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36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
/* Copyright 2025 SGLang Team. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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// Adapted from: https://github.com/vllm-project/vllm/blob/main/csrc/ops.h
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#include <ATen/ATen.h>
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#include <ATen/Tensor.h>
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#include <vector>
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at::Tensor weak_ref_tensor(const at::Tensor& tensor) {
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TORCH_CHECK(tensor.is_cuda(), "weak_ref_tensor expects a CUDA tensor");
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void* data_ptr = tensor.data_ptr();
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std::vector<int64_t> sizes = tensor.sizes().vec();
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std::vector<int64_t> strides = tensor.strides().vec();
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auto options = tensor.options();
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auto new_tensor = at::from_blob(data_ptr, sizes, strides, options);
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return new_tensor;
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}
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