内存池
地址:
http://www.ibm.com/developerworks/cn/linux/l-cn-ppp/index6.html
内部构造
内存池类MemoryPool的声明如下：
class MemoryPool
{
private:
MemoryBlock* pBlock;
USHORT nUnitSize;
USHORT nInitSize;
USHORT nGrowSize;
public:
MemoryPool( USHORT nUnitSize,
USHORT nInitSize = 1024,
USHORT nGrowSize = 256 );
~MemoryPool();
void* Alloc();
void Free( void* p );
};
|
MemoryBlock为内存池中附着在真正用来为内存请求分配内存的内存块头部的结构体，它描述了与之联系的内存块的使用信息：
struct MemoryBlock
{
USHORT nSize;
USHORT nFree;
USHORT nFirst;
USHORT nDummyAlign1;
MemoryBlock* pNext;
char aData[1];
static void* operator new(size_t, USHORT nTypes, USHORT nUnitSize)
{
return ::operator new(sizeof(MemoryBlock) + nTypes * nUnitSize);
}
static void operator delete(void *p, size_t)
{
::operator delete (p);
}
MemoryBlock (USHORT nTypes = 1, USHORT nUnitSize = 0);
~MemoryBlock() {}
};
Aache实现 |
http://www.cnblogs.com/bangerlee/archive/2011/09/01/2161437.html