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/*
* Region Manager
*
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/score/object.h>
#include <rtems/rtems/options.h>
#include <rtems/rtems/region.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
/*PAGE
*
* rtems_region_delete
*
* This directive allows a thread to delete a region specified by
* the region identifier, provided that none of its segments are
* still allocated.
*
* Input parameters:
* id - region id
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_region_delete(
Objects_Id id
)
{
register Region_Control *the_region;
Objects_Locations location;
the_region = _Region_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE: /* this error cannot be returned */
return RTEMS_INTERNAL_ERROR;
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
_Region_Debug_Walk( the_region, 5 );
if ( the_region->number_of_used_blocks == 0 ) {
_Objects_Close( &_Region_Information, &the_region->Object );
_Region_Free( the_region );
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
_Thread_Enable_dispatch();
return RTEMS_RESOURCE_IN_USE;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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