为什么不从入口点函数调用FreeLibrary？

问题描述

我正在写一个DLL，需要动态调用一个单独的DLL多次。我想保持被调用程序加载，然后只是卸载它，当我的DLL卸载。但根据微软，这是一个。

I'm writing a DLL that needs to call a separate DLL dynamically multiple times. I would like to keep the callee loaded and then just unload it when my DLL is unloaded. But according to Microsoft, that's a bad idea.

这里是令人讨厌的代码。可以有人解释为什么我不应该从我的DLL的入口点调用LoadLibrary和FreeLibrary？

Here's the offending code. Can somebody explain why I shouldn't call LoadLibrary and FreeLibrary from my DLL's entry point?

BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
switch (ul_reason_for_call) {
    case DLL_PROCESS_DETACH :
            if (hLogLib != NULL) FreeLibrary(hLogLib);
            break;
    }
    return TRUE;
}

推荐答案

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