Re: [Boost-users] [boost-users] [bind][function] - too many copies

Subject: Re: [Boost-users] [boost-users] [bind][function] - too many copies
From: Christian Schladetsch (christian.schladetsch_at_[hidden])
Date: 2010-10-07 11:53:48

With such a hefty and obnoxious signature, this is my response.

On Fri, Oct 8, 2010 at 1:53 AM, Lorimer, Stephen
<stephen.lorimer_at_[hidden]>wrote:

>  For a given member function of the form void foo::f0(), passing this to
> boost bind results in the class instance being copied 7 times.
>
>
>
> Storing the result of bind in boost function incurs another 11 copies
>
>
>
> (code and results are here: http://boost.codepad.org/6jBmoKuj)
>
>
>
> Using tr1::bind and function has slightly better results, but still not
> ideal: Doing just tr1::bind results in the class instance being copied 4
> times.
>
>
>
> Storing the result of bind in tr1 function incurs another 3 copies
>
>
>
> (code and results are here: http://boost.codepad.org/w1EV6JBY)
>
>
>
> Am I right in saying this is because boost::bind uses normal templates
> while tr1::bind uses variadic templates?
>
>
>
> Either way this is not very efficient. Is there a way to improve this?
>  ------------------------------
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