telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2017 Arm Ltd. All rights reserved. |
David Beck | ecb56cd | 2018-09-05 12:52:57 +0100 | [diff] [blame] | 3 | // SPDX-License-Identifier: MIT |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 4 | // |
| 5 | #pragma once |
David Beck | 0dbe0ee | 2018-09-24 15:59:27 +0100 | [diff] [blame] | 6 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 7 | #include "CpuTensorHandleFwd.hpp" |
David Beck | 0dbe0ee | 2018-09-24 15:59:27 +0100 | [diff] [blame] | 8 | #include <armnn/TypesUtils.hpp> |
| 9 | #include <backends/OutputHandler.hpp> |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 10 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 11 | #include <algorithm> |
| 12 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 13 | namespace armnn |
| 14 | { |
| 15 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 16 | // Abstract tensor handles wrapping a CPU-readable region of memory, interpreting it as tensor data. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 17 | class ConstCpuTensorHandle : public ITensorHandle |
| 18 | { |
| 19 | public: |
| 20 | template <typename T> |
| 21 | const T* GetConstTensor() const |
| 22 | { |
| 23 | BOOST_ASSERT(GetTensorInfo().GetDataType() == GetDataType<T>()); |
| 24 | return reinterpret_cast<const T*>(m_Memory); |
| 25 | } |
| 26 | |
| 27 | const TensorInfo& GetTensorInfo() const |
| 28 | { |
| 29 | return m_TensorInfo; |
| 30 | } |
| 31 | |
| 32 | virtual ITensorHandle::Type GetType() const override |
| 33 | { |
| 34 | return ITensorHandle::Cpu; |
| 35 | } |
| 36 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 37 | virtual void Manage() override {} |
| 38 | |
| 39 | virtual ITensorHandle* GetParent() const override { return nullptr; } |
| 40 | |
| 41 | virtual const void* Map(bool /* blocking = true */) const override { return m_Memory; } |
| 42 | virtual void Unmap() const override {} |
| 43 | |
| 44 | TensorShape GetStrides() const override |
| 45 | { |
| 46 | TensorShape shape(m_TensorInfo.GetShape()); |
| 47 | auto size = GetDataTypeSize(m_TensorInfo.GetDataType()); |
| 48 | auto runningSize = size; |
| 49 | std::vector<unsigned int> strides(shape.GetNumDimensions()); |
| 50 | auto lastIdx = shape.GetNumDimensions()-1; |
| 51 | for (unsigned int i=0; i < lastIdx ; i++) |
| 52 | { |
| 53 | strides[lastIdx-i] = runningSize; |
| 54 | runningSize *= shape[lastIdx-i]; |
| 55 | } |
| 56 | strides[0] = runningSize; |
| 57 | return TensorShape(shape.GetNumDimensions(), strides.data()); |
| 58 | } |
| 59 | TensorShape GetShape() const override { return m_TensorInfo.GetShape(); } |
| 60 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 61 | protected: |
| 62 | ConstCpuTensorHandle(const TensorInfo& tensorInfo); |
| 63 | |
| 64 | void SetConstMemory(const void* mem) { m_Memory = mem; } |
| 65 | |
| 66 | private: |
| 67 | ConstCpuTensorHandle(const ConstCpuTensorHandle& other) = delete; |
| 68 | ConstCpuTensorHandle& operator=(const ConstCpuTensorHandle& other) = delete; |
| 69 | |
| 70 | TensorInfo m_TensorInfo; |
| 71 | const void* m_Memory; |
| 72 | }; |
| 73 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 74 | // Abstract specialization of ConstCpuTensorHandle that allows write access to the same data. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 75 | class CpuTensorHandle : public ConstCpuTensorHandle |
| 76 | { |
| 77 | public: |
| 78 | template <typename T> |
| 79 | T* GetTensor() const |
| 80 | { |
| 81 | BOOST_ASSERT(GetTensorInfo().GetDataType() == GetDataType<T>()); |
| 82 | return reinterpret_cast<T*>(m_MutableMemory); |
| 83 | } |
| 84 | |
| 85 | protected: |
| 86 | CpuTensorHandle(const TensorInfo& tensorInfo); |
| 87 | |
| 88 | void SetMemory(void* mem) |
| 89 | { |
| 90 | m_MutableMemory = mem; |
| 91 | SetConstMemory(m_MutableMemory); |
| 92 | } |
| 93 | |
| 94 | private: |
| 95 | |
| 96 | CpuTensorHandle(const CpuTensorHandle& other) = delete; |
| 97 | CpuTensorHandle& operator=(const CpuTensorHandle& other) = delete; |
| 98 | void* m_MutableMemory; |
| 99 | }; |
| 100 | |
| 101 | // A CpuTensorHandle that owns the wrapped memory region. |
| 102 | class ScopedCpuTensorHandle : public CpuTensorHandle |
| 103 | { |
| 104 | public: |
| 105 | explicit ScopedCpuTensorHandle(const TensorInfo& tensorInfo); |
| 106 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 107 | // Copies contents from Tensor. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 108 | explicit ScopedCpuTensorHandle(const ConstTensor& tensor); |
| 109 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 110 | // Copies contents from ConstCpuTensorHandle |
| 111 | explicit ScopedCpuTensorHandle(const ConstCpuTensorHandle& tensorHandle); |
| 112 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 113 | ScopedCpuTensorHandle(const ScopedCpuTensorHandle& other); |
| 114 | ScopedCpuTensorHandle& operator=(const ScopedCpuTensorHandle& other); |
| 115 | ~ScopedCpuTensorHandle(); |
| 116 | |
| 117 | virtual void Allocate() override; |
| 118 | |
| 119 | private: |
| 120 | void CopyFrom(const ScopedCpuTensorHandle& other); |
| 121 | void CopyFrom(const void* srcMemory, unsigned int numBytes); |
| 122 | }; |
| 123 | |
| 124 | // A CpuTensorHandle that wraps an already allocated memory region. |
| 125 | // |
| 126 | // Clients must make sure the passed in memory region stays alive for the lifetime of |
| 127 | // the PassthroughCpuTensorHandle instance. |
| 128 | // |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 129 | // Note there is no polymorphism to/from ConstPassthroughCpuTensorHandle. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 130 | class PassthroughCpuTensorHandle : public CpuTensorHandle |
| 131 | { |
| 132 | public: |
| 133 | PassthroughCpuTensorHandle(const TensorInfo& tensorInfo, void* mem) |
| 134 | : CpuTensorHandle(tensorInfo) |
| 135 | { |
| 136 | SetMemory(mem); |
| 137 | } |
| 138 | |
| 139 | virtual void Allocate() override; |
| 140 | }; |
| 141 | |
| 142 | // A ConstCpuTensorHandle that wraps an already allocated memory region. |
| 143 | // |
| 144 | // This allows users to pass in const memory to a network. |
| 145 | // Clients must make sure the passed in memory region stays alive for the lifetime of |
| 146 | // the PassthroughCpuTensorHandle instance. |
| 147 | // |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 148 | // Note there is no polymorphism to/from PassthroughCpuTensorHandle. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 149 | class ConstPassthroughCpuTensorHandle : public ConstCpuTensorHandle |
| 150 | { |
| 151 | public: |
| 152 | ConstPassthroughCpuTensorHandle(const TensorInfo& tensorInfo, const void* mem) |
| 153 | : ConstCpuTensorHandle(tensorInfo) |
| 154 | { |
| 155 | SetConstMemory(mem); |
| 156 | } |
| 157 | |
| 158 | virtual void Allocate() override; |
| 159 | }; |
| 160 | |
| 161 | |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 162 | // Template specializations. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 163 | |
| 164 | template <> |
| 165 | const void* ConstCpuTensorHandle::GetConstTensor() const; |
| 166 | |
| 167 | template <> |
| 168 | void* CpuTensorHandle::GetTensor() const; |
| 169 | |
| 170 | } // namespace armnn |