1 /*-
2 * Copyright (C) 2005 IronPort Systems, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28 /*
29 * Prerequisities:
30 * - AIO support must be compiled into the kernel (see sys/<arch>/NOTES for
31 * more details).
32 *
33 * Note: it is a good idea to run this against a physical drive to
34 * exercise the physio fast path (ie. aio_kqueue /dev/<something safe>)
35 */
36
37 #include <sys/types.h>
38 #include <sys/event.h>
39 #include <sys/time.h>
40 #include <aio.h>
41 #include <err.h>
42 #include <errno.h>
43 #include <fcntl.h>
44 #include <stdlib.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <unistd.h>
48
49 #include "freebsd_test_suite/macros.h"
50 #include "local.h"
51
52 #define PATH_TEMPLATE "aio.XXXXXXXXXX"
53
54 #define MAX_RUNS 300
55 /* #define DEBUG */
56
57 int
main(int argc,char * argv[])58 main (int argc, char *argv[])
59 {
60 struct aiocb **iocb, *kq_iocb;
61 char *file, pathname[sizeof(PATH_TEMPLATE)+1];
62 struct kevent ke, kq_returned;
63 struct timespec ts;
64 char buffer[32768];
65 int max_queue_per_proc;
66 size_t max_queue_per_proc_size;
67 #ifdef DEBUG
68 int cancel, error;
69 #endif
70 int failed = 0, fd, kq, pending, result, run;
71 int tmp_file = 0;
72 int i, j;
73
74 PLAIN_REQUIRE_KERNEL_MODULE("aio", 0);
75 PLAIN_REQUIRE_UNSAFE_AIO(0);
76
77 max_queue_per_proc_size = sizeof(max_queue_per_proc);
78 if (sysctlbyname("vfs.aio.max_aio_queue_per_proc",
79 &max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0)
80 err(1, "sysctlbyname");
81 iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*));
82 if (iocb == NULL)
83 err(1, "calloc");
84
85 kq = kqueue();
86 if (kq < 0) {
87 perror("No kqeueue\n");
88 exit(1);
89 }
90
91 if (argc == 1) {
92 strcpy(pathname, PATH_TEMPLATE);
93 fd = mkstemp(pathname);
94 file = pathname;
95 tmp_file = 1;
96 } else {
97 file = argv[1];
98 fd = open(file, O_RDWR|O_CREAT, 0666);
99 }
100 if (fd == -1)
101 err(1, "Can't open %s\n", file);
102
103 for (run = 0; run < MAX_RUNS; run++){
104 #ifdef DEBUG
105 printf("Run %d\n", run);
106 #endif
107 for (i = 0; i < max_queue_per_proc; i++) {
108 iocb[i] = (struct aiocb *)calloc(1,
109 sizeof(struct aiocb));
110 if (iocb[i] == NULL)
111 err(1, "calloc");
112 }
113
114 pending = 0;
115 for (i = 0; i < max_queue_per_proc; i++) {
116 pending++;
117 iocb[i]->aio_nbytes = sizeof(buffer);
118 iocb[i]->aio_buf = buffer;
119 iocb[i]->aio_fildes = fd;
120 iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run;
121
122 iocb[i]->aio_sigevent.sigev_notify_kqueue = kq;
123 iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i];
124 iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT;
125
126 result = aio_write(iocb[i]);
127 if (result != 0) {
128 perror("aio_write");
129 printf("Result %d iteration %d\n", result, i);
130 exit(1);
131 }
132 #ifdef DEBUG
133 printf("WRITE %d is at %p\n", i, iocb[i]);
134 #endif
135 result = rand();
136 if (result < RAND_MAX/32) {
137 if (result > RAND_MAX/64) {
138 result = aio_cancel(fd, iocb[i]);
139 #ifdef DEBUG
140 printf("Cancel %d %p result %d\n", i, iocb[i], result);
141 #endif
142 if (result == AIO_CANCELED) {
143 aio_return(iocb[i]);
144 iocb[i] = NULL;
145 pending--;
146 }
147 }
148 }
149 }
150 #ifdef DEBUG
151 cancel = max_queue_per_proc - pending;
152 #endif
153
154 i = 0;
155 while (pending) {
156
157 for (;;) {
158
159 bzero(&ke, sizeof(ke));
160 bzero(&kq_returned, sizeof(ke));
161 ts.tv_sec = 0;
162 ts.tv_nsec = 1;
163 result = kevent(kq, NULL, 0,
164 &kq_returned, 1, &ts);
165 #ifdef DEBUG
166 error = errno;
167 #endif
168 if (result < 0)
169 perror("kevent error: ");
170 kq_iocb = kq_returned.udata;
171 #ifdef DEBUG
172 printf("kevent %d %d errno %d return.ident %p "
173 "return.data %p return.udata %p %p"
174 " filter %d flags %#x fflags %#x\n",
175 i, result, error,
176 (void*)kq_returned.ident,
177 (void*)kq_returned.data,
178 kq_returned.udata,
179 kq_iocb,
180 kq_returned.filter,
181 kq_returned.flags,
182 kq_returned.fflags);
183 if (result > 0)
184 printf("\tsigev_notify_kevent_flags %#x\n",
185 ((struct aiocb*)(kq_returned.ident))->aio_sigevent.sigev_notify_kevent_flags);
186 #endif
187
188 if (kq_iocb)
189 break;
190 #ifdef DEBUG
191 printf("Try again left %d out of %d %d\n",
192 pending, max_queue_per_proc, cancel);
193 #endif
194 }
195
196 for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb;
197 j++) ;
198 #ifdef DEBUG
199 printf("kq_iocb %p\n", kq_iocb);
200
201 printf("Error Result for %d is %d pending %d\n",
202 j, result, pending);
203 #endif
204 result = aio_return(kq_iocb);
205 #ifdef DEBUG
206 printf("Return Result for %d is %d\n\n", j, result);
207 #endif
208 if (result != sizeof(buffer)) {
209 printf("FAIL: run %d, operation %d, result %d "
210 " (errno=%d) should be %zu\n", run, pending,
211 result, errno, sizeof(buffer));
212 failed++;
213 } else
214 printf("PASS: run %d, left %d\n", run,
215 pending - 1);
216
217 free(kq_iocb);
218 iocb[j] = NULL;
219 pending--;
220 i++;
221 }
222
223 for (i = 0; i < max_queue_per_proc; i++)
224 free(iocb[i]);
225
226 }
227
228 if (tmp_file)
229 unlink(pathname);
230
231 if (failed != 0)
232 printf("FAIL: %d tests failed\n", failed);
233 else
234 printf("PASS: All tests passed\n");
235
236 exit (failed == 0 ? 0 : 1);
237 }
238