Package freenet.support.CPUInformation

Interface CPUInfo

All Known Subinterfaces:

AMDCPUInfo, IntelCPUInfo, VIACPUInfo

All Known Implementing Classes:

AMDInfoImpl, CPUIDCPUInfo, IntelInfoImpl, VIAInfoImpl

public interface CPUInfo

An interface for classes that provide lowlevel information about CPU's

Author:

Iakin

Method Summary

Modifier and Type	Method	Description
String	getCPUModelString()
String	getVendor()
boolean	hasABM()	Also known as LZCNT
boolean	hasADX()	Intel Multi-Precision Add-Carry Instruction Extensions Available in Broadwell.
boolean	hasAES()
boolean	hasAVX()
boolean	hasAVX2()
boolean	hasAVX512()	Does the CPU supports the AVX-512 Foundation instruction set? Quote wikipedia: AVX-512 consists of multiple extensions not all meant to be supported by all processors implementing them.
boolean	hasBMI1()
boolean	hasBMI2()
boolean	hasFMA3()
boolean	hasMMX()
boolean	hasMOVBE()
boolean	hasSSE()
boolean	hasSSE2()
boolean	hasSSE3()
boolean	hasSSE41()
boolean	hasSSE42()
boolean	hasSSE4A()	AMD K10 only.
boolean	hasTBM()	Trailing Bit Manipulation (AMD feature)
boolean	hasX64()

Method Detail

getVendor

String getVendor()

Returns:

A string indicating the vendor of the CPU.

getCPUModelString

String getCPUModelString()
                  throws UnknownCPUException

Returns:

A string detailing what type of CPU that is present in the machine. I.e. 'Pentium IV' etc.

Throws:

UnknownCPUException - If for any reason the retrieval of the requested information failed. The message encapsulated in the execption indicates the cause of the failure.

hasMMX

boolean hasMMX()

Returns:

true iff the CPU supports the MMX instruction set.

hasSSE

boolean hasSSE()

Returns:

true iff the CPU supports the SSE instruction set.

hasSSE2

boolean hasSSE2()

Returns:

true iff the CPU supports the SSE2 instruction set.

hasSSE3

boolean hasSSE3()

Returns:

true iff the CPU supports the SSE3 instruction set.

hasSSE41

boolean hasSSE41()

Returns:

true iff the CPU supports the SSE4.1 instruction set.

hasSSE42

boolean hasSSE42()

Returns:

true iff the CPU supports the SSE4.2 instruction set.

hasSSE4A

boolean hasSSE4A()

AMD K10 only. Not supported on Intel. ref: https://en.wikipedia.org/wiki/SSE4.2#SSE4a

Returns:

true iff the CPU supports the SSE4A instruction set.

hasAVX

boolean hasAVX()

Returns:

true iff the CPU supports the AVX instruction set.

Since:

0.9.26

hasAVX2

boolean hasAVX2()

Returns:

true iff the CPU supports the AVX2 instruction set.

Since:

0.9.26

hasAVX512

boolean hasAVX512()

Does the CPU supports the AVX-512 Foundation instruction set? Quote wikipedia: AVX-512 consists of multiple extensions not all meant to be supported by all processors implementing them. Only the core extension AVX-512F (AVX-512 Foundation) is required by all implementations. ref: https://en.wikipedia.org/wiki/AVX-512

Returns:

true iff the CPU supports the AVX-512 Foundation instruction set.

Since:

0.9.26

hasADX

boolean hasADX()

Intel Multi-Precision Add-Carry Instruction Extensions Available in Broadwell. Unused until GMP 6.1.

Returns:

true iff the CPU supports the ADX instruction set.

Since:

0.9.26

hasTBM

boolean hasTBM()

Trailing Bit Manipulation (AMD feature)

Returns:

true iff the CPU supports TBM.

Since:

0.9.26, broken before 0.9.35, fixed in 0.9.35

hasAES

boolean hasAES()

Returns:

true iff the CPU supports the AES-NI instruction set.

Since:

0.9.14

hasX64

boolean hasX64()

Returns:

true iff the CPU supports the 64-bit support

Since:

0.9.26

hasBMI1

boolean hasBMI1()

Returns:

true iff the CPU supports the BMI1 instruction set.

Since:

0.9.26

hasBMI2

boolean hasBMI2()

Returns:

true iff the CPU supports the BMI2 instruction set.

Since:

0.9.26

hasFMA3

boolean hasFMA3()

Returns:

true iff the CPU supports the FMA3 instruction set.

Since:

0.9.26

hasMOVBE

boolean hasMOVBE()

Returns:

true iff the CPU supports the MOVBE instruction set.

Since:

0.9.26

hasABM

boolean hasABM()

Also known as LZCNT

Returns:

true iff the CPU supports the ABM instruction set.

Since:

0.9.26