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/* inline/dpmem.inl
*
* This include file contains the inline routine used in conjunction
* with the Dual Ported Memory Manager
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#ifndef __INLINE_DPMEM_inl
#define __INLINE_DPMEM_inl
/*PAGE
*
* _Dual_ported_memory_Allocate
*
* DESCRIPTION:
*
* This routine allocates a port control block from the inactive chain
* of free port control blocks.
*/
RTEMS_INLINE_ROUTINE Dual_ported_memory_Control
*_Dual_ported_memory_Allocate ( void )
{
return (Dual_ported_memory_Control *)
_Objects_Allocate( &_Dual_ported_memory_Information );
}
/*PAGE
*
* _Dual_ported_memory_Free
*
* DESCRIPTION:
*
* This routine frees a port control block to the inactive chain
* of free port control blocks.
*/
RTEMS_INLINE_ROUTINE void _Dual_ported_memory_Free (
Dual_ported_memory_Control *the_port
)
{
_Objects_Free( &_Dual_ported_memory_Information, &the_port->Object );
}
/*PAGE
*
* _Dual_ported_memory_Get
*
* DESCRIPTION:
*
* This function maps port IDs to port control blocks. If ID
* corresponds to a local port, then it returns the_port control
* pointer which maps to ID and location is set to OBJECTS_LOCAL.
* Global ports are not supported, thus if ID does not map to a
* local port, location is set to OBJECTS_ERROR and the_port is
* undefined.
*/
RTEMS_INLINE_ROUTINE Dual_ported_memory_Control *_Dual_ported_memory_Get (
Objects_Id id,
Objects_Locations *location
)
{
return (Dual_ported_memory_Control *)
_Objects_Get( &_Dual_ported_memory_Information, id, location );
}
/*PAGE
*
* _Dual_ported_memory_Is_null
*
* DESCRIPTION:
*
* This function returns TRUE if the_port is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE boolean _Dual_ported_memory_Is_null(
Dual_ported_memory_Control *the_port
)
{
return ( the_port == NULL );
}
#endif
/* end of include file */
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