DllMain冻结注册COM dll时

时间：2011-04-11 14:27:09

标签： c++ windows dll com regsvr32

我尝试注册名为 MixCenter.dll 的COM dll。我找到了它所依赖的所有dll。当DllMain第一次成为高管时，它会冻结并永不回归。这似乎是一个死锁，但我不会调用任何LoadLibrary，它永远不会执行到DllMain。这种情况还有其他原因吗？这就是DllMain看起来的样子：

BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)  
{  
    switch(ul_reason_for_call)   
    {  
        case DLL_PROCESS_ATTACH:   
            g_hinstDLL = hModule;  
            LOG(INFO) <<"--------------Begin Logging--------------";  
            return DllEntryPoint((HINSTANCE)hModule, ul_reason_for_call, lpReserved);  
        case DLL_THREAD_ATTACH:   
            break;  
        case DLL_THREAD_DETACH:   
            break;  
        case DLL_PROCESS_DETACH:   
            LOG(INFO) << "--------------End Logging--------------";  
            break;  
    }   
    return true;  
}

我使用Dependency Walker记录整个执行，日志的基本部分是：

LoadLibraryExW("MixCenter.dll", 0x00000000, LOAD_WITH_ALTERED_SEARCH_PATH) called from "REGSVR32.EXE" at address 0x003920FF by thread 1.  
Loaded "MIXCENTER.DLL" at address 0x10000000 by thread 1.  Successfully hooked module.  
Loaded "MSVCR80.DLL" at address 0x6F250000 by thread 1.  Successfully hooked module.  
Loaded "D3D9.DLL" at address 0x6C130000 by thread 1.  Successfully hooked module.  
Loaded "D3D8THK.DLL" at address 0x73490000 by thread 1.  Successfully hooked module.  
Loaded "D3DX9_40.DLL" at address 0x69B00000 by thread 1.  Successfully hooked module.  
Loaded "MSVCP80.DLL" at address 0x71430000 by thread 1.  Successfully hooked module.  
DllMain(0x6F250000, DLL_PROCESS_ATTACH, 0x00000000) in "MSVCR80.DLL" called by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "FlsAlloc") called from "MSVCR80.DLL" at address 0x6F253001 and returned 0x75CE8731 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "FlsGetValue") called from "MSVCR80.DLL" at address 0x6F25300E and returned 0x75CE0DC7 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "FlsSetValue") called from "MSVCR80.DLL" at address 0x6F25301B and returned 0x75CE2904 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "FlsFree") called from "MSVCR80.DLL" at address 0x6F253028 and returned 0x75CE2AD7 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "InitializeCriticalSectionAndSpinCount") called from "MSVCR80.DLL" at address 0x6F259668 and returned 0x75CE0D2B by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252BBC and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.    
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252C33 and returned 0x775FF050 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "EncodePointer") called from "MSVCR80.DLL" at address 0x6F252D3A and returned 0x77603275 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "DecodePointer") called from "MSVCR80.DLL" at address 0x6F252D4A and returned 0x775FF050 by thread 1.
GetProcAddress(0x75C90000 [KERNEL32.DLL], "IsProcessorFeaturePresent") called from "MSVCR80.DLL" at address 0x6F26A967 and returned 0x75CE0DD4 by thread 1.  
GetProcAddress(0x75BC0000 [MSVCRT.DLL], "_set_error_mode") called from "MSVCR80.DLL" at address 0x6F254447 and returned 0x75BD4A3D by thread 1.  
GetProcAddress(0x75BC0000 [MSVCRT.DLL], "?set_terminate@@YAP6AXXZP6AXXZ@Z") called from "MSVCR80.DLL" at address 0x6F254463 and returned 0x75BEEBB7 by thread 1.  
GetProcAddress(0x75BC0000 [MSVCRT.DLL], "_get_terminate") called from "MSVCR80.DLL" at address 0x6F25447F and returned NULL by thread 1. Error:  (127).
GetProcAddress(0x75C90000 [KERNEL32.DLL], "FindActCtxSectionStringW") called from "MSVCR80.DLL" at address 0x6F251DBE and returned 0x75CE18F9 by thread 1.  
GetProcAddress(0x75C90000 [KERNEL32.DLL], "GetSystemWindowsDirectoryW") called from "MSVCR80.DLL" at address 0x6F251F1A and returned 0x75CE0E64 by thread 1.  
DllMain(0x6F250000, DLL_PROCESS_ATTACH, 0x00000000) in "MSVCR80.DLL" returned 1 (0x1) by thread 1.  
DllMain(0x73490000, DLL_PROCESS_ATTACH, 0x00000000) in "D3D8THK.DLL" called by thread 1.  
DllMain(0x73490000, DLL_PROCESS_ATTACH, 0x00000000) in "D3D8THK.DLL" returned 1 (0x1) by thread 1.  
DllMain(0x6C130000, DLL_PROCESS_ATTACH, 0x00000000) in "D3D9.DLL" called by thread 1.  
DllMain(0x6C130000, DLL_PROCESS_ATTACH, 0x00000000) in "D3D9.DLL" returned 1 (0x1) by thread 1.  
DllMain(0x69B00000, DLL_PROCESS_ATTACH, 0x00000000) in "D3DX9_40.DLL" called by thread 1.  
DllMain(0x69B00000, DLL_PROCESS_ATTACH, 0x00000000) in "D3DX9_40.DLL" returned 1 (0x1) by thread 1.  
DllMain(0x71430000, DLL_PROCESS_ATTACH, 0x00000000) in "MSVCP80.DLL" called by thread 1.  
DllMain(0x71430000, DLL_PROCESS_ATTACH, 0x00000000) in "MSVCP80.DLL" returned 1 (0x1) by thread 1.  
DllMain(0x10000000, DLL_PROCESS_ATTACH, 0x00000000) in "MIXCENTER.DLL" called by thread 1.

1 个答案:

答案 0 :(得分：6)

DllMain中有很多事情是你无法做到的。你不仅不能自己调用​​LoadLibrary，而且你不能做任何会导致LoadLibrary被调用的事情，并且注册COM服务器听起来好像很容易在LoadLibrary处进行一点。

但这不是你在DllMain中无法做到的程度。列表很长且很复杂，所以最好的办法是使用两阶段初始化方案，其中DllMain只是设置一个标志，然后你的DLL中的其他一些代码将进行复杂的初始化。这个“其他代码”可能是另一个包含DLL的线程，或者它可能只是一个Init()函数，在调用它们时会从DLL的主例程中调用它。

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