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
|
/* SPDX-License-Identifier: MIT */
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include "liburing.h"
#include "helpers.h"
static void sig_alrm(int sig)
{
fprintf(stderr, "Timed out!\n");
exit(1);
}
int main(int argc, char *argv[])
{
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct io_uring_params p;
struct io_uring ring;
int ret, data;
if (argc > 1)
return 0;
signal(SIGALRM, sig_alrm);
memset(&p, 0, sizeof(p));
p.sq_thread_idle = 100;
p.flags = IORING_SETUP_SQPOLL;
ret = t_create_ring_params(4, &ring, &p);
if (ret == T_SETUP_SKIP)
return 0;
else if (ret < 0)
return 1;
/* make sure sq thread is sleeping at this point */
usleep(150000);
alarm(1);
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "sqe get failed\n");
return 1;
}
io_uring_prep_nop(sqe);
io_uring_sqe_set_data(sqe, (void *) (unsigned long) 42);
io_uring_submit_and_wait(&ring, 1);
ret = io_uring_peek_cqe(&ring, &cqe);
if (ret) {
fprintf(stderr, "cqe get failed\n");
return 1;
}
data = (unsigned long) io_uring_cqe_get_data(cqe);
if (data != 42) {
fprintf(stderr, "invalid data: %d\n", data);
return 1;
}
return 0;
}
|
