| // |
| // Copyright © 2021 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| #include <armnn/Exceptions.hpp> |
| #include <armnn/utility/IgnoreUnused.hpp> |
| |
| #include <armnn/backends/TensorHandle.hpp> |
| |
| #include <cstring> |
| |
| namespace armnn |
| { |
| |
| TensorShape GetUnpaddedTensorStrides(const TensorInfo& tensorInfo) |
| { |
| TensorShape shape(tensorInfo.GetShape()); |
| auto size = GetDataTypeSize(tensorInfo.GetDataType()); |
| auto runningSize = size; |
| std::vector<unsigned int> strides(shape.GetNumDimensions()); |
| auto lastIdx = shape.GetNumDimensions()-1; |
| for (unsigned int i=0; i < lastIdx ; i++) |
| { |
| strides[lastIdx-i] = runningSize; |
| runningSize *= shape[lastIdx-i]; |
| } |
| strides[0] = runningSize; |
| return TensorShape(shape.GetNumDimensions(), strides.data()); |
| } |
| |
| ConstTensorHandle::ConstTensorHandle(const TensorInfo& tensorInfo) |
| : m_TensorInfo(tensorInfo) |
| , m_Memory(nullptr) |
| { |
| } |
| |
| template <> |
| const void* ConstTensorHandle::GetConstTensor<void>() const |
| { |
| return m_Memory; |
| } |
| |
| TensorHandle::TensorHandle(const TensorInfo& tensorInfo) |
| : ConstTensorHandle(tensorInfo) |
| , m_MutableMemory(nullptr) |
| { |
| } |
| |
| template <> |
| void* TensorHandle::GetTensor<void>() const |
| { |
| return m_MutableMemory; |
| } |
| |
| ScopedTensorHandle::ScopedTensorHandle(const TensorInfo& tensorInfo) |
| : TensorHandle(tensorInfo) |
| { |
| } |
| |
| ScopedTensorHandle::ScopedTensorHandle(const ConstTensor& tensor) |
| : ScopedTensorHandle(tensor.GetInfo()) |
| { |
| CopyFrom(tensor.GetMemoryArea(), tensor.GetNumBytes()); |
| } |
| |
| ScopedTensorHandle::ScopedTensorHandle(const ConstTensorHandle& tensorHandle) |
| : ScopedTensorHandle(tensorHandle.GetTensorInfo()) |
| { |
| CopyFrom(tensorHandle.GetConstTensor<void>(), tensorHandle.GetTensorInfo().GetNumBytes()); |
| } |
| |
| ScopedTensorHandle::ScopedTensorHandle(const ScopedTensorHandle& other) |
| : TensorHandle(other.GetTensorInfo()) |
| { |
| CopyFrom(other); |
| } |
| |
| ScopedTensorHandle& ScopedTensorHandle::operator=(const ScopedTensorHandle& other) |
| { |
| ::operator delete(GetTensor<void>()); |
| SetMemory(nullptr); |
| CopyFrom(other); |
| return *this; |
| } |
| |
| ScopedTensorHandle::~ScopedTensorHandle() |
| { |
| ::operator delete(GetTensor<void>()); |
| } |
| |
| void ScopedTensorHandle::Allocate() |
| { |
| if (GetTensor<void>() == nullptr) |
| { |
| SetMemory(::operator new(GetTensorInfo().GetNumBytes())); |
| } |
| else |
| { |
| throw InvalidArgumentException("TensorHandle::Allocate Trying to allocate a TensorHandle" |
| "that already has allocated memory."); |
| } |
| } |
| |
| void ScopedTensorHandle::CopyOutTo(void* memory) const |
| { |
| memcpy(memory, GetTensor<void>(), GetTensorInfo().GetNumBytes()); |
| } |
| |
| void ScopedTensorHandle::CopyInFrom(const void* memory) |
| { |
| memcpy(GetTensor<void>(), memory, GetTensorInfo().GetNumBytes()); |
| } |
| |
| void ScopedTensorHandle::CopyFrom(const ScopedTensorHandle& other) |
| { |
| CopyFrom(other.GetTensor<void>(), other.GetTensorInfo().GetNumBytes()); |
| } |
| |
| void ScopedTensorHandle::CopyFrom(const void* srcMemory, unsigned int numBytes) |
| { |
| ARMNN_ASSERT(GetTensor<void>() == nullptr); |
| ARMNN_ASSERT(GetTensorInfo().GetNumBytes() == numBytes); |
| |
| if (srcMemory) |
| { |
| Allocate(); |
| memcpy(GetTensor<void>(), srcMemory, numBytes); |
| } |
| } |
| |
| void PassthroughTensorHandle::Allocate() |
| { |
| throw InvalidArgumentException("PassthroughTensorHandle::Allocate() should never be called"); |
| } |
| |
| void ConstPassthroughTensorHandle::Allocate() |
| { |
| throw InvalidArgumentException("ConstPassthroughTensorHandle::Allocate() should never be called"); |
| } |
| |
| } // namespace armnn |