1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/sys_info.h"
6
7#include "base/time/time.h"
8
9namespace base {
10
11// static
12int64 SysInfo::Uptime() {
13  // This code relies on an implementation detail of TimeTicks::Now() - that
14  // its return value happens to coincide with the system uptime value in
15  // microseconds, on Win/Mac/iOS/Linux/ChromeOS and Android.
16  int64 uptime_in_microseconds = TimeTicks::Now().ToInternalValue();
17  return uptime_in_microseconds / 1000;
18}
19
20}  // namespace base
21