LXR linux/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
  11static 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
  28int main(void)
  29{
  30        return test_harness(test_gettimeofday, "gettimeofday");
  31}
  32