class Benchmark::IPS::Job

def save_held_results
  return unless @held_path
  require "json"
  data = full_report.entries.map { |e|
    {
      'item' => e.label,
      'measured_us' => e.microseconds,
      'iter' => e.iterations,
      'samples' => e.samples,
      'cycles' => e.measurement_cycle
    }
  }
  IO.write(@held_path, JSON.generate(data) << "\n")
end