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 51 #define PATH_TEMPLATE "aio.XXXXXXXXXX" 52 53 #define MAX_IOCBS 128 54 #define MAX_RUNS 300 55 /* #define DEBUG */ 56 57 int 58 main (int argc, char *argv[]) 59 { 60 struct aiocb *iocb[MAX_IOCBS], *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 cancel, error, failed = 0, fd, kq, pending, result, run; 66 int tmp_file = 0; 67 unsigned i, j; 68 69 PLAIN_REQUIRE_KERNEL_MODULE("aio", 0); 70 71 kq = kqueue(); 72 if (kq < 0) { 73 perror("No kqeueue\n"); 74 exit(1); 75 } 76 77 if (argc == 1) { 78 strcpy(pathname, PATH_TEMPLATE); 79 fd = mkstemp(pathname); 80 file = pathname; 81 tmp_file = 1; 82 } else { 83 file = argv[1]; 84 fd = open(file, O_RDWR|O_CREAT, 0666); 85 } 86 if (fd == -1) 87 err(1, "Can't open %s\n", file); 88 89 for (run = 0; run < MAX_RUNS; run++){ 90 #ifdef DEBUG 91 printf("Run %d\n", run); 92 #endif 93 for (i = 0; i < nitems(iocb); i++) { 94 iocb[i] = (struct aiocb *)calloc(1, 95 sizeof(struct aiocb)); 96 if (iocb[i] == NULL) 97 err(1, "calloc"); 98 } 99 100 pending = 0; 101 for (i = 0; i < nitems(iocb); i++) { 102 pending++; 103 iocb[i]->aio_nbytes = sizeof(buffer); 104 iocb[i]->aio_buf = buffer; 105 iocb[i]->aio_fildes = fd; 106 iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run; 107 108 iocb[i]->aio_sigevent.sigev_notify_kqueue = kq; 109 iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i]; 110 iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT; 111 112 result = aio_write(iocb[i]); 113 if (result != 0) { 114 perror("aio_write"); 115 printf("Result %d iteration %d\n", result, i); 116 exit(1); 117 } 118 #ifdef DEBUG 119 printf("WRITE %d is at %p\n", i, iocb[i]); 120 #endif 121 result = rand(); 122 if (result < RAND_MAX/32) { 123 if (result > RAND_MAX/64) { 124 result = aio_cancel(fd, iocb[i]); 125 #ifdef DEBUG 126 printf("Cancel %d %p result %d\n", i, iocb[i], result); 127 #endif 128 if (result == AIO_CANCELED) { 129 aio_return(iocb[i]); 130 iocb[i] = NULL; 131 pending--; 132 } 133 } 134 } 135 } 136 cancel = nitems(iocb) - pending; 137 138 i = 0; 139 while (pending) { 140 141 for (;;) { 142 143 bzero(&ke, sizeof(ke)); 144 bzero(&kq_returned, sizeof(ke)); 145 ts.tv_sec = 0; 146 ts.tv_nsec = 1; 147 result = kevent(kq, NULL, 0, 148 &kq_returned, 1, &ts); 149 error = errno; 150 if (result < 0) 151 perror("kevent error: "); 152 kq_iocb = kq_returned.udata; 153 #ifdef DEBUG 154 printf("kevent %d %d errno %d return.ident %p " 155 "return.data %p return.udata %p %p\n", 156 i, result, error, 157 kq_returned.ident, kq_returned.data, 158 kq_returned.udata, 159 kq_iocb); 160 #endif 161 162 if (kq_iocb) 163 break; 164 #ifdef DEBUG 165 printf("Try again left %d out of %d %d\n", 166 pending, nitems(iocb), cancel); 167 #endif 168 } 169 170 for (j = 0; j < nitems(iocb) && iocb[j] != kq_iocb; 171 j++) ; 172 #ifdef DEBUG 173 printf("kq_iocb %p\n", kq_iocb); 174 175 printf("Error Result for %d is %d pending %d\n", 176 j, result, pending); 177 #endif 178 result = aio_return(kq_iocb); 179 #ifdef DEBUG 180 printf("Return Result for %d is %d\n\n", j, result); 181 #endif 182 if (result != sizeof(buffer)) { 183 printf("FAIL: run %d, operation %d, result %d " 184 " (errno=%d) should be %zu\n", run, pending, 185 result, errno, sizeof(buffer)); 186 failed++; 187 } else 188 printf("PASS: run %d, left %d\n", run, 189 pending - 1); 190 191 free(kq_iocb); 192 iocb[j] = NULL; 193 pending--; 194 i++; 195 } 196 197 for (i = 0; i < nitems(iocb); i++) 198 free(iocb[i]); 199 200 } 201 202 if (tmp_file) 203 unlink(pathname); 204 205 if (failed != 0) 206 printf("FAIL: %d tests failed\n", failed); 207 else 208 printf("PASS: All tests passed\n"); 209 210 exit (failed == 0 ? 0 : 1); 211 } 212