Re: [Boost-users] [signals] connection::add_tracked() proposal

From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2007-02-21 13:04:02

On 2/21/07, Frank Mori Hess <frank.hess_at_[hidden]> wrote:
>
> I'd like to propose we add an add_tracked() function to the connection
> object.  This would allow an arbitrary shared_ptr/weak_ptr to be added to
> the list of objects tracked for the slot.  The justification is to allow
> for situations where an object needed by the slot is not directly owned by
> a shared_ptr, or doesn't directly correspond to an argument of the bound
> function.  For example, the bound argument might be contained inside
> another object which is in turn managed by a shared_ptr.  We could
> actually dump boost::track() entirely if we wanted, if we have
> add_tracked().
>
> - --
> Frank

So, for example, foo is what we want to track, but bar (somehow inside
of foo) is what we want to bind/call?  Shouldn't that all happen on
the same function call:

signal.connect(bind(bar, func), foo)   // pass foo in as the object
that guarantees bar's lifetime.

So a 'guarantor' parameter.

Is that what you mean?

If so, I'd like that to be part of the conenct as opposed to a
separate function.
Tony