Class: ProbeListener

Inherits:
Object
  • Object
show all
Defined in:
lib/dtracer/probe_listener.rb

Instance Method Summary collapse

Constructor Details

#initialize(name, is_hash) ⇒ ProbeListener

Returns a new instance of ProbeListener.



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# File 'lib/dtracer/probe_listener.rb', line 5

def initialize(name, is_hash)
  @name = name
  @probe_string = probe_string(name)
  @is_hash = is_hash
end

Instance Method Details

#listen ⇒ Object 



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# File 'lib/dtracer/probe_listener.rb', line 11

def listen
  write_probe
  cmd = "sudo dtrace -s #{trace_file_path}"

  IO.popen(cmd) do |stdout|
    stdout.each do |line|

      if @is_hash
        value = try_parse(line)
        next unless value
      else
        value = line.strip
        next if value.empty?
      end

      puts "\n#{@name.capitalize}----------------------------------------------"
      yield(value)
    end
  end

  clean_up
end