Struct UserStackMap

pub struct UserStackMap { /* private fields */ }

A compiled stack map, describing the location of many GC-managed values.

A stack map is associated with a particular instruction, and that instruction is a safepoint.

Implementations

impl UserStackMap

pub fn entries(&self) -> impl Iterator<Item = (Type, u32)> + '_

Iterate over the entries in this stack map.

Yields pairs of the type of GC reference that is at the offset, and the offset from SP. If a pair (i64, 0x42) is yielded, for example, then when execution is at this stack map’s associated PC, SP + 0x42 is a pointer to an i64, and that i64 is a live GC reference.

Trait Implementations

impl Clone for UserStackMap

fn clone(&self) -> UserStackMap

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UserStackMap

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

Formats the value using the given formatter.

impl PartialEq for UserStackMap

fn eq(&self, other: &UserStackMap) -> 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 UserStackMap