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/**
* @file mem.h
* @brief Allocators, memory tracking
* @version 0.1
* @date 2024-02-24
*
* @copyright Copyright (c) 2024
*
*/
#pragma once
#include <stddef.h>
#include "defines.h"
// --- Arena
// Inspired by https://nullprogram.com/blog/2023/09/27/
typedef struct arena {
char* begin;
char* curr;
char* end;
} arena;
typedef struct arena_save {
arena* arena;
char* savepoint;
} arena_save;
arena arena_create(void* backing_buffer, size_t capacity);
void* arena_alloc(arena* a, size_t size);
void* arena_alloc_align(arena* a, size_t size, size_t align);
void arena_free_all(arena* a);
void arena_free_storage(arena* a);
arena_save arena_savepoint(arena* a);
void arena_rewind(arena_save savepoint);
// TODO: arena_resize
// --- Pool
typedef struct void_pool_header void_pool_header;
struct void_pool_header {
void_pool_header* next;
};
typedef struct void_pool {
u64 capacity;
u64 entry_size;
u64 count;
void* backing_buffer;
void_pool_header* free_list_head;
} void_pool;
void_pool void_pool_create(arena* a, u64 capacity, u64 entry_size);
void void_pool_free_all(void_pool* pool);
bool void_pool_is_empty(void_pool* pool);
bool void_pool_is_full(void_pool* pool);
void* void_pool_get(u32 raw_handle);
// TODO: macro that lets us specialise
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