1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef NETD_INCLUDE_STOPWATCH_H 18 #define NETD_INCLUDE_STOPWATCH_H 19 20 #include <chrono> 21 22 class Stopwatch { 23 public: Stopwatch()24 Stopwatch() : mStart(std::chrono::steady_clock::now()) {} ~Stopwatch()25 virtual ~Stopwatch() {}; 26 timeTaken()27 float timeTaken() const { 28 using ms = std::chrono::duration<float, std::ratio<1, 1000>>; 29 return (std::chrono::duration_cast<ms>( 30 std::chrono::steady_clock::now() - mStart)).count(); 31 } 32 33 private: 34 std::chrono::time_point<std::chrono::steady_clock> mStart; 35 }; 36 37 #endif // NETD_INCLUDE_STOPWATCH_H 38