FreeBSD/Linux Kernel Cross Reference
sys/sys/_callout.h
1 /*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)callout.h 8.2 (Berkeley) 1/21/94
35 * $FreeBSD$
36 */
37
38 #ifndef _SYS__CALLOUT_H
39 #define _SYS__CALLOUT_H
40
41 #include <sys/queue.h>
42
43 struct lock_object;
44
45 LIST_HEAD(callout_list, callout);
46 SLIST_HEAD(callout_slist, callout);
47 TAILQ_HEAD(callout_tailq, callout);
48
49 typedef void callout_func_t(void *);
50
51 struct callout {
52 union {
53 LIST_ENTRY(callout) le;
54 SLIST_ENTRY(callout) sle;
55 TAILQ_ENTRY(callout) tqe;
56 } c_links;
57 sbintime_t c_time; /* ticks to the event */
58 sbintime_t c_precision; /* delta allowed wrt opt */
59 void *c_arg; /* function argument */
60 callout_func_t *c_func; /* function to call */
61 struct lock_object *c_lock; /* lock to handle */
62 short c_flags; /* User State */
63 short c_iflags; /* Internal State */
64 volatile int c_cpu; /* CPU we're scheduled on */
65 };
66
67 #endif
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