CMoLineMgr

#ifndef __E3GLOGOBJECTDB_H__
#define __E3GLOGOBJECTDB_H__ 
 
#include "PubCommon\Singleton.h"
#include "PubCommon\MemoryManager.h"
#include "PubCommon.h" 
 
class CMoLineMgr
{
public:
    CMoLineMgr(Win32Tools::CMemoryManager* pMemMgr);
    virtual ~CMoLineMgr();
public:
    void AddMemLine(CMemLine*& pMoLine);
    void MoveFirst();                   // 移动到第一个
    bool GetMoLine(CMoLine*& pMoLine);  // 循环获取 MO
    size_t GetSize();
private:
    Win32Tools::CMemoryManager* m_pMemMgr;
    CMoLine     m_BeginMoLine;  // 自下一个开始有效
    CMoLine*    m_pAddMoLine;   // 添加 MO 的专用游标
    CMoLine*    m_pReadMoLine;  // 读取 MO 的专用游标
    size_t      m_iTableCnt;
}; 
 
#endif 

#include "stdafx.h"
#include "MoLineMgr.h" 
 
CMoLineMgr::CMoLineMgr(Win32Tools::CMemoryManager* pMemMgr)
    : m_pMemMgr(pMemMgr)
    , m_pAddMoLine(NULL)
    , m_pReadMoLine(NULL)
    , m_iTableCnt()
{
    m_pAddMoLine = &m_BeginMoLine;
} 
 
CMoLineMgr::~CMoLineMgr()
{
} 
 
void CMoLineMgr::AddMemLine(CMemLine*& pMemLine)
{
    if(pMemLine == NULL)
        return;
    CMoLine* pNew = (CMoLine*)m_pMemMgr->GetMemory(sizeof(CMoLine));
    pNew = new (pNew) CMoLine;
    pNew->m_pMemLine = pMemLine;
    m_pAddMoLine->m_pNextMoLine = pNew;
    m_pAddMoLine = pNew;
    ++m_iTableCnt;
} 
 
size_t CMoLineMgr::GetSize(void)
{
    return m_iTableCnt;
} 
 
void CMoLineMgr::MoveFirst()
{
    // 移动到第一个 
 
    m_pReadMoLine = &m_BeginMoLine;
} 
 
bool CMoLineMgr::GetMoLine( CMoLine*& pMoLine )
{
    // 循环获取 MO 
 
    if(m_pReadMoLine->m_pNextMoLine == NULL)
    {
        pMoLine = NULL;
        return false;
    }
    else
    {
        pMoLine = m_pReadMoLine->m_pNextMoLine;
        m_pReadMoLine = m_pReadMoLine->m_pNextMoLine;
        return true;
    }
}