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[openwrt/svn-archive/archive.git] / package / libtapi / src / timerfd.h
1 /* Copyright (C) 2008 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C 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 2.1 of the License, or (at your option) any later version.
8
9 The GNU C 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 the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
18
19 #ifndef _SYS_TIMERFD_H
20 #define _SYS_TIMERFD_H 1
21
22 #include <time.h>
23
24
25 /* Bits to be set in the FLAGS parameter of `timerfd_create'. */
26 enum
27 {
28 TFD_CLOEXEC = 02000000,
29 #define TFD_CLOEXEC TFD_CLOEXEC
30 TFD_NONBLOCK = 04000
31 #define TFD_NONBLOCK TFD_NONBLOCK
32 };
33
34
35 /* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
36 enum
37 {
38 TFD_TIMER_ABSTIME = 1 << 0
39 #define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
40 };
41
42
43 __BEGIN_DECLS
44
45 /* Return file descriptor for new interval timer source. */
46 extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW;
47
48 /* Set next expiration time of interval timer source UFD to UTMR. If
49 FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
50 absolute. Optionally return the old expiration time in OTMR. */
51 extern int timerfd_settime (int __ufd, int __flags,
52 __const struct itimerspec *__utmr,
53 struct itimerspec *__otmr) __THROW;
54
55 /* Return the next expiration time of UFD. */
56 extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
57
58 __END_DECLS
59
60 #endif /* sys/timerfd.h */
61