c++0x timing utility

time.cpp

#include <chrono>
#include <functional>

double time (std::function<void ()> fn) {
  using namespace std::chrono;
  high_resolution_clock::time_point start, end;
  start = high_resolution_clock::now();
  fn();
  end = high_resolution_clock::now();
  duration<double> span;
  return duration_cast<duration<double>>(end-start).count();
}

Usage.md

Compile with -std=c++0x.

double duration = time([](){
  do_some_heavy_stuff();
})