Simple Priority Scheduler

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

Files
file	cpukit/include/rtems/score/schedulersimple.h
	This header file provides interfaces of the Simple Priority Scheduler which are used by the implementation and the Application Configuration.
file	cpukit/include/rtems/score/schedulersimpleimpl.h
	This header file provides interfaces of the Simple Priority Scheduler which are only used by the implementation.
file	cpukit/score/src/schedulersimple.c
	This source file contains the implementation of _Scheduler_simple_Initialize().
file	cpukit/score/src/schedulersimpleblock.c
	This source file contains the implementation of _Scheduler_simple_Block().
file	cpukit/score/src/schedulersimplechangepriority.c
	This source file contains the implementation of _Scheduler_simple_Update_priority().
file	cpukit/score/src/schedulersimpleschedule.c
	This source file contains the implementation of _Scheduler_simple_Schedule().
file	cpukit/score/src/schedulersimpleunblock.c
	This source file contains the implementation of _Scheduler_simple_Unblock().
file	cpukit/score/src/schedulersimpleyield.c
	This source file contains the implementation of _Scheduler_simple_Yield().

Data Structures
struct	Scheduler_simple_Context
	Simple scheduler context. More...

Macros
#define	SCHEDULER_SIMPLE_MAXIMUM_PRIORITY   255
#define	SCHEDULER_SIMPLE_ENTRY_POINTS

Functions
void	_Scheduler_simple_Initialize (const Scheduler_Control *scheduler)
	Initializes simple scheduler.
void	_Scheduler_simple_Schedule (const Scheduler_Control *scheduler, Thread_Control *the_thread)
	Schedules threads.
void	_Scheduler_simple_Yield (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Performs the yield of a thread.
void	_Scheduler_simple_Block (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Blocks the thread.
void	_Scheduler_simple_Unblock (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Unblocks the thread.
void	_Scheduler_simple_Update_priority (const Scheduler_Control *scheduler, Thread_Control *the_thread, Scheduler_Node *node)
	Updates the priority of the node.

Detailed Description

This group contains the Simple Priority Scheduler implementation.

Macro Definition Documentation

SCHEDULER_SIMPLE_ENTRY_POINTS

#define SCHEDULER_SIMPLE_ENTRY_POINTS

Value:

{ \
  _Scheduler_simple_Initialize,           \
  _Scheduler_simple_Schedule,             \
  _Scheduler_simple_Yield,                \
  _Scheduler_simple_Block,                \
  _Scheduler_simple_Unblock,              \
  _Scheduler_simple_Update_priority,      \
  _Scheduler_default_Map_priority,        \
  _Scheduler_default_Unmap_priority,      \
  SCHEDULER_DEFAULT_SMP_OPERATIONS \
  _Scheduler_default_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 Scheduler Simple

Function Documentation

_Scheduler_simple_Block()

void _Scheduler_simple_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_simple_Initialize()

void _Scheduler_simple_Initialize

(

const Scheduler_Control *

scheduler

)

Initializes simple scheduler.

This routine initializes the simple scheduler.

Parameters

scheduler

The scheduler to be initialized.

_Scheduler_simple_Schedule()

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

Schedules threads.

This routine sets the heir thread to be the next ready thread on the ready queue by getting the first node in the scheduler information.

Parameters

scheduler	The scheduler instance.
the_thread	causing the scheduling operation.

_Scheduler_simple_Unblock()

void _Scheduler_simple_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_simple_Update_priority()

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

Updates the priority of the node.

Parameters

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

_Scheduler_simple_Yield()

void _Scheduler_simple_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.