struct Hardware::PID

• Hardware::PID
• Struct
• Value
• Object

Overview

All informations related to the Processes running on your sytem, defined by Process IDentifiers.

pid = Hardware::PID.new           # Default is Process.pid
app = Hardware::PID.new "firefox" # Take the first matching PID

Defined in:

Constructors

• .new(number : Int64 = Process.pid)

  Creates a new Hardware::PID.

• .new(executable : String)

  Creates a new Hardware::PID by finding the executable's pid.

Class Method Summary

• .each(& : PID -> ) : Nil

  Yields a Hardware::PID for each PID present on the system.

• .get_pids(executable : String, & : Int64 -> )

  Yield each pids corresponding to a given executable name.

Instance Method Summary

• #cmdline : String

  Returns /proc/``#pid``/cmdline.

• #command : String

  Returns a String representation of /proc/``#pid``/cmdline.

• #exe : String

  Returns /proc/``#pid``/exe if readable.

• #exists? : Bool
• #memory : Int32

  Returns the actual memory used by the process.

• #name : String

  Returns the PID name based on #exe or #cmdline.

• #net : Net

  Returns Hardware::Net for #pid

• #number : Int64

  Pid number

• #stat(cpu : CPU | Nil = CPU.new) : Stat

  Returns a parsed /proc/``#pid``/stat.

• #statm : Array(Int32)

  Returns a parsed /proc/``#pid``/statm.

• #status : Status

  Returns a parsed /proc/``#pid``/status.

Constructor Detail

Class Method Detail

Instance Method Detail

pid_stat = Hardware::PID.new.stat
loop do
  sleep 1
  p pid_stat.cpu_usage! # => 1.5
end