Function test_ready

test/epwait.c:21–61

static atomic_bool keep_running;

static int test_ready(struct io_uring *ring, int efd)
{
	struct io_uring_sqe *sqe;
	struct io_uring_cqe *cqe;
	struct epoll_event out[2];
	char tmp[16];
	int i, ret;

	for (i = 0; i < 2; i++) {
		ret = write(fds[i][1], "foo", 3);
		if (ret < 0)
			perror("write");
	}

	memset(out, 0, sizeof(out));
	sqe = io_uring_get_sqe(ring);
	io_uring_prep_epoll_wait(sqe, efd, out, 2, 0);
	sqe->user_data = 1;
	io_uring_submit(ring);

	for (i = 0; i < 1; i++) {
		ret = io_uring_wait_cqe(ring, &cqe);
		if (ret) {
			fprintf(stderr, "wait_cqe ret = %d\n", ret);
			return 1;
		}
		if (cqe->res == -EINVAL) {
			no_epoll_wait = 1;
			return 0;
		}
		io_uring_cqe_seen(ring, cqe);
	}

	for (i = 0; i < 2; i++) {
		ret = read(out[i].data.fd, tmp, sizeof(tmp));
		if (ret < 0)
			perror("read");
	}

	return 0;
}

static int test_not_ready(struct io_uring *ring, int efd)
{