On Dec 2, 2004, at 3:03 PM, Fredrik Blomqvist wrote:
Perhaps this could be of some interest in this discussion. http://www.codeproject.com/cpp/FastDelegate.asp The article talks about low-level optimization of delegates on a wide range of platforms.
We have to be a little careful here, because the author is using some (really neat!) non-portable tricks.
To quote: "Initially, I used boost::function, but I found that the memory allocation for the delegates was consuming over a third of the entire program running time!"
Regards // Fredrik Blomqvist
Yes, this is a good point... one common case we had previously talked about optimizing is everything related to: function<int(int)> f(boost::bind(&X::m, x_ptr, _1)); Since most slots just bind an object to the member pointer, being able to store these in a function<> instance without allocating memory could be a big win. I know several people have asked for it on more than one occasion: the problem is implementing it portably (in a practical sense; making it standard C++ is easy). Doug