv_placeholders_get(aTHX_ (const HV *)hv) : 0)