posix/nanosleep.c

   1 /* Copyright (C) 1996-2022 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 #include <errno.h>
  19 #include <time.h>
  20
  21
  22 /* Pause execution for a number of nanoseconds.  */
  23 int
  24 __nanosleep (const struct timespec *requested_time,
  25              struct timespec *remaining)
  26 {
  27   int ret = __clock_nanosleep (CLOCK_REALTIME, 0, requested_time, remaining);
  28   if (ret != 0)
  29     {
  30       __set_errno (ret);
  31       return -1;
  32     }
  33   return 0;
  34 }
  35 libc_hidden_def (__nanosleep)
  36 weak_alias (__nanosleep, nanosleep)