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/*
* Copyright (C) 2011 Petr Benes.
* Copyright (C) 2011 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/config.h>
#include <rtems/score/scheduler.h>
#include <rtems/score/scheduleredf.h>
static int _Scheduler_EDF_RBTree_compare_function
(
const RBTree_Node* n1,
const RBTree_Node* n2
)
{
Priority_Control value1 = _RBTree_Container_of
(n1,Scheduler_EDF_Per_thread,Node)->thread->current_priority;
Priority_Control value2 = _RBTree_Container_of
(n2,Scheduler_EDF_Per_thread,Node)->thread->current_priority;
/*
* This function compares only numbers for the red-black tree,
* but priorities have an opposite sense.
*/
return (-1)*_Scheduler_Priority_compare(value1, value2);
}
void _Scheduler_EDF_Initialize(void)
{
_RBTree_Initialize_empty(
&_Scheduler_EDF_Ready_queue,
&_Scheduler_EDF_RBTree_compare_function,
0
);
}
/* Instantiate any global variables needed by the EDF scheduler */
RBTree_Control _Scheduler_EDF_Ready_queue;
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