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hardware.rb
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hardware.rb
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# frozen_string_literal: true
require "utils/popen"
module Hardware
class CPU
INTEL_32BIT_ARCHS = [:i386].freeze
INTEL_64BIT_ARCHS = [:x86_64].freeze
PPC_32BIT_ARCHS = [:ppc, :ppc32, :ppc7400, :ppc7450, :ppc970].freeze
PPC_64BIT_ARCHS = [:ppc64, :ppc64le, :ppc970].freeze
class << self
def optimization_flags
@optimization_flags ||= {
native: arch_flag("native"),
nehalem: "-march=nehalem",
core2: "-march=core2",
core: "-march=prescott",
arm_vortex_tempest: "",
armv6: "-march=armv6",
armv8: "-march=armv8-a",
ppc64: "-mcpu=powerpc64",
ppc64le: "-mcpu=powerpc64le",
}.freeze
end
alias generic_optimization_flags optimization_flags
def arch_32_bit
if arm?
:arm
elsif intel?
:i386
elsif ppc32?
:ppc32
else
:dunno
end
end
def arch_64_bit
if arm?
:arm64
elsif intel?
:x86_64
elsif ppc64le?
:ppc64le
elsif ppc64?
:ppc64
else
:dunno
end
end
def arch
case bits
when 32
arch_32_bit
when 64
arch_64_bit
else
:dunno
end
end
def universal_archs
[arch].extend ArchitectureListExtension
end
def type
case RUBY_PLATFORM
when /x86_64/, /i\d86/ then :intel
when /arm/, /aarch64/ then :arm
when /ppc|powerpc/ then :ppc
else :dunno
end
end
def family
:dunno
end
def cores
return @cores if @cores
@cores = Utils.popen_read("getconf", "_NPROCESSORS_ONLN").chomp.to_i
@cores = 1 unless $CHILD_STATUS.success?
@cores
end
def bits
@bits ||= case RUBY_PLATFORM
when /x86_64/, /ppc64|powerpc64/, /aarch64|arm64/ then 64
when /i\d86/, /ppc/, /arm/ then 32
end
end
def sse4?
RUBY_PLATFORM.to_s.include?("x86_64")
end
def is_32_bit?
bits == 32
end
def is_64_bit?
bits == 64
end
def intel?
type == :intel
end
def ppc?
type == :ppc
end
def ppc32?
ppc? && is_32_bit?
end
def ppc64le?
ppc? && is_64_bit? && little_endian?
end
def ppc64?
ppc? && is_64_bit? && big_endian?
end
def arm?
type == :arm
end
def little_endian?
!big_endian?
end
def big_endian?
[1].pack("I") == [1].pack("N")
end
def features
[]
end
def feature?(name)
features.include?(name)
end
def arch_flag(arch)
return "-mcpu=#{arch}" if ppc?
"-march=#{arch}"
end
end
end
class << self
def cores_as_words
case Hardware::CPU.cores
when 1 then "single"
when 2 then "dual"
when 4 then "quad"
when 6 then "hexa"
when 8 then "octa"
when 12 then "dodeca"
else
Hardware::CPU.cores
end
end
def oldest_cpu(_version = nil)
if Hardware::CPU.intel?
if Hardware::CPU.is_64_bit?
:core2
else
:core
end
elsif Hardware::CPU.arm?
if Hardware::CPU.is_64_bit?
:armv8
else
:armv6
end
elsif Hardware::CPU.ppc? && Hardware::CPU.is_64_bit?
if Hardware::CPU.little_endian?
:ppc64le
else
:ppc64
end
else
Hardware::CPU.family
end
end
alias generic_oldest_cpu oldest_cpu
end
end
require "extend/os/hardware"