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

DEFINITIONS

1. test_gettimeofday
2. main

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2015, Anton Blanchard, IBM Corp.
   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 }