Force an object to be allocated on the heap

Posted by Warren Seine on Stack Overflow See other posts from Stack Overflow or by Warren Seine
Published on 2010-03-14T12:43:22Z Indexed on 2010/03/14 12:45 UTC
Read the original article Hit count: 196

Filed under:

c++

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boost

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shared-ptr

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heap

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memory-allocation

A C++ class I'm writing uses shared_from_this() to return a valid boost::shared_ptr<>. Besides, I don't want to manage memory for this kind of object.

At the moment, I'm not restricting the way the user allocates the object, which causes an error if shared_from_this() is called on a stack-allocated object.

I'd like to force the object to be allocated with new and managed by a smart pointer, no matter how the user declares it. I thought it could be done through a proxy or an overloaded new operator, but I can't find a proper way of doing that.

Is there a common design pattern for such usage? If it's not possible, how can I test it at compile time?

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