Function blocking_permit::blocking_permit_future [−][src]
pub fn blocking_permit_future(semaphore: &Semaphore) -> BlockingPermitFuture<'_>ⓘNotable traits for BlockingPermitFuture<'a>impl<'a> Future for BlockingPermitFuture<'a> type Output = Result<BlockingPermit<'a>, Canceled>;
Expand description
Request a permit to perform a blocking operation on the current thread.
The returned future attempts to obtain a permit from the provided
Semaphore
and outputs a BlockingPermit
which can then be
run
to allow blocking or “long running”
operation, while the BlockingPermit
remains in scope. If no permits are
immediately available, then the current task context will be notified when
one becomes available.