Re: non destructable pointer
In article <1152616901.255055.33150@p79g2000cwp.googlegroups.com>,
Hotlips <kristian_lippert@hotmail.com> wrote:
Hi
In our current system we have a need to hand out pointers, either as
interface pointers or arrays of pointers (we cannot directly hold
references in an STL container). Some of the pointers will be pointing
to statically allocated (not on the heap) objects, meaning a
Boost.SharedPointer or just a simple "delete" is a no-go!
To indicate that we are planning to introduce a NonDeletePtr<> that
will prevent deletion and indicate that memory handling is not an issue
for the recieving part.
My best advice is not reinvent the wheel:)
my choice is boost::shared_ptr as it can handle both cases intermixed
provided you know at the intitial [non-copy] construction time. Then its
just use a different ctor for shared_ptr for each case. One with the
'usual' ctor with a T *, and in the non-delete case with a T * and a
deleter. which is simply void dont_delete(void *){}.
once the shared_ptr is constructed the user does not need to know if its
on the heap via new, or is constructed in the data segment of the
program, the stack etc. The usage after initial construction.
shared_ptr works well in stl containers.
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
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