kernelite/page__allocator_8h_source.html

#ifndef ALLOCATOR_PAGE_ALLOCATOR_H

#define ALLOCATOR_PAGE_ALLOCATOR_H


#include "mem_layout/mem_layout.h"

#include "page_table/page_table.h"


#include <stdbool.h>

#include <stddef.h>

#include <stdint.h>


#define PHYS_ADDR_NULL ((phy_addr)NULL)


bool page_allocator_add_region(phy_addr mem_start, size_t mem_size,

                   bool check_kernel_overlap);


bool page_allocator_remove_region(phy_addr mem_start);


void fixup_page_allocator(void);


bool reserve_page(phy_addr start, size_t num_pages);


phy_addr page_alloc(size_t num_pages);


void page_free(phy_addr start, size_t num_pages);


void page_dump_status(void);


#ifdef RUN_TESTS


void invalidate_all_memory_chunks(void);


void get_bitmap_addr_and_size(phy_addr addr, phy_addr *bitmap_addr,

                  size_t *bitmap_size);


#endif /* RUN_TESTS */


#endif /* ALLOCATOR_PAGE_ALLOCATOR_H */

mem_layout.h
Memory layout definitions.

phy_addr
uint64_t phy_addr
Type for representing physical addresses.
Definition mem_layout.h:17

fixup_page_allocator
void fixup_page_allocator(void)
Rewrites allocator bitmap pointers after the switch to high virtual addresses.
Definition page_allocator.c:429

page_dump_status
void page_dump_status(void)
Scans the bitmap and prints the status of all memory regions.
Definition page_allocator.c:485

page_free
void page_free(phy_addr start, size_t num_pages)
Frees a previously allocated block of physical pages.
Definition page_allocator.c:474

reserve_page
bool reserve_page(phy_addr start, size_t num_pages)
Reserves a specific number of contiguous pages.
Definition page_allocator.c:451

page_allocator_add_region
bool page_allocator_add_region(phy_addr mem_start, size_t mem_size, bool check_kernel_overlap)
Registers a new physical memory region with the allocator.
Definition page_allocator.c:388

page_allocator_remove_region
bool page_allocator_remove_region(phy_addr mem_start)
Removes a previously registered memory region.
Definition page_allocator.c:412

page_alloc
phy_addr page_alloc(size_t num_pages)
Allocates a contiguous block of physical pages.
Definition page_allocator.c:462

page_table.h
Page table definitions and helpers for virtual memory mapping.