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} tsd_t;
45
46#define	DEFF			"/dev/zero"
47#define	DEFS			1024
48
49static char			*optf = DEFF;
50static long long		opts = DEFS;
51static int			optw = 0;
52static int			fd = -1;
53
54int
55benchmark_init()
56{
57	lm_tsdsize = sizeof (tsd_t);
58
59	(void) sprintf(lm_optstr, "wf:s:");
60
61	(void) sprintf(lm_usage,
62	    "       [-f file-to-read (default %s)]\n"
63	    "       [-s buffer-size (default %d)]\n"
64	    "       [-w (write a byte to each page after read)]\n"
65	    "notes: measures pread()\n",
66	    DEFF, DEFS);
67
68	(void) sprintf(lm_header, "%8s", "size");
69
70	return (0);
71}
72
73int
74benchmark_optswitch(int opt, char *optarg)
75{
76	switch (opt) {
77	case 'w':
78		optw = getpagesize();
79		break;
80	case 'f':
81		optf = optarg;
82		break;
83	case 's':
84		opts = sizetoll(optarg);
85		break;
86	default:
87		return (-1);
88	}
89	return (0);
90}
91
92int
93benchmark_initrun()
94{
95	fd = open(optf, O_RDONLY);
96
97	return (0);
98}
99
100int
101benchmark_initbatch(void *tsd)
102{
103	tsd_t			*ts = (tsd_t *)tsd;
104	int			errors = 0;
105
106	if (ts->ts_buf == NULL) {
107		ts->ts_buf = malloc(opts);
108	}
109
110	return (errors);
111}
112
113int
114benchmark(void *tsd, result_t *res)
115{
116	tsd_t			*ts = (tsd_t *)tsd;
117	int			i;
118	int			j;
119
120	for (i = 0; i < lm_optB; i++) {
121		if (pread(fd, ts->ts_buf, opts, 0) != opts) {
122			res->re_errors++;
123		}
124		if (optw)  {
125			for (j = 0; j < opts; j += optw)
126				ts->ts_buf[j] = 0;
127		}
128	}
129	res->re_count = i;
130
131	return (0);
132}
133
134char *
135benchmark_result()
136{
137	static char		result[256];
138
139	(void) sprintf(result, "%8lld", opts);
140
141	return (result);
142}
143