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/**
* @file
*
* @brief Scheduler EDF Release Job
* @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>
Priority_Control _Scheduler_EDF_Map_priority(
const Scheduler_Control *scheduler,
Priority_Control priority
)
{
return SCHEDULER_EDF_PRIO_MSB | SCHEDULER_PRIORITY_MAP( priority );
}
Priority_Control _Scheduler_EDF_Unmap_priority(
const Scheduler_Control *scheduler,
Priority_Control priority
)
{
return SCHEDULER_PRIORITY_UNMAP( priority & ~SCHEDULER_EDF_PRIO_MSB );
}
void _Scheduler_EDF_Release_job(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Priority_Node *priority_node,
uint64_t deadline,
Thread_queue_Context *queue_context
)
{
(void) scheduler;
_Thread_Wait_acquire_critical( the_thread, queue_context );
/*
* There is no integer overflow problem here due to the
* SCHEDULER_PRIORITY_MAP(). The deadline is in clock ticks. With the
* minimum clock tick interval of 1us, the uptime is limited to about 146235
* years.
*/
_Priority_Node_set_priority(
priority_node,
SCHEDULER_PRIORITY_MAP( deadline )
);
if ( _Priority_Node_is_active( priority_node ) ) {
_Thread_Priority_changed(
the_thread,
priority_node,
false,
queue_context
);
} else {
_Thread_Priority_add( the_thread, priority_node, queue_context );
}
_Thread_Wait_release_critical( the_thread, queue_context );
}
void _Scheduler_EDF_Cancel_job(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Priority_Node *priority_node,
Thread_queue_Context *queue_context
)
{
(void) scheduler;
_Thread_Wait_acquire_critical( the_thread, queue_context );
_Thread_Priority_remove( the_thread, priority_node, queue_context );
_Priority_Node_set_inactive( priority_node );
_Thread_Wait_release_critical( the_thread, queue_context );
}
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