Re: [Boost-users] Object pools?

Subject: Re: [Boost-users] Object pools?
From: Ryan McConnehey (mccorywork_at_[hidden])
Date: 2010-02-18 11:08:00

michele.caini_at_[hidden] wrote:
> Hi, of course, in my opinion pool has to manage objects life time. 
> However sharing objects with pool owner by shared ptr seems to be a 
> good idea, because pool still manages objects life time. 
You are correct, the objects given to the user are still controlled by 
the pool but by passing the shared_ptr to the user the pool only has to 
worry about those item in its direct control.  The downside to passing 
raw pointers to the user is the pool then has to keep track of which 
objects it has passed to the user and which objects are still 
available.  This is an extra level detail that the shared_ptr allows us 
to avoid.
> Using shared pointer also inside pool solves the problem, maybe. It is 
> correct?
I wasn't able to use the shared_ptr inside the pool.  When creating the 
shared_ptr, the destructor function expects to call a function using the 
raw pointer.  So the pool stores raw pointers but passes them to the 
user in a shared_ptr.

Ryan