Package org.wildfly.common.cpu

Class CacheInfo

java.lang.Object

org.wildfly.common.cpu.CacheInfo

public final class CacheInfo
extends java.lang.Object

A class which exposes any available cache line information for the current CPU.

Author:

David M. Lloyd

Constructor Summary

Constructors

Constructor	Description
CacheInfo()

Method Summary

Modifier and Type	Method	Description
static CacheLevelInfo	getCacheLevelInfo(int index)	Get the CPU cache level information for a cache level.
static int	getLevelEntryCount()	Get the number of CPU cache level entries.
static int	getSmallestDataCacheLineSize()	Get the smallest known data cache line size.
static int	getSmallestInstructionCacheLineSize()	Get the smallest known instruction cache line size.
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheInfo

public CacheInfo()

Method Detail

getLevelEntryCount

public static int getLevelEntryCount()

Get the number of CPU cache level entries. If no cache information could be gathered, 0 is returned.

Returns:

the number of CPU cache levels, or 0 if unknown

getCacheLevelInfo

public static CacheLevelInfo getCacheLevelInfo(int index)

Get the CPU cache level information for a cache level. The index argument must be greater than zero and less than the number of levels returned by getLevelEntryCount().

Parameters:

index - the cache level index

Returns:

the CPU cache level information

getSmallestDataCacheLineSize

public static int getSmallestDataCacheLineSize()

Get the smallest known data cache line size. If no cache line sizes are known, 0 is returned. Note that smaller cache lines may exist if one or more cache line sizes are unknown.

Returns:

the smallest cache line size, or 0 if unknown

getSmallestInstructionCacheLineSize

public static int getSmallestInstructionCacheLineSize()

Get the smallest known instruction cache line size. If no cache line sizes are known, 0 is returned. Note that smaller cache lines may exist if one or more cache line sizes are unknown.

Returns:

the smallest cache line size, or 0 if unknown

main

public static void main(java.lang.String[] args)