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/* $OpenBSD: evcount.h,v 1.3 2010/09/20 06:33:46 matthew Exp $ */
/*
* Copyright (c) 2004 Artur Grabowski <art@openbsd.org>
* Copyright (c) 2004 Aaron Campbell <aaron@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __SYS_EVCOUNT_H__
#define __SYS_EVCOUNT_H__
#ifdef _KERNEL
#include <sys/queue.h>
struct evcount {
u_int64_t ec_count; /* main counter */
int ec_id; /* counter ID */
const char *ec_name; /* counter name */
void *ec_data; /* user data */
TAILQ_ENTRY(evcount) next;
};
void evcount_attach(struct evcount *, const char *, void *);
void evcount_detach(struct evcount *);
int evcount_sysctl(int *, u_int, void *, size_t *, void *, size_t);
#endif /* _KERNEL */
#endif
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