malloc/inc/ft_malloc_internal.h

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_malloc_internal.h                               :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gtertysh <gtertysh@student.unit.ua>        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/05/06 22:37:07 by foton             #+#    #+#             */
/*   Updated: 2019/05/08 19:45:18 by gtertysh         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#ifndef FT_MALLOC_INTERNAL_H
# define FT_MALLOC_INTERNAL_H

# include <stddef.h>
# include <stdint.h>
# include <pthread.h>


# define TINY 512
# define SMALL 4096
# define LARGE 4097
# define START -1
# define MAGIC 0xDEADBEEF
# define NALLOC 100

typedef struct			s_chunk
{
	uint8_t				is_free;
	size_t				size;
	struct s_chunk		*next;
	struct s_chunk		*prev;
	uint32_t			magic;
}						t_chunk;

# define CHUNK_SIZE(size) ((size) + sizeof(t_chunk))

typedef struct			s_arena
{
	int					type;
	size_t				size;
	struct s_arena		*next;
	t_chunk				*heap;
}						t_arena;

# define HEAP_SIZE(size) ((size) - sizeof(t_arena))
# define ARENA_SIZE(size) ((size) + sizeof(t_arena))

extern t_arena			g_base;

extern pthread_mutex_t	g_malloc_mutex;

int						get_arena_type(size_t size);
void					*malloc_core(size_t size);
void					free_core(void *used);

#endif