Object
Encapsulates system CPU information
The version of the sys-cpu library.
Returns the host CPU's architecture, or nil if it cannot be determined.
# File lib/windows/sys/cpu.rb, line 75 def self.architecture(host=Socket.gethostname) cs = BASE_CS + "//#{host}/root/cimv2:Win32_Processor='cpu0'" begin wmi = WIN32OLE.connect(cs) rescue WIN32OLERuntimeError => e raise Error, e else self.get_cpu_arch(wmi.Architecture) end end
Returns a hash of arrays that contain the number of seconds that the system spent in user mode, user mode with low priority (nice), system mode, and the idle task, respectively.
# File lib/linux/sys/cpu.rb, line 99 def self.cpu_stats cpu_stat_file = "/proc/stat" hash = {} # Hash needed for multi-cpu systems lines = IO.readlines(cpu_stat_file) lines.each_with_index{ |line, i| array = line.split break unless array[0] =~ /cpu/ # 'cpu' entries always on top # Some machines list a 'cpu' and a 'cpu0'. In this case only # return values for the numbered cpu entry. if lines[i].split[0] == "cpu" && lines[i+1].split[0] =~ /cpu\d/ next end vals = array[1..-1].map{ |e| e = e.to_i / 100 } # 100 jiffies/sec. hash[array[0]] = vals } hash end
Returns a string indicating the type of processor, e.g. GenuineIntel.
# File lib/windows/sys/cpu.rb, line 258 def self.cpu_type(host = Socket.gethostname) cs = BASE_CS + "//#{host}/root/cimv2:Win32_Processor='cpu0'" begin wmi = WIN32OLE.connect(cs) rescue WIN32OLERuntimeError => e raise Error, e else return wmi.Manufacturer end end
# File lib/unix/sys/cpu.rb, line 306 def self.fpu_type raise NoMethodError unless respond_to?(:processor_info, true) pinfo = ProcInfo.new if processor_info(0, pinfo) < 0 if processor_info(1, pinfo) < 0 raise Error, "process_info function failed" end end pinfo[:pi_fputypes].to_s end
Returns an integer indicating the speed (i.e. frequency in Mhz) of cpu_num on host, or the localhost if no host is specified. If cpu_num +1 is greater than the number of cpu's on your system or this call fails for any other reason, a Error is raised.
# File lib/windows/sys/cpu.rb, line 91 def self.freq(cpu_num = 0, host = Socket.gethostname) cs = BASE_CS + "//#{host}/root/cimv2:Win32_Processor='cpu#{cpu_num}'" begin wmi = WIN32OLE.connect(cs) rescue WIN32OLERuntimeError => e raise Error, e else return wmi.CurrentClockSpeed end end
Returns a 3 element Array corresponding to the 1, 5 and 15 minute load average for the system.
# File lib/linux/sys/cpu.rb, line 90 def self.load_avg load_avg_file = "/proc/loadavg" IO.readlines(load_avg_file).first.split[0..2].map{ |e| e.to_f } end
# File lib/unix/sys/cpu.rb, line 170 def self.machine if respond_to?(:sysctl, true) buf = 0.chr * 32 mib = FFI::MemoryPointer.new(:int, 2) size = FFI::MemoryPointer.new(:long, 1) mib.write_array_of_int([CTL_HW, HW_MACHINE]) size.write_int(buf.size) if sysctl(mib, 2, buf, size, nil, 0) < 0 raise Error, "sysctl function failed" end buf.strip else buf = 0.chr * 257 if sysinfo(SI_MACHINE, buf, buf.size) < 0 raise Error, "sysinfo function failed" end buf.strip end end
Returns a string indicating the cpu model, e.g. Intel Pentium 4.
# File lib/windows/sys/cpu.rb, line 123 def self.model(host = Socket.gethostname) cs = BASE_CS + "//#{host}/root/cimv2:Win32_Processor='cpu0'" begin wmi = WIN32OLE.connect(cs) rescue WIN32OLERuntimeError => e raise Error, e else return wmi.Name end end
Returns an integer indicating the number of cpu's on the system.
# File lib/windows/sys/cpu.rb, line 138 def self.num_cpu(host = Socket.gethostname) cs = BASE_CS + "//#{host}/root/cimv2:Win32_ComputerSystem='#{host}'" begin wmi = WIN32OLE.connect(cs) rescue WIN32OLERuntimeError => e raise Error, e else return wmi.NumberOfProcessors end end
In block form, yields a CPUStruct for each CPU on the system. In non-block form, returns an Array of CPUStruct's.
The exact members of the struct vary on Linux systems.
# File lib/linux/sys/cpu.rb, line 58 def self.processors array = [] $cpu_array.each{ |hash| struct = CPUStruct.new struct.members.each{ |m| struct.send("#{m}=", hash[m]) } if block_given? yield struct else array << struct end } array unless block_given? end
# File lib/unix/sys/cpu.rb, line 320 def self.state(num = 0) raise NoMethodError unless respond_to?(:processor_info, true) pinfo = ProcInfo.new if processor_info(num, pinfo) < 0 raise Error, "process_info function failed" end case pinfo[:pi_state].to_i when P_ONLINE "online" when P_OFFLINE "offline" when P_POWEROFF "poweroff" when P_FAULTED "faulted" when P_NOINTR "nointr" when P_SPARE "spare" else "unknown" end end
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