tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}