Re: [Boost-users] make_shared and custom deleter

Subject: Re: [Boost-users] make_shared and custom deleter
From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2009-05-28 10:48:22

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On Wednesday 27 May 2009, Dominique Devienne wrote:
> I was thinking of using the new make_shared, but I'm already using a
> custom deleter (shared instances have private destructora and declare
> the custom deleter as a friend, and new instances are returned wrapped
> in shared_ptr, thus no explicit new or delete should be possible).
>
> Looking at make_shared, I can't see a way to use both at the same
> time. Am I out of luck? Thanks, --DD

You can't, not even with boost::allocate_shared since it doesn't use the 
allocator for in-place construction.  See ticket #2481:

https://svn.boost.org/trac/boost/ticket/2481

In theory you should be able to use std::allocate_shared in c++0x mode if your 
compiler provides it.  Define your own allocator (a bit of a pain) and make 
it a friend of your class.  Then add a static factory function to your class 
with calls allocate_shared with your friend allocator.
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