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56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
/*
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* Copyright 2021 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 with the LLVM exception
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* (the "License"); you may not use this file except in compliance with
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* the License.
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*
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* You may obtain a copy of the License at
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*
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* http://llvm.org/foundation/relicensing/LICENSE.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <nvbench/types.cuh>
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#include <chrono>
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namespace nvbench
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{
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struct cpu_timer
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{
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__forceinline__ cpu_timer() = default;
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// move-only
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cpu_timer(const cpu_timer &) = delete;
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cpu_timer(cpu_timer &&) = default;
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cpu_timer &operator=(const cpu_timer &) = delete;
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cpu_timer &operator=(cpu_timer &&) = default;
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__forceinline__ void start() { m_start = std::chrono::high_resolution_clock::now(); }
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__forceinline__ void stop() { m_stop = std::chrono::high_resolution_clock::now(); }
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// In seconds:
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[[nodiscard]] __forceinline__ nvbench::float64_t get_duration()
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{
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const auto duration = m_stop - m_start;
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const auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(duration).count();
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return static_cast<nvbench::float64_t>(ns) * (1e-9);
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}
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private:
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std::chrono::high_resolution_clock::time_point m_start;
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std::chrono::high_resolution_clock::time_point m_stop;
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};
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} // namespace nvbench
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