计算机等级考试内存池的C++实现代码(2)

　　pmb_block=pmb_block->m_pNext;

　　if(!pmb_block)

　　return;

　　}

　　pmb_block->m_nFree++;//可分配数目+1

　　*((USHORT*)pfree)=pmb_block->m_nFirst;

　　pmb_block->m_nFirst=(USHORT)((ULONG)pfree-(ULONG)pmb_block->m_data)/m_nUnitSize;

　　if(pmb_block->m_nFree*m_nUnitSize==pmb_block->m_nSize)//如何该链块为空

　　{

　　pmb_preblock->m_pNext=pmb_block->m_pNext;

　　if((ULONG)pmb_preblock==(ULONG)m_pFirst)

　　m_pFirst=NULL;

　　delete pmb_block;

　　}

　　}

　　MemoryPool::~MemoryPool(void)

　　{

　　if(m_pFirst)

　　FreeMemoryBlock(m_pFirst);

　　}

　　void MemoryPool::FreeMemoryBlock(MemoryBlock *pblock)

　　{

　　if(pblock->m_pNext)

　　FreeMemoryBlock(pblock->m_pNext);

　　delete pblock;

　　pblock=NULL;

　　}