Polysemy.Conc.Semaphore

A quantity semaphore effect.

Documentation

data Semaphore :: Effect

This effect abstracts over the concept of a quantity semaphore, a concurrency primitive that contains a number of slots that can be acquired and released.

Instances

type DefiningModule Semaphore

Defined in Polysemy.Conc.Effect.Semaphore

type DefiningModule Semaphore = "Polysemy.Conc.Effect.Semaphore"

interpretSemaphoreQ :: Member (Embed IO) r => Int -> InterpreterFor Semaphore r

Interpret Semaphore as a QSem.

interpretSemaphoreT :: Member (Embed IO) r => Integer -> InterpreterFor Semaphore r

Interpret Semaphore as a TSem.

signal :: forall r. Member Semaphore r => Sem r ()

Release a slot.

wait :: forall r. Member Semaphore r => Sem r ()

Wait until a slot is available, then acquire it.