IntervalTimer Class Reference

Inheritance diagram for IntervalTimer:

Collaboration diagram for IntervalTimer:

Public Types
enum	Mode { Hardware = 0, Virtual, Profile }

Public Member Functions
	IntervalTimer (PosixProcess *pProcess, Mode mode=Hardware)
void	setInterval (Time::Timestamp interval, Time::Timestamp *prevInterval=nullptr)
void	setTimerValue (Time::Timestamp value, Time::Timestamp *prevValue=nullptr)
	Set the current value of the timer.
void	setIntervalAndValue (Time::Timestamp interval, Time::Timestamp value, Time::Timestamp *prevInterval=nullptr, Time::Timestamp *prevValue=nullptr)
	Set both interval and value atomically.
void	getIntervalAndValue (Time::Timestamp &interval, Time::Timestamp &value)
void	adjustValue (int64_t adjustment)
	Adjust the current value directly.
Time::Timestamp	getInterval () const
Time::Timestamp	getValue () const

Private Member Functions
virtual void	timer (uint64_t delta, InterruptState &state)
void	signal ()

Private Attributes
PosixProcess *	m_Process
Mode	m_Mode
Time::Timestamp	m_Value
Time::Timestamp	m_Interval
Spinlock	m_Lock
bool	m_Armed

Detailed Description

Definition at line 74 of file PosixProcess.h.

Member Enumeration Documentation

enum IntervalTimer::Mode

Enumerator
Hardware	Hardware-backed timer (wall time).
Virtual	CPU time in user mode only.
Profile	CPU time in user and system.

Definition at line 77 of file PosixProcess.h.

Constructor & Destructor Documentation

IntervalTimer::IntervalTimer	(	PosixProcess *	pProcess,
		Mode	mode = Hardware
	)

Setting hw=true will use hardware. hw=false requires adjust() to be called to be able to trigger timers.

Definition at line 232 of file PosixProcess.cc.

References Machine::getTimer(), and Hardware.

Member Function Documentation

void IntervalTimer::setInterval	(	Time::Timestamp	interval,
		Time::Timestamp *	prevInterval = nullptr
	)

Set the interval for the timer, which is loaded once the timer expires. Set zero to make a non-reloading timer.

Definition at line 258 of file PosixProcess.cc.

void IntervalTimer::signal ( )

private

Todo:

sanity check that this is absolutely a PosixSubsystem

Definition at line 391 of file PosixProcess.cc.

References Process::getThread(), Hardware, Profile, PosixSubsystem::sendSignal(), and Virtual.

Referenced by adjustValue(), and timer().

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void IntervalTimer::timer ( uint64_t  delta, InterruptState &  state  )

privatevirtual

Called when the handler is registered with the Timer/SchedulerTimer class and a timer event occured

Parameters

[in]	delta	time elapsed since the last event, in nanoseconds
[in,out]	state	the state of the processor when the event occurred.

Implements TimerHandler.

Definition at line 355 of file PosixProcess.cc.

References Hardware, and signal().

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

• PosixProcess.h
• PosixProcess.cc