Re: [boost] [xint] Fourth release, requesting preliminary review again

Subject: Re: [boost] [xint] Fourth release, requesting preliminary review again
From: David Abrahams (dave_at_[hidden])
Date: 2010-06-10 17:06:51

At Thu, 10 Jun 2010 13:15:00 +0100,
Giovanni Piero Deretta wrote:
> 
> > I assume you wanted to use stack-based memory for speed, but due to the
> > above, it would likely be slower than the equivalent heap-based integer.
> > Especially with a good caching allocator.
> >
> 
> In my experience, stack allocated memory easily beat heap allocation
> even for large buffer sizes. In the past I have used a fixed string
> type with a ridiculously large size for some specialized application
> and it outperformed the heap based string type it replaced (I didn't
> try to manually optimize copies away).

I assume that we're going to be using the infamous “small string
optimization” at some point, which amounts to something like

   boost::variant< unique_ptr<char[]>, boost::array<char, 6> >

right?

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com