alive?

in lib/pygments/popen.rb [86:94]

• 8 lines of code
• 6 McCabe index (conditional complexity)

    def alive?
      return true if @pid && Process.kill(0, @pid)
      false
    rescue Errno::ENOENT, Errno::ESRCH
      false
    rescue Errno::EPERM
      raise MentosError, "EPERM checking if child process is alive."
    end