source: rtems-libbsd/freebsd/sys/sys/callout.h @ 66659ff

4.115-freebsd-12freebsd-9.3
Last change on this file since 66659ff was 66659ff, checked in by Sebastian Huber <sebastian.huber@…>, on Nov 6, 2013 at 3:20:21 PM

Update to FreeBSD 9.2

  • Property mode set to 100644
File size: 3.9 KB
Line 
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/_callout.h>
42
43#define CALLOUT_LOCAL_ALLOC     0x0001 /* was allocated from callfree */
44#define CALLOUT_ACTIVE          0x0002 /* callout is currently active */
45#define CALLOUT_PENDING         0x0004 /* callout is waiting for timeout */
46#define CALLOUT_MPSAFE          0x0008 /* callout handler is mp safe */
47#define CALLOUT_RETURNUNLOCKED  0x0010 /* handler returns with mtx unlocked */
48#define CALLOUT_SHAREDLOCK      0x0020 /* callout lock held in shared mode */
49#define CALLOUT_DFRMIGRATION    0x0040 /* callout in deferred migration mode */
50
51struct callout_handle {
52        struct callout *callout;
53};
54
55#ifdef _KERNEL
56extern int ncallout;
57
58#define callout_active(c)       ((c)->c_flags & CALLOUT_ACTIVE)
59#define callout_deactivate(c)   ((c)->c_flags &= ~CALLOUT_ACTIVE)
60#define callout_drain(c)        _callout_stop_safe(c, 1)
61void    callout_init(struct callout *, int);
62void    _callout_init_lock(struct callout *, struct lock_object *, int);
63#define callout_init_mtx(c, mtx, flags)                                 \
64        _callout_init_lock((c), ((mtx) != NULL) ? &(mtx)->lock_object : \
65            NULL, (flags))
66#define callout_init_rw(c, rw, flags)                                   \
67        _callout_init_lock((c), ((rw) != NULL) ? &(rw)->lock_object :   \
68           NULL, (flags))
69#define callout_pending(c)      ((c)->c_flags & CALLOUT_PENDING)
70int     callout_reset_on(struct callout *, int, void (*)(void *), void *, int);
71#define callout_reset(c, on_tick, fn, arg)                              \
72    callout_reset_on((c), (on_tick), (fn), (arg), (c)->c_cpu)
73#define callout_reset_curcpu(c, on_tick, fn, arg)                       \
74    callout_reset_on((c), (on_tick), (fn), (arg), PCPU_GET(cpuid))
75int     callout_schedule(struct callout *, int);
76int     callout_schedule_on(struct callout *, int, int);
77#define callout_schedule_curcpu(c, on_tick)                             \
78    callout_schedule_on((c), (on_tick), PCPU_GET(cpuid))
79#define callout_stop(c)         _callout_stop_safe(c, 0)
80int     _callout_stop_safe(struct callout *, int);
81void    callout_tick(void);
82int     callout_tickstofirst(int limit);
83extern void (*callout_new_inserted)(int cpu, int ticks);
84
85#endif
86
87#endif /* _SYS_CALLOUT_H_ */
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