Struct LuaPage 

pub struct LuaPage { /* private fields */ }

Non-owning identity of a VM allocation page.

Safety model for unsafe methods

The page and its allocation must remain live. Block sizes, offsets, and traversal metadata must match the page class; page-list or allocator mutation can invalidate the handle and every pointer derived from it.

Implementations

impl LuaPage

pub const unsafe fn from_raw(raw: NonNull<RawLuaPage>) -> Self

pub fn data_ptr(&self) -> *const u8

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

pub unsafe fn block(&self, offset: i32) -> *mut u8

Returns a block address at offset bytes from the page data.

Safety

offset must be non-negative, aligned for the page’s block layout, and identify a complete block within this page’s allocation.

pub fn page_blocks(&self) -> i32

pub unsafe fn metadata_slot(block: *mut u8) -> *mut *mut u8

Safety

block must address a live allocator block whose leading storage is a pointer-sized metadata slot.

pub unsafe fn free_gco_link_slot(block: *mut u8) -> *mut *mut u8

Safety

block must address a live GC block large enough to contain the collector free-list link at GCO_LINK_OFFSET.

pub unsafe fn gco_walk(&self) -> (GcoPageWalk, i32)

pub unsafe fn next_page(&self) -> Option<LuaPage>

luaM_getnextpage

pub unsafe fn visit_page( &self, context: *mut (), visitor: unsafe fn(*mut (), LuaPage, GcObject) -> bool, )

luaM_visitpage

Trait Implementations

impl AsRef<LuaPage> for LuaPage

fn as_ref(&self) -> &LuaPage

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for LuaPage

fn clone(&self) -> LuaPage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LuaPage

impl Eq for LuaPage

impl PartialEq for LuaPage

fn eq(&self, other: &LuaPage) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl RawHandle for LuaPage

type Raw = RawLuaPage

Raw VM record addressed by this handle.

fn as_ptr(&self) -> *mut Self::Raw

Returns the record address without dereferencing it.

impl StructuralPartialEq for LuaPage