pthread_attr_destroy.c

/*
 * pthread_attr_destroy.c
 *
 * Description:
 * This translation unit implements operations on thread attribute objects.
 *
 * --------------------------------------------------------------------------
 *
 *      Pthreads4w - POSIX Threads for Windows
 *      Copyright 1998 John E. Bossom
 *      Copyright 1999-2018, Pthreads4w contributors
 *
 *      Homepage: https://sourceforge.net/projects/pthreads4w/
 *
 *      The current list of contributors is contained
 *      in the file CONTRIBUTORS included with the source
 *      code distribution. The list can also be seen at the
 *      following World Wide Web location:
 *
 *      https://sourceforge.net/p/pthreads4w/wiki/Contributors/
 *
 * Licensed 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.
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "pthread.h"
#include "implement.h"


int
pthread_attr_destroy (pthread_attr_t * attr)
     /*
      * ------------------------------------------------------
      * DOCPUBLIC
      *      Destroys a thread attributes object.
      *
      * PARAMETERS
      *      attr
      *              pointer to an instance of pthread_attr_t
      *
      *
      * DESCRIPTION
      *      Destroys a thread attributes object.
      *
      *      NOTES:
      *              1)      Does not affect threads created with 'attr'.
      *
      * RESULTS
      *              0               successfully destroyed attr,
      *              EINVAL          'attr' is invalid.
      *
      * ------------------------------------------------------
      */
{
  if (__ptw32_is_attr (attr) != 0)
    {
      return EINVAL;
    }

  /*
   * Set the attribute object to a specific invalid value.
   */
  (*attr)->valid = 0;
  free (*attr);
  *attr = NULL;

  return 0;
}