pintos/src/threads/palloc.c File Reference

#include "threads/palloc.h"
#include <bitmap.h>
#include <debug.h>
#include <inttypes.h>
#include <round.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "threads/loader.h"
#include "threads/synch.h"
#include "threads/vaddr.h"

Go to the source code of this file.

Data Structures
struct	pool
Functions
static void	init_pool (struct pool *, void *base, size_t page_cnt, const char *name)
static bool	page_from_pool (const struct pool *, void *page)
void	palloc_init (void)
void *	palloc_get_multiple (enum palloc_flags flags, size_t page_cnt)
void *	palloc_get_page (enum palloc_flags flags)
void	palloc_free_multiple (void *pages, size_t page_cnt)
void	palloc_free_page (void *page)
Variables
struct pool kernel_pool	user_pool
size_t	user_page_limit = SIZE_MAX

---

Function Documentation

static void init_pool	(	struct pool *	p,
		void *	base,
		size_t	page_cnt,
		const char *	name
	)			[static]

Definition at line 157 of file palloc.c.

References pool::base, bitmap_buf_size(), bitmap_create_in_buf(), DIV_ROUND_UP, pool::lock, lock_init(), PANIC, PGSIZE, printf(), and pool::used_map.

Referenced by palloc_init().

static bool page_from_pool	(	const struct pool *	pool,
		void *	page
	)			[static]

Definition at line 178 of file palloc.c.

References pool::base, bitmap_size(), pg_no(), and pool::used_map.

Referenced by palloc_free_multiple().

void palloc_free_multiple	(	void *	pages,
		size_t	page_cnt
	)

Definition at line 121 of file palloc.c.

References ASSERT, pool::base, bitmap_all(), bitmap_set_multiple(), memset(), NOT_REACHED, NULL, page_from_pool(), pg_no(), pg_ofs(), PGSIZE, pool::used_map, and user_pool.

Referenced by free(), and palloc_free_page().

void palloc_free_page

(

void *

page

)

Definition at line 149 of file palloc.c.

References palloc_free_multiple().

Referenced by free(), fsutil_cat(), load_segment(), pagedir_destroy(), process_execute(), schedule_tail(), setup_stack(), start_process(), and uhci_destroy_info().

void* palloc_get_multiple	(	enum palloc_flags	flags,
		size_t	page_cnt
	)

Definition at line 74 of file palloc.c.

References pool::base, BITMAP_ERROR, bitmap_scan_and_flip(), pool::lock, lock_acquire(), lock_release(), memset(), NULL, PAL_ASSERT, PAL_USER, PAL_ZERO, PANIC, PGSIZE, pool::used_map, and user_pool.

Referenced by malloc(), msc_attached(), and palloc_get_page().

void* palloc_get_page

(

enum palloc_flags

flags

)

Definition at line 114 of file palloc.c.

References palloc_get_multiple().

Referenced by fsutil_cat(), load_segment(), lookup_page(), malloc(), pagedir_create(), paging_init(), pci_zone_init(), process_execute(), setup_stack(), thread_create(), tss_init(), and uhci_create_info().

void palloc_init

(

void

)

Definition at line 49 of file palloc.c.

References init_pool(), PGSIZE, ptov(), ram_pages, user_page_limit, and user_pool.

Referenced by main().

---

Variable Documentation

size_t user_page_limit = SIZE_MAX

Definition at line 41 of file palloc.c.

Referenced by palloc_init(), and parse_options().

struct pool kernel_pool user_pool

Definition at line 38 of file palloc.c.

Referenced by palloc_free_multiple(), palloc_get_multiple(), and palloc_init().