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