94     Sample() : fFrames(0), fDuration(0) {}  in Sample()
95     double seconds() const { return std::chrono::duration<double>(fDuration).count(); }  in seconds()
96     double ms() const { return std::chrono::duration<double, std::milli>(fDuration).count(); }  in ms()
101     duration   fDuration;  member
247         sample->fDuration += *startStopTime - start;  in ddl_sample()
310         } while (sample.fDuration < sampleDuration);  in run_ddl_benchmark()
312         cumulativeDuration += sample.fDuration;  in run_ddl_benchmark()
366             sample.fDuration = now - sampleStart;  in run_benchmark()
367         } while (sample.fDuration < sampleDuration);  in run_benchmark()
426                     sample.fDuration += gpuTimer->getTimeElapsed(previousTime);  in run_gpu_time_benchmark()
452             printf("%" PRId64 " ", static_cast<int64_t>(sample.fDuration.count()));  in print_result()
462         accum.fDuration += sample.fDuration;  in print_result()