1/* 2 * Copyright (c) 2006 Apple Inc. All Rights Reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 30#ifdef __sun 31#pragma ident "@(#)lmbench_read.c 1.5 05/08/04 Apple Inc." 32#endif 33 34 35#ifdef linux 36#define _XOPEN_SOURCE 500 37#endif 38 39#include <unistd.h> 40#include <stdlib.h> 41#include <stdio.h> 42#include <fcntl.h> 43 44#include "../libmicro.h" 45 46typedef struct { 47 char *ts_buf; 48 int ts_fd; 49} tsd_t; 50 51#define DEFF "/dev/zero" 52#define DEFS 1024 53 54static char *optf = DEFF; 55static long long opts = DEFS; 56int optw = 0; 57 58int 59benchmark_init() 60{ 61 lm_tsdsize = sizeof (tsd_t); 62 63 (void) sprintf(lm_optstr, "f:s:w"); 64 65 (void) sprintf(lm_usage, 66 " [-f file-to-read (default %s)]\n" 67 " [-s buffer-size (default %d)]\n" 68 " [-w (store a byte to each page after read)]\n" 69 "notes: measures lmbench_read()\n", 70 DEFF, DEFS); 71 72 (void) sprintf(lm_header, "%8s", "size"); 73 74 lm_defB = 1; 75 76 return (0); 77} 78 79int 80benchmark_optswitch(int opt, char *optarg) 81{ 82 switch (opt) { 83 case 'w': 84 optw = getpagesize(); 85 break; 86 case 'f': 87 optf = optarg; 88 break; 89 case 's': 90 opts = sizetoll(optarg); 91 break; 92 default: 93 return (-1); 94 } 95 return (0); 96} 97 98int 99benchmark_initrun() 100{ 101 return (0); 102} 103 104int 105benchmark_initbatch(void *tsd) 106{ 107 tsd_t *ts = (tsd_t *)tsd; 108 109 if (ts->ts_buf == NULL) { 110 ts->ts_buf = malloc(opts); 111 ts->ts_fd = open(optf, O_RDONLY); 112 } 113 114 (void) lseek(ts->ts_fd, 0, SEEK_SET); 115 116 return (0); 117} 118 119int 120benchmark(void *tsd, result_t *res) 121{ 122 tsd_t *ts = (tsd_t *)tsd; 123 int i; 124 int j; 125/* 126 * The libmicro test uses a for loop as below: 127 * for (i = 0; i < lm_optB; i++) { 128 * 129 * we can probably get away with using lm_optB 130 * in the while loop below 131 * 132 */ 133 i = 0; 134 135 while (i++ < lm_optB) { 136 if (read(ts->ts_fd, ts->ts_buf, opts) != opts) { 137 res->re_errors++; 138 } 139 if (optw) 140 for (j = 0; j < opts; j += optw) 141 ts->ts_buf[j] = 0; 142 } 143 res->re_count = i; 144 145 return (0); 146} 147 148char * 149benchmark_result() 150{ 151 static char result[256]; 152 153 (void) sprintf(result, "%8lld", opts); 154 155 return (result); 156} 157