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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
* Description: run various nop tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "../src/liburing.h"
static int test_single_nop(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
ret = io_uring_submit(ring);
if (ret <= 0) {
printf("sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
printf("wait completion %d\n", ret);
goto err;
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
static int test_barrier_nop(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
for (i = 0; i < 8; i++) {
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
if (i == 4)
sqe->flags = IOSQE_IO_DRAIN;
}
ret = io_uring_submit(ring);
if (ret < 8) {
printf("Submitted only %d\n", ret);
goto err;
} else if (ret < 0) {
printf("sqe submit failed: %d\n", ret);
goto err;
}
for (i = 0; i < 8; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
printf("wait completion %d\n", ret);
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
return 0;
err:
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
printf("ring setup failed\n");
return 1;
}
ret = test_single_nop(&ring);
if (ret) {
printf("test_single_nop failed\n");
return ret;
}
ret = test_barrier_nop(&ring);
if (ret) {
printf("test_barrier_nop failed\n");
return ret;
}
return 0;
}
|
