/* SPDX-License-Identifier: MIT */

/*

 * Description: run various nop tests

 *

 */

#include <errno.h>

#include <stdio.h>

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

#include <fcntl.h>

#include <sys/poll.h>

#include <sys/eventfd.h>

#include "liburing.h"

int main(int argc, char *argv[])

{

	struct io_uring_params p = {};

	struct io_uring ring1, ring2;

	struct io_uring_sqe *sqe;

	int ret, evfd1, evfd2;

	if (argc > 1)

		return 0;

	ret = io_uring_queue_init_params(8, &ring1, &p);

	if (ret) {

		fprintf(stderr, "ring setup failed: %d\n", ret);

		return 1;

	}

	if (!(p.features & IORING_FEAT_CUR_PERSONALITY)) {

		fprintf(stdout, "Skipping\n");

		return 0;

	}

	ret = io_uring_queue_init(8, &ring2, 0);

	if (ret) {

		fprintf(stderr, "ring setup failed: %d\n", ret);

		return 1;

	}

	evfd1 = eventfd(0, EFD_CLOEXEC);

	if (evfd1 < 0) {

		perror("eventfd");

		return 1;

	}

	evfd2 = eventfd(0, EFD_CLOEXEC);

	if (evfd2 < 0) {

		perror("eventfd");

		return 1;

	}

	ret = io_uring_register_eventfd(&ring1, evfd1);

	if (ret) {

		fprintf(stderr, "failed to register evfd: %d\n", ret);

		return 1;

	}

	ret = io_uring_register_eventfd(&ring2, evfd2);

	if (ret) {

		fprintf(stderr, "failed to register evfd: %d\n", ret);

		return 1;

	}

	sqe = io_uring_get_sqe(&ring1;;

	io_uring_prep_poll_add(sqe, evfd2, POLLIN);

	sqe->user_data = 1;

	sqe = io_uring_get_sqe(&ring2;;

	io_uring_prep_poll_add(sqe, evfd1, POLLIN);

	sqe->user_data = 1;

	ret = io_uring_submit(&ring1;;

	if (ret != 1) {

		fprintf(stderr, "submit: %d\n", ret);

		return 1;

	}

	ret = io_uring_submit(&ring2;;

	if (ret != 1) {

		fprintf(stderr, "submit: %d\n", ret);

		return 1;

	}

	sqe = io_uring_get_sqe(&ring1;;

	io_uring_prep_nop(sqe);

	sqe->user_data = 3;

	ret = io_uring_submit(&ring1;;

	if (ret != 1) {

		fprintf(stderr, "submit: %d\n", ret);

		return 1;

	}

	return 0;

}