path: root/cpukit/rtems/src/ratemongetstatistics.c

/*
 *  Rate Monotonic Manager -- Get Statistics
 *
 *  COPYRIGHT (c) 1989-2007.
 *  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.com/license/LICENSE.
 *
 *  $Id$
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#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_get_statistics
 *
 *  This directive allows a thread to obtain statistics information on a
 *  period.
 *
 *  Input parameters:
 *    id         - rate monotonic id
 *    statistics - pointer to statistics control block
 *
 *  Output parameters:
 *    RTEMS_SUCCESSFUL - if successful
 *    error code       - if unsuccessful
 *
 */

rtems_status_code rtems_rate_monotonic_get_statistics(
  Objects_Id                               id,
  rtems_rate_monotonic_period_statistics  *statistics
)
{
  Objects_Locations              location;
  Rate_monotonic_Control        *the_period;

  if ( !statistics )
    return RTEMS_INVALID_ADDRESS;

  the_period = _Rate_monotonic_Get( id, &location );
  switch ( location ) {

    case OBJECTS_LOCAL:
      *statistics = the_period->Statistics;
      _Thread_Enable_dispatch();
      return RTEMS_SUCCESSFUL;

#if defined(RTEMS_MULTIPROCESSING)
    case OBJECTS_REMOTE:            /* should never return this */
#endif
    case OBJECTS_ERROR:
      break;
  }

  return RTEMS_INVALID_ID;
}