2 * Copyright (c) 1997, 1998 Kenneth D. Merry.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
28 * $FreeBSD: src/lib/libdevstat/devstat.h,v 1.3 1999/08/28 00:04:27 peter Exp $
29 * $DragonFly: src/lib/libdevstat/devstat.h,v 1.4 2005/01/08 19:19:26 joerg Exp $
34 #include <sys/cdefs.h>
35 #include <sys/devicestat.h>
37 #define DEVSTAT_ERRBUF_SIZE 2048 /* size of the devstat library error string */
39 extern char devstat_errbuf[];
42 DEVSTAT_MATCH_NONE = 0x00,
43 DEVSTAT_MATCH_TYPE = 0x01,
44 DEVSTAT_MATCH_IF = 0x02,
45 DEVSTAT_MATCH_PASS = 0x04
46 } devstat_match_flags;
48 struct devstat_match {
49 devstat_match_flags match_fields;
50 devstat_type_flags device_type;
51 int num_match_categories;
54 struct devstat_match_table {
56 devstat_type_flags type;
57 devstat_match_flags match_field;
60 struct device_selection {
61 u_int32_t device_number;
62 char device_name[DEVSTAT_NAME_LEN];
70 struct devstat *devices;
77 struct devinfo *dinfo;
78 struct timeval busy_time;
86 } devstat_select_mode;
90 long getgeneration(void);
92 int checkversion(void);
93 int getdevs(struct statinfo *stats);
94 int selectdevs(struct device_selection **dev_select, int *num_selected,
95 int *num_selections, long *select_generation,
96 long current_generation, struct devstat *devices, int numdevs,
97 struct devstat_match *matches, int num_matches,
98 char **dev_selections, int num_dev_selections,
99 devstat_select_mode select_mode, int maxshowdevs,
101 int buildmatch(const char *match_str, struct devstat_match **matches,
103 int compute_stats(struct devstat *current, struct devstat *previous,
104 long double etime, u_int64_t *total_bytes,
105 u_int64_t *total_transfers, u_int64_t *total_blocks,
106 long double *kb_per_transfer,
107 long double *transfers_per_second, long double *mb_per_second,
108 long double *blocks_per_second,
109 long double *ms_per_transaction);
110 long double compute_etime(struct timeval cur_time, struct timeval prev_time);
113 #endif /* _DEVSTAT_H */