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//
// Copyright © 2020 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "SampleMemoryManager.hpp"
#include <algorithm>
namespace sdb // sample dynamic backend
{
SampleMemoryManager::SampleMemoryManager()
{}
SampleMemoryManager::~SampleMemoryManager()
{}
SampleMemoryManager::Pool* SampleMemoryManager::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 SampleMemoryManager::Allocate(SampleMemoryManager::Pool* pool)
{
m_FreePools.push_back(pool);
}
void* SampleMemoryManager::GetPointer(SampleMemoryManager::Pool* pool)
{
return pool->GetPointer();
}
void SampleMemoryManager::Acquire()
{
for (Pool &pool: m_Pools)
{
pool.Acquire();
}
}
void SampleMemoryManager::Release()
{
for (Pool &pool: m_Pools)
{
pool.Release();
}
}
SampleMemoryManager::Pool::Pool(unsigned int numBytes)
: m_Size(numBytes),
m_Pointer(nullptr)
{}
SampleMemoryManager::Pool::~Pool()
{
if (m_Pointer)
{
Release();
}
}
void* SampleMemoryManager::Pool::GetPointer()
{
return m_Pointer;
}
void SampleMemoryManager::Pool::Reserve(unsigned int numBytes)
{
m_Size = std::max(m_Size, numBytes);
}
void SampleMemoryManager::Pool::Acquire()
{
m_Pointer = ::operator new(size_t(m_Size));
}
void SampleMemoryManager::Pool::Release()
{
::operator delete(m_Pointer);
m_Pointer = nullptr;
}
} // namespace sdb
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