Package oshi.hardware.platform.mac
Class MacCentralProcessor
java.lang.Object
oshi.hardware.common.AbstractCentralProcessor
oshi.hardware.platform.mac.MacCentralProcessor
- All Implemented Interfaces:
CentralProcessor
A CPU.
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Nested Class Summary
Nested classes/interfaces inherited from interface oshi.hardware.CentralProcessor
CentralProcessor.LogicalProcessor, CentralProcessor.PhysicalProcessor, CentralProcessor.ProcessorCache, CentralProcessor.ProcessorIdentifier, CentralProcessor.TickType
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final int
private static final Pattern
private static final long
private long
private final boolean
private static final org.slf4j.Logger
private static final int
private static final int
private static final int
private long
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprivate void
private Set
<CentralProcessor.ProcessorCache> getCacheValues
(int perflevels) 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
<List<CentralProcessor.LogicalProcessor>, List<CentralProcessor.PhysicalProcessor>, List<CentralProcessor.ProcessorCache>, List<String>> Initializes logical and physical processor lists and feature flags.private boolean
isArmCpu()
private static String
long
Get number of context switcheslong[]
Get processor current frequency.long
Get number of interruptslong
Get processor max frequency.long[][]
Get the processor CPU load ticksprotected CentralProcessor.ProcessorIdentifier
Updates logical and physical processor counts and arrayslong[]
Get the system CPU load ticksMethods 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
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Field Details
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LOG
private static final org.slf4j.Logger LOG -
ARM_P_CORES
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ARM_CPUTYPE
private static final int ARM_CPUTYPE- See Also:
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M1_CPUFAMILY
private static final int M1_CPUFAMILY- See Also:
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M2_CPUFAMILY
private static final int M2_CPUFAMILY- See Also:
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M3_CPUFAMILY
private static final int M3_CPUFAMILY- See Also:
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DEFAULT_FREQUENCY
private static final long DEFAULT_FREQUENCY- See Also:
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CPU_N
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vendor
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isArmCpu
private final boolean isArmCpu -
performanceCoreFrequency
private long performanceCoreFrequency -
efficiencyCoreFrequency
private long efficiencyCoreFrequency
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Constructor Details
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MacCentralProcessor
MacCentralProcessor()
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Method Details
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queryProcessorId
Description copied from class:AbstractCentralProcessor
Updates logical and physical processor counts and arrays- Specified by:
queryProcessorId
in classAbstractCentralProcessor
- Returns:
- An array of initialized Logical Processors
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initProcessorCounts
protected Quartet<List<CentralProcessor.LogicalProcessor>,List<CentralProcessor.PhysicalProcessor>, initProcessorCounts()List<CentralProcessor.ProcessorCache>, List<String>> Description copied from class:AbstractCentralProcessor
Initializes logical and physical processor lists and feature flags.- Specified by:
initProcessorCounts
in classAbstractCentralProcessor
- Returns:
- Lists of initialized Logical Processors, Physical Processors, Processor Caches, and Feature Flags.
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getCacheValues
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getFeatureFlagsFromSysctl
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querySystemCpuLoadTicks
public long[] querySystemCpuLoadTicks()Description copied from class:AbstractCentralProcessor
Get the system CPU load ticks- Specified by:
querySystemCpuLoadTicks
in classAbstractCentralProcessor
- Returns:
- The system CPU load ticks
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queryCurrentFreq
public long[] queryCurrentFreq()Description copied from class:AbstractCentralProcessor
Get processor current frequency.- Specified by:
queryCurrentFreq
in classAbstractCentralProcessor
- Returns:
- The current frequency.
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queryMaxFreq
public long queryMaxFreq()Description copied from class:AbstractCentralProcessor
Get processor max frequency.- Overrides:
queryMaxFreq
in classAbstractCentralProcessor
- Returns:
- The max frequency.
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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
totrue
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.
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queryProcessorCpuLoadTicks
public long[][] queryProcessorCpuLoadTicks()Description copied from class:AbstractCentralProcessor
Get the processor CPU load ticks- Specified by:
queryProcessorCpuLoadTicks
in classAbstractCentralProcessor
- Returns:
- The processor CPU load ticks
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queryContextSwitches
public long queryContextSwitches()Description copied from class:AbstractCentralProcessor
Get number of context switches- Specified by:
queryContextSwitches
in classAbstractCentralProcessor
- Returns:
- The context switches
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queryInterrupts
public long queryInterrupts()Description copied from class:AbstractCentralProcessor
Get number of interrupts- Specified by:
queryInterrupts
in classAbstractCentralProcessor
- Returns:
- The interrupts
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platformExpert
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queryCompatibleStrings
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isArmCpu
private boolean isArmCpu() -
calculateNominalFrequencies
private void calculateNominalFrequencies() -
getMaxFreqFromByteArray
private long getMaxFreqFromByteArray(byte[] data)
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