lm::LoadMonitor::ProcessorStats Class Reference

Collects data about processor usage. More...

Inheritance diagram for lm::LoadMonitor::ProcessorStats:


Public Member Functions
	ProcessorStats (void)
	Constructor.
virtual	~ProcessorStats (void)
	Destructor.
virtual bool	QueryData (LoadSample &target)
	Query data and store them in the sample.
virtual bool	QueryData (HardwareDescription &target)
	Query data descriptions and store them.
Private Attributes
std::vector< OneCpuStats >	cpus
	Cached stats for each cpu from previous run.
Data Structures
class	OneCpuStats
	Data read from /proc/stat for on CPU. More...

Detailed Description

Collects data about processor usage.

Constructor & Destructor Documentation

lm::LoadMonitor::ProcessorStats::ProcessorStats ( void )

Constructor.

This will parse /proc/stat file and determine number of processors. It is assumed, that this number does not change while monitor is running (well, hot-swap processors are not that common :) ).

lm::LoadMonitor::ProcessorStats::~ProcessorStats ( void ) [virtual]

Destructor.

Member Function Documentation

bool lm::LoadMonitor::ProcessorStats::QueryData ( HardwareDescription & description ) [virtual]

Query data descriptions and store them.

Reads data about the processors from the /proc/stat file.

Parameters:

description

Structure which will receive data collected by this provider.

Returns:: true on success, false otherwise.

Implements lm::LoadMonitor::StatsProvider.

bool lm::LoadMonitor::ProcessorStats::QueryData ( LoadSample & sample ) [virtual]

Query data and store them in the sample.

This will parse /proc/stat file and extract data about all processors. If at least one sample has been taken prior this call, statistics will be calculated.

Parameters:

sample

Structure which will receive data collected by this provider.