lio_kqueue_test.c revision 293140
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: stable/10/tests/sys/aio/lio_kqueue_test.c 293140 2016-01-04 07:02:48Z ngie $ 26 */ 27 28/* 29 * Note: it is a good idea to run this against a physical drive to 30 * exercise the physio fast path (ie. lio_kqueue /dev/<something safe>) 31 * This will ensure op's counting is correct. It is currently broken. 32 * 33 * Also note that LIO & kqueue is not implemented in FreeBSD yet, LIO 34 * is also broken with respect to op's and some paths. 35 * 36 * A patch to make this work is at: 37 * http://www.ambrisko.com/doug/listio_kqueue/listio_kqueue.patch 38 */ 39 40#include <sys/types.h> 41#include <sys/event.h> 42#include <sys/time.h> 43#include <aio.h> 44#include <fcntl.h> 45#include <err.h> 46#include <errno.h> 47#include <stdio.h> 48#include <stdlib.h> 49#include <string.h> 50#include <unistd.h> 51 52#include "freebsd_test_suite/macros.h" 53 54#define PATH_TEMPLATE "aio.XXXXXXXXXX" 55 56#define LIO_MAX 5 57#define MAX_IOCBS LIO_MAX * 16 58#define MAX_RUNS 300 59 60int 61main(int argc, char *argv[]) 62{ 63 int fd; 64 struct aiocb *iocb[MAX_IOCBS]; 65 struct aiocb **lio[LIO_MAX], **kq_lio; 66 int i, result, run, error, j, k; 67 char buffer[32768]; 68 int kq; 69 struct kevent ke, kq_returned; 70 struct timespec ts; 71 struct sigevent sig; 72 time_t time1, time2; 73 char *file, pathname[sizeof(PATH_TEMPLATE)]; 74 int tmp_file = 0, failed = 0; 75 76 PLAIN_REQUIRE_KERNEL_MODULE("aio", 0); 77 78 kq = kqueue(); 79 if (kq < 0) 80 err(1, "kqeueue(2) failed"); 81 82 if (argc == 1) { 83 strcpy(pathname, PATH_TEMPLATE); 84 fd = mkstemp(pathname); 85 file = pathname; 86 tmp_file = 1; 87 } else { 88 file = argv[1]; 89 fd = open(file, O_RDWR|O_CREAT, 0666); 90 } 91 if (fd < 0) 92 err(1, "can't open %s", argv[1]); 93 94#ifdef DEBUG 95 printf("Hello kq %d fd %d\n", kq, fd); 96#endif 97 98 for (run = 0; run < MAX_RUNS; run++) { 99#ifdef DEBUG 100 printf("Run %d\n", run); 101#endif 102 for (j = 0; j < LIO_MAX; j++) { 103 lio[j] = 104 malloc(sizeof(struct aiocb *) * MAX_IOCBS/LIO_MAX); 105 for (i = 0; i < MAX_IOCBS / LIO_MAX; i++) { 106 k = (MAX_IOCBS / LIO_MAX * j) + i; 107 lio[j][i] = iocb[k] = 108 calloc(1, sizeof(struct aiocb)); 109 iocb[k]->aio_nbytes = sizeof(buffer); 110 iocb[k]->aio_buf = buffer; 111 iocb[k]->aio_fildes = fd; 112 iocb[k]->aio_offset 113 = iocb[k]->aio_nbytes * k * (run + 1); 114 115#ifdef DEBUG 116 printf("hello iocb[k] %d\n", 117 iocb[k]->aio_offset); 118#endif 119 iocb[k]->aio_lio_opcode = LIO_WRITE; 120 } 121 sig.sigev_notify_kqueue = kq; 122 sig.sigev_value.sival_ptr = lio[j]; 123 sig.sigev_notify = SIGEV_KEVENT; 124 time(&time1); 125 result = lio_listio(LIO_NOWAIT, lio[j], 126 MAX_IOCBS / LIO_MAX, &sig); 127 error = errno; 128 time(&time2); 129#ifdef DEBUG 130 printf("Time %d %d %d result -> %d\n", 131 time1, time2, time2-time1, result); 132#endif 133 if (result != 0) { 134 errno = error; 135 err(1, "FAIL: Result %d iteration %d\n", 136 result, j); 137 } 138#ifdef DEBUG 139 printf("write %d is at %p\n", j, lio[j]); 140#endif 141 } 142 143 for (i = 0; i < LIO_MAX; i++) { 144 for (j = LIO_MAX - 1; j >=0; j--) { 145 if (lio[j]) 146 break; 147 } 148 149 for (;;) { 150 bzero(&ke, sizeof(ke)); 151 bzero(&kq_returned, sizeof(ke)); 152 ts.tv_sec = 0; 153 ts.tv_nsec = 1; 154#ifdef DEBUG 155 printf("FOO lio %d -> %p\n", j, lio[j]); 156#endif 157 EV_SET(&ke, (uintptr_t)lio[j], 158 EVFILT_LIO, EV_ONESHOT, 0, 0, iocb[j]); 159 result = kevent(kq, NULL, 0, 160 &kq_returned, 1, &ts); 161 error = errno; 162 if (result < 0) { 163 perror("kevent error: "); 164 } 165 kq_lio = kq_returned.udata; 166#ifdef DEBUG 167 printf("kevent %d %d errno %d return.ident %p " 168 "return.data %p return.udata %p %p\n", 169 i, result, error, 170 kq_returned.ident, kq_returned.data, 171 kq_returned.udata, 172 lio[j]); 173#endif 174 175 if (kq_lio) 176 break; 177#ifdef DEBUG 178 printf("Try again\n"); 179#endif 180 } 181 182#ifdef DEBUG 183 printf("lio %p\n", lio); 184#endif 185 186 for (j = 0; j < LIO_MAX; j++) { 187 if (lio[j] == kq_lio) 188 break; 189 } 190 if (j == LIO_MAX) 191 errx(1, "FAIL: "); 192 193#ifdef DEBUG 194 printf("Error Result for %d is %d\n", j, result); 195#endif 196 if (result < 0) { 197 printf("FAIL: run %d, operation %d result %d \n", run, LIO_MAX - i -1, result); 198 failed++; 199 } else 200 printf("PASS: run %d, operation %d result %d \n", run, LIO_MAX - i -1, result); 201 for (k = 0; k < MAX_IOCBS / LIO_MAX; k++) { 202 result = aio_return(kq_lio[k]); 203#ifdef DEBUG 204 printf("Return Resulto for %d %d is %d\n", j, k, result); 205#endif 206 if (result != sizeof(buffer)) { 207 printf("FAIL: run %d, operation %d sub-opt %d result %d (errno=%d) should be %zu\n", 208 run, LIO_MAX - i -1, k, result, errno, sizeof(buffer)); 209 } else { 210 printf("PASS: run %d, operation %d sub-opt %d result %d\n", 211 run, LIO_MAX - i -1, k, result); 212 } 213 } 214#ifdef DEBUG 215 printf("\n"); 216#endif 217 218 for (k = 0; k < MAX_IOCBS / LIO_MAX; k++) 219 free(lio[j][k]); 220 free(lio[j]); 221 lio[j] = NULL; 222 } 223 } 224#ifdef DEBUG 225 printf("Done\n"); 226#endif 227 228 if (tmp_file) 229 unlink(pathname); 230 231 if (failed) 232 errx(1, "FAIL: %d testcases failed", failed); 233 else 234 errx(0, "PASS: All\n"); 235 236} 237