time = {}

function profile(func, name)
  return function()
    local start = os.clock()
    local result = {func(...)}
    local end_ = os.clock()
    local elasped = end_ - start

    time[name] = time[name] and time[name] + elasped or elasped

    return unpack(result)
  end
end

function func(n)
  print("output from func")
  for i = 1, n, 1 do
    -- do nothing
  end
end

func = profile(func, "func")

func(9999999)

print(time.func)