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// Copyright 2015-2018 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <benchmark/benchmark.h>
#include <boost/histogram/accumulators/count.hpp>
#include <boost/histogram/axis/regular.hpp>
#include <boost/histogram/histogram.hpp>
#include <boost/histogram/make_histogram.hpp>
#include <chrono>
#include <functional>
#include <mutex>
#include <numeric>
#include <random>
#include <thread>
#include <vector>
#include "../test/throw_exception.hpp"
#include <cassert>
struct assert_check {
assert_check() {
assert(false); // don't run with asserts enabled
}
} _;
using namespace boost::histogram;
using namespace std::chrono_literals;
using DS = dense_storage<unsigned>;
using DSTS = dense_storage<accumulators::count<unsigned, true>>;
static void NoThreads(benchmark::State& state) {
std::default_random_engine gen(1);
std::uniform_real_distribution<> dis(0, 1);
const unsigned nbins = state.range(0);
auto hist = make_histogram_with(DS(), axis::regular<>(nbins, 0, 1));
for (auto _ : state) {
// simulate some work
for (volatile unsigned n = 0; n < state.range(1); ++n)
;
hist(dis(gen));
}
}
std::mutex init;
static auto hist = make_histogram_with(DSTS(), axis::regular<>());
static void AtomicStorage(benchmark::State& state) {
init.lock();
if (state.thread_index() == 0) {
const unsigned nbins = state.range(0);
hist = make_histogram_with(DSTS(), axis::regular<>(nbins, 0, 1));
}
init.unlock();
std::default_random_engine gen(state.thread_index());
std::uniform_real_distribution<> dis(0, 1);
for (auto _ : state) {
// simulate some work
for (volatile unsigned n = 0; n < state.range(1); ++n)
;
hist(dis(gen));
}
}
BENCHMARK(NoThreads)
->UseRealTime()
->Args({1 << 4, 0})
->Args({1 << 6, 0})
->Args({1 << 8, 0})
->Args({1 << 10, 0})
->Args({1 << 14, 0})
->Args({1 << 18, 0})
->Args({1 << 4, 5})
->Args({1 << 6, 5})
->Args({1 << 8, 5})
->Args({1 << 10, 5})
->Args({1 << 14, 5})
->Args({1 << 18, 5})
->Args({1 << 4, 10})
->Args({1 << 6, 10})
->Args({1 << 8, 10})
->Args({1 << 10, 10})
->Args({1 << 14, 10})
->Args({1 << 18, 10})
->Args({1 << 4, 50})
->Args({1 << 6, 50})
->Args({1 << 8, 50})
->Args({1 << 10, 50})
->Args({1 << 14, 50})
->Args({1 << 18, 50})
->Args({1 << 4, 100})
->Args({1 << 6, 100})
->Args({1 << 8, 100})
->Args({1 << 10, 100})
->Args({1 << 14, 100})
->Args({1 << 18, 100})
;
BENCHMARK(AtomicStorage)
->UseRealTime()
->Threads(1)
->Threads(2)
->Threads(4)
->Args({1 << 4, 0})
->Args({1 << 6, 0})
->Args({1 << 8, 0})
->Args({1 << 10, 0})
->Args({1 << 14, 0})
->Args({1 << 18, 0})
->Args({1 << 4, 5})
->Args({1 << 6, 5})
->Args({1 << 8, 5})
->Args({1 << 10, 5})
->Args({1 << 14, 5})
->Args({1 << 18, 5})
->Args({1 << 4, 10})
->Args({1 << 6, 10})
->Args({1 << 8, 10})
->Args({1 << 10, 10})
->Args({1 << 14, 10})
->Args({1 << 18, 10})
->Args({1 << 4, 50})
->Args({1 << 6, 50})
->Args({1 << 8, 50})
->Args({1 << 10, 50})
->Args({1 << 14, 50})
->Args({1 << 18, 50})
->Args({1 << 4, 100})
->Args({1 << 6, 100})
->Args({1 << 8, 100})
->Args({1 << 10, 100})
->Args({1 << 14, 100})
->Args({1 << 18, 100})
;
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