Struct StackGuard 

pub struct StackGuard<'thread> { /* private fields */ }

Restores a thread’s stack height when the guard is dropped.

Values intentionally left on the stack can be accounted for with keep, or restoration can be disabled with into_top or dismiss.

Implementations

impl<'thread> StackGuard<'thread>

pub unsafe fn new(thread: &'thread Thread) -> Self

Captures the thread’s current stack height.

Safety

thread must remain a live VM thread for the guard’s lifetime. While the guard is active, callers must not shrink the stack below the captured height or otherwise invalidate that saved stack position.

pub const fn top(&self) -> i32

pub fn keep(&mut self, count: i32)

pub fn into_top(self) -> i32

pub fn dismiss(self)

Trait Implementations

impl Drop for StackGuard<'_>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.