CWinThread 部分代码

CWinThread* AFXAPI AfxGetThread()
{
	// check for current thread in module thread state
	AFX_MODULE_THREAD_STATE* pState = AfxGetModuleThreadState();
	CWinThread* pThread = pState->m_pCurrentWinThread;
	return pThread;
}

AFX_MODULE_THREAD_STATE* AFXAPI AfxGetModuleThreadState()
{
	AFX_MODULE_THREAD_STATE* pResult=AfxGetModuleState()->m_thread.GetData();
	ENSURE(pResult != NULL);
	return pResult;
}

AFX_MODULE_STATE* AFXAPI AfxGetModuleState()
{
	_AFX_THREAD_STATE* pState = _afxThreadState;
	ENSURE(pState);
	AFX_MODULE_STATE* pResult;
	if (pState->m_pModuleState != NULL)
	{
		// thread state's module state serves as override
		pResult = pState->m_pModuleState;
	}
	else
	{
		// otherwise, use global app state
		pResult = _afxBaseModuleState.GetData();
	}
	ENSURE(pResult != NULL);
	return pResult;
}

AFX_INLINE TYPE* GetData()
	{
		TYPE* pData = (TYPE*)CProcessLocalObject::GetData(&CreateObject);
		ENSURE(pData != NULL);
		return pData;
	}

CNoTrackObject* CProcessLocalObject::GetData(CNoTrackObject* (AFXAPI* pfnCreateObject)())
{
	if (m_pObject == NULL)
	{
		AfxLockGlobals(CRIT_PROCESSLOCAL);
		TRY
		{
			if (m_pObject == NULL)
				m_pObject = (*pfnCreateObject)();
		}
		CATCH_ALL(e)
		{
			AfxUnlockGlobals(CRIT_PROCESSLOCAL);
			THROW_LAST();
		}
		END_CATCH_ALL
		AfxUnlockGlobals(CRIT_PROCESSLOCAL);
	}
	return m_pObject;
}