blob: 1fef582eef28fbaeaa4133834e4c5ca597fc8993 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#pragma once
// Kernel virtual memory region allocator
// This is entirely thread-safe
#include <sys.h>
#include <paging.h>
struct region_info;
typedef void (*page_fault_handler_t)(pagedir_t *pd, struct region_info *r, void* addr);
typedef struct region_info {
void* addr;
size_t size;
char* type;
page_fault_handler_t pf;
} region_info_t;
void region_allocator_init(void* kernel_data_end);
void* region_alloc(size_t size, char* type, page_fault_handler_t pf); // returns 0 on error
region_info_t *find_region(void* addr);
void region_free(void* addr);
// some usefull PF handlers
// default_allocator_pf_handler : just allocates new frames on page faults
void default_allocator_pf_handler(pagedir_t *pd, struct region_info *r, void* addr);
// some functions for freeing regions and frames
// region_free_unmap_free : deletes a region and frees all frames that were mapped in it
void region_free_unmap_free(void* addr);
// region_free_unmap : deletes a region and unmaps all frames that were mapped in it, without freeing them
void region_free_unmap(void* addr);
void dbg_print_region_info();
/* vim: set ts=4 sw=4 tw=0 noet :*/
|
