LoadLibrary与FreeLibrary必须在同一线程中调用吗？

[qq1303710309]

在线程a中加载dll(LoadLibrary)，线程b中调用dll，然后调用FreeLibrary释放，线程b在释放时退出。

改为在线程a中加载，线程b中调用，调用完毕后在线程a中释放，就没有问题。

LoadLibrary与FreeLibrary必须在同一线程中调用吗？

[oyljerry]

建议是在一个线程中使用，这样dll模块等句柄都不需要传递，也能保证线程安全

[赵4老师]

FreeLibrary The FreeLibrary function decrements the reference count of the loaded dynamic-link library (DLL) module. When the reference count reaches zero, the module is unmapped from the address space of the calling process and the handle is no longer valid. BOOL FreeLibrary( HMODULE hLibModule // handle to loaded library module ); Parameters hLibModule Handle to the loaded library module. The LoadLibrary or GetModuleHandle function returns this handle. Return Values If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To get extended error information, call GetLastError. Remarks Each process maintains a reference count for each loaded library module. This reference count is incremented each time LoadLibrary is called and is decremented each time FreeLibrary is called. A DLL module loaded at process initialization due to load-time dynamic linking has a reference count of one. This count is incremented if the same module is loaded by a call to LoadLibrary. Before unmapping a library module, the system enables the DLL to detach from the process by calling the DLL's DllMain function, if it has one, with the DLL_PROCESS_DETACH value. Doing so gives the DLL an opportunity to clean up resources allocated on behalf of the current process. After the entry-point function returns, the library module is removed from the address space of the current process. It is not safe to call FreeLibrary from DllMain. For more information, see the Remarks section in DllMain. Calling FreeLibrary does not affect other processes using the same library module. QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Requires version 1.0 or later. Header: Declared in winbase.h. Import Library: Use kernel32.lib. See Also Dynamic-Link Libraries Overview, Dynamic-Link Library Functions, DllMain, FreeLibraryAndExitThread, GetModuleHandle, LoadLibrary

[smwhotjay]

谁申请谁释放，类似new delete ，如果跨dll,那么可能导致堆不一致。具体看core编程 dll

[无法支持的类型]

最好是遵循谁申请谁释放原则，无论是线程，进程，哪怕是类