30 Apr
2011
30 Apr
'11
3:05 p.m.
On 30/04/2011 02:38, Phil Bouchard wrote:
On 4/29/2011 3:13 PM, Phil Bouchard wrote:
Hi,
I just disabled the constructor and the assignment operator having a raw pointers as a parameter and I added the make_block factory function. We can see it in action in the following example: https://svn.boost.org/svn/boost/sandbox/block_ptr/libs/smart_ptr/example/blo...
It looks like the performance was better using operator new because of the lack of the need of temporaries:
time of new block: 0.144u 0.016s 0:00.16 93.7%
time of make_block: 0.328u 0.012s 0:00.34 97.0%
Any thoughts?
There is no difference between block_ptr<T> a = make_block<T>(whatever); and block_ptr<T> a(new block<T>(whatever)); Your temporaries in question are removed by NRVO.