1 /* 2 * Copyright (c) 2018 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <stdio.h> 12 #include <algorithm> 13 #include <cstdlib> 14 15 #include "test/bench.h" 16 #include "vpx_ports/vpx_timer.h" 17 RunNTimes(int n)18void AbstractBench::RunNTimes(int n) { 19 for (int r = 0; r < VPX_BENCH_ROBUST_ITER; r++) { 20 vpx_usec_timer timer; 21 vpx_usec_timer_start(&timer); 22 for (int j = 0; j < n; ++j) { 23 Run(); 24 } 25 vpx_usec_timer_mark(&timer); 26 times_[r] = static_cast<int>(vpx_usec_timer_elapsed(&timer)); 27 } 28 } 29 PrintMedian(const char * title)30void AbstractBench::PrintMedian(const char *title) { 31 std::sort(times_, times_ + VPX_BENCH_ROBUST_ITER); 32 const int med = times_[VPX_BENCH_ROBUST_ITER >> 1]; 33 int sad = 0; 34 for (int t = 0; t < VPX_BENCH_ROBUST_ITER; t++) { 35 sad += abs(times_[t] - med); 36 } 37 printf("[%10s] %s %.1f ms ( ±%.1f ms )\n", "BENCH ", title, med / 1000.0, 38 sad / (VPX_BENCH_ROBUST_ITER * 1000.0)); 39 } 40