Parent

Namespace

Class/Module Index [+]

Quicksearch

Sys::CPU

Encapsulates system CPU information


Public Class Methods

architecture(host=Socket.gethostname) click to toggle source

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
cpu_stats() click to toggle source

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
cpu_type(host = Socket.gethostname) click to toggle source

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
fpu_type() click to toggle source
# 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
freq(cpu_num = 0, host = Socket.gethostname) click to toggle source

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
load_avg(cpu_num = 0, host = Socket.gethostname) click to toggle source

Returns the load capacity for cpu_num on host, or the localhost if no host is specified, averaged to the last second. Processor loading refers to the total computing burden for each processor at one time.

Note that this attribute is actually the LoadPercentage. I may use one of the Win32_Perf* classes in the future.

# File lib/windows/sys/cpu.rb, line 110
def self.load_avg(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.LoadPercentage
  end
end
machine() click to toggle source
# 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
model(host = Socket.gethostname) click to toggle source

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
num_cpu(host = Socket.gethostname) click to toggle source

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
processors(host = Socket.gethostname) click to toggle source

Returns a CPUStruct for each CPU on host, or the localhost if no host is specified. A CPUStruct contains the following members:

  • address_width

  • architecture

  • availability

  • caption

  • config_manager_error_code

  • config_manager_user_config

  • cpu_status

  • creation_class_name

  • freq

  • voltage

  • data_width

  • description

  • device_id

  • error_cleared?

  • error_description

  • ext_clock

  • family

  • install_date

  • l2_cache_size

  • l2_cache_speed

  • last_error_code

  • level

  • load_avg

  • manufacturer

  • max_clock_speed

  • name

  • other_family_description

  • pnp_device_id

  • power_management_supported?

  • power_management_capabilities

  • processor_id

  • processor_type

  • revision

  • role

  • socket_designation

  • status

  • status_info

  • stepping

  • system_creation_class_name

  • system_name

  • unique_id

  • upgrade_method

  • version

  • voltage_caps

Note that not all of these members will necessarily be defined.

# File lib/windows/sys/cpu.rb, line 199
def self.processors(host = Socket.gethostname) # :yields: CPUStruct
  begin
    wmi = WIN32OLE.connect(BASE_CS + "//#{host}/root/cimv2")
  rescue WIN32OLERuntimeError => e
    raise Error, e
  else
    wmi.InstancesOf("Win32_Processor").each{ |cpu|
      yield CPUStruct.new(
        cpu.AddressWidth,
        self.get_cpu_arch(cpu.Architecture),
        self.get_availability(cpu.Availability),
        cpu.Caption,
        self.get_cmec(cpu.ConfigManagerErrorCode),
        cpu.ConfigManagerUserConfig,
        get_status(cpu.CpuStatus),
        cpu.CreationClassName,
        cpu.CurrentClockSpeed,
        cpu.CurrentVoltage,
        cpu.DataWidth,
        cpu.Description,
        cpu.DeviceId,
        cpu.ErrorCleared,
        cpu.ErrorDescription,
        cpu.ExtClock,
        self.get_family(cpu.Family),
        cpu.InstallDate,
        cpu.L2CacheSize,
        cpu.L2CacheSpeed,
        cpu.LastErrorCode,
        cpu.Level,
        cpu.LoadPercentage,
        cpu.Manufacturer,
        cpu.MaxClockSpeed,
        cpu.Name,
        cpu.OtherFamilyDescription,
        cpu.PNPDeviceID,
        cpu.PowerManagementSupported,
        cpu.PowerManagementCapabilities,
        cpu.ProcessorId,
        self.get_processor_type(cpu.ProcessorType),
        cpu.Revision,
        cpu.Role,
        cpu.SocketDesignation,
        cpu.Status,
        cpu.StatusInfo,
        cpu.Stepping,
        cpu.SystemCreationClassName,
        cpu.SystemName,
        cpu.UniqueId,
        self.get_upgrade_method(cpu.UpgradeMethod),
        cpu.Version,
        self.get_voltage_caps(cpu.VoltageCaps)
      )
    }
  end
end
state(num = 0) click to toggle source
# 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

[Validate]

Generated with the Darkfish Rdoc Generator 2.