Method: Main::Daemon#cmd_stop

Defined in:

lib/main/daemon.rb

#cmd_stop ⇒ Object

# File 'lib/main/daemon.rb', line 171

def cmd_stop
  pid = Integer(IO.read(@pid_file)) rescue nil

  if pid
    alive = true

    %w( QUIT TERM ).each do |signal|
      begin
        Process.kill(signal, pid)
      rescue Errno::ESRCH
        nil
      end

      42.times do
        begin
          Process.kill(0, pid)
          sleep(rand)
        rescue Errno::ESRCH
          alive = false
          puts(pid)
          exit(0)
        end
      end
    end

    if alive
      begin
        Process.kill(-9, pid)
        sleep(rand)
      rescue Errno::ESRCH
        nil
      end

      begin
        Process.kill(0, pid)
      rescue Errno::ESRCH
        puts(pid)
        exit(0)
      end
    end
  end
  
  exit(1)
ensure
  unless alive?
    begin
      FileUtils.rm_f(@pid_file) rescue nil
    rescue Object
    end
  end
end