blob: 2dd3ae65cf589553ed52ea3638b8eadb0b60505d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* SPDX-License-Identifier: MIT */
/*
* Description: Test poll against ring itself. A buggy kernel will end up
* having io_wq_* workers pending, as the circular reference
* will prevent full exit.
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <poll.h>
#include "liburing.h"
int main(int argc, char *argv[])
{
struct io_uring_sqe *sqe;
struct io_uring ring;
int ret;
if (argc > 1)
return 0;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
fprintf(stderr, "child: ring setup failed: %d\n", ret);
return 1;
}
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return 1;
}
io_uring_prep_poll_add(sqe, ring.ring_fd, POLLIN);
io_uring_sqe_set_data(sqe, sqe);
ret = io_uring_submit(&ring);
if (ret <= 0) {
fprintf(stderr, "child: sqe submit failed: %d\n", ret);
return 1;
}
return 0;
}
|
