Re: [Boost-users] [shared_ptr] Is there an interface to set the ptr a shared_ptr holds

Subject: Re: [Boost-users] [shared_ptr] Is there an interface to set the ptr a shared_ptr holds
From: Scott McMurray (me22.ca+boost_at_[hidden])
Date: 2008-12-28 22:35:53

On Sun, Dec 28, 2008 at 22:29, Max <loadcom_at_[hidden]> wrote:
>
> I have the following code scenario:
>
> A *pa = NULL;
>
> // pa will be allocated here (by 3rd-party function)
> // by setA(),
> // whose behavior could not be changed
> setA(pa);   // prototype: void setA(A*& pa)
>
> //...
>
> pa->close();
>

I think the following is fine:

A *pa_ = 0;
setA(pa_);
boost::shared_ptr<A> pa(pa_, boost::bind(&A::close, _1));

Since the shared_ptr constructor will call the deleter if its internal
allocation fails.

~ Scott