Static allocated smart pointer

What language(s) do you have in mind? Also, when and under what circumstances does the statically allocated object get deallocated? (And what precisely do you mean by statically allocated?)

Can you give an example?

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Original post by programering I've got an idea to invent a smart pointer for static allocated objects. I need it because I want the pointer itself to be reseted to NULL when the source it points to become deallocated. So is it possible to detect its deallocation.

... And when and why, exactly, are you expecting a statically allocated object to be deallocated? And why do you need to do something in response to that?

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Original post by jyk What language(s) do you have in mind?

C Plus Plus of coarse.

Quote:

Original post by jyk Also, when and under what circumstances does the statically allocated object get deallocated? (And what precisely do you mean by statically allocated?) Can you give an example?

For example if the object to be used for my smart pointer(ObjectToBeUsed) is an actual instance member within another object(SourceObject). That's what I thought statically allocation was(If that's right?).

Like this:

class SourceObject{    ObjectToBeUsed testSource; // Its origin is here.};

So when a SourceObject instance is deallocated, a such smart pointer of mine with this testSource as target shall be notified and set its internal raw pointer to NULL.

Is there a way to check if an address is deallocated?

It's only static if you put the keyword "static" in front of it, which essentially makes it a global.

What you want is composition, one object containing another object.

If you want to be notified of deallocation, implement a destructor, it'll be called upon destruction.