void AFXAPI AfxLockGlobals(int nLockType)
{
ASSERT((UINT)nLockType < CRIT_MAX);
// intialize global state, if necessary
if (!_afxCriticalInit)
{
AfxCriticalInit();
ASSERT(_afxCriticalInit);
}
// nothing necessary on Win32s (no multiple threads)
if (_afxCriticalWin32s)
return;
// initialize specific resource if necessary
if (!_afxLockInit[nLockType])
{
EnterCriticalSection(&_afxLockInitLock);
if (!_afxLockInit[nLockType])
{
InitializeCriticalSection(&_afxResourceLock[nLockType]);
VERIFY(++_afxLockInit[nLockType]);
}
LeaveCriticalSection(&_afxLockInitLock);
}
// lock specific resource
EnterCriticalSection(&_afxResourceLock[nLockType]);
#ifdef _DEBUG
ASSERT(++_afxResourceLocked[nLockType] > 0);
#endif
}
BOOL WINAPI RawDllMain(HINSTANCE /*hInstance*/, DWORD dwReason, LPVOID)
{
if (dwReason == DLL_PROCESS_ATTACH)
{
// Prevent the C runtime DLL from being unloaded prematurely
LoadLibraryA(MSVCRT_DLL);
#ifdef _UNICODE
// give error message and exit if running Unicode on non-Unicode system
if (GetVersion() & 0x80000000)
{
// Note: this message is for programmers who can read english
::MessageBoxA(NULL,
"This application or DLL can not be loaded "
"on Windows 95 or on Windows 3.1. It takes advantage "
"of Unicode features only available on Windows NT.",
"MFC Runtime Module", MB_ICONSTOP|MB_OK);
return FALSE; // and fail
}
#endif
SetErrorMode(SetErrorMode(0) |
SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
// add a reference to thread local storage data
AfxTlsAddRef();
// make sure we have enough memory to attempt to start (8kb)
void* pMinHeap = LocalAlloc(NONZEROLPTR, 0x2000);
if (pMinHeap == NULL)
return FALSE; // fail if memory alloc fails
LocalFree(pMinHeap);
// cause early initialization of _afxCriticalSection
if (!AfxCriticalInit())
return FALSE;
#ifdef _AFX_OLE_IMPL
// set module state before initialization
AFX_MODULE_STATE* pModuleState = _AfxGetOleModuleState();
_AFX_THREAD_STATE* pState = AfxGetThreadState();
pState->m_pPrevModuleState = AfxSetModuleState(pModuleState);
#endif
}
else if (dwReason == DLL_PROCESS_DETACH)
{
#ifdef _AFX_OLE_IMPL
_AFX_THREAD_STATE* pThreadState = _afxThreadState.GetDataNA();
if (pThreadState != NULL)
{
// restore previously-saved module state
VERIFY(AfxSetModuleState(pThreadState->m_pPrevModuleState) ==
_AfxGetOleModuleState());
DEBUG_ONLY(pThreadState->m_pPrevModuleState = NULL);
}
#endif
// free up the _afxCriticalSection
AfxCriticalTerm();
// Now it's OK for C runtime DLL to be unloaded (see LoadLibrary above)
FreeLibrary(GetModuleHandleA(MSVCRT_DLL));
// remove reference from thread local data
AfxTlsRelease();
}
return TRUE; // ok
}
