Struct KillOnDrop 

pub struct KillOnDrop<F: FnOnce()> { /* private fields */ }

Runs a cleanup closure exactly once when dropped, including during panic unwinding. Use it to guarantee spawned processes are killed, PTYs are closed, or temp state is removed even when an assertion fails mid-test.

FnOnce (not FnMut) is sufficient and most permissive: the guard fires exactly one time, so the closure may move its captured state.

Call defuse to consume the guard without running the cleanup (e.g. when the happy path already performed a graceful teardown).

Implementations

impl<F: FnOnce()> KillOnDrop<F>

pub fn new(cleanup: F) -> Self

Arm the guard with cleanup.

pub fn defuse(self)

Consume the guard WITHOUT running the cleanup closure.

Trait Implementations

impl<F: FnOnce()> Debug for KillOnDrop<F>

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

Formats the value using the given formatter.

impl<F: FnOnce()> Drop for KillOnDrop<F>

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.