sysdeps/nacl/pthread_condattr_setclock.c

   1 /* Set the clock for timeouts on a condition variable.  NaCl version.
   2    Copyright (C) 2015-2016 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include "pthreadP.h"
  21
  22
  23 int
  24 pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock_id)
  25 {
  26   switch (clock_id)
  27     {
  28     case CLOCK_REALTIME:
  29       /* This is the default state and the only one actually supported.  */
  30       return 0;
  31
  32     case CLOCK_MONOTONIC:
  33       /* NaCl recognizes CLOCK_MONOTONIC for other purposes, so it is a
  34          "known clock".  But NaCl doesn't support it for this purpose.  */
  35       return ENOTSUP;
  36
  37     default:
  38       /* The only other recognized clocks are CPU-time clocks,
  39          which POSIX says should get EINVAL.  */
  40       return EINVAL;
  41     }
  42 }