Vmem_alloc Class Reference

#include <vmem_alloc.h>

List of all members.

Public Types
enum	Zero_fill { NO_ZERO_FILL = 0, ZERO_FILL, ZERO_MAP }
Static Public Member Functions
static void	init ()
static void *	page_alloc (void *address, Zero_fill zf=NO_ZERO_FILL, Page::Attribs pa=Page::USER_NO)
	Allocate a page of kernel memory and insert it into the master page directory.
static void	page_free (void *page)
	Free the page at the given virtual address.
static void *	page_attr (void *address, Page::Attribs pa)
	Set the page attributes of an already existing page of kernel memory.
static bool	local_alloc (Space *space, Address virt_addr, int size, unsigned int page_attributes)
	Allocate size pages of kernel memory and map it sequentially to the given address space, starting at virt_addr.
static void	local_free (Space *space, Address virt_addr, int size)
	Free the sequentially mapped memory in the given address space, starting at virt_addr.
Static Private Member Functions
static void	page_map (void *address, int order, Zero_fill zf, Address phys)
static void	page_unmap (void *address, int size)
Static Private Attributes
static P_ptr< void >	zero_page

---

Member Enumeration Documentation

enum Vmem_alloc::Zero_fill

Enumeration values: NO_ZERO_FILL  ZERO_FILL  Fill the page with zeroes. ZERO_MAP  Allocate nothing but map the global zero page.

---

Member Function Documentation

FIASCO_INIT void Vmem_alloc::init (   )  [static]

bool Vmem_alloc::local_alloc (  Space *  space, Address  virt_addr, int  size, unsigned int  page_attributes )  [static]

Allocate size pages of kernel memory and map it sequentially to the given address space, starting at virt_addr. Parameters: space  Target address space. virt_addr  Virtual start address. size  Size in pages. page_attributes  Page table attributes per allocated page. See also: local_free()

void Vmem_alloc::local_free (  Space *  space, Address  virt_addr, int  size )  [static]

Free the sequentially mapped memory in the given address space, starting at virt_addr. The page table in the address space is not deleted. Parameters: space  Target address space. virt_addr  Virtual start address. size  Size in pages. See also: local_alloc()

void * Vmem_alloc::page_alloc (  void *  address, Zero_fill  zf = NO_ZERO_FILL, Page::Attribs  pa = Page::USER_NO )  [static]

Allocate a page of kernel memory and insert it into the master page directory. Parameters: address  the virtual address where to map the page. zf  zero fill or zero map. pa  page attributes to use for the page table entry.

void * Vmem_alloc::page_attr (  void *  address, Page::Attribs  pa )  [static]

Set the page attributes of an already existing page of kernel memory. Parameters: address  the virtual address where the page is mapped. pa  page attributes to use for the page table entry.

void Vmem_alloc::page_free (  void *  page  )  [inline, static]

Free the page at the given virtual address. If kernel memory was mapped at this page, deallocate the kernel memory as well. Parameters: page  Virtual address of the page to free.

void Vmem_alloc::page_map (  void *  address, int  order, Zero_fill  zf, Address  phys )  [inline, static, private]

void Vmem_alloc::page_unmap (  void *  address, int  size )  [inline, static, private]

---

Member Data Documentation

P_ptr<void> Vmem_alloc::zero_page [static, private]

---

The documentation for this class was generated from the following files:

• vmem_alloc.h
• vmem_alloc-ia32-ux.cc

---