text: /****************************************************************************
   * libs/libc/pthread/pthread_setcanceltype.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 <pthread.h>
  #include <sched.h>
  #include <errno.h>
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* The following are defined in different header files but must have the
   * same values.
   */
  
  #if PTHREAD_CANCEL_DEFERRED != TASK_CANCEL_DEFERRED
  #  error We must have  PTHREAD_CANCEL_DEFERRED == TASK_CANCEL_DEFERRED
  #endif
  
  #if PTHREAD_CANCEL_ASYNCHRONOUS != TASK_CANCEL_ASYNCHRONOUS
  #  error We must have  PTHREAD_CANCEL_ASYNCHRONOUS == TASK_CANCEL_ASYNCHRONOUS
  #endif
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: pthread_setcancelstate
   *
   * Description:
   *   The pthread_setcanceltype() function atomically both sets the calling
   *   thread's cancelability type to the indicated type and returns the
   *   previous cancelability type at the location referenced by oldtype
   *   Legal values for type are PTHREAD_CANCEL_DEFERRED and
   *   PTHREAD_CANCEL_ASYNCHRONOUS.
   *
   *   The cancelability state and type of any newly created threads,
   *   including the thread in which main() was first invoked, are
   *   PTHREAD_CANCEL_ENABLE and PTHREAD_CANCEL_DEFERRED respectively.
   *
   ****************************************************************************/
  
  int pthread_setcanceltype(int type, FAR int *oldtype)
  {
    int ret;
  
    /* task_setcanceltype() can do this */
  
    ret = task_setcanceltype(type, oldtype);
    if (ret < 0)
      {
        ret = get_errno();
      }
  
    return ret;
  }
  