95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
//@HEADER
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// ************************************************************************
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//
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// Kokkos v. 4.0
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// Copyright (2022) National Technology & Engineering
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// Solutions of Sandia, LLC (NTESS).
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
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// See https://kokkos.org/LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//@HEADER
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#ifndef KOKKOS_TIMER_HPP
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#define KOKKOS_TIMER_HPP
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#ifndef KOKKOS_IMPL_PUBLIC_INCLUDE
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#define KOKKOS_IMPL_PUBLIC_INCLUDE
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#define KOKKOS_IMPL_PUBLIC_INCLUDE_NOTDEFINED_TIMER
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#endif
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#include <Kokkos_Macros.hpp>
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// gcc 10.3.0 with CUDA doesn't support std::chrono,
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// see https://github.com/kokkos/kokkos/issues/4334
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#if defined(KOKKOS_COMPILER_GNU) && (KOKKOS_COMPILER_GNU == 1030) && \
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defined(KOKKOS_COMPILER_NVCC)
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#include <sys/time.h>
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#else
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#include <chrono>
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#endif
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namespace Kokkos {
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/** \brief Time since construction */
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#if defined(KOKKOS_COMPILER_GNU) && (KOKKOS_COMPILER_GNU == 1030) && \
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defined(KOKKOS_COMPILER_NVCC)
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class Timer {
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private:
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struct timeval m_old;
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public:
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inline void reset() { gettimeofday(&m_old, nullptr); }
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inline ~Timer() = default;
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inline Timer() { reset(); }
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Timer(const Timer&) = delete;
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Timer& operator=(const Timer&) = delete;
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inline double seconds() const {
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struct timeval m_new;
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gettimeofday(&m_new, nullptr);
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return ((double)(m_new.tv_sec - m_old.tv_sec)) +
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((double)(m_new.tv_usec - m_old.tv_usec) * 1.0e-6);
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}
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};
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#else
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class Timer {
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private:
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std::chrono::high_resolution_clock::time_point m_old;
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public:
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inline void reset() { m_old = std::chrono::high_resolution_clock::now(); }
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inline ~Timer() = default;
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inline Timer() { reset(); }
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Timer(const Timer&);
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Timer& operator=(const Timer&);
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inline double seconds() const {
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std::chrono::high_resolution_clock::time_point m_new =
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std::chrono::high_resolution_clock::now();
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return std::chrono::duration_cast<std::chrono::duration<double> >(m_new -
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m_old)
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.count();
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}
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};
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#endif
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} // namespace Kokkos
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#ifdef KOKKOS_IMPL_PUBLIC_INCLUDE_NOTDEFINED_TIMER
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#undef KOKKOS_IMPL_PUBLIC_INCLUDE
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#undef KOKKOS_IMPL_PUBLIC_INCLUDE_NOTDEFINED_TIMER
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#endif
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#endif /* #ifndef KOKKOS_TIMER_HPP */
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