Subversion Repositories openrisc_2011-10-31

/*

 *  Semaphore Manager

 *

 *  DESCRIPTION:

 *

 *  This package is the implementation of the Semaphore Manager.

 *  This manager utilizes standard Dijkstra counting semaphores to provide

 *  synchronization and mutual exclusion capabilities.

 *

 *  Directives provided are:

 *

 *     + create a semaphore

 *     + get an ID of a semaphore

 *     + delete a semaphore

 *     + acquire a semaphore

 *     + release a semaphore

 *

 *  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: semident.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/rtems/attr.h>

#include <rtems/score/isr.h>

#include <rtems/score/object.h>

#include <rtems/rtems/options.h>

#include <rtems/rtems/sem.h>

#include <rtems/score/coremutex.h>

#include <rtems/score/coresem.h>

#include <rtems/score/states.h>

#include <rtems/score/thread.h>

#include <rtems/score/threadq.h>

#if defined(RTEMS_MULTIPROCESSING)

#include <rtems/score/mpci.h>

#endif

#include <rtems/score/sysstate.h>

#include <rtems/score/interr.h>

/*PAGE

 *

 *  rtems_semaphore_ident

 *

 *  This directive returns the system ID associated with

 *  the semaphore name.

 *

 *  Input parameters:

 *    name - user defined semaphore name

 *    node - node(s) to be searched

 *    id   - pointer to semaphore id

 *

 *  Output parameters:

 *    *id      - semaphore id

 *    RTEMS_SUCCESSFUL - if successful

 *    error code - if unsuccessful

 */

rtems_status_code rtems_semaphore_ident(

  rtems_name  name,

  unsigned32  node,

  Objects_Id *id

)

{

  Objects_Name_to_id_errors  status;

  status = _Objects_Name_to_id( &_Semaphore_Information, &name, node, id );

  return _Status_Object_name_errors_to_status[ status ];

}