1 /* Copyright (C) 2008, 2012 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 23 /* Get the platform-dependent flags. */ 24 #include <bits/timerfd.h> 25 26 27 /* Bits to be set in the FLAGS parameter of `timerfd_settime'. */ 28 enum 29 { 30 TFD_TIMER_ABSTIME = 1 << 0 31 #define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME 32 }; 33 34 35 __BEGIN_DECLS 36 37 /* Return file descriptor for new interval timer source. */ 38 extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW; 39 40 /* Set next expiration time of interval timer source UFD to UTMR. If 41 FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is 42 absolute. Optionally return the old expiration time in OTMR. */ 43 extern int timerfd_settime (int __ufd, int __flags, 44 const struct itimerspec *__utmr, 45 struct itimerspec *__otmr) __THROW; 46 47 /* Return the next expiration time of UFD. */ 48 extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW; 49 50 __END_DECLS 51 52 #endif /* sys/timerfd.h */ 53