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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#ifdef linux
32#define _XOPEN_SOURCE 500
33#endif
34
35#include <unistd.h>
36#include <stdlib.h>
37#include <stdio.h>
38#include <fcntl.h>
39
40#include "libmicro.h"
41
42typedef struct {
43 char *ts_buf;
44 int ts_fd;
45} tsd_t;
46
47#define DEFF "/dev/null"
48#define DEFS 1024
49
50static int optc = 0;
51static char *optf = DEFF;
52static long long opts = DEFS;
53static int optd;
54
55int
56benchmark_init()
57{
58 lm_tsdsize = sizeof (tsd_t);
59
60 (void) sprintf(lm_optstr, "cdf:s:");
61
62 (void) sprintf(lm_usage,
63 " [-f file-to-write (default %s)]\n"
64 " [-s buffer-size (default %d)]\n"
65 " [-c ] (make sure buffer is in cache)\n"
66#ifdef __sun
67 " [-d ] use directio"
68#endif
69 "notes: measures write()\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
84 case 'd':
85 optd++;
86 break;
87 case 'c':
88 optc++;
89 break;
90 case 'f':
91 optf = optarg;
92 break;
93 case 's':
94 opts = sizetoll(optarg);
95 break;
96 default:
97 return (-1);
98 }
99 return (0);
100}
101
102int
103benchmark_initbatch(void *tsd)
104{
105 tsd_t *ts = (tsd_t *)tsd;
106 int i;
107
108 if (ts->ts_buf == NULL) {
109 ts->ts_buf = malloc(opts);
110 ts->ts_fd = open(optf, O_WRONLY);
111
112#ifdef __sun
113 if (optd)
114 (void) directio(ts->ts_fd, DIRECTIO_ON);
115#endif
116 /*
117 * bring buf into cache if specified.
118 */
119
120 if (optc)
121 for (i = 0; i < opts; i++)
122 ts->ts_buf[i] = 0;
123 }
124
125 (void) lseek(ts->ts_fd, 0, SEEK_SET);
126
127 return (0);
128}
129
130int
131benchmark(void *tsd, result_t *res)
132{
133 tsd_t *ts = (tsd_t *)tsd;
134 int i;
135
136 for (i = 0; i < lm_optB; i++) {
137 if (write(ts->ts_fd, ts->ts_buf, opts) != opts) {
138 res->re_errors++;
139 }
140 }
141 res->re_count = i;
142
143 return (0);
144}
145
146char *
147benchmark_result()
148{
149 static char result[256];
150
151 (void) sprintf(result, "%8lld", opts);
152
153 return (result);
154}