07660bb7b6
This returns a list of symbols with the various CPU features supported by the active hardware.
54 lines
1.1 KiB
Ruby
54 lines
1.1 KiB
Ruby
module LinuxCPUs
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OPTIMIZATION_FLAGS = {
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:penryn => '-march=core2 -msse4.1',
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:core2 => '-march=core2',
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:core => '-march=prescott',
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}.freeze
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def optimization_flags; OPTIMIZATION_FLAGS; end
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# Linux supports x86 only, and universal archs do not apply
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def arch_32_bit; :i386; end
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def arch_64_bit; :x86_64; end
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def universal_archs; [].extend ArchitectureListExtension; end
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def cpuinfo
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@cpuinfo ||= File.read("/proc/cpuinfo")
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end
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def type
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@type ||= if cpuinfo =~ /Intel|AMD/
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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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cpuinfo[/^cpu family\s*: ([0-9]+)/, 1].to_i
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end
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alias_method :intel_family, :family
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def cores
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cpuinfo.scan(/^processor/).size
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end
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def flags
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@flags ||= cpuinfo[/^flags.*/, 0].split
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end
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# Compatibility with Mac method, which returns lowercase symbols
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# instead of strings
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def features
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@features ||= flags[1..-1].map(&:intern)
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end
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%w[aes altivec avx avx2 lm sse3 ssse3 sse4 sse4_2].each { |flag|
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define_method(flag + "?") { flags.include? flag }
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}
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alias_method :is_64_bit?, :lm?
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def bits
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is_64_bit? ? 64 : 32
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end
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end
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