Class NetBsdCentralProcessor

java.lang.Object

oshi.hardware.common.AbstractCentralProcessor

oshi.hardware.common.platform.unix.BsdCentralProcessor

oshi.hardware.common.platform.unix.netbsd.NetBsdCentralProcessor

All Implemented Interfaces:

CentralProcessor

@ThreadSafe
public class NetBsdCentralProcessor
extends BsdCentralProcessor

NetBSD Central Processor implementation. Shares the dmesg-based topology and cache parsing with the other BSDs via BsdCentralProcessor; the processor identification, frequency, CPU ticks, and load average are read from command output and name-based sysctls specific to NetBSD.

Nested Class Summary

Nested classes/interfaces inherited from interface CentralProcessor

CentralProcessor.LogicalProcessor, CentralProcessor.PhysicalProcessor, CentralProcessor.ProcessorCache, CentralProcessor.ProcessorIdentifier, CentralProcessor.TickType

Modifier and Type	Interface	Description
static class	CentralProcessor.LogicalProcessor	A class representing a Logical Processor and its replationship to physical processors, physical packages, and logical groupings such as NUMA Nodes and Processor groups, useful for identifying processor topology.
static class	CentralProcessor.PhysicalProcessor	A class representing a Physical Processor (a core) providing per-core statistics that may vary, particularly in hybrid/modular processors.
static class	CentralProcessor.ProcessorCache	A class representing CPU Cache Memory.
static final class	CentralProcessor.ProcessorIdentifier	A class encapsulating ghe CPU's identifier strings ,including name, vendor, stepping, model, and family information (also called the signature of a CPU)
static enum	CentralProcessor.TickType	Index of CPU tick counters in the CentralProcessor.getSystemCpuLoadTicks() and CentralProcessor.getProcessorCpuLoadTicks() arrays.

Constructor Summary

Constructors

Constructor	Description
NetBsdCentralProcessor()

Method Summary

Modifier and Type	Method	Description
double[]	getSystemLoadAverage(int nelem)	Returns the system load average for the number of elements specified, up to 3, representing 1, 5, and 15 minutes.
protected long[]	queryCurrentFreq()	Get processor current frequency.
protected long[][]	queryProcessorCpuLoadTicks()	Get the processor CPU load ticks
protected CentralProcessor.ProcessorIdentifier	queryProcessorId()	Updates logical and physical processor counts and arrays
protected long[]	querySystemCpuLoadTicks()	Get the system CPU load ticks
protected Pair<Long,Long>	queryVmStats()	Reads the number of context switches and interrupts from vmstat.
protected int	sysctl(String name, int def)	Reads an integer sysctl value by name.

Methods inherited from class BsdCentralProcessor

initProcessorCounts, queryContextSwitches, queryInterrupts

Modifier and Type	Method	Description
protected Quartet<List<CentralProcessor.LogicalProcessor>, List<CentralProcessor.PhysicalProcessor>, List<CentralProcessor.ProcessorCache>, List<String>>	initProcessorCounts()	Initializes logical and physical processor lists and feature flags.
protected long	queryContextSwitches()	Get number of context switches
protected long	queryInterrupts()	Get number of interrupts

Methods inherited from class AbstractCentralProcessor

createProcessorID, createProcessorID, createProcListFromDmesg, getContextSwitches, getCurrentFreq, getFeatureFlags, getInterrupts, getLogicalProcessorCount, getLogicalProcessors, getMaxFreq, getPhysicalPackageCount, getPhysicalProcessorCount, getPhysicalProcessors, getProcessorCaches, getProcessorCpuLoadBetweenTicks, getProcessorCpuLoadBetweenTicks, getProcessorCpuLoadTicks, getProcessorIdentifier, getSystemCpuLoadBetweenTicks, getSystemCpuLoadBetweenTicks, getSystemCpuLoadTicks, orderedProcCaches, queryMaxFreq, toString

Modifier and Type	Method	Description
protected static String	createProcessorID(String stepping, String model, String family, String[] flags)	Creates a Processor ID by encoding the stepping, model, family, and feature flags.
protected static String	createProcessorID(String stepping, String model, String family, String[] flags, long hwcap)	Creates a Processor ID by encoding the stepping, model, family, and feature flags.
protected List<CentralProcessor.PhysicalProcessor>	createProcListFromDmesg(List<CentralProcessor.LogicalProcessor> logProcs, Map<Integer,String> dmesg)	Creates a list of physical processors from dmesg output.
long	getContextSwitches()	Get the number of system-wide context switches which have occurred.
long[]	getCurrentFreq()	Attempts to return the current frequency (in Hz), of the logical processors on this CPU.
List<String>	getFeatureFlags()	Returns a list of platform-specific strings which identify CPU Feature Flags.
long	getInterrupts()	Get the number of system-wide interrupts which have occurred.
int	getLogicalProcessorCount()	Get the number of logical CPUs available for processing.
List<CentralProcessor.LogicalProcessor>	getLogicalProcessors()	Returns an UnmodifiableList of the CPU's logical processors.
long	getMaxFreq()	Maximum frequeny (in Hz), of the logical processors on this CPU.
int	getPhysicalPackageCount()	Get the number of packages/sockets in the system.
int	getPhysicalProcessorCount()	Get the number of physical CPUs/cores available for processing.
List<CentralProcessor.PhysicalProcessor>	getPhysicalProcessors()	Returns an UnmodifiableList of the CPU's physical processors.
List<CentralProcessor.ProcessorCache>	getProcessorCaches()	Makes a best-effort attempt to identify the CPU's processor caches.
double[]	getProcessorCpuLoadBetweenTicks(long[][] oldTicks)	Returns the "recent cpu usage" for all logical processors by counting ticks from CentralProcessor.getProcessorCpuLoadTicks() between the user-provided value from a previous call.
double[]	getProcessorCpuLoadBetweenTicks(long[][] oldTicks, long[][] ticks)	Returns the "recent cpu usage" for all logical processors by counting ticks from CentralProcessor.getProcessorCpuLoadTicks() between the user-provided value from a previous call.
long[][]	getProcessorCpuLoadTicks()	Get Processor CPU Load tick counters.
CentralProcessor.ProcessorIdentifier	getProcessorIdentifier()	The CPU's identifier strings ,including name, vendor, stepping, model, and family information (also called the signature of a CPU).
double	getSystemCpuLoadBetweenTicks(long[] oldTicks)	Returns the "recent cpu usage" for the whole system by counting ticks from CentralProcessor.getSystemCpuLoadTicks() between the user-provided value from a previous call.
double	getSystemCpuLoadBetweenTicks(long[] oldTicks, long[] ticks)	Returns the "recent cpu usage" for the whole system by counting ticks between two user-provided values, retrieved from CentralProcessor.getSystemCpuLoadTicks() at different points in time.
long[]	getSystemCpuLoadTicks()	Get System-wide CPU Load tick counters.
static List<CentralProcessor.ProcessorCache>	orderedProcCaches(Set<CentralProcessor.ProcessorCache> caches)	Filters a set of processor caches to an ordered list
protected long	queryMaxFreq()	Get processor max frequency.
String	toString()

Methods inherited from class Object

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

Methods inherited from interface CentralProcessor

getProcessorCpuLoad, getSystemCpuLoad

Modifier and Type	Method	Description
default double[]	getProcessorCpuLoad(long delay)	This is a convenience method which collects an initial set of ticks using CentralProcessor.getProcessorCpuLoadTicks() and passes that result to CentralProcessor.getProcessorCpuLoadBetweenTicks(long[][]) after the specified delay.
default double	getSystemCpuLoad(long delay)	This is a convenience method which collects an initial set of ticks using CentralProcessor.getSystemCpuLoadTicks() and passes that result to CentralProcessor.getSystemCpuLoadBetweenTicks(long[]) after the specified delay.

Constructor Details

NetBsdCentralProcessor

public NetBsdCentralProcessor()

Method Details

sysctl

protected int sysctl(String name,
 int def)

Description copied from class: BsdCentralProcessor

Reads an integer sysctl value by name.

Specified by:

sysctl in class BsdCentralProcessor

Parameters:

name - the sysctl name

def - the default value

Returns:

the sysctl integer value or the default

queryProcessorId

protected CentralProcessor.ProcessorIdentifier queryProcessorId()

Description copied from class: AbstractCentralProcessor

Updates logical and physical processor counts and arrays

Specified by:

queryProcessorId in class AbstractCentralProcessor

Returns:

An array of initialized Logical Processors

queryCurrentFreq

protected long[] queryCurrentFreq()

Description copied from class: AbstractCentralProcessor

Get processor current frequency.

Specified by:

queryCurrentFreq in class AbstractCentralProcessor

Returns:

The current frequency.

queryVmStats

protected Pair<Long,Long> queryVmStats()

Description copied from class: BsdCentralProcessor

Reads the number of context switches and interrupts from vmstat. The label text and parsing differ between OpenBSD and NetBSD, so each subclass supplies its own implementation.

Specified by:

queryVmStats in class BsdCentralProcessor

Returns:

a Pair of (context switches, interrupts)

querySystemCpuLoadTicks

protected long[] querySystemCpuLoadTicks()

Get the system CPU load ticks

Specified by:

querySystemCpuLoadTicks in class AbstractCentralProcessor

Returns:

The system CPU load ticks

queryProcessorCpuLoadTicks

protected long[][] queryProcessorCpuLoadTicks()

Get the processor CPU load ticks

Specified by:

queryProcessorCpuLoadTicks in class AbstractCentralProcessor

Returns:

The processor CPU load ticks

getSystemLoadAverage

public double[] getSystemLoadAverage(int nelem)

Returns the system load average for the number of elements specified, up to 3, representing 1, 5, and 15 minutes. The system load average is the sum of the number of runnable entities queued to the available processors and the number of runnable entities running on the available processors averaged over a period of time. The way in which the load average is calculated is operating system specific but is typically a damped time-dependent average. If the load average is not available, a negative value is returned. This method is designed to provide a hint about the system load and may be queried frequently.

The load average may be unavailable on some platforms (e.g., Windows) where it is expensive to implement this method.

Parameters:

nelem - Number of elements to return.

Returns:

an array of the system load averages for 1, 5, and 15 minutes with the size of the array specified by nelem; or negative values if not available.