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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "RefMemoryManager.hpp"
#include <boost/assert.hpp>
namespace armnn
{
RefMemoryManager::RefMemoryManager()
{}
RefMemoryManager::~RefMemoryManager()
{}
RefMemoryManager::Pool* RefMemoryManager::Manage(unsigned int numBytes)
{
if (!m_FreePools.empty())
{
Pool* res = m_FreePools.back();
m_FreePools.pop_back();
res->Reserve(numBytes);
return res;
}
else
{
m_Pools.push_front(Pool(numBytes));
return &m_Pools.front();
}
}
void RefMemoryManager::Allocate(RefMemoryManager::Pool* pool)
{
BOOST_ASSERT(pool);
m_FreePools.push_back(pool);
}
void* RefMemoryManager::GetPointer(RefMemoryManager::Pool* pool)
{
return pool->GetPointer();
}
void RefMemoryManager::Acquire()
{
for (Pool &pool: m_Pools)
{
pool.Acquire();
}
}
void RefMemoryManager::Release()
{
for (Pool &pool: m_Pools)
{
pool.Release();
}
}
RefMemoryManager::Pool::Pool(unsigned int numBytes)
: m_Size(numBytes),
m_Pointer(nullptr)
{}
RefMemoryManager::Pool::~Pool()
{
if (m_Pointer)
{
Release();
}
}
void* RefMemoryManager::Pool::GetPointer()
{
BOOST_ASSERT_MSG(m_Pointer, "RefMemoryManager::Pool::GetPointer() called when memory not acquired");
return m_Pointer;
}
void RefMemoryManager::Pool::Reserve(unsigned int numBytes)
{
BOOST_ASSERT_MSG(!m_Pointer, "RefMemoryManager::Pool::Reserve() cannot be called after memory acquired");
m_Size = std::max(m_Size, numBytes);
}
void RefMemoryManager::Pool::Acquire()
{
BOOST_ASSERT_MSG(!m_Pointer, "RefMemoryManager::Pool::Acquire() called when memory already acquired");
BOOST_ASSERT(m_Size >= 0);
m_Pointer = ::operator new(size_t(m_Size));
}
void RefMemoryManager::Pool::Release()
{
BOOST_ASSERT_MSG(m_Pointer, "RefMemoryManager::Pool::Release() called when memory not acquired");
::operator delete(m_Pointer);
m_Pointer = nullptr;
}
}
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