/*
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/*
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* Region Manager
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* Region Manager
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*
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*
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*
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*
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* COPYRIGHT (c) 1989-1999.
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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* On-Line Applications Research Corporation (OAR).
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*
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*
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* The license and distribution terms for this file may be
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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* http://www.OARcorp.com/rtems/license.html.
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*
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*
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* $Id: regiongetsegmentsize.c,v 1.2 2001-09-27 11:59:19 chris Exp $
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* $Id: regiongetsegmentsize.c,v 1.2 2001-09-27 11:59:19 chris Exp $
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*/
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*/
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#include <rtems/system.h>
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#include <rtems/system.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/support.h>
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#include <rtems/rtems/support.h>
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#include <rtems/score/object.h>
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#include <rtems/score/object.h>
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#include <rtems/rtems/options.h>
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#include <rtems/rtems/options.h>
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#include <rtems/rtems/region.h>
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#include <rtems/rtems/region.h>
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#include <rtems/score/states.h>
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#include <rtems/score/states.h>
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#include <rtems/score/thread.h>
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#include <rtems/score/thread.h>
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/*PAGE
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/*PAGE
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*
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*
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* rtems_region_get_segment_size
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* rtems_region_get_segment_size
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*
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*
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* This directive will return the size of the segment indicated
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* This directive will return the size of the segment indicated
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*
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*
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* Input parameters:
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* Input parameters:
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* id - region id
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* id - region id
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* segment - segment address
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* segment - segment address
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* size - pointer to segment size in bytes
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* size - pointer to segment size in bytes
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*
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*
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* Output parameters:
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* Output parameters:
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* size - segment size in bytes filled in
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* size - segment size in bytes filled in
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* RTEMS_SUCCESSFUL - if successful
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* RTEMS_SUCCESSFUL - if successful
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* error code - if unsuccessful
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* error code - if unsuccessful
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*/
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*/
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rtems_status_code rtems_region_get_segment_size(
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rtems_status_code rtems_region_get_segment_size(
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Objects_Id id,
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Objects_Id id,
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void *segment,
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void *segment,
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unsigned32 *size
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unsigned32 *size
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)
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)
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{
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{
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register Region_Control *the_region;
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register Region_Control *the_region;
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Objects_Locations location;
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Objects_Locations location;
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Thread_Control *executing;
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Thread_Control *executing;
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executing = _Thread_Executing;
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executing = _Thread_Executing;
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the_region = _Region_Get( id, &location );
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the_region = _Region_Get( id, &location );
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switch ( location ) {
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switch ( location ) {
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case OBJECTS_REMOTE: /* this error cannot be returned */
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case OBJECTS_REMOTE: /* this error cannot be returned */
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return RTEMS_INTERNAL_ERROR;
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return RTEMS_INTERNAL_ERROR;
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case OBJECTS_ERROR:
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case OBJECTS_ERROR:
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return RTEMS_INVALID_ID;
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return RTEMS_INVALID_ID;
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case OBJECTS_LOCAL:
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case OBJECTS_LOCAL:
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if ( _Heap_Size_of_user_area( &the_region->Memory, segment, size ) ) {
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if ( _Heap_Size_of_user_area( &the_region->Memory, segment, size ) ) {
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_Thread_Enable_dispatch();
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_Thread_Enable_dispatch();
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return RTEMS_SUCCESSFUL;
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return RTEMS_SUCCESSFUL;
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}
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}
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_Thread_Enable_dispatch();
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_Thread_Enable_dispatch();
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return RTEMS_INVALID_ADDRESS;
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return RTEMS_INVALID_ADDRESS;
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}
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}
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return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
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return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
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}
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}
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