bench_move_semantics.cpp File Reference

#include "BenchTimer.h"
#include "../test/MovableScalar.h"
#include <Eigen/Core>
#include <iostream>
#include <utility>

Functions
template<typename MatrixType >
void	copy_matrix (MatrixType &m)
template<typename MatrixType >
void	move_matrix (MatrixType &&m)
template<typename Scalar >
void	bench (const std::string &label)
int	main ()

Function Documentation

bench()

template<typename Scalar >

void bench

(

const std::string &

label

)

                                   {
  using MatrixType = Eigen::Matrix<Eigen::MovableScalar<Scalar>, 1, 10>;
  Eigen::BenchTimer t;
 
  int tries = 10;
  int rep = 1000000;
 
  MatrixType data = MatrixType::Random().eval();
  MatrixType dest;
 
  BENCH(t, tries, rep, copy_matrix(data));
  std::cout << label << " copy semantics: " << 1e3 * t.best(Eigen::CPU_TIMER) << " ms" << std::endl;
 
  BENCH(t, tries, rep, move_matrix(std::move(data)));
  std::cout << label << " move semantics: " << 1e3 * t.best(Eigen::CPU_TIMER) << " ms" << std::endl;
}

References BENCH, copy_matrix(), Eigen::CPU_TIMER, data, UniformPSDSelfTest::label, move_matrix(), and plotPSD::t.

copy_matrix()

template<typename MatrixType >

void copy_matrix

(

MatrixType &

m

)

                                {
  MatrixType tmp(m);
  m = tmp;
}

References m, and tmp.

Referenced by bench().

main()

int main

(

)

           {
  bench<float>("float");
  bench<double>("double");
  return 0;
}

move_matrix()

template<typename MatrixType >

void move_matrix

(

MatrixType &&

m

)

                                 {
  MatrixType tmp(std::move(m));
  m = std::move(tmp);
}

References m, and tmp.

Referenced by bench().