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vicviper

std::vector and heap allocation on DLLs

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Hi, I am making an interface for a DLL that looks like this: class __DllExport MyInterface { std::vector <int> MyArray; . . . } I have a class like this defined both in the DLL and in the main program, with the usual __DllImport & __DllExport interfaces. In the main program, I create multiple objects of type "MyInterface"... My question is... the memory allocated by MyArray vector, is stored in the DLL memory heap, or in the EXE memory heap? Is this mechanism safe? or it can cause some memory problems, like trying to allocate/deallocate memory in the wrong memory heap? Vic

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Unless the vector is exported then this construct is not safe. In general classes defined in DLLs should have as few implementation details visible as possible. Consider creating an abstract base class and a factory function in your DLL that produces instances of that class.

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