数据内存块的创建、销毁与传递

#include "stdafx.h"
#include <memory>
#include <list>
// #include <unordered_map>

std::list<std::unique_ptr<char>> dlist;

void put3(std::unique_ptr<char> &data)
{
    dlist.push_back(std::move(data));
}

void put2(std::unique_ptr<char> &data)
{
    put3(data);
}

void put(std::unique_ptr<char> &data)
{
    put2(data);
}


int main()
{
    const int n = 1000000;
    const int l = 64;

    const char x = '0';
    char *ptr = nullptr;

    for (int i=0; i<n; i++)
    {
        std::unique_ptr<char> upt(new char[l+1]);
        if ((ptr = upt.get()) != nullptr)
        {
            memset(ptr, x + (i%10), l);
            ptr[l] = '\0';

            put(upt);

            if (upt.get() != nullptr)
                printf("*");
        }
    }

    std::list<std::unique_ptr<char>>::const_iterator it = dlist.begin();
    for (; it!=dlist.end(); it++)
    {
        // printf("%s\r\n", it->get());
    }

    printf("%ld\r\n", dlist.size());

    dlist.clear();

    return 0;
}