devstat.h revision 39211 
1/*
2 * Copyright (c) 1997, 1998 Kenneth D. Merry.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 *	$Id$
29 */
30
31#ifndef _DEVSTAT_H
32#define _DEVSTAT_H
33#include <sys/cdefs.h>
34#include <sys/devicestat.h>
35
36#define DEVSTAT_ERRBUF_SIZE  2048 /* size of the devstat library error string */
37
38extern char devstat_errbuf[];
39
40typedef enum {
41	DEVSTAT_MATCH_NONE	= 0x00,
42	DEVSTAT_MATCH_TYPE	= 0x01,
43	DEVSTAT_MATCH_IF	= 0x02,
44	DEVSTAT_MATCH_PASS	= 0x04
45} devstat_match_flags;
46
47struct devstat_match {
48	devstat_match_flags	match_fields;
49	devstat_type_flags	device_type;
50	int			num_match_categories;
51};
52
53struct devstat_match_table {
54	char 			*match_str;
55	devstat_type_flags	type;
56	devstat_match_flags	match_field;
57};
58
59struct device_selection {
60	u_int32_t	device_number;
61	char		device_name[DEVSTAT_NAME_LEN];
62	int		unit_number;
63	int		selected;
64	u_int64_t	bytes;
65	int		position;
66};
67
68struct devinfo {
69	struct devstat	*devices;
70	u_int8_t	*mem_ptr;
71	int		generation;
72	int		numdevs;
73};
74
75struct statinfo {
76	long		cp_time[CPUSTATES];
77	long		tk_nin;
78	long		tk_nout;
79	struct devinfo	*dinfo;
80	struct timeval	busy_time;
81};
82
83typedef enum {
84	DS_SELECT_ADD,
85	DS_SELECT_ONLY,
86	DS_SELECT_REMOVE,
87	DS_SELECT_ADDONLY
88} devstat_select_mode;
89
90__BEGIN_DECLS
91int getnumdevs(void);
92int getgeneration(void);
93int getversion(void);
94int checkversion(void);
95int getdevs(struct statinfo *stats);
96int selectdevs(struct device_selection **dev_select, int *num_selected,
97	       int *num_selections, int *select_generation,
98	       int current_generation, struct devstat *devices, int numdevs,
99	       struct devstat_match *matches, int num_matches,
100	       char **dev_selections, int num_dev_selections,
101	       devstat_select_mode select_mode, int maxshowdevs,
102	       int perf_select);
103int buildmatch(char *match_str, struct devstat_match **matches,
104	       int *num_matches);
105int compute_stats(struct devstat *current, struct devstat *previous,
106		  long double etime, u_int64_t *total_bytes,
107		  u_int64_t *total_transfers, u_int64_t *total_blocks,
108		  long double *kb_per_transfer,
109		  long double *transfers_per_second, long double *mb_per_second,
110		  long double *blocks_per_second,
111		  long double *ms_per_transaction);
112long double compute_etime(struct timeval cur_time, struct timeval prev_time);
113__END_DECLS
114
115#endif /* _DEVSTAT_H  */
116