Boost logo

Boost :

Subject: Re: [boost] [Block Pointer] benchmark
From: Phil Bouchard (philippe_at_[hidden])
Date: 2011-05-24 19:52:00

On 5/24/2011 4:07 PM, Nevin Liber wrote:
> Your claim is " It is a fast as the popular smart pointer *
> boost::shared_ptr<T>*". Yet, in single-threaded code and shared_ptr using
> new instead of make_shared, block_ptr still takes 3.3x as long as
> shared_ptr.
> That is *a lot* of overhead...

I just tested it using make_shared & make_block and I get:
auto_ptr: 11109841 ns
shared_ptr: 21215277 ns
block_ptr: 143637475 ns

auto_ptr 4583447 ns
shared_ptr: 10675000 ns
block_ptr: 67152785 ns

FYI make_shared is slower than new because of the temporary it creates.
  If people what speed they should stick to operator new in all cases.


Boost list run by bdawes at, gregod at, cpdaniel at, john at