mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
/*
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* Copyright (c) 2025, 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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#include "mcastDevMemUtils.h"
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#include "tensorrt_llm/common/config.h"
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#include <unordered_map>
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using McastDeviceMemory = ::tensorrt_llm::runtime::McastDeviceMemory;
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TRTLLM_NAMESPACE_BEGIN
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namespace common
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{
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namespace
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{
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class McastDevMemBufferRegistry
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{
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public:
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McastDevMemBufferRegistry(McastDevMemBufferRegistry const&) = delete;
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McastDevMemBufferRegistry& operator=(McastDevMemBufferRegistry const&) = delete;
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static McastDevMemBufferRegistry& getInstance()
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{
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static McastDevMemBufferRegistry instance;
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return instance;
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}
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void registerBuffer(void* ptr, McastDeviceMemory* buf)
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{
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_ptr_to_buf[ptr] = buf;
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}
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void unregisterBuffer(McastDeviceMemory* buf)
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{
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// Potential performance issue! Can use erase-if when we adopt C++20
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// Remove mappings in the table
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for (auto it = _ptr_to_buf.begin(); it != _ptr_to_buf.end();)
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{
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if (it->second == buf)
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{
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it = _ptr_to_buf.erase(it);
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}
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else
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{
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++it;
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}
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}
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}
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McastDeviceMemory* findBuffer(void* ptr)
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{
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auto it = _ptr_to_buf.find(ptr);
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return it == _ptr_to_buf.end() ? nullptr : it->second;
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}
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private:
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McastDevMemBufferRegistry() = default;
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~McastDevMemBufferRegistry() = default;
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std::unordered_map<void*, McastDeviceMemory*> _ptr_to_buf;
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};
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} // namespace
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void registerMcastDevMemBuffer(void* ptr, McastDeviceMemory* buf)
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{
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McastDevMemBufferRegistry::getInstance().registerBuffer(ptr, buf);
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}
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void unregisterMcastDevMemBuffer(McastDeviceMemory* buf)
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{
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McastDevMemBufferRegistry::getInstance().unregisterBuffer(buf);
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}
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McastDeviceMemory* findMcastDevMemBuffer(void* ptr)
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{
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return McastDevMemBufferRegistry::getInstance().findBuffer(ptr);
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}
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} // namespace common
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TRTLLM_NAMESPACE_END
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