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01: /* Copyright (C) 2008 Free Software Foundation, Inc.
02:    This file is part of the GNU C Library.
03: 
04:    The GNU C Library is free software; you can redistribute it and/or
05:    modify it under the terms of the GNU Lesser General Public
06:    License as published by the Free Software Foundation; either
07:    version 2.1 of the License, or (at your option) any later version.
08: 
09:    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: 

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