75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
/*
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Copyright (c) 2018 tevador
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This file is part of RandomX.
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RandomX is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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RandomX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with RandomX. If not, see<http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <chrono>
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#include <cstdint>
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class Stopwatch {
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public:
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Stopwatch(bool startNow = false) {
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reset();
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if (startNow) {
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start();
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}
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}
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void reset() {
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isRunning = false;
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elapsed = 0;
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}
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void start() {
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if (!isRunning) {
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startMark = std::chrono::high_resolution_clock::now();
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isRunning = true;
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}
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}
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void restart() {
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startMark = std::chrono::high_resolution_clock::now();
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isRunning = true;
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elapsed = 0;
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}
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void stop() {
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if (isRunning) {
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chrono_t endMark = std::chrono::high_resolution_clock::now();
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uint64_t ns = std::chrono::duration_cast<sw_unit>(endMark - startMark).count();
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elapsed += ns;
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isRunning = false;
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}
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}
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double getElapsed() const {
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return getElapsedNanosec() / 1e+9;
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}
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private:
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using chrono_t = std::chrono::high_resolution_clock::time_point;
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using sw_unit = std::chrono::nanoseconds;
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chrono_t startMark;
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uint64_t elapsed;
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bool isRunning;
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uint64_t getElapsedNanosec() const {
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uint64_t elns = elapsed;
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if (isRunning) {
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chrono_t endMark = std::chrono::high_resolution_clock::now();
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uint64_t ns = std::chrono::duration_cast<sw_unit>(endMark - startMark).count();
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elns += ns;
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}
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return elns;
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}
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}; |