Package electrostatic4j.snaploader.platform.util

Class NativeVariant.Cpu

java.lang.Object
electrostatic4j.snaploader.platform.util.NativeVariant.Cpu
Enclosing class:
NativeVariant
public static final class NativeVariant.Cpu extends Object
A namespace class exposing the CPU propositions.

  • Method Summary

    Modifier and Type
    Method
    Description
    static boolean
    hasExtensions(String... requiredNames)
    Tests whether the named ISA extensions are all present.
    static boolean
    is64()
    Tests whether the current system architecture is a 64-bit chipset (NOT APPLICABLE TO ALL CPUs).
    static boolean
    isAMD()
    Tests whether the current CPU vendor is an AMD vendor (e.g., x86_64 Intel Chipset).
    static boolean
    isARM()
    Tests whether the current CPU vendor is an ARM vendor (e.g., Broadcom Chipset).
    static boolean
    isPpc()
    Tests whether the current runtime environment is operating on a PowerPc CPU, typically Ppc only means 32-bit.
    static boolean
    isPpc64le()
    Tests whether the current runtime environment is operating on a PowerPc CPU, typically the 64-bit version with the little endian byte-order (i.e., le architecture).
    static boolean
    isRiscV()
    Tests whether the current environment is running on a RISC-V (reduced instruction-set) CPU, typically plain RISC-V means 32-bit, and with the added predicate is64() adds the 64-bit predicate.
    static boolean
    isS390()
    Tests whether the current runtime environment is operating on an IBM System/390 CPU, typically plain s390 means the 32-bit version.
    static boolean
    isS390x()
    Tests whether the current runtime environment is operating on an IBM System/390 CPU, typically the 64-bit version.
    static boolean
    isSparc()
    Tests whether the current runtime environment is operating on a Sparc CPU, typically plain Sparc means 32-bit.
    static boolean
    isSparcV9()
    Tests whether the current runtime environment is operating on a SparcV9 CPU, the typical 64-bit version of the Sparc CPU.
    static boolean
    isX86()
    Tests whether the current system architecture is of an x86 chipset, typically 32-bit intel chipsets.

    Methods inherited from class java.lang.Object

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

  • Method Details

    • isRiscV

      public static boolean isRiscV()
      Tests whether the current environment is running on a RISC-V (reduced instruction-set) CPU, typically plain RISC-V means 32-bit, and with the added predicate is64() adds the 64-bit predicate.
      Returns:
      true if the current runtime is operating on a RISC-V

    • isSparc

      public static boolean isSparc()
      Tests whether the current runtime environment is operating on a Sparc CPU, typically plain Sparc means 32-bit.
      Returns:
      true if the current runtime is operating on a Sparc.
      See Also:

    • isSparcV9

      public static boolean isSparcV9()
      Tests whether the current runtime environment is operating on a SparcV9 CPU, the typical 64-bit version of the Sparc CPU.
      Returns:
      true if the current runtime environment is running on a SparcV9.
      See Also:

    • isPpc

      public static boolean isPpc()
      Tests whether the current runtime environment is operating on a PowerPc CPU, typically Ppc only means 32-bit.
      Returns:
      true if the current runtime environment is operating on a PPC.
      See Also:

    • isPpc64le

      public static boolean isPpc64le()
      Tests whether the current runtime environment is operating on a PowerPc CPU, typically the 64-bit version with the little endian byte-order (i.e., le architecture).
      Returns:
      true if the current runtime environment is operating on a PPC-64-bit-le.
      See Also:

    • isS390

      public static boolean isS390()
      Tests whether the current runtime environment is operating on an IBM System/390 CPU, typically plain s390 means the 32-bit version.
      Returns:
      true if the current runtime environment is operating on an IBM System/390.
      See Also:

    • isS390x

      public static boolean isS390x()
      Tests whether the current runtime environment is operating on an IBM System/390 CPU, typically the 64-bit version.
      Returns:
      true if the current runtime environment is operating on an IBM System/390-64-bit.
      See Also:

    • is64

      public static boolean is64()
      Tests whether the current system architecture is a 64-bit chipset (NOT APPLICABLE TO ALL CPUs).
      Returns:
      true if the current OS architecture is a 64-bit chipset, false otherwise.

    • isX86

      public static boolean isX86()
      Tests whether the current system architecture is of an x86 chipset, typically 32-bit intel chipsets.
      Returns:
      true if the current OS architecture is of an x86 chipset, false otherwise.

    • isAMD

      public static boolean isAMD()
      Tests whether the current CPU vendor is an AMD vendor (e.g., x86_64 Intel Chipset).
      Returns:
      true if the current CPU vendor is an AMD vendor.

    • isARM

      public static boolean isARM()
      Tests whether the current CPU vendor is an ARM vendor (e.g., Broadcom Chipset).
      Returns:
      true if the current CPU vendor is an ARM vendor.

    • hasExtensions

      public static boolean hasExtensions(String... requiredNames)
      Tests whether the named ISA extensions are all present.

      Extension names are case-insensitive and might be reported differently by different operating systems or even by different versions of the same operating system.

      Examples of extension names:

      • "3dnow" for AMD 3D-Now
      • "avx" for x86 AVX
      • "avx2" for x86 AVX2
      • "avx512f" for x86 AVX512F
      • "bmi1" for x86 bit-manipulation instruction set 1
      • "f16c" for x86 half-precision floating-point
      • "fma" for x86 fused multiply-add
      • "fmac" for Arm floating-point multiply-accumulate
      • "mmx" for x86 MMX
      • "neon" for Arm NEON
      • "sse3" for x86 SSE3
      • "sse4_1" for x86 SSE4.1
      • "sse4_2" for x86 SSE4.2
      • "ssse3" for x86 SSSE3
      • "v8" for Arm V8
      • "v8_crc32" for Arm V8 extra CRC32
      • "v8_crypto" for Arm V8 extra cryptographic
      • "v81_atomic" for Arm V8.1 atomic
      • "v82_dp" for Arm V8.2 DP
      • "v83_jscvt" for Arm v8.3 JSCVT
      • "v83_lrcpc" for Arm v8.3 LRCPC

      Wikipedia provides informal descriptions of many ISA extensions. https://en.wikipedia.org/wiki/Template:Multimedia_extensions offers a good starting point.

      Parameters:
      requiredNames - the names of the extensions to test for
      Returns:
      true if the current platform supports all of the specified extensions, otherwise false