mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* Copyright (c) 2024, 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/assert.h"
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#include "tensorrt_llm/common/config.h"
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#include <cstdint>
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#include <cuda_runtime.h>
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TRTLLM_NAMESPACE_BEGIN
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namespace kernels
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{
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class KVCacheIndex
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{
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public:
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using UnderlyingType = std::int32_t;
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// Flag indicating KVCacheIndex refers to secondary pool
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static constexpr UnderlyingType kSecondaryPoolFlag = static_cast<UnderlyingType>(1)
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<< (8 * sizeof(UnderlyingType) - 1);
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explicit KVCacheIndex(UnderlyingType value, bool isSecondary = false)
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: value{isSecondary ? value | kSecondaryPoolFlag : value}
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{
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TLLM_CHECK_DEBUG(value >= 0);
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}
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__host__ __device__ [[nodiscard]] UnderlyingType get() const
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{
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return value & (~kSecondaryPoolFlag);
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}
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__host__ __device__ [[nodiscard]] bool isPrimary() const
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{
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return (value & kSecondaryPoolFlag) == 0;
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}
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private:
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UnderlyingType value;
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};
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} // namespace kernels
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TRTLLM_NAMESPACE_END
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