http://snippets.dzone.com/posts Thu, 28 Aug 2008 18:01:14 GMT DZone Snippets: performance testing code http://snippets.dzone.com/posts/show/4254 These two bits of code can be used to record & output the execution time of a piece of code in microseconds. NOTE: The functions used here are only available on BSD-like systems (I think). <br /><code> <br />/* Put this line at the top of the file: */ <br />#include <sys/time.h> <br /> <br />/* Put this right before the code you want to time: */ <br />struct timeval timer_start, timer_end; <br />gettimeofday(&timer_start, NULL); <br /> <br />/* Put this right after the code you want to time: */ <br />gettimeofday(&timer_end, NULL); <br />double timer_spent = timer_end.tv_sec - timer_start.tv_sec + (timer_end.tv_usec - timer_start.tv_usec) / 1000000.0; <br />printf("Time spent: %.6f\n", timer_spent); <br /></code> Thu, 05 Jul 2007 03:27:35 GMT http://snippets.dzone.com/posts/show/4254 Minimiscience (Guildorn Tanaleth)