The following code:

#include <iostream>
#include <boost/timer.hpp>
#include <unistd.h>

int main()
{

  boost::timer t;

  sleep(1);
  std::cout << t.elapsed() << std::endl;
  t.restart();
  sleep(3);
  std::cout << t.elapsed() << std::endl;

  return(0);
}

Returns (compiled with gcc 4.2.4 on Ubuntu Linux 8.04 using boost 1.36):

andre@andre-desktop:~/test$ ./timer_test
0
0

Is this result expected? Why?
There is another timer implementation that works with sleep?

[]'s
Andre Paim Lemos