C ++使用数组分配内存 [英] C++ allocating memory using array

问题描述

关于此问题关于如何分配内存而不使用new或malloc，假设我有一个结构链表

concerning this question on how to allocate memory without using new or malloc, suppose I have a structure linked list

struct stack {
 string info;
 stack next*;

};

提供的答案说使用全局字节数组。如何通过分配全局字节数组来实现链表？

The answer provided says use global byte array. How would I implement an linked list by allocating to global byte array?

推荐答案

一种方法是在数据中声明一个内存池

One way is to have a memory pool declared in data segment and have your own memory allocation function.

char myMemoryPool[10000000]; // global variable (can be enclosed in namespace)

void* MyMemoryAlloc (size_t SIZE)
{
 //... use SIZE
}

用法：

A* p = (A*)MyMemoryAlloc(sizeof(A) * 3);

或更准确地说，

template<typename T>
T* MyMemoryAlloc (unsigned int UNITS)
{
//... use (sizeof(A) * UNITS)
}

用法：

A *p = MyMemoryAlloc<A>(3);

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