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/*
* Rate Monotonic Manager -- Create a Period
*
* 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_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;
if ( !id )
return RTEMS_INVALID_ADDRESS;
_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;
_Watchdog_Initialize( &the_period->Timer, NULL, 0, NULL );
_Rate_monotonic_Reset_statistics( the_period );
_Objects_Open(
&_Rate_monotonic_Information,
&the_period->Object,
(Objects_Name) name
);
*id = the_period->Object.id;
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
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