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Diffstat (limited to '3rdparty/benchmark/src/reporter.cc')
-rw-r--r-- | 3rdparty/benchmark/src/reporter.cc | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/3rdparty/benchmark/src/reporter.cc b/3rdparty/benchmark/src/reporter.cc new file mode 100644 index 00000000000..4b47e3d556c --- /dev/null +++ b/3rdparty/benchmark/src/reporter.cc @@ -0,0 +1,86 @@ +// 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 <cstdlib> +#include <vector> + +#include "check.h" +#include "stat.h" + +namespace benchmark { + +void BenchmarkReporter::ComputeStats( + const std::vector<Run>& reports, + Run* mean_data, Run* stddev_data) { + CHECK(reports.size() >= 2) << "Cannot compute stats for less than 2 reports"; + // Accumulators. + Stat1_d real_accumulated_time_stat; + Stat1_d cpu_accumulated_time_stat; + Stat1_d bytes_per_second_stat; + Stat1_d items_per_second_stat; + // All repetitions should be run with the same number of iterations so we + // can take this information from the first benchmark. + int64_t const run_iterations = reports.front().iterations; + + // Populate the accumulators. + for (Run const& run : reports) { + CHECK_EQ(reports[0].benchmark_name, run.benchmark_name); + CHECK_EQ(run_iterations, run.iterations); + real_accumulated_time_stat += + Stat1_d(run.real_accumulated_time/run.iterations, run.iterations); + cpu_accumulated_time_stat += + Stat1_d(run.cpu_accumulated_time/run.iterations, run.iterations); + items_per_second_stat += Stat1_d(run.items_per_second, run.iterations); + bytes_per_second_stat += Stat1_d(run.bytes_per_second, run.iterations); + } + + // Get the data from the accumulator to BenchmarkReporter::Run's. + mean_data->benchmark_name = reports[0].benchmark_name + "_mean"; + mean_data->iterations = run_iterations; + mean_data->real_accumulated_time = real_accumulated_time_stat.Mean() * + run_iterations; + mean_data->cpu_accumulated_time = cpu_accumulated_time_stat.Mean() * + run_iterations; + mean_data->bytes_per_second = bytes_per_second_stat.Mean(); + mean_data->items_per_second = items_per_second_stat.Mean(); + + // Only add label to mean/stddev if it is same for all runs + mean_data->report_label = reports[0].report_label; + for (std::size_t i = 1; i < reports.size(); i++) { + if (reports[i].report_label != reports[0].report_label) { + mean_data->report_label = ""; + break; + } + } + + stddev_data->benchmark_name = reports[0].benchmark_name + "_stddev"; + stddev_data->report_label = mean_data->report_label; + stddev_data->iterations = 0; + stddev_data->real_accumulated_time = + real_accumulated_time_stat.StdDev(); + stddev_data->cpu_accumulated_time = + cpu_accumulated_time_stat.StdDev(); + stddev_data->bytes_per_second = bytes_per_second_stat.StdDev(); + stddev_data->items_per_second = items_per_second_stat.StdDev(); +} + +void BenchmarkReporter::Finalize() { +} + +BenchmarkReporter::~BenchmarkReporter() { +} + +} // end namespace benchmark |