/*
* 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