FreeBSD/Linux Kernel Cross Reference
sys/sys/counter.h
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: releng/10.0/sys/sys/counter.h 253082 2013-07-09 09:37:21Z ae $
27 */
28
29 #ifndef __SYS_COUNTER_H__
30 #define __SYS_COUNTER_H__
31
32 typedef uint64_t *counter_u64_t;
33
34 #include <machine/counter.h>
35
36 counter_u64_t counter_u64_alloc(int);
37 void counter_u64_free(counter_u64_t);
38
39 void counter_u64_zero(counter_u64_t);
40 uint64_t counter_u64_fetch(counter_u64_t);
41
42 #define COUNTER_ARRAY_ALLOC(a, n, wait) do { \
43 for (int i = 0; i < (n); i++) \
44 (a)[i] = counter_u64_alloc(wait); \
45 } while (0)
46
47 #define COUNTER_ARRAY_FREE(a, n) do { \
48 for (int i = 0; i < (n); i++) \
49 counter_u64_free((a)[i]); \
50 } while (0)
51
52 #define COUNTER_ARRAY_COPY(a, dstp, n) do { \
53 for (int i = 0; i < (n); i++) \
54 ((uint64_t *)(dstp))[i] = counter_u64_fetch((a)[i]);\
55 } while (0)
56
57 #define COUNTER_ARRAY_ZERO(a, n) do { \
58 for (int i = 0; i < (n); i++) \
59 counter_u64_zero((a)[i]); \
60 } while (0)
61 #endif /* ! __SYS_COUNTER_H__ */
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