120 lines
2.8 KiB
Ruby
120 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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module Hardware
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class CPU
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class << self
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undef type, family, universal_archs, features, sse4?
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# These methods use info spewed out by sysctl.
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# Look in <mach/machine.h> for decoding info.
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def type
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case sysctl_int("hw.cputype")
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when 7
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:intel
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else
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:dunno
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end
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end
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def family
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case sysctl_int("hw.cpufamily")
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when 0x73d67300 # Yonah: Core Solo/Duo
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:core
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when 0x426f69ef # Merom: Core 2 Duo
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:core2
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when 0x78ea4fbc # Penryn
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:penryn
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when 0x6b5a4cd2 # Nehalem
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:nehalem
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when 0x573B5EEC # Arrandale
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:arrandale
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when 0x5490B78C # Sandy Bridge
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:sandybridge
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when 0x1F65E835 # Ivy Bridge
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:ivybridge
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when 0x10B282DC # Haswell
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:haswell
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when 0x582ed09c # Broadwell
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:broadwell
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when 0x37fc219f # Skylake
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:skylake
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when 0x0f817246 # Kaby Lake
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:kabylake
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else
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:dunno
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end
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end
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# Returns an array that's been extended with ArchitectureListExtension,
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# which provides helpers like #as_arch_flags and #as_cmake_arch_flags.
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def universal_archs
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# Amazingly, this order (64, then 32) matters. It shouldn't, but it
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# does. GCC (some versions? some systems?) can blow up if the other
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# order is used.
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# https://superuser.com/questions/740563/gcc-4-8-on-macos-fails-depending-on-arch-order
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[arch_64_bit, arch_32_bit].extend ArchitectureListExtension
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end
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def features
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@features ||= sysctl_n(
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"machdep.cpu.features",
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"machdep.cpu.extfeatures",
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"machdep.cpu.leaf7_features",
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).split(" ").map { |s| s.downcase.to_sym }
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end
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def sse4?
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sysctl_bool("hw.optional.sse4_1")
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end
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def extmodel
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sysctl_int("machdep.cpu.extmodel")
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end
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def aes?
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sysctl_bool("hw.optional.aes")
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end
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def altivec?
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sysctl_bool("hw.optional.altivec")
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end
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def avx?
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sysctl_bool("hw.optional.avx1_0")
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end
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def avx2?
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sysctl_bool("hw.optional.avx2_0")
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end
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def sse3?
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sysctl_bool("hw.optional.sse3")
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end
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def ssse3?
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sysctl_bool("hw.optional.supplementalsse3")
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end
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def sse4_2?
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sysctl_bool("hw.optional.sse4_2")
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end
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private
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def sysctl_bool(key)
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sysctl_int(key) == 1
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end
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def sysctl_int(key)
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sysctl_n(key).to_i
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end
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def sysctl_n(*keys)
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(@properties ||= {}).fetch(keys) do
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@properties[keys] = Utils.popen_read("/usr/sbin/sysctl", "-n", *keys)
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end
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end
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end
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end
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end
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