Package oshi.hardware.platform.mac

Class MacCentralProcessor

java.lang.Object

oshi.hardware.common.AbstractCentralProcessor

oshi.hardware.platform.mac.MacCentralProcessor

All Implemented Interfaces:

CentralProcessor

@ThreadSafe
final class MacCentralProcessor
extends AbstractCentralProcessor

A CPU.

Nested Class Summary

Nested classes/interfaces inherited from interface oshi.hardware.CentralProcessor

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

Field Summary

Fields

Modifier and Type	Field	Description
private static int	ARM_CPUTYPE
private static java.util.Set<java.lang.String>	ARM_P_CORES
private static java.util.regex.Pattern	CPU_N
private static long	DEFAULT_FREQUENCY
private long	efficiencyCoreFrequency
private boolean	isArmCpu
private static org.slf4j.Logger	LOG
private static int	M1_CPUFAMILY
private static int	M2_CPUFAMILY
private static int	M3_CPUFAMILY
private long	performanceCoreFrequency
private java.util.function.Supplier<java.lang.String>	vendor

Constructor Summary

Constructors

Constructor	Description
MacCentralProcessor()

Method Summary

Modifier and Type	Method	Description
private void	calculateNominalFrequencies()
private java.util.Set<CentralProcessor.ProcessorCache>	getCacheValues(int perflevels)
private java.util.List<java.lang.String>	getFeatureFlagsFromSysctl()
private long	getMaxFreqFromByteArray(byte[] data)
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 Quartet<java.util.List<CentralProcessor.LogicalProcessor>,java.util.List<CentralProcessor.PhysicalProcessor>,java.util.List<CentralProcessor.ProcessorCache>,java.util.List<java.lang.String>>	initProcessorCounts()	Initializes logical and physical processor lists and feature flags.
private boolean	isArmCpu()
private static java.lang.String	platformExpert()
private static java.util.Map<java.lang.Integer,java.lang.String>	queryCompatibleStrings()
long	queryContextSwitches()	Get number of context switches
long[]	queryCurrentFreq()	Get processor current frequency.
long	queryInterrupts()	Get number of interrupts
long	queryMaxFreq()	Get processor max frequency.
long[][]	queryProcessorCpuLoadTicks()	Get the processor CPU load ticks
protected CentralProcessor.ProcessorIdentifier	queryProcessorId()	Updates logical and physical processor counts and arrays
long[]	querySystemCpuLoadTicks()	Get the system CPU load ticks

Methods inherited from class oshi.hardware.common.AbstractCentralProcessor

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface oshi.hardware.CentralProcessor

getProcessorCpuLoad, getSystemCpuLoad

Field Detail

LOG

private static final org.slf4j.Logger LOG

ARM_P_CORES

private static final java.util.Set<java.lang.String> ARM_P_CORES

ARM_CPUTYPE

private static final int ARM_CPUTYPE

See Also:

Constant Field Values

M1_CPUFAMILY

private static final int M1_CPUFAMILY

See Also:

Constant Field Values

M2_CPUFAMILY

private static final int M2_CPUFAMILY

See Also:

Constant Field Values

M3_CPUFAMILY

private static final int M3_CPUFAMILY

See Also:

Constant Field Values

DEFAULT_FREQUENCY

private static final long DEFAULT_FREQUENCY

See Also:

Constant Field Values

CPU_N

private static final java.util.regex.Pattern CPU_N

vendor

private final java.util.function.Supplier<java.lang.String> vendor

isArmCpu

private final boolean isArmCpu

performanceCoreFrequency

private long performanceCoreFrequency

efficiencyCoreFrequency

private long efficiencyCoreFrequency

Constructor Detail

MacCentralProcessor

MacCentralProcessor()

Method Detail

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

initProcessorCounts

protected Quartet<java.util.List<CentralProcessor.LogicalProcessor>,java.util.List<CentralProcessor.PhysicalProcessor>,java.util.List<CentralProcessor.ProcessorCache>,java.util.List<java.lang.String>> initProcessorCounts()

Description copied from class: AbstractCentralProcessor

Initializes logical and physical processor lists and feature flags.

Specified by:

initProcessorCounts in class AbstractCentralProcessor

Returns:

Lists of initialized Logical Processors, Physical Processors, Processor Caches, and Feature Flags.

getCacheValues

private java.util.Set<CentralProcessor.ProcessorCache> getCacheValues(int perflevels)

getFeatureFlagsFromSysctl

private java.util.List<java.lang.String> getFeatureFlagsFromSysctl()

querySystemCpuLoadTicks

public long[] querySystemCpuLoadTicks()

Description copied from class: AbstractCentralProcessor

Get the system CPU load ticks

Specified by:

querySystemCpuLoadTicks in class AbstractCentralProcessor

Returns:

The system CPU load ticks

queryCurrentFreq

public long[] queryCurrentFreq()

Description copied from class: AbstractCentralProcessor

Get processor current frequency.

Specified by:

queryCurrentFreq in class AbstractCentralProcessor

Returns:

The current frequency.

queryMaxFreq

public long queryMaxFreq()

Description copied from class: AbstractCentralProcessor

Get processor max frequency.

Overrides:

queryMaxFreq in class AbstractCentralProcessor

Returns:

The max frequency.

getSystemLoadAverage

public double[] getSystemLoadAverage(int nelem)

Description copied from interface: CentralProcessor

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.

This method is designed to provide a hint about the system load and may be queried frequently.

The way in which the load average is calculated is operating system specific but is typically a damped time-dependent average. Linux includes processes waiting for system resources such as disks, while macOS and Unix consider only processes waiting for CPU.

Windows does not provide a load average. Users may set the configuration property oshi.os.windows.loadaverage to true to start a daemon thread which will provide a similar metric.

The load average may be unavailable on some platforms (e.g., Windows without the above configuration). If the load average is not available, a negative value is returned.

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.

queryProcessorCpuLoadTicks

public long[][] queryProcessorCpuLoadTicks()

Description copied from class: AbstractCentralProcessor

Get the processor CPU load ticks

Specified by:

queryProcessorCpuLoadTicks in class AbstractCentralProcessor

Returns:

The processor CPU load ticks

queryContextSwitches

public long queryContextSwitches()

Description copied from class: AbstractCentralProcessor

Get number of context switches

Specified by:

queryContextSwitches in class AbstractCentralProcessor

Returns:

The context switches

queryInterrupts

public long queryInterrupts()

Description copied from class: AbstractCentralProcessor

Get number of interrupts

Specified by:

queryInterrupts in class AbstractCentralProcessor

Returns:

The interrupts

platformExpert

private static java.lang.String platformExpert()

queryCompatibleStrings

private static java.util.Map<java.lang.Integer,java.lang.String> queryCompatibleStrings()

isArmCpu

private boolean isArmCpu()

calculateNominalFrequencies

private void calculateNominalFrequencies()

getMaxFreqFromByteArray

private long getMaxFreqFromByteArray(byte[] data)