size_t *ret_buffer_fill, size_t *ret_buffer_free, const data_set_t *ds,
const value_list_t *vl, int store_rates, size_t temp_size,
char const *const *http_attrs, size_t http_attrs_num, int data_ttl,
size_t *ret_buffer_fill, size_t *ret_buffer_free, const data_set_t *ds,
const value_list_t *vl, int store_rates, size_t temp_size,
char const *const *http_attrs, size_t http_attrs_num, int data_ttl,