-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday 16 January 2009 16:46 pm, Emil Dotchevski wrote:
Benchmarks alone don't mean much without understanding your use case. What are you trying to do, for which boost::make_shared's performance is inadequate?
Nothing, actually. I was writing some similar code and based it on boost/make_shared.hpp. I simply became curious if make_shared really was any faster than using the shared_ptr constructors and new. Normally, I try not to be an optimization nut, but from n2351, it is clear that performance optimization is a significant part of the rationale for make_shared existing. To quote n2351: "Besides convenience and style, such a function is also exception safe and considerably faster because it can use a single allocation for the object and its corresponding control block, eliminating a significant portion of shared_ptr's construction overhead. This function eliminates one of the major efficiency complaints about shared_ptr." So it seems reasonable to expect boost::make_shared to provide some observable performance benefit. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFJcQo85vihyNWuA4URAp5EAKDTvh71HzwrPRyNI5v4ChC2GNgGNgCg3CDP ZMWIDAkFVYTae6uDduFEiHo= =+ohB -----END PGP SIGNATURE-----