And heh, Spirit is completely inlined except for the call to boost::spirit::qi::detail::extract_int<int,10,1,-1,etc... However that function is only called the very first time that function is called. Remember that Spirit increments the passed in iterator, so all the start iterators in that vector ended up being incremented to be equal to the last iterator. :p
When you write the above, do you mean ** -> my change
However that function is only called the very first time *qi::parse* is called. Remember that Spirit increments the passed in iterator, so
In other words only the first call does anything - repeated calls to qi::parse do nothing because the iterator is already at the end? Good catch.
I change the wrap_qi_parse function to this (introduced a temporary so the temporary is incremented instead of the thing you have stored in the vector): void wrap_qi_parse() { for (int i = 0; i < BUFFER_SIZE; ++i) { char const *iter = f[i]; qi::parse(iter, l[i], int_, v[i]); }
}
When I compile and run the tests now, I get this: initializing input strings... Calibrating overhead......done Timer overhead (t_c) ~= : 12 Jitter ~= : 8.43769e-015 qi_parse vs atoi : 170.429 170.438 170.482% faster. qi_parse vs strtol : 167.589 167.601 167.668% faster. strtol vs atoi : 1.04669 1.05746 1.06165% faster. qi_parse vs qi_parse : 0 0 0% faster.
Checking that the results are correct... atoi is behaving itself! strtol is behaving itself! qi is behaving itself!
Good stuff. Thanks. I might just re-jig that to try and make use of boost::bind instead of that bad roll-your-own wrapper function. What's needed is a 'fire and forget' wrapping technique that can be applied to arbitrary functions and still give sensible answers.
That is a *lot* more reasonable, although Spirit is still most definitely faster then the built-in functions. :)
That's good though - one up for Boost!
Heh, what do you know, my shut down brain still had some living brain cells. I have actually found that I, oddly, do my best debugging when really tired, at least when I was younger, guess I still do. :)
It's amazing what the promise of imminent sleep can do to motivate a battered cerebral cortex. It's only playing along because it knows it's the only way it'll get to rest! -ed