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/*
* Partition Manager
*
*
* COPYRIGHT (c) 1989-1999.
* 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.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/score/address.h>
#include <rtems/score/object.h>
#include <rtems/rtems/part.h>
#include <rtems/score/thread.h>
#include <rtems/score/sysstate.h>
/*PAGE
*
* rtems_partition_get_buffer
*
* This directive will obtain a buffer from a buffer partition.
*
* Input parameters:
* id - partition id
* buffer - pointer to buffer address
*
* Output parameters:
* buffer - pointer to buffer address filled in
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_partition_get_buffer(
Objects_Id id,
void **buffer
)
{
register Partition_Control *the_partition;
Objects_Locations location;
void *the_buffer;
the_partition = _Partition_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
_Thread_Executing->Wait.return_argument = buffer;
return(
_Partition_MP_Send_request_packet(
PARTITION_MP_GET_BUFFER_REQUEST,
id,
0 /* Not used */
)
);
#endif
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
the_buffer = _Partition_Allocate_buffer( the_partition );
if ( the_buffer ) {
the_partition->number_of_used_blocks += 1;
_Thread_Enable_dispatch();
*buffer = the_buffer;
return RTEMS_SUCCESSFUL;
}
_Thread_Enable_dispatch();
return RTEMS_UNSATISFIED;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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