ref: 4770f851a893123b76b204dad85a7a09dfb1b6ed
dir: /test/bench.cc/
/*
* Copyright (c) 2018 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdio.h>
#include <algorithm>
#include "test/bench.h"
#include "vpx_ports/vpx_timer.h"
void AbstractBench::RunNTimes(int n) {
for (int r = 0; r < VPX_BENCH_ROBUST_ITER; r++) {
vpx_usec_timer timer;
vpx_usec_timer_start(&timer);
for (int j = 0; j < n; ++j) {
Run();
}
vpx_usec_timer_mark(&timer);
times_[r] = static_cast<int>(vpx_usec_timer_elapsed(&timer));
}
}
void AbstractBench::PrintMedian(const char *title) {
std::sort(times_, times_ + VPX_BENCH_ROBUST_ITER);
const int med = times_[VPX_BENCH_ROBUST_ITER >> 1];
int sad = 0;
for (int t = 0; t < VPX_BENCH_ROBUST_ITER; t++) {
sad += abs(times_[t] - med);
}
printf("[%10s] %s %.1f ms ( ±%.1f ms )\n", "BENCH ", title, med / 1000.0,
sad / (VPX_BENCH_ROBUST_ITER * 1000.0));
}