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54 lines
1.5 KiB
54 lines
1.5 KiB
7 months ago
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/*
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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 NETDUTILS_STOPWATCH_H
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#define NETDUTILS_STOPWATCH_H
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#include <chrono>
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namespace android {
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namespace netdutils {
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class Stopwatch {
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private:
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using clock = std::chrono::steady_clock;
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using time_point = std::chrono::time_point<clock>;
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public:
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Stopwatch() : mStart(clock::now()) {}
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virtual ~Stopwatch() = default;
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int64_t timeTakenUs() const { return getElapsedUs(clock::now()); }
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int64_t getTimeAndResetUs() {
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const auto& now = clock::now();
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int64_t elapsed = getElapsedUs(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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time_point mStart;
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int64_t getElapsedUs(const time_point& now) const {
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return (std::chrono::duration_cast<std::chrono::microseconds>(now - mStart)).count();
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}
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};
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} // namespace netdutils
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} // namespace android
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#endif // NETDUTILS_STOPWATCH_H
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