module Celluloid::Internals::CPUCounter
Public Class Methods
cores()
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# File lib/celluloid/internals/cpu_counter.rb, line 5 def cores @cores ||= count_cores end
Private Class Methods
count_cores()
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# File lib/celluloid/internals/cpu_counter.rb, line 11 def count_cores from_result(from_env || from_sysdev || from_java || from_proc || from_win32ole || from_sysctl) || 1 end
from_env()
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# File lib/celluloid/internals/cpu_counter.rb, line 15 def from_env result = ENV["NUMBER_OF_PROCESSORS"] result if result && !result.empty? rescue end
from_java()
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# File lib/celluloid/internals/cpu_counter.rb, line 32 def from_java Java::Java.lang.Runtime.getRuntime.availableProcessors if defined? Java::Java rescue end
from_proc()
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# File lib/celluloid/internals/cpu_counter.rb, line 37 def from_proc File.read("/proc/cpuinfo").scan(/^processor\s*:/).size if File.exist?("/proc/cpuinfo") rescue end
from_result(result)
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# File lib/celluloid/internals/cpu_counter.rb, line 54 def from_result(result) if result i = Integer(result.to_s[/\d+/], 10) return i if i > 0 end rescue end
from_sysctl()
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# File lib/celluloid/internals/cpu_counter.rb, line 49 def from_sysctl Integer %x`sysctl -n hw.ncpu 2>/dev/null` rescue end
from_sysdev()
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# File lib/celluloid/internals/cpu_counter.rb, line 21 def from_sysdev ::IO.read("/sys/devices/system/cpu/present").split("-").last.to_i + 1 rescue Errno::ENOENT begin result = Dir["/sys/devices/system/cpu/cpu*"].count { |n| n =~ /cpu\d+/ } result unless result.zero? rescue end rescue end
from_win32ole()
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# File lib/celluloid/internals/cpu_counter.rb, line 42 def from_win32ole require "win32ole" WIN32OLE.connect("winmgmts://").ExecQuery("select * from Win32_ComputerSystem").NumberOfProcessors rescue LoadError rescue end