stl list resize 是怎么用的？

aaadddzxc

为什么我一用这个东西就崩溃了

       list<NETCORE_THREADWORK> stl_ThreadWork;
        stl_ThreadWork.resize(100);

linux_c_py_php

1. Resizes the container so that it contains n elements.
   
2. 
   
3. If n is smaller than the current container size, the content is reduced to its first n elements, removing those beyond (and destroying them).
   
4. 
   
5. If n is greater than the current container size, the content is expanded by inserting at the end as many elements as needed to reach a size of n. If val is specified, the new elements are initialized as copies of val, otherwise, they are value-initialized.
   
6. 
   
7. Notice that this function changes the actual content of the container by inserting or erasing elements from it.

复制代码

linux_c_py_php

看看构造函数 与 析构函数实现有没有什么问题。

aaadddzxc

        list<NETCORE_THREADWORK> stl_ThreadWork;
        stl_ThreadWork.resize(100);
        stl_MapWork.insert(make_pair(pSt_hThreadPool->hThread,stl_ThreadWork));

我在构造他的时候指定的内存大小

然后在另外一个地方访问他就挂了

wk_g7

当你调用resize(100)的时候，
list会为分配100个NETCORE_THREADWORK空间，并且第一个调用NETCORE_THREADWORK（），其余99个调用NETCORE_THREADWORK(const NETCORE_THREADWORK &)并且参数是第一个分配的内容。
如果你没有重写NETCORE_THREADWORK(const NETCORE_THREADWORK &)，那么这个默认函数会是一个浅copy