blob: 1f597ec944bc60e04aacc6bc8049e455f4038caf (
plain) (
tree)
|
|
/**
* @file
*
* @brief Create a Period
* @ingroup ClassicRateMon Rate Monotonic Scheduler
*/
/*
* 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.org/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/rtems/ratemonimpl.h>
#include <rtems/score/thread.h>
#include <rtems/score/watchdogimpl.h>
/*
* 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,
rtems_id *id
)
{
Rate_monotonic_Control *the_period;
if ( !rtems_is_name_valid( name ) )
return RTEMS_INVALID_NAME;
if ( !id )
return RTEMS_INVALID_ADDRESS;
the_period = _Rate_monotonic_Allocate();
if ( !the_period ) {
_Objects_Allocator_unlock();
return RTEMS_TOO_MANY;
}
the_period->owner = _Thread_Get_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;
_Objects_Allocator_unlock();
return RTEMS_SUCCESSFUL;
}
|