File: timer_proc.h

package info (click to toggle)
kamailio 4.2.0-2+deb8u3
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 56,276 kB
  • sloc: ansic: 552,836; xml: 166,484; sh: 8,659; makefile: 7,676; sql: 6,235; perl: 3,487; yacc: 3,428; python: 1,457; cpp: 1,219; php: 1,047; java: 449; pascal: 194; cs: 40; awk: 27
file content (133 lines) | stat: -rw-r--r-- 5,006 bytes parent folder | download | duplicates (2)
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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/* 
 * Copyright (C) 2009 iptelorg GmbH
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * History:
 * --------
 *  2009-03-10  initial version (andrei)
*/

/**
 * @file
 * @brief SIP-router core :: timer_proc.h - separate process timers
 *
 * (unrelated to the main fast and slow timers)
 * @ingroup core
 * Module: @ref core
 */

#ifndef __timer_proc_h
#define __timer_proc_h

#include "local_timer.h"

/**
 * \brief update internal counters for running new basic sec. timers
 * @param timers number of basic timer processes
 * @return 0 on success; -1 on error
 */
int register_basic_timers(int timers);

#define register_dummy_timers register_basic_timers

#define register_basic_utimers register_basic_utimers

/**
 * \brief Forks a separate simple sleep() periodic timer
 * 
 * Forks a very basic periodic timer process, that just sleep()s for 
 * the specified interval and then calls the timer function.
 * The new "basic timer" process execution start immediately, the sleep()
 * is called first (so the first call to the timer function will happen
 * \<interval\> seconds after the call to fork_basic_timer)
 * @param child_id  @see fork_process()
 * @param desc      @see fork_process()
 * @param make_sock @see fork_process()
 * @param f         timer function/callback
 * @param param     parameter passed to the timer function
 * @param interval  interval in seconds.
 * @return pid of the new process on success, -1 on error
 * (doesn't return anything in the child process)
 */
int fork_basic_timer(int child_id, char* desc, int make_sock,
						timer_function* f, void* param, int interval);

#define fork_dummy_timer fork_basic_timer

/**
 * \brief Forks a separate simple milisecond-sleep() periodic timer
 * 
 * Forks a very basic periodic timer process, that just ms-sleep()s for 
 * the specified interval and then calls the timer function.
 * The new "basic timer" process execution start immediately, the ms-sleep()
 * is called first (so the first call to the timer function will happen
 * \<interval\> seconds after the call to fork_basic_utimer)
 * @param child_id  @see fork_process()
 * @param desc      @see fork_process()
 * @param make_sock @see fork_process()
 * @param f         timer function/callback
 * @param param     parameter passed to the timer function
 * @param uinterval  interval in mili-seconds.
 * @return pid of the new process on success, -1 on error
 * (doesn't return anything in the child process)
 */
int fork_basic_utimer(int child_id, char* desc, int make_sock,
						timer_function* f, void* param, int uinterval);
/**
 * \brief Forks a timer process based on the local timer
 * 
 * Forks a separate timer process running a local_timer.h type of timer
 * A pointer to the local_timer handle (allocated in shared memory) is
 * returned in lt_h. It can be used to add/delete more timers at runtime
 * (via local_timer_add()/local_timer_del() a.s.o).
 * If timers are added from separate processes, some form of locking must be
 * used (all the calls to local_timer* must be enclosed by locks if it
 * cannot be guaranteed that they cannot execute in the same time)
 * The timer "engine" must be run manually from the child process. For
 * example a very simple local timer process that just runs a single 
 * periodic timer can be started in the following way:
 * struct local_timer* lt_h;
 * 
 * pid=fork_local_timer_process(...., &lt_h);
 * if (pid==0){
 *          timer_init(&my_timer, my_timer_f, 0, 0);
 *          local_timer_add(&lt_h, &my_timer, S_TO_TICKS(10), get_ticks_raw());
 *          while(1) { sleep(1); local_timer_run(lt, get_ticks_raw()); }
 * }
 *
 * @param child_id  @see fork_process()
 * @param desc      @see fork_process()
 * @param make_sock @see fork_process()
 * @param lt_h      local_timer handler
 * @return pid to the parent, 0 to the child, -1 if error.
 */
int fork_local_timer_process(int child_id, char* desc, int make_sock,
						struct local_timer** lt_h);

/**
 * sync timers
 */
int register_sync_timers(int timers);

int fork_sync_timer(int child_id, char* desc, int make_sock,
						timer_function* f, void* param, int interval);

int fork_sync_utimer(int child_id, char* desc, int make_sock,
						utimer_function* f, void* param, int uinterval);

#endif /*__timer_proc_h*/

/* vi: set ts=4 sw=4 tw=79:ai:cindent: */