Measuring execution time of a call to system() in C++

Question

I have found some code on measuring execution time here http://www.dreamincode.net/forums/index.php?showtopic=24685

However, it does not seem to work for calls to sy

Answer 1

Have you considered using gettimeofday?

struct timeval tv;
struct timeval start_tv;

gettimeofday(&start_tv, NULL);

system(something);

double elapsed = 0.0;

gettimeofday(&tv, NULL);
elapsed = (tv.tv_sec - start_tv.tv_sec) +
  (tv.tv_usec - start_tv.tv_usec) / 1000000.0;