2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
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
31 #ifndef __SYS_COUNTER_H__
32 #define __SYS_COUNTER_H__
34 typedef uint64_t *counter_u64_t;
37 #include <machine/counter.h>
39 counter_u64_t counter_u64_alloc(int);
40 void counter_u64_free(counter_u64_t);
42 void counter_u64_zero(counter_u64_t);
43 uint64_t counter_u64_fetch(counter_u64_t);
45 #define COUNTER_ARRAY_ALLOC(a, n, wait) do { \
46 for (int _i = 0; _i < (n); _i++) \
47 (a)[_i] = counter_u64_alloc(wait); \
50 #define COUNTER_ARRAY_FREE(a, n) do { \
51 for (int _i = 0; _i < (n); _i++) \
52 counter_u64_free((a)[_i]); \
55 #define COUNTER_ARRAY_COPY(a, dstp, n) do { \
56 for (int _i = 0; _i < (n); _i++) \
57 ((uint64_t *)(dstp))[_i] = counter_u64_fetch((a)[_i]);\
60 #define COUNTER_ARRAY_ZERO(a, n) do { \
61 for (int _i = 0; _i < (n); _i++) \
62 counter_u64_zero((a)[_i]); \
66 * counter(9) based rate checking.
69 counter_u64_t cr_rate; /* Events since last second */
70 volatile int cr_lock; /* Lock to clean the struct */
71 int cr_ticks; /* Ticks on last clean */
72 int cr_over; /* Over limit since cr_ticks? */
75 int64_t counter_ratecheck(struct counter_rate *, int64_t);
78 #endif /* ! __SYS_COUNTER_H__ */