1 /*
2  * Copyright (C) 2013 The Android Open Source Project
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *  * Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  *  * Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *    the documentation and/or other materials provided with the
13  *    distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #ifndef _SYS_TIMERFD_H_
30 #define _SYS_TIMERFD_H_
31 
32 #include <fcntl.h> /* For O_CLOEXEC and O_NONBLOCK. */
33 #include <time.h>
34 #include <sys/types.h>
35 
36 __BEGIN_DECLS
37 
38 #define TFD_TIMER_ABSTIME (1 << 0)
39 #define TFD_TIMER_CANCEL_ON_SET (1 << 1)
40 
41 #define TFD_CLOEXEC O_CLOEXEC
42 #define TFD_NONBLOCK O_NONBLOCK
43 
44 extern int timerfd_create(clockid_t, int);
45 extern int timerfd_settime(int, int, const struct itimerspec*,
46                            struct itimerspec*);
47 extern int timerfd_gettime(int, struct itimerspec*);
48 
49 __END_DECLS
50 
51 #endif /* _SYS_TIMERFD_H */
52