lm::LoadMonitor::ProcessorEnumCache Class Reference

Cache for data related to processor usage. More...

Inheritance diagram for lm::LoadMonitor::ProcessorEnumCache:


Public Member Functions
	ProcessorEnumCache (void)
	Create new cache object.
virtual	~ProcessorEnumCache (void)
	Destory cache object.
virtual bool	AddToRefresher (IWbemConfigureRefresher configure, IWbemServices services)
	Add object to the refresher.
virtual void	Release (void)
	Free resources.
virtual bool	QueryData (LoadSample &target)
	Query data.
size_t	GetCount ()
	Get number of processors.
Protected Member Functions
virtual bool	CacheImpl (IWbemObjectAccess *access_object)
	Cache property handles.
Private Attributes
IWbemHiPerfEnum *	enum_processor_usage
	Enumerator for Win32_PerfRawData_PerfOS_Processor or Win32_PerfFormattedData_PerfOS_Processor classes.
long	enum_processor_usage_id
	ID of the CPU usage enumeration.
long	id_processor_time
	ID of the "PercentProcessorTime" property.
long	id_processor_name
	ID of the "Name" property.

Detailed Description

Cache for data related to processor usage.

Constructor & Destructor Documentation

lm::LoadMonitor::ProcessorEnumCache::ProcessorEnumCache ( void )

Create new cache object.

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

Destory cache object.

Member Function Documentation

bool lm::LoadMonitor::ProcessorEnumCache::AddToRefresher	(	IWbemConfigureRefresher *	configure,
		IWbemServices *	services
	)			`[virtual]`

Add object to the refresher.

Parameters:

	configure	Configure refresher which will be used to add required objects to the refresher.
	services	WMI service provider.

Returns:: true on success, false otherwise.

Implements lm::LoadMonitor::PerformanceCounterEnumCache.

bool lm::LoadMonitor::ProcessorEnumCache::CacheImpl ( IWbemObjectAccess * access_object ) [protected, virtual]

Cache property handles.

Parameters:

access_object

Object which contains all properties that need to be cached.

Returns:: true on success, false otherwise.

Implements lm::LoadMonitor::PerformanceCounterEnumCache.

size_t lm::LoadMonitor::ProcessorEnumCache::GetCount ( )

Get number of processors.

Returns:: Number of processors installed on the computer.

bool lm::LoadMonitor::ProcessorEnumCache::QueryData ( LoadSample & target ) [virtual]

Query data.

Query data after it has been refreshed. This will collect all data from enumerators previously registered with refresher via AddToRefresher method and store resulting data in provided load sample. If data are stored in array (e.g. CPU usage on multi-processor machines), arrays will be automatically allocated. If query fails, sample will remain unmodified.

Parameters:

target

Reference to the load sample which will receive data.