Xenomai  3.0.8
timerobj.h
1 /*
2  * Copyright (C) 2010 Philippe Gerum <rpm@xenomai.org>.
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13 
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17  */
18 
19 #ifndef _COPPERPLATE_TIMEROBJ_H
20 #define _COPPERPLATE_TIMEROBJ_H
21 
22 #include <pthread.h>
23 #include <time.h>
24 #include <boilerplate/list.h>
25 #include <boilerplate/lock.h>
26 
27 struct timerobj {
28  struct itimerspec itspec;
29  void (*handler)(struct timerobj *tmobj);
30  timer_t timer;
31  pthread_mutex_t lock;
32  int cancel_state;
33  struct pvholder next;
34 };
35 
36 static inline int timerobj_lock(struct timerobj *tmobj)
37 {
38  return write_lock_safe(&tmobj->lock, tmobj->cancel_state);
39 }
40 
41 static inline int timerobj_unlock(struct timerobj *tmobj)
42 {
43  return write_unlock_safe(&tmobj->lock, tmobj->cancel_state);
44 }
45 
46 static inline int timerobj_enabled(const struct timerobj *tmobj)
47 {
48  return tmobj->handler != NULL;
49 }
50 
51 #ifdef __cplusplus
52 extern "C" {
53 #endif
54 
55 int timerobj_init(struct timerobj *tmobj);
56 
57 void timerobj_destroy(struct timerobj *tmobj);
58 
59 int timerobj_start(struct timerobj *tmobj,
60  void (*handler)(struct timerobj *tmobj),
61  struct itimerspec *it);
62 
63 int timerobj_stop(struct timerobj *tmobj);
64 
65 int timerobj_pkg_init(void);
66 
67 #ifdef __cplusplus
68 }
69 #endif
70 
71 #endif /* _COPPERPLATE_TIMEROBJ_H */