aio_kqueue_test.c revision 218938
1142971Sambrisko/*- 2142971Sambrisko * Copyright (C) 2005 IronPort Systems, Inc. All rights reserved. 3142971Sambrisko * 4142971Sambrisko * Redistribution and use in source and binary forms, with or without 5142971Sambrisko * modification, are permitted provided that the following conditions 6142971Sambrisko * are met: 7142971Sambrisko * 1. Redistributions of source code must retain the above copyright 8142971Sambrisko * notice, this list of conditions and the following disclaimer. 9142971Sambrisko * 2. Redistributions in binary form must reproduce the above copyright 10142971Sambrisko * notice, this list of conditions and the following disclaimer in the 11142971Sambrisko * documentation and/or other materials provided with the distribution. 12142971Sambrisko * 13142971Sambrisko * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14142971Sambrisko * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15142971Sambrisko * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16142971Sambrisko * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17142971Sambrisko * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18142971Sambrisko * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19142971Sambrisko * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20142971Sambrisko * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21142971Sambrisko * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22142971Sambrisko * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23142971Sambrisko * SUCH DAMAGE. 24142971Sambrisko * 25142971Sambrisko * $FreeBSD: head/tools/regression/aio/kqueue/aio_kqueue.c 218938 2011-02-22 05:13:26Z miwi $ 26142971Sambrisko */ 27142971Sambrisko 28142971Sambrisko/* 29218938Smiwi * Prerequisities: 30218938Smiwi * - AIO support must be compiled into the kernel (see sys/<arch>/NOTES for 31218938Smiwi * more details). 32218938Smiwi * 33142971Sambrisko * Note: it is a good idea to run this against a physical drive to 34142971Sambrisko * exercise the physio fast path (ie. aio_kqueue /dev/<something safe>) 35142971Sambrisko */ 36142971Sambrisko 37218938Smiwi#include <sys/types.h> 38218938Smiwi#include <sys/event.h> 39218938Smiwi#include <sys/time.h> 40142971Sambrisko#include <aio.h> 41218938Smiwi#include <err.h> 42218938Smiwi#include <errno.h> 43142971Sambrisko#include <fcntl.h> 44142971Sambrisko#include <stdlib.h> 45142971Sambrisko#include <stdio.h> 46218938Smiwi#include <string.h> 47142971Sambrisko#include <unistd.h> 48142971Sambrisko 49142971Sambrisko#define PATH_TEMPLATE "/tmp/aio.XXXXXXXXXX" 50142971Sambrisko 51142971Sambrisko#define MAX 128 52142971Sambrisko#define MAX_RUNS 300 53142971Sambrisko/* #define DEBUG */ 54142971Sambrisko 55218938Smiwiint 56218938Smiwimain (int argc, char *argv[]) 57218938Smiwi{ 58142971Sambrisko int fd; 59142971Sambrisko struct aiocb *iocb[MAX], *kq_iocb; 60142971Sambrisko int i, result, run, error, j; 61142971Sambrisko char buffer[32768]; 62142971Sambrisko int kq = kqueue(); 63142971Sambrisko struct kevent ke, kq_returned; 64142971Sambrisko struct timespec ts; 65142971Sambrisko int cancel, pending, tmp_file = 0, failed = 0; 66218938Smiwi char *file, pathname[sizeof(PATH_TEMPLATE)+1]; 67142971Sambrisko 68142971Sambrisko if (kq < 0) { 69142971Sambrisko perror("No kqeueue\n"); 70142971Sambrisko exit(1); 71142971Sambrisko } 72142971Sambrisko 73142971Sambrisko if (argc == 1) { 74142971Sambrisko strcpy(pathname, PATH_TEMPLATE); 75142971Sambrisko fd = mkstemp(pathname); 76142971Sambrisko file = pathname; 77142971Sambrisko tmp_file = 1; 78142971Sambrisko } else { 79142971Sambrisko file = argv[1]; 80142971Sambrisko fd = open(file, O_RDWR|O_CREAT, 0666); 81142971Sambrisko } 82218938Smiwi if (fd == -1) 83218938Smiwi err(1, "Can't open %s\n", file); 84142971Sambrisko 85142971Sambrisko for (run = 0; run < MAX_RUNS; run++){ 86142971Sambrisko#ifdef DEBUG 87142971Sambrisko printf("Run %d\n", run); 88142971Sambrisko#endif 89218938Smiwi for (i = 0; i < MAX; i++) { 90218938Smiwi iocb[i] = (struct aiocb *)calloc(1, 91218938Smiwi sizeof(struct aiocb)); 92218938Smiwi if (iocb[i] == NULL) 93218938Smiwi err(1, "calloc"); 94142971Sambrisko } 95142971Sambrisko 96142971Sambrisko pending = 0; 97218938Smiwi for (i = 0; i < MAX; i++) { 98142971Sambrisko pending++; 99142971Sambrisko iocb[i]->aio_nbytes = sizeof(buffer); 100142971Sambrisko iocb[i]->aio_buf = buffer; 101142971Sambrisko iocb[i]->aio_fildes = fd; 102142971Sambrisko iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run; 103142971Sambrisko 104142971Sambrisko iocb[i]->aio_sigevent.sigev_notify_kqueue = kq; 105154668Sdavidxu iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i]; 106142971Sambrisko iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT; 107142971Sambrisko 108142971Sambrisko result = aio_write(iocb[i]); 109142971Sambrisko if (result != 0) { 110142971Sambrisko perror("aio_write"); 111218938Smiwi printf("Result %d iteration %d\n", result, i); 112142971Sambrisko exit(1); 113142971Sambrisko } 114142971Sambrisko#ifdef DEBUG 115142971Sambrisko printf("WRITE %d is at %p\n", i, iocb[i]); 116142971Sambrisko#endif 117142971Sambrisko result = rand(); 118142971Sambrisko if (result < RAND_MAX/32) { 119142971Sambrisko if (result > RAND_MAX/64) { 120142971Sambrisko result = aio_cancel(fd, iocb[i]); 121142971Sambrisko#ifdef DEBUG 122142971Sambrisko printf("Cancel %d %p result %d\n", i, iocb[i], result); 123142971Sambrisko#endif 124142971Sambrisko if (result == AIO_CANCELED) { 125142971Sambrisko aio_return(iocb[i]); 126218938Smiwi iocb[i] = NULL; 127142971Sambrisko pending--; 128142971Sambrisko } 129142971Sambrisko } 130142971Sambrisko } 131142971Sambrisko } 132142971Sambrisko cancel = MAX - pending; 133142971Sambrisko 134142971Sambrisko i = 0; 135218938Smiwi while (pending) { 136218938Smiwi 137218938Smiwi for (;;) { 138218938Smiwi 139142971Sambrisko bzero(&ke, sizeof(ke)); 140142971Sambrisko bzero(&kq_returned, sizeof(ke)); 141142971Sambrisko ts.tv_sec = 0; 142142971Sambrisko ts.tv_nsec = 1; 143142971Sambrisko result = kevent(kq, NULL, 0, 144142971Sambrisko &kq_returned, 1, &ts); 145142971Sambrisko error = errno; 146218938Smiwi if (result < 0) 147142971Sambrisko perror("kevent error: "); 148142971Sambrisko kq_iocb = kq_returned.udata; 149142971Sambrisko#ifdef DEBUG 150142971Sambrisko printf("kevent %d %d errno %d return.ident %p " 151142971Sambrisko "return.data %p return.udata %p %p\n", 152142971Sambrisko i, result, error, 153142971Sambrisko kq_returned.ident, kq_returned.data, 154142971Sambrisko kq_returned.udata, 155142971Sambrisko kq_iocb); 156142971Sambrisko#endif 157142971Sambrisko 158218938Smiwi if (kq_iocb) 159142971Sambrisko break; 160142971Sambrisko#ifdef DEBUG 161218938Smiwi printf("Try again left %d out of %d %d\n", 162218938Smiwi pending, MAX, cancel); 163142971Sambrisko#endif 164142971Sambrisko } 165142971Sambrisko 166218938Smiwi for (j = 0; j < MAX && iocb[j] != kq_iocb; 167218938Smiwi j++) ; 168142971Sambrisko#ifdef DEBUG 169142971Sambrisko printf("kq_iocb %p\n", kq_iocb); 170142971Sambrisko 171218938Smiwi printf("Error Result for %d is %d pending %d\n", 172218938Smiwi j, result, pending); 173142971Sambrisko#endif 174142971Sambrisko result = aio_return(kq_iocb); 175142971Sambrisko#ifdef DEBUG 176218938Smiwi printf("Return Result for %d is %d\n\n", j, result); 177142971Sambrisko#endif 178142971Sambrisko if (result != sizeof(buffer)) { 179218938Smiwi printf("FAIL: run %d, operation %d, result %d " 180218938Smiwi " (errno=%d) should be %d\n", run, pending, 181218938Smiwi result, errno, sizeof(buffer)); 182218938Smiwi failed++; 183218938Smiwi } else 184218938Smiwi printf("PASS: run %d, left %d\n", run, 185218938Smiwi pending - 1); 186142971Sambrisko 187142971Sambrisko free(kq_iocb); 188142971Sambrisko iocb[j] = NULL; 189142971Sambrisko pending--; 190142971Sambrisko i++; 191142971Sambrisko } 192218938Smiwi 193218938Smiwi for (i = 0; i < MAX; i++) 194218938Smiwi free(iocb[i]); 195218938Smiwi 196142971Sambrisko } 197142971Sambrisko 198218938Smiwi if (tmp_file) 199142971Sambrisko unlink(pathname); 200142971Sambrisko 201218938Smiwi if (failed != 0) 202218938Smiwi printf("FAIL: %d tests failed\n", failed); 203218938Smiwi else 204218938Smiwi printf("PASS: All tests passed\n"); 205218938Smiwi 206218938Smiwi exit (failed == 0 ? 0 : 1); 207142971Sambrisko} 208