: VALUE rb_data_object_alloc(VALUE klass, void *datap, RUBY_DATA_FUNC dmark, RUBY_DATA_FUNC dfree)
    datap åפ륪֥Ȥ֤ޤ
    Υ饹 klass Ȥʤꡢdatap ޡȤ
    dmark Ȥ dfree Ȥ褦ˤʤޤ

