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/**
* @file malloc_internal.h
* @brief Internal data structures and macros for the ft_malloc allocator.
*/
#ifndef MALLOC_INTERNAL_H
#define MALLOC_INTERNAL_H
#include <stddef.h>
#define TINY_MAX 128
#define SMALL_MAX 1024
#define ALIGNMENT 16
/* Round x up to the nearest multiple of ALIGNMENT. */
#define ALIGN(x) (((x) + (ALIGNMENT - 1)) & ~(ALIGNMENT - 1))
#define MIN_ALLOC_COUNT 100
/* Header embedded before each allocation block inside a zone. */
typedef struct s_chunk
{
size_t size;
struct s_chunk *next;
int is_free;
} t_chunk;
/* Header at the start of each mmap'd region. */
typedef struct s_zone
{
struct s_zone *next;
size_t size;
} t_zone;
/* Global state: one linked list per zone category. */
typedef struct s_heap
{
t_zone *tiny;
t_zone *small;
t_zone *large;
} t_heap;
extern t_heap g_heap;
t_zone *zone_new (size_t alloc_max);
#endif
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