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//
// Copyright © 2020 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "SampleTensorHandle.hpp"
namespace armnn
{
SampleTensorHandle::SampleTensorHandle(const TensorInfo &tensorInfo,
std::shared_ptr<SampleMemoryManager> &memoryManager)
: m_TensorInfo(tensorInfo),
m_MemoryManager(memoryManager),
m_Pool(nullptr),
m_UnmanagedMemory(nullptr),
m_ImportFlags(static_cast<MemorySourceFlags>(MemorySource::Undefined)),
m_Imported(false)
{
}
SampleTensorHandle::SampleTensorHandle(const TensorInfo& tensorInfo,
std::shared_ptr<SampleMemoryManager> &memoryManager,
MemorySourceFlags importFlags)
: m_TensorInfo(tensorInfo),
m_MemoryManager(memoryManager),
m_Pool(nullptr),
m_UnmanagedMemory(nullptr),
m_ImportFlags(importFlags),
m_Imported(false)
{
}
SampleTensorHandle::~SampleTensorHandle()
{
if (!m_Pool)
{
// unmanaged
if (!m_Imported)
{
::operator delete(m_UnmanagedMemory);
}
}
}
void SampleTensorHandle::Manage()
{
m_Pool = m_MemoryManager->Manage(m_TensorInfo.GetNumBytes());
}
void SampleTensorHandle::Allocate()
{
if (!m_UnmanagedMemory)
{
if (!m_Pool)
{
// unmanaged
m_UnmanagedMemory = ::operator new(m_TensorInfo.GetNumBytes());
}
else
{
m_MemoryManager->Allocate(m_Pool);
}
}
else
{
throw InvalidArgumentException("SampleTensorHandle::Allocate Trying to allocate a SampleTensorHandle"
"that already has allocated memory.");
}
}
const void* SampleTensorHandle::Map(bool /*unused*/) const
{
return GetPointer();
}
void* SampleTensorHandle::GetPointer() const
{
if (m_UnmanagedMemory)
{
return m_UnmanagedMemory;
}
else
{
return m_MemoryManager->GetPointer(m_Pool);
}
}
bool SampleTensorHandle::Import(void* memory, MemorySource source)
{
if (m_ImportFlags & static_cast<MemorySourceFlags>(source))
{
if (source == MemorySource::Malloc)
{
// Check memory alignment
constexpr uintptr_t alignment = sizeof(size_t);
if (reinterpret_cast<uintptr_t>(memory) % alignment)
{
if (m_Imported)
{
m_Imported = false;
m_UnmanagedMemory = nullptr;
}
return false;
}
// m_UnmanagedMemory not yet allocated.
if (!m_Imported && !m_UnmanagedMemory)
{
m_UnmanagedMemory = memory;
m_Imported = true;
return true;
}
// m_UnmanagedMemory initially allocated with Allocate().
if (!m_Imported && m_UnmanagedMemory)
{
return false;
}
// m_UnmanagedMemory previously imported.
if (m_Imported)
{
m_UnmanagedMemory = memory;
return true;
}
}
}
return false;
}
}
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