[boost] Re: [shared_ptr] dealing with shared_ptr and cycles

From: Lorenzo Bettini (bettini_at_[hidden])
Date: 2005-06-07 08:11:43

David Abrahams wrote:
> Lorenzo Bettini <bettini_at_[hidden]> writes:
> 
> 
>>David Abrahams wrote:
>>
>>>Can you deal with deallocation of the whole network at once?  It often
>>>works to maintain the nodes (C objects) in a container like a deque
>>>and let them link to one another with raw pointers.
>>>Otherwise you may be in need of a real GC.
>>>
>>
>>I solved the problem in a (probably) not too elegant way: when I know 
>>that I'm creating objects with mutual dependences say A and B I store 
>>weak pointers, and I store a shared pointer to A and B into a list.  As 
>>long as the list survives the weak pointers are still valid.  When I 
>>want to deallocate everything, all I have to do is to deallocate the 
>>list.  This worked, and also valgrind says there are no leaks...
> 
> 
> The smart pointers may not be buying you much of anything in that
> case.
> 

so what could be an alternative?

Lore

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