wehub-resource-sync
85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
/* Copyright (c) 2021 PaddlePaddle Authors. 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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#pragma once
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#include "paddle/common/layout.h"
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#include "paddle/phi/common/backend.h"
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#include "paddle/phi/common/data_type.h"
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#include "paddle/phi/common/place.h"
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#include "paddle/phi/core/allocator.h"
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#include "paddle/phi/core/ddim.h"
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#include "paddle/phi/core/utils/type_registry.h"
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namespace phi {
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class TensorBase {
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public:
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virtual ~TensorBase() = default;
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/// \brief Returns the number of elements contained in tensor.
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/// \return The number of elements contained in tensor.
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virtual int64_t numel() const = 0;
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/// \brief Returns the dims of the tensor.
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/// \return The dims of the tensor.
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virtual const DDim& dims() const = 0;
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/// \brief Returns the data type of the tensor.
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/// \return The data type of the tensor.
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virtual DataType dtype() const = 0;
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/// \brief Returns the data layout of the tensor.
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/// \return The data layout of the tensor.
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virtual DataLayout layout() const = 0;
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/// \brief Returns the data place of the tensor.
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/// \return The data place of the tensor.
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virtual const Place& place() const = 0;
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/// \brief Test whether the metadata is valid.
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/// \return Whether the metadata is valid.
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virtual bool valid() const = 0;
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/// \brief Test whether the holder is created.
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/// \return Whether the holder is created.
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virtual bool has_allocation() const = 0;
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/// \brief Test whether the storage is allocated.
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/// \return Whether the storage is allocated.
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virtual bool initialized() const = 0;
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// TODO(Aurelius84): This interface is under intermediate state now.
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// We will remove DataType argument in the future. Please DO NOT
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// rely on Datatype too much when designing and implementing other features.
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/// \brief Allocate memory with requested size from allocator.
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/// \return The mutable data pointer value of type T.
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virtual void* AllocateFrom(Allocator* allocator,
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DataType dtype,
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size_t requested_size = 0,
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bool fake_alloc = false) = 0;
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/// \brief Return the type information of the derived class to support
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/// safely downcast in non-rtti environment.
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/// \return The type information of the derived class.
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TypeInfo<TensorBase> type_info() const { return type_info_; }
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private:
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template <typename T, typename U>
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friend class TypeInfoTraits;
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TypeInfo<TensorBase> type_info_{TypeInfo<TensorBase>::kUnknownType};
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};
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} // namespace phi
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