mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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129 lines
3.2 KiB
C++
129 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021-2023, NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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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 "tensorrt_llm/common/config.h"
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#include <functional>
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#include <numeric>
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#include <optional>
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#include <sstream>
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TRTLLM_NAMESPACE_BEGIN
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namespace common::stl_utils
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{
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template <typename TInputIt, typename TOutputIt, typename TBinOp>
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constexpr TOutputIt basicInclusiveScan(TInputIt first, TInputIt last, TOutputIt dFirst, TBinOp op)
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{
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if (first != last)
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{
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auto val = *first;
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while (true)
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{
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*dFirst = val;
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++dFirst;
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++first;
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if (first == last)
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{
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break;
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}
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val = op(std::move(val), *first);
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}
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}
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return dFirst;
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}
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template <typename TInputIt, typename TOutputIt>
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constexpr TOutputIt inclusiveScan(TInputIt first, TInputIt last, TOutputIt dFirst)
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{
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#if defined(__GNUC__) && __GNUC__ <= 8
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return basicInclusiveScan(first, last, dFirst, std::plus<>{});
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#else
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return std::inclusive_scan(first, last, dFirst);
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#endif
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}
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template <typename TInputIt, typename TOutputIt, typename T, typename TBinOp>
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constexpr TOutputIt basicExclusiveScan(TInputIt first, TInputIt last, TOutputIt dFirst, T init, TBinOp op)
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{
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if (first != last)
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{
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while (true)
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{
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T tmp{op(init, *first)};
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*dFirst = init;
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++dFirst;
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++first;
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if (first == last)
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{
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break;
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}
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init = std::move(tmp);
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}
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}
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return dFirst;
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}
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template <typename TInputIt, typename TOutputIt, typename T>
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constexpr TOutputIt exclusiveScan(TInputIt first, TInputIt last, TOutputIt dFirst, T init)
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{
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#if defined(__GNUC__) && __GNUC__ <= 8
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return basicExclusiveScan(first, last, dFirst, std::move(init), std::plus<>{});
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#else
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return std::exclusive_scan(first, last, dFirst, std::move(init));
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#endif
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}
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template <typename T, typename = void>
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struct HasOperatorOutput : std::false_type
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{
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};
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template <typename T>
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struct HasOperatorOutput<T, std::void_t<decltype((std::declval<std::ostream&>() << std::declval<T>()))>>
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: std::true_type
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{
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};
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template <typename T>
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std::string toString(T const& t, typename std::enable_if_t<HasOperatorOutput<T>::value, int> = 0)
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{
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std::ostringstream oss;
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oss << t;
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return oss.str();
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}
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template <typename T>
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std::string toString(std::optional<T> const& t, typename std::enable_if_t<HasOperatorOutput<T>::value, int> = 0)
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{
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std::ostringstream oss;
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if (t)
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{
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oss << t.value();
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}
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else
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{
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oss << "None";
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}
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return oss.str();
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}
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} // namespace common::stl_utils
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TRTLLM_NAMESPACE_END
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