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MemoryPool.h
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MemoryPool.h
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/*
@brief : 一个简单而有力的c++内存池实现
* @author : acedtang
* @date : 2021/2/18
* @version : ver 1.0
* @inparam :
* @outparam :
*/
#ifndef __MEMORY_POOL_H
#define __MEMORY_POOL_H
namespace ace {
#define MEMORYSIZ 1024 * 1024 * 64
#define ZONEID 0x1d4a11
#define MINFRAGMENT 64
class MemoryBlock
{
public:
//包含头部长度以及可能的微小片段
int siz;
//标记内存是否有被使用(0的话表示free 1表示使用)
int tag;
MemoryBlock* prev;
MemoryBlock* next;
int id;
};
class MemoryZone
{
public:
//包含头,所有分配的内存
int siz;
//总共使用的内存
int used;
//内存块链表表头
MemoryBlock blocklist;
//指向空闲区域
MemoryBlock* rover;
public:
void clear();
};
class MemoryPool
{
public:
MemoryPool();
~MemoryPool();
template<class _T>
_T* malloc();
void free(void*);
private:
void* malloc(int siz);
MemoryZone* zone;
};
template<class _T>
_T* ace::MemoryPool::malloc()
{
_T* t = (_T*)malloc(sizeof(_T));
if (t == nullptr) return nullptr;
new(t)_T();
return t;
}
}
#endif