#include <iostream>
#include <stdio.h>
#include <ctime>
#include <unistd.h>
#include <memory>
#include <vector>
#include <chrono>
#include <string>
#include <sstream>
typedef std::chrono::high_resolution_clock Clock;

typedef decltype(Clock::now()) Clock_Now;

using namespace std;

class foo
{
public:
	foo(){};
	~foo(){};
	
	std::vector<int> v;
	double data;
};

string time2str(Clock_Now t1, Clock_Now t2)
{
	stringstream ss;
	ss<<std::chrono::duration_cast<std::chrono::microseconds>(t2 - t1).count()
		<<" microseconds"<<endl<<endl;
	return ss.str();
}
int main()
{
	constexpr int count = 1000000; 
	auto t1 = Clock::now();
	for (int i = 0; i < count; ++i)
	{
		unique_ptr<foo> ptrFoo = make_unique<foo>();
	}
    auto t2 = Clock::now();
    std::cout << "make_unique "<< count<< " times "
              << time2str(t1, t2);

	t1 = Clock::now();
	for (int i = 0; i < count; ++i)
	{
		shared_ptr<foo> ptrFoo = make_shared<foo>();
	}
    t2 = Clock::now();
    std::cout << "make_shared "<< count<< " times "
              << time2str(t1, t2);


	t1 = Clock::now();
	for (int i = 0; i < count; ++i)
	{
		foo* ptrFoo = new foo;
		delete ptrFoo;
	}
    t2 = Clock::now();
    std::cout << "raw point "<< count<< " times "
              << time2str(t1, t2);

	char t;
	cin >> t;

	return 1;
} compile with

g++-5 -std=c++1y unique_ptr.cpp -o uniq