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/*
* Rate Monotonic Manager -- Get Status
*
* COPYRIGHT (c) 1989-2009.
* 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.
*/
#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>
#ifndef __RTEMS_USE_TICKS_FOR_STATISTICS__
#include <rtems/score/timespec.h>
#endif
/*
* rtems_rate_monotonic_get_status
*
* This directive allows a thread to obtain status information on a
* period.
*
* Input parameters:
* id - rate monotonic id
* status - pointer to status control block
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*
*/
rtems_status_code rtems_rate_monotonic_get_status(
rtems_id id,
rtems_rate_monotonic_period_status *status
)
{
Thread_CPU_usage_t executed;
Objects_Locations location;
Rate_monotonic_Period_time_t since_last_period;
Rate_monotonic_Control *the_period;
bool valid_status;
if ( !status )
return RTEMS_INVALID_ADDRESS;
the_period = _Rate_monotonic_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
status->owner = the_period->owner->Object.id;
status->state = the_period->state;
/*
* If the period is inactive, there is no information.
*/
if ( status->state == RATE_MONOTONIC_INACTIVE ) {
#ifndef __RTEMS_USE_TICKS_FOR_STATISTICS__
_Timespec_Set_to_zero( &status->since_last_period );
_Timespec_Set_to_zero( &status->executed_since_last_period );
#else
status->since_last_period = 0;
status->executed_since_last_period = 0;
#endif
} else {
/*
* Grab the current status.
*/
valid_status =
_Rate_monotonic_Get_status(
the_period, &since_last_period, &executed
);
if (!valid_status) {
_Thread_Enable_dispatch();
return RTEMS_NOT_DEFINED;
}
#ifndef __RTEMS_USE_TICKS_FOR_STATISTICS__
_Timestamp_To_timespec(
&since_last_period, &status->since_last_period
);
_Timestamp_To_timespec(
&executed, &status->executed_since_last_period
);
#else
status->since_last_period = since_last_period;
status->executed_since_last_period = executed;
#endif
}
_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;
}
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