Struct HostRootTicket 

pub struct HostRootTicket { /* private fields */ }

v1.3 Phase SR — opaque handle to a pinned host root.

Copy so embedder handle types (LuaFunction / LuaTable / LuaRoot) stay Copy. Two u32 fields → 8 bytes total, fits in a register; matches usize payload size on 64-bit and is smaller on 32-bit.

Embedders store / copy / compare tickets but cannot mint a fake one — fields are crate-private, the only constructor is Vm::pin_host.

Generation overflow at u32::MAX retires the slot permanently (the index is NOT pushed to the free list; future pin_host allocations bypass it). At 10⁹ unpins/day per slot that’s ~4 days; lifetime leak is bounded.

Implementations

impl HostRootTicket

pub fn idx(self) -> u32

Slot index this ticket targets. Diagnostic / facade-author use only — embedders should not rely on numerical identity.

pub fn generation(self) -> u32

Generation this ticket was issued at. Diagnostic only — equality against the live slot’s current generation determines validity.

Trait Implementations

impl Clone for HostRootTicket

fn clone(&self) -> HostRootTicket

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HostRootTicket

impl Debug for HostRootTicket

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for HostRootTicket

impl Hash for HostRootTicket

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HostRootTicket

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for HostRootTicket