Kokkos Core Kernels Package Version of the Day
Kokkos_Timer.hpp
1/*
2//@HEADER
3// ************************************************************************
4//
5// Kokkos v. 3.0
6// Copyright (2020) National Technology & Engineering
7// Solutions of Sandia, LLC (NTESS).
8//
9// Under the terms of Contract DE-NA0003525 with NTESS,
10// the U.S. Government retains certain rights in this software.
11//
12// Redistribution and use in source and binary forms, with or without
13// modification, are permitted provided that the following conditions are
14// met:
15//
16// 1. Redistributions of source code must retain the above copyright
17// notice, this list of conditions and the following disclaimer.
18//
19// 2. Redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution.
22//
23// 3. Neither the name of the Corporation nor the names of the
24// contributors may be used to endorse or promote products derived from
25// this software without specific prior written permission.
26//
27// THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
28// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
31// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38//
39// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
40//
41// ************************************************************************
42//@HEADER
43*/
44
45#ifndef KOKKOS_TIMER_HPP
46#define KOKKOS_TIMER_HPP
47
48#include <Kokkos_Macros.hpp>
49#include <chrono>
50
51namespace Kokkos {
52
55class Timer {
56 private:
57 std::chrono::high_resolution_clock::time_point m_old;
58 Timer(const Timer&);
59 Timer& operator=(const Timer&);
60
61 public:
62 inline void reset() { m_old = std::chrono::high_resolution_clock::now(); }
63
64 inline ~Timer() = default;
65
66 inline Timer() { reset(); }
67
68 inline double seconds() const {
69 std::chrono::high_resolution_clock::time_point m_new =
70 std::chrono::high_resolution_clock::now();
71 return std::chrono::duration_cast<std::chrono::duration<double>>(m_new -
72 m_old)
73 .count();
74 }
75};
76
77} // namespace Kokkos
78
79#endif /* #ifndef KOKKOS_TIMER_HPP */
Time since construction.