pool.hpp

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#ifndef POOL_HPP
#define POOL_HPP
 
#include <cstddef>
#include <stack>
#include <stdexcept>
#include <vector>
 
template <typename TType>
class Pool
{
public:
    class Object
    {
        friend class Pool<TType>;
 
    private:
        Pool<TType>*                                          _pool_ptr;
        int                                                   _idx;
        std::aligned_storage_t<sizeof(TType), alignof(TType)> _myself;
 
        template <typename... TArgs>
        Object(Pool<TType>* pool, int index, TArgs&&... p_args);
 
    public:
        Object();
        virtual ~Object();
 
        TType* operator->();
        TType* get();
    };
 
    Pool(size_t size = 0);
    ~Pool();
 
    void resize(size_t numberOfObjectStored);
 
    template <typename... TArgs>
    Object& acquire(TArgs&&... p_args);
 
    void release(Object& obj);
 
private:
    std::stack<int>     _available;
    std::vector<Object> _objects;
};
 
#include "pool.tpp"
 
#endif