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1/* Copyright (C) 2008-2018 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, see
16 <http://www.gnu.org/licenses/>. */
17
18#ifndef _SYS_TIMERFD_H
19#define _SYS_TIMERFD_H 1
20
21#include <time.h>
22#include <bits/types/struct_itimerspec.h>
23
24/* Get the platform-dependent flags. */
25#include <bits/timerfd.h>
26
27
28/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
29enum
30 {
31 TFD_TIMER_ABSTIME = 1 << 0,
32#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
33 TFD_TIMER_CANCEL_ON_SET = 1 << 1
34#define TFD_TIMER_CANCEL_ON_SET TFD_TIMER_CANCEL_ON_SET
35 };
36
37
38__BEGIN_DECLS
39
40/* Return file descriptor for new interval timer source. */
41extern int timerfd_create (__clockid_t __clock_id, int __flags) __THROW;
42
43/* Set next expiration time of interval timer source UFD to UTMR. If
44 FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
45 absolute. Optionally return the old expiration time in OTMR. */
46extern int timerfd_settime (int __ufd, int __flags,
47 const struct itimerspec *__utmr,
48 struct itimerspec *__otmr) __THROW;
49
50/* Return the next expiration time of UFD. */
51extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
52
53__END_DECLS
54
55#endif /* sys/timerfd.h */
56

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