| // Copyright 2015 Google Inc. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "benchmark/reporter.h" |
| |
| #include <cstdint> |
| #include <iostream> |
| #include <string> |
| #include <vector> |
| |
| #include "string_util.h" |
| #include "walltime.h" |
| |
| // File format reference: http://edoceo.com/utilitas/csv-file-format. |
| |
| namespace benchmark { |
| |
| bool CSVReporter::ReportContext(const Context& context) { |
| std::cerr << "Run on (" << context.num_cpus << " X " << context.mhz_per_cpu |
| << " MHz CPU " << ((context.num_cpus > 1) ? "s" : "") << ")\n"; |
| |
| std::cerr << LocalDateTimeString() << "\n"; |
| |
| if (context.cpu_scaling_enabled) { |
| std::cerr << "***WARNING*** CPU scaling is enabled, the benchmark " |
| "real time measurements may be noisy and will incure extra " |
| "overhead.\n"; |
| } |
| |
| #ifndef NDEBUG |
| std::cerr << "***WARNING*** Library was built as DEBUG. Timings may be " |
| "affected.\n"; |
| #endif |
| std::cout << "name,iterations,real_time,cpu_time,bytes_per_second," |
| "items_per_second,label\n"; |
| return true; |
| } |
| |
| void CSVReporter::ReportRuns(std::vector<Run> const& reports) { |
| if (reports.empty()) { |
| return; |
| } |
| |
| std::vector<Run> reports_cp = reports; |
| if (reports.size() >= 2) { |
| Run mean_data; |
| Run stddev_data; |
| BenchmarkReporter::ComputeStats(reports, &mean_data, &stddev_data); |
| reports_cp.push_back(mean_data); |
| reports_cp.push_back(stddev_data); |
| } |
| for (auto it = reports_cp.begin(); it != reports_cp.end(); ++it) { |
| PrintRunData(*it); |
| } |
| } |
| |
| void CSVReporter::PrintRunData(Run const& run) { |
| double const multiplier = 1e9; // nano second multiplier |
| double cpu_time = run.cpu_accumulated_time * multiplier; |
| double real_time = run.real_accumulated_time * multiplier; |
| if (run.iterations != 0) { |
| real_time = real_time / static_cast<double>(run.iterations); |
| cpu_time = cpu_time / static_cast<double>(run.iterations); |
| } |
| |
| // Field with embedded double-quote characters must be doubled and the field |
| // delimited with double-quotes. |
| std::string name = run.benchmark_name; |
| ReplaceAll(&name, "\"", "\"\""); |
| std::cout << "\"" << name << "\","; |
| |
| std::cout << run.iterations << ","; |
| std::cout << real_time << ","; |
| std::cout << cpu_time << ","; |
| |
| if (run.bytes_per_second > 0.0) { |
| std::cout << run.bytes_per_second; |
| } |
| std::cout << ","; |
| if (run.items_per_second > 0.0) { |
| std::cout << run.items_per_second; |
| } |
| std::cout << ","; |
| if (!run.report_label.empty()) { |
| // Field with embedded double-quote characters must be doubled and the field |
| // delimited with double-quotes. |
| std::string label = run.report_label; |
| ReplaceAll(&label, "\"", "\"\""); |
| std::cout << "\"" << label << "\""; |
| } |
| std::cout << '\n'; |
| } |
| |
| } // end namespace benchmark |