108 lines
2.2 KiB
Ruby
108 lines
2.2 KiB
Ruby
module MacCPUs
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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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:g3 => '-mcpu=750',
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:g4 => '-mcpu=7400',
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:g4e => '-mcpu=7450',
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:g5 => '-mcpu=970'
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}.freeze
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def optimization_flags; OPTIMIZATION_FLAGS; end
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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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@type ||= `/usr/sbin/sysctl -n hw.cputype`.to_i
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case @type
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when 7
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:intel
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when 18
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:ppc
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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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if type == :intel
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@intel_family ||= `/usr/sbin/sysctl -n hw.cpufamily`.to_i
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case @intel_family
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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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else
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:dunno
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end
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elsif type == :ppc
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@ppc_family ||= `/usr/sbin/sysctl -n hw.cpusubtype`.to_i
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case @ppc_family
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when 9
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:g3 # PowerPC 750
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when 10
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:g4 # PowerPC 7400
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when 11
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:g4e # PowerPC 7450
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when 100
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:g5 # PowerPC 970
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else
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:dunno
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end
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end
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end
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def cores
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@cores ||= `/usr/sbin/sysctl -n hw.ncpu`.to_i
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end
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def bits
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return @bits if defined? @bits
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is_64_bit = sysctl_bool("hw.cpu64bit_capable")
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@bits ||= is_64_bit ? 64 : 32
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end
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def altivec?
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@altivec ||= sysctl_bool('hw.optional.altivec')
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end
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def avx?
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@avx ||= sysctl_bool('hw.optional.avx1_0')
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end
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def sse3?
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@sse3 ||= sysctl_bool('hw.optional.sse3')
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end
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def sse4?
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@sse4 ||= sysctl_bool('hw.optional.sse4_1')
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end
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def sse4_2?
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@sse4 ||= sysctl_bool('hw.optional.sse4_2')
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end
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protected
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def sysctl_bool(property)
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result = nil
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IO.popen("/usr/sbin/sysctl -n #{property} 2>/dev/null") do |f|
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result = f.gets.to_i # should be 0 or 1
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end
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$?.success? && result == 1 # sysctl call succeded and printed 1
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end
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end
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