Struct ExecGuard 

pub struct ExecGuard { /* private fields */ }

Holds the executor’s lock for its own lifetime: taken at ExecGuard::acquire, given at drop. With no lock installed it holds nothing.

Implementations

impl ExecGuard

pub fn take(lock: Option<ExecLock>) -> Self

Take lock, if there is one.

pub unsafe fn acquire(exec: *const Executor<'_>) -> Self

Take the lock installed on the executor at exec, BEFORE any reference to that executor exists – the order that keeps a second thread’s reference from overlapping this one.

Safety

exec points at a live, initialised executor. Its lock field is read without a reference: it is written only while no second thread can reach the executor (super::Executor::set_exec_lock).

pub fn holds(&self) -> bool

Whether this guard holds a lock.

Trait Implementations

impl Drop for ExecGuard

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.