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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [src/] [objectget.c] - Blame information for rev 213

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1 30 unneback
/*
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 *  Object Handler
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 *
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: objectget.c,v 1.2 2001-09-27 11:59:34 chris Exp $
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 */
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#include <rtems/system.h>
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#include <rtems/score/address.h>
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#include <rtems/score/chain.h>
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#include <rtems/score/object.h>
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#if defined(RTEMS_MULTIPROCESSING)
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#include <rtems/score/objectmp.h>
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#endif
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#include <rtems/score/thread.h>
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#include <rtems/score/wkspace.h>
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#include <rtems/score/sysstate.h>
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#include <rtems/score/isr.h>
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/*PAGE
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 *
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 * _Objects_Get
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 *
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 * This routine sets the object pointer for the given
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 * object id based on the given object information structure.
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 *
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 * Input parameters:
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 *   information - pointer to entry in table for this class
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 *   id          - object id to search for
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 *   location    - address of where to store the location
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 *
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 * Output parameters:
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 *   returns  - address of object if local
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 *   location - one of the following:
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 *                  OBJECTS_ERROR  - invalid object ID
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 *                  OBJECTS_REMOTE - remote object
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 *                  OBJECTS_LOCAL  - local object
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 */
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Objects_Control *_Objects_Get(
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  Objects_Information *information,
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  Objects_Id           id,
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  Objects_Locations   *location
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)
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{
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  Objects_Control *the_object;
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  unsigned32       index;
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  index = _Objects_Get_index( id );
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  if ( information->maximum >= index ) {
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    _Thread_Disable_dispatch();
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    if ( (the_object = _Objects_Get_local_object( information, index )) != NULL ) {
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      *location = OBJECTS_LOCAL;
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      return( the_object );
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    }
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    _Thread_Enable_dispatch();
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    *location = OBJECTS_ERROR;
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    return( NULL );
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  }
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  *location = OBJECTS_ERROR;
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#if defined(RTEMS_MULTIPROCESSING)
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  _Objects_MP_Is_remote(
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    information,
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    _Objects_Build_id( information->the_class, _Objects_Local_node, index ),
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    location,
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    &the_object
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  );
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  return the_object;
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#else
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  return NULL;
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#endif
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}

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