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Editorial Team
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Asked: 2026-05-13T23:38:00+00:00

Is there best practice for managing Object shared by 2 or more others Object.

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Is there best practice for managing Object shared by 2 or more others Object. Even when running on different thread?

For example A is created and a pointer to it is given to B and C.
ObjA A = new ObjA();
B->GiveObj(A);
C->GiveObj(A);

Now how can I delete objA?

So far what I though about is A monitor how many ref there are to it and when this counter is 0 it delete this (such as when A is passed, the receiver call A->Aquire(), when its done it call A->release();

Or I could tell B->RemoveObj(A); and C->RemoveObj(A); The problem with that is if B or C are running on a different thread, I cannot delete A until they are done with A, and they have seen The RemoveObj call. (Which require a bunch of messy flags).

Would there be a nice way to do this, possibly with Signal/Slot?

Thanks

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1 Answer

  1. Editorial Team

    The best option is to use a smart pointer implementation such as Boost’s shared_ptr.

    This allows you to pass around the pointers as needed, without worrying about the deletion.

    Edit:

    I just realized you had the signal/slot tag added. If by chance you’re using Qt, you probably want QSharedPointer (or similar) instead of a boost pointer implementation.

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