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/**
* @file
*
* @brief Scheduler EDF Initialize and Support
* @ingroup ScoreScheduler
*/
/*
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/scheduleredfimpl.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_EDF_Priority_compare(value1, value2);
}
void _Scheduler_EDF_Initialize( const Scheduler_Control *scheduler )
{
Scheduler_EDF_Context *context =
_Scheduler_EDF_Get_context( scheduler );
_RBTree_Initialize_empty(
&context->Ready,
_Scheduler_EDF_RBTree_compare_function,
0
);
}
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