text: /*
   * File      : sched.c
   * This file is part of RT-Thread RTOS
   * COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along
   *  with this program; if not, write to the Free Software Foundation, Inc.,
   *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Change Logs:
   * Date           Author       Notes
   */
  
  #include <sched.h>
  
  int sched_yield(void)
  {
      rt_thread_yield();
  
      return 0;
  }
  RTM_EXPORT(sched_yield);
  
  int sched_get_priority_min(int policy)
  {
      if (policy != SCHED_FIFO && policy != SCHED_RR)
          return EINVAL;
  
      return 0;
  }
  RTM_EXPORT(sched_get_priority_min);
  
  int sched_get_priority_max(int policy)
  {
      if (policy != SCHED_FIFO && policy != SCHED_RR)
          return EINVAL;
  
      return RT_THREAD_PRIORITY_MAX - 1;
  }
  RTM_EXPORT(sched_get_priority_max);
  
  int sched_setscheduler(pid_t pid, int policy)
  {
      return EOPNOTSUPP;
  }
  RTM_EXPORT(sched_setscheduler);
  