Module: Hardware Private

Defined in:
hardware.rb,
extend/os/mac/hardware/cpu.rb

Overview

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Helper module for querying hardware information.

Defined Under Namespace

Classes: CPU

Class Method Summary collapse

Class Method Details

.cores_as_words ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'hardware.rb', line 207

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 10 then "deca"
  when 12 then "dodeca"
  else
    Hardware::CPU.cores.to_s
  end
end

.oldest_cpu(_version = nil) ⇒ Symbol

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'hardware.rb', line 222

def oldest_cpu(_version = nil)
  if Hardware::CPU.intel?
    if Hardware::CPU.is_64_bit?
      Hardware::CPU::INTEL_64BIT_OLDEST_CPU
    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

.rustflags_target_cpu(arch) ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns a Rust flag to set the target CPU if necessary. Defaults to nil.

Parameters:

Returns:



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# File 'hardware.rb', line 249

def rustflags_target_cpu(arch)
  # Rust already defaults to the oldest supported cpu for each target-triplet
  # so it's safe to ignore generic archs such as :armv6 here.
  # Rust defaults to apple-m1 since Rust 1.71 for aarch64-apple-darwin.
  @target_cpu ||= T.let(case arch
  when :core
    :prescott
  when :native, :ivybridge, :sandybridge, :westmere, :nehalem, :core2
    arch
  end, T.nilable(Symbol))
  return if @target_cpu.blank?

  "--codegen target-cpu=#{@target_cpu}"
end