<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def cur_iter_done(self):
 """Checks if all iterations have completed. TODO(rliaw):
 also check that `t.iterations == self._r`"""

        return all(
            self._get_result_time(result) >= self._cumul_r
            for result in self._live_trials.values())