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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* SPDX-License-Identifier: MIT */
/*
* Description: Check to see if wait_nr is being honored.
*/
#include <stdio.h>
#include "liburing.h"
int main(int argc, char *argv[])
{
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct io_uring ring;
int ret;
struct __kernel_timespec ts = {
.tv_sec = 0,
.tv_nsec = 10000000
};
if (argc > 1)
return 0;
if (io_uring_queue_init(4, &ring, 0) != 0) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
/*
* First, submit the timeout sqe so we can actually finish the test
* if everything is in working order.
*/
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return 1;
}
io_uring_prep_timeout(sqe, &ts, (unsigned)-1, 0);
ret = io_uring_submit(&ring);
if (ret != 1) {
fprintf(stderr, "Got submit %d, expected 1\n", ret);
return 1;
}
/*
* Next, submit a nop and wait for two events. If everything is working
* as it should, we should be waiting for more than a millisecond and we
* should see two cqes. Otherwise, execution continues immediately
* and we see only one cqe.
*/
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return 1;
}
io_uring_prep_nop(sqe);
ret = io_uring_submit_and_wait(&ring, 2);
if (ret != 1) {
fprintf(stderr, "Got submit %d, expected 1\n", ret);
return 1;
}
if (io_uring_peek_cqe(&ring, &cqe) != 0) {
fprintf(stderr, "Unable to peek cqe!\n");
return 1;
}
io_uring_cqe_seen(&ring, cqe);
if (io_uring_peek_cqe(&ring, &cqe) != 0) {
fprintf(stderr, "Unable to peek cqe!\n");
return 1;
}
io_uring_queue_exit(&ring);
return 0;
}
|
