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// Copyright John Maddock 2016.
// Use, modification and distribution are subject to 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)
#ifndef BOOST_MATH_CUDA_STOPWATCH_HPP
#define BOOST_MATH_CUDA_STOPWATCH_HPP
#ifdef _MSC_VER
#pragma once
#endif
#include <chrono>
template <class Clock>
struct stopwatch
{
typedef typename Clock::duration duration;
stopwatch()
{
m_start = Clock::now();
}
double elapsed()
{
duration t = Clock::now() - m_start;
return std::chrono::duration_cast<std::chrono::duration<double>>(t).count();
}
void reset()
{
m_start = Clock::now();
}
private:
typename Clock::time_point m_start;
};
typedef stopwatch<std::chrono::high_resolution_clock> watch;
#endif
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