/**
* @file
*
* @ingroup ScoreSchedulerPrioritySMP
*
* @brief Deterministic Priority SMP Scheduler API
*/
/*
* Copyright (c) 2013-2014 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
#ifndef _RTEMS_SCORE_SCHEDULERPRIORITYSMP_H
#define _RTEMS_SCORE_SCHEDULERPRIORITYSMP_H
#include <rtems/score/scheduler.h>
#include <rtems/score/schedulerpriority.h>
#include <rtems/score/schedulersmp.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup ScoreSchedulerPrioritySMP Deterministic Priority SMP Scheduler
*
* @ingroup ScoreSchedulerSMP
*
* This is an implementation of the global fixed priority scheduler (G-FP). It
* uses one ready chain per priority to ensure constant time insert operations.
* The scheduled chain uses linear insert operations and has at most processor
* count entries. Since the processor and priority count are constants all
* scheduler operations complete in a bounded execution time.
*
* The thread preempt mode will be ignored.
*
* @{
*/
/**
* @brief Scheduler context specialization for Deterministic Priority SMP
* schedulers.
*/
typedef struct {
Scheduler_SMP_Context Base;
Priority_bit_map_Control Bit_map;
Chain_Control Ready[ RTEMS_ZERO_LENGTH_ARRAY ];
} Scheduler_priority_SMP_Context;
/**
* @brief Scheduler node specialization for Deterministic Priority SMP
* schedulers.
*/
typedef struct {
/**
* @brief SMP scheduler node.
*/
Scheduler_SMP_Node Base;
/**
* @brief The associated ready queue of this node.
*/
Scheduler_priority_Ready_queue Ready_queue;
} Scheduler_priority_SMP_Node;
/**
* @brief Entry points for the Priority SMP Scheduler.
*/
#define SCHEDULER_PRIORITY_SMP_ENTRY_POINTS \
{ \
_Scheduler_priority_SMP_Initialize, \
_Scheduler_default_Schedule, \
_Scheduler_priority_SMP_Yield, \
_Scheduler_priority_SMP_Block, \
_Scheduler_priority_SMP_Unblock, \
_Scheduler_priority_SMP_Change_priority, \
_Scheduler_default_Map_priority, \
_Scheduler_default_Unmap_priority, \
_Scheduler_priority_SMP_Ask_for_help, \
_Scheduler_priority_SMP_Node_initialize, \
_Scheduler_default_Node_destroy, \
_Scheduler_priority_SMP_Update_priority, \
_Scheduler_default_Release_job, \
_Scheduler_default_Tick, \
_Scheduler_SMP_Start_idle \
SCHEDULER_OPERATION_DEFAULT_GET_SET_AFFINITY \
}
void _Scheduler_priority_SMP_Initialize( const Scheduler_Control *scheduler );
void _Scheduler_priority_SMP_Node_initialize(
const Scheduler_Control *scheduler,
Thread_Control *thread
);
void _Scheduler_priority_SMP_Block(
const Scheduler_Control *scheduler,
Thread_Control *thread
);
Thread_Control *_Scheduler_priority_SMP_Unblock(
const Scheduler_Control *scheduler,
Thread_Control *thread
);
Thread_Control *_Scheduler_priority_SMP_Change_priority(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Priority_Control new_priority,
bool prepend_it
);
Thread_Control *_Scheduler_priority_SMP_Ask_for_help(
const Scheduler_Control *scheduler,
Thread_Control *needs_help,
Thread_Control *offers_help
);
void _Scheduler_priority_SMP_Update_priority(
const Scheduler_Control *scheduler,
Thread_Control *thread,
Priority_Control new_priority
);
Thread_Control *_Scheduler_priority_SMP_Yield(
const Scheduler_Control *scheduler,
Thread_Control *thread
);
/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _RTEMS_SCORE_SCHEDULERPRIORITYSMP_H */
