rocksdb_sys::rocksdb_approximate_sizes_cf

pub unsafe extern fn rocksdb_approximate_sizes_cf(db: *mut rocksdb_t, column_family: *mut rocksdb_column_family_handle_t, num_ranges: c_int, range_start_key: *const *const c_char, range_start_key_len: *const size_t, range_limit_key: *const *const c_char, range_limit_key_len: *const size_t, sizes: *mut uint64_t)