nuttx/libs/libc/pthread/pthread_attr_setinheritsched.c

/****************************************************************************
 * libs/libc/pthread/pthread_attr_setinheritsched.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <pthread.h>
#include <string.h>
#include <debug.h>
#include <errno.h>

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name:  pthread_attr_setinheritsched
 *
 * Description:
 *   Indicate whether the scheduling info in the pthread
 *   attributes will be used or if the thread will
 *   inherit the properties of the parent.
 *
 * Input Parameters:
 *   attr
 *   policy
 *
 * Returned Value:
 *   0 if successful.  Otherwise, an error code.
 *
 * Assumptions:
 *
 ****************************************************************************/

int pthread_attr_setinheritsched(FAR pthread_attr_t *attr,
                                 int inheritsched)
{
  int ret;

  linfo("inheritsched=%d\n", inheritsched);

  if (!attr ||
      (inheritsched != PTHREAD_INHERIT_SCHED &&
       inheritsched != PTHREAD_EXPLICIT_SCHED))
    {
      ret = EINVAL;
    }
  else
    {
      attr->inheritsched = (uint8_t)inheritsched;
      ret = OK;
    }

  linfo("Returning %d\n", ret);
  return ret;
}