| 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 2004 Sun Microsystems, Inc. All rights reserved. |
| 28 | * Use is subject to license terms. |
| 29 | */ |
| 30 | |
| 31 | #include <sys/mman.h> |
| 32 | #include <unistd.h> |
| 33 | #include <stdlib.h> |
| 34 | #include <stdio.h> |
| 35 | #include <fcntl.h> |
| 36 | #include <strings.h> |
| 37 | |
| 38 | #include "libmicro.h" |
| 39 | |
| 40 | typedef struct { |
| 41 | char *ts_map; |
| 42 | int ts_foo; /* defeat optimizers */ |
| 43 | } tsd_t; |
| 44 | |
| 45 | #define DEFF "/dev/zero" |
| 46 | #define DEFL 8192 |
| 47 | |
| 48 | static char *optf = DEFF; |
| 49 | static long long optl = DEFL; |
| 50 | static int optr = 0; |
| 51 | static int opts = 0; |
| 52 | static int optw = 0; |
| 53 | static int opta = MS_SYNC; |
| 54 | static int opti = 0; |
| 55 | static int anon = 0; |
| 56 | static int pagesize; |
| 57 | |
| 58 | int |
| 59 | benchmark_init() |
| 60 | { |
| 61 | lm_tsdsize = sizeof (tsd_t); |
| 62 | |
| 63 | (void) sprintf(lm_optstr, "af:il:rsw"); |
| 64 | |
| 65 | (void) sprintf(lm_usage, |
| 66 | " [-f file-to-map (default %s)]\n" |
| 67 | " [-l mapping-length (default %d)]\n" |
| 68 | " [-r] (read a byte from each page between msyncs)\n" |
| 69 | " [-w] (write a byte to each page between msyncs)\n" |
| 70 | " [-s] (use MAP_SHARED instead of MAP_PRIVATE)\n" |
| 71 | " [-a (specify MS_ASYNC rather than default MS_SYNC)\n" |
| 72 | " [-i (specify MS_INVALIDATE)\n" |
| 73 | "notes: measures msync()\n", |
| 74 | DEFF, DEFL); |
| 75 | |
| 76 | (void) sprintf(lm_header, "%8s %6s", "length", "flags"); |
| 77 | |
| 78 | return (0); |
| 79 | } |
| 80 | |
| 81 | int |
| 82 | benchmark_optswitch(int opt, char *optarg) |
| 83 | { |
| 84 | switch (opt) { |
| 85 | case 'a': |
| 86 | opta = MS_ASYNC; |
| 87 | break; |
| 88 | |
| 89 | case 'f': |
| 90 | optf = optarg; |
| 91 | break; |
| 92 | |
| 93 | case 'i': |
| 94 | opti = MS_INVALIDATE; |
| 95 | break; |
| 96 | |
| 97 | case 'l': |
| 98 | optl = sizetoll(optarg); |
| 99 | break; |
| 100 | case 'r': |
| 101 | optr = 1; |
| 102 | break; |
| 103 | case 's': |
| 104 | opts = 1; |
| 105 | break; |
| 106 | case 'w': |
| 107 | optw = 1; |
| 108 | break; |
| 109 | default: |
| 110 | return (-1); |
| 111 | } |
| 112 | |
| 113 | pagesize = getpagesize(); |
| 114 | |
| 115 | return (0); |
| 116 | } |
| 117 | |
| 118 | int |
| 119 | benchmark_initworker(void *tsd) |
| 120 | { |
| 121 | tsd_t *ts = (tsd_t *)tsd; |
| 122 | |
| 123 | int fd; |
| 124 | |
| 125 | if ((fd = open(optf, O_RDWR)) < 0) { |
| 126 | perror("open:"); |
| 127 | return (1); |
| 128 | } |
| 129 | |
| 130 | (void) ftruncate(fd, optl); |
| 131 | |
| 132 | if ((ts->ts_map = (char *)mmap(NULL, optl, |
| 133 | PROT_READ | PROT_WRITE, opts ? MAP_SHARED : MAP_PRIVATE, |
| 134 | fd, 0L)) == MAP_FAILED) { |
| 135 | perror("mmap:"); |
| 136 | (void) close(fd); |
| 137 | return (1); |
| 138 | } |
| 139 | |
| 140 | return (0); |
| 141 | } |
| 142 | |
| 143 | int |
| 144 | benchmark(void *tsd, result_t *res) |
| 145 | { |
| 146 | tsd_t *ts = (tsd_t *)tsd; |
| 147 | int i, j; |
| 148 | |
| 149 | for (i = 0; i < lm_optB; i++) { |
| 150 | |
| 151 | if (msync(ts->ts_map, optl, opta | opti) < 0) { |
| 152 | perror("msync:"); |
| 153 | res->re_errors++; |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | if (optr) { |
| 158 | for (j = 0; j < optl; j += pagesize) { |
| 159 | ts->ts_foo += ts->ts_map[j]; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | if (optw) { |
| 164 | for (j = 0; j < optl; j += pagesize) { |
| 165 | ts->ts_map[j] = 1; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | res->re_count = i; |
| 170 | |
| 171 | return (0); |
| 172 | } |
| 173 | |
| 174 | char * |
| 175 | benchmark_result() |
| 176 | { |
| 177 | static char result[256]; |
| 178 | char flags[6]; |
| 179 | |
| 180 | flags[0] = anon ? 'a' : '-'; |
| 181 | flags[1] = optr ? 'r' : '-'; |
| 182 | flags[2] = optw ? 'w' : '-'; |
| 183 | flags[3] = opts ? 's' : '-'; |
| 184 | flags[4] = opti ? 'i' : '-'; |
| 185 | flags[5] = 0; |
| 186 | |
| 187 | (void) sprintf(result, "%8lld %6s", optl, flags); |
| 188 | |
| 189 | return (result); |
| 190 | } |