Safe Haskell	Safe-Inferred
Language	Haskell2010

Polysemy.Conc.Semaphore

Description

A quantity semaphore effect.

Synopsis

data Semaphore :: Effect
interpretSemaphoreQ :: Member (Embed IO) r => Int -> InterpreterFor Semaphore r
interpretSemaphoreT :: Member (Embed IO) r => Integer -> InterpreterFor Semaphore r
signal :: forall r. Member Semaphore r => Sem r ()
wait :: forall r. Member Semaphore r => Sem r ()

Documentation

data Semaphore :: Effect Source #

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.

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

Interpret Semaphore as a QSem.

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

Interpret Semaphore as a TSem.

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

Release a slot.

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

Wait until a slot is available, then acquire it.