| // Copyright 2013 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. |
| |
| #ifndef BASE_TIMER_ELAPSED_TIMER_H_ |
| #define BASE_TIMER_ELAPSED_TIMER_H_ |
| |
| #include "base/base_export.h" |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| |
| namespace base { |
| |
| // A simple wrapper around TimeTicks::Now(). |
| class BASE_EXPORT ElapsedTimer { |
| public: |
| ElapsedTimer(); |
| ElapsedTimer(ElapsedTimer&& other); |
| |
| void operator=(ElapsedTimer&& other); |
| |
| // Returns the time elapsed since object construction. |
| TimeDelta Elapsed() const; |
| |
| // Returns the timestamp of the creation of this timer. |
| TimeTicks Begin() const { return begin_; } |
| |
| private: |
| TimeTicks begin_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ElapsedTimer); |
| }; |
| |
| // A simple wrapper around ThreadTicks::Now(). |
| class BASE_EXPORT ElapsedThreadTimer { |
| public: |
| ElapsedThreadTimer(); |
| |
| // Returns the ThreadTicks time elapsed since object construction. |
| // Only valid if |is_supported()| returns true, otherwise returns TimeDelta(). |
| TimeDelta Elapsed() const; |
| |
| bool is_supported() const { return is_supported_; } |
| |
| private: |
| const bool is_supported_; |
| const ThreadTicks begin_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ElapsedThreadTimer); |
| }; |
| |
| } // namespace base |
| |
| #endif // BASE_TIMER_ELAPSED_TIMER_H_ |