Sched_context Class Reference

#include <sched_context.h>

List of all members.

Public Types
enum	Preemption_type { None, Timeslice_overrun, Deadline_miss }
	Definition of different preemption types. More...
Public Member Functions
	Sched_context (Context *const owner, unsigned short const id, unsigned short prio, Unsigned64 quantum)
	Constructor.
void *	operator new (size_t)
	Allocator.
void	operator delete (void *const ptr)
	Deallocator.
Sched_context *	next () const
	Return the next Sched_context in list.
Sched_context *	prev () const
	Return the previous Sched_context in list.
void	enqueue_before (Sched_context *const sibling)
	Enqueue a Sched_context in list before sibling.
void	dequeue ()
	Dequeue a Sched_context from list.
Context *	owner () const
	Return owner of Sched_context.
unsigned short	id () const
	Return ID of Sched_context.
unsigned short	prio () const
	Return priority of Sched_context.
void	set_prio (unsigned short const prio)
	Set priority of Sched_context.
Unsigned64	quantum () const
	Return full time quantum of Sched_context.
void	set_quantum (Unsigned64 const quantum)
	Set full time quantum of Sched_context.
Unsigned64	left () const
	Return remaining time quantum of Sched_context.
void	set_left (Unsigned64 const left)
	Set remaining time quantum of Sched_context.
Sched_context::Preemption_type	preemption_type () const
	Return type of last preemption event on this Sched_context.
Cpu_time	preemption_time () const
	Return time of last preemption event on this Sched_context.
unsigned	preemption_count () const
	Return number of unsent preemption events on this Sched_context.
void	set_preemption_event (Preemption_type const type, Cpu_time const clock)
	Set time of last preemption event on this Sched_context.
void	clear_preemption_event ()
Sched_context *	find_next_preemption ()
	Return next Sched_context with a pending preemption event.
Private Attributes
Context *const	_owner
unsigned short const	_id
unsigned short	_prio
Unsigned64	_quantum
Unsigned64	_left
Preemption_type	_preemption_type
Cpu_time	_preemption_time
unsigned	_preemption_count
Sched_context *	_prev
Sched_context *	_next
Static Private Attributes
static slab_cache_anon *	_slabs
	Slab allocator for Sched_context slabs.
Friends
class	Jdb_list_timeouts
void	allocator_init ()

---

Member Enumeration Documentation

enum Sched_context::Preemption_type

Definition of different preemption types. Enumeration values: None  Timeslice_overrun  Deadline_miss

---

Constructor & Destructor Documentation

Sched_context::Sched_context (  Context *const   owner, unsigned short const   id, unsigned short  prio, Unsigned64  quantum )

Constructor.

---

Member Function Documentation

void Sched_context::clear_preemption_event (   )  [inline]

void Sched_context::dequeue (   )  [inline]

Dequeue a Sched_context from list.

void Sched_context::enqueue_before (  Sched_context *const   sibling  )  [inline]

Enqueue a Sched_context in list before sibling.

Sched_context * Sched_context::find_next_preemption (   )  [inline]

Return next Sched_context with a pending preemption event.

unsigned short Sched_context::id (   )  const [inline]

Return ID of Sched_context.

Unsigned64 Sched_context::left (   )  const [inline]

Return remaining time quantum of Sched_context.

Sched_context * Sched_context::next (   )  const [inline]

Return the next Sched_context in list.

void Sched_context::operator delete (  void *const   ptr  )  [inline]

Deallocator.

void * Sched_context::operator new (  size_t   )  [inline]

Allocator.

Context * Sched_context::owner (   )  const [inline]

Return owner of Sched_context.

unsigned Sched_context::preemption_count (   )  const [inline]

Return number of unsent preemption events on this Sched_context.

Cpu_time Sched_context::preemption_time (   )  const [inline]

Return time of last preemption event on this Sched_context.

Sched_context::Preemption_type Sched_context::preemption_type (   )  const [inline]

Return type of last preemption event on this Sched_context.

Sched_context * Sched_context::prev (   )  const [inline]

Return the previous Sched_context in list.

unsigned short Sched_context::prio (   )  const [inline]

Return priority of Sched_context.

Unsigned64 Sched_context::quantum (   )  const [inline]

Return full time quantum of Sched_context.

void Sched_context::set_left (  Unsigned64 const   left  )  [inline]

Set remaining time quantum of Sched_context.

void Sched_context::set_preemption_event (  Preemption_type const   type, Cpu_time const   clock )  [inline]

Set time of last preemption event on this Sched_context.

void Sched_context::set_prio (  unsigned short const   prio  )  [inline]

Set priority of Sched_context.

void Sched_context::set_quantum (  Unsigned64 const   quantum  )  [inline]

Set full time quantum of Sched_context.

---

Friends And Related Function Documentation

void allocator_init (   )  [friend]

friend class Jdb_list_timeouts [friend]

---

Member Data Documentation

unsigned short const Sched_context::_id [private]

Unsigned64 Sched_context::_left [private]

Sched_context* Sched_context::_next [private]

Context* const Sched_context::_owner [private]

unsigned Sched_context::_preemption_count [private]

Cpu_time Sched_context::_preemption_time [private]

Preemption_type Sched_context::_preemption_type [private]

Sched_context* Sched_context::_prev [private]

unsigned short Sched_context::_prio [private]

Unsigned64 Sched_context::_quantum [private]

slab_cache_anon * Sched_context::_slabs [static, private]

Slab allocator for Sched_context slabs.

---

The documentation for this class was generated from the following files:

• sched_context.h
• sched_context.cc

---