// Copyright (c) 2015-2018 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include #include #include #include #include #include #include void benchmark::ConsolePrinter::header() { std::cout << "# Benchmark, evals, iterations, total, min, max, median" << std::endl; } void benchmark::ConsolePrinter::result(const State& state) { auto results = state.m_elapsed_results; std::sort(results.begin(), results.end()); double total = state.m_num_iters * std::accumulate(results.begin(), results.end(), 0.0); double front = 0; double back = 0; double median = 0; if (!results.empty()) { front = results.front(); back = results.back(); size_t mid = results.size() / 2; median = results[mid]; if (0 == results.size() % 2) { median = (results[mid] + results[mid + 1]) / 2; } } std::cout << std::setprecision(6); std::cout << state.m_name << ", " << state.m_num_evals << ", " << state.m_num_iters << ", " << total << ", " << front << ", " << back << ", " << median << std::endl; } void benchmark::ConsolePrinter::footer() {} benchmark::PlotlyPrinter::PlotlyPrinter(std::string plotly_url, int64_t width, int64_t height) : m_plotly_url(plotly_url), m_width(width), m_height(height) { } void benchmark::PlotlyPrinter::header() { std::cout << "" << "" << "

" << ""; } benchmark::BenchRunner::BenchmarkMap& benchmark::BenchRunner::benchmarks() { static std::map benchmarks_map; return benchmarks_map; } benchmark::BenchRunner::BenchRunner(std::string name, benchmark::BenchFunction func, uint64_t num_iters_for_one_second) { benchmarks().insert(std::make_pair(name, Bench{func, num_iters_for_one_second})); } void benchmark::BenchRunner::RunAll(Printer& printer, uint64_t num_evals, double scaling, const std::string& filter, bool is_list_only) { if (!std::ratio_less_equal::value) { std::cerr << "WARNING: Clock precision is worse than microsecond - benchmarks may be less accurate!\n"; } #ifdef DEBUG std::cerr << "WARNING: This is a debug build - may result in slower benchmarks.\n"; #endif std::regex reFilter(filter); std::smatch baseMatch; printer.header(); for (const auto& p : benchmarks()) { if (!std::regex_match(p.first, baseMatch, reFilter)) { continue; } uint64_t num_iters = static_cast(p.second.num_iters_for_one_second * scaling); if (0 == num_iters) { num_iters = 1; } State state(p.first, num_evals, num_iters, printer); if (!is_list_only) { p.second.func(state); } printer.result(state); } printer.footer(); } bool benchmark::State::UpdateTimer(const benchmark::time_point current_time) { if (m_start_time != time_point()) { std::chrono::duration diff = current_time - m_start_time; m_elapsed_results.push_back(diff.count() / m_num_iters); if (m_elapsed_results.size() == m_num_evals) { return false; } } m_num_iters_left = m_num_iters - 1; return true; }