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: stable/11/tests/sys/aio/aio_kqueue_test.c 326677 2017-12-08 05:20:54Z asomers $ 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 49282136Sngie#include "freebsd_test_suite/macros.h" 50296277Sjhb#include "local.h" 51142971Sambrisko 52282136Sngie#define PATH_TEMPLATE "aio.XXXXXXXXXX" 53282136Sngie 54142971Sambrisko#define MAX_RUNS 300 55142971Sambrisko/* #define DEBUG */ 56142971Sambrisko 57218938Smiwiint 58218938Smiwimain (int argc, char *argv[]) 59218938Smiwi{ 60326677Sasomers struct aiocb **iocb, *kq_iocb; 61282136Sngie char *file, pathname[sizeof(PATH_TEMPLATE)+1]; 62142971Sambrisko struct kevent ke, kq_returned; 63142971Sambrisko struct timespec ts; 64282136Sngie char buffer[32768]; 65326677Sasomers int max_queue_per_proc; 66326677Sasomers size_t max_queue_per_proc_size; 67292816Sngie#ifdef DEBUG 68292816Sngie int cancel, error; 69292816Sngie#endif 70292816Sngie int failed = 0, fd, kq, pending, result, run; 71282136Sngie int tmp_file = 0; 72326677Sasomers int i, j; 73142971Sambrisko 74282136Sngie PLAIN_REQUIRE_KERNEL_MODULE("aio", 0); 75296277Sjhb PLAIN_REQUIRE_UNSAFE_AIO(0); 76282136Sngie 77326677Sasomers max_queue_per_proc_size = sizeof(max_queue_per_proc); 78326677Sasomers if (sysctlbyname("vfs.aio.max_aio_queue_per_proc", 79326677Sasomers &max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0) 80326677Sasomers err(1, "sysctlbyname"); 81326677Sasomers iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*)); 82326677Sasomers if (iocb == NULL) 83326677Sasomers err(1, "calloc"); 84326677Sasomers 85282136Sngie kq = kqueue(); 86142971Sambrisko if (kq < 0) { 87142971Sambrisko perror("No kqeueue\n"); 88142971Sambrisko exit(1); 89142971Sambrisko } 90142971Sambrisko 91142971Sambrisko if (argc == 1) { 92142971Sambrisko strcpy(pathname, PATH_TEMPLATE); 93142971Sambrisko fd = mkstemp(pathname); 94142971Sambrisko file = pathname; 95142971Sambrisko tmp_file = 1; 96142971Sambrisko } else { 97142971Sambrisko file = argv[1]; 98142971Sambrisko fd = open(file, O_RDWR|O_CREAT, 0666); 99142971Sambrisko } 100218938Smiwi if (fd == -1) 101218938Smiwi err(1, "Can't open %s\n", file); 102142971Sambrisko 103142971Sambrisko for (run = 0; run < MAX_RUNS; run++){ 104142971Sambrisko#ifdef DEBUG 105142971Sambrisko printf("Run %d\n", run); 106142971Sambrisko#endif 107326677Sasomers for (i = 0; i < max_queue_per_proc; i++) { 108218938Smiwi iocb[i] = (struct aiocb *)calloc(1, 109218938Smiwi sizeof(struct aiocb)); 110218938Smiwi if (iocb[i] == NULL) 111218938Smiwi err(1, "calloc"); 112142971Sambrisko } 113292816Sngie 114292816Sngie pending = 0; 115326677Sasomers for (i = 0; i < max_queue_per_proc; i++) { 116142971Sambrisko pending++; 117142971Sambrisko iocb[i]->aio_nbytes = sizeof(buffer); 118142971Sambrisko iocb[i]->aio_buf = buffer; 119142971Sambrisko iocb[i]->aio_fildes = fd; 120142971Sambrisko iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run; 121292816Sngie 122142971Sambrisko iocb[i]->aio_sigevent.sigev_notify_kqueue = kq; 123154668Sdavidxu iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i]; 124142971Sambrisko iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT; 125292816Sngie 126142971Sambrisko result = aio_write(iocb[i]); 127142971Sambrisko if (result != 0) { 128142971Sambrisko perror("aio_write"); 129218938Smiwi printf("Result %d iteration %d\n", result, i); 130142971Sambrisko exit(1); 131142971Sambrisko } 132142971Sambrisko#ifdef DEBUG 133142971Sambrisko printf("WRITE %d is at %p\n", i, iocb[i]); 134142971Sambrisko#endif 135142971Sambrisko result = rand(); 136142971Sambrisko if (result < RAND_MAX/32) { 137142971Sambrisko if (result > RAND_MAX/64) { 138142971Sambrisko result = aio_cancel(fd, iocb[i]); 139142971Sambrisko#ifdef DEBUG 140142971Sambrisko printf("Cancel %d %p result %d\n", i, iocb[i], result); 141142971Sambrisko#endif 142142971Sambrisko if (result == AIO_CANCELED) { 143142971Sambrisko aio_return(iocb[i]); 144218938Smiwi iocb[i] = NULL; 145142971Sambrisko pending--; 146142971Sambrisko } 147142971Sambrisko } 148142971Sambrisko } 149142971Sambrisko } 150292816Sngie#ifdef DEBUG 151326677Sasomers cancel = max_queue_per_proc - pending; 152292816Sngie#endif 153282136Sngie 154142971Sambrisko i = 0; 155218938Smiwi while (pending) { 156218938Smiwi 157218938Smiwi for (;;) { 158218938Smiwi 159142971Sambrisko bzero(&ke, sizeof(ke)); 160142971Sambrisko bzero(&kq_returned, sizeof(ke)); 161142971Sambrisko ts.tv_sec = 0; 162142971Sambrisko ts.tv_nsec = 1; 163292816Sngie result = kevent(kq, NULL, 0, 164142971Sambrisko &kq_returned, 1, &ts); 165292816Sngie#ifdef DEBUG 166142971Sambrisko error = errno; 167292816Sngie#endif 168218938Smiwi if (result < 0) 169142971Sambrisko perror("kevent error: "); 170142971Sambrisko kq_iocb = kq_returned.udata; 171142971Sambrisko#ifdef DEBUG 172142971Sambrisko printf("kevent %d %d errno %d return.ident %p " 173292816Sngie "return.data %p return.udata %p %p\n", 174292816Sngie i, result, error, 175319218Sasomers (void*)kq_returned.ident, 176319218Sasomers (void*)kq_returned.data, 177292816Sngie kq_returned.udata, 178142971Sambrisko kq_iocb); 179142971Sambrisko#endif 180292816Sngie 181218938Smiwi if (kq_iocb) 182142971Sambrisko break; 183142971Sambrisko#ifdef DEBUG 184319218Sasomers printf("Try again left %d out of %lu %d\n", 185326677Sasomers pending, max_queue_per_proc, cancel); 186142971Sambrisko#endif 187292816Sngie } 188292816Sngie 189326677Sasomers for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb; 190218938Smiwi j++) ; 191142971Sambrisko#ifdef DEBUG 192142971Sambrisko printf("kq_iocb %p\n", kq_iocb); 193292816Sngie 194218938Smiwi printf("Error Result for %d is %d pending %d\n", 195218938Smiwi j, result, pending); 196142971Sambrisko#endif 197142971Sambrisko result = aio_return(kq_iocb); 198142971Sambrisko#ifdef DEBUG 199218938Smiwi printf("Return Result for %d is %d\n\n", j, result); 200142971Sambrisko#endif 201142971Sambrisko if (result != sizeof(buffer)) { 202218938Smiwi printf("FAIL: run %d, operation %d, result %d " 203280895Sngie " (errno=%d) should be %zu\n", run, pending, 204218938Smiwi result, errno, sizeof(buffer)); 205218938Smiwi failed++; 206218938Smiwi } else 207218938Smiwi printf("PASS: run %d, left %d\n", run, 208218938Smiwi pending - 1); 209142971Sambrisko 210142971Sambrisko free(kq_iocb); 211142971Sambrisko iocb[j] = NULL; 212142971Sambrisko pending--; 213142971Sambrisko i++; 214292816Sngie } 215218938Smiwi 216326677Sasomers for (i = 0; i < max_queue_per_proc; i++) 217218938Smiwi free(iocb[i]); 218218938Smiwi 219142971Sambrisko } 220142971Sambrisko 221218938Smiwi if (tmp_file) 222142971Sambrisko unlink(pathname); 223142971Sambrisko 224218938Smiwi if (failed != 0) 225218938Smiwi printf("FAIL: %d tests failed\n", failed); 226218938Smiwi else 227218938Smiwi printf("PASS: All tests passed\n"); 228218938Smiwi 229218938Smiwi exit (failed == 0 ? 0 : 1); 230142971Sambrisko} 231