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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
|
#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Description: test io_uring poll handling
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <pthread.h>
#include <sys/epoll.h>
#include "liburing.h"
#include "helpers.h"
struct thread_data {
struct io_uring *ring;
int fd;
int events;
const char *test;
int out[2];
};
static void *epoll_wait_fn(void *data)
{
struct thread_data *td = data;
struct epoll_event ev;
if (epoll_wait(td->fd, &ev, 1, -1) < 0) {
perror("epoll_wait");
goto err;
}
return NULL;
err:
return (void *) 1;
}
static void *iou_poll(void *data)
{
struct thread_data *td = data;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
int ret;
sqe = io_uring_get_sqe(td->ring);
io_uring_prep_poll_add(sqe, td->fd, td->events);
ret = io_uring_submit(td->ring);
if (ret != 1) {
fprintf(stderr, "submit got %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(td->ring, &cqe);
if (ret) {
fprintf(stderr, "wait_cqe: %d\n", ret);
goto err;
}
td->out[0] = cqe->res & 0x3f;
io_uring_cqe_seen(td->ring, cqe);
return NULL;
err:
return (void *) 1;
}
static void *poll_pipe(void *data)
{
struct thread_data *td = data;
struct pollfd pfd;
int ret;
pfd.fd = td->fd;
pfd.events = td->events;
ret = poll(&pfd, 1, -1);
if (ret < 0)
perror("poll");
td->out[1] = pfd.revents;
return NULL;
}
static int do_pipe_pollin_test(struct io_uring *ring)
{
struct thread_data td;
pthread_t threads[2];
int ret, pipe1[2];
char buf;
if (pipe(pipe1) < 0) {
perror("pipe");
return 1;
}
td.ring = ring;
td.fd = pipe1[0];
td.events = POLLIN;
td.test = __FUNCTION__;
pthread_create(&threads[1], NULL, iou_poll, &td);
pthread_create(&threads[0], NULL, poll_pipe, &td);
usleep(100000);
buf = 0x89;
ret = write(pipe1[1], &buf, sizeof(buf));
if (ret != sizeof(buf)) {
fprintf(stderr, "write failed: %d\n", ret);
return 1;
}
pthread_join(threads[0], NULL);
pthread_join(threads[1], NULL);
if (td.out[0] != td.out[1]) {
fprintf(stderr, "%s: res %x/%x differ\n", __FUNCTION__,
td.out[0], td.out[1]);
return 1;
}
return 0;
}
static int do_pipe_pollout_test(struct io_uring *ring)
{
struct thread_data td;
pthread_t threads[2];
int ret, pipe1[2];
char buf;
if (pipe(pipe1) < 0) {
perror("pipe");
return 1;
}
td.ring = ring;
td.fd = pipe1[1];
td.events = POLLOUT;
td.test = __FUNCTION__;
pthread_create(&threads[0], NULL, poll_pipe, &td);
pthread_create(&threads[1], NULL, iou_poll, &td);
usleep(100000);
buf = 0x89;
ret = write(pipe1[1], &buf, sizeof(buf));
if (ret != sizeof(buf)) {
fprintf(stderr, "write failed: %d\n", ret);
return 1;
}
pthread_join(threads[0], NULL);
pthread_join(threads[1], NULL);
if (td.out[0] != td.out[1]) {
fprintf(stderr, "%s: res %x/%x differ\n", __FUNCTION__,
td.out[0], td.out[1]);
return 1;
}
return 0;
}
static int do_fd_test(struct io_uring *ring, const char *fname, int events)
{
struct thread_data td;
pthread_t threads[2];
int fd;
fd = open(fname, O_RDONLY);
if (fd < 0) {
if (errno == EPERM || errno == EACCES)
return T_EXIT_SKIP;
perror("open");
return 1;
}
td.ring = ring;
td.fd = fd;
td.events = events;
td.test = __FUNCTION__;
pthread_create(&threads[0], NULL, poll_pipe, &td);
pthread_create(&threads[1], NULL, iou_poll, &td);
pthread_join(threads[0], NULL);
pthread_join(threads[1], NULL);
if (td.out[0] != td.out[1]) {
fprintf(stderr, "%s: res %x/%x differ\n", __FUNCTION__,
td.out[0], td.out[1]);
return 1;
}
return 0;
}
static int iou_epoll_ctl(struct io_uring *ring, int epfd, int fd,
struct epoll_event *ev)
{
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "Failed to get sqe\n");
return 1;
}
io_uring_prep_epoll_ctl(sqe, epfd, fd, EPOLL_CTL_ADD, ev);
ret = io_uring_submit(ring);
if (ret != 1) {
fprintf(stderr, "submit: %d\n", ret);
return 1;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret) {
fprintf(stderr, "wait_cqe: %d\n", ret);
return 1;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
}
static int do_test_epoll(struct io_uring *ring, int iou_epoll_add)
{
struct epoll_event ev;
struct thread_data td;
pthread_t threads[2];
int ret, pipe1[2];
char buf;
int fd;
fd = epoll_create1(0);
if (fd < 0) {
perror("epoll_create");
return 1;
}
if (pipe(pipe1) < 0) {
perror("pipe");
return 1;
}
ev.events = EPOLLIN;
ev.data.fd = pipe1[0];
if (!iou_epoll_add) {
if (epoll_ctl(fd, EPOLL_CTL_ADD, pipe1[0], &ev) < 0) {
perror("epoll_ctrl");
return 1;
}
} else {
ret = iou_epoll_ctl(ring, fd, pipe1[0], &ev);
if (ret == -EINVAL) {
fprintf(stdout, "epoll not supported, skipping\n");
return 0;
} else if (ret < 0) {
return 1;
}
}
td.ring = ring;
td.fd = fd;
td.events = POLLIN;
td.test = __FUNCTION__;
pthread_create(&threads[0], NULL, iou_poll, &td);
pthread_create(&threads[1], NULL, epoll_wait_fn, &td);
usleep(100000);
buf = 0x89;
ret = write(pipe1[1], &buf, sizeof(buf));
if (ret != sizeof(buf)) {
fprintf(stderr, "write failed: %d\n", ret);
return 1;
}
pthread_join(threads[0], NULL);
pthread_join(threads[1], NULL);
return 0;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
const char *fname;
int ret;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
ret = do_pipe_pollin_test(&ring);
if (ret) {
fprintf(stderr, "pipe pollin test failed\n");
return ret;
}
ret = do_pipe_pollout_test(&ring);
if (ret) {
fprintf(stderr, "pipe pollout test failed\n");
return ret;
}
ret = do_test_epoll(&ring, 0);
if (ret) {
fprintf(stderr, "epoll test 0 failed\n");
return ret;
}
ret = do_test_epoll(&ring, 1);
if (ret) {
fprintf(stderr, "epoll test 1 failed\n");
return ret;
}
if (argc > 1)
fname = argv[1];
else
fname = argv[0];
ret = do_fd_test(&ring, fname, POLLIN);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "fd test IN failed\n");
return ret;
}
ret = do_fd_test(&ring, fname, POLLOUT);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "fd test OUT failed\n");
return ret;
}
ret = do_fd_test(&ring, fname, POLLOUT | POLLIN);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "fd test IN|OUT failed\n");
return ret;
}
return 0;
}
|
