智能指针练习

#include <iostream>
#include <map>
#include <memory>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
void DeleteIntPtr(int *p) {
    std::cout << "call DeleteIntPtr" << std::endl;
    std::cout << *p << std::endl;
    close(*p);
    delete p;
}
int main()
{
    int *clientfd = new int(socket(AF_INET, SOCK_STREAM, 0));
    std::shared_ptr<int> sptr(clientfd, DeleteIntPtr);
    std::cout << sptr.get() << std::endl;
    std::cout << *sptr.get() << std::endl;
    std::cout << *clientfd << std::endl;
    if (-1 == *clientfd) {
        std::cout << "create socket error! errno: " << errno << std::endl;
        exit(EXIT_FAILURE);
    }
    struct sockaddr_in server_addr;
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(8888);
    server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
    //连接rpc服务节点
    if (-1 == connect(*sptr.get(), (struct sockaddr*)&server_addr, sizeof(server_addr))) {
        std::cout << "connect error! errno: " << errno << std::endl;
        //close(clientfd);
        //exit(EXIT_FAILURE);
        return 0;
    }
    //发送rpc请求
    /*if (-1 == send(clientfd, send_rpc_str.c_str(), send_rpc_str.size(), 0)) {
        std::cout << "send error! errno: " << errno << std::endl;
        close(clientfd);
        return;
    }
    close(clientfd);*/
    return 0;
}
///
#if 0
typedef std::map<std::string, int> DEMOMAP;
void fun(const DEMOMAP &m) {
    for (auto mm : m) {
        std::cout << mm.first << std::endl;
    }
}
int main()
{
    std::auto_ptr<DEMOMAP> m(new DEMOMAP());
    m.get()->insert({"demo", 1});
    std::cout << m.get()->empty() << std::endl;
    fun(*m.get());
    return 0;
}
#endif