Annotation of sys/sys/evcount.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: evcount.h,v 1.2 2004/09/29 07:37:07 miod Exp $ */
2: /*
3: * Copyright (c) 2004 Artur Grabowski <art@openbsd.org>
4: * Copyright (c) 2004 Aaron Campbell <aaron@openbsd.org>
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: *
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. The name of the author may not be used to endorse or promote products
14: * derived from this software without specific prior written permission.
15: *
16: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
18: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
19: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: */
27:
28: #ifndef __SYS_EVCOUNT_H__
29: #define __SYS_EVCOUNT_H__
30:
31: #ifdef _KERNEL
32:
33: #include <sys/queue.h>
34:
35: struct evcount {
36: u_int64_t ec_count; /* main counter */
37: int ec_id; /* counter ID */
38: const char *ec_name; /* counter name */
39: struct evcount *ec_parent; /* parent */
40: void *ec_data; /* user data */
41:
42: TAILQ_ENTRY(evcount) next;
43: };
44:
45: void evcount_attach(struct evcount *, const char *, void *, struct evcount *);
46: void evcount_detach(struct evcount *);
47: int evcount_sysctl(int *, u_int, void *, size_t *, void *, size_t);
48:
49: /*
50: * Standard evcount parents.
51: */
52: extern struct evcount evcount_intr;
53:
54: #endif /* _KERNEL */
55:
56: #endif
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