sysdeps/pthread/thrd_sleep.c

   1 /* C11 threads thread sleep implementation.
   2    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <time.h>
  20 #include <sysdep-cancel.h>
  21
  22 #include "thrd_priv.h"
  23
  24 int
  25 thrd_sleep (const struct timespec* time_point, struct timespec* remaining)
  26 {
  27   int ret = __clock_nanosleep (CLOCK_REALTIME, 0, time_point, remaining);
  28   /* C11 states thrd_sleep function returns -1 if it has been interrupted
  29      by a signal, or a negative value if it fails.  */
  30   switch (ret)
  31   {
  32      case 0:      return 0;
  33      case EINTR:  return -1;
  34      default:     return -2;
  35   }
  36 }