string_benchmark/benchmark_boost_geometry_wkt.cpp at master · mloskot/string_benchmark · GitHub

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#define CELERO_STATIC
#include <cmath>
#include <random>
#include <sstream>
#include <string>
#include <vector>
#include <boost/geometry.hpp>
#include <boost/lexical_cast.hpp>
#include <celero/Celero.h>
#include "benchmark.hpp"

#ifdef NDEBUG
enum { bg_samples = 30, bg_iterations = 0 };
#else
enum { bg_samples = 1, bg_iterations = 1 };
#endif

// Uncomment to enable boost::geometry::to_wkt from https://github.com/boostorg/geometry/pull/670
#define BOOST_GEOMETRY_PR670

namespace boost { namespace geometry {
template <typename Geometry>
inline std::string to_wkt_wrapper(Geometry const& geometry)
{
    std::stringstream ss;
    ss << boost::geometry::wkt(geometry);
    return ss.str();
}
template <typename Geometry>
inline std::string to_wkt_wrapper(Geometry const& geometry, int significant_digits)
{
    std::stringstream ss;
    ss.precision(significant_digits);
    ss << boost::geometry::wkt(geometry);
    return ss.str();
}
}}

struct Fixture : celero::TestFixture
{
    using point_t = boost::geometry::model::d2::point_xy<double>;
    boost::geometry::model::multi_point<point_t> multi_point_;
    std::vector<point_t> points_;

    std::vector<celero::TestFixture::ExperimentValue> getExperimentValues() const override
    {
        std::uint64_t const total_tests = 4;
        // Problem space as number of points (pairs of X/Y)
        std::vector<celero::TestFixture::ExperimentValue> v;
        v.emplace_back(1, uint64_t(std::pow(2, 0)));
        v.emplace_back(256, uint64_t(std::pow(2, total_tests - 0)));
        v.emplace_back(512, uint64_t(std::pow(2, total_tests - 1)));
        v.emplace_back(1024, uint64_t(std::pow(2, total_tests - 2)));
        return v;
    }

    void setUp(celero::TestFixture::ExperimentValue const& e) override
    {
        std::random_device rd;
        std::mt19937 g(rd());
        std::uniform_real_distribution<> d(-180.0, 180.0);

        auto const size = static_cast<std::size_t>(e.Value);
        this->points_.reserve(size);
        for (std::size_t i = 0; i < size; i++)
        {
            auto const x = d(g);
            auto const y = d(g);

            boost::geometry::append(this->multi_point_, boost::geometry::make<point_t>(x, y));
            this->points_.emplace_back(x, y);
        }
    }

    void tearDown() override
    {
        multi_point_ = {};
        points_ = {};
    }
};

CELERO_MAIN

BASELINE_F(wkt, to_string, Fixture, bg_samples, bg_iterations)
{
    for (auto const& p : this->points_)
    {
        celero::DoNotOptimizeAway(std::to_string(p.x()));
        celero::DoNotOptimizeAway(std::to_string(p.y()));
    }
}

BENCHMARK_F(wkt, stringstream, Fixture, bg_samples, bg_iterations)
{
    std::ostringstream oss;
    for (auto const& p : this->points_)
    {
        celero::DoNotOptimizeAway(oss << p.x());
        celero::DoNotOptimizeAway(oss << p.y());
    }
    celero::DoNotOptimizeAway(oss.str());
}

BENCHMARK_F(wkt, lexical_cast, Fixture, bg_samples, bg_iterations)
{
    std::ostringstream oss;
    for (auto const& p : this->points_)
    {
        celero::DoNotOptimizeAway(boost::lexical_cast<std::string>(p.x()));
        celero::DoNotOptimizeAway(boost::lexical_cast<std::string>(p.y()));
    }
    celero::DoNotOptimizeAway(oss.str());
}

BENCHMARK_F(wkt, wkt, Fixture, bg_samples, bg_iterations)
{
    std::ostringstream oss;
    celero::DoNotOptimizeAway(oss << boost::geometry::wkt(this->multi_point_));
    celero::DoNotOptimizeAway(oss.str());
}

BENCHMARK_F(wkt, to_wkt_wrap, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt_wrapper(this->multi_point_));
}

BENCHMARK_F(wkt, to_wkt_wrap_3dig, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt_wrapper(this->multi_point_, 3));
}

BENCHMARK_F(wkt, to_wkt_wrap_9dig, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt_wrapper(this->multi_point_, 9));
}


#ifdef BOOST_GEOMETRY_PR670
BENCHMARK_F(wkt, to_wkt, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt(this->multi_point_));
}

BENCHMARK_F(wkt, to_wkt_3dig, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt(this->multi_point_, 3));
}

BENCHMARK_F(wkt, to_wkt_9dig, Fixture, bg_samples, bg_iterations)
{
    celero::DoNotOptimizeAway(boost::geometry::to_wkt(this->multi_point_, 9));
}
#endif