Struct CardTable

pub struct CardTable { /* private fields */ }

Maintain a card table from the the write barrier. All writes of non-null values to heap addresses should go through an entry in WriteBarrier, and from there to here.

Implementations

impl CardTable

pub const CARD_SHIFT: usize = 10usize

pub const CARD_SIZE: usize = 1_024usize

pub const CARD_CLEAN: u8 = 0u8

pub const CARD_DIRTY: u8 = 112u8

pub const CARD_AGED: u8 = 111u8

pub fn get_biased_begin(&self) -> *mut u8

Returns a value that when added to a heap address >> CARD_SHIFT will address the appropriate card table byte. For convenience this value is cached in every local heap.

pub fn mem_map_begin(&self) -> *mut u8

pub fn mem_map_size(&self) -> usize

pub fn card_from_addr(&self, addr: *const u8) -> *mut u8

pub fn addr_from_card(&self, card_addr: *mut u8) -> *mut u8

pub fn modify_cards_atomic( &self, scan_begin: *mut u8, scan_end: *mut u8, visitor: impl FnMut(u8) -> u8, modified: impl FnMut(*mut u8, u8, u8), )