Module semaphore

A simple asynchronous semaphore for limiting and sequencing access to arbitrary shared resources.

Structs

• Acquire
  The [Future] returned by acquire, which resolves when the required number of permits becomes available.
• AcquireError
  An error which can occur when a Semaphore has been closed.
• Permit
  A permit representing access to the Semaphore’s guarded resource.
• Semaphore
  An unsynchronized (!Sync), simple semaphore for asynchronous permit acquisition.

Enums

• TryAcquireError
  An error which can occur when a Semaphore has been closed or has no available permits.