#include <Pit.h>

Inheritance diagram for Pit:

Collaboration diagram for Pit:

Public Member Functions
virtual bool	registerHandler (SchedulerTimerHandler *handler)

uint64_t	nominalQuantumNs () const override

virtual bool	removeHandler (SchedulerTimerHandler *handler)

bool	initialise () INITIALISATION_ONLY

void	uninitialise ()

Public Member Functions inherited from SchedulerTimer
virtual bool	supportsOneShot () const

virtual bool	armDeadline (uint64_t)

virtual void	disarm ()

Static Public Member Functions
static Pit &	instance ()

Protected Member Functions
	Pit () INITIALISATION_ONLY

virtual	~Pit ()

Protected Member Functions inherited from SchedulerTimer
	SchedulerTimer ()

virtual	~SchedulerTimer ()

Private Member Functions
	Pit (const Pit &)

Pit &	operator= (const Pit &)

virtual void	schedulerIrq (irq_id_t number, InterruptState &state)

Private Attributes
IoPort	m_IoPort

irq_id_t	m_IrqId

SchedulerTimerHandlerSlot	m_Handler

Static Private Attributes
static Pit	m_Instance

Additional Inherited Members
Static Protected Member Functions inherited from SchedulerTimer
static bool	canRemoveHandlerInCurrentContext ()

Detailed Description

The programmable interval timer implements the SchedulerTimer interface

Definition at line 38 of file Pit.h.

Constructor & Destructor Documentation

◆ Pit() [1/2]

Pit::Pit ( )

protected

The default constructor

Definition at line 100 of file Pit.cc.

◆ ~Pit()

virtual Pit::~Pit ( )

inlineprotectedvirtual

The destructor

Definition at line 62 of file Pit.h.

◆ Pit() [2/2]

Pit::Pit ( const Pit & )

private

The copy-constructor

Note: NOT implemented

Member Function Documentation

◆ initialise()

bool Pit::initialise ( )

Initialises the class

Returns: true, if successful, false otherwise

Definition at line 51 of file Pit.cc.

References IoPort::allocate(), m_IoPort, m_IrqId, IrqManager::registerSchedulerIrqHandler(), and IoPort::write8().

Referenced by Pc::initialise().

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◆ instance()

static Pit & Pit::instance ( )

inlinestatic

Get the Pit class instance

Definition at line 41 of file Pit.h.

References m_Instance.

Referenced by Pc::deinitialise(), Pc::getSchedulerTimer(), and Pc::initialise().

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◆ nominalQuantumNs()

uint64_t Pit::nominalQuantumNs ( ) const

overridevirtual

Implements SchedulerTimer.

Definition at line 39 of file Pit.cc.

◆ operator=()

Pit & Pit::operator= ( const Pit & )

private

The assignment operator

Note: NOT implemented

◆ registerHandler()

bool Pit::registerHandler ( SchedulerTimerHandler * handler )

virtual

Publish the sole hard scheduler-tick owner for the calling processor. Registration, dispatch, and removal are processor-local operations.

Implements SchedulerTimer.

Definition at line 43 of file Pit.cc.

References m_Handler, and SchedulerTimerHandlerSlot::publish().

◆ removeHandler()

bool Pit::removeHandler ( SchedulerTimerHandler * handler )

virtual

Remove the calling processor's exact current owner.

A successful return is a callback-lifetime barrier: the processor's timer hard frame cannot overlap ordinary removal, and later frames no longer admit the callback. Cross-processor removal is rejected and returns false; callers must arrange teardown on the registered CPU in IRQ-enabled ordinary thread context. The callback's scoped dispatch admission rejects self-removal; hard and synthetic interrupt contexts are rejected before unpublication.

Implements SchedulerTimer.

Definition at line 47 of file Pit.cc.

References SchedulerTimer::canRemoveHandlerInCurrentContext(), m_Handler, and SchedulerTimerHandlerSlot::unpublish().