1/*-
2 * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/sys/counter.h 349574 2019-07-01 10:09:19Z ae $
27 */
28
29#ifndef __SYS_COUNTER_H__
30#define __SYS_COUNTER_H__
31
32typedef uint64_t *counter_u64_t;
33
34#ifdef _KERNEL
35#include <machine/counter.h>
36
37counter_u64_t	counter_u64_alloc(int);
38void		counter_u64_free(counter_u64_t);
39
40void		counter_u64_zero(counter_u64_t);
41uint64_t	counter_u64_fetch(counter_u64_t);
42
43#define	COUNTER_ARRAY_ALLOC(a, n, wait)	do {			\
44	for (int _i = 0; _i < (n); _i++)			\
45		(a)[_i] = counter_u64_alloc(wait);		\
46} while (0)
47
48#define	COUNTER_ARRAY_FREE(a, n)	do {			\
49	for (int _i = 0; _i < (n); _i++)			\
50		counter_u64_free((a)[_i]);			\
51} while (0)
52
53#define	COUNTER_ARRAY_COPY(a, dstp, n)	do {			\
54	for (int _i = 0; _i < (n); _i++)			\
55		((uint64_t *)(dstp))[_i] = counter_u64_fetch((a)[_i]);\
56} while (0)
57
58#define	COUNTER_ARRAY_ZERO(a, n)	do {			\
59	for (int _i = 0; _i < (n); _i++)			\
60		counter_u64_zero((a)[_i]);			\
61} while (0)
62#endif	/* _KERNEL */
63#endif	/* ! __SYS_COUNTER_H__ */
64