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_settime'. */ 26 enum 27 { 28 TFD_TIMER_ABSTIME = 1 << 0 29 #define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME 30 }; 31 32 33 __BEGIN_DECLS 34 35 /* Return file descriptor for new interval timer source. */ 36 extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW; 37 38 /* Set next expiration time of interval timer source UFD to UTMR. If 39 FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is 40 absolute. Optionally return the old expiration time in OTMR. */ 41 extern int timerfd_settime (int __ufd, int __flags, 42 __const struct itimerspec *__utmr, 43 struct itimerspec *__otmr) __THROW; 44 45 /* Return the next expiration time of UFD. */ 46 extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW; 47 48 __END_DECLS 49 50 #endif /* sys/timerfd.h */ 51