base/timer/elapsed_timer.h

   1 // Copyright 2013 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 #ifndef BASE_TIMER_ELAPSED_TIMER_H_
   6 #define BASE_TIMER_ELAPSED_TIMER_H_
   7
   8 #include "base/base_export.h"
   9 #include "base/macros.h"
  10 #include "base/time/time.h"
  11
  12 namespace base {
  13
  14 // A simple wrapper around TimeTicks::Now().
  15 class BASE_EXPORT ElapsedTimer {
  16  public:
  17   ElapsedTimer();
  18
  19   // Returns the time elapsed since object construction.
  20   TimeDelta Elapsed() const;
  21
  22  private:
  23   TimeTicks begin_;
  24
  25   DISALLOW_COPY_AND_ASSIGN(ElapsedTimer);
  26 };
  27
  28 }  // namespace base
  29
  30 #endif  // BASE_TIMER_ELAPSED_TIMER_H_