c4e20cad00
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __SYS_COUNTER_H__
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#define __SYS_COUNTER_H__
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typedef uint64_t *counter_u64_t;
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#ifdef _KERNEL
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#include <machine/counter.h>
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counter_u64_t counter_u64_alloc(int);
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void counter_u64_free(counter_u64_t);
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void counter_u64_zero(counter_u64_t);
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uint64_t counter_u64_fetch(counter_u64_t);
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#define COUNTER_ARRAY_ALLOC(a, n, wait) do { \
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for (int i = 0; i < (n); i++) \
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(a)[i] = counter_u64_alloc(wait); \
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} while (0)
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#define COUNTER_ARRAY_FREE(a, n) do { \
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for (int i = 0; i < (n); i++) \
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counter_u64_free((a)[i]); \
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} while (0)
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#define COUNTER_ARRAY_COPY(a, dstp, n) do { \
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for (int i = 0; i < (n); i++) \
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((uint64_t *)(dstp))[i] = counter_u64_fetch((a)[i]);\
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} while (0)
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#define COUNTER_ARRAY_ZERO(a, n) do { \
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for (int i = 0; i < (n); i++) \
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counter_u64_zero((a)[i]); \
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} while (0)
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/*
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* counter(9) based rate checking.
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*/
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struct counter_rate {
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counter_u64_t cr_rate; /* Events since last second */
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volatile int cr_lock; /* Lock to clean the struct */
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int cr_ticks; /* Ticks on last clean */
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int cr_over; /* Over limit since cr_ticks? */
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};
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int64_t counter_ratecheck(struct counter_rate *, int64_t);
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#endif /* _KERNEL */
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#endif /* ! __SYS_COUNTER_H__ */
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