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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [partgetbuffer.c] - Rev 30
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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: partgetbuffer.c,v 1.2 2001-09-27 11:59:19 chris Exp $ */ #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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