1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms 5 * of the Common Development and Distribution License 6 * (the "License"). You may not use this file except 7 * in compliance with the License. 8 * 9 * You can obtain a copy of the license at 10 * src/OPENSOLARIS.LICENSE 11 * or http://www.opensolaris.org/os/licensing. 12 * See the License for the specific language governing 13 * permissions and limitations under the License. 14 * 15 * When distributing Covered Code, include this CDDL 16 * HEADER in each file and include the License file at 17 * usr/src/OPENSOLARIS.LICENSE. If applicable, 18 * add the following below this CDDL HEADER, with the 19 * fields enclosed by brackets "[]" replaced with your 20 * own identifying information: Portions Copyright [yyyy] 21 * [name of copyright owner] 22 * 23 * CDDL HEADER END 24 */ 25 26/* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31#include <sys/uio.h> 32#include <limits.h> 33#include <unistd.h> 34#include <stdlib.h> 35#include <stdio.h> 36#include <fcntl.h> 37 38#ifndef IOV_MAX 39#define IOV_MAX UIO_MAXIOV 40#endif 41 42#include "libmicro.h" 43 44typedef struct { 45 int ts_once; 46 struct iovec *ts_iov; 47 int ts_fd; 48} tsd_t; 49 50#define DEFF "/dev/null" 51#define DEFS 1024 52#define DEFV 10 53 54static char *optf = DEFF; 55static int opts = DEFS; 56static int optv = DEFV; 57 58int 59benchmark_init() 60{ 61 lm_tsdsize = sizeof (tsd_t); 62 63 (void) sprintf(lm_optstr, "f:s:v:"); 64 65 (void) sprintf(lm_usage, 66 " [-f file-to-write (default %s)]\n" 67 " [-s buffer-size (default %d)]\n" 68 " [-v vector-size (default %d)]\n" 69 "notes: measures writev()\n" 70 " IOV_MAX is %d\n" 71 " SSIZE_MAX is %ld\n", 72 DEFF, DEFS, DEFV, IOV_MAX, SSIZE_MAX); 73 74 (void) sprintf(lm_header, "%8s %4s", "size", "vec"); 75 76 lm_defB = 1; 77 78 return (0); 79} 80 81int 82benchmark_optswitch(int opt, char *optarg) 83{ 84 switch (opt) { 85 case 'f': 86 optf = optarg; 87 break; 88 case 's': 89 opts = sizetoint(optarg); 90 break; 91 case 'v': 92 optv = atoi(optarg); 93 break; 94 default: 95 return (-1); 96 } 97 return (0); 98} 99 100int 101benchmark_initbatch(void *tsd) 102{ 103 tsd_t *ts = (tsd_t *)tsd; 104 int i; 105 int errors = 0; 106 107 if (ts->ts_once++ == 0) { 108 ts->ts_fd = open(optf, O_WRONLY); 109 if (ts->ts_fd == -1) { 110 errors++; 111 } 112 ts->ts_iov = (struct iovec *)malloc( 113 optv * sizeof (struct iovec)); 114 for (i = 0; i < optv; i++) { 115 ts->ts_iov[i].iov_base = malloc(opts); 116 ts->ts_iov[i].iov_len = opts; 117 } 118 } 119 120 (void) lseek(ts->ts_fd, 0, SEEK_SET); 121 122 return (errors); 123} 124 125int 126benchmark(void *tsd, result_t *res) 127{ 128 tsd_t *ts = (tsd_t *)tsd; 129 int i; 130 131 for (i = 0; i < lm_optB; i++) { 132 if (writev(ts->ts_fd, ts->ts_iov, optv) != opts * optv) { 133 res->re_errors++; 134 } 135 } 136 res->re_count = i; 137 138 return (0); 139} 140 141char * 142benchmark_result() 143{ 144 static char result[256]; 145 146 (void) sprintf(result, "%8d %4d", opts, optv); 147 148 return (result); 149} 150