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 * $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 $ 30 */ 31 32 #ifndef _DEVSTAT_H 33 #define _DEVSTAT_H 34 #include <sys/cdefs.h> 35 #include <sys/devicestat.h> 36 37 #define DEVSTAT_ERRBUF_SIZE 2048 /* size of the devstat library error string */ 38 39 extern char devstat_errbuf[]; 40 41 typedef enum { 42 DEVSTAT_MATCH_NONE = 0x00, 43 DEVSTAT_MATCH_TYPE = 0x01, 44 DEVSTAT_MATCH_IF = 0x02, 45 DEVSTAT_MATCH_PASS = 0x04 46 } devstat_match_flags; 47 48 struct devstat_match { 49 devstat_match_flags match_fields; 50 devstat_type_flags device_type; 51 int num_match_categories; 52 }; 53 54 struct devstat_match_table { 55 const char *match_str; 56 devstat_type_flags type; 57 devstat_match_flags match_field; 58 }; 59 60 struct device_selection { 61 u_int32_t device_number; 62 char device_name[DEVSTAT_NAME_LEN]; 63 int unit_number; 64 int selected; 65 u_int64_t bytes; 66 int position; 67 }; 68 69 struct devinfo { 70 struct devstat *devices; 71 u_int8_t *mem_ptr; 72 long generation; 73 int numdevs; 74 }; 75 76 struct statinfo { 77 struct devinfo *dinfo; 78 struct timeval busy_time; 79 }; 80 81 typedef enum { 82 DS_SELECT_ADD, 83 DS_SELECT_ONLY, 84 DS_SELECT_REMOVE, 85 DS_SELECT_ADDONLY 86 } devstat_select_mode; 87 88 __BEGIN_DECLS 89 int getnumdevs(void); 90 long getgeneration(void); 91 int getversion(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, 100 int perf_select); 101 int buildmatch(const char *match_str, struct devstat_match **matches, 102 int *num_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 int compute_stats_read(struct devstat *current, struct devstat *previous, 111 long double etime, u_int64_t *total_bytes, 112 u_int64_t *total_transfers, u_int64_t *total_blocks, 113 long double *kb_per_transfer, 114 long double *transfers_per_second, long double *mb_per_second, 115 long double *blocks_per_second, 116 long double *ms_per_transaction); 117 int compute_stats_write(struct devstat *current, struct devstat *previous, 118 long double etime, u_int64_t *total_bytes, 119 u_int64_t *total_transfers, u_int64_t *total_blocks, 120 long double *kb_per_transfer, 121 long double *transfers_per_second, long double *mb_per_second, 122 long double *blocks_per_second, 123 long double *ms_per_transaction); 124 long double compute_etime(struct timeval cur_time, struct timeval prev_time); 125 __END_DECLS 126 127 #endif /* _DEVSTAT_H */ 128