get_last_socket_error_is_eintr
} while (pres == -1 && get_last_socket_error_is_eintr());
} while (pres == -1 && get_last_socket_error_is_eintr());
} while (rc == -1 && get_last_socket_error_is_eintr());
} while (rc == -1 && get_last_socket_error_is_eintr());
while (wr < 0 && get_last_socket_error_is_eintr());
|| (rd < 0 && get_last_socket_error_is_eintr()));