1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
/*! \defgroup timer Osmocom timers
* @{
*/
/*! \file timer.h
* \brief Osmocom timer handling routines
*/
#pragma once
#include <sys/time.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/linuxrbtree.h>
/**
* Timer management:
* - Create a struct osmo_timer_list
* - Fill out timeout and use add_timer or
* use schedule_timer to schedule a timer in
* x seconds and microseconds from now...
* - Use del_timer to remove the timer
*
* Internally:
* - We hook into select.c to give a timeval of the
* nearest timer. On already passed timers we give
* it a 0 to immediately fire after the select
* - update_timers will call the callbacks and remove
* the timers.
*
*/
/*! \brief A structure representing a single instance of a timer */
struct osmo_timer_list {
struct rb_node node; /*!< \brief rb-tree node header */
struct llist_head list; /*!< \brief internal list header */
struct timeval timeout; /*!< \brief expiration time */
unsigned int active : 1; /*!< \brief is it active? */
void (*cb)(void*); /*!< \brief call-back called at timeout */
void *data; /*!< \brief user data for callback */
};
/**
* timer management
*/
void osmo_timer_add(struct osmo_timer_list *timer);
void osmo_timer_schedule(struct osmo_timer_list *timer, int seconds, int microseconds);
void osmo_timer_del(struct osmo_timer_list *timer);
int osmo_timer_pending(struct osmo_timer_list *timer);
int osmo_timer_remaining(const struct osmo_timer_list *timer,
const struct timeval *now,
struct timeval *remaining);
/*
* internal timer list management
*/
struct timeval *osmo_timers_nearest(void);
void osmo_timers_prepare(void);
int osmo_timers_update(void);
int osmo_timers_check(void);
/*! @} */
|
