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
33 #include <sys/cdefs.h>
34 #include <sys/devicestat.h>
35 #include <sys/resource.h>
40 * Bumped every time we change the userland API. Hopefully this doesn't
41 * happen very often! This should be bumped every time we have to
42 * increment SHLIB_MAJOR in the libdevstat Makefile (for non-backwards
43 * compatible API changes) and should also be bumped every time we make
44 * backwards-compatible API changes, so application writers have a way to
45 * determine when a particular feature is available.
47 #define DEVSTAT_USER_API_VER 6
49 #define DEVSTAT_ERRBUF_SIZE 2048 /* size of the devstat library error string */
51 extern char devstat_errbuf[];
54 DEVSTAT_MATCH_NONE = 0x00,
55 DEVSTAT_MATCH_TYPE = 0x01,
56 DEVSTAT_MATCH_IF = 0x02,
57 DEVSTAT_MATCH_PASS = 0x04
58 } devstat_match_flags;
64 DSM_TOTAL_BYTES_WRITE,
66 DSM_TOTAL_TRANSFERS_READ,
67 DSM_TOTAL_TRANSFERS_WRITE,
68 DSM_TOTAL_TRANSFERS_OTHER,
70 DSM_TOTAL_BLOCKS_READ,
71 DSM_TOTAL_BLOCKS_WRITE,
73 DSM_KB_PER_TRANSFER_READ,
74 DSM_KB_PER_TRANSFER_WRITE,
75 DSM_TRANSFERS_PER_SECOND,
76 DSM_TRANSFERS_PER_SECOND_READ,
77 DSM_TRANSFERS_PER_SECOND_WRITE,
78 DSM_TRANSFERS_PER_SECOND_OTHER,
80 DSM_MB_PER_SECOND_READ,
81 DSM_MB_PER_SECOND_WRITE,
82 DSM_BLOCKS_PER_SECOND,
83 DSM_BLOCKS_PER_SECOND_READ,
84 DSM_BLOCKS_PER_SECOND_WRITE,
85 DSM_MS_PER_TRANSACTION,
86 DSM_MS_PER_TRANSACTION_READ,
87 DSM_MS_PER_TRANSACTION_WRITE,
90 DSM_TOTAL_TRANSFERS_FREE,
91 DSM_TOTAL_BLOCKS_FREE,
92 DSM_KB_PER_TRANSFER_FREE,
93 DSM_MB_PER_SECOND_FREE,
94 DSM_TRANSFERS_PER_SECOND_FREE,
95 DSM_BLOCKS_PER_SECOND_FREE,
96 DSM_MS_PER_TRANSACTION_OTHER,
97 DSM_MS_PER_TRANSACTION_FREE,
101 DSM_TOTAL_DURATION_READ,
102 DSM_TOTAL_DURATION_WRITE,
103 DSM_TOTAL_DURATION_FREE,
104 DSM_TOTAL_DURATION_OTHER,
109 struct devstat_match {
110 devstat_match_flags match_fields;
111 devstat_type_flags device_type;
112 int num_match_categories;
115 struct devstat_match_table {
116 const char * match_str;
117 devstat_type_flags type;
118 devstat_match_flags match_field;
121 struct device_selection {
122 u_int32_t device_number;
123 char device_name[DEVSTAT_NAME_LEN];
131 struct devstat *devices;
138 long cp_time[CPUSTATES];
141 struct devinfo *dinfo;
142 long double snap_time;
150 } devstat_select_mode;
154 int devstat_getnumdevs(kvm_t *kd);
155 long devstat_getgeneration(kvm_t *kd);
156 int devstat_getversion(kvm_t *kd);
157 int devstat_checkversion(kvm_t *kd);
158 int devstat_getdevs(kvm_t *kd, struct statinfo *stats);
159 int devstat_selectdevs(struct device_selection **dev_select, int *num_selected,
160 int *num_selections, long *select_generation,
161 long current_generation, struct devstat *devices,
162 int numdevs, struct devstat_match *matches,
163 int num_matches, char **dev_selections,
164 int num_dev_selections, devstat_select_mode select_mode,
165 int maxshowdevs, int perf_select);
166 int devstat_buildmatch(char *match_str, struct devstat_match **matches,
168 int devstat_compute_statistics(struct devstat *current,
169 struct devstat *previous,
170 long double etime, ...);
171 long double devstat_compute_etime(struct bintime *cur_time,
172 struct bintime *prev_time);
175 #endif /* _DEVSTAT_H */