Module semaphore 

Contains the Semaphore struct for async, priority-ordered acquisition of permits.

Structs

InsufficientPermitsError

Error returned when we lack sufficient permits to perform an operation.

Semaphore

An async semaphore where queued waiters are granted permits by order of priority.

SemaphorePermit

A permit (or collection of permits) from a Semaphore

SemaphoreWaiter

Opaque waiter type used for PriorityQueue entries.

Constants

MAX_PERMITS

The maximum amount of permits a single holder can have. This is usize::MAX >> 1.

Traits

SemaphoreQueue

Type Aliases

DefaultSemaphoreQueue

The default queue used for Semaphore.