# File lib/adhearsion/initializer.rb, line 105
    def create_pid_file(file = pid_file)
      if file
        File.open(pid_file, File::CREAT|File::WRONLY) do |file|
          file.write Process.pid
        end
        
        Hooks::TearDown.create_hook do
          File.delete(pid_file) if File.exists?(pid_file)
        end
      end
    end