starnakin/42_KFS
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feature: both physical and virtual allocators should be done

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This commit is contained in:
0x35c
2024-09-26 16:18:06 +02:00
parent 9ade568a64
commit a66f9174f4
19 changed files with 571 additions and 62 deletions
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16
headers/alloc.h
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@ -18,7 +18,7 @@ enum { BPZ = 128, PAGES_TINY = 16, PAGES_SMALL = 64, MEM_ALIGN = 8 };
typedef enum { TINY, SMALL, LARGE } block_type_t;
/* METADATA:
* ptr: the ptr to return with kalloc (aligned)
* ptr: the ptr to return with kmalloc (aligned)
* size: the actual size
* sub_size: the size asked by the user (different
* from size only if krealloc and krealloc size < size)
@ -67,7 +67,8 @@ typedef struct Zone {
* For TINY and SMALL, the zone will be divided in blocks.
* For LARGE, it will be entire page(s).
*/
extern Zone *zones[3];
extern Zone *kzones[3];
extern Zone *vzones[3];
/*----------- UTILS ----------*/
block_type_t get_type(size_t size);
@ -76,10 +77,15 @@ size_t align_mem(size_t addr);
/*----------------------------*/
/*-------- ALLOCATOR ---------*/
int new_zone(block_type_t type, size_t size);
int new_kzone(block_type_t type, size_t size);
int new_vzone(block_type_t type, size_t size);
/*----------------------------*/
void *kalloc(size_t size);
void *kmalloc(size_t size);
void kfree(void *ptr);
void *krealloc(void *ptr, size_t size);
void show_alloc_mem(void);
void *vmalloc(size_t size);
void vfree(void *ptr);
void *vrealloc(void *ptr, size_t size);
void show_kalloc_mem(void);
void show_valloc_mem(void);

8
headers/memory.h
View File

@ -1,6 +1,6 @@
#pragma once
#include <stdint.h>
#include <stddef.h>
#define PRESENT (1 << 0)
#define RW (1 << 1)
@ -10,5 +10,7 @@
#define PAGE_SIZE 4096
void init_memory(void);
void *kalloc_frame(uint32_t nb_frames);
int kfree_frame(void *frame, uint32_t nb_frames);
void *alloc_frames(size_t size);
int free_frames(void *frame_ptr, size_t size);
void *alloc_pages(size_t size);
int free_pages(void *page_ptr, size_t size);