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/*-
* Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $FreeBSD$
*/
#ifndef _BSDSTAT_H_
#define _BSDSTAT_H_
/*
* Base class for managing+displaying periodically collected statistics.
*/
/*
* Statistic definition/description. The are defined
* for stats that correspond 1-1 w/ a collected stat
* and for stats that are calculated indirectly.
*/
struct fmt {
int width; /* printed field width */
const char* name; /* stat field name referenced by user */
const char* label; /* printed header label */
const char* desc; /* verbose description */
};
#define BSDSTAT_DECL_METHODS(_p) \
/* set the format of the statistics to display */ \
void (*setfmt)(_p, const char *); \
/* collect+store ``current statistics'' */ \
void (*collect_cur)(_p); \
/* collect+store ``total statistics'' */ \
void (*collect_tot)(_p); \
/* update ``total statistics'' if necessary from current */ \
void (*update_tot)(_p); \
/* format a statistic from the current stats */ \
int (*get_curstat)(_p, int, char [], size_t); \
/* format a statistic from the total stats */ \
int (*get_totstat)(_p, int, char [], size_t); \
/* print field headers terminated by a \n */ \
void (*print_header)(_p, FILE *); \
/* print current statistics terminated by a \n */ \
void (*print_current)(_p, FILE *); \
/* print total statistics terminated by a \n */ \
void (*print_total)(_p, FILE *); \
/* print total statistics in a verbose (1 stat/line) format */ \
void (*print_verbose)(_p, FILE *); \
/* print available statistics */ \
void (*print_fields)(_p, FILE *)
/*
* Statistics base class. This class is not usable; only
* classes derived from it are useful.
*/
struct bsdstat {
const char *name; /* statistics name, e.g. wlanstats */
const struct fmt *stats; /* statistics in class */
int nstats; /* number of stats */
#define FMTS_IS_STAT 0x80 /* the following two bytes are the stat id */
unsigned char fmts[4096]; /* private: compiled stats to display */
BSDSTAT_DECL_METHODS(struct bsdstat *);
};
extern void bsdstat_init(struct bsdstat *, const char *name,
const struct fmt *stats, int nstats);
#define BSDSTAT_DEFINE_BOUNCE(_t) \
static void _t##_setfmt(struct _t *wf, const char *fmt0) \
{ wf->base.setfmt(&wf->base, fmt0); } \
static void _t##_collect_cur(struct _t *wf) \
{ wf->base.collect_cur(&wf->base); } \
static void _t##_collect_tot(struct _t *wf) \
{ wf->base.collect_tot(&wf->base); } \
static void _t##_update_tot(struct _t *wf) \
{ wf->base.update_tot(&wf->base); } \
static int _t##_get_curstat(struct _t *wf, int s, char b[], size_t bs) \
{ return wf->base.get_curstat(&wf->base, s, b, bs); } \
static int _t##_get_totstat(struct _t *wf, int s, char b[], size_t bs) \
{ return wf->base.get_totstat(&wf->base, s, b, bs); } \
static void _t##_print_header(struct _t *wf, FILE *fd) \
{ wf->base.print_header(&wf->base, fd); } \
static void _t##_print_current(struct _t *wf, FILE *fd) \
{ wf->base.print_current(&wf->base, fd); } \
static void _t##_print_total(struct _t *wf, FILE *fd) \
{ wf->base.print_total(&wf->base, fd); } \
static void _t##_print_verbose(struct _t *wf, FILE *fd) \
{ wf->base.print_verbose(&wf->base, fd); } \
static void _t##_print_fields(struct _t *wf, FILE *fd) \
{ wf->base.print_fields(&wf->base, fd); }
#define BSDSTAT_BOUNCE(_p, _t) do { \
_p->base.setfmt = _t##_setfmt; \
_p->base.collect_cur = _t##_collect_cur; \
_p->base.collect_tot = _t##_collect_tot; \
_p->base.update_tot = _t##_update_tot; \
_p->base.get_curstat = _t##_get_curstat; \
_p->base.get_totstat = _t##_get_totstat; \
_p->base.print_header = _t##_print_header; \
_p->base.print_current = _t##_print_current; \
_p->base.print_total = _t##_print_total; \
_p->base.print_verbose = _t##_print_verbose; \
_p->base.print_fields = _t##_print_fields; \
} while (0)
#endif /* _BSDSTAT_H_ */
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