Line data    Source code

       1             : /* Copyright (C) 2008-2022 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             :    <https://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'.  */
      29             : enum
      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.  */
      41           0 : extern 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.  */
      46             : extern int timerfd_settime (int __ufd, int __flags,
      47             :                             const struct itimerspec *__utmr,
      48             :                             struct itimerspec *__otmr) __THROW;
      49             : 
      50             : #ifdef __USE_TIME_BITS64
      51             : # if defined(__REDIRECT_NTH)
      52             : extern int __REDIRECT_NTH (timerfd_settime,
      53             :                            (int __ufd, int __flags,
      54             :                             const struct itimerspec *__restrict __value,
      55             :                             struct itimerspec *__restrict __ovalue),
      56             :                            __timerfd_settime64);
      57             : # else
      58             : # define timerfd_settime __timerfd_settime64
      59             : # endif
      60             : #endif
      61             : 
      62             : /* Return the next expiration time of UFD.  */
      63             : extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
      64             : 
      65             : #ifdef __USE_TIME_BITS64
      66             : # if defined(__REDIRECT_NTH)
      67             : extern int __REDIRECT_NTH (timerfd_gettime, (int __ufd,
      68             :                                              struct itimerspec *__otmr),
      69             :                            __timerfd_gettime64);
      70             : # else
      71             : # define timerfd_gettime __timerfd_gettime64
      72             : # endif
      73             : #endif
      74             : 
      75             : __END_DECLS
      76             : 
      77             : #endif /* sys/timerfd.h */