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Diffstat (limited to 'lib/libdevstat/devstat.h')
| -rw-r--r-- | lib/libdevstat/devstat.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/lib/libdevstat/devstat.h b/lib/libdevstat/devstat.h new file mode 100644 index 000000000000..c1ae355df6d8 --- /dev/null +++ b/lib/libdevstat/devstat.h @@ -0,0 +1,171 @@ +/* + * Copyright (c) 1997, 1998 Kenneth D. Merry. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _DEVSTAT_H +#define _DEVSTAT_H +#include <sys/cdefs.h> +#include <sys/devicestat.h> + +#include <kvm.h> + +#define DEVSTAT_ERRBUF_SIZE 2048 /* size of the devstat library error string */ + +extern char devstat_errbuf[]; + +typedef enum { + DEVSTAT_MATCH_NONE = 0x00, + DEVSTAT_MATCH_TYPE = 0x01, + DEVSTAT_MATCH_IF = 0x02, + DEVSTAT_MATCH_PASS = 0x04 +} devstat_match_flags; + +typedef enum { + DSM_NONE, + DSM_TOTAL_BYTES, + DSM_TOTAL_BYTES_READ, + DSM_TOTAL_BYTES_WRITE, + DSM_TOTAL_TRANSFERS, + DSM_TOTAL_TRANSFERS_READ, + DSM_TOTAL_TRANSFERS_WRITE, + DSM_TOTAL_TRANSFERS_OTHER, + DSM_TOTAL_BLOCKS, + DSM_TOTAL_BLOCKS_READ, + DSM_TOTAL_BLOCKS_WRITE, + DSM_KB_PER_TRANSFER, + DSM_KB_PER_TRANSFER_READ, + DSM_KB_PER_TRANSFER_WRITE, + DSM_TRANSFERS_PER_SECOND, + DSM_TRANSFERS_PER_SECOND_READ, + DSM_TRANSFERS_PER_SECOND_WRITE, + DSM_TRANSFERS_PER_SECOND_OTHER, + DSM_MB_PER_SECOND, + DSM_MB_PER_SECOND_READ, + DSM_MB_PER_SECOND_WRITE, + DSM_BLOCKS_PER_SECOND, + DSM_BLOCKS_PER_SECOND_READ, + DSM_BLOCKS_PER_SECOND_WRITE, + DSM_MS_PER_TRANSACTION, + DSM_MS_PER_TRANSACTION_READ, + DSM_MS_PER_TRANSACTION_WRITE, + DSM_SKIP, + DSM_MAX +} devstat_metric; + +struct devstat_match { + devstat_match_flags match_fields; + devstat_type_flags device_type; + int num_match_categories; +}; + +struct devstat_match_table { + const char * match_str; + devstat_type_flags type; + devstat_match_flags match_field; +}; + +struct device_selection { + u_int32_t device_number; + char device_name[DEVSTAT_NAME_LEN]; + int unit_number; + int selected; + u_int64_t bytes; + int position; +}; + +struct devinfo { + struct devstat *devices; + u_int8_t *mem_ptr; + long generation; + int numdevs; +}; + +struct statinfo { + long cp_time[CPUSTATES]; + long tk_nin; + long tk_nout; + struct devinfo *dinfo; + struct timeval busy_time; +}; + +typedef enum { + DS_SELECT_ADD, + DS_SELECT_ONLY, + DS_SELECT_REMOVE, + DS_SELECT_ADDONLY +} devstat_select_mode; + +__BEGIN_DECLS +/* Legacy interfaces. */ +int getnumdevs(void); +long getgeneration(void); +int getversion(void); +int checkversion(void); +int getdevs(struct statinfo *stats); +int selectdevs(struct device_selection **dev_select, int *num_selected, + int *num_selections, long *select_generation, + long current_generation, struct devstat *devices, int numdevs, + struct devstat_match *matches, int num_matches, + char **dev_selections, int num_dev_selections, + devstat_select_mode select_mode, int maxshowdevs, + int perf_select); +int buildmatch(char *match_str, struct devstat_match **matches, + int *num_matches); +int compute_stats(struct devstat *current, struct devstat *previous, + long double etime, u_int64_t *total_bytes, + u_int64_t *total_transfers, u_int64_t *total_blocks, + long double *kb_per_transfer, + long double *transfers_per_second, long double *mb_per_second, + long double *blocks_per_second, + long double *ms_per_transaction); +long double compute_etime(struct timeval cur_time, struct timeval prev_time); + +/* New interfaces. */ +int devstat_getnumdevs(kvm_t *kd); +long devstat_getgeneration(kvm_t *kd); +int devstat_getversion(kvm_t *kd); +int devstat_checkversion(kvm_t *kd); +int devstat_getdevs(kvm_t *kd, struct statinfo *stats); +int devstat_selectdevs(struct device_selection **dev_select, int *num_selected, + int *num_selections, long *select_generation, + long current_generation, struct devstat *devices, + int numdevs, struct devstat_match *matches, + int num_matches, char **dev_selections, + int num_dev_selections, devstat_select_mode select_mode, + int maxshowdevs, int perf_select); +int devstat_buildmatch(char *match_str, struct devstat_match **matches, + int *num_matches); +int devstat_compute_statistics(struct devstat *current, + struct devstat *previous, + long double etime, ...); +long double devstat_compute_etime(struct timeval cur_time, + struct timeval prev_time); +__END_DECLS + +#endif /* _DEVSTAT_H */ |