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// Copyright 2015, Tobias Hermann and the FunctionalPlus contributors.
// https://github.com/Dobiasd/FunctionalPlus
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#pragma once
#include <chrono>
namespace fplus
{
class stopwatch
{
public:
stopwatch() : beg_(clock::now()) {}
void reset() { beg_ = clock::now(); }
// time since creation or last reset in seconds
double elapsed() const {
return std::chrono::duration_cast<second>
(clock::now() - beg_).count(); }
private:
typedef std::chrono::high_resolution_clock clock;
typedef std::chrono::duration<double, std::ratio<1>> second;
std::chrono::time_point<clock> beg_;
};
} // namespace fplus
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