1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Description: test CQ peek-batch
4 *
5 */
6 #include <errno.h>
7 #include <stdio.h>
8 #include <unistd.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <fcntl.h>
12
13 #include "liburing.h"
14
queue_n_nops(struct io_uring * ring,int n,int offset)15 static int queue_n_nops(struct io_uring *ring, int n, int offset)
16 {
17 struct io_uring_sqe *sqe;
18 int i, ret;
19
20 for (i = 0; i < n; i++) {
21 sqe = io_uring_get_sqe(ring);
22 if (!sqe) {
23 printf("get sqe failed\n");
24 goto err;
25 }
26
27 io_uring_prep_nop(sqe);
28 sqe->user_data = i + offset;
29 }
30
31 ret = io_uring_submit(ring);
32 if (ret < n) {
33 printf("Submitted only %d\n", ret);
34 goto err;
35 } else if (ret < 0) {
36 printf("sqe submit failed: %d\n", ret);
37 goto err;
38 }
39
40 return 0;
41 err:
42 return 1;
43 }
44
45 #define CHECK_BATCH(ring, got, cqes, count, expected) do {\
46 got = io_uring_peek_batch_cqe((ring), cqes, count);\
47 if (got != expected) {\
48 printf("Got %d CQs, expected %d\n", got, expected);\
49 goto err;\
50 }\
51 } while(0)
52
main(int argc,char * argv[])53 int main(int argc, char *argv[])
54 {
55 struct io_uring_cqe *cqes[8];
56 struct io_uring ring;
57 int ret, i;
58 unsigned got;
59
60 if (argc > 1)
61 return 0;
62
63 ret = io_uring_queue_init(4, &ring, 0);
64 if (ret) {
65 printf("ring setup failed\n");
66 return 1;
67
68 }
69
70 CHECK_BATCH(&ring, got, cqes, 4, 0);
71 if (queue_n_nops(&ring, 4, 0))
72 goto err;
73
74 CHECK_BATCH(&ring, got, cqes, 4, 4);
75 for (i=0;i<4;i++) {
76 if (i != cqes[i]->user_data) {
77 printf("Got user_data %" PRIu64 ", expected %d\n",
78 (uint64_t) cqes[i]->user_data, i);
79 goto err;
80 }
81 }
82
83 if (queue_n_nops(&ring, 4, 4))
84 goto err;
85
86 io_uring_cq_advance(&ring, 4);
87 CHECK_BATCH(&ring, got, cqes, 4, 4);
88 for (i=0;i<4;i++) {
89 if (i + 4 != cqes[i]->user_data) {
90 printf("Got user_data %" PRIu64 ", expected %d\n",
91 (uint64_t) cqes[i]->user_data, i + 4);
92 goto err;
93 }
94 }
95
96 io_uring_cq_advance(&ring, 8);
97 io_uring_queue_exit(&ring);
98 return 0;
99 err:
100 io_uring_queue_exit(&ring);
101 return 1;
102 }
103