| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef NETD_INCLUDE_STOPWATCH_H |
| #define NETD_INCLUDE_STOPWATCH_H |
| |
| #include <chrono> |
| |
| class Stopwatch { |
| public: |
| Stopwatch() : mStart(clock::now()) {} |
| |
| virtual ~Stopwatch() {}; |
| |
| float timeTaken() const { |
| return getElapsed(clock::now()); |
| } |
| |
| float getTimeAndReset() { |
| const auto& now = clock::now(); |
| float elapsed = getElapsed(now); |
| mStart = now; |
| return elapsed; |
| } |
| |
| private: |
| typedef std::chrono::steady_clock clock; |
| typedef std::chrono::time_point<clock> time_point; |
| time_point mStart; |
| |
| float getElapsed(const time_point& now) const { |
| using ms = std::chrono::duration<float, std::ratio<1, 1000>>; |
| return (std::chrono::duration_cast<ms>(now - mStart)).count(); |
| } |
| }; |
| |
| #endif // NETD_INCLUDE_STOPWATCH_H |