[boost] [function] timing trivia

From: Matthew Hurd (matt_at_[hidden])
Date: 2004-02-11 22:08:07

Just a note to say thanks for boost::function ;-)

Just completed some timings of the cost of a boost function call using a
boost::function<void (void)> and a raw function pointer versus inlining the
function's code directly into the source.

For my circumstances (your mileage may vary):
        Calling via raw function pointer = 314  microseconds +/- 1
        Calling via boost function variable = 328 microseconds +/- 1

Only 14 microseconds of difference.  Nice work, I was expecting much more.

Regards,

Matt Hurd.

Note:  Optimised VC7.1 output, winXP 1a, Athlon 2800+ (2.09GHz)