text: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #include "base/sys_info.h"
  
  #include "base/time/time.h"
  
  namespace base {
  
  // static
  int64 SysInfo::Uptime() {
    // This code relies on an implementation detail of TimeTicks::Now() - that
    // its return value happens to coincide with the system uptime value in
    // microseconds, on Win/Mac/iOS/Linux/ChromeOS and Android.
    int64 uptime_in_microseconds = TimeTicks::Now().ToInternalValue();
    return uptime_in_microseconds / 1000;
  }
  
  }  // namespace base
  