1/*- 2 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting 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 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD$ 30 */ 31 32#ifndef _STATFOO_H_ 33#define _STATFOO_H_ 34/* 35 * Base class for managing+displaying periodically collected statistics. 36 */ 37 38/* 39 * Statistic definition/description. The are defined 40 * for stats that correspond 1-1 w/ a collected stat 41 * and for stats that are calculated indirectly. 42 */ 43struct fmt { 44 int width; /* printed field width */ 45 const char* name; /* stat field name referenced by user */ 46 const char* label; /* printed header label */ 47 const char* desc; /* verbose description */ 48}; 49 50#define STATFOO_DECL_METHODS(_p) \ 51 /* set the format of the statistics to display */ \ 52 void (*setfmt)(_p, const char *); \ 53 /* collect+store ``current statistics'' */ \ 54 void (*collect_cur)(_p); \ 55 /* collect+store ``total statistics'' */ \ 56 void (*collect_tot)(_p); \ 57 /* update ``total statistics'' if necessary from current */ \ 58 void (*update_tot)(_p); \ 59 /* format a statistic from the current stats */ \ 60 int (*get_curstat)(_p, int, char [], size_t); \ 61 /* format a statistic from the total stats */ \ 62 int (*get_totstat)(_p, int, char [], size_t); \ 63 /* print field headers terminated by a \n */ \ 64 void (*print_header)(_p, FILE *); \ 65 /* print current statistics terminated by a \n */ \ 66 void (*print_current)(_p, FILE *); \ 67 /* print total statistics terminated by a \n */ \ 68 void (*print_total)(_p, FILE *); \ 69 /* print total statistics in a verbose (1 stat/line) format */ \ 70 void (*print_verbose)(_p, FILE *); \ 71 /* print available statistics */ \ 72 void (*print_fields)(_p, FILE *) 73 74/* 75 * Statistics base class. This class is not usable; only 76 * classes derived from it are useful. 77 */ 78struct statfoo { 79 const char *name; /* statistics name, e.g. wlanstats */ 80 const struct fmt *stats; /* statistics in class */ 81 int nstats; /* number of stats */ 82 unsigned char fmts[4096]; /* private: compiled stats to display */ 83 84 STATFOO_DECL_METHODS(struct statfoo *); 85}; 86 87void statfoo_init(struct statfoo *, const char *name, 88 const struct fmt *stats, int nstats); 89 90#define STATFOO_DEFINE_BOUNCE(_t) \ 91static void _t##_setfmt(struct _t *wf, const char *fmt0) \ 92 { wf->base.setfmt(&wf->base, fmt0); } \ 93static void _t##_collect_cur(struct _t *wf) \ 94 { wf->base.collect_cur(&wf->base); } \ 95static void _t##_collect_tot(struct _t *wf) \ 96 { wf->base.collect_tot(&wf->base); } \ 97static void _t##_update_tot(struct _t *wf) \ 98 { wf->base.update_tot(&wf->base); } \ 99static int _t##_get_curstat(struct _t *wf, int s, char b[], size_t bs) \ 100 { return wf->base.get_curstat(&wf->base, s, b, bs); } \ 101static int _t##_get_totstat(struct _t *wf, int s, char b[], size_t bs) \ 102 { return wf->base.get_totstat(&wf->base, s, b, bs); } \ 103static void _t##_print_header(struct _t *wf, FILE *fd) \ 104 { wf->base.print_header(&wf->base, fd); } \ 105static void _t##_print_current(struct _t *wf, FILE *fd) \ 106 { wf->base.print_current(&wf->base, fd); } \ 107static void _t##_print_total(struct _t *wf, FILE *fd) \ 108 { wf->base.print_total(&wf->base, fd); } \ 109static void _t##_print_verbose(struct _t *wf, FILE *fd) \ 110 { wf->base.print_verbose(&wf->base, fd); } \ 111static void _t##_print_fields(struct _t *wf, FILE *fd) \ 112 { wf->base.print_fields(&wf->base, fd); } 113 114#define STATFOO_BOUNCE(_p, _t) do { \ 115 _p->base.setfmt = _t##_setfmt; \ 116 _p->base.collect_cur = _t##_collect_cur; \ 117 _p->base.collect_tot = _t##_collect_tot; \ 118 _p->base.update_tot = _t##_update_tot; \ 119 _p->base.get_curstat = _t##_get_curstat; \ 120 _p->base.get_totstat = _t##_get_totstat; \ 121 _p->base.print_header = _t##_print_header; \ 122 _p->base.print_current = _t##_print_current; \ 123 _p->base.print_total = _t##_print_total; \ 124 _p->base.print_verbose = _t##_print_verbose; \ 125 _p->base.print_fields = _t##_print_fields; \ 126} while (0) 127#endif /* _STATFOO_H_ */ 128