path: root/cpukit/posix/src/keydelete.c

/**
 * @file
 *
 * @brief Deletes Thread-specific Data Key Previously Returned by keycreate.c
 * @ingroup POSIXAPI
 */

/*
 * COPYRIGHT (c) 1989-2007.
 * On-Line Applications Research Corporation (OAR).
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <errno.h>
#include <limits.h>
#include <pthread.h>
#include <string.h>

#include <rtems/system.h>
#include <rtems/score/thread.h>
#include <rtems/score/wkspace.h>
#include <rtems/posix/keyimpl.h>

/*
 *  17.1.3 Thread-Specific Data Key Deletion, P1003.1c/Draft 10, p. 167
 */
int pthread_key_delete(
  pthread_key_t  key
)
{
  POSIX_Keys_Control *the_key;
  Objects_Locations   location;

  _Objects_Allocator_lock();
  the_key = _POSIX_Keys_Get( key, &location );
  switch ( location ) {

    case OBJECTS_LOCAL:
      _POSIX_Keys_Free_memory( the_key );

      /*
       *  NOTE:  The destructor is not called and it is the responsibility
       *         of the application to free the memory.
       */
      _POSIX_Keys_Free( the_key );
      _Objects_Put(&the_key->Object);
      _Objects_Allocator_unlock();
      return 0;

#if defined(RTEMS_MULTIPROCESSING)
    case OBJECTS_REMOTE:   /* should never happen */
#endif
    case OBJECTS_ERROR:
      break;
  }

  _Objects_Allocator_unlock();

  return EINVAL;
}