Deterministic Priority Scheduler

This group contains the Deterministic Priority Scheduler implementation. More...

Files
file	cpukit/include/rtems/score/schedulerpriority.h
	This header file provides interfaces of the Deterministic Priority Scheduler which are used by the implementation and the Application Configuration.
file	cpukit/include/rtems/score/schedulerpriorityimpl.h
	This header file provides interfaces of the Deterministic Priority Scheduler which are only used by the implementation.
file	cpukit/score/src/schedulerpriority.c
	This source file contains the implementation of _Scheduler_priority_Initialize() and _Scheduler_priority_Node_initialize().
file	cpukit/score/src/schedulerpriorityblock.c
	This source file contains the implementation of _Scheduler_priority_Block().
file	cpukit/score/src/schedulerprioritychangepriority.c
	This source file contains the implementation of _Scheduler_priority_Update_priority().
file	cpukit/score/src/schedulerpriorityschedule.c
	This source file contains the implementation of _Scheduler_priority_Schedule().
file	cpukit/score/src/schedulerpriorityunblock.c
	This source file contains the implementation of _Scheduler_priority_Unblock().
file	cpukit/score/src/schedulerpriorityyield.c
	This source file contains the implementation of _Scheduler_priority_Yield().

Data Structures
struct	Scheduler_priority_Context
struct	Scheduler_priority_Ready_queue
	Data for ready queue operations. More...
struct	Scheduler_priority_Node
	Scheduler node specialization for Deterministic Priority schedulers. More...

Macros
#define	SCHEDULER_PRIORITY_ENTRY_POINTS

Functions
void	_Scheduler_priority_Initialize (const Scheduler_Control *scheduler)
	Initializes the priority scheduler.
void	_Scheduler_priority_Block (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Blocks the thread.
void	_Scheduler_priority_Schedule (const Scheduler_Control *scheduler, Thread_Control *the_thread)
	Sets the heir thread to be the next ready thread.
void	_Scheduler_priority_Unblock (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Unblocks the thread.
void	_Scheduler_priority_Update_priority (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *base_node)
	Updates the priority of the node.
void	_Scheduler_priority_Node_initialize (const Scheduler_Control *scheduler, Scheduler_Node *node, Thread_Control *the_thread, Priority_Control priority)
	Initializes the node with the given priority.
void	_Scheduler_priority_Yield (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Performs the yield of a thread.

Detailed Description

This group contains the Deterministic Priority Scheduler implementation.

Macro Definition Documentation

SCHEDULER_PRIORITY_ENTRY_POINTS

#define SCHEDULER_PRIORITY_ENTRY_POINTS

Value:

{ \
  _Scheduler_priority_Initialize,         \
  _Scheduler_priority_Schedule,           \
  _Scheduler_priority_Yield,              \
  _Scheduler_priority_Block,              \
  _Scheduler_priority_Unblock,            \
  _Scheduler_priority_Update_priority,    \
  _Scheduler_default_Map_priority,        \
  _Scheduler_default_Unmap_priority,      \
  SCHEDULER_DEFAULT_SMP_OPERATIONS \
  _Scheduler_priority_Node_initialize,    \
  _Scheduler_default_Node_destroy,        \
  _Scheduler_default_Release_job,         \
  _Scheduler_default_Cancel_job,          \
  _Scheduler_default_Start_idle           \
  SCHEDULER_DEFAULT_SET_AFFINITY_OPERATION \
}

Entry points for the Deterministic Priority Based Scheduler.

Function Documentation

_Scheduler_priority_Block()

void _Scheduler_priority_Block	(	const Scheduler_Control *	scheduler,
		Thread_Control *	the_thread,
		Scheduler_Node *	node )

Blocks the thread.

Parameters

	scheduler	The scheduler instance.
[in,out]	the_thread	The thread to block.
[in,out]	node	The thread's scheduler node.

_Scheduler_priority_Initialize()

void _Scheduler_priority_Initialize

(

const Scheduler_Control *

scheduler

)

Initializes the priority scheduler.

This routine initializes the priority scheduler.

Parameters

scheduler

The scheduler to initialize.

_Scheduler_priority_Node_initialize()

void _Scheduler_priority_Node_initialize	(	const Scheduler_Control *	scheduler,
		Scheduler_Node *	node,
		Thread_Control *	the_thread,
		Priority_Control	priority )

Initializes the node with the given priority.

Parameters

	scheduler	The scheduler instance.
[out]	node	The node to initialize.
	the_thread	The thread of the scheduler node.
	priority	The priority for the initialization.

_Scheduler_priority_Schedule()

void _Scheduler_priority_Schedule	(	const Scheduler_Control *	scheduler,
		Thread_Control *	the_thread )

Sets the heir thread to be the next ready thread.

This kernel routine sets the heir thread to be the next ready thread by invoking the_scheduler->ready_queue->operations->first().

Parameters

scheduler	The scheduler instance.
the_thread	The thread for the operation.

_Scheduler_priority_Unblock()

void _Scheduler_priority_Unblock	(	const Scheduler_Control *	scheduler,
		Thread_Control *	the_thread,
		Scheduler_Node *	node )

Unblocks the thread.

Parameters

	scheduler	The scheduler instance.
[in,out]	the_thread	The thread to unblock.
[in,out]	node	The thread's scheduler node.

_Scheduler_priority_Update_priority()

void _Scheduler_priority_Update_priority	(	const Scheduler_Control *	scheduler,
		Thread_Control *	the_thread,
		Scheduler_Node *	base_node )

Updates the priority of the node.

Parameters

scheduler	The scheduler instance.
the_thread	The thread for the operation.
base_node	The thread's scheduler node.

_Scheduler_priority_Yield()

void _Scheduler_priority_Yield	(	const Scheduler_Control *	scheduler,
		Thread_Control *	the_thread,
		Scheduler_Node *	node )

Performs the yield of a thread.

Parameters

	scheduler	The scheduler instance.
[in,out]	the_thread	The thread that performed the yield operation.
	node	The scheduler node of the_thread.