module MeMeasure

# File lib/memeasure/measure.rb, line 4
def run(options = {gc: :enable})
  if options[:gc] == :disable
    GC.disable
  elsif options[:gc] == :enable
    GC.start
  end

  memory_before = `ps -o rss= -p #{Process.pid}`.to_i / 1024
  gc_stat_before = GC.stat

  time = ::Benchmark.measure do
    yield
  end

  gc_stat_after = GC.stat
  GC.start if options[:gc] == :enable

  memory_after = `ps -o rss= -p #{Process.pid}`.to_i / 1024

  puts({
    RUBY_VERSION => {
      gc: options[:gc],
      time: time.total.round(2),
      gc_count: gc_stat_after[:count].to_i - gc_stat_before[:count].to_i,
      memory: "%d MB" % (memory_after - memory_before)
    }
  }.to_json)
end