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/stat.h> 40 #include <sys/time.h> 41 #include <aio.h> 42 #include <err.h> 43 #include <errno.h> 44 #include <fcntl.h> 45 #include <stdlib.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 #include "freebsd_test_suite/macros.h" 51 #include "local.h" 52 53 #define PATH_TEMPLATE "aio.XXXXXXXXXX" 54 55 #define MAX_RUNS 300 56 /* #define DEBUG */ 57 58 int 59 main (int argc, char *argv[]) 60 { 61 struct aiocb **iocb, *kq_iocb; 62 char *file, pathname[sizeof(PATH_TEMPLATE)+1]; 63 struct kevent ke, kq_returned; 64 struct timespec ts; 65 char buffer[32768]; 66 int max_queue_per_proc; 67 size_t max_queue_per_proc_size; 68 #ifdef DEBUG 69 int cancel, error; 70 #endif 71 int failed = 0, fd, kq, pending, result, run; 72 int tmp_file = 0; 73 int i, j; 74 75 PLAIN_REQUIRE_KERNEL_MODULE("aio", 0); 76 PLAIN_REQUIRE_UNSAFE_AIO(0); 77 78 max_queue_per_proc_size = sizeof(max_queue_per_proc); 79 if (sysctlbyname("vfs.aio.max_aio_queue_per_proc", 80 &max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0) 81 err(1, "sysctlbyname"); 82 iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*)); 83 if (iocb == NULL) 84 err(1, "calloc"); 85 86 kq = kqueue(); 87 if (kq < 0) { 88 perror("No kqeueue\n"); 89 exit(1); 90 } 91 92 if (argc == 1) { 93 strcpy(pathname, PATH_TEMPLATE); 94 umask(0077); 95 fd = mkstemp(pathname); 96 file = pathname; 97 tmp_file = 1; 98 } else { 99 file = argv[1]; 100 fd = open(file, O_RDWR|O_CREAT, 0666); 101 } 102 if (fd == -1) 103 err(1, "Can't open %s\n", file); 104 105 for (run = 0; run < MAX_RUNS; run++){ 106 #ifdef DEBUG 107 printf("Run %d\n", run); 108 #endif 109 for (i = 0; i < max_queue_per_proc; i++) { 110 iocb[i] = (struct aiocb *)calloc(1, 111 sizeof(struct aiocb)); 112 if (iocb[i] == NULL) 113 err(1, "calloc"); 114 } 115 116 pending = 0; 117 for (i = 0; i < max_queue_per_proc; i++) { 118 pending++; 119 iocb[i]->aio_nbytes = sizeof(buffer); 120 iocb[i]->aio_buf = buffer; 121 iocb[i]->aio_fildes = fd; 122 iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run; 123 124 iocb[i]->aio_sigevent.sigev_notify_kqueue = kq; 125 iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i]; 126 iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT; 127 128 result = aio_write(iocb[i]); 129 if (result != 0) { 130 perror("aio_write"); 131 printf("Result %d iteration %d\n", result, i); 132 exit(1); 133 } 134 #ifdef DEBUG 135 printf("WRITE %d is at %p\n", i, iocb[i]); 136 #endif 137 result = rand(); 138 if (result < RAND_MAX/32) { 139 if (result > RAND_MAX/64) { 140 result = aio_cancel(fd, iocb[i]); 141 #ifdef DEBUG 142 printf("Cancel %d %p result %d\n", i, iocb[i], result); 143 #endif 144 if (result == AIO_CANCELED) { 145 aio_return(iocb[i]); 146 iocb[i] = NULL; 147 pending--; 148 } 149 } 150 } 151 } 152 #ifdef DEBUG 153 cancel = max_queue_per_proc - pending; 154 #endif 155 156 i = 0; 157 while (pending) { 158 159 for (;;) { 160 161 bzero(&ke, sizeof(ke)); 162 bzero(&kq_returned, sizeof(ke)); 163 ts.tv_sec = 0; 164 ts.tv_nsec = 1; 165 result = kevent(kq, NULL, 0, 166 &kq_returned, 1, &ts); 167 #ifdef DEBUG 168 error = errno; 169 #endif 170 if (result < 0) 171 perror("kevent error: "); 172 kq_iocb = kq_returned.udata; 173 #ifdef DEBUG 174 printf("kevent %d %d errno %d return.ident %p " 175 "return.data %p return.udata %p %p" 176 " filter %d flags %#x fflags %#x\n", 177 i, result, error, 178 (void*)kq_returned.ident, 179 (void*)kq_returned.data, 180 kq_returned.udata, 181 kq_iocb, 182 kq_returned.filter, 183 kq_returned.flags, 184 kq_returned.fflags); 185 if (result > 0) 186 printf("\tsigev_notify_kevent_flags %#x\n", 187 ((struct aiocb*)(kq_returned.ident))->aio_sigevent.sigev_notify_kevent_flags); 188 #endif 189 190 if (kq_iocb) 191 break; 192 #ifdef DEBUG 193 printf("Try again left %d out of %d %d\n", 194 pending, max_queue_per_proc, cancel); 195 #endif 196 } 197 198 for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb; 199 j++) ; 200 #ifdef DEBUG 201 printf("kq_iocb %p\n", kq_iocb); 202 203 printf("Error Result for %d is %d pending %d\n", 204 j, result, pending); 205 #endif 206 result = aio_return(kq_iocb); 207 #ifdef DEBUG 208 printf("Return Result for %d is %d\n\n", j, result); 209 #endif 210 if (result != sizeof(buffer)) { 211 printf("FAIL: run %d, operation %d, result %d " 212 " (errno=%d) should be %zu\n", run, pending, 213 result, errno, sizeof(buffer)); 214 failed++; 215 } else 216 printf("PASS: run %d, left %d\n", run, 217 pending - 1); 218 219 free(kq_iocb); 220 iocb[j] = NULL; 221 pending--; 222 i++; 223 } 224 225 for (i = 0; i < max_queue_per_proc; i++) 226 free(iocb[i]); 227 228 } 229 230 if (tmp_file) 231 unlink(pathname); 232 233 if (failed != 0) 234 printf("FAIL: %d tests failed\n", failed); 235 else 236 printf("PASS: All tests passed\n"); 237 238 exit (failed == 0 ? 0 : 1); 239 } 240