Re: [Boost-users] boost shared_ptr with own dtor

Subject: Re: [Boost-users] boost shared_ptr with own dtor
From: Andrew Holden (andrewholden1_at_[hidden])
Date: 2012-12-08 11:45:07

Philipp Kraus <philipp.kraus_at_[hidden]> wrote:

>Hello,
>
>I'm using boost::shared_ptr for using a C pointer. The ctor and all
>functions are called without any problem, but I have got a problem with
>the dtor.
>I need to call a C function on the dtor eg
>
>cptr_close( mypointer )
>
>How can I this used with boost::shared_ptr? I need the cptr_close call
>on the pointer member of the dtor on the shared_ptr.
>
>Thanks a lot
>
>Phil
>
>
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I would initialize the shared pointer like so:

boost::shared_ptr <MyType> ptr;

MyType *temp_ptr = cptr_open();  //Use a temporary pointer to avoid initializing the shared pointer with null.

if (temp_ptr)
    ptr.reset(temp_ptr, &cptr_close);
//Now discard temp_ptr