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/* region.inl
*
* This file contains the macro implementation of the inlined
* routines from the Region Manager.
*
* COPYRIGHT (c) 1989-1997.
* 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.
*
* $Id$
*/
#ifndef __REGION_inl
#define __REGION_inl
/*PAGE
*
* _Region_Allocate
*
* DESCRIPTION:
*
* This function allocates a region control block from
* the inactive chain of free region control blocks.
*/
RTEMS_INLINE_ROUTINE Region_Control *_Region_Allocate( void )
{
return (Region_Control *) _Objects_Allocate( &_Region_Information );
}
/*PAGE
*
* _Region_Free
*
* DESCRIPTION:
*
* This routine frees a region control block to the
* inactive chain of free region control blocks.
*/
RTEMS_INLINE_ROUTINE void _Region_Free (
Region_Control *the_region
)
{
_Objects_Free( &_Region_Information, &the_region->Object );
}
/*PAGE
*
* _Region_Get
*
* DESCRIPTION:
*
* This function maps region IDs to region control blocks.
* If ID corresponds to a local region, then it returns
* the_region control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. Otherwise, location is set
* to OBJECTS_ERROR and the_region is undefined.
*/
RTEMS_INLINE_ROUTINE Region_Control *_Region_Get (
Objects_Id id,
Objects_Locations *location
)
{
return (Region_Control *)
_Objects_Get( &_Region_Information, id, location );
}
/*PAGE
*
* _Region_Allocate_segment
*
* DESCRIPTION:
*
* This function attempts to allocate a segment from the_region.
* If successful, it returns the address of the allocated segment.
* Otherwise, it returns NULL.
*/
RTEMS_INLINE_ROUTINE void *_Region_Allocate_segment (
Region_Control *the_region,
unsigned32 size
)
{
return _Heap_Allocate( &the_region->Memory, size );
}
/*PAGE
*
* _Region_Free_segment
*
* DESCRIPTION:
*
* This function frees the_segment to the_region.
*/
RTEMS_INLINE_ROUTINE boolean _Region_Free_segment (
Region_Control *the_region,
void *the_segment
)
{
return _Heap_Free( &the_region->Memory, the_segment );
}
/*PAGE
*
* _Region_Is_null
*
* DESCRIPTION:
*
* This function returns TRUE if the_region is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE boolean _Region_Is_null (
Region_Control *the_region
)
{
return ( the_region == NULL );
}
#endif
/* end of include file */
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