ceph/src/boost/libs/histogram/benchmark/histogram_filling_root.cpp

   1 // Copyright 2015-2019 Hans Dembinski
   2 //
   3 // Distributed under the Boost Software License, Version 1.0.
   4 // (See accompanying file LICENSE_1_0.txt
   5 // or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <TH1I.h>
   8 #include <TH2I.h>
   9 #include <TH3I.h>
  10 #include <THn.h>
  11 #include <benchmark/benchmark.h>
  12 #include "generator.hpp"
  13
  14 #include <cassert>
  15 struct assert_check {
  16   assert_check() {
  17     assert(false); // don't run with asserts enabled
  18   }
  19 } _;
  20
  21 template <class Distribution>
  22 static void fill_1d(benchmark::State& state) {
  23   TH1I h("", "", 100, 0, 1);
  24   generator<Distribution> gen;
  25   for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen()));
  26   state.SetItemsProcessed(state.iterations());
  27 }
  28
  29 template <class Distribution>
  30 static void fill_2d(benchmark::State& state) {
  31   TH2I h("", "", 100, 0, 1, 100, 0, 1);
  32   generator<Distribution> gen;
  33   for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen(), gen()));
  34   state.SetItemsProcessed(state.iterations() * 2);
  35 }
  36
  37 template <class Distribution>
  38 static void fill_3d(benchmark::State& state) {
  39   TH3I h("", "", 100, 0, 1, 100, 0, 1, 100, 0, 1);
  40   generator<Distribution> gen;
  41   for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen(), gen(), gen()));
  42   state.SetItemsProcessed(state.iterations() * 3);
  43 }
  44
  45 template <class Distribution>
  46 static void fill_6d(benchmark::State& state) {
  47   int bin[] = {10, 10, 10, 10, 10, 10};
  48   double min[] = {0, 0, 0, 0, 0, 0};
  49   double max[] = {1, 1, 1, 1, 1, 1};
  50   THnI h("", "", 6, bin, min, max);
  51   generator<Distribution> gen;
  52   for (auto _ : state) {
  53     const double buf[6] = {gen(), gen(), gen(), gen(), gen(), gen()};
  54     benchmark::DoNotOptimize(h.Fill(buf));
  55   }
  56   state.SetItemsProcessed(state.iterations() * 6);
  57 }
  58
  59 BENCHMARK_TEMPLATE(fill_1d, uniform);
  60 BENCHMARK_TEMPLATE(fill_2d, uniform);
  61 BENCHMARK_TEMPLATE(fill_3d, uniform);
  62 BENCHMARK_TEMPLATE(fill_6d, uniform);
  63
  64 BENCHMARK_TEMPLATE(fill_1d, normal);
  65 BENCHMARK_TEMPLATE(fill_2d, normal);
  66 BENCHMARK_TEMPLATE(fill_3d, normal);
  67 BENCHMARK_TEMPLATE(fill_6d, normal);