Class PerfCounterQueryExecutorJNA

java.lang.Object

oshi.driver.windows.perfmon.PerfCounterQueryExecutorJNA

All Implemented Interfaces:

PerfCounterQueryExecutor

public final class PerfCounterQueryExecutorJNA
extends Object
implements PerfCounterQueryExecutor

JNA-based PerfCounterQueryExecutor implementation.

Field Summary

Fields

Modifier and Type	Field	Description
static final PerfCounterQueryExecutorJNA	INSTANCE	Singleton instance.

Method Summary

Modifier and Type	Method	Description
boolean	isPerfDiskDisabled()	Returns whether the disk performance counters are disabled.
boolean	isPerfOsDisabled()	Returns whether the OS performance counters are disabled.
boolean	isPerfProcDisabled()	Returns whether the process performance counters are disabled.
boolean	isWin7OrGreater()	Returns whether the OS is Windows 7 or greater.
<T extends Enum<T> & PdhCounterWildcardProperty> Pair<List<String>, Map<T, List<Long>>>	queryInstancesAndValues(Class<T> propertyEnum, String perfObject, String perfWmiClass)	Queries performance counter values for wildcard (multi-instance) counters.
<T extends Enum<T> & PdhCounterWildcardProperty> Pair<List<String>, Map<T, List<Long>>>	queryInstancesAndValues(Class<T> propertyEnum, String perfObject, String perfWmiClass, String customFilter)	Queries performance counter values for wildcard counters with a custom instance filter.
<T extends Enum<T> & PdhCounterWildcardProperty> Pair<List<String>, Map<T, List<Long>>>	queryInstancesAndValuesFromPDH(Class<T> propertyEnum, String perfObject)	Queries performance counter values from PDH only (no WMI fallback).
<T extends Enum<T> & PdhCounterWildcardProperty> Pair<List<String>, Map<T, List<Long>>>	queryInstancesAndValuesFromWMI(Class<T> propertyEnum, String perfWmiClass)	Queries performance counter values from WMI directly (formatted/cooked data).
<T extends Enum<T> & PdhCounterProperty> Map<T,Long>	queryValues(Class<T> propertyEnum, String perfObject, String perfWmiClass)	Queries performance counter values for a fixed set of counters.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final PerfCounterQueryExecutorJNA INSTANCE

Singleton instance.

Method Details

queryValues

public <T extends Enum<T> & PdhCounterProperty>
Map<T,Long> queryValues(Class<T> propertyEnum,
 String perfObject,
 String perfWmiClass)

Description copied from interface: PerfCounterQueryExecutor

Queries performance counter values for a fixed set of counters.

Specified by:

queryValues in interface PerfCounterQueryExecutor

Type Parameters:

T - the enum type implementing PdhCounterProperty

Parameters:

propertyEnum - the property enum class

perfObject - the performance object name

perfWmiClass - the WMI class name for fallback queries

Returns:

a map of enum constants to their counter values, or an empty map if disabled

queryInstancesAndValues

public <T extends Enum<T> & PdhCounterWildcardProperty>
Pair<List<String>, Map<T, List<Long>>> queryInstancesAndValues(Class<T> propertyEnum,
 String perfObject,
 String perfWmiClass)

Description copied from interface: PerfCounterQueryExecutor

Queries performance counter values for wildcard (multi-instance) counters.

Specified by:

queryInstancesAndValues in interface PerfCounterQueryExecutor

Type Parameters:

T - the enum type implementing PdhCounterWildcardProperty

Parameters:

propertyEnum - the property enum class

perfObject - the performance object name

perfWmiClass - the WMI class name for fallback queries

Returns:

a pair of instance names and a map of enum constants to lists of values, or empty if disabled

queryInstancesAndValues

public <T extends Enum<T> & PdhCounterWildcardProperty>
Pair<List<String>, Map<T, List<Long>>> queryInstancesAndValues(Class<T> propertyEnum,
 String perfObject,
 String perfWmiClass,
 String customFilter)

Description copied from interface: PerfCounterQueryExecutor

Queries performance counter values for wildcard counters with a custom instance filter.

Specified by:

queryInstancesAndValues in interface PerfCounterQueryExecutor

Type Parameters:

T - the enum type implementing PdhCounterWildcardProperty

Parameters:

propertyEnum - the property enum class

perfObject - the performance object name

perfWmiClass - the WMI class name for fallback queries

customFilter - custom PDH instance filter

Returns:

a pair of instance names and a map of enum constants to lists of values, or empty if disabled

queryInstancesAndValuesFromWMI

public <T extends Enum<T> & PdhCounterWildcardProperty>
Pair<List<String>, Map<T, List<Long>>> queryInstancesAndValuesFromWMI(Class<T> propertyEnum,
 String perfWmiClass)

Description copied from interface: PerfCounterQueryExecutor

Queries performance counter values from WMI directly (formatted/cooked data).

Specified by:

queryInstancesAndValuesFromWMI in interface PerfCounterQueryExecutor

Type Parameters:

T - the enum type implementing PdhCounterWildcardProperty

Parameters:

propertyEnum - the property enum class

perfWmiClass - the WMI class name

Returns:

a pair of instance names and a map of enum constants to lists of values, or empty if disabled

queryInstancesAndValuesFromPDH

public <T extends Enum<T> & PdhCounterWildcardProperty>
Pair<List<String>, Map<T, List<Long>>> queryInstancesAndValuesFromPDH(Class<T> propertyEnum,
 String perfObject)

Description copied from interface: PerfCounterQueryExecutor

Queries performance counter values from PDH only (no WMI fallback).

Specified by:

queryInstancesAndValuesFromPDH in interface PerfCounterQueryExecutor

Type Parameters:

T - the enum type implementing PdhCounterWildcardProperty

Parameters:

propertyEnum - the property enum class

perfObject - the performance object name

Returns:

a pair of instance names and a map of enum constants to lists of values

isPerfOsDisabled

public boolean isPerfOsDisabled()

Description copied from interface: PerfCounterQueryExecutor

Returns whether the OS performance counters are disabled.

Specified by:

isPerfOsDisabled in interface PerfCounterQueryExecutor

Returns:

true if PerfOS counters are disabled

isPerfProcDisabled

public boolean isPerfProcDisabled()

Description copied from interface: PerfCounterQueryExecutor

Returns whether the process performance counters are disabled.

Specified by:

isPerfProcDisabled in interface PerfCounterQueryExecutor

Returns:

true if PerfProc counters are disabled

isPerfDiskDisabled

public boolean isPerfDiskDisabled()

Description copied from interface: PerfCounterQueryExecutor

Returns whether the disk performance counters are disabled.

Specified by:

isPerfDiskDisabled in interface PerfCounterQueryExecutor

Returns:

true if PerfDisk counters are disabled

isWin7OrGreater

public boolean isWin7OrGreater()

Description copied from interface: PerfCounterQueryExecutor

Returns whether the OS is Windows 7 or greater.

Specified by:

isWin7OrGreater in interface PerfCounterQueryExecutor

Returns:

true if Windows 7+