tools/testing/selftests/powerpc/benchmarks/gettimeofday.c

   1 /*
   2  * Copyright 2015, Anton Blanchard, IBM Corp.
   3  * Licensed under GPLv2.
   4  */
   5
   6 #include <sys/time.h>
   7 #include <stdio.h>
   8
   9 #include "utils.h"
  10
  11 static int test_gettimeofday(void)
  12 {
  13         int i;
  14
  15         struct timeval tv_start, tv_end;
  16
  17         gettimeofday(&tv_start, NULL);
  18
  19         for(i = 0; i < 100000000; i++) {
  20                 gettimeofday(&tv_end, NULL);
  21         }
  22
  23         printf("time = %.6f\n", tv_end.tv_sec - tv_start.tv_sec + (tv_end.tv_usec - tv_start.tv_usec) * 1e-6);
  24
  25         return 0;
  26 }
  27
  28 int main(void)
  29 {
  30         return test_harness(test_gettimeofday, "gettimeofday");
  31 }