pub struct NativeCtx<'a> {
pub arena: &'a Arena,
}Expand description
Context passed to native functions that opt into arena access.
Created freshly at each Op::CallNative dispatch with a borrow
of the host-owned arena. Native functions allocate dynamic strings
through KString::alloc(ctx.arena, s) and return them as
Value::KStr for the bounded-memory path. Natives that do not
need arena access can be registered through Vm::register_native
or Vm::register_fn, whose function types omit the context.
Fields§
§arena: &'a ArenaBorrow of the host-owned arena for string and scratch allocations.
Auto Trait Implementations§
impl<'a> Freeze for NativeCtx<'a>
impl<'a> !RefUnwindSafe for NativeCtx<'a>
impl<'a> !Send for NativeCtx<'a>
impl<'a> !Sync for NativeCtx<'a>
impl<'a> Unpin for NativeCtx<'a>
impl<'a> UnsafeUnpin for NativeCtx<'a>
impl<'a> !UnwindSafe for NativeCtx<'a>
Blanket Implementations§
Source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
Source§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
Source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
Source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
Source§impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
Source§unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
Returns whether the given value has been niched. Read more
Source§fn resolve_niched(out: Place<NichedOption<T, N1>>)
fn resolve_niched(out: Place<NichedOption<T, N1>>)
Writes data to
out indicating that a T is niched.