C / C++ / MFC

class CMemStream : public CAsyncStream  <br />
{<br />
    ........<br />
    void Lock()<br />
    {<br />
        m_csLock.Lock();<br />
    }<br />
    void Unlock()<br />
    {<br />
        m_csLock.Unlock();<br />
    }<br />
<br />
private:<br />
    CCritSec       m_csLock;<br />
};

class CAsyncStream<br />
{<br />
public:<br />
    ........<br />
    virtual void Lock() = 0;<br />
    virtual void Unlock() = 0;<br />
};

for (each employee in list) {
  CString strSignature;
  *pArchive << pEmployee->getSignature();
  pEmployee->serialize (pArchive);
}

CString strSignature;
strSignature << *pArchive;
CEmployee* pEmployee = EmployeeClassFactory.createObject (strSignature);
if (pEmployee == NULL) {
   // bad object read in
} else {
   pEmployee->serialize (pArchive);
}

// Add pEmployee to list - doesn't matter if it's STL or not