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/**
* @file
*
* @brief RTEMS Get Partition Buffer
* @ingroup ClassicPart
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/partimpl.h>
rtems_status_code rtems_partition_get_buffer(
rtems_id id,
void **buffer
)
{
Partition_Control *the_partition;
Objects_Locations location;
ISR_lock_Context lock_context;
void *the_buffer;
if ( !buffer )
return RTEMS_INVALID_ADDRESS;
the_partition = _Partition_Get( id, &location, &lock_context );
switch ( location ) {
case OBJECTS_LOCAL:
_Partition_Acquire_critical( the_partition, &lock_context );
the_buffer = _Partition_Allocate_buffer( the_partition );
if ( the_buffer != NULL ) {
the_partition->number_of_used_blocks += 1;
_Partition_Release( the_partition, &lock_context );
*buffer = the_buffer;
return RTEMS_SUCCESSFUL;
}
_Partition_Release( the_partition, &lock_context );
return RTEMS_UNSATISFIED;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
_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:
break;
}
return RTEMS_INVALID_ID;
}
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