Struct Permit

pub struct Permit<'sem> { /* private fields */ }

A RAII guard representing one or more permits acquired from a Semaphore.

When the Permit is dropped, the permits it represents are released back to the Semaphore, potentially waking another task.

This type is returned by the Semaphore::acquire and Semaphore::try_acquire methods.

Implementations

impl Permit<'_>

pub fn forget(self)

Forget this permit, dropping it without returning the number of acquired permits to the semaphore.

This permanently decreases the number of permits in the semaphore by self.permits().

pub fn permits(&self) -> usize

Returns the count of semaphore permits owned by this Permit.

Trait Implementations

impl<'sem> Debug for Permit<'sem>

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

Formats the value using the given formatter.

impl Drop for Permit<'_>

fn drop(&mut self)

Executes the destructor for this type.