[boost] Re: [policy_ptr]std_ptrs.hpp's include target missing & incomplete shared_ptr emulation

From: David B. Held (dheld_at_[hidden])
Date: 2005-05-05 17:33:22

Larry Evans wrote:
> On 05/04/2005 05:08 PM, Larry Evans wrote:
> [snip]
> 
>>
>> However, in that file, the shared_storage class, contains:
>>
>>         detail::shared_count count_;
>>
>> IOW, count_, unlike that in shared_ptr, contains no information
>> about the type of pointee_; hence, I can't understand how policy_ptr's
>> smart_ptr<...>, can emulate boost's shared_ptr with existing policies.
>>
>> What have I missed?
> 
> I missed that shared_count takes checked_deleter<U>() in:
> 
>         template <typename U>
>         explicit shared_storage(U* p)
>         : pointee_(p), count_(p, checked_deleter<U>(), p)
> 
> which does contain information about the pointee_.  OTOH, it
> also has an error: 3 args instead of 2.  This, as well as
> other errors, are corrected in the obvious zip file at:
> 
> http://boost-sandbox.sourceforge.net/vault/index.php?&direction=0&order=&directory=cppljevans 
> 
> 
> I'll be happy to upload these to the sandbox with David's permission;
> however, I've not been able to contact him for several days :(

Go ahead and check in your changes.  I won't be able to review them
for a while though.

Dave