工作中需要写一个cpp，但是因为我的水平太差，leader为了避免我写的程序内存泄漏要求我使用boost shared_ptr

以下是构建一个demo的过程

/home/a.cpp:

#include <iostream>
#include <boost/shared_ptr.hpp>

class implementation
{
public:
    ~implementation() { std::cout <<"destroying implementation\n"; }
    void do_something() { std::cout << "did something\n"; }
};

void test()
{
    boost::shared_ptr<implementation> sp1(new implementation());
    std::cout<<"The Sample now has "<<sp1.use_count()<<" references\n";

    boost::shared_ptr<implementation> sp2 = sp1;
    std::cout<<"The Sample now has "<<sp2.use_count()<<" references\n";
    
    sp1.reset();
    std::cout<<"After Reset sp1. The Sample now has "<<sp2.use_count()<<" references\n";

    sp2.reset();
    std::cout<<"After Reset sp2.\n";
}

int main()
{
    test();
    return 0;
}

编译：

g++ -I /home/boost_1_43_0/include/ a.cpp

运行和结果：

LINUX:/home # ./a.out
The Sample now has 1 references
The Sample now has 2 references
After Reset sp1. The Sample now has 1 references
destroying implementation
After Reset sp2.