/*************************************************************************/
/*  memory_pool_dynamic.h                                                */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
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/*************************************************************************/
#ifndef MEMORY_POOL_DYNAMIC_H
#define MEMORY_POOL_DYNAMIC_H

#include "typedefs.h"

class MemoryPoolDynamic {

	static MemoryPoolDynamic *singleton;

protected:
	friend class Memory;
	friend class MID;

	enum {

		INVALID_ID = 0xFFFFFFFF
	};

	static MemoryPoolDynamic *get_singleton();

	typedef uint64_t ID;

	virtual ID alloc(size_t p_amount, const char *p_description) = 0;
	virtual void free(ID p_id) = 0;
	virtual Error realloc(ID p_id, size_t p_amount) = 0;
	virtual bool is_valid(ID p_id) = 0;
	virtual size_t get_size(ID p_id) const = 0;
	virtual const char *get_description(ID p_id) const = 0;

	virtual Error lock(ID p_id) = 0;
	virtual void *get(ID p_ID) = 0;
	virtual Error unlock(ID p_id) = 0;
	virtual bool is_locked(ID p_id) const = 0;

	virtual size_t get_available_mem() const = 0;
	virtual size_t get_total_usage() const = 0;

	MemoryPoolDynamic();

public:
	virtual ~MemoryPoolDynamic();
};

#endif