[Boost-users] Re: shared_ptr, intrusive_ptr ...

From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2005-05-15 09:25:49

> Date: Sun, 15 May 2005 12:00:55 +0100
> From: Jean-Fran?ois Brouillet <verec_at_[hidden]>
> Subject: [Boost-users] Re: shared_ptr, intrusive_ptr ...
> To: boost-users_at_[hidden]
> Message-ID: <A42134A2-8F76-4A80-956A-D0070056100F_at_[hidden]>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
> 
> On 2005-05-15 00:49:54 +0100, "Peter Dimov" <pdimov_at_[hidden]> said:
> 
> 
> Anyway, here's my revised snippet that satisfies all my criteria:
> --
> JFB
> 
> #include <iostream>
> 
> #include <boost/intrusive_ptr.hpp>
> 
> struct ObjectStruct {
>     int refCount ;
> 
>     ObjectStruct() : refCount(0) {
>         std::cout << std::hex << (int) this << " - I'm born" <<
> std::endl ;
>     }
> 
>     void    refer()   {   ++refCount ;    }
>     void    unrefer() {   if (--refCount == 0) delete this ; }
> 
>     virtual ~ObjectStruct() {
>         std::cout << std::hex << (int) this << " - I'm gone" <<
> std::endl ;
>     }
> } ;
> 
> void    intrusive_ptr_add_ref(ObjectStruct * p) {   p->refer() ;      }
> void    intrusive_ptr_release(ObjectStruct * p) {   p->unrefer() ;    }
> 

Are you going to make it thread-safe (or is that something you just
left out of the example?)?