mirror of
https://github.com/google/benchmark.git
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116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "benchmark/reporter.h"
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#include <cstdint>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "check.h"
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#include "colorprint.h"
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#include "string_util.h"
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#include "walltime.h"
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namespace benchmark {
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bool ConsoleReporter::ReportContext(const Context& context) {
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name_field_width_ = context.name_field_width;
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std::cerr << "Run on (" << context.num_cpus << " X " << context.mhz_per_cpu
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<< " MHz CPU " << ((context.num_cpus > 1) ? "s" : "") << ")\n";
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std::cerr << LocalDateTimeString() << "\n";
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if (context.cpu_scaling_enabled) {
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std::cerr << "***WARNING*** CPU scaling is enabled, the benchmark "
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"real time measurements may be noisy and will incure extra "
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"overhead.\n";
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}
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#ifndef NDEBUG
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std::cerr << "***WARNING*** Library was built as DEBUG. Timings may be "
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"affected.\n";
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#endif
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int output_width = fprintf(stdout, "%-*s %10s %10s %10s\n",
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static_cast<int>(name_field_width_), "Benchmark",
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"Time(ns)", "CPU(ns)", "Iterations");
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std::cout << std::string(output_width - 1, '-') << "\n";
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return true;
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}
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void ConsoleReporter::ReportRuns(const std::vector<Run>& reports) {
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if (reports.empty()) {
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return;
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}
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for (Run const& run : reports) {
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CHECK_EQ(reports[0].benchmark_name, run.benchmark_name);
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PrintRunData(run);
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}
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if (reports.size() < 2) {
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// We don't report aggregated data if there was a single run.
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return;
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}
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Run mean_data;
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Run stddev_data;
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BenchmarkReporter::ComputeStats(reports, &mean_data, &stddev_data);
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// Output using PrintRun.
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PrintRunData(mean_data);
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PrintRunData(stddev_data);
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}
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void ConsoleReporter::PrintRunData(const Run& result) {
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// Format bytes per second
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std::string rate;
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if (result.bytes_per_second > 0) {
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rate = StrCat(" ", HumanReadableNumber(result.bytes_per_second), "B/s");
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}
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// Format items per second
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std::string items;
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if (result.items_per_second > 0) {
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items = StrCat(" ", HumanReadableNumber(result.items_per_second),
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" items/s");
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}
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double const multiplier = 1e9; // nano second multiplier
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ColorPrintf(COLOR_GREEN, "%-*s ",
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name_field_width_, result.benchmark_name.c_str());
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if (result.iterations == 0) {
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ColorPrintf(COLOR_YELLOW, "%10.0f %10.0f ",
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result.real_accumulated_time * multiplier,
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result.cpu_accumulated_time * multiplier);
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} else {
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ColorPrintf(COLOR_YELLOW, "%10.0f %10.0f ",
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(result.real_accumulated_time * multiplier) /
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(static_cast<double>(result.iterations)),
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(result.cpu_accumulated_time * multiplier) /
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(static_cast<double>(result.iterations)));
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}
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ColorPrintf(COLOR_CYAN, "%10lld", result.iterations);
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ColorPrintf(COLOR_DEFAULT, "%*s %*s %s\n",
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13, rate.c_str(),
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18, items.c_str(),
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result.report_label.c_str());
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}
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} // end namespace benchmark
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