blob: 52b7135f755914057fa00fa0c97a3fbef984c2f2 (
plain) (
tree)
|
|
/*
* Region Manager
*
*
* 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.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#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/apimutex.h>
#include <rtems/score/thread.h>
/*
* rtems_region_get_free_information
*
* This directive will return information about the free blocks
* in the region specified. Information about the used blocks
* will be returned as zero.
*
* Input parameters:
* id - region id
* the_info - pointer to region information block
*
* Output parameters:
* *the_info - region information block filled in
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_region_get_free_information(
rtems_id id,
Heap_Information_block *the_info
)
{
Objects_Locations location;
rtems_status_code return_status;
register Region_Control *the_region;
if ( !the_info )
return RTEMS_INVALID_ADDRESS;
_RTEMS_Lock_allocator();
the_region = _Region_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
the_info->Used.number = 0;
the_info->Used.total = 0;
the_info->Used.largest = 0;
_Heap_Get_free_information( &the_region->Memory, &the_info->Free );
return_status = RTEMS_SUCCESSFUL;
break;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE: /* this error cannot be returned */
break;
#endif
case OBJECTS_ERROR:
default:
return_status = RTEMS_INVALID_ID;
break;
}
_RTEMS_Unlock_allocator();
return return_status;
}
|