Pool.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include <vector>
#include <limits>

#include "PoolItemFactory.h"
#include "PoolHandle.h"
#include "PoolEntry.h"
#include "Types.h"
#include <stack>

namespace Eegeo
{
    namespace DataStructures
    {        
        template <class T>
        class Pool : protected Eegeo::NonCopyable
        {
            static_assert(std::is_pointer<T>::value, "Template type paramter provided to class Pool is not a pointer");

            typedef typename std::remove_pointer<T>::type TOmitPointer;

            std::vector<PoolEntry<T> > m_entries;
            std::stack<u16, std::vector<u16>> m_freeIndices;
            PoolItemFactory<T> *m_pInstanceFactory;
            int m_count;

        public:
            int GetCount() const { return m_count; }
            int GetCapacity() const { return static_cast<int>(m_entries.size()); }
            const std::vector<PoolEntry<T> >& GetEntries() { return m_entries; }
            
            Pool(int totalCapacity, PoolItemFactory<T> *pInstanceFactory);
            ~Pool();
            PoolHandle Allocate();
            void Release(PoolHandle handle);
            T Resolve(PoolHandle handle);
        };
    }
}

#include "PoolImpl.h"