Subversion Repositories openrisc_me

/*

 *  Rate Monotonic 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: ratemoncreate.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/isr.h>

#include <rtems/score/object.h>

#include <rtems/rtems/ratemon.h>

#include <rtems/score/thread.h>

/*PAGE

 *

 *  rtems_rate_monotonic_create

 *

 *  This directive creates a rate monotonic timer and performs

 *  some initialization.

 *

 *  Input parameters:

 *    name - name of period

 *    id   - pointer to rate monotonic id

 *

 *  Output parameters:

 *    id                - rate monotonic id

 *    RTEMS_SUCCESSFUL - if successful

 *    error code        - if unsuccessful

 */

rtems_status_code rtems_rate_monotonic_create(

  rtems_name    name,

  Objects_Id   *id

)

{

  Rate_monotonic_Control *the_period;

  if ( !rtems_is_name_valid( name ) )

    return RTEMS_INVALID_NAME;

  _Thread_Disable_dispatch();            /* to prevent deletion */

  the_period = _Rate_monotonic_Allocate();

  if ( !the_period ) {

    _Thread_Enable_dispatch();

    return RTEMS_TOO_MANY;

  }

  the_period->owner = _Thread_Executing;

  the_period->state = RATE_MONOTONIC_INACTIVE;

  _Objects_Open( &_Rate_monotonic_Information, &the_period->Object, &name );

  *id = the_period->Object.id;

  _Thread_Enable_dispatch();

  return RTEMS_SUCCESSFUL;

}