Make sure tensorflow_profiler and process_info_tracker are stopped after benchmark method execution #332
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Currently, if benchmark method execution throws exception, the
tensorflow_profiler.stop()andprocess_info_tracker.stop()will not be called. Thus their threads won't be closed andbenchmark.pywill hang forever.This patch uses try/finally clause to make sure that
tensorflow_profiler.stop()andprocess_info_tracker.stop()will be called after benchmark method either finishes or throws exception.