TosaRefTensorHandle.hpp

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//
// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
 
#include <armnn/backends/TensorHandle.hpp>
 
#include "TosaRefMemoryManager.hpp"
 
namespace armnn
{
 
// An implementation of ITensorHandle with simple "bump the pointer" memory-management behaviour
class TosaRefTensorHandle : public ITensorHandle
{
public:
    TosaRefTensorHandle(const TensorInfo& tensorInfo, std::shared_ptr<TosaRefMemoryManager> &memoryManager);
 
    TosaRefTensorHandle(const TensorInfo& tensorInfo, MemorySourceFlags importFlags);
 
    ~TosaRefTensorHandle();
 
    virtual void Manage() override;
 
    virtual void Allocate() override;
 
    virtual ITensorHandle* GetParent() const override
    {
        return nullptr;
    }
 
    virtual const void* Map(bool /* blocking = true */) const override;
    using ITensorHandle::Map;
 
    virtual void Unmap() const override
    {}
 
    TensorShape GetStrides() const override
    {
        return GetUnpaddedTensorStrides(m_TensorInfo);
    }
 
    TensorShape GetShape() const override
    {
        return m_TensorInfo.GetShape();
    }
 
    const TensorInfo& GetTensorInfo() const
    {
        return m_TensorInfo;
    }
 
    virtual MemorySourceFlags GetImportFlags() const override
    {
        return m_ImportFlags;
    }
 
    virtual bool Import(void* memory, MemorySource source) override;
    virtual bool CanBeImported(void* memory, MemorySource source) override;
 
private:
    // Only used for testing
    void CopyOutTo(void*) const override;
    void CopyInFrom(const void*) override;
 
    void* GetPointer() const;
 
    TosaRefTensorHandle(const TosaRefTensorHandle& other) = delete; // noncopyable
    TosaRefTensorHandle& operator=(const TosaRefTensorHandle& other) = delete; //noncopyable
 
    TensorInfo m_TensorInfo;
 
    std::shared_ptr<TosaRefMemoryManager> m_MemoryManager;
    TosaRefMemoryManager::Pool* m_Pool;
    mutable void* m_UnmanagedMemory;
    MemorySourceFlags m_ImportFlags;
    bool m_Imported;
    bool m_IsImportEnabled;
};
 
}