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paddlepaddle--paddle/paddle/phi/kernels/funcs/tensor_to_string.h
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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <sstream>
#include "paddle/phi/backends/context_pool.h"
#include "paddle/phi/backends/cpu/cpu_context.h"
#include "paddle/phi/common/memory_utils.h"
#include "paddle/phi/core/dense_tensor.h"
#include "paddle/utils/string/string_helper.h"
namespace phi {
namespace funcs {
template <typename T>
static const std::vector<T> &ToVector(const std::vector<T> &vec) {
return vec;
}
template <typename T>
static std::vector<T> ToVector(const T *x,
size_t n,
const phi::Place &place UNUSED) {
#ifdef __NVCC__
if (place.GetType() == AllocationType::GPU) {
using CopyT = typename std::
conditional<std::is_same<T, bool>::value, uint8_t, T>::type;
std::vector<CopyT> cpu_x(n);
auto *dev_ctx =
static_cast<GPUContext *>(DeviceContextPool::Instance().Get(place));
memory_utils::Copy(
CPUPlace(), cpu_x.data(), place, x, n * sizeof(T), dev_ctx->stream());
dev_ctx->Wait();
return std::vector<T>(cpu_x.data(), cpu_x.data() + n);
}
#endif
return std::vector<T>(x, x + n);
}
template <typename T>
static std::vector<T> ToVector(const DenseTensor &src) {
if (!src.IsInitialized()) {
return {};
}
return ToVector(src.template data<T>(), src.numel(), src.place());
}
template <typename... Args>
static std::string FlattenToString(Args &&...args) {
const auto &vec = ToVector(std::forward<Args>(args)...);
return "[" + paddle::string::join_strings(vec, ',') + "]";
}
} // namespace funcs
} // namespace phi