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