#ifndef RR_GENERIC_ALLOCATOR_H
#define RR_GENERIC_ALLOCATOR_H

#include <librr/types.h>

typedef struct rr_generic_allocator rr_generic_allocator_s;
typedef struct rr_generic_pool      rr_generic_pool_s;
typedef struct rr_generic_arena     rr_generic_arena_s;

typedef rr_generic_arena_s (*rr_create_arena_fn) (usz_t capacity);
typedef rr_generic_pool_s  (*rr_create_pool_fn)  (usz_t item_size, usz_t num_items);

struct rr_generic_allocator
{
    void *            (*fn_alloc)               (rr_generic_allocator_s *allocator, usz_t num_bytes);
    void              (*fn_free)                (rr_generic_allocator_s *allocator, void *block);
    void              (*fn_destruct)            (rr_generic_allocator_s *allocator);
    void               *specifics;
};

struct rr_generic_pool
{
    void *            (*fn_alloc)               (rr_generic_pool_s *pool);
    void              (*fn_free)                (rr_generic_pool_s *pool, void *block);
    void              (*fn_destruct)            (rr_generic_pool_s *pool);
    usz_t             (*fn_get_unit_size)       (rr_generic_pool_s *pool);
    void               *specifics;
};

struct rr_generic_arena
{
    void *            (*fn_alloc)               (rr_generic_arena_s *arena, usz_t num_bytes);
    void              (*fn_destruct)            (rr_generic_arena_s *arena);
    void               *specifics;
};

#endif // RR_GENERIC_ALLOCATOR_H