1 | /* $NetBSD: evcnt.h,v 1.8 2011/01/29 18:21:22 matt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1996, 2000 Christopher G. Demetriou |
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 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. All advertising materials mentioning features or use of this software |
16 | * must display the following acknowledgement: |
17 | * This product includes software developed for the |
18 | * NetBSD Project. See http://www.NetBSD.org/ for |
19 | * information about NetBSD. |
20 | * 4. The name of the author may not be used to endorse or promote products |
21 | * derived from this software without specific prior written permission. |
22 | * |
23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
24 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
25 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
26 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
27 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
28 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
29 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
30 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
32 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
33 | * |
34 | * --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )-- |
35 | */ |
36 | |
37 | /* |
38 | * Copyright (c) 1992, 1993 |
39 | * The Regents of the University of California. All rights reserved. |
40 | * |
41 | * This software was developed by the Computer Systems Engineering group |
42 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
43 | * contributed to Berkeley. |
44 | * |
45 | * All advertising materials mentioning features or use of this software |
46 | * must display the following acknowledgement: |
47 | * This product includes software developed by the University of |
48 | * California, Lawrence Berkeley Laboratories. |
49 | * |
50 | * Redistribution and use in source and binary forms, with or without |
51 | * modification, are permitted provided that the following conditions |
52 | * are met: |
53 | * 1. Redistributions of source code must retain the above copyright |
54 | * notice, this list of conditions and the following disclaimer. |
55 | * 2. Redistributions in binary form must reproduce the above copyright |
56 | * notice, this list of conditions and the following disclaimer in the |
57 | * documentation and/or other materials provided with the distribution. |
58 | * 3. Neither the name of the University nor the names of its contributors |
59 | * may be used to endorse or promote products derived from this software |
60 | * without specific prior written permission. |
61 | * |
62 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
63 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
64 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
65 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
66 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
67 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
68 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
69 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
70 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
71 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
72 | * SUCH DAMAGE. |
73 | */ |
74 | |
75 | #ifndef _SYS_EVCNT_H_ |
76 | #define _SYS_EVCNT_H_ |
77 | |
78 | #include <sys/queue.h> |
79 | #include <sys/stdint.h> |
80 | |
81 | /* |
82 | * event counters |
83 | */ |
84 | |
85 | struct evcnt { |
86 | uint64_t ev_count; /* how many have occurred */ |
87 | TAILQ_ENTRY(evcnt) ev_list; /* entry on list of all counters */ |
88 | unsigned char ev_type; /* counter type; see below */ |
89 | unsigned char ev_grouplen; /* 'group' len, excluding NUL */ |
90 | unsigned char ev_namelen; /* 'name' len, excluding NUL */ |
91 | char ev_pad1; /* reserved (for now); 0 */ |
92 | const struct evcnt *ev_parent; /* parent, for hierarchical ctrs */ |
93 | const char *ev_group; /* name of group */ |
94 | const char *ev_name; /* name of specific event */ |
95 | }; |
96 | TAILQ_HEAD(evcntlist, evcnt); |
97 | |
98 | /* maximum group/name lengths, including trailing NUL */ |
99 | #define EVCNT_STRING_MAX 255 |
100 | |
101 | /* ev_type values */ |
102 | #define EVCNT_TYPE_ANY -1 /* for sysctl */ |
103 | #define EVCNT_TYPE_MISC 0 /* miscellaneous; catch all */ |
104 | #define EVCNT_TYPE_INTR 1 /* interrupt; count with vmstat -i */ |
105 | #define EVCNT_TYPE_TRAP 2 /* processor trap/execption */ |
106 | |
107 | /* |
108 | * initializer for an event count structure. the lengths are initted and |
109 | * it is added to the evcnt list at attach time. |
110 | */ |
111 | #define EVCNT_INITIALIZER(type, parent, group, name) \ |
112 | { \ |
113 | .ev_type = type, \ |
114 | .ev_parent = parent, \ |
115 | .ev_group = group, \ |
116 | .ev_name = name, \ |
117 | } |
118 | |
119 | /* |
120 | * Attach a static event counter. This uses a link set to do the work. |
121 | * NOTE: "ev" should not be a pointer to the object, but rather a direct |
122 | * reference to the object itself. |
123 | */ |
124 | #define EVCNT_ATTACH_STATIC(ev) __link_set_add_data(evcnts, ev) |
125 | #define EVCNT_ATTACH_STATIC2(ev, n) __link_set_add_data2(evcnts, ev, n) |
126 | |
127 | #ifdef _KERNEL |
128 | |
129 | extern struct evcntlist allevents; /* list of all event counters */ |
130 | |
131 | void evcnt_init(void); |
132 | void evcnt_attach_static(struct evcnt *); |
133 | void evcnt_attach_dynamic_nozero(struct evcnt *, int, const struct evcnt *, |
134 | const char *, const char *); |
135 | void evcnt_attach_dynamic(struct evcnt *, int, const struct evcnt *, |
136 | const char *, const char *); |
137 | void evcnt_detach(struct evcnt *); |
138 | #endif /* _KERNEL */ |
139 | |
140 | #endif /* !_SYS_EVCNT_H_ */ |
141 | |