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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