Re: Loki SmartPtr questions

From: rogeeff (rogeeff_at_[hidden])
Date: 2002-01-14 14:36:31

--- In boost_at_y..., Beman Dawes <bdawes_at_a...> wrote:
> At 11:06 AM 1/14/2002, rogeeff wrote:
> 
>  >Ideally Storage Policy manages HOW to allocate/deallocate 
resource,
>  >while Ownership policy manages WHEN to do so.
>  >
>  >If we will stick to this definition, we will never need to
>  >interpolicy (Storage-Ownership at least) communication.
> 
> They need some communication, although it may be indirect via the 
framework 
> class.  Thus OwnershipPolicy::Release() tells the framework (via 
bool 
> return) that StoragePolicy::Destroy() should be called.
> 
> While StoragePolicy and OwnershipPolicy are mostly independent and 
> orthogonal, it isn't quite 100%.
> 
> --Beman

That's obvious, since they manage the same event.  Most of the 
policies that compose a compound component will "comunicate" though 
that component. Let's say that policies are communicating iff policy 
A implementation uses members of Policy B or vice versa, cause namely 
presence/absence of such 'direct' communication is one of the most 
important issues discussed.

Do you agree with me that if we manage to define Ownership and Strage 
policies in above terms we should be able to eliminate direct 
communication?

Gennadiy.