Function check

lib_acl/src/stdlib/sys/acl_sane_socketpair.c:60–101

# if defined(ACL_HAS_POLL)

static int check(ACL_SOCKET listener, ACL_SOCKET client, ACL_SOCKET result[2])
{
	int ret;
	struct pollfd fds[2];

	while (result[0] == ACL_SOCKET_INVALID || result[1] ==ACL_SOCKET_INVALID) {
		int i = 0;
		if (result[1] == ACL_SOCKET_INVALID) {
			fds[i].fd      = listener;
			fds[i].events  = POLLIN;
			fds[i].revents = 0;
			i++;
		}

		if (result[0] == ACL_SOCKET_INVALID) {
			fds[i].fd      = client;
			fds[i].events  = POLLOUT;
			fds[i].revents = 0;
		}

		ret = WSAPoll(fds, 2, 10000);
		if (ret < 0) {
			if (acl_last_error() == ACL_EINTR) {
				continue;
			}
			acl_msg_error("WSAPoll error: %s", acl_last_serror());
			return -1;
		} else if (ret == 0) {
			acl_msg_error("WSAPoll timeout: %s", acl_last_serror());
			return -1;
		}

		if ((fds[0].revents & POLLIN)) {
			result[1] = accept(listener, NULL, 0);
		}
		if ((fds[1].revents & POLLOUT)) {
			result[0] = client;
		}
	}

	return 0;
}

# else